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) 2003-2012 Ushodaya Enterprises Limited
   4  * Author: Charles Yates <charles.yates@pandora.be>
   5  * Author: Dan Dennedy <dan@dennedy.org>
   6  * Much code borrowed from ffmpeg.c: Copyright (c) 2000-2003 Fabrice Bellard
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  */
  22
  23 // mlt Header files
  24 #include <framework/mlt_consumer.h>
  25 #include <framework/mlt_frame.h>
  26 #include <framework/mlt_profile.h>
  27 #include <framework/mlt_log.h>
  28 #include <framework/mlt_events.h>
  29
  30 // System header files
  31 #include <stdio.h>
  32 #include <stdlib.h>
  33 #include <string.h>
  34 #include <limits.h>
  35 #include <pthread.h>
  36 #include <sys/time.h>
  37 #include <unistd.h>
  38
  39 // avformat header files
  40 #include <libavformat/avformat.h>
  41 #include <libavformat/avio.h>
  42 #ifdef SWSCALE
  43 #include <libswscale/swscale.h>
  44 #endif
  45 #if LIBAVUTIL_VERSION_INT >= ((50<<16)+(8<<8)+0)
  46 #include <libavutil/pixdesc.h>
  47 #endif
  48 #include <libavutil/mathematics.h>
  49
  50 #if LIBAVUTIL_VERSION_INT >= ((50<<16)+(38<<8)+0)
  51 #  include <libavutil/samplefmt.h>
  52 #else
  53 #  define AV_SAMPLE_FMT_NONE SAMPLE_FMT_NONE
  54 #  define AV_SAMPLE_FMT_S16 SAMPLE_FMT_S16
  55 #  define AV_SAMPLE_FMT_S32 SAMPLE_FMT_S32
  56 #  define AV_SAMPLE_FMT_FLT SAMPLE_FMT_FLT
  57 #endif
  58
  59 #if LIBAVUTIL_VERSION_INT < (50<<16)
  60 #define PIX_FMT_RGB32 PIX_FMT_RGBA32
  61 #define PIX_FMT_YUYV422 PIX_FMT_YUV422
  62 #endif
  63
  64 #if LIBAVCODEC_VERSION_MAJOR >= 53
  65 #include <libavutil/opt.h>
  66 #define CODEC_TYPE_VIDEO      AVMEDIA_TYPE_VIDEO
  67 #define CODEC_TYPE_AUDIO      AVMEDIA_TYPE_AUDIO
  68 #define PKT_FLAG_KEY AV_PKT_FLAG_KEY
  69 #else
  70 #include <libavcodec/opt.h>
  71 #endif
  72
  73 #define MAX_AUDIO_STREAMS (8)
  74 #define AUDIO_ENCODE_BUFFER_SIZE (48000 * 2 * MAX_AUDIO_STREAMS)
  75 #define AUDIO_BUFFER_SIZE (1024 * 42)
  76 #define VIDEO_BUFFER_SIZE (2048 * 1024)
  77
  78 //
  79 // This structure should be extended and made globally available in mlt
  80 //
  81
  82 typedef struct
  83 {
  84         uint8_t *buffer;
  85         int size;
  86         int used;
  87         double time;
  88         int frequency;
  89         int channels;
  90 }
  91 *sample_fifo, sample_fifo_s;
  92
  93 sample_fifo sample_fifo_init( int frequency, int channels )
  94 {
  95         sample_fifo fifo = calloc( 1, sizeof( sample_fifo_s ) );
  96         fifo->frequency = frequency;
  97         fifo->channels = channels;
  98         return fifo;
  99 }
 100
 101 // count is the number of samples multiplied by the number of bytes per sample
 102 void sample_fifo_append( sample_fifo fifo, uint8_t *samples, int count )
 103 {
 104         if ( ( fifo->size - fifo->used ) < count )
 105         {
 106                 fifo->size += count * 5;
 107                 fifo->buffer = realloc( fifo->buffer, fifo->size );
 108         }
 109
 110         memcpy( &fifo->buffer[ fifo->used ], samples, count );
 111         fifo->used += count;
 112 }
 113
 114 int sample_fifo_used( sample_fifo fifo )
 115 {
 116         return fifo->used;
 117 }
 118
 119 int sample_fifo_fetch( sample_fifo fifo, uint8_t *samples, int count )
 120 {
 121         if ( count > fifo->used )
 122                 count = fifo->used;
 123
 124         memcpy( samples, fifo->buffer, count );
 125         fifo->used -= count;
 126         memmove( fifo->buffer, &fifo->buffer[ count ], fifo->used );
 127
 128         fifo->time += ( double )count / fifo->channels / fifo->frequency;
 129
 130         return count;
 131 }
 132
 133 void sample_fifo_close( sample_fifo fifo )
 134 {
 135         free( fifo->buffer );
 136         free( fifo );
 137 }
 138
 139 // Forward references.
 140 static int consumer_start( mlt_consumer consumer );
 141 static int consumer_stop( mlt_consumer consumer );
 142 static int consumer_is_stopped( mlt_consumer consumer );
 143 static void *consumer_thread( void *arg );
 144 static void consumer_close( mlt_consumer consumer );
 145
 146 /** Initialise the consumer.
 147 */
 148
 149 mlt_consumer consumer_avformat_init( mlt_profile profile, char *arg )
 150 {
 151         // Allocate the consumer
 152         mlt_consumer consumer = mlt_consumer_new( profile );
 153
 154         // If memory allocated and initialises without error
 155         if ( consumer != NULL )
 156         {
 157                 // Get properties from the consumer
 158                 mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 159
 160                 // Assign close callback
 161                 consumer->close = consumer_close;
 162
 163                 // Interpret the argument
 164                 if ( arg != NULL )
 165                         mlt_properties_set( properties, "target", arg );
 166
 167                 // sample and frame queue
 168                 mlt_properties_set_data( properties, "frame_queue", mlt_deque_init( ), 0, ( mlt_destructor )mlt_deque_close, NULL );
 169
 170                 // Audio options not fully handled by AVOptions
 171 #define QSCALE_NONE (-99999)
 172                 mlt_properties_set_int( properties, "aq", QSCALE_NONE );
 173
 174                 // Video options not fully handled by AVOptions
 175                 mlt_properties_set_int( properties, "dc", 8 );
 176
 177                 // Muxer options not fully handled by AVOptions
 178                 mlt_properties_set_double( properties, "muxdelay", 0.7 );
 179                 mlt_properties_set_double( properties, "muxpreload", 0.5 );
 180
 181                 // Ensure termination at end of the stream
 182                 mlt_properties_set_int( properties, "terminate_on_pause", 1 );
 183
 184                 // Default to separate processing threads for producer and consumer with no frame dropping!
 185                 mlt_properties_set_int( properties, "real_time", -1 );
 186                 mlt_properties_set_int( properties, "prefill", 1 );
 187
 188                 // Set up start/stop/terminated callbacks
 189                 consumer->start = consumer_start;
 190                 consumer->stop = consumer_stop;
 191                 consumer->is_stopped = consumer_is_stopped;
 192
 193                 mlt_events_register( properties, "consumer-fatal-error", NULL );
 194         }
 195
 196         // Return consumer
 197         return consumer;
 198 }
 199
 200 /** Start the consumer.
 201 */
 202
 203 static int consumer_start( mlt_consumer consumer )
 204 {
 205         // Get the properties
 206         mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 207         int error = 0;
 208
 209         // Report information about available muxers and codecs as YAML Tiny
 210         char *s = mlt_properties_get( properties, "f" );
 211         if ( s && strcmp( s, "list" ) == 0 )
 212         {
 213                 mlt_properties doc = mlt_properties_new();
 214                 mlt_properties formats = mlt_properties_new();
 215                 char key[20];
 216                 AVOutputFormat *format = NULL;
 217
 218                 mlt_properties_set_data( properties, "f", formats, 0, (mlt_destructor) mlt_properties_close, NULL );
 219                 mlt_properties_set_data( doc, "formats", formats, 0, NULL, NULL );
 220                 while ( ( format = av_oformat_next( format ) ) )
 221                 {
 222                         snprintf( key, sizeof(key), "%d", mlt_properties_count( formats ) );
 223                         mlt_properties_set( formats, key, format->name );
 224                 }
 225                 fprintf( stdout, "%s", mlt_properties_serialise_yaml( doc ) );
 226                 mlt_properties_close( doc );
 227                 error = 1;
 228         }
 229         s = mlt_properties_get( properties, "acodec" );
 230         if ( s && strcmp( s, "list" ) == 0 )
 231         {
 232                 mlt_properties doc = mlt_properties_new();
 233                 mlt_properties codecs = mlt_properties_new();
 234                 char key[20];
 235                 AVCodec *codec = NULL;
 236
 237                 mlt_properties_set_data( properties, "acodec", codecs, 0, (mlt_destructor) mlt_properties_close, NULL );
 238                 mlt_properties_set_data( doc, "audio_codecs", codecs, 0, NULL, NULL );
 239                 while ( ( codec = av_codec_next( codec ) ) )
 240 #if (defined(FFUDIV) && LIBAVCODEC_VERSION_INT >= ((54<<16)+(56<<8)+100)) || (LIBAVCODEC_VERSION_INT >= ((54<<16)+(27<<8)+0))
 241                         if ( codec->encode2 && codec->type == CODEC_TYPE_AUDIO )
 242 #elif LIBAVCODEC_VERSION_INT >= ((54<<16)+(0<<8)+0)
 243                         if ( ( codec->encode || codec->encode2 ) && codec->type == CODEC_TYPE_AUDIO )
 244 #else
 245                         if ( codec->encode && codec->type == CODEC_TYPE_AUDIO )
 246 #endif
 247                         {
 248                                 snprintf( key, sizeof(key), "%d", mlt_properties_count( codecs ) );
 249                                 mlt_properties_set( codecs, key, codec->name );
 250                         }
 251                 fprintf( stdout, "%s", mlt_properties_serialise_yaml( doc ) );
 252                 mlt_properties_close( doc );
 253                 error = 1;
 254         }
 255         s = mlt_properties_get( properties, "vcodec" );
 256         if ( s && strcmp( s, "list" ) == 0 )
 257         {
 258                 mlt_properties doc = mlt_properties_new();
 259                 mlt_properties codecs = mlt_properties_new();
 260                 char key[20];
 261                 AVCodec *codec = NULL;
 262
 263                 mlt_properties_set_data( properties, "vcodec", codecs, 0, (mlt_destructor) mlt_properties_close, NULL );
 264                 mlt_properties_set_data( doc, "video_codecs", codecs, 0, NULL, NULL );
 265                 while ( ( codec = av_codec_next( codec ) ) )
 266 #if (defined(FFUDIV) && LIBAVCODEC_VERSION_INT >= ((54<<16)+(56<<8)+100)) || (LIBAVCODEC_VERSION_INT >= ((54<<16)+(27<<8)+0))
 267                         if ( codec->encode2 && codec->type == CODEC_TYPE_VIDEO )
 268 #elif LIBAVCODEC_VERSION_INT >= ((54<<16)+(0<<8)+0)
 269                         if ( (codec->encode || codec->encode2) && codec->type == CODEC_TYPE_VIDEO )
 270 #else
 271                         if ( codec->encode && codec->type == CODEC_TYPE_VIDEO )
 272 #endif
 273                         {
 274                                 snprintf( key, sizeof(key), "%d", mlt_properties_count( codecs ) );
 275                                 mlt_properties_set( codecs, key, codec->name );
 276                         }
 277                 fprintf( stdout, "%s", mlt_properties_serialise_yaml( doc ) );
 278                 mlt_properties_close( doc );
 279                 error = 1;
 280         }
 281
 282         // Check that we're not already running
 283         if ( !error && !mlt_properties_get_int( properties, "running" ) )
 284         {
 285                 // Allocate a thread
 286                 pthread_t *thread = calloc( 1, sizeof( pthread_t ) );
 287
 288                 // Get the width and height
 289                 int width = mlt_properties_get_int( properties, "width" );
 290                 int height = mlt_properties_get_int( properties, "height" );
 291
 292                 // Obtain the size property
 293                 char *size = mlt_properties_get( properties, "s" );
 294
 295                 // Interpret it
 296                 if ( size != NULL )
 297                 {
 298                         int tw, th;
 299                         if ( sscanf( size, "%dx%d", &tw, &th ) == 2 && tw > 0 && th > 0 )
 300                         {
 301                                 width = tw;
 302                                 height = th;
 303                         }
 304                         else
 305                         {
 306                                 mlt_log_warning( MLT_CONSUMER_SERVICE( consumer ), "Invalid size property %s - ignoring.\n", size );
 307                         }
 308                 }
 309
 310                 // Now ensure we honour the multiple of two requested by libavformat
 311                 width = ( width / 2 ) * 2;
 312                 height = ( height / 2 ) * 2;
 313                 mlt_properties_set_int( properties, "width", width );
 314                 mlt_properties_set_int( properties, "height", height );
 315
 316                 // We need to set these on the profile as well because the s property is
 317                 // an alias to mlt properties that correspond to profile settings.
 318                 mlt_profile profile = mlt_service_profile( MLT_CONSUMER_SERVICE( consumer ) );
 319                 if ( profile )
 320                 {
 321                         profile->width = width;
 322                         profile->height = height;
 323                 }
 324
 325                 // Handle the ffmpeg command line "-r" property for frame rate
 326                 if ( mlt_properties_get( properties, "r" ) )
 327                 {
 328                         double frame_rate = mlt_properties_get_double( properties, "r" );
 329                         AVRational rational = av_d2q( frame_rate, 255 );
 330                         mlt_properties_set_int( properties, "frame_rate_num", rational.num );
 331                         mlt_properties_set_int( properties, "frame_rate_den", rational.den );
 332                         if ( profile )
 333                         {
 334                                 profile->frame_rate_num = rational.num;
 335                                 profile->frame_rate_den = rational.den;
 336                                 mlt_properties_set_double( properties, "fps", mlt_profile_fps( profile ) );
 337                         }
 338                 }
 339
 340                 // Apply AVOptions that are synonyms for standard mlt_consumer options
 341                 if ( mlt_properties_get( properties, "ac" ) )
 342                         mlt_properties_set_int( properties, "channels", mlt_properties_get_int( properties, "ac" ) );
 343                 if ( mlt_properties_get( properties, "ar" ) )
 344                         mlt_properties_set_int( properties, "frequency", mlt_properties_get_int( properties, "ar" ) );
 345
 346                 // Assign the thread to properties
 347                 mlt_properties_set_data( properties, "thread", thread, sizeof( pthread_t ), free, NULL );
 348
 349                 // Create the thread
 350                 pthread_create( thread, NULL, consumer_thread, consumer );
 351
 352                 // Set the running state
 353                 mlt_properties_set_int( properties, "running", 1 );
 354         }
 355         return error;
 356 }
 357
 358 /** Stop the consumer.
 359 */
 360
 361 static int consumer_stop( mlt_consumer consumer )
 362 {
 363         // Get the properties
 364         mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 365         pthread_t *thread = mlt_properties_get_data( properties, "thread", NULL );
 366
 367         // Check that we're running
 368         if ( thread )
 369         {
 370                 // Stop the thread
 371                 mlt_properties_set_int( properties, "running", 0 );
 372
 373                 // Wait for termination
 374                 pthread_join( *thread, NULL );
 375
 376                 mlt_properties_set_data( properties, "thread", NULL, 0, NULL, NULL );
 377         }
 378
 379         return 0;
 380 }
 381
 382 /** Determine if the consumer is stopped.
 383 */
 384
 385 static int consumer_is_stopped( mlt_consumer consumer )
 386 {
 387         // Get the properties
 388         mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 389         return !mlt_properties_get_int( properties, "running" );
 390 }
 391
 392 /** Process properties as AVOptions and apply to AV context obj
 393 */
 394
 395 static void apply_properties( void *obj, mlt_properties properties, int flags )
 396 {
 397         int i;
 398         int count = mlt_properties_count( properties );
 399 #if LIBAVUTIL_VERSION_INT < ((51<<16)+(12<<8)+0)
 400         int alloc = 1;
 401 #endif
 402
 403         for ( i = 0; i < count; i++ )
 404         {
 405                 const char *opt_name = mlt_properties_get_name( properties, i );
 406 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(10<<8)+0)
 407                 const AVOption *opt = av_opt_find( obj, opt_name, NULL, flags, flags );
 408 #else
 409                 const AVOption *opt = av_find_opt( obj, opt_name, NULL, flags, flags );
 410 #endif
 411
 412                 // If option not found, see if it was prefixed with a or v (-vb)
 413                 if ( !opt && (
 414                         ( opt_name[0] == 'v' && ( flags & AV_OPT_FLAG_VIDEO_PARAM ) ) ||
 415                         ( opt_name[0] == 'a' && ( flags & AV_OPT_FLAG_AUDIO_PARAM ) ) ) )
 416 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(10<<8)+0)
 417                         opt = av_opt_find( obj, ++opt_name, NULL, flags, flags );
 418 #else
 419                         opt = av_find_opt( obj, ++opt_name, NULL, flags, flags );
 420 #endif
 421                 // Apply option if found
 422                 if ( opt )
 423 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(12<<8)+0)
 424                         av_opt_set( obj, opt_name, mlt_properties_get_value( properties, i), 0 );
 425 #elif LIBAVCODEC_VERSION_INT >= ((52<<16)+(7<<8)+0)
 426                         av_set_string3( obj, opt_name, mlt_properties_get_value( properties, i), alloc, NULL );
 427 #elif LIBAVCODEC_VERSION_INT >= ((51<<16)+(59<<8)+0)
 428                         av_set_string2( obj, opt_name, mlt_properties_get_value( properties, i), alloc );
 429 #else
 430                         av_set_string( obj, opt_name, mlt_properties_get_value( properties, i) );
 431 #endif
 432         }
 433 }
 434
 435 static int get_mlt_audio_format( int av_sample_fmt )
 436 {
 437         switch ( av_sample_fmt )
 438         {
 439         case AV_SAMPLE_FMT_S32:
 440                 return mlt_audio_s32le;
 441         case AV_SAMPLE_FMT_FLT:
 442                 return mlt_audio_f32le;
 443 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(17<<8)+0)
 444         case AV_SAMPLE_FMT_S32P:
 445                 return mlt_audio_s32;
 446         case AV_SAMPLE_FMT_FLTP:
 447                 return mlt_audio_float;
 448 #endif
 449         default:
 450                 return mlt_audio_s16;
 451         }
 452 }
 453
 454 static int pick_sample_fmt( mlt_properties properties, AVCodec *codec )
 455 {
 456         int sample_fmt = AV_SAMPLE_FMT_S16;
 457         const char *format = mlt_properties_get( properties, "mlt_audio_format" );
 458         const int *p = codec->sample_fmts;
 459
 460         // get default av_sample_fmt from mlt_audio_format
 461         if ( format )
 462         {
 463                 if ( !strcmp( format, "s32le" ) )
 464                         sample_fmt = AV_SAMPLE_FMT_S32;
 465                 else if ( !strcmp( format, "f32le" ) )
 466                         sample_fmt = AV_SAMPLE_FMT_FLT;
 467 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(17<<8)+0)
 468                 else if ( !strcmp( format, "s32" ) )
 469                         sample_fmt = AV_SAMPLE_FMT_S32P;
 470                 else if ( !strcmp( format, "float" ) )
 471                         sample_fmt = AV_SAMPLE_FMT_FLTP;
 472 #endif
 473         }
 474         // check if codec supports our mlt_audio_format
 475         for ( ; *p != -1; p++ )
 476         {
 477                 if ( *p == sample_fmt )
 478                         return sample_fmt;
 479         }
 480         // no match - pick first one we support
 481         for ( p = codec->sample_fmts; *p != -1; p++ )
 482         {
 483                 switch (*p)
 484                 {
 485                 case AV_SAMPLE_FMT_S16:
 486                 case AV_SAMPLE_FMT_S32:
 487                 case AV_SAMPLE_FMT_FLT:
 488 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(17<<8)+0)
 489                 case AV_SAMPLE_FMT_S32P:
 490                 case AV_SAMPLE_FMT_FLTP:
 491 #endif
 492                         return *p;
 493                 default:
 494                         break;
 495                 }
 496         }
 497         mlt_log_error( properties, "audio codec sample_fmt not compatible" );
 498
 499         return AV_SAMPLE_FMT_NONE;
 500 }
 501
 502 /** Add an audio output stream
 503 */
 504
 505 static AVStream *add_audio_stream( mlt_consumer consumer, AVFormatContext *oc, AVCodec *codec, int channels )
 506 {
 507         // Get the properties
 508         mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 509
 510         // Create a new stream
 511 #if LIBAVFORMAT_VERSION_INT >= ((53<<16)+(10<<8)+0)
 512         AVStream *st = avformat_new_stream( oc, codec );
 513 #else
 514         AVStream *st = av_new_stream( oc, oc->nb_streams );
 515 #endif
 516
 517         // If created, then initialise from properties
 518         if ( st != NULL )
 519         {
 520                 AVCodecContext *c = st->codec;
 521
 522                 // Establish defaults from AVOptions
 523 #if LIBAVCODEC_VERSION_MAJOR >= 53
 524                 avcodec_get_context_defaults3( c, codec );
 525 #else
 526                 avcodec_get_context_defaults2( c, CODEC_TYPE_AUDIO );
 527 #endif
 528
 529                 c->codec_id = codec->id;
 530                 c->codec_type = CODEC_TYPE_AUDIO;
 531                 c->sample_fmt = pick_sample_fmt( properties, codec );
 532
 533 #if 0 // disabled until some audio codecs are multi-threaded
 534                 // Setup multi-threading
 535                 int thread_count = mlt_properties_get_int( properties, "threads" );
 536                 if ( thread_count == 0 && getenv( "MLT_AVFORMAT_THREADS" ) )
 537                         thread_count = atoi( getenv( "MLT_AVFORMAT_THREADS" ) );
 538                 if ( thread_count > 1 )
 539                         c->thread_count = thread_count;
 540 #endif
 541
 542                 if (oc->oformat->flags & AVFMT_GLOBALHEADER)
 543                         c->flags |= CODEC_FLAG_GLOBAL_HEADER;
 544
 545                 // Allow the user to override the audio fourcc
 546                 if ( mlt_properties_get( properties, "atag" ) )
 547                 {
 548                         char *tail = NULL;
 549                         char *arg = mlt_properties_get( properties, "atag" );
 550                         int tag = strtol( arg, &tail, 0);
 551                         if( !tail || *tail )
 552                                 tag = arg[ 0 ] + ( arg[ 1 ] << 8 ) + ( arg[ 2 ] << 16 ) + ( arg[ 3 ] << 24 );
 553                         c->codec_tag = tag;
 554                 }
 555
 556                 // Process properties as AVOptions
 557                 char *apre = mlt_properties_get( properties, "apre" );
 558                 if ( apre )
 559                 {
 560                         mlt_properties p = mlt_properties_load( apre );
 561                         apply_properties( c, p, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM );
 562                         mlt_properties_close( p );
 563                 }
 564                 apply_properties( c, properties, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM );
 565
 566                 int audio_qscale = mlt_properties_get_int( properties, "aq" );
 567         if ( audio_qscale > QSCALE_NONE )
 568                 {
 569                         c->flags |= CODEC_FLAG_QSCALE;
 570                         c->global_quality = FF_QP2LAMBDA * audio_qscale;
 571 #if LIBAVFORMAT_VERSION_MAJOR < 53
 572                         st->quality = c->global_quality;
 573 #endif
 574                 }
 575
 576                 // Set parameters controlled by MLT
 577                 c->sample_rate = mlt_properties_get_int( properties, "frequency" );
 578                 c->time_base = ( AVRational ){ 1, c->sample_rate };
 579                 c->channels = channels;
 580
 581                 if ( mlt_properties_get( properties, "alang" ) != NULL )
 582 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(43<<8)+0)
 583 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(8<<8)+0)
 584                         av_dict_set( &oc->metadata, "language", mlt_properties_get( properties, "alang" ), 0 );
 585 #else
 586                         av_metadata_set2( &oc->metadata, "language", mlt_properties_get( properties, "alang" ), 0 );
 587 #endif
 588 #else
 589
 590                         strncpy( st->language, mlt_properties_get( properties, "alang" ), sizeof( st->language ) );
 591 #endif
 592         }
 593         else
 594         {
 595                 mlt_log_error( MLT_CONSUMER_SERVICE( consumer ), "Could not allocate a stream for audio\n" );
 596         }
 597
 598         return st;
 599 }
 600
 601 static int open_audio( mlt_properties properties, AVFormatContext *oc, AVStream *st, int audio_outbuf_size, const char *codec_name )
 602 {
 603         // We will return the audio input size from here
 604         int audio_input_frame_size = 0;
 605
 606         // Get the context
 607         AVCodecContext *c = st->codec;
 608
 609         // Find the encoder
 610         AVCodec *codec;
 611         if ( codec_name )
 612                 codec = avcodec_find_encoder_by_name( codec_name );
 613         else
 614                 codec = avcodec_find_encoder( c->codec_id );
 615
 616 #if LIBAVCODEC_VERSION_INT >= ((52<<16)+(122<<8)+0)
 617         // Process properties as AVOptions on the AVCodec
 618         if ( codec && codec->priv_class )
 619         {
 620                 char *apre = mlt_properties_get( properties, "apre" );
 621                 if ( !c->priv_data && codec->priv_data_size )
 622                 {
 623                         c->priv_data = av_mallocz( codec->priv_data_size );
 624                         *(const AVClass **) c->priv_data = codec->priv_class;
 625 //                      av_opt_set_defaults( c );
 626                 }
 627                 if ( apre )
 628                 {
 629                         mlt_properties p = mlt_properties_load( apre );
 630                         apply_properties( c->priv_data, p, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM );
 631                         mlt_properties_close( p );
 632                 }
 633                 apply_properties( c->priv_data, properties, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM );
 634         }
 635 #endif
 636
 637         // Continue if codec found and we can open it
 638 #if LIBAVCODEC_VERSION_INT >= ((53<<16)+(8<<8)+0)
 639         if ( codec && avcodec_open2( c, codec, NULL ) >= 0 )
 640 #else
 641         if ( codec && avcodec_open( c, codec ) >= 0 )
 642 #endif
 643         {
 644                 // ugly hack for PCM codecs (will be removed ASAP with new PCM
 645                 // support to compute the input frame size in samples
 646                 if ( c->frame_size <= 1 )
 647                 {
 648                         audio_input_frame_size = audio_outbuf_size / c->channels;
 649                         switch(st->codec->codec_id)
 650                         {
 651                                 case CODEC_ID_PCM_S16LE:
 652                                 case CODEC_ID_PCM_S16BE:
 653                                 case CODEC_ID_PCM_U16LE:
 654                                 case CODEC_ID_PCM_U16BE:
 655                                         audio_input_frame_size >>= 1;
 656                                         break;
 657                                 default:
 658                                         break;
 659                         }
 660                 }
 661                 else
 662                 {
 663                         audio_input_frame_size = c->frame_size;
 664                 }
 665
 666                 // Some formats want stream headers to be seperate (hmm)
 667                 if ( !strcmp( oc->oformat->name, "mp4" ) ||
 668                          !strcmp( oc->oformat->name, "mov" ) ||
 669                          !strcmp( oc->oformat->name, "3gp" ) )
 670                         c->flags |= CODEC_FLAG_GLOBAL_HEADER;
 671         }
 672         else
 673         {
 674                 mlt_log_warning( NULL, "%s: Unable to encode audio - disabling audio output.\n", __FILE__ );
 675                 audio_input_frame_size = 0;
 676         }
 677
 678         return audio_input_frame_size;
 679 }
 680
 681 static void close_audio( AVFormatContext *oc, AVStream *st )
 682 {
 683         if ( st && st->codec )
 684                 avcodec_close( st->codec );
 685 }
 686
 687 /** Add a video output stream
 688 */
 689
 690 static AVStream *add_video_stream( mlt_consumer consumer, AVFormatContext *oc, AVCodec *codec )
 691 {
 692         // Get the properties
 693         mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 694
 695         // Create a new stream
 696 #if LIBAVFORMAT_VERSION_INT >= ((53<<16)+(10<<8)+0)
 697         AVStream *st = avformat_new_stream( oc, codec );
 698 #else
 699         AVStream *st = av_new_stream( oc, oc->nb_streams );
 700 #endif
 701
 702         if ( st != NULL )
 703         {
 704                 char *pix_fmt = mlt_properties_get( properties, "pix_fmt" );
 705                 AVCodecContext *c = st->codec;
 706
 707                 // Establish defaults from AVOptions
 708 #if LIBAVCODEC_VERSION_MAJOR >= 53
 709                 avcodec_get_context_defaults3( c, codec );
 710 #else
 711                 avcodec_get_context_defaults2( c, CODEC_TYPE_VIDEO );
 712 #endif
 713
 714                 c->codec_id = codec->id;
 715                 c->codec_type = CODEC_TYPE_VIDEO;
 716
 717                 // Setup multi-threading
 718                 int thread_count = mlt_properties_get_int( properties, "threads" );
 719                 if ( thread_count == 0 && getenv( "MLT_AVFORMAT_THREADS" ) )
 720                         thread_count = atoi( getenv( "MLT_AVFORMAT_THREADS" ) );
 721                 if ( thread_count > 1 )
 722 #if LIBAVCODEC_VERSION_MAJOR >= 53
 723                         c->thread_count = thread_count;
 724 #else
 725                         avcodec_thread_init( c, thread_count );
 726 #endif
 727
 728                 // Process properties as AVOptions
 729                 char *vpre = mlt_properties_get( properties, "vpre" );
 730                 if ( vpre )
 731                 {
 732                         mlt_properties p = mlt_properties_load( vpre );
 733 #ifdef AVDATADIR
 734                         if ( mlt_properties_count( p ) < 1 )
 735                         {
 736                                 AVCodec *codec = avcodec_find_encoder( c->codec_id );
 737                                 if ( codec )
 738                                 {
 739                                         char *path = malloc( strlen(AVDATADIR) + strlen(codec->name) + strlen(vpre) + strlen(".ffpreset") + 2 );
 740                                         strcpy( path, AVDATADIR );
 741                                         strcat( path, codec->name );
 742                                         strcat( path, "-" );
 743                                         strcat( path, vpre );
 744                                         strcat( path, ".ffpreset" );
 745
 746                                         mlt_properties_close( p );
 747                                         p = mlt_properties_load( path );
 748                                         if ( mlt_properties_count( p ) > 0 )
 749                                                 mlt_properties_debug( p, path, stderr );
 750                                         free( path );
 751                                 }
 752                         }
 753                         else
 754                         {
 755                                 mlt_properties_debug( p, vpre, stderr );
 756                         }
 757 #endif
 758                         apply_properties( c, p, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM );
 759                         mlt_properties_close( p );
 760                 }
 761                 int colorspace = mlt_properties_get_int( properties, "colorspace" );
 762                 mlt_properties_set( properties, "colorspace", NULL );
 763                 apply_properties( c, properties, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM );
 764                 mlt_properties_set_int( properties, "colorspace", colorspace );
 765
 766                 // Set options controlled by MLT
 767                 c->width = mlt_properties_get_int( properties, "width" );
 768                 c->height = mlt_properties_get_int( properties, "height" );
 769                 c->time_base.num = mlt_properties_get_int( properties, "frame_rate_den" );
 770                 c->time_base.den = mlt_properties_get_int( properties, "frame_rate_num" );
 771                 if ( st->time_base.den == 0 )
 772                         st->time_base = c->time_base;
 773 #if LIBAVUTIL_VERSION_INT >= ((50<<16)+(8<<8)+0)
 774                 c->pix_fmt = pix_fmt ? av_get_pix_fmt( pix_fmt ) : PIX_FMT_YUV420P;
 775 #else
 776                 c->pix_fmt = pix_fmt ? avcodec_get_pix_fmt( pix_fmt ) : PIX_FMT_YUV420P;
 777 #endif
 778
 779 #if LIBAVCODEC_VERSION_INT > ((52<<16)+(28<<8)+0)
 780                 switch ( colorspace )
 781                 {
 782                 case 170:
 783                         c->colorspace = AVCOL_SPC_SMPTE170M;
 784                         break;
 785                 case 240:
 786                         c->colorspace = AVCOL_SPC_SMPTE240M;
 787                         break;
 788                 case 470:
 789                         c->colorspace = AVCOL_SPC_BT470BG;
 790                         break;
 791                 case 601:
 792                         c->colorspace = ( 576 % c->height ) ? AVCOL_SPC_SMPTE170M : AVCOL_SPC_BT470BG;
 793                         break;
 794                 case 709:
 795                         c->colorspace = AVCOL_SPC_BT709;
 796                         break;
 797                 }
 798 #endif
 799
 800                 if ( mlt_properties_get( properties, "aspect" ) )
 801                 {
 802                         // "-aspect" on ffmpeg command line is display aspect ratio
 803                         double ar = mlt_properties_get_double( properties, "aspect" );
 804                         AVRational rational = av_d2q( ar, 255 );
 805
 806                         // Update the profile and properties as well since this is an alias
 807                         // for mlt properties that correspond to profile settings
 808                         mlt_properties_set_int( properties, "display_aspect_num", rational.num );
 809                         mlt_properties_set_int( properties, "display_aspect_den", rational.den );
 810                         mlt_profile profile = mlt_service_profile( MLT_CONSUMER_SERVICE( consumer ) );
 811                         if ( profile )
 812                         {
 813                                 profile->display_aspect_num = rational.num;
 814                                 profile->display_aspect_den = rational.den;
 815                                 mlt_properties_set_double( properties, "display_ratio", mlt_profile_dar( profile ) );
 816                         }
 817
 818                         // Now compute the sample aspect ratio
 819                         rational = av_d2q( ar * c->height / c->width, 255 );
 820                         c->sample_aspect_ratio = rational;
 821                         // Update the profile and properties as well since this is an alias
 822                         // for mlt properties that correspond to profile settings
 823                         mlt_properties_set_int( properties, "sample_aspect_num", rational.num );
 824                         mlt_properties_set_int( properties, "sample_aspect_den", rational.den );
 825                         if ( profile )
 826                         {
 827                                 profile->sample_aspect_num = rational.num;
 828                                 profile->sample_aspect_den = rational.den;
 829                                 mlt_properties_set_double( properties, "aspect_ratio", mlt_profile_sar( profile ) );
 830                         }
 831                 }
 832                 else
 833                 {
 834                         c->sample_aspect_ratio.num = mlt_properties_get_int( properties, "sample_aspect_num" );
 835                         c->sample_aspect_ratio.den = mlt_properties_get_int( properties, "sample_aspect_den" );
 836                 }
 837 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(21<<8)+0)
 838                 st->sample_aspect_ratio = c->sample_aspect_ratio;
 839 #endif
 840
 841                 if ( mlt_properties_get_double( properties, "qscale" ) > 0 )
 842                 {
 843                         c->flags |= CODEC_FLAG_QSCALE;
 844                         c->global_quality = FF_QP2LAMBDA * mlt_properties_get_double( properties, "qscale" );
 845 #if LIBAVFORMAT_VERSION_MAJOR < 53
 846                         st->quality = c->global_quality;
 847 #endif
 848                 }
 849
 850                 // Allow the user to override the video fourcc
 851                 if ( mlt_properties_get( properties, "vtag" ) )
 852                 {
 853                         char *tail = NULL;
 854                         const char *arg = mlt_properties_get( properties, "vtag" );
 855                         int tag = strtol( arg, &tail, 0);
 856                         if( !tail || *tail )
 857                                 tag = arg[ 0 ] + ( arg[ 1 ] << 8 ) + ( arg[ 2 ] << 16 ) + ( arg[ 3 ] << 24 );
 858                         c->codec_tag = tag;
 859                 }
 860
 861                 // Some formats want stream headers to be seperate
 862                 if ( oc->oformat->flags & AVFMT_GLOBALHEADER )
 863                         c->flags |= CODEC_FLAG_GLOBAL_HEADER;
 864
 865                 // Translate these standard mlt consumer properties to ffmpeg
 866                 if ( mlt_properties_get_int( properties, "progressive" ) == 0 &&
 867                      mlt_properties_get_int( properties, "deinterlace" ) == 0 )
 868                 {
 869                         if ( ! mlt_properties_get( properties, "ildct" ) || mlt_properties_get_int( properties, "ildct" ) )
 870                                 c->flags |= CODEC_FLAG_INTERLACED_DCT;
 871                         if ( ! mlt_properties_get( properties, "ilme" ) || mlt_properties_get_int( properties, "ilme" ) )
 872                                 c->flags |= CODEC_FLAG_INTERLACED_ME;
 873                 }
 874
 875                 // parse the ratecontrol override string
 876                 int i;
 877                 char *rc_override = mlt_properties_get( properties, "rc_override" );
 878                 for ( i = 0; rc_override; i++ )
 879                 {
 880                         int start, end, q;
 881                         int e = sscanf( rc_override, "%d,%d,%d", &start, &end, &q );
 882                         if ( e != 3 )
 883                                 mlt_log_warning( MLT_CONSUMER_SERVICE( consumer ), "Error parsing rc_override\n" );
 884                         c->rc_override = av_realloc( c->rc_override, sizeof( RcOverride ) * ( i + 1 ) );
 885                         c->rc_override[i].start_frame = start;
 886                         c->rc_override[i].end_frame = end;
 887                         if ( q > 0 )
 888                         {
 889                                 c->rc_override[i].qscale = q;
 890                                 c->rc_override[i].quality_factor = 1.0;
 891                         }
 892                         else
 893                         {
 894                                 c->rc_override[i].qscale = 0;
 895                                 c->rc_override[i].quality_factor = -q / 100.0;
 896                         }
 897                         rc_override = strchr( rc_override, '/' );
 898                         if ( rc_override )
 899                                 rc_override++;
 900                 }
 901                 c->rc_override_count = i;
 902                 if ( !c->rc_initial_buffer_occupancy )
 903                         c->rc_initial_buffer_occupancy = c->rc_buffer_size * 3/4;
 904                 c->intra_dc_precision = mlt_properties_get_int( properties, "dc" ) - 8;
 905
 906                 // Setup dual-pass
 907                 i = mlt_properties_get_int( properties, "pass" );
 908                 if ( i == 1 )
 909                         c->flags |= CODEC_FLAG_PASS1;
 910                 else if ( i == 2 )
 911                         c->flags |= CODEC_FLAG_PASS2;
 912                 if ( codec->id != CODEC_ID_H264 && ( c->flags & ( CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2 ) ) )
 913                 {
 914                         char logfilename[1024];
 915                         FILE *f;
 916                         int size;
 917                         char *logbuffer;
 918
 919                         snprintf( logfilename, sizeof(logfilename), "%s_2pass.log",
 920                                 mlt_properties_get( properties, "passlogfile" ) ? mlt_properties_get( properties, "passlogfile" ) : mlt_properties_get( properties, "target" ) );
 921                         if ( c->flags & CODEC_FLAG_PASS1 )
 922                         {
 923                                 f = fopen( logfilename, "w" );
 924                                 if ( !f )
 925                                         perror( logfilename );
 926                                 else
 927                                         mlt_properties_set_data( properties, "_logfile", f, 0, ( mlt_destructor )fclose, NULL );
 928                         }
 929                         else
 930                         {
 931                                 /* read the log file */
 932                                 f = fopen( logfilename, "r" );
 933                                 if ( !f )
 934                                 {
 935                                         perror(logfilename);
 936                                 }
 937                                 else
 938                                 {
 939                                         mlt_properties_set( properties, "_logfilename", logfilename );
 940                                         fseek( f, 0, SEEK_END );
 941                                         size = ftell( f );
 942                                         fseek( f, 0, SEEK_SET );
 943                                         logbuffer = av_malloc( size + 1 );
 944                                         if ( !logbuffer )
 945                                                 mlt_log_fatal( MLT_CONSUMER_SERVICE( consumer ), "Could not allocate log buffer\n" );
 946                                         else
 947                                         {
 948                                                 if ( size >= 0 )
 949                                                 {
 950                                                         size = fread( logbuffer, 1, size, f );
 951                                                         logbuffer[size] = '\0';
 952                                                         c->stats_in = logbuffer;
 953                                                 }
 954                                         }
 955                                         fclose( f );
 956                                 }
 957                         }
 958                 }
 959         }
 960         else
 961         {
 962                 mlt_log_error( MLT_CONSUMER_SERVICE( consumer ), "Could not allocate a stream for video\n" );
 963         }
 964
 965         return st;
 966 }
 967
 968 static AVFrame *alloc_picture( int pix_fmt, int width, int height )
 969 {
 970         // Allocate a frame
 971         AVFrame *picture = avcodec_alloc_frame();
 972
 973         // Determine size of the
 974         int size = avpicture_get_size(pix_fmt, width, height);
 975
 976         // Allocate the picture buf
 977         uint8_t *picture_buf = av_malloc(size);
 978
 979         // If we have both, then fill the image
 980         if ( picture != NULL && picture_buf != NULL )
 981         {
 982                 // Fill the frame with the allocated buffer
 983                 avpicture_fill( (AVPicture *)picture, picture_buf, pix_fmt, width, height);
 984         }
 985         else
 986         {
 987                 // Something failed - clean up what we can
 988                 av_free( picture );
 989                 av_free( picture_buf );
 990                 picture = NULL;
 991         }
 992
 993         return picture;
 994 }
 995
 996 static int open_video( mlt_properties properties, AVFormatContext *oc, AVStream *st, const char *codec_name )
 997 {
 998         // Get the codec
 999         AVCodecContext *video_enc = st->codec;
1000
1001         // find the video encoder
1002         AVCodec *codec;
1003         if ( codec_name )
1004                 codec = avcodec_find_encoder_by_name( codec_name );
1005         else
1006                 codec = avcodec_find_encoder( video_enc->codec_id );
1007
1008 #if LIBAVCODEC_VERSION_INT >= ((52<<16)+(122<<8)+0)
1009         // Process properties as AVOptions on the AVCodec
1010         if ( codec && codec->priv_class )
1011         {
1012                 char *vpre = mlt_properties_get( properties, "vpre" );
1013                 if ( !video_enc->priv_data && codec->priv_data_size )
1014                 {
1015                         video_enc->priv_data = av_mallocz( codec->priv_data_size );
1016                         *(const AVClass **) video_enc->priv_data = codec->priv_class;
1017 //                      av_opt_set_defaults( video_enc );
1018                 }
1019                 if ( vpre )
1020                 {
1021                         mlt_properties p = mlt_properties_load( vpre );
1022                         apply_properties( video_enc->priv_data, p, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM );
1023                         mlt_properties_close( p );
1024                 }
1025                 apply_properties( video_enc->priv_data, properties, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM );
1026         }
1027 #endif
1028
1029         if( codec && codec->pix_fmts )
1030         {
1031                 const enum PixelFormat *p = codec->pix_fmts;
1032                 for( ; *p!=-1; p++ )
1033                 {
1034                         if( *p == video_enc->pix_fmt )
1035                                 break;
1036                 }
1037                 if( *p == -1 )
1038                         video_enc->pix_fmt = codec->pix_fmts[ 0 ];
1039         }
1040
1041 #if LIBAVCODEC_VERSION_INT >= ((53<<16)+(8<<8)+0)
1042         int result = codec && avcodec_open2( video_enc, codec, NULL ) >= 0;
1043 #else
1044         int result = codec && avcodec_open( video_enc, codec ) >= 0;
1045 #endif
1046
1047         return result;
1048 }
1049
1050 void close_video(AVFormatContext *oc, AVStream *st)
1051 {
1052         if ( st && st->codec )
1053         {
1054                 av_freep( &st->codec->stats_in );
1055                 avcodec_close(st->codec);
1056         }
1057 }
1058
1059 static inline long time_difference( struct timeval *time1 )
1060 {
1061         struct timeval time2;
1062         gettimeofday( &time2, NULL );
1063         return time2.tv_sec * 1000000 + time2.tv_usec - time1->tv_sec * 1000000 - time1->tv_usec;
1064 }
1065
1066 static int mlt_write(void *h, uint8_t *buf, int size)
1067 {
1068         mlt_properties properties = (mlt_properties) h;
1069         mlt_events_fire( properties, "avformat-write", buf, size, NULL );
1070         return 0;
1071 }
1072
1073 static void write_transmitter( mlt_listener listener, mlt_properties owner, mlt_service service, void **args )
1074 {
1075         listener( owner, service, (uint8_t*) args[0], (int) args[1] );
1076 }
1077
1078
1079 /** The main thread - the argument is simply the consumer.
1080 */
1081
1082 static void *consumer_thread( void *arg )
1083 {
1084         // Map the argument to the object
1085         mlt_consumer consumer = arg;
1086
1087         // Get the properties
1088         mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
1089
1090         // Get the terminate on pause property
1091         int terminate_on_pause = mlt_properties_get_int( properties, "terminate_on_pause" );
1092         int terminated = 0;
1093
1094         // Determine if feed is slow (for realtime stuff)
1095         int real_time_output = mlt_properties_get_int( properties, "real_time" );
1096
1097         // Time structures
1098         struct timeval ante;
1099
1100         // Get the frame rate
1101         double fps = mlt_properties_get_double( properties, "fps" );
1102
1103         // Get width and height
1104         int width = mlt_properties_get_int( properties, "width" );
1105         int height = mlt_properties_get_int( properties, "height" );
1106         int img_width = width;
1107         int img_height = height;
1108
1109         // Get default audio properties
1110         int channels = mlt_properties_get_int( properties, "channels" );
1111         int total_channels = channels;
1112         int frequency = mlt_properties_get_int( properties, "frequency" );
1113         void *pcm = NULL;
1114         int samples = 0;
1115
1116         // AVFormat audio buffer and frame size
1117         int audio_outbuf_size = AUDIO_BUFFER_SIZE;
1118         uint8_t *audio_outbuf = av_malloc( audio_outbuf_size );
1119         int audio_input_frame_size = 0;
1120
1121         // AVFormat video buffer and frame count
1122         int frame_count = 0;
1123         int video_outbuf_size = VIDEO_BUFFER_SIZE;
1124         uint8_t *video_outbuf = av_malloc( video_outbuf_size );
1125
1126         // Used for the frame properties
1127         mlt_frame frame = NULL;
1128         mlt_properties frame_properties = NULL;
1129
1130         // Get the queues
1131         mlt_deque queue = mlt_properties_get_data( properties, "frame_queue", NULL );
1132         sample_fifo fifo = mlt_properties_get_data( properties, "sample_fifo", NULL );
1133
1134         // Need two av pictures for converting
1135         AVFrame *output = NULL;
1136         AVFrame *input = alloc_picture( PIX_FMT_YUYV422, width, height );
1137
1138         // For receiving images from an mlt_frame
1139         uint8_t *image;
1140         mlt_image_format img_fmt = mlt_image_yuv422;
1141
1142         // For receiving audio samples back from the fifo
1143         uint8_t *audio_buf_1 = av_malloc( AUDIO_ENCODE_BUFFER_SIZE );
1144         uint8_t *audio_buf_2 = NULL;
1145         int count = 0;
1146
1147         // Allocate the context
1148 #if (LIBAVFORMAT_VERSION_INT >= ((52<<16)+(26<<8)+0))
1149         AVFormatContext *oc = avformat_alloc_context( );
1150 #else
1151         AVFormatContext *oc = av_alloc_format_context( );
1152 #endif
1153
1154         // Streams
1155         AVStream *video_st = NULL;
1156         AVStream *audio_st[ MAX_AUDIO_STREAMS ];
1157
1158         // Time stamps
1159         double audio_pts = 0;
1160         double video_pts = 0;
1161
1162         // Frames dispatched
1163         long int frames = 0;
1164         long int total_time = 0;
1165
1166         // Determine the format
1167         AVOutputFormat *fmt = NULL;
1168         const char *filename = mlt_properties_get( properties, "target" );
1169         char *format = mlt_properties_get( properties, "f" );
1170         char *vcodec = mlt_properties_get( properties, "vcodec" );
1171         char *acodec = mlt_properties_get( properties, "acodec" );
1172         AVCodec *audio_codec = NULL;
1173         AVCodec *video_codec = NULL;
1174
1175         // Used to store and override codec ids
1176         int audio_codec_id;
1177         int video_codec_id;
1178
1179         // Misc
1180         char key[27];
1181         mlt_properties frame_meta_properties = mlt_properties_new();
1182
1183         // Initialize audio_st
1184         int i = MAX_AUDIO_STREAMS;
1185         while ( i-- )
1186                 audio_st[i] = NULL;
1187
1188         // Check for user selected format first
1189         if ( format != NULL )
1190 #if LIBAVFORMAT_VERSION_INT < ((52<<16)+(45<<8)+0)
1191                 fmt = guess_format( format, NULL, NULL );
1192 #else
1193                 fmt = av_guess_format( format, NULL, NULL );
1194 #endif
1195
1196         // Otherwise check on the filename
1197         if ( fmt == NULL && filename != NULL )
1198 #if LIBAVFORMAT_VERSION_INT < ((52<<16)+(45<<8)+0)
1199                 fmt = guess_format( NULL, filename, NULL );
1200 #else
1201                 fmt = av_guess_format( NULL, filename, NULL );
1202 #endif
1203
1204         // Otherwise default to mpeg
1205         if ( fmt == NULL )
1206 #if LIBAVFORMAT_VERSION_INT < ((52<<16)+(45<<8)+0)
1207                 fmt = guess_format( "mpeg", NULL, NULL );
1208 #else
1209                 fmt = av_guess_format( "mpeg", NULL, NULL );
1210 #endif
1211
1212         // We need a filename - default to stdout?
1213         if ( filename == NULL || !strcmp( filename, "" ) )
1214                 filename = "pipe:";
1215
1216         // Get the codec ids selected
1217         audio_codec_id = fmt->audio_codec;
1218         video_codec_id = fmt->video_codec;
1219
1220         // Check for audio codec overides
1221         if ( ( acodec && strcmp( acodec, "none" ) == 0 ) || mlt_properties_get_int( properties, "an" ) )
1222                 audio_codec_id = CODEC_ID_NONE;
1223         else if ( acodec )
1224         {
1225                 audio_codec = avcodec_find_encoder_by_name( acodec );
1226                 if ( audio_codec )
1227                 {
1228                         audio_codec_id = audio_codec->id;
1229                         if ( audio_codec_id == CODEC_ID_AC3 && avcodec_find_encoder_by_name( "ac3_fixed" ) )
1230                         {
1231                                 mlt_properties_set( properties, "_acodec", "ac3_fixed" );
1232                                 acodec = mlt_properties_get( properties, "_acodec" );
1233                                 audio_codec = avcodec_find_encoder_by_name( acodec );
1234                         }
1235                         else if ( !strcmp( acodec, "aac" ) )
1236                         {
1237                                 mlt_properties_set( properties, "astrict", "experimental" );
1238                         }
1239                 }
1240                 else
1241                 {
1242                         audio_codec_id = CODEC_ID_NONE;
1243                         mlt_log_warning( MLT_CONSUMER_SERVICE( consumer ), "audio codec %s unrecognised - ignoring\n", acodec );
1244                 }
1245         }
1246         else
1247         {
1248                 audio_codec = avcodec_find_encoder( audio_codec_id );
1249         }
1250
1251         // Check for video codec overides
1252         if ( ( vcodec && strcmp( vcodec, "none" ) == 0 ) || mlt_properties_get_int( properties, "vn" ) )
1253                 video_codec_id = CODEC_ID_NONE;
1254         else if ( vcodec )
1255         {
1256                 video_codec = avcodec_find_encoder_by_name( vcodec );
1257                 if ( video_codec )
1258                 {
1259                         video_codec_id = video_codec->id;
1260                 }
1261                 else
1262                 {
1263                         video_codec_id = CODEC_ID_NONE;
1264                         mlt_log_warning( MLT_CONSUMER_SERVICE( consumer ), "video codec %s unrecognised - ignoring\n", vcodec );
1265                 }
1266         }
1267         else
1268         {
1269                 video_codec = avcodec_find_encoder( video_codec_id );
1270         }
1271
1272         // Write metadata
1273 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(31<<8)+0)
1274         for ( i = 0; i < mlt_properties_count( properties ); i++ )
1275         {
1276                 char *name = mlt_properties_get_name( properties, i );
1277                 if ( name && !strncmp( name, "meta.attr.", 10 ) )
1278                 {
1279                         char *key = strdup( name + 10 );
1280                         char *markup = strrchr( key, '.' );
1281                         if ( markup && !strcmp( markup, ".markup") )
1282                         {
1283                                 markup[0] = '\0';
1284                                 if ( !strstr( key, ".stream." ) )
1285 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(43<<8)+0)
1286 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(8<<8)+0)
1287                                         av_dict_set( &oc->metadata, key, mlt_properties_get_value( properties, i ), 0 );
1288 #else
1289                                         av_metadata_set2( &oc->metadata, key, mlt_properties_get_value( properties, i ), 0 );
1290 #endif
1291 #else
1292                                         av_metadata_set( &oc->metadata, key, mlt_properties_get_value( properties, i ) );
1293 #endif
1294                         }
1295                         free( key );
1296                 }
1297         }
1298 #else
1299         char *tmp = NULL;
1300         int metavalue;
1301
1302         tmp = mlt_properties_get( properties, "meta.attr.title.markup");
1303         if (tmp != NULL) snprintf( oc->title, sizeof(oc->title), "%s", tmp );
1304
1305         tmp = mlt_properties_get( properties, "meta.attr.comment.markup");
1306         if (tmp != NULL) snprintf( oc->comment, sizeof(oc->comment), "%s", tmp );
1307
1308         tmp = mlt_properties_get( properties, "meta.attr.author.markup");
1309         if (tmp != NULL) snprintf( oc->author, sizeof(oc->author), "%s", tmp );
1310
1311         tmp = mlt_properties_get( properties, "meta.attr.copyright.markup");
1312         if (tmp != NULL) snprintf( oc->copyright, sizeof(oc->copyright), "%s", tmp );
1313
1314         tmp = mlt_properties_get( properties, "meta.attr.album.markup");
1315         if (tmp != NULL) snprintf( oc->album, sizeof(oc->album), "%s", tmp );
1316
1317         metavalue = mlt_properties_get_int( properties, "meta.attr.year.markup");
1318         if (metavalue != 0) oc->year = metavalue;
1319
1320         metavalue = mlt_properties_get_int( properties, "meta.attr.track.markup");
1321         if (metavalue != 0) oc->track = metavalue;
1322 #endif
1323
1324         oc->oformat = fmt;
1325         snprintf( oc->filename, sizeof(oc->filename), "%s", filename );
1326
1327         // Get a frame now, so we can set some AVOptions from properties.
1328         frame = mlt_consumer_rt_frame( consumer );
1329
1330         // Set the timecode from the MLT metadata if available.
1331     if ( frame )
1332     {
1333         const char *timecode = mlt_properties_get( MLT_FRAME_PROPERTIES(frame), "meta.attr.vitc.markup" );
1334         if ( timecode && strcmp( timecode, "" ) )
1335         {
1336             mlt_properties_set( properties, "timecode", timecode );
1337             if ( strchr( timecode, ';' ) )
1338                 mlt_properties_set_int( properties, "drop_frame_timecode", 1 );
1339         }
1340     }
1341
1342         // Add audio and video streams
1343         if ( video_codec_id != CODEC_ID_NONE )
1344                 video_st = add_video_stream( consumer, oc, video_codec );
1345         if ( audio_codec_id != CODEC_ID_NONE )
1346         {
1347                 int is_multi = 0;
1348
1349                 total_channels = 0;
1350                 // multitrack audio
1351                 for ( i = 0; i < MAX_AUDIO_STREAMS; i++ )
1352                 {
1353                         sprintf( key, "channels.%d", i );
1354                         int j = mlt_properties_get_int( properties, key );
1355                         if ( j )
1356                         {
1357                                 is_multi = 1;
1358                                 total_channels += j;
1359                                 audio_st[i] = add_audio_stream( consumer, oc, audio_codec, j );
1360                         }
1361                 }
1362                 // single track
1363                 if ( !is_multi )
1364                 {
1365                         audio_st[0] = add_audio_stream( consumer, oc, audio_codec, channels );
1366                         total_channels = channels;
1367                 }
1368         }
1369         mlt_properties_set_int( properties, "channels", total_channels );
1370
1371         // Audio format is determined when adding the audio stream
1372         mlt_audio_format aud_fmt = mlt_audio_none;
1373         if ( audio_st[0] )
1374                 aud_fmt = get_mlt_audio_format( audio_st[0]->codec->sample_fmt );
1375         int sample_bytes = mlt_audio_format_size( aud_fmt, 1, 1 );
1376         sample_bytes = sample_bytes ? sample_bytes : 1; // prevent divide by zero
1377
1378         // Set the parameters (even though we have none...)
1379 #if LIBAVFORMAT_VERSION_INT < ((53<<16)+(2<<8)+0)
1380         if ( av_set_parameters(oc, NULL) >= 0 )
1381 #endif
1382         {
1383 #if LIBAVFORMAT_VERSION_MAJOR >= 53
1384                 if ( mlt_properties_get( properties, "muxpreload" ) && ! mlt_properties_get( properties, "preload" ) )
1385                         mlt_properties_set_double( properties, "preload", mlt_properties_get_double( properties, "muxpreload" ) );
1386 #else
1387                 oc->preload = ( int )( mlt_properties_get_double( properties, "muxpreload" ) * AV_TIME_BASE );
1388 #endif
1389                 oc->max_delay= ( int )( mlt_properties_get_double( properties, "muxdelay" ) * AV_TIME_BASE );
1390
1391                 // Process properties as AVOptions
1392                 char *fpre = mlt_properties_get( properties, "fpre" );
1393                 if ( fpre )
1394                 {
1395                         mlt_properties p = mlt_properties_load( fpre );
1396                         apply_properties( oc, p, AV_OPT_FLAG_ENCODING_PARAM );
1397 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(110<<8)+0)
1398                         if ( oc->oformat && oc->oformat->priv_class && oc->priv_data )
1399                                 apply_properties( oc->priv_data, p, AV_OPT_FLAG_ENCODING_PARAM );
1400 #endif
1401                         mlt_properties_close( p );
1402                 }
1403                 apply_properties( oc, properties, AV_OPT_FLAG_ENCODING_PARAM );
1404 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(110<<8)+0)
1405                 if ( oc->oformat && oc->oformat->priv_class && oc->priv_data )
1406                         apply_properties( oc->priv_data, properties, AV_OPT_FLAG_ENCODING_PARAM );
1407 #endif
1408
1409                 if ( video_st && !open_video( properties, oc, video_st, vcodec? vcodec : NULL ) )
1410                         video_st = NULL;
1411                 for ( i = 0; i < MAX_AUDIO_STREAMS && audio_st[i]; i++ )
1412                 {
1413                         audio_input_frame_size = open_audio( properties, oc, audio_st[i], audio_outbuf_size,
1414                                 acodec? acodec : NULL );
1415                         if ( !audio_input_frame_size )
1416                         {
1417                                 // Remove the audio stream from the output context
1418                                 int j;
1419                                 for ( j = 0; j < oc->nb_streams; j++ )
1420                                 {
1421                                         if ( oc->streams[j] == audio_st[i] )
1422                                                 av_freep( &oc->streams[j] );
1423                                 }
1424                                 --oc->nb_streams;
1425                                 audio_st[i] = NULL;
1426                         }
1427                 }
1428
1429                 // Setup custom I/O if redirecting
1430                 if ( mlt_properties_get_int( properties, "redirect" ) )
1431                 {
1432                         int buffer_size = 32768;
1433                         unsigned char *buffer = av_malloc( buffer_size );
1434 #if LIBAVFORMAT_VERSION_MAJOR >= 53
1435                         AVIOContext* io = avio_alloc_context( buffer, buffer_size, 1, properties, NULL, mlt_write, NULL );
1436 #else
1437                         ByteIOContext* io = av_alloc_put_byte( buffer, buffer_size, 1, properties, NULL, mlt_write, NULL );
1438 #endif
1439                         if ( buffer && io )
1440                         {
1441                                 oc->pb = io;
1442 #if LIBAVFORMAT_VERSION_MAJOR >= 53
1443                                 oc->flags |= AVFMT_FLAG_CUSTOM_IO;
1444 #endif
1445                                 mlt_properties_set_data( properties, "avio_buffer", buffer, buffer_size, av_free, NULL );
1446                                 mlt_properties_set_data( properties, "avio_context", io, 0, av_free, NULL );
1447                                 mlt_events_register( properties, "avformat-write", (mlt_transmitter) write_transmitter );
1448                         }
1449                         else
1450                         {
1451                                 av_free( buffer );
1452                                 mlt_log_error( MLT_CONSUMER_SERVICE(consumer), "failed to setup output redirection\n" );
1453                         }
1454                 }
1455                 // Open the output file, if needed
1456                 else if ( !( fmt->flags & AVFMT_NOFILE ) )
1457                 {
1458 #if LIBAVFORMAT_VERSION_MAJOR >= 53
1459                         if ( avio_open( &oc->pb, filename, AVIO_FLAG_WRITE ) < 0 )
1460 #else
1461                         if ( url_fopen( &oc->pb, filename, URL_WRONLY ) < 0 )
1462 #endif
1463                         {
1464                                 mlt_log_error( MLT_CONSUMER_SERVICE( consumer ), "Could not open '%s'\n", filename );
1465                                 mlt_events_fire( properties, "consumer-fatal-error", NULL );
1466                                 goto on_fatal_error;
1467                         }
1468                 }
1469
1470                 // Write the stream header.
1471                 if ( mlt_properties_get_int( properties, "running" ) )
1472 #if LIBAVFORMAT_VERSION_INT >= ((53<<16)+(2<<8)+0)
1473                         avformat_write_header( oc, NULL );
1474 #else
1475                         av_write_header( oc );
1476 #endif
1477         }
1478 #if LIBAVFORMAT_VERSION_INT < ((53<<16)+(2<<8)+0)
1479         else
1480         {
1481                 mlt_log_error( MLT_CONSUMER_SERVICE( consumer ), "Invalid output format parameters\n" );
1482                 mlt_events_fire( properties, "consumer-fatal-error", NULL );
1483                 goto on_fatal_error;
1484         }
1485 #endif
1486
1487         // Allocate picture
1488         if ( video_st )
1489                 output = alloc_picture( video_st->codec->pix_fmt, width, height );
1490
1491         // Last check - need at least one stream
1492         if ( !audio_st[0] && !video_st )
1493         {
1494                 mlt_events_fire( properties, "consumer-fatal-error", NULL );
1495                 goto on_fatal_error;
1496         }
1497
1498         // Get the starting time (can ignore the times above)
1499         gettimeofday( &ante, NULL );
1500
1501         // Loop while running
1502         while( mlt_properties_get_int( properties, "running" ) &&
1503                ( !terminated || ( video_st && mlt_deque_count( queue ) ) ) )
1504         {
1505                 if ( !frame )
1506                         frame = mlt_consumer_rt_frame( consumer );
1507
1508                 // Check that we have a frame to work with
1509                 if ( frame != NULL )
1510                 {
1511                         // Increment frames dispatched
1512                         frames ++;
1513
1514                         // Default audio args
1515                         frame_properties = MLT_FRAME_PROPERTIES( frame );
1516
1517                         // Check for the terminated condition
1518                         terminated = terminate_on_pause && mlt_properties_get_double( frame_properties, "_speed" ) == 0.0;
1519
1520                         // Get audio and append to the fifo
1521                         if ( !terminated && audio_st[0] )
1522                         {
1523                                 samples = mlt_sample_calculator( fps, frequency, count ++ );
1524                                 channels = total_channels;
1525                                 mlt_frame_get_audio( frame, &pcm, &aud_fmt, &frequency, &channels, &samples );
1526
1527                                 // Save the audio channel remap properties for later
1528                                 mlt_properties_pass( frame_meta_properties, frame_properties, "meta.map.audio." );
1529
1530                                 // Create the fifo if we don't have one
1531                                 if ( fifo == NULL )
1532                                 {
1533                                         fifo = sample_fifo_init( frequency, channels );
1534                                         mlt_properties_set_data( properties, "sample_fifo", fifo, 0, ( mlt_destructor )sample_fifo_close, NULL );
1535                                 }
1536                                 if ( pcm )
1537                                 {
1538                                         // Silence if not normal forward speed
1539                                         if ( mlt_properties_get_double( frame_properties, "_speed" ) != 1.0 )
1540                                                 memset( pcm, 0, samples * channels * sample_bytes );
1541
1542                                         // Append the samples
1543                                         sample_fifo_append( fifo, pcm, samples * channels * sample_bytes );
1544                                         total_time += ( samples * 1000000 ) / frequency;
1545                                 }
1546                                 if ( !video_st )
1547                                         mlt_events_fire( properties, "consumer-frame-show", frame, NULL );
1548                         }
1549
1550                         // Encode the image
1551                         if ( !terminated && video_st )
1552                                 mlt_deque_push_back( queue, frame );
1553                         else
1554                                 mlt_frame_close( frame );
1555                         frame = NULL;
1556                 }
1557
1558                 // While we have stuff to process, process...
1559                 while ( 1 )
1560                 {
1561                         // Write interleaved audio and video frames
1562                         if ( !video_st || ( video_st && audio_st[0] && audio_pts < video_pts ) )
1563                         {
1564                                 // Write audio
1565                                 if ( ( video_st && terminated ) || ( channels * audio_input_frame_size ) < sample_fifo_used( fifo ) / sample_bytes )
1566                                 {
1567                                         int j = 0; // channel offset into interleaved source buffer
1568                                         int n = FFMIN( FFMIN( channels * audio_input_frame_size, sample_fifo_used( fifo ) / sample_bytes ), AUDIO_ENCODE_BUFFER_SIZE );
1569
1570                                         // Get the audio samples
1571                                         if ( n > 0 )
1572                                         {
1573                                                 sample_fifo_fetch( fifo, audio_buf_1, n * sample_bytes );
1574                                         }
1575                                         else if ( audio_codec_id == CODEC_ID_VORBIS && terminated )
1576                                         {
1577                                                 // This prevents an infinite loop when some versions of vorbis do not
1578                                                 // increment pts when encoding silence.
1579                                                 audio_pts = video_pts;
1580                                                 break;
1581                                         }
1582                                         else
1583                                         {
1584                                                 memset( audio_buf_1, 0, AUDIO_ENCODE_BUFFER_SIZE );
1585                                         }
1586                                         samples = n / channels;
1587
1588                                         // For each output stream
1589                                         for ( i = 0; i < MAX_AUDIO_STREAMS && audio_st[i] && j < total_channels; i++ )
1590                                         {
1591                                                 AVStream *stream = audio_st[i];
1592                                                 AVCodecContext *codec = stream->codec;
1593                                                 AVPacket pkt;
1594
1595                                                 av_init_packet( &pkt );
1596
1597                                                 // Optimized for single track and no channel remap
1598                                                 if ( !audio_st[1] && !mlt_properties_count( frame_meta_properties ) )
1599                                                 {
1600                                                         pkt.size = avcodec_encode_audio( codec, audio_outbuf, audio_outbuf_size, (short*) audio_buf_1 );
1601                                                 }
1602                                                 else
1603                                                 {
1604                                                         // Extract the audio channels according to channel mapping
1605                                                         int dest_offset = 0; // channel offset into interleaved dest buffer
1606
1607                                                         // Get the number of channels for this stream
1608                                                         sprintf( key, "channels.%d", i );
1609                                                         int current_channels = mlt_properties_get_int( properties, key );
1610
1611                                                         // Clear the destination audio buffer.
1612                                                         if ( !audio_buf_2 )
1613                                                                 audio_buf_2 = av_mallocz( AUDIO_ENCODE_BUFFER_SIZE );
1614                                                         else
1615                                                                 memset( audio_buf_2, 0, AUDIO_ENCODE_BUFFER_SIZE );
1616
1617                                                         // For each output channel
1618                                                         while ( dest_offset < current_channels && j < total_channels )
1619                                                         {
1620                                                                 int map_start = -1, map_channels = 0;
1621                                                                 int source_offset = 0;
1622                                                                 int k;
1623
1624                                                                 // Look for a mapping that starts at j
1625                                                                 for ( k = 0; k < (MAX_AUDIO_STREAMS * 2) && map_start != j; k++ )
1626                                                                 {
1627                                                                         sprintf( key, "%d.channels", k );
1628                                                                         map_channels = mlt_properties_get_int( frame_meta_properties, key );
1629                                                                         sprintf( key, "%d.start", k );
1630                                                                         if ( mlt_properties_get( frame_meta_properties, key ) )
1631                                                                                 map_start = mlt_properties_get_int( frame_meta_properties, key );
1632                                                                         if ( map_start != j )
1633                                                                                 source_offset += map_channels;
1634                                                                 }
1635
1636                                                                 // If no mapping
1637                                                                 if ( map_start != j )
1638                                                                 {
1639                                                                         map_channels = current_channels;
1640                                                                         source_offset = j;
1641                                                                 }
1642
1643                                                                 // Copy samples if source offset valid
1644                                                                 if ( source_offset < channels )
1645                                                                 {
1646                                                                         // Interleave the audio buffer with the # channels for this stream/mapping.
1647                                                                         for ( k = 0; k < map_channels; k++, j++, source_offset++, dest_offset++ )
1648                                                                         {
1649                                                                                 void *src = audio_buf_1 + source_offset * sample_bytes;
1650                                                                                 void *dest = audio_buf_2 + dest_offset * sample_bytes;
1651                                                                                 int s = samples + 1;
1652
1653                                                                                 while ( --s ) {
1654                                                                                         memcpy( dest, src, sample_bytes );
1655                                                                                         dest += current_channels * sample_bytes;
1656                                                                                         src += channels * sample_bytes;
1657                                                                                 }
1658                                                                         }
1659                                                                 }
1660                                                                 // Otherwise silence
1661                                                                 else
1662                                                                 {
1663                                                                         j += current_channels;
1664                                                                         dest_offset += current_channels;
1665                                                                 }
1666                                                         }
1667                                                         pkt.size = avcodec_encode_audio( codec, audio_outbuf, audio_outbuf_size, (short*) audio_buf_2 );
1668                                                 }
1669
1670                                                 // Write the compressed frame in the media file
1671                                                 if ( codec->coded_frame && codec->coded_frame->pts != AV_NOPTS_VALUE )
1672                                                 {
1673                                                         pkt.pts = av_rescale_q( codec->coded_frame->pts, codec->time_base, stream->time_base );
1674                                                         mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), "audio stream %d pkt pts %"PRId64" frame pts %"PRId64,
1675                                                                 stream->index, pkt.pts, codec->coded_frame->pts );
1676                                                 }
1677                                                 pkt.flags |= PKT_FLAG_KEY;
1678                                                 pkt.stream_index = stream->index;
1679                                                 pkt.data = audio_outbuf;
1680
1681                                                 if ( pkt.size > 0 )
1682                                                 {
1683                                                         if ( av_interleaved_write_frame( oc, &pkt ) )
1684                                                         {
1685                                                                 mlt_log_fatal( MLT_CONSUMER_SERVICE( consumer ), "error writing audio frame\n" );
1686                                                                 mlt_events_fire( properties, "consumer-fatal-error", NULL );
1687                                                                 goto on_fatal_error;
1688                                                         }
1689                                                 }
1690
1691                                                 mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), " frame_size %d\n", codec->frame_size );
1692                                                 if ( i == 0 )
1693                                                 {
1694                                                         audio_pts = (double)stream->pts.val * av_q2d( stream->time_base );
1695                                                 }
1696                                         }
1697                                 }
1698                                 else
1699                                 {
1700                                         break;
1701                                 }
1702                         }
1703                         else if ( video_st )
1704                         {
1705                                 // Write video
1706                                 if ( mlt_deque_count( queue ) )
1707                                 {
1708                                         int out_size, ret = 0;
1709                                         AVCodecContext *c;
1710
1711                                         frame = mlt_deque_pop_front( queue );
1712                                         frame_properties = MLT_FRAME_PROPERTIES( frame );
1713
1714                                         c = video_st->codec;
1715
1716                                         if ( mlt_properties_get_int( frame_properties, "rendered" ) )
1717                                         {
1718                                                 int i = 0;
1719                                                 uint8_t *p;
1720                                                 uint8_t *q;
1721
1722                                                 mlt_frame_get_image( frame, &image, &img_fmt, &img_width, &img_height, 0 );
1723
1724                                                 q = image;
1725
1726                                                 // Convert the mlt frame to an AVPicture
1727                                                 for ( i = 0; i < height; i ++ )
1728                                                 {
1729                                                         p = input->data[ 0 ] + i * input->linesize[ 0 ];
1730                                                         memcpy( p, q, width * 2 );
1731                                                         q += width * 2;
1732                                                 }
1733
1734                                                 // Do the colour space conversion
1735 #ifdef SWSCALE
1736                                                 int flags = SWS_BICUBIC;
1737 #ifdef USE_MMX
1738                                                 flags |= SWS_CPU_CAPS_MMX;
1739 #endif
1740 #ifdef USE_SSE
1741                                                 flags |= SWS_CPU_CAPS_MMX2;
1742 #endif
1743                                                 struct SwsContext *context = sws_getContext( width, height, PIX_FMT_YUYV422,
1744                                                         width, height, video_st->codec->pix_fmt, flags, NULL, NULL, NULL);
1745                                                 sws_scale( context, (const uint8_t* const*) input->data, input->linesize, 0, height,
1746                                                         output->data, output->linesize);
1747                                                 sws_freeContext( context );
1748 #else
1749                                                 img_convert( ( AVPicture * )output, video_st->codec->pix_fmt, ( AVPicture * )input, PIX_FMT_YUYV422, width, height );
1750 #endif
1751
1752                                                 mlt_events_fire( properties, "consumer-frame-show", frame, NULL );
1753
1754                                                 // Apply the alpha if applicable
1755                                                 if ( video_st->codec->pix_fmt == PIX_FMT_RGB32 )
1756                                                 {
1757                                                         uint8_t *alpha = mlt_frame_get_alpha_mask( frame );
1758                                                         register int n;
1759
1760                                                         for ( i = 0; i < height; i ++ )
1761                                                         {
1762                                                                 n = ( width + 7 ) / 8;
1763                                                                 p = output->data[ 0 ] + i * output->linesize[ 0 ] + 3;
1764
1765                                                                 switch( width % 8 )
1766                                                                 {
1767                                                                         case 0: do { *p = *alpha++; p += 4;
1768                                                                         case 7:          *p = *alpha++; p += 4;
1769                                                                         case 6:          *p = *alpha++; p += 4;
1770                                                                         case 5:          *p = *alpha++; p += 4;
1771                                                                         case 4:          *p = *alpha++; p += 4;
1772                                                                         case 3:          *p = *alpha++; p += 4;
1773                                                                         case 2:          *p = *alpha++; p += 4;
1774                                                                         case 1:          *p = *alpha++; p += 4;
1775                                                                                         }
1776                                                                                         while( --n );
1777                                                                 }
1778                                                         }
1779                                                 }
1780                                         }
1781
1782                                         if (oc->oformat->flags & AVFMT_RAWPICTURE)
1783                                         {
1784                                                 // raw video case. The API will change slightly in the near future for that
1785                                                 AVPacket pkt;
1786                                                 av_init_packet(&pkt);
1787
1788                                                 pkt.flags |= PKT_FLAG_KEY;
1789                                                 pkt.stream_index= video_st->index;
1790                                                 pkt.data= (uint8_t *)output;
1791                                                 pkt.size= sizeof(AVPicture);
1792
1793                                                 ret = av_write_frame(oc, &pkt);
1794                                                 video_pts += c->frame_size;
1795                                         }
1796                                         else
1797                                         {
1798                                                 // Set the quality
1799                                                 output->quality = c->global_quality;
1800
1801                                                 // Set frame interlace hints
1802                                                 output->interlaced_frame = !mlt_properties_get_int( frame_properties, "progressive" );
1803                                                 output->top_field_first = mlt_properties_get_int( frame_properties, "top_field_first" );
1804                                                 output->pts = frame_count;
1805
1806                                                 // Encode the image
1807                                                 out_size = avcodec_encode_video(c, video_outbuf, video_outbuf_size, output );
1808
1809                                                 // If zero size, it means the image was buffered
1810                                                 if ( out_size > 0 )
1811                                                 {
1812                                                         AVPacket pkt;
1813                                                         av_init_packet( &pkt );
1814
1815                                                         if ( c->coded_frame && c->coded_frame->pts != AV_NOPTS_VALUE )
1816                                                                 pkt.pts= av_rescale_q( c->coded_frame->pts, c->time_base, video_st->time_base );
1817                                                         mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), "video pkt pts %"PRId64" frame pts %"PRId64, pkt.pts, c->coded_frame->pts );
1818                                                         if( c->coded_frame && c->coded_frame->key_frame )
1819                                                                 pkt.flags |= PKT_FLAG_KEY;
1820                                                         pkt.stream_index= video_st->index;
1821                                                         pkt.data= video_outbuf;
1822                                                         pkt.size= out_size;
1823
1824                                                         // write the compressed frame in the media file
1825                                                         ret = av_interleaved_write_frame(oc, &pkt);
1826                                                         mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), " frame_size %d\n", c->frame_size );
1827                                                         video_pts = (double)video_st->pts.val * av_q2d( video_st->time_base );
1828
1829                                                         // Dual pass logging
1830                                                         if ( mlt_properties_get_data( properties, "_logfile", NULL ) && c->stats_out )
1831                                                                 fprintf( mlt_properties_get_data( properties, "_logfile", NULL ), "%s", c->stats_out );
1832                                                 }
1833                                                 else if ( out_size < 0 )
1834                                                 {
1835                                                         mlt_log_warning( MLT_CONSUMER_SERVICE( consumer ), "error with video encode %d\n", frame_count );
1836                                                 }
1837                                         }
1838                                         frame_count++;
1839                                         if ( ret )
1840                                         {
1841                                                 mlt_log_fatal( MLT_CONSUMER_SERVICE( consumer ), "error writing video frame\n" );
1842                                                 mlt_events_fire( properties, "consumer-fatal-error", NULL );
1843                                                 goto on_fatal_error;
1844                                         }
1845                                         mlt_frame_close( frame );
1846                                         frame = NULL;
1847                                 }
1848                                 else
1849                                 {
1850                                         break;
1851                                 }
1852                         }
1853                         if ( audio_st[0] )
1854                                 mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), "audio pts %"PRId64" (%f) ", audio_st[0]->pts.val, audio_pts );
1855                         if ( video_st )
1856                                 mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), "video pts %"PRId64" (%f) ", video_st->pts.val, video_pts );
1857                         mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), "\n" );
1858                 }
1859
1860                 if ( real_time_output == 1 && frames % 2 == 0 )
1861                 {
1862                         long passed = time_difference( &ante );
1863                         if ( fifo != NULL )
1864                         {
1865                                 long pending = ( ( ( long )sample_fifo_used( fifo ) / sample_bytes * 1000 ) / frequency ) * 1000;
1866                                 passed -= pending;
1867                         }
1868                         if ( passed < total_time )
1869                         {
1870                                 long total = ( total_time - passed );
1871                                 struct timespec t = { total / 1000000, ( total % 1000000 ) * 1000 };
1872                                 nanosleep( &t, NULL );
1873                         }
1874                 }
1875         }
1876
1877         // Flush the encoder buffers
1878         if ( real_time_output <= 0 )
1879         {
1880                 // Flush audio fifo
1881                 // TODO: flush all audio streams
1882                 if ( audio_st[0] && audio_st[0]->codec->frame_size > 1 ) for (;;)
1883                 {
1884                         AVCodecContext *c = audio_st[0]->codec;
1885                         AVPacket pkt;
1886                         av_init_packet( &pkt );
1887                         pkt.size = 0;
1888
1889                         if ( fifo &&
1890                                 ( channels * audio_input_frame_size < sample_fifo_used( fifo ) / sample_bytes ) )
1891                         {
1892                                 sample_fifo_fetch( fifo, audio_buf_1, channels * audio_input_frame_size * sample_bytes );
1893                                 pkt.size = avcodec_encode_audio( c, audio_outbuf, audio_outbuf_size, (short*) audio_buf_1 );
1894                         }
1895                         if ( pkt.size <= 0 )
1896                                 pkt.size = avcodec_encode_audio( c, audio_outbuf, audio_outbuf_size, NULL );
1897                         mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), "flushing audio size %d\n", pkt.size );
1898                         if ( pkt.size <= 0 )
1899                                 break;
1900
1901                         // Write the compressed frame in the media file
1902                         if ( c->coded_frame && c->coded_frame->pts != AV_NOPTS_VALUE )
1903                                 pkt.pts = av_rescale_q( c->coded_frame->pts, c->time_base, audio_st[0]->time_base );
1904                         pkt.flags |= PKT_FLAG_KEY;
1905                         pkt.stream_index = audio_st[0]->index;
1906                         pkt.data = audio_outbuf;
1907                         if ( av_interleaved_write_frame( oc, &pkt ) != 0 )
1908                         {
1909                                 mlt_log_fatal( MLT_CONSUMER_SERVICE( consumer ), "error writing flushed audio frame\n" );
1910                                 mlt_events_fire( properties, "consumer-fatal-error", NULL );
1911                                 goto on_fatal_error;
1912                         }
1913                 }
1914
1915                 // Flush video
1916                 if ( video_st && !( oc->oformat->flags & AVFMT_RAWPICTURE ) ) for (;;)
1917                 {
1918                         AVCodecContext *c = video_st->codec;
1919                         AVPacket pkt;
1920                         av_init_packet( &pkt );
1921
1922                         // Encode the image
1923                         pkt.size = avcodec_encode_video( c, video_outbuf, video_outbuf_size, NULL );
1924                         mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), "flushing video size %d\n", pkt.size );
1925                         if ( pkt.size <= 0 )
1926                                 break;
1927
1928                         if ( c->coded_frame && c->coded_frame->pts != AV_NOPTS_VALUE )
1929                                 pkt.pts= av_rescale_q( c->coded_frame->pts, c->time_base, video_st->time_base );
1930                         if( c->coded_frame && c->coded_frame->key_frame )
1931                                 pkt.flags |= PKT_FLAG_KEY;
1932                         pkt.stream_index = video_st->index;
1933                         pkt.data = video_outbuf;
1934
1935                         // write the compressed frame in the media file
1936                         if ( av_interleaved_write_frame( oc, &pkt ) != 0 )
1937                         {
1938                                 mlt_log_fatal( MLT_CONSUMER_SERVICE(consumer), "error writing flushed video frame\n" );
1939                                 mlt_events_fire( properties, "consumer-fatal-error", NULL );
1940                                 goto on_fatal_error;
1941                         }
1942                         // Dual pass logging
1943                         if ( mlt_properties_get_data( properties, "_logfile", NULL ) && c->stats_out )
1944                                 fprintf( mlt_properties_get_data( properties, "_logfile", NULL ), "%s", c->stats_out );
1945                 }
1946         }
1947
1948 on_fatal_error:
1949
1950         // Write the trailer, if any
1951         if ( frames )
1952                 av_write_trailer( oc );
1953
1954         // close each codec
1955         if ( video_st )
1956                 close_video(oc, video_st);
1957         for ( i = 0; i < MAX_AUDIO_STREAMS && audio_st[i]; i++ )
1958                 close_audio( oc, audio_st[i] );
1959
1960         // Free the streams
1961         for ( i = 0; i < oc->nb_streams; i++ )
1962                 av_freep( &oc->streams[i] );
1963
1964         // Close the output file
1965         if ( !( fmt->flags & AVFMT_NOFILE ) &&
1966                 !mlt_properties_get_int( properties, "redirect" ) )
1967         {
1968 #if LIBAVFORMAT_VERSION_MAJOR >= 53
1969                 if ( oc->pb  ) avio_close( oc->pb );
1970 #elif LIBAVFORMAT_VERSION_MAJOR >= 52
1971                 if ( oc->pb  ) url_fclose( oc->pb );
1972 #else
1973                 url_fclose( &oc->pb );
1974 #endif
1975         }
1976
1977         // Clean up input and output frames
1978         if ( output )
1979                 av_free( output->data[0] );
1980         av_free( output );
1981         av_free( input->data[0] );
1982         av_free( input );
1983         av_free( video_outbuf );
1984         av_free( audio_buf_1 );
1985         av_free( audio_buf_2 );
1986
1987         // Free the stream
1988         av_free( oc );
1989
1990         // Just in case we terminated on pause
1991         mlt_consumer_stopped( consumer );
1992         mlt_properties_close( frame_meta_properties );
1993
1994         if ( mlt_properties_get_int( properties, "pass" ) > 1 )
1995         {
1996                 // Remove the dual pass log file
1997                 if ( mlt_properties_get( properties, "_logfilename" ) )
1998                         remove( mlt_properties_get( properties, "_logfilename" ) );
1999
2000                 // Remove the x264 dual pass logs
2001                 char *cwd = getcwd( NULL, 0 );
2002                 const char *file = "x264_2pass.log";
2003                 char *full = malloc( strlen( cwd ) + strlen( file ) + 2 );
2004                 sprintf( full, "%s/%s", cwd, file );
2005                 remove( full );
2006                 free( full );
2007                 file = "x264_2pass.log.temp";
2008                 full = malloc( strlen( cwd ) + strlen( file ) + 2 );
2009                 sprintf( full, "%s/%s", cwd, file );
2010                 remove( full );
2011                 free( full );
2012                 file = "x264_2pass.log.mbtree";
2013                 full = malloc( strlen( cwd ) + strlen( file ) + 2 );
2014                 sprintf( full, "%s/%s", cwd, file );
2015                 remove( full );
2016                 free( full );
2017                 free( cwd );
2018                 remove( "x264_2pass.log.temp" );
2019         }
2020
2021         while ( ( frame = mlt_deque_pop_back( queue ) ) )
2022                 mlt_frame_close( frame );
2023
2024         return NULL;
2025 }
2026
2027 /** Close the consumer.
2028 */
2029
2030 static void consumer_close( mlt_consumer consumer )
2031 {
2032         // Stop the consumer
2033         mlt_consumer_stop( consumer );
2034
2035         // Close the parent
2036         mlt_consumer_close( consumer );
2037
2038         // Free the memory
2039         free( consumer );
2040 }