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 = -1;
 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 && p_sys->i_stream_index < 0 ; i++ )
 675     {
 676         // Find a stream with a cac3 stream
 677         AudioStreamBasicDescription *p_format_list = NULL;
 678         int                         i_formats = 0, j = 0;
 679         vlc_bool_t                  b_digital = VLC_FALSE;
 680
 681         /* Retrieve all the stream formats supported by each output stream */
 682         err = AudioStreamGetPropertyInfo( p_streams[i], 0,
 683                                           kAudioStreamPropertyPhysicalFormats,
 684                                           &i_param_size, NULL );
 685         if( err != noErr )
 686         {
 687             msg_Err( p_aout, "could not get number of streamformats: [%4.4s]", (char *)&err );
 688             continue;
 689         }
 690
 691         i_formats = i_param_size / sizeof( AudioStreamBasicDescription );
 692         p_format_list = (AudioStreamBasicDescription *)malloc( i_param_size );
 693         if( p_format_list == NULL )
 694         {
 695             msg_Err( p_aout, "Could not malloc the memory" );
 696             continue;
 697         }
 698
 699         err = AudioStreamGetProperty( p_streams[i], 0,
 700                                           kAudioStreamPropertyPhysicalFormats,
 701                                           &i_param_size, p_format_list );
 702         if( err != noErr )
 703         {
 704             msg_Err( p_aout, "could not get the list of streamformats: [%4.4s]", (char *)&err );
 705             if( p_format_list) free( p_format_list);
 706             continue;
 707         }
 708
 709         for( j = 0; j < i_formats; j++ )
 710         {
 711             if( p_format_list[j].mFormatID == 'IAC3' ||
 712                   p_format_list[j].mFormatID == kAudioFormat60958AC3 )
 713             {
 714                 b_digital = VLC_TRUE;
 715                 break;
 716             }
 717         }
 718
 719         if( b_digital )
 720         {
 721             int i_requested_format = -1;
 722             int i_current_format = -1;
 723             int i_backup_format = -1;
 724             // found a cac3 format
 725             p_sys->i_stream_id = p_streams[i];
 726             p_sys->i_stream_index = i;
 727
 728             if( p_sys->b_revert == VLC_FALSE )
 729             {
 730                 i_param_size = sizeof( p_sys->sfmt_revert );
 731                 err = AudioStreamGetProperty( p_sys->i_stream_id, 0,
 732                                               kAudioStreamPropertyPhysicalFormat,
 733                                               &i_param_size,
 734                                               &p_sys->sfmt_revert );
 735                 if( err != noErr )
 736                 {
 737                     msg_Err( p_aout, "could not retrieve the original streamformat: [%4.4s]", (char *)&err );
 738                     continue;
 739                 }
 740                 p_sys->b_revert = VLC_TRUE;
 741             }
 742             for( j = 0; j < i_formats; j++ )
 743             {
 744                 if( p_format_list[j].mFormatID == 'IAC3' ||
 745                       p_format_list[j].mFormatID == kAudioFormat60958AC3 )
 746                 {
 747                     if( p_format_list[j].mSampleRate == p_aout->output.output.i_rate )
 748                     {
 749                         i_requested_format = j;
 750                         break;
 751                     }
 752                     else if( p_format_list[j].mSampleRate == p_sys->sfmt_revert.mSampleRate )
 753                     {
 754                         i_current_format = j;
 755                     }
 756                     else
 757                     {
 758                         if( i_backup_format < 0 || p_format_list[j].mSampleRate > p_format_list[i_backup_format].mSampleRate )
 759                             i_backup_format = j;
 760                     }
 761                 }
 762
 763             }
 764             if( i_requested_format >= 0 )
 765                 p_sys->stream_format = p_format_list[i_requested_format];
 766             else if( i_current_format >= 0 )
 767                 p_sys->stream_format = p_format_list[i_current_format];
 768             else p_sys->stream_format = p_format_list[i_backup_format];
 769         }
 770         if( p_format_list ) free( p_format_list );
 771     }
 772     if( p_streams ) free( p_streams );
 773
 774     msg_Dbg( p_aout, STREAM_FORMAT_MSG( "original stream format: ", p_sys->sfmt_revert ) );
 775     msg_Dbg( p_aout, STREAM_FORMAT_MSG( "setting stream format: ", p_sys->stream_format ) );
 776
 777     /* Install the callback */
 778     err = AudioStreamAddPropertyListener( p_sys->i_stream_id, 0,
 779                                       kAudioStreamPropertyPhysicalFormat,
 780                                       StreamListener, (void *)&w );
 781     if( err != noErr )
 782     {
 783         msg_Err( p_aout, "AudioStreamAddPropertyListener failed: [%4.4s]", (char *)&err );
 784         return VLC_FALSE;
 785     }
 786
 787     /* Condition because SetProperty is asynchronious */
 788     vlc_cond_init( p_aout, &w.cond );
 789     vlc_mutex_init( p_aout, &w.lock );
 790     vlc_mutex_lock( &w.lock );
 791
 792     /* change the format */
 793     err = AudioStreamSetProperty( p_sys->i_stream_id, 0, 0,
 794                                   kAudioStreamPropertyPhysicalFormat,
 795                                   sizeof( AudioStreamBasicDescription ),
 796                                   &p_sys->stream_format );
 797     if( err != noErr )
 798     {
 799         msg_Err( p_aout, "could not set the stream format: [%4.4s]", (char *)&err );
 800         vlc_mutex_unlock( &w.lock );
 801         vlc_mutex_destroy( &w.lock );
 802         vlc_cond_destroy( &w.cond );
 803         return VLC_FALSE;
 804     }
 805
 806     gettimeofday( &now, NULL );
 807     timeout.tv_sec = now.tv_sec;
 808     timeout.tv_nsec = (now.tv_usec + 900000) * 1000;
 809
 810     if( pthread_cond_timedwait( &w.cond.cond, &w.lock.mutex, &timeout ) )
 811     {
 812         msg_Dbg( p_aout, "reached timeout" );
 813     }
 814     vlc_mutex_unlock( &w.lock );
 815
 816     err = AudioStreamRemovePropertyListener( p_sys->i_stream_id, 0,
 817                                         kAudioStreamPropertyPhysicalFormat,
 818                                         StreamListener );
 819     if( err != noErr )
 820     {
 821         msg_Err( p_aout, "AudioStreamRemovePropertyListener failed: [%4.4s]", (char *)&err );
 822         vlc_mutex_destroy( &w.lock );
 823         vlc_cond_destroy( &w.cond );
 824         return VLC_FALSE;
 825     }
 826
 827     vlc_mutex_destroy( &w.lock );
 828     vlc_cond_destroy( &w.cond );
 829
 830     i_param_size = sizeof( AudioStreamBasicDescription );
 831     err = AudioStreamGetProperty( p_sys->i_stream_id, 0,
 832                                   kAudioStreamPropertyPhysicalFormat,
 833                                   &i_param_size,
 834                                   &p_sys->stream_format );
 835
 836     msg_Dbg( p_aout, STREAM_FORMAT_MSG( "actual format in use: ", p_sys->stream_format ) );
 837
 838     /* set the format flags */
 839     if( p_sys->stream_format.mFormatFlags & kAudioFormatFlagIsBigEndian )
 840         p_aout->output.output.i_format = VLC_FOURCC('s','p','d','b');
 841     else
 842         p_aout->output.output.i_format = VLC_FOURCC('s','p','d','i');
 843     p_aout->output.output.i_bytes_per_frame = AOUT_SPDIF_SIZE;
 844     p_aout->output.output.i_frame_length = A52_FRAME_NB;
 845     p_aout->output.i_nb_samples = p_aout->output.output.i_frame_length;
 846     p_aout->output.output.i_rate = (unsigned int)p_sys->stream_format.mSampleRate;
 847
 848     aout_VolumeNoneInit( p_aout );
 849
 850     /* Add IOProc callback */
 851     err = AudioDeviceAddIOProc( p_sys->i_selected_dev,
 852                                 (AudioDeviceIOProc)RenderCallbackSPDIF,
 853                                 (void *)p_aout );
 854     if( err != noErr )
 855     {
 856         msg_Err( p_aout, "AudioDeviceAddIOProc failed: [%4.4s]", (char *)&err );
 857         return VLC_FALSE;
 858     }
 859
 860     /* Check for the difference between the Device clock and mdate */
 861     p_sys->clock_diff = - (mtime_t)
 862         AudioConvertHostTimeToNanos( AudioGetCurrentHostTime() ) / 1000;
 863     p_sys->clock_diff += mdate();
 864
 865     /* Start device */
 866     err = AudioDeviceStart( p_sys->i_selected_dev, (AudioDeviceIOProc)RenderCallbackSPDIF );
 867     if( err != noErr )
 868     {
 869         msg_Err( p_aout, "AudioDeviceStart failed: [%4.4s]", (char *)&err );
 870
 871         err = AudioDeviceRemoveIOProc( p_sys->i_selected_dev,
 872                                        (AudioDeviceIOProc)RenderCallbackSPDIF );
 873         if( err != noErr )
 874         {
 875             msg_Err( p_aout, "AudioDeviceRemoveIOProc failed: [%4.4s]", (char *)&err );
 876         }
 877         return VLC_FALSE;
 878     }
 879
 880     return VLC_TRUE;
 881 }
 882
 883
 884 /*****************************************************************************
 885  * Close: Close HAL AudioUnit
 886  *****************************************************************************/
 887 static void Close( vlc_object_t * p_this )
 888 {
 889     aout_instance_t     *p_aout = (aout_instance_t *)p_this;
 890     struct aout_sys_t   *p_sys = p_aout->output.p_sys;
 891     OSStatus            err = noErr;
 892     UInt32              i_param_size = 0;
 893
 894     if( p_sys->au_unit )
 895     {
 896         verify_noerr( AudioOutputUnitStop( p_sys->au_unit ) );
 897         verify_noerr( AudioUnitUninitialize( p_sys->au_unit ) );
 898         verify_noerr( CloseComponent( p_sys->au_unit ) );
 899     }
 900
 901     if( p_sys->b_digital )
 902     {
 903         /* Stop device */
 904         err = AudioDeviceStop( p_sys->i_selected_dev,
 905                                (AudioDeviceIOProc)RenderCallbackSPDIF );
 906         if( err != noErr )
 907         {
 908             msg_Err( p_aout, "AudioDeviceStop failed: [%4.4s]", (char *)&err );
 909         }
 910
 911         /* Remove callback */
 912         err = AudioDeviceRemoveIOProc( p_sys->i_selected_dev,
 913                                        (AudioDeviceIOProc)RenderCallbackSPDIF );
 914         if( err != noErr )
 915         {
 916             msg_Err( p_aout, "AudioDeviceRemoveIOProc failed: [%4.4s]", (char *)&err );
 917         }
 918
 919         if( p_sys->b_revert )
 920         {
 921             struct timeval now;
 922             struct timespec timeout;
 923             struct { vlc_mutex_t lock; vlc_cond_t cond; } w;
 924
 925             /* Install the callback */
 926             err = AudioStreamAddPropertyListener( p_sys->i_stream_id, 0,
 927                                               kAudioStreamPropertyPhysicalFormat,
 928                                               StreamListener, (void *)&w );
 929             if( err != noErr )
 930             {
 931                 msg_Err( p_aout, "AudioStreamAddPropertyListener failed: [%4.4s]", (char *)&err );
 932             }
 933
 934             /* Condition because SetProperty is asynchronious */
 935             vlc_cond_init( p_aout, &w.cond );
 936             vlc_mutex_init( p_aout, &w.lock );
 937             vlc_mutex_lock( &w.lock );
 938
 939             msg_Dbg( p_aout, STREAM_FORMAT_MSG( "setting stream format: ", p_sys->sfmt_revert ) );
 940
 941             err = AudioStreamSetProperty( p_sys->i_stream_id, NULL, 0,
 942                                             kAudioStreamPropertyPhysicalFormat,
 943                                             sizeof( AudioStreamBasicDescription ),
 944                                             &p_sys->sfmt_revert );
 945
 946             if( err != noErr )
 947             {
 948                 msg_Err( p_aout, "Streamformat reverse failed: [%4.4s]", (char *)&err );
 949             }
 950
 951             gettimeofday( &now, NULL );
 952             timeout.tv_sec = now.tv_sec;
 953             timeout.tv_nsec = (now.tv_usec + 900000) * 1000;
 954
 955             if( pthread_cond_timedwait( &w.cond.cond, &w.lock.mutex, &timeout ) == ETIMEDOUT )
 956             {
 957                 msg_Dbg( p_aout, "reached timeout" );
 958             }
 959             vlc_mutex_unlock( &w.lock );
 960
 961             err = AudioStreamRemovePropertyListener( p_sys->i_stream_id, 0,
 962                                                 kAudioStreamPropertyPhysicalFormat,
 963                                                 StreamListener );
 964             if( err != noErr )
 965             {
 966                 msg_Err( p_aout, "AudioStreamRemovePropertyListener failed: [%4.4s]", (char *)&err );
 967             }
 968
 969             vlc_mutex_destroy( &w.lock );
 970             vlc_cond_destroy( &w.cond );
 971
 972             i_param_size = sizeof( AudioStreamBasicDescription );
 973             err = AudioStreamGetProperty( p_sys->i_stream_id, 0,
 974                                           kAudioStreamPropertyPhysicalFormat,
 975                                           &i_param_size,
 976                                           &p_sys->stream_format );
 977
 978             msg_Dbg( p_aout, STREAM_FORMAT_MSG( "actual format in use: ", p_sys->stream_format ) );
 979         }
 980         if( p_sys->b_changed_mixing && p_sys->sfmt_revert.mFormatID != kAudioFormat60958AC3 )
 981         {
 982             int b_mix;
 983             Boolean b_writeable;
 984             /* Revert mixable to true if we are allowed to */
 985             err = AudioDeviceGetPropertyInfo( p_sys->i_selected_dev, 0, FALSE, kAudioDevicePropertySupportsMixing,
 986                                         &i_param_size, &b_writeable );
 987
 988             err = AudioDeviceGetProperty( p_sys->i_selected_dev, 0, FALSE, kAudioDevicePropertySupportsMixing,
 989                                         &i_param_size, &b_mix );
 990
 991             if( !err && b_writeable )
 992             {
 993                 msg_Dbg( p_aout, "mixable is: %d", b_mix );
 994                 b_mix = 1;
 995                 err = AudioDeviceSetProperty( p_sys->i_selected_dev, 0, 0, FALSE,
 996                                     kAudioDevicePropertySupportsMixing, i_param_size, &b_mix );
 997             }
 998
 999             if( err != noErr )
1000             {
1001                 msg_Err( p_aout, "failed to set mixmode: [%4.4s]", (char *)&err );
1002             }
1003         }
1004     }
1005
1006     err = AudioHardwareRemovePropertyListener( kAudioHardwarePropertyDevices,
1007                                                HardwareListener );
1008
1009     if( err != noErr )
1010     {
1011         msg_Err( p_aout, "AudioHardwareRemovePropertyListener failed: [%4.4s]", (char *)&err );
1012     }
1013
1014     if( p_sys->i_hog_pid == getpid() )
1015     {
1016         p_sys->i_hog_pid = -1;
1017         i_param_size = sizeof( p_sys->i_hog_pid );
1018         err = AudioDeviceSetProperty( p_sys->i_selected_dev, 0, 0, FALSE,
1019                                          kAudioDevicePropertyHogMode, i_param_size, &p_sys->i_hog_pid );
1020         if( err != noErr ) msg_Err( p_aout, "Could not release hogmode: [%4.4s]", (char *)&err );
1021     }
1022
1023     if( p_sys ) free( p_sys );
1024 }
1025
1026 /*****************************************************************************
1027  * Play: nothing to do
1028  *****************************************************************************/
1029 static void Play( aout_instance_t * p_aout )
1030 {
1031 }
1032
1033
1034 /*****************************************************************************
1035  * Probe
1036  *****************************************************************************/
1037 static void Probe( aout_instance_t * p_aout )
1038 {
1039     OSStatus            err = noErr;
1040     UInt32              i = 0, i_param_size = 0;
1041     AudioDeviceID       devid_def = 0;
1042     AudioDeviceID       *p_devices = NULL;
1043     vlc_value_t         val, text;
1044
1045     struct aout_sys_t   *p_sys = p_aout->output.p_sys;
1046
1047     /* Get number of devices */
1048     err = AudioHardwareGetPropertyInfo( kAudioHardwarePropertyDevices,
1049                                         &i_param_size, NULL );
1050     if( err != noErr )
1051     {
1052         msg_Err( p_aout, "could not get number of devices: [%4.4s]", (char *)&err );
1053         goto error;
1054     }
1055
1056     p_sys->i_devices = i_param_size / sizeof( AudioDeviceID );
1057
1058     if( p_sys->i_devices < 1 )
1059     {
1060         msg_Err( p_aout, "no devices found" );
1061         goto error;
1062     }
1063
1064     msg_Dbg( p_aout, "system has [%ld] device(s)", p_sys->i_devices );
1065
1066     /* Allocate DeviceID array */
1067     p_devices = (AudioDeviceID*)malloc( sizeof(AudioDeviceID) * p_sys->i_devices );
1068     if( p_devices == NULL )
1069     {
1070         msg_Err( p_aout, "out of memory" );
1071         goto error;
1072     }
1073
1074     /* Populate DeviceID array */
1075     err = AudioHardwareGetProperty( kAudioHardwarePropertyDevices,
1076                                     &i_param_size, p_devices );
1077     if( err != noErr )
1078     {
1079         msg_Err( p_aout, "could not get the device ID's: [%4.4s]", (char *)&err );
1080         goto error;
1081     }
1082
1083     /* Find the ID of the default Device */
1084     i_param_size = sizeof( AudioDeviceID );
1085     err = AudioHardwareGetProperty( kAudioHardwarePropertyDefaultOutputDevice,
1086                                     &i_param_size, &devid_def );
1087     if( err != noErr )
1088     {
1089         msg_Err( p_aout, "could not get default audio device: [%4.4s]", (char *)&err );
1090         goto error;
1091     }
1092     p_sys->i_default_dev = devid_def;
1093
1094     var_Create( p_aout, "audio-device", VLC_VAR_INTEGER|VLC_VAR_HASCHOICE );
1095     text.psz_string = _("Audio Device");
1096     var_Change( p_aout, "audio-device", VLC_VAR_SETTEXT, &text, NULL );
1097
1098     for( i = 0; i < p_sys->i_devices; i++ )
1099     {
1100         char *psz_name;
1101         i_param_size = 0;
1102
1103         /* Retrieve the length of the device name */
1104         err = AudioDeviceGetPropertyInfo(
1105                     p_devices[i], 0, VLC_FALSE,
1106                     kAudioDevicePropertyDeviceName,
1107                     &i_param_size, NULL);
1108         if( err ) goto error;
1109
1110         /* Retrieve the name of the device */
1111         psz_name = (char *)malloc( i_param_size );
1112         err = AudioDeviceGetProperty(
1113                     p_devices[i], 0, VLC_FALSE,
1114                     kAudioDevicePropertyDeviceName,
1115                     &i_param_size, psz_name);
1116         if( err ) goto error;
1117
1118         msg_Dbg( p_aout, "DevID: %#lx  DevName: %s", p_devices[i], psz_name );
1119
1120         if( !AudioDeviceHasOutput( p_devices[i]) )
1121         {
1122             msg_Dbg( p_aout, "this device is INPUT only. skipping..." );
1123             continue;
1124         }
1125
1126         val.i_int = (int)p_devices[i];
1127         text.psz_string = strdup( psz_name );
1128         var_Change( p_aout, "audio-device", VLC_VAR_ADDCHOICE, &val, &text );
1129         if( p_sys->i_default_dev == p_devices[i] )
1130         {
1131             var_Change( p_aout, "audio-device", VLC_VAR_SETDEFAULT, &val, NULL );
1132             var_Set( p_aout, "audio-device", val );
1133         }
1134
1135         if( AudioDeviceSupportsDigital( p_aout, p_devices[i] ) )
1136         {
1137             val.i_int = (int)p_devices[i] | AOUT_VAR_SPDIF_FLAG;
1138             asprintf( &text.psz_string, "%s (Encoded Output)", psz_name );
1139             var_Change( p_aout, "audio-device", VLC_VAR_ADDCHOICE, &val, &text );
1140             if( p_sys->i_default_dev == p_devices[i] && config_GetInt( p_aout, "spdif" ) )
1141             {
1142                 var_Change( p_aout, "audio-device", VLC_VAR_SETDEFAULT, &val, NULL );
1143                 var_Set( p_aout, "audio-device", val );
1144             }
1145         }
1146
1147         free( psz_name);
1148     }
1149
1150     var_Get( p_aout->p_vlc, "macosx-audio-device", &val );
1151     msg_Dbg( p_aout, "device value override1: %#x", val.i_int );
1152     if( val.i_int > 0 )
1153     {
1154         msg_Dbg( p_aout, "device value override2: %#x", val.i_int );
1155         var_Change( p_aout, "audio-device", VLC_VAR_SETDEFAULT, &val, NULL );
1156         var_Set( p_aout, "audio-device", val );
1157     }
1158
1159     var_AddCallback( p_aout, "audio-device", AudioDeviceCallback, NULL );
1160
1161     /* attach a Listener so that we are notified of a change in the Device setup */
1162     err = AudioHardwareAddPropertyListener( kAudioHardwarePropertyDevices,
1163                                             HardwareListener,
1164                                             (void *)p_aout );
1165     if( err )
1166         goto error;
1167
1168     msg_Dbg( p_aout, "succesful finish of deviceslist" );
1169     if( p_devices ) free( p_devices );
1170     return;
1171
1172 error:
1173     var_Destroy( p_aout, "audio-device" );
1174     if( p_devices ) free( p_devices );
1175     return;
1176 }
1177
1178 /*****************************************************************************
1179  * AudioDeviceHasOutput: Checks if the Device actually provides any outputs at all
1180  *****************************************************************************/
1181 static int AudioDeviceHasOutput( AudioDeviceID i_dev_id )
1182 {
1183     UInt32                      dataSize;
1184     Boolean                     isWritable;
1185
1186     verify_noerr( AudioDeviceGetPropertyInfo( i_dev_id, 0, FALSE, kAudioDevicePropertyStreams, &dataSize, &isWritable) );
1187     if (dataSize == 0) return FALSE;
1188
1189     return TRUE;
1190 }
1191
1192 /*****************************************************************************
1193  * AudioDeviceSupportsDigital: Check i_dev_id for digital stream support.
1194  *****************************************************************************/
1195 static int AudioDeviceSupportsDigital( aout_instance_t *p_aout, AudioDeviceID i_dev_id )
1196 {
1197     OSStatus                    err = noErr;
1198     UInt32                      i_param_size = 0;
1199     AudioStreamID               *p_streams = NULL;
1200     int                         i = 0, i_streams = 0;
1201     vlc_bool_t                  b_return = VLC_FALSE;
1202
1203     /* Retrieve all the output streams */
1204     err = AudioDeviceGetPropertyInfo( i_dev_id, 0, FALSE,
1205                                       kAudioDevicePropertyStreams,
1206                                       &i_param_size, NULL );
1207     if( err != noErr )
1208     {
1209         msg_Err( p_aout, "could not get number of streams: [%4.4s]", (char *)&err );
1210         return VLC_FALSE;
1211     }
1212
1213     i_streams = i_param_size / sizeof( AudioStreamID );
1214     p_streams = (AudioStreamID *)malloc( i_param_size );
1215     if( p_streams == NULL )
1216     {
1217         msg_Err( p_aout, "Out of memory" );
1218         return VLC_ENOMEM;
1219     }
1220
1221     err = AudioDeviceGetProperty( i_dev_id, 0, FALSE,
1222                                     kAudioDevicePropertyStreams,
1223                                     &i_param_size, p_streams );
1224
1225     if( err != noErr )
1226     {
1227         msg_Err( p_aout, "could not get number of streams: [%4.4s]", (char *)&err );
1228         return VLC_FALSE;
1229     }
1230
1231     for( i = 0; i < i_streams; i++ )
1232     {
1233         if( AudioStreamSupportsDigital( p_aout, p_streams[i] ) )
1234             b_return = VLC_TRUE;
1235     }
1236
1237     if( p_streams ) free( p_streams );
1238     return b_return;
1239 }
1240
1241 /*****************************************************************************
1242  * AudioStreamSupportsDigital: Check i_stream_id for digital stream support.
1243  *****************************************************************************/
1244 static int AudioStreamSupportsDigital( aout_instance_t *p_aout, AudioStreamID i_stream_id )
1245 {
1246     OSStatus                    err = noErr;
1247     UInt32                      i_param_size = 0;
1248     AudioStreamBasicDescription *p_format_list = NULL;
1249     int                         i = 0, i_formats = 0;
1250     vlc_bool_t                  b_return = VLC_FALSE;
1251
1252     /* Retrieve all the stream formats supported by each output stream */
1253     err = AudioStreamGetPropertyInfo( i_stream_id, 0,
1254                                       kAudioStreamPropertyPhysicalFormats,
1255                                       &i_param_size, NULL );
1256     if( err != noErr )
1257     {
1258         msg_Err( p_aout, "could not get number of streamformats: [%4.4s]", (char *)&err );
1259         return VLC_FALSE;
1260     }
1261
1262     i_formats = i_param_size / sizeof( AudioStreamBasicDescription );
1263     msg_Dbg( p_aout, "number of formats: %d", i_formats );
1264     p_format_list = (AudioStreamBasicDescription *)malloc( i_param_size );
1265     if( p_format_list == NULL )
1266     {
1267         msg_Err( p_aout, "Could not malloc the memory" );
1268         return VLC_FALSE;
1269     }
1270
1271     err = AudioStreamGetProperty( i_stream_id, 0,
1272                                       kAudioStreamPropertyPhysicalFormats,
1273                                       &i_param_size, p_format_list );
1274     if( err != noErr )
1275     {
1276         msg_Err( p_aout, "could not get the list of streamformats: [%4.4s]", (char *)&err );
1277         free( p_format_list);
1278         p_format_list = NULL;
1279         return VLC_FALSE;
1280     }
1281
1282     for( i = 0; i < i_formats; i++ )
1283     {
1284         msg_Dbg( p_aout, STREAM_FORMAT_MSG( "supported format: ", p_format_list[i] ) );
1285
1286         if( p_format_list[i].mFormatID == 'IAC3' ||
1287                   p_format_list[i].mFormatID == kAudioFormat60958AC3 )
1288         {
1289             b_return = VLC_TRUE;
1290         }
1291     }
1292
1293     if( p_format_list ) free( p_format_list );
1294     return b_return;
1295 }
1296
1297 /*****************************************************************************
1298  * RenderCallbackAnalog: This function is called everytime the AudioUnit wants
1299  * us to provide some more audio data.
1300  * Don't print anything during normal playback, calling blocking function from
1301  * this callback is not allowed.
1302  *****************************************************************************/
1303 static OSStatus RenderCallbackAnalog( vlc_object_t *_p_aout,
1304                                       AudioUnitRenderActionFlags *ioActionFlags,
1305                                       const AudioTimeStamp *inTimeStamp,
1306                                       unsigned int inBusNummer,
1307                                       unsigned int inNumberFrames,
1308                                       AudioBufferList *ioData )
1309 {
1310     AudioTimeStamp  host_time;
1311     mtime_t         current_date = 0;
1312     uint32_t        i_mData_bytes = 0;
1313
1314     aout_instance_t * p_aout = (aout_instance_t *)_p_aout;
1315     struct aout_sys_t * p_sys = p_aout->output.p_sys;
1316
1317     host_time.mFlags = kAudioTimeStampHostTimeValid;
1318     AudioDeviceTranslateTime( p_sys->i_selected_dev, inTimeStamp, &host_time );
1319
1320     /* Check for the difference between the Device clock and mdate */
1321     p_sys->clock_diff = - (mtime_t)
1322         AudioConvertHostTimeToNanos( AudioGetCurrentHostTime() ) / 1000;
1323     p_sys->clock_diff += mdate();
1324
1325     current_date = p_sys->clock_diff +
1326                    AudioConvertHostTimeToNanos( host_time.mHostTime ) / 1000;
1327                    //- ((mtime_t) 1000000 / p_aout->output.output.i_rate * 31 ); // 31 = Latency in Frames. retrieve somewhere
1328
1329     if( ioData == NULL && ioData->mNumberBuffers < 1 )
1330     {
1331         msg_Err( p_aout, "no iodata or buffers");
1332         return 0;
1333     }
1334     if( ioData->mNumberBuffers > 1 )
1335         msg_Err( p_aout, "well this is weird. seems like there is more than one buffer..." );
1336
1337
1338     if( p_sys->i_total_bytes > 0 )
1339     {
1340         i_mData_bytes = __MIN( p_sys->i_total_bytes - p_sys->i_read_bytes, ioData->mBuffers[0].mDataByteSize );
1341         p_aout->p_vlc->pf_memcpy( ioData->mBuffers[0].mData, &p_sys->p_remainder_buffer[p_sys->i_read_bytes], i_mData_bytes );
1342         p_sys->i_read_bytes += i_mData_bytes;
1343         current_date += (mtime_t) ( (mtime_t) 1000000 / p_aout->output.output.i_rate ) *
1344                         ( i_mData_bytes / 4 / aout_FormatNbChannels( &p_aout->output.output )  ); // 4 is fl32 specific
1345
1346         if( p_sys->i_read_bytes >= p_sys->i_total_bytes )
1347             p_sys->i_read_bytes = p_sys->i_total_bytes = 0;
1348     }
1349
1350     while( i_mData_bytes < ioData->mBuffers[0].mDataByteSize )
1351     {
1352         /* We don't have enough data yet */
1353         aout_buffer_t * p_buffer;
1354         p_buffer = aout_OutputNextBuffer( p_aout, current_date , VLC_FALSE );
1355
1356         if( p_buffer != NULL )
1357         {
1358             uint32_t i_second_mData_bytes = __MIN( p_buffer->i_nb_bytes, ioData->mBuffers[0].mDataByteSize - i_mData_bytes );
1359
1360             p_aout->p_vlc->pf_memcpy( (uint8_t *)ioData->mBuffers[0].mData + i_mData_bytes, p_buffer->p_buffer, i_second_mData_bytes );
1361             i_mData_bytes += i_second_mData_bytes;
1362
1363             if( i_mData_bytes >= ioData->mBuffers[0].mDataByteSize )
1364             {
1365                 p_sys->i_total_bytes = p_buffer->i_nb_bytes - i_second_mData_bytes;
1366                 p_aout->p_vlc->pf_memcpy( p_sys->p_remainder_buffer, &p_buffer->p_buffer[i_second_mData_bytes], p_sys->i_total_bytes );
1367             }
1368             else
1369             {
1370                 // update current_date
1371                 current_date += (mtime_t) ( (mtime_t) 1000000 / p_aout->output.output.i_rate ) *
1372                                 ( i_second_mData_bytes / 4 / aout_FormatNbChannels( &p_aout->output.output )  ); // 4 is fl32 specific
1373             }
1374             aout_BufferFree( p_buffer );
1375         }
1376         else
1377         {
1378              p_aout->p_vlc->pf_memset( (uint8_t *)ioData->mBuffers[0].mData +i_mData_bytes, 0, ioData->mBuffers[0].mDataByteSize - i_mData_bytes );
1379              i_mData_bytes += ioData->mBuffers[0].mDataByteSize - i_mData_bytes;
1380         }
1381     }
1382     return( noErr );
1383 }
1384
1385 /*****************************************************************************
1386  * RenderCallbackSPDIF: callback for SPDIF audio output
1387  *****************************************************************************/
1388 static OSStatus RenderCallbackSPDIF( AudioDeviceID inDevice,
1389                                     const AudioTimeStamp * inNow,
1390                                     const void * inInputData,
1391                                     const AudioTimeStamp * inInputTime,
1392                                     AudioBufferList * outOutputData,
1393                                     const AudioTimeStamp * inOutputTime,
1394                                     void * threadGlobals )
1395 {
1396     aout_buffer_t * p_buffer;
1397     mtime_t         current_date;
1398
1399     aout_instance_t * p_aout = (aout_instance_t *)threadGlobals;
1400     struct aout_sys_t * p_sys = p_aout->output.p_sys;
1401
1402     /* Check for the difference between the Device clock and mdate */
1403     p_sys->clock_diff = - (mtime_t)
1404         AudioConvertHostTimeToNanos( inNow->mHostTime ) / 1000;
1405     p_sys->clock_diff += mdate();
1406
1407     current_date = p_sys->clock_diff +
1408                    AudioConvertHostTimeToNanos( inOutputTime->mHostTime ) / 1000;
1409                    //- ((mtime_t) 1000000 / p_aout->output.output.i_rate * 31 ); // 31 = Latency in Frames. retrieve somewhere
1410
1411     p_buffer = aout_OutputNextBuffer( p_aout, current_date, VLC_TRUE );
1412
1413 #define BUFFER outOutputData->mBuffers[p_sys->i_stream_index]
1414     if( p_buffer != NULL )
1415     {
1416         if( (int)BUFFER.mDataByteSize != (int)p_buffer->i_nb_bytes)
1417             msg_Warn( p_aout, "bytesize: %d nb_bytes: %d", (int)BUFFER.mDataByteSize, (int)p_buffer->i_nb_bytes );
1418
1419         /* move data into output data buffer */
1420         p_aout->p_vlc->pf_memcpy( BUFFER.mData,
1421                                   p_buffer->p_buffer, p_buffer->i_nb_bytes );
1422         aout_BufferFree( p_buffer );
1423     }
1424     else
1425     {
1426         p_aout->p_vlc->pf_memset( BUFFER.mData, 0, BUFFER.mDataByteSize );
1427     }
1428 #undef BUFFER
1429
1430     return( noErr );
1431 }
1432
1433 /*****************************************************************************
1434  * HardwareListener: Warns us of changes in the list of registered devices
1435  *****************************************************************************/
1436 static OSStatus HardwareListener( AudioHardwarePropertyID inPropertyID,
1437                                   void * inClientData )
1438 {
1439     OSStatus err = noErr;
1440     aout_instance_t     *p_aout = (aout_instance_t *)inClientData;
1441
1442     switch( inPropertyID )
1443     {
1444         case kAudioHardwarePropertyDevices:
1445         {
1446             /* something changed in the list of devices */
1447             /* We trigger the audio-device's aout_ChannelsRestart callback */
1448             var_Change( p_aout, "audio-device", VLC_VAR_TRIGGER_CALLBACKS, NULL, NULL );
1449             var_Destroy( p_aout, "audio-device" );
1450         }
1451         break;
1452     }
1453
1454     return( err );
1455 }
1456
1457 /*****************************************************************************
1458  * StreamListener
1459  *****************************************************************************/
1460 static OSStatus StreamListener( AudioStreamID inStream,
1461                                 UInt32 inChannel,
1462                                 AudioDevicePropertyID inPropertyID,
1463                                 void * inClientData )
1464 {
1465     OSStatus err = noErr;
1466     struct { vlc_mutex_t lock; vlc_cond_t cond; } * w = inClientData;
1467
1468     switch( inPropertyID )
1469     {
1470         case kAudioStreamPropertyPhysicalFormat:
1471             vlc_mutex_lock( &w->lock );
1472             vlc_cond_signal( &w->cond );
1473             vlc_mutex_unlock( &w->lock );
1474             break;
1475
1476         default:
1477             break;
1478     }
1479     return( err );
1480 }
1481
1482 /*****************************************************************************
1483  * AudioDeviceCallback: Callback triggered when the audio-device variable is changed
1484  *****************************************************************************/
1485 static int AudioDeviceCallback( vlc_object_t *p_this, const char *psz_variable,
1486                      vlc_value_t old_val, vlc_value_t new_val, void *param )
1487 {
1488     aout_instance_t *p_aout = (aout_instance_t *)p_this;
1489     var_Set( p_aout->p_vlc, "macosx-audio-device", new_val );
1490     msg_Dbg( p_aout, "Set Device: %#x", new_val.i_int );
1491     return aout_ChannelsRestart( p_this, psz_variable, old_val, new_val, param );
1492 }
1493