1 /*****************************************************************************
2 * auhal.c: AUHAL and Coreaudio output plugin
3 *****************************************************************************
4 * Copyright (C) 2005 the VideoLAN team
7 * Authors: Derk-Jan Hartman <hartman at videolan dot org>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
33 #include <vlc_common.h>
34 #include <vlc_plugin.h>
35 #include <vlc_interface.h>
38 #include <CoreAudio/CoreAudio.h>
39 #include <AudioUnit/AudioUnitProperties.h>
40 #include <AudioUnit/AudioUnitParameters.h>
41 #include <AudioUnit/AudioOutputUnit.h>
42 #include <AudioToolbox/AudioFormat.h>
44 #define STREAM_FORMAT_MSG( pre, sfm ) \
45 pre "[%ld][%4.4s][%ld][%ld][%ld][%ld][%ld][%ld]", \
46 (UInt32)sfm.mSampleRate, (char *)&sfm.mFormatID, \
47 sfm.mFormatFlags, sfm.mBytesPerPacket, \
48 sfm.mFramesPerPacket, sfm.mBytesPerFrame, \
49 sfm.mChannelsPerFrame, sfm.mBitsPerChannel
51 #define STREAM_FORMAT_MSG_FULL( pre, sfm ) \
52 pre ":\nsamplerate: [%ld]\nFormatID: [%4.4s]\nFormatFlags: [%ld]\nBypesPerPacket: [%ld]\nFramesPerPacket: [%ld]\nBytesPerFrame: [%ld]\nChannelsPerFrame: [%ld]\nBitsPerChannel[%ld]", \
53 (UInt32)sfm.mSampleRate, (char *)&sfm.mFormatID, \
54 sfm.mFormatFlags, sfm.mBytesPerPacket, \
55 sfm.mFramesPerPacket, sfm.mBytesPerFrame, \
56 sfm.mChannelsPerFrame, sfm.mBitsPerChannel
58 #define BUFSIZE 0xffffff
59 #define AOUT_VAR_SPDIF_FLAG 0xf00000
63 * - clean up the debug info
65 * - be better at changing stream setup or devices setup changes while playing.
69 /*****************************************************************************
70 * aout_sys_t: private audio output method descriptor
71 *****************************************************************************
72 * This structure is part of the audio output thread descriptor.
73 * It describes the CoreAudio specific properties of an output thread.
74 *****************************************************************************/
77 AudioDeviceID i_default_dev; /* Keeps DeviceID of defaultOutputDevice */
78 AudioDeviceID i_selected_dev; /* Keeps DeviceID of the selected device */
79 UInt32 i_devices; /* Number of CoreAudio Devices */
80 bool b_supports_digital;/* Does the currently selected device support digital mode? */
81 bool b_digital; /* Are we running in digital mode? */
82 mtime_t clock_diff; /* Difference between VLC clock and Device clock */
85 Component au_component; /* The Audiocomponent we use */
86 AudioUnit au_unit; /* The AudioUnit we use */
87 uint8_t p_remainder_buffer[BUFSIZE];
88 uint32_t i_read_bytes;
89 uint32_t i_total_bytes;
91 /* CoreAudio SPDIF mode specific */
92 pid_t i_hog_pid; /* The keep the pid of our hog status */
93 AudioStreamID i_stream_id; /* The StreamID that has a cac3 streamformat */
94 int i_stream_index; /* The index of i_stream_id in an AudioBufferList */
95 AudioStreamBasicDescription stream_format; /* The format we changed the stream to */
96 AudioStreamBasicDescription sfmt_revert; /* The original format of the stream */
97 bool b_revert; /* Wether we need to revert the stream format */
98 bool b_changed_mixing;/* Wether we need to set the mixing mode back */
101 /*****************************************************************************
103 *****************************************************************************/
104 static int Open ( vlc_object_t * );
105 static int OpenAnalog ( aout_instance_t * );
106 static int OpenSPDIF ( aout_instance_t * );
107 static void Close ( vlc_object_t * );
109 static void Play ( aout_instance_t * );
110 static void Probe ( aout_instance_t * );
112 static int AudioDeviceHasOutput ( AudioDeviceID );
113 static int AudioDeviceSupportsDigital( aout_instance_t *, AudioDeviceID );
114 static int AudioStreamSupportsDigital( aout_instance_t *, AudioStreamID );
115 static int AudioStreamChangeFormat ( aout_instance_t *, AudioStreamID, AudioStreamBasicDescription );
117 static OSStatus RenderCallbackAnalog ( vlc_object_t *, AudioUnitRenderActionFlags *, const AudioTimeStamp *,
118 unsigned int, unsigned int, AudioBufferList *);
119 static OSStatus RenderCallbackSPDIF ( AudioDeviceID, const AudioTimeStamp *, const void *, const AudioTimeStamp *,
120 AudioBufferList *, const AudioTimeStamp *, void * );
121 static OSStatus HardwareListener ( AudioHardwarePropertyID, void *);
122 static OSStatus StreamListener ( AudioStreamID, UInt32,
123 AudioDevicePropertyID, void * );
124 static int AudioDeviceCallback ( vlc_object_t *, const char *,
125 vlc_value_t, vlc_value_t, void * );
128 /*****************************************************************************
130 *****************************************************************************/
131 #define ADEV_TEXT N_("Audio Device")
132 #define ADEV_LONGTEXT N_("Choose a number corresponding to the number of an " \
133 "audio device, as listed in your 'Audio Device' menu. This device will " \
134 "then be used by default for audio playback.")
137 set_shortname( "auhal" );
138 set_description( N_("HAL AudioUnit output") );
139 set_capability( "audio output", 101 );
140 set_category( CAT_AUDIO );
141 set_subcategory( SUBCAT_AUDIO_AOUT );
142 set_callbacks( Open, Close );
143 add_integer( "macosx-audio-device", 0, NULL, ADEV_TEXT, ADEV_LONGTEXT, false );
146 /*****************************************************************************
147 * Open: open macosx audio output
148 *****************************************************************************/
149 static int Open( vlc_object_t * p_this )
151 OSStatus err = noErr;
152 UInt32 i_param_size = 0;
153 struct aout_sys_t *p_sys = NULL;
155 aout_instance_t *p_aout = (aout_instance_t *)p_this;
157 /* Use int here, to match kAudioDevicePropertyDeviceIsAlive
161 /* Allocate structure */
162 p_aout->output.p_sys = malloc( sizeof( aout_sys_t ) );
163 if( p_aout->output.p_sys == NULL )
166 p_sys = p_aout->output.p_sys;
167 p_sys->i_default_dev = 0;
168 p_sys->i_selected_dev = 0;
169 p_sys->i_devices = 0;
170 p_sys->b_supports_digital = false;
171 p_sys->b_digital = false;
172 p_sys->au_component = NULL;
173 p_sys->au_unit = NULL;
174 p_sys->clock_diff = (mtime_t) 0;
175 p_sys->i_read_bytes = 0;
176 p_sys->i_total_bytes = 0;
177 p_sys->i_hog_pid = -1;
178 p_sys->i_stream_id = 0;
179 p_sys->i_stream_index = -1;
180 p_sys->b_revert = false;
181 p_sys->b_changed_mixing = false;
182 memset( p_sys->p_remainder_buffer, 0, sizeof(uint8_t) * BUFSIZE );
184 p_aout->output.pf_play = Play;
186 aout_FormatPrint( p_aout, "VLC is looking for:", (audio_sample_format_t *)&p_aout->output.output );
188 /* Persistent device variable */
189 if( var_Type( p_aout->p_libvlc, "macosx-audio-device" ) == 0 )
191 var_Create( p_aout->p_libvlc, "macosx-audio-device", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
194 /* Build a list of devices */
195 if( var_Type( p_aout, "audio-device" ) == 0 )
200 /* What device do we want? */
201 if( var_Get( p_aout, "audio-device", &val ) < 0 )
203 msg_Err( p_aout, "audio-device var does not exist. device probe failed." );
207 p_sys->i_selected_dev = val.i_int & ~AOUT_VAR_SPDIF_FLAG; /* remove SPDIF flag to get the true DeviceID */
208 p_sys->b_supports_digital = ( val.i_int & AOUT_VAR_SPDIF_FLAG ) ? true : false;
210 /* Check if the desired device is alive and usable */
211 /* TODO: add a callback to the device to alert us if the device dies */
212 i_param_size = sizeof( b_alive );
213 err = AudioDeviceGetProperty( p_sys->i_selected_dev, 0, FALSE,
214 kAudioDevicePropertyDeviceIsAlive,
215 &i_param_size, &b_alive );
219 /* Be tolerant, only give a warning here */
220 msg_Warn( p_aout, "could not check whether device [0x%x] is alive: %4.4s", (unsigned int)p_sys->i_selected_dev, (char *)&err );
224 if( b_alive == false )
226 msg_Warn( p_aout, "selected audio device is not alive, switching to default device" );
227 p_sys->i_selected_dev = p_sys->i_default_dev;
230 i_param_size = sizeof( p_sys->i_hog_pid );
231 err = AudioDeviceGetProperty( p_sys->i_selected_dev, 0, FALSE,
232 kAudioDevicePropertyHogMode,
233 &i_param_size, &p_sys->i_hog_pid );
237 /* This is not a fatal error. Some drivers simply don't support this property */
238 msg_Warn( p_aout, "could not check whether device is hogged: %4.4s",
240 p_sys->i_hog_pid = -1;
243 if( p_sys->i_hog_pid != -1 && p_sys->i_hog_pid != getpid() )
245 msg_Err( p_aout, "Selected audio device is exclusively in use by another program." );
246 intf_UserFatal( p_aout, false, _("Audio output failed"),
247 _("The selected audio output device is exclusively in "
248 "use by another program.") );
252 /* Check for Digital mode or Analog output mode */
253 if( AOUT_FMT_NON_LINEAR( &p_aout->output.output ) && p_sys->b_supports_digital )
255 if( OpenSPDIF( p_aout ) )
260 if( OpenAnalog( p_aout ) )
265 /* If we reach this, this aout has failed */
266 var_Destroy( p_aout, "audio-device" );
271 /*****************************************************************************
272 * Open: open and setup a HAL AudioUnit to do analog (multichannel) audio output
273 *****************************************************************************/
274 static int OpenAnalog( aout_instance_t *p_aout )
276 struct aout_sys_t *p_sys = p_aout->output.p_sys;
277 OSStatus err = noErr;
278 UInt32 i_param_size = 0, i = 0;
280 ComponentDescription desc;
281 AudioStreamBasicDescription DeviceFormat;
282 AudioChannelLayout *layout;
283 AudioChannelLayout new_layout;
284 AURenderCallbackStruct input;
286 /* Lets go find our Component */
287 desc.componentType = kAudioUnitType_Output;
288 desc.componentSubType = kAudioUnitSubType_HALOutput;
289 desc.componentManufacturer = kAudioUnitManufacturer_Apple;
290 desc.componentFlags = 0;
291 desc.componentFlagsMask = 0;
293 p_sys->au_component = FindNextComponent( NULL, &desc );
294 if( p_sys->au_component == NULL )
296 msg_Warn( p_aout, "we cannot find our HAL component" );
300 err = OpenAComponent( p_sys->au_component, &p_sys->au_unit );
303 msg_Warn( p_aout, "we cannot open our HAL component" );
307 /* Set the device we will use for this output unit */
308 err = AudioUnitSetProperty( p_sys->au_unit,
309 kAudioOutputUnitProperty_CurrentDevice,
310 kAudioUnitScope_Global,
312 &p_sys->i_selected_dev,
313 sizeof( AudioDeviceID ));
317 msg_Warn( p_aout, "we cannot select the audio device" );
321 /* Get the current format */
322 i_param_size = sizeof(AudioStreamBasicDescription);
324 err = AudioUnitGetProperty( p_sys->au_unit,
325 kAudioUnitProperty_StreamFormat,
326 kAudioUnitScope_Input,
331 if( err != noErr ) return false;
332 else msg_Dbg( p_aout, STREAM_FORMAT_MSG( "current format is: ", DeviceFormat ) );
334 /* Get the channel layout of the device side of the unit (vlc -> unit -> device) */
335 err = AudioUnitGetPropertyInfo( p_sys->au_unit,
336 kAudioDevicePropertyPreferredChannelLayout,
337 kAudioUnitScope_Output,
344 layout = (AudioChannelLayout *)malloc( i_param_size);
346 verify_noerr( AudioUnitGetProperty( p_sys->au_unit,
347 kAudioDevicePropertyPreferredChannelLayout,
348 kAudioUnitScope_Output,
353 /* We need to "fill out" the ChannelLayout, because there are multiple ways that it can be set */
354 if( layout->mChannelLayoutTag == kAudioChannelLayoutTag_UseChannelBitmap)
356 /* bitmap defined channellayout */
357 verify_noerr( AudioFormatGetProperty( kAudioFormatProperty_ChannelLayoutForBitmap,
358 sizeof( UInt32), &layout->mChannelBitmap,
362 else if( layout->mChannelLayoutTag != kAudioChannelLayoutTag_UseChannelDescriptions )
364 /* layouttags defined channellayout */
365 verify_noerr( AudioFormatGetProperty( kAudioFormatProperty_ChannelLayoutForTag,
366 sizeof( AudioChannelLayoutTag ), &layout->mChannelLayoutTag,
371 msg_Dbg( p_aout, "layout of AUHAL has %d channels" , (int)layout->mNumberChannelDescriptions );
373 /* Initialize the VLC core channel count */
374 p_aout->output.output.i_physical_channels = 0;
375 i_original = p_aout->output.output.i_original_channels & AOUT_CHAN_PHYSMASK;
377 if( i_original == AOUT_CHAN_CENTER || layout->mNumberChannelDescriptions < 2 )
379 /* We only need Mono or cannot output more than 1 channel */
380 p_aout->output.output.i_physical_channels = AOUT_CHAN_CENTER;
382 else if( i_original == (AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT) || layout->mNumberChannelDescriptions < 3 )
384 /* We only need Stereo or cannot output more than 2 channels */
385 p_aout->output.output.i_physical_channels = AOUT_CHAN_RIGHT | AOUT_CHAN_LEFT;
389 /* We want more than stereo and we can do that */
390 for( i = 0; i < layout->mNumberChannelDescriptions; i++ )
392 msg_Dbg( p_aout, "this is channel: %d", (int)layout->mChannelDescriptions[i].mChannelLabel );
394 switch( layout->mChannelDescriptions[i].mChannelLabel )
396 case kAudioChannelLabel_Left:
397 p_aout->output.output.i_physical_channels |= AOUT_CHAN_LEFT;
399 case kAudioChannelLabel_Right:
400 p_aout->output.output.i_physical_channels |= AOUT_CHAN_RIGHT;
402 case kAudioChannelLabel_Center:
403 p_aout->output.output.i_physical_channels |= AOUT_CHAN_CENTER;
405 case kAudioChannelLabel_LFEScreen:
406 p_aout->output.output.i_physical_channels |= AOUT_CHAN_LFE;
408 case kAudioChannelLabel_LeftSurround:
409 p_aout->output.output.i_physical_channels |= AOUT_CHAN_REARLEFT;
411 case kAudioChannelLabel_RightSurround:
412 p_aout->output.output.i_physical_channels |= AOUT_CHAN_REARRIGHT;
414 case kAudioChannelLabel_RearSurroundLeft:
415 p_aout->output.output.i_physical_channels |= AOUT_CHAN_MIDDLELEFT;
417 case kAudioChannelLabel_RearSurroundRight:
418 p_aout->output.output.i_physical_channels |= AOUT_CHAN_MIDDLERIGHT;
420 case kAudioChannelLabel_CenterSurround:
421 p_aout->output.output.i_physical_channels |= AOUT_CHAN_REARCENTER;
424 msg_Warn( p_aout, "unrecognized channel form provided by driver: %d", (int)layout->mChannelDescriptions[i].mChannelLabel );
427 if( p_aout->output.output.i_physical_channels == 0 )
429 p_aout->output.output.i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
430 msg_Err( p_aout, "You should configure your speaker layout with Audio Midi Setup Utility in /Applications/Utilities. Now using Stereo mode." );
431 intf_UserFatal( p_aout, false, _("Audio device is not configured"),
432 _("You should configure your speaker layout with "
433 "the \"Audio Midi Setup\" utility in /Applications/"
434 "Utilities. Stereo mode is being used now.") );
441 msg_Warn( p_aout, "this driver does not support kAudioDevicePropertyPreferredChannelLayout. BAD DRIVER AUTHOR !!!" );
442 p_aout->output.output.i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
445 msg_Dbg( p_aout, "selected %d physical channels for device output", aout_FormatNbChannels( &p_aout->output.output ) );
446 msg_Dbg( p_aout, "VLC will output: %s", aout_FormatPrintChannels( &p_aout->output.output ));
448 memset (&new_layout, 0, sizeof(new_layout));
449 switch( aout_FormatNbChannels( &p_aout->output.output ) )
452 new_layout.mChannelLayoutTag = kAudioChannelLayoutTag_Mono;
455 new_layout.mChannelLayoutTag = kAudioChannelLayoutTag_Stereo;
458 if( p_aout->output.output.i_physical_channels & AOUT_CHAN_CENTER )
460 new_layout.mChannelLayoutTag = kAudioChannelLayoutTag_DVD_7; // L R C
462 else if( p_aout->output.output.i_physical_channels & AOUT_CHAN_LFE )
464 new_layout.mChannelLayoutTag = kAudioChannelLayoutTag_DVD_4; // L R LFE
468 if( p_aout->output.output.i_physical_channels & ( AOUT_CHAN_CENTER | AOUT_CHAN_LFE ) )
470 new_layout.mChannelLayoutTag = kAudioChannelLayoutTag_DVD_10; // L R C LFE
472 else if( p_aout->output.output.i_physical_channels & ( AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT ) )
474 new_layout.mChannelLayoutTag = kAudioChannelLayoutTag_DVD_3; // L R Ls Rs
476 else if( p_aout->output.output.i_physical_channels & ( AOUT_CHAN_CENTER | AOUT_CHAN_REARCENTER ) )
478 new_layout.mChannelLayoutTag = kAudioChannelLayoutTag_DVD_3; // L R C Cs
482 if( p_aout->output.output.i_physical_channels & ( AOUT_CHAN_CENTER ) )
484 new_layout.mChannelLayoutTag = kAudioChannelLayoutTag_DVD_19; // L R Ls Rs C
486 else if( p_aout->output.output.i_physical_channels & ( AOUT_CHAN_LFE ) )
488 new_layout.mChannelLayoutTag = kAudioChannelLayoutTag_DVD_18; // L R Ls Rs LFE
492 if( p_aout->output.output.i_physical_channels & ( AOUT_CHAN_LFE ) )
494 new_layout.mChannelLayoutTag = kAudioChannelLayoutTag_DVD_20; // L R Ls Rs C LFE
498 new_layout.mChannelLayoutTag = kAudioChannelLayoutTag_AudioUnit_6_0; // L R Ls Rs C Cs
502 /* FIXME: This is incorrect. VLC uses the internal ordering: L R Lm Rm Lr Rr C LFE but this is wrong */
503 new_layout.mChannelLayoutTag = kAudioChannelLayoutTag_MPEG_6_1_A; // L R C LFE Ls Rs Cs
506 /* FIXME: This is incorrect. VLC uses the internal ordering: L R Lm Rm Lr Rr C LFE but this is wrong */
507 new_layout.mChannelLayoutTag = kAudioChannelLayoutTag_MPEG_7_1_A; // L R C LFE Ls Rs Lc Rc
511 /* Set up the format to be used */
512 DeviceFormat.mSampleRate = p_aout->output.output.i_rate;
513 DeviceFormat.mFormatID = kAudioFormatLinearPCM;
515 /* We use float 32. It's the best supported format by both VLC and Coreaudio */
516 p_aout->output.output.i_format = VLC_FOURCC( 'f','l','3','2');
517 DeviceFormat.mFormatFlags = kAudioFormatFlagsNativeFloatPacked;
518 DeviceFormat.mBitsPerChannel = 32;
519 DeviceFormat.mChannelsPerFrame = aout_FormatNbChannels( &p_aout->output.output );
521 /* Calculate framesizes and stuff */
522 DeviceFormat.mFramesPerPacket = 1;
523 DeviceFormat.mBytesPerFrame = DeviceFormat.mBitsPerChannel * DeviceFormat.mChannelsPerFrame / 8;
524 DeviceFormat.mBytesPerPacket = DeviceFormat.mBytesPerFrame * DeviceFormat.mFramesPerPacket;
526 /* Set the desired format */
527 i_param_size = sizeof(AudioStreamBasicDescription);
528 verify_noerr( AudioUnitSetProperty( p_sys->au_unit,
529 kAudioUnitProperty_StreamFormat,
530 kAudioUnitScope_Input,
535 msg_Dbg( p_aout, STREAM_FORMAT_MSG( "we set the AU format: " , DeviceFormat ) );
537 /* Retrieve actual format */
538 verify_noerr( AudioUnitGetProperty( p_sys->au_unit,
539 kAudioUnitProperty_StreamFormat,
540 kAudioUnitScope_Input,
545 msg_Dbg( p_aout, STREAM_FORMAT_MSG( "the actual set AU format is " , DeviceFormat ) );
547 /* Do the last VLC aout setups */
548 aout_FormatPrepare( &p_aout->output.output );
549 p_aout->output.i_nb_samples = 2048;
550 aout_VolumeSoftInit( p_aout );
552 /* set the IOproc callback */
553 input.inputProc = (AURenderCallback) RenderCallbackAnalog;
554 input.inputProcRefCon = p_aout;
556 verify_noerr( AudioUnitSetProperty( p_sys->au_unit,
557 kAudioUnitProperty_SetRenderCallback,
558 kAudioUnitScope_Input,
559 0, &input, sizeof( input ) ) );
561 input.inputProc = (AURenderCallback) RenderCallbackAnalog;
562 input.inputProcRefCon = p_aout;
564 /* Set the new_layout as the layout VLC will use to feed the AU unit */
565 verify_noerr( AudioUnitSetProperty( p_sys->au_unit,
566 kAudioUnitProperty_AudioChannelLayout,
567 kAudioUnitScope_Input,
568 0, &new_layout, sizeof(new_layout) ) );
570 if( new_layout.mNumberChannelDescriptions > 0 )
571 free( new_layout.mChannelDescriptions );
574 verify_noerr( AudioUnitInitialize(p_sys->au_unit) );
576 /* Find the difference between device clock and mdate clock */
577 p_sys->clock_diff = - (mtime_t)
578 AudioConvertHostTimeToNanos( AudioGetCurrentHostTime() ) / 1000;
579 p_sys->clock_diff += mdate();
582 verify_noerr( AudioOutputUnitStart(p_sys->au_unit) );
587 /*****************************************************************************
588 * Setup a encoded digital stream (SPDIF)
589 *****************************************************************************/
590 static int OpenSPDIF( aout_instance_t * p_aout )
592 struct aout_sys_t *p_sys = p_aout->output.p_sys;
593 OSStatus err = noErr;
594 UInt32 i_param_size = 0, b_mix = 0;
595 Boolean b_writeable = false;
596 AudioStreamID *p_streams = NULL;
597 int i = 0, i_streams = 0;
599 /* Start doing the SPDIF setup proces */
600 p_sys->b_digital = true;
603 i_param_size = sizeof( p_sys->i_hog_pid );
604 p_sys->i_hog_pid = getpid() ;
606 err = AudioDeviceSetProperty( p_sys->i_selected_dev, 0, 0, FALSE,
607 kAudioDevicePropertyHogMode, i_param_size, &p_sys->i_hog_pid );
611 msg_Err( p_aout, "failed to set hogmode: [%4.4s]", (char *)&err );
615 /* Set mixable to false if we are allowed to */
616 err = AudioDeviceGetPropertyInfo( p_sys->i_selected_dev, 0, FALSE, kAudioDevicePropertySupportsMixing,
617 &i_param_size, &b_writeable );
619 err = AudioDeviceGetProperty( p_sys->i_selected_dev, 0, FALSE, kAudioDevicePropertySupportsMixing,
620 &i_param_size, &b_mix );
622 if( !err && b_writeable )
625 err = AudioDeviceSetProperty( p_sys->i_selected_dev, 0, 0, FALSE,
626 kAudioDevicePropertySupportsMixing, i_param_size, &b_mix );
627 p_sys->b_changed_mixing = true;
632 msg_Err( p_aout, "failed to set mixmode: [%4.4s]", (char *)&err );
636 /* Get a list of all the streams on this device */
637 err = AudioDeviceGetPropertyInfo( p_sys->i_selected_dev, 0, FALSE,
638 kAudioDevicePropertyStreams,
639 &i_param_size, NULL );
642 msg_Err( p_aout, "could not get number of streams: [%4.4s]", (char *)&err );
646 i_streams = i_param_size / sizeof( AudioStreamID );
647 p_streams = (AudioStreamID *)malloc( i_param_size );
648 if( p_streams == NULL )
651 err = AudioDeviceGetProperty( p_sys->i_selected_dev, 0, FALSE,
652 kAudioDevicePropertyStreams,
653 &i_param_size, p_streams );
657 msg_Err( p_aout, "could not get number of streams: [%4.4s]", (char *)&err );
662 for( i = 0; i < i_streams && p_sys->i_stream_index < 0 ; i++ )
664 /* Find a stream with a cac3 stream */
665 AudioStreamBasicDescription *p_format_list = NULL;
666 int i_formats = 0, j = 0;
667 bool b_digital = false;
669 /* Retrieve all the stream formats supported by each output stream */
670 err = AudioStreamGetPropertyInfo( p_streams[i], 0,
671 kAudioStreamPropertyPhysicalFormats,
672 &i_param_size, NULL );
675 msg_Err( p_aout, "could not get number of streamformats: [%4.4s]", (char *)&err );
679 i_formats = i_param_size / sizeof( AudioStreamBasicDescription );
680 p_format_list = (AudioStreamBasicDescription *)malloc( i_param_size );
681 if( p_format_list == NULL )
684 err = AudioStreamGetProperty( p_streams[i], 0,
685 kAudioStreamPropertyPhysicalFormats,
686 &i_param_size, p_format_list );
689 msg_Err( p_aout, "could not get the list of streamformats: [%4.4s]", (char *)&err );
690 free( p_format_list );
694 /* Check if one of the supported formats is a digital format */
695 for( j = 0; j < i_formats; j++ )
697 if( p_format_list[j].mFormatID == 'IAC3' ||
698 p_format_list[j].mFormatID == kAudioFormat60958AC3 )
707 /* if this stream supports a digital (cac3) format, then go set it. */
708 int i_requested_rate_format = -1;
709 int i_current_rate_format = -1;
710 int i_backup_rate_format = -1;
712 p_sys->i_stream_id = p_streams[i];
713 p_sys->i_stream_index = i;
715 if( p_sys->b_revert == false )
717 /* Retrieve the original format of this stream first if not done so already */
718 i_param_size = sizeof( p_sys->sfmt_revert );
719 err = AudioStreamGetProperty( p_sys->i_stream_id, 0,
720 kAudioStreamPropertyPhysicalFormat,
722 &p_sys->sfmt_revert );
725 msg_Err( p_aout, "could not retrieve the original streamformat: [%4.4s]", (char *)&err );
728 p_sys->b_revert = true;
731 for( j = 0; j < i_formats; j++ )
733 if( p_format_list[j].mFormatID == 'IAC3' ||
734 p_format_list[j].mFormatID == kAudioFormat60958AC3 )
736 if( p_format_list[j].mSampleRate == p_aout->output.output.i_rate )
738 i_requested_rate_format = j;
741 else if( p_format_list[j].mSampleRate == p_sys->sfmt_revert.mSampleRate )
743 i_current_rate_format = j;
747 if( i_backup_rate_format < 0 || p_format_list[j].mSampleRate > p_format_list[i_backup_rate_format].mSampleRate )
748 i_backup_rate_format = j;
754 if( i_requested_rate_format >= 0 ) /* We prefer to output at the samplerate of the original audio */
755 p_sys->stream_format = p_format_list[i_requested_rate_format];
756 else if( i_current_rate_format >= 0 ) /* If not possible, we will try to use the current samplerate of the device */
757 p_sys->stream_format = p_format_list[i_current_rate_format];
758 else p_sys->stream_format = p_format_list[i_backup_rate_format]; /* And if we have to, any digital format will be just fine (highest rate possible) */
760 free( p_format_list );
764 msg_Dbg( p_aout, STREAM_FORMAT_MSG( "original stream format: ", p_sys->sfmt_revert ) );
766 if( !AudioStreamChangeFormat( p_aout, p_sys->i_stream_id, p_sys->stream_format ) )
769 /* Set the format flags */
770 if( p_sys->stream_format.mFormatFlags & kAudioFormatFlagIsBigEndian )
771 p_aout->output.output.i_format = VLC_FOURCC('s','p','d','b');
773 p_aout->output.output.i_format = VLC_FOURCC('s','p','d','i');
774 p_aout->output.output.i_bytes_per_frame = AOUT_SPDIF_SIZE;
775 p_aout->output.output.i_frame_length = A52_FRAME_NB;
776 p_aout->output.i_nb_samples = p_aout->output.output.i_frame_length;
777 p_aout->output.output.i_rate = (unsigned int)p_sys->stream_format.mSampleRate;
778 aout_FormatPrepare( &p_aout->output.output );
779 aout_VolumeNoneInit( p_aout );
781 /* Add IOProc callback */
782 err = AudioDeviceAddIOProc( p_sys->i_selected_dev,
783 (AudioDeviceIOProc)RenderCallbackSPDIF,
788 msg_Err( p_aout, "AudioDeviceAddIOProc failed: [%4.4s]", (char *)&err );
792 /* Check for the difference between the Device clock and mdate */
793 p_sys->clock_diff = - (mtime_t)
794 AudioConvertHostTimeToNanos( AudioGetCurrentHostTime() ) / 1000;
795 p_sys->clock_diff += mdate();
798 err = AudioDeviceStart( p_sys->i_selected_dev, (AudioDeviceIOProc)RenderCallbackSPDIF );
801 msg_Err( p_aout, "AudioDeviceStart failed: [%4.4s]", (char *)&err );
803 err = AudioDeviceRemoveIOProc( p_sys->i_selected_dev,
804 (AudioDeviceIOProc)RenderCallbackSPDIF );
807 msg_Err( p_aout, "AudioDeviceRemoveIOProc failed: [%4.4s]", (char *)&err );
816 /*****************************************************************************
817 * Close: Close HAL AudioUnit
818 *****************************************************************************/
819 static void Close( vlc_object_t * p_this )
821 aout_instance_t *p_aout = (aout_instance_t *)p_this;
822 struct aout_sys_t *p_sys = p_aout->output.p_sys;
823 OSStatus err = noErr;
824 UInt32 i_param_size = 0;
828 verify_noerr( AudioOutputUnitStop( p_sys->au_unit ) );
829 verify_noerr( AudioUnitUninitialize( p_sys->au_unit ) );
830 verify_noerr( CloseComponent( p_sys->au_unit ) );
833 if( p_sys->b_digital )
836 err = AudioDeviceStop( p_sys->i_selected_dev,
837 (AudioDeviceIOProc)RenderCallbackSPDIF );
840 msg_Err( p_aout, "AudioDeviceStop failed: [%4.4s]", (char *)&err );
843 /* Remove IOProc callback */
844 err = AudioDeviceRemoveIOProc( p_sys->i_selected_dev,
845 (AudioDeviceIOProc)RenderCallbackSPDIF );
848 msg_Err( p_aout, "AudioDeviceRemoveIOProc failed: [%4.4s]", (char *)&err );
851 if( p_sys->b_revert )
853 AudioStreamChangeFormat( p_aout, p_sys->i_stream_id, p_sys->sfmt_revert );
856 if( p_sys->b_changed_mixing && p_sys->sfmt_revert.mFormatID != kAudioFormat60958AC3 )
860 /* Revert mixable to true if we are allowed to */
861 err = AudioDeviceGetPropertyInfo( p_sys->i_selected_dev, 0, FALSE, kAudioDevicePropertySupportsMixing,
862 &i_param_size, &b_writeable );
864 err = AudioDeviceGetProperty( p_sys->i_selected_dev, 0, FALSE, kAudioDevicePropertySupportsMixing,
865 &i_param_size, &b_mix );
867 if( !err && b_writeable )
869 msg_Dbg( p_aout, "mixable is: %d", b_mix );
871 err = AudioDeviceSetProperty( p_sys->i_selected_dev, 0, 0, FALSE,
872 kAudioDevicePropertySupportsMixing, i_param_size, &b_mix );
877 msg_Err( p_aout, "failed to set mixmode: [%4.4s]", (char *)&err );
882 err = AudioHardwareRemovePropertyListener( kAudioHardwarePropertyDevices,
887 msg_Err( p_aout, "AudioHardwareRemovePropertyListener failed: [%4.4s]", (char *)&err );
890 if( p_sys->i_hog_pid == getpid() )
892 p_sys->i_hog_pid = -1;
893 i_param_size = sizeof( p_sys->i_hog_pid );
894 err = AudioDeviceSetProperty( p_sys->i_selected_dev, 0, 0, FALSE,
895 kAudioDevicePropertyHogMode, i_param_size, &p_sys->i_hog_pid );
896 if( err != noErr ) msg_Err( p_aout, "Could not release hogmode: [%4.4s]", (char *)&err );
902 /*****************************************************************************
903 * Play: nothing to do
904 *****************************************************************************/
905 static void Play( aout_instance_t * p_aout )
910 /*****************************************************************************
911 * Probe: Check which devices the OS has, and add them to our audio-device menu
912 *****************************************************************************/
913 static void Probe( aout_instance_t * p_aout )
915 OSStatus err = noErr;
916 UInt32 i = 0, i_param_size = 0;
917 AudioDeviceID devid_def = 0;
918 AudioDeviceID *p_devices = NULL;
919 vlc_value_t val, text;
921 struct aout_sys_t *p_sys = p_aout->output.p_sys;
923 /* Get number of devices */
924 err = AudioHardwareGetPropertyInfo( kAudioHardwarePropertyDevices,
925 &i_param_size, NULL );
928 msg_Err( p_aout, "Could not get number of devices: [%4.4s]", (char *)&err );
932 p_sys->i_devices = i_param_size / sizeof( AudioDeviceID );
934 if( p_sys->i_devices < 1 )
936 msg_Err( p_aout, "No audio output devices were found." );
940 msg_Dbg( p_aout, "system has [%ld] device(s)", p_sys->i_devices );
942 /* Allocate DeviceID array */
943 p_devices = (AudioDeviceID*)malloc( sizeof(AudioDeviceID) * p_sys->i_devices );
944 if( p_devices == NULL )
947 /* Populate DeviceID array */
948 err = AudioHardwareGetProperty( kAudioHardwarePropertyDevices,
949 &i_param_size, p_devices );
952 msg_Err( p_aout, "could not get the device IDs: [%4.4s]", (char *)&err );
956 /* Find the ID of the default Device */
957 i_param_size = sizeof( AudioDeviceID );
958 err = AudioHardwareGetProperty( kAudioHardwarePropertyDefaultOutputDevice,
959 &i_param_size, &devid_def );
962 msg_Err( p_aout, "could not get default audio device: [%4.4s]", (char *)&err );
965 p_sys->i_default_dev = devid_def;
967 var_Create( p_aout, "audio-device", VLC_VAR_INTEGER|VLC_VAR_HASCHOICE );
968 text.psz_string = _("Audio Device");
969 var_Change( p_aout, "audio-device", VLC_VAR_SETTEXT, &text, NULL );
971 for( i = 0; i < p_sys->i_devices; i++ )
976 /* Retrieve the length of the device name */
977 err = AudioDeviceGetPropertyInfo(
978 p_devices[i], 0, false,
979 kAudioDevicePropertyDeviceName,
980 &i_param_size, NULL);
981 if( err ) goto error;
983 /* Retrieve the name of the device */
984 psz_name = (char *)malloc( i_param_size );
985 err = AudioDeviceGetProperty(
986 p_devices[i], 0, false,
987 kAudioDevicePropertyDeviceName,
988 &i_param_size, psz_name);
989 if( err ) goto error;
991 msg_Dbg( p_aout, "DevID: %#lx DevName: %s", p_devices[i], psz_name );
993 if( !AudioDeviceHasOutput( p_devices[i]) )
995 msg_Dbg( p_aout, "this device is INPUT only. skipping..." );
999 /* Add the menu entries */
1000 val.i_int = (int)p_devices[i];
1001 text.psz_string = strdup( psz_name );
1002 var_Change( p_aout, "audio-device", VLC_VAR_ADDCHOICE, &val, &text );
1003 if( p_sys->i_default_dev == p_devices[i] )
1005 /* The default device is the selected device normally */
1006 var_Change( p_aout, "audio-device", VLC_VAR_SETDEFAULT, &val, NULL );
1007 var_Set( p_aout, "audio-device", val );
1010 if( AudioDeviceSupportsDigital( p_aout, p_devices[i] ) )
1012 val.i_int = (int)p_devices[i] | AOUT_VAR_SPDIF_FLAG;
1013 asprintf( &text.psz_string, _("%s (Encoded Output)"), psz_name );
1014 var_Change( p_aout, "audio-device", VLC_VAR_ADDCHOICE, &val, &text );
1015 if( p_sys->i_default_dev == p_devices[i] && config_GetInt( p_aout, "spdif" ) )
1017 /* We selected to prefer SPDIF output if available
1018 * then this "dummy" entry should be selected */
1019 var_Change( p_aout, "audio-device", VLC_VAR_SETDEFAULT, &val, NULL );
1020 var_Set( p_aout, "audio-device", val );
1027 /* If a device is already "preselected", then use this device */
1028 var_Get( p_aout->p_libvlc, "macosx-audio-device", &val );
1031 var_Change( p_aout, "audio-device", VLC_VAR_SETDEFAULT, &val, NULL );
1032 var_Set( p_aout, "audio-device", val );
1035 /* If we change the device we want to use, we should renegotiate the audio chain */
1036 var_AddCallback( p_aout, "audio-device", AudioDeviceCallback, NULL );
1038 /* Attach a Listener so that we are notified of a change in the Device setup */
1039 err = AudioHardwareAddPropertyListener( kAudioHardwarePropertyDevices,
1049 var_Destroy( p_aout, "audio-device" );
1054 /*****************************************************************************
1055 * AudioDeviceHasOutput: Checks if the Device actually provides any outputs at all
1056 *****************************************************************************/
1057 static int AudioDeviceHasOutput( AudioDeviceID i_dev_id )
1062 verify_noerr( AudioDeviceGetPropertyInfo( i_dev_id, 0, FALSE, kAudioDevicePropertyStreams, &dataSize, &isWritable) );
1063 if (dataSize == 0) return FALSE;
1068 /*****************************************************************************
1069 * AudioDeviceSupportsDigital: Check i_dev_id for digital stream support.
1070 *****************************************************************************/
1071 static int AudioDeviceSupportsDigital( aout_instance_t *p_aout, AudioDeviceID i_dev_id )
1073 OSStatus err = noErr;
1074 UInt32 i_param_size = 0;
1075 AudioStreamID *p_streams = NULL;
1076 int i = 0, i_streams = 0;
1077 bool b_return = false;
1079 /* Retrieve all the output streams */
1080 err = AudioDeviceGetPropertyInfo( i_dev_id, 0, FALSE,
1081 kAudioDevicePropertyStreams,
1082 &i_param_size, NULL );
1085 msg_Err( p_aout, "could not get number of streams: [%4.4s]", (char *)&err );
1089 i_streams = i_param_size / sizeof( AudioStreamID );
1090 p_streams = (AudioStreamID *)malloc( i_param_size );
1091 if( p_streams == NULL )
1094 err = AudioDeviceGetProperty( i_dev_id, 0, FALSE,
1095 kAudioDevicePropertyStreams,
1096 &i_param_size, p_streams );
1100 msg_Err( p_aout, "could not get number of streams: [%4.4s]", (char *)&err );
1104 for( i = 0; i < i_streams; i++ )
1106 if( AudioStreamSupportsDigital( p_aout, p_streams[i] ) )
1114 /*****************************************************************************
1115 * AudioStreamSupportsDigital: Check i_stream_id for digital stream support.
1116 *****************************************************************************/
1117 static int AudioStreamSupportsDigital( aout_instance_t *p_aout, AudioStreamID i_stream_id )
1119 OSStatus err = noErr;
1120 UInt32 i_param_size = 0;
1121 AudioStreamBasicDescription *p_format_list = NULL;
1122 int i = 0, i_formats = 0;
1123 bool b_return = false;
1125 /* Retrieve all the stream formats supported by each output stream */
1126 err = AudioStreamGetPropertyInfo( i_stream_id, 0,
1127 kAudioStreamPropertyPhysicalFormats,
1128 &i_param_size, NULL );
1131 msg_Err( p_aout, "could not get number of streamformats: [%4.4s]", (char *)&err );
1135 i_formats = i_param_size / sizeof( AudioStreamBasicDescription );
1136 p_format_list = (AudioStreamBasicDescription *)malloc( i_param_size );
1137 if( p_format_list == NULL )
1140 err = AudioStreamGetProperty( i_stream_id, 0,
1141 kAudioStreamPropertyPhysicalFormats,
1142 &i_param_size, p_format_list );
1145 msg_Err( p_aout, "could not get the list of streamformats: [%4.4s]", (char *)&err );
1146 free( p_format_list);
1147 p_format_list = NULL;
1151 for( i = 0; i < i_formats; i++ )
1153 msg_Dbg( p_aout, STREAM_FORMAT_MSG( "supported format: ", p_format_list[i] ) );
1155 if( p_format_list[i].mFormatID == 'IAC3' ||
1156 p_format_list[i].mFormatID == kAudioFormat60958AC3 )
1162 free( p_format_list );
1166 /*****************************************************************************
1167 * AudioStreamChangeFormat: Change i_stream_id to change_format
1168 *****************************************************************************/
1169 static int AudioStreamChangeFormat( aout_instance_t *p_aout, AudioStreamID i_stream_id, AudioStreamBasicDescription change_format )
1171 OSStatus err = noErr;
1172 UInt32 i_param_size = 0;
1175 struct { vlc_mutex_t lock; vlc_cond_t cond; } w;
1177 msg_Dbg( p_aout, STREAM_FORMAT_MSG( "setting stream format: ", change_format ) );
1179 /* Condition because SetProperty is asynchronious */
1180 vlc_cond_init( p_aout, &w.cond );
1181 vlc_mutex_init( &w.lock );
1182 vlc_mutex_lock( &w.lock );
1184 /* Install the callback */
1185 err = AudioStreamAddPropertyListener( i_stream_id, 0,
1186 kAudioStreamPropertyPhysicalFormat,
1187 StreamListener, (void *)&w );
1190 msg_Err( p_aout, "AudioStreamAddPropertyListener failed: [%4.4s]", (char *)&err );
1194 /* change the format */
1195 err = AudioStreamSetProperty( i_stream_id, 0, 0,
1196 kAudioStreamPropertyPhysicalFormat,
1197 sizeof( AudioStreamBasicDescription ),
1201 msg_Err( p_aout, "could not set the stream format: [%4.4s]", (char *)&err );
1205 /* The AudioStreamSetProperty is not only asynchronious (requiring the locks)
1206 * it is also not atomic in its behaviour.
1207 * Therefore we check 5 times before we really give up.
1208 * FIXME: failing isn't actually implemented yet. */
1209 for( i = 0; i < 5; i++ )
1211 AudioStreamBasicDescription actual_format;
1212 mtime_t timeout = mdate() + 500000;
1214 if( vlc_cond_timedwait( &w.cond, &w.lock, timeout ) )
1216 msg_Dbg( p_aout, "reached timeout" );
1219 i_param_size = sizeof( AudioStreamBasicDescription );
1220 err = AudioStreamGetProperty( i_stream_id, 0,
1221 kAudioStreamPropertyPhysicalFormat,
1225 msg_Dbg( p_aout, STREAM_FORMAT_MSG( "actual format in use: ", actual_format ) );
1226 if( actual_format.mSampleRate == change_format.mSampleRate &&
1227 actual_format.mFormatID == change_format.mFormatID &&
1228 actual_format.mFramesPerPacket == change_format.mFramesPerPacket )
1230 /* The right format is now active */
1233 /* We need to check again */
1236 /* Removing the property listener */
1237 err = AudioStreamRemovePropertyListener( i_stream_id, 0,
1238 kAudioStreamPropertyPhysicalFormat,
1242 msg_Err( p_aout, "AudioStreamRemovePropertyListener failed: [%4.4s]", (char *)&err );
1246 /* Destroy the lock and condition */
1247 vlc_mutex_unlock( &w.lock );
1248 vlc_mutex_destroy( &w.lock );
1249 vlc_cond_destroy( &w.cond );
1254 /*****************************************************************************
1255 * RenderCallbackAnalog: This function is called everytime the AudioUnit wants
1256 * us to provide some more audio data.
1257 * Don't print anything during normal playback, calling blocking function from
1258 * this callback is not allowed.
1259 *****************************************************************************/
1260 static OSStatus RenderCallbackAnalog( vlc_object_t *_p_aout,
1261 AudioUnitRenderActionFlags *ioActionFlags,
1262 const AudioTimeStamp *inTimeStamp,
1263 unsigned int inBusNummer,
1264 unsigned int inNumberFrames,
1265 AudioBufferList *ioData )
1267 AudioTimeStamp host_time;
1268 mtime_t current_date = 0;
1269 uint32_t i_mData_bytes = 0;
1271 aout_instance_t * p_aout = (aout_instance_t *)_p_aout;
1272 struct aout_sys_t * p_sys = p_aout->output.p_sys;
1274 host_time.mFlags = kAudioTimeStampHostTimeValid;
1275 AudioDeviceTranslateTime( p_sys->i_selected_dev, inTimeStamp, &host_time );
1277 /* Check for the difference between the Device clock and mdate */
1278 p_sys->clock_diff = - (mtime_t)
1279 AudioConvertHostTimeToNanos( AudioGetCurrentHostTime() ) / 1000;
1280 p_sys->clock_diff += mdate();
1282 current_date = p_sys->clock_diff +
1283 AudioConvertHostTimeToNanos( host_time.mHostTime ) / 1000;
1284 //- ((mtime_t) 1000000 / p_aout->output.output.i_rate * 31 ); // 31 = Latency in Frames. retrieve somewhere
1286 if( ioData == NULL && ioData->mNumberBuffers < 1 )
1288 msg_Err( p_aout, "no iodata or buffers");
1291 if( ioData->mNumberBuffers > 1 )
1292 msg_Err( p_aout, "well this is weird. seems like there is more than one buffer..." );
1295 if( p_sys->i_total_bytes > 0 )
1297 i_mData_bytes = __MIN( p_sys->i_total_bytes - p_sys->i_read_bytes, ioData->mBuffers[0].mDataByteSize );
1298 vlc_memcpy( ioData->mBuffers[0].mData,
1299 &p_sys->p_remainder_buffer[p_sys->i_read_bytes],
1301 p_sys->i_read_bytes += i_mData_bytes;
1302 current_date += (mtime_t) ( (mtime_t) 1000000 / p_aout->output.output.i_rate ) *
1303 ( i_mData_bytes / 4 / aout_FormatNbChannels( &p_aout->output.output ) ); // 4 is fl32 specific
1305 if( p_sys->i_read_bytes >= p_sys->i_total_bytes )
1306 p_sys->i_read_bytes = p_sys->i_total_bytes = 0;
1309 while( i_mData_bytes < ioData->mBuffers[0].mDataByteSize )
1311 /* We don't have enough data yet */
1312 aout_buffer_t * p_buffer;
1313 p_buffer = aout_OutputNextBuffer( p_aout, current_date , false );
1315 if( p_buffer != NULL )
1317 uint32_t i_second_mData_bytes = __MIN( p_buffer->i_nb_bytes, ioData->mBuffers[0].mDataByteSize - i_mData_bytes );
1319 vlc_memcpy( (uint8_t *)ioData->mBuffers[0].mData + i_mData_bytes,
1320 p_buffer->p_buffer, i_second_mData_bytes );
1321 i_mData_bytes += i_second_mData_bytes;
1323 if( i_mData_bytes >= ioData->mBuffers[0].mDataByteSize )
1325 p_sys->i_total_bytes = p_buffer->i_nb_bytes - i_second_mData_bytes;
1326 vlc_memcpy( p_sys->p_remainder_buffer,
1327 &p_buffer->p_buffer[i_second_mData_bytes],
1328 p_sys->i_total_bytes );
1332 /* update current_date */
1333 current_date += (mtime_t) ( (mtime_t) 1000000 / p_aout->output.output.i_rate ) *
1334 ( i_second_mData_bytes / 4 / aout_FormatNbChannels( &p_aout->output.output ) ); // 4 is fl32 specific
1336 aout_BufferFree( p_buffer );
1340 vlc_memset( (uint8_t *)ioData->mBuffers[0].mData +i_mData_bytes,
1341 0,ioData->mBuffers[0].mDataByteSize - i_mData_bytes );
1342 i_mData_bytes += ioData->mBuffers[0].mDataByteSize - i_mData_bytes;
1348 /*****************************************************************************
1349 * RenderCallbackSPDIF: callback for SPDIF audio output
1350 *****************************************************************************/
1351 static OSStatus RenderCallbackSPDIF( AudioDeviceID inDevice,
1352 const AudioTimeStamp * inNow,
1353 const void * inInputData,
1354 const AudioTimeStamp * inInputTime,
1355 AudioBufferList * outOutputData,
1356 const AudioTimeStamp * inOutputTime,
1357 void * threadGlobals )
1359 aout_buffer_t * p_buffer;
1360 mtime_t current_date;
1362 aout_instance_t * p_aout = (aout_instance_t *)threadGlobals;
1363 struct aout_sys_t * p_sys = p_aout->output.p_sys;
1365 /* Check for the difference between the Device clock and mdate */
1366 p_sys->clock_diff = - (mtime_t)
1367 AudioConvertHostTimeToNanos( inNow->mHostTime ) / 1000;
1368 p_sys->clock_diff += mdate();
1370 current_date = p_sys->clock_diff +
1371 AudioConvertHostTimeToNanos( inOutputTime->mHostTime ) / 1000;
1372 //- ((mtime_t) 1000000 / p_aout->output.output.i_rate * 31 ); // 31 = Latency in Frames. retrieve somewhere
1374 p_buffer = aout_OutputNextBuffer( p_aout, current_date, true );
1376 #define BUFFER outOutputData->mBuffers[p_sys->i_stream_index]
1377 if( p_buffer != NULL )
1379 if( (int)BUFFER.mDataByteSize != (int)p_buffer->i_nb_bytes)
1380 msg_Warn( p_aout, "bytesize: %d nb_bytes: %d", (int)BUFFER.mDataByteSize, (int)p_buffer->i_nb_bytes );
1382 /* move data into output data buffer */
1383 vlc_memcpy( BUFFER.mData, p_buffer->p_buffer, p_buffer->i_nb_bytes );
1384 aout_BufferFree( p_buffer );
1388 vlc_memset( BUFFER.mData, 0, BUFFER.mDataByteSize );
1395 /*****************************************************************************
1396 * HardwareListener: Warns us of changes in the list of registered devices
1397 *****************************************************************************/
1398 static OSStatus HardwareListener( AudioHardwarePropertyID inPropertyID,
1399 void * inClientData )
1401 OSStatus err = noErr;
1402 aout_instance_t *p_aout = (aout_instance_t *)inClientData;
1404 switch( inPropertyID )
1406 case kAudioHardwarePropertyDevices:
1408 /* something changed in the list of devices */
1409 /* We trigger the audio-device's aout_ChannelsRestart callback */
1410 var_Change( p_aout, "audio-device", VLC_VAR_TRIGGER_CALLBACKS, NULL, NULL );
1411 var_Destroy( p_aout, "audio-device" );
1419 /*****************************************************************************
1421 *****************************************************************************/
1422 static OSStatus StreamListener( AudioStreamID inStream,
1424 AudioDevicePropertyID inPropertyID,
1425 void * inClientData )
1427 OSStatus err = noErr;
1428 struct { vlc_mutex_t lock; vlc_cond_t cond; } * w = inClientData;
1430 switch( inPropertyID )
1432 case kAudioStreamPropertyPhysicalFormat:
1433 vlc_mutex_lock( &w->lock );
1434 vlc_cond_signal( &w->cond );
1435 vlc_mutex_unlock( &w->lock );
1444 /*****************************************************************************
1445 * AudioDeviceCallback: Callback triggered when the audio-device variable is changed
1446 *****************************************************************************/
1447 static int AudioDeviceCallback( vlc_object_t *p_this, const char *psz_variable,
1448 vlc_value_t old_val, vlc_value_t new_val, void *param )
1450 aout_instance_t *p_aout = (aout_instance_t *)p_this;
1451 var_Set( p_aout->p_libvlc, "macosx-audio-device", new_val );
1452 msg_Dbg( p_aout, "Set Device: %#x", new_val.i_int );
1453 return aout_ChannelsRestart( p_this, psz_variable, old_val, new_val, param );