1 /*****************************************************************************
2 * auhal.c: AUHAL and Coreaudio output plugin
3 *****************************************************************************
4 * Copyright (C) 2005, 2011 the VideoLAN team
7 * Authors: Derk-Jan Hartman <hartman at videolan dot org>
8 * Felix Paul Kühne <fkuehne at videolan dot org>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software Foundation,
22 * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
23 *****************************************************************************/
25 /*****************************************************************************
27 *****************************************************************************/
33 #include <vlc_common.h>
34 #include <vlc_plugin.h>
35 #include <vlc_dialog.h> // dialog_Fatal
36 #include <vlc_aout.h> // aout_*
38 #include <AudioUnit/AudioUnit.h> // AudioDeviceID
39 #include <AudioToolbox/AudioFormat.h> // AudioFormatGetProperty
42 # define verify_noerr(a) assert((a) == noErr)
45 #define STREAM_FORMAT_MSG( pre, sfm ) \
46 pre "[%f][%4.4s][%u][%u][%u][%u][%u][%u]", \
47 sfm.mSampleRate, (char *)&sfm.mFormatID, \
48 (unsigned int)sfm.mFormatFlags, (unsigned int)sfm.mBytesPerPacket, \
49 (unsigned int)sfm.mFramesPerPacket, (unsigned int)sfm.mBytesPerFrame, \
50 (unsigned int)sfm.mChannelsPerFrame, (unsigned int)sfm.mBitsPerChannel
53 #define STREAM_FORMAT_MSG_FULL( pre, sfm ) \
54 pre ":\nsamplerate: [%"PRIu32"]\nFormatID: [%4.4s]\nFormatFlags: [%"PRIu32"]\nBypesPerPacket: [%"PRIu32"]\nFramesPerPacket: [%"PRIu32"]\nBytesPerFrame: [%u]\nChannelsPerFrame: [%u]\nBitsPerChannel[%u]", \
55 (UInt32)sfm.mSampleRate, (char *)&sfm.mFormatID, \
56 sfm.mFormatFlags, sfm.mBytesPerPacket, \
57 sfm.mFramesPerPacket, sfm.mBytesPerFrame, \
58 sfm.mChannelsPerFrame, sfm.mBitsPerChannel
61 #define FRAMESIZE 2048
62 #define BUFSIZE (FRAMESIZE * 8) * 8
63 #define AOUT_VAR_SPDIF_FLAG 0xf00000
67 * - clean up the debug info
68 * - be better at changing stream setup or devices setup changes while playing.
72 /*****************************************************************************
73 * aout_sys_t: private audio output method descriptor
74 *****************************************************************************
75 * This structure is part of the audio output thread descriptor.
76 * It describes the CoreAudio specific properties of an output thread.
77 *****************************************************************************/
81 AudioDeviceID i_default_dev; /* DeviceID of defaultOutputDevice */
82 AudioDeviceID i_selected_dev; /* DeviceID of the selected device */
83 AudioDeviceIOProcID i_procID; /* DeviceID of current device */
84 UInt32 i_devices; /* Number of CoreAudio Devices */
85 bool b_supports_digital; /* Does the currently selected device support digital mode? */
86 bool b_digital; /* Are we running in digital mode? */
87 mtime_t clock_diff; /* Difference between VLC clock and Device clock */
90 Component au_component; /* The Audiocomponent we use */
91 AudioUnit au_unit; /* The AudioUnit we use */
92 uint8_t p_remainder_buffer[BUFSIZE];
93 uint32_t i_read_bytes;
94 uint32_t i_total_bytes;
96 /* CoreAudio SPDIF mode specific */
97 pid_t i_hog_pid; /* The keep the pid of our hog status */
98 AudioStreamID i_stream_id; /* The StreamID that has a cac3 streamformat */
99 int i_stream_index; /* The index of i_stream_id in an AudioBufferList */
100 AudioStreamBasicDescription stream_format; /* The format we changed the stream to */
101 AudioStreamBasicDescription sfmt_revert; /* The original format of the stream */
102 bool b_revert; /* Wether we need to revert the stream format */
103 bool b_changed_mixing; /* Wether we need to set the mixing mode back */
106 /*****************************************************************************
108 *****************************************************************************/
109 static int Open ( vlc_object_t * );
110 static int OpenAnalog ( audio_output_t * );
111 static int OpenSPDIF ( audio_output_t * );
112 static void Close ( vlc_object_t * );
114 static void Probe ( audio_output_t * );
116 static int AudioDeviceHasOutput ( AudioDeviceID );
117 static int AudioDeviceSupportsDigital( audio_output_t *, AudioDeviceID );
118 static int AudioStreamSupportsDigital( audio_output_t *, AudioStreamID );
119 static int AudioStreamChangeFormat ( audio_output_t *, AudioStreamID, AudioStreamBasicDescription );
121 static OSStatus RenderCallbackAnalog ( vlc_object_t *, AudioUnitRenderActionFlags *, const AudioTimeStamp *,
122 unsigned int, unsigned int, AudioBufferList *);
123 static OSStatus RenderCallbackSPDIF ( AudioDeviceID, const AudioTimeStamp *, const void *, const AudioTimeStamp *,
124 AudioBufferList *, const AudioTimeStamp *, void * );
125 static OSStatus HardwareListener ( AudioObjectID, UInt32, const AudioObjectPropertyAddress *, void * );
126 static OSStatus StreamListener ( AudioObjectID, UInt32, const AudioObjectPropertyAddress *, void * );
127 static int AudioDeviceCallback ( vlc_object_t *, const char *,
128 vlc_value_t, vlc_value_t, void * );
131 /*****************************************************************************
133 *****************************************************************************/
134 #define ADEV_TEXT N_("Audio Device")
135 #define ADEV_LONGTEXT N_("Choose a number corresponding to the number of an " \
136 "audio device, as listed in your 'Audio Device' menu. This device will " \
137 "then be used by default for audio playback.")
140 set_shortname( "auhal" )
141 set_description( N_("HAL AudioUnit output") )
142 set_capability( "audio output", 101 )
143 set_category( CAT_AUDIO )
144 set_subcategory( SUBCAT_AUDIO_AOUT )
145 set_callbacks( Open, Close )
146 add_integer( "macosx-audio-device", 0, ADEV_TEXT, ADEV_LONGTEXT, false )
149 /*****************************************************************************
150 * Open: open macosx audio output
151 *****************************************************************************/
152 static int Open( vlc_object_t * p_this )
154 OSStatus err = noErr;
155 UInt32 i_param_size = 0;
156 struct aout_sys_t *p_sys = NULL;
158 audio_output_t *p_aout = (audio_output_t *)p_this;
160 /* Use int here, to match kAudioDevicePropertyDeviceIsAlive
164 /* Allocate structure */
165 p_aout->sys = malloc( sizeof( aout_sys_t ) );
166 if( p_aout->sys == NULL )
170 p_sys->i_default_dev = 0;
171 p_sys->i_selected_dev = 0;
172 p_sys->i_devices = 0;
173 p_sys->b_supports_digital = false;
174 p_sys->b_digital = false;
175 p_sys->au_component = NULL;
176 p_sys->au_unit = NULL;
177 p_sys->clock_diff = (mtime_t) 0;
178 p_sys->i_read_bytes = 0;
179 p_sys->i_total_bytes = 0;
180 p_sys->i_hog_pid = -1;
181 p_sys->i_stream_id = 0;
182 p_sys->i_stream_index = -1;
183 p_sys->b_revert = false;
184 p_sys->b_changed_mixing = false;
185 memset( p_sys->p_remainder_buffer, 0, sizeof(uint8_t) * BUFSIZE );
187 p_aout->pf_play = aout_PacketPlay;
188 p_aout->pf_pause = aout_PacketPause;
189 p_aout->pf_flush = aout_PacketFlush;
191 aout_FormatPrint( p_aout, "VLC is looking for:", &p_aout->format );
193 /* Persistent device variable */
194 if( var_Type( p_aout->p_libvlc, "macosx-audio-device" ) == 0 )
196 var_CreateGetInteger( p_aout->p_libvlc, "macosx-audio-device" );
199 /* Build a list of devices */
200 if( var_Type( p_aout, "audio-device" ) == 0 )
205 /* What device do we want? */
206 if( var_Get( p_aout, "audio-device", &val ) < 0 )
208 msg_Err( p_aout, "audio-device var does not exist. device probe failed." );
212 p_sys->i_selected_dev = val.i_int & ~AOUT_VAR_SPDIF_FLAG; /* remove SPDIF flag to get the true DeviceID */
213 p_sys->b_supports_digital = ( val.i_int & AOUT_VAR_SPDIF_FLAG ) ? true : false;
214 if( p_sys->b_supports_digital )
215 msg_Dbg( p_aout, "audio device supports digital output" );
217 msg_Dbg( p_aout, "audio device does not support digital output" );
219 /* Check if the desired device is alive and usable */
220 /* TODO: add a callback to the device to alert us if the device dies */
221 i_param_size = sizeof( b_alive );
222 AudioObjectPropertyAddress audioDeviceAliveAddress = { kAudioDevicePropertyDeviceIsAlive,
223 kAudioDevicePropertyScopeOutput,
224 kAudioObjectPropertyElementMaster };
225 err = AudioObjectGetPropertyData( p_sys->i_selected_dev, &audioDeviceAliveAddress, 0, NULL, &i_param_size, &b_alive );
229 /* Be tolerant, only give a warning here */
230 msg_Warn( p_aout, "could not check whether device [0x%x] is alive: %4.4s",
231 (unsigned int)p_sys->i_selected_dev, (char *)&err );
237 msg_Warn( p_aout, "selected audio device is not alive, switching to default device" );
238 p_sys->i_selected_dev = p_sys->i_default_dev;
241 AudioObjectPropertyAddress audioDeviceHogModeAddress = { kAudioDevicePropertyHogMode,
242 kAudioDevicePropertyScopeOutput,
243 kAudioObjectPropertyElementMaster };
244 i_param_size = sizeof( p_sys->i_hog_pid );
245 err = AudioObjectGetPropertyData( p_sys->i_selected_dev, &audioDeviceHogModeAddress, 0, NULL, &i_param_size, &p_sys->i_hog_pid );
248 /* This is not a fatal error. Some drivers simply don't support this property */
249 msg_Warn( p_aout, "could not check whether device is hogged: %4.4s",
251 p_sys->i_hog_pid = -1;
254 if( p_sys->i_hog_pid != -1 && p_sys->i_hog_pid != getpid() )
256 msg_Err( p_aout, "Selected audio device is exclusively in use by another program." );
257 dialog_Fatal( p_aout, _("Audio output failed"), "%s",
258 _("The selected audio output device is exclusively in "
259 "use by another program.") );
263 /* Check for Digital mode or Analog output mode */
264 if( AOUT_FMT_SPDIF( &p_aout->format ) && p_sys->b_supports_digital )
266 if( OpenSPDIF( p_aout ) )
268 msg_Dbg( p_aout, "digital output successfully opened" );
274 if( OpenAnalog( p_aout ) )
276 msg_Dbg( p_aout, "analog output successfully opened" );
282 /* If we reach this, this aout has failed */
283 msg_Err( p_aout, "opening the auhal output failed" );
284 var_Destroy( p_aout, "audio-device" );
289 /*****************************************************************************
290 * Open: open and setup a HAL AudioUnit to do analog (multichannel) audio output
291 *****************************************************************************/
292 static int OpenAnalog( audio_output_t *p_aout )
294 struct aout_sys_t *p_sys = p_aout->sys;
295 OSStatus err = noErr;
296 UInt32 i_param_size = 0;
298 ComponentDescription desc;
299 AudioStreamBasicDescription DeviceFormat;
300 AudioChannelLayout *layout;
301 AudioChannelLayout new_layout;
302 AURenderCallbackStruct input;
304 /* Lets go find our Component */
305 desc.componentType = kAudioUnitType_Output;
306 desc.componentSubType = kAudioUnitSubType_HALOutput;
307 desc.componentManufacturer = kAudioUnitManufacturer_Apple;
308 desc.componentFlags = 0;
309 desc.componentFlagsMask = 0;
311 p_sys->au_component = FindNextComponent( NULL, &desc );
312 if( p_sys->au_component == NULL )
314 msg_Warn( p_aout, "we cannot find our HAL component" );
318 err = OpenAComponent( p_sys->au_component, &p_sys->au_unit );
321 msg_Warn( p_aout, "we cannot open our HAL component" );
325 /* Set the device we will use for this output unit */
326 err = AudioUnitSetProperty( p_sys->au_unit,
327 kAudioOutputUnitProperty_CurrentDevice,
328 kAudioUnitScope_Global,
330 &p_sys->i_selected_dev,
331 sizeof( AudioDeviceID ));
335 msg_Warn( p_aout, "we cannot select the audio device" );
339 /* Get the current format */
340 i_param_size = sizeof(AudioStreamBasicDescription);
342 err = AudioUnitGetProperty( p_sys->au_unit,
343 kAudioUnitProperty_StreamFormat,
344 kAudioUnitScope_Input,
349 if( err != noErr ) return false;
350 else msg_Dbg( p_aout, STREAM_FORMAT_MSG( "current format is: ", DeviceFormat ) );
352 /* Get the channel layout of the device side of the unit (vlc -> unit -> device) */
353 err = AudioUnitGetPropertyInfo( p_sys->au_unit,
354 kAudioDevicePropertyPreferredChannelLayout,
355 kAudioUnitScope_Output,
362 layout = (AudioChannelLayout *)malloc( i_param_size);
364 verify_noerr( AudioUnitGetProperty( p_sys->au_unit,
365 kAudioDevicePropertyPreferredChannelLayout,
366 kAudioUnitScope_Output,
371 /* We need to "fill out" the ChannelLayout, because there are multiple ways that it can be set */
372 if( layout->mChannelLayoutTag == kAudioChannelLayoutTag_UseChannelBitmap)
374 /* bitmap defined channellayout */
375 verify_noerr( AudioFormatGetProperty( kAudioFormatProperty_ChannelLayoutForBitmap,
376 sizeof( UInt32), &layout->mChannelBitmap,
380 else if( layout->mChannelLayoutTag != kAudioChannelLayoutTag_UseChannelDescriptions )
382 /* layouttags defined channellayout */
383 verify_noerr( AudioFormatGetProperty( kAudioFormatProperty_ChannelLayoutForTag,
384 sizeof( AudioChannelLayoutTag ), &layout->mChannelLayoutTag,
389 msg_Dbg( p_aout, "layout of AUHAL has %d channels" , (int)layout->mNumberChannelDescriptions );
391 /* Initialize the VLC core channel count */
392 p_aout->format.i_physical_channels = 0;
393 i_original = p_aout->format.i_original_channels & AOUT_CHAN_PHYSMASK;
395 if( i_original == AOUT_CHAN_CENTER || layout->mNumberChannelDescriptions < 2 )
397 /* We only need Mono or cannot output more than 1 channel */
398 p_aout->format.i_physical_channels = AOUT_CHAN_CENTER;
400 else if( i_original == (AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT) || layout->mNumberChannelDescriptions < 3 )
402 /* We only need Stereo or cannot output more than 2 channels */
403 p_aout->format.i_physical_channels = AOUT_CHAN_RIGHT | AOUT_CHAN_LEFT;
407 /* We want more than stereo and we can do that */
408 for( unsigned int i = 0; i < layout->mNumberChannelDescriptions; i++ )
410 msg_Dbg( p_aout, "this is channel: %d", (int)layout->mChannelDescriptions[i].mChannelLabel );
412 switch( layout->mChannelDescriptions[i].mChannelLabel )
414 case kAudioChannelLabel_Left:
415 p_aout->format.i_physical_channels |= AOUT_CHAN_LEFT;
417 case kAudioChannelLabel_Right:
418 p_aout->format.i_physical_channels |= AOUT_CHAN_RIGHT;
420 case kAudioChannelLabel_Center:
421 p_aout->format.i_physical_channels |= AOUT_CHAN_CENTER;
423 case kAudioChannelLabel_LFEScreen:
424 p_aout->format.i_physical_channels |= AOUT_CHAN_LFE;
426 case kAudioChannelLabel_LeftSurround:
427 p_aout->format.i_physical_channels |= AOUT_CHAN_REARLEFT;
429 case kAudioChannelLabel_RightSurround:
430 p_aout->format.i_physical_channels |= AOUT_CHAN_REARRIGHT;
432 case kAudioChannelLabel_RearSurroundLeft:
433 p_aout->format.i_physical_channels |= AOUT_CHAN_MIDDLELEFT;
435 case kAudioChannelLabel_RearSurroundRight:
436 p_aout->format.i_physical_channels |= AOUT_CHAN_MIDDLERIGHT;
438 case kAudioChannelLabel_CenterSurround:
439 p_aout->format.i_physical_channels |= AOUT_CHAN_REARCENTER;
442 msg_Warn( p_aout, "unrecognized channel form provided by driver: %d", (int)layout->mChannelDescriptions[i].mChannelLabel );
445 if( p_aout->format.i_physical_channels == 0 )
447 p_aout->format.i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
448 msg_Err( p_aout, "You should configure your speaker layout with Audio Midi Setup Utility in /Applications/Utilities. Now using Stereo mode." );
449 dialog_Fatal( p_aout, _("Audio device is not configured"), "%s",
450 _("You should configure your speaker layout with "
451 "the \"Audio Midi Setup\" utility in /Applications/"
452 "Utilities. Stereo mode is being used now.") );
459 msg_Warn( p_aout, "this driver does not support kAudioDevicePropertyPreferredChannelLayout. BAD DRIVER AUTHOR !!!" );
460 p_aout->format.i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
463 msg_Dbg( p_aout, "selected %d physical channels for device output", aout_FormatNbChannels( &p_aout->format ) );
464 msg_Dbg( p_aout, "VLC will output: %s", aout_FormatPrintChannels( &p_aout->format ));
466 memset (&new_layout, 0, sizeof(new_layout));
467 switch( aout_FormatNbChannels( &p_aout->format ) )
470 new_layout.mChannelLayoutTag = kAudioChannelLayoutTag_Mono;
473 new_layout.mChannelLayoutTag = kAudioChannelLayoutTag_Stereo;
476 if( p_aout->format.i_physical_channels & AOUT_CHAN_CENTER )
478 new_layout.mChannelLayoutTag = kAudioChannelLayoutTag_DVD_7; // L R C
480 else if( p_aout->format.i_physical_channels & AOUT_CHAN_LFE )
482 new_layout.mChannelLayoutTag = kAudioChannelLayoutTag_DVD_4; // L R LFE
486 if( p_aout->format.i_physical_channels & ( AOUT_CHAN_CENTER | AOUT_CHAN_LFE ) )
488 new_layout.mChannelLayoutTag = kAudioChannelLayoutTag_DVD_10; // L R C LFE
490 else if( p_aout->format.i_physical_channels & ( AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT ) )
492 new_layout.mChannelLayoutTag = kAudioChannelLayoutTag_DVD_3; // L R Ls Rs
494 else if( p_aout->format.i_physical_channels & ( AOUT_CHAN_CENTER | AOUT_CHAN_REARCENTER ) )
496 new_layout.mChannelLayoutTag = kAudioChannelLayoutTag_DVD_3; // L R C Cs
500 if( p_aout->format.i_physical_channels & ( AOUT_CHAN_CENTER ) )
502 new_layout.mChannelLayoutTag = kAudioChannelLayoutTag_DVD_19; // L R Ls Rs C
504 else if( p_aout->format.i_physical_channels & ( AOUT_CHAN_LFE ) )
506 new_layout.mChannelLayoutTag = kAudioChannelLayoutTag_DVD_18; // L R Ls Rs LFE
510 if( p_aout->format.i_physical_channels & ( AOUT_CHAN_LFE ) )
512 new_layout.mChannelLayoutTag = kAudioChannelLayoutTag_DVD_20; // L R Ls Rs C LFE
516 new_layout.mChannelLayoutTag = kAudioChannelLayoutTag_AudioUnit_6_0; // L R Ls Rs C Cs
520 /* FIXME: This is incorrect. VLC uses the internal ordering: L R Lm Rm Lr Rr C LFE but this is wrong */
521 new_layout.mChannelLayoutTag = kAudioChannelLayoutTag_MPEG_6_1_A; // L R C LFE Ls Rs Cs
524 /* FIXME: This is incorrect. VLC uses the internal ordering: L R Lm Rm Lr Rr C LFE but this is wrong */
525 new_layout.mChannelLayoutTag = kAudioChannelLayoutTag_MPEG_7_1_A; // L R C LFE Ls Rs Lc Rc
529 /* Set up the format to be used */
530 DeviceFormat.mSampleRate = p_aout->format.i_rate;
531 DeviceFormat.mFormatID = kAudioFormatLinearPCM;
533 /* We use float 32. It's the best supported format by both VLC and Coreaudio */
534 p_aout->format.i_format = VLC_CODEC_FL32;
535 DeviceFormat.mFormatFlags = kAudioFormatFlagsNativeFloatPacked;
536 DeviceFormat.mBitsPerChannel = 32;
537 DeviceFormat.mChannelsPerFrame = aout_FormatNbChannels( &p_aout->format );
539 /* Calculate framesizes and stuff */
540 DeviceFormat.mFramesPerPacket = 1;
541 DeviceFormat.mBytesPerFrame = DeviceFormat.mBitsPerChannel * DeviceFormat.mChannelsPerFrame / 8;
542 DeviceFormat.mBytesPerPacket = DeviceFormat.mBytesPerFrame * DeviceFormat.mFramesPerPacket;
544 /* Set the desired format */
545 i_param_size = sizeof(AudioStreamBasicDescription);
546 verify_noerr( AudioUnitSetProperty( p_sys->au_unit,
547 kAudioUnitProperty_StreamFormat,
548 kAudioUnitScope_Input,
553 msg_Dbg( p_aout, STREAM_FORMAT_MSG( "we set the AU format: " , DeviceFormat ) );
555 /* Retrieve actual format */
556 verify_noerr( AudioUnitGetProperty( p_sys->au_unit,
557 kAudioUnitProperty_StreamFormat,
558 kAudioUnitScope_Input,
563 msg_Dbg( p_aout, STREAM_FORMAT_MSG( "the actual set AU format is " , DeviceFormat ) );
565 /* Do the last VLC aout setups */
566 aout_FormatPrepare( &p_aout->format );
567 aout_PacketInit( p_aout, &p_sys->packet, FRAMESIZE );
568 aout_VolumeSoftInit( p_aout );
570 /* set the IOproc callback */
571 input.inputProc = (AURenderCallback) RenderCallbackAnalog;
572 input.inputProcRefCon = p_aout;
574 verify_noerr( AudioUnitSetProperty( p_sys->au_unit,
575 kAudioUnitProperty_SetRenderCallback,
576 kAudioUnitScope_Input,
577 0, &input, sizeof( input ) ) );
579 input.inputProc = (AURenderCallback) RenderCallbackAnalog;
580 input.inputProcRefCon = p_aout;
582 /* Set the new_layout as the layout VLC will use to feed the AU unit */
583 verify_noerr( AudioUnitSetProperty( p_sys->au_unit,
584 kAudioUnitProperty_AudioChannelLayout,
585 kAudioUnitScope_Input,
586 0, &new_layout, sizeof(new_layout) ) );
588 if( new_layout.mNumberChannelDescriptions > 0 )
589 free( new_layout.mChannelDescriptions );
592 verify_noerr( AudioUnitInitialize(p_sys->au_unit) );
594 /* Find the difference between device clock and mdate clock */
595 p_sys->clock_diff = - (mtime_t)
596 AudioConvertHostTimeToNanos( AudioGetCurrentHostTime() ) / 1000;
597 p_sys->clock_diff += mdate();
600 verify_noerr( AudioOutputUnitStart(p_sys->au_unit) );
605 /*****************************************************************************
606 * Setup a encoded digital stream (SPDIF)
607 *****************************************************************************/
608 static int OpenSPDIF( audio_output_t * p_aout )
610 struct aout_sys_t *p_sys = p_aout->sys;
611 OSStatus err = noErr;
612 UInt32 i_param_size = 0, b_mix = 0;
613 Boolean b_writeable = false;
614 AudioStreamID *p_streams = NULL;
616 /* Start doing the SPDIF setup proces */
617 p_sys->b_digital = true;
620 AudioObjectPropertyAddress audioDeviceHogModeAddress = { kAudioDevicePropertyHogMode, kAudioDevicePropertyScopeOutput, kAudioObjectPropertyElementMaster };
621 i_param_size = sizeof( p_sys->i_hog_pid );
622 p_sys->i_hog_pid = getpid() ;
624 err = AudioObjectSetPropertyData( p_sys->i_selected_dev, &audioDeviceHogModeAddress, 0, NULL, i_param_size, &p_sys->i_hog_pid );
628 msg_Err( p_aout, "failed to set hogmode: [%4.4s]", (char *)&err );
632 /* Set mixable to false if we are allowed to */
633 AudioObjectPropertyAddress audioDeviceSupportsMixingAddress = { kAudioDevicePropertySupportsMixing , kAudioDevicePropertyScopeOutput, kAudioObjectPropertyElementMaster };
634 err = AudioObjectIsPropertySettable( p_sys->i_selected_dev, &audioDeviceSupportsMixingAddress, &b_writeable );
635 err = AudioObjectGetPropertyDataSize( p_sys->i_selected_dev, &audioDeviceSupportsMixingAddress, 0, NULL, &i_param_size );
636 err = AudioObjectGetPropertyData( p_sys->i_selected_dev, &audioDeviceSupportsMixingAddress, 0, NULL, &i_param_size, &b_mix );
638 if( !err && b_writeable )
641 err = AudioObjectSetPropertyData( p_sys->i_selected_dev, &audioDeviceSupportsMixingAddress, 0, NULL, i_param_size, &b_mix );
642 p_sys->b_changed_mixing = true;
647 msg_Err( p_aout, "failed to set mixmode: [%4.4s]", (char *)&err );
651 /* Get a list of all the streams on this device */
652 AudioObjectPropertyAddress streamsAddress = { kAudioDevicePropertyStreams, kAudioDevicePropertyScopeOutput, kAudioObjectPropertyElementMaster };
653 err = AudioObjectGetPropertyDataSize( p_sys->i_selected_dev, &streamsAddress, 0, NULL, &i_param_size );
656 msg_Err( p_aout, "could not get number of streams: [%4.4s]", (char *)&err );
660 p_streams = (AudioStreamID *)malloc( i_param_size );
661 if( p_streams == NULL )
664 err = AudioObjectGetPropertyData( p_sys->i_selected_dev, &streamsAddress, 0, NULL, &i_param_size, p_streams );
668 msg_Err( p_aout, "could not get number of streams: [%4.4s]", (char *)&err );
673 AudioObjectPropertyAddress physicalFormatsAddress = { kAudioStreamPropertyAvailablePhysicalFormats, kAudioObjectPropertyScopeGlobal, 0 };
674 for( unsigned i = 0; i < i_param_size / sizeof( AudioStreamID ) && p_sys->i_stream_index < 0 ; i++ )
676 /* Find a stream with a cac3 stream */
677 AudioStreamRangedDescription *p_format_list = NULL;
679 bool b_digital = false;
681 /* Retrieve all the stream formats supported by each output stream */
682 err = AudioObjectGetPropertyDataSize( p_streams[i], &physicalFormatsAddress, 0, NULL, &i_param_size );
685 msg_Err( p_aout, "OpenSPDIF: could not get number of streamformats: [%s] (%i)", (char *)&err, (int32_t)err );
689 i_formats = i_param_size / sizeof( AudioStreamRangedDescription );
690 p_format_list = (AudioStreamRangedDescription *)malloc( i_param_size );
691 if( p_format_list == NULL )
694 err = AudioObjectGetPropertyData( p_streams[i], &physicalFormatsAddress, 0, NULL, &i_param_size, p_format_list );
697 msg_Err( p_aout, "could not get the list of streamformats: [%4.4s]", (char *)&err );
698 free( p_format_list );
702 /* Check if one of the supported formats is a digital format */
703 for( int j = 0; j < i_formats; j++ )
705 if( p_format_list[j].mFormat.mFormatID == 'IAC3' ||
706 p_format_list[j].mFormat.mFormatID == kAudioFormat60958AC3 )
715 /* if this stream supports a digital (cac3) format, then go set it. */
716 int i_requested_rate_format = -1;
717 int i_current_rate_format = -1;
718 int i_backup_rate_format = -1;
720 p_sys->i_stream_id = p_streams[i];
721 p_sys->i_stream_index = i;
723 if( !p_sys->b_revert )
725 /* Retrieve the original format of this stream first if not done so already */
726 i_param_size = sizeof( p_sys->sfmt_revert );
727 err = AudioObjectGetPropertyData( p_sys->i_stream_id, &physicalFormatsAddress, 0, NULL, &i_param_size, &p_sys->sfmt_revert );
730 msg_Err( p_aout, "could not retrieve the original streamformat: [%4.4s]", (char *)&err );
733 p_sys->b_revert = true;
736 for( int j = 0; j < i_formats; j++ )
738 if( p_format_list[j].mFormat.mFormatID == 'IAC3' ||
739 p_format_list[j].mFormat.mFormatID == kAudioFormat60958AC3 )
741 if( p_format_list[j].mFormat.mSampleRate == p_aout->format.i_rate )
743 i_requested_rate_format = j;
746 else if( p_format_list[j].mFormat.mSampleRate == p_sys->sfmt_revert.mSampleRate )
748 i_current_rate_format = j;
752 if( i_backup_rate_format < 0 || p_format_list[j].mFormat.mSampleRate > p_format_list[i_backup_rate_format].mFormat.mSampleRate )
753 i_backup_rate_format = j;
759 if( i_requested_rate_format >= 0 ) /* We prefer to output at the samplerate of the original audio */
760 p_sys->stream_format = p_format_list[i_requested_rate_format].mFormat;
761 else if( i_current_rate_format >= 0 ) /* If not possible, we will try to use the current samplerate of the device */
762 p_sys->stream_format = p_format_list[i_current_rate_format].mFormat;
763 else p_sys->stream_format = p_format_list[i_backup_rate_format].mFormat; /* And if we have to, any digital format will be just fine (highest rate possible) */
765 free( p_format_list );
769 msg_Dbg( p_aout, STREAM_FORMAT_MSG( "original stream format: ", p_sys->sfmt_revert ) );
771 if( !AudioStreamChangeFormat( p_aout, p_sys->i_stream_id, p_sys->stream_format ) )
774 /* Set the format flags */
775 if( p_sys->stream_format.mFormatFlags & kAudioFormatFlagIsBigEndian )
776 p_aout->format.i_format = VLC_CODEC_SPDIFB;
778 p_aout->format.i_format = VLC_CODEC_SPDIFL;
779 p_aout->format.i_bytes_per_frame = AOUT_SPDIF_SIZE;
780 p_aout->format.i_frame_length = A52_FRAME_NB;
781 p_aout->format.i_rate = (unsigned int)p_sys->stream_format.mSampleRate;
782 aout_FormatPrepare( &p_aout->format );
783 aout_PacketInit( p_aout, &p_sys->packet, A52_FRAME_NB );
784 aout_VolumeNoneInit( p_aout );
786 /* Add IOProc callback */
787 err = AudioDeviceCreateIOProcID( p_sys->i_selected_dev,
788 (AudioDeviceIOProc)RenderCallbackSPDIF,
793 msg_Err( p_aout, "AudioDeviceCreateIOProcID failed: [%4.4s]", (char *)&err );
794 aout_PacketDestroy (p_aout);
798 /* Check for the difference between the Device clock and mdate */
799 p_sys->clock_diff = - (mtime_t)
800 AudioConvertHostTimeToNanos( AudioGetCurrentHostTime() ) / 1000;
801 p_sys->clock_diff += mdate();
804 err = AudioDeviceStart( p_sys->i_selected_dev, p_sys->i_procID );
807 msg_Err( p_aout, "AudioDeviceStart failed: [%4.4s]", (char *)&err );
809 err = AudioDeviceDestroyIOProcID( p_sys->i_selected_dev,
813 msg_Err( p_aout, "AudioDeviceDestroyIOProcID failed: [%4.4s]", (char *)&err );
815 aout_PacketDestroy (p_aout);
823 /*****************************************************************************
824 * Close: Close HAL AudioUnit
825 *****************************************************************************/
826 static void Close( vlc_object_t * p_this )
828 audio_output_t *p_aout = (audio_output_t *)p_this;
829 struct aout_sys_t *p_sys = p_aout->sys;
830 OSStatus err = noErr;
831 UInt32 i_param_size = 0;
835 verify_noerr( AudioOutputUnitStop( p_sys->au_unit ) );
836 verify_noerr( AudioUnitUninitialize( p_sys->au_unit ) );
837 verify_noerr( CloseComponent( p_sys->au_unit ) );
840 if( p_sys->b_digital )
843 err = AudioDeviceStop( p_sys->i_selected_dev,
847 msg_Err( p_aout, "AudioDeviceStop failed: [%4.4s]", (char *)&err );
850 /* Remove IOProc callback */
851 err = AudioDeviceDestroyIOProcID( p_sys->i_selected_dev,
855 msg_Err( p_aout, "AudioDeviceDestroyIOProcID failed: [%4.4s]", (char *)&err );
858 if( p_sys->b_revert )
860 AudioStreamChangeFormat( p_aout, p_sys->i_stream_id, p_sys->sfmt_revert );
863 if( p_sys->b_changed_mixing && p_sys->sfmt_revert.mFormatID != kAudioFormat60958AC3 )
867 /* Revert mixable to true if we are allowed to */
868 AudioObjectPropertyAddress audioDeviceSupportsMixingAddress = { kAudioDevicePropertySupportsMixing , kAudioDevicePropertyScopeOutput, kAudioObjectPropertyElementMaster };
869 err = AudioObjectIsPropertySettable( p_sys->i_selected_dev, &audioDeviceSupportsMixingAddress, &b_writeable );
870 err = AudioObjectGetPropertyData( p_sys->i_selected_dev, &audioDeviceSupportsMixingAddress, 0, NULL, &i_param_size, &b_mix );
872 if( !err && b_writeable )
874 msg_Dbg( p_aout, "mixable is: %d", b_mix );
876 err = AudioObjectSetPropertyData( p_sys->i_selected_dev, &audioDeviceSupportsMixingAddress, 0, NULL, i_param_size, &b_mix );
881 msg_Err( p_aout, "failed to set mixmode: [%4.4s]", (char *)&err );
886 AudioObjectPropertyAddress audioDevicesAddress = { kAudioHardwarePropertyDevices, kAudioDevicePropertyScopeOutput, kAudioObjectPropertyElementMaster };
887 err = AudioObjectRemovePropertyListener( kAudioObjectSystemObject, &audioDevicesAddress, HardwareListener, NULL );
891 msg_Err( p_aout, "AudioHardwareRemovePropertyListener failed: [%4.4s]", (char *)&err );
894 if( p_sys->i_hog_pid == getpid() )
896 p_sys->i_hog_pid = -1;
897 i_param_size = sizeof( p_sys->i_hog_pid );
898 AudioObjectPropertyAddress audioDeviceHogModeAddress = { kAudioDevicePropertyHogMode,
899 kAudioDevicePropertyScopeOutput,
900 kAudioObjectPropertyElementMaster };
901 err = AudioObjectSetPropertyData( p_sys->i_selected_dev, &audioDeviceHogModeAddress, 0, NULL, i_param_size, &p_sys->i_hog_pid );
902 if( err != noErr ) msg_Err( p_aout, "Could not release hogmode: [%4.4s]", (char *)&err );
905 aout_PacketDestroy( p_aout );
909 /*****************************************************************************
910 * Probe: Check which devices the OS has, and add them to our audio-device menu
911 *****************************************************************************/
912 static void Probe( audio_output_t * p_aout )
914 OSStatus err = noErr;
915 UInt32 i_param_size = 0;
916 AudioDeviceID devid_def = 0;
917 AudioDeviceID *p_devices = NULL;
918 vlc_value_t val, text;
920 struct aout_sys_t *p_sys = p_aout->sys;
922 /* Get number of devices */
923 AudioObjectPropertyAddress audioDevicesAddress = { kAudioHardwarePropertyDevices, kAudioDevicePropertyScopeOutput, kAudioObjectPropertyElementMaster };
924 err = AudioObjectGetPropertyDataSize(kAudioObjectSystemObject, &audioDevicesAddress, 0, NULL, &i_param_size);
927 msg_Err( p_aout, "Could not get number of devices: [%s]", (char *)&err );
931 p_sys->i_devices = i_param_size / sizeof( AudioDeviceID );
933 if( p_sys->i_devices < 1 )
935 msg_Err( p_aout, "No audio output devices were found." );
938 msg_Dbg( p_aout, "found %u audio device(s)", (unsigned)p_sys->i_devices );
940 /* Allocate DeviceID array */
941 p_devices = (AudioDeviceID*)malloc( sizeof(AudioDeviceID) * p_sys->i_devices );
942 if( p_devices == NULL )
945 /* Populate DeviceID array */
946 err = AudioObjectGetPropertyData( kAudioObjectSystemObject, &audioDevicesAddress, 0, NULL, &i_param_size, p_devices );
949 msg_Err( p_aout, "could not get the device IDs: [%s]", (char *)&err );
953 /* Find the ID of the default Device */
954 AudioObjectPropertyAddress defaultDeviceAddress = { kAudioHardwarePropertyDefaultOutputDevice, kAudioDevicePropertyScopeOutput, kAudioObjectPropertyElementMaster };
955 i_param_size = sizeof( AudioDeviceID );
956 err= AudioObjectGetPropertyData( kAudioObjectSystemObject, &defaultDeviceAddress, 0, NULL, &i_param_size, &devid_def );
959 msg_Err( p_aout, "could not get default audio device: [%s]", (char *)&err );
962 p_sys->i_default_dev = devid_def;
964 var_Create( p_aout, "audio-device", VLC_VAR_INTEGER|VLC_VAR_HASCHOICE );
965 text.psz_string = (char*)_("Audio Device");
966 var_Change( p_aout, "audio-device", VLC_VAR_SETTEXT, &text, NULL );
968 AudioObjectPropertyAddress deviceNameAddress = { kAudioDevicePropertyDeviceName, kAudioDevicePropertyScopeOutput, kAudioObjectPropertyElementMaster };
970 for( unsigned int i = 0; i < p_sys->i_devices; i++ )
975 /* Retrieve the length of the device name */
976 err = AudioObjectGetPropertyDataSize( p_devices[i], &deviceNameAddress, 0, NULL, &i_param_size );
977 if( err ) goto error;
979 /* Retrieve the name of the device */
980 psz_name = (char *)malloc( i_param_size );
981 err = AudioObjectGetPropertyData( p_devices[i], &deviceNameAddress, 0, NULL, &i_param_size, psz_name );
982 if( err ) goto error;
984 msg_Dbg( p_aout, "DevID: %u DevName: %s", (unsigned)p_devices[i], psz_name );
986 if( !AudioDeviceHasOutput( p_devices[i]) )
988 msg_Dbg( p_aout, "this device is INPUT only. skipping..." );
993 /* Add the menu entries */
994 val.i_int = (int)p_devices[i];
995 text.psz_string = psz_name;
996 var_Change( p_aout, "audio-device", VLC_VAR_ADDCHOICE, &val, &text );
997 text.psz_string = NULL;
998 if( p_sys->i_default_dev == p_devices[i] )
1000 /* The default device is the selected device normally */
1001 var_Change( p_aout, "audio-device", VLC_VAR_SETDEFAULT, &val, NULL );
1002 var_Set( p_aout, "audio-device", val );
1005 if( AudioDeviceSupportsDigital( p_aout, p_devices[i] ) )
1007 val.i_int = (int)p_devices[i] | AOUT_VAR_SPDIF_FLAG;
1008 if( asprintf( &text.psz_string, _("%s (Encoded Output)"), psz_name ) != -1 )
1010 var_Change( p_aout, "audio-device", VLC_VAR_ADDCHOICE, &val, &text );
1011 free( text.psz_string );
1012 if( p_sys->i_default_dev == p_devices[i]
1013 && var_InheritBool( p_aout, "spdif" ) )
1015 /* We selected to prefer SPDIF output if available
1016 * then this "dummy" entry should be selected */
1017 var_Change( p_aout, "audio-device", VLC_VAR_SETDEFAULT, &val, NULL );
1018 var_Set( p_aout, "audio-device", val );
1026 /* If a device is already "preselected", then use this device */
1027 var_Get( p_aout->p_libvlc, "macosx-audio-device", &val );
1030 var_Change( p_aout, "audio-device", VLC_VAR_SETDEFAULT, &val, NULL );
1031 var_Set( p_aout, "audio-device", val );
1034 /* If we change the device we want to use, we should renegotiate the audio chain */
1035 var_AddCallback( p_aout, "audio-device", AudioDeviceCallback, NULL );
1037 /* Attach a Listener so that we are notified of a change in the Device setup */
1038 err = AudioObjectAddPropertyListener( kAudioObjectSystemObject, &audioDevicesAddress, HardwareListener, (void *)p_aout );
1046 msg_Warn( p_aout, "audio device already in use" );
1051 /*****************************************************************************
1052 * AudioDeviceHasOutput: Checks if the Device actually provides any outputs at all
1053 *****************************************************************************/
1054 static int AudioDeviceHasOutput( AudioDeviceID i_dev_id )
1058 AudioObjectPropertyAddress streamsAddress = { kAudioDevicePropertyStreams, kAudioDevicePropertyScopeOutput, kAudioObjectPropertyElementMaster };
1059 verify_noerr( AudioObjectGetPropertyDataSize( i_dev_id, &streamsAddress, 0, NULL, &dataSize ) );
1060 if (dataSize == 0) return FALSE;
1065 /*****************************************************************************
1066 * AudioDeviceSupportsDigital: Check i_dev_id for digital stream support.
1067 *****************************************************************************/
1068 static int AudioDeviceSupportsDigital( audio_output_t *p_aout, AudioDeviceID i_dev_id )
1070 OSStatus err = noErr;
1071 UInt32 i_param_size = 0;
1072 AudioStreamID *p_streams = NULL;
1073 bool b_return = false;
1075 /* Retrieve all the output streams */
1076 AudioObjectPropertyAddress streamsAddress = { kAudioDevicePropertyStreams, kAudioDevicePropertyScopeOutput, kAudioObjectPropertyElementMaster };
1077 err = AudioObjectGetPropertyDataSize( i_dev_id, &streamsAddress, 0, NULL, &i_param_size );
1080 msg_Err( p_aout, "could not get number of streams: [%s] (%i)", (char *)&err, (int32_t)err );
1084 p_streams = (AudioStreamID *)malloc( i_param_size );
1085 if( p_streams == NULL )
1088 err = AudioObjectGetPropertyData( i_dev_id, &streamsAddress, 0, NULL, &i_param_size, p_streams );
1091 msg_Err( p_aout, "could not get list of streams: [%s]", (char *)&err );
1095 for( unsigned i = 0; i < i_param_size / sizeof( AudioStreamID ); i++ )
1097 if( AudioStreamSupportsDigital( p_aout, p_streams[i] ) )
1105 /*****************************************************************************
1106 * AudioStreamSupportsDigital: Check i_stream_id for digital stream support.
1107 *****************************************************************************/
1108 static int AudioStreamSupportsDigital( audio_output_t *p_aout, AudioStreamID i_stream_id )
1110 OSStatus err = noErr;
1111 UInt32 i_param_size = 0;
1112 AudioStreamRangedDescription *p_format_list = NULL;
1114 bool b_return = false;
1116 /* Retrieve all the stream formats supported by each output stream */
1117 AudioObjectPropertyAddress physicalFormatsAddress = { kAudioStreamPropertyAvailablePhysicalFormats, kAudioObjectPropertyScopeGlobal, 0 };
1118 err = AudioObjectGetPropertyDataSize( i_stream_id, &physicalFormatsAddress, 0, NULL, &i_param_size );
1121 msg_Err( p_aout, "could not get number of streamformats: [%s] (%i)", (char *)&err, (int32_t)err );
1125 i_formats = i_param_size / sizeof( AudioStreamRangedDescription );
1126 msg_Dbg( p_aout, "found %i stream formats", i_formats );
1128 p_format_list = (AudioStreamRangedDescription *)malloc( i_param_size );
1129 if( p_format_list == NULL )
1132 err = AudioObjectGetPropertyData( i_stream_id, &physicalFormatsAddress, 0, NULL, &i_param_size, p_format_list );
1135 msg_Err( p_aout, "could not get the list of streamformats: [%4.4s]", (char *)&err );
1136 free( p_format_list);
1137 p_format_list = NULL;
1141 for( int i = 0; i < i_formats; i++ )
1143 msg_Dbg( p_aout, STREAM_FORMAT_MSG( "supported format: ", p_format_list[i].mFormat ) );
1145 if( p_format_list[i].mFormat.mFormatID == 'IAC3' ||
1146 p_format_list[i].mFormat.mFormatID == kAudioFormat60958AC3 )
1152 free( p_format_list );
1156 /*****************************************************************************
1157 * AudioStreamChangeFormat: Change i_stream_id to change_format
1158 *****************************************************************************/
1159 static int AudioStreamChangeFormat( audio_output_t *p_aout, AudioStreamID i_stream_id, AudioStreamBasicDescription change_format )
1161 OSStatus err = noErr;
1162 UInt32 i_param_size = 0;
1164 AudioObjectPropertyAddress physicalFormatAddress = { kAudioStreamPropertyPhysicalFormat, kAudioDevicePropertyScopeOutput, kAudioObjectPropertyElementMaster };
1166 struct { vlc_mutex_t lock; vlc_cond_t cond; } w;
1168 msg_Dbg( p_aout, STREAM_FORMAT_MSG( "setting stream format: ", change_format ) );
1170 /* Condition because SetProperty is asynchronious */
1171 vlc_cond_init( &w.cond );
1172 vlc_mutex_init( &w.lock );
1173 vlc_mutex_lock( &w.lock );
1175 /* Install the callback */
1176 err = AudioObjectAddPropertyListener( i_stream_id, &physicalFormatAddress, StreamListener, (void *)&w );
1179 msg_Err( p_aout, "AudioObjectAddPropertyListener for kAudioStreamPropertyPhysicalFormat failed: [%4.4s]", (char *)&err );
1183 /* change the format */
1184 err = AudioObjectSetPropertyData( i_stream_id, &physicalFormatAddress, 0, NULL, sizeof( AudioStreamBasicDescription ),
1188 msg_Err( p_aout, "could not set the stream format: [%4.4s]", (char *)&err );
1192 /* The AudioStreamSetProperty is not only asynchronious (requiring the locks)
1193 * it is also not atomic in its behaviour.
1194 * Therefore we check 5 times before we really give up.
1195 * FIXME: failing isn't actually implemented yet. */
1196 for( int i = 0; i < 5; i++ )
1198 AudioStreamBasicDescription actual_format;
1199 mtime_t timeout = mdate() + 500000;
1201 if( vlc_cond_timedwait( &w.cond, &w.lock, timeout ) )
1203 msg_Dbg( p_aout, "reached timeout" );
1206 i_param_size = sizeof( AudioStreamBasicDescription );
1207 err = AudioObjectGetPropertyData( i_stream_id, &physicalFormatAddress, 0, NULL, &i_param_size, &actual_format );
1209 msg_Dbg( p_aout, STREAM_FORMAT_MSG( "actual format in use: ", actual_format ) );
1210 if( actual_format.mSampleRate == change_format.mSampleRate &&
1211 actual_format.mFormatID == change_format.mFormatID &&
1212 actual_format.mFramesPerPacket == change_format.mFramesPerPacket )
1214 /* The right format is now active */
1217 /* We need to check again */
1220 /* Removing the property listener */
1221 err = AudioObjectRemovePropertyListener( i_stream_id, &physicalFormatAddress, StreamListener, NULL );
1224 msg_Err( p_aout, "AudioStreamRemovePropertyListener failed: [%4.4s]", (char *)&err );
1228 /* Destroy the lock and condition */
1229 vlc_mutex_unlock( &w.lock );
1230 vlc_mutex_destroy( &w.lock );
1231 vlc_cond_destroy( &w.cond );
1236 /*****************************************************************************
1237 * RenderCallbackAnalog: This function is called everytime the AudioUnit wants
1238 * us to provide some more audio data.
1239 * Don't print anything during normal playback, calling blocking function from
1240 * this callback is not allowed.
1241 *****************************************************************************/
1242 static OSStatus RenderCallbackAnalog( vlc_object_t *_p_aout,
1243 AudioUnitRenderActionFlags *ioActionFlags,
1244 const AudioTimeStamp *inTimeStamp,
1245 unsigned int inBusNumber,
1246 unsigned int inNumberFrames,
1247 AudioBufferList *ioData )
1249 AudioTimeStamp host_time;
1250 mtime_t current_date = 0;
1251 uint32_t i_mData_bytes = 0;
1253 audio_output_t * p_aout = (audio_output_t *)_p_aout;
1254 struct aout_sys_t * p_sys = p_aout->sys;
1256 VLC_UNUSED(ioActionFlags);
1257 VLC_UNUSED(inBusNumber);
1258 VLC_UNUSED(inNumberFrames);
1260 host_time.mFlags = kAudioTimeStampHostTimeValid;
1261 AudioDeviceTranslateTime( p_sys->i_selected_dev, inTimeStamp, &host_time );
1263 /* Check for the difference between the Device clock and mdate */
1264 p_sys->clock_diff = - (mtime_t)
1265 AudioConvertHostTimeToNanos( AudioGetCurrentHostTime() ) / 1000;
1266 p_sys->clock_diff += mdate();
1268 current_date = p_sys->clock_diff +
1269 AudioConvertHostTimeToNanos( host_time.mHostTime ) / 1000;
1270 //- ((mtime_t) 1000000 / p_aout->format.i_rate * 31 ); // 31 = Latency in Frames. retrieve somewhere
1272 if( ioData == NULL && ioData->mNumberBuffers < 1 )
1274 msg_Err( p_aout, "no iodata or buffers");
1277 if( ioData->mNumberBuffers > 1 )
1278 msg_Err( p_aout, "well this is weird. seems like there is more than one buffer..." );
1281 if( p_sys->i_total_bytes > 0 )
1283 i_mData_bytes = __MIN( p_sys->i_total_bytes - p_sys->i_read_bytes, ioData->mBuffers[0].mDataByteSize );
1284 vlc_memcpy( ioData->mBuffers[0].mData,
1285 &p_sys->p_remainder_buffer[p_sys->i_read_bytes],
1287 p_sys->i_read_bytes += i_mData_bytes;
1288 current_date += (mtime_t) ( (mtime_t) 1000000 / p_aout->format.i_rate ) *
1289 ( i_mData_bytes / 4 / aout_FormatNbChannels( &p_aout->format ) ); // 4 is fl32 specific
1291 if( p_sys->i_read_bytes >= p_sys->i_total_bytes )
1292 p_sys->i_read_bytes = p_sys->i_total_bytes = 0;
1295 while( i_mData_bytes < ioData->mBuffers[0].mDataByteSize )
1297 /* We don't have enough data yet */
1298 aout_buffer_t * p_buffer;
1299 p_buffer = aout_PacketNext( p_aout, current_date );
1301 if( p_buffer != NULL )
1303 uint32_t i_second_mData_bytes = __MIN( p_buffer->i_buffer, ioData->mBuffers[0].mDataByteSize - i_mData_bytes );
1305 vlc_memcpy( (uint8_t *)ioData->mBuffers[0].mData + i_mData_bytes,
1306 p_buffer->p_buffer, i_second_mData_bytes );
1307 i_mData_bytes += i_second_mData_bytes;
1309 if( i_mData_bytes >= ioData->mBuffers[0].mDataByteSize )
1311 p_sys->i_total_bytes = p_buffer->i_buffer - i_second_mData_bytes;
1312 vlc_memcpy( p_sys->p_remainder_buffer,
1313 &p_buffer->p_buffer[i_second_mData_bytes],
1314 p_sys->i_total_bytes );
1315 aout_BufferFree( p_buffer );
1320 /* update current_date */
1321 current_date += (mtime_t) ( (mtime_t) 1000000 / p_aout->format.i_rate ) *
1322 ( i_second_mData_bytes / 4 / aout_FormatNbChannels( &p_aout->format ) ); // 4 is fl32 specific
1324 aout_BufferFree( p_buffer );
1328 vlc_memset( (uint8_t *)ioData->mBuffers[0].mData +i_mData_bytes,
1329 0,ioData->mBuffers[0].mDataByteSize - i_mData_bytes );
1330 i_mData_bytes += ioData->mBuffers[0].mDataByteSize - i_mData_bytes;
1336 /*****************************************************************************
1337 * RenderCallbackSPDIF: callback for SPDIF audio output
1338 *****************************************************************************/
1339 static OSStatus RenderCallbackSPDIF( AudioDeviceID inDevice,
1340 const AudioTimeStamp * inNow,
1341 const void * inInputData,
1342 const AudioTimeStamp * inInputTime,
1343 AudioBufferList * outOutputData,
1344 const AudioTimeStamp * inOutputTime,
1345 void * threadGlobals )
1347 aout_buffer_t * p_buffer;
1348 mtime_t current_date;
1350 audio_output_t * p_aout = (audio_output_t *)threadGlobals;
1351 struct aout_sys_t * p_sys = p_aout->sys;
1353 VLC_UNUSED(inDevice);
1354 VLC_UNUSED(inInputData);
1355 VLC_UNUSED(inInputTime);
1357 /* Check for the difference between the Device clock and mdate */
1358 p_sys->clock_diff = - (mtime_t)
1359 AudioConvertHostTimeToNanos( inNow->mHostTime ) / 1000;
1360 p_sys->clock_diff += mdate();
1362 current_date = p_sys->clock_diff +
1363 AudioConvertHostTimeToNanos( inOutputTime->mHostTime ) / 1000;
1364 //- ((mtime_t) 1000000 / p_aout->format.i_rate * 31 ); // 31 = Latency in Frames. retrieve somewhere
1366 p_buffer = aout_PacketNext( p_aout, current_date );
1368 #define BUFFER outOutputData->mBuffers[p_sys->i_stream_index]
1369 if( p_buffer != NULL )
1371 if( (int)BUFFER.mDataByteSize != (int)p_buffer->i_buffer)
1372 msg_Warn( p_aout, "bytesize: %d nb_bytes: %d", (int)BUFFER.mDataByteSize, (int)p_buffer->i_buffer );
1374 /* move data into output data buffer */
1375 vlc_memcpy( BUFFER.mData, p_buffer->p_buffer, p_buffer->i_buffer );
1376 aout_BufferFree( p_buffer );
1380 vlc_memset( BUFFER.mData, 0, BUFFER.mDataByteSize );
1387 /*****************************************************************************
1388 * HardwareListener: Warns us of changes in the list of registered devices
1389 *****************************************************************************/
1390 static OSStatus HardwareListener( AudioObjectID inObjectID, UInt32 inNumberAddresses, const AudioObjectPropertyAddress inAddresses[], void*inClientData)
1392 OSStatus err = noErr;
1393 audio_output_t *p_aout = (audio_output_t *)inClientData;
1394 VLC_UNUSED(inObjectID);
1396 for ( unsigned int i = 0; i < inNumberAddresses; i++ )
1398 if( inAddresses[i].mSelector == kAudioHardwarePropertyDevices )
1400 /* something changed in the list of devices */
1401 /* We trigger the audio-device's aout_ChannelsRestart callback */
1402 var_TriggerCallback( p_aout, "audio-device" );
1403 var_Destroy( p_aout, "audio-device" );
1410 /*****************************************************************************
1412 *****************************************************************************/
1413 static OSStatus StreamListener( AudioObjectID inObjectID, UInt32 inNumberAddresses, const AudioObjectPropertyAddress inAddresses[], void*inClientData)
1415 OSStatus err = noErr;
1416 struct { vlc_mutex_t lock; vlc_cond_t cond; } * w = inClientData;
1418 VLC_UNUSED(inObjectID);
1420 for ( unsigned int i = 0; i < inNumberAddresses; i++ )
1422 if( inAddresses[i].mSelector == kAudioStreamPropertyPhysicalFormat )
1424 vlc_mutex_lock( &w->lock );
1425 vlc_cond_signal( &w->cond );
1426 vlc_mutex_unlock( &w->lock );
1432 /*****************************************************************************
1433 * AudioDeviceCallback: Callback triggered when the audio-device variable is changed
1434 *****************************************************************************/
1435 static int AudioDeviceCallback( vlc_object_t *p_this, const char *psz_variable,
1436 vlc_value_t old_val, vlc_value_t new_val, void *param )
1438 audio_output_t *p_aout = (audio_output_t *)p_this;
1439 var_Set( p_aout->p_libvlc, "macosx-audio-device", new_val );
1440 msg_Dbg( p_aout, "Set Device: %#"PRIx64, new_val.i_int );
1441 return aout_ChannelsRestart( p_this, psz_variable, old_val, new_val, param );