gboolean
gst_core_audio_bind_device (GstCoreAudio * core_audio)
{
OSStatus status;
/* Specify which device we're using. */
GST_DEBUG_OBJECT (core_audio->osxbuf, "Bind AudioUnit to device %d",
(int) core_audio->device_id);
status = AudioUnitSetProperty (core_audio->audiounit,
kAudioOutputUnitProperty_CurrentDevice, kAudioUnitScope_Global, 0,
&core_audio->device_id, sizeof (AudioDeviceID));
if (status) {
GST_ERROR_OBJECT (core_audio->osxbuf, "Failed binding to device: %"
GST_FOURCC_FORMAT, GST_FOURCC_ARGS (status));
goto audiounit_error;
}
return TRUE;
audiounit_error:
if (core_audio->recBufferList) {
buffer_list_free (core_audio->recBufferList);
core_audio->recBufferList = NULL;
}
return FALSE;
}
void
gst_core_audio_unitialize (GstCoreAudio * core_audio)
{
AudioUnitUninitialize (core_audio->audiounit);
if (core_audio->recBufferList) {
buffer_list_free (core_audio->recBufferList);
core_audio->recBufferList = NULL;
}
}
static struct pf_set *
pf_init_from_file(const char *fn)
{
struct buffer_list *bl = buffer_list_file(fn, PF_MAX_LINE_LEN);
if (bl)
{
struct pf_set *pfs = pf_init(bl, fn, true);
buffer_list_free(bl);
return pfs;
}
else
{
msg(D_PF_INFO|M_ERRNO, "PF: %s: cannot open", fn);
return NULL;
}
}
gboolean
gst_core_audio_initialize (GstCoreAudio * core_audio,
AudioStreamBasicDescription format, GstCaps * caps, gboolean is_passthrough)
{
guint32 frame_size;
OSStatus status;
GST_DEBUG_OBJECT (core_audio,
"Initializing: passthrough:%d caps:%" GST_PTR_FORMAT, is_passthrough,
caps);
if (!gst_core_audio_initialize_impl (core_audio, format, caps,
is_passthrough, &frame_size)) {
goto error;
}
if (core_audio->is_src) {
/* create AudioBufferList needed for recording */
core_audio->recBufferList =
buffer_list_alloc (format.mChannelsPerFrame,
frame_size * format.mBytesPerFrame);
}
/* Initialize the AudioUnit */
status = AudioUnitInitialize (core_audio->audiounit);
if (status) {
GST_ERROR_OBJECT (core_audio, "Failed to initialise AudioUnit: %d",
(int) status);
goto error;
}
return TRUE;
error:
if (core_audio->is_src && core_audio->recBufferList) {
buffer_list_free (core_audio->recBufferList);
core_audio->recBufferList = NULL;
}
return FALSE;
}
