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
  26 // System header files
  27 #include <stdio.h>
  28 #include <stdlib.h>
  29 #include <string.h>
  30 #include <limits.h>
  31 #include <pthread.h>
  32 #include <sys/time.h>
  33 #include <math.h>
  34
  35 // avformat header files
  36 #include <avformat.h>
  37 #ifdef SWSCALE
  38 #include <swscale.h>
  39 #endif
  40 #include <opt.h>
  41
  42 //
  43 // This structure should be extended and made globally available in mlt
  44 //
  45
  46 typedef struct
  47 {
  48         int16_t *buffer;
  49         int size;
  50         int used;
  51         double time;
  52         int frequency;
  53         int channels;
  54 }
  55 *sample_fifo, sample_fifo_s;
  56
  57 sample_fifo sample_fifo_init( int frequency, int channels )
  58 {
  59         sample_fifo this = calloc( 1, sizeof( sample_fifo_s ) );
  60         this->frequency = frequency;
  61         this->channels = channels;
  62         return this;
  63 }
  64
  65 // sample_fifo_clear and check are temporarily aborted (not working as intended)
  66
  67 void sample_fifo_clear( sample_fifo this, double time )
  68 {
  69         int words = ( float )( time - this->time ) * this->frequency * this->channels;
  70         if ( ( int )( ( float )time * 100 ) < ( int )( ( float )this->time * 100 ) && this->used > words && words > 0 )
  71         {
  72                 memmove( this->buffer, &this->buffer[ words ], ( this->used - words ) * sizeof( int16_t ) );
  73                 this->used -= words;
  74                 this->time = time;
  75         }
  76         else if ( ( int )( ( float )time * 100 ) != ( int )( ( float )this->time * 100 ) )
  77         {
  78                 this->used = 0;
  79                 this->time = time;
  80         }
  81 }
  82
  83 void sample_fifo_check( sample_fifo this, double time )
  84 {
  85         if ( this->used == 0 )
  86         {
  87                 if ( ( int )( ( float )time * 100 ) < ( int )( ( float )this->time * 100 ) )
  88                         this->time = time;
  89         }
  90 }
  91
  92 void sample_fifo_append( sample_fifo this, int16_t *samples, int count )
  93 {
  94         if ( ( this->size - this->used ) < count )
  95         {
  96                 this->size += count * 5;
  97                 this->buffer = realloc( this->buffer, this->size * sizeof( int16_t ) );
  98         }
  99
 100         memcpy( &this->buffer[ this->used ], samples, count * sizeof( int16_t ) );
 101         this->used += count;
 102 }
 103
 104 int sample_fifo_used( sample_fifo this )
 105 {
 106         return this->used;
 107 }
 108
 109 int sample_fifo_fetch( sample_fifo this, int16_t *samples, int count )
 110 {
 111         if ( count > this->used )
 112                 count = this->used;
 113
 114         memcpy( samples, this->buffer, count * sizeof( int16_t ) );
 115         this->used -= count;
 116         memmove( this->buffer, &this->buffer[ count ], this->used * sizeof( int16_t ) );
 117
 118         this->time += ( double )count / this->channels / this->frequency;
 119
 120         return count;
 121 }
 122
 123 void sample_fifo_close( sample_fifo this )
 124 {
 125         free( this->buffer );
 126         free( this );
 127 }
 128
 129 // Forward references.
 130 static int consumer_start( mlt_consumer this );
 131 static int consumer_stop( mlt_consumer this );
 132 static int consumer_is_stopped( mlt_consumer this );
 133 static void *consumer_thread( void *arg );
 134 static void consumer_close( mlt_consumer this );
 135
 136 /** Initialise the dv consumer.
 137 */
 138
 139 mlt_consumer consumer_avformat_init( mlt_profile profile, char *arg )
 140 {
 141         // Allocate the consumer
 142         mlt_consumer this = mlt_consumer_new( profile );
 143
 144         // If memory allocated and initialises without error
 145         if ( this != NULL )
 146         {
 147                 // Get properties from the consumer
 148                 mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
 149
 150                 // Assign close callback
 151                 this->close = consumer_close;
 152
 153                 // Interpret the argument
 154                 if ( arg != NULL )
 155                         mlt_properties_set( properties, "target", arg );
 156
 157                 // sample and frame queue
 158                 mlt_properties_set_data( properties, "frame_queue", mlt_deque_init( ), 0, ( mlt_destructor )mlt_deque_close, NULL );
 159
 160                 // Audio options not fully handled by AVOptions
 161 #define QSCALE_NONE (-99999)
 162                 mlt_properties_set_int( properties, "aq", QSCALE_NONE );
 163
 164                 // Video options not fully handled by AVOptions
 165                 mlt_properties_set_int( properties, "dc", 8 );
 166
 167                 // Muxer options not fully handled by AVOptions
 168                 mlt_properties_set_double( properties, "muxdelay", 0.7 );
 169                 mlt_properties_set_double( properties, "muxpreload", 0.5 );
 170
 171                 // Ensure termination at end of the stream
 172                 mlt_properties_set_int( properties, "terminate_on_pause", 1 );
 173
 174                 // Default to separate processing threads for producer and consumer with no frame dropping!
 175                 mlt_properties_set_int( properties, "real_time", -1 );
 176
 177                 // Set up start/stop/terminated callbacks
 178                 this->start = consumer_start;
 179                 this->stop = consumer_stop;
 180                 this->is_stopped = consumer_is_stopped;
 181         }
 182
 183         // Return this
 184         return this;
 185 }
 186
 187 /** Start the consumer.
 188 */
 189
 190 static int consumer_start( mlt_consumer this )
 191 {
 192         // Get the properties
 193         mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
 194
 195         // Check that we're not already running
 196         if ( !mlt_properties_get_int( properties, "running" ) )
 197         {
 198                 // Allocate a thread
 199                 pthread_t *thread = calloc( 1, sizeof( pthread_t ) );
 200
 201                 // Get the width and height
 202                 int width = mlt_properties_get_int( properties, "width" );
 203                 int height = mlt_properties_get_int( properties, "height" );
 204
 205                 // Obtain the size property
 206                 char *size = mlt_properties_get( properties, "s" );
 207
 208                 // Interpret it
 209                 if ( size != NULL )
 210                 {
 211                         int tw, th;
 212                         if ( sscanf( size, "%dx%d", &tw, &th ) == 2 && tw > 0 && th > 0 )
 213                         {
 214                                 width = tw;
 215                                 height = th;
 216                         }
 217                         else
 218                         {
 219                                 fprintf( stderr, "%s: Invalid size property %s - ignoring.\n", __FILE__, size );
 220                         }
 221                 }
 222
 223                 // Now ensure we honour the multiple of two requested by libavformat
 224                 mlt_properties_set_int( properties, "width", ( width / 2 ) * 2 );
 225                 mlt_properties_set_int( properties, "height", ( height / 2 ) * 2 );
 226
 227                 // Apply AVOptions that are synonyms for standard mlt_consumer options
 228                 if ( mlt_properties_get( properties, "ac" ) )
 229                         mlt_properties_set_int( properties, "channels", mlt_properties_get_int( properties, "ac" ) );
 230                 if ( mlt_properties_get( properties, "ar" ) )
 231                         mlt_properties_set_int( properties, "frequency", mlt_properties_get_int( properties, "ar" ) );
 232
 233                 // Assign the thread to properties
 234                 mlt_properties_set_data( properties, "thread", thread, sizeof( pthread_t ), free, NULL );
 235
 236                 // Set the running state
 237                 mlt_properties_set_int( properties, "running", 1 );
 238
 239                 // Create the thread
 240                 pthread_create( thread, NULL, consumer_thread, this );
 241         }
 242         return 0;
 243 }
 244
 245 /** Stop the consumer.
 246 */
 247
 248 static int consumer_stop( mlt_consumer this )
 249 {
 250         // Get the properties
 251         mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
 252
 253         // Check that we're running
 254         if ( mlt_properties_get_int( properties, "running" ) )
 255         {
 256                 // Get the thread
 257                 pthread_t *thread = mlt_properties_get_data( properties, "thread", NULL );
 258
 259                 // Stop the thread
 260                 mlt_properties_set_int( properties, "running", 0 );
 261
 262                 // Wait for termination
 263                 pthread_join( *thread, NULL );
 264         }
 265
 266         return 0;
 267 }
 268
 269 /** Determine if the consumer is stopped.
 270 */
 271
 272 static int consumer_is_stopped( mlt_consumer this )
 273 {
 274         // Get the properties
 275         mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
 276         return !mlt_properties_get_int( properties, "running" );
 277 }
 278
 279 /** Process properties as AVOptions and apply to AV context obj
 280 */
 281
 282 static void apply_properties( void *obj, mlt_properties properties, int flags )
 283 {
 284         int i;
 285         int count = mlt_properties_count( properties );
 286         for ( i = 0; i < count; i++ )
 287         {
 288                 const char *opt_name = mlt_properties_get_name( properties, i );
 289                 const AVOption *opt = av_find_opt( obj, opt_name, NULL, flags, flags );
 290                 if ( opt != NULL )
 291                         av_set_string( obj, opt_name, mlt_properties_get( properties, opt_name) );
 292         }
 293 }
 294
 295 /** Add an audio output stream
 296 */
 297
 298 static AVStream *add_audio_stream( mlt_consumer this, AVFormatContext *oc, int codec_id )
 299 {
 300         // Get the properties
 301         mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
 302
 303         // Create a new stream
 304         AVStream *st = av_new_stream( oc, 1 );
 305
 306         // If created, then initialise from properties
 307         if ( st != NULL )
 308         {
 309                 AVCodecContext *c = st->codec;
 310
 311                 // Establish defaults from AVOptions
 312                 avcodec_get_context_defaults2( c, CODEC_TYPE_AUDIO );
 313
 314                 c->codec_id = codec_id;
 315                 c->codec_type = CODEC_TYPE_AUDIO;
 316
 317                 // Setup multi-threading
 318                 int thread_count = mlt_properties_get_int( properties, "threads" );
 319                 if ( thread_count == 0 && getenv( "MLT_AVFORMAT_THREADS" ) )
 320                         thread_count = atoi( getenv( "MLT_AVFORMAT_THREADS" ) );
 321                 if ( thread_count > 1 )
 322                         avcodec_thread_init( c, thread_count );
 323
 324                 if (oc->oformat->flags & AVFMT_GLOBALHEADER)
 325                         c->flags |= CODEC_FLAG_GLOBAL_HEADER;
 326
 327                 // Allow the user to override the audio fourcc
 328                 if ( mlt_properties_get( properties, "atag" ) )
 329                 {
 330                         char *tail = NULL;
 331                         char *arg = mlt_properties_get( properties, "atag" );
 332                         int tag = strtol( arg, &tail, 0);
 333                         if( !tail || *tail )
 334                                 tag = arg[ 0 ] + ( arg[ 1 ] << 8 ) + ( arg[ 2 ] << 16 ) + ( arg[ 3 ] << 24 );
 335                         c->codec_tag = tag;
 336                 }
 337
 338                 // Process properties as AVOptions
 339                 apply_properties( c, properties, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM );
 340
 341                 int audio_qscale = mlt_properties_get_int( properties, "aq" );
 342         if ( audio_qscale > QSCALE_NONE )
 343                 {
 344                         c->flags |= CODEC_FLAG_QSCALE;
 345                         c->global_quality = st->quality = FF_QP2LAMBDA * audio_qscale;
 346                 }
 347
 348                 // Set parameters controlled by MLT
 349                 c->sample_rate = mlt_properties_get_int( properties, "frequency" );
 350                 c->channels = mlt_properties_get_int( properties, "channels" );
 351
 352                 if ( mlt_properties_get( properties, "alang" ) != NULL )
 353                         strncpy( st->language, mlt_properties_get( properties, "alang" ), sizeof( st->language ) );
 354         }
 355         else
 356         {
 357                 fprintf( stderr, "%s: Could not allocate a stream for audio\n", __FILE__ );
 358         }
 359
 360         return st;
 361 }
 362
 363 static int open_audio( AVFormatContext *oc, AVStream *st, int audio_outbuf_size )
 364 {
 365         // We will return the audio input size from here
 366         int audio_input_frame_size = 0;
 367
 368         // Get the context
 369         AVCodecContext *c = st->codec;
 370
 371         // Find the encoder
 372         AVCodec *codec = avcodec_find_encoder( c->codec_id );
 373
 374         // Continue if codec found and we can open it
 375         if ( codec != NULL && avcodec_open( c, codec ) >= 0 )
 376         {
 377                 // ugly hack for PCM codecs (will be removed ASAP with new PCM
 378                 // support to compute the input frame size in samples
 379                 if ( c->frame_size <= 1 )
 380                 {
 381                         audio_input_frame_size = audio_outbuf_size / c->channels;
 382                         switch(st->codec->codec_id)
 383                         {
 384                                 case CODEC_ID_PCM_S16LE:
 385                                 case CODEC_ID_PCM_S16BE:
 386                                 case CODEC_ID_PCM_U16LE:
 387                                 case CODEC_ID_PCM_U16BE:
 388                                         audio_input_frame_size >>= 1;
 389                                         break;
 390                                 default:
 391                                         break;
 392                         }
 393                 }
 394                 else
 395                 {
 396                         audio_input_frame_size = c->frame_size;
 397                 }
 398
 399                 // Some formats want stream headers to be seperate (hmm)
 400                 if( !strcmp( oc->oformat->name, "mp4" ) ||
 401                         !strcmp( oc->oformat->name, "mov" ) ||
 402                         !strcmp( oc->oformat->name, "3gp" ) )
 403                         c->flags |= CODEC_FLAG_GLOBAL_HEADER;
 404         }
 405         else
 406         {
 407                 fprintf( stderr, "%s: Unable to encode audio - disabling audio output.\n", __FILE__ );
 408         }
 409
 410         return audio_input_frame_size;
 411 }
 412
 413 static void close_audio( AVFormatContext *oc, AVStream *st )
 414 {
 415         avcodec_close( st->codec );
 416 }
 417
 418 /** Add a video output stream
 419 */
 420
 421 static AVStream *add_video_stream( mlt_consumer this, AVFormatContext *oc, int codec_id )
 422 {
 423         // Get the properties
 424         mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
 425
 426         // Create a new stream
 427         AVStream *st = av_new_stream( oc, 0 );
 428
 429         if ( st != NULL )
 430         {
 431                 char *pix_fmt = mlt_properties_get( properties, "pix_fmt" );
 432                 double ar = mlt_properties_get_double( properties, "aspect_ratio" );
 433                 AVCodecContext *c = st->codec;
 434
 435                 // Establish defaults from AVOptions
 436                 avcodec_get_context_defaults2( c, CODEC_TYPE_VIDEO );
 437
 438                 c->codec_id = codec_id;
 439                 c->codec_type = CODEC_TYPE_VIDEO;
 440
 441                 // Setup multi-threading
 442                 int thread_count = mlt_properties_get_int( properties, "threads" );
 443                 if ( thread_count == 0 && getenv( "MLT_AVFORMAT_THREADS" ) )
 444                         thread_count = atoi( getenv( "MLT_AVFORMAT_THREADS" ) );
 445                 if ( thread_count > 1 )
 446                         avcodec_thread_init( c, thread_count );
 447
 448                 // Process properties as AVOptions
 449                 apply_properties( c, properties, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM );
 450
 451                 // Set options controlled by MLT
 452                 c->width = mlt_properties_get_int( properties, "width" );
 453                 c->height = mlt_properties_get_int( properties, "height" );
 454                 c->time_base.num = mlt_properties_get_int( properties, "frame_rate_den" );
 455                 c->time_base.den = mlt_properties_get_int( properties, "frame_rate_num" );
 456                 c->pix_fmt = pix_fmt ? avcodec_get_pix_fmt( pix_fmt ) : PIX_FMT_YUV420P;
 457
 458                 if ( codec_id == CODEC_ID_DVVIDEO )
 459                 {
 460                         // Compensate for FFmpeg's notion of DV aspect ratios, which are
 461                         // based upon a width of 704. Since we do not have a normaliser
 462                         // that crops (nor is cropping 720 wide ITU-R 601 video always desirable)
 463                         // we just coerce the values to facilitate a passive behaviour through
 464                         // the rescale normaliser when using equivalent producers and consumers.
 465                         // = display_aspect / (width * height)
 466                         if ( ar == 8.0/9.0 )  // 4:3 NTSC
 467                         {
 468                                 c->sample_aspect_ratio.num = 10;
 469                                 c->sample_aspect_ratio.den = 11;
 470                         }
 471                         else if ( ar == 16.0/15.0 ) // 4:3 PAL
 472                         {
 473                                 c->sample_aspect_ratio.num = 159;
 474                                 c->sample_aspect_ratio.den = 54;
 475                         }
 476                         else if ( ar == 32.0/27.0 ) // 16:9 NTSC
 477                         {
 478                                 c->sample_aspect_ratio.num = 40;
 479                                 c->sample_aspect_ratio.den = 33;
 480                         }
 481                         else // 16:9 PAL
 482                         {
 483                                 c->sample_aspect_ratio.num = 118;
 484                                 c->sample_aspect_ratio.den = 81;
 485                         }
 486                 }
 487                 else
 488                 {
 489                         c->sample_aspect_ratio = av_d2q( ar * c->height / c->width , 255);
 490                 }
 491
 492                 if ( mlt_properties_get_double( properties, "qscale" ) > 0 )
 493                 {
 494                         c->flags |= CODEC_FLAG_QSCALE;
 495                         st->quality = FF_QP2LAMBDA * mlt_properties_get_double( properties, "qscale" );
 496                 }
 497
 498                 // Allow the user to override the video fourcc
 499                 if ( mlt_properties_get( properties, "vtag" ) )
 500                 {
 501                         char *tail = NULL;
 502                         const char *arg = mlt_properties_get( properties, "vtag" );
 503                         int tag = strtol( arg, &tail, 0);
 504                         if( !tail || *tail )
 505                                 tag = arg[ 0 ] + ( arg[ 1 ] << 8 ) + ( arg[ 2 ] << 16 ) + ( arg[ 3 ] << 24 );
 506                         c->codec_tag = tag;
 507                 }
 508
 509                 // Some formats want stream headers to be seperate
 510                 if ( oc->oformat->flags & AVFMT_GLOBALHEADER )
 511                         c->flags |= CODEC_FLAG_GLOBAL_HEADER;
 512
 513                 // Translate these standard mlt consumer properties to ffmpeg
 514                 if ( mlt_properties_get_int( properties, "progressive" ) == 0 &&
 515                      mlt_properties_get_int( properties, "deinterlace" ) == 0 )
 516                 {
 517                         if ( mlt_properties_get_int( properties, "ildct" ) )
 518                                 c->flags |= CODEC_FLAG_INTERLACED_DCT;
 519                         if ( mlt_properties_get_int( properties, "ilme" ) )
 520                                 c->flags |= CODEC_FLAG_INTERLACED_ME;
 521                 }
 522
 523                 // parse the ratecontrol override string
 524                 int i;
 525                 char *rc_override = mlt_properties_get( properties, "rc_override" );
 526                 for ( i = 0; rc_override; i++ )
 527                 {
 528                         int start, end, q;
 529                         int e = sscanf( rc_override, "%d,%d,%d", &start, &end, &q );
 530                         if ( e != 3 )
 531                                 fprintf( stderr, "%s: Error parsing rc_override\n", __FILE__ );
 532                         c->rc_override = av_realloc( c->rc_override, sizeof( RcOverride ) * ( i + 1 ) );
 533                         c->rc_override[i].start_frame = start;
 534                         c->rc_override[i].end_frame = end;
 535                         if ( q > 0 )
 536                         {
 537                                 c->rc_override[i].qscale = q;
 538                                 c->rc_override[i].quality_factor = 1.0;
 539                         }
 540                         else
 541                         {
 542                                 c->rc_override[i].qscale = 0;
 543                                 c->rc_override[i].quality_factor = -q / 100.0;
 544                         }
 545                         rc_override = strchr( rc_override, '/' );
 546                         if ( rc_override )
 547                                 rc_override++;
 548                 }
 549                 c->rc_override_count = i;
 550                 if ( !c->rc_initial_buffer_occupancy )
 551                         c->rc_initial_buffer_occupancy = c->rc_buffer_size * 3/4;
 552                 c->intra_dc_precision = mlt_properties_get_int( properties, "dc" ) - 8;
 553
 554                 // Setup dual-pass
 555                 i = mlt_properties_get_int( properties, "pass" );
 556                 if ( i == 1 )
 557                         c->flags |= CODEC_FLAG_PASS1;
 558                 else if ( i == 2 )
 559                         c->flags |= CODEC_FLAG_PASS2;
 560                 if ( c->flags & ( CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2 ) )
 561                 {
 562                         char logfilename[1024];
 563                         FILE *f;
 564                         int size;
 565                         char *logbuffer;
 566
 567                         snprintf( logfilename, sizeof(logfilename), "%s_2pass.log",
 568                                 mlt_properties_get( properties, "passlogfile" ) ? mlt_properties_get( properties, "passlogfile" ) : mlt_properties_get( properties, "target" ) );
 569                         if ( c->flags & CODEC_FLAG_PASS1 )
 570                         {
 571                                 f = fopen( logfilename, "w" );
 572                                 if ( !f )
 573                                         perror( logfilename );
 574                                 else
 575                                         mlt_properties_set_data( properties, "_logfile", f, 0, ( mlt_destructor )fclose, NULL );
 576                         }
 577                         else
 578                         {
 579                                 /* read the log file */
 580                                 f = fopen( logfilename, "r" );
 581                                 if ( !f )
 582                                 {
 583                                         perror(logfilename);
 584                                 }
 585                                 else
 586                                 {
 587                                         fseek( f, 0, SEEK_END );
 588                                         size = ftell( f );
 589                                         fseek( f, 0, SEEK_SET );
 590                                         logbuffer = av_malloc( size + 1 );
 591                                         if ( !logbuffer )
 592                                                 fprintf( stderr, "%s: Could not allocate log buffer\n", __FILE__ );
 593                                         else
 594                                         {
 595                                                 size = fread( logbuffer, 1, size, f );
 596                                                 fclose( f );
 597                                                 logbuffer[size] = '\0';
 598                                                 c->stats_in = logbuffer;
 599                                                 mlt_properties_set_data( properties, "_logbuffer", logbuffer, 0, ( mlt_destructor )av_free, NULL );
 600                                         }
 601                                 }
 602                         }
 603                 }
 604         }
 605         else
 606         {
 607                 fprintf( stderr, "%s: Could not allocate a stream for video\n", __FILE__ );
 608         }
 609
 610         return st;
 611 }
 612
 613 static AVFrame *alloc_picture( int pix_fmt, int width, int height )
 614 {
 615         // Allocate a frame
 616         AVFrame *picture = avcodec_alloc_frame();
 617
 618         // Determine size of the
 619         int size = avpicture_get_size(pix_fmt, width, height);
 620
 621         // Allocate the picture buf
 622         uint8_t *picture_buf = av_malloc(size);
 623
 624         // If we have both, then fill the image
 625         if ( picture != NULL && picture_buf != NULL )
 626         {
 627                 // Fill the frame with the allocated buffer
 628                 avpicture_fill( (AVPicture *)picture, picture_buf, pix_fmt, width, height);
 629         }
 630         else
 631         {
 632                 // Something failed - clean up what we can
 633                 av_free( picture );
 634                 av_free( picture_buf );
 635                 picture = NULL;
 636         }
 637
 638         return picture;
 639 }
 640
 641 static int open_video(AVFormatContext *oc, AVStream *st)
 642 {
 643         // Get the codec
 644         AVCodecContext *video_enc = st->codec;
 645
 646         // find the video encoder
 647         AVCodec *codec = avcodec_find_encoder( video_enc->codec_id );
 648
 649         if( codec && codec->pix_fmts )
 650         {
 651                 const enum PixelFormat *p = codec->pix_fmts;
 652                 for( ; *p!=-1; p++ )
 653                 {
 654                         if( *p == video_enc->pix_fmt )
 655                                 break;
 656                 }
 657                 if( *p == -1 )
 658                         video_enc->pix_fmt = codec->pix_fmts[ 0 ];
 659         }
 660
 661         // Open the codec safely
 662         return codec != NULL && avcodec_open( video_enc, codec ) >= 0;
 663 }
 664
 665 void close_video(AVFormatContext *oc, AVStream *st)
 666 {
 667         avcodec_close(st->codec);
 668 }
 669
 670 static inline long time_difference( struct timeval *time1 )
 671 {
 672         struct timeval time2;
 673         gettimeofday( &time2, NULL );
 674         return time2.tv_sec * 1000000 + time2.tv_usec - time1->tv_sec * 1000000 - time1->tv_usec;
 675 }
 676
 677 /** The main thread - the argument is simply the consumer.
 678 */
 679
 680 static void *consumer_thread( void *arg )
 681 {
 682         // Map the argument to the object
 683         mlt_consumer this = arg;
 684
 685         // Get the properties
 686         mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
 687
 688         // Get the terminate on pause property
 689         int terminate_on_pause = mlt_properties_get_int( properties, "terminate_on_pause" );
 690         int terminated = 0;
 691
 692         // Determine if feed is slow (for realtime stuff)
 693         int real_time_output = mlt_properties_get_int( properties, "real_time" );
 694
 695         // Time structures
 696         struct timeval ante;
 697
 698         // Get the frame rate
 699         double fps = mlt_properties_get_double( properties, "fps" );
 700
 701         // Get width and height
 702         int width = mlt_properties_get_int( properties, "width" );
 703         int height = mlt_properties_get_int( properties, "height" );
 704         int img_width = width;
 705         int img_height = height;
 706
 707         // Get default audio properties
 708         mlt_audio_format aud_fmt = mlt_audio_pcm;
 709         int channels = mlt_properties_get_int( properties, "channels" );
 710         int frequency = mlt_properties_get_int( properties, "frequency" );
 711         int16_t *pcm = NULL;
 712         int samples = 0;
 713
 714         // AVFormat audio buffer and frame size
 715         int audio_outbuf_size = 10000;
 716         uint8_t *audio_outbuf = av_malloc( audio_outbuf_size );
 717         int audio_input_frame_size = 0;
 718
 719         // AVFormat video buffer and frame count
 720         int frame_count = 0;
 721         int video_outbuf_size = ( 1024 * 1024 );
 722         uint8_t *video_outbuf = av_malloc( video_outbuf_size );
 723
 724         // Used for the frame properties
 725         mlt_frame frame = NULL;
 726         mlt_properties frame_properties = NULL;
 727
 728         // Get the queues
 729         mlt_deque queue = mlt_properties_get_data( properties, "frame_queue", NULL );
 730         sample_fifo fifo = mlt_properties_get_data( properties, "sample_fifo", NULL );
 731
 732         // Need two av pictures for converting
 733         AVFrame *output = NULL;
 734         AVFrame *input = alloc_picture( PIX_FMT_YUV422, width, height );
 735
 736         // For receiving images from an mlt_frame
 737         uint8_t *image;
 738         mlt_image_format img_fmt = mlt_image_yuv422;
 739
 740         // For receiving audio samples back from the fifo
 741         int16_t *buffer = av_malloc( 48000 * 2 );
 742         int count = 0;
 743
 744         // Allocate the context
 745         AVFormatContext *oc = av_alloc_format_context( );
 746
 747         // Streams
 748         AVStream *audio_st = NULL;
 749         AVStream *video_st = NULL;
 750
 751         // Time stamps
 752         double audio_pts = 0;
 753         double video_pts = 0;
 754
 755         // Loop variable
 756         int i;
 757
 758         // Frames despatched
 759         long int frames = 0;
 760         long int total_time = 0;
 761
 762         // Determine the format
 763         AVOutputFormat *fmt = NULL;
 764         char *filename = mlt_properties_get( properties, "target" );
 765         char *format = mlt_properties_get( properties, "f" );
 766         char *vcodec = mlt_properties_get( properties, "vcodec" );
 767         char *acodec = mlt_properties_get( properties, "acodec" );
 768
 769         // Used to store and override codec ids
 770         int audio_codec_id;
 771         int video_codec_id;
 772
 773         // Check for user selected format first
 774         if ( format != NULL )
 775                 fmt = guess_format( format, NULL, NULL );
 776
 777         // Otherwise check on the filename
 778         if ( fmt == NULL && filename != NULL )
 779                 fmt = guess_format( NULL, filename, NULL );
 780
 781         // Otherwise default to mpeg
 782         if ( fmt == NULL )
 783                 fmt = guess_format( "mpeg", NULL, NULL );
 784
 785         // We need a filename - default to stdout?
 786         if ( filename == NULL || !strcmp( filename, "" ) )
 787                 filename = "pipe:";
 788
 789         // Get the codec ids selected
 790         audio_codec_id = fmt->audio_codec;
 791         video_codec_id = fmt->video_codec;
 792
 793         // Check for audio codec overides
 794         if ( acodec != NULL )
 795         {
 796                 AVCodec *p = first_avcodec;
 797                 while( p != NULL )
 798                 {
 799                         if ( !strcmp( p->name, acodec ) && p->type == CODEC_TYPE_AUDIO )
 800                                 break;
 801                         p = p->next;
 802                 }
 803                 if ( p != NULL )
 804                         audio_codec_id = p->id;
 805                 else
 806                         fprintf( stderr, "%s: audio codec %s unrecognised - ignoring\n", __FILE__, acodec );
 807         }
 808
 809         // Check for video codec overides
 810         if ( vcodec != NULL )
 811         {
 812                 AVCodec *p = first_avcodec;
 813                 while( p != NULL )
 814                 {
 815                         if ( !strcmp( p->name, vcodec ) && p->type == CODEC_TYPE_VIDEO )
 816                                 break;
 817                         p = p->next;
 818                 }
 819                 if ( p != NULL )
 820                         video_codec_id = p->id;
 821                 else
 822                         fprintf( stderr, "%s: video codec %s unrecognised - ignoring\n", __FILE__, vcodec );
 823         }
 824
 825         // Write metadata
 826         char *tmp = NULL;
 827         int metavalue;
 828
 829         tmp = mlt_properties_get( properties, "meta.attr.title.markup");
 830         if (tmp != NULL) snprintf( oc->title, sizeof(oc->title), "%s", tmp );
 831
 832         tmp = mlt_properties_get( properties, "meta.attr.comment.markup");
 833         if (tmp != NULL) snprintf( oc->comment, sizeof(oc->comment), "%s", tmp );
 834
 835         tmp = mlt_properties_get( properties, "meta.attr.author.markup");
 836         if (tmp != NULL) snprintf( oc->author, sizeof(oc->author), "%s", tmp );
 837
 838         tmp = mlt_properties_get( properties, "meta.attr.copyright.markup");
 839         if (tmp != NULL) snprintf( oc->copyright, sizeof(oc->copyright), "%s", tmp );
 840
 841         tmp = mlt_properties_get( properties, "meta.attr.album.markup");
 842         if (tmp != NULL) snprintf( oc->album, sizeof(oc->album), "%s", tmp );
 843
 844         metavalue = mlt_properties_get_int( properties, "meta.attr.year.markup");
 845         if (metavalue != 0) oc->year = metavalue;
 846
 847         metavalue = mlt_properties_get_int( properties, "meta.attr.track.markup");
 848         if (metavalue != 0) oc->track = metavalue;
 849
 850         oc->oformat = fmt;
 851         snprintf( oc->filename, sizeof(oc->filename), "%s", filename );
 852
 853         // Add audio and video streams
 854         if ( fmt->video_codec != CODEC_ID_NONE )
 855                 video_st = add_video_stream( this, oc, video_codec_id );
 856         if ( fmt->audio_codec != CODEC_ID_NONE )
 857                 audio_st = add_audio_stream( this, oc, audio_codec_id );
 858
 859         // Set the parameters (even though we have none...)
 860         if ( av_set_parameters(oc, NULL) >= 0 )
 861         {
 862                 oc->preload = ( int )( mlt_properties_get_double( properties, "muxpreload" ) * AV_TIME_BASE );
 863                 oc->max_delay= ( int )( mlt_properties_get_double( properties, "muxdelay" ) * AV_TIME_BASE );
 864
 865                 // Process properties as AVOptions
 866                 apply_properties( oc, properties, AV_OPT_FLAG_ENCODING_PARAM );
 867
 868                 if ( video_st && !open_video( oc, video_st ) )
 869                         video_st = NULL;
 870                 if ( audio_st )
 871                         audio_input_frame_size = open_audio( oc, audio_st, audio_outbuf_size );
 872
 873                 // Open the output file, if needed
 874                 if ( !( fmt->flags & AVFMT_NOFILE ) )
 875                 {
 876                         if ( url_fopen( &oc->pb, filename, URL_WRONLY ) < 0 )
 877                         {
 878                                 fprintf( stderr, "%s: Could not open '%s'\n", __FILE__, filename );
 879                                 mlt_properties_set_int( properties, "running", 0 );
 880                         }
 881                 }
 882
 883                 // Write the stream header, if any
 884                 if ( mlt_properties_get_int( properties, "running" ) )
 885                         av_write_header( oc );
 886         }
 887         else
 888         {
 889                 fprintf( stderr, "%s: Invalid output format parameters\n", __FILE__ );
 890                 mlt_properties_set_int( properties, "running", 0 );
 891         }
 892
 893         // Allocate picture
 894         if ( video_st )
 895                 output = alloc_picture( video_st->codec->pix_fmt, width, height );
 896
 897         // Last check - need at least one stream
 898         if ( audio_st == NULL && video_st == NULL )
 899                 mlt_properties_set_int( properties, "running", 0 );
 900
 901         // Get the starting time (can ignore the times above)
 902         gettimeofday( &ante, NULL );
 903
 904         // Loop while running
 905         while( mlt_properties_get_int( properties, "running" ) && !terminated )
 906         {
 907                 // Get the frame
 908                 frame = mlt_consumer_rt_frame( this );
 909
 910                 // Check that we have a frame to work with
 911                 if ( frame != NULL )
 912                 {
 913                         // Increment frames despatched
 914                         frames ++;
 915
 916                         // Default audio args
 917                         frame_properties = MLT_FRAME_PROPERTIES( frame );
 918
 919                         // Check for the terminated condition
 920                         terminated = terminate_on_pause && mlt_properties_get_double( frame_properties, "_speed" ) == 0.0;
 921
 922                         // Get audio and append to the fifo
 923                         if ( !terminated && audio_st )
 924                         {
 925                                 samples = mlt_sample_calculator( fps, frequency, count ++ );
 926                                 mlt_frame_get_audio( frame, &pcm, &aud_fmt, &frequency, &channels, &samples );
 927
 928                                 // Create the fifo if we don't have one
 929                                 if ( fifo == NULL )
 930                                 {
 931                                         fifo = sample_fifo_init( frequency, channels );
 932                                         mlt_properties_set_data( properties, "sample_fifo", fifo, 0, ( mlt_destructor )sample_fifo_close, NULL );
 933                                 }
 934
 935                                 if ( mlt_properties_get_double( frame_properties, "_speed" ) != 1.0 )
 936                                         memset( pcm, 0, samples * channels * 2 );
 937
 938                                 // Append the samples
 939                                 sample_fifo_append( fifo, pcm, samples * channels );
 940                                 total_time += ( samples * 1000000 ) / frequency;
 941                         }
 942
 943                         // Encode the image
 944                         if ( !terminated && video_st )
 945                                 mlt_deque_push_back( queue, frame );
 946                         else
 947                                 mlt_frame_close( frame );
 948                 }
 949
 950                 // While we have stuff to process, process...
 951                 while ( 1 )
 952                 {
 953                         if (audio_st)
 954                                 audio_pts = (double)audio_st->pts.val * audio_st->time_base.num / audio_st->time_base.den;
 955                         else
 956                                 audio_pts = 0.0;
 957
 958                         if (video_st)
 959                                 video_pts = (double)video_st->pts.val * video_st->time_base.num / video_st->time_base.den;
 960                         else
 961                                 video_pts = 0.0;
 962
 963                         // Write interleaved audio and video frames
 964                         if ( !video_st || ( video_st && audio_st && audio_pts < video_pts ) )
 965                         {
 966                                 if ( channels * audio_input_frame_size < sample_fifo_used( fifo ) )
 967                                 {
 968                                         AVCodecContext *c;
 969                                         AVPacket pkt;
 970                                         av_init_packet( &pkt );
 971
 972                                         c = audio_st->codec;
 973
 974                                         sample_fifo_fetch( fifo, buffer, channels * audio_input_frame_size );
 975
 976                                         pkt.size = avcodec_encode_audio( c, audio_outbuf, audio_outbuf_size, buffer );
 977                                         // Write the compressed frame in the media file
 978                                         if ( c->coded_frame && c->coded_frame->pts != AV_NOPTS_VALUE )
 979                                                 pkt.pts = av_rescale_q( c->coded_frame->pts, c->time_base, audio_st->time_base );
 980                                         pkt.flags |= PKT_FLAG_KEY;
 981                                         pkt.stream_index= audio_st->index;
 982                                         pkt.data= audio_outbuf;
 983
 984                                         if ( pkt.size )
 985                                                 if ( av_interleaved_write_frame( oc, &pkt ) != 0)
 986                                                         fprintf( stderr, "%s: Error while writing audio frame\n", __FILE__ );
 987
 988                                         audio_pts += c->frame_size;
 989                                 }
 990                                 else
 991                                 {
 992                                         break;
 993                                 }
 994                         }
 995                         else if ( video_st )
 996                         {
 997                                 if ( mlt_deque_count( queue ) )
 998                                 {
 999                                         int out_size, ret;
1000                                         AVCodecContext *c;
1001
1002                                         frame = mlt_deque_pop_front( queue );
1003                                         frame_properties = MLT_FRAME_PROPERTIES( frame );
1004
1005                                         c = video_st->codec;
1006
1007                                         if ( mlt_properties_get_int( frame_properties, "rendered" ) )
1008                                         {
1009                                                 int i = 0;
1010                                                 int j = 0;
1011                                                 uint8_t *p;
1012                                                 uint8_t *q;
1013
1014                                                 mlt_events_fire( properties, "consumer-frame-show", frame, NULL );
1015
1016                                                 mlt_frame_get_image( frame, &image, &img_fmt, &img_width, &img_height, 0 );
1017
1018                                                 q = image;
1019
1020                                                 // Convert the mlt frame to an AVPicture
1021                                                 for ( i = 0; i < height; i ++ )
1022                                                 {
1023                                                         p = input->data[ 0 ] + i * input->linesize[ 0 ];
1024                                                         j = width;
1025                                                         while( j -- )
1026                                                         {
1027                                                                 *p ++ = *q ++;
1028                                                                 *p ++ = *q ++;
1029                                                         }
1030                                                 }
1031
1032                                                 // Do the colour space conversion
1033 #ifdef SWSCALE
1034                                                 struct SwsContext *context = sws_getContext( width, height, PIX_FMT_YUV422,
1035                                                         width, height, video_st->codec->pix_fmt, SWS_FAST_BILINEAR, NULL, NULL, NULL);
1036                                                 sws_scale( context, input->data, input->linesize, 0, height,
1037                                                         output->data, output->linesize);
1038                                                 sws_freeContext( context );
1039 #else
1040                                                 img_convert( ( AVPicture * )output, video_st->codec->pix_fmt, ( AVPicture * )input, PIX_FMT_YUV422, width, height );
1041 #endif
1042
1043                                                 // Apply the alpha if applicable
1044                                                 if ( video_st->codec->pix_fmt == PIX_FMT_RGBA32 )
1045                                                 {
1046                                                         uint8_t *alpha = mlt_frame_get_alpha_mask( frame );
1047                                                         register int n;
1048
1049                                                         for ( i = 0; i < height; i ++ )
1050                                                         {
1051                                                                 n = ( width + 7 ) / 8;
1052                                                                 p = output->data[ 0 ] + i * output->linesize[ 0 ];
1053
1054                                                                 #ifndef __DARWIN__
1055                                                                 p += 3;
1056                                                                 #endif
1057
1058                                                                 switch( width % 8 )
1059                                                                 {
1060                                                                         case 0: do { *p = *alpha++; p += 4;
1061                                                                         case 7:          *p = *alpha++; p += 4;
1062                                                                         case 6:          *p = *alpha++; p += 4;
1063                                                                         case 5:          *p = *alpha++; p += 4;
1064                                                                         case 4:          *p = *alpha++; p += 4;
1065                                                                         case 3:          *p = *alpha++; p += 4;
1066                                                                         case 2:          *p = *alpha++; p += 4;
1067                                                                         case 1:          *p = *alpha++; p += 4;
1068                                                                                         }
1069                                                                                         while( --n );
1070                                                                 }
1071                                                         }
1072                                                 }
1073                                         }
1074
1075                                         if (oc->oformat->flags & AVFMT_RAWPICTURE)
1076                                         {
1077                                                 // raw video case. The API will change slightly in the near future for that
1078                                                 AVPacket pkt;
1079                                                 av_init_packet(&pkt);
1080
1081                                                 pkt.flags |= PKT_FLAG_KEY;
1082                                                 pkt.stream_index= video_st->index;
1083                                                 pkt.data= (uint8_t *)output;
1084                                                 pkt.size= sizeof(AVPicture);
1085
1086                                                 ret = av_write_frame(oc, &pkt);
1087                                                 video_pts += c->frame_size;
1088                                         }
1089                                         else
1090                                         {
1091                                                 // Set the quality
1092                                                 output->quality = video_st->quality;
1093
1094                                                 // Set frame interlace hints
1095                                                 output->interlaced_frame = !mlt_properties_get_int( frame_properties, "progressive" );
1096                                                 output->top_field_first = mlt_properties_get_int( frame_properties, "top_field_first" );
1097
1098                                                 // Encode the image
1099                                                 out_size = avcodec_encode_video(c, video_outbuf, video_outbuf_size, output );
1100
1101                                                 // If zero size, it means the image was buffered
1102                                                 if (out_size > 0)
1103                                                 {
1104                                                         AVPacket pkt;
1105                                                         av_init_packet( &pkt );
1106
1107                                                         if ( c->coded_frame && c->coded_frame->pts != AV_NOPTS_VALUE )
1108                                                                 pkt.pts= av_rescale_q( c->coded_frame->pts, c->time_base, video_st->time_base );
1109                                                         if( c->coded_frame && c->coded_frame->key_frame )
1110                                                                 pkt.flags |= PKT_FLAG_KEY;
1111                                                         pkt.stream_index= video_st->index;
1112                                                         pkt.data= video_outbuf;
1113                                                         pkt.size= out_size;
1114
1115                                                         // write the compressed frame in the media file
1116                                                         ret = av_interleaved_write_frame(oc, &pkt);
1117                                                         video_pts += c->frame_size;
1118
1119                                                         // Dual pass logging
1120                                                         if ( mlt_properties_get_data( properties, "_logfile", NULL ) && c->stats_out)
1121                                                                 fprintf( mlt_properties_get_data( properties, "_logfile", NULL ), "%s", c->stats_out );
1122                                                 }
1123                                                 else
1124                                                 {
1125                                                         fprintf( stderr, "%s: error with video encode\n", __FILE__ );
1126                                                 }
1127                                         }
1128                                         frame_count++;
1129                                         mlt_frame_close( frame );
1130                                 }
1131                                 else
1132                                 {
1133                                         break;
1134                                 }
1135                         }
1136                 }
1137
1138                 if ( real_time_output == 1 && frames % 12 == 0 )
1139                 {
1140                         long passed = time_difference( &ante );
1141                         if ( fifo != NULL )
1142                         {
1143                                 long pending = ( ( ( long )sample_fifo_used( fifo ) * 1000 ) / frequency ) * 1000;
1144                                 passed -= pending;
1145                         }
1146                         if ( passed < total_time )
1147                         {
1148                                 long total = ( total_time - passed );
1149                                 struct timespec t = { total / 1000000, ( total % 1000000 ) * 1000 };
1150                                 nanosleep( &t, NULL );
1151                         }
1152                 }
1153         }
1154
1155 #ifdef FLUSH
1156         if ( ! real_time_output )
1157         {
1158                 // Flush audio fifo
1159                 if ( audio_st && audio_st->codec->frame_size > 1 ) for (;;)
1160                 {
1161                         AVCodecContext *c = audio_st->codec;
1162                         AVPacket pkt;
1163                         av_init_packet( &pkt );
1164                         pkt.size = 0;
1165
1166                         if ( /*( c->capabilities & CODEC_CAP_SMALL_LAST_FRAME ) &&*/
1167                                 ( channels * audio_input_frame_size < sample_fifo_used( fifo ) ) )
1168                         {
1169                                 sample_fifo_fetch( fifo, buffer, channels * audio_input_frame_size );
1170                                 pkt.size = avcodec_encode_audio( c, audio_outbuf, audio_outbuf_size, buffer );
1171                         }
1172                         if ( pkt.size <= 0 )
1173                                 pkt.size = avcodec_encode_audio( c, audio_outbuf, audio_outbuf_size, NULL );
1174                         if ( pkt.size <= 0 )
1175                                 break;
1176
1177                         // Write the compressed frame in the media file
1178                         if ( c->coded_frame && c->coded_frame->pts != AV_NOPTS_VALUE )
1179                                 pkt.pts = av_rescale_q( c->coded_frame->pts, c->time_base, audio_st->time_base );
1180                         pkt.flags |= PKT_FLAG_KEY;
1181                         pkt.stream_index = audio_st->index;
1182                         pkt.data = audio_outbuf;
1183                         if ( av_interleaved_write_frame( oc, &pkt ) != 0 )
1184                         {
1185                                 fprintf( stderr, "%s: Error while writing flushed audio frame\n", __FILE__ );
1186                                 break;
1187                         }
1188                 }
1189
1190                 // Flush video
1191                 if ( video_st && !( oc->oformat->flags & AVFMT_RAWPICTURE ) ) for (;;)
1192                 {
1193                         AVCodecContext *c = video_st->codec;
1194                         AVPacket pkt;
1195                         av_init_packet( &pkt );
1196
1197                         // Encode the image
1198                         pkt.size = avcodec_encode_video( c, video_outbuf, video_outbuf_size, NULL );
1199                         if ( pkt.size <= 0 )
1200                                 break;
1201
1202                         if ( c->coded_frame && c->coded_frame->pts != AV_NOPTS_VALUE )
1203                                 pkt.pts= av_rescale_q( c->coded_frame->pts, c->time_base, video_st->time_base );
1204                         if( c->coded_frame && c->coded_frame->key_frame )
1205                                 pkt.flags |= PKT_FLAG_KEY;
1206                         pkt.stream_index = video_st->index;
1207                         pkt.data = video_outbuf;
1208
1209                         // write the compressed frame in the media file
1210                         if ( av_interleaved_write_frame( oc, &pkt ) != 0 )
1211                         {
1212                                 fprintf( stderr, "%s: Error while writing flushed video frame\n". __FILE__ );
1213                                 break;
1214                         }
1215                 }
1216         }
1217 #endif
1218
1219         // close each codec
1220         if (video_st)
1221                 close_video(oc, video_st);
1222         if (audio_st)
1223                 close_audio(oc, audio_st);
1224
1225         // Write the trailer, if any
1226         av_write_trailer(oc);
1227
1228         // Free the streams
1229         for(i = 0; i < oc->nb_streams; i++)
1230                 av_freep(&oc->streams[i]);
1231
1232         // Close the output file
1233         if (!(fmt->flags & AVFMT_NOFILE))
1234 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(0<<8)+0)
1235                 url_fclose(oc->pb);
1236 #else
1237                 url_fclose(&oc->pb);
1238 #endif
1239
1240         // Clean up input and output frames
1241         if ( output )
1242                 av_free( output->data[0] );
1243         av_free( output );
1244         av_free( input->data[0] );
1245         av_free( input );
1246         av_free( video_outbuf );
1247         av_free( buffer );
1248
1249         // Free the stream
1250         av_free(oc);
1251
1252         // Just in case we terminated on pause
1253         mlt_properties_set_int( properties, "running", 0 );
1254
1255         mlt_consumer_stopped( this );
1256
1257         return NULL;
1258 }
1259
1260 /** Close the consumer.
1261 */
1262
1263 static void consumer_close( mlt_consumer this )
1264 {
1265         // Stop the consumer
1266         mlt_consumer_stop( this );
1267
1268         // Close the parent
1269         mlt_consumer_close( this );
1270
1271         // Free the memory
1272         free( this );
1273 }