git.sesse.net Git - mlt/blob - src/modules/avformat/consumer_avformat.c

   1 /*
   2  * consumer_avformat.c -- an encoder based on avformat
   3  * Copyright (C) 2003-2004 Ushodaya Enterprises Limited
   4  * Author: Charles Yates <charles.yates@pandora.be>
   5  * Much code borrowed from ffmpeg.c: Copyright (c) 2000-2003 Fabrice Bellard
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21
  22 // mlt Header files
  23 #include <framework/mlt_consumer.h>
  24 #include <framework/mlt_frame.h>
  25 #include <framework/mlt_profile.h>
  26 #include <framework/mlt_log.h>
  27 #include <framework/mlt_events.h>
  28
  29 // System header files
  30 #include <stdio.h>
  31 #include <stdlib.h>
  32 #include <string.h>
  33 #include <limits.h>
  34 #include <pthread.h>
  35 #include <sys/time.h>
  36 #include <unistd.h>
  37
  38 // avformat header files
  39 #include <libavformat/avformat.h>
  40 #ifdef SWSCALE
  41 #include <libswscale/swscale.h>
  42 #endif
  43 #include <libavcodec/opt.h>
  44 #if LIBAVUTIL_VERSION_INT >= ((50<<16)+(8<<8)+0)
  45 #include <libavutil/pixdesc.h>
  46 #endif
  47
  48 #if LIBAVUTIL_VERSION_INT < (50<<16)
  49 #define PIX_FMT_RGB32 PIX_FMT_RGBA32
  50 #define PIX_FMT_YUYV422 PIX_FMT_YUV422
  51 #endif
  52
  53 #define MAX_AUDIO_STREAMS (8)
  54 #define AUDIO_ENCODE_BUFFER_SIZE (48000 * 2 * MAX_AUDIO_STREAMS)
  55 #define AUDIO_BUFFER_SIZE (1024 * 42)
  56 #define VIDEO_BUFFER_SIZE (2048 * 1024)
  57
  58 void avformat_lock( );
  59 void avformat_unlock( );
  60
  61 //
  62 // This structure should be extended and made globally available in mlt
  63 //
  64
  65 typedef struct
  66 {
  67         int16_t *buffer;
  68         int size;
  69         int used;
  70         double time;
  71         int frequency;
  72         int channels;
  73 }
  74 *sample_fifo, sample_fifo_s;
  75
  76 sample_fifo sample_fifo_init( int frequency, int channels )
  77 {
  78         sample_fifo fifo = calloc( 1, sizeof( sample_fifo_s ) );
  79         fifo->frequency = frequency;
  80         fifo->channels = channels;
  81         return fifo;
  82 }
  83
  84 // sample_fifo_clear and check are temporarily aborted (not working as intended)
  85
  86 void sample_fifo_clear( sample_fifo fifo, double time )
  87 {
  88         int words = ( float )( time - fifo->time ) * fifo->frequency * fifo->channels;
  89         if ( ( int )( ( float )time * 100 ) < ( int )( ( float )fifo->time * 100 ) && fifo->used > words && words > 0 )
  90         {
  91                 memmove( fifo->buffer, &fifo->buffer[ words ], ( fifo->used - words ) * sizeof( int16_t ) );
  92                 fifo->used -= words;
  93                 fifo->time = time;
  94         }
  95         else if ( ( int )( ( float )time * 100 ) != ( int )( ( float )fifo->time * 100 ) )
  96         {
  97                 fifo->used = 0;
  98                 fifo->time = time;
  99         }
 100 }
 101
 102 void sample_fifo_check( sample_fifo fifo, double time )
 103 {
 104         if ( fifo->used == 0 )
 105         {
 106                 if ( ( int )( ( float )time * 100 ) < ( int )( ( float )fifo->time * 100 ) )
 107                         fifo->time = time;
 108         }
 109 }
 110
 111 void sample_fifo_append( sample_fifo fifo, int16_t *samples, int count )
 112 {
 113         if ( ( fifo->size - fifo->used ) < count )
 114         {
 115                 fifo->size += count * 5;
 116                 fifo->buffer = realloc( fifo->buffer, fifo->size * sizeof( int16_t ) );
 117         }
 118
 119         memcpy( &fifo->buffer[ fifo->used ], samples, count * sizeof( int16_t ) );
 120         fifo->used += count;
 121 }
 122
 123 int sample_fifo_used( sample_fifo fifo )
 124 {
 125         return fifo->used;
 126 }
 127
 128 int sample_fifo_fetch( sample_fifo fifo, int16_t *samples, int count )
 129 {
 130         if ( count > fifo->used )
 131                 count = fifo->used;
 132
 133         memcpy( samples, fifo->buffer, count * sizeof( int16_t ) );
 134         fifo->used -= count;
 135         memmove( fifo->buffer, &fifo->buffer[ count ], fifo->used * sizeof( int16_t ) );
 136
 137         fifo->time += ( double )count / fifo->channels / fifo->frequency;
 138
 139         return count;
 140 }
 141
 142 void sample_fifo_close( sample_fifo fifo )
 143 {
 144         free( fifo->buffer );
 145         free( fifo );
 146 }
 147
 148 // Forward references.
 149 static int consumer_start( mlt_consumer consumer );
 150 static int consumer_stop( mlt_consumer consumer );
 151 static int consumer_is_stopped( mlt_consumer consumer );
 152 static void *consumer_thread( void *arg );
 153 static void consumer_close( mlt_consumer consumer );
 154
 155 /** Initialise the consumer.
 156 */
 157
 158 mlt_consumer consumer_avformat_init( mlt_profile profile, char *arg )
 159 {
 160         // Allocate the consumer
 161         mlt_consumer consumer = mlt_consumer_new( profile );
 162
 163         // If memory allocated and initialises without error
 164         if ( consumer != NULL )
 165         {
 166                 // Get properties from the consumer
 167                 mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 168
 169                 // Assign close callback
 170                 consumer->close = consumer_close;
 171
 172                 // Interpret the argument
 173                 if ( arg != NULL )
 174                         mlt_properties_set( properties, "target", arg );
 175
 176                 // sample and frame queue
 177                 mlt_properties_set_data( properties, "frame_queue", mlt_deque_init( ), 0, ( mlt_destructor )mlt_deque_close, NULL );
 178
 179                 // Audio options not fully handled by AVOptions
 180 #define QSCALE_NONE (-99999)
 181                 mlt_properties_set_int( properties, "aq", QSCALE_NONE );
 182
 183                 // Video options not fully handled by AVOptions
 184                 mlt_properties_set_int( properties, "dc", 8 );
 185
 186                 // Muxer options not fully handled by AVOptions
 187                 mlt_properties_set_double( properties, "muxdelay", 0.7 );
 188                 mlt_properties_set_double( properties, "muxpreload", 0.5 );
 189
 190                 // Ensure termination at end of the stream
 191                 mlt_properties_set_int( properties, "terminate_on_pause", 1 );
 192
 193                 // Default to separate processing threads for producer and consumer with no frame dropping!
 194                 mlt_properties_set_int( properties, "real_time", -1 );
 195                 mlt_properties_set_int( properties, "prefill", 1 );
 196
 197                 // Set up start/stop/terminated callbacks
 198                 consumer->start = consumer_start;
 199                 consumer->stop = consumer_stop;
 200                 consumer->is_stopped = consumer_is_stopped;
 201
 202                 mlt_events_register( properties, "consumer-fatal-error", NULL );
 203         }
 204
 205         // Return consumer
 206         return consumer;
 207 }
 208
 209 /** Start the consumer.
 210 */
 211
 212 static int consumer_start( mlt_consumer consumer )
 213 {
 214         // Get the properties
 215         mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 216         int error = 0;
 217
 218         // Report information about available muxers and codecs as YAML Tiny
 219         char *s = mlt_properties_get( properties, "f" );
 220         if ( s && strcmp( s, "list" ) == 0 )
 221         {
 222                 mlt_properties doc = mlt_properties_new();
 223                 mlt_properties formats = mlt_properties_new();
 224                 char key[20];
 225                 AVOutputFormat *format = NULL;
 226
 227                 mlt_properties_set_data( properties, "f", formats, 0, (mlt_destructor) mlt_properties_close, NULL );
 228                 mlt_properties_set_data( doc, "formats", formats, 0, NULL, NULL );
 229                 while ( ( format = av_oformat_next( format ) ) )
 230                 {
 231                         snprintf( key, sizeof(key), "%d", mlt_properties_count( formats ) );
 232                         mlt_properties_set( formats, key, format->name );
 233                 }
 234                 fprintf( stderr, "%s", mlt_properties_serialise_yaml( doc ) );
 235                 mlt_properties_close( doc );
 236                 error = 1;
 237         }
 238         s = mlt_properties_get( properties, "acodec" );
 239         if ( s && strcmp( s, "list" ) == 0 )
 240         {
 241                 mlt_properties doc = mlt_properties_new();
 242                 mlt_properties codecs = mlt_properties_new();
 243                 char key[20];
 244                 AVCodec *codec = NULL;
 245
 246                 mlt_properties_set_data( properties, "acodec", codecs, 0, (mlt_destructor) mlt_properties_close, NULL );
 247                 mlt_properties_set_data( doc, "audio_codecs", codecs, 0, NULL, NULL );
 248                 while ( ( codec = av_codec_next( codec ) ) )
 249                         if ( codec->encode && codec->type == CODEC_TYPE_AUDIO )
 250                         {
 251                                 snprintf( key, sizeof(key), "%d", mlt_properties_count( codecs ) );
 252                                 mlt_properties_set( codecs, key, codec->name );
 253                         }
 254                 fprintf( stderr, "%s", mlt_properties_serialise_yaml( doc ) );
 255                 mlt_properties_close( doc );
 256                 error = 1;
 257         }
 258         s = mlt_properties_get( properties, "vcodec" );
 259         if ( s && strcmp( s, "list" ) == 0 )
 260         {
 261                 mlt_properties doc = mlt_properties_new();
 262                 mlt_properties codecs = mlt_properties_new();
 263                 char key[20];
 264                 AVCodec *codec = NULL;
 265
 266                 mlt_properties_set_data( properties, "vcodec", codecs, 0, (mlt_destructor) mlt_properties_close, NULL );
 267                 mlt_properties_set_data( doc, "video_codecs", codecs, 0, NULL, NULL );
 268                 while ( ( codec = av_codec_next( codec ) ) )
 269                         if ( codec->encode && codec->type == CODEC_TYPE_VIDEO )
 270                         {
 271                                 snprintf( key, sizeof(key), "%d", mlt_properties_count( codecs ) );
 272                                 mlt_properties_set( codecs, key, codec->name );
 273                         }
 274                 fprintf( stderr, "%s", mlt_properties_serialise_yaml( doc ) );
 275                 mlt_properties_close( doc );
 276                 error = 1;
 277         }
 278
 279         // Check that we're not already running
 280         if ( !error && !mlt_properties_get_int( properties, "running" ) )
 281         {
 282                 // Allocate a thread
 283                 pthread_t *thread = calloc( 1, sizeof( pthread_t ) );
 284
 285                 // Get the width and height
 286                 int width = mlt_properties_get_int( properties, "width" );
 287                 int height = mlt_properties_get_int( properties, "height" );
 288
 289                 // Obtain the size property
 290                 char *size = mlt_properties_get( properties, "s" );
 291
 292                 // Interpret it
 293                 if ( size != NULL )
 294                 {
 295                         int tw, th;
 296                         if ( sscanf( size, "%dx%d", &tw, &th ) == 2 && tw > 0 && th > 0 )
 297                         {
 298                                 width = tw;
 299                                 height = th;
 300                         }
 301                         else
 302                         {
 303                                 mlt_log_warning( MLT_CONSUMER_SERVICE( consumer ), "Invalid size property %s - ignoring.\n", size );
 304                         }
 305                 }
 306
 307                 // Now ensure we honour the multiple of two requested by libavformat
 308                 width = ( width / 2 ) * 2;
 309                 height = ( height / 2 ) * 2;
 310                 mlt_properties_set_int( properties, "width", width );
 311                 mlt_properties_set_int( properties, "height", height );
 312
 313                 // We need to set these on the profile as well because the s property is
 314                 // an alias to mlt properties that correspond to profile settings.
 315                 mlt_profile profile = mlt_service_profile( MLT_CONSUMER_SERVICE( consumer ) );
 316                 if ( profile )
 317                 {
 318                         profile->width = width;
 319                         profile->height = height;
 320                 }
 321
 322                 // Handle the ffmpeg command line "-r" property for frame rate
 323                 if ( mlt_properties_get( properties, "r" ) )
 324                 {
 325                         double frame_rate = mlt_properties_get_double( properties, "r" );
 326                         AVRational rational = av_d2q( frame_rate, 255 );
 327                         mlt_properties_set_int( properties, "frame_rate_num", rational.num );
 328                         mlt_properties_set_int( properties, "frame_rate_den", rational.den );
 329                         if ( profile )
 330                         {
 331                                 profile->frame_rate_num = rational.num;
 332                                 profile->frame_rate_den = rational.den;
 333                                 mlt_properties_set_double( properties, "fps", mlt_profile_fps( profile ) );
 334                         }
 335                 }
 336
 337                 // Apply AVOptions that are synonyms for standard mlt_consumer options
 338                 if ( mlt_properties_get( properties, "ac" ) )
 339                         mlt_properties_set_int( properties, "channels", mlt_properties_get_int( properties, "ac" ) );
 340                 if ( mlt_properties_get( properties, "ar" ) )
 341                         mlt_properties_set_int( properties, "frequency", mlt_properties_get_int( properties, "ar" ) );
 342
 343                 // Assign the thread to properties
 344                 mlt_properties_set_data( properties, "thread", thread, sizeof( pthread_t ), free, NULL );
 345
 346                 // Set the running state
 347                 mlt_properties_set_int( properties, "running", 1 );
 348
 349                 // Create the thread
 350                 pthread_create( thread, NULL, consumer_thread, consumer );
 351         }
 352         return error;
 353 }
 354
 355 /** Stop the consumer.
 356 */
 357
 358 static int consumer_stop( mlt_consumer consumer )
 359 {
 360         // Get the properties
 361         mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 362
 363         // Check that we're running
 364         if ( mlt_properties_get_int( properties, "running" ) )
 365         {
 366                 // Get the thread
 367                 pthread_t *thread = mlt_properties_get_data( properties, "thread", NULL );
 368
 369                 // Stop the thread
 370                 mlt_properties_set_int( properties, "running", 0 );
 371
 372                 // Wait for termination
 373                 pthread_join( *thread, NULL );
 374         }
 375
 376         return 0;
 377 }
 378
 379 /** Determine if the consumer is stopped.
 380 */
 381
 382 static int consumer_is_stopped( mlt_consumer consumer )
 383 {
 384         // Get the properties
 385         mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 386         return !mlt_properties_get_int( properties, "running" );
 387 }
 388
 389 /** Process properties as AVOptions and apply to AV context obj
 390 */
 391
 392 static void apply_properties( void *obj, mlt_properties properties, int flags, int alloc )
 393 {
 394         int i;
 395         int count = mlt_properties_count( properties );
 396         for ( i = 0; i < count; i++ )
 397         {
 398                 const char *opt_name = mlt_properties_get_name( properties, i );
 399                 const AVOption *opt = av_find_opt( obj, opt_name, NULL, flags, flags );
 400                 if ( opt != NULL )
 401 #if LIBAVCODEC_VERSION_INT >= ((52<<16)+(7<<8)+0)
 402                         av_set_string3( obj, opt_name, mlt_properties_get( properties, opt_name), alloc, NULL );
 403 #elif LIBAVCODEC_VERSION_INT >= ((51<<16)+(59<<8)+0)
 404                         av_set_string2( obj, opt_name, mlt_properties_get( properties, opt_name), alloc );
 405 #else
 406                         av_set_string( obj, opt_name, mlt_properties_get( properties, opt_name) );
 407 #endif
 408         }
 409 }
 410
 411 /** Add an audio output stream
 412 */
 413
 414 static AVStream *add_audio_stream( mlt_consumer consumer, AVFormatContext *oc, int codec_id, int channels )
 415 {
 416         // Get the properties
 417         mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 418
 419         // Create a new stream
 420         AVStream *st = av_new_stream( oc, oc->nb_streams );
 421
 422         // If created, then initialise from properties
 423         if ( st != NULL )
 424         {
 425                 AVCodecContext *c = st->codec;
 426
 427                 // Establish defaults from AVOptions
 428                 avcodec_get_context_defaults2( c, CODEC_TYPE_AUDIO );
 429
 430                 c->codec_id = codec_id;
 431                 c->codec_type = CODEC_TYPE_AUDIO;
 432                 c->sample_fmt = SAMPLE_FMT_S16;
 433
 434 #if 0 // disabled until some audio codecs are multi-threaded
 435                 // Setup multi-threading
 436                 int thread_count = mlt_properties_get_int( properties, "threads" );
 437                 if ( thread_count == 0 && getenv( "MLT_AVFORMAT_THREADS" ) )
 438                         thread_count = atoi( getenv( "MLT_AVFORMAT_THREADS" ) );
 439                 if ( thread_count > 1 )
 440                         avcodec_thread_init( c, thread_count );
 441 #endif
 442
 443                 if (oc->oformat->flags & AVFMT_GLOBALHEADER)
 444                         c->flags |= CODEC_FLAG_GLOBAL_HEADER;
 445
 446                 // Allow the user to override the audio fourcc
 447                 if ( mlt_properties_get( properties, "atag" ) )
 448                 {
 449                         char *tail = NULL;
 450                         char *arg = mlt_properties_get( properties, "atag" );
 451                         int tag = strtol( arg, &tail, 0);
 452                         if( !tail || *tail )
 453                                 tag = arg[ 0 ] + ( arg[ 1 ] << 8 ) + ( arg[ 2 ] << 16 ) + ( arg[ 3 ] << 24 );
 454                         c->codec_tag = tag;
 455                 }
 456
 457                 // Process properties as AVOptions
 458                 char *apre = mlt_properties_get( properties, "apre" );
 459                 if ( apre )
 460                 {
 461                         mlt_properties p = mlt_properties_load( apre );
 462                         apply_properties( c, p, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, 1 );
 463                         mlt_properties_close( p );
 464                 }
 465                 apply_properties( c, properties, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, 0 );
 466
 467                 int audio_qscale = mlt_properties_get_int( properties, "aq" );
 468         if ( audio_qscale > QSCALE_NONE )
 469                 {
 470                         c->flags |= CODEC_FLAG_QSCALE;
 471                         c->global_quality = st->quality = FF_QP2LAMBDA * audio_qscale;
 472                 }
 473
 474                 // Set parameters controlled by MLT
 475                 c->sample_rate = mlt_properties_get_int( properties, "frequency" );
 476                 c->time_base = ( AVRational ){ 1, c->sample_rate };
 477                 c->channels = channels;
 478
 479                 if ( mlt_properties_get( properties, "alang" ) != NULL )
 480                         strncpy( st->language, mlt_properties_get( properties, "alang" ), sizeof( st->language ) );
 481         }
 482         else
 483         {
 484                 mlt_log_error( MLT_CONSUMER_SERVICE( consumer ), "Could not allocate a stream for audio\n" );
 485         }
 486
 487         return st;
 488 }
 489
 490 static int open_audio( AVFormatContext *oc, AVStream *st, int audio_outbuf_size, const char *codec_name )
 491 {
 492         // We will return the audio input size from here
 493         int audio_input_frame_size = 0;
 494
 495         // Get the context
 496         AVCodecContext *c = st->codec;
 497
 498         // Find the encoder
 499         AVCodec *codec;
 500         if ( codec_name )
 501                 codec = avcodec_find_encoder_by_name( codec_name );
 502         else
 503                 codec = avcodec_find_encoder( c->codec_id );
 504
 505         avformat_lock();
 506
 507         // Continue if codec found and we can open it
 508         if ( codec != NULL && avcodec_open( c, codec ) >= 0 )
 509         {
 510                 // ugly hack for PCM codecs (will be removed ASAP with new PCM
 511                 // support to compute the input frame size in samples
 512                 if ( c->frame_size <= 1 )
 513                 {
 514                         audio_input_frame_size = audio_outbuf_size / c->channels;
 515                         switch(st->codec->codec_id)
 516                         {
 517                                 case CODEC_ID_PCM_S16LE:
 518                                 case CODEC_ID_PCM_S16BE:
 519                                 case CODEC_ID_PCM_U16LE:
 520                                 case CODEC_ID_PCM_U16BE:
 521                                         audio_input_frame_size >>= 1;
 522                                         break;
 523                                 default:
 524                                         break;
 525                         }
 526                 }
 527                 else
 528                 {
 529                         audio_input_frame_size = c->frame_size;
 530                 }
 531
 532                 // Some formats want stream headers to be seperate (hmm)
 533                 if ( !strcmp( oc->oformat->name, "mp4" ) ||
 534                          !strcmp( oc->oformat->name, "mov" ) ||
 535                          !strcmp( oc->oformat->name, "3gp" ) )
 536                         c->flags |= CODEC_FLAG_GLOBAL_HEADER;
 537         }
 538         else
 539         {
 540                 mlt_log_warning( NULL, "%s: Unable to encode audio - disabling audio output.\n", __FILE__ );
 541         }
 542
 543         avformat_unlock();
 544
 545         return audio_input_frame_size;
 546 }
 547
 548 static void close_audio( AVFormatContext *oc, AVStream *st )
 549 {
 550         if ( st && st->codec )
 551         {
 552                 avformat_lock();
 553                 avcodec_close( st->codec );
 554                 avformat_unlock();
 555         }
 556 }
 557
 558 /** Add a video output stream
 559 */
 560
 561 static AVStream *add_video_stream( mlt_consumer consumer, AVFormatContext *oc, int codec_id )
 562 {
 563         // Get the properties
 564         mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 565
 566         // Create a new stream
 567         AVStream *st = av_new_stream( oc, oc->nb_streams );
 568
 569         if ( st != NULL )
 570         {
 571                 char *pix_fmt = mlt_properties_get( properties, "pix_fmt" );
 572                 AVCodecContext *c = st->codec;
 573
 574                 // Establish defaults from AVOptions
 575                 avcodec_get_context_defaults2( c, CODEC_TYPE_VIDEO );
 576
 577                 c->codec_id = codec_id;
 578                 c->codec_type = CODEC_TYPE_VIDEO;
 579
 580                 // Setup multi-threading
 581                 int thread_count = mlt_properties_get_int( properties, "threads" );
 582                 if ( thread_count == 0 && getenv( "MLT_AVFORMAT_THREADS" ) )
 583                         thread_count = atoi( getenv( "MLT_AVFORMAT_THREADS" ) );
 584                 if ( thread_count > 1 )
 585                         avcodec_thread_init( c, thread_count );
 586
 587                 // Process properties as AVOptions
 588                 char *vpre = mlt_properties_get( properties, "vpre" );
 589                 if ( vpre )
 590                 {
 591                         mlt_properties p = mlt_properties_load( vpre );
 592 #ifdef AVDATADIR
 593                         if ( mlt_properties_count( p ) < 1 )
 594                         {
 595                                 AVCodec *codec = avcodec_find_encoder( c->codec_id );
 596                                 if ( codec )
 597                                 {
 598                                         char *path = malloc( strlen(AVDATADIR) + strlen(codec->name) + strlen(vpre) + strlen(".ffpreset") + 2 );
 599                                         strcpy( path, AVDATADIR );
 600                                         strcat( path, codec->name );
 601                                         strcat( path, "-" );
 602                                         strcat( path, vpre );
 603                                         strcat( path, ".ffpreset" );
 604
 605                                         mlt_properties_close( p );
 606                                         p = mlt_properties_load( path );
 607                                         mlt_properties_debug( p, path, stderr );
 608                                         free( path );
 609                                 }
 610                         }
 611                         else
 612                         {
 613                                 mlt_properties_debug( p, vpre, stderr );
 614                         }
 615 #endif
 616                         apply_properties( c, p, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, 1 );
 617                         mlt_properties_close( p );
 618                 }
 619                 int colorspace = mlt_properties_get_int( properties, "colorspace" );
 620                 mlt_properties_set( properties, "colorspace", NULL );
 621                 apply_properties( c, properties, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, 0 );
 622                 mlt_properties_set_int( properties, "colorspace", colorspace );
 623
 624                 // Set options controlled by MLT
 625                 c->width = mlt_properties_get_int( properties, "width" );
 626                 c->height = mlt_properties_get_int( properties, "height" );
 627                 c->time_base.num = mlt_properties_get_int( properties, "frame_rate_den" );
 628                 c->time_base.den = mlt_properties_get_int( properties, "frame_rate_num" );
 629                 if ( st->time_base.den == 0 )
 630                         st->time_base = c->time_base;
 631 #if LIBAVUTIL_VERSION_INT >= ((50<<16)+(8<<8)+0)
 632                 c->pix_fmt = pix_fmt ? av_get_pix_fmt( pix_fmt ) : PIX_FMT_YUV420P;
 633 #else
 634                 c->pix_fmt = pix_fmt ? avcodec_get_pix_fmt( pix_fmt ) : PIX_FMT_YUV420P;
 635 #endif
 636
 637 #if LIBAVCODEC_VERSION_INT > ((52<<16)+(28<<8)+0)
 638                 switch ( colorspace )
 639                 {
 640                 case 170:
 641                         c->colorspace = AVCOL_SPC_SMPTE170M;
 642                         break;
 643                 case 240:
 644                         c->colorspace = AVCOL_SPC_SMPTE240M;
 645                         break;
 646                 case 470:
 647                         c->colorspace = AVCOL_SPC_BT470BG;
 648                         break;
 649                 case 601:
 650                         c->colorspace = ( 576 % c->height ) ? AVCOL_SPC_SMPTE170M : AVCOL_SPC_BT470BG;
 651                         break;
 652                 case 709:
 653                         c->colorspace = AVCOL_SPC_BT709;
 654                         break;
 655                 }
 656 #endif
 657
 658                 if ( mlt_properties_get( properties, "aspect" ) )
 659                 {
 660                         // "-aspect" on ffmpeg command line is display aspect ratio
 661                         double ar = mlt_properties_get_double( properties, "aspect" );
 662                         AVRational rational = av_d2q( ar, 255 );
 663
 664                         // Update the profile and properties as well since this is an alias
 665                         // for mlt properties that correspond to profile settings
 666                         mlt_properties_set_int( properties, "display_aspect_num", rational.num );
 667                         mlt_properties_set_int( properties, "display_aspect_den", rational.den );
 668                         mlt_profile profile = mlt_service_profile( MLT_CONSUMER_SERVICE( consumer ) );
 669                         if ( profile )
 670                         {
 671                                 profile->display_aspect_num = rational.num;
 672                                 profile->display_aspect_den = rational.den;
 673                                 mlt_properties_set_double( properties, "display_ratio", mlt_profile_dar( profile ) );
 674                         }
 675
 676                         // Now compute the sample aspect ratio
 677                         rational = av_d2q( ar * c->height / c->width, 255 );
 678                         c->sample_aspect_ratio = rational;
 679                         // Update the profile and properties as well since this is an alias
 680                         // for mlt properties that correspond to profile settings
 681                         mlt_properties_set_int( properties, "sample_aspect_num", rational.num );
 682                         mlt_properties_set_int( properties, "sample_aspect_den", rational.den );
 683                         if ( profile )
 684                         {
 685                                 profile->sample_aspect_num = rational.num;
 686                                 profile->sample_aspect_den = rational.den;
 687                                 mlt_properties_set_double( properties, "aspect_ratio", mlt_profile_sar( profile ) );
 688                         }
 689                 }
 690                 else
 691                 {
 692                         c->sample_aspect_ratio.num = mlt_properties_get_int( properties, "sample_aspect_num" );
 693                         c->sample_aspect_ratio.den = mlt_properties_get_int( properties, "sample_aspect_den" );
 694                 }
 695 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(21<<8)+0)
 696                 st->sample_aspect_ratio = c->sample_aspect_ratio;
 697 #endif
 698
 699                 if ( mlt_properties_get_double( properties, "qscale" ) > 0 )
 700                 {
 701                         c->flags |= CODEC_FLAG_QSCALE;
 702                         st->quality = FF_QP2LAMBDA * mlt_properties_get_double( properties, "qscale" );
 703                 }
 704
 705                 // Allow the user to override the video fourcc
 706                 if ( mlt_properties_get( properties, "vtag" ) )
 707                 {
 708                         char *tail = NULL;
 709                         const char *arg = mlt_properties_get( properties, "vtag" );
 710                         int tag = strtol( arg, &tail, 0);
 711                         if( !tail || *tail )
 712                                 tag = arg[ 0 ] + ( arg[ 1 ] << 8 ) + ( arg[ 2 ] << 16 ) + ( arg[ 3 ] << 24 );
 713                         c->codec_tag = tag;
 714                 }
 715
 716                 // Some formats want stream headers to be seperate
 717                 if ( oc->oformat->flags & AVFMT_GLOBALHEADER )
 718                         c->flags |= CODEC_FLAG_GLOBAL_HEADER;
 719
 720                 // Translate these standard mlt consumer properties to ffmpeg
 721                 if ( mlt_properties_get_int( properties, "progressive" ) == 0 &&
 722                      mlt_properties_get_int( properties, "deinterlace" ) == 0 )
 723                 {
 724                         if ( ! mlt_properties_get( properties, "ildct" ) || mlt_properties_get_int( properties, "ildct" ) )
 725                                 c->flags |= CODEC_FLAG_INTERLACED_DCT;
 726                         if ( ! mlt_properties_get( properties, "ilme" ) || mlt_properties_get_int( properties, "ilme" ) )
 727                                 c->flags |= CODEC_FLAG_INTERLACED_ME;
 728                 }
 729
 730                 // parse the ratecontrol override string
 731                 int i;
 732                 char *rc_override = mlt_properties_get( properties, "rc_override" );
 733                 for ( i = 0; rc_override; i++ )
 734                 {
 735                         int start, end, q;
 736                         int e = sscanf( rc_override, "%d,%d,%d", &start, &end, &q );
 737                         if ( e != 3 )
 738                                 mlt_log_warning( MLT_CONSUMER_SERVICE( consumer ), "Error parsing rc_override\n" );
 739                         c->rc_override = av_realloc( c->rc_override, sizeof( RcOverride ) * ( i + 1 ) );
 740                         c->rc_override[i].start_frame = start;
 741                         c->rc_override[i].end_frame = end;
 742                         if ( q > 0 )
 743                         {
 744                                 c->rc_override[i].qscale = q;
 745                                 c->rc_override[i].quality_factor = 1.0;
 746                         }
 747                         else
 748                         {
 749                                 c->rc_override[i].qscale = 0;
 750                                 c->rc_override[i].quality_factor = -q / 100.0;
 751                         }
 752                         rc_override = strchr( rc_override, '/' );
 753                         if ( rc_override )
 754                                 rc_override++;
 755                 }
 756                 c->rc_override_count = i;
 757                 if ( !c->rc_initial_buffer_occupancy )
 758                         c->rc_initial_buffer_occupancy = c->rc_buffer_size * 3/4;
 759                 c->intra_dc_precision = mlt_properties_get_int( properties, "dc" ) - 8;
 760
 761                 // Setup dual-pass
 762                 i = mlt_properties_get_int( properties, "pass" );
 763                 if ( i == 1 )
 764                         c->flags |= CODEC_FLAG_PASS1;
 765                 else if ( i == 2 )
 766                         c->flags |= CODEC_FLAG_PASS2;
 767                 if ( codec_id != CODEC_ID_H264 && ( c->flags & ( CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2 ) ) )
 768                 {
 769                         char logfilename[1024];
 770                         FILE *f;
 771                         int size;
 772                         char *logbuffer;
 773
 774                         snprintf( logfilename, sizeof(logfilename), "%s_2pass.log",
 775                                 mlt_properties_get( properties, "passlogfile" ) ? mlt_properties_get( properties, "passlogfile" ) : mlt_properties_get( properties, "target" ) );
 776                         if ( c->flags & CODEC_FLAG_PASS1 )
 777                         {
 778                                 f = fopen( logfilename, "w" );
 779                                 if ( !f )
 780                                         perror( logfilename );
 781                                 else
 782                                         mlt_properties_set_data( properties, "_logfile", f, 0, ( mlt_destructor )fclose, NULL );
 783                         }
 784                         else
 785                         {
 786                                 /* read the log file */
 787                                 f = fopen( logfilename, "r" );
 788                                 if ( !f )
 789                                 {
 790                                         perror(logfilename);
 791                                 }
 792                                 else
 793                                 {
 794                                         mlt_properties_set( properties, "_logfilename", logfilename );
 795                                         fseek( f, 0, SEEK_END );
 796                                         size = ftell( f );
 797                                         fseek( f, 0, SEEK_SET );
 798                                         logbuffer = av_malloc( size + 1 );
 799                                         if ( !logbuffer )
 800                                                 mlt_log_fatal( MLT_CONSUMER_SERVICE( consumer ), "Could not allocate log buffer\n" );
 801                                         else
 802                                         {
 803                                                 size = fread( logbuffer, 1, size, f );
 804                                                 fclose( f );
 805                                                 logbuffer[size] = '\0';
 806                                                 c->stats_in = logbuffer;
 807                                                 mlt_properties_set_data( properties, "_logbuffer", logbuffer, 0, ( mlt_destructor )av_free, NULL );
 808                                         }
 809                                 }
 810                         }
 811                 }
 812         }
 813         else
 814         {
 815                 mlt_log_error( MLT_CONSUMER_SERVICE( consumer ), "Could not allocate a stream for video\n" );
 816         }
 817
 818         return st;
 819 }
 820
 821 static AVFrame *alloc_picture( int pix_fmt, int width, int height )
 822 {
 823         // Allocate a frame
 824         AVFrame *picture = avcodec_alloc_frame();
 825
 826         // Determine size of the
 827         int size = avpicture_get_size(pix_fmt, width, height);
 828
 829         // Allocate the picture buf
 830         uint8_t *picture_buf = av_malloc(size);
 831
 832         // If we have both, then fill the image
 833         if ( picture != NULL && picture_buf != NULL )
 834         {
 835                 // Fill the frame with the allocated buffer
 836                 avpicture_fill( (AVPicture *)picture, picture_buf, pix_fmt, width, height);
 837         }
 838         else
 839         {
 840                 // Something failed - clean up what we can
 841                 av_free( picture );
 842                 av_free( picture_buf );
 843                 picture = NULL;
 844         }
 845
 846         return picture;
 847 }
 848
 849 static int open_video(AVFormatContext *oc, AVStream *st)
 850 {
 851         // Get the codec
 852         AVCodecContext *video_enc = st->codec;
 853
 854         // find the video encoder
 855         AVCodec *codec = avcodec_find_encoder( video_enc->codec_id );
 856
 857         if( codec && codec->pix_fmts )
 858         {
 859                 const enum PixelFormat *p = codec->pix_fmts;
 860                 for( ; *p!=-1; p++ )
 861                 {
 862                         if( *p == video_enc->pix_fmt )
 863                                 break;
 864                 }
 865                 if( *p == -1 )
 866                         video_enc->pix_fmt = codec->pix_fmts[ 0 ];
 867         }
 868
 869         // Open the codec safely
 870         avformat_lock();
 871         int result = codec != NULL && avcodec_open( video_enc, codec ) >= 0;
 872         avformat_unlock();
 873
 874         return result;
 875 }
 876
 877 void close_video(AVFormatContext *oc, AVStream *st)
 878 {
 879         if ( st && st->codec )
 880         {
 881                 avformat_lock();
 882                 avcodec_close(st->codec);
 883                 avformat_unlock();
 884         }
 885 }
 886
 887 static inline long time_difference( struct timeval *time1 )
 888 {
 889         struct timeval time2;
 890         gettimeofday( &time2, NULL );
 891         return time2.tv_sec * 1000000 + time2.tv_usec - time1->tv_sec * 1000000 - time1->tv_usec;
 892 }
 893
 894 /** The main thread - the argument is simply the consumer.
 895 */
 896
 897 static void *consumer_thread( void *arg )
 898 {
 899         // Map the argument to the object
 900         mlt_consumer consumer = arg;
 901
 902         // Get the properties
 903         mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 904
 905         // Get the terminate on pause property
 906         int terminate_on_pause = mlt_properties_get_int( properties, "terminate_on_pause" );
 907         int terminated = 0;
 908
 909         // Determine if feed is slow (for realtime stuff)
 910         int real_time_output = mlt_properties_get_int( properties, "real_time" );
 911
 912         // Time structures
 913         struct timeval ante;
 914
 915         // Get the frame rate
 916         double fps = mlt_properties_get_double( properties, "fps" );
 917
 918         // Get width and height
 919         int width = mlt_properties_get_int( properties, "width" );
 920         int height = mlt_properties_get_int( properties, "height" );
 921         int img_width = width;
 922         int img_height = height;
 923
 924         // Get default audio properties
 925         mlt_audio_format aud_fmt = mlt_audio_s16;
 926         int channels = mlt_properties_get_int( properties, "channels" );
 927         int total_channels = channels;
 928         int frequency = mlt_properties_get_int( properties, "frequency" );
 929         int16_t *pcm = NULL;
 930         int samples = 0;
 931
 932         // AVFormat audio buffer and frame size
 933         int audio_outbuf_size = AUDIO_BUFFER_SIZE;
 934         uint8_t *audio_outbuf = av_malloc( audio_outbuf_size );
 935         int audio_input_frame_size = 0;
 936
 937         // AVFormat video buffer and frame count
 938         int frame_count = 0;
 939         int video_outbuf_size = VIDEO_BUFFER_SIZE;
 940         uint8_t *video_outbuf = av_malloc( video_outbuf_size );
 941
 942         // Used for the frame properties
 943         mlt_frame frame = NULL;
 944         mlt_properties frame_properties = NULL;
 945
 946         // Get the queues
 947         mlt_deque queue = mlt_properties_get_data( properties, "frame_queue", NULL );
 948         sample_fifo fifo = mlt_properties_get_data( properties, "sample_fifo", NULL );
 949
 950         // Need two av pictures for converting
 951         AVFrame *output = NULL;
 952         AVFrame *input = alloc_picture( PIX_FMT_YUYV422, width, height );
 953
 954         // For receiving images from an mlt_frame
 955         uint8_t *image;
 956         mlt_image_format img_fmt = mlt_image_yuv422;
 957
 958         // For receiving audio samples back from the fifo
 959         int16_t *audio_buf_1 = av_malloc( AUDIO_ENCODE_BUFFER_SIZE );
 960         int16_t *audio_buf_2 = NULL;
 961         int count = 0;
 962
 963         // Allocate the context
 964 #if (LIBAVFORMAT_VERSION_INT >= ((52<<16)+(26<<8)+0))
 965         AVFormatContext *oc = avformat_alloc_context( );
 966 #else
 967         AVFormatContext *oc = av_alloc_format_context( );
 968 #endif
 969
 970         // Streams
 971         AVStream *video_st = NULL;
 972         AVStream *audio_st[ MAX_AUDIO_STREAMS ];
 973
 974         // Time stamps
 975         double audio_pts = 0;
 976         double video_pts = 0;
 977
 978         // Frames dispatched
 979         long int frames = 0;
 980         long int total_time = 0;
 981
 982         // Determine the format
 983         AVOutputFormat *fmt = NULL;
 984         const char *filename = mlt_properties_get( properties, "target" );
 985         char *format = mlt_properties_get( properties, "f" );
 986         char *vcodec = mlt_properties_get( properties, "vcodec" );
 987         char *acodec = mlt_properties_get( properties, "acodec" );
 988
 989         // Used to store and override codec ids
 990         int audio_codec_id;
 991         int video_codec_id;
 992
 993         // Misc
 994         char key[27];
 995         mlt_properties frame_meta_properties = mlt_properties_new();
 996
 997         // Initialize audio_st
 998         int i = MAX_AUDIO_STREAMS;
 999         while ( i-- )
1000                 audio_st[i] = NULL;
1001
1002         // Check for user selected format first
1003         if ( format != NULL )
1004 #if LIBAVFORMAT_VERSION_INT < ((52<<16)+(45<<8)+0)
1005                 fmt = guess_format( format, NULL, NULL );
1006 #else
1007                 fmt = av_guess_format( format, NULL, NULL );
1008 #endif
1009
1010         // Otherwise check on the filename
1011         if ( fmt == NULL && filename != NULL )
1012 #if LIBAVFORMAT_VERSION_INT < ((52<<16)+(45<<8)+0)
1013                 fmt = guess_format( NULL, filename, NULL );
1014 #else
1015                 fmt = av_guess_format( NULL, filename, NULL );
1016 #endif
1017
1018         // Otherwise default to mpeg
1019         if ( fmt == NULL )
1020 #if LIBAVFORMAT_VERSION_INT < ((52<<16)+(45<<8)+0)
1021                 fmt = guess_format( "mpeg", NULL, NULL );
1022 #else
1023                 fmt = av_guess_format( "mpeg", NULL, NULL );
1024 #endif
1025
1026         // We need a filename - default to stdout?
1027         if ( filename == NULL || !strcmp( filename, "" ) )
1028                 filename = "pipe:";
1029
1030         // Get the codec ids selected
1031         audio_codec_id = fmt->audio_codec;
1032         video_codec_id = fmt->video_codec;
1033
1034         // Check for audio codec overides
1035         if ( ( acodec && strcmp( acodec, "none" ) == 0 ) || mlt_properties_get_int( properties, "an" ) )
1036                 audio_codec_id = CODEC_ID_NONE;
1037         else if ( acodec )
1038         {
1039                 AVCodec *p = avcodec_find_encoder_by_name( acodec );
1040                 if ( p != NULL )
1041                 {
1042                         audio_codec_id = p->id;
1043                         if ( audio_codec_id == CODEC_ID_AC3 && avcodec_find_encoder_by_name( "ac3_fixed" ) )
1044                         {
1045                                 mlt_properties_set( properties, "_acodec", "ac3_fixed" );
1046                                 acodec = mlt_properties_get( properties, "_acodec" );
1047                         }
1048                 }
1049                 else
1050                         mlt_log_warning( MLT_CONSUMER_SERVICE( consumer ), "audio codec %s unrecognised - ignoring\n", acodec );
1051         }
1052
1053         // Check for video codec overides
1054         if ( ( vcodec && strcmp( vcodec, "none" ) == 0 ) || mlt_properties_get_int( properties, "vn" ) )
1055                 video_codec_id = CODEC_ID_NONE;
1056         else if ( vcodec )
1057         {
1058                 AVCodec *p = avcodec_find_encoder_by_name( vcodec );
1059                 if ( p != NULL )
1060                         video_codec_id = p->id;
1061                 else
1062                         mlt_log_warning( MLT_CONSUMER_SERVICE( consumer ), "video codec %s unrecognised - ignoring\n", vcodec );
1063         }
1064
1065         // Write metadata
1066 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(31<<8)+0)
1067         for ( i = 0; i < mlt_properties_count( properties ); i++ )
1068         {
1069                 char *name = mlt_properties_get_name( properties, i );
1070                 if ( name && !strncmp( name, "meta.attr.", 10 ) )
1071                 {
1072                         char *key = strdup( name + 10 );
1073                         char *markup = strrchr( key, '.' );
1074                         if ( markup && !strcmp( markup, ".markup") )
1075                         {
1076                                 markup[0] = '\0';
1077                                 if ( !strstr( key, ".stream." ) )
1078 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(43<<8)+0)
1079                                         av_metadata_set2( &oc->metadata, key, mlt_properties_get_value( properties, i ), 0 );
1080 #else
1081                                         av_metadata_set( &oc->metadata, key, mlt_properties_get_value( properties, i ) );
1082 #endif
1083                         }
1084                         free( key );
1085                 }
1086         }
1087 #else
1088         char *tmp = NULL;
1089         int metavalue;
1090
1091         tmp = mlt_properties_get( properties, "meta.attr.title.markup");
1092         if (tmp != NULL) snprintf( oc->title, sizeof(oc->title), "%s", tmp );
1093
1094         tmp = mlt_properties_get( properties, "meta.attr.comment.markup");
1095         if (tmp != NULL) snprintf( oc->comment, sizeof(oc->comment), "%s", tmp );
1096
1097         tmp = mlt_properties_get( properties, "meta.attr.author.markup");
1098         if (tmp != NULL) snprintf( oc->author, sizeof(oc->author), "%s", tmp );
1099
1100         tmp = mlt_properties_get( properties, "meta.attr.copyright.markup");
1101         if (tmp != NULL) snprintf( oc->copyright, sizeof(oc->copyright), "%s", tmp );
1102
1103         tmp = mlt_properties_get( properties, "meta.attr.album.markup");
1104         if (tmp != NULL) snprintf( oc->album, sizeof(oc->album), "%s", tmp );
1105
1106         metavalue = mlt_properties_get_int( properties, "meta.attr.year.markup");
1107         if (metavalue != 0) oc->year = metavalue;
1108
1109         metavalue = mlt_properties_get_int( properties, "meta.attr.track.markup");
1110         if (metavalue != 0) oc->track = metavalue;
1111 #endif
1112
1113         oc->oformat = fmt;
1114         snprintf( oc->filename, sizeof(oc->filename), "%s", filename );
1115
1116         // Add audio and video streams
1117         if ( video_codec_id != CODEC_ID_NONE )
1118                 video_st = add_video_stream( consumer, oc, video_codec_id );
1119         if ( audio_codec_id != CODEC_ID_NONE )
1120         {
1121                 int is_multi = 0;
1122
1123                 total_channels = 0;
1124                 // multitrack audio
1125                 for ( i = 0; i < MAX_AUDIO_STREAMS; i++ )
1126                 {
1127                         sprintf( key, "channels.%d", i );
1128                         int j = mlt_properties_get_int( properties, key );
1129                         if ( j )
1130                         {
1131                                 is_multi = 1;
1132                                 total_channels += j;
1133                                 audio_st[i] = add_audio_stream( consumer, oc, audio_codec_id, j );
1134                         }
1135                 }
1136                 // single track
1137                 if ( !is_multi )
1138                 {
1139                         audio_st[0] = add_audio_stream( consumer, oc, audio_codec_id, channels );
1140                         total_channels = channels;
1141                 }
1142         }
1143
1144         // Set the parameters (even though we have none...)
1145         if ( av_set_parameters(oc, NULL) >= 0 )
1146         {
1147                 oc->preload = ( int )( mlt_properties_get_double( properties, "muxpreload" ) * AV_TIME_BASE );
1148                 oc->max_delay= ( int )( mlt_properties_get_double( properties, "muxdelay" ) * AV_TIME_BASE );
1149
1150                 // Process properties as AVOptions
1151                 char *fpre = mlt_properties_get( properties, "fpre" );
1152                 if ( fpre )
1153                 {
1154                         mlt_properties p = mlt_properties_load( fpre );
1155                         apply_properties( oc, p, AV_OPT_FLAG_ENCODING_PARAM, 1 );
1156                         mlt_properties_close( p );
1157                 }
1158                 apply_properties( oc, properties, AV_OPT_FLAG_ENCODING_PARAM, 0 );
1159
1160                 if ( video_st && !open_video( oc, video_st ) )
1161                         video_st = NULL;
1162                 for ( i = 0; i < MAX_AUDIO_STREAMS && audio_st[i]; i++ )
1163                 {
1164                         audio_input_frame_size = open_audio( oc, audio_st[i], audio_outbuf_size,
1165                                 audio_codec_id == CODEC_ID_AC3 ? acodec : NULL );
1166                         if ( !audio_input_frame_size )
1167                                 audio_st[i] = NULL;
1168                 }
1169
1170                 // Open the output file, if needed
1171                 if ( !( fmt->flags & AVFMT_NOFILE ) )
1172                 {
1173                         if ( url_fopen( &oc->pb, filename, URL_WRONLY ) < 0 )
1174                         {
1175                                 mlt_log_error( MLT_CONSUMER_SERVICE( consumer ), "Could not open '%s'\n", filename );
1176                                 mlt_properties_set_int( properties, "running", 0 );
1177                         }
1178                 }
1179
1180                 // Write the stream header.
1181                 if ( mlt_properties_get_int( properties, "running" ) )
1182                         av_write_header( oc );
1183         }
1184         else
1185         {
1186                 mlt_log_error( MLT_CONSUMER_SERVICE( consumer ), "Invalid output format parameters\n" );
1187                 mlt_properties_set_int( properties, "running", 0 );
1188         }
1189
1190         // Allocate picture
1191         if ( video_st )
1192                 output = alloc_picture( video_st->codec->pix_fmt, width, height );
1193
1194         // Last check - need at least one stream
1195         if ( !audio_st[0] && !video_st )
1196                 mlt_properties_set_int( properties, "running", 0 );
1197
1198         // Get the starting time (can ignore the times above)
1199         gettimeofday( &ante, NULL );
1200
1201         // Loop while running
1202         while( mlt_properties_get_int( properties, "running" ) &&
1203                ( !terminated || ( video_st && mlt_deque_count( queue ) ) ) )
1204         {
1205                 frame = mlt_consumer_rt_frame( consumer );
1206
1207                 // Check that we have a frame to work with
1208                 if ( frame != NULL )
1209                 {
1210                         // Increment frames dispatched
1211                         frames ++;
1212
1213                         // Default audio args
1214                         frame_properties = MLT_FRAME_PROPERTIES( frame );
1215
1216                         // Check for the terminated condition
1217                         terminated = terminate_on_pause && mlt_properties_get_double( frame_properties, "_speed" ) == 0.0;
1218
1219                         // Get audio and append to the fifo
1220                         if ( !terminated && audio_st[0] )
1221                         {
1222                                 samples = mlt_sample_calculator( fps, frequency, count ++ );
1223                                 mlt_frame_get_audio( frame, (void**) &pcm, &aud_fmt, &frequency, &channels, &samples );
1224
1225                                 // Save the audio channel remap properties for later
1226                                 mlt_properties_pass( frame_meta_properties, frame_properties, "meta.map.audio." );
1227
1228                                 // Create the fifo if we don't have one
1229                                 if ( fifo == NULL )
1230                                 {
1231                                         fifo = sample_fifo_init( frequency, channels );
1232                                         mlt_properties_set_data( properties, "sample_fifo", fifo, 0, ( mlt_destructor )sample_fifo_close, NULL );
1233                                 }
1234
1235                                 // Silence if not normal forward speed
1236                                 if ( mlt_properties_get_double( frame_properties, "_speed" ) != 1.0 )
1237                                         memset( pcm, 0, samples * channels * 2 );
1238
1239                                 // Append the samples
1240                                 sample_fifo_append( fifo, pcm, samples * channels );
1241                                 total_time += ( samples * 1000000 ) / frequency;
1242
1243                                 if ( !video_st )
1244                                         mlt_events_fire( properties, "consumer-frame-show", frame, NULL );
1245                         }
1246
1247                         // Encode the image
1248                         if ( !terminated && video_st )
1249                                 mlt_deque_push_back( queue, frame );
1250                         else
1251                                 mlt_frame_close( frame );
1252                 }
1253
1254                 // While we have stuff to process, process...
1255                 while ( 1 )
1256                 {
1257                         // Write interleaved audio and video frames
1258                         if ( !video_st || ( video_st && audio_st[0] && audio_pts < video_pts ) )
1259                         {
1260                                 // Write audio
1261                                 if ( ( video_st && terminated ) || ( channels * audio_input_frame_size ) < sample_fifo_used( fifo ) )
1262                                 {
1263                                         int j = 0; // channel offset into interleaved source buffer
1264                                         int n = FFMIN( FFMIN( channels * audio_input_frame_size, sample_fifo_used( fifo ) ), AUDIO_ENCODE_BUFFER_SIZE );
1265
1266                                         // Get the audio samples
1267                                         if ( n > 0 )
1268                                         {
1269                                                 sample_fifo_fetch( fifo, audio_buf_1, n );
1270                                         }
1271                                         else if ( audio_codec_id == CODEC_ID_VORBIS && terminated )
1272                                         {
1273                                                 // This prevents an infinite loop when some versions of vorbis do not
1274                                                 // increment pts when encoding silence.
1275                                                 audio_pts = video_pts;
1276                                                 break;
1277                                         }
1278                                         else
1279                                         {
1280                                                 memset( audio_buf_1, 0, AUDIO_ENCODE_BUFFER_SIZE );
1281                                         }
1282                                         samples = n / channels;
1283
1284                                         // For each output stream
1285                                         for ( i = 0; i < MAX_AUDIO_STREAMS && audio_st[i] && j < total_channels; i++ )
1286                                         {
1287                                                 AVStream *stream = audio_st[i];
1288                                                 AVCodecContext *codec = stream->codec;
1289                                                 AVPacket pkt;
1290
1291                                                 av_init_packet( &pkt );
1292
1293                                                 // Optimized for single track and no channel remap
1294                                                 if ( !audio_st[1] && !mlt_properties_count( frame_meta_properties ) )
1295                                                 {
1296                                                         pkt.size = avcodec_encode_audio( codec, audio_outbuf, audio_outbuf_size, audio_buf_1 );
1297                                                 }
1298                                                 else
1299                                                 {
1300                                                         // Extract the audio channels according to channel mapping
1301                                                         int dest_offset = 0; // channel offset into interleaved dest buffer
1302
1303                                                         // Get the number of channels for this stream
1304                                                         sprintf( key, "channels.%d", i );
1305                                                         int current_channels = mlt_properties_get_int( properties, key );
1306
1307                                                         // Clear the destination audio buffer.
1308                                                         if ( !audio_buf_2 )
1309                                                                 audio_buf_2 = av_mallocz( AUDIO_ENCODE_BUFFER_SIZE );
1310                                                         else
1311                                                                 memset( audio_buf_2, 0, AUDIO_ENCODE_BUFFER_SIZE );
1312
1313                                                         // For each output channel
1314                                                         while ( dest_offset < current_channels && j < total_channels )
1315                                                         {
1316                                                                 int map_start = -1, map_channels = 0;
1317                                                                 int source_offset = 0;
1318                                                                 int k;
1319
1320                                                                 // Look for a mapping that starts at j
1321                                                                 for ( k = 0; k < (MAX_AUDIO_STREAMS * 2) && map_start != j; k++ )
1322                                                                 {
1323                                                                         sprintf( key, "%d.channels", k );
1324                                                                         map_channels = mlt_properties_get_int( frame_meta_properties, key );
1325                                                                         sprintf( key, "%d.start", k );
1326                                                                         if ( mlt_properties_get( frame_meta_properties, key ) )
1327                                                                                 map_start = mlt_properties_get_int( frame_meta_properties, key );
1328                                                                         if ( map_start != j )
1329                                                                                 source_offset += map_channels;
1330                                                                 }
1331
1332                                                                 // If no mapping
1333                                                                 if ( map_start != j )
1334                                                                 {
1335                                                                         map_channels = current_channels;
1336                                                                         source_offset = j;
1337                                                                 }
1338
1339                                                                 // Copy samples if source offset valid
1340                                                                 if ( source_offset < channels )
1341                                                                 {
1342                                                                         // Interleave the audio buffer with the # channels for this stream/mapping.
1343                                                                         for ( k = 0; k < map_channels; k++, j++, source_offset++, dest_offset++ )
1344                                                                         {
1345                                                                                 int16_t *src = audio_buf_1 + source_offset;
1346                                                                                 int16_t *dest = audio_buf_2 + dest_offset;
1347                                                                                 int s = samples + 1;
1348
1349                                                                                 while ( --s ) {
1350                                                                                         *dest = *src;
1351                                                                                         dest += current_channels;
1352                                                                                         src += channels;
1353                                                                                 }
1354                                                                         }
1355                                                                 }
1356                                                                 // Otherwise silence
1357                                                                 else
1358                                                                 {
1359                                                                         j += current_channels;
1360                                                                         dest_offset += current_channels;
1361                                                                 }
1362                                                         }
1363                                                         pkt.size = avcodec_encode_audio( codec, audio_outbuf, audio_outbuf_size, audio_buf_2 );
1364                                                 }
1365
1366                                                 // Write the compressed frame in the media file
1367                                                 if ( codec->coded_frame && codec->coded_frame->pts != AV_NOPTS_VALUE )
1368                                                 {
1369                                                         pkt.pts = av_rescale_q( codec->coded_frame->pts, codec->time_base, stream->time_base );
1370                                                         mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), "audio stream %d pkt pts %lld frame pts %lld",
1371                                                                 stream->index, pkt.pts, codec->coded_frame->pts );
1372                                                 }
1373                                                 pkt.flags |= PKT_FLAG_KEY;
1374                                                 pkt.stream_index = stream->index;
1375                                                 pkt.data = audio_outbuf;
1376
1377                                                 if ( pkt.size > 0 )
1378                                                 {
1379                                                         if ( av_interleaved_write_frame( oc, &pkt ) )
1380                                                         {
1381                                                                 mlt_log_fatal( MLT_CONSUMER_SERVICE( consumer ), "error writing audio frame\n" );
1382                                                                 mlt_events_fire( properties, "consumer-fatal-error", NULL );
1383                                                                 goto on_fatal_error;
1384                                                         }
1385                                                 }
1386
1387                                                 mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), " frame_size %d\n", codec->frame_size );
1388                                                 if ( i == 0 )
1389                                                 {
1390                                                         audio_pts = (double)stream->pts.val * av_q2d( stream->time_base );
1391                                                 }
1392                                         }
1393                                 }
1394                                 else
1395                                 {
1396                                         break;
1397                                 }
1398                         }
1399                         else if ( video_st )
1400                         {
1401                                 // Write video
1402                                 if ( mlt_deque_count( queue ) )
1403                                 {
1404                                         int out_size, ret = 0;
1405                                         AVCodecContext *c;
1406
1407                                         frame = mlt_deque_pop_front( queue );
1408                                         frame_properties = MLT_FRAME_PROPERTIES( frame );
1409
1410                                         c = video_st->codec;
1411
1412                                         if ( mlt_properties_get_int( frame_properties, "rendered" ) )
1413                                         {
1414                                                 int i = 0;
1415                                                 uint8_t *p;
1416                                                 uint8_t *q;
1417
1418                                                 mlt_frame_get_image( frame, &image, &img_fmt, &img_width, &img_height, 0 );
1419
1420                                                 q = image;
1421
1422                                                 // Convert the mlt frame to an AVPicture
1423                                                 for ( i = 0; i < height; i ++ )
1424                                                 {
1425                                                         p = input->data[ 0 ] + i * input->linesize[ 0 ];
1426                                                         memcpy( p, q, width * 2 );
1427                                                         q += width * 2;
1428                                                 }
1429
1430                                                 // Do the colour space conversion
1431 #ifdef SWSCALE
1432                                                 int flags = SWS_BILINEAR;
1433 #ifdef USE_MMX
1434                                                 flags |= SWS_CPU_CAPS_MMX;
1435 #endif
1436 #ifdef USE_SSE
1437                                                 flags |= SWS_CPU_CAPS_MMX2;
1438 #endif
1439                                                 struct SwsContext *context = sws_getContext( width, height, PIX_FMT_YUYV422,
1440                                                         width, height, video_st->codec->pix_fmt, flags, NULL, NULL, NULL);
1441                                                 sws_scale( context, input->data, input->linesize, 0, height,
1442                                                         output->data, output->linesize);
1443                                                 sws_freeContext( context );
1444 #else
1445                                                 img_convert( ( AVPicture * )output, video_st->codec->pix_fmt, ( AVPicture * )input, PIX_FMT_YUYV422, width, height );
1446 #endif
1447
1448                                                 mlt_events_fire( properties, "consumer-frame-show", frame, NULL );
1449
1450                                                 // Apply the alpha if applicable
1451                                                 if ( video_st->codec->pix_fmt == PIX_FMT_RGB32 )
1452                                                 {
1453                                                         uint8_t *alpha = mlt_frame_get_alpha_mask( frame );
1454                                                         register int n;
1455
1456                                                         for ( i = 0; i < height; i ++ )
1457                                                         {
1458                                                                 n = ( width + 7 ) / 8;
1459                                                                 p = output->data[ 0 ] + i * output->linesize[ 0 ] + 3;
1460
1461                                                                 switch( width % 8 )
1462                                                                 {
1463                                                                         case 0: do { *p = *alpha++; p += 4;
1464                                                                         case 7:          *p = *alpha++; p += 4;
1465                                                                         case 6:          *p = *alpha++; p += 4;
1466                                                                         case 5:          *p = *alpha++; p += 4;
1467                                                                         case 4:          *p = *alpha++; p += 4;
1468                                                                         case 3:          *p = *alpha++; p += 4;
1469                                                                         case 2:          *p = *alpha++; p += 4;
1470                                                                         case 1:          *p = *alpha++; p += 4;
1471                                                                                         }
1472                                                                                         while( --n );
1473                                                                 }
1474                                                         }
1475                                                 }
1476                                         }
1477
1478                                         if (oc->oformat->flags & AVFMT_RAWPICTURE)
1479                                         {
1480                                                 // raw video case. The API will change slightly in the near future for that
1481                                                 AVPacket pkt;
1482                                                 av_init_packet(&pkt);
1483
1484                                                 pkt.flags |= PKT_FLAG_KEY;
1485                                                 pkt.stream_index= video_st->index;
1486                                                 pkt.data= (uint8_t *)output;
1487                                                 pkt.size= sizeof(AVPicture);
1488
1489                                                 ret = av_write_frame(oc, &pkt);
1490                                                 video_pts += c->frame_size;
1491                                         }
1492                                         else
1493                                         {
1494                                                 // Set the quality
1495                                                 output->quality = video_st->quality;
1496
1497                                                 // Set frame interlace hints
1498                                                 output->interlaced_frame = !mlt_properties_get_int( frame_properties, "progressive" );
1499                                                 output->top_field_first = mlt_properties_get_int( frame_properties, "top_field_first" );
1500                                                 output->pts = frame_count;
1501
1502                                                 // Encode the image
1503                                                 out_size = avcodec_encode_video(c, video_outbuf, video_outbuf_size, output );
1504
1505                                                 // If zero size, it means the image was buffered
1506                                                 if ( out_size > 0 )
1507                                                 {
1508                                                         AVPacket pkt;
1509                                                         av_init_packet( &pkt );
1510
1511                                                         if ( c->coded_frame && c->coded_frame->pts != AV_NOPTS_VALUE )
1512                                                                 pkt.pts= av_rescale_q( c->coded_frame->pts, c->time_base, video_st->time_base );
1513                                                         mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), "video pkt pts %lld frame pts %lld", pkt.pts, c->coded_frame->pts );
1514                                                         if( c->coded_frame && c->coded_frame->key_frame )
1515                                                                 pkt.flags |= PKT_FLAG_KEY;
1516                                                         pkt.stream_index= video_st->index;
1517                                                         pkt.data= video_outbuf;
1518                                                         pkt.size= out_size;
1519
1520                                                         // write the compressed frame in the media file
1521                                                         ret = av_interleaved_write_frame(oc, &pkt);
1522                                                         mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), " frame_size %d\n", c->frame_size );
1523                                                         video_pts = (double)video_st->pts.val * av_q2d( video_st->time_base );
1524
1525                                                         // Dual pass logging
1526                                                         if ( mlt_properties_get_data( properties, "_logfile", NULL ) && c->stats_out )
1527                                                                 fprintf( mlt_properties_get_data( properties, "_logfile", NULL ), "%s", c->stats_out );
1528                                                 }
1529                                                 else if ( out_size < 0 )
1530                                                 {
1531                                                         mlt_log_warning( MLT_CONSUMER_SERVICE( consumer ), "error with video encode %d\n", frame_count );
1532                                                 }
1533                                         }
1534                                         frame_count++;
1535                                         if ( ret )
1536                                         {
1537                                                 mlt_log_fatal( MLT_CONSUMER_SERVICE( consumer ), "error writing video frame\n" );
1538                                                 mlt_events_fire( properties, "consumer-fatal-error", NULL );
1539                                                 goto on_fatal_error;
1540                                         }
1541                                         mlt_frame_close( frame );
1542                                 }
1543                                 else
1544                                 {
1545                                         break;
1546                                 }
1547                         }
1548                         if ( audio_st[0] )
1549                                 mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), "audio pts %lld (%f) ", audio_st[0]->pts.val, audio_pts );
1550                         if ( video_st )
1551                                 mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), "video pts %lld (%f) ", video_st->pts.val, video_pts );
1552                         mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), "\n" );
1553                 }
1554
1555                 if ( real_time_output == 1 && frames % 2 == 0 )
1556                 {
1557                         long passed = time_difference( &ante );
1558                         if ( fifo != NULL )
1559                         {
1560                                 long pending = ( ( ( long )sample_fifo_used( fifo ) * 1000 ) / frequency ) * 1000;
1561                                 passed -= pending;
1562                         }
1563                         if ( passed < total_time )
1564                         {
1565                                 long total = ( total_time - passed );
1566                                 struct timespec t = { total / 1000000, ( total % 1000000 ) * 1000 };
1567                                 nanosleep( &t, NULL );
1568                         }
1569                 }
1570         }
1571
1572         // Flush the encoder buffers
1573         if ( real_time_output <= 0 )
1574         {
1575                 // Flush audio fifo
1576                 // TODO: flush all audio streams
1577                 if ( audio_st[0] && audio_st[0]->codec->frame_size > 1 ) for (;;)
1578                 {
1579                         AVCodecContext *c = audio_st[0]->codec;
1580                         AVPacket pkt;
1581                         av_init_packet( &pkt );
1582                         pkt.size = 0;
1583
1584                         if ( /*( c->capabilities & CODEC_CAP_SMALL_LAST_FRAME ) &&*/
1585                                 ( channels * audio_input_frame_size < sample_fifo_used( fifo ) ) )
1586                         {
1587                                 sample_fifo_fetch( fifo, audio_buf_1, channels * audio_input_frame_size );
1588                                 pkt.size = avcodec_encode_audio( c, audio_outbuf, audio_outbuf_size, audio_buf_1 );
1589                         }
1590                         if ( pkt.size <= 0 )
1591                                 pkt.size = avcodec_encode_audio( c, audio_outbuf, audio_outbuf_size, NULL );
1592                         mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), "flushing audio size %d\n", pkt.size );
1593                         if ( pkt.size <= 0 )
1594                                 break;
1595
1596                         // Write the compressed frame in the media file
1597                         if ( c->coded_frame && c->coded_frame->pts != AV_NOPTS_VALUE )
1598                                 pkt.pts = av_rescale_q( c->coded_frame->pts, c->time_base, audio_st[0]->time_base );
1599                         pkt.flags |= PKT_FLAG_KEY;
1600                         pkt.stream_index = audio_st[0]->index;
1601                         pkt.data = audio_outbuf;
1602                         if ( av_interleaved_write_frame( oc, &pkt ) != 0 )
1603                         {
1604                                 mlt_log_fatal( MLT_CONSUMER_SERVICE( consumer ), "error writing flushed audio frame\n" );
1605                                 mlt_events_fire( properties, "consumer-fatal-error", NULL );
1606                                 goto on_fatal_error;
1607                         }
1608                 }
1609
1610                 // Flush video
1611                 if ( video_st && !( oc->oformat->flags & AVFMT_RAWPICTURE ) ) for (;;)
1612                 {
1613                         AVCodecContext *c = video_st->codec;
1614                         AVPacket pkt;
1615                         av_init_packet( &pkt );
1616
1617                         // Encode the image
1618                         pkt.size = avcodec_encode_video( c, video_outbuf, video_outbuf_size, NULL );
1619                         mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), "flushing video size %d\n", pkt.size );
1620                         if ( pkt.size <= 0 )
1621                                 break;
1622
1623                         if ( c->coded_frame && c->coded_frame->pts != AV_NOPTS_VALUE )
1624                                 pkt.pts= av_rescale_q( c->coded_frame->pts, c->time_base, video_st->time_base );
1625                         if( c->coded_frame && c->coded_frame->key_frame )
1626                                 pkt.flags |= PKT_FLAG_KEY;
1627                         pkt.stream_index = video_st->index;
1628                         pkt.data = video_outbuf;
1629
1630                         // write the compressed frame in the media file
1631                         if ( av_interleaved_write_frame( oc, &pkt ) != 0 )
1632                         {
1633                                 mlt_log_fatal( MLT_CONSUMER_SERVICE(consumer), "error writing flushed video frame\n" );
1634                                 mlt_events_fire( properties, "consumer-fatal-error", NULL );
1635                                 goto on_fatal_error;
1636                         }
1637                         // Dual pass logging
1638                         if ( mlt_properties_get_data( properties, "_logfile", NULL ) && c->stats_out )
1639                                 fprintf( mlt_properties_get_data( properties, "_logfile", NULL ), "%s", c->stats_out );
1640                 }
1641         }
1642
1643 on_fatal_error:
1644
1645         // Write the trailer, if any
1646         av_write_trailer( oc );
1647
1648         // close each codec
1649         if ( video_st )
1650                 close_video(oc, video_st);
1651         for ( i = 0; i < MAX_AUDIO_STREAMS && audio_st[i]; i++ )
1652                 close_audio( oc, audio_st[i] );
1653
1654         // Free the streams
1655         for ( i = 0; i < oc->nb_streams; i++ )
1656                 av_freep( &oc->streams[i] );
1657
1658         // Close the output file
1659         if ( !( fmt->flags & AVFMT_NOFILE ) )
1660 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(0<<8)+0)
1661                 url_fclose( oc->pb );
1662 #else
1663                 url_fclose( &oc->pb );
1664 #endif
1665
1666         // Clean up input and output frames
1667         if ( output )
1668                 av_free( output->data[0] );
1669         av_free( output );
1670         av_free( input->data[0] );
1671         av_free( input );
1672         av_free( video_outbuf );
1673         av_free( audio_buf_1 );
1674         av_free( audio_buf_2 );
1675
1676         // Free the stream
1677         av_free( oc );
1678
1679         // Just in case we terminated on pause
1680         mlt_properties_set_int( properties, "running", 0 );
1681
1682         mlt_consumer_stopped( consumer );
1683         mlt_properties_close( frame_meta_properties );
1684
1685         if ( mlt_properties_get_int( properties, "pass" ) > 1 )
1686         {
1687                 // Remove the dual pass log file
1688                 if ( mlt_properties_get( properties, "_logfilename" ) )
1689                         remove( mlt_properties_get( properties, "_logfilename" ) );
1690
1691                 // Remove the x264 dual pass logs
1692                 char *cwd = getcwd( NULL, 0 );
1693                 const char *file = "x264_2pass.log";
1694                 char *full = malloc( strlen( cwd ) + strlen( file ) + 2 );
1695                 sprintf( full, "%s/%s", cwd, file );
1696                 remove( full );
1697                 free( full );
1698                 file = "x264_2pass.log.temp";
1699                 full = malloc( strlen( cwd ) + strlen( file ) + 2 );
1700                 sprintf( full, "%s/%s", cwd, file );
1701                 remove( full );
1702                 free( full );
1703                 file = "x264_2pass.log.mbtree";
1704                 full = malloc( strlen( cwd ) + strlen( file ) + 2 );
1705                 sprintf( full, "%s/%s", cwd, file );
1706                 remove( full );
1707                 free( full );
1708                 free( cwd );
1709                 remove( "x264_2pass.log.temp" );
1710         }
1711
1712         return NULL;
1713 }
1714
1715 /** Close the consumer.
1716 */
1717
1718 static void consumer_close( mlt_consumer consumer )
1719 {
1720         // Stop the consumer
1721         mlt_consumer_stop( consumer );
1722
1723         // Close the parent
1724         mlt_consumer_close( consumer );
1725
1726         // Free the memory
1727         free( consumer );
1728 }