mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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330 lines
8.9 KiB
C
330 lines
8.9 KiB
C
/*
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* GStreamer
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* Copyright (C) 2012-2013 Fluendo S.A. <support@fluendo.com>
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* Authors: Josep Torra Vallès <josep@fluendo.com>
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* Andoni Morales Alastruey <amorales@fluendo.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*
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*/
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#include "gstosxcoreaudio.h"
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#include "gstosxcoreaudiocommon.h"
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GST_DEBUG_CATEGORY_STATIC (osx_audio_debug);
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#define GST_CAT_DEFAULT osx_audio_debug
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G_DEFINE_TYPE (GstCoreAudio, gst_core_audio, G_TYPE_OBJECT);
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#ifdef HAVE_IOS
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#include "gstosxcoreaudioremoteio.c"
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#else
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#include "gstosxcoreaudiohal.c"
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#endif
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static void
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gst_core_audio_class_init (GstCoreAudioClass * klass)
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{
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}
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static void
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gst_core_audio_init (GstCoreAudio * core_audio)
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{
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core_audio->is_passthrough = FALSE;
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core_audio->device_id = kAudioDeviceUnknown;
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core_audio->is_src = FALSE;
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core_audio->audiounit = NULL;
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#ifndef HAVE_IOS
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core_audio->hog_pid = -1;
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core_audio->disabled_mixing = FALSE;
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#endif
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}
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/**************************
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* Public API *
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*************************/
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GstCoreAudio *
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gst_core_audio_new (GstObject * osxbuf)
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{
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GstCoreAudio *core_audio;
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core_audio = g_object_new (GST_TYPE_CORE_AUDIO, NULL);
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core_audio->osxbuf = osxbuf;
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return core_audio;
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}
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gboolean
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gst_core_audio_close (GstCoreAudio * core_audio)
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{
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AudioComponentInstanceDispose (core_audio->audiounit);
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core_audio->audiounit = NULL;
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return TRUE;
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}
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gboolean
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gst_core_audio_open (GstCoreAudio * core_audio)
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{
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return gst_core_audio_open_impl (core_audio);
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}
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gboolean
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gst_core_audio_start_processing (GstCoreAudio * core_audio)
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{
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return gst_core_audio_start_processing_impl (core_audio);
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}
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gboolean
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gst_core_audio_pause_processing (GstCoreAudio * core_audio)
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{
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return gst_core_audio_pause_processing_impl (core_audio);
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}
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gboolean
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gst_core_audio_stop_processing (GstCoreAudio * core_audio)
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{
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return gst_core_audio_stop_processing_impl (core_audio);
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}
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gboolean
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gst_core_audio_get_samples_and_latency (GstCoreAudio * core_audio,
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gdouble rate, guint * samples, gdouble * latency)
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{
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return gst_core_audio_get_samples_and_latency_impl (core_audio, rate,
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samples, latency);
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}
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gboolean
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gst_core_audio_initialize (GstCoreAudio * core_audio,
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AudioStreamBasicDescription format, GstCaps * caps, gboolean is_passthrough)
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{
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guint32 frame_size;
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OSStatus status;
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GST_DEBUG_OBJECT (core_audio,
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"Initializing: passthrough:%d caps:%" GST_PTR_FORMAT, is_passthrough,
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caps);
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if (!gst_core_audio_initialize_impl (core_audio, format, caps,
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is_passthrough, &frame_size)) {
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goto error;
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}
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if (core_audio->is_src) {
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/* create AudioBufferList needed for recording */
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core_audio->recBufferList =
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buffer_list_alloc (format.mChannelsPerFrame,
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frame_size * format.mBytesPerFrame);
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}
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/* Initialize the AudioUnit */
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status = AudioUnitInitialize (core_audio->audiounit);
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if (status) {
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GST_ERROR_OBJECT (core_audio, "Failed to initialise AudioUnit: %d",
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(int) status);
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goto error;
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}
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return TRUE;
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error:
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if (core_audio->is_src && core_audio->recBufferList) {
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buffer_list_free (core_audio->recBufferList);
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core_audio->recBufferList = NULL;
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}
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return FALSE;
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}
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void
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gst_core_audio_unitialize (GstCoreAudio * core_audio)
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{
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AudioUnitUninitialize (core_audio->audiounit);
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if (core_audio->recBufferList) {
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buffer_list_free (core_audio->recBufferList);
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core_audio->recBufferList = NULL;
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}
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}
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void
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gst_core_audio_set_volume (GstCoreAudio * core_audio, gfloat volume)
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{
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AudioUnitSetParameter (core_audio->audiounit, kHALOutputParam_Volume,
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kAudioUnitScope_Global, 0, (float) volume, 0);
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}
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gboolean
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gst_core_audio_select_device (GstCoreAudio * core_audio)
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{
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return gst_core_audio_select_device_impl (core_audio);
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}
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void
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gst_core_audio_init_debug (void)
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{
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GST_DEBUG_CATEGORY_INIT (osx_audio_debug, "osxaudio", 0,
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"OSX Audio Elements");
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}
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gboolean
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gst_core_audio_audio_device_is_spdif_avail (AudioDeviceID device_id)
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{
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return gst_core_audio_audio_device_is_spdif_avail_impl (device_id);
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}
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gboolean
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gst_core_audio_parse_channel_layout (AudioChannelLayout * layout,
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gint channels, guint64 * channel_mask, GstAudioChannelPosition * pos)
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{
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gint i;
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gboolean ret = TRUE;
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g_return_val_if_fail (channels <= GST_OSX_AUDIO_MAX_CHANNEL, FALSE);
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switch (channels) {
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case 0:
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pos[0] = GST_AUDIO_CHANNEL_POSITION_NONE;
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break;
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case 1:
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pos[0] = GST_AUDIO_CHANNEL_POSITION_MONO;
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break;
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case 2:
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pos[0] = GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT;
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pos[1] = GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT;
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*channel_mask |= GST_AUDIO_CHANNEL_POSITION_MASK (FRONT_LEFT);
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*channel_mask |= GST_AUDIO_CHANNEL_POSITION_MASK (FRONT_RIGHT);
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break;
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default:
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for (i = 0; i < channels; i++) {
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switch (layout->mChannelDescriptions[i].mChannelLabel) {
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case kAudioChannelLabel_Left:
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pos[i] = GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT;
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break;
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case kAudioChannelLabel_Right:
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pos[i] = GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT;
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break;
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case kAudioChannelLabel_Center:
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pos[i] = GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER;
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break;
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case kAudioChannelLabel_LFEScreen:
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pos[i] = GST_AUDIO_CHANNEL_POSITION_LFE1;
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break;
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case kAudioChannelLabel_LeftSurround:
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pos[i] = GST_AUDIO_CHANNEL_POSITION_REAR_LEFT;
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break;
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case kAudioChannelLabel_RightSurround:
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pos[i] = GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT;
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break;
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case kAudioChannelLabel_RearSurroundLeft:
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pos[i] = GST_AUDIO_CHANNEL_POSITION_SIDE_LEFT;
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break;
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case kAudioChannelLabel_RearSurroundRight:
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pos[i] = GST_AUDIO_CHANNEL_POSITION_SIDE_RIGHT;
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break;
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case kAudioChannelLabel_CenterSurround:
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pos[i] = GST_AUDIO_CHANNEL_POSITION_REAR_CENTER;
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break;
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default:
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GST_WARNING ("unrecognized channel: %d",
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(int) layout->mChannelDescriptions[i].mChannelLabel);
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*channel_mask = 0;
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ret = FALSE;
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break;
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}
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}
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}
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return ret;
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}
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GstCaps *
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gst_core_audio_asbd_to_caps (AudioStreamBasicDescription * asbd,
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AudioChannelLayout * layout)
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{
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GstAudioInfo info;
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GstAudioFormat format = GST_AUDIO_FORMAT_UNKNOWN;
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GstAudioChannelPosition pos[64] = { GST_AUDIO_CHANNEL_POSITION_INVALID, };
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gint rate, channels, bps, endianness;
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guint64 channel_mask;
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gboolean sign, interleaved;
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if (asbd->mFormatID != kAudioFormatLinearPCM) {
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GST_WARNING ("Only linear PCM is supported");
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goto error;
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}
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if (!(asbd->mFormatFlags & kAudioFormatFlagIsPacked)) {
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GST_WARNING ("Only packed formats supported");
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goto error;
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}
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if (asbd->mFormatFlags & kLinearPCMFormatFlagsSampleFractionMask) {
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GST_WARNING ("Fixed point audio is unsupported");
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goto error;
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}
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rate = asbd->mSampleRate;
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if (rate == kAudioStreamAnyRate)
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rate = GST_AUDIO_DEF_RATE;
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channels = asbd->mChannelsPerFrame;
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if (channels == 0) {
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/* The documentation says this should not happen! */
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channels = 1;
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}
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bps = asbd->mBitsPerChannel;
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endianness = asbd->mFormatFlags & kAudioFormatFlagIsBigEndian ?
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G_BIG_ENDIAN : G_LITTLE_ENDIAN;
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sign = asbd->mFormatID & kAudioFormatFlagIsSignedInteger ? TRUE : FALSE;
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interleaved = asbd->mFormatFlags & kAudioFormatFlagIsNonInterleaved ?
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TRUE : FALSE;
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if (asbd->mFormatFlags & kAudioFormatFlagIsFloat) {
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if (bps == 32) {
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if (endianness == G_LITTLE_ENDIAN)
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format = GST_AUDIO_FORMAT_F32LE;
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else
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format = GST_AUDIO_FORMAT_F32BE;
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} else if (bps == 64) {
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if (endianness == G_LITTLE_ENDIAN)
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format = GST_AUDIO_FORMAT_F64LE;
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else
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format = GST_AUDIO_FORMAT_F64BE;
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}
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} else {
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format = gst_audio_format_build_integer (sign, endianness, bps, bps);
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}
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if (format == GST_AUDIO_FORMAT_UNKNOWN) {
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GST_WARNING ("Unsupported sample format");
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goto error;
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}
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if (!gst_core_audio_parse_channel_layout (layout, channels, &channel_mask,
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pos)) {
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GST_WARNING ("Failed to parse channel layout");
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goto error;
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}
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gst_audio_info_set_format (&info, format, rate, channels, pos);
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return gst_audio_info_to_caps (&info);
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error:
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return NULL;
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}
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