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