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 #include <libswscale/swscale.h>
  43 #include <libavutil/pixdesc.h>
  44 #include <libavutil/mathematics.h>
  45 #include <libavutil/samplefmt.h>
  46
  47 #if LIBAVCODEC_VERSION_MAJOR >= 53
  48 #include <libavutil/opt.h>
  49 #define CODEC_TYPE_VIDEO      AVMEDIA_TYPE_VIDEO
  50 #define CODEC_TYPE_AUDIO      AVMEDIA_TYPE_AUDIO
  51 #define PKT_FLAG_KEY AV_PKT_FLAG_KEY
  52 #else
  53 #include <libavcodec/opt.h>
  54 #endif
  55
  56 #if LIBAVCODEC_VERSION_MAJOR < 55
  57 #define AV_CODEC_ID_PCM_S16LE CODEC_ID_PCM_S16LE
  58 #define AV_CODEC_ID_PCM_S16BE CODEC_ID_PCM_S16BE
  59 #define AV_CODEC_ID_PCM_U16LE CODEC_ID_PCM_U16LE
  60 #define AV_CODEC_ID_PCM_U16BE CODEC_ID_PCM_U16BE
  61 #define AV_CODEC_ID_H264      CODEC_ID_H264
  62 #define AV_CODEC_ID_NONE      CODEC_ID_NONE
  63 #define AV_CODEC_ID_AC3       CODEC_ID_AC3
  64 #define AV_CODEC_ID_VORBIS    CODEC_ID_VORBIS
  65 #endif
  66
  67 #define MAX_AUDIO_STREAMS (8)
  68 #define AUDIO_ENCODE_BUFFER_SIZE (48000 * 2 * MAX_AUDIO_STREAMS)
  69 #define AUDIO_BUFFER_SIZE (1024 * 42)
  70 #define VIDEO_BUFFER_SIZE (2048 * 1024)
  71
  72 //
  73 // This structure should be extended and made globally available in mlt
  74 //
  75
  76 typedef struct
  77 {
  78         uint8_t *buffer;
  79         int size;
  80         int used;
  81         double time;
  82         int frequency;
  83         int channels;
  84 }
  85 *sample_fifo, sample_fifo_s;
  86
  87 sample_fifo sample_fifo_init( int frequency, int channels )
  88 {
  89         sample_fifo fifo = calloc( 1, sizeof( sample_fifo_s ) );
  90         fifo->frequency = frequency;
  91         fifo->channels = channels;
  92         return fifo;
  93 }
  94
  95 // count is the number of samples multiplied by the number of bytes per sample
  96 void sample_fifo_append( sample_fifo fifo, uint8_t *samples, int count )
  97 {
  98         if ( ( fifo->size - fifo->used ) < count )
  99         {
 100                 fifo->size += count * 5;
 101                 fifo->buffer = realloc( fifo->buffer, fifo->size );
 102         }
 103
 104         memcpy( &fifo->buffer[ fifo->used ], samples, count );
 105         fifo->used += count;
 106 }
 107
 108 int sample_fifo_used( sample_fifo fifo )
 109 {
 110         return fifo->used;
 111 }
 112
 113 int sample_fifo_fetch( sample_fifo fifo, uint8_t *samples, int count )
 114 {
 115         if ( count > fifo->used )
 116                 count = fifo->used;
 117
 118         memcpy( samples, fifo->buffer, count );
 119         fifo->used -= count;
 120         memmove( fifo->buffer, &fifo->buffer[ count ], fifo->used );
 121
 122         fifo->time += ( double )count / fifo->channels / fifo->frequency;
 123
 124         return count;
 125 }
 126
 127 void sample_fifo_close( sample_fifo fifo )
 128 {
 129         free( fifo->buffer );
 130         free( fifo );
 131 }
 132
 133 // Forward references.
 134 static void property_changed( mlt_properties owner, mlt_consumer self, char *name );
 135 static int consumer_start( mlt_consumer consumer );
 136 static int consumer_stop( mlt_consumer consumer );
 137 static int consumer_is_stopped( mlt_consumer consumer );
 138 static void *consumer_thread( void *arg );
 139 static void consumer_close( mlt_consumer consumer );
 140
 141 /** Initialise the consumer.
 142 */
 143
 144 mlt_consumer consumer_avformat_init( mlt_profile profile, char *arg )
 145 {
 146         // Allocate the consumer
 147         mlt_consumer consumer = mlt_consumer_new( profile );
 148
 149         // If memory allocated and initialises without error
 150         if ( consumer != NULL )
 151         {
 152                 // Get properties from the consumer
 153                 mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 154
 155                 // Assign close callback
 156                 consumer->close = consumer_close;
 157
 158                 // Interpret the argument
 159                 if ( arg != NULL )
 160                         mlt_properties_set( properties, "target", arg );
 161
 162                 // sample and frame queue
 163                 mlt_properties_set_data( properties, "frame_queue", mlt_deque_init( ), 0, ( mlt_destructor )mlt_deque_close, NULL );
 164
 165                 // Audio options not fully handled by AVOptions
 166 #define QSCALE_NONE (-99999)
 167                 mlt_properties_set_int( properties, "aq", QSCALE_NONE );
 168
 169                 // Video options not fully handled by AVOptions
 170                 mlt_properties_set_int( properties, "dc", 8 );
 171
 172                 // Muxer options not fully handled by AVOptions
 173                 mlt_properties_set_double( properties, "muxdelay", 0.7 );
 174                 mlt_properties_set_double( properties, "muxpreload", 0.5 );
 175
 176                 // Ensure termination at end of the stream
 177                 mlt_properties_set_int( properties, "terminate_on_pause", 1 );
 178
 179                 // Default to separate processing threads for producer and consumer with no frame dropping!
 180                 mlt_properties_set_int( properties, "real_time", -1 );
 181                 mlt_properties_set_int( properties, "prefill", 1 );
 182
 183                 // Set up start/stop/terminated callbacks
 184                 consumer->start = consumer_start;
 185                 consumer->stop = consumer_stop;
 186                 consumer->is_stopped = consumer_is_stopped;
 187
 188                 mlt_events_register( properties, "consumer-fatal-error", NULL );
 189                 mlt_event event = mlt_events_listen( properties, consumer, "property-changed", ( mlt_listener )property_changed );
 190                 mlt_properties_set_data( properties, "property-changed event", event, 0, NULL, NULL );
 191         }
 192
 193         // Return consumer
 194         return consumer;
 195 }
 196
 197 static void property_changed( mlt_properties owner, mlt_consumer self, char *name )
 198 {
 199         mlt_properties properties = MLT_CONSUMER_PROPERTIES( self );
 200
 201         if ( !strcmp( name, "s" ) )
 202         {
 203                 // Obtain the size property
 204                 char *size = mlt_properties_get( properties, "s" );
 205                 int width = mlt_properties_get_int( properties, "width" );
 206                 int height = mlt_properties_get_int( properties, "height" );
 207                 int tw, th;
 208
 209                 if ( sscanf( size, "%dx%d", &tw, &th ) == 2 && tw > 0 && th > 0 )
 210                 {
 211                         width = tw;
 212                         height = th;
 213                 }
 214                 else
 215                 {
 216                         mlt_log_warning( MLT_CONSUMER_SERVICE(self), "Invalid size property %s - ignoring.\n", size );
 217                 }
 218
 219                 // Now ensure we honour the multiple of two requested by libavformat
 220                 width = ( width / 2 ) * 2;
 221                 height = ( height / 2 ) * 2;
 222                 mlt_properties_set_int( properties, "width", width );
 223                 mlt_properties_set_int( properties, "height", height );
 224         }
 225         // "-aspect" on ffmpeg command line is display aspect ratio
 226         else if ( !strcmp( name, "aspect" ) )
 227         {
 228                 double ar = mlt_properties_get_double( properties, "aspect" );
 229                 AVRational rational = av_d2q( ar, 255 );
 230                 int width = mlt_properties_get_int( properties, "width" );
 231                 int height = mlt_properties_get_int( properties, "height" );
 232
 233                 // Update the profile and properties as well since this is an alias
 234                 // for mlt properties that correspond to profile settings
 235                 mlt_properties_set_int( properties, "display_aspect_num", rational.num );
 236                 mlt_properties_set_int( properties, "display_aspect_den", rational.den );
 237
 238                 // Now compute the sample aspect ratio
 239                 rational = av_d2q( ar * height / width, 255 );
 240
 241                 // Update the profile and properties as well since this is an alias
 242                 // for mlt properties that correspond to profile settings
 243                 mlt_properties_set_int( properties, "sample_aspect_num", rational.num );
 244                 mlt_properties_set_int( properties, "sample_aspect_den", rational.den );
 245         }
 246         // Handle the ffmpeg command line "-r" property for frame rate
 247         else if ( !strcmp( name, "r" ) )
 248         {
 249                 double frame_rate = mlt_properties_get_double( properties, "r" );
 250                 AVRational rational = av_d2q( frame_rate, 255 );
 251                 mlt_properties_set_int( properties, "frame_rate_num", rational.num );
 252                 mlt_properties_set_int( properties, "frame_rate_den", rational.den );
 253         }
 254 }
 255
 256 /** Start the consumer.
 257 */
 258
 259 static int consumer_start( mlt_consumer consumer )
 260 {
 261         // Get the properties
 262         mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 263         int error = 0;
 264
 265         // Report information about available muxers and codecs as YAML Tiny
 266         char *s = mlt_properties_get( properties, "f" );
 267         if ( s && strcmp( s, "list" ) == 0 )
 268         {
 269                 mlt_properties doc = mlt_properties_new();
 270                 mlt_properties formats = mlt_properties_new();
 271                 char key[20];
 272                 AVOutputFormat *format = NULL;
 273
 274                 mlt_properties_set_data( properties, "f", formats, 0, (mlt_destructor) mlt_properties_close, NULL );
 275                 mlt_properties_set_data( doc, "formats", formats, 0, NULL, NULL );
 276                 while ( ( format = av_oformat_next( format ) ) )
 277                 {
 278                         snprintf( key, sizeof(key), "%d", mlt_properties_count( formats ) );
 279                         mlt_properties_set( formats, key, format->name );
 280                 }
 281                 s = mlt_properties_serialise_yaml( doc );
 282                 fprintf( stdout, "%s", s );
 283                 free( s );
 284                 mlt_properties_close( doc );
 285                 error = 1;
 286         }
 287         s = mlt_properties_get( properties, "acodec" );
 288         if ( s && strcmp( s, "list" ) == 0 )
 289         {
 290                 mlt_properties doc = mlt_properties_new();
 291                 mlt_properties codecs = mlt_properties_new();
 292                 char key[20];
 293                 AVCodec *codec = NULL;
 294
 295                 mlt_properties_set_data( properties, "acodec", codecs, 0, (mlt_destructor) mlt_properties_close, NULL );
 296                 mlt_properties_set_data( doc, "audio_codecs", codecs, 0, NULL, NULL );
 297                 while ( ( codec = av_codec_next( codec ) ) )
 298 #if (defined(FFUDIV) && LIBAVCODEC_VERSION_INT >= ((54<<16)+(56<<8)+100)) || (LIBAVCODEC_VERSION_INT >= ((54<<16)+(27<<8)+0))
 299                         if ( codec->encode2 && codec->type == CODEC_TYPE_AUDIO )
 300 #elif LIBAVCODEC_VERSION_INT >= ((54<<16)+(0<<8)+0)
 301                         if ( ( codec->encode || codec->encode2 ) && codec->type == CODEC_TYPE_AUDIO )
 302 #else
 303                         if ( codec->encode && codec->type == CODEC_TYPE_AUDIO )
 304 #endif
 305                         {
 306                                 snprintf( key, sizeof(key), "%d", mlt_properties_count( codecs ) );
 307                                 mlt_properties_set( codecs, key, codec->name );
 308                         }
 309                 s = mlt_properties_serialise_yaml( doc );
 310                 fprintf( stdout, "%s", s );
 311                 free( s );
 312                 mlt_properties_close( doc );
 313                 error = 1;
 314         }
 315         s = mlt_properties_get( properties, "vcodec" );
 316         if ( s && strcmp( s, "list" ) == 0 )
 317         {
 318                 mlt_properties doc = mlt_properties_new();
 319                 mlt_properties codecs = mlt_properties_new();
 320                 char key[20];
 321                 AVCodec *codec = NULL;
 322
 323                 mlt_properties_set_data( properties, "vcodec", codecs, 0, (mlt_destructor) mlt_properties_close, NULL );
 324                 mlt_properties_set_data( doc, "video_codecs", codecs, 0, NULL, NULL );
 325                 while ( ( codec = av_codec_next( codec ) ) )
 326 #if (defined(FFUDIV) && LIBAVCODEC_VERSION_INT >= ((54<<16)+(56<<8)+100)) || (LIBAVCODEC_VERSION_INT >= ((54<<16)+(27<<8)+0))
 327                         if ( codec->encode2 && codec->type == CODEC_TYPE_VIDEO )
 328 #elif LIBAVCODEC_VERSION_INT >= ((54<<16)+(0<<8)+0)
 329                         if ( (codec->encode || codec->encode2) && codec->type == CODEC_TYPE_VIDEO )
 330 #else
 331                         if ( codec->encode && codec->type == CODEC_TYPE_VIDEO )
 332 #endif
 333                         {
 334                                 snprintf( key, sizeof(key), "%d", mlt_properties_count( codecs ) );
 335                                 mlt_properties_set( codecs, key, codec->name );
 336                         }
 337                 s = mlt_properties_serialise_yaml( doc );
 338                 fprintf( stdout, "%s", s );
 339                 free( s );
 340                 mlt_properties_close( doc );
 341                 error = 1;
 342         }
 343
 344         // Check that we're not already running
 345         if ( !error && !mlt_properties_get_int( properties, "running" ) )
 346         {
 347                 // Allocate a thread
 348                 pthread_t *thread = calloc( 1, sizeof( pthread_t ) );
 349
 350                 mlt_event_block( mlt_properties_get_data( properties, "property-changed event", NULL ) );
 351
 352                 // Apply AVOptions that are synonyms for standard mlt_consumer options
 353                 if ( mlt_properties_get( properties, "ac" ) )
 354                         mlt_properties_set_int( properties, "channels", mlt_properties_get_int( properties, "ac" ) );
 355                 if ( mlt_properties_get( properties, "ar" ) )
 356                         mlt_properties_set_int( properties, "frequency", mlt_properties_get_int( properties, "ar" ) );
 357
 358                 // Assign the thread to properties
 359                 mlt_properties_set_data( properties, "thread", thread, sizeof( pthread_t ), free, NULL );
 360
 361                 // Create the thread
 362                 pthread_create( thread, NULL, consumer_thread, consumer );
 363
 364                 // Set the running state
 365                 mlt_properties_set_int( properties, "running", 1 );
 366         }
 367         return error;
 368 }
 369
 370 /** Stop the consumer.
 371 */
 372
 373 static int consumer_stop( mlt_consumer consumer )
 374 {
 375         // Get the properties
 376         mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 377         pthread_t *thread = mlt_properties_get_data( properties, "thread", NULL );
 378
 379         // Check that we're running
 380         if ( thread )
 381         {
 382                 // Stop the thread
 383                 mlt_properties_set_int( properties, "running", 0 );
 384
 385                 // Wait for termination
 386                 pthread_join( *thread, NULL );
 387
 388                 mlt_properties_set_data( properties, "thread", NULL, 0, NULL, NULL );
 389                 mlt_event_unblock( mlt_properties_get_data( properties, "property-changed event", NULL ) );
 390         }
 391
 392         return 0;
 393 }
 394
 395 /** Determine if the consumer is stopped.
 396 */
 397
 398 static int consumer_is_stopped( mlt_consumer consumer )
 399 {
 400         // Get the properties
 401         mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 402         return !mlt_properties_get_int( properties, "running" );
 403 }
 404
 405 /** Process properties as AVOptions and apply to AV context obj
 406 */
 407
 408 static void apply_properties( void *obj, mlt_properties properties, int flags )
 409 {
 410         int i;
 411         int count = mlt_properties_count( properties );
 412 #if LIBAVUTIL_VERSION_INT < ((51<<16)+(12<<8)+0)
 413         int alloc = 1;
 414 #endif
 415
 416         for ( i = 0; i < count; i++ )
 417         {
 418                 const char *opt_name = mlt_properties_get_name( properties, i );
 419 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(10<<8)+0)
 420                 const AVOption *opt = av_opt_find( obj, opt_name, NULL, flags, flags );
 421 #else
 422                 const AVOption *opt = av_find_opt( obj, opt_name, NULL, flags, flags );
 423 #endif
 424
 425                 // If option not found, see if it was prefixed with a or v (-vb)
 426                 if ( !opt && (
 427                         ( opt_name[0] == 'v' && ( flags & AV_OPT_FLAG_VIDEO_PARAM ) ) ||
 428                         ( opt_name[0] == 'a' && ( flags & AV_OPT_FLAG_AUDIO_PARAM ) ) ) )
 429 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(10<<8)+0)
 430                         opt = av_opt_find( obj, ++opt_name, NULL, flags, flags );
 431 #else
 432                         opt = av_find_opt( obj, ++opt_name, NULL, flags, flags );
 433 #endif
 434                 // Apply option if found
 435                 if ( opt )
 436 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(12<<8)+0)
 437                         av_opt_set( obj, opt_name, mlt_properties_get_value( properties, i), 0 );
 438 #else
 439                         av_set_string3( obj, opt_name, mlt_properties_get_value( properties, i), alloc, NULL );
 440 #endif
 441         }
 442 }
 443
 444 static enum PixelFormat pick_pix_fmt( mlt_image_format img_fmt )
 445 {
 446         switch ( img_fmt )
 447         {
 448         case mlt_image_rgb24:
 449                 return PIX_FMT_RGB24;
 450         case mlt_image_rgb24a:
 451                 return PIX_FMT_RGBA;
 452         case mlt_image_yuv420p:
 453                 return PIX_FMT_YUV420P;
 454         default:
 455                 return PIX_FMT_YUYV422;
 456         }
 457 }
 458
 459 static int get_mlt_audio_format( int av_sample_fmt )
 460 {
 461         switch ( av_sample_fmt )
 462         {
 463         case AV_SAMPLE_FMT_U8:
 464                 return mlt_audio_u8;
 465         case AV_SAMPLE_FMT_S32:
 466                 return mlt_audio_s32le;
 467         case AV_SAMPLE_FMT_FLT:
 468                 return mlt_audio_f32le;
 469 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(17<<8)+0)
 470         case AV_SAMPLE_FMT_U8P:
 471                 return mlt_audio_u8;
 472         case AV_SAMPLE_FMT_S32P:
 473                 return mlt_audio_s32le;
 474         case AV_SAMPLE_FMT_FLTP:
 475                 return mlt_audio_f32le;
 476 #endif
 477         default:
 478                 return mlt_audio_s16;
 479         }
 480 }
 481
 482 static int pick_sample_fmt( mlt_properties properties, AVCodec *codec )
 483 {
 484         int sample_fmt = AV_SAMPLE_FMT_S16;
 485         const char *format = mlt_properties_get( properties, "mlt_audio_format" );
 486         const int *p = codec->sample_fmts;
 487
 488         // get default av_sample_fmt from mlt_audio_format
 489         if ( format )
 490         {
 491                 if ( !strcmp( format, "s32le" ) )
 492                         sample_fmt = AV_SAMPLE_FMT_S32;
 493                 else if ( !strcmp( format, "f32le" ) )
 494                         sample_fmt = AV_SAMPLE_FMT_FLT;
 495                 else if ( !strcmp( format, "u8" ) )
 496                         sample_fmt = AV_SAMPLE_FMT_U8;
 497 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(17<<8)+0)
 498                 else if ( !strcmp( format, "s32" ) )
 499                         sample_fmt = AV_SAMPLE_FMT_S32P;
 500                 else if ( !strcmp( format, "float" ) )
 501                         sample_fmt = AV_SAMPLE_FMT_FLTP;
 502 #endif
 503         }
 504         // check if codec supports our mlt_audio_format
 505         for ( ; *p != -1; p++ )
 506         {
 507                 if ( *p == sample_fmt )
 508                         return sample_fmt;
 509         }
 510         // no match - pick first one we support
 511         for ( p = codec->sample_fmts; *p != -1; p++ )
 512         {
 513                 switch (*p)
 514                 {
 515                 case AV_SAMPLE_FMT_U8:
 516                 case AV_SAMPLE_FMT_S16:
 517                 case AV_SAMPLE_FMT_S32:
 518                 case AV_SAMPLE_FMT_FLT:
 519 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(17<<8)+0)
 520                 case AV_SAMPLE_FMT_U8P:
 521                 case AV_SAMPLE_FMT_S16P:
 522                 case AV_SAMPLE_FMT_S32P:
 523                 case AV_SAMPLE_FMT_FLTP:
 524 #endif
 525                         return *p;
 526                 default:
 527                         break;
 528                 }
 529         }
 530         mlt_log_error( properties, "audio codec sample_fmt not compatible" );
 531
 532         return AV_SAMPLE_FMT_NONE;
 533 }
 534
 535 static uint8_t* interleaved_to_planar( int samples, int channels, uint8_t* audio, int bytes_per_sample )
 536 {
 537         uint8_t *buffer = mlt_pool_alloc( AUDIO_ENCODE_BUFFER_SIZE );
 538         uint8_t *p = buffer;
 539         int c;
 540
 541         memset( buffer, 0, AUDIO_ENCODE_BUFFER_SIZE );
 542         for ( c = 0; c < channels; c++ )
 543         {
 544                 uint8_t *q = audio + c * bytes_per_sample;
 545                 int i = samples + 1;
 546                 while ( --i )
 547                 {
 548                         memcpy( p, q, bytes_per_sample );
 549                         p += bytes_per_sample;
 550                         q += channels * bytes_per_sample;
 551                 }
 552         }
 553         return buffer;
 554 }
 555
 556 /** Add an audio output stream
 557 */
 558
 559 static AVStream *add_audio_stream( mlt_consumer consumer, AVFormatContext *oc, AVCodec *codec, int channels )
 560 {
 561         // Get the properties
 562         mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 563
 564         // Create a new stream
 565 #if LIBAVFORMAT_VERSION_INT >= ((53<<16)+(10<<8)+0)
 566         AVStream *st = avformat_new_stream( oc, codec );
 567 #else
 568         AVStream *st = av_new_stream( oc, oc->nb_streams );
 569 #endif
 570
 571         // If created, then initialise from properties
 572         if ( st != NULL )
 573         {
 574                 AVCodecContext *c = st->codec;
 575
 576                 // Establish defaults from AVOptions
 577 #if LIBAVCODEC_VERSION_MAJOR >= 53
 578                 avcodec_get_context_defaults3( c, codec );
 579 #else
 580                 avcodec_get_context_defaults2( c, CODEC_TYPE_AUDIO );
 581 #endif
 582
 583                 c->codec_id = codec->id;
 584                 c->codec_type = CODEC_TYPE_AUDIO;
 585                 c->sample_fmt = pick_sample_fmt( properties, codec );
 586
 587 #if 0 // disabled until some audio codecs are multi-threaded
 588                 // Setup multi-threading
 589                 int thread_count = mlt_properties_get_int( properties, "threads" );
 590                 if ( thread_count == 0 && getenv( "MLT_AVFORMAT_THREADS" ) )
 591                         thread_count = atoi( getenv( "MLT_AVFORMAT_THREADS" ) );
 592                 if ( thread_count > 1 )
 593                         c->thread_count = thread_count;
 594 #endif
 595
 596                 if (oc->oformat->flags & AVFMT_GLOBALHEADER)
 597                         c->flags |= CODEC_FLAG_GLOBAL_HEADER;
 598
 599                 // Allow the user to override the audio fourcc
 600                 if ( mlt_properties_get( properties, "atag" ) )
 601                 {
 602                         char *tail = NULL;
 603                         char *arg = mlt_properties_get( properties, "atag" );
 604                         int tag = strtol( arg, &tail, 0);
 605                         if( !tail || *tail )
 606                                 tag = arg[ 0 ] + ( arg[ 1 ] << 8 ) + ( arg[ 2 ] << 16 ) + ( arg[ 3 ] << 24 );
 607                         c->codec_tag = tag;
 608                 }
 609
 610                 // Process properties as AVOptions
 611                 char *apre = mlt_properties_get( properties, "apre" );
 612                 if ( apre )
 613                 {
 614                         mlt_properties p = mlt_properties_load( apre );
 615                         apply_properties( c, p, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM );
 616                         mlt_properties_close( p );
 617                 }
 618                 apply_properties( c, properties, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM );
 619
 620                 int audio_qscale = mlt_properties_get_int( properties, "aq" );
 621                 if ( audio_qscale > QSCALE_NONE )
 622                 {
 623                         c->flags |= CODEC_FLAG_QSCALE;
 624                         c->global_quality = FF_QP2LAMBDA * audio_qscale;
 625 #if LIBAVFORMAT_VERSION_MAJOR < 53
 626                         st->quality = c->global_quality;
 627 #endif
 628                 }
 629
 630                 // Set parameters controlled by MLT
 631                 c->sample_rate = mlt_properties_get_int( properties, "frequency" );
 632                 c->time_base = ( AVRational ){ 1, c->sample_rate };
 633                 c->channels = channels;
 634
 635                 if ( mlt_properties_get( properties, "alang" ) != NULL )
 636 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(8<<8)+0)
 637                         av_dict_set( &oc->metadata, "language", mlt_properties_get( properties, "alang" ), 0 );
 638 #else
 639                         av_metadata_set2( &oc->metadata, "language", mlt_properties_get( properties, "alang" ), 0 );
 640 #endif
 641         }
 642         else
 643         {
 644                 mlt_log_error( MLT_CONSUMER_SERVICE( consumer ), "Could not allocate a stream for audio\n" );
 645         }
 646
 647         return st;
 648 }
 649
 650 static int open_audio( mlt_properties properties, AVFormatContext *oc, AVStream *st, int audio_outbuf_size, const char *codec_name )
 651 {
 652         // We will return the audio input size from here
 653         int audio_input_frame_size = 0;
 654
 655         // Get the context
 656         AVCodecContext *c = st->codec;
 657
 658         // Find the encoder
 659         AVCodec *codec;
 660         if ( codec_name )
 661                 codec = avcodec_find_encoder_by_name( codec_name );
 662         else
 663                 codec = avcodec_find_encoder( c->codec_id );
 664
 665         // Process properties as AVOptions on the AVCodec
 666         if ( codec && codec->priv_class )
 667         {
 668                 char *apre = mlt_properties_get( properties, "apre" );
 669                 if ( !c->priv_data && codec->priv_data_size )
 670                 {
 671                         c->priv_data = av_mallocz( codec->priv_data_size );
 672                         *(const AVClass **) c->priv_data = codec->priv_class;
 673 //                      av_opt_set_defaults( c );
 674                 }
 675                 if ( apre )
 676                 {
 677                         mlt_properties p = mlt_properties_load( apre );
 678                         apply_properties( c->priv_data, p, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM );
 679                         mlt_properties_close( p );
 680                 }
 681                 apply_properties( c->priv_data, properties, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM );
 682         }
 683
 684         // Continue if codec found and we can open it
 685 #if LIBAVCODEC_VERSION_INT >= ((53<<16)+(8<<8)+0)
 686         if ( codec && avcodec_open2( c, codec, NULL ) >= 0 )
 687 #else
 688         if ( codec && avcodec_open( c, codec ) >= 0 )
 689 #endif
 690         {
 691                 // ugly hack for PCM codecs (will be removed ASAP with new PCM
 692                 // support to compute the input frame size in samples
 693                 if ( c->frame_size <= 1 )
 694                 {
 695                         audio_input_frame_size = audio_outbuf_size / c->channels;
 696                         switch(st->codec->codec_id)
 697                         {
 698                                 case AV_CODEC_ID_PCM_S16LE:
 699                                 case AV_CODEC_ID_PCM_S16BE:
 700                                 case AV_CODEC_ID_PCM_U16LE:
 701                                 case AV_CODEC_ID_PCM_U16BE:
 702                                         audio_input_frame_size >>= 1;
 703                                         break;
 704                                 default:
 705                                         break;
 706                         }
 707                 }
 708                 else
 709                 {
 710                         audio_input_frame_size = c->frame_size;
 711                 }
 712
 713                 // Some formats want stream headers to be seperate (hmm)
 714                 if ( !strcmp( oc->oformat->name, "mp4" ) ||
 715                          !strcmp( oc->oformat->name, "mov" ) ||
 716                          !strcmp( oc->oformat->name, "3gp" ) )
 717                         c->flags |= CODEC_FLAG_GLOBAL_HEADER;
 718         }
 719         else
 720         {
 721                 mlt_log_warning( NULL, "%s: Unable to encode audio - disabling audio output.\n", __FILE__ );
 722                 audio_input_frame_size = 0;
 723         }
 724
 725         return audio_input_frame_size;
 726 }
 727
 728 static void close_audio( AVFormatContext *oc, AVStream *st )
 729 {
 730         if ( st && st->codec )
 731                 avcodec_close( st->codec );
 732 }
 733
 734 /** Add a video output stream
 735 */
 736
 737 static AVStream *add_video_stream( mlt_consumer consumer, AVFormatContext *oc, AVCodec *codec )
 738 {
 739         // Get the properties
 740         mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 741
 742         // Create a new stream
 743 #if LIBAVFORMAT_VERSION_INT >= ((53<<16)+(10<<8)+0)
 744         AVStream *st = avformat_new_stream( oc, codec );
 745 #else
 746         AVStream *st = av_new_stream( oc, oc->nb_streams );
 747 #endif
 748
 749         if ( st != NULL )
 750         {
 751                 char *pix_fmt = mlt_properties_get( properties, "pix_fmt" );
 752                 AVCodecContext *c = st->codec;
 753
 754                 // Establish defaults from AVOptions
 755 #if LIBAVCODEC_VERSION_MAJOR >= 53
 756                 avcodec_get_context_defaults3( c, codec );
 757 #else
 758                 avcodec_get_context_defaults2( c, CODEC_TYPE_VIDEO );
 759 #endif
 760
 761                 c->codec_id = codec->id;
 762                 c->codec_type = CODEC_TYPE_VIDEO;
 763
 764                 // Setup multi-threading
 765                 int thread_count = mlt_properties_get_int( properties, "threads" );
 766                 if ( thread_count == 0 && getenv( "MLT_AVFORMAT_THREADS" ) )
 767                         thread_count = atoi( getenv( "MLT_AVFORMAT_THREADS" ) );
 768                 if ( thread_count > 1 )
 769 #if LIBAVCODEC_VERSION_MAJOR >= 53
 770                         c->thread_count = thread_count;
 771 #else
 772                         avcodec_thread_init( c, thread_count );
 773 #endif
 774
 775                 // Process properties as AVOptions
 776                 char *vpre = mlt_properties_get( properties, "vpre" );
 777                 if ( vpre )
 778                 {
 779                         mlt_properties p = mlt_properties_load( vpre );
 780 #ifdef AVDATADIR
 781                         if ( mlt_properties_count( p ) < 1 )
 782                         {
 783                                 AVCodec *codec = avcodec_find_encoder( c->codec_id );
 784                                 if ( codec )
 785                                 {
 786                                         char *path = malloc( strlen(AVDATADIR) + strlen(codec->name) + strlen(vpre) + strlen(".ffpreset") + 2 );
 787                                         strcpy( path, AVDATADIR );
 788                                         strcat( path, codec->name );
 789                                         strcat( path, "-" );
 790                                         strcat( path, vpre );
 791                                         strcat( path, ".ffpreset" );
 792
 793                                         mlt_properties_close( p );
 794                                         p = mlt_properties_load( path );
 795                                         if ( mlt_properties_count( p ) > 0 )
 796                                                 mlt_properties_debug( p, path, stderr );
 797                                         free( path );
 798                                 }
 799                         }
 800                         else
 801                         {
 802                                 mlt_properties_debug( p, vpre, stderr );
 803                         }
 804 #endif
 805                         apply_properties( c, p, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM );
 806                         mlt_properties_close( p );
 807                 }
 808                 int colorspace = mlt_properties_get_int( properties, "colorspace" );
 809                 mlt_properties_set( properties, "colorspace", NULL );
 810                 apply_properties( c, properties, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM );
 811                 mlt_properties_set_int( properties, "colorspace", colorspace );
 812
 813                 // Set options controlled by MLT
 814                 c->width = mlt_properties_get_int( properties, "width" );
 815                 c->height = mlt_properties_get_int( properties, "height" );
 816                 c->time_base.num = mlt_properties_get_int( properties, "frame_rate_den" );
 817                 c->time_base.den = mlt_properties_get_int( properties, "frame_rate_num" );
 818                 if ( st->time_base.den == 0 )
 819                         st->time_base = c->time_base;
 820                 c->pix_fmt = pix_fmt ? av_get_pix_fmt( pix_fmt ) : PIX_FMT_YUV420P;
 821
 822                 switch ( colorspace )
 823                 {
 824                 case 170:
 825                         c->colorspace = AVCOL_SPC_SMPTE170M;
 826                         break;
 827                 case 240:
 828                         c->colorspace = AVCOL_SPC_SMPTE240M;
 829                         break;
 830                 case 470:
 831                         c->colorspace = AVCOL_SPC_BT470BG;
 832                         break;
 833                 case 601:
 834                         c->colorspace = ( 576 % c->height ) ? AVCOL_SPC_SMPTE170M : AVCOL_SPC_BT470BG;
 835                         break;
 836                 case 709:
 837                         c->colorspace = AVCOL_SPC_BT709;
 838                         break;
 839                 }
 840
 841                 if ( mlt_properties_get( properties, "aspect" ) )
 842                 {
 843                         // "-aspect" on ffmpeg command line is display aspect ratio
 844                         double ar = mlt_properties_get_double( properties, "aspect" );
 845                         c->sample_aspect_ratio = av_d2q( ar * c->height / c->width, 255 );
 846                 }
 847                 else
 848                 {
 849                         c->sample_aspect_ratio.num = mlt_properties_get_int( properties, "sample_aspect_num" );
 850                         c->sample_aspect_ratio.den = mlt_properties_get_int( properties, "sample_aspect_den" );
 851                 }
 852                 st->sample_aspect_ratio = c->sample_aspect_ratio;
 853
 854                 if ( mlt_properties_get_double( properties, "qscale" ) > 0 )
 855                 {
 856                         c->flags |= CODEC_FLAG_QSCALE;
 857                         c->global_quality = FF_QP2LAMBDA * mlt_properties_get_double( properties, "qscale" );
 858 #if LIBAVFORMAT_VERSION_MAJOR < 53
 859                         st->quality = c->global_quality;
 860 #endif
 861                 }
 862
 863                 // Allow the user to override the video fourcc
 864                 if ( mlt_properties_get( properties, "vtag" ) )
 865                 {
 866                         char *tail = NULL;
 867                         const char *arg = mlt_properties_get( properties, "vtag" );
 868                         int tag = strtol( arg, &tail, 0);
 869                         if( !tail || *tail )
 870                                 tag = arg[ 0 ] + ( arg[ 1 ] << 8 ) + ( arg[ 2 ] << 16 ) + ( arg[ 3 ] << 24 );
 871                         c->codec_tag = tag;
 872                 }
 873
 874                 // Some formats want stream headers to be seperate
 875                 if ( oc->oformat->flags & AVFMT_GLOBALHEADER )
 876                         c->flags |= CODEC_FLAG_GLOBAL_HEADER;
 877
 878                 // Translate these standard mlt consumer properties to ffmpeg
 879                 if ( mlt_properties_get_int( properties, "progressive" ) == 0 &&
 880                      mlt_properties_get_int( properties, "deinterlace" ) == 0 )
 881                 {
 882                         if ( ! mlt_properties_get( properties, "ildct" ) || mlt_properties_get_int( properties, "ildct" ) )
 883                                 c->flags |= CODEC_FLAG_INTERLACED_DCT;
 884                         if ( ! mlt_properties_get( properties, "ilme" ) || mlt_properties_get_int( properties, "ilme" ) )
 885                                 c->flags |= CODEC_FLAG_INTERLACED_ME;
 886                 }
 887
 888                 // parse the ratecontrol override string
 889                 int i;
 890                 char *rc_override = mlt_properties_get( properties, "rc_override" );
 891                 for ( i = 0; rc_override; i++ )
 892                 {
 893                         int start, end, q;
 894                         int e = sscanf( rc_override, "%d,%d,%d", &start, &end, &q );
 895                         if ( e != 3 )
 896                                 mlt_log_warning( MLT_CONSUMER_SERVICE( consumer ), "Error parsing rc_override\n" );
 897                         c->rc_override = av_realloc( c->rc_override, sizeof( RcOverride ) * ( i + 1 ) );
 898                         c->rc_override[i].start_frame = start;
 899                         c->rc_override[i].end_frame = end;
 900                         if ( q > 0 )
 901                         {
 902                                 c->rc_override[i].qscale = q;
 903                                 c->rc_override[i].quality_factor = 1.0;
 904                         }
 905                         else
 906                         {
 907                                 c->rc_override[i].qscale = 0;
 908                                 c->rc_override[i].quality_factor = -q / 100.0;
 909                         }
 910                         rc_override = strchr( rc_override, '/' );
 911                         if ( rc_override )
 912                                 rc_override++;
 913                 }
 914                 c->rc_override_count = i;
 915                 if ( !c->rc_initial_buffer_occupancy )
 916                         c->rc_initial_buffer_occupancy = c->rc_buffer_size * 3/4;
 917                 c->intra_dc_precision = mlt_properties_get_int( properties, "dc" ) - 8;
 918
 919                 // Setup dual-pass
 920                 i = mlt_properties_get_int( properties, "pass" );
 921                 if ( i == 1 )
 922                         c->flags |= CODEC_FLAG_PASS1;
 923                 else if ( i == 2 )
 924                         c->flags |= CODEC_FLAG_PASS2;
 925                 if ( codec->id != AV_CODEC_ID_H264 && ( c->flags & ( CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2 ) ) )
 926                 {
 927                         char logfilename[1024];
 928                         FILE *f;
 929                         int size;
 930                         char *logbuffer;
 931
 932                         snprintf( logfilename, sizeof(logfilename), "%s_2pass.log",
 933                                 mlt_properties_get( properties, "passlogfile" ) ? mlt_properties_get( properties, "passlogfile" ) : mlt_properties_get( properties, "target" ) );
 934                         if ( c->flags & CODEC_FLAG_PASS1 )
 935                         {
 936                                 f = fopen( logfilename, "w" );
 937                                 if ( !f )
 938                                         perror( logfilename );
 939                                 else
 940                                         mlt_properties_set_data( properties, "_logfile", f, 0, ( mlt_destructor )fclose, NULL );
 941                         }
 942                         else
 943                         {
 944                                 /* read the log file */
 945                                 f = fopen( logfilename, "r" );
 946                                 if ( !f )
 947                                 {
 948                                         perror(logfilename);
 949                                 }
 950                                 else
 951                                 {
 952                                         mlt_properties_set( properties, "_logfilename", logfilename );
 953                                         fseek( f, 0, SEEK_END );
 954                                         size = ftell( f );
 955                                         fseek( f, 0, SEEK_SET );
 956                                         logbuffer = av_malloc( size + 1 );
 957                                         if ( !logbuffer )
 958                                                 mlt_log_fatal( MLT_CONSUMER_SERVICE( consumer ), "Could not allocate log buffer\n" );
 959                                         else
 960                                         {
 961                                                 if ( size >= 0 )
 962                                                 {
 963                                                         size = fread( logbuffer, 1, size, f );
 964                                                         logbuffer[size] = '\0';
 965                                                         c->stats_in = logbuffer;
 966                                                 }
 967                                         }
 968                                         fclose( f );
 969                                 }
 970                         }
 971                 }
 972         }
 973         else
 974         {
 975                 mlt_log_error( MLT_CONSUMER_SERVICE( consumer ), "Could not allocate a stream for video\n" );
 976         }
 977
 978         return st;
 979 }
 980
 981 static AVFrame *alloc_picture( int pix_fmt, int width, int height )
 982 {
 983         // Allocate a frame
 984         AVFrame *picture = avcodec_alloc_frame();
 985
 986         // Determine size of the
 987         int size = avpicture_get_size(pix_fmt, width, height);
 988
 989         // Allocate the picture buf
 990         uint8_t *picture_buf = av_malloc(size);
 991
 992         // If we have both, then fill the image
 993         if ( picture != NULL && picture_buf != NULL )
 994         {
 995                 // Fill the frame with the allocated buffer
 996                 avpicture_fill( (AVPicture *)picture, picture_buf, pix_fmt, width, height);
 997         }
 998         else
 999         {
1000                 // Something failed - clean up what we can
1001                 av_free( picture );
1002                 av_free( picture_buf );
1003                 picture = NULL;
1004         }
1005
1006         return picture;
1007 }
1008
1009 static int open_video( mlt_properties properties, AVFormatContext *oc, AVStream *st, const char *codec_name )
1010 {
1011         // Get the codec
1012         AVCodecContext *video_enc = st->codec;
1013
1014         // find the video encoder
1015         AVCodec *codec;
1016         if ( codec_name )
1017                 codec = avcodec_find_encoder_by_name( codec_name );
1018         else
1019                 codec = avcodec_find_encoder( video_enc->codec_id );
1020
1021         // Process properties as AVOptions on the AVCodec
1022         if ( codec && codec->priv_class )
1023         {
1024                 char *vpre = mlt_properties_get( properties, "vpre" );
1025                 if ( !video_enc->priv_data && codec->priv_data_size )
1026                 {
1027                         video_enc->priv_data = av_mallocz( codec->priv_data_size );
1028                         *(const AVClass **) video_enc->priv_data = codec->priv_class;
1029 //                      av_opt_set_defaults( video_enc );
1030                 }
1031                 if ( vpre )
1032                 {
1033                         mlt_properties p = mlt_properties_load( vpre );
1034                         apply_properties( video_enc->priv_data, p, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM );
1035                         mlt_properties_close( p );
1036                 }
1037                 apply_properties( video_enc->priv_data, properties, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM );
1038         }
1039
1040         if( codec && codec->pix_fmts )
1041         {
1042                 const enum PixelFormat *p = codec->pix_fmts;
1043                 for( ; *p!=-1; p++ )
1044                 {
1045                         if( *p == video_enc->pix_fmt )
1046                                 break;
1047                 }
1048                 if( *p == -1 )
1049                         video_enc->pix_fmt = codec->pix_fmts[ 0 ];
1050         }
1051
1052 #if LIBAVCODEC_VERSION_INT >= ((53<<16)+(8<<8)+0)
1053         int result = codec && avcodec_open2( video_enc, codec, NULL ) >= 0;
1054 #else
1055         int result = codec && avcodec_open( video_enc, codec ) >= 0;
1056 #endif
1057
1058         return result;
1059 }
1060
1061 void close_video(AVFormatContext *oc, AVStream *st)
1062 {
1063         if ( st && st->codec )
1064         {
1065                 av_freep( &st->codec->stats_in );
1066                 avcodec_close(st->codec);
1067         }
1068 }
1069
1070 static inline long time_difference( struct timeval *time1 )
1071 {
1072         struct timeval time2;
1073         gettimeofday( &time2, NULL );
1074         return time2.tv_sec * 1000000 + time2.tv_usec - time1->tv_sec * 1000000 - time1->tv_usec;
1075 }
1076
1077 static int mlt_write(void *h, uint8_t *buf, int size)
1078 {
1079         mlt_properties properties = (mlt_properties) h;
1080         mlt_events_fire( properties, "avformat-write", buf, size, NULL );
1081         return 0;
1082 }
1083
1084 static void write_transmitter( mlt_listener listener, mlt_properties owner, mlt_service service, void **args )
1085 {
1086         listener( owner, service, (uint8_t*) args[0], (int) args[1] );
1087 }
1088
1089 /** The main thread - the argument is simply the consumer.
1090 */
1091
1092 static void *consumer_thread( void *arg )
1093 {
1094         // Map the argument to the object
1095         mlt_consumer consumer = arg;
1096
1097         // Get the properties
1098         mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
1099
1100         // Get the terminate on pause property
1101         int terminate_on_pause = mlt_properties_get_int( properties, "terminate_on_pause" );
1102         int terminated = 0;
1103
1104         // Determine if feed is slow (for realtime stuff)
1105         int real_time_output = mlt_properties_get_int( properties, "real_time" );
1106
1107         // Time structures
1108         struct timeval ante;
1109
1110         // Get the frame rate
1111         double fps = mlt_properties_get_double( properties, "fps" );
1112
1113         // Get width and height
1114         int width = mlt_properties_get_int( properties, "width" );
1115         int height = mlt_properties_get_int( properties, "height" );
1116         int img_width = width;
1117         int img_height = height;
1118
1119         // Get default audio properties
1120         int channels = mlt_properties_get_int( properties, "channels" );
1121         int total_channels = channels;
1122         int frequency = mlt_properties_get_int( properties, "frequency" );
1123         void *pcm = NULL;
1124         int samples = 0;
1125
1126         // AVFormat audio buffer and frame size
1127         int audio_outbuf_size = AUDIO_BUFFER_SIZE;
1128         uint8_t *audio_outbuf = av_malloc( audio_outbuf_size );
1129         int audio_input_nb_samples = 0;
1130
1131         // AVFormat video buffer and frame count
1132         int frame_count = 0;
1133         int video_outbuf_size = VIDEO_BUFFER_SIZE;
1134         uint8_t *video_outbuf = av_malloc( video_outbuf_size );
1135
1136         // Used for the frame properties
1137         mlt_frame frame = NULL;
1138         mlt_properties frame_properties = NULL;
1139
1140         // Get the queues
1141         mlt_deque queue = mlt_properties_get_data( properties, "frame_queue", NULL );
1142         sample_fifo fifo = mlt_properties_get_data( properties, "sample_fifo", NULL );
1143
1144         // For receiving images from an mlt_frame
1145         uint8_t *image;
1146         mlt_image_format img_fmt = mlt_image_yuv422;
1147         // Get the image format to use for rendering threads
1148         const char* img_fmt_name = mlt_properties_get( properties, "mlt_image_format" );
1149         if ( img_fmt_name )
1150         {
1151                 if ( !strcmp( img_fmt_name, "rgb24" ) )
1152                         img_fmt = mlt_image_rgb24;
1153                 else if ( !strcmp( img_fmt_name, "rgb24a" ) )
1154                         img_fmt = mlt_image_rgb24a;
1155                 else if ( !strcmp( img_fmt_name, "yuv420p" ) )
1156                         img_fmt = mlt_image_yuv420p;
1157         }
1158         else if ( mlt_properties_get( properties, "pix_fmt" ) )
1159         {
1160                 img_fmt_name = mlt_properties_get( properties, "pix_fmt" );
1161                 if ( !strcmp( img_fmt_name, "rgba" ) ||
1162                      !strcmp( img_fmt_name, "argb" ) ||
1163                      !strcmp( img_fmt_name, "bgra" ) )
1164                         img_fmt = mlt_image_rgb24a;
1165         }
1166
1167         // Need two av pictures for converting
1168         AVFrame *converted_avframe = NULL;
1169         AVFrame *audio_avframe = NULL;
1170         AVFrame *video_avframe = alloc_picture( pick_pix_fmt( img_fmt ), width, height );
1171
1172         // For receiving audio samples back from the fifo
1173         uint8_t *audio_buf_1 = av_malloc( AUDIO_ENCODE_BUFFER_SIZE );
1174         uint8_t *audio_buf_2 = NULL;
1175         int count = 0;
1176
1177         // Allocate the context
1178         AVFormatContext *oc = avformat_alloc_context( );
1179
1180         // Streams
1181         AVStream *video_st = NULL;
1182         AVStream *audio_st[ MAX_AUDIO_STREAMS ];
1183
1184         // Time stamps
1185         double audio_pts = 0;
1186         double video_pts = 0;
1187
1188         // Frames dispatched
1189         long int frames = 0;
1190         long int total_time = 0;
1191
1192         // Determine the format
1193         AVOutputFormat *fmt = NULL;
1194         const char *filename = mlt_properties_get( properties, "target" );
1195         char *format = mlt_properties_get( properties, "f" );
1196         char *vcodec = mlt_properties_get( properties, "vcodec" );
1197         char *acodec = mlt_properties_get( properties, "acodec" );
1198         AVCodec *audio_codec = NULL;
1199         AVCodec *video_codec = NULL;
1200
1201         // Used to store and override codec ids
1202         int audio_codec_id;
1203         int video_codec_id;
1204
1205         // Misc
1206         char key[27];
1207         mlt_properties frame_meta_properties = mlt_properties_new();
1208         int error_count = 0;
1209
1210         // Initialize audio_st
1211         int i = MAX_AUDIO_STREAMS;
1212         while ( i-- )
1213                 audio_st[i] = NULL;
1214
1215         // Check for user selected format first
1216         if ( format != NULL )
1217                 fmt = av_guess_format( format, NULL, NULL );
1218
1219         // Otherwise check on the filename
1220         if ( fmt == NULL && filename != NULL )
1221                 fmt = av_guess_format( NULL, filename, NULL );
1222
1223         // Otherwise default to mpeg
1224         if ( fmt == NULL )
1225                 fmt = av_guess_format( "mpeg", NULL, NULL );
1226
1227         // We need a filename - default to stdout?
1228         if ( filename == NULL || !strcmp( filename, "" ) )
1229                 filename = "pipe:";
1230
1231         // Get the codec ids selected
1232         audio_codec_id = fmt->audio_codec;
1233         video_codec_id = fmt->video_codec;
1234
1235         // Check for audio codec overides
1236         if ( ( acodec && strcmp( acodec, "none" ) == 0 ) || mlt_properties_get_int( properties, "an" ) )
1237                 audio_codec_id = AV_CODEC_ID_NONE;
1238         else if ( acodec )
1239         {
1240                 audio_codec = avcodec_find_encoder_by_name( acodec );
1241                 if ( audio_codec )
1242                 {
1243                         audio_codec_id = audio_codec->id;
1244                         if ( audio_codec_id == AV_CODEC_ID_AC3 && avcodec_find_encoder_by_name( "ac3_fixed" ) )
1245                         {
1246                                 mlt_properties_set( properties, "_acodec", "ac3_fixed" );
1247                                 acodec = mlt_properties_get( properties, "_acodec" );
1248                                 audio_codec = avcodec_find_encoder_by_name( acodec );
1249                         }
1250                         else if ( !strcmp( acodec, "aac" ) )
1251                         {
1252                                 mlt_properties_set( properties, "astrict", "experimental" );
1253                         }
1254                 }
1255                 else
1256                 {
1257                         audio_codec_id = AV_CODEC_ID_NONE;
1258                         mlt_log_warning( MLT_CONSUMER_SERVICE( consumer ), "audio codec %s unrecognised - ignoring\n", acodec );
1259                 }
1260         }
1261         else
1262         {
1263                 audio_codec = avcodec_find_encoder( audio_codec_id );
1264         }
1265
1266         // Check for video codec overides
1267         if ( ( vcodec && strcmp( vcodec, "none" ) == 0 ) || mlt_properties_get_int( properties, "vn" ) )
1268                 video_codec_id = AV_CODEC_ID_NONE;
1269         else if ( vcodec )
1270         {
1271                 video_codec = avcodec_find_encoder_by_name( vcodec );
1272                 if ( video_codec )
1273                 {
1274                         video_codec_id = video_codec->id;
1275                 }
1276                 else
1277                 {
1278                         video_codec_id = AV_CODEC_ID_NONE;
1279                         mlt_log_warning( MLT_CONSUMER_SERVICE( consumer ), "video codec %s unrecognised - ignoring\n", vcodec );
1280                 }
1281         }
1282         else
1283         {
1284                 video_codec = avcodec_find_encoder( video_codec_id );
1285         }
1286
1287         // Write metadata
1288         for ( i = 0; i < mlt_properties_count( properties ); i++ )
1289         {
1290                 char *name = mlt_properties_get_name( properties, i );
1291                 if ( name && !strncmp( name, "meta.attr.", 10 ) )
1292                 {
1293                         char *key = strdup( name + 10 );
1294                         char *markup = strrchr( key, '.' );
1295                         if ( markup && !strcmp( markup, ".markup") )
1296                         {
1297                                 markup[0] = '\0';
1298                                 if ( !strstr( key, ".stream." ) )
1299 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(8<<8)+0)
1300                                         av_dict_set( &oc->metadata, key, mlt_properties_get_value( properties, i ), 0 );
1301 #else
1302                                         av_metadata_set2( &oc->metadata, key, mlt_properties_get_value( properties, i ), 0 );
1303 #endif
1304                         }
1305                         free( key );
1306                 }
1307         }
1308
1309         oc->oformat = fmt;
1310         snprintf( oc->filename, sizeof(oc->filename), "%s", filename );
1311
1312         // Get a frame now, so we can set some AVOptions from properties.
1313         frame = mlt_consumer_rt_frame( consumer );
1314
1315         // Set the timecode from the MLT metadata if available.
1316     if ( frame )
1317     {
1318         const char *timecode = mlt_properties_get( MLT_FRAME_PROPERTIES(frame), "meta.attr.vitc.markup" );
1319         if ( timecode && strcmp( timecode, "" ) )
1320         {
1321             mlt_properties_set( properties, "timecode", timecode );
1322             if ( strchr( timecode, ';' ) )
1323                 mlt_properties_set_int( properties, "drop_frame_timecode", 1 );
1324         }
1325     }
1326
1327         // Add audio and video streams
1328         if ( video_codec_id != AV_CODEC_ID_NONE )
1329                 video_st = add_video_stream( consumer, oc, video_codec );
1330         if ( audio_codec_id != AV_CODEC_ID_NONE )
1331         {
1332                 int is_multi = 0;
1333
1334                 total_channels = 0;
1335                 // multitrack audio
1336                 for ( i = 0; i < MAX_AUDIO_STREAMS; i++ )
1337                 {
1338                         sprintf( key, "channels.%d", i );
1339                         int j = mlt_properties_get_int( properties, key );
1340                         if ( j )
1341                         {
1342                                 is_multi = 1;
1343                                 total_channels += j;
1344                                 audio_st[i] = add_audio_stream( consumer, oc, audio_codec, j );
1345                         }
1346                 }
1347                 // single track
1348                 if ( !is_multi )
1349                 {
1350                         audio_st[0] = add_audio_stream( consumer, oc, audio_codec, channels );
1351                         total_channels = channels;
1352                 }
1353         }
1354         mlt_properties_set_int( properties, "channels", total_channels );
1355
1356         // Audio format is determined when adding the audio stream
1357         mlt_audio_format aud_fmt = mlt_audio_none;
1358         if ( audio_st[0] )
1359                 aud_fmt = get_mlt_audio_format( audio_st[0]->codec->sample_fmt );
1360         int sample_bytes = mlt_audio_format_size( aud_fmt, 1, 1 );
1361         sample_bytes = sample_bytes ? sample_bytes : 1; // prevent divide by zero
1362
1363         // Set the parameters (even though we have none...)
1364 #if LIBAVFORMAT_VERSION_INT < ((53<<16)+(2<<8)+0)
1365         if ( av_set_parameters(oc, NULL) >= 0 )
1366 #endif
1367         {
1368 #if LIBAVFORMAT_VERSION_MAJOR >= 53
1369                 if ( mlt_properties_get( properties, "muxpreload" ) && ! mlt_properties_get( properties, "preload" ) )
1370                         mlt_properties_set_double( properties, "preload", mlt_properties_get_double( properties, "muxpreload" ) );
1371 #else
1372                 oc->preload = ( int )( mlt_properties_get_double( properties, "muxpreload" ) * AV_TIME_BASE );
1373 #endif
1374                 oc->max_delay= ( int )( mlt_properties_get_double( properties, "muxdelay" ) * AV_TIME_BASE );
1375
1376                 // Process properties as AVOptions
1377                 char *fpre = mlt_properties_get( properties, "fpre" );
1378                 if ( fpre )
1379                 {
1380                         mlt_properties p = mlt_properties_load( fpre );
1381                         apply_properties( oc, p, AV_OPT_FLAG_ENCODING_PARAM );
1382                         if ( oc->oformat && oc->oformat->priv_class && oc->priv_data )
1383                                 apply_properties( oc->priv_data, p, AV_OPT_FLAG_ENCODING_PARAM );
1384                         mlt_properties_close( p );
1385                 }
1386                 apply_properties( oc, properties, AV_OPT_FLAG_ENCODING_PARAM );
1387                 if ( oc->oformat && oc->oformat->priv_class && oc->priv_data )
1388                         apply_properties( oc->priv_data, properties, AV_OPT_FLAG_ENCODING_PARAM );
1389
1390                 if ( video_st && !open_video( properties, oc, video_st, vcodec? vcodec : NULL ) )
1391                         video_st = NULL;
1392                 for ( i = 0; i < MAX_AUDIO_STREAMS && audio_st[i]; i++ )
1393                 {
1394                         audio_input_nb_samples = open_audio( properties, oc, audio_st[i], audio_outbuf_size,
1395                                 acodec? acodec : NULL );
1396                         if ( !audio_input_nb_samples )
1397                         {
1398                                 // Remove the audio stream from the output context
1399                                 int j;
1400                                 for ( j = 0; j < oc->nb_streams; j++ )
1401                                 {
1402                                         if ( oc->streams[j] == audio_st[i] )
1403                                                 av_freep( &oc->streams[j] );
1404                                 }
1405                                 --oc->nb_streams;
1406                                 audio_st[i] = NULL;
1407                         }
1408                 }
1409
1410                 // Setup custom I/O if redirecting
1411                 if ( mlt_properties_get_int( properties, "redirect" ) )
1412                 {
1413                         int buffer_size = 32768;
1414                         unsigned char *buffer = av_malloc( buffer_size );
1415 #if LIBAVFORMAT_VERSION_MAJOR >= 53
1416                         AVIOContext* io = avio_alloc_context( buffer, buffer_size, 1, properties, NULL, mlt_write, NULL );
1417 #else
1418                         ByteIOContext* io = av_alloc_put_byte( buffer, buffer_size, 1, properties, NULL, mlt_write, NULL );
1419 #endif
1420                         if ( buffer && io )
1421                         {
1422                                 oc->pb = io;
1423 #if LIBAVFORMAT_VERSION_MAJOR >= 53
1424                                 oc->flags |= AVFMT_FLAG_CUSTOM_IO;
1425 #endif
1426                                 mlt_properties_set_data( properties, "avio_buffer", buffer, buffer_size, av_free, NULL );
1427                                 mlt_properties_set_data( properties, "avio_context", io, 0, av_free, NULL );
1428                                 mlt_events_register( properties, "avformat-write", (mlt_transmitter) write_transmitter );
1429                         }
1430                         else
1431                         {
1432                                 av_free( buffer );
1433                                 mlt_log_error( MLT_CONSUMER_SERVICE(consumer), "failed to setup output redirection\n" );
1434                         }
1435                 }
1436                 // Open the output file, if needed
1437                 else if ( !( fmt->flags & AVFMT_NOFILE ) )
1438                 {
1439 #if LIBAVFORMAT_VERSION_MAJOR >= 53
1440                         if ( avio_open( &oc->pb, filename, AVIO_FLAG_WRITE ) < 0 )
1441 #else
1442                         if ( url_fopen( &oc->pb, filename, URL_WRONLY ) < 0 )
1443 #endif
1444                         {
1445                                 mlt_log_error( MLT_CONSUMER_SERVICE( consumer ), "Could not open '%s'\n", filename );
1446                                 mlt_events_fire( properties, "consumer-fatal-error", NULL );
1447                                 goto on_fatal_error;
1448                         }
1449                 }
1450
1451                 // Write the stream header.
1452                 if ( mlt_properties_get_int( properties, "running" ) )
1453 #if LIBAVFORMAT_VERSION_INT >= ((53<<16)+(2<<8)+0)
1454                         avformat_write_header( oc, NULL );
1455 #else
1456                         av_write_header( oc );
1457 #endif
1458         }
1459 #if LIBAVFORMAT_VERSION_INT < ((53<<16)+(2<<8)+0)
1460         else
1461         {
1462                 mlt_log_error( MLT_CONSUMER_SERVICE( consumer ), "Invalid output format parameters\n" );
1463                 mlt_events_fire( properties, "consumer-fatal-error", NULL );
1464                 goto on_fatal_error;
1465         }
1466 #endif
1467
1468         // Last check - need at least one stream
1469         if ( !audio_st[0] && !video_st )
1470         {
1471                 mlt_events_fire( properties, "consumer-fatal-error", NULL );
1472                 goto on_fatal_error;
1473         }
1474
1475         // Allocate picture
1476         if ( video_st )
1477                 converted_avframe = alloc_picture( video_st->codec->pix_fmt, width, height );
1478
1479 #if LIBAVCODEC_VERSION_MAJOR >= 55
1480         // Allocate audio AVFrame
1481         if ( audio_st[0] )
1482         {
1483                 audio_avframe = avcodec_alloc_frame();
1484                 if ( audio_avframe ) {
1485                         AVCodecContext *c = audio_st[0]->codec;
1486                         audio_avframe->format = c->sample_fmt;
1487                         audio_avframe->nb_samples = audio_input_nb_samples;
1488                         audio_avframe->channel_layout = c->channel_layout;
1489                 } else {
1490                         mlt_log_error( MLT_CONSUMER_SERVICE(consumer), "failed to allocate audio AVFrame\n" );
1491                         mlt_events_fire( properties, "consumer-fatal-error", NULL );
1492                         goto on_fatal_error;
1493                 }
1494         }
1495 #endif
1496
1497         // Get the starting time (can ignore the times above)
1498         gettimeofday( &ante, NULL );
1499
1500         // Loop while running
1501         while( mlt_properties_get_int( properties, "running" ) &&
1502                ( !terminated || ( video_st && mlt_deque_count( queue ) ) ) )
1503         {
1504                 if ( !frame )
1505                         frame = mlt_consumer_rt_frame( consumer );
1506
1507                 // Check that we have a frame to work with
1508                 if ( frame != NULL )
1509                 {
1510                         // Increment frames dispatched
1511                         frames ++;
1512
1513                         // Default audio args
1514                         frame_properties = MLT_FRAME_PROPERTIES( frame );
1515
1516                         // Check for the terminated condition
1517                         terminated = terminate_on_pause && mlt_properties_get_double( frame_properties, "_speed" ) == 0.0;
1518
1519                         // Get audio and append to the fifo
1520                         if ( !terminated && audio_st[0] )
1521                         {
1522                                 samples = mlt_sample_calculator( fps, frequency, count ++ );
1523                                 channels = total_channels;
1524                                 mlt_frame_get_audio( frame, &pcm, &aud_fmt, &frequency, &channels, &samples );
1525
1526                                 // Save the audio channel remap properties for later
1527                                 mlt_properties_pass( frame_meta_properties, frame_properties, "meta.map.audio." );
1528
1529                                 // Create the fifo if we don't have one
1530                                 if ( fifo == NULL )
1531                                 {
1532                                         fifo = sample_fifo_init( frequency, channels );
1533                                         mlt_properties_set_data( properties, "sample_fifo", fifo, 0, ( mlt_destructor )sample_fifo_close, NULL );
1534                                 }
1535                                 if ( pcm )
1536                                 {
1537                                         // Silence if not normal forward speed
1538                                         if ( mlt_properties_get_double( frame_properties, "_speed" ) != 1.0 )
1539                                                 memset( pcm, 0, samples * channels * sample_bytes );
1540
1541                                         // Append the samples
1542                                         sample_fifo_append( fifo, pcm, samples * channels * sample_bytes );
1543                                         total_time += ( samples * 1000000 ) / frequency;
1544                                 }
1545                                 if ( !video_st )
1546                                         mlt_events_fire( properties, "consumer-frame-show", frame, NULL );
1547                         }
1548
1549                         // Encode the image
1550                         if ( !terminated && video_st )
1551                                 mlt_deque_push_back( queue, frame );
1552                         else
1553                                 mlt_frame_close( frame );
1554                         frame = NULL;
1555                 }
1556
1557                 // While we have stuff to process, process...
1558                 while ( 1 )
1559                 {
1560                         // Write interleaved audio and video frames
1561                         if ( !video_st || ( video_st && audio_st[0] && audio_pts < video_pts ) )
1562                         {
1563                                 // Write audio
1564                                 if ( ( video_st && terminated ) || ( channels * audio_input_nb_samples ) < sample_fifo_used( fifo ) / sample_bytes )
1565                                 {
1566                                         int j = 0; // channel offset into interleaved source buffer
1567                                         int n = FFMIN( FFMIN( channels * audio_input_nb_samples, sample_fifo_used( fifo ) / sample_bytes ), AUDIO_ENCODE_BUFFER_SIZE );
1568
1569                                         // Get the audio samples
1570                                         if ( n > 0 )
1571                                         {
1572                                                 sample_fifo_fetch( fifo, audio_buf_1, n * sample_bytes );
1573                                         }
1574                                         else if ( audio_codec_id == AV_CODEC_ID_VORBIS && terminated )
1575                                         {
1576                                                 // This prevents an infinite loop when some versions of vorbis do not
1577                                                 // increment pts when encoding silence.
1578                                                 audio_pts = video_pts;
1579                                                 break;
1580                                         }
1581                                         else
1582                                         {
1583                                                 memset( audio_buf_1, 0, AUDIO_ENCODE_BUFFER_SIZE );
1584                                         }
1585                                         samples = n / channels;
1586
1587                                         // For each output stream
1588                                         for ( i = 0; i < MAX_AUDIO_STREAMS && audio_st[i] && j < total_channels; i++ )
1589                                         {
1590                                                 AVStream *stream = audio_st[i];
1591                                                 AVCodecContext *codec = stream->codec;
1592                                                 AVPacket pkt;
1593
1594                                                 av_init_packet( &pkt );
1595                                                 pkt.data = audio_outbuf;
1596                                                 pkt.size = audio_outbuf_size;
1597
1598                                                 // Optimized for single track and no channel remap
1599                                                 if ( !audio_st[1] && !mlt_properties_count( frame_meta_properties ) )
1600                                                 {
1601                                                         void* p = audio_buf_1;
1602 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(17<<8)+0)
1603                                                         if ( codec->sample_fmt == AV_SAMPLE_FMT_FLTP )
1604                                                                 p = interleaved_to_planar( samples, channels, p, sizeof( float ) );
1605                                                         else if ( codec->sample_fmt == AV_SAMPLE_FMT_S16P )
1606                                                                 p = interleaved_to_planar( samples, channels, p, sizeof( int16_t ) );
1607                                                         else if ( codec->sample_fmt == AV_SAMPLE_FMT_S32P )
1608                                                                 p = interleaved_to_planar( samples, channels, p, sizeof( int32_t ) );
1609                                                         else if ( codec->sample_fmt == AV_SAMPLE_FMT_U8P )
1610                                                                 p = interleaved_to_planar( samples, channels, p, sizeof( uint8_t ) );
1611 #endif
1612 #if LIBAVCODEC_VERSION_MAJOR >= 55
1613                                                         audio_avframe->nb_samples = FFMAX( samples, audio_input_nb_samples );
1614                                                         avcodec_fill_audio_frame( audio_avframe, codec->channels, codec->sample_fmt,
1615                                                                 (const uint8_t*) p, AUDIO_ENCODE_BUFFER_SIZE, 0 );
1616                                                         int got_packet = 0;
1617                                                         int ret = avcodec_encode_audio2( codec, &pkt, audio_avframe, &got_packet );
1618                                                         if ( ret < 0 )
1619                                                                 pkt.size = ret;
1620                                                         else if ( !got_packet )
1621                                                                 pkt.size = 0;
1622 #else
1623                                                         codec->frame_size = FFMAX( samples, audio_input_nb_samples );
1624                                                         pkt.size = avcodec_encode_audio( codec, audio_outbuf, audio_outbuf_size, p );
1625                                                         pkt.pts = codec->coded_frame? codec->coded_frame->pts : AV_NOPTS_VALUE;
1626                                                         pkt.flags |= PKT_FLAG_KEY;
1627 #endif
1628
1629 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(17<<8)+0)
1630                                                         if ( p != audio_buf_1 )
1631                                                                 mlt_pool_release( p );
1632 #endif
1633                                                 }
1634                                                 else
1635                                                 {
1636                                                         // Extract the audio channels according to channel mapping
1637                                                         int dest_offset = 0; // channel offset into interleaved dest buffer
1638
1639                                                         // Get the number of channels for this stream
1640                                                         sprintf( key, "channels.%d", i );
1641                                                         int current_channels = mlt_properties_get_int( properties, key );
1642
1643                                                         // Clear the destination audio buffer.
1644                                                         if ( !audio_buf_2 )
1645                                                                 audio_buf_2 = av_mallocz( AUDIO_ENCODE_BUFFER_SIZE );
1646                                                         else
1647                                                                 memset( audio_buf_2, 0, AUDIO_ENCODE_BUFFER_SIZE );
1648
1649                                                         // For each output channel
1650                                                         while ( dest_offset < current_channels && j < total_channels )
1651                                                         {
1652                                                                 int map_start = -1, map_channels = 0;
1653                                                                 int source_offset = 0;
1654                                                                 int k;
1655
1656                                                                 // Look for a mapping that starts at j
1657                                                                 for ( k = 0; k < (MAX_AUDIO_STREAMS * 2) && map_start != j; k++ )
1658                                                                 {
1659                                                                         sprintf( key, "%d.channels", k );
1660                                                                         map_channels = mlt_properties_get_int( frame_meta_properties, key );
1661                                                                         sprintf( key, "%d.start", k );
1662                                                                         if ( mlt_properties_get( frame_meta_properties, key ) )
1663                                                                                 map_start = mlt_properties_get_int( frame_meta_properties, key );
1664                                                                         if ( map_start != j )
1665                                                                                 source_offset += map_channels;
1666                                                                 }
1667
1668                                                                 // If no mapping
1669                                                                 if ( map_start != j )
1670                                                                 {
1671                                                                         map_channels = current_channels;
1672                                                                         source_offset = j;
1673                                                                 }
1674
1675                                                                 // Copy samples if source offset valid
1676                                                                 if ( source_offset < channels )
1677                                                                 {
1678                                                                         // Interleave the audio buffer with the # channels for this stream/mapping.
1679                                                                         for ( k = 0; k < map_channels; k++, j++, source_offset++, dest_offset++ )
1680                                                                         {
1681                                                                                 void *src = audio_buf_1 + source_offset * sample_bytes;
1682                                                                                 void *dest = audio_buf_2 + dest_offset * sample_bytes;
1683                                                                                 int s = samples + 1;
1684
1685                                                                                 while ( --s ) {
1686                                                                                         memcpy( dest, src, sample_bytes );
1687                                                                                         dest += current_channels * sample_bytes;
1688                                                                                         src += channels * sample_bytes;
1689                                                                                 }
1690                                                                         }
1691                                                                 }
1692                                                                 // Otherwise silence
1693                                                                 else
1694                                                                 {
1695                                                                         j += current_channels;
1696                                                                         dest_offset += current_channels;
1697                                                                 }
1698                                                         }
1699 #if LIBAVCODEC_VERSION_MAJOR >= 55
1700                                                         audio_avframe->nb_samples = FFMAX( samples, audio_input_nb_samples );
1701                                                         avcodec_fill_audio_frame( audio_avframe, codec->channels, codec->sample_fmt,
1702                                                                 (const uint8_t*) audio_buf_2, AUDIO_ENCODE_BUFFER_SIZE, 0 );
1703                                                         int got_packet = 0;
1704                                                         int ret = avcodec_encode_audio2( codec, &pkt, audio_avframe, &got_packet );
1705                                                         if ( ret < 0 )
1706                                                                 pkt.size = ret;
1707                                                         else if ( !got_packet )
1708                                                                 pkt.size = 0;
1709 #else
1710                                                         codec->frame_size = FFMAX( samples, audio_input_nb_samples );
1711                                                         pkt.size = avcodec_encode_audio( codec, audio_outbuf, audio_outbuf_size, (short*) audio_buf_2 );
1712                                                         pkt.pts = codec->coded_frame? codec->coded_frame->pts : AV_NOPTS_VALUE;
1713                                                         pkt.flags |= PKT_FLAG_KEY;
1714 #endif
1715                                                 }
1716
1717                                                 if ( pkt.size > 0 )
1718                                                 {
1719                                                         // Write the compressed frame in the media file
1720                                                         if ( pkt.pts != AV_NOPTS_VALUE )
1721                                                                 pkt.pts = av_rescale_q( pkt.pts, codec->time_base, stream->time_base );
1722 #if LIBAVCODEC_VERSION_MAJOR >= 55
1723                                                         if ( pkt.dts != AV_NOPTS_VALUE )
1724                                                                 pkt.dts = av_rescale_q( pkt.dts, codec->time_base, stream->time_base );
1725                                                         if ( pkt.duration > 0 )
1726                                                                 pkt.duration = av_rescale_q( pkt.duration, codec->time_base, stream->time_base );
1727 #endif
1728                                                         pkt.stream_index = stream->index;
1729                                                         if ( av_interleaved_write_frame( oc, &pkt ) )
1730                                                         {
1731                                                                 mlt_log_fatal( MLT_CONSUMER_SERVICE( consumer ), "error writing audio frame\n" );
1732                                                                 mlt_events_fire( properties, "consumer-fatal-error", NULL );
1733                                                                 goto on_fatal_error;
1734                                                         }
1735                                                         error_count = 0;
1736                                                 }
1737                                                 else if ( pkt.size < 0 )
1738                                                 {
1739                                                         mlt_log_warning( MLT_CONSUMER_SERVICE( consumer ), "error with audio encode %d\n", frame_count );
1740                                                         if ( ++error_count > 2 )
1741                                                                 goto on_fatal_error;
1742                                                 }
1743
1744                                                 mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), " frame_size %d\n", codec->frame_size );
1745                                                 if ( i == 0 )
1746                                                 {
1747                                                         audio_pts = (double)stream->pts.val * av_q2d( stream->time_base );
1748                                                 }
1749                                         }
1750                                 }
1751                                 else
1752                                 {
1753                                         break;
1754                                 }
1755                         }
1756                         else if ( video_st )
1757                         {
1758                                 // Write video
1759                                 if ( mlt_deque_count( queue ) )
1760                                 {
1761                                         int ret = 0;
1762                                         AVCodecContext *c = video_st->codec;
1763
1764                                         frame = mlt_deque_pop_front( queue );
1765                                         frame_properties = MLT_FRAME_PROPERTIES( frame );
1766
1767                                         if ( mlt_properties_get_int( frame_properties, "rendered" ) )
1768                                         {
1769                                                 int i = 0;
1770                                                 uint8_t *p;
1771                                                 uint8_t *q;
1772                                                 int stride = mlt_image_format_size( img_fmt, width, 0, NULL );
1773
1774                                                 mlt_frame_get_image( frame, &image, &img_fmt, &img_width, &img_height, 0 );
1775                                                 q = image;
1776
1777                                                 // Convert the mlt frame to an AVPicture
1778                                                 if ( img_fmt == mlt_image_yuv420p )
1779                                                 {
1780                                                         memcpy( video_avframe->data[0], q, video_avframe->linesize[0] );
1781                                                         q += stride;
1782                                                         memcpy( video_avframe->data[1], q, video_avframe->linesize[1] );
1783                                                         q += stride / 4;
1784                                                         memcpy( video_avframe->data[2], q, video_avframe->linesize[2] );
1785                                                 }
1786                                                 else for ( i = 0; i < height; i ++ )
1787                                                 {
1788                                                         p = video_avframe->data[0] + i * video_avframe->linesize[0];
1789                                                         memcpy( p, q, stride );
1790                                                         q += stride;
1791                                                 }
1792
1793                                                 // Do the colour space conversion
1794                                                 int flags = SWS_BICUBIC;
1795 #ifdef USE_MMX
1796                                                 flags |= SWS_CPU_CAPS_MMX;
1797 #endif
1798 #ifdef USE_SSE
1799                                                 flags |= SWS_CPU_CAPS_MMX2;
1800 #endif
1801                                                 struct SwsContext *context = sws_getContext( width, height, pick_pix_fmt( img_fmt ),
1802                                                         width, height, c->pix_fmt, flags, NULL, NULL, NULL);
1803                                                 sws_scale( context, (const uint8_t* const*) video_avframe->data, video_avframe->linesize, 0, height,
1804                                                         converted_avframe->data, converted_avframe->linesize);
1805                                                 sws_freeContext( context );
1806
1807                                                 mlt_events_fire( properties, "consumer-frame-show", frame, NULL );
1808
1809                                                 // Apply the alpha if applicable
1810                                                 if ( !mlt_properties_get( properties, "mlt_image_format" ) ||
1811                                                      strcmp( mlt_properties_get( properties, "mlt_image_format" ), "rgb24a" ) )
1812                                                 if ( c->pix_fmt == PIX_FMT_RGBA ||
1813                                                      c->pix_fmt == PIX_FMT_ARGB ||
1814                                                      c->pix_fmt == PIX_FMT_BGRA )
1815                                                 {
1816                                                         uint8_t *alpha = mlt_frame_get_alpha_mask( frame );
1817                                                         register int n;
1818
1819                                                         for ( i = 0; i < height; i ++ )
1820                                                         {
1821                                                                 n = ( width + 7 ) / 8;
1822                                                                 p = converted_avframe->data[ 0 ] + i * converted_avframe->linesize[ 0 ] + 3;
1823
1824                                                                 switch( width % 8 )
1825                                                                 {
1826                                                                         case 0: do { *p = *alpha++; p += 4;
1827                                                                         case 7:          *p = *alpha++; p += 4;
1828                                                                         case 6:          *p = *alpha++; p += 4;
1829                                                                         case 5:          *p = *alpha++; p += 4;
1830                                                                         case 4:          *p = *alpha++; p += 4;
1831                                                                         case 3:          *p = *alpha++; p += 4;
1832                                                                         case 2:          *p = *alpha++; p += 4;
1833                                                                         case 1:          *p = *alpha++; p += 4;
1834                                                                                         }
1835                                                                                         while( --n );
1836                                                                 }
1837                                                         }
1838                                                 }
1839                                         }
1840
1841                                         if (oc->oformat->flags & AVFMT_RAWPICTURE)
1842                                         {
1843                                                 // raw video case. The API will change slightly in the near future for that
1844                                                 AVPacket pkt;
1845                                                 av_init_packet(&pkt);
1846
1847                                                 // Set frame interlace hints
1848                                                 c->coded_frame->interlaced_frame = !mlt_properties_get_int( frame_properties, "progressive" );
1849                                                 c->coded_frame->top_field_first = mlt_properties_get_int( frame_properties, "top_field_first" );
1850 #if LIBAVCODEC_VERSION_INT >= ((53<<16)+(61<<8)+100)
1851                                                 if ( mlt_properties_get_int( frame_properties, "progressive" ) )
1852                                                         c->field_order = AV_FIELD_PROGRESSIVE;
1853                                                 else
1854                                                         c->field_order = (mlt_properties_get_int( frame_properties, "top_field_first" )) ? AV_FIELD_TT : AV_FIELD_BB;
1855 #endif
1856                                                 pkt.flags |= PKT_FLAG_KEY;
1857                                                 pkt.stream_index = video_st->index;
1858                                                 pkt.data = (uint8_t *)converted_avframe;
1859                                                 pkt.size = sizeof(AVPicture);
1860
1861                                                 ret = av_write_frame(oc, &pkt);
1862                                                 video_pts += c->frame_size;
1863                                         }
1864                                         else
1865                                         {
1866                                                 AVPacket pkt;
1867                                                 av_init_packet( &pkt );
1868                                                 pkt.data = video_outbuf;
1869                                                 pkt.size = video_outbuf_size;
1870
1871                                                 // Set the quality
1872                                                 converted_avframe->quality = c->global_quality;
1873
1874                                                 // Set frame interlace hints
1875                                                 converted_avframe->interlaced_frame = !mlt_properties_get_int( frame_properties, "progressive" );
1876                                                 converted_avframe->top_field_first = mlt_properties_get_int( frame_properties, "top_field_first" );
1877                                                 converted_avframe->pts = frame_count;
1878
1879                                                 // Encode the image
1880 #if LIBAVCODEC_VERSION_MAJOR >= 55
1881                                                 int got_packet;
1882                                                 ret = avcodec_encode_video2( c, &pkt, converted_avframe, &got_packet );
1883                                                 if ( ret < 0 )
1884                                                         pkt.size = ret;
1885                                                 else if ( !got_packet )
1886                                                         pkt.size = 0;
1887 #else
1888                                                 pkt.size = avcodec_encode_video(c, video_outbuf, video_outbuf_size, converted_avframe );
1889                                                 pkt.pts = c->coded_frame? c->coded_frame->pts : AV_NOPTS_VALUE;
1890                                                 if ( c->coded_frame && c->coded_frame->key_frame )
1891                                                         pkt.flags |= PKT_FLAG_KEY;
1892 #endif
1893
1894                                                 // If zero size, it means the image was buffered
1895                                                 if ( pkt.size > 0 )
1896                                                 {
1897                                                         if ( pkt.pts != AV_NOPTS_VALUE )
1898                                                                 pkt.pts = av_rescale_q( pkt.pts, c->time_base, video_st->time_base );
1899 #if LIBAVCODEC_VERSION_MAJOR >= 55
1900                                                         if ( pkt.dts != AV_NOPTS_VALUE )
1901                                                                 pkt.dts = av_rescale_q( pkt.dts, c->time_base, video_st->time_base );
1902 #endif
1903                                                         pkt.stream_index = video_st->index;
1904
1905                                                         // write the compressed frame in the media file
1906                                                         ret = av_interleaved_write_frame(oc, &pkt);
1907                                                         mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), " frame_size %d\n", c->frame_size );
1908                                                         video_pts = (double)video_st->pts.val * av_q2d( video_st->time_base );
1909
1910                                                         // Dual pass logging
1911                                                         if ( mlt_properties_get_data( properties, "_logfile", NULL ) && c->stats_out )
1912                                                                 fprintf( mlt_properties_get_data( properties, "_logfile", NULL ), "%s", c->stats_out );
1913
1914                                                         error_count = 0;
1915                                                 }
1916                                                 else if ( pkt.size < 0 )
1917                                                 {
1918                                                         mlt_log_warning( MLT_CONSUMER_SERVICE( consumer ), "error with video encode %d\n", frame_count );
1919                                                         if ( ++error_count > 2 )
1920                                                                 goto on_fatal_error;
1921                                                         ret = 0;
1922                                                 }
1923                                         }
1924                                         frame_count++;
1925                                         if ( ret )
1926                                         {
1927                                                 mlt_log_fatal( MLT_CONSUMER_SERVICE( consumer ), "error writing video frame\n" );
1928                                                 mlt_events_fire( properties, "consumer-fatal-error", NULL );
1929                                                 goto on_fatal_error;
1930                                         }
1931                                         mlt_frame_close( frame );
1932                                         frame = NULL;
1933                                 }
1934                                 else
1935                                 {
1936                                         break;
1937                                 }
1938                         }
1939                         if ( audio_st[0] )
1940                                 mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), "audio pts %"PRId64" (%f) ", audio_st[0]->pts.val, audio_pts );
1941                         if ( video_st )
1942                                 mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), "video pts %"PRId64" (%f) ", video_st->pts.val, video_pts );
1943                         mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), "\n" );
1944                 }
1945
1946                 if ( real_time_output == 1 && frames % 2 == 0 )
1947                 {
1948                         long passed = time_difference( &ante );
1949                         if ( fifo != NULL )
1950                         {
1951                                 long pending = ( ( ( long )sample_fifo_used( fifo ) / sample_bytes * 1000 ) / frequency ) * 1000;
1952                                 passed -= pending;
1953                         }
1954                         if ( passed < total_time )
1955                         {
1956                                 long total = ( total_time - passed );
1957                                 struct timespec t = { total / 1000000, ( total % 1000000 ) * 1000 };
1958                                 nanosleep( &t, NULL );
1959                         }
1960                 }
1961         }
1962
1963         // Flush the encoder buffers
1964         if ( real_time_output <= 0 )
1965         {
1966                 // Flush audio fifo
1967                 // TODO: flush all audio streams
1968                 if ( audio_st[0] && audio_st[0]->codec->frame_size > 1 ) for (;;)
1969                 {
1970                         AVCodecContext *c = audio_st[0]->codec;
1971                         AVPacket pkt;
1972                         av_init_packet( &pkt );
1973                         pkt.data = audio_outbuf;
1974                         pkt.size = 0;
1975
1976                         if ( fifo &&
1977                                 ( channels * audio_input_nb_samples < sample_fifo_used( fifo ) / sample_bytes ) )
1978                         {
1979                                 sample_fifo_fetch( fifo, audio_buf_1, channels * audio_input_nb_samples * sample_bytes );
1980                                 void* p = audio_buf_1;
1981 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(17<<8)+0)
1982                                 if ( c->sample_fmt == AV_SAMPLE_FMT_FLTP )
1983                                         p = interleaved_to_planar( audio_input_nb_samples, channels, p, sizeof( float ) );
1984                                 else if ( c->sample_fmt == AV_SAMPLE_FMT_S16P )
1985                                         p = interleaved_to_planar( audio_input_nb_samples, channels, p, sizeof( int16_t ) );
1986                                 else if ( c->sample_fmt == AV_SAMPLE_FMT_S32P )
1987                                         p = interleaved_to_planar( audio_input_nb_samples, channels, p, sizeof( int32_t ) );
1988                                 else if ( c->sample_fmt == AV_SAMPLE_FMT_U8P )
1989                                         p = interleaved_to_planar( audio_input_nb_samples, channels, p, sizeof( uint8_t ) );
1990 #endif
1991 #if LIBAVCODEC_VERSION_MAJOR >= 55
1992                                 pkt.size = audio_outbuf_size;
1993                                 audio_avframe->nb_samples = audio_input_nb_samples;
1994                                 avcodec_fill_audio_frame( audio_avframe, c->channels, c->sample_fmt,
1995                                         (const uint8_t*) p, AUDIO_ENCODE_BUFFER_SIZE, 0 );
1996                                 int got_packet = 0;
1997                                 int ret = avcodec_encode_audio2( c, &pkt, audio_avframe, &got_packet );
1998                                 if ( ret < 0 )
1999                                         pkt.size = ret;
2000                                 else if ( !got_packet )
2001                                         pkt.size = 0;
2002 #else
2003                                 c->frame_size = audio_input_nb_samples;
2004                                 pkt.size = avcodec_encode_audio( c, audio_outbuf, audio_outbuf_size, p );
2005 #endif
2006 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(17<<8)+0)
2007                                 if ( p != audio_buf_1 )
2008                                         mlt_pool_release( p );
2009 #endif
2010                         }
2011                         if ( pkt.size <= 0 ) {
2012 #if LIBAVCODEC_VERSION_MAJOR >= 55
2013                                 pkt.size = audio_outbuf_size;
2014                                 int got_packet = 0;
2015                                 int ret = avcodec_encode_audio2( c, &pkt, NULL, &got_packet );
2016                                 if ( ret < 0 )
2017                                         pkt.size = ret;
2018                                 else if ( !got_packet )
2019                                         pkt.size = 0;
2020 #else
2021                                 pkt.size = avcodec_encode_audio( c, audio_outbuf, audio_outbuf_size, NULL );
2022                                 pkt.pts = c->coded_frame? c->coded_frame->pts : AV_NOPTS_VALUE;
2023                                 pkt.flags |= PKT_FLAG_KEY;
2024 #endif
2025                         }
2026                         mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), "flushing audio size %d\n", pkt.size );
2027                         if ( pkt.size <= 0 )
2028                                 break;
2029
2030                         // Write the compressed frame in the media file
2031                         if ( pkt.pts != AV_NOPTS_VALUE )
2032                                 pkt.pts = av_rescale_q( pkt.pts, c->time_base, audio_st[0]->time_base );
2033 #if LIBAVCODEC_VERSION_MAJOR >= 55
2034                         if ( pkt.dts != AV_NOPTS_VALUE )
2035                                 pkt.dts = av_rescale_q( pkt.dts, c->time_base, audio_st[0]->time_base );
2036                         if ( pkt.duration > 0 )
2037                                 pkt.duration = av_rescale_q( pkt.duration, c->time_base, audio_st[0]->time_base );
2038 #endif
2039                         pkt.stream_index = audio_st[0]->index;
2040                         if ( av_interleaved_write_frame( oc, &pkt ) != 0 )
2041                         {
2042                                 mlt_log_fatal( MLT_CONSUMER_SERVICE( consumer ), "error writing flushed audio frame\n" );
2043                                 mlt_events_fire( properties, "consumer-fatal-error", NULL );
2044                                 goto on_fatal_error;
2045                         }
2046                 }
2047
2048                 // Flush video
2049                 if ( video_st && !( oc->oformat->flags & AVFMT_RAWPICTURE ) ) for (;;)
2050                 {
2051                         AVCodecContext *c = video_st->codec;
2052                         AVPacket pkt;
2053                         av_init_packet( &pkt );
2054                         pkt.data = video_outbuf;
2055                         pkt.size = video_outbuf_size;
2056
2057                         // Encode the image
2058 #if LIBAVCODEC_VERSION_MAJOR >= 55
2059                         int got_packet = 0;
2060                         int ret = avcodec_encode_video2( c, &pkt, NULL, &got_packet );
2061                         if ( ret < 0 )
2062                                 pkt.size = ret;
2063                         else if ( !got_packet )
2064                                 pkt.size = 0;
2065 #else
2066                         pkt.size = avcodec_encode_video( c, video_outbuf, video_outbuf_size, NULL );
2067                         pkt.pts = c->coded_frame? c->coded_frame->pts : AV_NOPTS_VALUE;
2068                         if( c->coded_frame && c->coded_frame->key_frame )
2069                                 pkt.flags |= PKT_FLAG_KEY;
2070 #endif
2071                         mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), "flushing video size %d\n", pkt.size );
2072                         if ( pkt.size <= 0 )
2073                                 break;
2074
2075                         if ( pkt.pts != AV_NOPTS_VALUE )
2076                                 pkt.pts = av_rescale_q( pkt.pts, c->time_base, video_st->time_base );
2077 #if LIBAVCODEC_VERSION_MAJOR >= 55
2078                         if ( pkt.dts != AV_NOPTS_VALUE )
2079                                 pkt.dts = av_rescale_q( pkt.dts, c->time_base, video_st->time_base );
2080 #endif
2081                         pkt.stream_index = video_st->index;
2082
2083                         // write the compressed frame in the media file
2084                         if ( av_interleaved_write_frame( oc, &pkt ) != 0 )
2085                         {
2086                                 mlt_log_fatal( MLT_CONSUMER_SERVICE(consumer), "error writing flushed video frame\n" );
2087                                 mlt_events_fire( properties, "consumer-fatal-error", NULL );
2088                                 goto on_fatal_error;
2089                         }
2090                         // Dual pass logging
2091                         if ( mlt_properties_get_data( properties, "_logfile", NULL ) && c->stats_out )
2092                                 fprintf( mlt_properties_get_data( properties, "_logfile", NULL ), "%s", c->stats_out );
2093                 }
2094         }
2095
2096 on_fatal_error:
2097
2098         // Write the trailer, if any
2099         if ( frames )
2100                 av_write_trailer( oc );
2101
2102         // close each codec
2103         if ( video_st )
2104                 close_video(oc, video_st);
2105         for ( i = 0; i < MAX_AUDIO_STREAMS && audio_st[i]; i++ )
2106                 close_audio( oc, audio_st[i] );
2107
2108         // Free the streams
2109         for ( i = 0; i < oc->nb_streams; i++ )
2110                 av_freep( &oc->streams[i] );
2111
2112         // Close the output file
2113         if ( !( fmt->flags & AVFMT_NOFILE ) &&
2114                 !mlt_properties_get_int( properties, "redirect" ) )
2115         {
2116 #if LIBAVFORMAT_VERSION_MAJOR >= 53
2117                 if ( oc->pb  ) avio_close( oc->pb );
2118 #else
2119                 if ( oc->pb  ) url_fclose( oc->pb );
2120 #endif
2121         }
2122
2123         // Clean up input and output frames
2124         if ( converted_avframe )
2125                 av_free( converted_avframe->data[0] );
2126         av_free( converted_avframe );
2127         av_free( video_avframe->data[0] );
2128         av_free( video_avframe );
2129         av_free( video_outbuf );
2130         av_free( audio_avframe );
2131         av_free( audio_buf_1 );
2132         av_free( audio_buf_2 );
2133
2134         // Free the stream
2135         av_free( oc );
2136
2137         // Just in case we terminated on pause
2138         mlt_consumer_stopped( consumer );
2139         mlt_properties_close( frame_meta_properties );
2140
2141         if ( mlt_properties_get_int( properties, "pass" ) > 1 )
2142         {
2143                 // Remove the dual pass log file
2144                 if ( mlt_properties_get( properties, "_logfilename" ) )
2145                         remove( mlt_properties_get( properties, "_logfilename" ) );
2146
2147                 // Remove the x264 dual pass logs
2148                 char *cwd = getcwd( NULL, 0 );
2149                 const char *file = "x264_2pass.log";
2150                 char *full = malloc( strlen( cwd ) + strlen( file ) + 2 );
2151                 sprintf( full, "%s/%s", cwd, file );
2152                 remove( full );
2153                 free( full );
2154                 file = "x264_2pass.log.temp";
2155                 full = malloc( strlen( cwd ) + strlen( file ) + 2 );
2156                 sprintf( full, "%s/%s", cwd, file );
2157                 remove( full );
2158                 free( full );
2159                 file = "x264_2pass.log.mbtree";
2160                 full = malloc( strlen( cwd ) + strlen( file ) + 2 );
2161                 sprintf( full, "%s/%s", cwd, file );
2162                 remove( full );
2163                 free( full );
2164                 free( cwd );
2165                 remove( "x264_2pass.log.temp" );
2166         }
2167
2168         while ( ( frame = mlt_deque_pop_back( queue ) ) )
2169                 mlt_frame_close( frame );
2170
2171         return NULL;
2172 }
2173
2174 /** Close the consumer.
2175 */
2176
2177 static void consumer_close( mlt_consumer consumer )
2178 {
2179         // Stop the consumer
2180         mlt_consumer_stop( consumer );
2181
2182         // Close the parent
2183         mlt_consumer_close( consumer );
2184
2185         // Free the memory
2186         free( consumer );
2187 }