70 lines
2.5 KiB
C++
70 lines
2.5 KiB
C++
Patch from Stephen Hurd. PR208570. Allow ALSA aliases.
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When using ALSA with FreeBSD, the direct snd_device instances are not
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available, only plugin devices and "default". For programs which use
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QAudio, this means there are *no* devices enumerated using
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QAudio::availableDevices().
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The attached patch adds the aliases to the available device list.
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--- src/plugins/alsa/qalsaaudiodeviceinfo.cpp.orig 2017-11-08 14:04:46 UTC
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+++ src/plugins/alsa/qalsaaudiodeviceinfo.cpp
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@@ -353,6 +353,58 @@ QList<QByteArray> QAlsaAudioDeviceInfo::
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++n;
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}
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snd_device_name_free_hint(hints);
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+
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+#ifdef Q_OS_FREEBSD
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+ // Now find aliases...
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+ snd_config_iterator_t pos, next;
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+ snd_config_t *top, *node, *type;
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+ snd_pcm_t *pcm;
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+ snd_pcm_stream_t streamType;
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+ const char *idString;
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+ const char **ignoreId;
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+ static const char *ignore[] = {"hw", "plughw", "plug", "dsnoop", "tee",
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+ "file", "null", "shm", "cards", "rate_convert", NULL};
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+
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+ // Populate snd_config...
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+ if (snd_config == NULL)
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+ snd_config_update();
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+ if (snd_config != NULL) {
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+ switch (mode) {
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+ case QAudio::AudioInput:
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+ streamType = SND_PCM_STREAM_CAPTURE;
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+ break;
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+ case QAudio::AudioOutput:
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+ streamType = SND_PCM_STREAM_PLAYBACK;
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+ break;
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+ default:
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+ goto bad_mode;
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+ }
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+ // Find "pcm" nodes...
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+ if (snd_config_search(snd_config, "pcm", &top) >= 0) {
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+ for (pos = snd_config_iterator_first(top), next = snd_config_iterator_next(pos);
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+ pos != snd_config_iterator_end(top);
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+ pos = next, next = snd_config_iterator_next(pos)) {
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+ node = snd_config_iterator_entry(pos);
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+ if (snd_config_search(node, "type", &type) < 0)
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+ continue;
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+ snd_config_get_id(node, &idString);
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+ for (ignoreId = ignore; *ignoreId; ignoreId++) {
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+ if (strcmp(*ignoreId, idString) == 0)
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+ break;
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+ }
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+ if (*ignoreId)
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+ continue;
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+ // Ensure it's available...
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+ if (snd_pcm_open(&pcm, idString, streamType, 0))
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+ continue;
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+ snd_pcm_close(pcm);
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+ const QString deviceName = QLatin1String(idString);
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+ devices.append(deviceName.toLocal8Bit().constData());
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+ }
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+ }
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+ }
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+bad_mode:
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+#endif
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#else
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int idx = 0;
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char* name;
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