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 (10)
  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         ReSampleContext *audio_resample[ MAX_AUDIO_STREAMS ];
  95         mlt_position audio_expected;
  96         mlt_position video_expected;
  97         int audio_index;
  98         int video_index;
  99         int first_pts;
 100         int64_t last_position;
 101         int seekable;
 102         int64_t current_position;
 103         mlt_position nonseek_position;
 104         int got_picture;
 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         double resample_factor;
 117         mlt_cache image_cache;
 118         mlt_cache alpha_cache;
 119         int colorspace;
 120         pthread_mutex_t video_mutex;
 121         pthread_mutex_t audio_mutex;
 122         mlt_deque apackets;
 123         mlt_deque vpackets;
 124         pthread_mutex_t packets_mutex;
 125         pthread_mutex_t open_mutex;
 126 #ifdef VDPAU
 127         struct
 128         {
 129                 // from FFmpeg
 130                 struct vdpau_render_state render_states[MAX_VDPAU_SURFACES];
 131
 132                 // internal
 133                 mlt_deque deque;
 134                 int b_age;
 135                 int ip_age[2];
 136                 int is_decoded;
 137                 uint8_t *buffer;
 138
 139                 VdpDevice device;
 140                 VdpDecoder decoder;
 141         } *vdpau;
 142 #endif
 143 };
 144 typedef struct producer_avformat_s *producer_avformat;
 145
 146 // Forward references.
 147 static int list_components( char* file );
 148 static int producer_open( producer_avformat self, mlt_profile profile, const char *URL, int take_lock );
 149 static int producer_get_frame( mlt_producer producer, mlt_frame_ptr frame, int index );
 150 static void producer_avformat_close( producer_avformat );
 151 static void producer_close( mlt_producer parent );
 152 static void producer_set_up_video( producer_avformat self, mlt_frame frame );
 153 static void producer_set_up_audio( producer_avformat self, mlt_frame frame );
 154 static void apply_properties( void *obj, mlt_properties properties, int flags );
 155 static int video_codec_init( producer_avformat self, int index, mlt_properties properties );
 156 static void get_audio_streams_info( producer_avformat self );
 157
 158 #ifdef VDPAU
 159 #include "vdpau.c"
 160 #endif
 161
 162 /** Constructor for libavformat.
 163 */
 164
 165 mlt_producer producer_avformat_init( mlt_profile profile, const char *service, char *file )
 166 {
 167         if ( list_components( file ) )
 168                 return NULL;
 169
 170         mlt_producer producer = NULL;
 171
 172         // Check that we have a non-NULL argument
 173         if ( file )
 174         {
 175                 // Construct the producer
 176                 producer_avformat self = calloc( 1, sizeof( struct producer_avformat_s ) );
 177                 producer = calloc( 1, sizeof( struct mlt_producer_s ) );
 178
 179                 // Initialise it
 180                 if ( mlt_producer_init( producer, self ) == 0 )
 181                 {
 182                         self->parent = producer;
 183
 184                         // Get the properties
 185                         mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
 186
 187                         // Set the resource property (required for all producers)
 188                         mlt_properties_set( properties, "resource", file );
 189
 190                         // Register transport implementation with the producer
 191                         producer->close = (mlt_destructor) producer_close;
 192
 193                         // Register our get_frame implementation
 194                         producer->get_frame = producer_get_frame;
 195
 196                         if ( strcmp( service, "avformat-novalidate" ) )
 197                         {
 198                                 // Open the file
 199                                 if ( producer_open( self, profile, file, 1 ) != 0 )
 200                                 {
 201                                         // Clean up
 202                                         mlt_producer_close( producer );
 203                                         producer = NULL;
 204                                 }
 205                                 else if ( self->seekable )
 206                                 {
 207                                         // Close the file to release resources for large playlists - reopen later as needed
 208 #if LIBAVFORMAT_VERSION_INT >= ((53<<16)+(17<<8)+0)
 209                                         if ( self->audio_format )
 210                                                 avformat_close_input( &self->audio_format );
 211                                         if ( self->video_format )
 212                                                 avformat_close_input( &self->video_format );
 213 #else
 214                                         if ( self->audio_format )
 215                                                 av_close_input_file( self->audio_format );
 216                                         if ( self->video_format )
 217                                                 av_close_input_file( self->video_format );
 218 #endif
 219                                         self->audio_format = NULL;
 220                                         self->video_format = NULL;
 221                                 }
 222                         }
 223                         if ( producer )
 224                         {
 225                                 // Default the user-selectable indices from the auto-detected indices
 226                                 mlt_properties_set_int( properties, "audio_index",  self->audio_index );
 227                                 mlt_properties_set_int( properties, "video_index",  self->video_index );
 228 #ifdef VDPAU
 229                                 mlt_service_cache_set_size( MLT_PRODUCER_SERVICE(producer), "producer_avformat", 5 );
 230 #endif
 231                                 mlt_service_cache_put( MLT_PRODUCER_SERVICE(producer), "producer_avformat", self, 0, (mlt_destructor) producer_avformat_close );
 232                         }
 233                 }
 234         }
 235         return producer;
 236 }
 237
 238 int list_components( char* file )
 239 {
 240         int skip = 0;
 241
 242         // Report information about available demuxers and codecs as YAML Tiny
 243         if ( file && strstr( file, "f-list" ) )
 244         {
 245                 fprintf( stderr, "---\nformats:\n" );
 246                 AVInputFormat *format = NULL;
 247                 while ( ( format = av_iformat_next( format ) ) )
 248                         fprintf( stderr, "  - %s\n", format->name );
 249                 fprintf( stderr, "...\n" );
 250                 skip = 1;
 251         }
 252         if ( file && strstr( file, "acodec-list" ) )
 253         {
 254                 fprintf( stderr, "---\naudio_codecs:\n" );
 255                 AVCodec *codec = NULL;
 256                 while ( ( codec = av_codec_next( codec ) ) )
 257                         if ( codec->decode && codec->type == CODEC_TYPE_AUDIO )
 258                                 fprintf( stderr, "  - %s\n", codec->name );
 259                 fprintf( stderr, "...\n" );
 260                 skip = 1;
 261         }
 262         if ( file && strstr( file, "vcodec-list" ) )
 263         {
 264                 fprintf( stderr, "---\nvideo_codecs:\n" );
 265                 AVCodec *codec = NULL;
 266                 while ( ( codec = av_codec_next( codec ) ) )
 267                         if ( codec->decode && codec->type == CODEC_TYPE_VIDEO )
 268                                 fprintf( stderr, "  - %s\n", codec->name );
 269                 fprintf( stderr, "...\n" );
 270                 skip = 1;
 271         }
 272
 273         return skip;
 274 }
 275
 276 /** Find the default streams.
 277 */
 278
 279 static mlt_properties find_default_streams( producer_avformat self )
 280 {
 281         int i;
 282         char key[200];
 283 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(8<<8)+0)
 284         AVDictionaryEntry *tag = NULL;
 285 #else
 286         AVMetadataTag *tag = NULL;
 287 #endif
 288         AVFormatContext *context = self->video_format;
 289         mlt_properties meta_media = MLT_PRODUCER_PROPERTIES( self->parent );
 290
 291         // Default to the first audio and video streams found
 292         self->audio_index = -1;
 293         self->video_index = -1;
 294
 295         mlt_properties_set_int( meta_media, "meta.media.nb_streams", context->nb_streams );
 296
 297         // Allow for multiple audio and video streams in the file and select first of each (if available)
 298         for( i = 0; i < context->nb_streams; i++ )
 299         {
 300                 // Get the codec context
 301                 AVStream *stream = context->streams[ i ];
 302                 if ( ! stream ) continue;
 303                 AVCodecContext *codec_context = stream->codec;
 304                 if ( ! codec_context ) continue;
 305                 AVCodec *codec = avcodec_find_decoder( codec_context->codec_id );
 306                 if ( ! codec ) continue;
 307
 308                 snprintf( key, sizeof(key), "meta.media.%d.stream.type", i );
 309
 310                 // Determine the type and obtain the first index of each type
 311                 switch( codec_context->codec_type )
 312                 {
 313                         case CODEC_TYPE_VIDEO:
 314                                 // Use first video stream
 315                                 if ( self->video_index < 0 )
 316                                         self->video_index = i;
 317                                 mlt_properties_set( meta_media, key, "video" );
 318                                 snprintf( key, sizeof(key), "meta.media.%d.stream.frame_rate", i );
 319 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(42<<8)+0)
 320                                 double ffmpeg_fps = av_q2d( context->streams[ i ]->avg_frame_rate );
 321                                 if ( isnan( ffmpeg_fps ) || ffmpeg_fps == 0 )
 322                                         ffmpeg_fps = av_q2d( context->streams[ i ]->r_frame_rate );
 323                                 mlt_properties_set_double( meta_media, key, ffmpeg_fps );
 324 #else
 325                                 mlt_properties_set_double( meta_media, key, av_q2d( context->streams[ i ]->r_frame_rate ) );
 326 #endif
 327
 328 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(21<<8)+0)
 329                                 snprintf( key, sizeof(key), "meta.media.%d.stream.sample_aspect_ratio", i );
 330                                 mlt_properties_set_double( meta_media, key, av_q2d( context->streams[ i ]->sample_aspect_ratio ) );
 331 #endif
 332                                 snprintf( key, sizeof(key), "meta.media.%d.codec.width", i );
 333                                 mlt_properties_set_int( meta_media, key, codec_context->width );
 334                                 snprintf( key, sizeof(key), "meta.media.%d.codec.height", i );
 335                                 mlt_properties_set_int( meta_media, key, codec_context->height );
 336                                 snprintf( key, sizeof(key), "meta.media.%d.codec.frame_rate", i );
 337                                 mlt_properties_set_double( meta_media, key, (double) codec_context->time_base.den /
 338                                                                                    ( codec_context->time_base.num == 0 ? 1 : codec_context->time_base.num ) );
 339                                 snprintf( key, sizeof(key), "meta.media.%d.codec.pix_fmt", i );
 340 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(3<<8)+0)
 341                                 mlt_properties_set( meta_media, key, av_get_pix_fmt_name( codec_context->pix_fmt ) );
 342 #else
 343                                 mlt_properties_set( meta_media, key, avcodec_get_pix_fmt_name( codec_context->pix_fmt ) );
 344 #endif
 345                                 snprintf( key, sizeof(key), "meta.media.%d.codec.sample_aspect_ratio", i );
 346                                 mlt_properties_set_double( meta_media, key, av_q2d( codec_context->sample_aspect_ratio ) );
 347 #if LIBAVCODEC_VERSION_INT > ((52<<16)+(28<<8)+0)
 348                                 snprintf( key, sizeof(key), "meta.media.%d.codec.colorspace", i );
 349                                 switch ( codec_context->colorspace )
 350                                 {
 351                                 case AVCOL_SPC_SMPTE240M:
 352                                         mlt_properties_set_int( meta_media, key, 240 );
 353                                         break;
 354                                 case AVCOL_SPC_BT470BG:
 355                                 case AVCOL_SPC_SMPTE170M:
 356                                         mlt_properties_set_int( meta_media, key, 601 );
 357                                         break;
 358                                 case AVCOL_SPC_BT709:
 359                                         mlt_properties_set_int( meta_media, key, 709 );
 360                                         break;
 361                                 default:
 362                                         // This is a heuristic Charles Poynton suggests in "Digital Video and HDTV"
 363                                         mlt_properties_set_int( meta_media, key, codec_context->width * codec_context->height > 750000 ? 709 : 601 );
 364                                         break;
 365                                 }
 366 #endif
 367                                 break;
 368                         case CODEC_TYPE_AUDIO:
 369                                 // Use first audio stream
 370                                 if ( self->audio_index < 0 )
 371                                         self->audio_index = i;
 372                                 mlt_properties_set( meta_media, key, "audio" );
 373 #if LIBAVUTIL_VERSION_INT >= ((50<<16)+(38<<8)+0)
 374                                 snprintf( key, sizeof(key), "meta.media.%d.codec.sample_fmt", i );
 375                                 mlt_properties_set( meta_media, key, av_get_sample_fmt_name( codec_context->sample_fmt ) );
 376 #elif (LIBAVCODEC_VERSION_INT >= ((51<<16)+(71<<8)+0))
 377                                 snprintf( key, sizeof(key), "meta.media.%d.codec.sample_fmt", i );
 378                                 mlt_properties_set( meta_media, key, avcodec_get_sample_fmt_name( codec_context->sample_fmt ) );
 379 #endif
 380                                 snprintf( key, sizeof(key), "meta.media.%d.codec.sample_rate", i );
 381                                 mlt_properties_set_int( meta_media, key, codec_context->sample_rate );
 382                                 snprintf( key, sizeof(key), "meta.media.%d.codec.channels", i );
 383                                 mlt_properties_set_int( meta_media, key, codec_context->channels );
 384                                 break;
 385                         default:
 386                                 break;
 387                 }
 388 //              snprintf( key, sizeof(key), "meta.media.%d.stream.time_base", i );
 389 //              mlt_properties_set_double( meta_media, key, av_q2d( context->streams[ i ]->time_base ) );
 390                 snprintf( key, sizeof(key), "meta.media.%d.codec.name", i );
 391                 mlt_properties_set( meta_media, key, codec->name );
 392 #if (LIBAVCODEC_VERSION_INT >= ((51<<16)+(55<<8)+0))
 393                 snprintf( key, sizeof(key), "meta.media.%d.codec.long_name", i );
 394                 mlt_properties_set( meta_media, key, codec->long_name );
 395 #endif
 396                 snprintf( key, sizeof(key), "meta.media.%d.codec.bit_rate", i );
 397                 mlt_properties_set_int( meta_media, key, codec_context->bit_rate );
 398 //              snprintf( key, sizeof(key), "meta.media.%d.codec.time_base", i );
 399 //              mlt_properties_set_double( meta_media, key, av_q2d( codec_context->time_base ) );
 400 //              snprintf( key, sizeof(key), "meta.media.%d.codec.profile", i );
 401 //              mlt_properties_set_int( meta_media, key, codec_context->profile );
 402 //              snprintf( key, sizeof(key), "meta.media.%d.codec.level", i );
 403 //              mlt_properties_set_int( meta_media, key, codec_context->level );
 404
 405                 // Read Metadata
 406 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(31<<8)+0)
 407 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(8<<8)+0)
 408                 while ( ( tag = av_dict_get( stream->metadata, "", tag, AV_DICT_IGNORE_SUFFIX ) ) )
 409 #else
 410                 while ( ( tag = av_metadata_get( stream->metadata, "", tag, AV_METADATA_IGNORE_SUFFIX ) ) )
 411 #endif
 412                 {
 413                         if ( tag->value && strcmp( tag->value, "" ) && strcmp( tag->value, "und" ) )
 414                         {
 415                                 snprintf( key, sizeof(key), "meta.attr.%d.stream.%s.markup", i, tag->key );
 416                                 mlt_properties_set( meta_media, key, tag->value );
 417                         }
 418                 }
 419 #endif
 420         }
 421 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(31<<8)+0)
 422 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(8<<8)+0)
 423         while ( ( tag = av_dict_get( context->metadata, "", tag, AV_DICT_IGNORE_SUFFIX ) ) )
 424 #else
 425         while ( ( tag = av_metadata_get( context->metadata, "", tag, AV_METADATA_IGNORE_SUFFIX ) ) )
 426 #endif
 427         {
 428                 if ( tag->value && strcmp( tag->value, "" ) && strcmp( tag->value, "und" ) )
 429                 {
 430                         snprintf( key, sizeof(key), "meta.attr.%s.markup", tag->key );
 431                         mlt_properties_set( meta_media, key, tag->value );
 432                 }
 433         }
 434 #else
 435         if ( context->title && strcmp( context->title, "" ) )
 436                 mlt_properties_set(properties, "meta.attr.title.markup", context->title );
 437         if ( context->author && strcmp( context->author, "" ) )
 438                 mlt_properties_set(properties, "meta.attr.author.markup", context->author );
 439         if ( context->copyright && strcmp( context->copyright, "" ) )
 440                 mlt_properties_set(properties, "meta.attr.copyright.markup", context->copyright );
 441         if ( context->comment )
 442                 mlt_properties_set(properties, "meta.attr.comment.markup", context->comment );
 443         if ( context->album )
 444                 mlt_properties_set(properties, "meta.attr.album.markup", context->album );
 445         if ( context->year )
 446                 mlt_properties_set_int(properties, "meta.attr.year.markup", context->year );
 447         if ( context->track )
 448                 mlt_properties_set_int(properties, "meta.attr.track.markup", context->track );
 449 #endif
 450
 451         return meta_media;
 452 }
 453
 454 static inline int dv_is_pal( AVPacket *pkt )
 455 {
 456         return pkt->data[3] & 0x80;
 457 }
 458
 459 static int dv_is_wide( AVPacket *pkt )
 460 {
 461         int i = 80 /* block size */ *3 /* VAUX starts at block 3 */ +3 /* skip block header */;
 462
 463         for ( ; i < pkt->size; i += 5 /* packet size */ )
 464         {
 465                 if ( pkt->data[ i ] == 0x61 )
 466                 {
 467                         uint8_t x = pkt->data[ i + 2 ] & 0x7;
 468                         return ( x == 2 ) || ( x == 7 );
 469                 }
 470         }
 471         return 0;
 472 }
 473
 474 static double get_aspect_ratio( mlt_properties properties, AVStream *stream, AVCodecContext *codec_context, AVPacket *pkt )
 475 {
 476         double aspect_ratio = 1.0;
 477
 478         if ( codec_context->codec_id == CODEC_ID_DVVIDEO )
 479         {
 480                 if ( pkt )
 481                 {
 482                         if ( dv_is_pal( pkt ) )
 483                         {
 484                                 if ( dv_is_wide( pkt ) )
 485                                 {
 486                                         mlt_properties_set_int( properties, "meta.media.sample_aspect_num", 64 );
 487                                         mlt_properties_set_int( properties, "meta.media.sample_aspect_den", 45 );
 488                                 }
 489                                 else
 490                                 {
 491                                         mlt_properties_set_int( properties, "meta.media.sample_aspect_num", 16 );
 492                                         mlt_properties_set_int( properties, "meta.media.sample_aspect_den", 15 );
 493                                 }
 494                         }
 495                         else
 496                         {
 497                                 if ( dv_is_wide( pkt ) )
 498                                 {
 499                                         mlt_properties_set_int( properties, "meta.media.sample_aspect_num", 32 );
 500                                         mlt_properties_set_int( properties, "meta.media.sample_aspect_den", 27 );
 501                                 }
 502                                 else
 503                                 {
 504                                         mlt_properties_set_int( properties, "meta.media.sample_aspect_num", 8 );
 505                                         mlt_properties_set_int( properties, "meta.media.sample_aspect_den", 9 );
 506                                 }
 507                         }
 508                 }
 509                 else
 510                 {
 511                         AVRational ar =
 512 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(21<<8)+0)
 513                                 stream->sample_aspect_ratio;
 514 #else
 515                                 codec_context->sample_aspect_ratio;
 516 #endif
 517                         // Override FFmpeg's notion of DV aspect ratios, which are
 518                         // based upon a width of 704. Since we do not have a normaliser
 519                         // that crops (nor is cropping 720 wide ITU-R 601 video always desirable)
 520                         // we just coerce the values to facilitate a passive behaviour through
 521                         // the rescale normaliser when using equivalent producers and consumers.
 522                         // = display_aspect / (width * height)
 523                         if ( ar.num == 10 && ar.den == 11 )
 524                         {
 525                                 // 4:3 NTSC
 526                                 mlt_properties_set_int( properties, "meta.media.sample_aspect_num", 8 );
 527                                 mlt_properties_set_int( properties, "meta.media.sample_aspect_den", 9 );
 528                         }
 529                         else if ( ar.num == 59 && ar.den == 54 )
 530                         {
 531                                 // 4:3 PAL
 532                                 mlt_properties_set_int( properties, "meta.media.sample_aspect_num", 16 );
 533                                 mlt_properties_set_int( properties, "meta.media.sample_aspect_den", 15 );
 534                         }
 535                         else if ( ar.num == 40 && ar.den == 33 )
 536                         {
 537                                 // 16:9 NTSC
 538                                 mlt_properties_set_int( properties, "meta.media.sample_aspect_num", 32 );
 539                                 mlt_properties_set_int( properties, "meta.media.sample_aspect_den", 27 );
 540                         }
 541                         else if ( ar.num == 118 && ar.den == 81 )
 542                         {
 543                                 // 16:9 PAL
 544                                 mlt_properties_set_int( properties, "meta.media.sample_aspect_num", 64 );
 545                                 mlt_properties_set_int( properties, "meta.media.sample_aspect_den", 45 );
 546                         }
 547                 }
 548         }
 549         else
 550         {
 551                 AVRational codec_sar = codec_context->sample_aspect_ratio;
 552                 AVRational stream_sar =
 553 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(21<<8)+0)
 554                         stream->sample_aspect_ratio;
 555 #else
 556                         { 0, 1 };
 557 #endif
 558                 if ( codec_sar.num > 0 )
 559                 {
 560                         mlt_properties_set_int( properties, "meta.media.sample_aspect_num", codec_sar.num );
 561                         mlt_properties_set_int( properties, "meta.media.sample_aspect_den", codec_sar.den );
 562                 }
 563                 else if ( stream_sar.num > 0 )
 564                 {
 565                         mlt_properties_set_int( properties, "meta.media.sample_aspect_num", stream_sar.num );
 566                         mlt_properties_set_int( properties, "meta.media.sample_aspect_den", stream_sar.den );
 567                 }
 568                 else
 569                 {
 570                         mlt_properties_set_int( properties, "meta.media.sample_aspect_num", 1 );
 571                         mlt_properties_set_int( properties, "meta.media.sample_aspect_den", 1 );
 572                 }
 573         }
 574         AVRational ar = { mlt_properties_get_double( properties, "meta.media.sample_aspect_num" ), mlt_properties_get_double( properties, "meta.media.sample_aspect_den" ) };
 575         aspect_ratio = av_q2d( ar );
 576         mlt_properties_set_double( properties, "aspect_ratio", aspect_ratio );
 577
 578         return aspect_ratio;
 579 }
 580
 581 #if LIBAVFORMAT_VERSION_INT > ((53<<16)+(6<<8)+0)
 582 static char* parse_url( mlt_profile profile, const char* URL, AVInputFormat **format, AVDictionary **params )
 583 #else
 584 static char* parse_url( mlt_profile profile, const char* URL, AVInputFormat **format, AVFormatParameters *params )
 585 #endif
 586 {
 587         if ( !URL ) return NULL;
 588
 589         char *result = NULL;
 590         char *protocol = strdup( URL );
 591         char *url = strchr( protocol, ':' );
 592
 593         // Only if there is not a protocol specification that avformat can handle
 594 #if LIBAVFORMAT_VERSION_MAJOR >= 53
 595         if ( url && avio_check( URL, 0 ) < 0 )
 596 #else
 597         if ( url && !url_exist( URL ) )
 598 #endif
 599         {
 600                 // Truncate protocol string
 601                 url[0] = 0;
 602                 mlt_log_debug( NULL, "%s: protocol=%s resource=%s\n", __FUNCTION__, protocol, url + 1 );
 603
 604                 // Lookup the format
 605                 *format = av_find_input_format( protocol );
 606
 607                 // Eat the format designator
 608                 result = ++url;
 609
 610                 if ( *format )
 611                 {
 612 #if LIBAVFORMAT_VERSION_INT > ((53<<16)+(6<<8)+0)
 613                         // support for legacy width and height parameters
 614                         char *width = NULL;
 615                         char *height = NULL;
 616 #else
 617                         // These are required by video4linux2 (defaults)
 618                         params->width = profile->width;
 619                         params->height = profile->height;
 620                         if ( !strstr( URL, "&frame_rate" ) )
 621                                 params->time_base = (AVRational){ profile->frame_rate_den, profile->frame_rate_num };
 622                         params->channels = 2;
 623                         params->sample_rate = 48000;
 624 #endif
 625
 626                         // Parse out params
 627                         url = strchr( url, '?' );
 628                         while ( url )
 629                         {
 630                                 url[0] = 0;
 631                                 char *name = strdup( ++url );
 632                                 char *value = strchr( name, '=' );
 633                                 if ( !value )
 634                                         // Also accept : as delimiter for backwards compatibility.
 635                                         value = strchr( name, ':' );
 636                                 if ( value )
 637                                 {
 638                                         value[0] = 0;
 639                                         value++;
 640                                         char *t = strchr( value, '&' );
 641                                         if ( t )
 642                                                 t[0] = 0;
 643 #if LIBAVFORMAT_VERSION_INT > ((53<<16)+(6<<8)+0)
 644                                         // translate old parameters to new av_dict names
 645                                         if ( !strcmp( name, "frame_rate" ) )
 646                                                 av_dict_set( params, "framerate", value, 0 );
 647                                         else if ( !strcmp( name, "pix_fmt" ) )
 648                                                 av_dict_set( params, "pixel_format", value, 0 );
 649                                         else if ( !strcmp( name, "width" ) )
 650                                                 width = strdup( value );
 651                                         else if ( !strcmp( name, "height" ) )
 652                                                 height = strdup( value );
 653                                         else
 654                                                 // generic demux/device option support
 655                                                 av_dict_set( params, name, value, 0 );
 656 #else
 657                                         if ( !strcmp( name, "frame_rate" ) )
 658                                                 params->time_base.den = atoi( value );
 659                                         else if ( !strcmp( name, "frame_rate_base" ) )
 660                                                 params->time_base.num = atoi( value );
 661                                         else if ( !strcmp( name, "sample_rate" ) )
 662                                                 params->sample_rate = atoi( value );
 663                                         else if ( !strcmp( name, "channel" ) )
 664                                                 params->channel = atoi( value );
 665                                         else if ( !strcmp( name, "channels" ) )
 666                                                 params->channels = atoi( value );
 667 #if (LIBAVUTIL_VERSION_INT > ((50<<16)+(7<<8)+0))
 668                                         else if ( !strcmp( name, "pix_fmt" ) )
 669                                                 params->pix_fmt = av_get_pix_fmt( value );
 670 #endif
 671                                         else if ( !strcmp( name, "width" ) )
 672                                                 params->width = atoi( value );
 673                                         else if ( !strcmp( name, "height" ) )
 674                                                 params->height = atoi( value );
 675                                         else if ( !strcmp( name, "standard" ) )
 676                                                 params->standard = strdup( value );
 677 #endif
 678                                 }
 679                                 free( name );
 680                                 url = strchr( url, '&' );
 681                         }
 682 #if LIBAVFORMAT_VERSION_INT > ((53<<16)+(6<<8)+0)
 683                         // continued support for legacy width and height parameters
 684                         if ( width && height )
 685                         {
 686                                 char *s = malloc( strlen( width ) + strlen( height ) + 2 );
 687                                 strcpy( s, width );
 688                                 strcat( s, "x");
 689                                 strcat( s, height );
 690                                 av_dict_set( params, "video_size", s, 0 );
 691                                 free( s );
 692                         }
 693                         if ( width ) free( width );
 694                         if ( height ) free ( height );
 695 #endif
 696                 }
 697                 result = strdup( result );
 698         }
 699         else
 700         {
 701                 result = strdup( URL );
 702         }
 703         free( protocol );
 704         return result;
 705 }
 706
 707 static int get_basic_info( producer_avformat self, mlt_profile profile, const char *filename )
 708 {
 709         int error = 0;
 710
 711         // Get the properties
 712         mlt_properties properties = MLT_PRODUCER_PROPERTIES( self->parent );
 713
 714         AVFormatContext *format = self->video_format;
 715
 716         // We will treat everything with the producer fps.
 717         // TODO: make this more flexible.
 718         double fps = mlt_profile_fps( profile );
 719
 720         // Get the duration
 721         if ( !mlt_properties_get_int( properties, "_length_computed" ) )
 722         {
 723                 // The _length_computed flag prevents overwriting explicity set length/out/eof properties
 724                 // when producer_open is called after initial call when restoring or reseting the producer.
 725                 if ( format->duration != AV_NOPTS_VALUE )
 726                 {
 727                         // This isn't going to be accurate for all formats
 728                         mlt_position frames = ( mlt_position )( ( ( double )format->duration / ( double )AV_TIME_BASE ) * fps );
 729                         mlt_properties_set_position( properties, "out", frames - 1 );
 730                         mlt_properties_set_position( properties, "length", frames );
 731                         mlt_properties_set_int( properties, "_length_computed", 1 );
 732                 }
 733                 else
 734                 {
 735                         // Set live sources to run forever
 736                         mlt_properties_set_position( properties, "length", INT_MAX );
 737                         mlt_properties_set_position( properties, "out", INT_MAX - 1 );
 738                         mlt_properties_set( properties, "eof", "loop" );
 739                         mlt_properties_set_int( properties, "_length_computed", 1 );
 740                 }
 741         }
 742
 743         // Check if we're seekable
 744         // avdevices are typically AVFMT_NOFILE and not seekable
 745         self->seekable = !format->iformat || !( format->iformat->flags & AVFMT_NOFILE );
 746         if ( format->pb )
 747         {
 748                 // protocols can indicate if they support seeking
 749 #if LIBAVFORMAT_VERSION_MAJOR >= 53
 750                 self->seekable = format->pb->seekable;
 751 #else
 752                 URLContext *uc = url_fileno( format->pb );
 753                 if ( uc )
 754                         self->seekable = !uc->is_streamed;
 755 #endif
 756         }
 757         if ( self->seekable )
 758         {
 759                 // Do a more rigourous test of seekable on a disposable context
 760                 self->seekable = av_seek_frame( format, -1, format->start_time, AVSEEK_FLAG_BACKWARD ) >= 0;
 761                 mlt_properties_set_int( properties, "seekable", self->seekable );
 762                 self->dummy_context = format;
 763 #if LIBAVFORMAT_VERSION_INT > ((53<<16)+(6<<8)+0)
 764                 self->video_format = NULL;
 765                 avformat_open_input( &self->video_format, filename, NULL, NULL );
 766                 avformat_find_stream_info( self->video_format, NULL );
 767 #else
 768                 av_open_input_file( &self->video_format, filename, NULL, 0, NULL );
 769                 av_find_stream_info( self->video_format );
 770 #endif
 771                 format = self->video_format;
 772         }
 773
 774         // Fetch the width, height and aspect ratio
 775         if ( self->video_index != -1 )
 776         {
 777                 AVCodecContext *codec_context = format->streams[ self->video_index ]->codec;
 778                 mlt_properties_set_int( properties, "width", codec_context->width );
 779                 mlt_properties_set_int( properties, "height", codec_context->height );
 780
 781                 if ( codec_context->codec_id == CODEC_ID_DVVIDEO )
 782                 {
 783                         // Fetch the first frame of DV so we can read it directly
 784                         AVPacket pkt;
 785                         int ret = 0;
 786                         while ( ret >= 0 )
 787                         {
 788                                 ret = av_read_frame( format, &pkt );
 789                                 if ( ret >= 0 && pkt.stream_index == self->video_index && pkt.size > 0 )
 790                                 {
 791                                         get_aspect_ratio( properties, format->streams[ self->video_index ], codec_context, &pkt );
 792                                         break;
 793                                 }
 794                         }
 795                 }
 796                 else
 797                 {
 798                         get_aspect_ratio( properties, format->streams[ self->video_index ], codec_context, NULL );
 799                 }
 800
 801 #ifdef SWSCALE
 802                 // Verify that we can convert this to YUV 4:2:2
 803                 // TODO: we can now also return RGB and RGBA and quite possibly more in the future.
 804                 struct SwsContext *context = sws_getContext( codec_context->width, codec_context->height, codec_context->pix_fmt,
 805                         codec_context->width, codec_context->height, PIX_FMT_YUYV422, SWS_BILINEAR, NULL, NULL, NULL);
 806                 if ( context )
 807                         sws_freeContext( context );
 808                 else
 809                         error = 1;
 810 #endif
 811         }
 812         return error;
 813 }
 814
 815 /** Open the file.
 816 */
 817
 818 static int producer_open( producer_avformat self, mlt_profile profile, const char *URL, int take_lock )
 819 {
 820         // Return an error code (0 == no error)
 821         int error = 0;
 822         mlt_properties properties = MLT_PRODUCER_PROPERTIES( self->parent );
 823
 824         // Lock the service
 825         if ( take_lock )
 826         {
 827                 pthread_mutex_init( &self->audio_mutex, NULL );
 828                 pthread_mutex_init( &self->video_mutex, NULL );
 829                 pthread_mutex_init( &self->packets_mutex, NULL );
 830                 pthread_mutex_init( &self->open_mutex, NULL );
 831                 pthread_mutex_lock( &self->audio_mutex );
 832                 pthread_mutex_lock( &self->video_mutex );
 833         }
 834         mlt_events_block( properties, self->parent );
 835
 836         // Parse URL
 837         AVInputFormat *format = NULL;
 838 #if LIBAVFORMAT_VERSION_INT > ((53<<16)+(6<<8)+0)
 839         AVDictionary *params = NULL;
 840 #else
 841         AVFormatParameters params;
 842         memset( &params, 0, sizeof(params) );
 843 #endif
 844         char *filename = parse_url( profile, URL, &format, &params );
 845
 846         // Now attempt to open the file or device with filename
 847 #if LIBAVFORMAT_VERSION_INT > ((53<<16)+(6<<8)+0)
 848         error = avformat_open_input( &self->video_format, filename, format, &params ) < 0;
 849         if ( error )
 850                 // If the URL is a network stream URL, then we probably need to open with full URL
 851                 error = avformat_open_input( &self->video_format, URL, format, &params ) < 0;
 852 #else
 853         error = av_open_input_file( &self->video_format, filename, format, 0, &params ) < 0;
 854         if ( error )
 855                 // If the URL is a network stream URL, then we probably need to open with full URL
 856                 error = av_open_input_file( &self->video_format, URL, format, 0, &params ) < 0;
 857 #endif
 858
 859         // Set MLT properties onto video AVFormatContext
 860         if ( !error && self->video_format )
 861         {
 862                 apply_properties( self->video_format, properties, AV_OPT_FLAG_DECODING_PARAM );
 863 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(110<<8)+0)
 864                 if ( self->video_format->iformat && self->video_format->iformat->priv_class && self->video_format->priv_data )
 865                         apply_properties( self->video_format->priv_data, properties, AV_OPT_FLAG_DECODING_PARAM );
 866 #endif
 867         }
 868
 869 #if LIBAVFORMAT_VERSION_INT > ((53<<16)+(6<<8)+0)
 870         av_dict_free( &params );
 871 #else
 872         // Cleanup AVFormatParameters
 873         if ( params.standard )
 874                 free( (void*) params.standard );
 875 #endif
 876
 877         // If successful, then try to get additional info
 878         if ( !error && self->video_format )
 879         {
 880                 // Get the stream info
 881 #if LIBAVFORMAT_VERSION_INT > ((53<<16)+(6<<8)+0)
 882                 error = avformat_find_stream_info( self->video_format, NULL ) < 0;
 883 #else
 884                 error = av_find_stream_info( self->video_format ) < 0;
 885 #endif
 886
 887                 // Continue if no error
 888                 if ( !error && self->video_format )
 889                 {
 890                         // Find default audio and video streams
 891                         find_default_streams( self );
 892                         error = get_basic_info( self, profile, filename );
 893
 894                         // Initialize position info
 895                         self->first_pts = -1;
 896                         self->last_position = POSITION_INITIAL;
 897
 898                         if ( !self->audio_format )
 899                         {
 900                                 // We're going to cheat here - for seekable A/V files, we will have separate contexts
 901                                 // to support independent seeking of audio from video.
 902                                 // TODO: Is this really necessary?
 903                                 if ( self->audio_index != -1 && self->video_index != -1 )
 904                                 {
 905                                         if ( self->seekable )
 906                                         {
 907                                                 // And open again for our audio context
 908 #if LIBAVFORMAT_VERSION_INT > ((53<<16)+(6<<8)+0)
 909                                                 avformat_open_input( &self->audio_format, filename, NULL, NULL );
 910                                                 apply_properties( self->audio_format, properties, AV_OPT_FLAG_DECODING_PARAM );
 911                                                 if ( self->audio_format->iformat && self->audio_format->iformat->priv_class && self->audio_format->priv_data )
 912                                                         apply_properties( self->audio_format->priv_data, properties, AV_OPT_FLAG_DECODING_PARAM );
 913                                                 avformat_find_stream_info( self->audio_format, NULL );
 914 #else
 915                                                 av_open_input_file( &self->audio_format, filename, NULL, 0, NULL );
 916                                                 apply_properties( self->audio_format, properties, AV_OPT_FLAG_DECODING_PARAM );
 917 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(110<<8)+0)
 918                         if ( self->audio_format->iformat && self->audio_format->iformat->priv_class && self->audio_format->priv_data )
 919                             apply_properties( self->audio_format->priv_data, properties, AV_OPT_FLAG_DECODING_PARAM );
 920 #endif
 921                                                 av_find_stream_info( self->audio_format );
 922 #endif
 923                                         }
 924                                         else
 925                                         {
 926                                                 self->audio_format = self->video_format;
 927                                         }
 928                                 }
 929                                 else if ( self->audio_index != -1 )
 930                                 {
 931                                         // We only have an audio context
 932                                         self->audio_format = self->video_format;
 933                                         self->video_format = NULL;
 934                                 }
 935                                 else if ( self->video_index == -1 )
 936                                 {
 937                                         // Something has gone wrong
 938                                         error = -1;
 939                                 }
 940                                 if ( self->audio_format && !self->audio_streams )
 941                                         get_audio_streams_info( self );
 942                         }
 943                 }
 944         }
 945         if ( filename )
 946                 free( filename );
 947         if ( !error )
 948         {
 949                 self->apackets = mlt_deque_init();
 950                 self->vpackets = mlt_deque_init();
 951         }
 952
 953         if ( self->dummy_context )
 954         {
 955                 pthread_mutex_lock( &self->open_mutex );
 956 #if LIBAVFORMAT_VERSION_INT >= ((53<<16)+(17<<8)+0)
 957                 avformat_close_input( &self->dummy_context );
 958 #else
 959                 av_close_input_file( self->dummy_context );
 960 #endif
 961                 self->dummy_context = NULL;
 962                 pthread_mutex_unlock( &self->open_mutex );
 963         }
 964
 965         // Unlock the service
 966         if ( take_lock )
 967         {
 968                 pthread_mutex_unlock( &self->audio_mutex );
 969                 pthread_mutex_unlock( &self->video_mutex );
 970         }
 971         mlt_events_unblock( properties, self->parent );
 972
 973         return error;
 974 }
 975
 976 static void reopen_video( producer_avformat self, mlt_producer producer )
 977 {
 978         mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
 979         mlt_service_lock( MLT_PRODUCER_SERVICE( producer ) );
 980         pthread_mutex_lock( &self->audio_mutex );
 981         pthread_mutex_lock( &self->open_mutex );
 982
 983         if ( self->video_codec )
 984                 avcodec_close( self->video_codec );
 985         self->video_codec = NULL;
 986 #if LIBAVFORMAT_VERSION_INT >= ((53<<16)+(17<<8)+0)
 987         if ( self->dummy_context )
 988                 avformat_close_input( &self->dummy_context );
 989         if ( self->video_format )
 990                 avformat_close_input( &self->video_format );
 991 #else
 992         if ( self->dummy_context )
 993                 av_close_input_file( self->dummy_context );
 994         if ( self->video_format )
 995                 av_close_input_file( self->video_format );
 996 #endif
 997         self->dummy_context = NULL;
 998         self->video_format = NULL;
 999         pthread_mutex_unlock( &self->open_mutex );
1000
1001         int audio_index = self->audio_index;
1002         int video_index = self->video_index;
1003
1004         producer_open( self, mlt_service_profile( MLT_PRODUCER_SERVICE(producer) ),
1005                 mlt_properties_get( properties, "resource" ), 0 );
1006
1007         self->audio_index = audio_index;
1008         if ( self->video_format && video_index > -1 )
1009         {
1010                 self->video_index = video_index;
1011                 video_codec_init( self, video_index, properties );
1012         }
1013
1014         pthread_mutex_unlock( &self->audio_mutex );
1015         mlt_service_unlock( MLT_PRODUCER_SERVICE( producer ) );
1016 }
1017
1018 static int seek_video( producer_avformat self, mlt_position position,
1019         int64_t req_position, int must_decode, int use_new_seek, int *ignore )
1020 {
1021         mlt_producer producer = self->parent;
1022         int paused = 0;
1023
1024         if ( self->seekable && ( position != self->video_expected || self->last_position < 0 ) )
1025         {
1026                 mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
1027
1028                 // Fetch the video format context
1029                 AVFormatContext *context = self->video_format;
1030
1031                 // Get the video stream
1032                 AVStream *stream = context->streams[ self->video_index ];
1033
1034                 // Get codec context
1035                 AVCodecContext *codec_context = stream->codec;
1036
1037                 // We may want to use the source fps if available
1038                 double source_fps = mlt_properties_get_double( properties, "meta.media.frame_rate_num" ) /
1039                         mlt_properties_get_double( properties, "meta.media.frame_rate_den" );
1040
1041                 if ( self->av_frame && position + 1 == self->video_expected )
1042                 {
1043                         // We're paused - use last image
1044                         paused = 1;
1045                 }
1046                 else if ( !self->seekable && position > self->video_expected && ( position - self->video_expected ) < 250 )
1047                 {
1048                         // Fast forward - seeking is inefficient for small distances - just ignore following frames
1049                         *ignore = ( int )( ( position - self->video_expected ) / mlt_producer_get_fps( producer ) * source_fps );
1050                         codec_context->skip_loop_filter = AVDISCARD_NONREF;
1051                 }
1052                 else if ( self->seekable && ( position < self->video_expected || position - self->video_expected >= 12 || self->last_position < 0 ) )
1053                 {
1054                         if ( use_new_seek && self->last_position == POSITION_INITIAL )
1055                         {
1056                                 // find first key frame
1057                                 int ret = 0;
1058                                 int toscan = 100;
1059                                 AVPacket pkt;
1060
1061                                 while ( ret >= 0 && toscan-- > 0 )
1062                                 {
1063                                         ret = av_read_frame( context, &pkt );
1064                                         if ( ret >= 0 && ( pkt.flags & PKT_FLAG_KEY ) && pkt.stream_index == self->video_index )
1065                                         {
1066                                                 mlt_log_debug( MLT_PRODUCER_SERVICE(producer), "first_pts %"PRId64" dts %"PRId64" pts_dts_delta %d\n", pkt.pts, pkt.dts, (int)(pkt.pts - pkt.dts) );
1067                                                 self->first_pts = pkt.pts;
1068                                                 toscan = 0;
1069                                         }
1070                                         av_free_packet( &pkt );
1071                                 }
1072                                 // Rewind
1073                                 av_seek_frame( context, -1, 0, AVSEEK_FLAG_BACKWARD );
1074                         }
1075
1076                         // Calculate the timestamp for the requested frame
1077                         int64_t timestamp;
1078                         if ( use_new_seek )
1079                         {
1080                                 timestamp = ( req_position - 0.1 / source_fps ) /
1081                                         ( av_q2d( stream->time_base ) * source_fps );
1082                                 mlt_log_debug( MLT_PRODUCER_SERVICE(producer), "pos %"PRId64" pts %"PRId64"\n", req_position, timestamp );
1083                                 if ( self->first_pts > 0 )
1084                                         timestamp += self->first_pts;
1085                                 else if ( context->start_time != AV_NOPTS_VALUE )
1086                                         timestamp += context->start_time;
1087                         }
1088                         else
1089                         {
1090                                 timestamp = ( int64_t )( ( double )req_position / source_fps * AV_TIME_BASE + 0.5 );
1091                                 if ( context->start_time != AV_NOPTS_VALUE )
1092                                         timestamp += context->start_time;
1093                         }
1094                         if ( must_decode )
1095                                 timestamp -= AV_TIME_BASE;
1096                         if ( timestamp < 0 )
1097                                 timestamp = 0;
1098                         mlt_log_debug( MLT_PRODUCER_SERVICE(producer), "seeking timestamp %"PRId64" position %d expected %d last_pos %"PRId64"\n",
1099                                 timestamp, position, self->video_expected, self->last_position );
1100
1101                         // Seek to the timestamp
1102                         if ( use_new_seek )
1103                         {
1104                                 codec_context->skip_loop_filter = AVDISCARD_NONREF;
1105                                 av_seek_frame( context, self->video_index, timestamp, AVSEEK_FLAG_BACKWARD );
1106                         }
1107                         else if ( req_position > 0 || self->last_position <= 0 )
1108                         {
1109                                 av_seek_frame( context, -1, timestamp, AVSEEK_FLAG_BACKWARD );
1110                         }
1111                         else
1112                         {
1113                                 // Re-open video stream when rewinding to beginning from somewhere else.
1114                                 // This is rather ugly, and I prefer not to do it this way, but ffmpeg is
1115                                 // not reliably seeking to the first frame across formats.
1116                                 reopen_video( self, producer );
1117                         }
1118
1119                         // Remove the cached info relating to the previous position
1120                         self->current_position = POSITION_INVALID;
1121                         self->last_position = POSITION_INVALID;
1122                         av_freep( &self->av_frame );
1123
1124                         if ( use_new_seek )
1125                         {
1126                                 // flush any pictures still in decode buffer
1127                                 avcodec_flush_buffers( codec_context );
1128                         }
1129                 }
1130         }
1131         return paused;
1132 }
1133
1134 /** Convert a frame position to a time code.
1135 */
1136
1137 static double producer_time_of_frame( mlt_producer producer, mlt_position position )
1138 {
1139         return ( double )position / mlt_producer_get_fps( producer );
1140 }
1141
1142 // Collect information about all audio streams
1143
1144 static void get_audio_streams_info( producer_avformat self )
1145 {
1146         // Fetch the audio format context
1147         AVFormatContext *context = self->audio_format;
1148         int i;
1149
1150         for ( i = 0;
1151                   i < context->nb_streams;
1152                   i++ )
1153         {
1154                 if ( context->streams[i]->codec->codec_type == CODEC_TYPE_AUDIO )
1155                 {
1156                         AVCodecContext *codec_context = context->streams[i]->codec;
1157                         AVCodec *codec = avcodec_find_decoder( codec_context->codec_id );
1158
1159                         // If we don't have a codec and we can't initialise it, we can't do much more...
1160                         pthread_mutex_lock( &self->open_mutex );
1161 #if LIBAVCODEC_VERSION_INT >= ((53<<16)+(8<<8)+0)
1162                         if ( codec && avcodec_open2( codec_context, codec, NULL ) >= 0 )
1163 #else
1164                         if ( codec && avcodec_open( codec_context, codec ) >= 0 )
1165 #endif
1166                         {
1167                                 self->audio_streams++;
1168                                 self->audio_max_stream = i;
1169                                 self->total_channels += codec_context->channels;
1170                                 if ( codec_context->channels > self->max_channel )
1171                                         self->max_channel = codec_context->channels;
1172                                 if ( codec_context->sample_rate > self->max_frequency )
1173                                         self->max_frequency = codec_context->sample_rate;
1174                                 avcodec_close( codec_context );
1175                         }
1176                         pthread_mutex_unlock( &self->open_mutex );
1177                 }
1178         }
1179         mlt_log_verbose( NULL, "[producer avformat] audio: total_streams %d max_stream %d total_channels %d max_channels %d\n",
1180                 self->audio_streams, self->audio_max_stream, self->total_channels, self->max_channel );
1181
1182         // Other audio-specific initializations
1183         self->resample_factor = 1.0;
1184 }
1185
1186 static void set_luma_transfer( struct SwsContext *context, int colorspace, int use_full_range )
1187 {
1188 #if defined(SWSCALE) && (LIBSWSCALE_VERSION_INT >= ((0<<16)+(7<<8)+2))
1189         int *coefficients;
1190         const int *new_coefficients;
1191         int full_range;
1192         int brightness, contrast, saturation;
1193
1194         if ( sws_getColorspaceDetails( context, &coefficients, &full_range, &coefficients, &full_range,
1195                         &brightness, &contrast, &saturation ) != -1 )
1196         {
1197                 // Don't change these from defaults unless explicitly told to.
1198                 if ( use_full_range >= 0 )
1199                         full_range = use_full_range;
1200                 switch ( colorspace )
1201                 {
1202                 case 170:
1203                 case 470:
1204                 case 601:
1205                 case 624:
1206                         new_coefficients = sws_getCoefficients( SWS_CS_ITU601 );
1207                         break;
1208                 case 240:
1209                         new_coefficients = sws_getCoefficients( SWS_CS_SMPTE240M );
1210                         break;
1211                 case 709:
1212                         new_coefficients = sws_getCoefficients( SWS_CS_ITU709 );
1213                         break;
1214                 default:
1215                         new_coefficients = coefficients;
1216                         break;
1217                 }
1218                 sws_setColorspaceDetails( context, new_coefficients, full_range, new_coefficients, full_range,
1219                         brightness, contrast, saturation );
1220         }
1221 #endif
1222 }
1223
1224 static mlt_image_format pick_format( enum PixelFormat pix_fmt )
1225 {
1226         switch ( pix_fmt )
1227         {
1228         case PIX_FMT_ARGB:
1229         case PIX_FMT_RGBA:
1230         case PIX_FMT_ABGR:
1231         case PIX_FMT_BGRA:
1232                 return mlt_image_rgb24a;
1233         case PIX_FMT_YUV420P:
1234         case PIX_FMT_YUVJ420P:
1235         case PIX_FMT_YUVA420P:
1236                 return mlt_image_yuv420p;
1237         case PIX_FMT_RGB24:
1238         case PIX_FMT_BGR24:
1239         case PIX_FMT_GRAY8:
1240         case PIX_FMT_MONOWHITE:
1241         case PIX_FMT_MONOBLACK:
1242         case PIX_FMT_RGB8:
1243         case PIX_FMT_BGR8:
1244                 return mlt_image_rgb24;
1245         default:
1246                 return mlt_image_yuv422;
1247         }
1248 }
1249
1250 static void convert_image( AVFrame *frame, uint8_t *buffer, int pix_fmt,
1251         mlt_image_format *format, int width, int height, int colorspace, uint8_t **alpha )
1252 {
1253 #ifdef SWSCALE
1254         int full_range = -1;
1255         int flags = SWS_BICUBIC | SWS_ACCURATE_RND;
1256
1257 #ifdef USE_MMX
1258         flags |= SWS_CPU_CAPS_MMX;
1259 #endif
1260 #ifdef USE_SSE
1261         flags |= SWS_CPU_CAPS_MMX2;
1262 #endif
1263
1264         // extract alpha from planar formats
1265         if ( ( pix_fmt == PIX_FMT_YUVA420P
1266 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(35<<8)+0)
1267                         || pix_fmt == PIX_FMT_YUVA444P
1268 #endif
1269                         ) &&
1270                 *format != mlt_image_rgb24a && *format != mlt_image_opengl &&
1271                 frame->data[3] && frame->linesize[3] )
1272         {
1273                 int i;
1274                 uint8_t *src, *dst;
1275
1276                 dst = *alpha = mlt_pool_alloc( width * height );
1277                 src = frame->data[3];
1278
1279                 for ( i = 0; i < height; dst += width, src += frame->linesize[3], i++ )
1280                         memcpy( dst, src, FFMIN( width, frame->linesize[3] ) );
1281         }
1282
1283         if ( *format == mlt_image_yuv420p )
1284         {
1285                 struct SwsContext *context = sws_getContext( width, height, pix_fmt,
1286                         width, height, PIX_FMT_YUV420P, flags, NULL, NULL, NULL);
1287                 AVPicture output;
1288                 output.data[0] = buffer;
1289                 output.data[1] = buffer + width * height;
1290                 output.data[2] = buffer + ( 5 * width * height ) / 4;
1291                 output.linesize[0] = width;
1292                 output.linesize[1] = width >> 1;
1293                 output.linesize[2] = width >> 1;
1294                 set_luma_transfer( context, colorspace, full_range );
1295                 sws_scale( context, (const uint8_t* const*) frame->data, frame->linesize, 0, height,
1296                         output.data, output.linesize);
1297                 sws_freeContext( context );
1298         }
1299         else if ( *format == mlt_image_rgb24 )
1300         {
1301                 struct SwsContext *context = sws_getContext( width, height, pix_fmt,
1302                         width, height, PIX_FMT_RGB24, flags | SWS_FULL_CHR_H_INT, NULL, NULL, NULL);
1303                 AVPicture output;
1304                 avpicture_fill( &output, buffer, PIX_FMT_RGB24, width, height );
1305                 set_luma_transfer( context, colorspace, full_range );
1306                 sws_scale( context, (const uint8_t* const*) frame->data, frame->linesize, 0, height,
1307                         output.data, output.linesize);
1308                 sws_freeContext( context );
1309         }
1310         else if ( *format == mlt_image_rgb24a || *format == mlt_image_opengl )
1311         {
1312                 struct SwsContext *context = sws_getContext( width, height, pix_fmt,
1313                         width, height, PIX_FMT_RGBA, flags | SWS_FULL_CHR_H_INT, NULL, NULL, NULL);
1314                 AVPicture output;
1315                 avpicture_fill( &output, buffer, PIX_FMT_RGBA, width, height );
1316                 set_luma_transfer( context, colorspace, full_range );
1317                 sws_scale( context, (const uint8_t* const*) frame->data, frame->linesize, 0, height,
1318                         output.data, output.linesize);
1319                 sws_freeContext( context );
1320         }
1321         else
1322         {
1323                 struct SwsContext *context = sws_getContext( width, height, pix_fmt,
1324                         width, height, PIX_FMT_YUYV422, flags | SWS_FULL_CHR_H_INP, NULL, NULL, NULL);
1325                 AVPicture output;
1326                 avpicture_fill( &output, buffer, PIX_FMT_YUYV422, width, height );
1327                 set_luma_transfer( context, colorspace, full_range );
1328                 sws_scale( context, (const uint8_t* const*) frame->data, frame->linesize, 0, height,
1329                         output.data, output.linesize);
1330                 sws_freeContext( context );
1331         }
1332 #else
1333         if ( *format == mlt_image_yuv420p )
1334         {
1335                 AVPicture pict;
1336                 pict.data[0] = buffer;
1337                 pict.data[1] = buffer + width * height;
1338                 pict.data[2] = buffer + ( 5 * width * height ) / 4;
1339                 pict.linesize[0] = width;
1340                 pict.linesize[1] = width >> 1;
1341                 pict.linesize[2] = width >> 1;
1342                 img_convert( &pict, PIX_FMT_YUV420P, (AVPicture *)frame, pix_fmt, width, height );
1343         }
1344         else if ( *format == mlt_image_rgb24 )
1345         {
1346                 AVPicture output;
1347                 avpicture_fill( &output, buffer, PIX_FMT_RGB24, width, height );
1348                 img_convert( &output, PIX_FMT_RGB24, (AVPicture *)frame, pix_fmt, width, height );
1349         }
1350         else if ( format == mlt_image_rgb24a || format == mlt_image_opengl )
1351         {
1352                 AVPicture output;
1353                 avpicture_fill( &output, buffer, PIX_FMT_RGB32, width, height );
1354                 img_convert( &output, PIX_FMT_RGB32, (AVPicture *)frame, pix_fmt, width, height );
1355         }
1356         else
1357         {
1358                 AVPicture output;
1359                 avpicture_fill( &output, buffer, PIX_FMT_YUYV422, width, height );
1360                 img_convert( &output, PIX_FMT_YUYV422, (AVPicture *)frame, pix_fmt, width, height );
1361         }
1362 #endif
1363 }
1364
1365 /** Allocate the image buffer and set it on the frame.
1366 */
1367
1368 static int allocate_buffer( mlt_frame frame, AVCodecContext *codec_context, uint8_t **buffer, mlt_image_format *format, int *width, int *height )
1369 {
1370         int size = 0;
1371
1372         if ( codec_context->width == 0 || codec_context->height == 0 )
1373                 return size;
1374         *width = codec_context->width;
1375         *height = codec_context->height;
1376         size = mlt_image_format_size( *format, *width, *height, NULL );
1377         *buffer = mlt_pool_alloc( size );
1378         if ( *buffer )
1379                 mlt_frame_set_image( frame, *buffer, size, mlt_pool_release );
1380         else
1381                 size = 0;
1382
1383         return size;
1384 }
1385
1386 /** Get an image from a frame.
1387 */
1388
1389 static int producer_get_image( mlt_frame frame, uint8_t **buffer, mlt_image_format *format, int *width, int *height, int writable )
1390 {
1391         // Get the producer
1392         producer_avformat self = mlt_frame_pop_service( frame );
1393         mlt_producer producer = self->parent;
1394
1395         // Get the properties from the frame
1396         mlt_properties frame_properties = MLT_FRAME_PROPERTIES( frame );
1397
1398         // Obtain the frame number of this frame
1399         mlt_position position = mlt_properties_get_position( frame_properties, "avformat_position" );
1400
1401         // Get the producer properties
1402         mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
1403
1404         pthread_mutex_lock( &self->video_mutex );
1405
1406         // Fetch the video format context
1407         AVFormatContext *context = self->video_format;
1408
1409         // Get the video stream
1410         AVStream *stream = context->streams[ self->video_index ];
1411
1412         // Get codec context
1413         AVCodecContext *codec_context = stream->codec;
1414
1415         uint8_t *alpha = NULL;
1416
1417         // Get the image cache
1418         if ( ! self->image_cache && ! mlt_properties_get_int( properties, "noimagecache" ) )
1419         {
1420                 self->image_cache = mlt_cache_init();
1421                 self->alpha_cache = mlt_cache_init();
1422         }
1423         if ( self->image_cache )
1424         {
1425                 mlt_cache_item item = mlt_cache_get( self->image_cache, (void*) position );
1426                 uint8_t *original = mlt_cache_item_data( item, (int*) format );
1427                 if ( original )
1428                 {
1429                         // Set the resolution
1430                         *width = codec_context->width;
1431                         *height = codec_context->height;
1432
1433                         // Workaround 1088 encodings missing cropping info.
1434                         if ( *height == 1088 && mlt_profile_dar( mlt_service_profile( MLT_PRODUCER_SERVICE( producer ) ) ) == 16.0/9.0 )
1435                                 *height = 1080;
1436
1437                         // Cache hit
1438                         int size = mlt_image_format_size( *format, *width, *height, NULL );
1439                         if ( writable )
1440                         {
1441                                 *buffer = mlt_pool_alloc( size );
1442                                 mlt_frame_set_image( frame, *buffer, size, mlt_pool_release );
1443                                 memcpy( *buffer, original, size );
1444                                 mlt_cache_item_close( item );
1445                         }
1446                         else
1447                         {
1448                                 *buffer = original;
1449                                 mlt_properties_set_data( frame_properties, "avformat.image_cache", item, 0, ( mlt_destructor )mlt_cache_item_close, NULL );
1450                                 mlt_frame_set_image( frame, *buffer, size, NULL );
1451                         }
1452                         self->got_picture = 1;
1453
1454                         // check for alpha
1455                         item = mlt_cache_get( self->alpha_cache, (void*) position );
1456                         original = mlt_cache_item_data( item, &size );
1457                         if ( original )
1458                         {
1459                                 alpha = mlt_pool_alloc( size );
1460                                 memcpy( alpha, original, size );
1461                                 mlt_cache_item_close( item );
1462                         }
1463
1464                         goto exit_get_image;
1465                 }
1466         }
1467         // Cache miss
1468         int image_size = 0;
1469
1470         // Packet
1471         AVPacket pkt;
1472
1473         // Special case ffwd handling
1474         int ignore = 0;
1475
1476         // We may want to use the source fps if available
1477         double source_fps = mlt_properties_get_double( properties, "meta.media.frame_rate_num" ) /
1478                 mlt_properties_get_double( properties, "meta.media.frame_rate_den" );
1479
1480         // This is the physical frame position in the source
1481         int64_t req_position = ( int64_t )( position / mlt_producer_get_fps( producer ) * source_fps + 0.5 );
1482
1483         // Determines if we have to decode all frames in a sequence
1484         // Temporary hack to improve intra frame only
1485         int must_decode = !( codec_context->codec && codec_context->codec->name ) || (
1486                                   strcmp( codec_context->codec->name, "dnxhd" ) &&
1487                                   strcmp( codec_context->codec->name, "dvvideo" ) &&
1488                                   strcmp( codec_context->codec->name, "huffyuv" ) &&
1489                                   strcmp( codec_context->codec->name, "mjpeg" ) &&
1490                                   strcmp( codec_context->codec->name, "rawvideo" ) );
1491
1492         // Turn on usage of new seek API and PTS for seeking
1493         int use_new_seek = self->seekable &&
1494                 codec_context->codec_id == CODEC_ID_H264 && !strcmp( context->iformat->name, "mpegts" );
1495         if ( mlt_properties_get( properties, "new_seek" ) )
1496                 use_new_seek = mlt_properties_get_int( properties, "new_seek" );
1497         double delay = mlt_properties_get_double( properties, "video_delay" );
1498
1499         // Seek if necessary
1500         int paused = seek_video( self, position, req_position, must_decode, use_new_seek, &ignore );
1501
1502         // Seek might have reopened the file
1503         context = self->video_format;
1504         stream = context->streams[ self->video_index ];
1505         codec_context = stream->codec;
1506         if ( *format == mlt_image_none ||
1507                         codec_context->pix_fmt == PIX_FMT_ARGB ||
1508                         codec_context->pix_fmt == PIX_FMT_RGBA ||
1509                         codec_context->pix_fmt == PIX_FMT_ABGR ||
1510                         codec_context->pix_fmt == PIX_FMT_BGRA )
1511                 *format = pick_format( codec_context->pix_fmt );
1512
1513         // Duplicate the last image if necessary
1514         if ( self->av_frame && self->av_frame->linesize[0] && self->got_picture
1515                  && ( paused
1516                           || self->current_position == req_position
1517                           || ( !use_new_seek && self->current_position > req_position ) ) )
1518         {
1519                 // Duplicate it
1520                 if ( ( image_size = allocate_buffer( frame, codec_context, buffer, format, width, height ) ) )
1521                 {
1522                         // Workaround 1088 encodings missing cropping info.
1523                         if ( *height == 1088 && mlt_profile_dar( mlt_service_profile( MLT_PRODUCER_SERVICE( producer ) ) ) == 16.0/9.0 )
1524                                 *height = 1080;
1525 #ifdef VDPAU
1526                         if ( self->vdpau && self->vdpau->buffer )
1527                         {
1528                                 AVPicture picture;
1529                                 picture.data[0] = self->vdpau->buffer;
1530                                 picture.data[2] = self->vdpau->buffer + codec_context->width * codec_context->height;
1531                                 picture.data[1] = self->vdpau->buffer + codec_context->width * codec_context->height * 5 / 4;
1532                                 picture.linesize[0] = codec_context->width;
1533                                 picture.linesize[1] = codec_context->width / 2;
1534                                 picture.linesize[2] = codec_context->width / 2;
1535                                 convert_image( (AVFrame*) &picture, *buffer,
1536                                         PIX_FMT_YUV420P, format, *width, *height, self->colorspace, &alpha );
1537                         }
1538                         else
1539 #endif
1540                         convert_image( self->av_frame, *buffer, codec_context->pix_fmt,
1541                                 format, *width, *height, self->colorspace, &alpha );
1542                 }
1543                 else
1544                         mlt_frame_get_image( frame, buffer, format, width, height, writable );
1545         }
1546         else
1547         {
1548                 int ret = 0;
1549                 int64_t int_position = 0;
1550                 int decode_errors = 0;
1551                 int got_picture = 0;
1552
1553                 av_init_packet( &pkt );
1554
1555                 // Construct an AVFrame for YUV422 conversion
1556                 if ( !self->av_frame )
1557                         self->av_frame = avcodec_alloc_frame( );
1558
1559                 while( ret >= 0 && !got_picture )
1560                 {
1561                         // Read a packet
1562                         pthread_mutex_lock( &self->packets_mutex );
1563                         if ( mlt_deque_count( self->vpackets ) )
1564                         {
1565                                 AVPacket *tmp = (AVPacket*) mlt_deque_pop_front( self->vpackets );
1566                                 pkt = *tmp;
1567                                 free( tmp );
1568                         }
1569                         else
1570                         {
1571                                 ret = av_read_frame( context, &pkt );
1572                                 if ( ret >= 0 && !self->seekable && pkt.stream_index == self->audio_index )
1573                                 {
1574                                         if ( !av_dup_packet( &pkt ) )
1575                                         {
1576                                                 AVPacket *tmp = malloc( sizeof(AVPacket) );
1577                                                 *tmp = pkt;
1578                                                 mlt_deque_push_back( self->apackets, tmp );
1579                                         }
1580                                 }
1581                         }
1582                         pthread_mutex_unlock( &self->packets_mutex );
1583
1584                         // We only deal with video from the selected video_index
1585                         if ( ret >= 0 && pkt.stream_index == self->video_index && pkt.size > 0 )
1586                         {
1587                                 // Determine time code of the packet
1588                                 if ( use_new_seek )
1589                                 {
1590                                         int64_t pts = pkt.pts;
1591                                         if ( self->first_pts > 0 )
1592                                                 pts -= self->first_pts;
1593                                         else if ( context->start_time != AV_NOPTS_VALUE )
1594                                                 pts -= context->start_time;
1595                                         int_position = ( int64_t )( ( av_q2d( stream->time_base ) * pts + delay ) * source_fps + 0.1 );
1596                                         if ( pkt.pts == AV_NOPTS_VALUE )
1597                                         {
1598                                                 self->invalid_pts_counter++;
1599                                                 if ( self->invalid_pts_counter > 20 )
1600                                                 {
1601                                                         mlt_log_panic( MLT_PRODUCER_SERVICE(producer), "\ainvalid PTS; DISABLING NEW_SEEK!\n" );
1602                                                         mlt_properties_set_int( properties, "new_seek", 0 );
1603                                                         int_position = req_position;
1604                                                         use_new_seek = 0;
1605                                                 }
1606                                         }
1607                                         else
1608                                         {
1609                                                 self->invalid_pts_counter = 0;
1610                                         }
1611                                         mlt_log_debug( MLT_PRODUCER_SERVICE(producer), "pkt.pts %"PRId64" req_pos %"PRId64" cur_pos %"PRId64" pkt_pos %"PRId64"\n",
1612                                                 pkt.pts, req_position, self->current_position, int_position );
1613                                 }
1614                                 else
1615                                 {
1616                                         if ( pkt.dts != AV_NOPTS_VALUE )
1617                                         {
1618                                                 int_position = ( int64_t )( ( av_q2d( stream->time_base ) * pkt.dts + delay ) * source_fps + 0.5 );
1619                                                 if ( context->start_time != AV_NOPTS_VALUE )
1620                                                         int_position -= ( int64_t )( context->start_time * source_fps / AV_TIME_BASE + 0.5 );
1621                                                 if ( int_position == self->last_position )
1622                                                         int_position = self->last_position + 1;
1623                                         }
1624                                         mlt_log_debug( MLT_PRODUCER_SERVICE(producer), "pkt.dts %"PRId64" req_pos %"PRId64" cur_pos %"PRId64" pkt_pos %"PRId64"\n",
1625                                                 pkt.dts, req_position, self->current_position, int_position );
1626                                         // Make a dumb assumption on streams that contain wild timestamps
1627                                         if ( abs( req_position - int_position ) > 999 )
1628                                         {
1629                                                 int_position = req_position;
1630                                                 mlt_log_debug( MLT_PRODUCER_SERVICE(producer), " WILD TIMESTAMP!" );
1631                                         }
1632                                 }
1633                                 self->last_position = int_position;
1634
1635                                 // Decode the image
1636                                 if ( must_decode || int_position >= req_position )
1637                                 {
1638 #ifdef VDPAU
1639                                         if ( self->vdpau )
1640                                         {
1641                                                 if ( self->vdpau->decoder == VDP_INVALID_HANDLE )
1642                                                 {
1643                                                         vdpau_decoder_init( self );
1644                                                 }
1645                                                 self->vdpau->is_decoded = 0;
1646                                         }
1647 #endif
1648                                         codec_context->reordered_opaque = pkt.pts;
1649                                         if ( int_position >= req_position )
1650                                                 codec_context->skip_loop_filter = AVDISCARD_NONE;
1651 #if (LIBAVCODEC_VERSION_INT >= ((52<<16)+(26<<8)+0))
1652                                         ret = avcodec_decode_video2( codec_context, self->av_frame, &got_picture, &pkt );
1653 #else
1654                                         ret = avcodec_decode_video( codec_context, self->av_frame, &got_picture, pkt.data, pkt.size );
1655 #endif
1656                                         // Note: decode may fail at the beginning of MPEGfile (B-frames referencing before first I-frame), so allow a few errors.
1657                                         if ( ret < 0 )
1658                                         {
1659                                                 if ( ++decode_errors <= 10 )
1660                                                         ret = 0;
1661                                         }
1662                                         else
1663                                         {
1664                                                 decode_errors = 0;
1665                                         }
1666                                 }
1667
1668                                 if ( got_picture )
1669                                 {
1670                                         if ( use_new_seek )
1671                                         {
1672                                                 // Determine time code of the packet
1673                                                 int64_t pts = self->av_frame->reordered_opaque;
1674                                                 if ( self->first_pts > 0 )
1675                                                         pts -= self->first_pts;
1676                                                 else if ( context->start_time != AV_NOPTS_VALUE )
1677                                                         pts -= context->start_time;
1678                                                 int_position = ( int64_t )( av_q2d( stream->time_base) * pts * source_fps + 0.1 );
1679                                                 mlt_log_debug( MLT_PRODUCER_SERVICE(producer), "got frame %"PRId64", key %d\n", int_position, self->av_frame->key_frame );
1680                                         }
1681                                         // Handle ignore
1682                                         if ( int_position < req_position )
1683                                         {
1684                                                 ignore = 0;
1685                                                 got_picture = 0;
1686                                         }
1687                                         else if ( int_position >= req_position )
1688                                         {
1689                                                 ignore = 0;
1690                                                 codec_context->skip_loop_filter = AVDISCARD_NONE;
1691                                         }
1692                                         else if ( ignore -- )
1693                                         {
1694                                                 got_picture = 0;
1695                                         }
1696                                 }
1697                                 mlt_log_debug( MLT_PRODUCER_SERVICE(producer), " got_pic %d key %d\n", got_picture, pkt.flags & PKT_FLAG_KEY );
1698                         }
1699
1700                         // Now handle the picture if we have one
1701                         if ( got_picture )
1702                         {
1703                                 if ( ( image_size = allocate_buffer( frame, codec_context, buffer, format, width, height ) ) )
1704                                 {
1705                                         // Workaround 1088 encodings missing cropping info.
1706                                         if ( *height == 1088 && mlt_profile_dar( mlt_service_profile( MLT_PRODUCER_SERVICE( producer ) ) ) == 16.0/9.0 )
1707                                                 *height = 1080;
1708 #ifdef VDPAU
1709                                         if ( self->vdpau )
1710                                         {
1711                                                 if ( self->vdpau->is_decoded )
1712                                                 {
1713                                                         struct vdpau_render_state *render = (struct vdpau_render_state*) self->av_frame->data[0];
1714                                                         void *planes[3];
1715                                                         uint32_t pitches[3];
1716                                                         VdpYCbCrFormat dest_format = VDP_YCBCR_FORMAT_YV12;
1717
1718                                                         if ( !self->vdpau->buffer )
1719                                                                 self->vdpau->buffer = mlt_pool_alloc( codec_context->width * codec_context->height * 3 / 2 );
1720                                                         self->av_frame->data[0] = planes[0] = self->vdpau->buffer;
1721                                                         self->av_frame->data[2] = planes[1] = self->vdpau->buffer + codec_context->width * codec_context->height;
1722                                                         self->av_frame->data[1] = planes[2] = self->vdpau->buffer + codec_context->width * codec_context->height * 5 / 4;
1723                                                         self->av_frame->linesize[0] = pitches[0] = codec_context->width;
1724                                                         self->av_frame->linesize[1] = pitches[1] = codec_context->width / 2;
1725                                                         self->av_frame->linesize[2] = pitches[2] = codec_context->width / 2;
1726
1727                                                         VdpStatus status = vdp_surface_get_bits( render->surface, dest_format, planes, pitches );
1728                                                         if ( status == VDP_STATUS_OK )
1729                                                         {
1730                                                                 convert_image( self->av_frame, *buffer, PIX_FMT_YUV420P,
1731                                                                         format, *width, *height, self->colorspace, &alpha );
1732                                                         }
1733                                                         else
1734                                                         {
1735                                                                 mlt_log_error( MLT_PRODUCER_SERVICE(producer), "VDPAU Error: %s\n", vdp_get_error_string( status ) );
1736                                                                 image_size = self->vdpau->is_decoded = 0;
1737                                                         }
1738                                                 }
1739                                                 else
1740                                                 {
1741                                                         mlt_log_error( MLT_PRODUCER_SERVICE(producer), "VDPAU error in VdpDecoderRender\n" );
1742                                                         image_size = got_picture = 0;
1743                                                 }
1744                                         }
1745                                         else
1746 #endif
1747                                         convert_image( self->av_frame, *buffer, codec_context->pix_fmt,
1748                                                 format, *width, *height, self->colorspace, &alpha );
1749                                         self->top_field_first |= self->av_frame->top_field_first;
1750                                         self->current_position = int_position;
1751                                         self->got_picture = 1;
1752                                 }
1753                                 else
1754                                 {
1755                                         got_picture = 0;
1756                                 }
1757                         }
1758                         if ( self->seekable || pkt.stream_index != self->audio_index )
1759                                 av_free_packet( &pkt );
1760                 }
1761         }
1762
1763         if ( self->got_picture && image_size > 0 && self->image_cache )
1764         {
1765                 // Copy buffer to image cache
1766                 uint8_t *image = mlt_pool_alloc( image_size );
1767                 memcpy( image, *buffer, image_size );
1768                 mlt_cache_put( self->image_cache, (void*) position, image, *format, mlt_pool_release );
1769                 if ( alpha )
1770                 {
1771                         int alpha_size = (*width) * (*height);
1772                         image = mlt_pool_alloc( alpha_size );
1773                         memcpy( image, alpha, alpha_size );
1774                         mlt_cache_put( self->alpha_cache, (void*) position, image, alpha_size, mlt_pool_release );
1775                 }
1776         }
1777         // Try to duplicate last image if there was a decoding failure
1778         else if ( !image_size && self->av_frame && self->av_frame->linesize[0] )
1779         {
1780                 // Duplicate it
1781                 if ( ( image_size = allocate_buffer( frame, codec_context, buffer, format, width, height ) ) )
1782                 {
1783                         // Workaround 1088 encodings missing cropping info.
1784                         if ( *height == 1088 && mlt_profile_dar( mlt_service_profile( MLT_PRODUCER_SERVICE( producer ) ) ) == 16.0/9.0 )
1785                                 *height = 1080;
1786 #ifdef VDPAU
1787                         if ( self->vdpau && self->vdpau->buffer )
1788                         {
1789                                 AVPicture picture;
1790                                 picture.data[0] = self->vdpau->buffer;
1791                                 picture.data[2] = self->vdpau->buffer + codec_context->width * codec_context->height;
1792                                 picture.data[1] = self->vdpau->buffer + codec_context->width * codec_context->height * 5 / 4;
1793                                 picture.linesize[0] = codec_context->width;
1794                                 picture.linesize[1] = codec_context->width / 2;
1795                                 picture.linesize[2] = codec_context->width / 2;
1796                                 convert_image( (AVFrame*) &picture, *buffer,
1797                                         PIX_FMT_YUV420P, format, *width, *height, self->colorspace, &alpha );
1798                         }
1799                         else
1800 #endif
1801                         convert_image( self->av_frame, *buffer, codec_context->pix_fmt,
1802                                 format, *width, *height, self->colorspace, &alpha );
1803                         self->got_picture = 1;
1804                 }
1805                 else
1806                         mlt_frame_get_image( frame, buffer, format, width, height, writable );
1807         }
1808
1809         // Regardless of speed, we expect to get the next frame (cos we ain't too bright)
1810         self->video_expected = position + 1;
1811
1812 exit_get_image:
1813
1814         pthread_mutex_unlock( &self->video_mutex );
1815
1816         // Set the progressive flag
1817         if ( mlt_properties_get( properties, "force_progressive" ) )
1818                 mlt_properties_set_int( frame_properties, "progressive", !!mlt_properties_get_int( properties, "force_progressive" ) );
1819         else if ( self->av_frame )
1820                 mlt_properties_set_int( frame_properties, "progressive", !self->av_frame->interlaced_frame );
1821
1822         // Set the field order property for this frame
1823         if ( mlt_properties_get( properties, "force_tff" ) )
1824                 mlt_properties_set_int( frame_properties, "top_field_first", !!mlt_properties_get_int( properties, "force_tff" ) );
1825         else
1826                 mlt_properties_set_int( frame_properties, "top_field_first", self->top_field_first );
1827
1828         // Set immutable properties of the selected track's (or overridden) source attributes.
1829         mlt_service_lock( MLT_PRODUCER_SERVICE( producer ) );
1830         mlt_properties_set_int( properties, "meta.media.top_field_first", self->top_field_first );
1831         mlt_properties_set_int( properties, "meta.media.progressive", mlt_properties_get_int( frame_properties, "progressive" ) );
1832         mlt_service_unlock( MLT_PRODUCER_SERVICE( producer ) );
1833
1834         // set alpha
1835         if ( alpha )
1836                 mlt_frame_set_alpha( frame, alpha, (*width) * (*height), mlt_pool_release );
1837
1838         return !self->got_picture;
1839 }
1840
1841 /** Process properties as AVOptions and apply to AV context obj
1842 */
1843
1844 static void apply_properties( void *obj, mlt_properties properties, int flags )
1845 {
1846         int i;
1847         int count = mlt_properties_count( properties );
1848         for ( i = 0; i < count; i++ )
1849         {
1850                 const char *opt_name = mlt_properties_get_name( properties, i );
1851 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(10<<8)+0)
1852                 const AVOption *opt = av_opt_find( obj, opt_name, NULL, flags, flags );
1853 #else
1854                 const AVOption *opt = av_find_opt( obj, opt_name, NULL, flags, flags );
1855 #endif
1856                 if ( opt_name && mlt_properties_get( properties, opt_name ) )
1857                 {
1858                         if ( opt )
1859 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(12<<8)+0)
1860                                 av_opt_set( obj, opt_name, mlt_properties_get( properties, opt_name), 0 );
1861 #elif LIBAVCODEC_VERSION_INT >= ((52<<16)+(7<<8)+0)
1862                                 av_set_string3( obj, opt_name, mlt_properties_get( properties, opt_name), 0, NULL );
1863 #elif LIBAVCODEC_VERSION_INT >= ((51<<16)+(59<<8)+0)
1864                                 av_set_string2( obj, opt_name, mlt_properties_get( properties, opt_name), 0 );
1865 #else
1866                                 av_set_string( obj, opt_name, mlt_properties_get( properties, opt_name) );
1867 #endif
1868                 }
1869         }
1870 }
1871
1872 /** Initialize the video codec context.
1873  */
1874
1875 static int video_codec_init( producer_avformat self, int index, mlt_properties properties )
1876 {
1877         // Initialise the codec if necessary
1878         if ( !self->video_codec )
1879         {
1880                 // Get the video stream
1881                 AVStream *stream = self->video_format->streams[ index ];
1882
1883                 // Get codec context
1884                 AVCodecContext *codec_context = stream->codec;
1885
1886                 // Find the codec
1887                 AVCodec *codec = avcodec_find_decoder( codec_context->codec_id );
1888 #ifdef VDPAU
1889                 if ( codec_context->codec_id == CODEC_ID_H264 )
1890                 {
1891                         if ( ( codec = avcodec_find_decoder_by_name( "h264_vdpau" ) ) )
1892                         {
1893                                 if ( vdpau_init( self ) )
1894                                 {
1895                                         self->video_codec = codec_context;
1896                                         if ( !vdpau_decoder_init( self ) )
1897                                                 vdpau_fini( self );
1898                                 }
1899                         }
1900                         if ( !self->vdpau )
1901                                 codec = avcodec_find_decoder( codec_context->codec_id );
1902                 }
1903 #endif
1904
1905                 // Initialise multi-threading
1906                 int thread_count = mlt_properties_get_int( properties, "threads" );
1907                 if ( thread_count == 0 && getenv( "MLT_AVFORMAT_THREADS" ) )
1908                         thread_count = atoi( getenv( "MLT_AVFORMAT_THREADS" ) );
1909                 if ( thread_count > 1 )
1910                         codec_context->thread_count = thread_count;
1911
1912                 // If we don't have a codec and we can't initialise it, we can't do much more...
1913                 pthread_mutex_lock( &self->open_mutex );
1914 #if LIBAVCODEC_VERSION_INT >= ((53<<16)+(8<<8)+0)
1915                 if ( codec && avcodec_open2( codec_context, codec, NULL ) >= 0 )
1916 #else
1917                 if ( codec && avcodec_open( codec_context, codec ) >= 0 )
1918 #endif
1919                 {
1920                         // Now store the codec with its destructor
1921                         self->video_codec = codec_context;
1922                 }
1923                 else
1924                 {
1925                         // Remember that we can't use this later
1926                         self->video_index = -1;
1927                         pthread_mutex_unlock( &self->open_mutex );
1928                         return 0;
1929                 }
1930                 pthread_mutex_unlock( &self->open_mutex );
1931
1932                 // Process properties as AVOptions
1933                 apply_properties( codec_context, properties, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM );
1934 #if LIBAVCODEC_VERSION_INT >= ((52<<16)+(122<<8)+0)
1935                 if ( codec->priv_class && codec_context->priv_data )
1936                         apply_properties( codec_context->priv_data, properties, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM );
1937 #endif
1938
1939                 // Reset some image properties
1940                 mlt_properties_set_int( properties, "width", self->video_codec->width );
1941                 mlt_properties_set_int( properties, "height", self->video_codec->height );
1942                 // For DV, we'll just use the saved aspect ratio
1943                 if ( codec_context->codec_id != CODEC_ID_DVVIDEO )
1944                         get_aspect_ratio( properties, stream, self->video_codec, NULL );
1945
1946                 // Determine the fps first from the codec
1947                 double source_fps = (double) self->video_codec->time_base.den /
1948                                                                    ( self->video_codec->time_base.num == 0 ? 1 : self->video_codec->time_base.num );
1949
1950                 if ( mlt_properties_get( properties, "force_fps" ) )
1951                 {
1952                         source_fps = mlt_properties_get_double( properties, "force_fps" );
1953                         stream->time_base = av_d2q( source_fps, 1024 );
1954                         mlt_properties_set_int( properties, "meta.media.frame_rate_num", stream->time_base.num );
1955                         mlt_properties_set_int( properties, "meta.media.frame_rate_den", stream->time_base.den );
1956                 }
1957                 else
1958                 {
1959                         // If the muxer reports a frame rate different than the codec
1960 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(42<<8)+0)
1961                         double muxer_fps = av_q2d( stream->avg_frame_rate );
1962                         if ( isnan( muxer_fps ) || muxer_fps == 0 )
1963                                 muxer_fps = av_q2d( stream->r_frame_rate );
1964 #else
1965                         double muxer_fps = av_q2d( stream->r_frame_rate );
1966 #endif
1967                         // Choose the lesser - the wrong tends to be off by some multiple of 10
1968                         source_fps = FFMIN( source_fps, muxer_fps );
1969                         if ( source_fps >= 1.0 && ( source_fps < muxer_fps || isnan( muxer_fps ) ) )
1970                         {
1971                                 mlt_properties_set_int( properties, "meta.media.frame_rate_num", self->video_codec->time_base.den );
1972                                 mlt_properties_set_int( properties, "meta.media.frame_rate_den", self->video_codec->time_base.num == 0 ? 1 : self->video_codec->time_base.num );
1973                         }
1974                         else if ( muxer_fps > 0 )
1975                         {
1976                                 AVRational frame_rate = stream->r_frame_rate;
1977                                 // With my samples when r_frame_rate != 1000 but avg_frame_rate is valid,
1978                                 // avg_frame_rate gives some approximate value that does not well match the media.
1979                                 // Also, on my sample where r_frame_rate = 1000, using avg_frame_rate directly
1980                                 // results in some very choppy output, but some value slightly different works
1981                                 // great.
1982 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(42<<8)+0)
1983                                 if ( av_q2d( stream->r_frame_rate ) >= 1000 && av_q2d( stream->avg_frame_rate ) > 0 )
1984                                         frame_rate = av_d2q( av_q2d( stream->avg_frame_rate ), 1024 );
1985 #endif
1986                                 mlt_properties_set_int( properties, "meta.media.frame_rate_num", frame_rate.num );
1987                                 mlt_properties_set_int( properties, "meta.media.frame_rate_den", frame_rate.den );
1988                                 source_fps = av_q2d( frame_rate );
1989                         }
1990                         else
1991                         {
1992                                 source_fps = mlt_producer_get_fps( self->parent );
1993                                 AVRational frame_rate = av_d2q( source_fps, 255 );
1994                                 mlt_properties_set_int( properties, "meta.media.frame_rate_num", frame_rate.num );
1995                                 mlt_properties_set_int( properties, "meta.media.frame_rate_den", frame_rate.den );
1996                         }
1997                 }
1998
1999                 // source_fps is deprecated in favor of meta.media.frame_rate_num and .frame_rate_den
2000                 if ( source_fps > 0 )
2001                         mlt_properties_set_double( properties, "source_fps", source_fps );
2002                 else
2003                         mlt_properties_set_double( properties, "source_fps", mlt_producer_get_fps( self->parent ) );
2004
2005                 // Set the YUV colorspace from override or detect
2006                 self->colorspace = mlt_properties_get_int( properties, "force_colorspace" );
2007 #if LIBAVCODEC_VERSION_INT > ((52<<16)+(28<<8)+0)
2008                 if ( ! self->colorspace )
2009                 {
2010                         switch ( self->video_codec->colorspace )
2011                         {
2012                         case AVCOL_SPC_SMPTE240M:
2013                                 self->colorspace = 240;
2014                                 break;
2015                         case AVCOL_SPC_BT470BG:
2016                         case AVCOL_SPC_SMPTE170M:
2017                                 self->colorspace = 601;
2018                                 break;
2019                         case AVCOL_SPC_BT709:
2020                                 self->colorspace = 709;
2021                                 break;
2022                         default:
2023                                 // This is a heuristic Charles Poynton suggests in "Digital Video and HDTV"
2024                                 self->colorspace = self->video_codec->width * self->video_codec->height > 750000 ? 709 : 601;
2025                                 break;
2026                         }
2027                 }
2028 #endif
2029                 // Let apps get chosen colorspace
2030                 mlt_properties_set_int( properties, "meta.media.colorspace", self->colorspace );
2031         }
2032         return self->video_codec && self->video_index > -1;
2033 }
2034
2035 /** Set up video handling.
2036 */
2037
2038 static void producer_set_up_video( producer_avformat self, mlt_frame frame )
2039 {
2040         // Get the producer
2041         mlt_producer producer = self->parent;
2042
2043         // Get the properties
2044         mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
2045
2046         // Fetch the video format context
2047         AVFormatContext *context = self->video_format;
2048
2049         // Get the video_index
2050         int index = mlt_properties_get_int( properties, "video_index" );
2051
2052         // Reopen the file if necessary
2053         if ( !context && index > -1 )
2054         {
2055                 producer_open( self, mlt_service_profile( MLT_PRODUCER_SERVICE(producer) ),
2056                         mlt_properties_get( properties, "resource" ), 1 );
2057                 context = self->video_format;
2058         }
2059
2060         // Exception handling for video_index
2061         if ( context && index >= (int) context->nb_streams )
2062         {
2063                 // Get the last video stream
2064                 for ( index = context->nb_streams - 1;
2065                           index >= 0 && context->streams[ index ]->codec->codec_type != CODEC_TYPE_VIDEO;
2066                           index-- );
2067                 mlt_properties_set_int( properties, "video_index", index );
2068         }
2069         if ( context && index > -1 && context->streams[ index ]->codec->codec_type != CODEC_TYPE_VIDEO )
2070         {
2071                 // Invalidate the video stream
2072                 index = -1;
2073                 mlt_properties_set_int( properties, "video_index", index );
2074         }
2075
2076         // Update the video properties if the index changed
2077         if ( index != self->video_index )
2078         {
2079                 // Reset the video properties if the index changed
2080                 self->video_index = index;
2081                 pthread_mutex_lock( &self->open_mutex );
2082                 if ( self->video_codec )
2083                         avcodec_close( self->video_codec );
2084                 self->video_codec = NULL;
2085                 pthread_mutex_unlock( &self->open_mutex );
2086         }
2087
2088         // Get the frame properties
2089         mlt_properties frame_properties = MLT_FRAME_PROPERTIES( frame );
2090
2091         // Get the codec
2092         if ( context && index > -1 && video_codec_init( self, index, properties ) )
2093         {
2094                 // Set the frame properties
2095                 double force_aspect_ratio = mlt_properties_get_double( properties, "force_aspect_ratio" );
2096                 double aspect_ratio = ( force_aspect_ratio > 0.0 ) ?
2097                         force_aspect_ratio : mlt_properties_get_double( properties, "aspect_ratio" );
2098
2099                 // Set the width and height
2100                 mlt_properties_set_int( frame_properties, "width", self->video_codec->width );
2101                 mlt_properties_set_int( frame_properties, "height", self->video_codec->height );
2102                 // real_width and real_height are deprecated in favor of meta.media.width and .height
2103                 mlt_properties_set_int( properties, "meta.media.width", self->video_codec->width );
2104                 mlt_properties_set_int( properties, "meta.media.height", self->video_codec->height );
2105                 mlt_properties_set_int( frame_properties, "real_width", self->video_codec->width );
2106                 mlt_properties_set_int( frame_properties, "real_height", self->video_codec->height );
2107                 mlt_properties_set_double( frame_properties, "aspect_ratio", aspect_ratio );
2108                 mlt_properties_set_int( frame_properties, "colorspace", self->colorspace );
2109
2110                 // Workaround 1088 encodings missing cropping info.
2111                 if ( self->video_codec->height == 1088 && mlt_profile_dar( mlt_service_profile( MLT_PRODUCER_SERVICE( producer ) ) ) == 16.0/9.0 )
2112                 {
2113                         mlt_properties_set_int( properties, "meta.media.height", 1080 );
2114                         mlt_properties_set_int( frame_properties, "real_height", 1080 );
2115                 }
2116
2117                 // Add our image operation
2118                 mlt_frame_push_service( frame, self );
2119                 mlt_frame_push_get_image( frame, producer_get_image );
2120         }
2121         else
2122         {
2123                 // If something failed, use test card image
2124                 mlt_properties_set_int( frame_properties, "test_image", 1 );
2125         }
2126 }
2127
2128 static int seek_audio( producer_avformat self, mlt_position position, double timecode, int *ignore )
2129 {
2130         int paused = 0;
2131
2132         // Seek if necessary
2133         if ( self->seekable && position != self->audio_expected )
2134         {
2135                 if ( position + 1 == self->audio_expected )
2136                 {
2137                         // We're paused - silence required
2138                         paused = 1;
2139                 }
2140                 else if ( !self->seekable && position > self->audio_expected && ( position - self->audio_expected ) < 250 )
2141                 {
2142                         // Fast forward - seeking is inefficient for small distances - just ignore following frames
2143                         *ignore = position - self->audio_expected;
2144                 }
2145                 else if ( position < self->audio_expected || position - self->audio_expected >= 12 )
2146                 {
2147                         AVFormatContext *context = self->audio_format;
2148                         int64_t timestamp = ( int64_t )( timecode * AV_TIME_BASE + 0.5 );
2149                         if ( context->start_time != AV_NOPTS_VALUE )
2150                                 timestamp += context->start_time;
2151                         if ( timestamp < 0 )
2152                                 timestamp = 0;
2153
2154                         // Set to the real timecode
2155                         if ( av_seek_frame( context, -1, timestamp, AVSEEK_FLAG_BACKWARD ) != 0 )
2156                                 paused = 1;
2157
2158                         // Clear the usage in the audio buffer
2159                         int i = MAX_AUDIO_STREAMS + 1;
2160                         while ( --i )
2161                                 self->audio_used[i - 1] = 0;
2162                 }
2163         }
2164         return paused;
2165 }
2166
2167 static int sample_bytes( AVCodecContext *context )
2168 {
2169 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(8<<8)+0)
2170         return av_get_bytes_per_sample( context->sample_fmt );
2171 #elif LIBAVCODEC_VERSION_MAJOR >= 53
2172         return av_get_bits_per_sample_fmt( context->sample_fmt ) / 8;
2173 #else
2174         return av_get_bits_per_sample_format( context->sample_fmt ) / 8;
2175 #endif
2176 }
2177
2178 static int decode_audio( producer_avformat self, int *ignore, AVPacket pkt, int channels, int samples, double timecode, double fps )
2179 {
2180         // Fetch the audio_format
2181         AVFormatContext *context = self->audio_format;
2182
2183         // Get the current stream index
2184         int index = pkt.stream_index;
2185
2186         // Get codec context
2187         AVCodecContext *codec_context = self->audio_codec[ index ];
2188
2189         // Obtain the resample context if it exists (not always needed)
2190         ReSampleContext *resample = self->audio_resample[ index ];
2191
2192         // Obtain the audio buffers
2193         uint8_t *audio_buffer = self->audio_buffer[ index ];
2194         uint8_t *decode_buffer = self->decode_buffer[ index ];
2195
2196         int audio_used = self->audio_used[ index ];
2197         uint8_t *ptr = pkt.data;
2198         int len = pkt.size;
2199         int ret = 0;
2200
2201         while ( ptr && ret >= 0 && len > 0 )
2202         {
2203                 int sizeof_sample = resample? sizeof( int16_t ) : sample_bytes( codec_context );
2204                 int data_size = self->audio_buffer_size[ index ];
2205
2206                 // Decode the audio
2207 #if (LIBAVCODEC_VERSION_INT >= ((52<<16)+(26<<8)+0))
2208                 ret = avcodec_decode_audio3( codec_context, (int16_t*) decode_buffer, &data_size, &pkt );
2209 #elif (LIBAVCODEC_VERSION_INT >= ((51<<16)+(29<<8)+0))
2210                 ret = avcodec_decode_audio2( codec_context, decode_buffer, &data_size, ptr, len );
2211 #else
2212                 ret = avcodec_decode_audio( codec_context, decode_buffer, &data_size, ptr, len );
2213 #endif
2214                 if ( ret < 0 )
2215                 {
2216                         mlt_log_warning( MLT_PRODUCER_SERVICE(self->parent), "audio decoding error %d\n", ret );
2217                         break;
2218                 }
2219
2220                 pkt.size = len -= ret;
2221                 pkt.data = ptr += ret;
2222
2223                 // If decoded successfully
2224                 if ( data_size > 0 )
2225                 {
2226                         // Figure out how many samples will be needed after resampling
2227                         int convert_samples = data_size / codec_context->channels / sample_bytes( codec_context );
2228                         int samples_needed = self->resample_factor * convert_samples;
2229
2230                         // Resize audio buffer to prevent overflow
2231                         if ( ( audio_used + samples_needed ) * channels * sizeof_sample > self->audio_buffer_size[ index ] )
2232                         {
2233                                 self->audio_buffer_size[ index ] = ( audio_used + samples_needed * 2 ) * channels * sizeof_sample;
2234                                 audio_buffer = self->audio_buffer[ index ] = mlt_pool_realloc( audio_buffer, self->audio_buffer_size[ index ] );
2235                         }
2236                         if ( resample )
2237                         {
2238                                 // Copy to audio buffer while resampling
2239                                 uint8_t *source = decode_buffer;
2240                                 uint8_t *dest = &audio_buffer[ audio_used * channels * sizeof_sample ];
2241                                 audio_used += audio_resample( resample, (short*) dest, (short*) source, convert_samples );
2242                         }
2243                         else
2244                         {
2245                                 // Straight copy to audio buffer
2246                                 memcpy( &audio_buffer[ audio_used * codec_context->channels * sizeof_sample ], decode_buffer, data_size );
2247                                 audio_used += convert_samples;
2248                         }
2249
2250                         // Handle ignore
2251                         while ( *ignore && audio_used )
2252                         {
2253                                 *ignore -= 1;
2254                                 audio_used -= audio_used > samples ? samples : audio_used;
2255                                 memmove( audio_buffer, &audio_buffer[ samples * (resample? channels : codec_context->channels) * sizeof_sample ],
2256                                                  audio_used * sizeof_sample );
2257                         }
2258                 }
2259         }
2260
2261         // If we're behind, ignore this packet
2262         // Skip this on non-seekable, audio-only inputs.
2263         if ( pkt.pts >= 0 && ( self->seekable || self->video_format ) && *ignore == 0 && audio_used > samples / 2 )
2264         {
2265                 double current_pts = av_q2d( context->streams[ index ]->time_base ) * pkt.pts;
2266                 int64_t req_position = ( int64_t )( timecode * fps + 0.5 );
2267                 int64_t int_position = ( int64_t )( current_pts * fps + 0.5 );
2268                 if ( context->start_time != AV_NOPTS_VALUE )
2269                         int_position -= ( int64_t )( fps * context->start_time / AV_TIME_BASE + 0.5 );
2270
2271                 if ( int_position > 0 )
2272                 {
2273                         if ( int_position < req_position )
2274                                 // We are behind, so skip some
2275                                 *ignore = req_position - int_position;
2276                         else if ( self->audio_index != INT_MAX && int_position > req_position + 2 )
2277                                 // We are ahead, so seek backwards some more
2278                                 seek_audio( self, req_position, timecode - 1.0, ignore );
2279                 }
2280         }
2281
2282         self->audio_used[ index ] = audio_used;
2283
2284         return ret;
2285 }
2286
2287 /** Get the audio from a frame.
2288 */
2289 static int producer_get_audio( mlt_frame frame, void **buffer, mlt_audio_format *format, int *frequency, int *channels, int *samples )
2290 {
2291         // Get the producer
2292         producer_avformat self = mlt_frame_pop_audio( frame );
2293
2294         pthread_mutex_lock( &self->audio_mutex );
2295
2296         // Obtain the frame number of this frame
2297         mlt_position position = mlt_properties_get_position( MLT_FRAME_PROPERTIES( frame ), "avformat_position" );
2298
2299         // Calculate the real time code
2300         double real_timecode = producer_time_of_frame( self->parent, position );
2301
2302         // Get the producer fps
2303         double fps = mlt_producer_get_fps( self->parent );
2304
2305         // Number of frames to ignore (for ffwd)
2306         int ignore[ MAX_AUDIO_STREAMS ] = { 0 };
2307
2308         // Flag for paused (silence)
2309         int paused = seek_audio( self, position, real_timecode, &ignore[0] );
2310
2311         // Initialize ignore for all streams from the seek return value
2312         int i = MAX_AUDIO_STREAMS;
2313         while ( i-- )
2314                 ignore[i] = ignore[0];
2315
2316         // Fetch the audio_format
2317         AVFormatContext *context = self->audio_format;
2318
2319         int sizeof_sample = sizeof( int16_t );
2320
2321         // Determine the tracks to use
2322         int index = self->audio_index;
2323         int index_max = self->audio_index + 1;
2324         if ( self->audio_index == INT_MAX )
2325         {
2326                 index = 0;
2327                 index_max = context->nb_streams;
2328                 *channels = self->total_channels;
2329                 *samples = *samples * FFMAX( self->max_frequency, *frequency ) / *frequency;
2330                 *frequency = FFMAX( self->max_frequency, *frequency );
2331         }
2332
2333         // Initialize the resamplers and buffers
2334         for ( ; index < index_max; index++ )
2335         {
2336                 // Get codec context
2337                 AVCodecContext *codec_context = self->audio_codec[ index ];
2338
2339                 if ( codec_context && !self->audio_buffer[ index ] )
2340                 {
2341                         // Check for resample and create if necessary
2342                         if ( codec_context->channels <= 2 )
2343                         {
2344                                 // Determine by how much resampling will increase number of samples
2345                                 double resample_factor = self->audio_index == INT_MAX ? 1 : (double) *channels / codec_context->channels;
2346                                 resample_factor *= (double) *frequency / codec_context->sample_rate;
2347                                 if ( resample_factor > self->resample_factor )
2348                                         self->resample_factor = resample_factor;
2349
2350                                 // Create the resampler
2351 #if (LIBAVCODEC_VERSION_INT >= ((52<<16)+(15<<8)+0))
2352                                 self->audio_resample[ index ] = av_audio_resample_init(
2353                                         self->audio_index == INT_MAX ? codec_context->channels : *channels,
2354                                         codec_context->channels, *frequency, codec_context->sample_rate,
2355                                         AV_SAMPLE_FMT_S16, codec_context->sample_fmt, 16, 10, 0, 0.8 );
2356 #else
2357                                 self->audio_resample[ index ] = audio_resample_init(
2358                                         self->audio_index == INT_MAX ? codec_context->channels : *channels,
2359                                         codec_context->channels, *frequency, codec_context->sample_rate );
2360 #endif
2361                         }
2362                         else
2363                         {
2364                                 codec_context->request_channels = self->audio_index == INT_MAX ? codec_context->channels : *channels;
2365                                 sizeof_sample = sample_bytes( codec_context );
2366                         }
2367
2368                         // Check for audio buffer and create if necessary
2369                         self->audio_buffer_size[ index ] = AVCODEC_MAX_AUDIO_FRAME_SIZE * sizeof_sample;
2370                         self->audio_buffer[ index ] = mlt_pool_alloc( self->audio_buffer_size[ index ] );
2371
2372                         // Check for decoder buffer and create if necessary
2373                         self->decode_buffer[ index ] = av_malloc( self->audio_buffer_size[ index ] );
2374                 }
2375         }
2376
2377         // Get the audio if required
2378         if ( !paused )
2379         {
2380                 int ret = 0;
2381                 int got_audio = 0;
2382                 AVPacket pkt;
2383
2384                 av_init_packet( &pkt );
2385
2386                 // If not resampling, give consumer more than requested.
2387                 // It requested number samples based on requested frame rate.
2388                 // Do not clean this up with a samples *= ...!
2389                 if ( self->audio_index != INT_MAX && ! self->audio_resample[ self->audio_index ] )
2390                         *samples = *samples * self->audio_codec[ self->audio_index ]->sample_rate / *frequency;
2391
2392                 while ( ret >= 0 && !got_audio )
2393                 {
2394                         // Check if the buffer already contains the samples required
2395                         if ( self->audio_index != INT_MAX &&
2396                                  self->audio_used[ self->audio_index ] >= *samples &&
2397                                  ignore[ self->audio_index ] == 0 )
2398                         {
2399                                 got_audio = 1;
2400                                 break;
2401                         }
2402                         else if ( self->audio_index == INT_MAX )
2403                         {
2404                                 // Check if there is enough audio for all streams
2405                                 got_audio = 1;
2406                                 for ( index = 0; got_audio && index < context->nb_streams; index++ )
2407                                         if ( ( self->audio_codec[ index ] && self->audio_used[ index ] < *samples ) || ignore[ index ] )
2408                                                 got_audio = 0;
2409                                 if ( got_audio )
2410                                         break;
2411                         }
2412
2413                         // Read a packet
2414                         pthread_mutex_lock( &self->packets_mutex );
2415                         if ( mlt_deque_count( self->apackets ) )
2416                         {
2417                                 AVPacket *tmp = (AVPacket*) mlt_deque_pop_front( self->apackets );
2418                                 pkt = *tmp;
2419                                 free( tmp );
2420                         }
2421                         else
2422                         {
2423                                 ret = av_read_frame( context, &pkt );
2424                                 if ( ret >= 0 && !self->seekable && pkt.stream_index == self->video_index )
2425                                 {
2426                                         if ( !av_dup_packet( &pkt ) )
2427                                         {
2428                                                 AVPacket *tmp = malloc( sizeof(AVPacket) );
2429                                                 *tmp = pkt;
2430                                                 mlt_deque_push_back( self->vpackets, tmp );
2431                                         }
2432                                 }
2433                         }
2434                         pthread_mutex_unlock( &self->packets_mutex );
2435
2436                         // We only deal with audio from the selected audio index
2437                         index = pkt.stream_index;
2438                         if ( ret >= 0 && pkt.data && pkt.size > 0 && ( index == self->audio_index ||
2439                                  ( self->audio_index == INT_MAX && context->streams[ index ]->codec->codec_type == CODEC_TYPE_AUDIO ) ) )
2440                         {
2441                                 int channels2 = ( self->audio_index == INT_MAX || !self->audio_resample[index] ) ?
2442                                         self->audio_codec[index]->channels : *channels;
2443                                 ret = decode_audio( self, &ignore[index], pkt, channels2, *samples, real_timecode, fps );
2444                         }
2445
2446                         if ( self->seekable || index != self->video_index )
2447                                 av_free_packet( &pkt );
2448
2449                 }
2450
2451                 // Set some additional return values
2452                 *format = mlt_audio_s16;
2453                 if ( self->audio_index != INT_MAX && !self->audio_resample[ self->audio_index ] )
2454                 {
2455                         index = self->audio_index;
2456                         *channels = self->audio_codec[ index ]->channels;
2457                         *frequency = self->audio_codec[ index ]->sample_rate;
2458                         *format = self->audio_codec[ index ]->sample_fmt == AV_SAMPLE_FMT_S32 ? mlt_audio_s32le
2459                                 : self->audio_codec[ index ]->sample_fmt == AV_SAMPLE_FMT_FLT ? mlt_audio_f32le
2460                                 : mlt_audio_s16;
2461                         sizeof_sample = sample_bytes( self->audio_codec[ index ] );
2462                 }
2463                 else if ( self->audio_index == INT_MAX )
2464                 {
2465                         // This only works if all audio tracks have the same sample format.
2466                         for ( index = 0; index < index_max; index++ )
2467                                 if ( self->audio_codec[ index ] && !self->audio_resample[ index ] )
2468                                 {
2469                                         *format = self->audio_codec[ index ]->sample_fmt == AV_SAMPLE_FMT_S32 ? mlt_audio_s32le
2470                                                 : self->audio_codec[ index ]->sample_fmt == AV_SAMPLE_FMT_FLT ? mlt_audio_f32le
2471                                                 : mlt_audio_s16;
2472                                         sizeof_sample = sample_bytes( self->audio_codec[ index ] );
2473                                         break;
2474                                 }
2475                 }
2476
2477                 // Allocate and set the frame's audio buffer
2478                 int size = mlt_audio_format_size( *format, *samples, *channels );
2479                 *buffer = mlt_pool_alloc( size );
2480                 mlt_frame_set_audio( frame, *buffer, *format, size, mlt_pool_release );
2481
2482                 // Interleave tracks if audio_index=all
2483                 if ( self->audio_index == INT_MAX )
2484                 {
2485                         uint8_t *dest = *buffer;
2486                         int i;
2487                         for ( i = 0; i < *samples; i++ )
2488                         {
2489                                 for ( index = 0; index < index_max; index++ )
2490                                 if ( self->audio_codec[ index ] )
2491                                 {
2492                                         int current_channels = self->audio_codec[ index ]->channels;
2493                                         uint8_t *src = self->audio_buffer[ index ] + i * current_channels * sizeof_sample;
2494                                         memcpy( dest, src, current_channels * sizeof_sample );
2495                                         dest += current_channels * sizeof_sample;
2496                                 }
2497                         }
2498                         for ( index = 0; index < index_max; index++ )
2499                         if ( self->audio_codec[ index ] && self->audio_used[ index ] >= *samples )
2500                         {
2501                                 int current_channels = self->audio_codec[ index ]->channels;
2502                                 uint8_t *src = self->audio_buffer[ index ] + *samples * current_channels * sizeof_sample;
2503                                 self->audio_used[index] -= *samples;
2504                                 memmove( self->audio_buffer[ index ], src, self->audio_used[ index ] * current_channels * sizeof_sample );
2505                         }
2506                 }
2507                 // Copy a single track to the output buffer
2508                 else
2509                 {
2510                         index = self->audio_index;
2511
2512                         // Now handle the audio if we have enough
2513                         if ( self->audio_used[ index ] > 0 )
2514                         {
2515                                 uint8_t *src = self->audio_buffer[ index ];
2516                                 // copy samples from audio_buffer
2517                                 size = self->audio_used[ index ] < *samples ? self->audio_used[ index ] : *samples;
2518                                 memcpy( *buffer, src, size * *channels * sizeof_sample );
2519                                 // supply the remaining requested samples as silence
2520                                 if ( *samples > self->audio_used[ index ] )
2521                                         memset( *buffer + size * *channels * sizeof_sample, 0, ( *samples - self->audio_used[ index ] ) * *channels * sizeof_sample );
2522                                 // reposition the samples within audio_buffer
2523                                 self->audio_used[ index ] -= size;
2524                                 memmove( src, src + size * *channels * sizeof_sample, self->audio_used[ index ] * *channels * sizeof_sample );
2525                         }
2526                         else
2527                         {
2528                                 // Otherwise fill with silence
2529                                 memset( *buffer, 0, *samples * *channels * sizeof_sample );
2530                         }
2531                 }
2532         }
2533         else
2534         {
2535                 // Get silence and don't touch the context
2536                 mlt_frame_get_audio( frame, buffer, format, frequency, channels, samples );
2537         }
2538
2539         // Regardless of speed (other than paused), we expect to get the next frame
2540         if ( !paused )
2541                 self->audio_expected = position + 1;
2542
2543         pthread_mutex_unlock( &self->audio_mutex );
2544
2545         return 0;
2546 }
2547
2548 /** Initialize the audio codec context.
2549 */
2550
2551 static int audio_codec_init( producer_avformat self, int index, mlt_properties properties )
2552 {
2553         // Initialise the codec if necessary
2554         if ( !self->audio_codec[ index ] )
2555         {
2556                 // Get codec context
2557                 AVCodecContext *codec_context = self->audio_format->streams[index]->codec;
2558
2559                 // Find the codec
2560                 AVCodec *codec = avcodec_find_decoder( codec_context->codec_id );
2561
2562                 // If we don't have a codec and we can't initialise it, we can't do much more...
2563                 pthread_mutex_lock( &self->open_mutex );
2564 #if LIBAVCODEC_VERSION_INT >= ((53<<16)+(8<<8)+0)
2565                 if ( codec && avcodec_open2( codec_context, codec, NULL ) >= 0 )
2566 #else
2567                 if ( codec && avcodec_open( codec_context, codec ) >= 0 )
2568 #endif
2569                 {
2570                         // Now store the codec with its destructor
2571                         if ( self->audio_codec[ index ] )
2572                                 avcodec_close( self->audio_codec[ index ] );
2573                         self->audio_codec[ index ] = codec_context;
2574                 }
2575                 else
2576                 {
2577                         // Remember that we can't use self later
2578                         self->audio_index = -1;
2579                 }
2580                 pthread_mutex_unlock( &self->open_mutex );
2581
2582                 // Process properties as AVOptions
2583                 apply_properties( codec_context, properties, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_DECODING_PARAM );
2584 #if LIBAVCODEC_VERSION_INT >= ((52<<16)+(122<<8)+0)
2585                 if ( codec && codec->priv_class && codec_context->priv_data )
2586                         apply_properties( codec_context->priv_data, properties, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_DECODING_PARAM );
2587 #endif
2588         }
2589         return self->audio_codec[ index ] && self->audio_index > -1;
2590 }
2591
2592 /** Set up audio handling.
2593 */
2594
2595 static void producer_set_up_audio( producer_avformat self, mlt_frame frame )
2596 {
2597         // Get the producer
2598         mlt_producer producer = self->parent;
2599
2600         // Get the properties
2601         mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
2602
2603         // Fetch the audio format context
2604         AVFormatContext *context = self->audio_format;
2605
2606         mlt_properties frame_properties = MLT_FRAME_PROPERTIES( frame );
2607
2608         // Get the audio_index
2609         int index = mlt_properties_get_int( properties, "audio_index" );
2610
2611         // Handle all audio tracks
2612         if ( self->audio_index > -1 &&
2613              mlt_properties_get( properties, "audio_index" ) &&
2614              !strcmp( mlt_properties_get( properties, "audio_index" ), "all" ) )
2615                 index = INT_MAX;
2616
2617         // Reopen the file if necessary
2618         if ( !context && self->audio_index > -1 && index > -1 )
2619         {
2620                 producer_open( self, mlt_service_profile( MLT_PRODUCER_SERVICE(producer) ),
2621                         mlt_properties_get( properties, "resource" ), 1 );
2622                 context = self->audio_format;
2623         }
2624
2625         // Exception handling for audio_index
2626         if ( context && index >= (int) context->nb_streams && index < INT_MAX )
2627         {
2628                 for ( index = context->nb_streams - 1;
2629                           index >= 0 && context->streams[ index ]->codec->codec_type != CODEC_TYPE_AUDIO;
2630                           index-- );
2631                 mlt_properties_set_int( properties, "audio_index", index );
2632         }
2633         if ( context && index > -1 && index < INT_MAX &&
2634                  context->streams[ index ]->codec->codec_type != CODEC_TYPE_AUDIO )
2635         {
2636                 index = self->audio_index;
2637                 mlt_properties_set_int( properties, "audio_index", index );
2638         }
2639
2640         // Update the audio properties if the index changed
2641         if ( context && index > -1 && index != self->audio_index )
2642         {
2643                 pthread_mutex_lock( &self->open_mutex );
2644                 if ( self->audio_codec[ self->audio_index ] )
2645                         avcodec_close( self->audio_codec[ self->audio_index ] );
2646                 self->audio_codec[ self->audio_index ] = NULL;
2647                 pthread_mutex_unlock( &self->open_mutex );
2648         }
2649         if ( self->audio_index != -1 )
2650                 self->audio_index = index;
2651         else
2652                 index = -1;
2653
2654         // Get the codec(s)
2655         if ( context && index == INT_MAX )
2656         {
2657                 mlt_properties_set_int( frame_properties, "audio_frequency", self->max_frequency );
2658                 mlt_properties_set_int( frame_properties, "audio_channels", self->total_channels );
2659                 for ( index = 0; index < context->nb_streams; index++ )
2660                 {
2661                         if ( context->streams[ index ]->codec->codec_type == CODEC_TYPE_AUDIO )
2662                                 audio_codec_init( self, index, properties );
2663                 }
2664         }
2665         else if ( context && index > -1 && audio_codec_init( self, index, properties ) )
2666         {
2667                 // Set the frame properties
2668                 if ( index < INT_MAX )
2669                 {
2670                         mlt_properties_set_int( frame_properties, "frequency", self->audio_codec[ index ]->sample_rate );
2671                         mlt_properties_set_int( frame_properties, "channels", self->audio_codec[ index ]->channels );
2672                 }
2673         }
2674         if ( context && index > -1 )
2675         {
2676                 // Add our audio operation
2677                 mlt_frame_push_audio( frame, self );
2678                 mlt_frame_push_audio( frame, producer_get_audio );
2679         }
2680 }
2681
2682 /** Our get frame implementation.
2683 */
2684
2685 static int producer_get_frame( mlt_producer producer, mlt_frame_ptr frame, int index )
2686 {
2687         // Access the private data
2688         mlt_service service = MLT_PRODUCER_SERVICE( producer );
2689         mlt_cache_item cache_item = mlt_service_cache_get( service, "producer_avformat" );
2690         producer_avformat self = mlt_cache_item_data( cache_item, NULL );
2691
2692         // If cache miss
2693         if ( !self )
2694         {
2695                 self = calloc( 1, sizeof( struct producer_avformat_s ) );
2696                 producer->child = self;
2697                 self->parent = producer;
2698                 mlt_service_cache_put( service, "producer_avformat", self, 0, (mlt_destructor) producer_avformat_close );
2699                 cache_item = mlt_service_cache_get( service, "producer_avformat" );
2700         }
2701
2702         // Create an empty frame
2703         *frame = mlt_frame_init( service);
2704
2705         if ( *frame )
2706         {
2707                 mlt_properties_set_data( MLT_FRAME_PROPERTIES(*frame), "avformat_cache", cache_item, 0, (mlt_destructor) mlt_cache_item_close, NULL );
2708         }
2709         else
2710         {
2711                 mlt_cache_item_close( cache_item );
2712                 return 1;
2713         }
2714
2715         // Update timecode on the frame we're creating
2716         mlt_frame_set_position( *frame, mlt_producer_position( producer ) );
2717
2718         // Set up the video
2719         producer_set_up_video( self, *frame );
2720
2721         // Set up the audio
2722         producer_set_up_audio( self, *frame );
2723
2724         // Set the position of this producer
2725         mlt_position position = self->seekable ? mlt_producer_frame( producer ) : self->nonseek_position++;
2726         mlt_properties_set_position( MLT_FRAME_PROPERTIES( *frame ), "avformat_position", position );
2727
2728         // Calculate the next timecode
2729         mlt_producer_prepare_next( producer );
2730
2731         return 0;
2732 }
2733
2734 static void producer_avformat_close( producer_avformat self )
2735 {
2736         mlt_log_debug( NULL, "producer_avformat_close\n" );
2737
2738         // Cleanup av contexts
2739         av_free( self->av_frame );
2740         pthread_mutex_lock( &self->open_mutex );
2741         int i;
2742         for ( i = 0; i < MAX_AUDIO_STREAMS; i++ )
2743         {
2744                 if ( self->audio_resample[i] )
2745                         audio_resample_close( self->audio_resample[i] );
2746                 mlt_pool_release( self->audio_buffer[i] );
2747                 av_free( self->decode_buffer[i] );
2748                 if ( self->audio_codec[i] )
2749                         avcodec_close( self->audio_codec[i] );
2750                 self->audio_codec[i] = NULL;
2751         }
2752         if ( self->video_codec )
2753                 avcodec_close( self->video_codec );
2754         self->video_codec = NULL;
2755         // Close the file
2756 #if LIBAVFORMAT_VERSION_INT >= ((53<<16)+(17<<8)+0)
2757         if ( self->dummy_context )
2758                 avformat_close_input( &self->dummy_context );
2759         if ( self->seekable && self->audio_format )
2760                 avformat_close_input( &self->audio_format );
2761         if ( self->video_format )
2762                 avformat_close_input( &self->video_format );
2763 #else
2764         if ( self->dummy_context )
2765                 av_close_input_file( self->dummy_context );
2766         if ( self->seekable && self->audio_format )
2767                 av_close_input_file( self->audio_format );
2768         if ( self->video_format )
2769                 av_close_input_file( self->video_format );
2770 #endif
2771         pthread_mutex_unlock( &self->open_mutex );
2772 #ifdef VDPAU
2773         vdpau_producer_close( self );
2774 #endif
2775         if ( self->image_cache )
2776                 mlt_cache_close( self->image_cache );
2777         if ( self->alpha_cache )
2778                 mlt_cache_close( self->alpha_cache );
2779
2780         // Cleanup the mutexes
2781         pthread_mutex_destroy( &self->audio_mutex );
2782         pthread_mutex_destroy( &self->video_mutex );
2783         pthread_mutex_destroy( &self->packets_mutex );
2784         pthread_mutex_destroy( &self->open_mutex );
2785
2786         // Cleanup the packet queues
2787         AVPacket *pkt;
2788         if ( self->apackets )
2789         {
2790                 while ( ( pkt = mlt_deque_pop_back( self->apackets ) ) )
2791                 {
2792                         av_free_packet( pkt );
2793                         free( pkt );
2794                 }
2795                 mlt_deque_close( self->apackets );
2796                 self->apackets = NULL;
2797         }
2798         if ( self->vpackets )
2799         {
2800                 while ( ( pkt = mlt_deque_pop_back( self->vpackets ) ) )
2801                 {
2802                         av_free_packet( pkt );
2803                         free( pkt );
2804                 }
2805                 mlt_deque_close( self->vpackets );
2806                 self->vpackets = NULL;
2807         }
2808
2809         free( self );
2810 }
2811
2812 static void producer_close( mlt_producer parent )
2813 {
2814         // Remove this instance from the cache
2815         mlt_service_cache_purge( MLT_PRODUCER_SERVICE(parent) );
2816
2817         // Close the parent
2818         parent->close = NULL;
2819         mlt_producer_close( parent );
2820
2821         // Free the memory
2822         free( parent );
2823 }