Ejemplos de gst_core_audio_open_impl en C++ (Cpp)

Ejemplo n.º 1

Archivo: gstosxcoreaudio.c Proyecto: jcaden/gst-plugins-good

gboolean
gst_core_audio_open (GstCoreAudio * core_audio)
{

  if (!gst_core_audio_open_impl (core_audio))
    return FALSE;

  if (core_audio->is_src) {
    AudioStreamBasicDescription asbd_in;
    UInt32 propertySize;
    OSStatus status;

    GstOsxAudioSrc *src =
        GST_OSX_AUDIO_SRC (GST_OBJECT_PARENT (core_audio->osxbuf));

    propertySize = sizeof (asbd_in);
    status = AudioUnitGetProperty (core_audio->audiounit,
        kAudioUnitProperty_StreamFormat,
        kAudioUnitScope_Input, 1, &asbd_in, &propertySize);

    if (status) {
      AudioComponentInstanceDispose (core_audio->audiounit);
      core_audio->audiounit = NULL;
      GST_WARNING_OBJECT (core_audio,
          "Unable to obtain device properties: %d", (int) status);
      return FALSE;
    } else {
      src->deviceChannels = asbd_in.mChannelsPerFrame;
    }
  }

  return TRUE;
}

Ejemplo n.º 2

Archivo: gstosxcoreaudio.c Proyecto: thiblahute/gst-plugins-good

gboolean
gst_core_audio_open (GstCoreAudio * core_audio)
{
  OSStatus status;

  /* core_audio->osxbuf is already locked at this point */
  core_audio->cached_caps_valid = FALSE;
  gst_caps_replace (&core_audio->cached_caps, NULL);

  if (!gst_core_audio_open_impl (core_audio))
    return FALSE;

  /* Add property listener */
  status = AudioUnitAddPropertyListener (core_audio->audiounit,
      kAudioUnitProperty_AudioChannelLayout, _audio_unit_property_listener,
      core_audio);
  if (status != noErr) {
    GST_ERROR_OBJECT (core_audio, "Failed to add audio channel layout property "
        "listener for AudioUnit: %d", (int) status);
  }
  status = AudioUnitAddPropertyListener (core_audio->audiounit,
      kAudioUnitProperty_StreamFormat, _audio_unit_property_listener,
      core_audio);
  if (status != noErr) {
    GST_ERROR_OBJECT (core_audio, "Failed to add stream format property "
        "listener for AudioUnit: %d", (int) status);
  }

  /* Initialize the AudioUnit. We keep the audio unit initialized early so that
   * we can probe the underlying device. */
  status = AudioUnitInitialize (core_audio->audiounit);
  if (status) {
    GST_ERROR_OBJECT (core_audio, "Failed to initialize AudioUnit: %d",
        (int) status);
    return FALSE;
  }

  return TRUE;
}