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 #include <libavformat/avio.h>
  41 #ifdef SWSCALE
  42 #include <libswscale/swscale.h>
  43 #endif
  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 #if LIBAVCODEC_VERSION_MAJOR >= 53
  54 #include <libavutil/opt.h>
  55 #define CODEC_TYPE_VIDEO      AVMEDIA_TYPE_VIDEO
  56 #define CODEC_TYPE_AUDIO      AVMEDIA_TYPE_AUDIO
  57 #define PKT_FLAG_KEY AV_PKT_FLAG_KEY
  58 #else
  59 #include <libavcodec/opt.h>
  60 #endif
  61
  62 #define MAX_AUDIO_STREAMS (8)
  63 #define AUDIO_ENCODE_BUFFER_SIZE (48000 * 2 * MAX_AUDIO_STREAMS)
  64 #define AUDIO_BUFFER_SIZE (1024 * 42)
  65 #define VIDEO_BUFFER_SIZE (2048 * 1024)
  66
  67 void avformat_lock( );
  68 void avformat_unlock( );
  69
  70 //
  71 // This structure should be extended and made globally available in mlt
  72 //
  73
  74 typedef struct
  75 {
  76         int16_t *buffer;
  77         int size;
  78         int used;
  79         double time;
  80         int frequency;
  81         int channels;
  82 }
  83 *sample_fifo, sample_fifo_s;
  84
  85 sample_fifo sample_fifo_init( int frequency, int channels )
  86 {
  87         sample_fifo fifo = calloc( 1, sizeof( sample_fifo_s ) );
  88         fifo->frequency = frequency;
  89         fifo->channels = channels;
  90         return fifo;
  91 }
  92
  93 // sample_fifo_clear and check are temporarily aborted (not working as intended)
  94
  95 void sample_fifo_clear( sample_fifo fifo, double time )
  96 {
  97         int words = ( float )( time - fifo->time ) * fifo->frequency * fifo->channels;
  98         if ( ( int )( ( float )time * 100 ) < ( int )( ( float )fifo->time * 100 ) && fifo->used > words && words > 0 )
  99         {
 100                 memmove( fifo->buffer, &fifo->buffer[ words ], ( fifo->used - words ) * sizeof( int16_t ) );
 101                 fifo->used -= words;
 102                 fifo->time = time;
 103         }
 104         else if ( ( int )( ( float )time * 100 ) != ( int )( ( float )fifo->time * 100 ) )
 105         {
 106                 fifo->used = 0;
 107                 fifo->time = time;
 108         }
 109 }
 110
 111 void sample_fifo_check( sample_fifo fifo, double time )
 112 {
 113         if ( fifo->used == 0 )
 114         {
 115                 if ( ( int )( ( float )time * 100 ) < ( int )( ( float )fifo->time * 100 ) )
 116                         fifo->time = time;
 117         }
 118 }
 119
 120 void sample_fifo_append( sample_fifo fifo, int16_t *samples, int count )
 121 {
 122         if ( ( fifo->size - fifo->used ) < count )
 123         {
 124                 fifo->size += count * 5;
 125                 fifo->buffer = realloc( fifo->buffer, fifo->size * sizeof( int16_t ) );
 126         }
 127
 128         memcpy( &fifo->buffer[ fifo->used ], samples, count * sizeof( int16_t ) );
 129         fifo->used += count;
 130 }
 131
 132 int sample_fifo_used( sample_fifo fifo )
 133 {
 134         return fifo->used;
 135 }
 136
 137 int sample_fifo_fetch( sample_fifo fifo, int16_t *samples, int count )
 138 {
 139         if ( count > fifo->used )
 140                 count = fifo->used;
 141
 142         memcpy( samples, fifo->buffer, count * sizeof( int16_t ) );
 143         fifo->used -= count;
 144         memmove( fifo->buffer, &fifo->buffer[ count ], fifo->used * sizeof( int16_t ) );
 145
 146         fifo->time += ( double )count / fifo->channels / fifo->frequency;
 147
 148         return count;
 149 }
 150
 151 void sample_fifo_close( sample_fifo fifo )
 152 {
 153         free( fifo->buffer );
 154         free( fifo );
 155 }
 156
 157 // Forward references.
 158 static int consumer_start( mlt_consumer consumer );
 159 static int consumer_stop( mlt_consumer consumer );
 160 static int consumer_is_stopped( mlt_consumer consumer );
 161 static void *consumer_thread( void *arg );
 162 static void consumer_close( mlt_consumer consumer );
 163
 164 /** Initialise the consumer.
 165 */
 166
 167 mlt_consumer consumer_avformat_init( mlt_profile profile, char *arg )
 168 {
 169         // Allocate the consumer
 170         mlt_consumer consumer = mlt_consumer_new( profile );
 171
 172         // If memory allocated and initialises without error
 173         if ( consumer != NULL )
 174         {
 175                 // Get properties from the consumer
 176                 mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 177
 178                 // Assign close callback
 179                 consumer->close = consumer_close;
 180
 181                 // Interpret the argument
 182                 if ( arg != NULL )
 183                         mlt_properties_set( properties, "target", arg );
 184
 185                 // sample and frame queue
 186                 mlt_properties_set_data( properties, "frame_queue", mlt_deque_init( ), 0, ( mlt_destructor )mlt_deque_close, NULL );
 187
 188                 // Audio options not fully handled by AVOptions
 189 #define QSCALE_NONE (-99999)
 190                 mlt_properties_set_int( properties, "aq", QSCALE_NONE );
 191
 192                 // Video options not fully handled by AVOptions
 193                 mlt_properties_set_int( properties, "dc", 8 );
 194
 195                 // Muxer options not fully handled by AVOptions
 196                 mlt_properties_set_double( properties, "muxdelay", 0.7 );
 197                 mlt_properties_set_double( properties, "muxpreload", 0.5 );
 198
 199                 // Ensure termination at end of the stream
 200                 mlt_properties_set_int( properties, "terminate_on_pause", 1 );
 201
 202                 // Default to separate processing threads for producer and consumer with no frame dropping!
 203                 mlt_properties_set_int( properties, "real_time", -1 );
 204                 mlt_properties_set_int( properties, "prefill", 1 );
 205
 206                 // Set up start/stop/terminated callbacks
 207                 consumer->start = consumer_start;
 208                 consumer->stop = consumer_stop;
 209                 consumer->is_stopped = consumer_is_stopped;
 210
 211                 mlt_events_register( properties, "consumer-fatal-error", NULL );
 212         }
 213
 214         // Return consumer
 215         return consumer;
 216 }
 217
 218 /** Start the consumer.
 219 */
 220
 221 static int consumer_start( mlt_consumer consumer )
 222 {
 223         // Get the properties
 224         mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 225         int error = 0;
 226
 227         // Report information about available muxers and codecs as YAML Tiny
 228         char *s = mlt_properties_get( properties, "f" );
 229         if ( s && strcmp( s, "list" ) == 0 )
 230         {
 231                 mlt_properties doc = mlt_properties_new();
 232                 mlt_properties formats = mlt_properties_new();
 233                 char key[20];
 234                 AVOutputFormat *format = NULL;
 235
 236                 mlt_properties_set_data( properties, "f", formats, 0, (mlt_destructor) mlt_properties_close, NULL );
 237                 mlt_properties_set_data( doc, "formats", formats, 0, NULL, NULL );
 238                 while ( ( format = av_oformat_next( format ) ) )
 239                 {
 240                         snprintf( key, sizeof(key), "%d", mlt_properties_count( formats ) );
 241                         mlt_properties_set( formats, key, format->name );
 242                 }
 243                 fprintf( stdout, "%s", mlt_properties_serialise_yaml( doc ) );
 244                 mlt_properties_close( doc );
 245                 error = 1;
 246         }
 247         s = mlt_properties_get( properties, "acodec" );
 248         if ( s && strcmp( s, "list" ) == 0 )
 249         {
 250                 mlt_properties doc = mlt_properties_new();
 251                 mlt_properties codecs = mlt_properties_new();
 252                 char key[20];
 253                 AVCodec *codec = NULL;
 254
 255                 mlt_properties_set_data( properties, "acodec", codecs, 0, (mlt_destructor) mlt_properties_close, NULL );
 256                 mlt_properties_set_data( doc, "audio_codecs", codecs, 0, NULL, NULL );
 257                 while ( ( codec = av_codec_next( codec ) ) )
 258                         if ( codec->encode && codec->type == CODEC_TYPE_AUDIO )
 259                         {
 260                                 snprintf( key, sizeof(key), "%d", mlt_properties_count( codecs ) );
 261                                 mlt_properties_set( codecs, key, codec->name );
 262                         }
 263                 fprintf( stdout, "%s", mlt_properties_serialise_yaml( doc ) );
 264                 mlt_properties_close( doc );
 265                 error = 1;
 266         }
 267         s = mlt_properties_get( properties, "vcodec" );
 268         if ( s && strcmp( s, "list" ) == 0 )
 269         {
 270                 mlt_properties doc = mlt_properties_new();
 271                 mlt_properties codecs = mlt_properties_new();
 272                 char key[20];
 273                 AVCodec *codec = NULL;
 274
 275                 mlt_properties_set_data( properties, "vcodec", codecs, 0, (mlt_destructor) mlt_properties_close, NULL );
 276                 mlt_properties_set_data( doc, "video_codecs", codecs, 0, NULL, NULL );
 277                 while ( ( codec = av_codec_next( codec ) ) )
 278                         if ( codec->encode && codec->type == CODEC_TYPE_VIDEO )
 279                         {
 280                                 snprintf( key, sizeof(key), "%d", mlt_properties_count( codecs ) );
 281                                 mlt_properties_set( codecs, key, codec->name );
 282                         }
 283                 fprintf( stdout, "%s", mlt_properties_serialise_yaml( doc ) );
 284                 mlt_properties_close( doc );
 285                 error = 1;
 286         }
 287
 288         // Check that we're not already running
 289         if ( !error && !mlt_properties_get_int( properties, "running" ) )
 290         {
 291                 // Allocate a thread
 292                 pthread_t *thread = calloc( 1, sizeof( pthread_t ) );
 293
 294                 // Get the width and height
 295                 int width = mlt_properties_get_int( properties, "width" );
 296                 int height = mlt_properties_get_int( properties, "height" );
 297
 298                 // Obtain the size property
 299                 char *size = mlt_properties_get( properties, "s" );
 300
 301                 // Interpret it
 302                 if ( size != NULL )
 303                 {
 304                         int tw, th;
 305                         if ( sscanf( size, "%dx%d", &tw, &th ) == 2 && tw > 0 && th > 0 )
 306                         {
 307                                 width = tw;
 308                                 height = th;
 309                         }
 310                         else
 311                         {
 312                                 mlt_log_warning( MLT_CONSUMER_SERVICE( consumer ), "Invalid size property %s - ignoring.\n", size );
 313                         }
 314                 }
 315
 316                 // Now ensure we honour the multiple of two requested by libavformat
 317                 width = ( width / 2 ) * 2;
 318                 height = ( height / 2 ) * 2;
 319                 mlt_properties_set_int( properties, "width", width );
 320                 mlt_properties_set_int( properties, "height", height );
 321
 322                 // We need to set these on the profile as well because the s property is
 323                 // an alias to mlt properties that correspond to profile settings.
 324                 mlt_profile profile = mlt_service_profile( MLT_CONSUMER_SERVICE( consumer ) );
 325                 if ( profile )
 326                 {
 327                         profile->width = width;
 328                         profile->height = height;
 329                 }
 330
 331                 // Handle the ffmpeg command line "-r" property for frame rate
 332                 if ( mlt_properties_get( properties, "r" ) )
 333                 {
 334                         double frame_rate = mlt_properties_get_double( properties, "r" );
 335                         AVRational rational = av_d2q( frame_rate, 255 );
 336                         mlt_properties_set_int( properties, "frame_rate_num", rational.num );
 337                         mlt_properties_set_int( properties, "frame_rate_den", rational.den );
 338                         if ( profile )
 339                         {
 340                                 profile->frame_rate_num = rational.num;
 341                                 profile->frame_rate_den = rational.den;
 342                                 mlt_properties_set_double( properties, "fps", mlt_profile_fps( profile ) );
 343                         }
 344                 }
 345
 346                 // Apply AVOptions that are synonyms for standard mlt_consumer options
 347                 if ( mlt_properties_get( properties, "ac" ) )
 348                         mlt_properties_set_int( properties, "channels", mlt_properties_get_int( properties, "ac" ) );
 349                 if ( mlt_properties_get( properties, "ar" ) )
 350                         mlt_properties_set_int( properties, "frequency", mlt_properties_get_int( properties, "ar" ) );
 351
 352                 // Assign the thread to properties
 353                 mlt_properties_set_data( properties, "thread", thread, sizeof( pthread_t ), free, NULL );
 354
 355                 // Set the running state
 356                 mlt_properties_set_int( properties, "running", 1 );
 357
 358                 // Create the thread
 359                 pthread_create( thread, NULL, consumer_thread, consumer );
 360         }
 361         return error;
 362 }
 363
 364 /** Stop the consumer.
 365 */
 366
 367 static int consumer_stop( mlt_consumer consumer )
 368 {
 369         // Get the properties
 370         mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 371
 372         // Check that we're running
 373         if ( mlt_properties_get_int( properties, "running" ) )
 374         {
 375                 // Get the thread
 376                 pthread_t *thread = mlt_properties_get_data( properties, "thread", NULL );
 377
 378                 // Stop the thread
 379                 mlt_properties_set_int( properties, "running", 0 );
 380
 381                 // Wait for termination
 382                 pthread_join( *thread, NULL );
 383         }
 384
 385         return 0;
 386 }
 387
 388 /** Determine if the consumer is stopped.
 389 */
 390
 391 static int consumer_is_stopped( mlt_consumer consumer )
 392 {
 393         // Get the properties
 394         mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 395         return !mlt_properties_get_int( properties, "running" );
 396 }
 397
 398 /** Process properties as AVOptions and apply to AV context obj
 399 */
 400
 401 static void apply_properties( void *obj, mlt_properties properties, int flags )
 402 {
 403         int i;
 404         int count = mlt_properties_count( properties );
 405         int alloc = 1;
 406
 407         for ( i = 0; i < count; i++ )
 408         {
 409                 const char *opt_name = mlt_properties_get_name( properties, i );
 410                 const AVOption *opt = av_find_opt( obj, opt_name, NULL, flags, flags );
 411
 412                 // If option not found, see if it was prefixed with a or v (-vb)
 413                 if ( !opt && (
 414                         ( opt_name[0] == 'v' && ( flags & AV_OPT_FLAG_VIDEO_PARAM ) ) ||
 415                         ( opt_name[0] == 'a' && ( flags & AV_OPT_FLAG_AUDIO_PARAM ) ) ) )
 416                         opt = av_find_opt( obj, ++opt_name, NULL, flags, flags );
 417                 // Apply option if found
 418                 if ( opt )
 419 #if LIBAVCODEC_VERSION_INT >= ((52<<16)+(7<<8)+0)
 420                         av_set_string3( obj, opt_name, mlt_properties_get_value( properties, i), alloc, NULL );
 421 #elif LIBAVCODEC_VERSION_INT >= ((51<<16)+(59<<8)+0)
 422                         av_set_string2( obj, opt_name, mlt_properties_get_value( properties, i), alloc );
 423 #else
 424                         av_set_string( obj, opt_name, mlt_properties_get_value( properties, i) );
 425 #endif
 426         }
 427 }
 428
 429 /** Add an audio output stream
 430 */
 431
 432 static AVStream *add_audio_stream( mlt_consumer consumer, AVFormatContext *oc, AVCodec *codec, int channels )
 433 {
 434         // Get the properties
 435         mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 436
 437         // Create a new stream
 438         AVStream *st = av_new_stream( oc, oc->nb_streams );
 439
 440         // If created, then initialise from properties
 441         if ( st != NULL )
 442         {
 443                 AVCodecContext *c = st->codec;
 444
 445                 // Establish defaults from AVOptions
 446 #if LIBAVCODEC_VERSION_MAJOR >= 53
 447                 avcodec_get_context_defaults3( c, codec );
 448 #else
 449                 avcodec_get_context_defaults2( c, CODEC_TYPE_AUDIO );
 450 #endif
 451
 452                 c->codec_id = codec->id;
 453                 c->codec_type = CODEC_TYPE_AUDIO;
 454                 c->sample_fmt = SAMPLE_FMT_S16;
 455
 456 #if 0 // disabled until some audio codecs are multi-threaded
 457                 // Setup multi-threading
 458                 int thread_count = mlt_properties_get_int( properties, "threads" );
 459                 if ( thread_count == 0 && getenv( "MLT_AVFORMAT_THREADS" ) )
 460                         thread_count = atoi( getenv( "MLT_AVFORMAT_THREADS" ) );
 461                 if ( thread_count > 1 )
 462                         c->thread_count = thread_count;
 463 #endif
 464
 465                 if (oc->oformat->flags & AVFMT_GLOBALHEADER)
 466                         c->flags |= CODEC_FLAG_GLOBAL_HEADER;
 467
 468                 // Allow the user to override the audio fourcc
 469                 if ( mlt_properties_get( properties, "atag" ) )
 470                 {
 471                         char *tail = NULL;
 472                         char *arg = mlt_properties_get( properties, "atag" );
 473                         int tag = strtol( arg, &tail, 0);
 474                         if( !tail || *tail )
 475                                 tag = arg[ 0 ] + ( arg[ 1 ] << 8 ) + ( arg[ 2 ] << 16 ) + ( arg[ 3 ] << 24 );
 476                         c->codec_tag = tag;
 477                 }
 478
 479                 // Process properties as AVOptions
 480                 char *apre = mlt_properties_get( properties, "apre" );
 481                 if ( apre )
 482                 {
 483                         mlt_properties p = mlt_properties_load( apre );
 484                         apply_properties( c, p, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM );
 485                         mlt_properties_close( p );
 486                 }
 487                 apply_properties( c, properties, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM );
 488
 489                 int audio_qscale = mlt_properties_get_int( properties, "aq" );
 490         if ( audio_qscale > QSCALE_NONE )
 491                 {
 492                         c->flags |= CODEC_FLAG_QSCALE;
 493                         c->global_quality = st->quality = FF_QP2LAMBDA * audio_qscale;
 494                 }
 495
 496                 // Set parameters controlled by MLT
 497                 c->sample_rate = mlt_properties_get_int( properties, "frequency" );
 498                 c->time_base = ( AVRational ){ 1, c->sample_rate };
 499                 c->channels = channels;
 500
 501                 if ( mlt_properties_get( properties, "alang" ) != NULL )
 502 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(43<<8)+0)
 503                         av_metadata_set2( &oc->metadata, "language", mlt_properties_get( properties, "alang" ), 0 );
 504 #else
 505
 506                         strncpy( st->language, mlt_properties_get( properties, "alang" ), sizeof( st->language ) );
 507 #endif
 508         }
 509         else
 510         {
 511                 mlt_log_error( MLT_CONSUMER_SERVICE( consumer ), "Could not allocate a stream for audio\n" );
 512         }
 513
 514         return st;
 515 }
 516
 517 static int open_audio( mlt_properties properties, AVFormatContext *oc, AVStream *st, int audio_outbuf_size, const char *codec_name )
 518 {
 519         // We will return the audio input size from here
 520         int audio_input_frame_size = 0;
 521
 522         // Get the context
 523         AVCodecContext *c = st->codec;
 524
 525         // Find the encoder
 526         AVCodec *codec;
 527         if ( codec_name )
 528                 codec = avcodec_find_encoder_by_name( codec_name );
 529         else
 530                 codec = avcodec_find_encoder( c->codec_id );
 531
 532 #if LIBAVCODEC_VERSION_MAJOR >= 53
 533         // Process properties as AVOptions on the AVCodec
 534         if ( codec && codec->priv_class )
 535         {
 536                 char *apre = mlt_properties_get( properties, "apre" );
 537                 if ( !c->priv_data && codec->priv_data_size )
 538                 {
 539                         c->priv_data = av_mallocz( codec->priv_data_size );
 540                         *(const AVClass **) c->priv_data = codec->priv_class;
 541 //                      av_opt_set_defaults( c );
 542                 }
 543                 if ( apre )
 544                 {
 545                         mlt_properties p = mlt_properties_load( apre );
 546                         apply_properties( c->priv_data, p, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM );
 547                         mlt_properties_close( p );
 548                 }
 549                 apply_properties( c->priv_data, properties, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM );
 550         }
 551 #endif
 552
 553         avformat_lock();
 554
 555         // Continue if codec found and we can open it
 556         if ( codec != NULL && avcodec_open( c, codec ) >= 0 )
 557         {
 558                 // ugly hack for PCM codecs (will be removed ASAP with new PCM
 559                 // support to compute the input frame size in samples
 560                 if ( c->frame_size <= 1 )
 561                 {
 562                         audio_input_frame_size = audio_outbuf_size / c->channels;
 563                         switch(st->codec->codec_id)
 564                         {
 565                                 case CODEC_ID_PCM_S16LE:
 566                                 case CODEC_ID_PCM_S16BE:
 567                                 case CODEC_ID_PCM_U16LE:
 568                                 case CODEC_ID_PCM_U16BE:
 569                                         audio_input_frame_size >>= 1;
 570                                         break;
 571                                 default:
 572                                         break;
 573                         }
 574                 }
 575                 else
 576                 {
 577                         audio_input_frame_size = c->frame_size;
 578                 }
 579
 580                 // Some formats want stream headers to be seperate (hmm)
 581                 if ( !strcmp( oc->oformat->name, "mp4" ) ||
 582                          !strcmp( oc->oformat->name, "mov" ) ||
 583                          !strcmp( oc->oformat->name, "3gp" ) )
 584                         c->flags |= CODEC_FLAG_GLOBAL_HEADER;
 585         }
 586         else
 587         {
 588                 mlt_log_warning( NULL, "%s: Unable to encode audio - disabling audio output.\n", __FILE__ );
 589         }
 590
 591         avformat_unlock();
 592
 593         return audio_input_frame_size;
 594 }
 595
 596 static void close_audio( AVFormatContext *oc, AVStream *st )
 597 {
 598         if ( st && st->codec )
 599         {
 600                 avformat_lock();
 601                 avcodec_close( st->codec );
 602                 avformat_unlock();
 603         }
 604 }
 605
 606 /** Add a video output stream
 607 */
 608
 609 static AVStream *add_video_stream( mlt_consumer consumer, AVFormatContext *oc, AVCodec *codec )
 610 {
 611         // Get the properties
 612         mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 613
 614         // Create a new stream
 615         AVStream *st = av_new_stream( oc, oc->nb_streams );
 616
 617         if ( st != NULL )
 618         {
 619                 char *pix_fmt = mlt_properties_get( properties, "pix_fmt" );
 620                 AVCodecContext *c = st->codec;
 621
 622                 // Establish defaults from AVOptions
 623 #if LIBAVCODEC_VERSION_MAJOR >= 53
 624                 avcodec_get_context_defaults3( c, codec );
 625 #else
 626                 avcodec_get_context_defaults2( c, CODEC_TYPE_VIDEO );
 627 #endif
 628
 629                 c->codec_id = codec->id;
 630                 c->codec_type = CODEC_TYPE_VIDEO;
 631
 632                 // Setup multi-threading
 633                 int thread_count = mlt_properties_get_int( properties, "threads" );
 634                 if ( thread_count == 0 && getenv( "MLT_AVFORMAT_THREADS" ) )
 635                         thread_count = atoi( getenv( "MLT_AVFORMAT_THREADS" ) );
 636                 if ( thread_count > 1 )
 637 #if LIBAVCODEC_VERSION_MAJOR >= 53
 638                         c->thread_count = thread_count;
 639 #else
 640                         avcodec_thread_init( c, thread_count );
 641 #endif
 642
 643                 // Process properties as AVOptions
 644                 char *vpre = mlt_properties_get( properties, "vpre" );
 645                 if ( vpre )
 646                 {
 647                         mlt_properties p = mlt_properties_load( vpre );
 648 #ifdef AVDATADIR
 649                         if ( mlt_properties_count( p ) < 1 )
 650                         {
 651                                 AVCodec *codec = avcodec_find_encoder( c->codec_id );
 652                                 if ( codec )
 653                                 {
 654                                         char *path = malloc( strlen(AVDATADIR) + strlen(codec->name) + strlen(vpre) + strlen(".ffpreset") + 2 );
 655                                         strcpy( path, AVDATADIR );
 656                                         strcat( path, codec->name );
 657                                         strcat( path, "-" );
 658                                         strcat( path, vpre );
 659                                         strcat( path, ".ffpreset" );
 660
 661                                         mlt_properties_close( p );
 662                                         p = mlt_properties_load( path );
 663                                         if ( mlt_properties_count( p ) > 0 )
 664                                                 mlt_properties_debug( p, path, stderr );
 665                                         free( path );
 666                                 }
 667                         }
 668                         else
 669                         {
 670                                 mlt_properties_debug( p, vpre, stderr );
 671                         }
 672 #endif
 673                         apply_properties( c, p, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM );
 674                         mlt_properties_close( p );
 675                 }
 676                 int colorspace = mlt_properties_get_int( properties, "colorspace" );
 677                 mlt_properties_set( properties, "colorspace", NULL );
 678                 apply_properties( c, properties, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM );
 679                 mlt_properties_set_int( properties, "colorspace", colorspace );
 680
 681                 // Set options controlled by MLT
 682                 c->width = mlt_properties_get_int( properties, "width" );
 683                 c->height = mlt_properties_get_int( properties, "height" );
 684                 c->time_base.num = mlt_properties_get_int( properties, "frame_rate_den" );
 685                 c->time_base.den = mlt_properties_get_int( properties, "frame_rate_num" );
 686                 if ( st->time_base.den == 0 )
 687                         st->time_base = c->time_base;
 688 #if LIBAVUTIL_VERSION_INT >= ((50<<16)+(8<<8)+0)
 689                 c->pix_fmt = pix_fmt ? av_get_pix_fmt( pix_fmt ) : PIX_FMT_YUV420P;
 690 #else
 691                 c->pix_fmt = pix_fmt ? avcodec_get_pix_fmt( pix_fmt ) : PIX_FMT_YUV420P;
 692 #endif
 693
 694 #if LIBAVCODEC_VERSION_INT > ((52<<16)+(28<<8)+0)
 695                 switch ( colorspace )
 696                 {
 697                 case 170:
 698                         c->colorspace = AVCOL_SPC_SMPTE170M;
 699                         break;
 700                 case 240:
 701                         c->colorspace = AVCOL_SPC_SMPTE240M;
 702                         break;
 703                 case 470:
 704                         c->colorspace = AVCOL_SPC_BT470BG;
 705                         break;
 706                 case 601:
 707                         c->colorspace = ( 576 % c->height ) ? AVCOL_SPC_SMPTE170M : AVCOL_SPC_BT470BG;
 708                         break;
 709                 case 709:
 710                         c->colorspace = AVCOL_SPC_BT709;
 711                         break;
 712                 }
 713 #endif
 714
 715                 if ( mlt_properties_get( properties, "aspect" ) )
 716                 {
 717                         // "-aspect" on ffmpeg command line is display aspect ratio
 718                         double ar = mlt_properties_get_double( properties, "aspect" );
 719                         AVRational rational = av_d2q( ar, 255 );
 720
 721                         // Update the profile and properties as well since this is an alias
 722                         // for mlt properties that correspond to profile settings
 723                         mlt_properties_set_int( properties, "display_aspect_num", rational.num );
 724                         mlt_properties_set_int( properties, "display_aspect_den", rational.den );
 725                         mlt_profile profile = mlt_service_profile( MLT_CONSUMER_SERVICE( consumer ) );
 726                         if ( profile )
 727                         {
 728                                 profile->display_aspect_num = rational.num;
 729                                 profile->display_aspect_den = rational.den;
 730                                 mlt_properties_set_double( properties, "display_ratio", mlt_profile_dar( profile ) );
 731                         }
 732
 733                         // Now compute the sample aspect ratio
 734                         rational = av_d2q( ar * c->height / c->width, 255 );
 735                         c->sample_aspect_ratio = rational;
 736                         // Update the profile and properties as well since this is an alias
 737                         // for mlt properties that correspond to profile settings
 738                         mlt_properties_set_int( properties, "sample_aspect_num", rational.num );
 739                         mlt_properties_set_int( properties, "sample_aspect_den", rational.den );
 740                         if ( profile )
 741                         {
 742                                 profile->sample_aspect_num = rational.num;
 743                                 profile->sample_aspect_den = rational.den;
 744                                 mlt_properties_set_double( properties, "aspect_ratio", mlt_profile_sar( profile ) );
 745                         }
 746                 }
 747                 else
 748                 {
 749                         c->sample_aspect_ratio.num = mlt_properties_get_int( properties, "sample_aspect_num" );
 750                         c->sample_aspect_ratio.den = mlt_properties_get_int( properties, "sample_aspect_den" );
 751                 }
 752 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(21<<8)+0)
 753                 st->sample_aspect_ratio = c->sample_aspect_ratio;
 754 #endif
 755
 756                 if ( mlt_properties_get_double( properties, "qscale" ) > 0 )
 757                 {
 758                         c->flags |= CODEC_FLAG_QSCALE;
 759                         st->quality = FF_QP2LAMBDA * mlt_properties_get_double( properties, "qscale" );
 760                 }
 761
 762                 // Allow the user to override the video fourcc
 763                 if ( mlt_properties_get( properties, "vtag" ) )
 764                 {
 765                         char *tail = NULL;
 766                         const char *arg = mlt_properties_get( properties, "vtag" );
 767                         int tag = strtol( arg, &tail, 0);
 768                         if( !tail || *tail )
 769                                 tag = arg[ 0 ] + ( arg[ 1 ] << 8 ) + ( arg[ 2 ] << 16 ) + ( arg[ 3 ] << 24 );
 770                         c->codec_tag = tag;
 771                 }
 772
 773                 // Some formats want stream headers to be seperate
 774                 if ( oc->oformat->flags & AVFMT_GLOBALHEADER )
 775                         c->flags |= CODEC_FLAG_GLOBAL_HEADER;
 776
 777                 // Translate these standard mlt consumer properties to ffmpeg
 778                 if ( mlt_properties_get_int( properties, "progressive" ) == 0 &&
 779                      mlt_properties_get_int( properties, "deinterlace" ) == 0 )
 780                 {
 781                         if ( ! mlt_properties_get( properties, "ildct" ) || mlt_properties_get_int( properties, "ildct" ) )
 782                                 c->flags |= CODEC_FLAG_INTERLACED_DCT;
 783                         if ( ! mlt_properties_get( properties, "ilme" ) || mlt_properties_get_int( properties, "ilme" ) )
 784                                 c->flags |= CODEC_FLAG_INTERLACED_ME;
 785                 }
 786
 787                 // parse the ratecontrol override string
 788                 int i;
 789                 char *rc_override = mlt_properties_get( properties, "rc_override" );
 790                 for ( i = 0; rc_override; i++ )
 791                 {
 792                         int start, end, q;
 793                         int e = sscanf( rc_override, "%d,%d,%d", &start, &end, &q );
 794                         if ( e != 3 )
 795                                 mlt_log_warning( MLT_CONSUMER_SERVICE( consumer ), "Error parsing rc_override\n" );
 796                         c->rc_override = av_realloc( c->rc_override, sizeof( RcOverride ) * ( i + 1 ) );
 797                         c->rc_override[i].start_frame = start;
 798                         c->rc_override[i].end_frame = end;
 799                         if ( q > 0 )
 800                         {
 801                                 c->rc_override[i].qscale = q;
 802                                 c->rc_override[i].quality_factor = 1.0;
 803                         }
 804                         else
 805                         {
 806                                 c->rc_override[i].qscale = 0;
 807                                 c->rc_override[i].quality_factor = -q / 100.0;
 808                         }
 809                         rc_override = strchr( rc_override, '/' );
 810                         if ( rc_override )
 811                                 rc_override++;
 812                 }
 813                 c->rc_override_count = i;
 814                 if ( !c->rc_initial_buffer_occupancy )
 815                         c->rc_initial_buffer_occupancy = c->rc_buffer_size * 3/4;
 816                 c->intra_dc_precision = mlt_properties_get_int( properties, "dc" ) - 8;
 817
 818                 // Setup dual-pass
 819                 i = mlt_properties_get_int( properties, "pass" );
 820                 if ( i == 1 )
 821                         c->flags |= CODEC_FLAG_PASS1;
 822                 else if ( i == 2 )
 823                         c->flags |= CODEC_FLAG_PASS2;
 824                 if ( codec->id != CODEC_ID_H264 && ( c->flags & ( CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2 ) ) )
 825                 {
 826                         char logfilename[1024];
 827                         FILE *f;
 828                         int size;
 829                         char *logbuffer;
 830
 831                         snprintf( logfilename, sizeof(logfilename), "%s_2pass.log",
 832                                 mlt_properties_get( properties, "passlogfile" ) ? mlt_properties_get( properties, "passlogfile" ) : mlt_properties_get( properties, "target" ) );
 833                         if ( c->flags & CODEC_FLAG_PASS1 )
 834                         {
 835                                 f = fopen( logfilename, "w" );
 836                                 if ( !f )
 837                                         perror( logfilename );
 838                                 else
 839                                         mlt_properties_set_data( properties, "_logfile", f, 0, ( mlt_destructor )fclose, NULL );
 840                         }
 841                         else
 842                         {
 843                                 /* read the log file */
 844                                 f = fopen( logfilename, "r" );
 845                                 if ( !f )
 846                                 {
 847                                         perror(logfilename);
 848                                 }
 849                                 else
 850                                 {
 851                                         mlt_properties_set( properties, "_logfilename", logfilename );
 852                                         fseek( f, 0, SEEK_END );
 853                                         size = ftell( f );
 854                                         fseek( f, 0, SEEK_SET );
 855                                         logbuffer = av_malloc( size + 1 );
 856                                         if ( !logbuffer )
 857                                                 mlt_log_fatal( MLT_CONSUMER_SERVICE( consumer ), "Could not allocate log buffer\n" );
 858                                         else
 859                                         {
 860                                                 size = fread( logbuffer, 1, size, f );
 861                                                 fclose( f );
 862                                                 logbuffer[size] = '\0';
 863                                                 c->stats_in = logbuffer;
 864                                         }
 865                                 }
 866                         }
 867                 }
 868         }
 869         else
 870         {
 871                 mlt_log_error( MLT_CONSUMER_SERVICE( consumer ), "Could not allocate a stream for video\n" );
 872         }
 873
 874         return st;
 875 }
 876
 877 static AVFrame *alloc_picture( int pix_fmt, int width, int height )
 878 {
 879         // Allocate a frame
 880         AVFrame *picture = avcodec_alloc_frame();
 881
 882         // Determine size of the
 883         int size = avpicture_get_size(pix_fmt, width, height);
 884
 885         // Allocate the picture buf
 886         uint8_t *picture_buf = av_malloc(size);
 887
 888         // If we have both, then fill the image
 889         if ( picture != NULL && picture_buf != NULL )
 890         {
 891                 // Fill the frame with the allocated buffer
 892                 avpicture_fill( (AVPicture *)picture, picture_buf, pix_fmt, width, height);
 893         }
 894         else
 895         {
 896                 // Something failed - clean up what we can
 897                 av_free( picture );
 898                 av_free( picture_buf );
 899                 picture = NULL;
 900         }
 901
 902         return picture;
 903 }
 904
 905 static int open_video( mlt_properties properties, AVFormatContext *oc, AVStream *st, const char *codec_name )
 906 {
 907         // Get the codec
 908         AVCodecContext *video_enc = st->codec;
 909
 910         // find the video encoder
 911         AVCodec *codec;
 912         if ( codec_name )
 913                 codec = avcodec_find_encoder_by_name( codec_name );
 914         else
 915                 codec = avcodec_find_encoder( video_enc->codec_id );
 916
 917 #if LIBAVCODEC_VERSION_MAJOR >= 53
 918         // Process properties as AVOptions on the AVCodec
 919         if ( codec && codec->priv_class )
 920         {
 921                 char *vpre = mlt_properties_get( properties, "vpre" );
 922                 if ( !video_enc->priv_data && codec->priv_data_size )
 923                 {
 924                         video_enc->priv_data = av_mallocz( codec->priv_data_size );
 925                         *(const AVClass **) video_enc->priv_data = codec->priv_class;
 926 //                      av_opt_set_defaults( video_enc );
 927                 }
 928                 if ( vpre )
 929                 {
 930                         mlt_properties p = mlt_properties_load( vpre );
 931                         apply_properties( video_enc->priv_data, p, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM );
 932                         mlt_properties_close( p );
 933                 }
 934                 apply_properties( video_enc->priv_data, properties, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM );
 935         }
 936 #endif
 937
 938         if( codec && codec->pix_fmts )
 939         {
 940                 const enum PixelFormat *p = codec->pix_fmts;
 941                 for( ; *p!=-1; p++ )
 942                 {
 943                         if( *p == video_enc->pix_fmt )
 944                                 break;
 945                 }
 946                 if( *p == -1 )
 947                         video_enc->pix_fmt = codec->pix_fmts[ 0 ];
 948         }
 949
 950         // Open the codec safely
 951         avformat_lock();
 952         int result = codec != NULL && avcodec_open( video_enc, codec ) >= 0;
 953         avformat_unlock();
 954
 955         return result;
 956 }
 957
 958 void close_video(AVFormatContext *oc, AVStream *st)
 959 {
 960         if ( st && st->codec )
 961         {
 962                 avformat_lock();
 963                 av_freep( &st->codec->stats_in );
 964                 avcodec_close(st->codec);
 965                 avformat_unlock();
 966         }
 967 }
 968
 969 static inline long time_difference( struct timeval *time1 )
 970 {
 971         struct timeval time2;
 972         gettimeofday( &time2, NULL );
 973         return time2.tv_sec * 1000000 + time2.tv_usec - time1->tv_sec * 1000000 - time1->tv_usec;
 974 }
 975
 976 static int mlt_write(void *h, uint8_t *buf, int size)
 977 {
 978         mlt_properties properties = (mlt_properties) h;
 979         mlt_events_fire( properties, "avformat-write", buf, size, NULL );
 980         return 0;
 981 }
 982
 983 static void write_transmitter( mlt_listener listener, mlt_properties owner, mlt_service service, void **args )
 984 {
 985         listener( owner, service, (uint8_t*) args[0], (int) args[1] );
 986 }
 987
 988
 989 /** The main thread - the argument is simply the consumer.
 990 */
 991
 992 static void *consumer_thread( void *arg )
 993 {
 994         // Map the argument to the object
 995         mlt_consumer consumer = arg;
 996
 997         // Get the properties
 998         mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 999
1000         // Get the terminate on pause property
1001         int terminate_on_pause = mlt_properties_get_int( properties, "terminate_on_pause" );
1002         int terminated = 0;
1003
1004         // Determine if feed is slow (for realtime stuff)
1005         int real_time_output = mlt_properties_get_int( properties, "real_time" );
1006
1007         // Time structures
1008         struct timeval ante;
1009
1010         // Get the frame rate
1011         double fps = mlt_properties_get_double( properties, "fps" );
1012
1013         // Get width and height
1014         int width = mlt_properties_get_int( properties, "width" );
1015         int height = mlt_properties_get_int( properties, "height" );
1016         int img_width = width;
1017         int img_height = height;
1018
1019         // Get default audio properties
1020         mlt_audio_format aud_fmt = mlt_audio_s16;
1021         int channels = mlt_properties_get_int( properties, "channels" );
1022         int total_channels = channels;
1023         int frequency = mlt_properties_get_int( properties, "frequency" );
1024         int16_t *pcm = NULL;
1025         int samples = 0;
1026
1027         // AVFormat audio buffer and frame size
1028         int audio_outbuf_size = AUDIO_BUFFER_SIZE;
1029         uint8_t *audio_outbuf = av_malloc( audio_outbuf_size );
1030         int audio_input_frame_size = 0;
1031
1032         // AVFormat video buffer and frame count
1033         int frame_count = 0;
1034         int video_outbuf_size = VIDEO_BUFFER_SIZE;
1035         uint8_t *video_outbuf = av_malloc( video_outbuf_size );
1036
1037         // Used for the frame properties
1038         mlt_frame frame = NULL;
1039         mlt_properties frame_properties = NULL;
1040
1041         // Get the queues
1042         mlt_deque queue = mlt_properties_get_data( properties, "frame_queue", NULL );
1043         sample_fifo fifo = mlt_properties_get_data( properties, "sample_fifo", NULL );
1044
1045         // Need two av pictures for converting
1046         AVFrame *output = NULL;
1047         AVFrame *input = alloc_picture( PIX_FMT_YUYV422, width, height );
1048
1049         // For receiving images from an mlt_frame
1050         uint8_t *image;
1051         mlt_image_format img_fmt = mlt_image_yuv422;
1052
1053         // For receiving audio samples back from the fifo
1054         int16_t *audio_buf_1 = av_malloc( AUDIO_ENCODE_BUFFER_SIZE );
1055         int16_t *audio_buf_2 = NULL;
1056         int count = 0;
1057
1058         // Allocate the context
1059 #if (LIBAVFORMAT_VERSION_INT >= ((52<<16)+(26<<8)+0))
1060         AVFormatContext *oc = avformat_alloc_context( );
1061 #else
1062         AVFormatContext *oc = av_alloc_format_context( );
1063 #endif
1064
1065         // Streams
1066         AVStream *video_st = NULL;
1067         AVStream *audio_st[ MAX_AUDIO_STREAMS ];
1068
1069         // Time stamps
1070         double audio_pts = 0;
1071         double video_pts = 0;
1072
1073         // Frames dispatched
1074         long int frames = 0;
1075         long int total_time = 0;
1076
1077         // Determine the format
1078         AVOutputFormat *fmt = NULL;
1079         const char *filename = mlt_properties_get( properties, "target" );
1080         char *format = mlt_properties_get( properties, "f" );
1081         char *vcodec = mlt_properties_get( properties, "vcodec" );
1082         char *acodec = mlt_properties_get( properties, "acodec" );
1083         AVCodec *audio_codec = NULL;
1084         AVCodec *video_codec = NULL;
1085
1086         // Used to store and override codec ids
1087         int audio_codec_id;
1088         int video_codec_id;
1089
1090         // Misc
1091         char key[27];
1092         mlt_properties frame_meta_properties = mlt_properties_new();
1093
1094         // Initialize audio_st
1095         int i = MAX_AUDIO_STREAMS;
1096         while ( i-- )
1097                 audio_st[i] = NULL;
1098
1099         // Check for user selected format first
1100         if ( format != NULL )
1101 #if LIBAVFORMAT_VERSION_INT < ((52<<16)+(45<<8)+0)
1102                 fmt = guess_format( format, NULL, NULL );
1103 #else
1104                 fmt = av_guess_format( format, NULL, NULL );
1105 #endif
1106
1107         // Otherwise check on the filename
1108         if ( fmt == NULL && filename != NULL )
1109 #if LIBAVFORMAT_VERSION_INT < ((52<<16)+(45<<8)+0)
1110                 fmt = guess_format( NULL, filename, NULL );
1111 #else
1112                 fmt = av_guess_format( NULL, filename, NULL );
1113 #endif
1114
1115         // Otherwise default to mpeg
1116         if ( fmt == NULL )
1117 #if LIBAVFORMAT_VERSION_INT < ((52<<16)+(45<<8)+0)
1118                 fmt = guess_format( "mpeg", NULL, NULL );
1119 #else
1120                 fmt = av_guess_format( "mpeg", NULL, NULL );
1121 #endif
1122
1123         // We need a filename - default to stdout?
1124         if ( filename == NULL || !strcmp( filename, "" ) )
1125                 filename = "pipe:";
1126
1127         // Get the codec ids selected
1128         audio_codec_id = fmt->audio_codec;
1129         video_codec_id = fmt->video_codec;
1130
1131         // Check for audio codec overides
1132         if ( ( acodec && strcmp( acodec, "none" ) == 0 ) || mlt_properties_get_int( properties, "an" ) )
1133                 audio_codec_id = CODEC_ID_NONE;
1134         else if ( acodec )
1135         {
1136                 audio_codec = avcodec_find_encoder_by_name( acodec );
1137                 if ( audio_codec )
1138                 {
1139                         audio_codec_id = audio_codec->id;
1140                         if ( audio_codec_id == CODEC_ID_AC3 && avcodec_find_encoder_by_name( "ac3_fixed" ) )
1141                         {
1142                                 mlt_properties_set( properties, "_acodec", "ac3_fixed" );
1143                                 acodec = mlt_properties_get( properties, "_acodec" );
1144                                 audio_codec = avcodec_find_encoder_by_name( acodec );
1145                         }
1146                 }
1147                 else
1148                 {
1149                         audio_codec_id = CODEC_ID_NONE;
1150                         mlt_log_warning( MLT_CONSUMER_SERVICE( consumer ), "audio codec %s unrecognised - ignoring\n", acodec );
1151                 }
1152         }
1153         else
1154         {
1155                 audio_codec = avcodec_find_encoder( audio_codec_id );
1156         }
1157
1158         // Check for video codec overides
1159         if ( ( vcodec && strcmp( vcodec, "none" ) == 0 ) || mlt_properties_get_int( properties, "vn" ) )
1160                 video_codec_id = CODEC_ID_NONE;
1161         else if ( vcodec )
1162         {
1163                 video_codec = avcodec_find_encoder_by_name( vcodec );
1164                 if ( video_codec )
1165                 {
1166                         video_codec_id = video_codec->id;
1167                 }
1168                 else
1169                 {
1170                         video_codec_id = CODEC_ID_NONE;
1171                         mlt_log_warning( MLT_CONSUMER_SERVICE( consumer ), "video codec %s unrecognised - ignoring\n", vcodec );
1172                 }
1173         }
1174         else
1175         {
1176                 video_codec = avcodec_find_encoder( video_codec_id );
1177         }
1178
1179         // Write metadata
1180 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(31<<8)+0)
1181         for ( i = 0; i < mlt_properties_count( properties ); i++ )
1182         {
1183                 char *name = mlt_properties_get_name( properties, i );
1184                 if ( name && !strncmp( name, "meta.attr.", 10 ) )
1185                 {
1186                         char *key = strdup( name + 10 );
1187                         char *markup = strrchr( key, '.' );
1188                         if ( markup && !strcmp( markup, ".markup") )
1189                         {
1190                                 markup[0] = '\0';
1191                                 if ( !strstr( key, ".stream." ) )
1192 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(43<<8)+0)
1193                                         av_metadata_set2( &oc->metadata, key, mlt_properties_get_value( properties, i ), 0 );
1194 #else
1195                                         av_metadata_set( &oc->metadata, key, mlt_properties_get_value( properties, i ) );
1196 #endif
1197                         }
1198                         free( key );
1199                 }
1200         }
1201 #else
1202         char *tmp = NULL;
1203         int metavalue;
1204
1205         tmp = mlt_properties_get( properties, "meta.attr.title.markup");
1206         if (tmp != NULL) snprintf( oc->title, sizeof(oc->title), "%s", tmp );
1207
1208         tmp = mlt_properties_get( properties, "meta.attr.comment.markup");
1209         if (tmp != NULL) snprintf( oc->comment, sizeof(oc->comment), "%s", tmp );
1210
1211         tmp = mlt_properties_get( properties, "meta.attr.author.markup");
1212         if (tmp != NULL) snprintf( oc->author, sizeof(oc->author), "%s", tmp );
1213
1214         tmp = mlt_properties_get( properties, "meta.attr.copyright.markup");
1215         if (tmp != NULL) snprintf( oc->copyright, sizeof(oc->copyright), "%s", tmp );
1216
1217         tmp = mlt_properties_get( properties, "meta.attr.album.markup");
1218         if (tmp != NULL) snprintf( oc->album, sizeof(oc->album), "%s", tmp );
1219
1220         metavalue = mlt_properties_get_int( properties, "meta.attr.year.markup");
1221         if (metavalue != 0) oc->year = metavalue;
1222
1223         metavalue = mlt_properties_get_int( properties, "meta.attr.track.markup");
1224         if (metavalue != 0) oc->track = metavalue;
1225 #endif
1226
1227         oc->oformat = fmt;
1228         snprintf( oc->filename, sizeof(oc->filename), "%s", filename );
1229
1230         // Get a frame now, so we can set some AVOptions from properties.
1231         frame = mlt_consumer_rt_frame( consumer );
1232
1233         // Set the timecode from the MLT metadata if available.
1234         const char *timecode = mlt_properties_get( MLT_FRAME_PROPERTIES(frame), "meta.attr.vitc.markup" );
1235         if ( timecode && strcmp( timecode, "" ) )
1236         {
1237                 mlt_properties_set( properties, "timecode", timecode );
1238                 if ( strchr( timecode, ';' ) )
1239                         mlt_properties_set_int( properties, "drop_frame_timecode", 1 );
1240         }
1241
1242         // Add audio and video streams
1243         if ( video_codec_id != CODEC_ID_NONE )
1244                 video_st = add_video_stream( consumer, oc, video_codec );
1245         if ( audio_codec_id != CODEC_ID_NONE )
1246         {
1247                 int is_multi = 0;
1248
1249                 total_channels = 0;
1250                 // multitrack audio
1251                 for ( i = 0; i < MAX_AUDIO_STREAMS; i++ )
1252                 {
1253                         sprintf( key, "channels.%d", i );
1254                         int j = mlt_properties_get_int( properties, key );
1255                         if ( j )
1256                         {
1257                                 is_multi = 1;
1258                                 total_channels += j;
1259                                 audio_st[i] = add_audio_stream( consumer, oc, audio_codec, j );
1260                         }
1261                 }
1262                 // single track
1263                 if ( !is_multi )
1264                 {
1265                         audio_st[0] = add_audio_stream( consumer, oc, audio_codec, channels );
1266                         total_channels = channels;
1267                 }
1268         }
1269         mlt_properties_set_int( properties, "channels", total_channels );
1270
1271         // Set the parameters (even though we have none...)
1272         if ( av_set_parameters(oc, NULL) >= 0 )
1273         {
1274                 oc->preload = ( int )( mlt_properties_get_double( properties, "muxpreload" ) * AV_TIME_BASE );
1275                 oc->max_delay= ( int )( mlt_properties_get_double( properties, "muxdelay" ) * AV_TIME_BASE );
1276
1277                 // Process properties as AVOptions
1278                 char *fpre = mlt_properties_get( properties, "fpre" );
1279                 if ( fpre )
1280                 {
1281                         mlt_properties p = mlt_properties_load( fpre );
1282                         apply_properties( oc, p, AV_OPT_FLAG_ENCODING_PARAM );
1283 #if LIBAVFORMAT_VERSION_MAJOR >= 53
1284                         if ( oc->oformat && oc->oformat->priv_class && oc->priv_data )
1285                                 apply_properties( oc->priv_data, p, AV_OPT_FLAG_ENCODING_PARAM );
1286 #endif
1287                         mlt_properties_close( p );
1288                 }
1289                 apply_properties( oc, properties, AV_OPT_FLAG_ENCODING_PARAM );
1290 #if LIBAVFORMAT_VERSION_MAJOR >= 53
1291                 if ( oc->oformat && oc->oformat->priv_class && oc->priv_data )
1292                         apply_properties( oc->priv_data, properties, AV_OPT_FLAG_ENCODING_PARAM );
1293 #endif
1294
1295                 if ( video_st && !open_video( properties, oc, video_st, vcodec? vcodec : NULL ) )
1296                         video_st = NULL;
1297                 for ( i = 0; i < MAX_AUDIO_STREAMS && audio_st[i]; i++ )
1298                 {
1299                         audio_input_frame_size = open_audio( properties, oc, audio_st[i], audio_outbuf_size,
1300                                 acodec? acodec : NULL );
1301                         if ( !audio_input_frame_size )
1302                                 audio_st[i] = NULL;
1303                 }
1304
1305                 // Setup custom I/O if redirecting
1306                 if ( mlt_properties_get_int( properties, "redirect" ) )
1307                 {
1308                         int buffer_size = 32768;
1309                         unsigned char *buffer = av_malloc( buffer_size );
1310 #if LIBAVFORMAT_VERSION_MAJOR >= 53
1311                         AVIOContext* io = avio_alloc_context( buffer, buffer_size, 1, properties, NULL, mlt_write, NULL );
1312 #else
1313                         ByteIOContext* io = av_alloc_put_byte( buffer, buffer_size, 1, properties, NULL, mlt_write, NULL );
1314 #endif
1315                         if ( buffer && io )
1316                         {
1317                                 oc->pb = io;
1318 #if LIBAVFORMAT_VERSION_MAJOR >= 53
1319                                 oc->flags |= AVFMT_FLAG_CUSTOM_IO;
1320 #endif
1321                                 mlt_properties_set_data( properties, "avio_buffer", buffer, buffer_size, av_free, NULL );
1322                                 mlt_properties_set_data( properties, "avio_context", io, 0, av_free, NULL );
1323                                 mlt_events_register( properties, "avformat-write", (mlt_transmitter) write_transmitter );
1324                         }
1325                         else
1326                         {
1327                                 av_free( buffer );
1328                                 mlt_log_error( MLT_CONSUMER_SERVICE(consumer), "failed to setup output redirection\n" );
1329                         }
1330                 }
1331                 // Open the output file, if needed
1332                 else if ( !( fmt->flags & AVFMT_NOFILE ) )
1333                 {
1334 #if LIBAVFORMAT_VERSION_MAJOR >= 53
1335                         if ( avio_open( &oc->pb, filename, AVIO_FLAG_WRITE ) < 0 )
1336 #else
1337                         if ( url_fopen( &oc->pb, filename, URL_WRONLY ) < 0 )
1338 #endif
1339                         {
1340                                 mlt_log_error( MLT_CONSUMER_SERVICE( consumer ), "Could not open '%s'\n", filename );
1341                                 mlt_properties_set_int( properties, "running", 0 );
1342                         }
1343                 }
1344
1345                 // Write the stream header.
1346                 if ( mlt_properties_get_int( properties, "running" ) )
1347                         av_write_header( oc );
1348         }
1349         else
1350         {
1351                 mlt_log_error( MLT_CONSUMER_SERVICE( consumer ), "Invalid output format parameters\n" );
1352                 mlt_properties_set_int( properties, "running", 0 );
1353         }
1354
1355         // Allocate picture
1356         if ( video_st )
1357                 output = alloc_picture( video_st->codec->pix_fmt, width, height );
1358
1359         // Last check - need at least one stream
1360         if ( !audio_st[0] && !video_st )
1361                 mlt_properties_set_int( properties, "running", 0 );
1362
1363         // Get the starting time (can ignore the times above)
1364         gettimeofday( &ante, NULL );
1365
1366         // Loop while running
1367         while( mlt_properties_get_int( properties, "running" ) &&
1368                ( !terminated || ( video_st && mlt_deque_count( queue ) ) ) )
1369         {
1370                 if ( !frame )
1371                         frame = mlt_consumer_rt_frame( consumer );
1372
1373                 // Check that we have a frame to work with
1374                 if ( frame != NULL )
1375                 {
1376                         // Increment frames dispatched
1377                         frames ++;
1378
1379                         // Default audio args
1380                         frame_properties = MLT_FRAME_PROPERTIES( frame );
1381
1382                         // Check for the terminated condition
1383                         terminated = terminate_on_pause && mlt_properties_get_double( frame_properties, "_speed" ) == 0.0;
1384
1385                         // Get audio and append to the fifo
1386                         if ( !terminated && audio_st[0] )
1387                         {
1388                                 samples = mlt_sample_calculator( fps, frequency, count ++ );
1389                                 channels = total_channels;
1390                                 mlt_frame_get_audio( frame, (void**) &pcm, &aud_fmt, &frequency, &channels, &samples );
1391
1392                                 // Save the audio channel remap properties for later
1393                                 mlt_properties_pass( frame_meta_properties, frame_properties, "meta.map.audio." );
1394
1395                                 // Create the fifo if we don't have one
1396                                 if ( fifo == NULL )
1397                                 {
1398                                         fifo = sample_fifo_init( frequency, channels );
1399                                         mlt_properties_set_data( properties, "sample_fifo", fifo, 0, ( mlt_destructor )sample_fifo_close, NULL );
1400                                 }
1401
1402                                 // Silence if not normal forward speed
1403                                 if ( mlt_properties_get_double( frame_properties, "_speed" ) != 1.0 )
1404                                         memset( pcm, 0, samples * channels * 2 );
1405
1406                                 // Append the samples
1407                                 sample_fifo_append( fifo, pcm, samples * channels );
1408                                 total_time += ( samples * 1000000 ) / frequency;
1409
1410                                 if ( !video_st )
1411                                         mlt_events_fire( properties, "consumer-frame-show", frame, NULL );
1412                         }
1413
1414                         // Encode the image
1415                         if ( !terminated && video_st )
1416                                 mlt_deque_push_back( queue, frame );
1417                         else
1418                                 mlt_frame_close( frame );
1419                         frame = NULL;
1420                 }
1421
1422                 // While we have stuff to process, process...
1423                 while ( 1 )
1424                 {
1425                         // Write interleaved audio and video frames
1426                         if ( !video_st || ( video_st && audio_st[0] && audio_pts < video_pts ) )
1427                         {
1428                                 // Write audio
1429                                 if ( ( video_st && terminated ) || ( channels * audio_input_frame_size ) < sample_fifo_used( fifo ) )
1430                                 {
1431                                         int j = 0; // channel offset into interleaved source buffer
1432                                         int n = FFMIN( FFMIN( channels * audio_input_frame_size, sample_fifo_used( fifo ) ), AUDIO_ENCODE_BUFFER_SIZE );
1433
1434                                         // Get the audio samples
1435                                         if ( n > 0 )
1436                                         {
1437                                                 sample_fifo_fetch( fifo, audio_buf_1, n );
1438                                         }
1439                                         else if ( audio_codec_id == CODEC_ID_VORBIS && terminated )
1440                                         {
1441                                                 // This prevents an infinite loop when some versions of vorbis do not
1442                                                 // increment pts when encoding silence.
1443                                                 audio_pts = video_pts;
1444                                                 break;
1445                                         }
1446                                         else
1447                                         {
1448                                                 memset( audio_buf_1, 0, AUDIO_ENCODE_BUFFER_SIZE );
1449                                         }
1450                                         samples = n / channels;
1451
1452                                         // For each output stream
1453                                         for ( i = 0; i < MAX_AUDIO_STREAMS && audio_st[i] && j < total_channels; i++ )
1454                                         {
1455                                                 AVStream *stream = audio_st[i];
1456                                                 AVCodecContext *codec = stream->codec;
1457                                                 AVPacket pkt;
1458
1459                                                 av_init_packet( &pkt );
1460
1461                                                 // Optimized for single track and no channel remap
1462                                                 if ( !audio_st[1] && !mlt_properties_count( frame_meta_properties ) )
1463                                                 {
1464                                                         pkt.size = avcodec_encode_audio( codec, audio_outbuf, audio_outbuf_size, audio_buf_1 );
1465                                                 }
1466                                                 else
1467                                                 {
1468                                                         // Extract the audio channels according to channel mapping
1469                                                         int dest_offset = 0; // channel offset into interleaved dest buffer
1470
1471                                                         // Get the number of channels for this stream
1472                                                         sprintf( key, "channels.%d", i );
1473                                                         int current_channels = mlt_properties_get_int( properties, key );
1474
1475                                                         // Clear the destination audio buffer.
1476                                                         if ( !audio_buf_2 )
1477                                                                 audio_buf_2 = av_mallocz( AUDIO_ENCODE_BUFFER_SIZE );
1478                                                         else
1479                                                                 memset( audio_buf_2, 0, AUDIO_ENCODE_BUFFER_SIZE );
1480
1481                                                         // For each output channel
1482                                                         while ( dest_offset < current_channels && j < total_channels )
1483                                                         {
1484                                                                 int map_start = -1, map_channels = 0;
1485                                                                 int source_offset = 0;
1486                                                                 int k;
1487
1488                                                                 // Look for a mapping that starts at j
1489                                                                 for ( k = 0; k < (MAX_AUDIO_STREAMS * 2) && map_start != j; k++ )
1490                                                                 {
1491                                                                         sprintf( key, "%d.channels", k );
1492                                                                         map_channels = mlt_properties_get_int( frame_meta_properties, key );
1493                                                                         sprintf( key, "%d.start", k );
1494                                                                         if ( mlt_properties_get( frame_meta_properties, key ) )
1495                                                                                 map_start = mlt_properties_get_int( frame_meta_properties, key );
1496                                                                         if ( map_start != j )
1497                                                                                 source_offset += map_channels;
1498                                                                 }
1499
1500                                                                 // If no mapping
1501                                                                 if ( map_start != j )
1502                                                                 {
1503                                                                         map_channels = current_channels;
1504                                                                         source_offset = j;
1505                                                                 }
1506
1507                                                                 // Copy samples if source offset valid
1508                                                                 if ( source_offset < channels )
1509                                                                 {
1510                                                                         // Interleave the audio buffer with the # channels for this stream/mapping.
1511                                                                         for ( k = 0; k < map_channels; k++, j++, source_offset++, dest_offset++ )
1512                                                                         {
1513                                                                                 int16_t *src = audio_buf_1 + source_offset;
1514                                                                                 int16_t *dest = audio_buf_2 + dest_offset;
1515                                                                                 int s = samples + 1;
1516
1517                                                                                 while ( --s ) {
1518                                                                                         *dest = *src;
1519                                                                                         dest += current_channels;
1520                                                                                         src += channels;
1521                                                                                 }
1522                                                                         }
1523                                                                 }
1524                                                                 // Otherwise silence
1525                                                                 else
1526                                                                 {
1527                                                                         j += current_channels;
1528                                                                         dest_offset += current_channels;
1529                                                                 }
1530                                                         }
1531                                                         pkt.size = avcodec_encode_audio( codec, audio_outbuf, audio_outbuf_size, audio_buf_2 );
1532                                                 }
1533
1534                                                 // Write the compressed frame in the media file
1535                                                 if ( codec->coded_frame && codec->coded_frame->pts != AV_NOPTS_VALUE )
1536                                                 {
1537                                                         pkt.pts = av_rescale_q( codec->coded_frame->pts, codec->time_base, stream->time_base );
1538                                                         mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), "audio stream %d pkt pts %"PRId64" frame pts %"PRId64,
1539                                                                 stream->index, pkt.pts, codec->coded_frame->pts );
1540                                                 }
1541                                                 pkt.flags |= PKT_FLAG_KEY;
1542                                                 pkt.stream_index = stream->index;
1543                                                 pkt.data = audio_outbuf;
1544
1545                                                 if ( pkt.size > 0 )
1546                                                 {
1547                                                         if ( av_interleaved_write_frame( oc, &pkt ) )
1548                                                         {
1549                                                                 mlt_log_fatal( MLT_CONSUMER_SERVICE( consumer ), "error writing audio frame\n" );
1550                                                                 mlt_events_fire( properties, "consumer-fatal-error", NULL );
1551                                                                 goto on_fatal_error;
1552                                                         }
1553                                                 }
1554
1555                                                 mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), " frame_size %d\n", codec->frame_size );
1556                                                 if ( i == 0 )
1557                                                 {
1558                                                         audio_pts = (double)stream->pts.val * av_q2d( stream->time_base );
1559                                                 }
1560                                         }
1561                                 }
1562                                 else
1563                                 {
1564                                         break;
1565                                 }
1566                         }
1567                         else if ( video_st )
1568                         {
1569                                 // Write video
1570                                 if ( mlt_deque_count( queue ) )
1571                                 {
1572                                         int out_size, ret = 0;
1573                                         AVCodecContext *c;
1574
1575                                         frame = mlt_deque_pop_front( queue );
1576                                         frame_properties = MLT_FRAME_PROPERTIES( frame );
1577
1578                                         c = video_st->codec;
1579
1580                                         if ( mlt_properties_get_int( frame_properties, "rendered" ) )
1581                                         {
1582                                                 int i = 0;
1583                                                 uint8_t *p;
1584                                                 uint8_t *q;
1585
1586                                                 mlt_frame_get_image( frame, &image, &img_fmt, &img_width, &img_height, 0 );
1587
1588                                                 q = image;
1589
1590                                                 // Convert the mlt frame to an AVPicture
1591                                                 for ( i = 0; i < height; i ++ )
1592                                                 {
1593                                                         p = input->data[ 0 ] + i * input->linesize[ 0 ];
1594                                                         memcpy( p, q, width * 2 );
1595                                                         q += width * 2;
1596                                                 }
1597
1598                                                 // Do the colour space conversion
1599 #ifdef SWSCALE
1600                                                 int flags = SWS_BILINEAR;
1601 #ifdef USE_MMX
1602                                                 flags |= SWS_CPU_CAPS_MMX;
1603 #endif
1604 #ifdef USE_SSE
1605                                                 flags |= SWS_CPU_CAPS_MMX2;
1606 #endif
1607                                                 struct SwsContext *context = sws_getContext( width, height, PIX_FMT_YUYV422,
1608                                                         width, height, video_st->codec->pix_fmt, flags, NULL, NULL, NULL);
1609                                                 sws_scale( context, (const uint8_t* const*) input->data, input->linesize, 0, height,
1610                                                         output->data, output->linesize);
1611                                                 sws_freeContext( context );
1612 #else
1613                                                 img_convert( ( AVPicture * )output, video_st->codec->pix_fmt, ( AVPicture * )input, PIX_FMT_YUYV422, width, height );
1614 #endif
1615
1616                                                 mlt_events_fire( properties, "consumer-frame-show", frame, NULL );
1617
1618                                                 // Apply the alpha if applicable
1619                                                 if ( video_st->codec->pix_fmt == PIX_FMT_RGB32 )
1620                                                 {
1621                                                         uint8_t *alpha = mlt_frame_get_alpha_mask( frame );
1622                                                         register int n;
1623
1624                                                         for ( i = 0; i < height; i ++ )
1625                                                         {
1626                                                                 n = ( width + 7 ) / 8;
1627                                                                 p = output->data[ 0 ] + i * output->linesize[ 0 ] + 3;
1628
1629                                                                 switch( width % 8 )
1630                                                                 {
1631                                                                         case 0: do { *p = *alpha++; p += 4;
1632                                                                         case 7:          *p = *alpha++; p += 4;
1633                                                                         case 6:          *p = *alpha++; p += 4;
1634                                                                         case 5:          *p = *alpha++; p += 4;
1635                                                                         case 4:          *p = *alpha++; p += 4;
1636                                                                         case 3:          *p = *alpha++; p += 4;
1637                                                                         case 2:          *p = *alpha++; p += 4;
1638                                                                         case 1:          *p = *alpha++; p += 4;
1639                                                                                         }
1640                                                                                         while( --n );
1641                                                                 }
1642                                                         }
1643                                                 }
1644                                         }
1645
1646                                         if (oc->oformat->flags & AVFMT_RAWPICTURE)
1647                                         {
1648                                                 // raw video case. The API will change slightly in the near future for that
1649                                                 AVPacket pkt;
1650                                                 av_init_packet(&pkt);
1651
1652                                                 pkt.flags |= PKT_FLAG_KEY;
1653                                                 pkt.stream_index= video_st->index;
1654                                                 pkt.data= (uint8_t *)output;
1655                                                 pkt.size= sizeof(AVPicture);
1656
1657                                                 ret = av_write_frame(oc, &pkt);
1658                                                 video_pts += c->frame_size;
1659                                         }
1660                                         else
1661                                         {
1662                                                 // Set the quality
1663                                                 output->quality = video_st->quality;
1664
1665                                                 // Set frame interlace hints
1666                                                 output->interlaced_frame = !mlt_properties_get_int( frame_properties, "progressive" );
1667                                                 output->top_field_first = mlt_properties_get_int( frame_properties, "top_field_first" );
1668                                                 output->pts = frame_count;
1669
1670                                                 // Encode the image
1671                                                 out_size = avcodec_encode_video(c, video_outbuf, video_outbuf_size, output );
1672
1673                                                 // If zero size, it means the image was buffered
1674                                                 if ( out_size > 0 )
1675                                                 {
1676                                                         AVPacket pkt;
1677                                                         av_init_packet( &pkt );
1678
1679                                                         if ( c->coded_frame && c->coded_frame->pts != AV_NOPTS_VALUE )
1680                                                                 pkt.pts= av_rescale_q( c->coded_frame->pts, c->time_base, video_st->time_base );
1681                                                         mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), "video pkt pts %"PRId64" frame pts %"PRId64, pkt.pts, c->coded_frame->pts );
1682                                                         if( c->coded_frame && c->coded_frame->key_frame )
1683                                                                 pkt.flags |= PKT_FLAG_KEY;
1684                                                         pkt.stream_index= video_st->index;
1685                                                         pkt.data= video_outbuf;
1686                                                         pkt.size= out_size;
1687
1688                                                         // write the compressed frame in the media file
1689                                                         ret = av_interleaved_write_frame(oc, &pkt);
1690                                                         mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), " frame_size %d\n", c->frame_size );
1691                                                         video_pts = (double)video_st->pts.val * av_q2d( video_st->time_base );
1692
1693                                                         // Dual pass logging
1694                                                         if ( mlt_properties_get_data( properties, "_logfile", NULL ) && c->stats_out )
1695                                                                 fprintf( mlt_properties_get_data( properties, "_logfile", NULL ), "%s", c->stats_out );
1696                                                 }
1697                                                 else if ( out_size < 0 )
1698                                                 {
1699                                                         mlt_log_warning( MLT_CONSUMER_SERVICE( consumer ), "error with video encode %d\n", frame_count );
1700                                                 }
1701                                         }
1702                                         frame_count++;
1703                                         if ( ret )
1704                                         {
1705                                                 mlt_log_fatal( MLT_CONSUMER_SERVICE( consumer ), "error writing video frame\n" );
1706                                                 mlt_events_fire( properties, "consumer-fatal-error", NULL );
1707                                                 goto on_fatal_error;
1708                                         }
1709                                         mlt_frame_close( frame );
1710                                         frame = NULL;
1711                                 }
1712                                 else
1713                                 {
1714                                         break;
1715                                 }
1716                         }
1717                         if ( audio_st[0] )
1718                                 mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), "audio pts %"PRId64" (%f) ", audio_st[0]->pts.val, audio_pts );
1719                         if ( video_st )
1720                                 mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), "video pts %"PRId64" (%f) ", video_st->pts.val, video_pts );
1721                         mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), "\n" );
1722                 }
1723
1724                 if ( real_time_output == 1 && frames % 2 == 0 )
1725                 {
1726                         long passed = time_difference( &ante );
1727                         if ( fifo != NULL )
1728                         {
1729                                 long pending = ( ( ( long )sample_fifo_used( fifo ) * 1000 ) / frequency ) * 1000;
1730                                 passed -= pending;
1731                         }
1732                         if ( passed < total_time )
1733                         {
1734                                 long total = ( total_time - passed );
1735                                 struct timespec t = { total / 1000000, ( total % 1000000 ) * 1000 };
1736                                 nanosleep( &t, NULL );
1737                         }
1738                 }
1739         }
1740
1741         // Flush the encoder buffers
1742         if ( real_time_output <= 0 )
1743         {
1744                 // Flush audio fifo
1745                 // TODO: flush all audio streams
1746                 if ( audio_st[0] && audio_st[0]->codec->frame_size > 1 ) for (;;)
1747                 {
1748                         AVCodecContext *c = audio_st[0]->codec;
1749                         AVPacket pkt;
1750                         av_init_packet( &pkt );
1751                         pkt.size = 0;
1752
1753                         if ( /*( c->capabilities & CODEC_CAP_SMALL_LAST_FRAME ) &&*/
1754                                 ( channels * audio_input_frame_size < sample_fifo_used( fifo ) ) )
1755                         {
1756                                 sample_fifo_fetch( fifo, audio_buf_1, channels * audio_input_frame_size );
1757                                 pkt.size = avcodec_encode_audio( c, audio_outbuf, audio_outbuf_size, audio_buf_1 );
1758                         }
1759                         if ( pkt.size <= 0 )
1760                                 pkt.size = avcodec_encode_audio( c, audio_outbuf, audio_outbuf_size, NULL );
1761                         mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), "flushing audio size %d\n", pkt.size );
1762                         if ( pkt.size <= 0 )
1763                                 break;
1764
1765                         // Write the compressed frame in the media file
1766                         if ( c->coded_frame && c->coded_frame->pts != AV_NOPTS_VALUE )
1767                                 pkt.pts = av_rescale_q( c->coded_frame->pts, c->time_base, audio_st[0]->time_base );
1768                         pkt.flags |= PKT_FLAG_KEY;
1769                         pkt.stream_index = audio_st[0]->index;
1770                         pkt.data = audio_outbuf;
1771                         if ( av_interleaved_write_frame( oc, &pkt ) != 0 )
1772                         {
1773                                 mlt_log_fatal( MLT_CONSUMER_SERVICE( consumer ), "error writing flushed audio frame\n" );
1774                                 mlt_events_fire( properties, "consumer-fatal-error", NULL );
1775                                 goto on_fatal_error;
1776                         }
1777                 }
1778
1779                 // Flush video
1780                 if ( video_st && !( oc->oformat->flags & AVFMT_RAWPICTURE ) ) for (;;)
1781                 {
1782                         AVCodecContext *c = video_st->codec;
1783                         AVPacket pkt;
1784                         av_init_packet( &pkt );
1785
1786                         // Encode the image
1787                         pkt.size = avcodec_encode_video( c, video_outbuf, video_outbuf_size, NULL );
1788                         mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), "flushing video size %d\n", pkt.size );
1789                         if ( pkt.size <= 0 )
1790                                 break;
1791
1792                         if ( c->coded_frame && c->coded_frame->pts != AV_NOPTS_VALUE )
1793                                 pkt.pts= av_rescale_q( c->coded_frame->pts, c->time_base, video_st->time_base );
1794                         if( c->coded_frame && c->coded_frame->key_frame )
1795                                 pkt.flags |= PKT_FLAG_KEY;
1796                         pkt.stream_index = video_st->index;
1797                         pkt.data = video_outbuf;
1798
1799                         // write the compressed frame in the media file
1800                         if ( av_interleaved_write_frame( oc, &pkt ) != 0 )
1801                         {
1802                                 mlt_log_fatal( MLT_CONSUMER_SERVICE(consumer), "error writing flushed video frame\n" );
1803                                 mlt_events_fire( properties, "consumer-fatal-error", NULL );
1804                                 goto on_fatal_error;
1805                         }
1806                         // Dual pass logging
1807                         if ( mlt_properties_get_data( properties, "_logfile", NULL ) && c->stats_out )
1808                                 fprintf( mlt_properties_get_data( properties, "_logfile", NULL ), "%s", c->stats_out );
1809                 }
1810         }
1811
1812 on_fatal_error:
1813
1814         // Write the trailer, if any
1815         av_write_trailer( oc );
1816
1817         // close each codec
1818         if ( video_st )
1819                 close_video(oc, video_st);
1820         for ( i = 0; i < MAX_AUDIO_STREAMS && audio_st[i]; i++ )
1821                 close_audio( oc, audio_st[i] );
1822
1823         // Free the streams
1824         for ( i = 0; i < oc->nb_streams; i++ )
1825                 av_freep( &oc->streams[i] );
1826
1827         // Close the output file
1828         if ( !( fmt->flags & AVFMT_NOFILE ) )
1829         {
1830 #if LIBAVFORMAT_VERSION_MAJOR >= 53
1831                 if ( !mlt_properties_get_int( properties, "redirect" ) )
1832                         avio_close( oc->pb );
1833 #elif LIBAVFORMAT_VERSION_MAJOR >= 52
1834                 url_fclose( oc->pb );
1835 #else
1836                 url_fclose( &oc->pb );
1837 #endif
1838         }
1839
1840         // Clean up input and output frames
1841         if ( output )
1842                 av_free( output->data[0] );
1843         av_free( output );
1844         av_free( input->data[0] );
1845         av_free( input );
1846         av_free( video_outbuf );
1847         av_free( audio_buf_1 );
1848         av_free( audio_buf_2 );
1849
1850         // Free the stream
1851         av_free( oc );
1852
1853         // Just in case we terminated on pause
1854         mlt_properties_set_int( properties, "running", 0 );
1855
1856         mlt_consumer_stopped( consumer );
1857         mlt_properties_close( frame_meta_properties );
1858
1859         if ( mlt_properties_get_int( properties, "pass" ) > 1 )
1860         {
1861                 // Remove the dual pass log file
1862                 if ( mlt_properties_get( properties, "_logfilename" ) )
1863                         remove( mlt_properties_get( properties, "_logfilename" ) );
1864
1865                 // Remove the x264 dual pass logs
1866                 char *cwd = getcwd( NULL, 0 );
1867                 const char *file = "x264_2pass.log";
1868                 char *full = malloc( strlen( cwd ) + strlen( file ) + 2 );
1869                 sprintf( full, "%s/%s", cwd, file );
1870                 remove( full );
1871                 free( full );
1872                 file = "x264_2pass.log.temp";
1873                 full = malloc( strlen( cwd ) + strlen( file ) + 2 );
1874                 sprintf( full, "%s/%s", cwd, file );
1875                 remove( full );
1876                 free( full );
1877                 file = "x264_2pass.log.mbtree";
1878                 full = malloc( strlen( cwd ) + strlen( file ) + 2 );
1879                 sprintf( full, "%s/%s", cwd, file );
1880                 remove( full );
1881                 free( full );
1882                 free( cwd );
1883                 remove( "x264_2pass.log.temp" );
1884         }
1885
1886         while ( ( frame = mlt_deque_pop_back( queue ) ) )
1887                 mlt_frame_close( frame );
1888
1889         return NULL;
1890 }
1891
1892 /** Close the consumer.
1893 */
1894
1895 static void consumer_close( mlt_consumer consumer )
1896 {
1897         // Stop the consumer
1898         mlt_consumer_stop( consumer );
1899
1900         // Close the parent
1901         mlt_consumer_close( consumer );
1902
1903         // Free the memory
1904         free( consumer );
1905 }