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osxaudio: Bind audio device to audio unit early

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We want to bind the device during open so that subsequent format queries
on the audio unit are as specific as possible from that point onwards.

https://bugzilla.gnome.org/show_bug.cgi?id=740987
This commit is contained in:
Arun Raghavan 2014-12-01 19:29:57 +05:30
parent 2d0391c6e1
commit 48872dbc56
1 changed files with 16 additions and 4 deletions
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20
sys/osxaudio/gstosxcoreaudiohal.c
View file

@ -1007,6 +1007,8 @@ _io_proc_spdif_stop (GstCoreAudio * core_audio)
static gboolean
gst_core_audio_open_impl (GstCoreAudio * core_audio)
{
gboolean ret;
/* The following is needed to instruct HAL to create their own
* thread to handle the notifications. */
_audio_system_set_runloop (NULL);
@ -1021,8 +1023,21 @@ gst_core_audio_open_impl (GstCoreAudio * core_audio)
* we will do input with it.
* http://developer.apple.com/technotes/tn2002/tn2091.html
*/
return gst_core_audio_open_device (core_audio, kAudioUnitSubType_HALOutput,
ret = gst_core_audio_open_device (core_audio, kAudioUnitSubType_HALOutput,
"HALOutput");
if (!ret) {
GST_DEBUG ("Could not open device");
goto done;
}
ret = gst_core_audio_bind_device (core_audio);
if (!ret) {
GST_DEBUG ("Could not bind device");
goto done;
}
done:
return ret;
}
static gboolean
@ -1124,9 +1139,6 @@ gst_core_audio_initialize_impl (GstCoreAudio * core_audio,
format.mChannelsPerFrame, caps))
goto done;
if (!gst_core_audio_bind_device (core_audio))
goto done;
if (core_audio->is_src) {
propertySize = sizeof (*frame_size);
status = AudioUnitGetProperty (core_audio->audiounit, kAudioDevicePropertyBufferFrameSize, kAudioUnitScope_Global, 0, /* N/A for global */