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ao_coreaudio: revert to original device format on digital uninit 

This is not done automatically by CoreAudio. I am told that it would a PITA
to have to switch back the format manually on the device (especially if the
same device is used for lpcm output).
This commit is contained in:
Stefano Pigozzi 2013-07-15 08:18:50 +02:00
parent c11c744998
commit df39121206
1 changed files with 11 additions and 3 deletions
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14
audio/out/ao_coreaudio.c
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@ -70,6 +70,7 @@ struct priv_d {
// format we changed the stream to: for the digital case each application
// sets the stream format for a device to what it needs
AudioStreamBasicDescription stream_asbd;
AudioStreamBasicDescription original_asbd;
bool changed_mixing;
int stream_asbd_changed;
@ -493,6 +494,12 @@ static int init_digital(struct ao *ao, AudioStreamBasicDescription asbd)
bool digital = ca_stream_supports_digital(streams[i]);
if (digital) {
err = CA_GET(streams[i], kAudioStreamPropertyPhysicalFormat,
&d->original_asbd);
if (!CHECK_CA_WARN("could not get stream's physical format to "
"revert to, getting the next one"))
continue;
AudioStreamRangedDescription *formats;
size_t n_formats;
@ -500,10 +507,8 @@ static int init_digital(struct ao *ao, AudioStreamBasicDescription asbd)
kAudioStreamPropertyAvailablePhysicalFormats,
&formats, &n_formats);
if (err != noErr) {
ca_msg(MSGL_WARN, "could not get number of stream formats\n");
if (!CHECK_CA_WARN("could not get number of stream formats"))
continue; // try next one
}
int req_rate_format = -1;
int max_rate_format = -1;
@ -654,6 +659,9 @@ static void uninit(struct ao *ao, bool immed)
err = AudioDeviceDestroyIOProcID(p->device, d->render_cb);
CHECK_CA_WARN("failed to remove device render callback");
if (!ca_change_format(d->stream, d->original_asbd))
ca_msg(MSGL_WARN, "can't revert to original device format");
err = ca_enable_mixing(p->device, d->changed_mixing);
CHECK_CA_WARN("can't re-enable mixing");