git.sesse.net Git - vlc/blob - modules/audio_output/auhal.c

   1 /*****************************************************************************
   2  * auhal.c: AUHAL output plugin
   3  *****************************************************************************
   4  * Copyright (C) 2005 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Derk-Jan Hartman <hartman at videolan dot org>
   8  *
   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.
  13  *
  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.
  18  *
  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., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  22  *****************************************************************************/
  23
  24 /*****************************************************************************
  25  * Preamble
  26  *****************************************************************************/
  27 #include <string.h>
  28 #include <stdlib.h>
  29 #include <unistd.h>
  30
  31 #include <vlc/vlc.h>
  32 #include <vlc/aout.h>
  33
  34 #include "aout_internal.h"
  35
  36 #include <CoreAudio/CoreAudio.h>
  37 #include <CoreAudio/CoreAudioTypes.h>
  38 #include <AudioUnit/AudioUnitProperties.h>
  39 #include <AudioUnit/AudioUnitParameters.h>
  40 #include <AudioUnit/AudioOutputUnit.h>
  41 #include <AudioToolbox/AudioFormat.h>
  42
  43 #define STREAM_FORMAT_MSG( pre, sfm ) \
  44     pre "[%ld][%4.4s][%ld][%ld][%ld][%ld][%ld][%ld]", \
  45     (UInt32)sfm.mSampleRate, (char *)&sfm.mFormatID, \
  46     sfm.mFormatFlags, sfm.mBytesPerPacket, \
  47     sfm.mFramesPerPacket, sfm.mBytesPerFrame, \
  48     sfm.mChannelsPerFrame, sfm.mBitsPerChannel
  49
  50 #define STREAM_FORMAT_MSG_FULL( pre, sfm ) \
  51     pre ":\nsamplerate: [%ld]\nFormatID: [%4.4s]\nFormatFlags: [%ld]\nBypesPerPacket: [%ld]\nFramesPerPacket: [%ld]\nBytesPerFrame: [%ld]\nChannelsPerFrame: [%ld]\nBitsPerChannel[%ld]", \
  52     (UInt32)sfm.mSampleRate, (char *)&sfm.mFormatID, \
  53     sfm.mFormatFlags, sfm.mBytesPerPacket, \
  54     sfm.mFramesPerPacket, sfm.mBytesPerFrame, \
  55     sfm.mChannelsPerFrame, sfm.mBitsPerChannel
  56
  57 #define BUFSIZE 0xffffff
  58 #define AOUT_VAR_SPDIF_FLAG 0xf00000
  59
  60 /*
  61  * TODO:
  62  * - clean up the debug info
  63  * - clean up C99'isms
  64  * - be better at changing stream setup or devices setup changes while playing.
  65  */
  66
  67 /*****************************************************************************
  68  * aout_sys_t: private audio output method descriptor
  69  *****************************************************************************
  70  * This structure is part of the audio output thread descriptor.
  71  * It describes the CoreAudio specific properties of an output thread.
  72  *****************************************************************************/
  73 struct aout_sys_t
  74 {
  75     AudioDeviceID               i_default_dev;  /* Keeps DeviceID of defaultOutputDevice */
  76     AudioDeviceID               i_selected_dev; /* Keeps DeviceID of the selected device */
  77     UInt32                      i_devices;      /* Number of CoreAudio Devices */
  78     vlc_bool_t                  b_supports_digital;/* Does the currently selected device support digital mode? */
  79     vlc_bool_t                  b_digital;      /* Are we running in digital mode? */
  80     mtime_t                     clock_diff;     /* Difference between VLC clock and Device clock */
  81     /* AUHAL specific */
  82     Component                   au_component;   /* The Audiocomponent we use */
  83     AudioUnit                   au_unit;        /* The AudioUnit we use */
  84     uint8_t                     p_remainder_buffer[BUFSIZE];
  85     uint32_t                    i_read_bytes;
  86     uint32_t                    i_total_bytes;
  87     /* CoreAudio SPDIF mode specific */
  88     pid_t                       i_hog_pid;      /* The keep the pid of our hog status */
  89     AudioStreamID               i_stream_id;    /* The StreamID that has a cac3 streamformat */
  90     int                         i_stream_index; /* The index of i_stream_id in an AudioBufferList */
  91     AudioStreamBasicDescription stream_format;  /* The format we changed the to */
  92     AudioStreamBasicDescription sfmt_revert;    /* The original format of the stream */
  93     vlc_bool_t                  b_revert;       /* Wether we need to revert the stream format */
  94     vlc_bool_t                  b_changed_mixing;/* Wether we need to set the mixing mode back */
  95 };
  96
  97 /*****************************************************************************
  98  * Local prototypes.
  99  *****************************************************************************/
 100 static int      Open                    ( vlc_object_t * );
 101 static int      OpenAnalog              ( aout_instance_t * );
 102 static int      OpenSPDIF               ( aout_instance_t * );
 103 static void     Close                   ( vlc_object_t * );
 104
 105 static void     Play                    ( aout_instance_t * );
 106 static void     Probe                   ( aout_instance_t * );
 107
 108 static int      AudioDeviceHasOutput    ( AudioDeviceID );
 109 static int      AudioDeviceSupportsDigital( aout_instance_t *, AudioDeviceID );
 110 static int      AudioStreamSupportsDigital( aout_instance_t *, AudioStreamID );
 111
 112 static OSStatus RenderCallbackAnalog    ( vlc_object_t *, AudioUnitRenderActionFlags *, const AudioTimeStamp *,
 113                                           unsigned int, unsigned int, AudioBufferList *);
 114 static OSStatus RenderCallbackSPDIF     ( AudioDeviceID, const AudioTimeStamp *, const void *, const AudioTimeStamp *,
 115                                           AudioBufferList *, const AudioTimeStamp *, void * );
 116 static OSStatus HardwareListener        ( AudioHardwarePropertyID, void *);
 117 static OSStatus StreamListener          ( AudioStreamID, UInt32,
 118                                           AudioDevicePropertyID, void * );
 119 static int      AudioDeviceCallback     ( vlc_object_t *, const char *,
 120                                           vlc_value_t, vlc_value_t, void * );
 121
 122
 123 /*****************************************************************************
 124  * Module descriptor
 125  *****************************************************************************/
 126 #define ADEV_TEXT N_("Audio Device")
 127 #define ADEV_LONGTEXT N_("Choose a number corresponding to the number of an " \
 128     "audio device, as listed in your 'Audio Device' menu. This device will " \
 129     "then be used by default for audio playback.")
 130
 131 vlc_module_begin();
 132     set_shortname( "auhal" );
 133     set_description( _("HAL AudioUnit output") );
 134     set_capability( "audio output", 101 );
 135     set_category( CAT_AUDIO );
 136     set_subcategory( SUBCAT_AUDIO_AOUT );
 137     set_callbacks( Open, Close );
 138     add_integer( "macosx-audio-device", 0, NULL, ADEV_TEXT, ADEV_LONGTEXT, VLC_FALSE );
 139 vlc_module_end();
 140
 141 /*****************************************************************************
 142  * Open: open macosx audio output
 143  *****************************************************************************/
 144 static int Open( vlc_object_t * p_this )
 145 {
 146     OSStatus                err = noErr;
 147     UInt32                  i_param_size = 0;
 148     struct aout_sys_t       *p_sys = NULL;
 149     vlc_bool_t              b_alive = VLC_FALSE;
 150     vlc_value_t             val;
 151     aout_instance_t         *p_aout = (aout_instance_t *)p_this;
 152
 153     /* Allocate structure */
 154     p_aout->output.p_sys = malloc( sizeof( aout_sys_t ) );
 155     if( p_aout->output.p_sys == NULL )
 156     {
 157         msg_Err( p_aout, "out of memory" );
 158         return( VLC_ENOMEM );
 159     }
 160
 161     p_sys = p_aout->output.p_sys;
 162     p_sys->i_default_dev = 0;
 163     p_sys->i_selected_dev = 0;
 164     p_sys->i_devices = 0;
 165     p_sys->b_supports_digital = VLC_FALSE;
 166     p_sys->b_digital = VLC_FALSE;
 167     p_sys->au_component = NULL;
 168     p_sys->au_unit = NULL;
 169     p_sys->clock_diff = (mtime_t) 0;
 170     p_sys->i_read_bytes = 0;
 171     p_sys->i_total_bytes = 0;
 172     p_sys->i_hog_pid = -1;
 173     p_sys->i_stream_id = 0;
 174     p_sys->i_stream_index = 0;
 175     p_sys->b_revert = VLC_FALSE;
 176     p_sys->b_changed_mixing = VLC_FALSE;
 177     memset( p_sys->p_remainder_buffer, 0, sizeof(uint8_t) * BUFSIZE );
 178
 179     p_aout->output.pf_play = Play;
 180
 181     aout_FormatPrint( p_aout, "VLC is looking for:", (audio_sample_format_t *)&p_aout->output.output );
 182
 183     /* Persistent device variable */
 184     if( var_Type( p_aout->p_vlc, "macosx-audio-device" ) == 0 )
 185     {
 186         msg_Dbg( p_aout, "create macosx-audio-device" );
 187         var_Create( p_aout->p_vlc, "macosx-audio-device", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 188     }
 189
 190     /* Build a list of devices */
 191     if( var_Type( p_aout, "audio-device" ) == 0 )
 192     {
 193         Probe( p_aout );
 194     }
 195
 196     /* What device do we want? */
 197     if( var_Get( p_aout, "audio-device", &val ) < 0 )
 198     {
 199         msg_Err( p_aout, "audio-device var does not exist. device probe failed." );
 200         free( p_sys );
 201         return( VLC_ENOVAR );
 202     }
 203
 204     p_sys->i_selected_dev = val.i_int & ~AOUT_VAR_SPDIF_FLAG;
 205     p_sys->b_supports_digital = ( val.i_int & AOUT_VAR_SPDIF_FLAG ) ? VLC_TRUE : VLC_FALSE;
 206
 207     /* Check if the desired device is alive and usable */
 208     i_param_size = sizeof( b_alive );
 209     err = AudioDeviceGetProperty( p_sys->i_selected_dev, 0, FALSE,
 210                                   kAudioDevicePropertyDeviceIsAlive,
 211                                   &i_param_size, &b_alive );
 212
 213     if( err != noErr )
 214     {
 215         msg_Err( p_aout, "could not check whether device is alive: %4.4s",
 216                  (char *)&err );
 217         return VLC_EGENERIC;
 218     }
 219
 220     if( b_alive == VLC_FALSE )
 221     {
 222         msg_Err( p_aout, "Selected audio device is not alive switching to default device" );
 223         p_sys->i_selected_dev = p_sys->i_default_dev;
 224     }
 225
 226     i_param_size = sizeof( p_sys->i_hog_pid );
 227     err = AudioDeviceGetProperty( p_sys->i_selected_dev, 0, FALSE,
 228                                   kAudioDevicePropertyHogMode,
 229                                   &i_param_size, &p_sys->i_hog_pid );
 230
 231     if( err != noErr )
 232     {
 233         msg_Err( p_aout, "could not check whether device is hogged: %4.4s",
 234                  (char *)&err );
 235         return VLC_EGENERIC;
 236     }
 237
 238     if( p_sys->i_hog_pid != -1 && p_sys->i_hog_pid != getpid() )
 239     {
 240         msg_Err( p_aout, "Selected audio device is exclusively in use by another program" );
 241         var_Destroy( p_aout, "audio-device" );
 242         free( p_sys );
 243         return VLC_EGENERIC;
 244     }
 245
 246     /* Check for Digital mode or Analog output mode */
 247     if( AOUT_FMT_NON_LINEAR( &p_aout->output.output ) && p_sys->b_supports_digital )
 248     {
 249         if( OpenSPDIF( p_aout ) )
 250             return VLC_SUCCESS;
 251     }
 252     else
 253     {
 254         if( OpenAnalog( p_aout ) )
 255             return VLC_SUCCESS;
 256     }
 257
 258     /* If we reach this, the Open* failed */
 259     var_Destroy( p_aout, "audio-device" );
 260     free( p_sys );
 261     return VLC_EGENERIC;
 262 }
 263
 264 /*****************************************************************************
 265  * Open: open and setup a HAL AudioUnit
 266  *****************************************************************************/
 267 static int OpenAnalog( aout_instance_t *p_aout )
 268 {
 269     struct aout_sys_t       *p_sys = p_aout->output.p_sys;
 270     OSStatus                err = noErr;
 271     UInt32                  i_param_size = 0, i = 0;
 272     ComponentDescription    desc;
 273
 274     if( AOUT_FMT_NON_LINEAR( &p_aout->output.output ) && !p_sys->b_supports_digital )
 275     {
 276         msg_Dbg( p_aout, "we had requested a digital stream, but it's not possible for this device" );
 277     }
 278
 279     /* If analog only start setting up AUHAL */
 280     /* Lets go find our Component */
 281     desc.componentType = kAudioUnitType_Output;
 282     desc.componentSubType = kAudioUnitSubType_HALOutput;
 283     desc.componentManufacturer = kAudioUnitManufacturer_Apple;
 284     desc.componentFlags = 0;
 285     desc.componentFlagsMask = 0;
 286
 287     p_sys->au_component = FindNextComponent( NULL, &desc );
 288     if( p_sys->au_component == NULL )
 289     {
 290         msg_Err( p_aout, "we cannot find our HAL component" );
 291         return VLC_FALSE;
 292     }
 293
 294     err = OpenAComponent( p_sys->au_component, &p_sys->au_unit );
 295     if( err )
 296     {
 297         msg_Err( p_aout, "we cannot find our HAL component" );
 298         return VLC_FALSE;
 299     }
 300
 301     /* Enable IO for the component */
 302     msg_Dbg( p_aout, "Device: %#x", (int)p_sys->i_selected_dev );
 303
 304     /* Set the device */
 305     verify_noerr( AudioUnitSetProperty( p_sys->au_unit,
 306                          kAudioOutputUnitProperty_CurrentDevice,
 307                          kAudioUnitScope_Global,
 308                          0,
 309                          &p_sys->i_selected_dev,
 310                          sizeof( AudioDeviceID )));
 311
 312     /* Get the current format */
 313     AudioStreamBasicDescription DeviceFormat;
 314
 315     i_param_size = sizeof(AudioStreamBasicDescription);
 316
 317     verify_noerr( AudioUnitGetProperty( p_sys->au_unit,
 318                                    kAudioUnitProperty_StreamFormat,
 319                                    kAudioUnitScope_Input,
 320                                    0,
 321                                    &DeviceFormat,
 322                                    &i_param_size ));
 323
 324     msg_Dbg( p_aout, STREAM_FORMAT_MSG( "current format is: " , DeviceFormat ) );
 325
 326     /* Get the channel layout */
 327     AudioChannelLayout *layout;
 328     verify_noerr( AudioUnitGetPropertyInfo( p_sys->au_unit,
 329                                    kAudioDevicePropertyPreferredChannelLayout,
 330                                    kAudioUnitScope_Output,
 331                                    0,
 332                                    &i_param_size,
 333                                    NULL ));
 334
 335     layout = (AudioChannelLayout *)malloc( i_param_size);
 336
 337     verify_noerr( AudioUnitGetProperty( p_sys->au_unit,
 338                                    kAudioDevicePropertyPreferredChannelLayout,
 339                                    kAudioUnitScope_Output,
 340                                    0,
 341                                    layout,
 342                                    &i_param_size ));
 343
 344     /* Lets fill out the ChannelLayout */
 345     if( layout->mChannelLayoutTag == kAudioChannelLayoutTag_UseChannelBitmap)
 346     {
 347         msg_Dbg( p_aout, "bitmap defined channellayout" );
 348         verify_noerr( AudioFormatGetProperty( kAudioFormatProperty_ChannelLayoutForBitmap,
 349                                 sizeof( UInt32), &layout->mChannelBitmap,
 350                                 &i_param_size,
 351                                 layout ));
 352     }
 353     else if( layout->mChannelLayoutTag != kAudioChannelLayoutTag_UseChannelDescriptions )
 354     {
 355         msg_Dbg( p_aout, "layouttags defined channellayout" );
 356         verify_noerr( AudioFormatGetProperty( kAudioFormatProperty_ChannelLayoutForTag,
 357                                 sizeof( AudioChannelLayoutTag ), &layout->mChannelLayoutTag,
 358                                 &i_param_size,
 359                                 layout ));
 360     }
 361
 362     msg_Dbg( p_aout, "Layout of AUHAL has %d channels" , (int)layout->mNumberChannelDescriptions );
 363
 364     p_aout->output.output.i_physical_channels = 0;
 365     int i_original = p_aout->output.output.i_original_channels & AOUT_CHAN_PHYSMASK;
 366
 367     if( i_original == AOUT_CHAN_CENTER || layout->mNumberChannelDescriptions < 2 )
 368     {
 369         // We only need Mono or cannot output more
 370         p_aout->output.output.i_physical_channels |= AOUT_CHAN_CENTER;
 371     }
 372     else if( i_original == (AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT) || layout->mNumberChannelDescriptions < 3 )
 373     {
 374         // We only need Stereo or cannot output more
 375         p_aout->output.output.i_physical_channels |= AOUT_CHAN_RIGHT;
 376         p_aout->output.output.i_physical_channels |= AOUT_CHAN_LEFT;
 377     }
 378     else
 379     {
 380         // We want more then stereo and we can do that
 381         for( i = 0; i < layout->mNumberChannelDescriptions; i++ )
 382         {
 383             msg_Dbg( p_aout, "This is channel: %d", (int)layout->mChannelDescriptions[i].mChannelLabel );
 384
 385             switch( layout->mChannelDescriptions[i].mChannelLabel )
 386             {
 387                 case kAudioChannelLabel_Left:
 388                     p_aout->output.output.i_physical_channels |= AOUT_CHAN_LEFT;
 389                     continue;
 390                 case kAudioChannelLabel_Right:
 391                     p_aout->output.output.i_physical_channels |= AOUT_CHAN_RIGHT;
 392                     continue;
 393                 case kAudioChannelLabel_Center:
 394                     p_aout->output.output.i_physical_channels |= AOUT_CHAN_CENTER;
 395                     continue;
 396                 case kAudioChannelLabel_LFEScreen:
 397                     p_aout->output.output.i_physical_channels |= AOUT_CHAN_LFE;
 398                     continue;
 399                 case kAudioChannelLabel_LeftSurround:
 400                     p_aout->output.output.i_physical_channels |= AOUT_CHAN_REARLEFT;
 401                     continue;
 402                 case kAudioChannelLabel_RightSurround:
 403                     p_aout->output.output.i_physical_channels |= AOUT_CHAN_REARRIGHT;
 404                     continue;
 405                 case kAudioChannelLabel_RearSurroundLeft:
 406                     p_aout->output.output.i_physical_channels |= AOUT_CHAN_MIDDLELEFT;
 407                     continue;
 408                 case kAudioChannelLabel_RearSurroundRight:
 409                     p_aout->output.output.i_physical_channels |= AOUT_CHAN_MIDDLERIGHT;
 410                     continue;
 411                 case kAudioChannelLabel_CenterSurround:
 412                     p_aout->output.output.i_physical_channels |= AOUT_CHAN_REARCENTER;
 413                     continue;
 414                 default:
 415                     msg_Warn( p_aout, "Unrecognized channel form provided by driver: %d", (int)layout->mChannelDescriptions[i].mChannelLabel );
 416                     if( i == 0 )
 417                     {
 418                         msg_Warn( p_aout, "Probably no channellayout is set. force based on channelcount" );
 419                         switch( layout->mNumberChannelDescriptions )
 420                         {
 421                             /* We make assumptions based on number of channels here.
 422                              * Unfortunatly Apple has provided no 100% method to retrieve the speaker configuration */
 423                             case 1:
 424                                 p_aout->output.output.i_physical_channels = AOUT_CHAN_CENTER;
 425                                 break;
 426                             case 4:
 427                                 p_aout->output.output.i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT |
 428                                                                             AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT;
 429                                 break;
 430                             case 6:
 431                                 p_aout->output.output.i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT |
 432                                                                             AOUT_CHAN_CENTER | AOUT_CHAN_LFE |
 433                                                                             AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT;
 434                                 break;
 435                             case 7:
 436                                 p_aout->output.output.i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT |
 437                                                                             AOUT_CHAN_CENTER | AOUT_CHAN_LFE |
 438                                                                             AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT |
 439                                                                             AOUT_CHAN_REARCENTER;
 440                                 break;
 441                             case 8:
 442                                 p_aout->output.output.i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT |
 443                                                                             AOUT_CHAN_CENTER | AOUT_CHAN_LFE |
 444                                                                             AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT |
 445                                                                             AOUT_CHAN_MIDDLELEFT | AOUT_CHAN_MIDDLERIGHT;
 446                                 break;
 447                             case 2:
 448                             default:
 449                                 p_aout->output.output.i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
 450                         }
 451                     }
 452                     break;
 453             }
 454         }
 455     }
 456     if( layout ) free( layout );
 457
 458     msg_Dbg( p_aout, "we want to output these channels: %#x", p_aout->output.output.i_original_channels);
 459     msg_Dbg( p_aout, "selected %d physical channels for device output", aout_FormatNbChannels( &p_aout->output.output ) );
 460     msg_Dbg( p_aout, "%s", aout_FormatPrintChannels( &p_aout->output.output ));
 461
 462     AudioChannelLayout new_layout;
 463     memset (&new_layout, 0, sizeof(new_layout));
 464     switch( aout_FormatNbChannels( &p_aout->output.output ) )
 465     {
 466         case 1:
 467             new_layout.mChannelLayoutTag = kAudioChannelLayoutTag_Mono;
 468             break;
 469         case 2:
 470             new_layout.mChannelLayoutTag = kAudioChannelLayoutTag_Stereo;
 471             break;
 472         case 3:
 473             if( p_aout->output.output.i_physical_channels & AOUT_CHAN_CENTER )
 474             {
 475                 new_layout.mChannelLayoutTag = kAudioChannelLayoutTag_DVD_7; // L R C
 476             }
 477             else if( p_aout->output.output.i_physical_channels & AOUT_CHAN_LFE )
 478             {
 479                 new_layout.mChannelLayoutTag = kAudioChannelLayoutTag_DVD_4; // L R LFE
 480             }
 481             break;
 482         case 4:
 483             if( p_aout->output.output.i_physical_channels & ( AOUT_CHAN_CENTER | AOUT_CHAN_LFE ) )
 484             {
 485                 new_layout.mChannelLayoutTag = kAudioChannelLayoutTag_DVD_10; // L R C LFE
 486             }
 487             else if( p_aout->output.output.i_physical_channels & ( AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT ) )
 488             {
 489                 new_layout.mChannelLayoutTag = kAudioChannelLayoutTag_DVD_3; // L R Ls Rs
 490             }
 491             else if( p_aout->output.output.i_physical_channels & ( AOUT_CHAN_CENTER | AOUT_CHAN_REARCENTER ) )
 492             {
 493                 new_layout.mChannelLayoutTag = kAudioChannelLayoutTag_DVD_3; // L R C Cs
 494             }
 495             break;
 496         case 5:
 497             if( p_aout->output.output.i_physical_channels & ( AOUT_CHAN_CENTER ) )
 498             {
 499                 new_layout.mChannelLayoutTag = kAudioChannelLayoutTag_DVD_19; // L R Ls Rs C
 500             }
 501             else if( p_aout->output.output.i_physical_channels & ( AOUT_CHAN_LFE ) )
 502             {
 503                 new_layout.mChannelLayoutTag = kAudioChannelLayoutTag_DVD_18; // L R Ls Rs LFE
 504             }
 505             break;
 506         case 6:
 507             new_layout.mChannelLayoutTag = kAudioChannelLayoutTag_DVD_20; // L R Ls Rs C LFE
 508             break;
 509         case 7:
 510             /* FIXME: This is incorrect. VLC uses the internal ordering: L R Lm Rm Lr Rr C LFE but this is wrong */
 511             new_layout.mChannelLayoutTag = kAudioChannelLayoutTag_MPEG_6_1_A; // L R C LFE Ls Rs Cs
 512             break;
 513         case 8:
 514             /* FIXME: This is incorrect. VLC uses the internal ordering: L R Lm Rm Lr Rr C LFE but this is wrong */
 515             new_layout.mChannelLayoutTag = kAudioChannelLayoutTag_MPEG_7_1_A; // L R C LFE Ls Rs Lc Rc
 516             break;
 517     }
 518
 519     /* Set up the format to be used */
 520     DeviceFormat.mSampleRate = p_aout->output.output.i_rate;
 521     DeviceFormat.mFormatID = kAudioFormatLinearPCM;
 522
 523     /* We use float 32. It's the best supported format by both VLC and Coreaudio */
 524     p_aout->output.output.i_format = VLC_FOURCC( 'f','l','3','2');
 525     DeviceFormat.mFormatFlags = kAudioFormatFlagsNativeFloatPacked;
 526     DeviceFormat.mBitsPerChannel = 32;
 527     DeviceFormat.mChannelsPerFrame = aout_FormatNbChannels( &p_aout->output.output );
 528
 529     /* Calculate framesizes and stuff */
 530     aout_FormatPrepare( &p_aout->output.output );
 531     DeviceFormat.mFramesPerPacket = 1;
 532     DeviceFormat.mBytesPerFrame = DeviceFormat.mBitsPerChannel * DeviceFormat.mChannelsPerFrame / 8;
 533     DeviceFormat.mBytesPerPacket = DeviceFormat.mBytesPerFrame * DeviceFormat.mFramesPerPacket;
 534
 535     i_param_size = sizeof(AudioStreamBasicDescription);
 536     /* Set desired format (Use CAStreamBasicDescription )*/
 537     verify_noerr( AudioUnitSetProperty( p_sys->au_unit,
 538                                    kAudioUnitProperty_StreamFormat,
 539                                    kAudioUnitScope_Input,
 540                                    0,
 541                                    &DeviceFormat,
 542                                    i_param_size ));
 543
 544     msg_Dbg( p_aout, STREAM_FORMAT_MSG( "we set the AU format: " , DeviceFormat ) );
 545
 546     /* Retrieve actual format??? */
 547     verify_noerr( AudioUnitGetProperty( p_sys->au_unit,
 548                                    kAudioUnitProperty_StreamFormat,
 549                                    kAudioUnitScope_Input,
 550                                    0,
 551                                    &DeviceFormat,
 552                                    &i_param_size ));
 553
 554     msg_Dbg( p_aout, STREAM_FORMAT_MSG( "the actual set AU format is " , DeviceFormat ) );
 555
 556     p_aout->output.i_nb_samples = 2048;
 557     aout_VolumeSoftInit( p_aout );
 558
 559     /* Find the difference between device clock and mdate clock */
 560     p_sys->clock_diff = - (mtime_t)
 561         AudioConvertHostTimeToNanos( AudioGetCurrentHostTime() ) / 1000;
 562     p_sys->clock_diff += mdate();
 563
 564     /* set the IOproc callback */
 565     AURenderCallbackStruct input;
 566     input.inputProc = (AURenderCallback) RenderCallbackAnalog;
 567     input.inputProcRefCon = p_aout;
 568
 569     verify_noerr( AudioUnitSetProperty( p_sys->au_unit,
 570                             kAudioUnitProperty_SetRenderCallback,
 571                             kAudioUnitScope_Input,
 572                             0, &input, sizeof( input ) ) );
 573
 574     input.inputProc = (AURenderCallback) RenderCallbackAnalog;
 575     input.inputProcRefCon = p_aout;
 576
 577     /* Set the new_layout as the layout VLC feeds to the AU unit */
 578     verify_noerr( AudioUnitSetProperty( p_sys->au_unit,
 579                             kAudioUnitProperty_AudioChannelLayout,
 580                             kAudioUnitScope_Input,
 581                             0, &new_layout, sizeof(new_layout) ) );
 582
 583     /* AU initiliaze */
 584     verify_noerr( AudioUnitInitialize(p_sys->au_unit) );
 585
 586     verify_noerr( AudioOutputUnitStart(p_sys->au_unit) );
 587
 588     return VLC_TRUE;
 589 }
 590
 591 /*****************************************************************************
 592  * Setup a encoded digital stream (SPDIF)
 593  *****************************************************************************/
 594 static int OpenSPDIF( aout_instance_t * p_aout )
 595 {
 596     struct aout_sys_t       *p_sys = p_aout->output.p_sys;
 597     OSStatus                err = noErr;
 598     UInt32                  i_param_size = 0, b_mix = 0;
 599     Boolean                 b_writeable = VLC_FALSE;
 600     AudioStreamID           *p_streams = NULL;
 601     int                     i = 0, i_streams = 0;
 602
 603     struct timeval now;
 604     struct timespec timeout;
 605     struct { vlc_mutex_t lock; vlc_cond_t cond; } w;
 606
 607     /* Start doing the SPDIF setup proces */
 608     p_sys->b_digital = VLC_TRUE;
 609     msg_Dbg( p_aout, "opening in SPDIF mode" );
 610
 611     /* Hog the device */
 612     i_param_size = sizeof( p_sys->i_hog_pid );
 613     p_sys->i_hog_pid = getpid() ;
 614
 615     err = AudioDeviceSetProperty( p_sys->i_selected_dev, 0, 0, FALSE,
 616                                   kAudioDevicePropertyHogMode, i_param_size, &p_sys->i_hog_pid );
 617
 618     if( err != noErr )
 619     {
 620         msg_Err( p_aout, "failed to set hogmode: : [%4.4s]", (char *)&err );
 621         return VLC_FALSE;
 622     }
 623
 624     /* Set mixable to false if we are allowed to */
 625     err = AudioDeviceGetPropertyInfo( p_sys->i_selected_dev, 0, FALSE, kAudioDevicePropertySupportsMixing,
 626                                     &i_param_size, &b_writeable );
 627
 628     err = AudioDeviceGetProperty( p_sys->i_selected_dev, 0, FALSE, kAudioDevicePropertySupportsMixing,
 629                                     &i_param_size, &b_mix );
 630
 631     if( !err && b_writeable )
 632     {
 633         b_mix = 0;
 634         err = AudioDeviceSetProperty( p_sys->i_selected_dev, 0, 0, FALSE,
 635                             kAudioDevicePropertySupportsMixing, i_param_size, &b_mix );
 636         p_sys->b_changed_mixing = VLC_TRUE;
 637     }
 638
 639     if( err != noErr )
 640     {
 641         msg_Err( p_aout, "failed to set mixmode: [%4.4s]", (char *)&err );
 642         return VLC_FALSE;
 643     }
 644
 645     // Find stream_id of selected device with a cac3 stream
 646     err = AudioDeviceGetPropertyInfo( p_sys->i_selected_dev, 0, FALSE,
 647                                       kAudioDevicePropertyStreams,
 648                                       &i_param_size, NULL );
 649     if( err != noErr )
 650     {
 651         msg_Err( p_aout, "could not get number of streams: [%4.4s]", (char *)&err );
 652         return VLC_FALSE;
 653     }
 654
 655     i_streams = i_param_size / sizeof( AudioStreamID );
 656     p_streams = (AudioStreamID *)malloc( i_param_size );
 657     if( p_streams == NULL )
 658     {
 659         msg_Err( p_aout, "Out of memory" );
 660         return VLC_FALSE;
 661     }
 662
 663     err = AudioDeviceGetProperty( p_sys->i_selected_dev, 0, FALSE,
 664                                     kAudioDevicePropertyStreams,
 665                                     &i_param_size, p_streams );
 666
 667     if( err != noErr )
 668     {
 669         msg_Err( p_aout, "could not get number of streams: [%4.4s]", (char *)&err );
 670         if( p_streams ) free( p_streams );
 671         return VLC_FALSE;
 672     }
 673
 674     for( i = 0; i < i_streams; i++ )
 675     {
 676         // Find a stream with a cac3 stream
 677         AudioStreamBasicDescription *p_format_list = NULL;
 678         int                         i_formats = 0, j = 0;
 679
 680         /* Retrieve all the stream formats supported by each output stream */
 681         err = AudioStreamGetPropertyInfo( p_streams[i], 0,
 682                                           kAudioStreamPropertyPhysicalFormats,
 683                                           &i_param_size, NULL );
 684         if( err != noErr )
 685         {
 686             msg_Err( p_aout, "could not get number of streamformats: [%4.4s]", (char *)&err );
 687             continue;
 688         }
 689
 690         i_formats = i_param_size / sizeof( AudioStreamBasicDescription );
 691         p_format_list = (AudioStreamBasicDescription *)malloc( i_param_size );
 692         if( p_format_list == NULL )
 693         {
 694             msg_Err( p_aout, "Could not malloc the memory" );
 695             continue;
 696         }
 697
 698         err = AudioStreamGetProperty( p_streams[i], 0,
 699                                           kAudioStreamPropertyPhysicalFormats,
 700                                           &i_param_size, p_format_list );
 701         if( err != noErr )
 702         {
 703             msg_Err( p_aout, "could not get the list of streamformats: [%4.4s]", (char *)&err );
 704             if( p_format_list) free( p_format_list);
 705             continue;
 706         }
 707
 708         for( j = 0; j < i_formats; j++ )
 709         {
 710             if( p_format_list[j].mFormatID == 'IAC3' ||
 711                   p_format_list[j].mFormatID == kAudioFormat60958AC3 )
 712             {
 713                 // found a cac3 format
 714                 p_sys->i_stream_id = p_streams[i];
 715                 p_sys->i_stream_index = i;
 716
 717                 if( p_sys->b_revert == VLC_FALSE )
 718                 {
 719                     i_param_size = sizeof( p_sys->sfmt_revert );
 720                     err = AudioStreamGetProperty( p_sys->i_stream_id, 0,
 721                                                   kAudioStreamPropertyPhysicalFormat,
 722                                                   &i_param_size,
 723                                                   &p_sys->sfmt_revert );
 724                     if( err != noErr )
 725                     {
 726                         msg_Err( p_aout, "could not retrieve the original streamformat: [%4.4s]", (char *)&err );
 727                         continue;
 728                     }
 729                     p_sys->b_revert = VLC_TRUE;
 730                 }
 731                 if( p_format_list[j].mSampleRate == p_sys->sfmt_revert.mSampleRate )
 732                 {
 733                     p_sys->stream_format = p_format_list[j];
 734                 }
 735             }
 736         }
 737         if( p_format_list ) free( p_format_list );
 738     }
 739
 740     if( p_streams ) free( p_streams );
 741
 742     msg_Dbg( p_aout, STREAM_FORMAT_MSG( "original stream format: ", p_sys->sfmt_revert ) );
 743     msg_Dbg( p_aout, STREAM_FORMAT_MSG( "setting stream format: ", p_sys->stream_format ) );
 744
 745     /* Install the callback */
 746     err = AudioStreamAddPropertyListener( p_sys->i_stream_id, 0,
 747                                       kAudioStreamPropertyPhysicalFormat,
 748                                       StreamListener, (void *)&w );
 749     if( err != noErr )
 750     {
 751         msg_Err( p_aout, "AudioStreamAddPropertyListener failed: [%4.4s]", (char *)&err );
 752         return VLC_FALSE;
 753     }
 754
 755     /* Condition because SetProperty is asynchronious */
 756     vlc_cond_init( p_aout, &w.cond );
 757     vlc_mutex_init( p_aout, &w.lock );
 758     vlc_mutex_lock( &w.lock );
 759
 760     /* change the format */
 761     err = AudioStreamSetProperty( p_sys->i_stream_id, 0, 0,
 762                                   kAudioStreamPropertyPhysicalFormat,
 763                                   sizeof( AudioStreamBasicDescription ),
 764                                   &p_sys->stream_format );
 765     if( err != noErr )
 766     {
 767         msg_Err( p_aout, "could not set the stream format: [%4.4s]", (char *)&err );
 768         vlc_mutex_unlock( &w.lock );
 769         vlc_mutex_destroy( &w.lock );
 770         vlc_cond_destroy( &w.cond );
 771         return VLC_FALSE;
 772     }
 773
 774     gettimeofday( &now, NULL );
 775     timeout.tv_sec = now.tv_sec;
 776     timeout.tv_nsec = (now.tv_usec + 900000) * 1000;
 777
 778     pthread_cond_timedwait( &w.cond.cond, &w.lock.mutex, &timeout );
 779     vlc_mutex_unlock( &w.lock );
 780
 781     err = AudioStreamRemovePropertyListener( p_sys->i_stream_id, 0,
 782                                         kAudioStreamPropertyPhysicalFormat,
 783                                         StreamListener );
 784     if( err != noErr )
 785     {
 786         msg_Err( p_aout, "AudioStreamRemovePropertyListener failed: [%4.4s]", (char *)&err );
 787         vlc_mutex_destroy( &w.lock );
 788         vlc_cond_destroy( &w.cond );
 789         return VLC_FALSE;
 790     }
 791
 792     vlc_mutex_destroy( &w.lock );
 793     vlc_cond_destroy( &w.cond );
 794
 795     i_param_size = sizeof( AudioStreamBasicDescription );
 796     err = AudioStreamGetProperty( p_sys->i_stream_id, 0,
 797                                   kAudioStreamPropertyPhysicalFormat,
 798                                   &i_param_size,
 799                                   &p_sys->stream_format );
 800
 801     msg_Dbg( p_aout, STREAM_FORMAT_MSG( "actual format in use: ", p_sys->stream_format ) );
 802
 803     /* set the format flags */
 804     if( p_sys->stream_format.mFormatFlags & kAudioFormatFlagIsBigEndian )
 805         p_aout->output.output.i_format = VLC_FOURCC('s','p','d','b');
 806     else
 807         p_aout->output.output.i_format = VLC_FOURCC('s','p','d','i');
 808     p_aout->output.output.i_bytes_per_frame = AOUT_SPDIF_SIZE;
 809     p_aout->output.output.i_frame_length = A52_FRAME_NB;
 810     p_aout->output.i_nb_samples = p_aout->output.output.i_frame_length;
 811     p_aout->output.output.i_rate = (unsigned int)p_sys->stream_format.mSampleRate;
 812
 813     aout_VolumeNoneInit( p_aout );
 814
 815     /* Add IOProc callback */
 816     err = AudioDeviceAddIOProc( p_sys->i_selected_dev,
 817                                 (AudioDeviceIOProc)RenderCallbackSPDIF,
 818                                 (void *)p_aout );
 819     if( err != noErr )
 820     {
 821         msg_Err( p_aout, "AudioDeviceAddIOProc failed: [%4.4s]", (char *)&err );
 822         return VLC_FALSE;
 823     }
 824
 825     /* Check for the difference between the Device clock and mdate */
 826     p_sys->clock_diff = - (mtime_t)
 827         AudioConvertHostTimeToNanos( AudioGetCurrentHostTime() ) / 1000;
 828     p_sys->clock_diff += mdate();
 829
 830     /* Start device */
 831     err = AudioDeviceStart( p_sys->i_selected_dev, (AudioDeviceIOProc)RenderCallbackSPDIF );
 832     if( err != noErr )
 833     {
 834         msg_Err( p_aout, "AudioDeviceStart failed: [%4.4s]", (char *)&err );
 835
 836         err = AudioDeviceRemoveIOProc( p_sys->i_selected_dev,
 837                                        (AudioDeviceIOProc)RenderCallbackSPDIF );
 838         if( err != noErr )
 839         {
 840             msg_Err( p_aout, "AudioDeviceRemoveIOProc failed: [%4.4s]", (char *)&err );
 841         }
 842         return VLC_FALSE;
 843     }
 844
 845     return VLC_TRUE;
 846 }
 847
 848
 849 /*****************************************************************************
 850  * Close: Close HAL AudioUnit
 851  *****************************************************************************/
 852 static void Close( vlc_object_t * p_this )
 853 {
 854     aout_instance_t     *p_aout = (aout_instance_t *)p_this;
 855     struct aout_sys_t   *p_sys = p_aout->output.p_sys;
 856     OSStatus            err = noErr;
 857     UInt32              i_param_size = 0;
 858
 859     if( p_sys->au_unit )
 860     {
 861         verify_noerr( AudioOutputUnitStop( p_sys->au_unit ) );
 862         verify_noerr( AudioUnitUninitialize( p_sys->au_unit ) );
 863         verify_noerr( CloseComponent( p_sys->au_unit ) );
 864     }
 865
 866     if( p_sys->b_digital )
 867     {
 868         /* Stop device */
 869         err = AudioDeviceStop( p_sys->i_selected_dev,
 870                                (AudioDeviceIOProc)RenderCallbackSPDIF );
 871         if( err != noErr )
 872         {
 873             msg_Err( p_aout, "AudioDeviceStop failed: [%4.4s]", (char *)&err );
 874         }
 875
 876         /* Remove callback */
 877         err = AudioDeviceRemoveIOProc( p_sys->i_selected_dev,
 878                                        (AudioDeviceIOProc)RenderCallbackSPDIF );
 879         if( err != noErr )
 880         {
 881             msg_Err( p_aout, "AudioDeviceRemoveIOProc failed: [%4.4s]", (char *)&err );
 882         }
 883
 884         if( p_sys->b_revert )
 885         {
 886             struct timeval now;
 887             struct timespec timeout;
 888             struct { vlc_mutex_t lock; vlc_cond_t cond; } w;
 889
 890             /* Install the callback */
 891             err = AudioStreamAddPropertyListener( p_sys->i_stream_id, 0,
 892                                               kAudioStreamPropertyPhysicalFormat,
 893                                               StreamListener, (void *)&w );
 894             if( err != noErr )
 895             {
 896                 msg_Err( p_aout, "AudioStreamAddPropertyListener failed: [%4.4s]", (char *)&err );
 897             }
 898
 899             /* Condition because SetProperty is asynchronious */
 900             vlc_cond_init( p_aout, &w.cond );
 901             vlc_mutex_init( p_aout, &w.lock );
 902             vlc_mutex_lock( &w.lock );
 903
 904             msg_Dbg( p_aout, STREAM_FORMAT_MSG( "setting stream format: ", p_sys->sfmt_revert ) );
 905
 906             err = AudioStreamSetProperty( p_sys->i_stream_id, NULL, 0,
 907                                             kAudioStreamPropertyPhysicalFormat,
 908                                             sizeof( AudioStreamBasicDescription ),
 909                                             &p_sys->sfmt_revert );
 910
 911             if( err != noErr )
 912             {
 913                 msg_Err( p_aout, "Streamformat reverse failed: [%4.4s]", (char *)&err );
 914             }
 915
 916             gettimeofday( &now, NULL );
 917             timeout.tv_sec = now.tv_sec;
 918             timeout.tv_nsec = (now.tv_usec + 900000) * 1000;
 919
 920             pthread_cond_timedwait( &w.cond.cond, &w.lock.mutex, &timeout );
 921             vlc_mutex_unlock( &w.lock );
 922
 923             err = AudioStreamRemovePropertyListener( p_sys->i_stream_id, 0,
 924                                                 kAudioStreamPropertyPhysicalFormat,
 925                                                 StreamListener );
 926             if( err != noErr )
 927             {
 928                 msg_Err( p_aout, "AudioStreamRemovePropertyListener failed: [%4.4s]", (char *)&err );
 929             }
 930
 931             vlc_mutex_destroy( &w.lock );
 932             vlc_cond_destroy( &w.cond );
 933
 934             i_param_size = sizeof( AudioStreamBasicDescription );
 935             err = AudioStreamGetProperty( p_sys->i_stream_id, 0,
 936                                           kAudioStreamPropertyPhysicalFormat,
 937                                           &i_param_size,
 938                                           &p_sys->stream_format );
 939
 940             msg_Dbg( p_aout, STREAM_FORMAT_MSG( "actual format in use: ", p_sys->stream_format ) );
 941         }
 942         if( p_sys->b_changed_mixing && p_sys->sfmt_revert.mFormatID != kAudioFormat60958AC3 )
 943         {
 944             int b_mix;
 945             Boolean b_writeable;
 946             /* Revert mixable to true if we are allowed to */
 947             err = AudioDeviceGetPropertyInfo( p_sys->i_selected_dev, 0, FALSE, kAudioDevicePropertySupportsMixing,
 948                                         &i_param_size, &b_writeable );
 949
 950             err = AudioDeviceGetProperty( p_sys->i_selected_dev, 0, FALSE, kAudioDevicePropertySupportsMixing,
 951                                         &i_param_size, &b_mix );
 952
 953             if( !err && b_writeable )
 954             {
 955                 msg_Dbg( p_aout, "mixable is: %d", b_mix );
 956                 b_mix = 1;
 957                 err = AudioDeviceSetProperty( p_sys->i_selected_dev, 0, 0, FALSE,
 958                                     kAudioDevicePropertySupportsMixing, i_param_size, &b_mix );
 959             }
 960
 961             if( err != noErr )
 962             {
 963                 msg_Err( p_aout, "failed to set mixmode: [%4.4s]", (char *)&err );
 964             }
 965         }
 966     }
 967
 968     err = AudioHardwareRemovePropertyListener( kAudioHardwarePropertyDevices,
 969                                                HardwareListener );
 970
 971     if( err != noErr )
 972     {
 973         msg_Err( p_aout, "AudioHardwareRemovePropertyListener failed: [%4.4s]", (char *)&err );
 974     }
 975
 976     if( p_sys->i_hog_pid == getpid() )
 977     {
 978         p_sys->i_hog_pid = -1;
 979         i_param_size = sizeof( p_sys->i_hog_pid );
 980         err = AudioDeviceSetProperty( p_sys->i_selected_dev, 0, 0, FALSE,
 981                                          kAudioDevicePropertyHogMode, i_param_size, &p_sys->i_hog_pid );
 982         if( err != noErr ) msg_Err( p_aout, "Could not release hogmode: [%4.4s]", (char *)&err );
 983     }
 984
 985     if( p_sys ) free( p_sys );
 986 }
 987
 988 /*****************************************************************************
 989  * Play: nothing to do
 990  *****************************************************************************/
 991 static void Play( aout_instance_t * p_aout )
 992 {
 993 }
 994
 995
 996 /*****************************************************************************
 997  * Probe
 998  *****************************************************************************/
 999 static void Probe( aout_instance_t * p_aout )
1000 {
1001     OSStatus            err = noErr;
1002     UInt32              i = 0, i_param_size = 0;
1003     AudioDeviceID       devid_def = 0;
1004     AudioDeviceID       *p_devices = NULL;
1005     vlc_value_t         val, text;
1006
1007     struct aout_sys_t   *p_sys = p_aout->output.p_sys;
1008
1009     /* Get number of devices */
1010     err = AudioHardwareGetPropertyInfo( kAudioHardwarePropertyDevices,
1011                                         &i_param_size, NULL );
1012     if( err != noErr )
1013     {
1014         msg_Err( p_aout, "could not get number of devices: [%4.4s]", (char *)&err );
1015         goto error;
1016     }
1017
1018     p_sys->i_devices = i_param_size / sizeof( AudioDeviceID );
1019
1020     if( p_sys->i_devices < 1 )
1021     {
1022         msg_Err( p_aout, "no devices found" );
1023         goto error;
1024     }
1025
1026     msg_Dbg( p_aout, "system has [%ld] device(s)", p_sys->i_devices );
1027
1028     /* Allocate DeviceID array */
1029     p_devices = (AudioDeviceID*)malloc( sizeof(AudioDeviceID) * p_sys->i_devices );
1030     if( p_devices == NULL )
1031     {
1032         msg_Err( p_aout, "out of memory" );
1033         goto error;
1034     }
1035
1036     /* Populate DeviceID array */
1037     err = AudioHardwareGetProperty( kAudioHardwarePropertyDevices,
1038                                     &i_param_size, p_devices );
1039     if( err != noErr )
1040     {
1041         msg_Err( p_aout, "could not get the device ID's: [%4.4s]", (char *)&err );
1042         goto error;
1043     }
1044
1045     /* Find the ID of the default Device */
1046     i_param_size = sizeof( AudioDeviceID );
1047     err = AudioHardwareGetProperty( kAudioHardwarePropertyDefaultOutputDevice,
1048                                     &i_param_size, &devid_def );
1049     if( err != noErr )
1050     {
1051         msg_Err( p_aout, "could not get default audio device: [%4.4s]", (char *)&err );
1052         goto error;
1053     }
1054     p_sys->i_default_dev = devid_def;
1055
1056     var_Create( p_aout, "audio-device", VLC_VAR_INTEGER|VLC_VAR_HASCHOICE );
1057     text.psz_string = _("Audio Device");
1058     var_Change( p_aout, "audio-device", VLC_VAR_SETTEXT, &text, NULL );
1059
1060     for( i = 0; i < p_sys->i_devices; i++ )
1061     {
1062         char *psz_name;
1063         i_param_size = 0;
1064
1065         /* Retrieve the length of the device name */
1066         err = AudioDeviceGetPropertyInfo(
1067                     p_devices[i], 0, VLC_FALSE,
1068                     kAudioDevicePropertyDeviceName,
1069                     &i_param_size, NULL);
1070         if( err ) goto error;
1071
1072         /* Retrieve the name of the device */
1073         psz_name = (char *)malloc( i_param_size );
1074         err = AudioDeviceGetProperty(
1075                     p_devices[i], 0, VLC_FALSE,
1076                     kAudioDevicePropertyDeviceName,
1077                     &i_param_size, psz_name);
1078         if( err ) goto error;
1079
1080         msg_Dbg( p_aout, "DevID: %#lx  DevName: %s", p_devices[i], psz_name );
1081
1082         if( !AudioDeviceHasOutput( p_devices[i]) )
1083         {
1084             msg_Dbg( p_aout, "this device is INPUT only. skipping..." );
1085             continue;
1086         }
1087
1088         val.i_int = (int)p_devices[i];
1089         text.psz_string = strdup( psz_name );
1090         var_Change( p_aout, "audio-device", VLC_VAR_ADDCHOICE, &val, &text );
1091         if( p_sys->i_default_dev == p_devices[i] )
1092         {
1093             var_Change( p_aout, "audio-device", VLC_VAR_SETDEFAULT, &val, NULL );
1094             var_Set( p_aout, "audio-device", val );
1095         }
1096
1097         if( AudioDeviceSupportsDigital( p_aout, p_devices[i] ) )
1098         {
1099             val.i_int = (int)p_devices[i] | AOUT_VAR_SPDIF_FLAG;
1100             asprintf( &text.psz_string, "%s (Encoded Output)", psz_name );
1101             var_Change( p_aout, "audio-device", VLC_VAR_ADDCHOICE, &val, &text );
1102             if( p_sys->i_default_dev == p_devices[i] && config_GetInt( p_aout, "spdif" ) )
1103             {
1104                 var_Change( p_aout, "audio-device", VLC_VAR_SETDEFAULT, &val, NULL );
1105                 var_Set( p_aout, "audio-device", val );
1106             }
1107         }
1108
1109         free( psz_name);
1110     }
1111
1112     var_Get( p_aout->p_vlc, "macosx-audio-device", &val );
1113     msg_Dbg( p_aout, "device value override1: %#x", val.i_int );
1114     if( val.i_int > 0 )
1115     {
1116         msg_Dbg( p_aout, "device value override2: %#x", val.i_int );
1117         var_Change( p_aout, "audio-device", VLC_VAR_SETDEFAULT, &val, NULL );
1118         var_Set( p_aout, "audio-device", val );
1119     }
1120
1121     var_AddCallback( p_aout, "audio-device", AudioDeviceCallback, NULL );
1122
1123     /* attach a Listener so that we are notified of a change in the Device setup */
1124     err = AudioHardwareAddPropertyListener( kAudioHardwarePropertyDevices,
1125                                             HardwareListener,
1126                                             (void *)p_aout );
1127     if( err )
1128         goto error;
1129
1130     msg_Dbg( p_aout, "succesful finish of deviceslist" );
1131     if( p_devices ) free( p_devices );
1132     return;
1133
1134 error:
1135     var_Destroy( p_aout, "audio-device" );
1136     if( p_devices ) free( p_devices );
1137     return;
1138 }
1139
1140 /*****************************************************************************
1141  * AudioDeviceHasOutput: Checks if the Device actually provides any outputs at all
1142  *****************************************************************************/
1143 static int AudioDeviceHasOutput( AudioDeviceID i_dev_id )
1144 {
1145     UInt32                      dataSize;
1146     Boolean                     isWritable;
1147
1148     verify_noerr( AudioDeviceGetPropertyInfo( i_dev_id, 0, FALSE, kAudioDevicePropertyStreams, &dataSize, &isWritable) );
1149     if (dataSize == 0) return FALSE;
1150
1151     return TRUE;
1152 }
1153
1154 /*****************************************************************************
1155  * AudioDeviceSupportsDigital: Check i_dev_id for digital stream support.
1156  *****************************************************************************/
1157 static int AudioDeviceSupportsDigital( aout_instance_t *p_aout, AudioDeviceID i_dev_id )
1158 {
1159     OSStatus                    err = noErr;
1160     UInt32                      i_param_size = 0;
1161     AudioStreamID               *p_streams = NULL;
1162     int                         i = 0, i_streams = 0;
1163     vlc_bool_t                  b_return = VLC_FALSE;
1164
1165     /* Retrieve all the output streams */
1166     err = AudioDeviceGetPropertyInfo( i_dev_id, 0, FALSE,
1167                                       kAudioDevicePropertyStreams,
1168                                       &i_param_size, NULL );
1169     if( err != noErr )
1170     {
1171         msg_Err( p_aout, "could not get number of streams: [%4.4s]", (char *)&err );
1172         return VLC_FALSE;
1173     }
1174
1175     i_streams = i_param_size / sizeof( AudioStreamID );
1176     p_streams = (AudioStreamID *)malloc( i_param_size );
1177     if( p_streams == NULL )
1178     {
1179         msg_Err( p_aout, "Out of memory" );
1180         return VLC_ENOMEM;
1181     }
1182
1183     err = AudioDeviceGetProperty( i_dev_id, 0, FALSE,
1184                                     kAudioDevicePropertyStreams,
1185                                     &i_param_size, p_streams );
1186
1187     if( err != noErr )
1188     {
1189         msg_Err( p_aout, "could not get number of streams: [%4.4s]", (char *)&err );
1190         return VLC_FALSE;
1191     }
1192
1193     for( i = 0; i < i_streams; i++ )
1194     {
1195         if( AudioStreamSupportsDigital( p_aout, p_streams[i] ) )
1196             b_return = VLC_TRUE;
1197     }
1198
1199     if( p_streams ) free( p_streams );
1200     return b_return;
1201 }
1202
1203 /*****************************************************************************
1204  * AudioStreamSupportsDigital: Check i_stream_id for digital stream support.
1205  *****************************************************************************/
1206 static int AudioStreamSupportsDigital( aout_instance_t *p_aout, AudioStreamID i_stream_id )
1207 {
1208     OSStatus                    err = noErr;
1209     UInt32                      i_param_size = 0;
1210     AudioStreamBasicDescription *p_format_list = NULL;
1211     int                         i = 0, i_formats = 0;
1212     vlc_bool_t                  b_return = VLC_FALSE;
1213
1214     /* Retrieve all the stream formats supported by each output stream */
1215     err = AudioStreamGetPropertyInfo( i_stream_id, 0,
1216                                       kAudioStreamPropertyPhysicalFormats,
1217                                       &i_param_size, NULL );
1218     if( err != noErr )
1219     {
1220         msg_Err( p_aout, "could not get number of streamformats: [%4.4s]", (char *)&err );
1221         return VLC_FALSE;
1222     }
1223
1224     i_formats = i_param_size / sizeof( AudioStreamBasicDescription );
1225     msg_Dbg( p_aout, "number of formats: %d", i_formats );
1226     p_format_list = (AudioStreamBasicDescription *)malloc( i_param_size );
1227     if( p_format_list == NULL )
1228     {
1229         msg_Err( p_aout, "Could not malloc the memory" );
1230         return VLC_FALSE;
1231     }
1232
1233     err = AudioStreamGetProperty( i_stream_id, 0,
1234                                       kAudioStreamPropertyPhysicalFormats,
1235                                       &i_param_size, p_format_list );
1236     if( err != noErr )
1237     {
1238         msg_Err( p_aout, "could not get the list of streamformats: [%4.4s]", (char *)&err );
1239         free( p_format_list);
1240         p_format_list = NULL;
1241         return VLC_FALSE;
1242     }
1243
1244     for( i = 0; i < i_formats; i++ )
1245     {
1246         msg_Dbg( p_aout, STREAM_FORMAT_MSG( "supported format: ", p_format_list[i] ) );
1247
1248         if( p_format_list[i].mFormatID == 'IAC3' ||
1249                   p_format_list[i].mFormatID == kAudioFormat60958AC3 )
1250         {
1251             b_return = VLC_TRUE;
1252         }
1253     }
1254
1255     if( p_format_list ) free( p_format_list );
1256     return b_return;
1257 }
1258
1259 /*****************************************************************************
1260  * RenderCallbackAnalog: This function is called everytime the AudioUnit wants
1261  * us to provide some more audio data.
1262  * Don't print anything during normal playback, calling blocking function from
1263  * this callback is not allowed.
1264  *****************************************************************************/
1265 static OSStatus RenderCallbackAnalog( vlc_object_t *_p_aout,
1266                                       AudioUnitRenderActionFlags *ioActionFlags,
1267                                       const AudioTimeStamp *inTimeStamp,
1268                                       unsigned int inBusNummer,
1269                                       unsigned int inNumberFrames,
1270                                       AudioBufferList *ioData )
1271 {
1272     AudioTimeStamp  host_time;
1273     mtime_t         current_date = 0;
1274     uint32_t        i_mData_bytes = 0;
1275
1276     aout_instance_t * p_aout = (aout_instance_t *)_p_aout;
1277     struct aout_sys_t * p_sys = p_aout->output.p_sys;
1278
1279     host_time.mFlags = kAudioTimeStampHostTimeValid;
1280     AudioDeviceTranslateTime( p_sys->i_selected_dev, inTimeStamp, &host_time );
1281
1282     /* Check for the difference between the Device clock and mdate */
1283     p_sys->clock_diff = - (mtime_t)
1284         AudioConvertHostTimeToNanos( AudioGetCurrentHostTime() ) / 1000;
1285     p_sys->clock_diff += mdate();
1286
1287     current_date = p_sys->clock_diff +
1288                    AudioConvertHostTimeToNanos( host_time.mHostTime ) / 1000;
1289                    //- ((mtime_t) 1000000 / p_aout->output.output.i_rate * 31 ); // 31 = Latency in Frames. retrieve somewhere
1290
1291     if( ioData == NULL && ioData->mNumberBuffers < 1 )
1292     {
1293         msg_Err( p_aout, "no iodata or buffers");
1294         return 0;
1295     }
1296     if( ioData->mNumberBuffers > 1 )
1297         msg_Err( p_aout, "well this is weird. seems like there is more than one buffer..." );
1298
1299
1300     if( p_sys->i_total_bytes > 0 )
1301     {
1302         i_mData_bytes = __MIN( p_sys->i_total_bytes - p_sys->i_read_bytes, ioData->mBuffers[0].mDataByteSize );
1303         p_aout->p_vlc->pf_memcpy( ioData->mBuffers[0].mData, &p_sys->p_remainder_buffer[p_sys->i_read_bytes], i_mData_bytes );
1304         p_sys->i_read_bytes += i_mData_bytes;
1305         current_date += (mtime_t) ( (mtime_t) 1000000 / p_aout->output.output.i_rate ) *
1306                         ( i_mData_bytes / 4 / aout_FormatNbChannels( &p_aout->output.output )  ); // 4 is fl32 specific
1307
1308         if( p_sys->i_read_bytes >= p_sys->i_total_bytes )
1309             p_sys->i_read_bytes = p_sys->i_total_bytes = 0;
1310     }
1311
1312     while( i_mData_bytes < ioData->mBuffers[0].mDataByteSize )
1313     {
1314         /* We don't have enough data yet */
1315         aout_buffer_t * p_buffer;
1316         p_buffer = aout_OutputNextBuffer( p_aout, current_date , VLC_FALSE );
1317
1318         if( p_buffer != NULL )
1319         {
1320             uint32_t i_second_mData_bytes = __MIN( p_buffer->i_nb_bytes, ioData->mBuffers[0].mDataByteSize - i_mData_bytes );
1321
1322             p_aout->p_vlc->pf_memcpy( (uint8_t *)ioData->mBuffers[0].mData + i_mData_bytes, p_buffer->p_buffer, i_second_mData_bytes );
1323             i_mData_bytes += i_second_mData_bytes;
1324
1325             if( i_mData_bytes >= ioData->mBuffers[0].mDataByteSize )
1326             {
1327                 p_sys->i_total_bytes = p_buffer->i_nb_bytes - i_second_mData_bytes;
1328                 p_aout->p_vlc->pf_memcpy( p_sys->p_remainder_buffer, &p_buffer->p_buffer[i_second_mData_bytes], p_sys->i_total_bytes );
1329             }
1330             else
1331             {
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
1335             }
1336             aout_BufferFree( p_buffer );
1337         }
1338         else
1339         {
1340              p_aout->p_vlc->pf_memset( (uint8_t *)ioData->mBuffers[0].mData +i_mData_bytes, 0, ioData->mBuffers[0].mDataByteSize - i_mData_bytes );
1341              i_mData_bytes += ioData->mBuffers[0].mDataByteSize - i_mData_bytes;
1342         }
1343     }
1344     return( noErr );
1345 }
1346
1347 /*****************************************************************************
1348  * RenderCallbackSPDIF: callback for SPDIF audio output
1349  *****************************************************************************/
1350 static OSStatus RenderCallbackSPDIF( AudioDeviceID inDevice,
1351                                     const AudioTimeStamp * inNow,
1352                                     const void * inInputData,
1353                                     const AudioTimeStamp * inInputTime,
1354                                     AudioBufferList * outOutputData,
1355                                     const AudioTimeStamp * inOutputTime,
1356                                     void * threadGlobals )
1357 {
1358     aout_buffer_t * p_buffer;
1359     mtime_t         current_date;
1360
1361     aout_instance_t * p_aout = (aout_instance_t *)threadGlobals;
1362     struct aout_sys_t * p_sys = p_aout->output.p_sys;
1363
1364     /* Check for the difference between the Device clock and mdate */
1365     p_sys->clock_diff = - (mtime_t)
1366         AudioConvertHostTimeToNanos( inNow->mHostTime ) / 1000;
1367     p_sys->clock_diff += mdate();
1368
1369     current_date = p_sys->clock_diff +
1370                    AudioConvertHostTimeToNanos( inOutputTime->mHostTime ) / 1000;
1371                    //- ((mtime_t) 1000000 / p_aout->output.output.i_rate * 31 ); // 31 = Latency in Frames. retrieve somewhere
1372
1373     p_buffer = aout_OutputNextBuffer( p_aout, current_date, VLC_TRUE );
1374
1375 #define BUFFER outOutputData->mBuffers[p_sys->i_stream_index]
1376     if( p_buffer != NULL )
1377     {
1378         if( (int)BUFFER.mDataByteSize != (int)p_buffer->i_nb_bytes)
1379             msg_Warn( p_aout, "bytesize: %d nb_bytes: %d", (int)BUFFER.mDataByteSize, (int)p_buffer->i_nb_bytes );
1380
1381         /* move data into output data buffer */
1382         p_aout->p_vlc->pf_memcpy( BUFFER.mData,
1383                                   p_buffer->p_buffer, p_buffer->i_nb_bytes );
1384         aout_BufferFree( p_buffer );
1385     }
1386     else
1387     {
1388         p_aout->p_vlc->pf_memset( BUFFER.mData, 0, BUFFER.mDataByteSize );
1389     }
1390 #undef BUFFER
1391
1392     return( noErr );
1393 }
1394
1395 /*****************************************************************************
1396  * HardwareListener: Warns us of changes in the list of registered devices
1397  *****************************************************************************/
1398 static OSStatus HardwareListener( AudioHardwarePropertyID inPropertyID,
1399                                   void * inClientData )
1400 {
1401     OSStatus err = noErr;
1402     aout_instance_t     *p_aout = (aout_instance_t *)inClientData;
1403
1404     switch( inPropertyID )
1405     {
1406         case kAudioHardwarePropertyDevices:
1407         {
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" );
1412         }
1413         break;
1414     }
1415
1416     return( err );
1417 }
1418
1419 /*****************************************************************************
1420  * StreamListener
1421  *****************************************************************************/
1422 static OSStatus StreamListener( AudioStreamID inStream,
1423                                 UInt32 inChannel,
1424                                 AudioDevicePropertyID inPropertyID,
1425                                 void * inClientData )
1426 {
1427     OSStatus err = noErr;
1428     struct { vlc_mutex_t lock; vlc_cond_t cond; } * w = inClientData;
1429
1430     switch( inPropertyID )
1431     {
1432         case kAudioStreamPropertyPhysicalFormat:
1433             vlc_mutex_lock( &w->lock );
1434             vlc_cond_signal( &w->cond );
1435             vlc_mutex_unlock( &w->lock );
1436             break;
1437
1438         default:
1439             break;
1440     }
1441     return( err );
1442 }
1443
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 )
1449 {
1450     aout_instance_t *p_aout = (aout_instance_t *)p_this;
1451     var_Set( p_aout->p_vlc, "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 );
1454 }
1455