From 67073897327f6f0c6a2c6aca63d8f6f4c6545ac9 Mon Sep 17 00:00:00 2001
From: Sean McNamara <smcnam@gmail.com>
Date: Wed, 25 Dec 2019 06:19:12 -0500
Subject: [PATCH 01/13] Forward port plietar's WIP gstreamer backend.

---
 Cargo.lock                              | 311 ++++++++++++++++++++++++
 Cargo.toml                              |   1 +
 playback/Cargo.toml                     |   5 +
 playback/src/audio_backend/gstreamer.rs | 129 ++++++++++
 playback/src/audio_backend/mod.rs       |   7 +
 playback/src/lib.rs                     |   9 +
 6 files changed, 462 insertions(+)
 create mode 100644 playback/src/audio_backend/gstreamer.rs

diff --git a/Cargo.lock b/Cargo.lock
index 594b80c..304089c 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -532,6 +532,19 @@ name = "futures"
 version = "0.1.28"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "futures-channel"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "futures-core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "futures-core"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "futures-cpupool"
 version = "0.1.8"
@@ -541,6 +554,46 @@ dependencies = [
  "num_cpus 1.10.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "futures-executor"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "futures-core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-task 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-util 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "futures-macro"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "proc-macro-hack 0.5.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.11 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "futures-task"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "futures-util"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "futures-core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-macro 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-task 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pin-utils 0.1.0-alpha.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro-hack 0.5.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro-nested 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "slab 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "gcc"
 version = "0.3.55"
@@ -571,11 +624,132 @@ dependencies = [
  "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "glib"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "bitflags 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-channel 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-executor 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-task 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-util 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "glib-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gobject-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "glib-sys"
+version = "0.9.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pkg-config 0.3.15 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "glob"
 version = "0.2.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "gobject-sys"
+version = "0.9.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "glib-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pkg-config 0.3.15 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "gstreamer"
+version = "0.15.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "bitflags 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cfg-if 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "glib 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "glib-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gobject-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gstreamer-sys 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "muldiv 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-rational 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "paste 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "gstreamer-app"
+version = "0.15.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "bitflags 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "glib 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "glib-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gobject-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gstreamer 0.15.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gstreamer-app-sys 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gstreamer-base 0.15.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gstreamer-sys 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "gstreamer-app-sys"
+version = "0.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "glib-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gstreamer-base-sys 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gstreamer-sys 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pkg-config 0.3.15 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "gstreamer-base"
+version = "0.15.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "bitflags 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "glib 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "glib-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gobject-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gstreamer 0.15.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gstreamer-base-sys 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gstreamer-sys 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "gstreamer-base-sys"
+version = "0.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "glib-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gobject-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gstreamer-sys 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pkg-config 0.3.15 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "gstreamer-sys"
+version = "0.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "glib-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gobject-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pkg-config 0.3.15 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "hex"
 version = "0.3.2"
@@ -898,6 +1072,9 @@ dependencies = [
  "byteorder 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "cpal 0.8.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)",
+ "glib 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gstreamer 0.15.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gstreamer-app 0.15.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "jack 0.5.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
  "libpulse-sys 0.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -908,6 +1085,7 @@ dependencies = [
  "portaudio-rs 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rodio 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "sdl2 0.32.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "zerocopy 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1060,6 +1238,11 @@ dependencies = [
  "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "muldiv"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "multimap"
 version = "0.4.0"
@@ -1177,6 +1360,16 @@ dependencies = [
  "num-traits 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "num-rational"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "autocfg 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-integer 0.1.41 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "num-traits"
 version = "0.2.8"
@@ -1245,6 +1438,26 @@ dependencies = [
  "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "paste"
+version = "0.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "paste-impl 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro-hack 0.5.11 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "paste-impl"
+version = "0.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "proc-macro-hack 0.5.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.11 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "pbkdf2"
 version = "0.3.0"
@@ -1269,6 +1482,11 @@ name = "percent-encoding"
 version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "pin-utils"
+version = "0.1.0-alpha.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "pkg-config"
 version = "0.3.15"
@@ -1298,6 +1516,21 @@ name = "ppv-lite86"
 version = "0.2.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "proc-macro-hack"
+version = "0.5.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "proc-macro2 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.11 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "proc-macro-nested"
+version = "0.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "proc-macro2"
 version = "0.2.3"
@@ -1314,6 +1547,14 @@ dependencies = [
  "unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "proc-macro2"
+version = "1.0.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "protobuf"
 version = "2.8.1"
@@ -1357,6 +1598,14 @@ dependencies = [
  "proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "quote"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "proc-macro2 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "rand"
 version = "0.3.23"
@@ -1829,6 +2078,16 @@ dependencies = [
  "unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "syn"
+version = "1.0.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "proc-macro2 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "synstructure"
 version = "0.10.2"
@@ -2187,6 +2446,11 @@ name = "unicode-xid"
 version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "unicode-xid"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "url"
 version = "1.7.2"
@@ -2356,6 +2620,25 @@ dependencies = [
  "winapi-build 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "zerocopy"
+version = "0.2.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "byteorder 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "zerocopy-derive 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "zerocopy-derive"
+version = "0.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 0.15.42 (registry+https://github.com/rust-lang/crates.io-index)",
+ "synstructure 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
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 "checksum aes 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)" = "54eb1d8fe354e5fc611daf4f2ea97dd45a765f4f1e4512306ec183ae2e8f20c9"
 "checksum aes-ctr 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "d2e5b0458ea3beae0d1d8c0f3946564f8e10f90646cf78c06b4351052058d1ee"
@@ -2420,12 +2703,27 @@ dependencies = [
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+"checksum futures-core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "79564c427afefab1dfb3298535b21eda083ef7935b4f0ecbfcb121f0aec10866"
 "checksum futures-cpupool 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)" = "ab90cde24b3319636588d0c35fe03b1333857621051837ed769faefb4c2162e4"
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+"checksum futures-macro 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "52e7c56c15537adb4f76d0b7a76ad131cb4d2f4f32d3b0bcabcbe1c7c5e87764"
+"checksum futures-task 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "0bae52d6b29cf440e298856fec3965ee6fa71b06aa7495178615953fd669e5f9"
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 "checksum glob 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)" = "8be18de09a56b60ed0edf84bc9df007e30040691af7acd1c41874faac5895bfb"
+"checksum gobject-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)" = "31d1a804f62034eccf370006ccaef3708a71c31d561fee88564abe71177553d9"
+"checksum gstreamer 0.15.0 (registry+https://github.com/rust-lang/crates.io-index)" = "08d9ea04f6e746e90d979eaf5b55a9125fd159e58959f203a2f3fbc4b2a93b77"
+"checksum gstreamer-app 0.15.0 (registry+https://github.com/rust-lang/crates.io-index)" = "fe16616846b453c5d976cee9e3617ec4b098bd160d95883a455c43b4e31a3b56"
+"checksum gstreamer-app-sys 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)" = "bf869ce152c23bca5d761ab62146b47f750d0b28d4d499731857532897d48167"
+"checksum gstreamer-base 0.15.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1eaec2ff20b049560762f83545d95b33fd1533512792f37a9a3f6800e45da42b"
+"checksum gstreamer-base-sys 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)" = "ba384f52174b3c586593fca32642680a9e67961fea9f4cd8419f678965023bed"
+"checksum gstreamer-sys 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)" = "1d18da01b97d0ab5896acd5151e4c155acefd0e6c03c3dd24dd133ba054053db"
 "checksum hex 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)" = "805026a5d0141ffc30abb3be3173848ad46a1b1664fe632428479619a3644d77"
 "checksum hmac 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)" = "5dcb5e64cda4c23119ab41ba960d1e170a774c8e4b9d9e6a9bc18aabf5e59695"
 "checksum httparse 1.3.4 (registry+https://github.com/rust-lang/crates.io-index)" = "cd179ae861f0c2e53da70d892f5f3029f9594be0c41dc5269cd371691b1dc2f9"
@@ -2462,6 +2760,7 @@ dependencies = [
 "checksum mio-uds 0.6.7 (registry+https://github.com/rust-lang/crates.io-index)" = "966257a94e196b11bb43aca423754d87429960a768de9414f3691d6957abf125"
 "checksum miow 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "8c1f2f3b1cf331de6896aabf6e9d55dca90356cc9960cca7eaaf408a355ae919"
 "checksum miow 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "396aa0f2003d7df8395cb93e09871561ccc3e785f0acb369170e8cc74ddf9226"
+"checksum muldiv 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "451a9a05d2a32c566c897835e0ea95cf79ed2fdfe957924045a1721a36c9980f"
 "checksum multimap 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "2eb04b9f127583ed176e163fb9ec6f3e793b87e21deedd5734a69386a18a0151"
 "checksum nalgebra 0.18.0 (registry+https://github.com/rust-lang/crates.io-index)" = "8e12856109b5cb8e2934b5e45e4624839416e1c6c1f7d286711a7a66b79db29d"
 "checksum net2 0.2.33 (registry+https://github.com/rust-lang/crates.io-index)" = "42550d9fb7b6684a6d404d9fa7250c2eb2646df731d1c06afc06dcee9e1bcf88"
@@ -2474,6 +2773,7 @@ dependencies = [
 "checksum num-complex 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "fcb0cf31fb3ff77e6d2a6ebd6800df7fdcd106f2ad89113c9130bcd07f93dffc"
 "checksum num-integer 0.1.41 (registry+https://github.com/rust-lang/crates.io-index)" = "b85e541ef8255f6cf42bbfe4ef361305c6c135d10919ecc26126c4e5ae94bc09"
 "checksum num-iter 0.1.39 (registry+https://github.com/rust-lang/crates.io-index)" = "76bd5272412d173d6bf9afdf98db8612bbabc9a7a830b7bfc9c188911716132e"
+"checksum num-rational 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "f2885278d5fe2adc2f75ced642d52d879bffaceb5a2e0b1d4309ffdfb239b454"
 "checksum num-traits 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)" = "6ba9a427cfca2be13aa6f6403b0b7e7368fe982bfa16fccc450ce74c46cd9b32"
 "checksum num_cpus 1.10.1 (registry+https://github.com/rust-lang/crates.io-index)" = "bcef43580c035376c0705c42792c294b66974abbfd2789b511784023f71f3273"
 "checksum ogg 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "d79f1db9148be9d0e174bb3ac890f6030fcb1ed947267c5a91ee4c91b5a91e15"
@@ -2482,21 +2782,28 @@ dependencies = [
 "checksum owning_ref 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "49a4b8ea2179e6a2e27411d3bca09ca6dd630821cf6894c6c7c8467a8ee7ef13"
 "checksum parking_lot 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)" = "ab41b4aed082705d1056416ae4468b6ea99d52599ecf3169b00088d43113e337"
 "checksum parking_lot_core 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "94c8c7923936b28d546dfd14d4472eaf34c99b14e1c973a32b3e6d4eb04298c9"
+"checksum paste 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)" = "423a519e1c6e828f1e73b720f9d9ed2fa643dce8a7737fb43235ce0b41eeaa49"
+"checksum paste-impl 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)" = "4214c9e912ef61bf42b81ba9a47e8aad1b2ffaf739ab162bf96d1e011f54e6c5"
 "checksum pbkdf2 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "006c038a43a45995a9670da19e67600114740e8511d4333bf97a56e66a7542d9"
 "checksum peeking_take_while 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "19b17cddbe7ec3f8bc800887bab5e717348c95ea2ca0b1bf0837fb964dc67099"
 "checksum percent-encoding 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "31010dd2e1ac33d5b46a5b413495239882813e0369f8ed8a5e266f173602f831"
+"checksum pin-utils 0.1.0-alpha.4 (registry+https://github.com/rust-lang/crates.io-index)" = "5894c618ce612a3fa23881b152b608bafb8c56cfc22f434a3ba3120b40f7b587"
 "checksum pkg-config 0.3.15 (registry+https://github.com/rust-lang/crates.io-index)" = "a7c1d2cfa5a714db3b5f24f0915e74fcdf91d09d496ba61329705dda7774d2af"
 "checksum portaudio-rs 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "fc0e6b38f00fae9dde9a9832a2b54405988c6dcaf2870e6f9551546b447bbd7f"
 "checksum portaudio-sys 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "5194a4fa953b4ffd851c320ef6f0484cd7278cb7169ea9d6c433e49b23f7b7f5"
 "checksum ppv-lite86 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)" = "e3cbf9f658cdb5000fcf6f362b8ea2ba154b9f146a61c7a20d647034c6b6561b"
+"checksum proc-macro-hack 0.5.11 (registry+https://github.com/rust-lang/crates.io-index)" = "ecd45702f76d6d3c75a80564378ae228a85f0b59d2f3ed43c91b4a69eb2ebfc5"
+"checksum proc-macro-nested 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "369a6ed065f249a159e06c45752c780bda2fb53c995718f9e484d08daa9eb42e"
 "checksum proc-macro2 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "cd07deb3c6d1d9ff827999c7f9b04cdfd66b1b17ae508e14fe47b620f2282ae0"
 "checksum proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)" = "cf3d2011ab5c909338f7887f4fc896d35932e29146c12c8d01da6b22a80ba759"
+"checksum proc-macro2 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)" = "9c9e470a8dc4aeae2dee2f335e8f533e2d4b347e1434e5671afc49b054592f27"
 "checksum protobuf 2.8.1 (registry+https://github.com/rust-lang/crates.io-index)" = "40361836defdd5871ff7e84096c6f6444af7fc157f8ef1789f54f147687caa20"
 "checksum protobuf-codegen 2.8.1 (registry+https://github.com/rust-lang/crates.io-index)" = "12c6abd78435445fc86898ebbd0521a68438063d4a73e23527b7134e6bf58b4a"
 "checksum protobuf-codegen-pure 2.8.1 (registry+https://github.com/rust-lang/crates.io-index)" = "c1646acda5319f5b28b0bff4a484324df43ddae2c0f5a3f3e63c0b26095cd600"
 "checksum quick-error 1.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "9274b940887ce9addde99c4eee6b5c44cc494b182b97e73dc8ffdcb3397fd3f0"
 "checksum quote 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "1eca14c727ad12702eb4b6bfb5a232287dcf8385cb8ca83a3eeaf6519c44c408"
 "checksum quote 0.6.13 (registry+https://github.com/rust-lang/crates.io-index)" = "6ce23b6b870e8f94f81fb0a363d65d86675884b34a09043c81e5562f11c1f8e1"
+"checksum quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "053a8c8bcc71fcce321828dc897a98ab9760bef03a4fc36693c231e5b3216cfe"
 "checksum rand 0.3.23 (registry+https://github.com/rust-lang/crates.io-index)" = "64ac302d8f83c0c1974bf758f6b041c6c8ada916fbb44a609158ca8b064cc76c"
 "checksum rand 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)" = "552840b97013b1a26992c11eac34bdd778e464601a4c2054b5f0bff7c6761293"
 "checksum rand 0.5.6 (registry+https://github.com/rust-lang/crates.io-index)" = "c618c47cd3ebd209790115ab837de41425723956ad3ce2e6a7f09890947cacb9"
@@ -2555,6 +2862,7 @@ dependencies = [
 "checksum strsim 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "8ea5119cdb4c55b55d432abb513a0429384878c15dde60cc77b1c99de1a95a6a"
 "checksum subtle 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "2d67a5a62ba6e01cb2192ff309324cb4875d0c451d55fe2319433abe7a05a8ee"
 "checksum syn 0.15.42 (registry+https://github.com/rust-lang/crates.io-index)" = "eadc09306ca51a40555dd6fc2b415538e9e18bc9f870e47b1a524a79fe2dcf5e"
+"checksum syn 1.0.11 (registry+https://github.com/rust-lang/crates.io-index)" = "dff0acdb207ae2fe6d5976617f887eb1e35a2ba52c13c7234c790960cdad9238"
 "checksum synstructure 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)" = "02353edf96d6e4dc81aea2d8490a7e9db177bf8acb0e951c24940bf866cb313f"
 "checksum take 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b157868d8ac1f56b64604539990685fa7611d8fa9e5476cf0c02cf34d32917c5"
 "checksum tempfile 3.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "7a6e24d9338a0a5be79593e2fa15a648add6138caa803e2d5bc782c371732ca9"
@@ -2588,6 +2896,7 @@ dependencies = [
 "checksum unicode-normalization 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)" = "141339a08b982d942be2ca06ff8b076563cbe223d1befd5450716790d44e2426"
 "checksum unicode-width 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "882386231c45df4700b275c7ff55b6f3698780a650026380e72dabe76fa46526"
 "checksum unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "fc72304796d0818e357ead4e000d19c9c174ab23dc11093ac919054d20a6a7fc"
+"checksum unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "826e7639553986605ec5979c7dd957c7895e93eabed50ab2ffa7f6128a75097c"
 "checksum url 1.7.2 (registry+https://github.com/rust-lang/crates.io-index)" = "dd4e7c0d531266369519a4aa4f399d748bd37043b00bde1e4ff1f60a120b355a"
 "checksum utf8-ranges 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)" = "9d50aa7650df78abf942826607c62468ce18d9019673d4a2ebe1865dbb96ffde"
 "checksum uuid 0.7.4 (registry+https://github.com/rust-lang/crates.io-index)" = "90dbc611eb48397705a6b0f6e917da23ae517e4d127123d2cf7674206627d32a"
@@ -2609,3 +2918,5 @@ dependencies = [
 "checksum winapi-x86_64-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
 "checksum wincolor 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "561ed901ae465d6185fa7864d63fbd5720d0ef718366c9a4dc83cf6170d7e9ba"
 "checksum ws2_32-sys 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "d59cefebd0c892fa2dd6de581e937301d8552cb44489cdff035c6187cb63fa5e"
+"checksum zerocopy 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)" = "992b9b31f80fd4a167f903f879b8ca43d6716cc368ea01df90538baa2dd34056"
+"checksum zerocopy-derive 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)" = "b090467ecd0624026e8a6405d343ac7382592530d54881330b3fc8e400280fa5"
diff --git a/Cargo.toml b/Cargo.toml
index a42e2b2..18f05ff 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -64,6 +64,7 @@ pulseaudio-backend = ["librespot-playback/pulseaudio-backend"]
 jackaudio-backend = ["librespot-playback/jackaudio-backend"]
 rodio-backend = ["librespot-playback/rodio-backend"]
 sdl-backend = ["librespot-playback/sdl-backend"]
+gstreamer-backend = ["librespot-playback/gstreamer-backend"]
 
 with-tremor = ["librespot-audio/with-tremor"]
 with-vorbis = ["librespot-audio/with-vorbis"]
diff --git a/playback/Cargo.toml b/playback/Cargo.toml
index d7d1c5b..3d6fee6 100644
--- a/playback/Cargo.toml
+++ b/playback/Cargo.toml
@@ -28,6 +28,10 @@ libc            = { version = "0.2", optional = true }
 rodio           = { version = "0.9", optional = true, default-features = false }
 cpal            = { version = "0.8", optional = true }
 sdl2            = { version = "0.32", optional = true }
+gstreamer       = { version = "0.15.0", optional = true }
+gstreamer-app   = { version = "0.15.0", optional = true }
+glib            = { version = "0.9.0", optional = true }
+zerocopy        = { version = "0.2.8", optional = true }
 
 [features]
 alsa-backend = ["alsa"]
@@ -36,3 +40,4 @@ pulseaudio-backend = ["libpulse-sys", "libc"]
 jackaudio-backend = ["jack"]
 rodio-backend = ["rodio", "cpal"]
 sdl-backend = ["sdl2"]
+gstreamer-backend = ["gstreamer", "gstreamer-app", "glib", "zerocopy"]
\ No newline at end of file
diff --git a/playback/src/audio_backend/gstreamer.rs b/playback/src/audio_backend/gstreamer.rs
new file mode 100644
index 0000000..93aae00
--- /dev/null
+++ b/playback/src/audio_backend/gstreamer.rs
@@ -0,0 +1,129 @@
+use super::{Open, Sink};
+use std::{io, thread, time, process::exit};
+use std::sync::mpsc::{sync_channel, SyncSender};
+use gst::prelude::*;
+use gst::*;
+use gst_app::*;
+use glib::MainLoop;
+use zerocopy::*;
+
+pub struct GstreamerSink {
+    tx: SyncSender<Vec<i16>>,
+    pipeline: gst::Pipeline
+}
+
+impl Open for GstreamerSink {
+    fn open(device: Option<String>) -> GstreamerSink {
+        gst::init();
+        let pipeline_str_preamble = r#"appsrc caps="audio/x-raw,format=S16LE,layout=interleaved,channels=2,rate=44100" block=true max-bytes=4096 name=appsrc0 "#;
+        let pipeline_str_rest = r#" ! audioconvert ! autoaudiosink"#;
+        let pipeline_str : String = match device {
+            Some(x) => format!("{}{}", pipeline_str_preamble, x),
+            None => format!("{}{}", pipeline_str_preamble, pipeline_str_rest)
+        };
+
+        gst::init().unwrap();
+        let pipelinee = gst::parse_launch(&*pipeline_str).expect("New Pipeline error");
+        let pipeline = pipelinee.dynamic_cast::<gst::Pipeline>().expect("Couldnt cast pipeline element at runtime!");
+        let mut bus = pipeline.get_bus().expect("Couldn't get bus from pipeline");
+        let mut mainloop = glib::MainLoop::new(None, false);
+        let mut appsrce : gst::Element = pipeline.get_by_name("appsrc0").expect("Couldn't get appsrc from pipeline");
+        let mut appsrc : gst_app::AppSrc = appsrce.dynamic_cast::<gst_app::AppSrc>().expect("Couldnt cast AppSrc element at runtime!");
+        //let mut appsrc = gst_app::AppSrc::new_from_element(appsrc_element.to_element());
+        let bufferpool = gst::BufferPool::new();
+        let appsrc_caps = appsrc.get_caps().expect("get appsrc caps failed");
+        let mut conf = bufferpool.get_config();
+        conf.set_params(Some(&appsrc_caps), 2048 * 2, 0, 0);
+        if bufferpool.set_active(true).is_err(){
+            panic!("Couldn't activate buffer pool");
+        }
+
+        /*
+        thread::spawn(move || {
+        let bus_receiver = bus.receiver();
+            for message in bus_receiver.iter() {
+                match message.parse() {
+                    gst::message::StateChanged(x) =>
+                        println!("element `{}` state changed", message.src_name()),
+                    gst::message::Error(x) => {
+                        println!("error msg from element `{}`: {}, quitting", message.src_name(), error.message());
+                        break;
+                    },
+                    gst::message::Eos(ref _msg) => {
+                        println!("eos received; quitting");
+                        break;
+                    },
+                    _ =>
+                        println!("Pipe message: {} from {} at {}", message.type_name(), message.src_name(), message.timestamp())
+                }
+            }
+        });*/
+
+        let (tx, rx) = sync_channel::<Vec<i16>>(64);
+        thread::spawn(move || {
+            for data in rx {
+                let mut buffer = bufferpool.acquire_buffer(None).expect("acquire buffer");
+
+                //assert!(data.len() <= buffer.len::<i16>());
+                let mutbuf = buffer.make_mut();
+                mutbuf.set_size(data.len() * 2);
+                mutbuf.map_writable().unwrap().as_mut_slice().clone_from_slice(&data[..].as_bytes());
+
+                //buffer.set_live(true);
+                let res = appsrc.push_buffer(buffer).expect("Failed to push buffer");
+            }
+        });
+
+        thread::spawn(move || {
+            unsafe {
+                let thread_mainloop = mainloop;
+                let watch_mainloop = thread_mainloop.clone();
+                bus.add_watch(move |_, msg| {
+                    use gst::MessageView;
+                    match msg.view() {
+                        MessageView::Eos(..) => watch_mainloop.quit(),
+                        MessageView::Error(err) => {
+                            println!(
+                                "Error from {:?}: {} ({:?})",
+                                err.get_src().map(|s| s.get_path_string()),
+                                err.get_error(),
+                                err.get_debug()
+                            );
+                            watch_mainloop.quit();
+                        }
+                        _ => (),
+                    };
+            
+                    glib::Continue(true)
+                })
+                .expect("Failed to add bus watch");
+                thread_mainloop.run();
+            }
+        });
+
+        GstreamerSink {
+            tx: tx,
+            pipeline: pipeline
+        }
+    }
+}
+
+impl Sink for GstreamerSink {
+    fn start(&mut self) -> io::Result<()> {
+        //self.pipeline.play();
+        self.pipeline.set_state(gst::State::Playing).expect("Unable to set the pipeline to the `Playing` state");
+        Ok(())
+    }
+    fn stop(&mut self) -> io::Result<()> {
+        //self.pipeline.pause();
+        self.pipeline.set_state(gst::State::Paused).expect("Unable to set the pipeline to the `Paused` state");
+        Ok(())
+    }
+    fn write(&mut self, data: &[i16]) -> io::Result<()> {
+        // Copy expensively to avoid thread synchronization
+        let data = data.to_vec();
+        self.tx.send(data).expect("tx send failed in write function");
+
+        Ok(())
+    }
+}
\ No newline at end of file
diff --git a/playback/src/audio_backend/mod.rs b/playback/src/audio_backend/mod.rs
index bdf309a..48f4f61 100644
--- a/playback/src/audio_backend/mod.rs
+++ b/playback/src/audio_backend/mod.rs
@@ -34,6 +34,11 @@ mod jackaudio;
 #[cfg(feature = "jackaudio-backend")]
 use self::jackaudio::JackSink;
 
+#[cfg(feature = "gstreamer-backend")]
+mod gstreamer;
+#[cfg(feature = "gstreamer-backend")]
+use self::gstreamer::GstreamerSink;
+
 #[cfg(feature = "rodio-backend")]
 mod rodio;
 #[cfg(feature = "rodio-backend")]
@@ -55,6 +60,8 @@ pub const BACKENDS: &'static [(&'static str, fn(Option<String>) -> Box<Sink>)] =
     ("pulseaudio", mk_sink::<PulseAudioSink>),
     #[cfg(feature = "jackaudio-backend")]
     ("jackaudio", mk_sink::<JackSink>),
+    #[cfg(feature = "gstreamer-backend")]
+    ("gstreamer", mk_sink::<GstreamerSink>),
     #[cfg(feature = "rodio-backend")]
     ("rodio", mk_sink::<RodioSink>),
     #[cfg(feature = "sdl-backend")]
diff --git a/playback/src/lib.rs b/playback/src/lib.rs
index aeb0407..a3a54ec 100644
--- a/playback/src/lib.rs
+++ b/playback/src/lib.rs
@@ -16,6 +16,15 @@ extern crate libpulse_sys;
 #[cfg(feature = "jackaudio-backend")]
 extern crate jack;
 
+#[cfg(feature = "gstreamer-backend")]
+extern crate gstreamer as gst;
+#[cfg(feature = "gstreamer-backend")]
+extern crate gstreamer_app as gst_app;
+#[cfg(feature = "gstreamer-backend")]
+extern crate glib;
+#[cfg(feature = "gstreamer-backend")]
+extern crate zerocopy;
+
 #[cfg(feature = "sdl-backend")]
 extern crate sdl2;
 

From ed04c049cc484d5e49de5d21b43499c7d8688a91 Mon Sep 17 00:00:00 2001
From: Sean McNamara <smcnam@gmail.com>
Date: Wed, 25 Dec 2019 12:19:48 -0500
Subject: [PATCH 02/13] Working proof of concept with up to date gstreamer
 bindings and Rust 2018.

---
 playback/src/audio_backend/gstreamer.rs | 51 ++++++-------------------
 1 file changed, 11 insertions(+), 40 deletions(-)

diff --git a/playback/src/audio_backend/gstreamer.rs b/playback/src/audio_backend/gstreamer.rs
index 93aae00..be48a74 100644
--- a/playback/src/audio_backend/gstreamer.rs
+++ b/playback/src/audio_backend/gstreamer.rs
@@ -8,7 +8,7 @@ use glib::MainLoop;
 use zerocopy::*;
 
 pub struct GstreamerSink {
-    tx: SyncSender<Vec<i16>>,
+    tx: SyncSender<Vec<u8>>,
     pipeline: gst::Pipeline
 }
 
@@ -21,6 +21,7 @@ impl Open for GstreamerSink {
             Some(x) => format!("{}{}", pipeline_str_preamble, x),
             None => format!("{}{}", pipeline_str_preamble, pipeline_str_rest)
         };
+        println!("Pipeline: {}", pipeline_str);
 
         gst::init().unwrap();
         let pipelinee = gst::parse_launch(&*pipeline_str).expect("New Pipeline error");
@@ -29,47 +30,20 @@ impl Open for GstreamerSink {
         let mut mainloop = glib::MainLoop::new(None, false);
         let mut appsrce : gst::Element = pipeline.get_by_name("appsrc0").expect("Couldn't get appsrc from pipeline");
         let mut appsrc : gst_app::AppSrc = appsrce.dynamic_cast::<gst_app::AppSrc>().expect("Couldnt cast AppSrc element at runtime!");
-        //let mut appsrc = gst_app::AppSrc::new_from_element(appsrc_element.to_element());
         let bufferpool = gst::BufferPool::new();
         let appsrc_caps = appsrc.get_caps().expect("get appsrc caps failed");
         let mut conf = bufferpool.get_config();
-        conf.set_params(Some(&appsrc_caps), 2048 * 2, 0, 0);
-        if bufferpool.set_active(true).is_err(){
-            panic!("Couldn't activate buffer pool");
-        }
+        conf.set_params(Some(&appsrc_caps), 8192, 0, 0);
+        bufferpool.set_config(conf).expect("Couldn't configure the buffer pool");
+        bufferpool.set_active(true).expect("Couldn't activate buffer pool");
 
-        /*
-        thread::spawn(move || {
-        let bus_receiver = bus.receiver();
-            for message in bus_receiver.iter() {
-                match message.parse() {
-                    gst::message::StateChanged(x) =>
-                        println!("element `{}` state changed", message.src_name()),
-                    gst::message::Error(x) => {
-                        println!("error msg from element `{}`: {}, quitting", message.src_name(), error.message());
-                        break;
-                    },
-                    gst::message::Eos(ref _msg) => {
-                        println!("eos received; quitting");
-                        break;
-                    },
-                    _ =>
-                        println!("Pipe message: {} from {} at {}", message.type_name(), message.src_name(), message.timestamp())
-                }
-            }
-        });*/
-
-        let (tx, rx) = sync_channel::<Vec<i16>>(64);
+        let (tx, rx) = sync_channel::<Vec<u8>>(128);
         thread::spawn(move || {
             for data in rx {
                 let mut buffer = bufferpool.acquire_buffer(None).expect("acquire buffer");
-
-                //assert!(data.len() <= buffer.len::<i16>());
                 let mutbuf = buffer.make_mut();
-                mutbuf.set_size(data.len() * 2);
-                mutbuf.map_writable().unwrap().as_mut_slice().clone_from_slice(&data[..].as_bytes());
-
-                //buffer.set_live(true);
+                mutbuf.set_size(data.len());
+                mutbuf.copy_from_slice(0, data.as_bytes());
                 let res = appsrc.push_buffer(buffer).expect("Failed to push buffer");
             }
         });
@@ -110,20 +84,17 @@ impl Open for GstreamerSink {
 
 impl Sink for GstreamerSink {
     fn start(&mut self) -> io::Result<()> {
-        //self.pipeline.play();
         self.pipeline.set_state(gst::State::Playing).expect("Unable to set the pipeline to the `Playing` state");
         Ok(())
     }
     fn stop(&mut self) -> io::Result<()> {
-        //self.pipeline.pause();
         self.pipeline.set_state(gst::State::Paused).expect("Unable to set the pipeline to the `Paused` state");
         Ok(())
     }
     fn write(&mut self, data: &[i16]) -> io::Result<()> {
-        // Copy expensively to avoid thread synchronization
-        let data = data.to_vec();
-        self.tx.send(data).expect("tx send failed in write function");
-
+        // Copy expensively (in to_vec()) to avoid thread synchronization
+        let deighta : &[u8] = data.as_bytes();
+        self.tx.send(deighta.to_vec()).expect("tx send failed in write function");
         Ok(())
     }
 }
\ No newline at end of file

From 664c76b2011d2de0f3e191d505c21d08648a9acb Mon Sep 17 00:00:00 2001
From: Sean McNamara <smcnam@gmail.com>
Date: Wed, 25 Dec 2019 16:36:30 -0500
Subject: [PATCH 03/13] Fix playback on track change. Pause/resume is still
 weird.

---
 playback/src/audio_backend/gstreamer.rs | 19 +++++++++++--------
 1 file changed, 11 insertions(+), 8 deletions(-)

diff --git a/playback/src/audio_backend/gstreamer.rs b/playback/src/audio_backend/gstreamer.rs
index be48a74..37f5fcf 100644
--- a/playback/src/audio_backend/gstreamer.rs
+++ b/playback/src/audio_backend/gstreamer.rs
@@ -25,11 +25,11 @@ impl Open for GstreamerSink {
 
         gst::init().unwrap();
         let pipelinee = gst::parse_launch(&*pipeline_str).expect("New Pipeline error");
-        let pipeline = pipelinee.dynamic_cast::<gst::Pipeline>().expect("Couldnt cast pipeline element at runtime!");
+        let pipeline = pipelinee.dynamic_cast::<gst::Pipeline>().expect("Couldn't cast pipeline element at runtime!");
         let mut bus = pipeline.get_bus().expect("Couldn't get bus from pipeline");
         let mut mainloop = glib::MainLoop::new(None, false);
         let mut appsrce : gst::Element = pipeline.get_by_name("appsrc0").expect("Couldn't get appsrc from pipeline");
-        let mut appsrc : gst_app::AppSrc = appsrce.dynamic_cast::<gst_app::AppSrc>().expect("Couldnt cast AppSrc element at runtime!");
+        let mut appsrc : gst_app::AppSrc = appsrce.dynamic_cast::<gst_app::AppSrc>().expect("Couldn't cast AppSrc element at runtime!");
         let bufferpool = gst::BufferPool::new();
         let appsrc_caps = appsrc.get_caps().expect("get appsrc caps failed");
         let mut conf = bufferpool.get_config();
@@ -40,11 +40,14 @@ impl Open for GstreamerSink {
         let (tx, rx) = sync_channel::<Vec<u8>>(128);
         thread::spawn(move || {
             for data in rx {
-                let mut buffer = bufferpool.acquire_buffer(None).expect("acquire buffer");
-                let mutbuf = buffer.make_mut();
-                mutbuf.set_size(data.len());
-                mutbuf.copy_from_slice(0, data.as_bytes());
-                let res = appsrc.push_buffer(buffer).expect("Failed to push buffer");
+                let mut buffer = bufferpool.acquire_buffer(None);
+                if(!buffer.is_err()) {
+                    let mut okbuffer = buffer.unwrap();
+                    let mutbuf = okbuffer.make_mut();
+                    mutbuf.set_size(data.len());
+                    mutbuf.copy_from_slice(0, data.as_bytes());
+                    let eat = appsrc.push_buffer(okbuffer);
+                }
             }
         });
 
@@ -88,7 +91,7 @@ impl Sink for GstreamerSink {
         Ok(())
     }
     fn stop(&mut self) -> io::Result<()> {
-        self.pipeline.set_state(gst::State::Paused).expect("Unable to set the pipeline to the `Paused` state");
+        self.pipeline.set_state(gst::State::Ready).expect("Unable to set the pipeline to the `Ready` state");
         Ok(())
     }
     fn write(&mut self, data: &[i16]) -> io::Result<()> {

From d30ffcd1c0fa673332152417887faf78abd6bbc2 Mon Sep 17 00:00:00 2001
From: Sean McNamara <smcnam@gmail.com>
Date: Wed, 25 Dec 2019 17:51:22 -0500
Subject: [PATCH 04/13] Mostly fix play/pause/stop behavior. Pause is latent.

---
 playback/src/audio_backend/gstreamer.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/playback/src/audio_backend/gstreamer.rs b/playback/src/audio_backend/gstreamer.rs
index 37f5fcf..51edb15 100644
--- a/playback/src/audio_backend/gstreamer.rs
+++ b/playback/src/audio_backend/gstreamer.rs
@@ -78,6 +78,8 @@ impl Open for GstreamerSink {
             }
         });
 
+        pipeline.set_state(gst::State::Playing).expect("Unable to set the pipeline to the `Playing` state");
+
         GstreamerSink {
             tx: tx,
             pipeline: pipeline
@@ -87,11 +89,9 @@ impl Open for GstreamerSink {
 
 impl Sink for GstreamerSink {
     fn start(&mut self) -> io::Result<()> {
-        self.pipeline.set_state(gst::State::Playing).expect("Unable to set the pipeline to the `Playing` state");
         Ok(())
     }
     fn stop(&mut self) -> io::Result<()> {
-        self.pipeline.set_state(gst::State::Ready).expect("Unable to set the pipeline to the `Ready` state");
         Ok(())
     }
     fn write(&mut self, data: &[i16]) -> io::Result<()> {

From c5c455236e86044179eb882c178f47b24beb22f8 Mon Sep 17 00:00:00 2001
From: Sean McNamara <smcnam@gmail.com>
Date: Mon, 6 Apr 2020 21:06:40 -0400
Subject: [PATCH 05/13] Merge

---
 Cargo.lock | 372 +++++++++++++++++++++++++++++++++++++++++++++++++----
 1 file changed, 350 insertions(+), 22 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index 0ed0911..12b53b7 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -57,7 +57,7 @@ dependencies = [
  "approx 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "libm 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-complex 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "num-traits 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -93,7 +93,7 @@ name = "approx"
 version = "0.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "num-traits 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -123,6 +123,11 @@ name = "autocfg"
 version = "0.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "autocfg"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "backtrace"
 version = "0.3.33"
@@ -300,8 +305,8 @@ version = "0.4.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
- "num-integer 0.1.41 (registry+https://github.com/rust-lang/crates.io-index)",
- "num-traits 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-integer 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "time 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -532,6 +537,19 @@ name = "futures"
 version = "0.1.28"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "futures-channel"
+version = "0.3.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "futures-core 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "futures-core"
+version = "0.3.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "futures-cpupool"
 version = "0.1.8"
@@ -541,6 +559,51 @@ dependencies = [
  "num_cpus 1.10.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "futures-executor"
+version = "0.3.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "futures-core 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-task 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-util 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "futures-macro"
+version = "0.3.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "proc-macro-hack 0.5.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2 1.0.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.14 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "futures-sink"
+version = "0.3.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "futures-task"
+version = "0.3.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "futures-util"
+version = "0.3.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "futures-core 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-macro 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-task 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pin-utils 0.1.0-alpha.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro-hack 0.5.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro-nested 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "slab 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "gcc"
 version = "0.3.55"
@@ -571,11 +634,137 @@ dependencies = [
  "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "glib"
+version = "0.9.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "bitflags 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-channel 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-core 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-executor 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-task 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-util 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "glib-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gobject-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "glib-sys"
+version = "0.9.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pkg-config 0.3.15 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "glob"
 version = "0.2.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "gobject-sys"
+version = "0.9.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "glib-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pkg-config 0.3.15 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "gstreamer"
+version = "0.15.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "bitflags 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cfg-if 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-channel 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-core 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-util 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "glib 0.9.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "glib-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gobject-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gstreamer-sys 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "muldiv 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-rational 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "paste 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "gstreamer-app"
+version = "0.15.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "bitflags 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-core 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-sink 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "glib 0.9.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "glib-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gobject-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gstreamer 0.15.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gstreamer-app-sys 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gstreamer-base 0.15.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gstreamer-sys 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "gstreamer-app-sys"
+version = "0.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "glib-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gstreamer-base-sys 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gstreamer-sys 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pkg-config 0.3.15 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "gstreamer-base"
+version = "0.15.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "bitflags 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "glib 0.9.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "glib-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gobject-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gstreamer 0.15.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gstreamer-base-sys 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gstreamer-sys 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "gstreamer-base-sys"
+version = "0.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "glib-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gobject-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gstreamer-sys 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pkg-config 0.3.15 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "gstreamer-sys"
+version = "0.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "glib-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gobject-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pkg-config 0.3.15 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "hex"
 version = "0.3.2"
@@ -809,7 +998,7 @@ dependencies = [
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  "log 0.4.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-bigint 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "num-traits 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "tempfile 3.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "vorbis 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
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@@ -859,8 +1048,8 @@ dependencies = [
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  "log 0.4.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-bigint 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
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- "num-traits 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-integer 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "pbkdf2 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "protobuf 2.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -898,6 +1087,9 @@ dependencies = [
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  "cpal 0.8.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)",
+ "glib 0.9.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gstreamer 0.15.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gstreamer-app 0.15.3 (registry+https://github.com/rust-lang/crates.io-index)",
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  "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
  "libpulse-sys 0.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -909,6 +1101,7 @@ dependencies = [
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  "sdl2 0.32.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "shell-words 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "zerocopy 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1061,6 +1254,11 @@ dependencies = [
  "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "multimap"
 version = "0.4.0"
@@ -1079,7 +1277,7 @@ dependencies = [
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- "num-traits 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "typenum 1.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1136,9 +1334,9 @@ name = "num"
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 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "num-integer 0.1.41 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-integer 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-iter 0.1.39 (registry+https://github.com/rust-lang/crates.io-index)",
- "num-traits 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1146,8 +1344,8 @@ name = "num-bigint"
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 dependencies = [
- "num-integer 0.1.41 (registry+https://github.com/rust-lang/crates.io-index)",
- "num-traits 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-integer 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1156,16 +1354,16 @@ version = "0.2.3"
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 dependencies = [
  "autocfg 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "num-traits 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
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+version = "0.1.42"
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- "num-traits 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "autocfg 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1174,16 +1372,26 @@ version = "0.1.39"
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 dependencies = [
  "autocfg 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
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- "num-traits 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-integer 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
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+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
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+ "num-integer 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
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 [[package]]
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 dependencies = [
- "autocfg 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "autocfg 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1246,6 +1454,26 @@ dependencies = [
  "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "paste"
+version = "0.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "paste-impl 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro-hack 0.5.11 (registry+https://github.com/rust-lang/crates.io-index)",
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+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
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+ "proc-macro2 1.0.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.14 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
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@@ -1270,6 +1498,11 @@ name = "percent-encoding"
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 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "pin-utils"
+version = "0.1.0-alpha.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
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@@ -1299,6 +1532,21 @@ name = "ppv-lite86"
 version = "0.2.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "proc-macro-hack"
+version = "0.5.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "proc-macro2 1.0.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.14 (registry+https://github.com/rust-lang/crates.io-index)",
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+
+[[package]]
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+version = "0.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
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@@ -1315,6 +1563,14 @@ dependencies = [
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 ]
 
+[[package]]
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+version = "1.0.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "protobuf"
 version = "2.8.1"
@@ -1358,6 +1614,14 @@ dependencies = [
  "proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "quote"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "proc-macro2 1.0.8 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "rand"
 version = "0.3.23"
@@ -1835,6 +2099,16 @@ dependencies = [
  "unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "syn"
+version = "1.0.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "proc-macro2 1.0.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
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@@ -2193,6 +2467,11 @@ name = "unicode-xid"
 version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "unicode-xid"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "url"
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@@ -2362,6 +2641,25 @@ dependencies = [
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 ]
 
+[[package]]
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+version = "0.2.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "byteorder 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "zerocopy-derive 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
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+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 0.15.42 (registry+https://github.com/rust-lang/crates.io-index)",
+ "synstructure 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)",
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+
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@@ -2377,6 +2675,7 @@ dependencies = [
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@@ -2426,12 +2725,28 @@ dependencies = [
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@@ -2468,6 +2783,7 @@ dependencies = [
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@@ -2478,9 +2794,10 @@ dependencies = [
 "checksum num 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)" = "4703ad64153382334aa8db57c637364c322d3372e097840c72000dabdcf6156e"
 "checksum num-bigint 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "57450397855d951f1a41305e54851b1a7b8f5d2e349543a02a2effe25459f718"
 "checksum num-complex 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "fcb0cf31fb3ff77e6d2a6ebd6800df7fdcd106f2ad89113c9130bcd07f93dffc"
-"checksum num-integer 0.1.41 (registry+https://github.com/rust-lang/crates.io-index)" = "b85e541ef8255f6cf42bbfe4ef361305c6c135d10919ecc26126c4e5ae94bc09"
+"checksum num-integer 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)" = "3f6ea62e9d81a77cd3ee9a2a5b9b609447857f3d358704331e4ef39eb247fcba"
 "checksum num-iter 0.1.39 (registry+https://github.com/rust-lang/crates.io-index)" = "76bd5272412d173d6bf9afdf98db8612bbabc9a7a830b7bfc9c188911716132e"
-"checksum num-traits 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)" = "6ba9a427cfca2be13aa6f6403b0b7e7368fe982bfa16fccc450ce74c46cd9b32"
+"checksum num-rational 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "da4dc79f9e6c81bef96148c8f6b8e72ad4541caa4a24373e900a36da07de03a3"
+"checksum num-traits 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)" = "c62be47e61d1842b9170f0fdeec8eba98e60e90e5446449a0545e5152acd7096"
 "checksum num_cpus 1.10.1 (registry+https://github.com/rust-lang/crates.io-index)" = "bcef43580c035376c0705c42792c294b66974abbfd2789b511784023f71f3273"
 "checksum ogg 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "d79f1db9148be9d0e174bb3ac890f6030fcb1ed947267c5a91ee4c91b5a91e15"
 "checksum ogg-sys 0.0.9 (registry+https://github.com/rust-lang/crates.io-index)" = "a95b8c172e17df1a41bf8d666301d3b2c4efeb90d9d0415e2a4dc0668b35fdb2"
@@ -2488,21 +2805,28 @@ dependencies = [
 "checksum owning_ref 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "49a4b8ea2179e6a2e27411d3bca09ca6dd630821cf6894c6c7c8467a8ee7ef13"
 "checksum parking_lot 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)" = "ab41b4aed082705d1056416ae4468b6ea99d52599ecf3169b00088d43113e337"
 "checksum parking_lot_core 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "94c8c7923936b28d546dfd14d4472eaf34c99b14e1c973a32b3e6d4eb04298c9"
+"checksum paste 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)" = "423a519e1c6e828f1e73b720f9d9ed2fa643dce8a7737fb43235ce0b41eeaa49"
+"checksum paste-impl 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)" = "4214c9e912ef61bf42b81ba9a47e8aad1b2ffaf739ab162bf96d1e011f54e6c5"
 "checksum pbkdf2 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "006c038a43a45995a9670da19e67600114740e8511d4333bf97a56e66a7542d9"
 "checksum peeking_take_while 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "19b17cddbe7ec3f8bc800887bab5e717348c95ea2ca0b1bf0837fb964dc67099"
 "checksum percent-encoding 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "31010dd2e1ac33d5b46a5b413495239882813e0369f8ed8a5e266f173602f831"
+"checksum pin-utils 0.1.0-alpha.4 (registry+https://github.com/rust-lang/crates.io-index)" = "5894c618ce612a3fa23881b152b608bafb8c56cfc22f434a3ba3120b40f7b587"
 "checksum pkg-config 0.3.15 (registry+https://github.com/rust-lang/crates.io-index)" = "a7c1d2cfa5a714db3b5f24f0915e74fcdf91d09d496ba61329705dda7774d2af"
 "checksum portaudio-rs 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "fc0e6b38f00fae9dde9a9832a2b54405988c6dcaf2870e6f9551546b447bbd7f"
 "checksum portaudio-sys 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "5194a4fa953b4ffd851c320ef6f0484cd7278cb7169ea9d6c433e49b23f7b7f5"
 "checksum ppv-lite86 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)" = "e3cbf9f658cdb5000fcf6f362b8ea2ba154b9f146a61c7a20d647034c6b6561b"
+"checksum proc-macro-hack 0.5.11 (registry+https://github.com/rust-lang/crates.io-index)" = "ecd45702f76d6d3c75a80564378ae228a85f0b59d2f3ed43c91b4a69eb2ebfc5"
+"checksum proc-macro-nested 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "369a6ed065f249a159e06c45752c780bda2fb53c995718f9e484d08daa9eb42e"
 "checksum proc-macro2 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "cd07deb3c6d1d9ff827999c7f9b04cdfd66b1b17ae508e14fe47b620f2282ae0"
 "checksum proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)" = "cf3d2011ab5c909338f7887f4fc896d35932e29146c12c8d01da6b22a80ba759"
+"checksum proc-macro2 1.0.8 (registry+https://github.com/rust-lang/crates.io-index)" = "3acb317c6ff86a4e579dfa00fc5e6cca91ecbb4e7eb2df0468805b674eb88548"
 "checksum protobuf 2.8.1 (registry+https://github.com/rust-lang/crates.io-index)" = "40361836defdd5871ff7e84096c6f6444af7fc157f8ef1789f54f147687caa20"
 "checksum protobuf-codegen 2.8.1 (registry+https://github.com/rust-lang/crates.io-index)" = "12c6abd78435445fc86898ebbd0521a68438063d4a73e23527b7134e6bf58b4a"
 "checksum protobuf-codegen-pure 2.8.1 (registry+https://github.com/rust-lang/crates.io-index)" = "c1646acda5319f5b28b0bff4a484324df43ddae2c0f5a3f3e63c0b26095cd600"
 "checksum quick-error 1.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "9274b940887ce9addde99c4eee6b5c44cc494b182b97e73dc8ffdcb3397fd3f0"
 "checksum quote 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "1eca14c727ad12702eb4b6bfb5a232287dcf8385cb8ca83a3eeaf6519c44c408"
 "checksum quote 0.6.13 (registry+https://github.com/rust-lang/crates.io-index)" = "6ce23b6b870e8f94f81fb0a363d65d86675884b34a09043c81e5562f11c1f8e1"
+"checksum quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "053a8c8bcc71fcce321828dc897a98ab9760bef03a4fc36693c231e5b3216cfe"
 "checksum rand 0.3.23 (registry+https://github.com/rust-lang/crates.io-index)" = "64ac302d8f83c0c1974bf758f6b041c6c8ada916fbb44a609158ca8b064cc76c"
 "checksum rand 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)" = "552840b97013b1a26992c11eac34bdd778e464601a4c2054b5f0bff7c6761293"
 "checksum rand 0.5.6 (registry+https://github.com/rust-lang/crates.io-index)" = "c618c47cd3ebd209790115ab837de41425723956ad3ce2e6a7f09890947cacb9"
@@ -2562,6 +2886,7 @@ dependencies = [
 "checksum strsim 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "8ea5119cdb4c55b55d432abb513a0429384878c15dde60cc77b1c99de1a95a6a"
 "checksum subtle 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "2d67a5a62ba6e01cb2192ff309324cb4875d0c451d55fe2319433abe7a05a8ee"
 "checksum syn 0.15.42 (registry+https://github.com/rust-lang/crates.io-index)" = "eadc09306ca51a40555dd6fc2b415538e9e18bc9f870e47b1a524a79fe2dcf5e"
+"checksum syn 1.0.14 (registry+https://github.com/rust-lang/crates.io-index)" = "af6f3550d8dff9ef7dc34d384ac6f107e5d31c8f57d9f28e0081503f547ac8f5"
 "checksum synstructure 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)" = "02353edf96d6e4dc81aea2d8490a7e9db177bf8acb0e951c24940bf866cb313f"
 "checksum take 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b157868d8ac1f56b64604539990685fa7611d8fa9e5476cf0c02cf34d32917c5"
 "checksum tempfile 3.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "7a6e24d9338a0a5be79593e2fa15a648add6138caa803e2d5bc782c371732ca9"
@@ -2595,6 +2920,7 @@ dependencies = [
 "checksum unicode-normalization 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)" = "141339a08b982d942be2ca06ff8b076563cbe223d1befd5450716790d44e2426"
 "checksum unicode-width 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "882386231c45df4700b275c7ff55b6f3698780a650026380e72dabe76fa46526"
 "checksum unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "fc72304796d0818e357ead4e000d19c9c174ab23dc11093ac919054d20a6a7fc"
+"checksum unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "826e7639553986605ec5979c7dd957c7895e93eabed50ab2ffa7f6128a75097c"
 "checksum url 1.7.2 (registry+https://github.com/rust-lang/crates.io-index)" = "dd4e7c0d531266369519a4aa4f399d748bd37043b00bde1e4ff1f60a120b355a"
 "checksum utf8-ranges 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)" = "9d50aa7650df78abf942826607c62468ce18d9019673d4a2ebe1865dbb96ffde"
 "checksum uuid 0.7.4 (registry+https://github.com/rust-lang/crates.io-index)" = "90dbc611eb48397705a6b0f6e917da23ae517e4d127123d2cf7674206627d32a"
@@ -2616,3 +2942,5 @@ dependencies = [
 "checksum winapi-x86_64-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
 "checksum wincolor 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "561ed901ae465d6185fa7864d63fbd5720d0ef718366c9a4dc83cf6170d7e9ba"
 "checksum ws2_32-sys 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "d59cefebd0c892fa2dd6de581e937301d8552cb44489cdff035c6187cb63fa5e"
+"checksum zerocopy 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)" = "992b9b31f80fd4a167f903f879b8ca43d6716cc368ea01df90538baa2dd34056"
+"checksum zerocopy-derive 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)" = "b090467ecd0624026e8a6405d343ac7382592530d54881330b3fc8e400280fa5"

From f192bd107904199b5f286a7cc1cc70b9152ece8f Mon Sep 17 00:00:00 2001
From: Sean McNamara <smcnam@gmail.com>
Date: Mon, 6 Apr 2020 23:29:29 -0400
Subject: [PATCH 06/13] gstreamer-1.0 backend: Version updates and squelch
 warnings

---
 playback/Cargo.toml                     | 14 ++---
 playback/src/audio_backend/gstreamer.rs | 73 +++++++++++--------------
 2 files changed, 40 insertions(+), 47 deletions(-)

diff --git a/playback/Cargo.toml b/playback/Cargo.toml
index b806d01..cfe8730 100644
--- a/playback/Cargo.toml
+++ b/playback/Cargo.toml
@@ -22,18 +22,18 @@ log = "0.4"
 byteorder = "1.3"
 shell-words = "0.1.0"
 
-alsa            = { version = "0.2.1", optional = true }
-portaudio-rs    = { version = "0.3.0", optional = true }
+alsa            = { version = "0.2", optional = true }
+portaudio-rs    = { version = "0.3", optional = true }
 libpulse-sys    = { version = "0.0.0", optional = true }
-jack            = { version = "0.5.3", optional = true }
+jack            = { version = "0.5", optional = true }
 libc            = { version = "0.2", optional = true }
 rodio           = { version = "0.9", optional = true, default-features = false }
 cpal            = { version = "0.8", optional = true }
 sdl2            = { version = "0.32", optional = true }
-gstreamer       = { version = "0.15.0", optional = true }
-gstreamer-app   = { version = "0.15.0", optional = true }
-glib            = { version = "0.9.0", optional = true }
-zerocopy        = { version = "0.2.8", optional = true }
+gstreamer       = { version = "0.15", optional = true }
+gstreamer-app   = { version = "0.15", optional = true }
+glib            = { version = "0.9", optional = true }
+zerocopy        = { version = "0.2", optional = true }
 
 [features]
 alsa-backend = ["alsa"]
diff --git a/playback/src/audio_backend/gstreamer.rs b/playback/src/audio_backend/gstreamer.rs
index 51edb15..c7181bc 100644
--- a/playback/src/audio_backend/gstreamer.rs
+++ b/playback/src/audio_backend/gstreamer.rs
@@ -1,20 +1,17 @@
 use super::{Open, Sink};
-use std::{io, thread, time, process::exit};
+use std::{io, thread};
 use std::sync::mpsc::{sync_channel, SyncSender};
 use gst::prelude::*;
 use gst::*;
-use gst_app::*;
-use glib::MainLoop;
 use zerocopy::*;
 
 pub struct GstreamerSink {
-    tx: SyncSender<Vec<u8>>,
-    pipeline: gst::Pipeline
+    tx: SyncSender<Vec<u8>>
 }
 
 impl Open for GstreamerSink {
     fn open(device: Option<String>) -> GstreamerSink {
-        gst::init();
+        gst::init().expect("Failed to init gstreamer!");
         let pipeline_str_preamble = r#"appsrc caps="audio/x-raw,format=S16LE,layout=interleaved,channels=2,rate=44100" block=true max-bytes=4096 name=appsrc0 "#;
         let pipeline_str_rest = r#" ! audioconvert ! autoaudiosink"#;
         let pipeline_str : String = match device {
@@ -26,10 +23,10 @@ impl Open for GstreamerSink {
         gst::init().unwrap();
         let pipelinee = gst::parse_launch(&*pipeline_str).expect("New Pipeline error");
         let pipeline = pipelinee.dynamic_cast::<gst::Pipeline>().expect("Couldn't cast pipeline element at runtime!");
-        let mut bus = pipeline.get_bus().expect("Couldn't get bus from pipeline");
-        let mut mainloop = glib::MainLoop::new(None, false);
-        let mut appsrce : gst::Element = pipeline.get_by_name("appsrc0").expect("Couldn't get appsrc from pipeline");
-        let mut appsrc : gst_app::AppSrc = appsrce.dynamic_cast::<gst_app::AppSrc>().expect("Couldn't cast AppSrc element at runtime!");
+        let bus = pipeline.get_bus().expect("Couldn't get bus from pipeline");
+        let mainloop = glib::MainLoop::new(None, false);
+        let appsrce : gst::Element = pipeline.get_by_name("appsrc0").expect("Couldn't get appsrc from pipeline");
+        let appsrc : gst_app::AppSrc = appsrce.dynamic_cast::<gst_app::AppSrc>().expect("Couldn't cast AppSrc element at runtime!");
         let bufferpool = gst::BufferPool::new();
         let appsrc_caps = appsrc.get_caps().expect("get appsrc caps failed");
         let mut conf = bufferpool.get_config();
@@ -40,49 +37,45 @@ impl Open for GstreamerSink {
         let (tx, rx) = sync_channel::<Vec<u8>>(128);
         thread::spawn(move || {
             for data in rx {
-                let mut buffer = bufferpool.acquire_buffer(None);
-                if(!buffer.is_err()) {
+                let buffer = bufferpool.acquire_buffer(None);
+                if !buffer.is_err() {
                     let mut okbuffer = buffer.unwrap();
                     let mutbuf = okbuffer.make_mut();
                     mutbuf.set_size(data.len());
-                    mutbuf.copy_from_slice(0, data.as_bytes());
-                    let eat = appsrc.push_buffer(okbuffer);
+                    mutbuf.copy_from_slice(0, data.as_bytes()).expect("Failed to copy from slice");
+                    let _eat = appsrc.push_buffer(okbuffer);
                 }
             }
         });
 
         thread::spawn(move || {
-            unsafe {
-                let thread_mainloop = mainloop;
-                let watch_mainloop = thread_mainloop.clone();
-                bus.add_watch(move |_, msg| {
-                    use gst::MessageView;
-                    match msg.view() {
-                        MessageView::Eos(..) => watch_mainloop.quit(),
-                        MessageView::Error(err) => {
-                            println!(
-                                "Error from {:?}: {} ({:?})",
-                                err.get_src().map(|s| s.get_path_string()),
-                                err.get_error(),
-                                err.get_debug()
-                            );
-                            watch_mainloop.quit();
-                        }
-                        _ => (),
-                    };
-            
-                    glib::Continue(true)
-                })
-                .expect("Failed to add bus watch");
-                thread_mainloop.run();
-            }
+            let thread_mainloop = mainloop;
+            let watch_mainloop = thread_mainloop.clone();
+            bus.add_watch(move |_, msg| {
+                match msg.view() {
+                    MessageView::Eos(..) => watch_mainloop.quit(),
+                    MessageView::Error(err) => {
+                        println!(
+                            "Error from {:?}: {} ({:?})",
+                            err.get_src().map(|s| s.get_path_string()),
+                            err.get_error(),
+                            err.get_debug()
+                        );
+                        watch_mainloop.quit();
+                    }
+                    _ => (),
+                };
+        
+                glib::Continue(true)
+            })
+            .expect("Failed to add bus watch");
+            thread_mainloop.run();
         });
 
         pipeline.set_state(gst::State::Playing).expect("Unable to set the pipeline to the `Playing` state");
 
         GstreamerSink {
-            tx: tx,
-            pipeline: pipeline
+            tx: tx
         }
     }
 }

From 1e9a52bd6e4ec15ebac44198cc0c8e404e08911f Mon Sep 17 00:00:00 2001
From: Sean McNamara <smcnam@gmail.com>
Date: Mon, 6 Apr 2020 23:34:20 -0400
Subject: [PATCH 07/13] Fix auto disposal of pipeline that needs to stay in
 struct

---
 playback/src/audio_backend/gstreamer.rs | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/playback/src/audio_backend/gstreamer.rs b/playback/src/audio_backend/gstreamer.rs
index c7181bc..ae598d0 100644
--- a/playback/src/audio_backend/gstreamer.rs
+++ b/playback/src/audio_backend/gstreamer.rs
@@ -5,8 +5,10 @@ use gst::prelude::*;
 use gst::*;
 use zerocopy::*;
 
+#[allow(dead_code)]
 pub struct GstreamerSink {
-    tx: SyncSender<Vec<u8>>
+    tx: SyncSender<Vec<u8>>,
+    pipeline: gst::Pipeline
 }
 
 impl Open for GstreamerSink {
@@ -75,7 +77,8 @@ impl Open for GstreamerSink {
         pipeline.set_state(gst::State::Playing).expect("Unable to set the pipeline to the `Playing` state");
 
         GstreamerSink {
-            tx: tx
+            tx: tx,
+            pipeline: pipeline
         }
     }
 }

From e7093cb0bc987ad5a8f53e070136fa3b19781e7b Mon Sep 17 00:00:00 2001
From: Sean McNamara <smcnam@gmail.com>
Date: Mon, 6 Apr 2020 23:54:05 -0400
Subject: [PATCH 08/13] gstreamer-backend: rustfmt.

---
 playback/src/audio_backend/gstreamer.rs | 50 ++++++++++++++++---------
 playback/src/lib.rs                     |  4 +-
 2 files changed, 35 insertions(+), 19 deletions(-)

diff --git a/playback/src/audio_backend/gstreamer.rs b/playback/src/audio_backend/gstreamer.rs
index ae598d0..c3e130f 100644
--- a/playback/src/audio_backend/gstreamer.rs
+++ b/playback/src/audio_backend/gstreamer.rs
@@ -1,14 +1,14 @@
 use super::{Open, Sink};
-use std::{io, thread};
-use std::sync::mpsc::{sync_channel, SyncSender};
 use gst::prelude::*;
 use gst::*;
+use std::sync::mpsc::{sync_channel, SyncSender};
+use std::{io, thread};
 use zerocopy::*;
 
 #[allow(dead_code)]
 pub struct GstreamerSink {
     tx: SyncSender<Vec<u8>>,
-    pipeline: gst::Pipeline
+    pipeline: gst::Pipeline,
 }
 
 impl Open for GstreamerSink {
@@ -16,25 +16,35 @@ impl Open for GstreamerSink {
         gst::init().expect("Failed to init gstreamer!");
         let pipeline_str_preamble = r#"appsrc caps="audio/x-raw,format=S16LE,layout=interleaved,channels=2,rate=44100" block=true max-bytes=4096 name=appsrc0 "#;
         let pipeline_str_rest = r#" ! audioconvert ! autoaudiosink"#;
-        let pipeline_str : String = match device {
+        let pipeline_str: String = match device {
             Some(x) => format!("{}{}", pipeline_str_preamble, x),
-            None => format!("{}{}", pipeline_str_preamble, pipeline_str_rest)
+            None => format!("{}{}", pipeline_str_preamble, pipeline_str_rest),
         };
         println!("Pipeline: {}", pipeline_str);
 
         gst::init().unwrap();
         let pipelinee = gst::parse_launch(&*pipeline_str).expect("New Pipeline error");
-        let pipeline = pipelinee.dynamic_cast::<gst::Pipeline>().expect("Couldn't cast pipeline element at runtime!");
+        let pipeline = pipelinee
+            .dynamic_cast::<gst::Pipeline>()
+            .expect("Couldn't cast pipeline element at runtime!");
         let bus = pipeline.get_bus().expect("Couldn't get bus from pipeline");
         let mainloop = glib::MainLoop::new(None, false);
-        let appsrce : gst::Element = pipeline.get_by_name("appsrc0").expect("Couldn't get appsrc from pipeline");
-        let appsrc : gst_app::AppSrc = appsrce.dynamic_cast::<gst_app::AppSrc>().expect("Couldn't cast AppSrc element at runtime!");
+        let appsrce: gst::Element = pipeline
+            .get_by_name("appsrc0")
+            .expect("Couldn't get appsrc from pipeline");
+        let appsrc: gst_app::AppSrc = appsrce
+            .dynamic_cast::<gst_app::AppSrc>()
+            .expect("Couldn't cast AppSrc element at runtime!");
         let bufferpool = gst::BufferPool::new();
         let appsrc_caps = appsrc.get_caps().expect("get appsrc caps failed");
         let mut conf = bufferpool.get_config();
         conf.set_params(Some(&appsrc_caps), 8192, 0, 0);
-        bufferpool.set_config(conf).expect("Couldn't configure the buffer pool");
-        bufferpool.set_active(true).expect("Couldn't activate buffer pool");
+        bufferpool
+            .set_config(conf)
+            .expect("Couldn't configure the buffer pool");
+        bufferpool
+            .set_active(true)
+            .expect("Couldn't activate buffer pool");
 
         let (tx, rx) = sync_channel::<Vec<u8>>(128);
         thread::spawn(move || {
@@ -44,7 +54,9 @@ impl Open for GstreamerSink {
                     let mut okbuffer = buffer.unwrap();
                     let mutbuf = okbuffer.make_mut();
                     mutbuf.set_size(data.len());
-                    mutbuf.copy_from_slice(0, data.as_bytes()).expect("Failed to copy from slice");
+                    mutbuf
+                        .copy_from_slice(0, data.as_bytes())
+                        .expect("Failed to copy from slice");
                     let _eat = appsrc.push_buffer(okbuffer);
                 }
             }
@@ -67,18 +79,20 @@ impl Open for GstreamerSink {
                     }
                     _ => (),
                 };
-        
+
                 glib::Continue(true)
             })
             .expect("Failed to add bus watch");
             thread_mainloop.run();
         });
 
-        pipeline.set_state(gst::State::Playing).expect("Unable to set the pipeline to the `Playing` state");
+        pipeline
+            .set_state(gst::State::Playing)
+            .expect("Unable to set the pipeline to the `Playing` state");
 
         GstreamerSink {
             tx: tx,
-            pipeline: pipeline
+            pipeline: pipeline,
         }
     }
 }
@@ -92,8 +106,10 @@ impl Sink for GstreamerSink {
     }
     fn write(&mut self, data: &[i16]) -> io::Result<()> {
         // Copy expensively (in to_vec()) to avoid thread synchronization
-        let deighta : &[u8] = data.as_bytes();
-        self.tx.send(deighta.to_vec()).expect("tx send failed in write function");
+        let deighta: &[u8] = data.as_bytes();
+        self.tx
+            .send(deighta.to_vec())
+            .expect("tx send failed in write function");
         Ok(())
     }
-}
\ No newline at end of file
+}
diff --git a/playback/src/lib.rs b/playback/src/lib.rs
index 84441a8..e2a2ac8 100644
--- a/playback/src/lib.rs
+++ b/playback/src/lib.rs
@@ -17,13 +17,13 @@ extern crate libpulse_sys;
 #[cfg(feature = "jackaudio-backend")]
 extern crate jack;
 
+#[cfg(feature = "gstreamer-backend")]
+extern crate glib;
 #[cfg(feature = "gstreamer-backend")]
 extern crate gstreamer as gst;
 #[cfg(feature = "gstreamer-backend")]
 extern crate gstreamer_app as gst_app;
 #[cfg(feature = "gstreamer-backend")]
-extern crate glib;
-#[cfg(feature = "gstreamer-backend")]
 extern crate zerocopy;
 
 #[cfg(feature = "sdl-backend")]

From 5d57ac773bcbcac7dcc745f18ef3b0440dcc5c58 Mon Sep 17 00:00:00 2001
From: Sean McNamara <smcnam@gmail.com>
Date: Sun, 10 May 2020 16:26:01 -0400
Subject: [PATCH 09/13] Fix PR feedback

---
 .travis.yml                             |   1 +
 Cargo.lock                              | 333 +++++++++++++-----------
 playback/src/audio_backend/gstreamer.rs |   6 +-
 protocol/src/authentication.rs          |   4 +-
 protocol/src/keyexchange.rs             |   4 +-
 protocol/src/mercury.rs                 |   4 +-
 protocol/src/metadata.rs                |   4 +-
 protocol/src/playlist4changes.rs        |   4 +-
 protocol/src/playlist4content.rs        |   4 +-
 protocol/src/playlist4issues.rs         |   4 +-
 protocol/src/playlist4meta.rs           |   4 +-
 protocol/src/playlist4ops.rs            |   4 +-
 protocol/src/pubsub.rs                  |   4 +-
 protocol/src/spirc.rs                   |   4 +-
 14 files changed, 207 insertions(+), 177 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index 1412ca4..8424be5 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -58,6 +58,7 @@ script:
     - cargo build --locked --no-default-features --features "jackaudio-backend"
     - cargo build --locked --no-default-features --features "rodio-backend"
     - cargo build --locked --no-default-features --features "sdl-backend"
+    - cargo build --locked --no-default-features --features "gstreamer-backend"
     - cargo build --locked --no-default-features --target armv7-unknown-linux-gnueabihf
 
 notifications:
diff --git a/Cargo.lock b/Cargo.lock
index 3e4ef2d..8c13581 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -57,7 +57,7 @@ dependencies = [
  "approx 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "libm 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-complex 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "num-traits 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -85,7 +85,7 @@ name = "approx"
 version = "0.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "num-traits 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -115,11 +115,6 @@ name = "autocfg"
 version = "0.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "autocfg"
-version = "1.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "backtrace"
 version = "0.3.33"
@@ -272,6 +267,11 @@ dependencies = [
  "ppv-lite86 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "c_linked_list"
+version = "1.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "cc"
 version = "1.0.47"
@@ -296,8 +296,8 @@ version = "0.4.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
- "num-integer 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)",
- "num-traits 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-integer 0.1.41 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "time 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -507,15 +507,15 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "futures-channel"
-version = "0.3.4"
+version = "0.3.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "futures-core 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-core 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "futures-core"
-version = "0.3.4"
+version = "0.3.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -529,46 +529,50 @@ dependencies = [
 
 [[package]]
 name = "futures-executor"
-version = "0.3.4"
+version = "0.3.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "futures-core 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-task 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-util 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-core 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-task 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-util 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "futures-macro"
-version = "0.3.4"
+version = "0.3.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "proc-macro-hack 0.5.11 (registry+https://github.com/rust-lang/crates.io-index)",
- "proc-macro2 1.0.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro-hack 0.5.15 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2 1.0.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.14 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.19 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "futures-sink"
-version = "0.3.4"
+version = "0.3.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "futures-task"
-version = "0.3.4"
+version = "0.3.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "once_cell 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+]
 
 [[package]]
 name = "futures-util"
-version = "0.3.4"
+version = "0.3.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "futures-core 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-macro 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-task 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "pin-utils 0.1.0-alpha.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "proc-macro-hack 0.5.11 (registry+https://github.com/rust-lang/crates.io-index)",
- "proc-macro-nested 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-core 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-macro 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-task 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pin-project 0.4.15 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pin-utils 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro-hack 0.5.15 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro-nested 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "slab 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -585,6 +589,26 @@ dependencies = [
  "typenum 1.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "get_if_addrs"
+version = "0.5.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "c_linked_list 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "get_if_addrs-sys 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "get_if_addrs-sys"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "gcc 0.3.55 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "getopts"
 version = "0.2.19"
@@ -608,11 +632,11 @@ version = "0.9.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bitflags 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-channel 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-core 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-executor 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-task 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-util 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-channel 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-core 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-executor 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-task 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-util 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "glib-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "gobject-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -645,14 +669,14 @@ dependencies = [
 
 [[package]]
 name = "gstreamer"
-version = "0.15.3"
+version = "0.15.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bitflags 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "cfg-if 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-channel 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-core 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-util 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-channel 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-core 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-util 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "glib 0.9.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "glib-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "gobject-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -660,24 +684,24 @@ dependencies = [
  "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
  "muldiv 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "num-rational 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "paste 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-rational 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "paste 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "gstreamer-app"
-version = "0.15.3"
+version = "0.15.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bitflags 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-core 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-sink 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-core 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-sink 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "glib 0.9.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "glib-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "gobject-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "gstreamer 0.15.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gstreamer 0.15.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "gstreamer-app-sys 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "gstreamer-base 0.15.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gstreamer-base 0.15.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "gstreamer-sys 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -697,14 +721,14 @@ dependencies = [
 
 [[package]]
 name = "gstreamer-base"
-version = "0.15.3"
+version = "0.15.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bitflags 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "glib 0.9.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "glib-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "gobject-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "gstreamer 0.15.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gstreamer 0.15.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "gstreamer-base-sys 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "gstreamer-sys 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -747,6 +771,16 @@ dependencies = [
  "digest 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "hostname"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "match_cfg 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "httparse"
 version = "1.3.4"
@@ -906,22 +940,19 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "libmdns"
-version = "0.2.4"
+version = "0.2.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "byteorder 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)",
- "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "get_if_addrs 0.5.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "hostname 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "multimap 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "net2 0.2.33 (registry+https://github.com/rust-lang/crates.io-index)",
- "nix 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "quick-error 1.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.5.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "socket2 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-core 0.1.17 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -975,7 +1006,7 @@ dependencies = [
  "librespot-tremor 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-bigint 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "num-traits 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "tempfile 3.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "vorbis 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -991,7 +1022,7 @@ dependencies = [
  "futures 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)",
  "hmac 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "hyper 0.11.27 (registry+https://github.com/rust-lang/crates.io-index)",
- "libmdns 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libmdns 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "librespot-core 0.1.1",
  "librespot-playback 0.1.1",
  "librespot-protocol 0.1.1",
@@ -1025,8 +1056,8 @@ dependencies = [
  "librespot-protocol 0.1.1",
  "log 0.4.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-bigint 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "num-integer 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)",
- "num-traits 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-integer 0.1.41 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "pbkdf2 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "protobuf 2.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1065,8 +1096,8 @@ dependencies = [
  "cpal 0.8.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)",
  "glib 0.9.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "gstreamer 0.15.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "gstreamer-app 0.15.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gstreamer 0.15.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gstreamer-app 0.15.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "jack 0.5.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
  "libpulse-sys 0.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1131,6 +1162,11 @@ dependencies = [
  "cfg-if 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "match_cfg"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "matches"
 version = "0.1.8"
@@ -1246,7 +1282,7 @@ dependencies = [
  "generic-array 0.12.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "matrixmultiply 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-complex 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "num-traits 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "typenum 1.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1272,19 +1308,6 @@ dependencies = [
  "void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "nix"
-version = "0.10.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "bitflags 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "bytes 0.4.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "cfg-if 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
- "gcc 0.3.55 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
- "void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "nodrop"
 version = "0.1.13"
@@ -1304,9 +1327,9 @@ name = "num"
 version = "0.1.42"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "num-integer 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-integer 0.1.41 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-iter 0.1.39 (registry+https://github.com/rust-lang/crates.io-index)",
- "num-traits 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1314,8 +1337,8 @@ name = "num-bigint"
 version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "num-integer 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)",
- "num-traits 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-integer 0.1.41 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1324,16 +1347,16 @@ version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "autocfg 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "num-traits 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "num-integer"
-version = "0.1.42"
+version = "0.1.41"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "autocfg 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "num-traits 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "autocfg 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1342,26 +1365,26 @@ version = "0.1.39"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "autocfg 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "num-integer 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)",
- "num-traits 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-integer 0.1.41 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "num-rational"
-version = "0.2.3"
+version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "autocfg 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "num-integer 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)",
- "num-traits 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "autocfg 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-integer 0.1.41 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "num-traits"
-version = "0.2.11"
+version = "0.2.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "autocfg 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "autocfg 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1390,6 +1413,11 @@ dependencies = [
  "pkg-config 0.3.15 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "once_cell"
+version = "1.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "opaque-debug"
 version = "0.2.2"
@@ -1426,22 +1454,22 @@ dependencies = [
 
 [[package]]
 name = "paste"
-version = "0.1.6"
+version = "0.1.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "paste-impl 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "proc-macro-hack 0.5.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "paste-impl 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro-hack 0.5.15 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "paste-impl"
-version = "0.1.6"
+version = "0.1.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "proc-macro-hack 0.5.11 (registry+https://github.com/rust-lang/crates.io-index)",
- "proc-macro2 1.0.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro-hack 0.5.15 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2 1.0.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.14 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.19 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1468,9 +1496,27 @@ name = "percent-encoding"
 version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "pin-project"
+version = "0.4.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "pin-project-internal 0.4.15 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "pin-project-internal"
+version = "0.4.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "proc-macro2 1.0.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.19 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "pin-utils"
-version = "0.1.0-alpha.4"
+version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -1504,17 +1550,12 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "proc-macro-hack"
-version = "0.5.11"
+version = "0.5.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "proc-macro2 1.0.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.14 (registry+https://github.com/rust-lang/crates.io-index)",
-]
 
 [[package]]
 name = "proc-macro-nested"
-version = "0.1.3"
+version = "0.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -1533,14 +1574,6 @@ dependencies = [
  "unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
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-version = "1.0.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "protobuf"
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@@ -1584,14 +1617,6 @@ dependencies = [
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 ]
 
-[[package]]
-name = "quote"
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-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "proc-macro2 1.0.8 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "rand"
 version = "0.3.23"
@@ -2009,18 +2034,6 @@ name = "smallvec"
 version = "0.6.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "socket2"
-version = "0.2.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
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- "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "ws2_32-sys 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "socket2"
 version = "0.3.10"
@@ -2072,10 +2085,10 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "1.0.14"
+version = "1.0.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "proc-macro2 1.0.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2 1.0.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -2614,7 +2627,6 @@ dependencies = [
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 "checksum atty 0.2.13 (registry+https://github.com/rust-lang/crates.io-index)" = "1803c647a3ec87095e7ae7acfca019e98de5ec9a7d01343f611cf3152ed71a90"
 "checksum autocfg 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "22130e92352b948e7e82a49cdb0aa94f2211761117f29e052dd397c1ac33542b"
-"checksum autocfg 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "f8aac770f1885fd7e387acedd76065302551364496e46b3dd00860b2f8359b9d"
 "checksum backtrace 0.3.33 (registry+https://github.com/rust-lang/crates.io-index)" = "88fb679bc9af8fa639198790a77f52d345fe13656c08b43afa9424c206b731c6"
 "checksum backtrace-sys 0.1.31 (registry+https://github.com/rust-lang/crates.io-index)" = "82a830b4ef2d1124a711c71d263c5abdc710ef8e907bd508c88be475cebc422b"
 "checksum base64 0.10.1 (registry+https://github.com/rust-lang/crates.io-index)" = "0b25d992356d2eb0ed82172f5248873db5560c4721f564b13cb5193bda5e668e"
@@ -2634,6 +2646,7 @@ dependencies = [
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 "checksum c2-chacha 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7d64d04786e0f528460fc884753cf8dddcc466be308f6026f8e355c41a0e4101"
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 "checksum cc 1.0.47 (registry+https://github.com/rust-lang/crates.io-index)" = "aa87058dce70a3ff5621797f1506cb837edd02ac4c0ae642b4542dce802908b8"
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 "checksum cfg-if 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)" = "b486ce3ccf7ffd79fdeb678eac06a9e6c09fc88d33836340becb8fffe87c5e33"
@@ -2662,21 +2675,33 @@ dependencies = [
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+"checksum gstreamer-base-sys 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)" = "ba384f52174b3c586593fca32642680a9e67961fea9f4cd8419f678965023bed"
+"checksum gstreamer-sys 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)" = "1d18da01b97d0ab5896acd5151e4c155acefd0e6c03c3dd24dd133ba054053db"
 "checksum hex 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)" = "805026a5d0141ffc30abb3be3173848ad46a1b1664fe632428479619a3644d77"
 "checksum hmac 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)" = "5dcb5e64cda4c23119ab41ba960d1e170a774c8e4b9d9e6a9bc18aabf5e59695"
+"checksum hostname 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "dc5260e6c63877196b6fca5a7fb4eaff751134045ad3415716192baa36f5b9a0"
 "checksum httparse 1.3.4 (registry+https://github.com/rust-lang/crates.io-index)" = "cd179ae861f0c2e53da70d892f5f3029f9594be0c41dc5269cd371691b1dc2f9"
 "checksum humantime 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "3ca7e5f2e110db35f93b837c81797f3714500b81d517bf20c431b16d3ca4f114"
 "checksum hyper 0.11.27 (registry+https://github.com/rust-lang/crates.io-index)" = "34a590ca09d341e94cddf8e5af0bbccde205d5fbc2fa3c09dd67c7f85cea59d7"
@@ -2694,13 +2719,14 @@ dependencies = [
 "checksum libloading 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)" = "fd38073de8f7965d0c17d30546d4bb6da311ab428d1c7a3fc71dff7f9d4979b9"
 "checksum libloading 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)" = "f2b111a074963af1d37a139918ac6d49ad1d0d5e47f72fd55388619691a7d753"
 "checksum libm 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)" = "7fc7aa29613bd6a620df431842069224d8bc9011086b1db4c0e0cd47fa03ec9a"
-"checksum libmdns 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)" = "fa04490b2ddac499769cfd1e59e68326c6d52dced8aa262512ad3c82cefba374"
+"checksum libmdns 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)" = "cbf720e60dd4443fc6694f2791974061b38f9f332c2f30796fa7c3ac66f367f8"
 "checksum libpulse-sys 0.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "9bb11b06faf883500c1b625cf4453e6c7737e9df9c7ba01df3f84b22b083e4ac"
 "checksum librespot-tremor 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b155a7dc4e4d272e01c37a1b85c1ee1bee7f04980ad4a7784c1a6e0f2de5929b"
 "checksum linear-map 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "bfae20f6b19ad527b550c223fddc3077a547fc70cda94b9b566575423fd303ee"
 "checksum lock_api 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "62ebf1391f6acad60e5c8b43706dde4582df75c06698ab44511d15016bc2442c"
 "checksum log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)" = "e19e8d5c34a3e0e2223db8e060f9e8264aeeb5c5fc64a4ee9965c062211c024b"
 "checksum log 0.4.7 (registry+https://github.com/rust-lang/crates.io-index)" = "c275b6ad54070ac2d665eef9197db647b32239c9d244bfb6f041a766d00da5b3"
+"checksum match_cfg 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ffbee8634e0d45d258acb448e7eaab3fce7a0a467395d4d9f228e3c1f01fb2e4"
 "checksum matches 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)" = "7ffc5c5338469d4d3ea17d269fa8ea3512ad247247c30bd2df69e68309ed0a08"
 "checksum matrixmultiply 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "dcfed72d871629daa12b25af198f110e8095d7650f5f4c61c5bac28364604f9b"
 "checksum memchr 2.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "88579771288728879b57485cc7d6b07d648c9f0141eb955f8ab7f9d45394468e"
@@ -2715,34 +2741,38 @@ dependencies = [
 "checksum multimap 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "2eb04b9f127583ed176e163fb9ec6f3e793b87e21deedd5734a69386a18a0151"
 "checksum nalgebra 0.18.0 (registry+https://github.com/rust-lang/crates.io-index)" = "8e12856109b5cb8e2934b5e45e4624839416e1c6c1f7d286711a7a66b79db29d"
 "checksum net2 0.2.33 (registry+https://github.com/rust-lang/crates.io-index)" = "42550d9fb7b6684a6d404d9fa7250c2eb2646df731d1c06afc06dcee9e1bcf88"
-"checksum nix 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b7fd5681d13fda646462cfbd4e5f2051279a89a544d50eb98c365b507246839f"
 "checksum nix 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "a2c5afeb0198ec7be8569d666644b574345aad2e95a53baf3a532da3e0f3fb32"
 "checksum nodrop 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)" = "2f9667ddcc6cc8a43afc9b7917599d7216aa09c463919ea32c59ed6cac8bc945"
 "checksum nom 4.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "2ad2a91a8e869eeb30b9cb3119ae87773a8f4ae617f41b1eb9c154b2905f7bd6"
 "checksum num 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)" = "4703ad64153382334aa8db57c637364c322d3372e097840c72000dabdcf6156e"
 "checksum num-bigint 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "57450397855d951f1a41305e54851b1a7b8f5d2e349543a02a2effe25459f718"
 "checksum num-complex 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "fcb0cf31fb3ff77e6d2a6ebd6800df7fdcd106f2ad89113c9130bcd07f93dffc"
-"checksum num-integer 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)" = "3f6ea62e9d81a77cd3ee9a2a5b9b609447857f3d358704331e4ef39eb247fcba"
+"checksum num-integer 0.1.41 (registry+https://github.com/rust-lang/crates.io-index)" = "b85e541ef8255f6cf42bbfe4ef361305c6c135d10919ecc26126c4e5ae94bc09"
 "checksum num-iter 0.1.39 (registry+https://github.com/rust-lang/crates.io-index)" = "76bd5272412d173d6bf9afdf98db8612bbabc9a7a830b7bfc9c188911716132e"
-"checksum num-rational 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "da4dc79f9e6c81bef96148c8f6b8e72ad4541caa4a24373e900a36da07de03a3"
-"checksum num-traits 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)" = "c62be47e61d1842b9170f0fdeec8eba98e60e90e5446449a0545e5152acd7096"
+"checksum num-rational 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "f2885278d5fe2adc2f75ced642d52d879bffaceb5a2e0b1d4309ffdfb239b454"
+"checksum num-traits 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)" = "6ba9a427cfca2be13aa6f6403b0b7e7368fe982bfa16fccc450ce74c46cd9b32"
 "checksum num_cpus 1.10.1 (registry+https://github.com/rust-lang/crates.io-index)" = "bcef43580c035376c0705c42792c294b66974abbfd2789b511784023f71f3273"
 "checksum ogg 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "d79f1db9148be9d0e174bb3ac890f6030fcb1ed947267c5a91ee4c91b5a91e15"
 "checksum ogg-sys 0.0.9 (registry+https://github.com/rust-lang/crates.io-index)" = "a95b8c172e17df1a41bf8d666301d3b2c4efeb90d9d0415e2a4dc0668b35fdb2"
+"checksum once_cell 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "b1c601810575c99596d4afc46f78a678c80105117c379eb3650cf99b8a21ce5b"
 "checksum opaque-debug 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "93f5bb2e8e8dec81642920ccff6b61f1eb94fa3020c5a325c9851ff604152409"
 "checksum owning_ref 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "49a4b8ea2179e6a2e27411d3bca09ca6dd630821cf6894c6c7c8467a8ee7ef13"
 "checksum parking_lot 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)" = "ab41b4aed082705d1056416ae4468b6ea99d52599ecf3169b00088d43113e337"
 "checksum parking_lot_core 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "94c8c7923936b28d546dfd14d4472eaf34c99b14e1c973a32b3e6d4eb04298c9"
-"checksum paste 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)" = "423a519e1c6e828f1e73b720f9d9ed2fa643dce8a7737fb43235ce0b41eeaa49"
-"checksum paste-impl 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)" = "4214c9e912ef61bf42b81ba9a47e8aad1b2ffaf739ab162bf96d1e011f54e6c5"
+"checksum paste 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)" = "0a229b1c58c692edcaa5b9b0948084f130f55d2dcc15b02fcc5340b2b4521476"
+"checksum paste-impl 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)" = "2e0bf239e447e67ff6d16a8bb5e4d4bd2343acf5066061c0e8e06ac5ba8ca68c"
 "checksum pbkdf2 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "006c038a43a45995a9670da19e67600114740e8511d4333bf97a56e66a7542d9"
 "checksum peeking_take_while 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "19b17cddbe7ec3f8bc800887bab5e717348c95ea2ca0b1bf0837fb964dc67099"
 "checksum percent-encoding 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "31010dd2e1ac33d5b46a5b413495239882813e0369f8ed8a5e266f173602f831"
-"checksum pin-utils 0.1.0-alpha.4 (registry+https://github.com/rust-lang/crates.io-index)" = "5894c618ce612a3fa23881b152b608bafb8c56cfc22f434a3ba3120b40f7b587"
+"checksum pin-project 0.4.15 (registry+https://github.com/rust-lang/crates.io-index)" = "3c50dab4a05419117fe00216df4731e387ae616cd2a5f5dda1d8b02d863ac63d"
+"checksum pin-project-internal 0.4.15 (registry+https://github.com/rust-lang/crates.io-index)" = "6c27e5ac1d4c76777afd4d47b8fe9c602b44bcf6f999d34e300bba5560c9837b"
+"checksum pin-utils 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "8b870d8c151b6f2fb93e84a13146138f05d02ed11c7e7c54f8826aaaf7c9f184"
 "checksum pkg-config 0.3.15 (registry+https://github.com/rust-lang/crates.io-index)" = "a7c1d2cfa5a714db3b5f24f0915e74fcdf91d09d496ba61329705dda7774d2af"
 "checksum portaudio-rs 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "fc0e6b38f00fae9dde9a9832a2b54405988c6dcaf2870e6f9551546b447bbd7f"
 "checksum portaudio-sys 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "5194a4fa953b4ffd851c320ef6f0484cd7278cb7169ea9d6c433e49b23f7b7f5"
 "checksum ppv-lite86 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)" = "e3cbf9f658cdb5000fcf6f362b8ea2ba154b9f146a61c7a20d647034c6b6561b"
+"checksum proc-macro-hack 0.5.15 (registry+https://github.com/rust-lang/crates.io-index)" = "0d659fe7c6d27f25e9d80a1a094c223f5246f6a6596453e09d7229bf42750b63"
+"checksum proc-macro-nested 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)" = "8e946095f9d3ed29ec38de908c22f95d9ac008e424c7bcae54c75a79c527c694"
 "checksum proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)" = "cf3d2011ab5c909338f7887f4fc896d35932e29146c12c8d01da6b22a80ba759"
 "checksum proc-macro2 1.0.9 (registry+https://github.com/rust-lang/crates.io-index)" = "6c09721c6781493a2a492a96b5a5bf19b65917fe6728884e7c44dd0c60ca3435"
 "checksum protobuf 2.8.1 (registry+https://github.com/rust-lang/crates.io-index)" = "40361836defdd5871ff7e84096c6f6444af7fc157f8ef1789f54f147687caa20"
@@ -2803,7 +2833,6 @@ dependencies = [
 "checksum slab 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "c111b5bd5695e56cffe5129854aa230b39c93a305372fdbb2668ca2394eea9f8"
 "checksum smallvec 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "4c8cbcd6df1e117c2210e13ab5109635ad68a929fcbb8964dc965b76cb5ee013"
 "checksum smallvec 0.6.10 (registry+https://github.com/rust-lang/crates.io-index)" = "ab606a9c5e214920bb66c458cd7be8ef094f813f20fe77a54cc7dbfff220d4b7"
-"checksum socket2 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)" = "36b4896961171cd3317c7e9603d88f379f8c6e45342212235d356496680c68fd"
 "checksum socket2 0.3.10 (registry+https://github.com/rust-lang/crates.io-index)" = "df028e0e632c2a1823d920ad74895e7f9128e6438cbc4bc6fd1f180e644767b9"
 "checksum spin 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "44363f6f51401c34e7be73db0db371c04705d35efbe9f7d6082e03a921a32c55"
 "checksum stable_deref_trait 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "dba1a27d3efae4351c8051072d619e3ade2820635c3958d826bfea39d59b54c8"
@@ -2811,7 +2840,7 @@ dependencies = [
 "checksum stream-cipher 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "8861bc80f649f5b4c9bd38b696ae9af74499d479dbfb327f0607de6b326a36bc"
 "checksum subtle 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "2d67a5a62ba6e01cb2192ff309324cb4875d0c451d55fe2319433abe7a05a8ee"
 "checksum syn 0.15.42 (registry+https://github.com/rust-lang/crates.io-index)" = "eadc09306ca51a40555dd6fc2b415538e9e18bc9f870e47b1a524a79fe2dcf5e"
-"checksum syn 1.0.14 (registry+https://github.com/rust-lang/crates.io-index)" = "af6f3550d8dff9ef7dc34d384ac6f107e5d31c8f57d9f28e0081503f547ac8f5"
+"checksum syn 1.0.19 (registry+https://github.com/rust-lang/crates.io-index)" = "e8e5aa70697bb26ee62214ae3288465ecec0000f05182f039b477001f08f5ae7"
 "checksum synstructure 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)" = "02353edf96d6e4dc81aea2d8490a7e9db177bf8acb0e951c24940bf866cb313f"
 "checksum take 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b157868d8ac1f56b64604539990685fa7611d8fa9e5476cf0c02cf34d32917c5"
 "checksum tempfile 3.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "7a6e24d9338a0a5be79593e2fa15a648add6138caa803e2d5bc782c371732ca9"
diff --git a/playback/src/audio_backend/gstreamer.rs b/playback/src/audio_backend/gstreamer.rs
index c3e130f..d902cd3 100644
--- a/playback/src/audio_backend/gstreamer.rs
+++ b/playback/src/audio_backend/gstreamer.rs
@@ -20,10 +20,10 @@ impl Open for GstreamerSink {
             Some(x) => format!("{}{}", pipeline_str_preamble, x),
             None => format!("{}{}", pipeline_str_preamble, pipeline_str_rest),
         };
-        println!("Pipeline: {}", pipeline_str);
+        info!("Pipeline: {}", pipeline_str);
 
         gst::init().unwrap();
-        let pipelinee = gst::parse_launch(&*pipeline_str).expect("New Pipeline error");
+        let pipelinee = gst::parse_launch(&*pipeline_str).expect("Couldn't launch pipeline; likely a GStreamer issue or an error in the pipeline string you specified in the 'device' argument to librespot.");
         let pipeline = pipelinee
             .dynamic_cast::<gst::Pipeline>()
             .expect("Couldn't cast pipeline element at runtime!");
@@ -36,7 +36,7 @@ impl Open for GstreamerSink {
             .dynamic_cast::<gst_app::AppSrc>()
             .expect("Couldn't cast AppSrc element at runtime!");
         let bufferpool = gst::BufferPool::new();
-        let appsrc_caps = appsrc.get_caps().expect("get appsrc caps failed");
+        let appsrc_caps = appsrc.get_caps().expect("Couldn't get appsrc caps");
         let mut conf = bufferpool.get_config();
         conf.set_params(Some(&appsrc_caps), 8192, 0, 0);
         bufferpool
diff --git a/protocol/src/authentication.rs b/protocol/src/authentication.rs
index ca28299..0c10cba 100644
--- a/protocol/src/authentication.rs
+++ b/protocol/src/authentication.rs
@@ -1,4 +1,4 @@
-// This file is generated by rust-protobuf 2.8.1. Do not edit
+// This file is generated by rust-protobuf 2.8.2. Do not edit
 // @generated
 
 // https://github.com/Manishearth/rust-clippy/issues/702
@@ -24,7 +24,7 @@ use protobuf::ProtobufEnum as ProtobufEnum_imported_for_functions;
 
 /// Generated files are compatible only with the same version
 /// of protobuf runtime.
-const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_8_1;
+const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_8_2;
 
 #[derive(PartialEq,Clone,Default)]
 pub struct ClientResponseEncrypted {
diff --git a/protocol/src/keyexchange.rs b/protocol/src/keyexchange.rs
index f6cec4d..0fb5ae2 100644
--- a/protocol/src/keyexchange.rs
+++ b/protocol/src/keyexchange.rs
@@ -1,4 +1,4 @@
-// This file is generated by rust-protobuf 2.8.1. Do not edit
+// This file is generated by rust-protobuf 2.8.2. Do not edit
 // @generated
 
 // https://github.com/Manishearth/rust-clippy/issues/702
@@ -24,7 +24,7 @@ use protobuf::ProtobufEnum as ProtobufEnum_imported_for_functions;
 
 /// Generated files are compatible only with the same version
 /// of protobuf runtime.
-const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_8_1;
+const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_8_2;
 
 #[derive(PartialEq,Clone,Default)]
 pub struct ClientHello {
diff --git a/protocol/src/mercury.rs b/protocol/src/mercury.rs
index 3b371f7..9d6224d 100644
--- a/protocol/src/mercury.rs
+++ b/protocol/src/mercury.rs
@@ -1,4 +1,4 @@
-// This file is generated by rust-protobuf 2.8.1. Do not edit
+// This file is generated by rust-protobuf 2.8.2. Do not edit
 // @generated
 
 // https://github.com/Manishearth/rust-clippy/issues/702
@@ -24,7 +24,7 @@ use protobuf::ProtobufEnum as ProtobufEnum_imported_for_functions;
 
 /// Generated files are compatible only with the same version
 /// of protobuf runtime.
-const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_8_1;
+const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_8_2;
 
 #[derive(PartialEq,Clone,Default)]
 pub struct MercuryMultiGetRequest {
diff --git a/protocol/src/metadata.rs b/protocol/src/metadata.rs
index 571cd7d..3eadbd8 100644
--- a/protocol/src/metadata.rs
+++ b/protocol/src/metadata.rs
@@ -1,4 +1,4 @@
-// This file is generated by rust-protobuf 2.8.1. Do not edit
+// This file is generated by rust-protobuf 2.8.2. Do not edit
 // @generated
 
 // https://github.com/Manishearth/rust-clippy/issues/702
@@ -24,7 +24,7 @@ use protobuf::ProtobufEnum as ProtobufEnum_imported_for_functions;
 
 /// Generated files are compatible only with the same version
 /// of protobuf runtime.
-const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_8_1;
+const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_8_2;
 
 #[derive(PartialEq,Clone,Default)]
 pub struct TopTracks {
diff --git a/protocol/src/playlist4changes.rs b/protocol/src/playlist4changes.rs
index 3fefbdd..0144ed5 100644
--- a/protocol/src/playlist4changes.rs
+++ b/protocol/src/playlist4changes.rs
@@ -1,4 +1,4 @@
-// This file is generated by rust-protobuf 2.8.1. Do not edit
+// This file is generated by rust-protobuf 2.8.2. Do not edit
 // @generated
 
 // https://github.com/Manishearth/rust-clippy/issues/702
@@ -24,7 +24,7 @@ use protobuf::ProtobufEnum as ProtobufEnum_imported_for_functions;
 
 /// Generated files are compatible only with the same version
 /// of protobuf runtime.
-const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_8_1;
+const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_8_2;
 
 #[derive(PartialEq,Clone,Default)]
 pub struct ChangeInfo {
diff --git a/protocol/src/playlist4content.rs b/protocol/src/playlist4content.rs
index c92f687..3e9aca7 100644
--- a/protocol/src/playlist4content.rs
+++ b/protocol/src/playlist4content.rs
@@ -1,4 +1,4 @@
-// This file is generated by rust-protobuf 2.8.1. Do not edit
+// This file is generated by rust-protobuf 2.8.2. Do not edit
 // @generated
 
 // https://github.com/Manishearth/rust-clippy/issues/702
@@ -24,7 +24,7 @@ use protobuf::ProtobufEnum as ProtobufEnum_imported_for_functions;
 
 /// Generated files are compatible only with the same version
 /// of protobuf runtime.
-const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_8_1;
+const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_8_2;
 
 #[derive(PartialEq,Clone,Default)]
 pub struct Item {
diff --git a/protocol/src/playlist4issues.rs b/protocol/src/playlist4issues.rs
index 54aa162..8a11892 100644
--- a/protocol/src/playlist4issues.rs
+++ b/protocol/src/playlist4issues.rs
@@ -1,4 +1,4 @@
-// This file is generated by rust-protobuf 2.8.1. Do not edit
+// This file is generated by rust-protobuf 2.8.2. Do not edit
 // @generated
 
 // https://github.com/Manishearth/rust-clippy/issues/702
@@ -24,7 +24,7 @@ use protobuf::ProtobufEnum as ProtobufEnum_imported_for_functions;
 
 /// Generated files are compatible only with the same version
 /// of protobuf runtime.
-const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_8_1;
+const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_8_2;
 
 #[derive(PartialEq,Clone,Default)]
 pub struct ClientIssue {
diff --git a/protocol/src/playlist4meta.rs b/protocol/src/playlist4meta.rs
index 145105e..b25a837 100644
--- a/protocol/src/playlist4meta.rs
+++ b/protocol/src/playlist4meta.rs
@@ -1,4 +1,4 @@
-// This file is generated by rust-protobuf 2.8.1. Do not edit
+// This file is generated by rust-protobuf 2.8.2. Do not edit
 // @generated
 
 // https://github.com/Manishearth/rust-clippy/issues/702
@@ -24,7 +24,7 @@ use protobuf::ProtobufEnum as ProtobufEnum_imported_for_functions;
 
 /// Generated files are compatible only with the same version
 /// of protobuf runtime.
-const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_8_1;
+const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_8_2;
 
 #[derive(PartialEq,Clone,Default)]
 pub struct ListChecksum {
diff --git a/protocol/src/playlist4ops.rs b/protocol/src/playlist4ops.rs
index db92f76..e4f49c9 100644
--- a/protocol/src/playlist4ops.rs
+++ b/protocol/src/playlist4ops.rs
@@ -1,4 +1,4 @@
-// This file is generated by rust-protobuf 2.8.1. Do not edit
+// This file is generated by rust-protobuf 2.8.2. Do not edit
 // @generated
 
 // https://github.com/Manishearth/rust-clippy/issues/702
@@ -24,7 +24,7 @@ use protobuf::ProtobufEnum as ProtobufEnum_imported_for_functions;
 
 /// Generated files are compatible only with the same version
 /// of protobuf runtime.
-const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_8_1;
+const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_8_2;
 
 #[derive(PartialEq,Clone,Default)]
 pub struct Add {
diff --git a/protocol/src/pubsub.rs b/protocol/src/pubsub.rs
index a0daca4..4b271b0 100644
--- a/protocol/src/pubsub.rs
+++ b/protocol/src/pubsub.rs
@@ -1,4 +1,4 @@
-// This file is generated by rust-protobuf 2.8.1. Do not edit
+// This file is generated by rust-protobuf 2.8.2. Do not edit
 // @generated
 
 // https://github.com/Manishearth/rust-clippy/issues/702
@@ -24,7 +24,7 @@ use protobuf::ProtobufEnum as ProtobufEnum_imported_for_functions;
 
 /// Generated files are compatible only with the same version
 /// of protobuf runtime.
-const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_8_1;
+const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_8_2;
 
 #[derive(PartialEq,Clone,Default)]
 pub struct Subscription {
diff --git a/protocol/src/spirc.rs b/protocol/src/spirc.rs
index e68f811..aa43695 100644
--- a/protocol/src/spirc.rs
+++ b/protocol/src/spirc.rs
@@ -1,4 +1,4 @@
-// This file is generated by rust-protobuf 2.8.1. Do not edit
+// This file is generated by rust-protobuf 2.8.2. Do not edit
 // @generated
 
 // https://github.com/Manishearth/rust-clippy/issues/702
@@ -24,7 +24,7 @@ use protobuf::ProtobufEnum as ProtobufEnum_imported_for_functions;
 
 /// Generated files are compatible only with the same version
 /// of protobuf runtime.
-const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_8_1;
+const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_8_2;
 
 #[derive(PartialEq,Clone,Default)]
 pub struct Frame {

From 34b03301982848e85e783ae352fda22634c0243c Mon Sep 17 00:00:00 2001
From: Sean McNamara <smcnam@gmail.com>
Date: Mon, 11 May 2020 15:55:18 -0400
Subject: [PATCH 10/13] Add gstreamer dependencies to .travis.yml for the
 gstreamer-backend

---
 .travis.yml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/.travis.yml b/.travis.yml
index 8424be5..ec2d179 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -40,6 +40,8 @@ addons:
       - portaudio19-dev
       - libasound2-dev
       - libsdl2-dev
+      - gstreamer1.0-dev
+      - libgstreamer-plugins-base1.0-dev
 
 before_script:
     - mkdir -p ~/.cargo

From 82ec6320b9f631aaf8362becfaa1cdda1d1f75a5 Mon Sep 17 00:00:00 2001
From: Sean McNamara <smcnam@gmail.com>
Date: Mon, 11 May 2020 15:57:47 -0400
Subject: [PATCH 11/13] Revert protocol/src to 'dev' branch contents, as the
 gst-1.0 plugin doesn't change these autogenerated files

---
 protocol/src/authentication.rs   | 4 ++--
 protocol/src/keyexchange.rs      | 4 ++--
 protocol/src/mercury.rs          | 4 ++--
 protocol/src/metadata.rs         | 4 ++--
 protocol/src/playlist4changes.rs | 4 ++--
 protocol/src/playlist4content.rs | 4 ++--
 protocol/src/playlist4issues.rs  | 4 ++--
 protocol/src/playlist4meta.rs    | 4 ++--
 protocol/src/playlist4ops.rs     | 4 ++--
 protocol/src/pubsub.rs           | 4 ++--
 protocol/src/spirc.rs            | 4 ++--
 11 files changed, 22 insertions(+), 22 deletions(-)

diff --git a/protocol/src/authentication.rs b/protocol/src/authentication.rs
index 0c10cba..ca28299 100644
--- a/protocol/src/authentication.rs
+++ b/protocol/src/authentication.rs
@@ -1,4 +1,4 @@
-// This file is generated by rust-protobuf 2.8.2. Do not edit
+// This file is generated by rust-protobuf 2.8.1. Do not edit
 // @generated
 
 // https://github.com/Manishearth/rust-clippy/issues/702
@@ -24,7 +24,7 @@ use protobuf::ProtobufEnum as ProtobufEnum_imported_for_functions;
 
 /// Generated files are compatible only with the same version
 /// of protobuf runtime.
-const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_8_2;
+const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_8_1;
 
 #[derive(PartialEq,Clone,Default)]
 pub struct ClientResponseEncrypted {
diff --git a/protocol/src/keyexchange.rs b/protocol/src/keyexchange.rs
index 0fb5ae2..f6cec4d 100644
--- a/protocol/src/keyexchange.rs
+++ b/protocol/src/keyexchange.rs
@@ -1,4 +1,4 @@
-// This file is generated by rust-protobuf 2.8.2. Do not edit
+// This file is generated by rust-protobuf 2.8.1. Do not edit
 // @generated
 
 // https://github.com/Manishearth/rust-clippy/issues/702
@@ -24,7 +24,7 @@ use protobuf::ProtobufEnum as ProtobufEnum_imported_for_functions;
 
 /// Generated files are compatible only with the same version
 /// of protobuf runtime.
-const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_8_2;
+const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_8_1;
 
 #[derive(PartialEq,Clone,Default)]
 pub struct ClientHello {
diff --git a/protocol/src/mercury.rs b/protocol/src/mercury.rs
index 9d6224d..3b371f7 100644
--- a/protocol/src/mercury.rs
+++ b/protocol/src/mercury.rs
@@ -1,4 +1,4 @@
-// This file is generated by rust-protobuf 2.8.2. Do not edit
+// This file is generated by rust-protobuf 2.8.1. Do not edit
 // @generated
 
 // https://github.com/Manishearth/rust-clippy/issues/702
@@ -24,7 +24,7 @@ use protobuf::ProtobufEnum as ProtobufEnum_imported_for_functions;
 
 /// Generated files are compatible only with the same version
 /// of protobuf runtime.
-const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_8_2;
+const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_8_1;
 
 #[derive(PartialEq,Clone,Default)]
 pub struct MercuryMultiGetRequest {
diff --git a/protocol/src/metadata.rs b/protocol/src/metadata.rs
index 3eadbd8..571cd7d 100644
--- a/protocol/src/metadata.rs
+++ b/protocol/src/metadata.rs
@@ -1,4 +1,4 @@
-// This file is generated by rust-protobuf 2.8.2. Do not edit
+// This file is generated by rust-protobuf 2.8.1. Do not edit
 // @generated
 
 // https://github.com/Manishearth/rust-clippy/issues/702
@@ -24,7 +24,7 @@ use protobuf::ProtobufEnum as ProtobufEnum_imported_for_functions;
 
 /// Generated files are compatible only with the same version
 /// of protobuf runtime.
-const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_8_2;
+const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_8_1;
 
 #[derive(PartialEq,Clone,Default)]
 pub struct TopTracks {
diff --git a/protocol/src/playlist4changes.rs b/protocol/src/playlist4changes.rs
index 0144ed5..3fefbdd 100644
--- a/protocol/src/playlist4changes.rs
+++ b/protocol/src/playlist4changes.rs
@@ -1,4 +1,4 @@
-// This file is generated by rust-protobuf 2.8.2. Do not edit
+// This file is generated by rust-protobuf 2.8.1. Do not edit
 // @generated
 
 // https://github.com/Manishearth/rust-clippy/issues/702
@@ -24,7 +24,7 @@ use protobuf::ProtobufEnum as ProtobufEnum_imported_for_functions;
 
 /// Generated files are compatible only with the same version
 /// of protobuf runtime.
-const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_8_2;
+const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_8_1;
 
 #[derive(PartialEq,Clone,Default)]
 pub struct ChangeInfo {
diff --git a/protocol/src/playlist4content.rs b/protocol/src/playlist4content.rs
index 3e9aca7..c92f687 100644
--- a/protocol/src/playlist4content.rs
+++ b/protocol/src/playlist4content.rs
@@ -1,4 +1,4 @@
-// This file is generated by rust-protobuf 2.8.2. Do not edit
+// This file is generated by rust-protobuf 2.8.1. Do not edit
 // @generated
 
 // https://github.com/Manishearth/rust-clippy/issues/702
@@ -24,7 +24,7 @@ use protobuf::ProtobufEnum as ProtobufEnum_imported_for_functions;
 
 /// Generated files are compatible only with the same version
 /// of protobuf runtime.
-const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_8_2;
+const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_8_1;
 
 #[derive(PartialEq,Clone,Default)]
 pub struct Item {
diff --git a/protocol/src/playlist4issues.rs b/protocol/src/playlist4issues.rs
index 8a11892..54aa162 100644
--- a/protocol/src/playlist4issues.rs
+++ b/protocol/src/playlist4issues.rs
@@ -1,4 +1,4 @@
-// This file is generated by rust-protobuf 2.8.2. Do not edit
+// This file is generated by rust-protobuf 2.8.1. Do not edit
 // @generated
 
 // https://github.com/Manishearth/rust-clippy/issues/702
@@ -24,7 +24,7 @@ use protobuf::ProtobufEnum as ProtobufEnum_imported_for_functions;
 
 /// Generated files are compatible only with the same version
 /// of protobuf runtime.
-const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_8_2;
+const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_8_1;
 
 #[derive(PartialEq,Clone,Default)]
 pub struct ClientIssue {
diff --git a/protocol/src/playlist4meta.rs b/protocol/src/playlist4meta.rs
index b25a837..145105e 100644
--- a/protocol/src/playlist4meta.rs
+++ b/protocol/src/playlist4meta.rs
@@ -1,4 +1,4 @@
-// This file is generated by rust-protobuf 2.8.2. Do not edit
+// This file is generated by rust-protobuf 2.8.1. Do not edit
 // @generated
 
 // https://github.com/Manishearth/rust-clippy/issues/702
@@ -24,7 +24,7 @@ use protobuf::ProtobufEnum as ProtobufEnum_imported_for_functions;
 
 /// Generated files are compatible only with the same version
 /// of protobuf runtime.
-const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_8_2;
+const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_8_1;
 
 #[derive(PartialEq,Clone,Default)]
 pub struct ListChecksum {
diff --git a/protocol/src/playlist4ops.rs b/protocol/src/playlist4ops.rs
index e4f49c9..db92f76 100644
--- a/protocol/src/playlist4ops.rs
+++ b/protocol/src/playlist4ops.rs
@@ -1,4 +1,4 @@
-// This file is generated by rust-protobuf 2.8.2. Do not edit
+// This file is generated by rust-protobuf 2.8.1. Do not edit
 // @generated
 
 // https://github.com/Manishearth/rust-clippy/issues/702
@@ -24,7 +24,7 @@ use protobuf::ProtobufEnum as ProtobufEnum_imported_for_functions;
 
 /// Generated files are compatible only with the same version
 /// of protobuf runtime.
-const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_8_2;
+const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_8_1;
 
 #[derive(PartialEq,Clone,Default)]
 pub struct Add {
diff --git a/protocol/src/pubsub.rs b/protocol/src/pubsub.rs
index 4b271b0..a0daca4 100644
--- a/protocol/src/pubsub.rs
+++ b/protocol/src/pubsub.rs
@@ -1,4 +1,4 @@
-// This file is generated by rust-protobuf 2.8.2. Do not edit
+// This file is generated by rust-protobuf 2.8.1. Do not edit
 // @generated
 
 // https://github.com/Manishearth/rust-clippy/issues/702
@@ -24,7 +24,7 @@ use protobuf::ProtobufEnum as ProtobufEnum_imported_for_functions;
 
 /// Generated files are compatible only with the same version
 /// of protobuf runtime.
-const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_8_2;
+const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_8_1;
 
 #[derive(PartialEq,Clone,Default)]
 pub struct Subscription {
diff --git a/protocol/src/spirc.rs b/protocol/src/spirc.rs
index aa43695..e68f811 100644
--- a/protocol/src/spirc.rs
+++ b/protocol/src/spirc.rs
@@ -1,4 +1,4 @@
-// This file is generated by rust-protobuf 2.8.2. Do not edit
+// This file is generated by rust-protobuf 2.8.1. Do not edit
 // @generated
 
 // https://github.com/Manishearth/rust-clippy/issues/702
@@ -24,7 +24,7 @@ use protobuf::ProtobufEnum as ProtobufEnum_imported_for_functions;
 
 /// Generated files are compatible only with the same version
 /// of protobuf runtime.
-const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_8_2;
+const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_8_1;
 
 #[derive(PartialEq,Clone,Default)]
 pub struct Frame {

From ebf624155ab89b4af771b8120b10711a1c9f8eb8 Mon Sep 17 00:00:00 2001
From: Sean McNamara <smcnam@gmail.com>
Date: Mon, 11 May 2020 15:58:38 -0400
Subject: [PATCH 12/13] Pull Cargo.lock from dev branch (was I using master
 before? oops.)

---
 Cargo.lock | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index 8c13581..0b9d46d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -569,7 +569,7 @@ dependencies = [
  "futures-core 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures-macro 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures-task 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "pin-project 0.4.15 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pin-project 0.4.16 (registry+https://github.com/rust-lang/crates.io-index)",
  "pin-utils 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "proc-macro-hack 0.5.15 (registry+https://github.com/rust-lang/crates.io-index)",
  "proc-macro-nested 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1498,15 +1498,15 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "pin-project"
-version = "0.4.15"
+version = "0.4.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "pin-project-internal 0.4.15 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pin-project-internal 0.4.16 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "pin-project-internal"
-version = "0.4.15"
+version = "0.4.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 1.0.9 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2764,8 +2764,8 @@ dependencies = [
 "checksum pbkdf2 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "006c038a43a45995a9670da19e67600114740e8511d4333bf97a56e66a7542d9"
 "checksum peeking_take_while 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "19b17cddbe7ec3f8bc800887bab5e717348c95ea2ca0b1bf0837fb964dc67099"
 "checksum percent-encoding 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "31010dd2e1ac33d5b46a5b413495239882813e0369f8ed8a5e266f173602f831"
-"checksum pin-project 0.4.15 (registry+https://github.com/rust-lang/crates.io-index)" = "3c50dab4a05419117fe00216df4731e387ae616cd2a5f5dda1d8b02d863ac63d"
-"checksum pin-project-internal 0.4.15 (registry+https://github.com/rust-lang/crates.io-index)" = "6c27e5ac1d4c76777afd4d47b8fe9c602b44bcf6f999d34e300bba5560c9837b"
+"checksum pin-project 0.4.16 (registry+https://github.com/rust-lang/crates.io-index)" = "81d480cb4e89522ccda96d0eed9af94180b7a5f93fb28f66e1fd7d68431663d1"
+"checksum pin-project-internal 0.4.16 (registry+https://github.com/rust-lang/crates.io-index)" = "a82996f11efccb19b685b14b5df818de31c1edcee3daa256ab5775dd98e72feb"
 "checksum pin-utils 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "8b870d8c151b6f2fb93e84a13146138f05d02ed11c7e7c54f8826aaaf7c9f184"
 "checksum pkg-config 0.3.15 (registry+https://github.com/rust-lang/crates.io-index)" = "a7c1d2cfa5a714db3b5f24f0915e74fcdf91d09d496ba61329705dda7774d2af"
 "checksum portaudio-rs 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "fc0e6b38f00fae9dde9a9832a2b54405988c6dcaf2870e6f9551546b447bbd7f"

From a45695c9d3ec393dd04a8ada170a9d853b1ba902 Mon Sep 17 00:00:00 2001
From: Sasha Hilton <sashahilton00@gmail.com>
Date: Sat, 25 Jul 2020 02:52:37 +0100
Subject: [PATCH 13/13] Merge dev to current branch, fix Cargo.lock error

---
 Cargo.lock | 345 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 345 insertions(+)

diff --git a/Cargo.lock b/Cargo.lock
index dabd965..cf6da30 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -462,6 +462,19 @@ name = "futures"
 version = "0.1.29"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "futures-channel"
+version = "0.3.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "futures-core 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "futures-core"
+version = "0.3.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "futures-cpupool"
 version = "0.1.8"
@@ -471,6 +484,55 @@ dependencies = [
  "num_cpus 1.13.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "futures-executor"
+version = "0.3.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "futures-core 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-task 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-util 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "futures-macro"
+version = "0.3.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "proc-macro-hack 0.5.16 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2 1.0.19 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 1.0.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.35 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "futures-sink"
+version = "0.3.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "futures-task"
+version = "0.3.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "once_cell 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "futures-util"
+version = "0.3.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "futures-core 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-macro 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-task 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pin-project 0.4.22 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pin-utils 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro-hack 0.5.16 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro-nested 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
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@@ -522,11 +584,137 @@ dependencies = [
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+ "pkg-config 0.3.18 (registry+https://github.com/rust-lang/crates.io-index)",
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+ "gobject-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.73 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pkg-config 0.3.18 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
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@@ -874,6 +1062,9 @@ dependencies = [
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  "cpal 0.8.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
+ "glib 0.9.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gstreamer 0.15.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gstreamer-app 0.15.6 (registry+https://github.com/rust-lang/crates.io-index)",
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  "sdl2 0.32.2 (registry+https://github.com/rust-lang/crates.io-index)",
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+ "zerocopy 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
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 [[package]]
@@ -1036,6 +1228,11 @@ dependencies = [
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+
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@@ -1184,6 +1381,11 @@ dependencies = [
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+
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@@ -1213,6 +1415,23 @@ dependencies = [
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+
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@@ -1237,6 +1456,29 @@ name = "percent-encoding"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
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