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

   1 /*
   2  * producer_avformat.c -- avformat producer
   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_producer.h>
  25 #include <framework/mlt_frame.h>
  26 #include <framework/mlt_profile.h>
  27 #include <framework/mlt_log.h>
  28 #include <framework/mlt_deque.h>
  29 #include <framework/mlt_factory.h>
  30 #include <framework/mlt_cache.h>
  31
  32 // ffmpeg Header files
  33 #include <libavformat/avformat.h>
  34 #ifdef SWSCALE
  35 #  include <libswscale/swscale.h>
  36 #endif
  37
  38 #if LIBAVUTIL_VERSION_INT >= ((50<<16)+(38<<8)+0)
  39 #  include <libavutil/samplefmt.h>
  40 #else
  41 #  define AV_SAMPLE_FMT_S16 SAMPLE_FMT_S16
  42 #  define AV_SAMPLE_FMT_S32 SAMPLE_FMT_S32
  43 #  define AV_SAMPLE_FMT_FLT SAMPLE_FMT_FLT
  44 #  if (LIBAVCODEC_VERSION_INT >= ((51<<16)+(71<<8)+0))
  45 const char *avcodec_get_sample_fmt_name(int sample_fmt);
  46 #  endif
  47 #endif
  48
  49 #ifdef VDPAU
  50 #  include <libavcodec/vdpau.h>
  51 #endif
  52 #if (LIBAVUTIL_VERSION_INT > ((50<<16)+(7<<8)+0))
  53 #  include <libavutil/pixdesc.h>
  54 #endif
  55 #if (LIBAVUTIL_VERSION_INT >= ((51<<16)+(8<<8)+0))
  56 #  include <libavutil/dict.h>
  57 #endif
  58
  59 // System header files
  60 #include <stdlib.h>
  61 #include <string.h>
  62 #include <pthread.h>
  63 #include <limits.h>
  64
  65 #if LIBAVUTIL_VERSION_INT < (50<<16)
  66 #define PIX_FMT_RGB32 PIX_FMT_RGBA32
  67 #define PIX_FMT_YUYV422 PIX_FMT_YUV422
  68 #endif
  69
  70 #if LIBAVCODEC_VERSION_MAJOR >= 53
  71 #include <libavutil/opt.h>
  72 #define CODEC_TYPE_VIDEO      AVMEDIA_TYPE_VIDEO
  73 #define CODEC_TYPE_AUDIO      AVMEDIA_TYPE_AUDIO
  74 #define PKT_FLAG_KEY AV_PKT_FLAG_KEY
  75 #else
  76 #include <libavcodec/opt.h>
  77 #endif
  78
  79 #define POSITION_INITIAL (-2)
  80 #define POSITION_INVALID (-1)
  81
  82 #define MAX_AUDIO_STREAMS (32)
  83 #define MAX_VDPAU_SURFACES (10)
  84
  85 struct producer_avformat_s
  86 {
  87         mlt_producer parent;
  88         AVFormatContext *dummy_context;
  89         AVFormatContext *audio_format;
  90         AVFormatContext *video_format;
  91         AVCodecContext *audio_codec[ MAX_AUDIO_STREAMS ];
  92         AVCodecContext *video_codec;
  93         AVFrame *av_frame;
  94         AVPacket pkt;
  95         ReSampleContext *audio_resample[ MAX_AUDIO_STREAMS ];
  96         mlt_position audio_expected;
  97         mlt_position video_expected;
  98         int audio_index;
  99         int video_index;
 100         int64_t first_pts;
 101         int64_t last_position;
 102         int seekable;
 103         int64_t current_position;
 104         mlt_position nonseek_position;
 105         int top_field_first;
 106         uint8_t *audio_buffer[ MAX_AUDIO_STREAMS ];
 107         size_t audio_buffer_size[ MAX_AUDIO_STREAMS ];
 108         uint8_t *decode_buffer[ MAX_AUDIO_STREAMS ];
 109         int audio_used[ MAX_AUDIO_STREAMS ];
 110         int audio_streams;
 111         int audio_max_stream;
 112         int total_channels;
 113         int max_channel;
 114         int max_frequency;
 115         unsigned int invalid_pts_counter;
 116         unsigned int invalid_dts_counter;
 117         double resample_factor;
 118         mlt_cache image_cache;
 119         int colorspace;
 120         int full_luma;
 121         pthread_mutex_t video_mutex;
 122         pthread_mutex_t audio_mutex;
 123         mlt_deque apackets;
 124         mlt_deque vpackets;
 125         pthread_mutex_t packets_mutex;
 126         pthread_mutex_t open_mutex;
 127 #ifdef VDPAU
 128         struct
 129         {
 130                 // from FFmpeg
 131                 struct vdpau_render_state render_states[MAX_VDPAU_SURFACES];
 132
 133                 // internal
 134                 mlt_deque deque;
 135                 int b_age;
 136                 int ip_age[2];
 137                 int is_decoded;
 138                 uint8_t *buffer;
 139
 140                 VdpDevice device;
 141                 VdpDecoder decoder;
 142         } *vdpau;
 143 #endif
 144 };
 145 typedef struct producer_avformat_s *producer_avformat;
 146
 147 // Forward references.
 148 static int list_components( char* file );
 149 static int producer_open( producer_avformat self, mlt_profile profile, const char *URL, int take_lock );
 150 static int producer_get_frame( mlt_producer producer, mlt_frame_ptr frame, int index );
 151 static void producer_avformat_close( producer_avformat );
 152 static void producer_close( mlt_producer parent );
 153 static void producer_set_up_video( producer_avformat self, mlt_frame frame );
 154 static void producer_set_up_audio( producer_avformat self, mlt_frame frame );
 155 static void apply_properties( void *obj, mlt_properties properties, int flags );
 156 static int video_codec_init( producer_avformat self, int index, mlt_properties properties );
 157 static void get_audio_streams_info( producer_avformat self );
 158
 159 #ifdef VDPAU
 160 #include "vdpau.c"
 161 #endif
 162
 163 /** Constructor for libavformat.
 164 */
 165
 166 mlt_producer producer_avformat_init( mlt_profile profile, const char *service, char *file )
 167 {
 168         if ( list_components( file ) )
 169                 return NULL;
 170
 171         mlt_producer producer = NULL;
 172
 173         // Check that we have a non-NULL argument
 174         if ( file )
 175         {
 176                 // Construct the producer
 177                 producer_avformat self = calloc( 1, sizeof( struct producer_avformat_s ) );
 178                 producer = calloc( 1, sizeof( struct mlt_producer_s ) );
 179
 180                 // Initialise it
 181                 if ( mlt_producer_init( producer, self ) == 0 )
 182                 {
 183                         self->parent = producer;
 184
 185                         // Get the properties
 186                         mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
 187
 188                         // Set the resource property (required for all producers)
 189                         mlt_properties_set( properties, "resource", file );
 190
 191                         // Register transport implementation with the producer
 192                         producer->close = (mlt_destructor) producer_close;
 193
 194                         // Register our get_frame implementation
 195                         producer->get_frame = producer_get_frame;
 196
 197                         // init mutexes
 198                         pthread_mutex_init( &self->audio_mutex, NULL );
 199                         pthread_mutex_init( &self->video_mutex, NULL );
 200                         pthread_mutex_init( &self->packets_mutex, NULL );
 201                         pthread_mutex_init( &self->open_mutex, NULL );
 202
 203                         // init queues
 204                         self->apackets = mlt_deque_init();
 205                         self->vpackets = mlt_deque_init();
 206
 207                         if ( strcmp( service, "avformat-novalidate" ) )
 208                         {
 209                                 // Open the file
 210                                 if ( producer_open( self, profile, file, 1 ) != 0 )
 211                                 {
 212                                         // Clean up
 213                                         mlt_producer_close( producer );
 214                                         producer = NULL;
 215                                         producer_avformat_close( self );
 216                                 }
 217                                 else if ( self->seekable )
 218                                 {
 219                                         // Close the file to release resources for large playlists - reopen later as needed
 220 #if LIBAVFORMAT_VERSION_INT >= ((53<<16)+(17<<8)+0)
 221                                         if ( self->audio_format )
 222                                                 avformat_close_input( &self->audio_format );
 223                                         if ( self->video_format )
 224                                                 avformat_close_input( &self->video_format );
 225 #else
 226                                         if ( self->audio_format )
 227                                                 av_close_input_file( self->audio_format );
 228                                         if ( self->video_format )
 229                                                 av_close_input_file( self->video_format );
 230 #endif
 231                                         self->audio_format = NULL;
 232                                         self->video_format = NULL;
 233                                 }
 234                         }
 235                         if ( producer )
 236                         {
 237                                 // Default the user-selectable indices from the auto-detected indices
 238                                 mlt_properties_set_int( properties, "audio_index",  self->audio_index );
 239                                 mlt_properties_set_int( properties, "video_index",  self->video_index );
 240 #ifdef VDPAU
 241                                 mlt_service_cache_set_size( MLT_PRODUCER_SERVICE(producer), "producer_avformat", 5 );
 242 #endif
 243                                 mlt_service_cache_put( MLT_PRODUCER_SERVICE(producer), "producer_avformat", self, 0, (mlt_destructor) producer_avformat_close );
 244                         }
 245                 }
 246         }
 247         return producer;
 248 }
 249
 250 int list_components( char* file )
 251 {
 252         int skip = 0;
 253
 254         // Report information about available demuxers and codecs as YAML Tiny
 255         if ( file && strstr( file, "f-list" ) )
 256         {
 257                 fprintf( stderr, "---\nformats:\n" );
 258                 AVInputFormat *format = NULL;
 259                 while ( ( format = av_iformat_next( format ) ) )
 260                         fprintf( stderr, "  - %s\n", format->name );
 261                 fprintf( stderr, "...\n" );
 262                 skip = 1;
 263         }
 264         if ( file && strstr( file, "acodec-list" ) )
 265         {
 266                 fprintf( stderr, "---\naudio_codecs:\n" );
 267                 AVCodec *codec = NULL;
 268                 while ( ( codec = av_codec_next( codec ) ) )
 269                         if ( codec->decode && codec->type == CODEC_TYPE_AUDIO )
 270                                 fprintf( stderr, "  - %s\n", codec->name );
 271                 fprintf( stderr, "...\n" );
 272                 skip = 1;
 273         }
 274         if ( file && strstr( file, "vcodec-list" ) )
 275         {
 276                 fprintf( stderr, "---\nvideo_codecs:\n" );
 277                 AVCodec *codec = NULL;
 278                 while ( ( codec = av_codec_next( codec ) ) )
 279                         if ( codec->decode && codec->type == CODEC_TYPE_VIDEO )
 280                                 fprintf( stderr, "  - %s\n", codec->name );
 281                 fprintf( stderr, "...\n" );
 282                 skip = 1;
 283         }
 284
 285         return skip;
 286 }
 287
 288 /** Find the default streams.
 289 */
 290
 291 static mlt_properties find_default_streams( producer_avformat self )
 292 {
 293         int i;
 294         char key[200];
 295 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(8<<8)+0)
 296         AVDictionaryEntry *tag = NULL;
 297 #else
 298         AVMetadataTag *tag = NULL;
 299 #endif
 300         AVFormatContext *context = self->video_format;
 301         mlt_properties meta_media = MLT_PRODUCER_PROPERTIES( self->parent );
 302
 303         // Default to the first audio and video streams found
 304         self->audio_index = -1;
 305         self->video_index = -1;
 306
 307         mlt_properties_set_int( meta_media, "meta.media.nb_streams", context->nb_streams );
 308
 309         // Allow for multiple audio and video streams in the file and select first of each (if available)
 310         for( i = 0; i < context->nb_streams; i++ )
 311         {
 312                 // Get the codec context
 313                 AVStream *stream = context->streams[ i ];
 314                 if ( ! stream ) continue;
 315                 AVCodecContext *codec_context = stream->codec;
 316                 if ( ! codec_context ) continue;
 317                 AVCodec *codec = avcodec_find_decoder( codec_context->codec_id );
 318                 if ( ! codec ) continue;
 319
 320                 snprintf( key, sizeof(key), "meta.media.%d.stream.type", i );
 321
 322                 // Determine the type and obtain the first index of each type
 323                 switch( codec_context->codec_type )
 324                 {
 325                         case CODEC_TYPE_VIDEO:
 326                                 // Use first video stream
 327                                 if ( self->video_index < 0 )
 328                                         self->video_index = i;
 329                                 mlt_properties_set( meta_media, key, "video" );
 330                                 snprintf( key, sizeof(key), "meta.media.%d.stream.frame_rate", i );
 331 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(42<<8)+0)
 332                                 double ffmpeg_fps = av_q2d( context->streams[ i ]->avg_frame_rate );
 333                                 if ( isnan( ffmpeg_fps ) || ffmpeg_fps == 0 )
 334                                         ffmpeg_fps = av_q2d( context->streams[ i ]->r_frame_rate );
 335                                 mlt_properties_set_double( meta_media, key, ffmpeg_fps );
 336 #else
 337                                 mlt_properties_set_double( meta_media, key, av_q2d( context->streams[ i ]->r_frame_rate ) );
 338 #endif
 339
 340 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(21<<8)+0)
 341                                 snprintf( key, sizeof(key), "meta.media.%d.stream.sample_aspect_ratio", i );
 342                                 mlt_properties_set_double( meta_media, key, av_q2d( context->streams[ i ]->sample_aspect_ratio ) );
 343 #endif
 344                                 snprintf( key, sizeof(key), "meta.media.%d.codec.width", i );
 345                                 mlt_properties_set_int( meta_media, key, codec_context->width );
 346                                 snprintf( key, sizeof(key), "meta.media.%d.codec.height", i );
 347                                 mlt_properties_set_int( meta_media, key, codec_context->height );
 348                                 snprintf( key, sizeof(key), "meta.media.%d.codec.frame_rate", i );
 349                                 mlt_properties_set_double( meta_media, key, (double) codec_context->time_base.den /
 350                                                                                    ( codec_context->time_base.num == 0 ? 1 : codec_context->time_base.num ) );
 351                                 snprintf( key, sizeof(key), "meta.media.%d.codec.pix_fmt", i );
 352 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(3<<8)+0)
 353                                 mlt_properties_set( meta_media, key, av_get_pix_fmt_name( codec_context->pix_fmt ) );
 354 #else
 355                                 mlt_properties_set( meta_media, key, avcodec_get_pix_fmt_name( codec_context->pix_fmt ) );
 356 #endif
 357                                 snprintf( key, sizeof(key), "meta.media.%d.codec.sample_aspect_ratio", i );
 358                                 mlt_properties_set_double( meta_media, key, av_q2d( codec_context->sample_aspect_ratio ) );
 359 #if LIBAVCODEC_VERSION_INT > ((52<<16)+(28<<8)+0)
 360                                 snprintf( key, sizeof(key), "meta.media.%d.codec.colorspace", i );
 361                                 switch ( codec_context->colorspace )
 362                                 {
 363                                 case AVCOL_SPC_SMPTE240M:
 364                                         mlt_properties_set_int( meta_media, key, 240 );
 365                                         break;
 366                                 case AVCOL_SPC_BT470BG:
 367                                 case AVCOL_SPC_SMPTE170M:
 368                                         mlt_properties_set_int( meta_media, key, 601 );
 369                                         break;
 370                                 case AVCOL_SPC_BT709:
 371                                         mlt_properties_set_int( meta_media, key, 709 );
 372                                         break;
 373                                 default:
 374                                         // This is a heuristic Charles Poynton suggests in "Digital Video and HDTV"
 375                                         mlt_properties_set_int( meta_media, key, codec_context->width * codec_context->height > 750000 ? 709 : 601 );
 376                                         break;
 377                                 }
 378 #endif
 379                                 break;
 380                         case CODEC_TYPE_AUDIO:
 381                                 if ( !codec_context->channels )
 382                                         break;
 383                                 // Use first audio stream
 384                                 if ( self->audio_index < 0 )
 385                                         self->audio_index = i;
 386                                 mlt_properties_set( meta_media, key, "audio" );
 387 #if LIBAVUTIL_VERSION_INT >= ((50<<16)+(38<<8)+0)
 388                                 snprintf( key, sizeof(key), "meta.media.%d.codec.sample_fmt", i );
 389                                 mlt_properties_set( meta_media, key, av_get_sample_fmt_name( codec_context->sample_fmt ) );
 390 #elif (LIBAVCODEC_VERSION_INT >= ((51<<16)+(71<<8)+0))
 391                                 snprintf( key, sizeof(key), "meta.media.%d.codec.sample_fmt", i );
 392                                 mlt_properties_set( meta_media, key, avcodec_get_sample_fmt_name( codec_context->sample_fmt ) );
 393 #endif
 394                                 snprintf( key, sizeof(key), "meta.media.%d.codec.sample_rate", i );
 395                                 mlt_properties_set_int( meta_media, key, codec_context->sample_rate );
 396                                 snprintf( key, sizeof(key), "meta.media.%d.codec.channels", i );
 397                                 mlt_properties_set_int( meta_media, key, codec_context->channels );
 398                                 break;
 399                         default:
 400                                 break;
 401                 }
 402 //              snprintf( key, sizeof(key), "meta.media.%d.stream.time_base", i );
 403 //              mlt_properties_set_double( meta_media, key, av_q2d( context->streams[ i ]->time_base ) );
 404                 snprintf( key, sizeof(key), "meta.media.%d.codec.name", i );
 405                 mlt_properties_set( meta_media, key, codec->name );
 406 #if (LIBAVCODEC_VERSION_INT >= ((51<<16)+(55<<8)+0))
 407                 snprintf( key, sizeof(key), "meta.media.%d.codec.long_name", i );
 408                 mlt_properties_set( meta_media, key, codec->long_name );
 409 #endif
 410                 snprintf( key, sizeof(key), "meta.media.%d.codec.bit_rate", i );
 411                 mlt_properties_set_int( meta_media, key, codec_context->bit_rate );
 412 //              snprintf( key, sizeof(key), "meta.media.%d.codec.time_base", i );
 413 //              mlt_properties_set_double( meta_media, key, av_q2d( codec_context->time_base ) );
 414 //              snprintf( key, sizeof(key), "meta.media.%d.codec.profile", i );
 415 //              mlt_properties_set_int( meta_media, key, codec_context->profile );
 416 //              snprintf( key, sizeof(key), "meta.media.%d.codec.level", i );
 417 //              mlt_properties_set_int( meta_media, key, codec_context->level );
 418
 419                 // Read Metadata
 420 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(31<<8)+0)
 421 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(8<<8)+0)
 422                 while ( ( tag = av_dict_get( stream->metadata, "", tag, AV_DICT_IGNORE_SUFFIX ) ) )
 423 #else
 424                 while ( ( tag = av_metadata_get( stream->metadata, "", tag, AV_METADATA_IGNORE_SUFFIX ) ) )
 425 #endif
 426                 {
 427                         if ( tag->value && strcmp( tag->value, "" ) && strcmp( tag->value, "und" ) )
 428                         {
 429                                 snprintf( key, sizeof(key), "meta.attr.%d.stream.%s.markup", i, tag->key );
 430                                 mlt_properties_set( meta_media, key, tag->value );
 431                         }
 432                 }
 433 #endif
 434         }
 435 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(31<<8)+0)
 436 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(8<<8)+0)
 437         while ( ( tag = av_dict_get( context->metadata, "", tag, AV_DICT_IGNORE_SUFFIX ) ) )
 438 #else
 439         while ( ( tag = av_metadata_get( context->metadata, "", tag, AV_METADATA_IGNORE_SUFFIX ) ) )
 440 #endif
 441         {
 442                 if ( tag->value && strcmp( tag->value, "" ) && strcmp( tag->value, "und" ) )
 443                 {
 444                         snprintf( key, sizeof(key), "meta.attr.%s.markup", tag->key );
 445                         mlt_properties_set( meta_media, key, tag->value );
 446                 }
 447         }
 448 #else
 449         if ( context->title && strcmp( context->title, "" ) )
 450                 mlt_properties_set(properties, "meta.attr.title.markup", context->title );
 451         if ( context->author && strcmp( context->author, "" ) )
 452                 mlt_properties_set(properties, "meta.attr.author.markup", context->author );
 453         if ( context->copyright && strcmp( context->copyright, "" ) )
 454                 mlt_properties_set(properties, "meta.attr.copyright.markup", context->copyright );
 455         if ( context->comment )
 456                 mlt_properties_set(properties, "meta.attr.comment.markup", context->comment );
 457         if ( context->album )
 458                 mlt_properties_set(properties, "meta.attr.album.markup", context->album );
 459         if ( context->year )
 460                 mlt_properties_set_int(properties, "meta.attr.year.markup", context->year );
 461         if ( context->track )
 462                 mlt_properties_set_int(properties, "meta.attr.track.markup", context->track );
 463 #endif
 464
 465         return meta_media;
 466 }
 467
 468 static inline int dv_is_pal( AVPacket *pkt )
 469 {
 470         return pkt->data[3] & 0x80;
 471 }
 472
 473 static int dv_is_wide( AVPacket *pkt )
 474 {
 475         int i = 80 /* block size */ *3 /* VAUX starts at block 3 */ +3 /* skip block header */;
 476
 477         for ( ; i < pkt->size; i += 5 /* packet size */ )
 478         {
 479                 if ( pkt->data[ i ] == 0x61 )
 480                 {
 481                         uint8_t x = pkt->data[ i + 2 ] & 0x7;
 482                         return ( x == 2 ) || ( x == 7 );
 483                 }
 484         }
 485         return 0;
 486 }
 487
 488 static double get_aspect_ratio( mlt_properties properties, AVStream *stream, AVCodecContext *codec_context, AVPacket *pkt )
 489 {
 490         double aspect_ratio = 1.0;
 491
 492         if ( codec_context->codec_id == CODEC_ID_DVVIDEO )
 493         {
 494                 if ( pkt )
 495                 {
 496                         if ( dv_is_pal( pkt ) )
 497                         {
 498                                 if ( dv_is_wide( pkt ) )
 499                                 {
 500                                         mlt_properties_set_int( properties, "meta.media.sample_aspect_num", 64 );
 501                                         mlt_properties_set_int( properties, "meta.media.sample_aspect_den", 45 );
 502                                 }
 503                                 else
 504                                 {
 505                                         mlt_properties_set_int( properties, "meta.media.sample_aspect_num", 16 );
 506                                         mlt_properties_set_int( properties, "meta.media.sample_aspect_den", 15 );
 507                                 }
 508                         }
 509                         else
 510                         {
 511                                 if ( dv_is_wide( pkt ) )
 512                                 {
 513                                         mlt_properties_set_int( properties, "meta.media.sample_aspect_num", 32 );
 514                                         mlt_properties_set_int( properties, "meta.media.sample_aspect_den", 27 );
 515                                 }
 516                                 else
 517                                 {
 518                                         mlt_properties_set_int( properties, "meta.media.sample_aspect_num", 8 );
 519                                         mlt_properties_set_int( properties, "meta.media.sample_aspect_den", 9 );
 520                                 }
 521                         }
 522                 }
 523                 else
 524                 {
 525                         AVRational ar =
 526 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(21<<8)+0)
 527                                 stream->sample_aspect_ratio;
 528 #else
 529                                 codec_context->sample_aspect_ratio;
 530 #endif
 531                         // Override FFmpeg's notion of DV aspect ratios, which are
 532                         // based upon a width of 704. Since we do not have a normaliser
 533                         // that crops (nor is cropping 720 wide ITU-R 601 video always desirable)
 534                         // we just coerce the values to facilitate a passive behaviour through
 535                         // the rescale normaliser when using equivalent producers and consumers.
 536                         // = display_aspect / (width * height)
 537                         if ( ar.num == 10 && ar.den == 11 )
 538                         {
 539                                 // 4:3 NTSC
 540                                 mlt_properties_set_int( properties, "meta.media.sample_aspect_num", 8 );
 541                                 mlt_properties_set_int( properties, "meta.media.sample_aspect_den", 9 );
 542                         }
 543                         else if ( ar.num == 59 && ar.den == 54 )
 544                         {
 545                                 // 4:3 PAL
 546                                 mlt_properties_set_int( properties, "meta.media.sample_aspect_num", 16 );
 547                                 mlt_properties_set_int( properties, "meta.media.sample_aspect_den", 15 );
 548                         }
 549                         else if ( ar.num == 40 && ar.den == 33 )
 550                         {
 551                                 // 16:9 NTSC
 552                                 mlt_properties_set_int( properties, "meta.media.sample_aspect_num", 32 );
 553                                 mlt_properties_set_int( properties, "meta.media.sample_aspect_den", 27 );
 554                         }
 555                         else if ( ar.num == 118 && ar.den == 81 )
 556                         {
 557                                 // 16:9 PAL
 558                                 mlt_properties_set_int( properties, "meta.media.sample_aspect_num", 64 );
 559                                 mlt_properties_set_int( properties, "meta.media.sample_aspect_den", 45 );
 560                         }
 561                 }
 562         }
 563         else
 564         {
 565                 AVRational codec_sar = codec_context->sample_aspect_ratio;
 566                 AVRational stream_sar =
 567 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(21<<8)+0)
 568                         stream->sample_aspect_ratio;
 569 #else
 570                         { 0, 1 };
 571 #endif
 572                 if ( codec_sar.num > 0 )
 573                 {
 574                         mlt_properties_set_int( properties, "meta.media.sample_aspect_num", codec_sar.num );
 575                         mlt_properties_set_int( properties, "meta.media.sample_aspect_den", codec_sar.den );
 576                 }
 577                 else if ( stream_sar.num > 0 )
 578                 {
 579                         mlt_properties_set_int( properties, "meta.media.sample_aspect_num", stream_sar.num );
 580                         mlt_properties_set_int( properties, "meta.media.sample_aspect_den", stream_sar.den );
 581                 }
 582                 else
 583                 {
 584                         mlt_properties_set_int( properties, "meta.media.sample_aspect_num", 1 );
 585                         mlt_properties_set_int( properties, "meta.media.sample_aspect_den", 1 );
 586                 }
 587         }
 588         AVRational ar = { mlt_properties_get_double( properties, "meta.media.sample_aspect_num" ), mlt_properties_get_double( properties, "meta.media.sample_aspect_den" ) };
 589         aspect_ratio = av_q2d( ar );
 590         mlt_properties_set_double( properties, "aspect_ratio", aspect_ratio );
 591
 592         return aspect_ratio;
 593 }
 594
 595 #if LIBAVFORMAT_VERSION_INT > ((53<<16)+(6<<8)+0)
 596 static char* parse_url( mlt_profile profile, const char* URL, AVInputFormat **format, AVDictionary **params )
 597 #else
 598 static char* parse_url( mlt_profile profile, const char* URL, AVInputFormat **format, AVFormatParameters *params )
 599 #endif
 600 {
 601         if ( !URL ) return NULL;
 602
 603         char *result = NULL;
 604         char *protocol = strdup( URL );
 605         char *url = strchr( protocol, ':' );
 606
 607         // Only if there is not a protocol specification that avformat can handle
 608 #if LIBAVFORMAT_VERSION_MAJOR >= 53
 609         if ( url && avio_check( URL, 0 ) < 0 )
 610 #else
 611         if ( url && !url_exist( URL ) )
 612 #endif
 613         {
 614                 // Truncate protocol string
 615                 url[0] = 0;
 616                 mlt_log_debug( NULL, "%s: protocol=%s resource=%s\n", __FUNCTION__, protocol, url + 1 );
 617
 618                 // Lookup the format
 619                 *format = av_find_input_format( protocol );
 620
 621                 // Eat the format designator
 622                 result = ++url;
 623
 624                 if ( *format )
 625                 {
 626 #if LIBAVFORMAT_VERSION_INT > ((53<<16)+(6<<8)+0)
 627                         // support for legacy width and height parameters
 628                         char *width = NULL;
 629                         char *height = NULL;
 630 #else
 631                         // These are required by video4linux2 (defaults)
 632                         params->width = profile->width;
 633                         params->height = profile->height;
 634                         if ( !strstr( URL, "&frame_rate" ) )
 635                                 params->time_base = (AVRational){ profile->frame_rate_den, profile->frame_rate_num };
 636                         params->channels = 2;
 637                         params->sample_rate = 48000;
 638 #endif
 639
 640                         // Parse out params
 641                         url = strchr( url, '?' );
 642                         while ( url )
 643                         {
 644                                 url[0] = 0;
 645                                 char *name = strdup( ++url );
 646                                 char *value = strchr( name, '=' );
 647                                 if ( !value )
 648                                         // Also accept : as delimiter for backwards compatibility.
 649                                         value = strchr( name, ':' );
 650                                 if ( value )
 651                                 {
 652                                         value[0] = 0;
 653                                         value++;
 654                                         char *t = strchr( value, '&' );
 655                                         if ( t )
 656                                                 t[0] = 0;
 657 #if LIBAVFORMAT_VERSION_INT > ((53<<16)+(6<<8)+0)
 658                                         // translate old parameters to new av_dict names
 659                                         if ( !strcmp( name, "frame_rate" ) )
 660                                                 av_dict_set( params, "framerate", value, 0 );
 661                                         else if ( !strcmp( name, "pix_fmt" ) )
 662                                                 av_dict_set( params, "pixel_format", value, 0 );
 663                                         else if ( !strcmp( name, "width" ) )
 664                                                 width = strdup( value );
 665                                         else if ( !strcmp( name, "height" ) )
 666                                                 height = strdup( value );
 667                                         else
 668                                                 // generic demux/device option support
 669                                                 av_dict_set( params, name, value, 0 );
 670 #else
 671                                         if ( !strcmp( name, "frame_rate" ) )
 672                                                 params->time_base.den = atoi( value );
 673                                         else if ( !strcmp( name, "frame_rate_base" ) )
 674                                                 params->time_base.num = atoi( value );
 675                                         else if ( !strcmp( name, "sample_rate" ) )
 676                                                 params->sample_rate = atoi( value );
 677                                         else if ( !strcmp( name, "channel" ) )
 678                                                 params->channel = atoi( value );
 679                                         else if ( !strcmp( name, "channels" ) )
 680                                                 params->channels = atoi( value );
 681 #if (LIBAVUTIL_VERSION_INT > ((50<<16)+(7<<8)+0))
 682                                         else if ( !strcmp( name, "pix_fmt" ) )
 683                                                 params->pix_fmt = av_get_pix_fmt( value );
 684 #endif
 685                                         else if ( !strcmp( name, "width" ) )
 686                                                 params->width = atoi( value );
 687                                         else if ( !strcmp( name, "height" ) )
 688                                                 params->height = atoi( value );
 689                                         else if ( !strcmp( name, "standard" ) )
 690                                                 params->standard = strdup( value );
 691 #endif
 692                                 }
 693                                 free( name );
 694                                 url = strchr( url, '&' );
 695                         }
 696 #if LIBAVFORMAT_VERSION_INT > ((53<<16)+(6<<8)+0)
 697                         // continued support for legacy width and height parameters
 698                         if ( width && height )
 699                         {
 700                                 char *s = malloc( strlen( width ) + strlen( height ) + 2 );
 701                                 strcpy( s, width );
 702                                 strcat( s, "x");
 703                                 strcat( s, height );
 704                                 av_dict_set( params, "video_size", s, 0 );
 705                                 free( s );
 706                         }
 707                         if ( width ) free( width );
 708                         if ( height ) free ( height );
 709 #endif
 710                 }
 711                 result = strdup( result );
 712         }
 713         else
 714         {
 715                 result = strdup( URL );
 716         }
 717         free( protocol );
 718         return result;
 719 }
 720
 721 static int get_basic_info( producer_avformat self, mlt_profile profile, const char *filename )
 722 {
 723         int error = 0;
 724
 725         // Get the properties
 726         mlt_properties properties = MLT_PRODUCER_PROPERTIES( self->parent );
 727
 728         AVFormatContext *format = self->video_format;
 729
 730         // We will treat everything with the producer fps.
 731         // TODO: make this more flexible.
 732         double fps = mlt_profile_fps( profile );
 733
 734         // Get the duration
 735         if ( !mlt_properties_get_int( properties, "_length_computed" ) )
 736         {
 737                 // The _length_computed flag prevents overwriting explicity set length/out/eof properties
 738                 // when producer_open is called after initial call when restoring or reseting the producer.
 739                 if ( format->duration != AV_NOPTS_VALUE )
 740                 {
 741                         // This isn't going to be accurate for all formats
 742                         mlt_position frames = ( mlt_position )( ( ( double )format->duration / ( double )AV_TIME_BASE ) * fps );
 743                         mlt_properties_set_position( properties, "out", frames - 1 );
 744                         mlt_properties_set_position( properties, "length", frames );
 745                         mlt_properties_set_int( properties, "_length_computed", 1 );
 746                 }
 747                 else
 748                 {
 749                         // Set live sources to run forever
 750                         mlt_properties_set_position( properties, "length", INT_MAX );
 751                         mlt_properties_set_position( properties, "out", INT_MAX - 1 );
 752                         mlt_properties_set( properties, "eof", "loop" );
 753                         mlt_properties_set_int( properties, "_length_computed", 1 );
 754                 }
 755         }
 756
 757         // Check if we're seekable
 758         // avdevices are typically AVFMT_NOFILE and not seekable
 759         self->seekable = !format->iformat || !( format->iformat->flags & AVFMT_NOFILE );
 760         if ( format->pb )
 761         {
 762                 // protocols can indicate if they support seeking
 763 #if LIBAVFORMAT_VERSION_MAJOR >= 53
 764                 self->seekable = format->pb->seekable;
 765 #else
 766                 URLContext *uc = url_fileno( format->pb );
 767                 if ( uc )
 768                         self->seekable = !uc->is_streamed;
 769 #endif
 770         }
 771         if ( self->seekable )
 772         {
 773                 // Do a more rigourous test of seekable on a disposable context
 774                 self->seekable = av_seek_frame( format, -1, format->start_time, AVSEEK_FLAG_BACKWARD ) >= 0;
 775                 mlt_properties_set_int( properties, "seekable", self->seekable );
 776                 self->dummy_context = format;
 777 #if LIBAVFORMAT_VERSION_INT > ((53<<16)+(6<<8)+0)
 778                 self->video_format = NULL;
 779                 avformat_open_input( &self->video_format, filename, NULL, NULL );
 780                 avformat_find_stream_info( self->video_format, NULL );
 781 #else
 782                 av_open_input_file( &self->video_format, filename, NULL, 0, NULL );
 783                 av_find_stream_info( self->video_format );
 784 #endif
 785                 format = self->video_format;
 786         }
 787
 788         // Fetch the width, height and aspect ratio
 789         if ( self->video_index != -1 )
 790         {
 791                 AVCodecContext *codec_context = format->streams[ self->video_index ]->codec;
 792                 mlt_properties_set_int( properties, "width", codec_context->width );
 793                 mlt_properties_set_int( properties, "height", codec_context->height );
 794
 795                 if ( codec_context->codec_id == CODEC_ID_DVVIDEO )
 796                 {
 797                         // Fetch the first frame of DV so we can read it directly
 798                         AVPacket pkt;
 799                         int ret = 0;
 800                         while ( ret >= 0 )
 801                         {
 802                                 ret = av_read_frame( format, &pkt );
 803                                 if ( ret >= 0 && pkt.stream_index == self->video_index && pkt.size > 0 )
 804                                 {
 805                                         get_aspect_ratio( properties, format->streams[ self->video_index ], codec_context, &pkt );
 806                                         av_free_packet(&pkt);
 807                                         break;
 808                                 }
 809                                 if ( ret >= 0 )
 810                                         av_free_packet(&pkt);
 811                         }
 812                 }
 813                 else
 814                 {
 815                         get_aspect_ratio( properties, format->streams[ self->video_index ], codec_context, NULL );
 816                 }
 817
 818 #ifdef SWSCALE
 819                 // Verify that we can convert this to YUV 4:2:2
 820                 // TODO: we can now also return RGB and RGBA and quite possibly more in the future.
 821                 struct SwsContext *context = sws_getContext( codec_context->width, codec_context->height, codec_context->pix_fmt,
 822                         codec_context->width, codec_context->height, PIX_FMT_YUYV422, SWS_BILINEAR, NULL, NULL, NULL);
 823                 if ( context )
 824                         sws_freeContext( context );
 825                 else
 826                         error = 1;
 827 #endif
 828         }
 829         return error;
 830 }
 831
 832 /** Open the file.
 833 */
 834
 835 static int producer_open( producer_avformat self, mlt_profile profile, const char *URL, int take_lock )
 836 {
 837         // Return an error code (0 == no error)
 838         int error = 0;
 839         mlt_properties properties = MLT_PRODUCER_PROPERTIES( self->parent );
 840
 841         // Lock the service
 842         if ( take_lock )
 843         {
 844                 pthread_mutex_lock( &self->audio_mutex );
 845                 pthread_mutex_lock( &self->video_mutex );
 846         }
 847         mlt_events_block( properties, self->parent );
 848
 849         // Parse URL
 850         AVInputFormat *format = NULL;
 851 #if LIBAVFORMAT_VERSION_INT > ((53<<16)+(6<<8)+0)
 852         AVDictionary *params = NULL;
 853 #else
 854         AVFormatParameters params;
 855         memset( &params, 0, sizeof(params) );
 856 #endif
 857         char *filename = parse_url( profile, URL, &format, &params );
 858
 859         // Now attempt to open the file or device with filename
 860 #if LIBAVFORMAT_VERSION_INT > ((53<<16)+(6<<8)+0)
 861         error = avformat_open_input( &self->video_format, filename, format, &params ) < 0;
 862         if ( error )
 863                 // If the URL is a network stream URL, then we probably need to open with full URL
 864                 error = avformat_open_input( &self->video_format, URL, format, &params ) < 0;
 865 #else
 866         error = av_open_input_file( &self->video_format, filename, format, 0, &params ) < 0;
 867         if ( error )
 868                 // If the URL is a network stream URL, then we probably need to open with full URL
 869                 error = av_open_input_file( &self->video_format, URL, format, 0, &params ) < 0;
 870 #endif
 871
 872         // Set MLT properties onto video AVFormatContext
 873         if ( !error && self->video_format )
 874         {
 875                 apply_properties( self->video_format, properties, AV_OPT_FLAG_DECODING_PARAM );
 876 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(110<<8)+0)
 877                 if ( self->video_format->iformat && self->video_format->iformat->priv_class && self->video_format->priv_data )
 878                         apply_properties( self->video_format->priv_data, properties, AV_OPT_FLAG_DECODING_PARAM );
 879 #endif
 880         }
 881
 882 #if LIBAVFORMAT_VERSION_INT > ((53<<16)+(6<<8)+0)
 883         av_dict_free( &params );
 884 #else
 885         // Cleanup AVFormatParameters
 886         if ( params.standard )
 887                 free( (void*) params.standard );
 888 #endif
 889
 890         // If successful, then try to get additional info
 891         if ( !error && self->video_format )
 892         {
 893                 // Get the stream info
 894 #if LIBAVFORMAT_VERSION_INT > ((53<<16)+(6<<8)+0)
 895                 error = avformat_find_stream_info( self->video_format, NULL ) < 0;
 896 #else
 897                 error = av_find_stream_info( self->video_format ) < 0;
 898 #endif
 899
 900                 // Continue if no error
 901                 if ( !error && self->video_format )
 902                 {
 903                         // Find default audio and video streams
 904                         find_default_streams( self );
 905                         error = get_basic_info( self, profile, filename );
 906
 907                         // Initialize position info
 908                         self->first_pts = AV_NOPTS_VALUE;
 909                         self->last_position = POSITION_INITIAL;
 910
 911                         if ( !self->audio_format )
 912                         {
 913                                 // We're going to cheat here - for seekable A/V files, we will have separate contexts
 914                                 // to support independent seeking of audio from video.
 915                                 // TODO: Is this really necessary?
 916                                 if ( self->audio_index != -1 && self->video_index != -1 )
 917                                 {
 918                                         if ( self->seekable )
 919                                         {
 920                                                 // And open again for our audio context
 921 #if LIBAVFORMAT_VERSION_INT > ((53<<16)+(6<<8)+0)
 922                                                 avformat_open_input( &self->audio_format, filename, NULL, NULL );
 923                                                 apply_properties( self->audio_format, properties, AV_OPT_FLAG_DECODING_PARAM );
 924                                                 if ( self->audio_format->iformat && self->audio_format->iformat->priv_class && self->audio_format->priv_data )
 925                                                         apply_properties( self->audio_format->priv_data, properties, AV_OPT_FLAG_DECODING_PARAM );
 926                                                 avformat_find_stream_info( self->audio_format, NULL );
 927 #else
 928                                                 av_open_input_file( &self->audio_format, filename, NULL, 0, NULL );
 929                                                 apply_properties( self->audio_format, properties, AV_OPT_FLAG_DECODING_PARAM );
 930 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(110<<8)+0)
 931                         if ( self->audio_format->iformat && self->audio_format->iformat->priv_class && self->audio_format->priv_data )
 932                             apply_properties( self->audio_format->priv_data, properties, AV_OPT_FLAG_DECODING_PARAM );
 933 #endif
 934                                                 av_find_stream_info( self->audio_format );
 935 #endif
 936                                         }
 937                                         else
 938                                         {
 939                                                 self->audio_format = self->video_format;
 940                                         }
 941                                 }
 942                                 else if ( self->audio_index != -1 )
 943                                 {
 944                                         // We only have an audio context
 945                                         self->audio_format = self->video_format;
 946                                         self->video_format = NULL;
 947                                 }
 948                                 else if ( self->video_index == -1 )
 949                                 {
 950                                         // Something has gone wrong
 951                                         error = -1;
 952                                 }
 953                                 if ( self->audio_format && !self->audio_streams )
 954                                         get_audio_streams_info( self );
 955                         }
 956                 }
 957         }
 958         if ( filename )
 959                 free( filename );
 960
 961         if ( self->dummy_context )
 962         {
 963                 pthread_mutex_lock( &self->open_mutex );
 964 #if LIBAVFORMAT_VERSION_INT >= ((53<<16)+(17<<8)+0)
 965                 avformat_close_input( &self->dummy_context );
 966 #else
 967                 av_close_input_file( self->dummy_context );
 968 #endif
 969                 self->dummy_context = NULL;
 970                 pthread_mutex_unlock( &self->open_mutex );
 971         }
 972
 973         // Unlock the service
 974         if ( take_lock )
 975         {
 976                 pthread_mutex_unlock( &self->audio_mutex );
 977                 pthread_mutex_unlock( &self->video_mutex );
 978         }
 979         mlt_events_unblock( properties, self->parent );
 980
 981         return error;
 982 }
 983
 984 static void reopen_video( producer_avformat self, mlt_producer producer )
 985 {
 986         mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
 987         mlt_service_lock( MLT_PRODUCER_SERVICE( producer ) );
 988         pthread_mutex_lock( &self->audio_mutex );
 989         pthread_mutex_lock( &self->open_mutex );
 990
 991         if ( self->video_codec )
 992                 avcodec_close( self->video_codec );
 993         self->video_codec = NULL;
 994 #if LIBAVFORMAT_VERSION_INT >= ((53<<16)+(17<<8)+0)
 995         if ( self->dummy_context )
 996                 avformat_close_input( &self->dummy_context );
 997         if ( self->video_format )
 998                 avformat_close_input( &self->video_format );
 999 #else
1000         if ( self->dummy_context )
1001                 av_close_input_file( self->dummy_context );
1002         if ( self->video_format )
1003                 av_close_input_file( self->video_format );
1004 #endif
1005         self->dummy_context = NULL;
1006         self->video_format = NULL;
1007         pthread_mutex_unlock( &self->open_mutex );
1008
1009         int audio_index = self->audio_index;
1010         int video_index = self->video_index;
1011
1012         producer_open( self, mlt_service_profile( MLT_PRODUCER_SERVICE(producer) ),
1013                 mlt_properties_get( properties, "resource" ), 0 );
1014
1015         self->audio_index = audio_index;
1016         if ( self->video_format && video_index > -1 )
1017         {
1018                 self->video_index = video_index;
1019                 video_codec_init( self, video_index, properties );
1020         }
1021
1022         pthread_mutex_unlock( &self->audio_mutex );
1023         mlt_service_unlock( MLT_PRODUCER_SERVICE( producer ) );
1024 }
1025
1026 static int64_t best_pts( producer_avformat self, int64_t pts, int64_t dts )
1027 {
1028         self->invalid_pts_counter += pts == AV_NOPTS_VALUE;
1029         self->invalid_dts_counter += dts == AV_NOPTS_VALUE;
1030         if ( ( self->invalid_pts_counter <= self->invalid_dts_counter
1031                    || dts == AV_NOPTS_VALUE ) && pts != AV_NOPTS_VALUE )
1032                 return pts;
1033         else
1034                 return dts;
1035 }
1036
1037 static int seek_video( producer_avformat self, mlt_position position,
1038         int64_t req_position, int preseek )
1039 {
1040         mlt_producer producer = self->parent;
1041         int paused = 0;
1042
1043         if ( self->seekable && ( position != self->video_expected || self->last_position < 0 ) )
1044         {
1045                 mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
1046
1047                 // Fetch the video format context
1048                 AVFormatContext *context = self->video_format;
1049
1050                 // Get the video stream
1051                 AVStream *stream = context->streams[ self->video_index ];
1052
1053                 // Get codec context
1054                 AVCodecContext *codec_context = stream->codec;
1055
1056                 // We may want to use the source fps if available
1057                 double source_fps = mlt_properties_get_double( properties, "meta.media.frame_rate_num" ) /
1058                         mlt_properties_get_double( properties, "meta.media.frame_rate_den" );
1059
1060                 // find initial PTS
1061                 if ( self->last_position == POSITION_INITIAL )
1062                 {
1063                         int ret = 0;
1064                         int toscan = 500;
1065                         AVPacket pkt;
1066
1067                         while ( ret >= 0 && toscan-- > 0 )
1068                         {
1069                                 ret = av_read_frame( context, &pkt );
1070                                 if ( ret >= 0 && pkt.stream_index == self->video_index && ( pkt.flags & PKT_FLAG_KEY ) )
1071                                 {
1072                                         mlt_log_debug( MLT_PRODUCER_SERVICE(producer),
1073                                                 "first_pts %"PRId64" dts %"PRId64" pts_dts_delta %d\n",
1074                                                 pkt.pts, pkt.dts, (int)(pkt.pts - pkt.dts) );
1075                                         self->first_pts = best_pts( self, pkt.pts, pkt.dts );
1076                                         if ( self->first_pts != AV_NOPTS_VALUE )
1077                                                 toscan = 0;
1078                                 }
1079                                 av_free_packet( &pkt );
1080                         }
1081                         av_seek_frame( context, -1, 0, AVSEEK_FLAG_BACKWARD );
1082                 }
1083
1084                 if ( self->av_frame && position + 1 == self->video_expected )
1085                 {
1086                         // We're paused - use last image
1087                         paused = 1;
1088                 }
1089                 else if ( self->seekable && ( position < self->video_expected || position - self->video_expected >= 12 || self->last_position < 0 ) )
1090                 {
1091                         // Calculate the timestamp for the requested frame
1092                         int64_t timestamp = req_position / ( av_q2d( stream->time_base ) * source_fps );
1093                         if ( req_position <= 0 )
1094                                 timestamp = 0;
1095                         else if ( self->first_pts != AV_NOPTS_VALUE )
1096                                 timestamp += self->first_pts;
1097                         else if ( context->start_time != AV_NOPTS_VALUE )
1098                                 timestamp += context->start_time;
1099                         if ( preseek && av_q2d( stream->time_base ) != 0 )
1100                                 timestamp -= 2 / av_q2d( stream->time_base );
1101                         if ( timestamp < 0 )
1102                                 timestamp = 0;
1103                         mlt_log_debug( MLT_PRODUCER_SERVICE(producer), "seeking timestamp %"PRId64" position %d expected %d last_pos %"PRId64"\n",
1104                                 timestamp, position, self->video_expected, self->last_position );
1105
1106                         // Seek to the timestamp
1107                         // NOTE: reopen_video is disabled at this time because it is causing trouble with A/V sync.
1108                         if ( 1 || req_position > 0 || self->last_position <= 0 )
1109                         {
1110                                 codec_context->skip_loop_filter = AVDISCARD_NONREF;
1111                                 av_seek_frame( context, self->video_index, timestamp, AVSEEK_FLAG_BACKWARD );
1112
1113                                 // flush any pictures still in decode buffer
1114                                 avcodec_flush_buffers( codec_context );
1115                         }
1116                         else
1117                         {
1118                                 // Re-open video stream when rewinding to beginning from somewhere else.
1119                                 // This is rather ugly, and I prefer not to do it this way, but ffmpeg is
1120                                 // not reliably seeking to the first frame across formats.
1121                                 reopen_video( self, producer );
1122                         }
1123
1124                         // Remove the cached info relating to the previous position
1125                         self->current_position = POSITION_INVALID;
1126                         self->last_position = POSITION_INVALID;
1127                         av_freep( &self->av_frame );
1128                 }
1129         }
1130         return paused;
1131 }
1132
1133 /** Convert a frame position to a time code.
1134 */
1135
1136 static double producer_time_of_frame( mlt_producer producer, mlt_position position )
1137 {
1138         return ( double )position / mlt_producer_get_fps( producer );
1139 }
1140
1141 // Collect information about all audio streams
1142
1143 static void get_audio_streams_info( producer_avformat self )
1144 {
1145         // Fetch the audio format context
1146         AVFormatContext *context = self->audio_format;
1147         int i;
1148
1149         for ( i = 0;
1150                   i < context->nb_streams;
1151                   i++ )
1152         {
1153                 if ( context->streams[i]->codec->codec_type == CODEC_TYPE_AUDIO )
1154                 {
1155                         AVCodecContext *codec_context = context->streams[i]->codec;
1156                         AVCodec *codec = avcodec_find_decoder( codec_context->codec_id );
1157
1158                         // If we don't have a codec and we can't initialise it, we can't do much more...
1159                         pthread_mutex_lock( &self->open_mutex );
1160 #if LIBAVCODEC_VERSION_INT >= ((53<<16)+(8<<8)+0)
1161                         if ( codec && avcodec_open2( codec_context, codec, NULL ) >= 0 )
1162 #else
1163                         if ( codec && avcodec_open( codec_context, codec ) >= 0 )
1164 #endif
1165                         {
1166                                 self->audio_streams++;
1167                                 self->audio_max_stream = i;
1168                                 self->total_channels += codec_context->channels;
1169                                 if ( codec_context->channels > self->max_channel )
1170                                         self->max_channel = codec_context->channels;
1171                                 if ( codec_context->sample_rate > self->max_frequency )
1172                                         self->max_frequency = codec_context->sample_rate;
1173                                 avcodec_close( codec_context );
1174                         }
1175                         pthread_mutex_unlock( &self->open_mutex );
1176                 }
1177         }
1178         mlt_log_verbose( NULL, "[producer avformat] audio: total_streams %d max_stream %d total_channels %d max_channels %d\n",
1179                 self->audio_streams, self->audio_max_stream, self->total_channels, self->max_channel );
1180
1181         // Other audio-specific initializations
1182         self->resample_factor = 1.0;
1183 }
1184
1185 static void set_luma_transfer( struct SwsContext *context, int colorspace, int use_full_range )
1186 {
1187 #if defined(SWSCALE) && (LIBSWSCALE_VERSION_INT >= ((0<<16)+(7<<8)+2))
1188         int *coefficients;
1189         const int *new_coefficients;
1190         int full_range;
1191         int brightness, contrast, saturation;
1192
1193         if ( sws_getColorspaceDetails( context, &coefficients, &full_range, &coefficients, &full_range,
1194                         &brightness, &contrast, &saturation ) != -1 )
1195         {
1196                 // Don't change these from defaults unless explicitly told to.
1197                 if ( use_full_range >= 0 )
1198                         full_range = use_full_range;
1199                 switch ( colorspace )
1200                 {
1201                 case 170:
1202                 case 470:
1203                 case 601:
1204                 case 624:
1205                         new_coefficients = sws_getCoefficients( SWS_CS_ITU601 );
1206                         break;
1207                 case 240:
1208                         new_coefficients = sws_getCoefficients( SWS_CS_SMPTE240M );
1209                         break;
1210                 case 709:
1211                         new_coefficients = sws_getCoefficients( SWS_CS_ITU709 );
1212                         break;
1213                 default:
1214                         new_coefficients = coefficients;
1215                         break;
1216                 }
1217                 sws_setColorspaceDetails( context, new_coefficients, full_range, new_coefficients, full_range,
1218                         brightness, contrast, saturation );
1219         }
1220 #endif
1221 }
1222
1223 static mlt_image_format pick_pix_format( enum PixelFormat pix_fmt )
1224 {
1225         switch ( pix_fmt )
1226         {
1227         case PIX_FMT_ARGB:
1228         case PIX_FMT_RGBA:
1229         case PIX_FMT_ABGR:
1230         case PIX_FMT_BGRA:
1231                 return mlt_image_rgb24a;
1232         case PIX_FMT_YUV420P:
1233         case PIX_FMT_YUVJ420P:
1234         case PIX_FMT_YUVA420P:
1235                 return mlt_image_yuv420p;
1236         case PIX_FMT_RGB24:
1237         case PIX_FMT_BGR24:
1238         case PIX_FMT_GRAY8:
1239         case PIX_FMT_MONOWHITE:
1240         case PIX_FMT_MONOBLACK:
1241         case PIX_FMT_RGB8:
1242         case PIX_FMT_BGR8:
1243                 return mlt_image_rgb24;
1244         default:
1245                 return mlt_image_yuv422;
1246         }
1247 }
1248
1249 static mlt_audio_format pick_audio_format( int sample_fmt )
1250 {
1251         switch ( sample_fmt )
1252         {
1253         // interleaved
1254         case AV_SAMPLE_FMT_S16:
1255                 return mlt_audio_s16;
1256         case AV_SAMPLE_FMT_S32:
1257                 return mlt_audio_s32le;
1258         case AV_SAMPLE_FMT_FLT:
1259                 return mlt_audio_f32le;
1260         // planar - this producer converts planar to interleaved
1261 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(17<<8)+0)
1262         case AV_SAMPLE_FMT_S16P:
1263                 return mlt_audio_s16;
1264         case AV_SAMPLE_FMT_S32P:
1265                 return mlt_audio_s32le;
1266         case AV_SAMPLE_FMT_FLTP:
1267                 return mlt_audio_f32le;
1268 #endif
1269         default:
1270                 return mlt_audio_none;
1271         }
1272 }
1273
1274 static void convert_image( producer_avformat self, AVFrame *frame, uint8_t *buffer, int pix_fmt,
1275         mlt_image_format *format, int width, int height, uint8_t **alpha )
1276 {
1277 #ifdef SWSCALE
1278         int flags = SWS_BICUBIC | SWS_ACCURATE_RND;
1279
1280 #ifdef USE_MMX
1281         flags |= SWS_CPU_CAPS_MMX;
1282 #endif
1283 #ifdef USE_SSE
1284         flags |= SWS_CPU_CAPS_MMX2;
1285 #endif
1286
1287         // extract alpha from planar formats
1288         if ( ( pix_fmt == PIX_FMT_YUVA420P
1289 #if defined(FFUDIV) && LIBAVUTIL_VERSION_INT >= ((51<<16)+(35<<8)+101)
1290                         || pix_fmt == PIX_FMT_YUVA444P
1291 #endif
1292                         ) &&
1293                 *format != mlt_image_rgb24a && *format != mlt_image_opengl &&
1294                 frame->data[3] && frame->linesize[3] )
1295         {
1296                 int i;
1297                 uint8_t *src, *dst;
1298
1299                 dst = *alpha = mlt_pool_alloc( width * height );
1300                 src = frame->data[3];
1301
1302                 for ( i = 0; i < height; dst += width, src += frame->linesize[3], i++ )
1303                         memcpy( dst, src, FFMIN( width, frame->linesize[3] ) );
1304         }
1305
1306         if ( *format == mlt_image_yuv420p )
1307         {
1308                 struct SwsContext *context = sws_getContext( width, height, pix_fmt,
1309                         width, height, PIX_FMT_YUV420P, flags, NULL, NULL, NULL);
1310                 AVPicture output;
1311                 output.data[0] = buffer;
1312                 output.data[1] = buffer + width * height;
1313                 output.data[2] = buffer + ( 5 * width * height ) / 4;
1314                 output.linesize[0] = width;
1315                 output.linesize[1] = width >> 1;
1316                 output.linesize[2] = width >> 1;
1317                 set_luma_transfer( context, self->colorspace, -1 );
1318                 sws_scale( context, (const uint8_t* const*) frame->data, frame->linesize, 0, height,
1319                         output.data, output.linesize);
1320                 sws_freeContext( context );
1321         }
1322         else if ( *format == mlt_image_rgb24 )
1323         {
1324                 struct SwsContext *context = sws_getContext( width, height, pix_fmt,
1325                         width, height, PIX_FMT_RGB24, flags | SWS_FULL_CHR_H_INT, NULL, NULL, NULL);
1326                 AVPicture output;
1327                 avpicture_fill( &output, buffer, PIX_FMT_RGB24, width, height );
1328                 set_luma_transfer( context, self->colorspace, self->full_luma );
1329                 sws_scale( context, (const uint8_t* const*) frame->data, frame->linesize, 0, height,
1330                         output.data, output.linesize);
1331                 sws_freeContext( context );
1332         }
1333         else if ( *format == mlt_image_rgb24a || *format == mlt_image_opengl )
1334         {
1335                 struct SwsContext *context = sws_getContext( width, height, pix_fmt,
1336                         width, height, PIX_FMT_RGBA, flags | SWS_FULL_CHR_H_INT, NULL, NULL, NULL);
1337                 AVPicture output;
1338                 avpicture_fill( &output, buffer, PIX_FMT_RGBA, width, height );
1339                 set_luma_transfer( context, self->colorspace, self->full_luma );
1340                 sws_scale( context, (const uint8_t* const*) frame->data, frame->linesize, 0, height,
1341                         output.data, output.linesize);
1342                 sws_freeContext( context );
1343         }
1344         else
1345         {
1346                 struct SwsContext *context = sws_getContext( width, height, pix_fmt,
1347                         width, height, PIX_FMT_YUYV422, flags | SWS_FULL_CHR_H_INP, NULL, NULL, NULL);
1348                 AVPicture output;
1349                 avpicture_fill( &output, buffer, PIX_FMT_YUYV422, width, height );
1350                 set_luma_transfer( context, self->colorspace, -1 );
1351                 sws_scale( context, (const uint8_t* const*) frame->data, frame->linesize, 0, height,
1352                         output.data, output.linesize);
1353                 sws_freeContext( context );
1354         }
1355 #else
1356         if ( *format == mlt_image_yuv420p )
1357         {
1358                 AVPicture pict;
1359                 pict.data[0] = buffer;
1360                 pict.data[1] = buffer + width * height;
1361                 pict.data[2] = buffer + ( 5 * width * height ) / 4;
1362                 pict.linesize[0] = width;
1363                 pict.linesize[1] = width >> 1;
1364                 pict.linesize[2] = width >> 1;
1365                 img_convert( &pict, PIX_FMT_YUV420P, (AVPicture *)frame, pix_fmt, width, height );
1366         }
1367         else if ( *format == mlt_image_rgb24 )
1368         {
1369                 AVPicture output;
1370                 avpicture_fill( &output, buffer, PIX_FMT_RGB24, width, height );
1371                 img_convert( &output, PIX_FMT_RGB24, (AVPicture *)frame, pix_fmt, width, height );
1372         }
1373         else if ( *format == mlt_image_rgb24a || *format == mlt_image_opengl )
1374         {
1375                 AVPicture output;
1376                 avpicture_fill( &output, buffer, PIX_FMT_RGB32, width, height );
1377                 img_convert( &output, PIX_FMT_RGB32, (AVPicture *)frame, pix_fmt, width, height );
1378         }
1379         else
1380         {
1381                 AVPicture output;
1382                 avpicture_fill( &output, buffer, PIX_FMT_YUYV422, width, height );
1383                 img_convert( &output, PIX_FMT_YUYV422, (AVPicture *)frame, pix_fmt, width, height );
1384         }
1385 #endif
1386 }
1387
1388 /** Allocate the image buffer and set it on the frame.
1389 */
1390
1391 static int allocate_buffer( mlt_frame frame, AVCodecContext *codec_context, uint8_t **buffer, mlt_image_format *format, int *width, int *height )
1392 {
1393         int size = 0;
1394
1395         if ( codec_context->width == 0 || codec_context->height == 0 )
1396                 return size;
1397         *width = codec_context->width;
1398         *height = codec_context->height;
1399         size = mlt_image_format_size( *format, *width, *height, NULL );
1400         *buffer = mlt_pool_alloc( size );
1401         if ( *buffer )
1402                 mlt_frame_set_image( frame, *buffer, size, mlt_pool_release );
1403         else
1404                 size = 0;
1405
1406         return size;
1407 }
1408
1409 /** Get an image from a frame.
1410 */
1411
1412 static int producer_get_image( mlt_frame frame, uint8_t **buffer, mlt_image_format *format, int *width, int *height, int writable )
1413 {
1414         // Get the producer
1415         producer_avformat self = mlt_frame_pop_service( frame );
1416         mlt_producer producer = self->parent;
1417
1418         // Get the properties from the frame
1419         mlt_properties frame_properties = MLT_FRAME_PROPERTIES( frame );
1420
1421         // Obtain the frame number of this frame
1422         mlt_position position = mlt_frame_original_position( frame );
1423
1424         // Get the producer properties
1425         mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
1426
1427         pthread_mutex_lock( &self->video_mutex );
1428
1429         // Fetch the video format context
1430         AVFormatContext *context = self->video_format;
1431
1432         // Get the video stream
1433         AVStream *stream = context->streams[ self->video_index ];
1434
1435         // Get codec context
1436         AVCodecContext *codec_context = stream->codec;
1437
1438         uint8_t *alpha = NULL;
1439         int got_picture = 0;
1440         int image_size = 0;
1441
1442         // Get the image cache
1443         if ( ! self->image_cache )
1444         {
1445                 // if cache size supplied by environment variable
1446                 int cache_supplied = getenv( "MLT_AVFORMAT_CACHE" ) != NULL;
1447                 int cache_size = cache_supplied? atoi( getenv( "MLT_AVFORMAT_CACHE" ) ) : 0;
1448
1449                 // cache size supplied via property
1450                 if ( mlt_properties_get( properties, "cache" ) )
1451                 {
1452                         cache_supplied = 1;
1453                         cache_size = mlt_properties_get_int( properties, "cache" );
1454                 }
1455                 if ( mlt_properties_get_int( properties, "noimagecache" ) )
1456                         cache_size = 0;
1457                 // create cache if not disabled
1458                 if ( !cache_supplied || cache_size > 0 )
1459                         self->image_cache = mlt_cache_init();
1460                 // set cache size if supplied
1461                 if ( self->image_cache && cache_supplied )
1462                         mlt_cache_set_size( self->image_cache, cache_size );
1463         }
1464         if ( self->image_cache )
1465         {
1466                 mlt_frame original = mlt_cache_get_frame( self->image_cache, position );
1467                 if ( original )
1468                 {
1469                         mlt_properties orig_props = MLT_FRAME_PROPERTIES( original );
1470                         int size = 0;
1471
1472                         *buffer = mlt_properties_get_data( orig_props, "alpha", &size );
1473                         if (*buffer)
1474                                 mlt_frame_set_alpha( frame, *buffer, size, NULL );
1475                         *buffer = mlt_properties_get_data( orig_props, "image", &size );
1476                         mlt_frame_set_image( frame, *buffer, size, NULL );
1477                         mlt_properties_set_data( frame_properties, "avformat.image_cache", original, 0, (mlt_destructor) mlt_frame_close, NULL );
1478                         *format = mlt_properties_get_int( orig_props, "format" );
1479
1480                         // Set the resolution
1481                         *width = codec_context->width;
1482                         *height = codec_context->height;
1483
1484                         // Workaround 1088 encodings missing cropping info.
1485                         if ( *height == 1088 && mlt_profile_dar( mlt_service_profile( MLT_PRODUCER_SERVICE( producer ) ) ) == 16.0/9.0 )
1486                                 *height = 1080;
1487
1488                         got_picture = 1;
1489                         goto exit_get_image;
1490                 }
1491         }
1492         // Cache miss
1493
1494         // We may want to use the source fps if available
1495         double source_fps = mlt_properties_get_double( properties, "meta.media.frame_rate_num" ) /
1496                 mlt_properties_get_double( properties, "meta.media.frame_rate_den" );
1497
1498         // This is the physical frame position in the source
1499         int64_t req_position = ( int64_t )( position / mlt_producer_get_fps( producer ) * source_fps + 0.5 );
1500
1501         // Determines if we have to decode all frames in a sequence
1502         // Temporary hack to improve intra frame only
1503         int must_decode = !( codec_context->codec && codec_context->codec->name ) || (
1504                                   strcmp( codec_context->codec->name, "dnxhd" ) &&
1505                                   strcmp( codec_context->codec->name, "dvvideo" ) &&
1506                                   strcmp( codec_context->codec->name, "huffyuv" ) &&
1507                                   strcmp( codec_context->codec->name, "mjpeg" ) &&
1508                                   strcmp( codec_context->codec->name, "rawvideo" ) );
1509
1510         double delay = mlt_properties_get_double( properties, "video_delay" );
1511
1512         // Seek if necessary
1513         const char *interp = mlt_properties_get( frame_properties, "rescale.interp" );
1514         int preseek = must_decode
1515 #if defined(FFUDIV) && LIBAVFORMAT_VERSION_INT >= ((53<<16)+(24<<8)+2)
1516                 && ( interp && strcmp( interp, "nearest" ) )
1517 #endif
1518                 && codec_context->has_b_frames;
1519         int paused = seek_video( self, position, req_position, preseek );
1520
1521         // Seek might have reopened the file
1522         context = self->video_format;
1523         stream = context->streams[ self->video_index ];
1524         codec_context = stream->codec;
1525         if ( *format == mlt_image_none ||
1526                         codec_context->pix_fmt == PIX_FMT_ARGB ||
1527                         codec_context->pix_fmt == PIX_FMT_RGBA ||
1528                         codec_context->pix_fmt == PIX_FMT_ABGR ||
1529                         codec_context->pix_fmt == PIX_FMT_BGRA )
1530                 *format = pick_pix_format( codec_context->pix_fmt );
1531
1532         // Duplicate the last image if necessary
1533         if ( self->av_frame && self->av_frame->linesize[0]
1534                  && ( paused || self->current_position >= req_position ) )
1535         {
1536                 // Duplicate it
1537                 if ( ( image_size = allocate_buffer( frame, codec_context, buffer, format, width, height ) ) )
1538                 {
1539                         // Workaround 1088 encodings missing cropping info.
1540                         if ( *height == 1088 && mlt_profile_dar( mlt_service_profile( MLT_PRODUCER_SERVICE( producer ) ) ) == 16.0/9.0 )
1541                                 *height = 1080;
1542 #ifdef VDPAU
1543                         if ( self->vdpau && self->vdpau->buffer )
1544                         {
1545                                 AVPicture picture;
1546                                 picture.data[0] = self->vdpau->buffer;
1547                                 picture.data[2] = self->vdpau->buffer + codec_context->width * codec_context->height;
1548                                 picture.data[1] = self->vdpau->buffer + codec_context->width * codec_context->height * 5 / 4;
1549                                 picture.linesize[0] = codec_context->width;
1550                                 picture.linesize[1] = codec_context->width / 2;
1551                                 picture.linesize[2] = codec_context->width / 2;
1552                                 convert_image( self, (AVFrame*) &picture, *buffer,
1553                                         PIX_FMT_YUV420P, format, *width, *height, &alpha );
1554                         }
1555                         else
1556 #endif
1557                         convert_image( self, self->av_frame, *buffer, codec_context->pix_fmt,
1558                                 format, *width, *height, &alpha );
1559                         got_picture = 1;
1560                 }
1561         }
1562         else
1563         {
1564                 int ret = 0;
1565                 int64_t int_position = 0;
1566                 int decode_errors = 0;
1567
1568                 // Construct an AVFrame for YUV422 conversion
1569                 if ( !self->av_frame )
1570                         self->av_frame = avcodec_alloc_frame( );
1571
1572                 while( ret >= 0 && !got_picture )
1573                 {
1574                         // Read a packet
1575                         if ( self->pkt.stream_index == self->video_index )
1576                                 av_free_packet( &self->pkt );
1577                         av_init_packet( &self->pkt );
1578                         pthread_mutex_lock( &self->packets_mutex );
1579                         if ( mlt_deque_count( self->vpackets ) )
1580                         {
1581                                 AVPacket *tmp = (AVPacket*) mlt_deque_pop_front( self->vpackets );
1582                                 self->pkt = *tmp;
1583                                 free( tmp );
1584                         }
1585                         else
1586                         {
1587                                 ret = av_read_frame( context, &self->pkt );
1588                                 if ( ret >= 0 && !self->seekable && self->pkt.stream_index == self->audio_index )
1589                                 {
1590                                         if ( !av_dup_packet( &self->pkt ) )
1591                                         {
1592                                                 AVPacket *tmp = malloc( sizeof(AVPacket) );
1593                                                 *tmp = self->pkt;
1594                                                 mlt_deque_push_back( self->apackets, tmp );
1595                                         }
1596                                 }
1597                         }
1598                         pthread_mutex_unlock( &self->packets_mutex );
1599
1600                         // We only deal with video from the selected video_index
1601                         if ( ret >= 0 && self->pkt.stream_index == self->video_index && self->pkt.size > 0 )
1602                         {
1603                                 int64_t pts = best_pts( self, self->pkt.pts, self->pkt.dts );
1604                                 if ( pts != AV_NOPTS_VALUE )
1605                                 {
1606                                         if ( !self->seekable && self->first_pts == AV_NOPTS_VALUE )
1607                                                 self->first_pts = pts;
1608                                         if ( self->first_pts != AV_NOPTS_VALUE )
1609                                                 pts -= self->first_pts;
1610                                         else if ( context->start_time != AV_NOPTS_VALUE )
1611                                                 pts -= context->start_time;
1612                                         int_position = ( int64_t )( ( av_q2d( stream->time_base ) * pts + delay ) * source_fps + 0.5 );
1613                                         if ( int_position == self->last_position )
1614                                                 int_position = self->last_position + 1;
1615                                 }
1616                                 mlt_log_debug( MLT_PRODUCER_SERVICE(producer),
1617                                         "V pkt.pts %"PRId64" pkt.dts %"PRId64" req_pos %"PRId64" cur_pos %"PRId64" pkt_pos %"PRId64"\n",
1618                                         self->pkt.pts, self->pkt.dts, req_position, self->current_position, int_position );
1619
1620                                 // Make a dumb assumption on streams that contain wild timestamps
1621                                 if ( abs( req_position - int_position ) > 999 )
1622                                 {
1623                                         int_position = req_position;
1624                                         mlt_log_warning( MLT_PRODUCER_SERVICE(producer), " WILD TIMESTAMP!\n" );
1625                                 }
1626                                 self->last_position = int_position;
1627
1628                                 // Decode the image
1629                                 if ( must_decode || int_position >= req_position )
1630                                 {
1631 #ifdef VDPAU
1632                                         if ( self->vdpau )
1633                                         {
1634                                                 if ( self->vdpau->decoder == VDP_INVALID_HANDLE )
1635                                                 {
1636                                                         vdpau_decoder_init( self );
1637                                                 }
1638                                                 self->vdpau->is_decoded = 0;
1639                                         }
1640 #endif
1641                                         codec_context->reordered_opaque = int_position;
1642                                         if ( int_position >= req_position )
1643                                                 codec_context->skip_loop_filter = AVDISCARD_NONE;
1644 #if (LIBAVCODEC_VERSION_INT >= ((52<<16)+(26<<8)+0))
1645                                         ret = avcodec_decode_video2( codec_context, self->av_frame, &got_picture, &self->pkt );
1646 #else
1647                                         ret = avcodec_decode_video( codec_context, self->av_frame, &got_picture, self->pkt.data, self->pkt.size );
1648 #endif
1649                                         // Note: decode may fail at the beginning of MPEGfile (B-frames referencing before first I-frame), so allow a few errors.
1650                                         if ( ret < 0 )
1651                                         {
1652                                                 if ( ++decode_errors <= 10 )
1653                                                         ret = 0;
1654                                         }
1655                                         else
1656                                         {
1657                                                 decode_errors = 0;
1658                                         }
1659                                 }
1660
1661                                 if ( got_picture )
1662                                 {
1663                                         // Get position of reordered frame
1664                                         int_position = self->av_frame->reordered_opaque;
1665 #if (LIBAVCODEC_VERSION_INT >= ((52<<16)+(106<<8)+0))
1666                                         pts = best_pts( self, self->av_frame->pkt_pts, self->av_frame->pkt_dts );
1667                                         if ( pts != AV_NOPTS_VALUE )
1668                                         {
1669                                                 if ( self->first_pts != AV_NOPTS_VALUE )
1670                                                         pts -= self->first_pts;
1671                                                 else if ( context->start_time != AV_NOPTS_VALUE )
1672                                                         pts -= context->start_time;
1673                                                 int_position = ( int64_t )( ( av_q2d( stream->time_base ) * pts + delay ) * source_fps + 0.5 );
1674                                         }
1675 #endif
1676
1677                                         if ( int_position < req_position )
1678                                                 got_picture = 0;
1679                                         else if ( int_position >= req_position )
1680                                                 codec_context->skip_loop_filter = AVDISCARD_NONE;
1681                                 }
1682                                 mlt_log_debug( MLT_PRODUCER_SERVICE(producer), " got_pic %d key %d\n", got_picture, self->pkt.flags & PKT_FLAG_KEY );
1683                         }
1684
1685                         // Now handle the picture if we have one
1686                         if ( got_picture )
1687                         {
1688                                 if ( ( image_size = allocate_buffer( frame, codec_context, buffer, format, width, height ) ) )
1689                                 {
1690                                         // Workaround 1088 encodings missing cropping info.
1691                                         if ( *height == 1088 && mlt_profile_dar( mlt_service_profile( MLT_PRODUCER_SERVICE( producer ) ) ) == 16.0/9.0 )
1692                                                 *height = 1080;
1693 #ifdef VDPAU
1694                                         if ( self->vdpau )
1695                                         {
1696                                                 if ( self->vdpau->is_decoded )
1697                                                 {
1698                                                         struct vdpau_render_state *render = (struct vdpau_render_state*) self->av_frame->data[0];
1699                                                         void *planes[3];
1700                                                         uint32_t pitches[3];
1701                                                         VdpYCbCrFormat dest_format = VDP_YCBCR_FORMAT_YV12;
1702
1703                                                         if ( !self->vdpau->buffer )
1704                                                                 self->vdpau->buffer = mlt_pool_alloc( codec_context->width * codec_context->height * 3 / 2 );
1705                                                         self->av_frame->data[0] = planes[0] = self->vdpau->buffer;
1706                                                         self->av_frame->data[2] = planes[1] = self->vdpau->buffer + codec_context->width * codec_context->height;
1707                                                         self->av_frame->data[1] = planes[2] = self->vdpau->buffer + codec_context->width * codec_context->height * 5 / 4;
1708                                                         self->av_frame->linesize[0] = pitches[0] = codec_context->width;
1709                                                         self->av_frame->linesize[1] = pitches[1] = codec_context->width / 2;
1710                                                         self->av_frame->linesize[2] = pitches[2] = codec_context->width / 2;
1711
1712                                                         VdpStatus status = vdp_surface_get_bits( render->surface, dest_format, planes, pitches );
1713                                                         if ( status == VDP_STATUS_OK )
1714                                                         {
1715                                                                 convert_image( self, self->av_frame, *buffer, PIX_FMT_YUV420P,
1716                                                                         format, *width, *height, &alpha );
1717                                                         }
1718                                                         else
1719                                                         {
1720                                                                 mlt_log_error( MLT_PRODUCER_SERVICE(producer), "VDPAU Error: %s\n", vdp_get_error_string( status ) );
1721                                                                 image_size = self->vdpau->is_decoded = 0;
1722                                                         }
1723                                                 }
1724                                                 else
1725                                                 {
1726                                                         mlt_log_error( MLT_PRODUCER_SERVICE(producer), "VDPAU error in VdpDecoderRender\n" );
1727                                                         image_size = got_picture = 0;
1728                                                 }
1729                                         }
1730                                         else
1731 #endif
1732                                         convert_image( self, self->av_frame, *buffer, codec_context->pix_fmt,
1733                                                 format, *width, *height, &alpha );
1734                                         self->top_field_first |= self->av_frame->top_field_first;
1735                                         self->current_position = int_position;
1736                                 }
1737                                 else
1738                                 {
1739                                         got_picture = 0;
1740                                 }
1741                         }
1742
1743                         // Free packet data if not video and not live audio packet
1744                         if ( self->pkt.stream_index != self->video_index &&
1745                                  !( !self->seekable && self->pkt.stream_index == self->audio_index ) )
1746                                 av_free_packet( &self->pkt );
1747                 }
1748         }
1749
1750         // set alpha
1751         if ( alpha )
1752                 mlt_frame_set_alpha( frame, alpha, (*width) * (*height), mlt_pool_release );
1753
1754         if ( image_size > 0 && self->image_cache )
1755         {
1756                 mlt_properties_set_int( frame_properties, "format", *format );
1757                 mlt_cache_put_frame( self->image_cache, frame );
1758         }
1759
1760         // Try to duplicate last image if there was a decoding failure
1761         // TODO: with multithread decoding a partial frame decoding resulting
1762         // in failure also resets av_frame making test below fail.
1763         if ( !image_size && self->av_frame && self->av_frame->linesize[0] )
1764         {
1765                 // Duplicate it
1766                 if ( ( image_size = allocate_buffer( frame, codec_context, buffer, format, width, height ) ) )
1767                 {
1768                         // Workaround 1088 encodings missing cropping info.
1769                         if ( *height == 1088 && mlt_profile_dar( mlt_service_profile( MLT_PRODUCER_SERVICE( producer ) ) ) == 16.0/9.0 )
1770                                 *height = 1080;
1771 #ifdef VDPAU
1772                         if ( self->vdpau && self->vdpau->buffer )
1773                         {
1774                                 AVPicture picture;
1775                                 picture.data[0] = self->vdpau->buffer;
1776                                 picture.data[2] = self->vdpau->buffer + codec_context->width * codec_context->height;
1777                                 picture.data[1] = self->vdpau->buffer + codec_context->width * codec_context->height * 5 / 4;
1778                                 picture.linesize[0] = codec_context->width;
1779                                 picture.linesize[1] = codec_context->width / 2;
1780                                 picture.linesize[2] = codec_context->width / 2;
1781                                 convert_image( self, (AVFrame*) &picture, *buffer,
1782                                         PIX_FMT_YUV420P, format, *width, *height, &alpha );
1783                         }
1784                         else
1785 #endif
1786                         convert_image( self, self->av_frame, *buffer, codec_context->pix_fmt,
1787                                 format, *width, *height, &alpha );
1788                         got_picture = 1;
1789                 }
1790         }
1791
1792         // Regardless of speed, we expect to get the next frame (cos we ain't too bright)
1793         self->video_expected = position + 1;
1794
1795 exit_get_image:
1796
1797         pthread_mutex_unlock( &self->video_mutex );
1798
1799         // Set the progressive flag
1800         if ( mlt_properties_get( properties, "force_progressive" ) )
1801                 mlt_properties_set_int( frame_properties, "progressive", !!mlt_properties_get_int( properties, "force_progressive" ) );
1802         else if ( self->av_frame )
1803                 mlt_properties_set_int( frame_properties, "progressive", !self->av_frame->interlaced_frame );
1804
1805         // Set the field order property for this frame
1806         if ( mlt_properties_get( properties, "force_tff" ) )
1807                 mlt_properties_set_int( frame_properties, "top_field_first", !!mlt_properties_get_int( properties, "force_tff" ) );
1808         else
1809                 mlt_properties_set_int( frame_properties, "top_field_first", self->top_field_first );
1810
1811         // Set immutable properties of the selected track's (or overridden) source attributes.
1812         mlt_service_lock( MLT_PRODUCER_SERVICE( producer ) );
1813         mlt_properties_set_int( properties, "meta.media.top_field_first", self->top_field_first );
1814         mlt_properties_set_int( properties, "meta.media.progressive", mlt_properties_get_int( frame_properties, "progressive" ) );
1815         mlt_service_unlock( MLT_PRODUCER_SERVICE( producer ) );
1816
1817         // If we already have RGB, then the full range processing either happened already
1818         // or does not apply (RGB source).
1819         if ( *format == mlt_image_rgb24 || *format == mlt_image_rgb24a || *format == mlt_image_opengl )
1820                 mlt_properties_set( frame_properties, "force_full_luma", NULL );
1821
1822         return !got_picture;
1823 }
1824
1825 /** Process properties as AVOptions and apply to AV context obj
1826 */
1827
1828 static void apply_properties( void *obj, mlt_properties properties, int flags )
1829 {
1830         int i;
1831         int count = mlt_properties_count( properties );
1832         for ( i = 0; i < count; i++ )
1833         {
1834                 const char *opt_name = mlt_properties_get_name( properties, i );
1835 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(10<<8)+0)
1836                 const AVOption *opt = av_opt_find( obj, opt_name, NULL, flags, flags );
1837 #else
1838                 const AVOption *opt = av_find_opt( obj, opt_name, NULL, flags, flags );
1839 #endif
1840                 if ( opt_name && mlt_properties_get( properties, opt_name ) )
1841                 {
1842                         if ( opt )
1843 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(12<<8)+0)
1844                                 av_opt_set( obj, opt_name, mlt_properties_get( properties, opt_name), 0 );
1845 #elif LIBAVCODEC_VERSION_INT >= ((52<<16)+(7<<8)+0)
1846                                 av_set_string3( obj, opt_name, mlt_properties_get( properties, opt_name), 0, NULL );
1847 #elif LIBAVCODEC_VERSION_INT >= ((51<<16)+(59<<8)+0)
1848                                 av_set_string2( obj, opt_name, mlt_properties_get( properties, opt_name), 0 );
1849 #else
1850                                 av_set_string( obj, opt_name, mlt_properties_get( properties, opt_name) );
1851 #endif
1852                 }
1853         }
1854 }
1855
1856 /** Initialize the video codec context.
1857  */
1858
1859 static int video_codec_init( producer_avformat self, int index, mlt_properties properties )
1860 {
1861         // Initialise the codec if necessary
1862         if ( !self->video_codec )
1863         {
1864                 // Get the video stream
1865                 AVStream *stream = self->video_format->streams[ index ];
1866
1867                 // Get codec context
1868                 AVCodecContext *codec_context = stream->codec;
1869
1870                 // Find the codec
1871                 AVCodec *codec = avcodec_find_decoder( codec_context->codec_id );
1872 #ifdef VDPAU
1873                 if ( codec_context->codec_id == CODEC_ID_H264 )
1874                 {
1875                         if ( ( codec = avcodec_find_decoder_by_name( "h264_vdpau" ) ) )
1876                         {
1877                                 if ( vdpau_init( self ) )
1878                                 {
1879                                         self->video_codec = codec_context;
1880                                         if ( !vdpau_decoder_init( self ) )
1881                                                 vdpau_fini( self );
1882                                 }
1883                         }
1884                         if ( !self->vdpau )
1885                                 codec = avcodec_find_decoder( codec_context->codec_id );
1886                 }
1887 #endif
1888
1889                 // Initialise multi-threading
1890                 int thread_count = mlt_properties_get_int( properties, "threads" );
1891                 if ( thread_count == 0 && getenv( "MLT_AVFORMAT_THREADS" ) )
1892                         thread_count = atoi( getenv( "MLT_AVFORMAT_THREADS" ) );
1893                 if ( thread_count > 1 )
1894                         codec_context->thread_count = thread_count;
1895
1896                 // If we don't have a codec and we can't initialise it, we can't do much more...
1897                 pthread_mutex_lock( &self->open_mutex );
1898 #if LIBAVCODEC_VERSION_INT >= ((53<<16)+(8<<8)+0)
1899                 if ( codec && avcodec_open2( codec_context, codec, NULL ) >= 0 )
1900 #else
1901                 if ( codec && avcodec_open( codec_context, codec ) >= 0 )
1902 #endif
1903                 {
1904                         // Now store the codec with its destructor
1905                         self->video_codec = codec_context;
1906                 }
1907                 else
1908                 {
1909                         // Remember that we can't use this later
1910                         self->video_index = -1;
1911                         pthread_mutex_unlock( &self->open_mutex );
1912                         return 0;
1913                 }
1914                 pthread_mutex_unlock( &self->open_mutex );
1915
1916                 // Process properties as AVOptions
1917                 apply_properties( codec_context, properties, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM );
1918 #if LIBAVCODEC_VERSION_INT >= ((52<<16)+(122<<8)+0)
1919                 if ( codec->priv_class && codec_context->priv_data )
1920                         apply_properties( codec_context->priv_data, properties, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM );
1921 #endif
1922
1923                 // Reset some image properties
1924                 if ( self->video_codec )
1925                 {
1926                         mlt_properties_set_int( properties, "width", self->video_codec->width );
1927                         mlt_properties_set_int( properties, "height", self->video_codec->height );
1928                 }
1929                 // For DV, we'll just use the saved aspect ratio
1930                 if ( codec_context->codec_id != CODEC_ID_DVVIDEO )
1931                         get_aspect_ratio( properties, stream, self->video_codec, NULL );
1932
1933                 // Determine the fps first from the codec
1934                 double source_fps = (double) self->video_codec->time_base.den /
1935                                                                    ( self->video_codec->time_base.num == 0 ? 1 : self->video_codec->time_base.num );
1936
1937                 if ( mlt_properties_get( properties, "force_fps" ) )
1938                 {
1939                         source_fps = mlt_properties_get_double( properties, "force_fps" );
1940                         stream->time_base = av_d2q( source_fps, 1024 );
1941                         mlt_properties_set_int( properties, "meta.media.frame_rate_num", stream->time_base.num );
1942                         mlt_properties_set_int( properties, "meta.media.frame_rate_den", stream->time_base.den );
1943                 }
1944                 else
1945                 {
1946                         // If the muxer reports a frame rate different than the codec
1947 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(42<<8)+0)
1948                         double muxer_fps = av_q2d( stream->avg_frame_rate );
1949                         if ( isnan( muxer_fps ) || muxer_fps == 0 )
1950                                 muxer_fps = av_q2d( stream->r_frame_rate );
1951 #else
1952                         double muxer_fps = av_q2d( stream->r_frame_rate );
1953 #endif
1954                         // Choose the lesser - the wrong tends to be off by some multiple of 10
1955                         source_fps = FFMIN( source_fps, muxer_fps );
1956                         if ( source_fps >= 1.0 && ( source_fps < muxer_fps || isnan( muxer_fps ) ) )
1957                         {
1958                                 mlt_properties_set_int( properties, "meta.media.frame_rate_num", self->video_codec->time_base.den );
1959                                 mlt_properties_set_int( properties, "meta.media.frame_rate_den", self->video_codec->time_base.num == 0 ? 1 : self->video_codec->time_base.num );
1960                         }
1961                         else if ( muxer_fps > 0 )
1962                         {
1963                                 AVRational frame_rate = stream->r_frame_rate;
1964                                 // With my samples when r_frame_rate != 1000 but avg_frame_rate is valid,
1965                                 // avg_frame_rate gives some approximate value that does not well match the media.
1966                                 // Also, on my sample where r_frame_rate = 1000, using avg_frame_rate directly
1967                                 // results in some very choppy output, but some value slightly different works
1968                                 // great.
1969 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(42<<8)+0)
1970                                 if ( av_q2d( stream->r_frame_rate ) >= 1000 && av_q2d( stream->avg_frame_rate ) > 0 )
1971                                         frame_rate = av_d2q( av_q2d( stream->avg_frame_rate ), 1024 );
1972 #endif
1973                                 mlt_properties_set_int( properties, "meta.media.frame_rate_num", frame_rate.num );
1974                                 mlt_properties_set_int( properties, "meta.media.frame_rate_den", frame_rate.den );
1975                         }
1976                         else
1977                         {
1978                                 source_fps = mlt_producer_get_fps( self->parent );
1979                                 AVRational frame_rate = av_d2q( source_fps, 255 );
1980                                 mlt_properties_set_int( properties, "meta.media.frame_rate_num", frame_rate.num );
1981                                 mlt_properties_set_int( properties, "meta.media.frame_rate_den", frame_rate.den );
1982                         }
1983                 }
1984
1985                 // Set the YUV colorspace from override or detect
1986                 self->colorspace = mlt_properties_get_int( properties, "force_colorspace" );
1987 #if LIBAVCODEC_VERSION_INT > ((52<<16)+(28<<8)+0)
1988                 if ( ! self->colorspace )
1989                 {
1990                         switch ( self->video_codec->colorspace )
1991                         {
1992                         case AVCOL_SPC_SMPTE240M:
1993                                 self->colorspace = 240;
1994                                 break;
1995                         case AVCOL_SPC_BT470BG:
1996                         case AVCOL_SPC_SMPTE170M:
1997                                 self->colorspace = 601;
1998                                 break;
1999                         case AVCOL_SPC_BT709:
2000                                 self->colorspace = 709;
2001                                 break;
2002                         default:
2003                                 // This is a heuristic Charles Poynton suggests in "Digital Video and HDTV"
2004                                 self->colorspace = self->video_codec->width * self->video_codec->height > 750000 ? 709 : 601;
2005                                 break;
2006                         }
2007                 }
2008 #endif
2009                 // Let apps get chosen colorspace
2010                 mlt_properties_set_int( properties, "meta.media.colorspace", self->colorspace );
2011
2012                 self->full_luma = -1;
2013 #if LIBAVCODEC_VERSION_INT >= ((52<<16)+(72<<8)+2)
2014                 mlt_log_debug( MLT_PRODUCER_SERVICE(self->parent), "color_range %d\n", codec_context->color_range );
2015                 if ( codec_context->color_range == AVCOL_RANGE_JPEG )
2016                         self->full_luma = 1;
2017 #endif
2018                 if ( mlt_properties_get( properties, "set.force_full_luma" ) )
2019                         self->full_luma = mlt_properties_get_int( properties, "set.force_full_luma" );
2020         }
2021         return self->video_codec && self->video_index > -1;
2022 }
2023
2024 /** Set up video handling.
2025 */
2026
2027 static void producer_set_up_video( producer_avformat self, mlt_frame frame )
2028 {
2029         // Get the producer
2030         mlt_producer producer = self->parent;
2031
2032         // Get the properties
2033         mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
2034
2035         // Fetch the video format context
2036         AVFormatContext *context = self->video_format;
2037
2038         // Get the video_index
2039         int index = mlt_properties_get_int( properties, "video_index" );
2040
2041         // Reopen the file if necessary
2042         if ( !context && index > -1 )
2043         {
2044                 producer_open( self, mlt_service_profile( MLT_PRODUCER_SERVICE(producer) ),
2045                         mlt_properties_get( properties, "resource" ), 1 );
2046                 context = self->video_format;
2047         }
2048
2049         // Exception handling for video_index
2050         if ( context && index >= (int) context->nb_streams )
2051         {
2052                 // Get the last video stream
2053                 for ( index = context->nb_streams - 1;
2054                           index >= 0 && context->streams[ index ]->codec->codec_type != CODEC_TYPE_VIDEO;
2055                           index-- );
2056                 mlt_properties_set_int( properties, "video_index", index );
2057         }
2058         if ( context && index > -1 && context->streams[ index ]->codec->codec_type != CODEC_TYPE_VIDEO )
2059         {
2060                 // Invalidate the video stream
2061                 index = -1;
2062                 mlt_properties_set_int( properties, "video_index", index );
2063         }
2064
2065         // Update the video properties if the index changed
2066         if ( index != self->video_index )
2067         {
2068                 // Reset the video properties if the index changed
2069                 self->video_index = index;
2070                 pthread_mutex_lock( &self->open_mutex );
2071                 if ( self->video_codec )
2072                         avcodec_close( self->video_codec );
2073                 self->video_codec = NULL;
2074                 pthread_mutex_unlock( &self->open_mutex );
2075         }
2076
2077         // Get the frame properties
2078         mlt_properties frame_properties = MLT_FRAME_PROPERTIES( frame );
2079
2080         // Get the codec
2081         if ( context && index > -1 && video_codec_init( self, index, properties ) )
2082         {
2083                 // Set the frame properties
2084                 double force_aspect_ratio = mlt_properties_get_double( properties, "force_aspect_ratio" );
2085                 double aspect_ratio = ( force_aspect_ratio > 0.0 ) ?
2086                         force_aspect_ratio : mlt_properties_get_double( properties, "aspect_ratio" );
2087
2088                 // Set the width and height
2089                 mlt_properties_set_int( frame_properties, "width", self->video_codec->width );
2090                 mlt_properties_set_int( frame_properties, "height", self->video_codec->height );
2091                 mlt_properties_set_int( properties, "meta.media.width", self->video_codec->width );
2092                 mlt_properties_set_int( properties, "meta.media.height", self->video_codec->height );
2093                 mlt_properties_set_double( frame_properties, "aspect_ratio", aspect_ratio );
2094                 mlt_properties_set_int( frame_properties, "colorspace", self->colorspace );
2095
2096                 // Workaround 1088 encodings missing cropping info.
2097                 if ( self->video_codec->height == 1088 && mlt_profile_dar( mlt_service_profile( MLT_PRODUCER_SERVICE( producer ) ) ) == 16.0/9.0 )
2098                 {
2099                         mlt_properties_set_int( properties, "meta.media.height", 1080 );
2100                 }
2101
2102                 // Add our image operation
2103                 mlt_frame_push_service( frame, self );
2104                 mlt_frame_push_get_image( frame, producer_get_image );
2105         }
2106         else
2107         {
2108                 // If something failed, use test card image
2109                 mlt_properties_set_int( frame_properties, "test_image", 1 );
2110         }
2111 }
2112
2113 static int seek_audio( producer_avformat self, mlt_position position, double timecode )
2114 {
2115         int paused = 0;
2116
2117         // Seek if necessary
2118         if ( self->seekable && position != self->audio_expected )
2119         {
2120                 if ( position + 1 == self->audio_expected )
2121                 {
2122                         // We're paused - silence required
2123                         paused = 1;
2124                 }
2125                 else if ( position < self->audio_expected || position - self->audio_expected >= 12 )
2126                 {
2127                         AVFormatContext *context = self->audio_format;
2128                         int64_t timestamp = ( int64_t )( timecode * AV_TIME_BASE + 0.5 );
2129                         if ( context->start_time != AV_NOPTS_VALUE )
2130                                 timestamp += context->start_time;
2131                         if ( timestamp < 0 )
2132                                 timestamp = 0;
2133
2134                         // Set to the real timecode
2135                         if ( av_seek_frame( context, -1, timestamp, AVSEEK_FLAG_BACKWARD ) != 0 )
2136                                 paused = 1;
2137
2138                         // Clear the usage in the audio buffer
2139                         int i = MAX_AUDIO_STREAMS + 1;
2140                         while ( --i )
2141                                 self->audio_used[i - 1] = 0;
2142                 }
2143         }
2144         return paused;
2145 }
2146
2147 static int sample_bytes( AVCodecContext *context )
2148 {
2149 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(8<<8)+0)
2150         return av_get_bytes_per_sample( context->sample_fmt );
2151 #elif LIBAVCODEC_VERSION_MAJOR >= 53
2152         return av_get_bits_per_sample_fmt( context->sample_fmt ) / 8;
2153 #else
2154         return av_get_bits_per_sample_format( context->sample_fmt ) / 8;
2155 #endif
2156 }
2157
2158 static void planar_to_interleaved( uint8_t *dest, uint8_t *src, int samples, int channels, int bytes_per_sample )
2159 {
2160         int s, c;
2161         for ( s = 0; s < samples; s++ )
2162         {
2163                 for ( c = 0; c < channels; c++ )
2164                 {
2165                         memcpy( dest, src + ( c * samples + s ) * bytes_per_sample, bytes_per_sample );
2166                         dest += bytes_per_sample;
2167                 }
2168         }
2169 }
2170
2171 static int decode_audio( producer_avformat self, int *ignore, AVPacket pkt, int channels, int samples, double timecode, double fps )
2172 {
2173         // Fetch the audio_format
2174         AVFormatContext *context = self->audio_format;
2175
2176         // Get the current stream index
2177         int index = pkt.stream_index;
2178
2179         // Get codec context
2180         AVCodecContext *codec_context = self->audio_codec[ index ];
2181
2182         // Obtain the resample context if it exists (not always needed)
2183         ReSampleContext *resample = self->audio_resample[ index ];
2184
2185         // Obtain the audio buffers
2186         uint8_t *audio_buffer = self->audio_buffer[ index ];
2187         uint8_t *decode_buffer = self->decode_buffer[ index ];
2188
2189         int audio_used = self->audio_used[ index ];
2190         uint8_t *ptr = pkt.data;
2191         int len = pkt.size;
2192         int ret = 0;
2193
2194         while ( ptr && ret >= 0 && len > 0 )
2195         {
2196                 int sizeof_sample = resample? sizeof( int16_t ) : sample_bytes( codec_context );
2197                 int data_size = self->audio_buffer_size[ index ];
2198
2199                 // Decode the audio
2200 #if (LIBAVCODEC_VERSION_INT >= ((52<<16)+(26<<8)+0))
2201                 ret = avcodec_decode_audio3( codec_context, (int16_t*) decode_buffer, &data_size, &pkt );
2202 #elif (LIBAVCODEC_VERSION_INT >= ((51<<16)+(29<<8)+0))
2203                 ret = avcodec_decode_audio2( codec_context, decode_buffer, &data_size, ptr, len );
2204 #else
2205                 ret = avcodec_decode_audio( codec_context, decode_buffer, &data_size, ptr, len );
2206 #endif
2207                 if ( ret < 0 )
2208                 {
2209                         mlt_log_warning( MLT_PRODUCER_SERVICE(self->parent), "audio decoding error %d\n", ret );
2210                         break;
2211                 }
2212
2213                 pkt.size = len -= ret;
2214                 pkt.data = ptr += ret;
2215
2216                 // If decoded successfully
2217                 if ( data_size > 0 )
2218                 {
2219                         // Figure out how many samples will be needed after resampling
2220                         int convert_samples = data_size / codec_context->channels / sample_bytes( codec_context );
2221                         int samples_needed = self->resample_factor * convert_samples;
2222
2223                         // Resize audio buffer to prevent overflow
2224                         if ( ( audio_used + samples_needed ) * channels * sizeof_sample > self->audio_buffer_size[ index ] )
2225                         {
2226                                 self->audio_buffer_size[ index ] = ( audio_used + samples_needed * 2 ) * channels * sizeof_sample;
2227                                 audio_buffer = self->audio_buffer[ index ] = mlt_pool_realloc( audio_buffer, self->audio_buffer_size[ index ] );
2228                         }
2229                         if ( resample )
2230                         {
2231                                 // Copy to audio buffer while resampling
2232                                 uint8_t *source = decode_buffer;
2233                                 uint8_t *dest = &audio_buffer[ audio_used * channels * sizeof_sample ];
2234                                 audio_used += audio_resample( resample, (short*) dest, (short*) source, convert_samples );
2235                         }
2236                         else
2237                         {
2238                                 uint8_t *source = decode_buffer;
2239                                 uint8_t *dest = &audio_buffer[ audio_used * codec_context->channels * sizeof_sample ];
2240                                 switch ( codec_context->sample_fmt )
2241                                 {
2242 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(17<<8)+0)
2243                                 case AV_SAMPLE_FMT_S16P:
2244                                 case AV_SAMPLE_FMT_S32P:
2245                                 case AV_SAMPLE_FMT_FLTP:
2246                                         planar_to_interleaved( dest, source, convert_samples, codec_context->channels, sizeof_sample );
2247                                         break;
2248 #endif
2249                                 default:
2250                                         // Straight copy to audio buffer
2251                                         memcpy( dest, decode_buffer, data_size );
2252                                 }
2253                                 audio_used += convert_samples;
2254                         }
2255
2256                         // Handle ignore
2257                         while ( *ignore && audio_used )
2258                         {
2259                                 *ignore -= 1;
2260                                 audio_used -= audio_used > samples ? samples : audio_used;
2261                                 memmove( audio_buffer, &audio_buffer[ samples * (resample? channels : codec_context->channels) * sizeof_sample ],
2262                                                  audio_used * sizeof_sample );
2263                         }
2264                 }
2265         }
2266
2267         // If we're behind, ignore this packet
2268         // Skip this on non-seekable, audio-only inputs.
2269         if ( pkt.pts >= 0 && ( self->seekable || self->video_format ) && *ignore == 0 && audio_used > samples / 2 )
2270         {
2271                 int64_t pts = pkt.pts;
2272                 if ( self->first_pts != 0 )
2273                         pts -= self->first_pts;
2274                 else if ( context->start_time != AV_NOPTS_VALUE )
2275                         pts -= context->start_time;
2276                 double timebase = av_q2d( context->streams[ index ]->time_base );
2277                 int64_t int_position = ( int64_t )( timebase * pts * fps + 0.5 );
2278                 int64_t req_position = ( int64_t )( timecode * fps + 0.5 );
2279
2280                 mlt_log_debug( MLT_PRODUCER_SERVICE(self->parent),
2281                         "A pkt.pts %"PRId64" pkt.dts %"PRId64" req_pos %"PRId64" cur_pos %"PRId64" pkt_pos %"PRId64"\n",
2282                         pkt.pts, pkt.dts, req_position, self->current_position, int_position );
2283
2284                 if ( int_position > 0 )
2285                 {
2286                         if ( int_position < req_position )
2287                                 // We are behind, so skip some
2288                                 *ignore = req_position - int_position;
2289                         else if ( self->audio_index != INT_MAX && int_position > req_position + 2 )
2290                                 // We are ahead, so seek backwards some more
2291                                 seek_audio( self, req_position, timecode - 1.0 );
2292                 }
2293         }
2294
2295         self->audio_used[ index ] = audio_used;
2296
2297         return ret;
2298 }
2299
2300 /** Get the audio from a frame.
2301 */
2302 static int producer_get_audio( mlt_frame frame, void **buffer, mlt_audio_format *format, int *frequency, int *channels, int *samples )
2303 {
2304         // Get the producer
2305         producer_avformat self = mlt_frame_pop_audio( frame );
2306
2307         pthread_mutex_lock( &self->audio_mutex );
2308
2309         // Obtain the frame number of this frame
2310         mlt_position position = mlt_frame_original_position( frame );
2311
2312         // Calculate the real time code
2313         double real_timecode = producer_time_of_frame( self->parent, position );
2314
2315         // Get the producer fps
2316         double fps = mlt_producer_get_fps( self->parent );
2317
2318         // Number of frames to ignore (for ffwd)
2319         int ignore[ MAX_AUDIO_STREAMS ] = { 0 };
2320
2321         // Flag for paused (silence)
2322         int paused = seek_audio( self, position, real_timecode );
2323
2324         // Initialize ignore for all streams from the seek return value
2325         int i = MAX_AUDIO_STREAMS;
2326         while ( i-- )
2327                 ignore[i] = ignore[0];
2328
2329         // Fetch the audio_format
2330         AVFormatContext *context = self->audio_format;
2331
2332         int sizeof_sample = sizeof( int16_t );
2333
2334         // Determine the tracks to use
2335         int index = self->audio_index;
2336         int index_max = self->audio_index + 1;
2337         if ( self->audio_index == INT_MAX )
2338         {
2339                 index = 0;
2340                 index_max = FFMIN( MAX_AUDIO_STREAMS, context->nb_streams );
2341                 *channels = self->total_channels;
2342                 *samples = *samples * FFMAX( self->max_frequency, *frequency ) / *frequency;
2343                 *frequency = FFMAX( self->max_frequency, *frequency );
2344         }
2345
2346         // Initialize the resamplers and buffers
2347         for ( ; index < index_max && index < MAX_AUDIO_STREAMS; index++ )
2348         {
2349                 // Get codec context
2350                 AVCodecContext *codec_context = self->audio_codec[ index ];
2351
2352                 if ( codec_context && !self->audio_buffer[ index ] )
2353                 {
2354 #if LIBAVCODEC_VERSION_INT < ((54<<16)+(26<<8)+0)
2355                         // Check for resample and create if necessary
2356                         if ( codec_context->channels <= 2 )
2357                         {
2358                                 // Determine by how much resampling will increase number of samples
2359                                 double resample_factor = self->audio_index == INT_MAX ? 1 : (double) *channels / codec_context->channels;
2360                                 resample_factor *= (double) *frequency / codec_context->sample_rate;
2361                                 if ( resample_factor > self->resample_factor )
2362                                         self->resample_factor = resample_factor;
2363
2364                                 // Create the resampler
2365 #if (LIBAVCODEC_VERSION_INT >= ((52<<16)+(15<<8)+0))
2366                                 self->audio_resample[ index ] = av_audio_resample_init(
2367                                         self->audio_index == INT_MAX ? codec_context->channels : *channels,
2368                                         codec_context->channels, *frequency, codec_context->sample_rate,
2369                                         AV_SAMPLE_FMT_S16, codec_context->sample_fmt, 16, 10, 0, 0.8 );
2370 #else
2371                                 self->audio_resample[ index ] = audio_resample_init(
2372                                         self->audio_index == INT_MAX ? codec_context->channels : *channels,
2373                                         codec_context->channels, *frequency, codec_context->sample_rate );
2374 #endif
2375                         }
2376                         else
2377 #endif
2378                         {
2379                                 codec_context->request_channels = self->audio_index == INT_MAX ? codec_context->channels : *channels;
2380                                 sizeof_sample = sample_bytes( codec_context );
2381                         }
2382
2383                         // Check for audio buffer and create if necessary
2384                         self->audio_buffer_size[ index ] = AVCODEC_MAX_AUDIO_FRAME_SIZE * sizeof_sample;
2385                         self->audio_buffer[ index ] = mlt_pool_alloc( self->audio_buffer_size[ index ] );
2386
2387                         // Check for decoder buffer and create if necessary
2388                         self->decode_buffer[ index ] = av_malloc( self->audio_buffer_size[ index ] );
2389                 }
2390         }
2391
2392         // Get the audio if required
2393         if ( !paused )
2394         {
2395                 int ret = 0;
2396                 int got_audio = 0;
2397                 AVPacket pkt;
2398
2399                 av_init_packet( &pkt );
2400
2401                 // If not resampling, give consumer more than requested.
2402                 // It requested number samples based on requested frame rate.
2403                 // Do not clean this up with a samples *= ...!
2404                 if ( self->audio_index != INT_MAX && ! self->audio_resample[ self->audio_index ] )
2405                         *samples = *samples * self->audio_codec[ self->audio_index ]->sample_rate / *frequency;
2406
2407                 while ( ret >= 0 && !got_audio )
2408                 {
2409                         // Check if the buffer already contains the samples required
2410                         if ( self->audio_index != INT_MAX &&
2411                                  self->audio_used[ self->audio_index ] >= *samples &&
2412                                  ignore[ self->audio_index ] == 0 )
2413                         {
2414                                 got_audio = 1;
2415                                 break;
2416                         }
2417                         else if ( self->audio_index == INT_MAX )
2418                         {
2419                                 // Check if there is enough audio for all streams
2420                                 got_audio = 1;
2421                                 for ( index = 0; got_audio && index < index_max; index++ )
2422                                         if ( ( self->audio_codec[ index ] && self->audio_used[ index ] < *samples ) || ignore[ index ] )
2423                                                 got_audio = 0;
2424                                 if ( got_audio )
2425                                         break;
2426                         }
2427
2428                         // Read a packet
2429                         pthread_mutex_lock( &self->packets_mutex );
2430                         if ( mlt_deque_count( self->apackets ) )
2431                         {
2432                                 AVPacket *tmp = (AVPacket*) mlt_deque_pop_front( self->apackets );
2433                                 pkt = *tmp;
2434                                 free( tmp );
2435                         }
2436                         else
2437                         {
2438                                 ret = av_read_frame( context, &pkt );
2439                                 if ( ret >= 0 && !self->seekable && pkt.stream_index == self->video_index )
2440                                 {
2441                                         if ( !av_dup_packet( &pkt ) )
2442                                         {
2443                                                 AVPacket *tmp = malloc( sizeof(AVPacket) );
2444                                                 *tmp = pkt;
2445                                                 mlt_deque_push_back( self->vpackets, tmp );
2446                                         }
2447                                 }
2448                         }
2449                         pthread_mutex_unlock( &self->packets_mutex );
2450
2451                         // We only deal with audio from the selected audio index
2452                         index = pkt.stream_index;
2453                         if ( index < MAX_AUDIO_STREAMS && ret >= 0 && pkt.data && pkt.size > 0 && ( index == self->audio_index ||
2454                                  ( self->audio_index == INT_MAX && context->streams[ index ]->codec->codec_type == CODEC_TYPE_AUDIO ) ) )
2455                         {
2456                                 int channels2 = ( self->audio_index == INT_MAX || !self->audio_resample[index] ) ?
2457                                         self->audio_codec[index]->channels : *channels;
2458                                 ret = decode_audio( self, &ignore[index], pkt, channels2, *samples, real_timecode, fps );
2459                         }
2460
2461                         if ( self->seekable || index != self->video_index )
2462                                 av_free_packet( &pkt );
2463
2464                 }
2465
2466                 // Set some additional return values
2467                 *format = mlt_audio_s16;
2468                 if ( self->audio_index != INT_MAX && !self->audio_resample[ self->audio_index ] )
2469                 {
2470                         index = self->audio_index;
2471                         *channels = self->audio_codec[ index ]->channels;
2472                         *frequency = self->audio_codec[ index ]->sample_rate;
2473                         *format = pick_audio_format( self->audio_codec[ index ]->sample_fmt );
2474                         sizeof_sample = sample_bytes( self->audio_codec[ index ] );
2475                 }
2476                 else if ( self->audio_index == INT_MAX )
2477                 {
2478                         for ( index = 0; index < index_max; index++ )
2479                                 if ( self->audio_codec[ index ] && !self->audio_resample[ index ] )
2480                                 {
2481                                         // XXX: This only works if all audio tracks have the same sample format.
2482                                         *format = pick_audio_format( self->audio_codec[ index ]->sample_fmt );
2483                                         sizeof_sample = sample_bytes( self->audio_codec[ index ] );
2484                                         break;
2485                                 }
2486                 }
2487
2488                 // Allocate and set the frame's audio buffer
2489                 int size = mlt_audio_format_size( *format, *samples, *channels );
2490                 *buffer = mlt_pool_alloc( size );
2491                 mlt_frame_set_audio( frame, *buffer, *format, size, mlt_pool_release );
2492
2493                 // Interleave tracks if audio_index=all
2494                 if ( self->audio_index == INT_MAX )
2495                 {
2496                         uint8_t *dest = *buffer;
2497                         int i;
2498                         for ( i = 0; i < *samples; i++ )
2499                         {
2500                                 for ( index = 0; index < index_max; index++ )
2501                                 if ( self->audio_codec[ index ] )
2502                                 {
2503                                         int current_channels = self->audio_codec[ index ]->channels;
2504                                         uint8_t *src = self->audio_buffer[ index ] + i * current_channels * sizeof_sample;
2505                                         memcpy( dest, src, current_channels * sizeof_sample );
2506                                         dest += current_channels * sizeof_sample;
2507                                 }
2508                         }
2509                         for ( index = 0; index < index_max; index++ )
2510                         if ( self->audio_codec[ index ] && self->audio_used[ index ] >= *samples )
2511                         {
2512                                 int current_channels = self->audio_codec[ index ]->channels;
2513                                 uint8_t *src = self->audio_buffer[ index ] + *samples * current_channels * sizeof_sample;
2514                                 self->audio_used[index] -= *samples;
2515                                 memmove( self->audio_buffer[ index ], src, self->audio_used[ index ] * current_channels * sizeof_sample );
2516                         }
2517                 }
2518                 // Copy a single track to the output buffer
2519                 else
2520                 {
2521                         index = self->audio_index;
2522
2523                         // Now handle the audio if we have enough
2524                         if ( self->audio_used[ index ] > 0 )
2525                         {
2526                                 uint8_t *src = self->audio_buffer[ index ];
2527                                 // copy samples from audio_buffer
2528                                 size = self->audio_used[ index ] < *samples ? self->audio_used[ index ] : *samples;
2529                                 memcpy( *buffer, src, size * *channels * sizeof_sample );
2530                                 // supply the remaining requested samples as silence
2531                                 if ( *samples > self->audio_used[ index ] )
2532                                         memset( *buffer + size * *channels * sizeof_sample, 0, ( *samples - self->audio_used[ index ] ) * *channels * sizeof_sample );
2533                                 // reposition the samples within audio_buffer
2534                                 self->audio_used[ index ] -= size;
2535                                 memmove( src, src + size * *channels * sizeof_sample, self->audio_used[ index ] * *channels * sizeof_sample );
2536                         }
2537                         else
2538                         {
2539                                 // Otherwise fill with silence
2540                                 memset( *buffer, 0, *samples * *channels * sizeof_sample );
2541                         }
2542                 }
2543         }
2544         else
2545         {
2546                 // Get silence and don't touch the context
2547                 mlt_frame_get_audio( frame, buffer, format, frequency, channels, samples );
2548         }
2549
2550         // Regardless of speed (other than paused), we expect to get the next frame
2551         if ( !paused )
2552                 self->audio_expected = position + 1;
2553
2554         pthread_mutex_unlock( &self->audio_mutex );
2555
2556         return 0;
2557 }
2558
2559 /** Initialize the audio codec context.
2560 */
2561
2562 static int audio_codec_init( producer_avformat self, int index, mlt_properties properties )
2563 {
2564         // Initialise the codec if necessary
2565         if ( !self->audio_codec[ index ] )
2566         {
2567                 // Get codec context
2568                 AVCodecContext *codec_context = self->audio_format->streams[index]->codec;
2569
2570                 // Find the codec
2571                 AVCodec *codec = avcodec_find_decoder( codec_context->codec_id );
2572
2573                 // If we don't have a codec and we can't initialise it, we can't do much more...
2574                 pthread_mutex_lock( &self->open_mutex );
2575 #if LIBAVCODEC_VERSION_INT >= ((53<<16)+(8<<8)+0)
2576                 if ( codec && avcodec_open2( codec_context, codec, NULL ) >= 0 )
2577 #else
2578                 if ( codec && avcodec_open( codec_context, codec ) >= 0 )
2579 #endif
2580                 {
2581                         // Now store the codec with its destructor
2582                         if ( self->audio_codec[ index ] )
2583                                 avcodec_close( self->audio_codec[ index ] );
2584                         self->audio_codec[ index ] = codec_context;
2585                 }
2586                 else
2587                 {
2588                         // Remember that we can't use self later
2589                         self->audio_index = -1;
2590                 }
2591                 pthread_mutex_unlock( &self->open_mutex );
2592
2593                 // Process properties as AVOptions
2594                 apply_properties( codec_context, properties, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_DECODING_PARAM );
2595 #if LIBAVCODEC_VERSION_INT >= ((52<<16)+(122<<8)+0)
2596                 if ( codec && codec->priv_class && codec_context->priv_data )
2597                         apply_properties( codec_context->priv_data, properties, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_DECODING_PARAM );
2598 #endif
2599         }
2600         return self->audio_codec[ index ] && self->audio_index > -1;
2601 }
2602
2603 /** Set up audio handling.
2604 */
2605
2606 static void producer_set_up_audio( producer_avformat self, mlt_frame frame )
2607 {
2608         // Get the producer
2609         mlt_producer producer = self->parent;
2610
2611         // Get the properties
2612         mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
2613
2614         // Fetch the audio format context
2615         AVFormatContext *context = self->audio_format;
2616
2617         mlt_properties frame_properties = MLT_FRAME_PROPERTIES( frame );
2618
2619         // Get the audio_index
2620         int index = mlt_properties_get_int( properties, "audio_index" );
2621
2622         // Handle all audio tracks
2623         if ( self->audio_index > -1 &&
2624              mlt_properties_get( properties, "audio_index" ) &&
2625              !strcmp( mlt_properties_get( properties, "audio_index" ), "all" ) )
2626                 index = INT_MAX;
2627
2628         // Reopen the file if necessary
2629         if ( !context && self->audio_index > -1 && index > -1 )
2630         {
2631                 producer_open( self, mlt_service_profile( MLT_PRODUCER_SERVICE(producer) ),
2632                         mlt_properties_get( properties, "resource" ), 1 );
2633                 context = self->audio_format;
2634         }
2635
2636         // Exception handling for audio_index
2637         if ( context && index >= (int) context->nb_streams && index < INT_MAX )
2638         {
2639                 for ( index = context->nb_streams - 1;
2640                           index >= 0 && context->streams[ index ]->codec->codec_type != CODEC_TYPE_AUDIO;
2641                           index-- );
2642                 mlt_properties_set_int( properties, "audio_index", index );
2643         }
2644         if ( context && index > -1 && index < INT_MAX &&
2645                  context->streams[ index ]->codec->codec_type != CODEC_TYPE_AUDIO )
2646         {
2647                 index = self->audio_index;
2648                 mlt_properties_set_int( properties, "audio_index", index );
2649         }
2650
2651         // Update the audio properties if the index changed
2652         if ( context && index > -1 && index != self->audio_index )
2653         {
2654                 pthread_mutex_lock( &self->open_mutex );
2655                 if ( self->audio_codec[ self->audio_index ] )
2656                         avcodec_close( self->audio_codec[ self->audio_index ] );
2657                 self->audio_codec[ self->audio_index ] = NULL;
2658                 pthread_mutex_unlock( &self->open_mutex );
2659         }
2660         if ( self->audio_index != -1 )
2661                 self->audio_index = index;
2662         else
2663                 index = -1;
2664
2665         // Get the codec(s)
2666         if ( context && index == INT_MAX )
2667         {
2668                 mlt_properties_set_int( frame_properties, "audio_frequency", self->max_frequency );
2669                 mlt_properties_set_int( frame_properties, "audio_channels", self->total_channels );
2670                 for ( index = 0; index < context->nb_streams; index++ )
2671                 {
2672                         if ( context->streams[ index ]->codec->codec_type == CODEC_TYPE_AUDIO )
2673                                 audio_codec_init( self, index, properties );
2674                 }
2675         }
2676         else if ( context && index > -1 && audio_codec_init( self, index, properties ) )
2677         {
2678                 // Set the frame properties
2679                 if ( index < MAX_AUDIO_STREAMS )
2680                 {
2681                         mlt_properties_set_int( frame_properties, "frequency", self->audio_codec[ index ]->sample_rate );
2682                         mlt_properties_set_int( frame_properties, "channels", self->audio_codec[ index ]->channels );
2683                 }
2684         }
2685         if ( context && index > -1 )
2686         {
2687                 // Add our audio operation
2688                 mlt_frame_push_audio( frame, self );
2689                 mlt_frame_push_audio( frame, producer_get_audio );
2690         }
2691 }
2692
2693 /** Our get frame implementation.
2694 */
2695
2696 static int producer_get_frame( mlt_producer producer, mlt_frame_ptr frame, int index )
2697 {
2698         // Access the private data
2699         mlt_service service = MLT_PRODUCER_SERVICE( producer );
2700         mlt_cache_item cache_item = mlt_service_cache_get( service, "producer_avformat" );
2701         producer_avformat self = mlt_cache_item_data( cache_item, NULL );
2702
2703         // If cache miss
2704         if ( !self )
2705         {
2706                 self = calloc( 1, sizeof( struct producer_avformat_s ) );
2707                 producer->child = self;
2708                 self->parent = producer;
2709                 mlt_service_cache_put( service, "producer_avformat", self, 0, (mlt_destructor) producer_avformat_close );
2710                 cache_item = mlt_service_cache_get( service, "producer_avformat" );
2711         }
2712
2713         // Create an empty frame
2714         *frame = mlt_frame_init( service);
2715
2716         if ( *frame )
2717         {
2718                 mlt_properties_set_data( MLT_FRAME_PROPERTIES(*frame), "avformat_cache", cache_item, 0, (mlt_destructor) mlt_cache_item_close, NULL );
2719         }
2720         else
2721         {
2722                 mlt_cache_item_close( cache_item );
2723                 return 1;
2724         }
2725
2726         // Update timecode on the frame we're creating
2727         mlt_frame_set_position( *frame, mlt_producer_position( producer ) );
2728
2729         // Set up the video
2730         producer_set_up_video( self, *frame );
2731
2732         // Set up the audio
2733         producer_set_up_audio( self, *frame );
2734
2735         // Set the position of this producer
2736         mlt_position position = self->seekable ? mlt_producer_frame( producer ) : self->nonseek_position++;
2737         mlt_properties_set_position( MLT_FRAME_PROPERTIES( *frame ), "original_position", position );
2738
2739         // Calculate the next timecode
2740         mlt_producer_prepare_next( producer );
2741
2742         return 0;
2743 }
2744
2745 static void producer_avformat_close( producer_avformat self )
2746 {
2747         mlt_log_debug( NULL, "producer_avformat_close\n" );
2748
2749         // Cleanup av contexts
2750         av_free_packet( &self->pkt );
2751         av_free( self->av_frame );
2752         pthread_mutex_lock( &self->open_mutex );
2753         int i;
2754         for ( i = 0; i < MAX_AUDIO_STREAMS; i++ )
2755         {
2756                 if ( self->audio_resample[i] )
2757                         audio_resample_close( self->audio_resample[i] );
2758                 mlt_pool_release( self->audio_buffer[i] );
2759                 av_free( self->decode_buffer[i] );
2760                 if ( self->audio_codec[i] )
2761                         avcodec_close( self->audio_codec[i] );
2762                 self->audio_codec[i] = NULL;
2763         }
2764         if ( self->video_codec )
2765                 avcodec_close( self->video_codec );
2766         self->video_codec = NULL;
2767         // Close the file
2768 #if LIBAVFORMAT_VERSION_INT >= ((53<<16)+(17<<8)+0)
2769         if ( self->dummy_context )
2770                 avformat_close_input( &self->dummy_context );
2771         if ( self->seekable && self->audio_format )
2772                 avformat_close_input( &self->audio_format );
2773         if ( self->video_format )
2774                 avformat_close_input( &self->video_format );
2775 #else
2776         if ( self->dummy_context )
2777                 av_close_input_file( self->dummy_context );
2778         if ( self->seekable && self->audio_format )
2779                 av_close_input_file( self->audio_format );
2780         if ( self->video_format )
2781                 av_close_input_file( self->video_format );
2782 #endif
2783         pthread_mutex_unlock( &self->open_mutex );
2784 #ifdef VDPAU
2785         vdpau_producer_close( self );
2786 #endif
2787         if ( self->image_cache )
2788                 mlt_cache_close( self->image_cache );
2789
2790         // Cleanup the mutexes
2791         pthread_mutex_destroy( &self->audio_mutex );
2792         pthread_mutex_destroy( &self->video_mutex );
2793         pthread_mutex_destroy( &self->packets_mutex );
2794         pthread_mutex_destroy( &self->open_mutex );
2795
2796         // Cleanup the packet queues
2797         AVPacket *pkt;
2798         if ( self->apackets )
2799         {
2800                 while ( ( pkt = mlt_deque_pop_back( self->apackets ) ) )
2801                 {
2802                         av_free_packet( pkt );
2803                         free( pkt );
2804                 }
2805                 mlt_deque_close( self->apackets );
2806                 self->apackets = NULL;
2807         }
2808         if ( self->vpackets )
2809         {
2810                 while ( ( pkt = mlt_deque_pop_back( self->vpackets ) ) )
2811                 {
2812                         av_free_packet( pkt );
2813                         free( pkt );
2814                 }
2815                 mlt_deque_close( self->vpackets );
2816                 self->vpackets = NULL;
2817         }
2818
2819         free( self );
2820 }
2821
2822 static void producer_close( mlt_producer parent )
2823 {
2824         // Remove this instance from the cache
2825         mlt_service_cache_purge( MLT_PRODUCER_SERVICE(parent) );
2826
2827         // Close the parent
2828         parent->close = NULL;
2829         mlt_producer_close( parent );
2830
2831         // Free the memory
2832         free( parent );
2833 }