libhb/work.c

   1 /* $Id: work.c,v 1.43 2005/03/17 16:38:49 titer Exp $
   2
   3    This file is part of the HandBrake source code.
   4    Homepage: <http://handbrake.m0k.org/>.
   5    It may be used under the terms of the GNU General Public License. */
   6
   7 #include "hb.h"
   8 #include "a52dec/a52.h"
   9 #include "dca.h"
  10
  11 typedef struct
  12 {
  13     hb_list_t * jobs;
  14     hb_job_t  ** current_job;
  15     int         cpu_count;
  16     int       * error;
  17     volatile int * die;
  18
  19 } hb_work_t;
  20
  21 static void work_func();
  22 static void do_job( hb_job_t *, int cpu_count );
  23 static void work_loop( void * );
  24
  25 #define FIFO_CPU_MULT 8
  26
  27 /**
  28  * Allocates work object and launches work thread with work_func.
  29  * @param jobs Handle to hb_list_t.
  30  * @param cpu_count Humber of CPUs found in system.
  31  * @param die Handle to user inititated exit indicator.
  32  * @param error Handle to error indicator.
  33  */
  34 hb_thread_t * hb_work_init( hb_list_t * jobs, int cpu_count,
  35                             volatile int * die, int * error, hb_job_t ** job )
  36 {
  37     hb_work_t * work = calloc( sizeof( hb_work_t ), 1 );
  38
  39     work->jobs      = jobs;
  40     work->current_job = job;
  41     work->cpu_count = cpu_count;
  42     work->die       = die;
  43     work->error     = error;
  44
  45     return hb_thread_init( "work", work_func, work, HB_LOW_PRIORITY );
  46 }
  47
  48 /**
  49  * Iterates through job list and calls do_job for each job.
  50  * @param _work Handle work object.
  51  */
  52 static void work_func( void * _work )
  53 {
  54     hb_work_t  * work = _work;
  55     hb_job_t   * job;
  56
  57     hb_log( "%d job(s) to process", hb_list_count( work->jobs ) );
  58
  59     while( !*work->die && ( job = hb_list_item( work->jobs, 0 ) ) )
  60     {
  61         hb_list_rem( work->jobs, job );
  62         job->die = work->die;
  63         *(work->current_job) = job;
  64         do_job( job, work->cpu_count );
  65         *(work->current_job) = NULL;
  66     }
  67
  68     *(work->error) = HB_ERROR_NONE;
  69
  70     free( work );
  71 }
  72
  73 static hb_work_object_t * getWork( int id )
  74 {
  75     hb_work_object_t * w;
  76     for( w = hb_objects; w; w = w->next )
  77     {
  78         if( w->id == id )
  79         {
  80             return w;
  81         }
  82     }
  83     return NULL;
  84 }
  85
  86 /**
  87  * Job initialization rountine.
  88  * Initializes fifos.
  89  * Creates work objects for synchronizer, video decoder, video renderer, video decoder, audio decoder, audio encoder, reader, muxer.
  90  * Launches thread for each work object with work_loop.
  91  * Loops while monitoring status of work threads and fifos.
  92  * Exits loop when conversion is done and fifos are empty.
  93  * Closes threads and frees fifos.
  94  * @param job Handle work hb_job_t.
  95  * @param cpu_count number of CPUs found in system.
  96  */
  97 static void do_job( hb_job_t * job, int cpu_count )
  98 {
  99     hb_title_t    * title;
 100     int             i, j;
 101     hb_work_object_t * w;
 102
 103     /* FIXME: This feels really hackish, anything better? */
 104     hb_work_object_t * audio_w = NULL;
 105     hb_work_object_t * sub_w = NULL;
 106
 107     hb_audio_t   * audio;
 108     hb_subtitle_t * subtitle;
 109     int done;
 110     unsigned int subtitle_highest = 0;
 111     unsigned int subtitle_highest_id = 0;
 112     unsigned int subtitle_lowest = -1;
 113     unsigned int subtitle_lowest_id = 0;
 114     unsigned int subtitle_forced_id = 0;
 115     unsigned int subtitle_hit = 0;
 116
 117     title = job->title;
 118
 119     job->list_work = hb_list_init();
 120
 121     hb_log( "starting job" );
 122     hb_log( " + device %s", title->dvd );
 123     hb_log( " + title %d, chapter(s) %d to %d", title->index,
 124             job->chapter_start, job->chapter_end );
 125     if ( job->pixel_ratio == 1 )
 126     {
 127         /* Correct the geometry of the output movie when using PixelRatio */
 128         job->height=title->height-job->crop[0]-job->crop[1];
 129         job->width=title->width-job->crop[2]-job->crop[3];
 130     }
 131     else if ( job->pixel_ratio == 2 )
 132     {
 133
 134         /* While keeping the DVD storage aspect, resize the job width and height
 135            so they fit into the user's specified dimensions. */
 136         hb_set_anamorphic_size(job, &job->width, &job->height, &job->pixel_aspect_width, &job->pixel_aspect_height);
 137     }
 138
 139         /* Keep width and height within these boundaries,
 140            but ignore for "loose" anamorphic encodes, for
 141            which this stuff is covered in the pixel_ratio
 142            section right above.*/
 143         if (job->maxHeight && (job->height > job->maxHeight) && (job->pixel_ratio != 2))
 144         {
 145                 job->height = job->maxHeight;
 146                 hb_fix_aspect( job, HB_KEEP_HEIGHT );
 147                 hb_log("Height out of bounds, scaling down to %i", job->maxHeight);
 148                 hb_log("New dimensions %i * %i", job->width, job->height);
 149         }
 150         if (job->maxWidth && (job->width > job->maxWidth) && (job->pixel_ratio != 2))
 151         {
 152                 job->width = job->maxWidth;
 153                 hb_fix_aspect( job, HB_KEEP_WIDTH );
 154                 hb_log("Width out of bounds, scaling down to %i", job->maxWidth);
 155                 hb_log("New dimensions %i * %i", job->width, job->height);
 156         }
 157
 158     hb_log( " + %dx%d -> %dx%d, crop %d/%d/%d/%d",
 159             title->width, title->height, job->width, job->height,
 160             job->crop[0], job->crop[1], job->crop[2], job->crop[3] );
 161
 162     if ( job->grayscale )
 163         hb_log( " + grayscale mode" );
 164
 165     if ( job->vfr )
 166     {
 167         int detelecine_present = 0;
 168         if ( job->filters )
 169         {
 170             for( i = 0; i < hb_list_count( job->filters ); i++ )
 171             {
 172                 hb_filter_object_t * filter = hb_list_item( job->filters, i );
 173                 if (filter->id == FILTER_DETELECINE)
 174                     detelecine_present = 1;
 175             }
 176         }
 177
 178         if (!detelecine_present)
 179         {
 180             /* Allocate the filter. */
 181             hb_filter_object_t * filter =  malloc( sizeof( hb_filter_object_t ) );
 182
 183             /* Copy in the contents of the detelecine struct. */
 184             memcpy( filter, &hb_filter_detelecine, sizeof( hb_filter_object_t ) );
 185
 186             /* Set the name to a copy of the template name so render.c has something to free. */
 187             filter->name = strdup(hb_filter_detelecine.name);
 188
 189             /* Add it to the list. */
 190             hb_list_add( job->filters, filter );
 191
 192             hb_log("work: VFR mode -- adding detelecine filter");
 193         }
 194     }
 195
 196     if( job->filters )
 197     {
 198         hb_log(" + filters");
 199         for( i = 0; i < hb_list_count( job->filters ); i++ )
 200         {
 201             hb_filter_object_t * filter = hb_list_item( job->filters, i );
 202             if (filter->settings)
 203                 hb_log("   + %s (%s)", filter->name, filter->settings);
 204             else
 205                 hb_log("   + %s (default settings)", filter->name);
 206         }
 207     }
 208
 209     if( job->vfr)
 210     {
 211         hb_log( " + video frame rate: variable (detected %.3f fps)", (float) job->vrate /
 212             (float) job->vrate_base );
 213     }
 214     else
 215     {
 216         hb_log( " + video frame rate: %.3f fps", (float) job->vrate / (float) job->vrate_base);
 217     }
 218
 219     if( job->vquality >= 0.0 && job->vquality <= 1.0 )
 220     {
 221         hb_log( " + video quality %.2f", job->vquality );
 222     }
 223     else
 224     {
 225         hb_log( " + video bitrate %d kbps, pass %d", job->vbitrate, job->pass );
 226     }
 227
 228         hb_log (" + PixelRatio: %d, width:%d, height: %d",job->pixel_ratio,job->width, job->height);
 229     job->fifo_mpeg2  = hb_fifo_init( 2048 );
 230     job->fifo_raw    = hb_fifo_init( FIFO_CPU_MULT * cpu_count );
 231     job->fifo_sync   = hb_fifo_init( FIFO_CPU_MULT * cpu_count );
 232     job->fifo_render = hb_fifo_init( FIFO_CPU_MULT * cpu_count );
 233     job->fifo_mpeg4  = hb_fifo_init( FIFO_CPU_MULT * cpu_count );
 234
 235     /* Synchronization */
 236     hb_list_add( job->list_work, ( w = getWork( WORK_SYNC ) ) );
 237     w->fifo_in  = NULL;
 238     w->fifo_out = NULL;
 239
 240     /* Video decoder */
 241     hb_list_add( job->list_work, ( w = getWork( WORK_DECMPEG2 ) ) );
 242     w->fifo_in  = job->fifo_mpeg2;
 243     w->fifo_out = job->fifo_raw;
 244
 245     /* Video renderer */
 246     hb_list_add( job->list_work, ( w = getWork( WORK_RENDER ) ) );
 247     w->fifo_in  = job->fifo_sync;
 248     w->fifo_out = job->fifo_render;
 249
 250     /* Video encoder */
 251     switch( job->vcodec )
 252     {
 253         case HB_VCODEC_FFMPEG:
 254             hb_log( " + encoder FFmpeg" );
 255             w = getWork( WORK_ENCAVCODEC );
 256             break;
 257         case HB_VCODEC_XVID:
 258             hb_log( " + encoder XviD" );
 259             w = getWork( WORK_ENCXVID );
 260             break;
 261         case HB_VCODEC_X264:
 262             hb_log( " + encoder x264" );
 263             if( job->x264opts != NULL && *job->x264opts != '\0' )
 264                 hb_log( "   + x264 options: %s", job->x264opts);
 265             w = getWork( WORK_ENCX264 );
 266             break;
 267     }
 268     w->fifo_in  = job->fifo_render;
 269     w->fifo_out = job->fifo_mpeg4;
 270     w->config   = &job->config;
 271
 272     hb_list_add( job->list_work, w );
 273
 274     if( job->select_subtitle && !job->indepth_scan )
 275     {
 276         /*
 277          * Must be second pass of a two pass with subtitle scan enabled, so
 278          * add the subtitle that we found on the first pass for use in this
 279          * pass.
 280          */
 281         if (*(job->select_subtitle))
 282         {
 283             hb_list_add( title->list_subtitle, *( job->select_subtitle ) );
 284         }
 285     }
 286
 287     for( i=0; i < hb_list_count(title->list_subtitle); i++ )
 288     {
 289         subtitle =  hb_list_item( title->list_subtitle, i );
 290
 291         if( subtitle )
 292         {
 293             hb_log( " + subtitle %x, %s", subtitle->id, subtitle->lang );
 294
 295             subtitle->fifo_in  = hb_fifo_init( FIFO_CPU_MULT * cpu_count );
 296             subtitle->fifo_raw = hb_fifo_init( FIFO_CPU_MULT * cpu_count );
 297
 298             /*
 299              * Disable forced subtitles if we didn't find any in the scan
 300              * so that we display normal subtitles instead.
 301              *
 302              * select_subtitle implies that we did a scan.
 303              */
 304             if( !job->indepth_scan && job->subtitle_force &&
 305                 job->select_subtitle )
 306             {
 307                 if( subtitle->forced_hits == 0 )
 308                 {
 309                     job->subtitle_force = 0;
 310                 }
 311             }
 312
 313             if (!job->indepth_scan || job->subtitle_force) {
 314                 /*
 315                  * Don't add threads for subtitles when we are scanning, unless
 316                  * looking for forced subtitles.
 317                  */
 318                 if( sub_w != NULL )
 319                 {
 320                     /*
 321                      * Need to copy the prior subtitle structure so that we
 322                      * don't overwrite the fifos.
 323                      */
 324                     sub_w = calloc( sizeof( hb_work_object_t ), 1 );
 325                     sub_w = memcpy( sub_w, w, sizeof( hb_work_object_t ));
 326                 } else {
 327                     w = sub_w = getWork( WORK_DECSUB );
 328                 }
 329                 hb_list_add( job->list_work, sub_w );
 330                 sub_w->fifo_in  = subtitle->fifo_in;
 331                 sub_w->fifo_out = subtitle->fifo_raw;
 332             }
 333         }
 334     }
 335
 336     if( job->acodec & HB_ACODEC_AC3 )
 337     {
 338         hb_log( " + audio AC3 passthrough" );
 339
 340         /* Hard set correct sample rate for AC3 */
 341         job->arate = 48000;
 342     }
 343     else
 344     {
 345         hb_log( " + audio %d kbps, %d Hz", job->abitrate, job->arate );
 346         hb_log( " + encoder %s", ( job->acodec & HB_ACODEC_FAAC ) ?
 347                 "faac" : ( ( job->acodec & HB_ACODEC_LAME ) ? "lame" :
 348                 "vorbis" ) );
 349     }
 350
 351     if ( job->dynamic_range_compression )
 352         hb_log(" + dynamic range compression: %f", job->dynamic_range_compression);
 353
 354     /* if we are doing AC3 passthru, then remove any non-AC3 audios from the job */
 355     /* otherwise, Bad Things will happen */
 356     for( i = 0; i < hb_list_count( title->list_audio ); )
 357     {
 358         audio = hb_list_item( title->list_audio, i );
 359         if( ( job->acodec & HB_ACODEC_AC3 ) && ( audio->codec != HB_ACODEC_AC3 ) )
 360         {
 361             hb_list_rem( title->list_audio, audio );
 362             free( audio );
 363             continue;
 364         }
 365         i++;
 366     }
 367
 368     for( i = 0; i < hb_list_count( title->list_audio ); i++ )
 369     {
 370         audio = hb_list_item( title->list_audio, i );
 371         hb_log( "   + %x, %s", audio->id, audio->lang );
 372
 373                 /* sense-check the current mixdown options */
 374
 375                 /* log the requested mixdown */
 376                 for (j = 0; j < hb_audio_mixdowns_count; j++) {
 377                         if (hb_audio_mixdowns[j].amixdown == job->audio_mixdowns[i]) {
 378                                 hb_log( "     + Requested mixdown: %s (%s)", hb_audio_mixdowns[j].human_readable_name, hb_audio_mixdowns[j].internal_name );
 379                                 break;
 380                         }
 381                 }
 382
 383         /* sense-check the requested mixdown */
 384
 385         /* audioCodecsSupportMono and audioCodecsSupport6Ch are the same for now,
 386            but this may change in the future, so they are separated for flexibility */
 387         int audioCodecsSupportMono = ((audio->codec == HB_ACODEC_AC3 ||
 388             audio->codec == HB_ACODEC_DCA) && (job->acodec == HB_ACODEC_FAAC || job->acodec == HB_ACODEC_VORBIS));
 389         int audioCodecsSupport6Ch =  ((audio->codec == HB_ACODEC_AC3 ||
 390             audio->codec == HB_ACODEC_DCA) && (job->acodec == HB_ACODEC_FAAC || job->acodec == HB_ACODEC_VORBIS));
 391
 392         /* find out what the format of our source audio is */
 393         switch (audio->input_channel_layout & HB_INPUT_CH_LAYOUT_DISCRETE_NO_LFE_MASK) {
 394
 395             /* mono sources */
 396             case HB_INPUT_CH_LAYOUT_MONO:
 397                 /* regardless of what stereo mixdown we've requested, a mono source always get mixed down
 398                 to mono if we can, and mixed up to stereo if we can't */
 399                 if (job->audio_mixdowns[i] == HB_AMIXDOWN_MONO && audioCodecsSupportMono == 1) {
 400                     job->audio_mixdowns[i] = HB_AMIXDOWN_MONO;
 401                 } else {
 402                     job->audio_mixdowns[i] = HB_AMIXDOWN_STEREO;
 403                 }
 404                 break;
 405
 406             /* stereo input */
 407             case HB_INPUT_CH_LAYOUT_STEREO:
 408                 /* if we've requested a mono mixdown, and it is supported, then do the mix */
 409                 /* use stereo if not supported */
 410                 if (job->audio_mixdowns[i] == HB_AMIXDOWN_MONO && audioCodecsSupportMono == 0) {
 411                     job->audio_mixdowns[i] = HB_AMIXDOWN_STEREO;
 412                 /* otherwise, preserve stereo regardless of if we requested something higher */
 413                 } else if (job->audio_mixdowns[i] > HB_AMIXDOWN_STEREO) {
 414                     job->audio_mixdowns[i] = HB_AMIXDOWN_STEREO;
 415                 }
 416                 break;
 417
 418             /* dolby (DPL1 aka Dolby Surround = 4.0 matrix-encoded) input */
 419             /* the A52 flags don't allow for a way to distinguish between DPL1 and DPL2 on a DVD,
 420                so we always assume a DPL1 source for A52_DOLBY */
 421             case HB_INPUT_CH_LAYOUT_DOLBY:
 422                 /* if we've requested a mono mixdown, and it is supported, then do the mix */
 423                 /* preserve dolby if not supported */
 424                 if (job->audio_mixdowns[i] == HB_AMIXDOWN_MONO && audioCodecsSupportMono == 0) {
 425                     job->audio_mixdowns[i] = HB_AMIXDOWN_DOLBY;
 426                 /* otherwise, preserve dolby even if we requested something higher */
 427                 /* a stereo mixdown will still be honoured here */
 428                 } else if (job->audio_mixdowns[i] > HB_AMIXDOWN_DOLBY) {
 429                     job->audio_mixdowns[i] = HB_AMIXDOWN_DOLBY;
 430                 }
 431                 break;
 432
 433             /* 3F/2R input */
 434             case HB_INPUT_CH_LAYOUT_3F2R:
 435                 /* if we've requested a mono mixdown, and it is supported, then do the mix */
 436                 /* use dpl2 if not supported */
 437                 if (job->audio_mixdowns[i] == HB_AMIXDOWN_MONO && audioCodecsSupportMono == 0) {
 438                     job->audio_mixdowns[i] = HB_AMIXDOWN_DOLBYPLII;
 439                 } else {
 440                     /* check if we have 3F2R input and also have an LFE - i.e. we have a 5.1 source) */
 441                     if (audio->input_channel_layout & HB_INPUT_CH_LAYOUT_HAS_LFE) {
 442                         /* we have a 5.1 source */
 443                         /* if we requested 6ch, but our audio format doesn't support it, then mix to DPLII instead */
 444                         if (job->audio_mixdowns[i] == HB_AMIXDOWN_6CH && audioCodecsSupport6Ch == 0) {
 445                             job->audio_mixdowns[i] = HB_AMIXDOWN_DOLBYPLII;
 446                         }
 447                     } else {
 448                         /* we have a 5.0 source, so we can't do 6ch conversion
 449                         default to DPL II instead */
 450                         if (job->audio_mixdowns[i] > HB_AMIXDOWN_DOLBYPLII) {
 451                             job->audio_mixdowns[i] = HB_AMIXDOWN_DOLBYPLII;
 452                         }
 453                     }
 454                 }
 455                 /* all other mixdowns will have been preserved here */
 456                 break;
 457
 458             /* 3F/1R input */
 459             case HB_INPUT_CH_LAYOUT_3F1R:
 460                 /* if we've requested a mono mixdown, and it is supported, then do the mix */
 461                 /* use dpl1 if not supported */
 462                 if (job->audio_mixdowns[i] == HB_AMIXDOWN_MONO && audioCodecsSupportMono == 0) {
 463                     job->audio_mixdowns[i] = HB_AMIXDOWN_DOLBY;
 464                 } else {
 465                     /* we have a 4.0 or 4.1 source, so we can't do DPLII or 6ch conversion
 466                     default to DPL I instead */
 467                     if (job->audio_mixdowns[i] > HB_AMIXDOWN_DOLBY) {
 468                         job->audio_mixdowns[i] = HB_AMIXDOWN_DOLBY;
 469                     }
 470                 }
 471                 /* all other mixdowns will have been preserved here */
 472                 break;
 473
 474             default:
 475                 /* if we've requested a mono mixdown, and it is supported, then do the mix */
 476                 if (job->audio_mixdowns[i] == HB_AMIXDOWN_MONO && audioCodecsSupportMono == 1) {
 477                     job->audio_mixdowns[i] = HB_AMIXDOWN_MONO;
 478                 /* mix everything else down to stereo */
 479                 } else {
 480                     job->audio_mixdowns[i] = HB_AMIXDOWN_STEREO;
 481                 }
 482
 483         }
 484
 485                 /* log the output mixdown */
 486                 for (j = 0; j < hb_audio_mixdowns_count; j++) {
 487                         if (hb_audio_mixdowns[j].amixdown == job->audio_mixdowns[i]) {
 488                                 hb_log( "     + Actual mixdown: %s (%s)", hb_audio_mixdowns[j].human_readable_name, hb_audio_mixdowns[j].internal_name );
 489                                 break;
 490                         }
 491                 }
 492
 493                 /* we now know we have a valid mixdown for the input source and the audio output format */
 494                 /* remember the mixdown for this track */
 495                 audio->amixdown = job->audio_mixdowns[i];
 496
 497         audio->config.vorbis.language = audio->lang_simple;
 498
 499                 /* set up the audio work structures */
 500         audio->fifo_in   = hb_fifo_init( 2048 );
 501         audio->fifo_raw  = hb_fifo_init( FIFO_CPU_MULT * cpu_count );
 502         audio->fifo_sync = hb_fifo_init( FIFO_CPU_MULT * cpu_count );
 503         audio->fifo_out  = hb_fifo_init( FIFO_CPU_MULT * cpu_count );
 504
 505         switch( audio->codec )
 506         {
 507             case HB_ACODEC_AC3:
 508                 w = getWork( WORK_DECA52 );
 509                 break;
 510             case HB_ACODEC_DCA:
 511                 w = getWork( WORK_DECDCA );
 512                 break;
 513             case HB_ACODEC_MPGA:
 514                 w = getWork( WORK_DECAVCODEC );
 515                 break;
 516             case HB_ACODEC_LPCM:
 517                 w = getWork( WORK_DECLPCM );
 518                 break;
 519         }
 520         w->fifo_in       = audio->fifo_in;
 521         w->fifo_out      = audio->fifo_raw;
 522         w->config        = &audio->config;
 523         w->amixdown      = audio->amixdown;
 524         w->source_acodec = audio->codec;
 525
 526         /* FIXME: This feels really hackish, anything better? */
 527         audio_w = calloc( sizeof( hb_work_object_t ), 1 );
 528         audio_w = memcpy( audio_w, w, sizeof( hb_work_object_t ));
 529
 530         hb_list_add( job->list_work, audio_w );
 531
 532         switch( job->acodec )
 533         {
 534             case HB_ACODEC_FAAC:
 535                 w = getWork( WORK_ENCFAAC );
 536                 break;
 537             case HB_ACODEC_LAME:
 538                 w = getWork( WORK_ENCLAME );
 539                 break;
 540             case HB_ACODEC_VORBIS:
 541                 w = getWork( WORK_ENCVORBIS );
 542                 break;
 543         }
 544
 545         if( job->acodec != HB_ACODEC_AC3 )
 546         {
 547             w->fifo_in       = audio->fifo_sync;
 548             w->fifo_out      = audio->fifo_out;
 549             w->config        = &audio->config;
 550             w->amixdown      = audio->amixdown;
 551             w->source_acodec = audio->codec;
 552
 553             /* FIXME: This feels really hackish, anything better? */
 554             audio_w = calloc( sizeof( hb_work_object_t ), 1 );
 555             audio_w = memcpy( audio_w, w, sizeof( hb_work_object_t ));
 556
 557             hb_list_add( job->list_work, audio_w );
 558         }
 559
 560
 561     }
 562
 563     /* Init read & write threads */
 564     job->reader = hb_reader_init( job );
 565
 566     hb_log( " + output: %s", job->file );
 567     job->muxer = hb_muxer_init( job );
 568
 569     job->done = 0;
 570
 571     /* Launch processing threads */
 572     for( i = 1; i < hb_list_count( job->list_work ); i++ )
 573     {
 574         w = hb_list_item( job->list_work, i );
 575         w->done = &job->done;
 576         w->thread_sleep_interval = 10;
 577         w->init( w, job );
 578         w->thread = hb_thread_init( w->name, work_loop, w,
 579                                     HB_LOW_PRIORITY );
 580     }
 581
 582     done = 0;
 583     w = hb_list_item( job->list_work, 0 );
 584     w->thread_sleep_interval = 50;
 585     w->init( w, job );
 586     while( !*job->die )
 587     {
 588         if( w->work( w, NULL, NULL ) == HB_WORK_DONE )
 589         {
 590             done = 1;
 591         }
 592         if( done &&
 593             !hb_fifo_size( job->fifo_sync ) &&
 594             !hb_fifo_size( job->fifo_render ) &&
 595             !hb_fifo_size( job->fifo_mpeg4 ) )
 596         {
 597             break;
 598         }
 599         hb_snooze( w->thread_sleep_interval );
 600     }
 601     hb_list_rem( job->list_work, w );
 602     w->close( w );
 603     job->done = 1;
 604
 605     /* Close work objects */
 606     while( ( w = hb_list_item( job->list_work, 0 ) ) )
 607     {
 608         hb_list_rem( job->list_work, w );
 609         hb_thread_close( &w->thread );
 610         w->close( w );
 611
 612         /* FIXME: This feels really hackish, anything better? */
 613         if ( w->id == WORK_DECA52 ||
 614              w->id == WORK_DECDCA ||
 615              w->id == WORK_DECLPCM ||
 616              w->id == WORK_ENCFAAC ||
 617              w->id == WORK_ENCLAME ||
 618              w->id == WORK_ENCVORBIS )
 619         {
 620             free( w );
 621             w = NULL;
 622         }
 623     }
 624
 625     hb_list_close( &job->list_work );
 626
 627     /* Stop read & write threads */
 628     hb_thread_close( &job->reader );
 629     hb_thread_close( &job->muxer );
 630
 631     /* Close fifos */
 632     hb_fifo_close( &job->fifo_mpeg2 );
 633     hb_fifo_close( &job->fifo_raw );
 634     hb_fifo_close( &job->fifo_sync );
 635     hb_fifo_close( &job->fifo_render );
 636     hb_fifo_close( &job->fifo_mpeg4 );
 637
 638     for (i=0; i < hb_list_count(title->list_subtitle); i++) {
 639         subtitle =  hb_list_item( title->list_subtitle, i);
 640         if( subtitle )
 641         {
 642             hb_fifo_close( &subtitle->fifo_in );
 643             hb_fifo_close( &subtitle->fifo_raw );
 644         }
 645     }
 646     for( i = 0; i < hb_list_count( title->list_audio ); i++ )
 647     {
 648         audio = hb_list_item( title->list_audio, i );
 649         hb_fifo_close( &audio->fifo_in );
 650         hb_fifo_close( &audio->fifo_raw );
 651         hb_fifo_close( &audio->fifo_sync );
 652         hb_fifo_close( &audio->fifo_out );
 653     }
 654
 655     if( job->indepth_scan )
 656     {
 657         /*
 658          * Before closing the title print out our subtitle stats if we need to
 659          * Find the highest and lowest.
 660          */
 661         for( i=0; i < hb_list_count( title->list_subtitle ); i++ )
 662         {
 663             subtitle =  hb_list_item( title->list_subtitle, i );
 664             hb_log( "Subtitle stream 0x%x '%s': %d hits (%d forced)",
 665                     subtitle->id, subtitle->lang, subtitle->hits,
 666                     subtitle->forced_hits );
 667             if( subtitle->hits > subtitle_highest )
 668             {
 669                 subtitle_highest = subtitle->hits;
 670                 subtitle_highest_id = subtitle->id;
 671             }
 672
 673             if( subtitle->hits < subtitle_lowest )
 674             {
 675                 subtitle_lowest = subtitle->hits;
 676                 subtitle_lowest_id = subtitle->id;
 677             }
 678
 679             if( subtitle->forced_hits > 0 )
 680             {
 681                 if( subtitle_forced_id == 0 )
 682                 {
 683                     subtitle_forced_id = subtitle->id;
 684                 }
 685             }
 686         }
 687
 688         if( job->native_language ) {
 689             /*
 690              * We still have a native_language, so the audio and subtitles are
 691              * different, so in this case it is a foreign film and we want to
 692              * select the subtitle with the highest hits in our language.
 693              */
 694             subtitle_hit = subtitle_highest_id;
 695             hb_log( "Found a native-language subtitle id 0x%x", subtitle_hit);
 696         } else {
 697             if( subtitle_forced_id )
 698             {
 699                 /*
 700                  * If there are any subtitle streams with forced subtitles
 701                  * then select it in preference to the lowest.
 702                  */
 703                 subtitle_hit = subtitle_forced_id;
 704                 hb_log("Found a subtitle candidate id 0x%x (contains forced subs)",
 705                        subtitle_hit);
 706             } else if( subtitle_lowest < subtitle_highest )
 707             {
 708                 /*
 709                  * OK we have more than one, and the lowest is lower,
 710                  * but how much lower to qualify for turning it on by
 711                  * default?
 712                  *
 713                  * Let's say 10% as a default.
 714                  */
 715                 if( subtitle_lowest < ( subtitle_highest * 0.1 ) )
 716                 {
 717                     subtitle_hit = subtitle_lowest_id;
 718                     hb_log( "Found a subtitle candidate id 0x%x",
 719                             subtitle_hit );
 720                 } else {
 721                     hb_log( "No candidate subtitle detected during subtitle-scan");
 722                 }
 723             }
 724         }
 725     }
 726
 727     if( job->select_subtitle )
 728     {
 729         if( job->indepth_scan )
 730         {
 731             for( i=0; i < hb_list_count( title->list_subtitle ); i++ )
 732             {
 733                 subtitle =  hb_list_item( title->list_subtitle, i );
 734                 if( subtitle->id == subtitle_hit )
 735                 {
 736                     hb_list_rem( title->list_subtitle, subtitle );
 737                     *( job->select_subtitle ) = subtitle;
 738                 }
 739             }
 740         } else {
 741             /*
 742              * Must be the end of pass 0 or 2 - we don't need this anymore.
 743              *
 744              * Have to put the subtitle list back together in the title though
 745              * or the GUI will have a hissy fit.
 746              */
 747             free( job->select_subtitle );
 748             job->select_subtitle = NULL;
 749         }
 750     }
 751
 752     if( job->filters )
 753     {
 754         for( i = 0; i < hb_list_count( job->filters ); i++ )
 755         {
 756             hb_filter_object_t * filter = hb_list_item( job->filters, i );
 757             hb_filter_close( &filter );
 758         }
 759         hb_list_close( &job->filters );
 760     }
 761
 762     hb_buffer_pool_free();
 763
 764     hb_title_close( &job->title );
 765     free( job );
 766 }
 767
 768 /**
 769  * Performs the work objects specific work function.
 770  * Loops calling work function for associated work object. Sleeps when fifo is full.
 771  * Monitors work done indicator.
 772  * Exits loop when work indiactor is set.
 773  * @param _w Handle to work object.
 774  */
 775 static void work_loop( void * _w )
 776 {
 777     hb_work_object_t * w = _w;
 778     hb_buffer_t      * buf_in, * buf_out;
 779
 780     while( !*w->done )
 781     {
 782 #if 0
 783         hb_lock( job->pause );
 784         hb_unlock( job->pause );
 785 #endif
 786         if( hb_fifo_is_full( w->fifo_out ) ||
 787 //        if( (hb_fifo_percent_full( w->fifo_out ) > 0.8) ||
 788             !( buf_in = hb_fifo_get( w->fifo_in ) ) )
 789         {
 790             hb_snooze( w->thread_sleep_interval );
 791 //                      w->thread_sleep_interval += 1;
 792             continue;
 793         }
 794 //              w->thread_sleep_interval = MAX(1, (w->thread_sleep_interval - 1));
 795
 796         w->work( w, &buf_in, &buf_out );
 797
 798         // Propagate any chapter breaks for the worker if and only if the
 799         // output frame has the same time stamp as the input frame (any
 800         // worker that delays frames has to propagate the chapter marks itself
 801         // and workers that move chapter marks to a different time should set
 802         // 'buf_in' to NULL so that this code won't generate spurious duplicates.)
 803         if( buf_in && buf_out && buf_in->new_chap && buf_in->start == buf_out->start)
 804         {
 805             hb_log("work %s: Copying Chapter Break @ %lld", w->name, buf_in->start);
 806             buf_out->new_chap = 1;
 807         }
 808
 809         if( buf_in )
 810         {
 811             hb_buffer_close( &buf_in );
 812         }
 813         if( buf_out )
 814         {
 815             hb_fifo_push( w->fifo_out, buf_out );
 816         }
 817     }
 818 }