diff options
Diffstat (limited to 'sys/osxaudio/gstosxcoreaudio.h')
| -rw-r--r-- | sys/osxaudio/gstosxcoreaudio.h | 681 |
1 files changed, 113 insertions, 568 deletions
diff --git a/sys/osxaudio/gstosxcoreaudio.h b/sys/osxaudio/gstosxcoreaudio.h index 8876115cf..71fcfa65c 100644 --- a/sys/osxaudio/gstosxcoreaudio.h +++ b/sys/osxaudio/gstosxcoreaudio.h @@ -2,29 +2,6 @@ * GStreamer * Copyright (C) 2012 Fluendo S.A. <support@fluendo.com> * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER - * DEALINGS IN THE SOFTWARE. - * - * Alternatively, the contents of this file may be used under the - * GNU Lesser General Public License Version 2.1 (the "LGPL"), in - * which case the following provisions apply instead of the ones - * mentioned above: - * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either @@ -40,567 +17,135 @@ * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. * - * The development of this code was made possible due to the involvement of - * Pioneers of the Inevitable, the creators of the Songbird Music player - * */ +#ifndef __GST_CORE_AUDIO_H__ +#define __GST_CORE_AUDIO_H__ + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif + +#include <gst/gst.h> +#ifdef HAVE_IOS + #include <CoreAudio/CoreAudioTypes.h> + #define AudioDeviceID gint + #define kAudioDeviceUnknown 0 +#else + #include <CoreAudio/CoreAudio.h> + #include <AudioToolbox/AudioToolbox.h> + #if MAC_OS_X_VERSION_MIN_REQUIRED <= MAC_OS_X_VERSION_10_5 + #include <CoreServices/CoreServices.h> + #define AudioComponentFindNext FindNextComponent + #define AudioComponentInstanceNew OpenAComponent + #define AudioComponentInstanceDispose CloseComponent + #define AudioComponent Component + #define AudioComponentDescription ComponentDescription + #endif +#endif +#include <AudioUnit/AudioUnit.h> +#include "gstosxaudioelement.h" + + +G_BEGIN_DECLS + +#define GST_TYPE_CORE_AUDIO \ + (gst_core_audio_get_type()) +#define GST_CORE_AUDIO(obj) \ + (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_CORE_AUDIO,GstCoreAudio)) +#define GST_CORE_AUDIO_CLASS(klass) \ + (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_CORE_AUDIO,GstCoreAudioClass)) +#define GST_CORE_AUDIO_GET_CLASS(obj) \ + (G_TYPE_INSTANCE_GET_CLASS((obj),GST_TYPE_CORE_AUDIO,GstCoreAudioClass)) +#define GST_IS_CORE_AUDIO(obj) \ + (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_CORE_AUDIO)) +#define GST_IS_CORE_AUDIO_CLASS(klass) \ + (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_CORE_AUDIO)) + +#define CORE_AUDIO_FORMAT_IS_SPDIF(f) ((f).mFormat.mFormatID == 'IAC3' || (f).mFormat.mFormatID == 'iac3' || (f).mFormat.mFormatID == kAudioFormat60958AC3 || (f).mFormat.mFormatID == kAudioFormatAC3) + #define CORE_AUDIO_FORMAT "FormatID: %" GST_FOURCC_FORMAT " rate: %f flags: 0x%x BytesPerPacket: %u FramesPerPacket: %u BytesPerFrame: %u ChannelsPerFrame: %u BitsPerChannel: %u" #define CORE_AUDIO_FORMAT_ARGS(f) GST_FOURCC_ARGS((f).mFormatID),(f).mSampleRate,(unsigned)(f).mFormatFlags,(unsigned)(f).mBytesPerPacket,(unsigned)(f).mFramesPerPacket,(unsigned)(f).mBytesPerFrame,(unsigned)(f).mChannelsPerFrame,(unsigned)(f).mBitsPerChannel -#define CORE_AUDIO_FORMAT_IS_SPDIF(f) ((f).mFormat.mFormatID == 'IAC3' || (f).mFormat.mFormatID == 'iac3' || (f).mFormat.mFormatID == kAudioFormat60958AC3 || (f).mFormat.mFormatID == kAudioFormatAC3) +typedef struct _GstCoreAudio GstCoreAudio; +typedef struct _GstCoreAudioClass GstCoreAudioClass; -static inline gboolean -_audio_system_set_runloop (CFRunLoopRef runLoop) -{ - OSStatus status = noErr; - - gboolean res = FALSE; - - AudioObjectPropertyAddress runloopAddress = { - kAudioHardwarePropertyRunLoop, - kAudioObjectPropertyScopeGlobal, - kAudioObjectPropertyElementMaster - }; - - status = AudioObjectSetPropertyData (kAudioObjectSystemObject, - &runloopAddress, 0, NULL, sizeof (CFRunLoopRef), &runLoop); - if (status == noErr) { - res = TRUE; - } else { - GST_ERROR ("failed to set runloop to %p: %" GST_FOURCC_FORMAT, - runLoop, GST_FOURCC_ARGS (status)); - } - - return res; -} - -static inline AudioDeviceID -_audio_system_get_default_output (void) +struct _GstCoreAudio { - OSStatus status = noErr; - UInt32 propertySize = sizeof (AudioDeviceID); - AudioDeviceID device_id = kAudioDeviceUnknown; - - AudioObjectPropertyAddress defaultDeviceAddress = { - kAudioHardwarePropertyDefaultOutputDevice, - kAudioDevicePropertyScopeOutput, - kAudioObjectPropertyElementMaster - }; - - status = AudioObjectGetPropertyData (kAudioObjectSystemObject, - &defaultDeviceAddress, 0, NULL, &propertySize, &device_id); - if (status != noErr) { - GST_ERROR ("failed getting default output device: %" - GST_FOURCC_FORMAT, GST_FOURCC_ARGS (status)); - } - - return device_id; -} - -static inline AudioDeviceID * -_audio_system_get_devices (gint * ndevices) -{ - OSStatus status = noErr; - UInt32 propertySize = 0; - AudioDeviceID *devices = NULL; - - AudioObjectPropertyAddress audioDevicesAddress = { - kAudioHardwarePropertyDevices, - kAudioDevicePropertyScopeOutput, - kAudioObjectPropertyElementMaster - }; - - status = AudioObjectGetPropertyDataSize (kAudioObjectSystemObject, - &audioDevicesAddress, 0, NULL, &propertySize); - if (status != noErr) { - GST_WARNING ("failed getting number of devices: %" - GST_FOURCC_FORMAT, GST_FOURCC_ARGS (status)); - return NULL; - } - - *ndevices = propertySize / sizeof (AudioDeviceID); - - devices = (AudioDeviceID *) g_malloc (propertySize); - if (devices) { - status = AudioObjectGetPropertyData (kAudioObjectSystemObject, - &audioDevicesAddress, 0, NULL, &propertySize, devices); - if (status != noErr) { - GST_WARNING ("failed getting the list of devices: %" - GST_FOURCC_FORMAT, GST_FOURCC_ARGS (status)); - g_free (devices); - *ndevices = 0; - return NULL; - } - } - return devices; -} - -static inline gboolean -_audio_device_is_alive (AudioDeviceID device_id) -{ - OSStatus status = noErr; - int alive = FALSE; - UInt32 propertySize = sizeof (alive); - - AudioObjectPropertyAddress audioDeviceAliveAddress = { - kAudioDevicePropertyDeviceIsAlive, - kAudioDevicePropertyScopeOutput, - kAudioObjectPropertyElementMaster - }; - - status = AudioObjectGetPropertyData (device_id, - &audioDeviceAliveAddress, 0, NULL, &propertySize, &alive); - if (status != noErr) { - alive = FALSE; - } - - return alive; -} - -static inline guint -_audio_device_get_latency (AudioDeviceID device_id) -{ - OSStatus status = noErr; - UInt32 latency = 0; - UInt32 propertySize = sizeof (latency); - - AudioObjectPropertyAddress audioDeviceLatencyAddress = { - kAudioDevicePropertyLatency, - kAudioDevicePropertyScopeOutput, - kAudioObjectPropertyElementMaster - }; - - status = AudioObjectGetPropertyData (device_id, - &audioDeviceLatencyAddress, 0, NULL, &propertySize, &latency); - if (status != noErr) { - GST_ERROR ("failed to get latency: %" GST_FOURCC_FORMAT, - GST_FOURCC_ARGS (status)); - latency = -1; - } - - return latency; -} - -static inline pid_t -_audio_device_get_hog (AudioDeviceID device_id) -{ - OSStatus status = noErr; + GObject object; + + GstObject *osxbuf; + GstOsxAudioElementInterface *element; + + gboolean is_src; + gboolean is_passthrough; + AudioDeviceID device_id; + AudioStreamBasicDescription stream_format; + gint stream_idx; + gboolean io_proc_active; + gboolean io_proc_needs_deactivation; + + /* For LPCM in/out */ + AudioUnit audiounit; + AudioBufferList *recBufferList; + +#ifndef HAVE_IOS + /* For SPDIF out */ pid_t hog_pid; - UInt32 propertySize = sizeof (hog_pid); - - AudioObjectPropertyAddress audioDeviceHogModeAddress = { - kAudioDevicePropertyHogMode, - kAudioDevicePropertyScopeOutput, - kAudioObjectPropertyElementMaster - }; - - status = AudioObjectGetPropertyData (device_id, - &audioDeviceHogModeAddress, 0, NULL, &propertySize, &hog_pid); - if (status != noErr) { - GST_ERROR ("failed to get hog: %" GST_FOURCC_FORMAT, - GST_FOURCC_ARGS (status)); - hog_pid = -1; - } - - return hog_pid; -} - -static inline gboolean -_audio_device_set_hog (AudioDeviceID device_id, pid_t hog_pid) -{ - OSStatus status = noErr; - UInt32 propertySize = sizeof (hog_pid); - gboolean res = FALSE; - - AudioObjectPropertyAddress audioDeviceHogModeAddress = { - kAudioDevicePropertyHogMode, - kAudioDevicePropertyScopeOutput, - kAudioObjectPropertyElementMaster - }; - - status = AudioObjectSetPropertyData (device_id, - &audioDeviceHogModeAddress, 0, NULL, propertySize, &hog_pid); - - if (status == noErr) { - res = TRUE; - } else { - GST_ERROR ("failed to set hog: %" GST_FOURCC_FORMAT, - GST_FOURCC_ARGS (status)); - } - - return res; -} - -static inline gboolean -_audio_device_set_mixing (AudioDeviceID device_id, gboolean enable_mix) -{ - OSStatus status = noErr; - UInt32 propertySize = 0, can_mix = enable_mix; - Boolean writable = FALSE; - gboolean res = FALSE; - - AudioObjectPropertyAddress audioDeviceSupportsMixingAddress = { - kAudioDevicePropertySupportsMixing, - kAudioObjectPropertyScopeGlobal, - kAudioObjectPropertyElementMaster - }; - - if (AudioObjectHasProperty (device_id, &audioDeviceSupportsMixingAddress)) { - /* Set mixable to false if we are allowed to */ - status = AudioObjectIsPropertySettable (device_id, - &audioDeviceSupportsMixingAddress, &writable); - if (status) { - GST_DEBUG ("AudioObjectIsPropertySettable: %" GST_FOURCC_FORMAT, - GST_FOURCC_ARGS (status)); - } - status = AudioObjectGetPropertyDataSize (device_id, - &audioDeviceSupportsMixingAddress, 0, NULL, &propertySize); - if (status) { - GST_DEBUG ("AudioObjectGetPropertyDataSize: %" GST_FOURCC_FORMAT, - GST_FOURCC_ARGS (status)); - } - status = AudioObjectGetPropertyData (device_id, - &audioDeviceSupportsMixingAddress, 0, NULL, &propertySize, &can_mix); - if (status) { - GST_DEBUG ("AudioObjectGetPropertyData: %" GST_FOURCC_FORMAT, - GST_FOURCC_ARGS (status)); - } - - if (status == noErr && writable) { - can_mix = enable_mix; - status = AudioObjectSetPropertyData (device_id, - &audioDeviceSupportsMixingAddress, 0, NULL, propertySize, &can_mix); - res = TRUE; - } - - if (status != noErr) { - GST_ERROR ("failed to set mixmode: %" GST_FOURCC_FORMAT, - GST_FOURCC_ARGS (status)); - } - } else { - GST_DEBUG ("property not found, mixing coudln't be changed"); - } - - return res; -} - -static inline gchar * -_audio_device_get_name (AudioDeviceID device_id) -{ - OSStatus status = noErr; - UInt32 propertySize = 0; - gchar *device_name = NULL; - - AudioObjectPropertyAddress deviceNameAddress = { - kAudioDevicePropertyDeviceName, - kAudioDevicePropertyScopeOutput, - kAudioObjectPropertyElementMaster - }; - - /* Get the length of the device name */ - status = AudioObjectGetPropertyDataSize (device_id, - &deviceNameAddress, 0, NULL, &propertySize); - if (status != noErr) { - goto beach; - } - - /* Get the name of the device */ - device_name = (gchar *) g_malloc (propertySize); - status = AudioObjectGetPropertyData (device_id, - &deviceNameAddress, 0, NULL, &propertySize, device_name); - if (status != noErr) { - g_free (device_name); - device_name = NULL; - } - -beach: - return device_name; -} - -static inline gboolean -_audio_device_has_output (AudioDeviceID device_id) -{ - OSStatus status = noErr; - UInt32 propertySize; - - AudioObjectPropertyAddress streamsAddress = { - kAudioDevicePropertyStreams, - kAudioDevicePropertyScopeOutput, - kAudioObjectPropertyElementMaster - }; - - status = AudioObjectGetPropertyDataSize (device_id, - &streamsAddress, 0, NULL, &propertySize); - if (status != noErr) { - return FALSE; - } - if (propertySize == 0) { - return FALSE; - } - - return TRUE; -} - -static inline AudioChannelLayout * -_audio_device_get_channel_layout (AudioDeviceID device_id) -{ - OSStatus status = noErr; - UInt32 propertySize = 0; - AudioChannelLayout *layout = NULL; - - AudioObjectPropertyAddress channelLayoutAddress = { - kAudioDevicePropertyPreferredChannelLayout, - kAudioDevicePropertyScopeOutput, - kAudioObjectPropertyElementMaster - }; - - /* Get the length of the default channel layout structure */ - status = AudioObjectGetPropertyDataSize (device_id, - &channelLayoutAddress, 0, NULL, &propertySize); - if (status != noErr) { - GST_ERROR ("failed to get prefered layout: %" GST_FOURCC_FORMAT, - GST_FOURCC_ARGS (status)); - goto beach; - } - - /* Get the default channel layout of the device */ - layout = (AudioChannelLayout *) g_malloc (propertySize); - status = AudioObjectGetPropertyData (device_id, - &channelLayoutAddress, 0, NULL, &propertySize, layout); - if (status != noErr) { - GST_ERROR ("failed to get prefered layout: %" GST_FOURCC_FORMAT, - GST_FOURCC_ARGS (status)); - goto failed; - } - - if (layout->mChannelLayoutTag == kAudioChannelLayoutTag_UseChannelBitmap) { - /* bitmap defined channellayout */ - status = - AudioFormatGetProperty (kAudioFormatProperty_ChannelLayoutForBitmap, - sizeof (UInt32), &layout->mChannelBitmap, &propertySize, layout); - if (status != noErr) { - GST_ERROR ("failed to get layout for bitmap: %" GST_FOURCC_FORMAT, - GST_FOURCC_ARGS (status)); - goto failed; - } - } else if (layout->mChannelLayoutTag != - kAudioChannelLayoutTag_UseChannelDescriptions) { - /* layouttags defined channellayout */ - status = AudioFormatGetProperty (kAudioFormatProperty_ChannelLayoutForTag, - sizeof(AudioChannelLayoutTag), &layout->mChannelLayoutTag, - &propertySize, layout); - if (status != noErr) { - GST_ERROR ("failed to get layout for tag: %" GST_FOURCC_FORMAT, - GST_FOURCC_ARGS (status)); - goto failed; - } - } - -beach: - return layout; - -failed: - g_free (layout); - return NULL; -} - -static inline AudioStreamID * -_audio_device_get_streams (AudioDeviceID device_id, gint * nstreams) -{ - OSStatus status = noErr; - UInt32 propertySize = 0; - AudioStreamID *streams = NULL; - - AudioObjectPropertyAddress streamsAddress = { - kAudioDevicePropertyStreams, - kAudioDevicePropertyScopeOutput, - kAudioObjectPropertyElementMaster - }; - - status = AudioObjectGetPropertyDataSize (device_id, - &streamsAddress, 0, NULL, &propertySize); - if (status != noErr) { - GST_WARNING ("failed getting number of streams: %" - GST_FOURCC_FORMAT, GST_FOURCC_ARGS (status)); - return NULL; - } - - *nstreams = propertySize / sizeof (AudioStreamID); - streams = (AudioStreamID *) g_malloc (propertySize); - - if (streams) { - status = AudioObjectGetPropertyData (device_id, - &streamsAddress, 0, NULL, &propertySize, streams); - if (status != noErr) { - GST_WARNING ("failed getting the list of streams: %" - GST_FOURCC_FORMAT, GST_FOURCC_ARGS (status)); - g_free (streams); - *nstreams = 0; - return NULL; - } - } - - return streams; -} - -static inline guint -_audio_stream_get_latency (AudioStreamID stream_id) -{ - OSStatus status = noErr; - UInt32 latency; - UInt32 propertySize = sizeof (latency); - - AudioObjectPropertyAddress latencyAddress = { - kAudioStreamPropertyLatency, - kAudioObjectPropertyScopeGlobal, - kAudioObjectPropertyElementMaster - }; - - status = AudioObjectGetPropertyData (stream_id, - &latencyAddress, 0, NULL, &propertySize, &latency); - if (status != noErr) { - GST_ERROR ("failed to get latency: %" GST_FOURCC_FORMAT, - GST_FOURCC_ARGS (status)); - latency = -1; - } - - return latency; -} - -static inline gboolean -_audio_stream_get_current_format (AudioStreamID stream_id, - AudioStreamBasicDescription * format) -{ - OSStatus status = noErr; - UInt32 propertySize = sizeof (AudioStreamBasicDescription); - - AudioObjectPropertyAddress formatAddress = { - kAudioStreamPropertyPhysicalFormat, - kAudioObjectPropertyScopeGlobal, - kAudioObjectPropertyElementMaster - }; - - status = AudioObjectGetPropertyData (stream_id, - &formatAddress, 0, NULL, &propertySize, format); - if (status != noErr) { - GST_ERROR ("failed to get current format: %" GST_FOURCC_FORMAT, - GST_FOURCC_ARGS (status)); - return FALSE; - } - - return TRUE; -} - -static inline gboolean -_audio_stream_set_current_format (AudioStreamID stream_id, - AudioStreamBasicDescription format) -{ - OSStatus status = noErr; - UInt32 propertySize = sizeof (AudioStreamBasicDescription); - - AudioObjectPropertyAddress formatAddress = { - kAudioStreamPropertyPhysicalFormat, - kAudioObjectPropertyScopeGlobal, - kAudioObjectPropertyElementMaster - }; - - status = AudioObjectSetPropertyData (stream_id, - &formatAddress, 0, NULL, propertySize, &format); - if (status != noErr) { - GST_ERROR ("failed to set current format: %" GST_FOURCC_FORMAT, - GST_FOURCC_ARGS (status)); - return FALSE; - } - - return TRUE; -} - -static inline AudioStreamRangedDescription * -_audio_stream_get_formats (AudioStreamID stream_id, gint * nformats) -{ - OSStatus status = noErr; - UInt32 propertySize = 0; - AudioStreamRangedDescription *formats = NULL; - - AudioObjectPropertyAddress formatsAddress = { - kAudioStreamPropertyAvailablePhysicalFormats, - kAudioObjectPropertyScopeGlobal, - kAudioObjectPropertyElementMaster - }; - - status = AudioObjectGetPropertyDataSize (stream_id, - &formatsAddress, 0, NULL, &propertySize); - if (status != noErr) { - GST_WARNING ("failed getting number of stream formats: %" - GST_FOURCC_FORMAT, GST_FOURCC_ARGS (status)); - return NULL; - } - - *nformats = propertySize / sizeof (AudioStreamRangedDescription); - - formats = (AudioStreamRangedDescription *) g_malloc (propertySize); - if (formats) { - status = AudioObjectGetPropertyData (stream_id, - &formatsAddress, 0, NULL, &propertySize, formats); - if (status != noErr) { - GST_WARNING ("failed getting the list of stream formats: %" - GST_FOURCC_FORMAT, GST_FOURCC_ARGS (status)); - g_free (formats); - *nformats = 0; - return NULL; - } - } - return formats; -} - -static inline gboolean -_audio_stream_is_spdif_avail (AudioStreamID stream_id) + gboolean disabled_mixing; + AudioStreamID stream_id; + gboolean revert_format; + AudioStreamBasicDescription original_format; + AudioDeviceIOProcID procID; +#endif +}; + +struct _GstCoreAudioClass { - AudioStreamRangedDescription *formats; - gint i, nformats = 0; - gboolean res = FALSE; + GObjectClass parent_class; +}; - formats = _audio_stream_get_formats (stream_id, &nformats); - GST_DEBUG ("found %d stream formats", nformats); +GType gst_core_audio_get_type (void); - if (formats) { - GST_DEBUG ("formats supported on stream ID: %u", - (unsigned) stream_id); +void gst_core_audio_init_debug (void); - for (i = 0; i < nformats; i++) { - GST_DEBUG (" " CORE_AUDIO_FORMAT, - CORE_AUDIO_FORMAT_ARGS (formats[i].mFormat)); +GstCoreAudio * gst_core_audio_new (GstObject *osxbuf); - if (CORE_AUDIO_FORMAT_IS_SPDIF (formats[i])) { - res = TRUE; - } - } - g_free (formats); - } +gboolean gst_core_audio_open (GstCoreAudio *core_audio); - return res; -} +gboolean gst_core_audio_close (GstCoreAudio *core_audio); -static inline gboolean -_audio_device_is_spdif_avail (AudioDeviceID device_id) -{ - AudioStreamID *streams = NULL; - gint i, nstreams = 0; - gboolean res = FALSE; +gboolean gst_core_audio_initialize (GstCoreAudio *core_audio, + AudioStreamBasicDescription format, + GstCaps *caps, + gboolean is_passthrough); + +void gst_core_audio_unitialize (GstCoreAudio *core_audio); + +gboolean gst_core_audio_start_processing (GstCoreAudio *core_audio); + +gboolean gst_core_audio_pause_processing (GstCoreAudio *core_audio); + +gboolean gst_core_audio_stop_processing (GstCoreAudio *core_audio); + +gboolean gst_core_audio_get_samples_and_latency (GstCoreAudio * core_audio, + gdouble rate, + guint *samples, + gdouble *latency); + +void gst_core_audio_set_volume (GstCoreAudio *core_audio, + gfloat volume); + +gboolean gst_core_audio_audio_device_is_spdif_avail (AudioDeviceID device_id); + + +gboolean gst_core_audio_select_device (AudioDeviceID *device_id); + +gboolean gst_core_audio_select_source_device (AudioDeviceID *device_id); - streams = _audio_device_get_streams (device_id, &nstreams); - GST_DEBUG ("found %d streams", nstreams); - if (streams) { - for (i = 0; i < nstreams; i++) { - if (_audio_stream_is_spdif_avail (streams[i])) { - res = TRUE; - } - } +AudioChannelLayout * gst_core_audio_audio_device_get_channel_layout (AudioDeviceID device_id); - g_free (streams); - } - return res; -} +G_END_DECLS +#endif /* __GST_CORE_AUDIO_H__ */ |