* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
-/*****************************************************************************
- * Preamble
- *****************************************************************************/
+#pragma mark includes
#ifdef HAVE_CONFIG_H
# import "config.h"
#import "TPCircularBuffer.h"
+#pragma mark -
+#pragma mark private declarations
+
#ifndef verify_noerr
# define verify_noerr(a) assert((a) == noErr)
#endif
#define AOUT_VOLUME_DEFAULT 256
#define AOUT_VOLUME_MAX 512
+#define VOLUME_TEXT N_("Audio volume")
+#define VOLUME_LONGTEXT VOLUME_TEXT
/*****************************************************************************
* aout_sys_t: private audio output method descriptor
char *name;
};
-/*****************************************************************************
- * Local prototypes.
- *****************************************************************************/
+
+#pragma mark -
+#pragma mark local prototypes & module descriptor
+
static int Open (vlc_object_t *);
-static int OpenAnalog (audio_output_t *, audio_sample_format_t *);
-static int OpenSPDIF (audio_output_t *, audio_sample_format_t *);
static void Close (vlc_object_t *);
-
-static void Play (audio_output_t *, block_t *);
-static void Flush (audio_output_t *, bool);
-static void Pause (audio_output_t *, bool, mtime_t);
-static int TimeGet (audio_output_t *, mtime_t *);
+static int Start (audio_output_t *, audio_sample_format_t *);
+static int StartAnalog (audio_output_t *, audio_sample_format_t *);
+static int StartSPDIF (audio_output_t *, audio_sample_format_t *);
+static void Stop (audio_output_t *);
static int DeviceList (audio_output_t *p_aout, char ***namesp, char ***descsp);
static void RebuildDeviceList (audio_output_t *);
static int SwitchAudioDevice (audio_output_t *p_aout, const char *name);
+static int VolumeSet (audio_output_t *, float);
+static int MuteSet (audio_output_t *, bool);
-static int AudioDeviceHasOutput (AudioDeviceID);
-static int AudioDeviceSupportsDigital(audio_output_t *, AudioDeviceID);
-static int AudioStreamSupportsDigital(audio_output_t *, AudioStreamID);
-static int AudioStreamChangeFormat (audio_output_t *, AudioStreamID, AudioStreamBasicDescription);
-
-static OSStatus RenderCallbackAnalog (vlc_object_t *, AudioUnitRenderActionFlags *, const AudioTimeStamp *, UInt32 , UInt32, AudioBufferList *);
+static void Play (audio_output_t *, block_t *);
+static void Pause (audio_output_t *, bool, mtime_t);
+static void Flush (audio_output_t *, bool);
+static int TimeGet (audio_output_t *, mtime_t *);
+static OSStatus RenderCallbackAnalog (vlc_object_t *, AudioUnitRenderActionFlags *, const AudioTimeStamp *,
+ UInt32 , UInt32, AudioBufferList *);
static OSStatus RenderCallbackSPDIF (AudioDeviceID, const AudioTimeStamp *, const void *, const AudioTimeStamp *,
- AudioBufferList *, const AudioTimeStamp *, void *);
+ AudioBufferList *, const AudioTimeStamp *, void *);
+
static OSStatus HardwareListener (AudioObjectID, UInt32, const AudioObjectPropertyAddress *, void *);
static OSStatus StreamListener (AudioObjectID, UInt32, const AudioObjectPropertyAddress *, void *);
-static int VolumeSet (audio_output_t *, float);
-static int MuteSet (audio_output_t *, bool);
-
+static int AudioDeviceHasOutput (AudioDeviceID);
+static int AudioDeviceSupportsDigital(audio_output_t *, AudioDeviceID);
+static int AudioStreamSupportsDigital(audio_output_t *, AudioStreamID);
+static int AudioStreamChangeFormat (audio_output_t *, AudioStreamID, AudioStreamBasicDescription);
-/*****************************************************************************
- * Module descriptor
- *****************************************************************************/
-#define VOLUME_TEXT N_("Audio volume")
-#define VOLUME_LONGTEXT VOLUME_TEXT
vlc_module_begin ()
set_shortname("auhal")
add_obsolete_integer("macosx-audio-device") /* since 2.1.0 */
vlc_module_end ()
-/*****************************************************************************
- * Open: open macosx audio output
- *****************************************************************************/
+#pragma mark -
+#pragma mark initialization
+
+static int Open(vlc_object_t *obj)
+{
+ audio_output_t *aout = (audio_output_t *)obj;
+ aout_sys_t *sys = malloc(sizeof (*sys));
+
+ if (unlikely(sys == NULL))
+ return VLC_ENOMEM;
+
+ vlc_mutex_init(&sys->lock);
+
+ aout->sys = sys;
+ aout->start = Start;
+ aout->stop = Stop;
+ aout->volume_set = VolumeSet;
+ aout->mute_set = MuteSet;
+ aout->device_enum = DeviceList;
+ aout->sys->devices = NULL;
+ aout->device_select = SwitchAudioDevice;
+
+ RebuildDeviceList(aout);
+
+ /* remember the volume */
+ aout_VolumeReport(aout, var_InheritInteger(aout, "auhal-volume") / (float)AOUT_VOLUME_DEFAULT);
+ MuteSet(aout, var_InheritBool(aout, "mute"));
+
+ return VLC_SUCCESS;
+}
+
+static void Close(vlc_object_t *obj)
+{
+ audio_output_t *aout = (audio_output_t *)obj;
+ aout_sys_t *sys = aout->sys;
+
+ for (struct audio_device_t * device = sys->devices, *next; device != NULL; device = next) {
+ next = device->next;
+ free(device->name);
+ free(device);
+ }
+
+ vlc_mutex_destroy(&sys->lock);
+
+ free(sys);
+}
+
static int Start(audio_output_t *p_aout, audio_sample_format_t *restrict fmt)
{
OSStatus err = noErr;
/* Check for Digital mode or Analog output mode */
if (AOUT_FMT_SPDIF (fmt) && p_sys->b_selected_dev_is_digital) {
- if (OpenSPDIF (p_aout, fmt)) {
+ if (StartSPDIF (p_aout, fmt)) {
msg_Dbg(p_aout, "digital output successfully opened");
b_success = true;
}
} else {
- if (OpenAnalog(p_aout, fmt)) {
+ if (StartAnalog(p_aout, fmt)) {
msg_Dbg(p_aout, "analog output successfully opened");
b_success = true;
}
error:
/* If we reach this, this aout has failed */
- msg_Err(p_aout, "opening the auhal output failed");
+ msg_Err(p_aout, "opening auhal output failed");
return VLC_EGENERIC;
}
-/*****************************************************************************
- * Open: open and setup a HAL AudioUnit to do analog (multichannel) audio output
- *****************************************************************************/
-static int OpenAnalog(audio_output_t *p_aout, audio_sample_format_t *fmt)
+/*
+ * StartAnalog: open and setup a HAL AudioUnit to do PCM audio output
+ */
+static int StartAnalog(audio_output_t *p_aout, audio_sample_format_t *fmt)
{
struct aout_sys_t *p_sys = p_aout->sys;
OSStatus err = noErr;
return true;
}
-/*****************************************************************************
- * Setup a encoded digital stream (SPDIF)
- *****************************************************************************/
-static int OpenSPDIF (audio_output_t * p_aout, audio_sample_format_t *fmt)
+/*
+ * StartSPDIF: Setup an encoded digital stream (SPDIF) output
+ */
+static int StartSPDIF (audio_output_t * p_aout, audio_sample_format_t *fmt)
{
struct aout_sys_t *p_sys = p_aout->sys;
OSStatus err = noErr;
/* Retrieve all the stream formats supported by each output stream */
err = AudioObjectGetPropertyDataSize(p_streams[i], &physicalFormatsAddress, 0, NULL, &i_param_size);
if (err != noErr) {
- msg_Err(p_aout, "OpenSPDIF: could not get number of streamformats: [%s] (%i)", (char *)&err, (int32_t)err);
+ msg_Err(p_aout, "could not get number of streamformats: [%s] (%i)", (char *)&err, (int32_t)err);
continue;
}
return true;
}
-
-/*****************************************************************************
- * Close: Close HAL AudioUnit
- *****************************************************************************/
static void Stop(audio_output_t *p_aout)
{
struct aout_sys_t *p_sys = p_aout->sys;
TPCircularBufferCleanup(&p_sys->circular_buffer);
}
+#pragma mark -
+#pragma mark core interaction
+
static int DeviceList(audio_output_t *p_aout, char ***namesp, char ***descsp)
{
struct aout_sys_t *p_sys = p_aout->sys;
return 0;
}
-/*****************************************************************************
- * AudioDeviceHasOutput: Checks if the Device actually provides any outputs at all
- *****************************************************************************/
-static int AudioDeviceHasOutput(AudioDeviceID i_dev_id)
-{
- UInt32 dataSize = 0;
- OSStatus status;
-
- AudioObjectPropertyAddress streamsAddress = { kAudioDevicePropertyStreams, kAudioDevicePropertyScopeOutput, kAudioObjectPropertyElementMaster };
- status = AudioObjectGetPropertyDataSize(i_dev_id, &streamsAddress, 0, NULL, &dataSize);
-
- if (dataSize == 0 || status != noErr)
- return FALSE;
-
- return TRUE;
-}
-
-/*****************************************************************************
- * AudioDeviceSupportsDigital: Check i_dev_id for digital stream support.
- *****************************************************************************/
-static int AudioDeviceSupportsDigital(audio_output_t *p_aout, AudioDeviceID i_dev_id)
+static int VolumeSet(audio_output_t * p_aout, float volume)
{
- OSStatus err = noErr;
- UInt32 i_param_size = 0;
- AudioStreamID *p_streams = NULL;
- int i_streams = 0;
- bool b_return = false;
-
- /* Retrieve all the output streams */
- AudioObjectPropertyAddress streamsAddress = { kAudioDevicePropertyStreams, kAudioDevicePropertyScopeOutput, kAudioObjectPropertyElementMaster };
- err = AudioObjectGetPropertyDataSize(i_dev_id, &streamsAddress, 0, NULL, &i_param_size);
- if (err != noErr) {
- msg_Err(p_aout, "could not get number of streams: [%s] (%i)", (char *)&err, (int32_t)err);
- return false;
- }
+ struct aout_sys_t *p_sys = p_aout->sys;
+ OSStatus ostatus;
- i_streams = i_param_size / sizeof(AudioStreamID);
- p_streams = (AudioStreamID *)malloc(i_param_size);
- if (p_streams == NULL)
- return VLC_ENOMEM;
+ aout_VolumeReport(p_aout, volume);
- err = AudioObjectGetPropertyData(i_dev_id, &streamsAddress, 0, NULL, &i_param_size, p_streams);
- if (err != noErr) {
- msg_Err(p_aout, "could not get list of streams: [%s]", (char *)&err);
- return false;
- }
+ /* Set volume for output unit */
+ ostatus = AudioUnitSetParameter(p_sys->au_unit,
+ kHALOutputParam_Volume,
+ kAudioUnitScope_Global,
+ 0,
+ volume * volume * volume,
+ 0);
- for (int i = 0; i < i_streams; i++) {
- if (AudioStreamSupportsDigital(p_aout, p_streams[i]))
- b_return = true;
- }
+ if (var_InheritBool(p_aout, "volume-save"))
+ config_PutInt(p_aout, "auhal-volume", lroundf(volume * AOUT_VOLUME_DEFAULT));
- free(p_streams);
- return b_return;
+ return ostatus;
}
-/*****************************************************************************
- * AudioStreamSupportsDigital: Check i_stream_id for digital stream support.
- *****************************************************************************/
-static int AudioStreamSupportsDigital(audio_output_t *p_aout, AudioStreamID i_stream_id)
+static int MuteSet(audio_output_t * p_aout, bool mute)
{
- OSStatus err = noErr;
- UInt32 i_param_size = 0;
- AudioStreamRangedDescription *p_format_list = NULL;
- int i_formats = 0;
- bool b_return = false;
-
- /* Retrieve all the stream formats supported by each output stream */
- AudioObjectPropertyAddress physicalFormatsAddress = { kAudioStreamPropertyAvailablePhysicalFormats, kAudioObjectPropertyScopeGlobal, 0 };
- err = AudioObjectGetPropertyDataSize(i_stream_id, &physicalFormatsAddress, 0, NULL, &i_param_size);
- if (err != noErr) {
- msg_Err(p_aout, "could not get number of streamformats: [%s] (%i)", (char *)&err, (int32_t)err);
- return false;
- }
-
- i_formats = i_param_size / sizeof(AudioStreamRangedDescription);
- msg_Dbg(p_aout, "found %i stream formats", i_formats);
+ struct aout_sys_t *p_sys = p_aout->sys;
+ OSStatus ostatus;
- p_format_list = (AudioStreamRangedDescription *)malloc(i_param_size);
- if (p_format_list == NULL)
- return false;
+ aout_MuteReport(p_aout, mute);
- err = AudioObjectGetPropertyData(i_stream_id, &physicalFormatsAddress, 0, NULL, &i_param_size, p_format_list);
- if (err != noErr) {
- msg_Err(p_aout, "could not get the list of streamformats: [%4.4s]", (char *)&err);
- free(p_format_list);
- p_format_list = NULL;
- return false;
- }
+ float volume = .0;
- for (int i = 0; i < i_formats; i++) {
-#ifndef NDEBUG
- msg_Dbg(p_aout, STREAM_FORMAT_MSG("supported format: ", p_format_list[i].mFormat));
-#endif
+ if (!mute)
+ volume = var_InheritInteger(p_aout, "auhal-volume") / (float)AOUT_VOLUME_DEFAULT;
- if (p_format_list[i].mFormat.mFormatID == 'IAC3' ||
- p_format_list[i].mFormat.mFormatID == 'iac3' ||
- p_format_list[i].mFormat.mFormatID == kAudioFormat60958AC3 ||
- p_format_list[i].mFormat.mFormatID == kAudioFormatAC3)
- b_return = true;
- }
+ ostatus = AudioUnitSetParameter(p_sys->au_unit,
+ kHALOutputParam_Volume,
+ kAudioUnitScope_Global,
+ 0,
+ volume * volume * volume,
+ 0);
- free(p_format_list);
- return b_return;
+ return ostatus;
}
-/*****************************************************************************
- * AudioStreamChangeFormat: Change i_stream_id to change_format
- *****************************************************************************/
-static int AudioStreamChangeFormat(audio_output_t *p_aout, AudioStreamID i_stream_id, AudioStreamBasicDescription change_format)
-{
- OSStatus err = noErr;
- UInt32 i_param_size = 0;
-
- AudioObjectPropertyAddress physicalFormatAddress = { kAudioStreamPropertyPhysicalFormat, kAudioObjectPropertyScopeGlobal, kAudioObjectPropertyElementMaster };
-
- struct { vlc_mutex_t lock; vlc_cond_t cond; } w;
-
- msg_Dbg(p_aout, STREAM_FORMAT_MSG("setting stream format: ", change_format));
-
- /* Condition because SetProperty is asynchronious */
- vlc_cond_init(&w.cond);
- vlc_mutex_init(&w.lock);
- vlc_mutex_lock(&w.lock);
-
- /* Install the callback */
- err = AudioObjectAddPropertyListener(i_stream_id, &physicalFormatAddress, StreamListener, (void *)&w);
- if (err != noErr) {
- msg_Err(p_aout, "AudioObjectAddPropertyListener for kAudioStreamPropertyPhysicalFormat failed: [%4.4s]", (char *)&err);
- return false;
- }
-
- /* change the format */
- err = AudioObjectSetPropertyData(i_stream_id, &physicalFormatAddress, 0, NULL, sizeof(AudioStreamBasicDescription),
- &change_format);
- if (err != noErr) {
- msg_Err(p_aout, "could not set the stream format: [%4.4s]", (char *)&err);
- return false;
- }
-
- /* The AudioStreamSetProperty is not only asynchronious (requiring the locks)
- * it is also not atomic in its behaviour.
- * Therefore we check 5 times before we really give up.
- * FIXME: failing isn't actually implemented yet. */
- for (int i = 0; i < 5; i++) {
- AudioStreamBasicDescription actual_format;
- mtime_t timeout = mdate() + 500000;
-
- if (vlc_cond_timedwait(&w.cond, &w.lock, timeout))
- msg_Dbg(p_aout, "reached timeout");
-
- i_param_size = sizeof(AudioStreamBasicDescription);
- err = AudioObjectGetPropertyData(i_stream_id, &physicalFormatAddress, 0, NULL, &i_param_size, &actual_format);
-
- msg_Dbg(p_aout, STREAM_FORMAT_MSG("actual format in use: ", actual_format));
- if (actual_format.mSampleRate == change_format.mSampleRate &&
- actual_format.mFormatID == change_format.mFormatID &&
- actual_format.mFramesPerPacket == change_format.mFramesPerPacket) {
- /* The right format is now active */
- break;
- }
- /* We need to check again */
- }
-
- /* Removing the property listener */
- err = AudioObjectRemovePropertyListener(i_stream_id, &physicalFormatAddress, StreamListener, (void *)&w);
- if (err != noErr) {
- msg_Err(p_aout, "AudioStreamRemovePropertyListener failed: [%4.4s]", (char *)&err);
- return false;
- }
-
- /* Destroy the lock and condition */
- vlc_mutex_unlock(&w.lock);
- vlc_mutex_destroy(&w.lock);
- vlc_cond_destroy(&w.cond);
-
- return true;
-}
+#pragma mark -
+#pragma mark actual playback
static void Play (audio_output_t * p_aout, block_t * p_block)
{
return noErr;
}
-/*****************************************************************************
+/*
* RenderCallbackSPDIF: callback for SPDIF audio output
- *****************************************************************************/
+ */
static OSStatus RenderCallbackSPDIF (AudioDeviceID inDevice,
const AudioTimeStamp * inNow,
const void * inInputData,
return noErr;
}
-/*****************************************************************************
+#pragma mark -
+#pragma mark Stream / Hardware Listeners
+
+/*
* HardwareListener: Warns us of changes in the list of registered devices
- *****************************************************************************/
+ */
static OSStatus HardwareListener(AudioObjectID inObjectID, UInt32 inNumberAddresses, const AudioObjectPropertyAddress inAddresses[], void*inClientData)
{
OSStatus err = noErr;
return err;
}
-/*****************************************************************************
- * StreamListener
- *****************************************************************************/
+/*
+ * StreamListener: check whether the device's physical format changes on-the-fly (unlikely)
+ */
static OSStatus StreamListener(AudioObjectID inObjectID, UInt32 inNumberAddresses, const AudioObjectPropertyAddress inAddresses[], void*inClientData)
{
OSStatus err = noErr;
return err;
}
-/*****************************************************************************
- * VolumeSet: Implements volume_set(). Update the CoreAudio AU volume immediately.
- *****************************************************************************/
-static int VolumeSet(audio_output_t * p_aout, float volume)
-{
- struct aout_sys_t *p_sys = p_aout->sys;
- OSStatus ostatus;
+#pragma mark -
+#pragma mark helpers
- aout_VolumeReport(p_aout, volume);
+/*
+ * AudioDeviceHasOutput: Checks if the device is actually an output device
+ */
+static int AudioDeviceHasOutput(AudioDeviceID i_dev_id)
+{
+ UInt32 dataSize = 0;
+ OSStatus status;
- /* Set volume for output unit */
- ostatus = AudioUnitSetParameter(p_sys->au_unit,
- kHALOutputParam_Volume,
- kAudioUnitScope_Global,
- 0,
- volume * volume * volume,
- 0);
+ AudioObjectPropertyAddress streamsAddress = { kAudioDevicePropertyStreams, kAudioDevicePropertyScopeOutput, kAudioObjectPropertyElementMaster };
+ status = AudioObjectGetPropertyDataSize(i_dev_id, &streamsAddress, 0, NULL, &dataSize);
- if (var_InheritBool(p_aout, "volume-save"))
- config_PutInt(p_aout, "auhal-volume", lroundf(volume * AOUT_VOLUME_DEFAULT));
+ if (dataSize == 0 || status != noErr)
+ return FALSE;
- return ostatus;
+ return TRUE;
}
-static int MuteSet(audio_output_t * p_aout, bool mute)
+/*
+ * AudioDeviceSupportsDigital: Checks if device supports raw bitstreams
+ */
+static int AudioDeviceSupportsDigital(audio_output_t *p_aout, AudioDeviceID i_dev_id)
{
- struct aout_sys_t *p_sys = p_aout->sys;
- OSStatus ostatus;
+ OSStatus err = noErr;
+ UInt32 i_param_size = 0;
+ AudioStreamID *p_streams = NULL;
+ int i_streams = 0;
+ bool b_return = false;
- aout_MuteReport(p_aout, mute);
+ /* Retrieve all the output streams */
+ AudioObjectPropertyAddress streamsAddress = { kAudioDevicePropertyStreams, kAudioDevicePropertyScopeOutput, kAudioObjectPropertyElementMaster };
+ err = AudioObjectGetPropertyDataSize(i_dev_id, &streamsAddress, 0, NULL, &i_param_size);
+ if (err != noErr) {
+ msg_Err(p_aout, "could not get number of streams: [%s] (%i)", (char *)&err, (int32_t)err);
+ return false;
+ }
- float volume = .0;
+ i_streams = i_param_size / sizeof(AudioStreamID);
+ p_streams = (AudioStreamID *)malloc(i_param_size);
+ if (p_streams == NULL)
+ return VLC_ENOMEM;
- if (!mute)
- volume = var_InheritInteger(p_aout, "auhal-volume") / (float)AOUT_VOLUME_DEFAULT;
+ err = AudioObjectGetPropertyData(i_dev_id, &streamsAddress, 0, NULL, &i_param_size, p_streams);
+ if (err != noErr) {
+ msg_Err(p_aout, "could not get list of streams: [%s]", (char *)&err);
+ return false;
+ }
- ostatus = AudioUnitSetParameter(p_sys->au_unit,
- kHALOutputParam_Volume,
- kAudioUnitScope_Global,
- 0,
- volume * volume * volume,
- 0);
+ for (int i = 0; i < i_streams; i++) {
+ if (AudioStreamSupportsDigital(p_aout, p_streams[i]))
+ b_return = true;
+ }
- return ostatus;
+ free(p_streams);
+ return b_return;
}
-static int Open(vlc_object_t *obj)
+/*
+ * AudioStreamSupportsDigital: Checks if audio stream is compatible with raw bitstreams
+ */
+static int AudioStreamSupportsDigital(audio_output_t *p_aout, AudioStreamID i_stream_id)
{
- audio_output_t *aout = (audio_output_t *)obj;
- aout_sys_t *sys = malloc(sizeof (*sys));
+ OSStatus err = noErr;
+ UInt32 i_param_size = 0;
+ AudioStreamRangedDescription *p_format_list = NULL;
+ int i_formats = 0;
+ bool b_return = false;
- if (unlikely(sys == NULL))
- return VLC_ENOMEM;
+ /* Retrieve all the stream formats supported by each output stream */
+ AudioObjectPropertyAddress physicalFormatsAddress = { kAudioStreamPropertyAvailablePhysicalFormats, kAudioObjectPropertyScopeGlobal, 0 };
+ err = AudioObjectGetPropertyDataSize(i_stream_id, &physicalFormatsAddress, 0, NULL, &i_param_size);
+ if (err != noErr) {
+ msg_Err(p_aout, "could not get number of streamformats: [%s] (%i)", (char *)&err, (int32_t)err);
+ return false;
+ }
- vlc_mutex_init(&sys->lock);
+ i_formats = i_param_size / sizeof(AudioStreamRangedDescription);
+ msg_Dbg(p_aout, "found %i stream formats", i_formats);
- aout->sys = sys;
- aout->start = Start;
- aout->stop = Stop;
- aout->volume_set = VolumeSet;
- aout->mute_set = MuteSet;
- aout->device_enum = DeviceList;
- aout->sys->devices = NULL;
- aout->device_select = SwitchAudioDevice;
+ p_format_list = (AudioStreamRangedDescription *)malloc(i_param_size);
+ if (p_format_list == NULL)
+ return false;
- RebuildDeviceList(aout);
+ err = AudioObjectGetPropertyData(i_stream_id, &physicalFormatsAddress, 0, NULL, &i_param_size, p_format_list);
+ if (err != noErr) {
+ msg_Err(p_aout, "could not get the list of streamformats: [%4.4s]", (char *)&err);
+ free(p_format_list);
+ p_format_list = NULL;
+ return false;
+ }
- /* remember the volume */
- aout_VolumeReport(aout, var_InheritInteger(aout, "auhal-volume") / (float)AOUT_VOLUME_DEFAULT);
- MuteSet(aout, var_InheritBool(aout, "mute"));
+ for (int i = 0; i < i_formats; i++) {
+#ifndef NDEBUG
+ msg_Dbg(p_aout, STREAM_FORMAT_MSG("supported format: ", p_format_list[i].mFormat));
+#endif
- return VLC_SUCCESS;
+ if (p_format_list[i].mFormat.mFormatID == 'IAC3' ||
+ p_format_list[i].mFormat.mFormatID == 'iac3' ||
+ p_format_list[i].mFormat.mFormatID == kAudioFormat60958AC3 ||
+ p_format_list[i].mFormat.mFormatID == kAudioFormatAC3)
+ b_return = true;
+ }
+
+ free(p_format_list);
+ return b_return;
}
-static void Close(vlc_object_t *obj)
+/*
+ * AudioStreamChangeFormat: switch stream format based on the provided description
+ */
+static int AudioStreamChangeFormat(audio_output_t *p_aout, AudioStreamID i_stream_id, AudioStreamBasicDescription change_format)
{
- audio_output_t *aout = (audio_output_t *)obj;
- aout_sys_t *sys = aout->sys;
+ OSStatus err = noErr;
+ UInt32 i_param_size = 0;
- for (struct audio_device_t * device = sys->devices, *next; device != NULL; device = next) {
- next = device->next;
- free(device->name);
- free(device);
+ AudioObjectPropertyAddress physicalFormatAddress = { kAudioStreamPropertyPhysicalFormat, kAudioObjectPropertyScopeGlobal, kAudioObjectPropertyElementMaster };
+
+ struct { vlc_mutex_t lock; vlc_cond_t cond; } w;
+
+ msg_Dbg(p_aout, STREAM_FORMAT_MSG("setting stream format: ", change_format));
+
+ /* Condition because SetProperty is asynchronious */
+ vlc_cond_init(&w.cond);
+ vlc_mutex_init(&w.lock);
+ vlc_mutex_lock(&w.lock);
+
+ /* Install the callback */
+ err = AudioObjectAddPropertyListener(i_stream_id, &physicalFormatAddress, StreamListener, (void *)&w);
+ if (err != noErr) {
+ msg_Err(p_aout, "AudioObjectAddPropertyListener for kAudioStreamPropertyPhysicalFormat failed: [%4.4s]", (char *)&err);
+ return false;
}
- vlc_mutex_destroy(&sys->lock);
+ /* change the format */
+ err = AudioObjectSetPropertyData(i_stream_id, &physicalFormatAddress, 0, NULL, sizeof(AudioStreamBasicDescription),
+ &change_format);
+ if (err != noErr) {
+ msg_Err(p_aout, "could not set the stream format: [%4.4s]", (char *)&err);
+ return false;
+ }
- free(sys);
+ /* The AudioStreamSetProperty is not only asynchronious (requiring the locks)
+ * it is also not atomic in its behaviour.
+ * Therefore we check 5 times before we really give up.
+ * FIXME: failing isn't actually implemented yet. */
+ for (int i = 0; i < 5; i++) {
+ AudioStreamBasicDescription actual_format;
+ mtime_t timeout = mdate() + 500000;
+
+ if (vlc_cond_timedwait(&w.cond, &w.lock, timeout))
+ msg_Dbg(p_aout, "reached timeout");
+
+ i_param_size = sizeof(AudioStreamBasicDescription);
+ err = AudioObjectGetPropertyData(i_stream_id, &physicalFormatAddress, 0, NULL, &i_param_size, &actual_format);
+
+ msg_Dbg(p_aout, STREAM_FORMAT_MSG("actual format in use: ", actual_format));
+ if (actual_format.mSampleRate == change_format.mSampleRate &&
+ actual_format.mFormatID == change_format.mFormatID &&
+ actual_format.mFramesPerPacket == change_format.mFramesPerPacket) {
+ /* The right format is now active */
+ break;
+ }
+ /* We need to check again */
+ }
+
+ /* Removing the property listener */
+ err = AudioObjectRemovePropertyListener(i_stream_id, &physicalFormatAddress, StreamListener, (void *)&w);
+ if (err != noErr) {
+ msg_Err(p_aout, "AudioStreamRemovePropertyListener failed: [%4.4s]", (char *)&err);
+ return false;
+ }
+
+ /* Destroy the lock and condition */
+ vlc_mutex_unlock(&w.lock);
+ vlc_mutex_destroy(&w.lock);
+ vlc_cond_destroy(&w.cond);
+
+ return true;
}
projects / vlc / commitdiff