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

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