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         int64_t first_pts;
 100         int64_t last_position;
 101         int seekable;
 102         int64_t current_position;
 103         mlt_position nonseek_position;
 104         int top_field_first;
 105         uint8_t *audio_buffer[ MAX_AUDIO_STREAMS ];
 106         size_t audio_buffer_size[ MAX_AUDIO_STREAMS ];
 107         uint8_t *decode_buffer[ MAX_AUDIO_STREAMS ];
 108         int audio_used[ MAX_AUDIO_STREAMS ];
 109         int audio_streams;
 110         int audio_max_stream;
 111         int total_channels;
 112         int max_channel;
 113         int max_frequency;
 114         unsigned int invalid_pts_counter;
 115         double resample_factor;
 116         mlt_cache image_cache;
 117         int colorspace;
 118         pthread_mutex_t video_mutex;
 119         pthread_mutex_t audio_mutex;
 120         mlt_deque apackets;
 121         mlt_deque vpackets;
 122         pthread_mutex_t packets_mutex;
 123         pthread_mutex_t open_mutex;
 124 #ifdef VDPAU
 125         struct
 126         {
 127                 // from FFmpeg
 128                 struct vdpau_render_state render_states[MAX_VDPAU_SURFACES];
 129
 130                 // internal
 131                 mlt_deque deque;
 132                 int b_age;
 133                 int ip_age[2];
 134                 int is_decoded;
 135                 uint8_t *buffer;
 136
 137                 VdpDevice device;
 138                 VdpDecoder decoder;
 139         } *vdpau;
 140 #endif
 141 };
 142 typedef struct producer_avformat_s *producer_avformat;
 143
 144 // Forward references.
 145 static int list_components( char* file );
 146 static int producer_open( producer_avformat self, mlt_profile profile, const char *URL, int take_lock );
 147 static int producer_get_frame( mlt_producer producer, mlt_frame_ptr frame, int index );
 148 static void producer_avformat_close( producer_avformat );
 149 static void producer_close( mlt_producer parent );
 150 static void producer_set_up_video( producer_avformat self, mlt_frame frame );
 151 static void producer_set_up_audio( producer_avformat self, mlt_frame frame );
 152 static void apply_properties( void *obj, mlt_properties properties, int flags );
 153 static int video_codec_init( producer_avformat self, int index, mlt_properties properties );
 154 static void get_audio_streams_info( producer_avformat self );
 155
 156 #ifdef VDPAU
 157 #include "vdpau.c"
 158 #endif
 159
 160 /** Constructor for libavformat.
 161 */
 162
 163 mlt_producer producer_avformat_init( mlt_profile profile, const char *service, char *file )
 164 {
 165         if ( list_components( file ) )
 166                 return NULL;
 167
 168         mlt_producer producer = NULL;
 169
 170         // Check that we have a non-NULL argument
 171         if ( file )
 172         {
 173                 // Construct the producer
 174                 producer_avformat self = calloc( 1, sizeof( struct producer_avformat_s ) );
 175                 producer = calloc( 1, sizeof( struct mlt_producer_s ) );
 176
 177                 // Initialise it
 178                 if ( mlt_producer_init( producer, self ) == 0 )
 179                 {
 180                         self->parent = producer;
 181
 182                         // Get the properties
 183                         mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
 184
 185                         // Set the resource property (required for all producers)
 186                         mlt_properties_set( properties, "resource", file );
 187
 188                         // Register transport implementation with the producer
 189                         producer->close = (mlt_destructor) producer_close;
 190
 191                         // Register our get_frame implementation
 192                         producer->get_frame = producer_get_frame;
 193
 194                         if ( strcmp( service, "avformat-novalidate" ) )
 195                         {
 196                                 // Open the file
 197                                 if ( producer_open( self, profile, file, 1 ) != 0 )
 198                                 {
 199                                         // Clean up
 200                                         mlt_producer_close( producer );
 201                                         producer = NULL;
 202                                         producer_avformat_close( self );
 203                                 }
 204                                 else if ( self->seekable )
 205                                 {
 206                                         // Close the file to release resources for large playlists - reopen later as needed
 207 #if LIBAVFORMAT_VERSION_INT >= ((53<<16)+(17<<8)+0)
 208                                         if ( self->audio_format )
 209                                                 avformat_close_input( &self->audio_format );
 210                                         if ( self->video_format )
 211                                                 avformat_close_input( &self->video_format );
 212 #else
 213                                         if ( self->audio_format )
 214                                                 av_close_input_file( self->audio_format );
 215                                         if ( self->video_format )
 216                                                 av_close_input_file( self->video_format );
 217 #endif
 218                                         self->audio_format = NULL;
 219                                         self->video_format = NULL;
 220                                 }
 221                         }
 222                         if ( producer )
 223                         {
 224                                 // Default the user-selectable indices from the auto-detected indices
 225                                 mlt_properties_set_int( properties, "audio_index",  self->audio_index );
 226                                 mlt_properties_set_int( properties, "video_index",  self->video_index );
 227 #ifdef VDPAU
 228                                 mlt_service_cache_set_size( MLT_PRODUCER_SERVICE(producer), "producer_avformat", 5 );
 229 #endif
 230                                 mlt_service_cache_put( MLT_PRODUCER_SERVICE(producer), "producer_avformat", self, 0, (mlt_destructor) producer_avformat_close );
 231                         }
 232                 }
 233         }
 234         return producer;
 235 }
 236
 237 int list_components( char* file )
 238 {
 239         int skip = 0;
 240
 241         // Report information about available demuxers and codecs as YAML Tiny
 242         if ( file && strstr( file, "f-list" ) )
 243         {
 244                 fprintf( stderr, "---\nformats:\n" );
 245                 AVInputFormat *format = NULL;
 246                 while ( ( format = av_iformat_next( format ) ) )
 247                         fprintf( stderr, "  - %s\n", format->name );
 248                 fprintf( stderr, "...\n" );
 249                 skip = 1;
 250         }
 251         if ( file && strstr( file, "acodec-list" ) )
 252         {
 253                 fprintf( stderr, "---\naudio_codecs:\n" );
 254                 AVCodec *codec = NULL;
 255                 while ( ( codec = av_codec_next( codec ) ) )
 256                         if ( codec->decode && codec->type == CODEC_TYPE_AUDIO )
 257                                 fprintf( stderr, "  - %s\n", codec->name );
 258                 fprintf( stderr, "...\n" );
 259                 skip = 1;
 260         }
 261         if ( file && strstr( file, "vcodec-list" ) )
 262         {
 263                 fprintf( stderr, "---\nvideo_codecs:\n" );
 264                 AVCodec *codec = NULL;
 265                 while ( ( codec = av_codec_next( codec ) ) )
 266                         if ( codec->decode && codec->type == CODEC_TYPE_VIDEO )
 267                                 fprintf( stderr, "  - %s\n", codec->name );
 268                 fprintf( stderr, "...\n" );
 269                 skip = 1;
 270         }
 271
 272         return skip;
 273 }
 274
 275 /** Find the default streams.
 276 */
 277
 278 static mlt_properties find_default_streams( producer_avformat self )
 279 {
 280         int i;
 281         char key[200];
 282 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(8<<8)+0)
 283         AVDictionaryEntry *tag = NULL;
 284 #else
 285         AVMetadataTag *tag = NULL;
 286 #endif
 287         AVFormatContext *context = self->video_format;
 288         mlt_properties meta_media = MLT_PRODUCER_PROPERTIES( self->parent );
 289
 290         // Default to the first audio and video streams found
 291         self->audio_index = -1;
 292         self->video_index = -1;
 293
 294         mlt_properties_set_int( meta_media, "meta.media.nb_streams", context->nb_streams );
 295
 296         // Allow for multiple audio and video streams in the file and select first of each (if available)
 297         for( i = 0; i < context->nb_streams; i++ )
 298         {
 299                 // Get the codec context
 300                 AVStream *stream = context->streams[ i ];
 301                 if ( ! stream ) continue;
 302                 AVCodecContext *codec_context = stream->codec;
 303                 if ( ! codec_context ) continue;
 304                 AVCodec *codec = avcodec_find_decoder( codec_context->codec_id );
 305                 if ( ! codec ) continue;
 306
 307                 snprintf( key, sizeof(key), "meta.media.%d.stream.type", i );
 308
 309                 // Determine the type and obtain the first index of each type
 310                 switch( codec_context->codec_type )
 311                 {
 312                         case CODEC_TYPE_VIDEO:
 313                                 // Use first video stream
 314                                 if ( self->video_index < 0 )
 315                                         self->video_index = i;
 316                                 mlt_properties_set( meta_media, key, "video" );
 317                                 snprintf( key, sizeof(key), "meta.media.%d.stream.frame_rate", i );
 318 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(42<<8)+0)
 319                                 double ffmpeg_fps = av_q2d( context->streams[ i ]->avg_frame_rate );
 320                                 if ( isnan( ffmpeg_fps ) || ffmpeg_fps == 0 )
 321                                         ffmpeg_fps = av_q2d( context->streams[ i ]->r_frame_rate );
 322                                 mlt_properties_set_double( meta_media, key, ffmpeg_fps );
 323 #else
 324                                 mlt_properties_set_double( meta_media, key, av_q2d( context->streams[ i ]->r_frame_rate ) );
 325 #endif
 326
 327 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(21<<8)+0)
 328                                 snprintf( key, sizeof(key), "meta.media.%d.stream.sample_aspect_ratio", i );
 329                                 mlt_properties_set_double( meta_media, key, av_q2d( context->streams[ i ]->sample_aspect_ratio ) );
 330 #endif
 331                                 snprintf( key, sizeof(key), "meta.media.%d.codec.width", i );
 332                                 mlt_properties_set_int( meta_media, key, codec_context->width );
 333                                 snprintf( key, sizeof(key), "meta.media.%d.codec.height", i );
 334                                 mlt_properties_set_int( meta_media, key, codec_context->height );
 335                                 snprintf( key, sizeof(key), "meta.media.%d.codec.frame_rate", i );
 336                                 mlt_properties_set_double( meta_media, key, (double) codec_context->time_base.den /
 337                                                                                    ( codec_context->time_base.num == 0 ? 1 : codec_context->time_base.num ) );
 338                                 snprintf( key, sizeof(key), "meta.media.%d.codec.pix_fmt", i );
 339 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(3<<8)+0)
 340                                 mlt_properties_set( meta_media, key, av_get_pix_fmt_name( codec_context->pix_fmt ) );
 341 #else
 342                                 mlt_properties_set( meta_media, key, avcodec_get_pix_fmt_name( codec_context->pix_fmt ) );
 343 #endif
 344                                 snprintf( key, sizeof(key), "meta.media.%d.codec.sample_aspect_ratio", i );
 345                                 mlt_properties_set_double( meta_media, key, av_q2d( codec_context->sample_aspect_ratio ) );
 346 #if LIBAVCODEC_VERSION_INT > ((52<<16)+(28<<8)+0)
 347                                 snprintf( key, sizeof(key), "meta.media.%d.codec.colorspace", i );
 348                                 switch ( codec_context->colorspace )
 349                                 {
 350                                 case AVCOL_SPC_SMPTE240M:
 351                                         mlt_properties_set_int( meta_media, key, 240 );
 352                                         break;
 353                                 case AVCOL_SPC_BT470BG:
 354                                 case AVCOL_SPC_SMPTE170M:
 355                                         mlt_properties_set_int( meta_media, key, 601 );
 356                                         break;
 357                                 case AVCOL_SPC_BT709:
 358                                         mlt_properties_set_int( meta_media, key, 709 );
 359                                         break;
 360                                 default:
 361                                         // This is a heuristic Charles Poynton suggests in "Digital Video and HDTV"
 362                                         mlt_properties_set_int( meta_media, key, codec_context->width * codec_context->height > 750000 ? 709 : 601 );
 363                                         break;
 364                                 }
 365 #endif
 366                                 break;
 367                         case CODEC_TYPE_AUDIO:
 368                                 if ( !codec_context->channels )
 369                                         break;
 370                                 // Use first audio stream
 371                                 if ( self->audio_index < 0 )
 372                                         self->audio_index = i;
 373                                 mlt_properties_set( meta_media, key, "audio" );
 374 #if LIBAVUTIL_VERSION_INT >= ((50<<16)+(38<<8)+0)
 375                                 snprintf( key, sizeof(key), "meta.media.%d.codec.sample_fmt", i );
 376                                 mlt_properties_set( meta_media, key, av_get_sample_fmt_name( codec_context->sample_fmt ) );
 377 #elif (LIBAVCODEC_VERSION_INT >= ((51<<16)+(71<<8)+0))
 378                                 snprintf( key, sizeof(key), "meta.media.%d.codec.sample_fmt", i );
 379                                 mlt_properties_set( meta_media, key, avcodec_get_sample_fmt_name( codec_context->sample_fmt ) );
 380 #endif
 381                                 snprintf( key, sizeof(key), "meta.media.%d.codec.sample_rate", i );
 382                                 mlt_properties_set_int( meta_media, key, codec_context->sample_rate );
 383                                 snprintf( key, sizeof(key), "meta.media.%d.codec.channels", i );
 384                                 mlt_properties_set_int( meta_media, key, codec_context->channels );
 385                                 break;
 386                         default:
 387                                 break;
 388                 }
 389 //              snprintf( key, sizeof(key), "meta.media.%d.stream.time_base", i );
 390 //              mlt_properties_set_double( meta_media, key, av_q2d( context->streams[ i ]->time_base ) );
 391                 snprintf( key, sizeof(key), "meta.media.%d.codec.name", i );
 392                 mlt_properties_set( meta_media, key, codec->name );
 393 #if (LIBAVCODEC_VERSION_INT >= ((51<<16)+(55<<8)+0))
 394                 snprintf( key, sizeof(key), "meta.media.%d.codec.long_name", i );
 395                 mlt_properties_set( meta_media, key, codec->long_name );
 396 #endif
 397                 snprintf( key, sizeof(key), "meta.media.%d.codec.bit_rate", i );
 398                 mlt_properties_set_int( meta_media, key, codec_context->bit_rate );
 399 //              snprintf( key, sizeof(key), "meta.media.%d.codec.time_base", i );
 400 //              mlt_properties_set_double( meta_media, key, av_q2d( codec_context->time_base ) );
 401 //              snprintf( key, sizeof(key), "meta.media.%d.codec.profile", i );
 402 //              mlt_properties_set_int( meta_media, key, codec_context->profile );
 403 //              snprintf( key, sizeof(key), "meta.media.%d.codec.level", i );
 404 //              mlt_properties_set_int( meta_media, key, codec_context->level );
 405
 406                 // Read Metadata
 407 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(31<<8)+0)
 408 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(8<<8)+0)
 409                 while ( ( tag = av_dict_get( stream->metadata, "", tag, AV_DICT_IGNORE_SUFFIX ) ) )
 410 #else
 411                 while ( ( tag = av_metadata_get( stream->metadata, "", tag, AV_METADATA_IGNORE_SUFFIX ) ) )
 412 #endif
 413                 {
 414                         if ( tag->value && strcmp( tag->value, "" ) && strcmp( tag->value, "und" ) )
 415                         {
 416                                 snprintf( key, sizeof(key), "meta.attr.%d.stream.%s.markup", i, tag->key );
 417                                 mlt_properties_set( meta_media, key, tag->value );
 418                         }
 419                 }
 420 #endif
 421         }
 422 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(31<<8)+0)
 423 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(8<<8)+0)
 424         while ( ( tag = av_dict_get( context->metadata, "", tag, AV_DICT_IGNORE_SUFFIX ) ) )
 425 #else
 426         while ( ( tag = av_metadata_get( context->metadata, "", tag, AV_METADATA_IGNORE_SUFFIX ) ) )
 427 #endif
 428         {
 429                 if ( tag->value && strcmp( tag->value, "" ) && strcmp( tag->value, "und" ) )
 430                 {
 431                         snprintf( key, sizeof(key), "meta.attr.%s.markup", tag->key );
 432                         mlt_properties_set( meta_media, key, tag->value );
 433                 }
 434         }
 435 #else
 436         if ( context->title && strcmp( context->title, "" ) )
 437                 mlt_properties_set(properties, "meta.attr.title.markup", context->title );
 438         if ( context->author && strcmp( context->author, "" ) )
 439                 mlt_properties_set(properties, "meta.attr.author.markup", context->author );
 440         if ( context->copyright && strcmp( context->copyright, "" ) )
 441                 mlt_properties_set(properties, "meta.attr.copyright.markup", context->copyright );
 442         if ( context->comment )
 443                 mlt_properties_set(properties, "meta.attr.comment.markup", context->comment );
 444         if ( context->album )
 445                 mlt_properties_set(properties, "meta.attr.album.markup", context->album );
 446         if ( context->year )
 447                 mlt_properties_set_int(properties, "meta.attr.year.markup", context->year );
 448         if ( context->track )
 449                 mlt_properties_set_int(properties, "meta.attr.track.markup", context->track );
 450 #endif
 451
 452         return meta_media;
 453 }
 454
 455 static inline int dv_is_pal( AVPacket *pkt )
 456 {
 457         return pkt->data[3] & 0x80;
 458 }
 459
 460 static int dv_is_wide( AVPacket *pkt )
 461 {
 462         int i = 80 /* block size */ *3 /* VAUX starts at block 3 */ +3 /* skip block header */;
 463
 464         for ( ; i < pkt->size; i += 5 /* packet size */ )
 465         {
 466                 if ( pkt->data[ i ] == 0x61 )
 467                 {
 468                         uint8_t x = pkt->data[ i + 2 ] & 0x7;
 469                         return ( x == 2 ) || ( x == 7 );
 470                 }
 471         }
 472         return 0;
 473 }
 474
 475 static double get_aspect_ratio( mlt_properties properties, AVStream *stream, AVCodecContext *codec_context, AVPacket *pkt )
 476 {
 477         double aspect_ratio = 1.0;
 478
 479         if ( codec_context->codec_id == CODEC_ID_DVVIDEO )
 480         {
 481                 if ( pkt )
 482                 {
 483                         if ( dv_is_pal( pkt ) )
 484                         {
 485                                 if ( dv_is_wide( pkt ) )
 486                                 {
 487                                         mlt_properties_set_int( properties, "meta.media.sample_aspect_num", 64 );
 488                                         mlt_properties_set_int( properties, "meta.media.sample_aspect_den", 45 );
 489                                 }
 490                                 else
 491                                 {
 492                                         mlt_properties_set_int( properties, "meta.media.sample_aspect_num", 16 );
 493                                         mlt_properties_set_int( properties, "meta.media.sample_aspect_den", 15 );
 494                                 }
 495                         }
 496                         else
 497                         {
 498                                 if ( dv_is_wide( pkt ) )
 499                                 {
 500                                         mlt_properties_set_int( properties, "meta.media.sample_aspect_num", 32 );
 501                                         mlt_properties_set_int( properties, "meta.media.sample_aspect_den", 27 );
 502                                 }
 503                                 else
 504                                 {
 505                                         mlt_properties_set_int( properties, "meta.media.sample_aspect_num", 8 );
 506                                         mlt_properties_set_int( properties, "meta.media.sample_aspect_den", 9 );
 507                                 }
 508                         }
 509                 }
 510                 else
 511                 {
 512                         AVRational ar =
 513 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(21<<8)+0)
 514                                 stream->sample_aspect_ratio;
 515 #else
 516                                 codec_context->sample_aspect_ratio;
 517 #endif
 518                         // Override FFmpeg's notion of DV aspect ratios, which are
 519                         // based upon a width of 704. Since we do not have a normaliser
 520                         // that crops (nor is cropping 720 wide ITU-R 601 video always desirable)
 521                         // we just coerce the values to facilitate a passive behaviour through
 522                         // the rescale normaliser when using equivalent producers and consumers.
 523                         // = display_aspect / (width * height)
 524                         if ( ar.num == 10 && ar.den == 11 )
 525                         {
 526                                 // 4:3 NTSC
 527                                 mlt_properties_set_int( properties, "meta.media.sample_aspect_num", 8 );
 528                                 mlt_properties_set_int( properties, "meta.media.sample_aspect_den", 9 );
 529                         }
 530                         else if ( ar.num == 59 && ar.den == 54 )
 531                         {
 532                                 // 4:3 PAL
 533                                 mlt_properties_set_int( properties, "meta.media.sample_aspect_num", 16 );
 534                                 mlt_properties_set_int( properties, "meta.media.sample_aspect_den", 15 );
 535                         }
 536                         else if ( ar.num == 40 && ar.den == 33 )
 537                         {
 538                                 // 16:9 NTSC
 539                                 mlt_properties_set_int( properties, "meta.media.sample_aspect_num", 32 );
 540                                 mlt_properties_set_int( properties, "meta.media.sample_aspect_den", 27 );
 541                         }
 542                         else if ( ar.num == 118 && ar.den == 81 )
 543                         {
 544                                 // 16:9 PAL
 545                                 mlt_properties_set_int( properties, "meta.media.sample_aspect_num", 64 );
 546                                 mlt_properties_set_int( properties, "meta.media.sample_aspect_den", 45 );
 547                         }
 548                 }
 549         }
 550         else
 551         {
 552                 AVRational codec_sar = codec_context->sample_aspect_ratio;
 553                 AVRational stream_sar =
 554 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(21<<8)+0)
 555                         stream->sample_aspect_ratio;
 556 #else
 557                         { 0, 1 };
 558 #endif
 559                 if ( codec_sar.num > 0 )
 560                 {
 561                         mlt_properties_set_int( properties, "meta.media.sample_aspect_num", codec_sar.num );
 562                         mlt_properties_set_int( properties, "meta.media.sample_aspect_den", codec_sar.den );
 563                 }
 564                 else if ( stream_sar.num > 0 )
 565                 {
 566                         mlt_properties_set_int( properties, "meta.media.sample_aspect_num", stream_sar.num );
 567                         mlt_properties_set_int( properties, "meta.media.sample_aspect_den", stream_sar.den );
 568                 }
 569                 else
 570                 {
 571                         mlt_properties_set_int( properties, "meta.media.sample_aspect_num", 1 );
 572                         mlt_properties_set_int( properties, "meta.media.sample_aspect_den", 1 );
 573                 }
 574         }
 575         AVRational ar = { mlt_properties_get_double( properties, "meta.media.sample_aspect_num" ), mlt_properties_get_double( properties, "meta.media.sample_aspect_den" ) };
 576         aspect_ratio = av_q2d( ar );
 577         mlt_properties_set_double( properties, "aspect_ratio", aspect_ratio );
 578
 579         return aspect_ratio;
 580 }
 581
 582 #if LIBAVFORMAT_VERSION_INT > ((53<<16)+(6<<8)+0)
 583 static char* parse_url( mlt_profile profile, const char* URL, AVInputFormat **format, AVDictionary **params )
 584 #else
 585 static char* parse_url( mlt_profile profile, const char* URL, AVInputFormat **format, AVFormatParameters *params )
 586 #endif
 587 {
 588         if ( !URL ) return NULL;
 589
 590         char *result = NULL;
 591         char *protocol = strdup( URL );
 592         char *url = strchr( protocol, ':' );
 593
 594         // Only if there is not a protocol specification that avformat can handle
 595 #if LIBAVFORMAT_VERSION_MAJOR >= 53
 596         if ( url && avio_check( URL, 0 ) < 0 )
 597 #else
 598         if ( url && !url_exist( URL ) )
 599 #endif
 600         {
 601                 // Truncate protocol string
 602                 url[0] = 0;
 603                 mlt_log_debug( NULL, "%s: protocol=%s resource=%s\n", __FUNCTION__, protocol, url + 1 );
 604
 605                 // Lookup the format
 606                 *format = av_find_input_format( protocol );
 607
 608                 // Eat the format designator
 609                 result = ++url;
 610
 611                 if ( *format )
 612                 {
 613 #if LIBAVFORMAT_VERSION_INT > ((53<<16)+(6<<8)+0)
 614                         // support for legacy width and height parameters
 615                         char *width = NULL;
 616                         char *height = NULL;
 617 #else
 618                         // These are required by video4linux2 (defaults)
 619                         params->width = profile->width;
 620                         params->height = profile->height;
 621                         if ( !strstr( URL, "&frame_rate" ) )
 622                                 params->time_base = (AVRational){ profile->frame_rate_den, profile->frame_rate_num };
 623                         params->channels = 2;
 624                         params->sample_rate = 48000;
 625 #endif
 626
 627                         // Parse out params
 628                         url = strchr( url, '?' );
 629                         while ( url )
 630                         {
 631                                 url[0] = 0;
 632                                 char *name = strdup( ++url );
 633                                 char *value = strchr( name, '=' );
 634                                 if ( !value )
 635                                         // Also accept : as delimiter for backwards compatibility.
 636                                         value = strchr( name, ':' );
 637                                 if ( value )
 638                                 {
 639                                         value[0] = 0;
 640                                         value++;
 641                                         char *t = strchr( value, '&' );
 642                                         if ( t )
 643                                                 t[0] = 0;
 644 #if LIBAVFORMAT_VERSION_INT > ((53<<16)+(6<<8)+0)
 645                                         // translate old parameters to new av_dict names
 646                                         if ( !strcmp( name, "frame_rate" ) )
 647                                                 av_dict_set( params, "framerate", value, 0 );
 648                                         else if ( !strcmp( name, "pix_fmt" ) )
 649                                                 av_dict_set( params, "pixel_format", value, 0 );
 650                                         else if ( !strcmp( name, "width" ) )
 651                                                 width = strdup( value );
 652                                         else if ( !strcmp( name, "height" ) )
 653                                                 height = strdup( value );
 654                                         else
 655                                                 // generic demux/device option support
 656                                                 av_dict_set( params, name, value, 0 );
 657 #else
 658                                         if ( !strcmp( name, "frame_rate" ) )
 659                                                 params->time_base.den = atoi( value );
 660                                         else if ( !strcmp( name, "frame_rate_base" ) )
 661                                                 params->time_base.num = atoi( value );
 662                                         else if ( !strcmp( name, "sample_rate" ) )
 663                                                 params->sample_rate = atoi( value );
 664                                         else if ( !strcmp( name, "channel" ) )
 665                                                 params->channel = atoi( value );
 666                                         else if ( !strcmp( name, "channels" ) )
 667                                                 params->channels = atoi( value );
 668 #if (LIBAVUTIL_VERSION_INT > ((50<<16)+(7<<8)+0))
 669                                         else if ( !strcmp( name, "pix_fmt" ) )
 670                                                 params->pix_fmt = av_get_pix_fmt( value );
 671 #endif
 672                                         else if ( !strcmp( name, "width" ) )
 673                                                 params->width = atoi( value );
 674                                         else if ( !strcmp( name, "height" ) )
 675                                                 params->height = atoi( value );
 676                                         else if ( !strcmp( name, "standard" ) )
 677                                                 params->standard = strdup( value );
 678 #endif
 679                                 }
 680                                 free( name );
 681                                 url = strchr( url, '&' );
 682                         }
 683 #if LIBAVFORMAT_VERSION_INT > ((53<<16)+(6<<8)+0)
 684                         // continued support for legacy width and height parameters
 685                         if ( width && height )
 686                         {
 687                                 char *s = malloc( strlen( width ) + strlen( height ) + 2 );
 688                                 strcpy( s, width );
 689                                 strcat( s, "x");
 690                                 strcat( s, height );
 691                                 av_dict_set( params, "video_size", s, 0 );
 692                                 free( s );
 693                         }
 694                         if ( width ) free( width );
 695                         if ( height ) free ( height );
 696 #endif
 697                 }
 698                 result = strdup( result );
 699         }
 700         else
 701         {
 702                 result = strdup( URL );
 703         }
 704         free( protocol );
 705         return result;
 706 }
 707
 708 static int get_basic_info( producer_avformat self, mlt_profile profile, const char *filename )
 709 {
 710         int error = 0;
 711
 712         // Get the properties
 713         mlt_properties properties = MLT_PRODUCER_PROPERTIES( self->parent );
 714
 715         AVFormatContext *format = self->video_format;
 716
 717         // We will treat everything with the producer fps.
 718         // TODO: make this more flexible.
 719         double fps = mlt_profile_fps( profile );
 720
 721         // Get the duration
 722         if ( !mlt_properties_get_int( properties, "_length_computed" ) )
 723         {
 724                 // The _length_computed flag prevents overwriting explicity set length/out/eof properties
 725                 // when producer_open is called after initial call when restoring or reseting the producer.
 726                 if ( format->duration != AV_NOPTS_VALUE )
 727                 {
 728                         // This isn't going to be accurate for all formats
 729                         mlt_position frames = ( mlt_position )( ( ( double )format->duration / ( double )AV_TIME_BASE ) * fps );
 730                         mlt_properties_set_position( properties, "out", frames - 1 );
 731                         mlt_properties_set_position( properties, "length", frames );
 732                         mlt_properties_set_int( properties, "_length_computed", 1 );
 733                 }
 734                 else
 735                 {
 736                         // Set live sources to run forever
 737                         mlt_properties_set_position( properties, "length", INT_MAX );
 738                         mlt_properties_set_position( properties, "out", INT_MAX - 1 );
 739                         mlt_properties_set( properties, "eof", "loop" );
 740                         mlt_properties_set_int( properties, "_length_computed", 1 );
 741                 }
 742         }
 743
 744         // Check if we're seekable
 745         // avdevices are typically AVFMT_NOFILE and not seekable
 746         self->seekable = !format->iformat || !( format->iformat->flags & AVFMT_NOFILE );
 747         if ( format->pb )
 748         {
 749                 // protocols can indicate if they support seeking
 750 #if LIBAVFORMAT_VERSION_MAJOR >= 53
 751                 self->seekable = format->pb->seekable;
 752 #else
 753                 URLContext *uc = url_fileno( format->pb );
 754                 if ( uc )
 755                         self->seekable = !uc->is_streamed;
 756 #endif
 757         }
 758         if ( self->seekable )
 759         {
 760                 // Do a more rigourous test of seekable on a disposable context
 761                 self->seekable = av_seek_frame( format, -1, format->start_time, AVSEEK_FLAG_BACKWARD ) >= 0;
 762                 mlt_properties_set_int( properties, "seekable", self->seekable );
 763                 self->dummy_context = format;
 764 #if LIBAVFORMAT_VERSION_INT > ((53<<16)+(6<<8)+0)
 765                 self->video_format = NULL;
 766                 avformat_open_input( &self->video_format, filename, NULL, NULL );
 767                 avformat_find_stream_info( self->video_format, NULL );
 768 #else
 769                 av_open_input_file( &self->video_format, filename, NULL, 0, NULL );
 770                 av_find_stream_info( self->video_format );
 771 #endif
 772                 format = self->video_format;
 773         }
 774
 775         // Fetch the width, height and aspect ratio
 776         if ( self->video_index != -1 )
 777         {
 778                 AVCodecContext *codec_context = format->streams[ self->video_index ]->codec;
 779                 mlt_properties_set_int( properties, "width", codec_context->width );
 780                 mlt_properties_set_int( properties, "height", codec_context->height );
 781
 782                 if ( codec_context->codec_id == CODEC_ID_DVVIDEO )
 783                 {
 784                         // Fetch the first frame of DV so we can read it directly
 785                         AVPacket pkt;
 786                         int ret = 0;
 787                         while ( ret >= 0 )
 788                         {
 789                                 ret = av_read_frame( format, &pkt );
 790                                 if ( ret >= 0 && pkt.stream_index == self->video_index && pkt.size > 0 )
 791                                 {
 792                                         get_aspect_ratio( properties, format->streams[ self->video_index ], codec_context, &pkt );
 793                                         av_free_packet(&pkt);
 794                                         break;
 795                                 }
 796                                 if ( ret >= 0 )
 797                                         av_free_packet(&pkt);
 798                         }
 799                 }
 800                 else
 801                 {
 802                         get_aspect_ratio( properties, format->streams[ self->video_index ], codec_context, NULL );
 803                 }
 804
 805 #ifdef SWSCALE
 806                 // Verify that we can convert this to YUV 4:2:2
 807                 // TODO: we can now also return RGB and RGBA and quite possibly more in the future.
 808                 struct SwsContext *context = sws_getContext( codec_context->width, codec_context->height, codec_context->pix_fmt,
 809                         codec_context->width, codec_context->height, PIX_FMT_YUYV422, SWS_BILINEAR, NULL, NULL, NULL);
 810                 if ( context )
 811                         sws_freeContext( context );
 812                 else
 813                         error = 1;
 814 #endif
 815         }
 816         return error;
 817 }
 818
 819 /** Open the file.
 820 */
 821
 822 static int producer_open( producer_avformat self, mlt_profile profile, const char *URL, int take_lock )
 823 {
 824         // Return an error code (0 == no error)
 825         int error = 0;
 826         mlt_properties properties = MLT_PRODUCER_PROPERTIES( self->parent );
 827
 828         // Lock the service
 829         if ( take_lock )
 830         {
 831                 pthread_mutex_init( &self->audio_mutex, NULL );
 832                 pthread_mutex_init( &self->video_mutex, NULL );
 833                 pthread_mutex_init( &self->packets_mutex, NULL );
 834                 pthread_mutex_init( &self->open_mutex, NULL );
 835                 pthread_mutex_lock( &self->audio_mutex );
 836                 pthread_mutex_lock( &self->video_mutex );
 837         }
 838         mlt_events_block( properties, self->parent );
 839
 840         // Parse URL
 841         AVInputFormat *format = NULL;
 842 #if LIBAVFORMAT_VERSION_INT > ((53<<16)+(6<<8)+0)
 843         AVDictionary *params = NULL;
 844 #else
 845         AVFormatParameters params;
 846         memset( &params, 0, sizeof(params) );
 847 #endif
 848         char *filename = parse_url( profile, URL, &format, &params );
 849
 850         // Now attempt to open the file or device with filename
 851 #if LIBAVFORMAT_VERSION_INT > ((53<<16)+(6<<8)+0)
 852         error = avformat_open_input( &self->video_format, filename, format, &params ) < 0;
 853         if ( error )
 854                 // If the URL is a network stream URL, then we probably need to open with full URL
 855                 error = avformat_open_input( &self->video_format, URL, format, &params ) < 0;
 856 #else
 857         error = av_open_input_file( &self->video_format, filename, format, 0, &params ) < 0;
 858         if ( error )
 859                 // If the URL is a network stream URL, then we probably need to open with full URL
 860                 error = av_open_input_file( &self->video_format, URL, format, 0, &params ) < 0;
 861 #endif
 862
 863         // Set MLT properties onto video AVFormatContext
 864         if ( !error && self->video_format )
 865         {
 866                 apply_properties( self->video_format, properties, AV_OPT_FLAG_DECODING_PARAM );
 867 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(110<<8)+0)
 868                 if ( self->video_format->iformat && self->video_format->iformat->priv_class && self->video_format->priv_data )
 869                         apply_properties( self->video_format->priv_data, properties, AV_OPT_FLAG_DECODING_PARAM );
 870 #endif
 871         }
 872
 873 #if LIBAVFORMAT_VERSION_INT > ((53<<16)+(6<<8)+0)
 874         av_dict_free( &params );
 875 #else
 876         // Cleanup AVFormatParameters
 877         if ( params.standard )
 878                 free( (void*) params.standard );
 879 #endif
 880
 881         // If successful, then try to get additional info
 882         if ( !error && self->video_format )
 883         {
 884                 // Get the stream info
 885 #if LIBAVFORMAT_VERSION_INT > ((53<<16)+(6<<8)+0)
 886                 error = avformat_find_stream_info( self->video_format, NULL ) < 0;
 887 #else
 888                 error = av_find_stream_info( self->video_format ) < 0;
 889 #endif
 890
 891                 // Continue if no error
 892                 if ( !error && self->video_format )
 893                 {
 894                         // Find default audio and video streams
 895                         find_default_streams( self );
 896                         error = get_basic_info( self, profile, filename );
 897
 898                         // Initialize position info
 899                         self->first_pts = AV_NOPTS_VALUE;
 900                         self->last_position = POSITION_INITIAL;
 901
 902                         if ( !self->audio_format )
 903                         {
 904                                 // We're going to cheat here - for seekable A/V files, we will have separate contexts
 905                                 // to support independent seeking of audio from video.
 906                                 // TODO: Is this really necessary?
 907                                 if ( self->audio_index != -1 && self->video_index != -1 )
 908                                 {
 909                                         if ( self->seekable )
 910                                         {
 911                                                 // And open again for our audio context
 912 #if LIBAVFORMAT_VERSION_INT > ((53<<16)+(6<<8)+0)
 913                                                 avformat_open_input( &self->audio_format, filename, NULL, NULL );
 914                                                 apply_properties( self->audio_format, properties, AV_OPT_FLAG_DECODING_PARAM );
 915                                                 if ( self->audio_format->iformat && self->audio_format->iformat->priv_class && self->audio_format->priv_data )
 916                                                         apply_properties( self->audio_format->priv_data, properties, AV_OPT_FLAG_DECODING_PARAM );
 917                                                 avformat_find_stream_info( self->audio_format, NULL );
 918 #else
 919                                                 av_open_input_file( &self->audio_format, filename, NULL, 0, NULL );
 920                                                 apply_properties( self->audio_format, properties, AV_OPT_FLAG_DECODING_PARAM );
 921 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(110<<8)+0)
 922                         if ( self->audio_format->iformat && self->audio_format->iformat->priv_class && self->audio_format->priv_data )
 923                             apply_properties( self->audio_format->priv_data, properties, AV_OPT_FLAG_DECODING_PARAM );
 924 #endif
 925                                                 av_find_stream_info( self->audio_format );
 926 #endif
 927                                         }
 928                                         else
 929                                         {
 930                                                 self->audio_format = self->video_format;
 931                                         }
 932                                 }
 933                                 else if ( self->audio_index != -1 )
 934                                 {
 935                                         // We only have an audio context
 936                                         self->audio_format = self->video_format;
 937                                         self->video_format = NULL;
 938                                 }
 939                                 else if ( self->video_index == -1 )
 940                                 {
 941                                         // Something has gone wrong
 942                                         error = -1;
 943                                 }
 944                                 if ( self->audio_format && !self->audio_streams )
 945                                         get_audio_streams_info( self );
 946                         }
 947                 }
 948         }
 949         if ( filename )
 950                 free( filename );
 951         if ( !error )
 952         {
 953                 self->apackets = mlt_deque_init();
 954                 self->vpackets = mlt_deque_init();
 955         }
 956
 957         if ( self->dummy_context )
 958         {
 959                 pthread_mutex_lock( &self->open_mutex );
 960 #if LIBAVFORMAT_VERSION_INT >= ((53<<16)+(17<<8)+0)
 961                 avformat_close_input( &self->dummy_context );
 962 #else
 963                 av_close_input_file( self->dummy_context );
 964 #endif
 965                 self->dummy_context = NULL;
 966                 pthread_mutex_unlock( &self->open_mutex );
 967         }
 968
 969         // Unlock the service
 970         if ( take_lock )
 971         {
 972                 pthread_mutex_unlock( &self->audio_mutex );
 973                 pthread_mutex_unlock( &self->video_mutex );
 974         }
 975         mlt_events_unblock( properties, self->parent );
 976
 977         return error;
 978 }
 979
 980 static void reopen_video( producer_avformat self, mlt_producer producer )
 981 {
 982         mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
 983         mlt_service_lock( MLT_PRODUCER_SERVICE( producer ) );
 984         pthread_mutex_lock( &self->audio_mutex );
 985         pthread_mutex_lock( &self->open_mutex );
 986
 987         if ( self->video_codec )
 988                 avcodec_close( self->video_codec );
 989         self->video_codec = NULL;
 990 #if LIBAVFORMAT_VERSION_INT >= ((53<<16)+(17<<8)+0)
 991         if ( self->dummy_context )
 992                 avformat_close_input( &self->dummy_context );
 993         if ( self->video_format )
 994                 avformat_close_input( &self->video_format );
 995 #else
 996         if ( self->dummy_context )
 997                 av_close_input_file( self->dummy_context );
 998         if ( self->video_format )
 999                 av_close_input_file( self->video_format );
1000 #endif
1001         self->dummy_context = NULL;
1002         self->video_format = NULL;
1003         pthread_mutex_unlock( &self->open_mutex );
1004
1005         int audio_index = self->audio_index;
1006         int video_index = self->video_index;
1007
1008         producer_open( self, mlt_service_profile( MLT_PRODUCER_SERVICE(producer) ),
1009                 mlt_properties_get( properties, "resource" ), 0 );
1010
1011         self->audio_index = audio_index;
1012         if ( self->video_format && video_index > -1 )
1013         {
1014                 self->video_index = video_index;
1015                 video_codec_init( self, video_index, properties );
1016         }
1017
1018         pthread_mutex_unlock( &self->audio_mutex );
1019         mlt_service_unlock( MLT_PRODUCER_SERVICE( producer ) );
1020 }
1021
1022 static int seek_video( producer_avformat self, mlt_position position,
1023         int64_t req_position, int preseek, int use_pts )
1024 {
1025         mlt_producer producer = self->parent;
1026         int paused = 0;
1027
1028         if ( self->seekable && ( position != self->video_expected || self->last_position < 0 ) )
1029         {
1030                 mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
1031
1032                 // Fetch the video format context
1033                 AVFormatContext *context = self->video_format;
1034
1035                 // Get the video stream
1036                 AVStream *stream = context->streams[ self->video_index ];
1037
1038                 // Get codec context
1039                 AVCodecContext *codec_context = stream->codec;
1040
1041                 // We may want to use the source fps if available
1042                 double source_fps = mlt_properties_get_double( properties, "meta.media.frame_rate_num" ) /
1043                         mlt_properties_get_double( properties, "meta.media.frame_rate_den" );
1044
1045                 // find initial PTS
1046                 if ( self->last_position == POSITION_INITIAL )
1047                 {
1048                         int ret = 0;
1049                         int toscan = 100;
1050                         AVPacket pkt;
1051
1052                         while ( ret >= 0 && toscan-- > 0 )
1053                         {
1054                                 ret = av_read_frame( context, &pkt );
1055                                 if ( ret >= 0 && pkt.stream_index == self->video_index )
1056                                 {
1057                                         mlt_log_debug( MLT_PRODUCER_SERVICE(producer),
1058                                                 "first_pts %"PRId64" dts %"PRId64" pts_dts_delta %d\n",
1059                                                 pkt.pts, pkt.dts, (int)(pkt.pts - pkt.dts) );
1060                                         self->first_pts = use_pts? pkt.pts : pkt.dts;
1061                                         if ( self->first_pts != AV_NOPTS_VALUE )
1062                                                 toscan = 0;
1063                                 }
1064                                 av_free_packet( &pkt );
1065                         }
1066                         av_seek_frame( context, -1, 0, AVSEEK_FLAG_BACKWARD );
1067                 }
1068
1069                 if ( self->av_frame && position + 1 == self->video_expected )
1070                 {
1071                         // We're paused - use last image
1072                         paused = 1;
1073                 }
1074                 else if ( self->seekable && ( position < self->video_expected || position - self->video_expected >= 12 || self->last_position < 0 ) )
1075                 {
1076                         // Calculate the timestamp for the requested frame
1077                         int64_t timestamp = req_position / ( av_q2d( stream->time_base ) * source_fps );
1078                         if ( req_position <= 0 )
1079                                 timestamp = 0;
1080                         else if ( self->first_pts != AV_NOPTS_VALUE )
1081                                 timestamp += self->first_pts;
1082                         else if ( context->start_time != AV_NOPTS_VALUE )
1083                                 timestamp += context->start_time;
1084                         if ( preseek && av_q2d( stream->time_base ) != 0 )
1085                                 timestamp -= 2 / av_q2d( stream->time_base );
1086                         if ( timestamp < 0 )
1087                                 timestamp = 0;
1088                         mlt_log_debug( MLT_PRODUCER_SERVICE(producer), "seeking timestamp %"PRId64" position %d expected %d last_pos %"PRId64"\n",
1089                                 timestamp, position, self->video_expected, self->last_position );
1090
1091                         // Seek to the timestamp
1092                         // NOTE: reopen_video is disabled at this time because it is causing trouble with A/V sync.
1093                         if ( 1 || use_pts || req_position > 0 || self->last_position <= 0 )
1094                         {
1095                                 codec_context->skip_loop_filter = AVDISCARD_NONREF;
1096                                 av_seek_frame( context, self->video_index, timestamp, AVSEEK_FLAG_BACKWARD );
1097
1098                                 // flush any pictures still in decode buffer
1099                                 avcodec_flush_buffers( codec_context );
1100                         }
1101                         else
1102                         {
1103                                 // Re-open video stream when rewinding to beginning from somewhere else.
1104                                 // This is rather ugly, and I prefer not to do it this way, but ffmpeg is
1105                                 // not reliably seeking to the first frame across formats.
1106                                 reopen_video( self, producer );
1107                         }
1108
1109                         // Remove the cached info relating to the previous position
1110                         self->current_position = POSITION_INVALID;
1111                         self->last_position = POSITION_INVALID;
1112                         av_freep( &self->av_frame );
1113                 }
1114         }
1115         return paused;
1116 }
1117
1118 /** Convert a frame position to a time code.
1119 */
1120
1121 static double producer_time_of_frame( mlt_producer producer, mlt_position position )
1122 {
1123         return ( double )position / mlt_producer_get_fps( producer );
1124 }
1125
1126 // Collect information about all audio streams
1127
1128 static void get_audio_streams_info( producer_avformat self )
1129 {
1130         // Fetch the audio format context
1131         AVFormatContext *context = self->audio_format;
1132         int i;
1133
1134         for ( i = 0;
1135                   i < context->nb_streams;
1136                   i++ )
1137         {
1138                 if ( context->streams[i]->codec->codec_type == CODEC_TYPE_AUDIO )
1139                 {
1140                         AVCodecContext *codec_context = context->streams[i]->codec;
1141                         AVCodec *codec = avcodec_find_decoder( codec_context->codec_id );
1142
1143                         // If we don't have a codec and we can't initialise it, we can't do much more...
1144                         pthread_mutex_lock( &self->open_mutex );
1145 #if LIBAVCODEC_VERSION_INT >= ((53<<16)+(8<<8)+0)
1146                         if ( codec && avcodec_open2( codec_context, codec, NULL ) >= 0 )
1147 #else
1148                         if ( codec && avcodec_open( codec_context, codec ) >= 0 )
1149 #endif
1150                         {
1151                                 self->audio_streams++;
1152                                 self->audio_max_stream = i;
1153                                 self->total_channels += codec_context->channels;
1154                                 if ( codec_context->channels > self->max_channel )
1155                                         self->max_channel = codec_context->channels;
1156                                 if ( codec_context->sample_rate > self->max_frequency )
1157                                         self->max_frequency = codec_context->sample_rate;
1158                                 avcodec_close( codec_context );
1159                         }
1160                         pthread_mutex_unlock( &self->open_mutex );
1161                 }
1162         }
1163         mlt_log_verbose( NULL, "[producer avformat] audio: total_streams %d max_stream %d total_channels %d max_channels %d\n",
1164                 self->audio_streams, self->audio_max_stream, self->total_channels, self->max_channel );
1165
1166         // Other audio-specific initializations
1167         self->resample_factor = 1.0;
1168 }
1169
1170 static void set_luma_transfer( struct SwsContext *context, int colorspace, int use_full_range )
1171 {
1172 #if defined(SWSCALE) && (LIBSWSCALE_VERSION_INT >= ((0<<16)+(7<<8)+2))
1173         int *coefficients;
1174         const int *new_coefficients;
1175         int full_range;
1176         int brightness, contrast, saturation;
1177
1178         if ( sws_getColorspaceDetails( context, &coefficients, &full_range, &coefficients, &full_range,
1179                         &brightness, &contrast, &saturation ) != -1 )
1180         {
1181                 // Don't change these from defaults unless explicitly told to.
1182                 if ( use_full_range >= 0 )
1183                         full_range = use_full_range;
1184                 switch ( colorspace )
1185                 {
1186                 case 170:
1187                 case 470:
1188                 case 601:
1189                 case 624:
1190                         new_coefficients = sws_getCoefficients( SWS_CS_ITU601 );
1191                         break;
1192                 case 240:
1193                         new_coefficients = sws_getCoefficients( SWS_CS_SMPTE240M );
1194                         break;
1195                 case 709:
1196                         new_coefficients = sws_getCoefficients( SWS_CS_ITU709 );
1197                         break;
1198                 default:
1199                         new_coefficients = coefficients;
1200                         break;
1201                 }
1202                 sws_setColorspaceDetails( context, new_coefficients, full_range, new_coefficients, full_range,
1203                         brightness, contrast, saturation );
1204         }
1205 #endif
1206 }
1207
1208 static mlt_image_format pick_format( enum PixelFormat pix_fmt )
1209 {
1210         switch ( pix_fmt )
1211         {
1212         case PIX_FMT_ARGB:
1213         case PIX_FMT_RGBA:
1214         case PIX_FMT_ABGR:
1215         case PIX_FMT_BGRA:
1216                 return mlt_image_rgb24a;
1217         case PIX_FMT_YUV420P:
1218         case PIX_FMT_YUVJ420P:
1219         case PIX_FMT_YUVA420P:
1220                 return mlt_image_yuv420p;
1221         case PIX_FMT_RGB24:
1222         case PIX_FMT_BGR24:
1223         case PIX_FMT_GRAY8:
1224         case PIX_FMT_MONOWHITE:
1225         case PIX_FMT_MONOBLACK:
1226         case PIX_FMT_RGB8:
1227         case PIX_FMT_BGR8:
1228                 return mlt_image_rgb24;
1229         default:
1230                 return mlt_image_yuv422;
1231         }
1232 }
1233
1234 static void convert_image( AVFrame *frame, uint8_t *buffer, int pix_fmt,
1235         mlt_image_format *format, int width, int height, int colorspace, uint8_t **alpha )
1236 {
1237 #ifdef SWSCALE
1238         int full_range = -1;
1239         int flags = SWS_BICUBIC | SWS_ACCURATE_RND;
1240
1241 #ifdef USE_MMX
1242         flags |= SWS_CPU_CAPS_MMX;
1243 #endif
1244 #ifdef USE_SSE
1245         flags |= SWS_CPU_CAPS_MMX2;
1246 #endif
1247
1248         // extract alpha from planar formats
1249         if ( ( pix_fmt == PIX_FMT_YUVA420P
1250 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(35<<8)+101)
1251                         || pix_fmt == PIX_FMT_YUVA444P
1252 #endif
1253                         ) &&
1254                 *format != mlt_image_rgb24a && *format != mlt_image_opengl &&
1255                 frame->data[3] && frame->linesize[3] )
1256         {
1257                 int i;
1258                 uint8_t *src, *dst;
1259
1260                 dst = *alpha = mlt_pool_alloc( width * height );
1261                 src = frame->data[3];
1262
1263                 for ( i = 0; i < height; dst += width, src += frame->linesize[3], i++ )
1264                         memcpy( dst, src, FFMIN( width, frame->linesize[3] ) );
1265         }
1266
1267         if ( *format == mlt_image_yuv420p )
1268         {
1269                 struct SwsContext *context = sws_getContext( width, height, pix_fmt,
1270                         width, height, PIX_FMT_YUV420P, flags, NULL, NULL, NULL);
1271                 AVPicture output;
1272                 output.data[0] = buffer;
1273                 output.data[1] = buffer + width * height;
1274                 output.data[2] = buffer + ( 5 * width * height ) / 4;
1275                 output.linesize[0] = width;
1276                 output.linesize[1] = width >> 1;
1277                 output.linesize[2] = width >> 1;
1278                 set_luma_transfer( context, colorspace, full_range );
1279                 sws_scale( context, (const uint8_t* const*) frame->data, frame->linesize, 0, height,
1280                         output.data, output.linesize);
1281                 sws_freeContext( context );
1282         }
1283         else if ( *format == mlt_image_rgb24 )
1284         {
1285                 struct SwsContext *context = sws_getContext( width, height, pix_fmt,
1286                         width, height, PIX_FMT_RGB24, flags | SWS_FULL_CHR_H_INT, NULL, NULL, NULL);
1287                 AVPicture output;
1288                 avpicture_fill( &output, buffer, PIX_FMT_RGB24, width, height );
1289                 set_luma_transfer( context, colorspace, full_range );
1290                 sws_scale( context, (const uint8_t* const*) frame->data, frame->linesize, 0, height,
1291                         output.data, output.linesize);
1292                 sws_freeContext( context );
1293         }
1294         else if ( *format == mlt_image_rgb24a || *format == mlt_image_opengl )
1295         {
1296                 struct SwsContext *context = sws_getContext( width, height, pix_fmt,
1297                         width, height, PIX_FMT_RGBA, flags | SWS_FULL_CHR_H_INT, NULL, NULL, NULL);
1298                 AVPicture output;
1299                 avpicture_fill( &output, buffer, PIX_FMT_RGBA, width, height );
1300                 set_luma_transfer( context, colorspace, full_range );
1301                 sws_scale( context, (const uint8_t* const*) frame->data, frame->linesize, 0, height,
1302                         output.data, output.linesize);
1303                 sws_freeContext( context );
1304         }
1305         else
1306         {
1307                 struct SwsContext *context = sws_getContext( width, height, pix_fmt,
1308                         width, height, PIX_FMT_YUYV422, flags | SWS_FULL_CHR_H_INP, NULL, NULL, NULL);
1309                 AVPicture output;
1310                 avpicture_fill( &output, buffer, PIX_FMT_YUYV422, width, height );
1311                 set_luma_transfer( context, colorspace, full_range );
1312                 sws_scale( context, (const uint8_t* const*) frame->data, frame->linesize, 0, height,
1313                         output.data, output.linesize);
1314                 sws_freeContext( context );
1315         }
1316 #else
1317         if ( *format == mlt_image_yuv420p )
1318         {
1319                 AVPicture pict;
1320                 pict.data[0] = buffer;
1321                 pict.data[1] = buffer + width * height;
1322                 pict.data[2] = buffer + ( 5 * width * height ) / 4;
1323                 pict.linesize[0] = width;
1324                 pict.linesize[1] = width >> 1;
1325                 pict.linesize[2] = width >> 1;
1326                 img_convert( &pict, PIX_FMT_YUV420P, (AVPicture *)frame, pix_fmt, width, height );
1327         }
1328         else if ( *format == mlt_image_rgb24 )
1329         {
1330                 AVPicture output;
1331                 avpicture_fill( &output, buffer, PIX_FMT_RGB24, width, height );
1332                 img_convert( &output, PIX_FMT_RGB24, (AVPicture *)frame, pix_fmt, width, height );
1333         }
1334         else if ( format == mlt_image_rgb24a || format == mlt_image_opengl )
1335         {
1336                 AVPicture output;
1337                 avpicture_fill( &output, buffer, PIX_FMT_RGB32, width, height );
1338                 img_convert( &output, PIX_FMT_RGB32, (AVPicture *)frame, pix_fmt, width, height );
1339         }
1340         else
1341         {
1342                 AVPicture output;
1343                 avpicture_fill( &output, buffer, PIX_FMT_YUYV422, width, height );
1344                 img_convert( &output, PIX_FMT_YUYV422, (AVPicture *)frame, pix_fmt, width, height );
1345         }
1346 #endif
1347 }
1348
1349 /** Allocate the image buffer and set it on the frame.
1350 */
1351
1352 static int allocate_buffer( mlt_frame frame, AVCodecContext *codec_context, uint8_t **buffer, mlt_image_format *format, int *width, int *height )
1353 {
1354         int size = 0;
1355
1356         if ( codec_context->width == 0 || codec_context->height == 0 )
1357                 return size;
1358         *width = codec_context->width;
1359         *height = codec_context->height;
1360         size = mlt_image_format_size( *format, *width, *height, NULL );
1361         *buffer = mlt_pool_alloc( size );
1362         if ( *buffer )
1363                 mlt_frame_set_image( frame, *buffer, size, mlt_pool_release );
1364         else
1365                 size = 0;
1366
1367         return size;
1368 }
1369
1370 /** Get an image from a frame.
1371 */
1372
1373 static int producer_get_image( mlt_frame frame, uint8_t **buffer, mlt_image_format *format, int *width, int *height, int writable )
1374 {
1375         // Get the producer
1376         producer_avformat self = mlt_frame_pop_service( frame );
1377         mlt_producer producer = self->parent;
1378
1379         // Get the properties from the frame
1380         mlt_properties frame_properties = MLT_FRAME_PROPERTIES( frame );
1381
1382         // Obtain the frame number of this frame
1383         mlt_position position = mlt_properties_get_position( frame_properties, "avformat_position" );
1384
1385         // Get the producer properties
1386         mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
1387
1388         pthread_mutex_lock( &self->video_mutex );
1389
1390         // Fetch the video format context
1391         AVFormatContext *context = self->video_format;
1392
1393         // Get the video stream
1394         AVStream *stream = context->streams[ self->video_index ];
1395
1396         // Get codec context
1397         AVCodecContext *codec_context = stream->codec;
1398
1399         uint8_t *alpha = NULL;
1400         int got_picture = 0;
1401         int image_size = 0;
1402
1403         // Get the image cache
1404         if ( ! self->image_cache && ! mlt_properties_get_int( properties, "noimagecache" ) )
1405         {
1406                 self->image_cache = mlt_cache_init();
1407         }
1408         if ( self->image_cache )
1409         {
1410                 mlt_frame original = mlt_cache_get_frame( self->image_cache, mlt_frame_get_position( frame ) );
1411                 if ( original )
1412                 {
1413                         mlt_properties orig_props = MLT_FRAME_PROPERTIES( original );
1414                         int size = 0;
1415
1416                         *buffer = mlt_properties_get_data( orig_props, "alpha", &size );
1417                         if (*buffer)
1418                                 mlt_frame_set_alpha( frame, *buffer, size, NULL );
1419                         *buffer = mlt_properties_get_data( orig_props, "image", &size );
1420                         mlt_frame_set_image( frame, *buffer, size, NULL );
1421                         mlt_properties_set_data( frame_properties, "avformat.image_cache", original, 0, (mlt_destructor) mlt_frame_close, NULL );
1422                         *format = mlt_properties_get_int( orig_props, "format" );
1423
1424                         // Set the resolution
1425                         *width = codec_context->width;
1426                         *height = codec_context->height;
1427
1428                         // Workaround 1088 encodings missing cropping info.
1429                         if ( *height == 1088 && mlt_profile_dar( mlt_service_profile( MLT_PRODUCER_SERVICE( producer ) ) ) == 16.0/9.0 )
1430                                 *height = 1080;
1431
1432                         got_picture = 1;
1433                         goto exit_get_image;
1434                 }
1435         }
1436         // Cache miss
1437
1438         // Packet
1439         AVPacket pkt;
1440
1441         // We may want to use the source fps if available
1442         double source_fps = mlt_properties_get_double( properties, "meta.media.frame_rate_num" ) /
1443                 mlt_properties_get_double( properties, "meta.media.frame_rate_den" );
1444
1445         // This is the physical frame position in the source
1446         int64_t req_position = ( int64_t )( position / mlt_producer_get_fps( producer ) * source_fps + 0.5 );
1447
1448         // Determines if we have to decode all frames in a sequence
1449         // Temporary hack to improve intra frame only
1450         int must_decode = !( codec_context->codec && codec_context->codec->name ) || (
1451                                   strcmp( codec_context->codec->name, "dnxhd" ) &&
1452                                   strcmp( codec_context->codec->name, "dvvideo" ) &&
1453                                   strcmp( codec_context->codec->name, "huffyuv" ) &&
1454                                   strcmp( codec_context->codec->name, "mjpeg" ) &&
1455                                   strcmp( codec_context->codec->name, "rawvideo" ) );
1456
1457         // Turn on usage of new seek API and PTS for seeking
1458         int use_pts = self->seekable &&
1459                 codec_context->codec_id == CODEC_ID_H264 && codec_context->has_b_frames;
1460         if ( mlt_properties_get( properties, "use_pts" ) )
1461                 use_pts = mlt_properties_get_int( properties, "use_pts" );
1462         double delay = mlt_properties_get_double( properties, "video_delay" );
1463
1464         // Seek if necessary
1465         const char *interp = mlt_properties_get( frame_properties, "rescale.interp" );
1466         int preseek = must_decode
1467 #if defined(FFUDIV) && LIBAVFORMAT_VERSION_INT >= ((53<<16)+(24<<8)+2)
1468                 && ( !use_pts || ( interp && strcmp( interp, "nearest" ) ) )
1469 #endif
1470                 && codec_context->has_b_frames;
1471         int paused = seek_video( self, position, req_position, preseek, use_pts );
1472
1473         // Seek might have reopened the file
1474         context = self->video_format;
1475         stream = context->streams[ self->video_index ];
1476         codec_context = stream->codec;
1477         if ( *format == mlt_image_none ||
1478                         codec_context->pix_fmt == PIX_FMT_ARGB ||
1479                         codec_context->pix_fmt == PIX_FMT_RGBA ||
1480                         codec_context->pix_fmt == PIX_FMT_ABGR ||
1481                         codec_context->pix_fmt == PIX_FMT_BGRA )
1482                 *format = pick_format( codec_context->pix_fmt );
1483
1484         // Duplicate the last image if necessary
1485         if ( self->av_frame && self->av_frame->linesize[0]
1486                  && ( paused || self->current_position >= req_position ) )
1487         {
1488                 // Duplicate it
1489                 if ( ( image_size = allocate_buffer( frame, codec_context, buffer, format, width, height ) ) )
1490                 {
1491                         // Workaround 1088 encodings missing cropping info.
1492                         if ( *height == 1088 && mlt_profile_dar( mlt_service_profile( MLT_PRODUCER_SERVICE( producer ) ) ) == 16.0/9.0 )
1493                                 *height = 1080;
1494 #ifdef VDPAU
1495                         if ( self->vdpau && self->vdpau->buffer )
1496                         {
1497                                 AVPicture picture;
1498                                 picture.data[0] = self->vdpau->buffer;
1499                                 picture.data[2] = self->vdpau->buffer + codec_context->width * codec_context->height;
1500                                 picture.data[1] = self->vdpau->buffer + codec_context->width * codec_context->height * 5 / 4;
1501                                 picture.linesize[0] = codec_context->width;
1502                                 picture.linesize[1] = codec_context->width / 2;
1503                                 picture.linesize[2] = codec_context->width / 2;
1504                                 convert_image( (AVFrame*) &picture, *buffer,
1505                                         PIX_FMT_YUV420P, format, *width, *height, self->colorspace, &alpha );
1506                         }
1507                         else
1508 #endif
1509                         convert_image( self->av_frame, *buffer, codec_context->pix_fmt,
1510                                 format, *width, *height, self->colorspace, &alpha );
1511                         got_picture = 1;
1512                 }
1513         }
1514         else
1515         {
1516                 int ret = 0;
1517                 int64_t int_position = 0;
1518                 int decode_errors = 0;
1519
1520                 av_init_packet( &pkt );
1521
1522                 // Construct an AVFrame for YUV422 conversion
1523                 if ( !self->av_frame )
1524                         self->av_frame = avcodec_alloc_frame( );
1525
1526                 while( ret >= 0 && !got_picture )
1527                 {
1528                         // Read a packet
1529                         pthread_mutex_lock( &self->packets_mutex );
1530                         if ( mlt_deque_count( self->vpackets ) )
1531                         {
1532                                 AVPacket *tmp = (AVPacket*) mlt_deque_pop_front( self->vpackets );
1533                                 pkt = *tmp;
1534                                 free( tmp );
1535                         }
1536                         else
1537                         {
1538                                 ret = av_read_frame( context, &pkt );
1539                                 if ( ret >= 0 && !self->seekable && pkt.stream_index == self->audio_index )
1540                                 {
1541                                         if ( !av_dup_packet( &pkt ) )
1542                                         {
1543                                                 AVPacket *tmp = malloc( sizeof(AVPacket) );
1544                                                 *tmp = pkt;
1545                                                 mlt_deque_push_back( self->apackets, tmp );
1546                                         }
1547                                 }
1548                         }
1549                         pthread_mutex_unlock( &self->packets_mutex );
1550
1551                         // We only deal with video from the selected video_index
1552                         if ( ret >= 0 && pkt.stream_index == self->video_index && pkt.size > 0 )
1553                         {
1554                                 // Determine time code of the packet
1555                                 if ( use_pts && pkt.pts == AV_NOPTS_VALUE )
1556                                 {
1557                                         self->invalid_pts_counter++;
1558                                         if ( self->invalid_pts_counter > 20 )
1559                                         {
1560                                                 mlt_log_warning( MLT_PRODUCER_SERVICE(producer), "PTS invalid; using DTS instead\n" );
1561                                                 mlt_properties_set_int( properties, "use_pts", 0 );
1562                                                 use_pts = 0;
1563                                         }
1564                                 }
1565                                 else
1566                                 {
1567                                         self->invalid_pts_counter = 0;
1568                                 }
1569                                 int64_t pts = ( use_pts && pkt.pts != AV_NOPTS_VALUE )? pkt.pts : pkt.dts;
1570                                 if ( pts != AV_NOPTS_VALUE )
1571                                 {
1572                                         if ( !self->seekable && self->first_pts == AV_NOPTS_VALUE )
1573                                                 self->first_pts = pts;
1574                                         if ( self->first_pts != AV_NOPTS_VALUE )
1575                                                 pts -= self->first_pts;
1576                                         else if ( context->start_time != AV_NOPTS_VALUE )
1577                                                 pts -= context->start_time;
1578                                         int_position = ( int64_t )( ( av_q2d( stream->time_base ) * pts + delay ) * source_fps + 0.5 );
1579                                         if ( int_position == self->last_position )
1580                                                 int_position = self->last_position + 1;
1581                                 }
1582                                 mlt_log_debug( MLT_PRODUCER_SERVICE(producer),
1583                                         "V pkt.pts %"PRId64" pkt.dts %"PRId64" req_pos %"PRId64" cur_pos %"PRId64" pkt_pos %"PRId64"\n",
1584                                         pkt.pts, pkt.dts, req_position, self->current_position, int_position );
1585
1586                                 // Make a dumb assumption on streams that contain wild timestamps
1587                                 if ( abs( req_position - int_position ) > 999 )
1588                                 {
1589                                         int_position = req_position;
1590                                         mlt_log_warning( MLT_PRODUCER_SERVICE(producer), " WILD TIMESTAMP!\n" );
1591                                 }
1592                                 self->last_position = int_position;
1593
1594                                 // Decode the image
1595                                 if ( must_decode || int_position >= req_position )
1596                                 {
1597 #ifdef VDPAU
1598                                         if ( self->vdpau )
1599                                         {
1600                                                 if ( self->vdpau->decoder == VDP_INVALID_HANDLE )
1601                                                 {
1602                                                         vdpau_decoder_init( self );
1603                                                 }
1604                                                 self->vdpau->is_decoded = 0;
1605                                         }
1606 #endif
1607                                         codec_context->reordered_opaque = int_position;
1608                                         if ( int_position >= req_position )
1609                                                 codec_context->skip_loop_filter = AVDISCARD_NONE;
1610 #if (LIBAVCODEC_VERSION_INT >= ((52<<16)+(26<<8)+0))
1611                                         ret = avcodec_decode_video2( codec_context, self->av_frame, &got_picture, &pkt );
1612 #else
1613                                         ret = avcodec_decode_video( codec_context, self->av_frame, &got_picture, pkt.data, pkt.size );
1614 #endif
1615                                         // Note: decode may fail at the beginning of MPEGfile (B-frames referencing before first I-frame), so allow a few errors.
1616                                         if ( ret < 0 )
1617                                         {
1618                                                 if ( ++decode_errors <= 10 )
1619                                                         ret = 0;
1620                                         }
1621                                         else
1622                                         {
1623                                                 decode_errors = 0;
1624                                         }
1625                                 }
1626
1627                                 if ( got_picture )
1628                                 {
1629                                         if ( use_pts )
1630                                                 // Get position of reordered frame
1631                                                 int_position = self->av_frame->reordered_opaque;
1632
1633                                         if ( int_position < req_position )
1634                                                 got_picture = 0;
1635                                         else if ( int_position >= req_position )
1636                                                 codec_context->skip_loop_filter = AVDISCARD_NONE;
1637                                 }
1638                                 mlt_log_debug( MLT_PRODUCER_SERVICE(producer), " got_pic %d key %d\n", got_picture, pkt.flags & PKT_FLAG_KEY );
1639                         }
1640
1641                         // Now handle the picture if we have one
1642                         if ( got_picture )
1643                         {
1644                                 if ( ( image_size = allocate_buffer( frame, codec_context, buffer, format, width, height ) ) )
1645                                 {
1646                                         // Workaround 1088 encodings missing cropping info.
1647                                         if ( *height == 1088 && mlt_profile_dar( mlt_service_profile( MLT_PRODUCER_SERVICE( producer ) ) ) == 16.0/9.0 )
1648                                                 *height = 1080;
1649 #ifdef VDPAU
1650                                         if ( self->vdpau )
1651                                         {
1652                                                 if ( self->vdpau->is_decoded )
1653                                                 {
1654                                                         struct vdpau_render_state *render = (struct vdpau_render_state*) self->av_frame->data[0];
1655                                                         void *planes[3];
1656                                                         uint32_t pitches[3];
1657                                                         VdpYCbCrFormat dest_format = VDP_YCBCR_FORMAT_YV12;
1658
1659                                                         if ( !self->vdpau->buffer )
1660                                                                 self->vdpau->buffer = mlt_pool_alloc( codec_context->width * codec_context->height * 3 / 2 );
1661                                                         self->av_frame->data[0] = planes[0] = self->vdpau->buffer;
1662                                                         self->av_frame->data[2] = planes[1] = self->vdpau->buffer + codec_context->width * codec_context->height;
1663                                                         self->av_frame->data[1] = planes[2] = self->vdpau->buffer + codec_context->width * codec_context->height * 5 / 4;
1664                                                         self->av_frame->linesize[0] = pitches[0] = codec_context->width;
1665                                                         self->av_frame->linesize[1] = pitches[1] = codec_context->width / 2;
1666                                                         self->av_frame->linesize[2] = pitches[2] = codec_context->width / 2;
1667
1668                                                         VdpStatus status = vdp_surface_get_bits( render->surface, dest_format, planes, pitches );
1669                                                         if ( status == VDP_STATUS_OK )
1670                                                         {
1671                                                                 convert_image( self->av_frame, *buffer, PIX_FMT_YUV420P,
1672                                                                         format, *width, *height, self->colorspace, &alpha );
1673                                                         }
1674                                                         else
1675                                                         {
1676                                                                 mlt_log_error( MLT_PRODUCER_SERVICE(producer), "VDPAU Error: %s\n", vdp_get_error_string( status ) );
1677                                                                 image_size = self->vdpau->is_decoded = 0;
1678                                                         }
1679                                                 }
1680                                                 else
1681                                                 {
1682                                                         mlt_log_error( MLT_PRODUCER_SERVICE(producer), "VDPAU error in VdpDecoderRender\n" );
1683                                                         image_size = got_picture = 0;
1684                                                 }
1685                                         }
1686                                         else
1687 #endif
1688                                         convert_image( self->av_frame, *buffer, codec_context->pix_fmt,
1689                                                 format, *width, *height, self->colorspace, &alpha );
1690                                         self->top_field_first |= self->av_frame->top_field_first;
1691                                         self->current_position = int_position;
1692                                 }
1693                                 else
1694                                 {
1695                                         got_picture = 0;
1696                                 }
1697                         }
1698                         if ( self->seekable || pkt.stream_index != self->audio_index )
1699                                 av_free_packet( &pkt );
1700                 }
1701         }
1702
1703         // set alpha
1704         if ( alpha )
1705                 mlt_frame_set_alpha( frame, alpha, (*width) * (*height), mlt_pool_release );
1706
1707         if ( image_size > 0 && self->image_cache )
1708         {
1709                 mlt_properties_set_int( frame_properties, "format", *format );
1710                 mlt_cache_put_frame( self->image_cache, frame );
1711         }
1712
1713         // Try to duplicate last image if there was a decoding failure
1714         // TODO: with multithread decoding a partial frame decoding resulting
1715         // in failure also resets av_frame making test below fail.
1716         if ( !image_size && self->av_frame && self->av_frame->linesize[0] )
1717         {
1718                 // Duplicate it
1719                 if ( ( image_size = allocate_buffer( frame, codec_context, buffer, format, width, height ) ) )
1720                 {
1721                         // Workaround 1088 encodings missing cropping info.
1722                         if ( *height == 1088 && mlt_profile_dar( mlt_service_profile( MLT_PRODUCER_SERVICE( producer ) ) ) == 16.0/9.0 )
1723                                 *height = 1080;
1724 #ifdef VDPAU
1725                         if ( self->vdpau && self->vdpau->buffer )
1726                         {
1727                                 AVPicture picture;
1728                                 picture.data[0] = self->vdpau->buffer;
1729                                 picture.data[2] = self->vdpau->buffer + codec_context->width * codec_context->height;
1730                                 picture.data[1] = self->vdpau->buffer + codec_context->width * codec_context->height * 5 / 4;
1731                                 picture.linesize[0] = codec_context->width;
1732                                 picture.linesize[1] = codec_context->width / 2;
1733                                 picture.linesize[2] = codec_context->width / 2;
1734                                 convert_image( (AVFrame*) &picture, *buffer,
1735                                         PIX_FMT_YUV420P, format, *width, *height, self->colorspace, &alpha );
1736                         }
1737                         else
1738 #endif
1739                         convert_image( self->av_frame, *buffer, codec_context->pix_fmt,
1740                                 format, *width, *height, self->colorspace, &alpha );
1741                         got_picture = 1;
1742                 }
1743         }
1744
1745         // Regardless of speed, we expect to get the next frame (cos we ain't too bright)
1746         self->video_expected = position + 1;
1747
1748 exit_get_image:
1749
1750         pthread_mutex_unlock( &self->video_mutex );
1751
1752         // Set the progressive flag
1753         if ( mlt_properties_get( properties, "force_progressive" ) )
1754                 mlt_properties_set_int( frame_properties, "progressive", !!mlt_properties_get_int( properties, "force_progressive" ) );
1755         else if ( self->av_frame )
1756                 mlt_properties_set_int( frame_properties, "progressive", !self->av_frame->interlaced_frame );
1757
1758         // Set the field order property for this frame
1759         if ( mlt_properties_get( properties, "force_tff" ) )
1760                 mlt_properties_set_int( frame_properties, "top_field_first", !!mlt_properties_get_int( properties, "force_tff" ) );
1761         else
1762                 mlt_properties_set_int( frame_properties, "top_field_first", self->top_field_first );
1763
1764         // Set immutable properties of the selected track's (or overridden) source attributes.
1765         mlt_service_lock( MLT_PRODUCER_SERVICE( producer ) );
1766         mlt_properties_set_int( properties, "meta.media.top_field_first", self->top_field_first );
1767         mlt_properties_set_int( properties, "meta.media.progressive", mlt_properties_get_int( frame_properties, "progressive" ) );
1768         mlt_service_unlock( MLT_PRODUCER_SERVICE( producer ) );
1769
1770         return !got_picture;
1771 }
1772
1773 /** Process properties as AVOptions and apply to AV context obj
1774 */
1775
1776 static void apply_properties( void *obj, mlt_properties properties, int flags )
1777 {
1778         int i;
1779         int count = mlt_properties_count( properties );
1780         for ( i = 0; i < count; i++ )
1781         {
1782                 const char *opt_name = mlt_properties_get_name( properties, i );
1783 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(10<<8)+0)
1784                 const AVOption *opt = av_opt_find( obj, opt_name, NULL, flags, flags );
1785 #else
1786                 const AVOption *opt = av_find_opt( obj, opt_name, NULL, flags, flags );
1787 #endif
1788                 if ( opt_name && mlt_properties_get( properties, opt_name ) )
1789                 {
1790                         if ( opt )
1791 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(12<<8)+0)
1792                                 av_opt_set( obj, opt_name, mlt_properties_get( properties, opt_name), 0 );
1793 #elif LIBAVCODEC_VERSION_INT >= ((52<<16)+(7<<8)+0)
1794                                 av_set_string3( obj, opt_name, mlt_properties_get( properties, opt_name), 0, NULL );
1795 #elif LIBAVCODEC_VERSION_INT >= ((51<<16)+(59<<8)+0)
1796                                 av_set_string2( obj, opt_name, mlt_properties_get( properties, opt_name), 0 );
1797 #else
1798                                 av_set_string( obj, opt_name, mlt_properties_get( properties, opt_name) );
1799 #endif
1800                 }
1801         }
1802 }
1803
1804 /** Initialize the video codec context.
1805  */
1806
1807 static int video_codec_init( producer_avformat self, int index, mlt_properties properties )
1808 {
1809         // Initialise the codec if necessary
1810         if ( !self->video_codec )
1811         {
1812                 // Get the video stream
1813                 AVStream *stream = self->video_format->streams[ index ];
1814
1815                 // Get codec context
1816                 AVCodecContext *codec_context = stream->codec;
1817
1818                 // Find the codec
1819                 AVCodec *codec = avcodec_find_decoder( codec_context->codec_id );
1820 #ifdef VDPAU
1821                 if ( codec_context->codec_id == CODEC_ID_H264 )
1822                 {
1823                         if ( ( codec = avcodec_find_decoder_by_name( "h264_vdpau" ) ) )
1824                         {
1825                                 if ( vdpau_init( self ) )
1826                                 {
1827                                         self->video_codec = codec_context;
1828                                         if ( !vdpau_decoder_init( self ) )
1829                                                 vdpau_fini( self );
1830                                 }
1831                         }
1832                         if ( !self->vdpau )
1833                                 codec = avcodec_find_decoder( codec_context->codec_id );
1834                 }
1835 #endif
1836
1837                 // Initialise multi-threading
1838                 int thread_count = mlt_properties_get_int( properties, "threads" );
1839                 if ( thread_count == 0 && getenv( "MLT_AVFORMAT_THREADS" ) )
1840                         thread_count = atoi( getenv( "MLT_AVFORMAT_THREADS" ) );
1841                 if ( thread_count > 1 )
1842                         codec_context->thread_count = thread_count;
1843
1844                 // If we don't have a codec and we can't initialise it, we can't do much more...
1845                 pthread_mutex_lock( &self->open_mutex );
1846 #if LIBAVCODEC_VERSION_INT >= ((53<<16)+(8<<8)+0)
1847                 if ( codec && avcodec_open2( codec_context, codec, NULL ) >= 0 )
1848 #else
1849                 if ( codec && avcodec_open( codec_context, codec ) >= 0 )
1850 #endif
1851                 {
1852                         // Now store the codec with its destructor
1853                         self->video_codec = codec_context;
1854                 }
1855                 else
1856                 {
1857                         // Remember that we can't use this later
1858                         self->video_index = -1;
1859                         pthread_mutex_unlock( &self->open_mutex );
1860                         return 0;
1861                 }
1862                 pthread_mutex_unlock( &self->open_mutex );
1863
1864                 // Process properties as AVOptions
1865                 apply_properties( codec_context, properties, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM );
1866 #if LIBAVCODEC_VERSION_INT >= ((52<<16)+(122<<8)+0)
1867                 if ( codec->priv_class && codec_context->priv_data )
1868                         apply_properties( codec_context->priv_data, properties, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM );
1869 #endif
1870
1871                 // Reset some image properties
1872                 mlt_properties_set_int( properties, "width", self->video_codec->width );
1873                 mlt_properties_set_int( properties, "height", self->video_codec->height );
1874                 // For DV, we'll just use the saved aspect ratio
1875                 if ( codec_context->codec_id != CODEC_ID_DVVIDEO )
1876                         get_aspect_ratio( properties, stream, self->video_codec, NULL );
1877
1878                 // Determine the fps first from the codec
1879                 double source_fps = (double) self->video_codec->time_base.den /
1880                                                                    ( self->video_codec->time_base.num == 0 ? 1 : self->video_codec->time_base.num );
1881
1882                 if ( mlt_properties_get( properties, "force_fps" ) )
1883                 {
1884                         source_fps = mlt_properties_get_double( properties, "force_fps" );
1885                         stream->time_base = av_d2q( source_fps, 1024 );
1886                         mlt_properties_set_int( properties, "meta.media.frame_rate_num", stream->time_base.num );
1887                         mlt_properties_set_int( properties, "meta.media.frame_rate_den", stream->time_base.den );
1888                 }
1889                 else
1890                 {
1891                         // If the muxer reports a frame rate different than the codec
1892 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(42<<8)+0)
1893                         double muxer_fps = av_q2d( stream->avg_frame_rate );
1894                         if ( isnan( muxer_fps ) || muxer_fps == 0 )
1895                                 muxer_fps = av_q2d( stream->r_frame_rate );
1896 #else
1897                         double muxer_fps = av_q2d( stream->r_frame_rate );
1898 #endif
1899                         // Choose the lesser - the wrong tends to be off by some multiple of 10
1900                         source_fps = FFMIN( source_fps, muxer_fps );
1901                         if ( source_fps >= 1.0 && ( source_fps < muxer_fps || isnan( muxer_fps ) ) )
1902                         {
1903                                 mlt_properties_set_int( properties, "meta.media.frame_rate_num", self->video_codec->time_base.den );
1904                                 mlt_properties_set_int( properties, "meta.media.frame_rate_den", self->video_codec->time_base.num == 0 ? 1 : self->video_codec->time_base.num );
1905                         }
1906                         else if ( muxer_fps > 0 )
1907                         {
1908                                 AVRational frame_rate = stream->r_frame_rate;
1909                                 // With my samples when r_frame_rate != 1000 but avg_frame_rate is valid,
1910                                 // avg_frame_rate gives some approximate value that does not well match the media.
1911                                 // Also, on my sample where r_frame_rate = 1000, using avg_frame_rate directly
1912                                 // results in some very choppy output, but some value slightly different works
1913                                 // great.
1914 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(42<<8)+0)
1915                                 if ( av_q2d( stream->r_frame_rate ) >= 1000 && av_q2d( stream->avg_frame_rate ) > 0 )
1916                                         frame_rate = av_d2q( av_q2d( stream->avg_frame_rate ), 1024 );
1917 #endif
1918                                 mlt_properties_set_int( properties, "meta.media.frame_rate_num", frame_rate.num );
1919                                 mlt_properties_set_int( properties, "meta.media.frame_rate_den", frame_rate.den );
1920                         }
1921                         else
1922                         {
1923                                 source_fps = mlt_producer_get_fps( self->parent );
1924                                 AVRational frame_rate = av_d2q( source_fps, 255 );
1925                                 mlt_properties_set_int( properties, "meta.media.frame_rate_num", frame_rate.num );
1926                                 mlt_properties_set_int( properties, "meta.media.frame_rate_den", frame_rate.den );
1927                         }
1928                 }
1929
1930                 // Set the YUV colorspace from override or detect
1931                 self->colorspace = mlt_properties_get_int( properties, "force_colorspace" );
1932 #if LIBAVCODEC_VERSION_INT > ((52<<16)+(28<<8)+0)
1933                 if ( ! self->colorspace )
1934                 {
1935                         switch ( self->video_codec->colorspace )
1936                         {
1937                         case AVCOL_SPC_SMPTE240M:
1938                                 self->colorspace = 240;
1939                                 break;
1940                         case AVCOL_SPC_BT470BG:
1941                         case AVCOL_SPC_SMPTE170M:
1942                                 self->colorspace = 601;
1943                                 break;
1944                         case AVCOL_SPC_BT709:
1945                                 self->colorspace = 709;
1946                                 break;
1947                         default:
1948                                 // This is a heuristic Charles Poynton suggests in "Digital Video and HDTV"
1949                                 self->colorspace = self->video_codec->width * self->video_codec->height > 750000 ? 709 : 601;
1950                                 break;
1951                         }
1952                 }
1953 #endif
1954                 // Let apps get chosen colorspace
1955                 mlt_properties_set_int( properties, "meta.media.colorspace", self->colorspace );
1956         }
1957         return self->video_codec && self->video_index > -1;
1958 }
1959
1960 /** Set up video handling.
1961 */
1962
1963 static void producer_set_up_video( producer_avformat self, mlt_frame frame )
1964 {
1965         // Get the producer
1966         mlt_producer producer = self->parent;
1967
1968         // Get the properties
1969         mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
1970
1971         // Fetch the video format context
1972         AVFormatContext *context = self->video_format;
1973
1974         // Get the video_index
1975         int index = mlt_properties_get_int( properties, "video_index" );
1976
1977         // Reopen the file if necessary
1978         if ( !context && index > -1 )
1979         {
1980                 producer_open( self, mlt_service_profile( MLT_PRODUCER_SERVICE(producer) ),
1981                         mlt_properties_get( properties, "resource" ), 1 );
1982                 context = self->video_format;
1983         }
1984
1985         // Exception handling for video_index
1986         if ( context && index >= (int) context->nb_streams )
1987         {
1988                 // Get the last video stream
1989                 for ( index = context->nb_streams - 1;
1990                           index >= 0 && context->streams[ index ]->codec->codec_type != CODEC_TYPE_VIDEO;
1991                           index-- );
1992                 mlt_properties_set_int( properties, "video_index", index );
1993         }
1994         if ( context && index > -1 && context->streams[ index ]->codec->codec_type != CODEC_TYPE_VIDEO )
1995         {
1996                 // Invalidate the video stream
1997                 index = -1;
1998                 mlt_properties_set_int( properties, "video_index", index );
1999         }
2000
2001         // Update the video properties if the index changed
2002         if ( index != self->video_index )
2003         {
2004                 // Reset the video properties if the index changed
2005                 self->video_index = index;
2006                 pthread_mutex_lock( &self->open_mutex );
2007                 if ( self->video_codec )
2008                         avcodec_close( self->video_codec );
2009                 self->video_codec = NULL;
2010                 pthread_mutex_unlock( &self->open_mutex );
2011         }
2012
2013         // Get the frame properties
2014         mlt_properties frame_properties = MLT_FRAME_PROPERTIES( frame );
2015
2016         // Get the codec
2017         if ( context && index > -1 && video_codec_init( self, index, properties ) )
2018         {
2019                 // Set the frame properties
2020                 double force_aspect_ratio = mlt_properties_get_double( properties, "force_aspect_ratio" );
2021                 double aspect_ratio = ( force_aspect_ratio > 0.0 ) ?
2022                         force_aspect_ratio : mlt_properties_get_double( properties, "aspect_ratio" );
2023
2024                 // Set the width and height
2025                 mlt_properties_set_int( frame_properties, "width", self->video_codec->width );
2026                 mlt_properties_set_int( frame_properties, "height", self->video_codec->height );
2027                 mlt_properties_set_int( properties, "meta.media.width", self->video_codec->width );
2028                 mlt_properties_set_int( properties, "meta.media.height", self->video_codec->height );
2029                 mlt_properties_set_double( frame_properties, "aspect_ratio", aspect_ratio );
2030                 mlt_properties_set_int( frame_properties, "colorspace", self->colorspace );
2031
2032                 // Workaround 1088 encodings missing cropping info.
2033                 if ( self->video_codec->height == 1088 && mlt_profile_dar( mlt_service_profile( MLT_PRODUCER_SERVICE( producer ) ) ) == 16.0/9.0 )
2034                 {
2035                         mlt_properties_set_int( properties, "meta.media.height", 1080 );
2036                 }
2037
2038                 // Add our image operation
2039                 mlt_frame_push_service( frame, self );
2040                 mlt_frame_push_get_image( frame, producer_get_image );
2041         }
2042         else
2043         {
2044                 // If something failed, use test card image
2045                 mlt_properties_set_int( frame_properties, "test_image", 1 );
2046         }
2047 }
2048
2049 static int seek_audio( producer_avformat self, mlt_position position, double timecode )
2050 {
2051         int paused = 0;
2052
2053         // Seek if necessary
2054         if ( self->seekable && position != self->audio_expected )
2055         {
2056                 if ( position + 1 == self->audio_expected )
2057                 {
2058                         // We're paused - silence required
2059                         paused = 1;
2060                 }
2061                 else if ( position < self->audio_expected || position - self->audio_expected >= 12 )
2062                 {
2063                         AVFormatContext *context = self->audio_format;
2064                         int64_t timestamp = ( int64_t )( timecode * AV_TIME_BASE + 0.5 );
2065                         if ( context->start_time != AV_NOPTS_VALUE )
2066                                 timestamp += context->start_time;
2067                         if ( timestamp < 0 )
2068                                 timestamp = 0;
2069
2070                         // Set to the real timecode
2071                         if ( av_seek_frame( context, -1, timestamp, AVSEEK_FLAG_BACKWARD ) != 0 )
2072                                 paused = 1;
2073
2074                         // Clear the usage in the audio buffer
2075                         int i = MAX_AUDIO_STREAMS + 1;
2076                         while ( --i )
2077                                 self->audio_used[i - 1] = 0;
2078                 }
2079         }
2080         return paused;
2081 }
2082
2083 static int sample_bytes( AVCodecContext *context )
2084 {
2085 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(8<<8)+0)
2086         return av_get_bytes_per_sample( context->sample_fmt );
2087 #elif LIBAVCODEC_VERSION_MAJOR >= 53
2088         return av_get_bits_per_sample_fmt( context->sample_fmt ) / 8;
2089 #else
2090         return av_get_bits_per_sample_format( context->sample_fmt ) / 8;
2091 #endif
2092 }
2093
2094 static int decode_audio( producer_avformat self, int *ignore, AVPacket pkt, int channels, int samples, double timecode, double fps )
2095 {
2096         // Fetch the audio_format
2097         AVFormatContext *context = self->audio_format;
2098
2099         // Get the current stream index
2100         int index = pkt.stream_index;
2101
2102         // Get codec context
2103         AVCodecContext *codec_context = self->audio_codec[ index ];
2104
2105         // Obtain the resample context if it exists (not always needed)
2106         ReSampleContext *resample = self->audio_resample[ index ];
2107
2108         // Obtain the audio buffers
2109         uint8_t *audio_buffer = self->audio_buffer[ index ];
2110         uint8_t *decode_buffer = self->decode_buffer[ index ];
2111
2112         int audio_used = self->audio_used[ index ];
2113         uint8_t *ptr = pkt.data;
2114         int len = pkt.size;
2115         int ret = 0;
2116
2117         while ( ptr && ret >= 0 && len > 0 )
2118         {
2119                 int sizeof_sample = resample? sizeof( int16_t ) : sample_bytes( codec_context );
2120                 int data_size = self->audio_buffer_size[ index ];
2121
2122                 // Decode the audio
2123 #if (LIBAVCODEC_VERSION_INT >= ((52<<16)+(26<<8)+0))
2124                 ret = avcodec_decode_audio3( codec_context, (int16_t*) decode_buffer, &data_size, &pkt );
2125 #elif (LIBAVCODEC_VERSION_INT >= ((51<<16)+(29<<8)+0))
2126                 ret = avcodec_decode_audio2( codec_context, decode_buffer, &data_size, ptr, len );
2127 #else
2128                 ret = avcodec_decode_audio( codec_context, decode_buffer, &data_size, ptr, len );
2129 #endif
2130                 if ( ret < 0 )
2131                 {
2132                         mlt_log_warning( MLT_PRODUCER_SERVICE(self->parent), "audio decoding error %d\n", ret );
2133                         break;
2134                 }
2135
2136                 pkt.size = len -= ret;
2137                 pkt.data = ptr += ret;
2138
2139                 // If decoded successfully
2140                 if ( data_size > 0 )
2141                 {
2142                         // Figure out how many samples will be needed after resampling
2143                         int convert_samples = data_size / codec_context->channels / sample_bytes( codec_context );
2144                         int samples_needed = self->resample_factor * convert_samples;
2145
2146                         // Resize audio buffer to prevent overflow
2147                         if ( ( audio_used + samples_needed ) * channels * sizeof_sample > self->audio_buffer_size[ index ] )
2148                         {
2149                                 self->audio_buffer_size[ index ] = ( audio_used + samples_needed * 2 ) * channels * sizeof_sample;
2150                                 audio_buffer = self->audio_buffer[ index ] = mlt_pool_realloc( audio_buffer, self->audio_buffer_size[ index ] );
2151                         }
2152                         if ( resample )
2153                         {
2154                                 // Copy to audio buffer while resampling
2155                                 uint8_t *source = decode_buffer;
2156                                 uint8_t *dest = &audio_buffer[ audio_used * channels * sizeof_sample ];
2157                                 audio_used += audio_resample( resample, (short*) dest, (short*) source, convert_samples );
2158                         }
2159                         else
2160                         {
2161                                 // Straight copy to audio buffer
2162                                 memcpy( &audio_buffer[ audio_used * codec_context->channels * sizeof_sample ], decode_buffer, data_size );
2163                                 audio_used += convert_samples;
2164                         }
2165
2166                         // Handle ignore
2167                         while ( *ignore && audio_used )
2168                         {
2169                                 *ignore -= 1;
2170                                 audio_used -= audio_used > samples ? samples : audio_used;
2171                                 memmove( audio_buffer, &audio_buffer[ samples * (resample? channels : codec_context->channels) * sizeof_sample ],
2172                                                  audio_used * sizeof_sample );
2173                         }
2174                 }
2175         }
2176
2177         // If we're behind, ignore this packet
2178         // Skip this on non-seekable, audio-only inputs.
2179         if ( pkt.pts >= 0 && ( self->seekable || self->video_format ) && *ignore == 0 && audio_used > samples / 2 )
2180         {
2181                 int64_t pts = pkt.pts;
2182                 if ( self->first_pts != 0 )
2183                         pts -= self->first_pts;
2184                 else if ( context->start_time != AV_NOPTS_VALUE )
2185                         pts -= context->start_time;
2186                 double timebase = av_q2d( context->streams[ index ]->time_base );
2187                 int64_t int_position = ( int64_t )( timebase * pts * fps + 0.5 );
2188                 int64_t req_position = ( int64_t )( timecode * fps + 0.5 );
2189
2190                 mlt_log_debug( MLT_PRODUCER_SERVICE(self->parent),
2191                         "A pkt.pts %"PRId64" pkt.dts %"PRId64" req_pos %"PRId64" cur_pos %"PRId64" pkt_pos %"PRId64"\n",
2192                         pkt.pts, pkt.dts, req_position, self->current_position, int_position );
2193
2194                 if ( int_position > 0 )
2195                 {
2196                         if ( int_position < req_position )
2197                                 // We are behind, so skip some
2198                                 *ignore = req_position - int_position;
2199                         else if ( self->audio_index != INT_MAX && int_position > req_position + 2 )
2200                                 // We are ahead, so seek backwards some more
2201                                 seek_audio( self, req_position, timecode - 1.0 );
2202                 }
2203         }
2204
2205         self->audio_used[ index ] = audio_used;
2206
2207         return ret;
2208 }
2209
2210 /** Get the audio from a frame.
2211 */
2212 static int producer_get_audio( mlt_frame frame, void **buffer, mlt_audio_format *format, int *frequency, int *channels, int *samples )
2213 {
2214         // Get the producer
2215         producer_avformat self = mlt_frame_pop_audio( frame );
2216
2217         pthread_mutex_lock( &self->audio_mutex );
2218
2219         // Obtain the frame number of this frame
2220         mlt_position position = mlt_properties_get_position( MLT_FRAME_PROPERTIES( frame ), "avformat_position" );
2221
2222         // Calculate the real time code
2223         double real_timecode = producer_time_of_frame( self->parent, position );
2224
2225         // Get the producer fps
2226         double fps = mlt_producer_get_fps( self->parent );
2227
2228         // Number of frames to ignore (for ffwd)
2229         int ignore[ MAX_AUDIO_STREAMS ] = { 0 };
2230
2231         // Flag for paused (silence)
2232         int paused = seek_audio( self, position, real_timecode );
2233
2234         // Initialize ignore for all streams from the seek return value
2235         int i = MAX_AUDIO_STREAMS;
2236         while ( i-- )
2237                 ignore[i] = ignore[0];
2238
2239         // Fetch the audio_format
2240         AVFormatContext *context = self->audio_format;
2241
2242         int sizeof_sample = sizeof( int16_t );
2243
2244         // Determine the tracks to use
2245         int index = self->audio_index;
2246         int index_max = self->audio_index + 1;
2247         if ( self->audio_index == INT_MAX )
2248         {
2249                 index = 0;
2250                 index_max = context->nb_streams;
2251                 *channels = self->total_channels;
2252                 *samples = *samples * FFMAX( self->max_frequency, *frequency ) / *frequency;
2253                 *frequency = FFMAX( self->max_frequency, *frequency );
2254         }
2255
2256         // Initialize the resamplers and buffers
2257         for ( ; index < index_max; index++ )
2258         {
2259                 // Get codec context
2260                 AVCodecContext *codec_context = self->audio_codec[ index ];
2261
2262                 if ( codec_context && !self->audio_buffer[ index ] )
2263                 {
2264                         // Check for resample and create if necessary
2265                         if ( codec_context->channels <= 2 )
2266                         {
2267                                 // Determine by how much resampling will increase number of samples
2268                                 double resample_factor = self->audio_index == INT_MAX ? 1 : (double) *channels / codec_context->channels;
2269                                 resample_factor *= (double) *frequency / codec_context->sample_rate;
2270                                 if ( resample_factor > self->resample_factor )
2271                                         self->resample_factor = resample_factor;
2272
2273                                 // Create the resampler
2274 #if (LIBAVCODEC_VERSION_INT >= ((52<<16)+(15<<8)+0))
2275                                 self->audio_resample[ index ] = av_audio_resample_init(
2276                                         self->audio_index == INT_MAX ? codec_context->channels : *channels,
2277                                         codec_context->channels, *frequency, codec_context->sample_rate,
2278                                         AV_SAMPLE_FMT_S16, codec_context->sample_fmt, 16, 10, 0, 0.8 );
2279 #else
2280                                 self->audio_resample[ index ] = audio_resample_init(
2281                                         self->audio_index == INT_MAX ? codec_context->channels : *channels,
2282                                         codec_context->channels, *frequency, codec_context->sample_rate );
2283 #endif
2284                         }
2285                         else
2286                         {
2287                                 codec_context->request_channels = self->audio_index == INT_MAX ? codec_context->channels : *channels;
2288                                 sizeof_sample = sample_bytes( codec_context );
2289                         }
2290
2291                         // Check for audio buffer and create if necessary
2292                         self->audio_buffer_size[ index ] = AVCODEC_MAX_AUDIO_FRAME_SIZE * sizeof_sample;
2293                         self->audio_buffer[ index ] = mlt_pool_alloc( self->audio_buffer_size[ index ] );
2294
2295                         // Check for decoder buffer and create if necessary
2296                         self->decode_buffer[ index ] = av_malloc( self->audio_buffer_size[ index ] );
2297                 }
2298         }
2299
2300         // Get the audio if required
2301         if ( !paused )
2302         {
2303                 int ret = 0;
2304                 int got_audio = 0;
2305                 AVPacket pkt;
2306
2307                 av_init_packet( &pkt );
2308
2309                 // If not resampling, give consumer more than requested.
2310                 // It requested number samples based on requested frame rate.
2311                 // Do not clean this up with a samples *= ...!
2312                 if ( self->audio_index != INT_MAX && ! self->audio_resample[ self->audio_index ] )
2313                         *samples = *samples * self->audio_codec[ self->audio_index ]->sample_rate / *frequency;
2314
2315                 while ( ret >= 0 && !got_audio )
2316                 {
2317                         // Check if the buffer already contains the samples required
2318                         if ( self->audio_index != INT_MAX &&
2319                                  self->audio_used[ self->audio_index ] >= *samples &&
2320                                  ignore[ self->audio_index ] == 0 )
2321                         {
2322                                 got_audio = 1;
2323                                 break;
2324                         }
2325                         else if ( self->audio_index == INT_MAX )
2326                         {
2327                                 // Check if there is enough audio for all streams
2328                                 got_audio = 1;
2329                                 for ( index = 0; got_audio && index < context->nb_streams; index++ )
2330                                         if ( ( self->audio_codec[ index ] && self->audio_used[ index ] < *samples ) || ignore[ index ] )
2331                                                 got_audio = 0;
2332                                 if ( got_audio )
2333                                         break;
2334                         }
2335
2336                         // Read a packet
2337                         pthread_mutex_lock( &self->packets_mutex );
2338                         if ( mlt_deque_count( self->apackets ) )
2339                         {
2340                                 AVPacket *tmp = (AVPacket*) mlt_deque_pop_front( self->apackets );
2341                                 pkt = *tmp;
2342                                 free( tmp );
2343                         }
2344                         else
2345                         {
2346                                 ret = av_read_frame( context, &pkt );
2347                                 if ( ret >= 0 && !self->seekable && pkt.stream_index == self->video_index )
2348                                 {
2349                                         if ( !av_dup_packet( &pkt ) )
2350                                         {
2351                                                 AVPacket *tmp = malloc( sizeof(AVPacket) );
2352                                                 *tmp = pkt;
2353                                                 mlt_deque_push_back( self->vpackets, tmp );
2354                                         }
2355                                 }
2356                         }
2357                         pthread_mutex_unlock( &self->packets_mutex );
2358
2359                         // We only deal with audio from the selected audio index
2360                         index = pkt.stream_index;
2361                         if ( ret >= 0 && pkt.data && pkt.size > 0 && ( index == self->audio_index ||
2362                                  ( self->audio_index == INT_MAX && context->streams[ index ]->codec->codec_type == CODEC_TYPE_AUDIO ) ) )
2363                         {
2364                                 int channels2 = ( self->audio_index == INT_MAX || !self->audio_resample[index] ) ?
2365                                         self->audio_codec[index]->channels : *channels;
2366                                 ret = decode_audio( self, &ignore[index], pkt, channels2, *samples, real_timecode, fps );
2367                         }
2368
2369                         if ( self->seekable || index != self->video_index )
2370                                 av_free_packet( &pkt );
2371
2372                 }
2373
2374                 // Set some additional return values
2375                 *format = mlt_audio_s16;
2376                 if ( self->audio_index != INT_MAX && !self->audio_resample[ self->audio_index ] )
2377                 {
2378                         index = self->audio_index;
2379                         *channels = self->audio_codec[ index ]->channels;
2380                         *frequency = self->audio_codec[ index ]->sample_rate;
2381                         *format = self->audio_codec[ index ]->sample_fmt == AV_SAMPLE_FMT_S32 ? mlt_audio_s32le
2382                                 : self->audio_codec[ index ]->sample_fmt == AV_SAMPLE_FMT_FLT ? mlt_audio_f32le
2383                                 : mlt_audio_s16;
2384                         sizeof_sample = sample_bytes( self->audio_codec[ index ] );
2385                 }
2386                 else if ( self->audio_index == INT_MAX )
2387                 {
2388                         // This only works if all audio tracks have the same sample format.
2389                         for ( index = 0; index < index_max; index++ )
2390                                 if ( self->audio_codec[ index ] && !self->audio_resample[ index ] )
2391                                 {
2392                                         *format = self->audio_codec[ index ]->sample_fmt == AV_SAMPLE_FMT_S32 ? mlt_audio_s32le
2393                                                 : self->audio_codec[ index ]->sample_fmt == AV_SAMPLE_FMT_FLT ? mlt_audio_f32le
2394                                                 : mlt_audio_s16;
2395                                         sizeof_sample = sample_bytes( self->audio_codec[ index ] );
2396                                         break;
2397                                 }
2398                 }
2399
2400                 // Allocate and set the frame's audio buffer
2401                 int size = mlt_audio_format_size( *format, *samples, *channels );
2402                 *buffer = mlt_pool_alloc( size );
2403                 mlt_frame_set_audio( frame, *buffer, *format, size, mlt_pool_release );
2404
2405                 // Interleave tracks if audio_index=all
2406                 if ( self->audio_index == INT_MAX )
2407                 {
2408                         uint8_t *dest = *buffer;
2409                         int i;
2410                         for ( i = 0; i < *samples; i++ )
2411                         {
2412                                 for ( index = 0; index < index_max; index++ )
2413                                 if ( self->audio_codec[ index ] )
2414                                 {
2415                                         int current_channels = self->audio_codec[ index ]->channels;
2416                                         uint8_t *src = self->audio_buffer[ index ] + i * current_channels * sizeof_sample;
2417                                         memcpy( dest, src, current_channels * sizeof_sample );
2418                                         dest += current_channels * sizeof_sample;
2419                                 }
2420                         }
2421                         for ( index = 0; index < index_max; index++ )
2422                         if ( self->audio_codec[ index ] && self->audio_used[ index ] >= *samples )
2423                         {
2424                                 int current_channels = self->audio_codec[ index ]->channels;
2425                                 uint8_t *src = self->audio_buffer[ index ] + *samples * current_channels * sizeof_sample;
2426                                 self->audio_used[index] -= *samples;
2427                                 memmove( self->audio_buffer[ index ], src, self->audio_used[ index ] * current_channels * sizeof_sample );
2428                         }
2429                 }
2430                 // Copy a single track to the output buffer
2431                 else
2432                 {
2433                         index = self->audio_index;
2434
2435                         // Now handle the audio if we have enough
2436                         if ( self->audio_used[ index ] > 0 )
2437                         {
2438                                 uint8_t *src = self->audio_buffer[ index ];
2439                                 // copy samples from audio_buffer
2440                                 size = self->audio_used[ index ] < *samples ? self->audio_used[ index ] : *samples;
2441                                 memcpy( *buffer, src, size * *channels * sizeof_sample );
2442                                 // supply the remaining requested samples as silence
2443                                 if ( *samples > self->audio_used[ index ] )
2444                                         memset( *buffer + size * *channels * sizeof_sample, 0, ( *samples - self->audio_used[ index ] ) * *channels * sizeof_sample );
2445                                 // reposition the samples within audio_buffer
2446                                 self->audio_used[ index ] -= size;
2447                                 memmove( src, src + size * *channels * sizeof_sample, self->audio_used[ index ] * *channels * sizeof_sample );
2448                         }
2449                         else
2450                         {
2451                                 // Otherwise fill with silence
2452                                 memset( *buffer, 0, *samples * *channels * sizeof_sample );
2453                         }
2454                 }
2455         }
2456         else
2457         {
2458                 // Get silence and don't touch the context
2459                 mlt_frame_get_audio( frame, buffer, format, frequency, channels, samples );
2460         }
2461
2462         // Regardless of speed (other than paused), we expect to get the next frame
2463         if ( !paused )
2464                 self->audio_expected = position + 1;
2465
2466         pthread_mutex_unlock( &self->audio_mutex );
2467
2468         return 0;
2469 }
2470
2471 /** Initialize the audio codec context.
2472 */
2473
2474 static int audio_codec_init( producer_avformat self, int index, mlt_properties properties )
2475 {
2476         // Initialise the codec if necessary
2477         if ( !self->audio_codec[ index ] )
2478         {
2479                 // Get codec context
2480                 AVCodecContext *codec_context = self->audio_format->streams[index]->codec;
2481
2482                 // Find the codec
2483                 AVCodec *codec = avcodec_find_decoder( codec_context->codec_id );
2484
2485                 // If we don't have a codec and we can't initialise it, we can't do much more...
2486                 pthread_mutex_lock( &self->open_mutex );
2487 #if LIBAVCODEC_VERSION_INT >= ((53<<16)+(8<<8)+0)
2488                 if ( codec && avcodec_open2( codec_context, codec, NULL ) >= 0 )
2489 #else
2490                 if ( codec && avcodec_open( codec_context, codec ) >= 0 )
2491 #endif
2492                 {
2493                         // Now store the codec with its destructor
2494                         if ( self->audio_codec[ index ] )
2495                                 avcodec_close( self->audio_codec[ index ] );
2496                         self->audio_codec[ index ] = codec_context;
2497                 }
2498                 else
2499                 {
2500                         // Remember that we can't use self later
2501                         self->audio_index = -1;
2502                 }
2503                 pthread_mutex_unlock( &self->open_mutex );
2504
2505                 // Process properties as AVOptions
2506                 apply_properties( codec_context, properties, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_DECODING_PARAM );
2507 #if LIBAVCODEC_VERSION_INT >= ((52<<16)+(122<<8)+0)
2508                 if ( codec && codec->priv_class && codec_context->priv_data )
2509                         apply_properties( codec_context->priv_data, properties, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_DECODING_PARAM );
2510 #endif
2511         }
2512         return self->audio_codec[ index ] && self->audio_index > -1;
2513 }
2514
2515 /** Set up audio handling.
2516 */
2517
2518 static void producer_set_up_audio( producer_avformat self, mlt_frame frame )
2519 {
2520         // Get the producer
2521         mlt_producer producer = self->parent;
2522
2523         // Get the properties
2524         mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
2525
2526         // Fetch the audio format context
2527         AVFormatContext *context = self->audio_format;
2528
2529         mlt_properties frame_properties = MLT_FRAME_PROPERTIES( frame );
2530
2531         // Get the audio_index
2532         int index = mlt_properties_get_int( properties, "audio_index" );
2533
2534         // Handle all audio tracks
2535         if ( self->audio_index > -1 &&
2536              mlt_properties_get( properties, "audio_index" ) &&
2537              !strcmp( mlt_properties_get( properties, "audio_index" ), "all" ) )
2538                 index = INT_MAX;
2539
2540         // Reopen the file if necessary
2541         if ( !context && self->audio_index > -1 && index > -1 )
2542         {
2543                 producer_open( self, mlt_service_profile( MLT_PRODUCER_SERVICE(producer) ),
2544                         mlt_properties_get( properties, "resource" ), 1 );
2545                 context = self->audio_format;
2546         }
2547
2548         // Exception handling for audio_index
2549         if ( context && index >= (int) context->nb_streams && index < INT_MAX )
2550         {
2551                 for ( index = context->nb_streams - 1;
2552                           index >= 0 && context->streams[ index ]->codec->codec_type != CODEC_TYPE_AUDIO;
2553                           index-- );
2554                 mlt_properties_set_int( properties, "audio_index", index );
2555         }
2556         if ( context && index > -1 && index < INT_MAX &&
2557                  context->streams[ index ]->codec->codec_type != CODEC_TYPE_AUDIO )
2558         {
2559                 index = self->audio_index;
2560                 mlt_properties_set_int( properties, "audio_index", index );
2561         }
2562
2563         // Update the audio properties if the index changed
2564         if ( context && index > -1 && index != self->audio_index )
2565         {
2566                 pthread_mutex_lock( &self->open_mutex );
2567                 if ( self->audio_codec[ self->audio_index ] )
2568                         avcodec_close( self->audio_codec[ self->audio_index ] );
2569                 self->audio_codec[ self->audio_index ] = NULL;
2570                 pthread_mutex_unlock( &self->open_mutex );
2571         }
2572         if ( self->audio_index != -1 )
2573                 self->audio_index = index;
2574         else
2575                 index = -1;
2576
2577         // Get the codec(s)
2578         if ( context && index == INT_MAX )
2579         {
2580                 mlt_properties_set_int( frame_properties, "audio_frequency", self->max_frequency );
2581                 mlt_properties_set_int( frame_properties, "audio_channels", self->total_channels );
2582                 for ( index = 0; index < context->nb_streams; index++ )
2583                 {
2584                         if ( context->streams[ index ]->codec->codec_type == CODEC_TYPE_AUDIO )
2585                                 audio_codec_init( self, index, properties );
2586                 }
2587         }
2588         else if ( context && index > -1 && audio_codec_init( self, index, properties ) )
2589         {
2590                 // Set the frame properties
2591                 if ( index < INT_MAX )
2592                 {
2593                         mlt_properties_set_int( frame_properties, "frequency", self->audio_codec[ index ]->sample_rate );
2594                         mlt_properties_set_int( frame_properties, "channels", self->audio_codec[ index ]->channels );
2595                 }
2596         }
2597         if ( context && index > -1 )
2598         {
2599                 // Add our audio operation
2600                 mlt_frame_push_audio( frame, self );
2601                 mlt_frame_push_audio( frame, producer_get_audio );
2602         }
2603 }
2604
2605 /** Our get frame implementation.
2606 */
2607
2608 static int producer_get_frame( mlt_producer producer, mlt_frame_ptr frame, int index )
2609 {
2610         // Access the private data
2611         mlt_service service = MLT_PRODUCER_SERVICE( producer );
2612         mlt_cache_item cache_item = mlt_service_cache_get( service, "producer_avformat" );
2613         producer_avformat self = mlt_cache_item_data( cache_item, NULL );
2614
2615         // If cache miss
2616         if ( !self )
2617         {
2618                 self = calloc( 1, sizeof( struct producer_avformat_s ) );
2619                 producer->child = self;
2620                 self->parent = producer;
2621                 mlt_service_cache_put( service, "producer_avformat", self, 0, (mlt_destructor) producer_avformat_close );
2622                 cache_item = mlt_service_cache_get( service, "producer_avformat" );
2623         }
2624
2625         // Create an empty frame
2626         *frame = mlt_frame_init( service);
2627
2628         if ( *frame )
2629         {
2630                 mlt_properties_set_data( MLT_FRAME_PROPERTIES(*frame), "avformat_cache", cache_item, 0, (mlt_destructor) mlt_cache_item_close, NULL );
2631         }
2632         else
2633         {
2634                 mlt_cache_item_close( cache_item );
2635                 return 1;
2636         }
2637
2638         // Update timecode on the frame we're creating
2639         mlt_frame_set_position( *frame, mlt_producer_position( producer ) );
2640
2641         // Set up the video
2642         producer_set_up_video( self, *frame );
2643
2644         // Set up the audio
2645         producer_set_up_audio( self, *frame );
2646
2647         // Set the position of this producer
2648         mlt_position position = self->seekable ? mlt_producer_frame( producer ) : self->nonseek_position++;
2649         mlt_properties_set_position( MLT_FRAME_PROPERTIES( *frame ), "avformat_position", position );
2650
2651         // Calculate the next timecode
2652         mlt_producer_prepare_next( producer );
2653
2654         return 0;
2655 }
2656
2657 static void producer_avformat_close( producer_avformat self )
2658 {
2659         mlt_log_debug( NULL, "producer_avformat_close\n" );
2660
2661         // Cleanup av contexts
2662         av_free( self->av_frame );
2663         pthread_mutex_lock( &self->open_mutex );
2664         int i;
2665         for ( i = 0; i < MAX_AUDIO_STREAMS; i++ )
2666         {
2667                 if ( self->audio_resample[i] )
2668                         audio_resample_close( self->audio_resample[i] );
2669                 mlt_pool_release( self->audio_buffer[i] );
2670                 av_free( self->decode_buffer[i] );
2671                 if ( self->audio_codec[i] )
2672                         avcodec_close( self->audio_codec[i] );
2673                 self->audio_codec[i] = NULL;
2674         }
2675         if ( self->video_codec )
2676                 avcodec_close( self->video_codec );
2677         self->video_codec = NULL;
2678         // Close the file
2679 #if LIBAVFORMAT_VERSION_INT >= ((53<<16)+(17<<8)+0)
2680         if ( self->dummy_context )
2681                 avformat_close_input( &self->dummy_context );
2682         if ( self->seekable && self->audio_format )
2683                 avformat_close_input( &self->audio_format );
2684         if ( self->video_format )
2685                 avformat_close_input( &self->video_format );
2686 #else
2687         if ( self->dummy_context )
2688                 av_close_input_file( self->dummy_context );
2689         if ( self->seekable && self->audio_format )
2690                 av_close_input_file( self->audio_format );
2691         if ( self->video_format )
2692                 av_close_input_file( self->video_format );
2693 #endif
2694         pthread_mutex_unlock( &self->open_mutex );
2695 #ifdef VDPAU
2696         vdpau_producer_close( self );
2697 #endif
2698         if ( self->image_cache )
2699                 mlt_cache_close( self->image_cache );
2700
2701         // Cleanup the mutexes
2702         pthread_mutex_destroy( &self->audio_mutex );
2703         pthread_mutex_destroy( &self->video_mutex );
2704         pthread_mutex_destroy( &self->packets_mutex );
2705         pthread_mutex_destroy( &self->open_mutex );
2706
2707         // Cleanup the packet queues
2708         AVPacket *pkt;
2709         if ( self->apackets )
2710         {
2711                 while ( ( pkt = mlt_deque_pop_back( self->apackets ) ) )
2712                 {
2713                         av_free_packet( pkt );
2714                         free( pkt );
2715                 }
2716                 mlt_deque_close( self->apackets );
2717                 self->apackets = NULL;
2718         }
2719         if ( self->vpackets )
2720         {
2721                 while ( ( pkt = mlt_deque_pop_back( self->vpackets ) ) )
2722                 {
2723                         av_free_packet( pkt );
2724                         free( pkt );
2725                 }
2726                 mlt_deque_close( self->vpackets );
2727                 self->vpackets = NULL;
2728         }
2729
2730         free( self );
2731 }
2732
2733 static void producer_close( mlt_producer parent )
2734 {
2735         // Remove this instance from the cache
2736         mlt_service_cache_purge( MLT_PRODUCER_SERVICE(parent) );
2737
2738         // Close the parent
2739         parent->close = NULL;
2740         mlt_producer_close( parent );
2741
2742         // Free the memory
2743         free( parent );
2744 }