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                                         break;
 794                                 }
 795                         }
 796                 }
 797                 else
 798                 {
 799                         get_aspect_ratio( properties, format->streams[ self->video_index ], codec_context, NULL );
 800                 }
 801
 802 #ifdef SWSCALE
 803                 // Verify that we can convert this to YUV 4:2:2
 804                 // TODO: we can now also return RGB and RGBA and quite possibly more in the future.
 805                 struct SwsContext *context = sws_getContext( codec_context->width, codec_context->height, codec_context->pix_fmt,
 806                         codec_context->width, codec_context->height, PIX_FMT_YUYV422, SWS_BILINEAR, NULL, NULL, NULL);
 807                 if ( context )
 808                         sws_freeContext( context );
 809                 else
 810                         error = 1;
 811 #endif
 812         }
 813         return error;
 814 }
 815
 816 /** Open the file.
 817 */
 818
 819 static int producer_open( producer_avformat self, mlt_profile profile, const char *URL, int take_lock )
 820 {
 821         // Return an error code (0 == no error)
 822         int error = 0;
 823         mlt_properties properties = MLT_PRODUCER_PROPERTIES( self->parent );
 824
 825         // Lock the service
 826         if ( take_lock )
 827         {
 828                 pthread_mutex_init( &self->audio_mutex, NULL );
 829                 pthread_mutex_init( &self->video_mutex, NULL );
 830                 pthread_mutex_init( &self->packets_mutex, NULL );
 831                 pthread_mutex_init( &self->open_mutex, NULL );
 832                 pthread_mutex_lock( &self->audio_mutex );
 833                 pthread_mutex_lock( &self->video_mutex );
 834         }
 835         mlt_events_block( properties, self->parent );
 836
 837         // Parse URL
 838         AVInputFormat *format = NULL;
 839 #if LIBAVFORMAT_VERSION_INT > ((53<<16)+(6<<8)+0)
 840         AVDictionary *params = NULL;
 841 #else
 842         AVFormatParameters params;
 843         memset( &params, 0, sizeof(params) );
 844 #endif
 845         char *filename = parse_url( profile, URL, &format, &params );
 846
 847         // Now attempt to open the file or device with filename
 848 #if LIBAVFORMAT_VERSION_INT > ((53<<16)+(6<<8)+0)
 849         error = avformat_open_input( &self->video_format, filename, format, &params ) < 0;
 850         if ( error )
 851                 // If the URL is a network stream URL, then we probably need to open with full URL
 852                 error = avformat_open_input( &self->video_format, URL, format, &params ) < 0;
 853 #else
 854         error = av_open_input_file( &self->video_format, filename, format, 0, &params ) < 0;
 855         if ( error )
 856                 // If the URL is a network stream URL, then we probably need to open with full URL
 857                 error = av_open_input_file( &self->video_format, URL, format, 0, &params ) < 0;
 858 #endif
 859
 860         // Set MLT properties onto video AVFormatContext
 861         if ( !error && self->video_format )
 862         {
 863                 apply_properties( self->video_format, properties, AV_OPT_FLAG_DECODING_PARAM );
 864 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(110<<8)+0)
 865                 if ( self->video_format->iformat && self->video_format->iformat->priv_class && self->video_format->priv_data )
 866                         apply_properties( self->video_format->priv_data, properties, AV_OPT_FLAG_DECODING_PARAM );
 867 #endif
 868         }
 869
 870 #if LIBAVFORMAT_VERSION_INT > ((53<<16)+(6<<8)+0)
 871         av_dict_free( &params );
 872 #else
 873         // Cleanup AVFormatParameters
 874         if ( params.standard )
 875                 free( (void*) params.standard );
 876 #endif
 877
 878         // If successful, then try to get additional info
 879         if ( !error && self->video_format )
 880         {
 881                 // Get the stream info
 882 #if LIBAVFORMAT_VERSION_INT > ((53<<16)+(6<<8)+0)
 883                 error = avformat_find_stream_info( self->video_format, NULL ) < 0;
 884 #else
 885                 error = av_find_stream_info( self->video_format ) < 0;
 886 #endif
 887
 888                 // Continue if no error
 889                 if ( !error && self->video_format )
 890                 {
 891                         // Find default audio and video streams
 892                         find_default_streams( self );
 893                         error = get_basic_info( self, profile, filename );
 894
 895                         // Initialize position info
 896                         self->first_pts = AV_NOPTS_VALUE;
 897                         self->last_position = POSITION_INITIAL;
 898
 899                         if ( !self->audio_format )
 900                         {
 901                                 // We're going to cheat here - for seekable A/V files, we will have separate contexts
 902                                 // to support independent seeking of audio from video.
 903                                 // TODO: Is this really necessary?
 904                                 if ( self->audio_index != -1 && self->video_index != -1 )
 905                                 {
 906                                         if ( self->seekable )
 907                                         {
 908                                                 // And open again for our audio context
 909 #if LIBAVFORMAT_VERSION_INT > ((53<<16)+(6<<8)+0)
 910                                                 avformat_open_input( &self->audio_format, filename, NULL, NULL );
 911                                                 apply_properties( self->audio_format, properties, AV_OPT_FLAG_DECODING_PARAM );
 912                                                 if ( self->audio_format->iformat && self->audio_format->iformat->priv_class && self->audio_format->priv_data )
 913                                                         apply_properties( self->audio_format->priv_data, properties, AV_OPT_FLAG_DECODING_PARAM );
 914                                                 avformat_find_stream_info( self->audio_format, NULL );
 915 #else
 916                                                 av_open_input_file( &self->audio_format, filename, NULL, 0, NULL );
 917                                                 apply_properties( self->audio_format, properties, AV_OPT_FLAG_DECODING_PARAM );
 918 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(110<<8)+0)
 919                         if ( self->audio_format->iformat && self->audio_format->iformat->priv_class && self->audio_format->priv_data )
 920                             apply_properties( self->audio_format->priv_data, properties, AV_OPT_FLAG_DECODING_PARAM );
 921 #endif
 922                                                 av_find_stream_info( self->audio_format );
 923 #endif
 924                                         }
 925                                         else
 926                                         {
 927                                                 self->audio_format = self->video_format;
 928                                         }
 929                                 }
 930                                 else if ( self->audio_index != -1 )
 931                                 {
 932                                         // We only have an audio context
 933                                         self->audio_format = self->video_format;
 934                                         self->video_format = NULL;
 935                                 }
 936                                 else if ( self->video_index == -1 )
 937                                 {
 938                                         // Something has gone wrong
 939                                         error = -1;
 940                                 }
 941                                 if ( self->audio_format && !self->audio_streams )
 942                                         get_audio_streams_info( self );
 943                         }
 944                 }
 945         }
 946         if ( filename )
 947                 free( filename );
 948         if ( !error )
 949         {
 950                 self->apackets = mlt_deque_init();
 951                 self->vpackets = mlt_deque_init();
 952         }
 953
 954         if ( self->dummy_context )
 955         {
 956                 pthread_mutex_lock( &self->open_mutex );
 957 #if LIBAVFORMAT_VERSION_INT >= ((53<<16)+(17<<8)+0)
 958                 avformat_close_input( &self->dummy_context );
 959 #else
 960                 av_close_input_file( self->dummy_context );
 961 #endif
 962                 self->dummy_context = NULL;
 963                 pthread_mutex_unlock( &self->open_mutex );
 964         }
 965
 966         // Unlock the service
 967         if ( take_lock )
 968         {
 969                 pthread_mutex_unlock( &self->audio_mutex );
 970                 pthread_mutex_unlock( &self->video_mutex );
 971         }
 972         mlt_events_unblock( properties, self->parent );
 973
 974         return error;
 975 }
 976
 977 static void reopen_video( producer_avformat self, mlt_producer producer )
 978 {
 979         mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
 980         mlt_service_lock( MLT_PRODUCER_SERVICE( producer ) );
 981         pthread_mutex_lock( &self->audio_mutex );
 982         pthread_mutex_lock( &self->open_mutex );
 983
 984         if ( self->video_codec )
 985                 avcodec_close( self->video_codec );
 986         self->video_codec = NULL;
 987 #if LIBAVFORMAT_VERSION_INT >= ((53<<16)+(17<<8)+0)
 988         if ( self->dummy_context )
 989                 avformat_close_input( &self->dummy_context );
 990         if ( self->video_format )
 991                 avformat_close_input( &self->video_format );
 992 #else
 993         if ( self->dummy_context )
 994                 av_close_input_file( self->dummy_context );
 995         if ( self->video_format )
 996                 av_close_input_file( self->video_format );
 997 #endif
 998         self->dummy_context = NULL;
 999         self->video_format = NULL;
1000         pthread_mutex_unlock( &self->open_mutex );
1001
1002         int audio_index = self->audio_index;
1003         int video_index = self->video_index;
1004
1005         producer_open( self, mlt_service_profile( MLT_PRODUCER_SERVICE(producer) ),
1006                 mlt_properties_get( properties, "resource" ), 0 );
1007
1008         self->audio_index = audio_index;
1009         if ( self->video_format && video_index > -1 )
1010         {
1011                 self->video_index = video_index;
1012                 video_codec_init( self, video_index, properties );
1013         }
1014
1015         pthread_mutex_unlock( &self->audio_mutex );
1016         mlt_service_unlock( MLT_PRODUCER_SERVICE( producer ) );
1017 }
1018
1019 static int seek_video( producer_avformat self, mlt_position position,
1020         int64_t req_position, int preseek, int use_pts )
1021 {
1022         mlt_producer producer = self->parent;
1023         int paused = 0;
1024
1025         if ( self->seekable && ( position != self->video_expected || self->last_position < 0 ) )
1026         {
1027                 mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
1028
1029                 // Fetch the video format context
1030                 AVFormatContext *context = self->video_format;
1031
1032                 // Get the video stream
1033                 AVStream *stream = context->streams[ self->video_index ];
1034
1035                 // Get codec context
1036                 AVCodecContext *codec_context = stream->codec;
1037
1038                 // We may want to use the source fps if available
1039                 double source_fps = mlt_properties_get_double( properties, "meta.media.frame_rate_num" ) /
1040                         mlt_properties_get_double( properties, "meta.media.frame_rate_den" );
1041
1042                 // find initial PTS
1043                 if ( self->last_position == POSITION_INITIAL )
1044                 {
1045                         int ret = 0;
1046                         int toscan = 100;
1047                         AVPacket pkt;
1048
1049                         while ( ret >= 0 && toscan-- > 0 )
1050                         {
1051                                 ret = av_read_frame( context, &pkt );
1052                                 if ( ret >= 0 && pkt.stream_index == self->video_index )
1053                                 {
1054                                         mlt_log_debug( MLT_PRODUCER_SERVICE(producer),
1055                                                 "first_pts %"PRId64" dts %"PRId64" pts_dts_delta %d\n",
1056                                                 pkt.pts, pkt.dts, (int)(pkt.pts - pkt.dts) );
1057                                         self->first_pts = use_pts? pkt.pts : pkt.dts;
1058                                         if ( self->first_pts != AV_NOPTS_VALUE )
1059                                                 toscan = 0;
1060                                 }
1061                                 av_free_packet( &pkt );
1062                         }
1063                         av_seek_frame( context, -1, 0, AVSEEK_FLAG_BACKWARD );
1064                 }
1065
1066                 if ( self->av_frame && position + 1 == self->video_expected )
1067                 {
1068                         // We're paused - use last image
1069                         paused = 1;
1070                 }
1071                 else if ( self->seekable && ( position < self->video_expected || position - self->video_expected >= 12 || self->last_position < 0 ) )
1072                 {
1073                         // Calculate the timestamp for the requested frame
1074                         int64_t timestamp = req_position / ( av_q2d( stream->time_base ) * source_fps );
1075                         if ( req_position <= 0 )
1076                                 timestamp = 0;
1077                         else if ( self->first_pts != AV_NOPTS_VALUE )
1078                                 timestamp += self->first_pts;
1079                         else if ( context->start_time != AV_NOPTS_VALUE )
1080                                 timestamp += context->start_time;
1081                         if ( preseek && av_q2d( stream->time_base ) != 0 )
1082                                 timestamp -= 2 / av_q2d( stream->time_base );
1083                         if ( timestamp < 0 )
1084                                 timestamp = 0;
1085                         mlt_log_debug( MLT_PRODUCER_SERVICE(producer), "seeking timestamp %"PRId64" position %d expected %d last_pos %"PRId64"\n",
1086                                 timestamp, position, self->video_expected, self->last_position );
1087
1088                         // Seek to the timestamp
1089                         // NOTE: reopen_video is disabled at this time because it is causing trouble with A/V sync.
1090                         if ( 1 || use_pts || req_position > 0 || self->last_position <= 0 )
1091                         {
1092                                 codec_context->skip_loop_filter = AVDISCARD_NONREF;
1093                                 av_seek_frame( context, self->video_index, timestamp, AVSEEK_FLAG_BACKWARD );
1094
1095                                 // flush any pictures still in decode buffer
1096                                 avcodec_flush_buffers( codec_context );
1097                         }
1098                         else
1099                         {
1100                                 // Re-open video stream when rewinding to beginning from somewhere else.
1101                                 // This is rather ugly, and I prefer not to do it this way, but ffmpeg is
1102                                 // not reliably seeking to the first frame across formats.
1103                                 reopen_video( self, producer );
1104                         }
1105
1106                         // Remove the cached info relating to the previous position
1107                         self->current_position = POSITION_INVALID;
1108                         self->last_position = POSITION_INVALID;
1109                         av_freep( &self->av_frame );
1110                 }
1111         }
1112         return paused;
1113 }
1114
1115 /** Convert a frame position to a time code.
1116 */
1117
1118 static double producer_time_of_frame( mlt_producer producer, mlt_position position )
1119 {
1120         return ( double )position / mlt_producer_get_fps( producer );
1121 }
1122
1123 // Collect information about all audio streams
1124
1125 static void get_audio_streams_info( producer_avformat self )
1126 {
1127         // Fetch the audio format context
1128         AVFormatContext *context = self->audio_format;
1129         int i;
1130
1131         for ( i = 0;
1132                   i < context->nb_streams;
1133                   i++ )
1134         {
1135                 if ( context->streams[i]->codec->codec_type == CODEC_TYPE_AUDIO )
1136                 {
1137                         AVCodecContext *codec_context = context->streams[i]->codec;
1138                         AVCodec *codec = avcodec_find_decoder( codec_context->codec_id );
1139
1140                         // If we don't have a codec and we can't initialise it, we can't do much more...
1141                         pthread_mutex_lock( &self->open_mutex );
1142 #if LIBAVCODEC_VERSION_INT >= ((53<<16)+(8<<8)+0)
1143                         if ( codec && avcodec_open2( codec_context, codec, NULL ) >= 0 )
1144 #else
1145                         if ( codec && avcodec_open( codec_context, codec ) >= 0 )
1146 #endif
1147                         {
1148                                 self->audio_streams++;
1149                                 self->audio_max_stream = i;
1150                                 self->total_channels += codec_context->channels;
1151                                 if ( codec_context->channels > self->max_channel )
1152                                         self->max_channel = codec_context->channels;
1153                                 if ( codec_context->sample_rate > self->max_frequency )
1154                                         self->max_frequency = codec_context->sample_rate;
1155                                 avcodec_close( codec_context );
1156                         }
1157                         pthread_mutex_unlock( &self->open_mutex );
1158                 }
1159         }
1160         mlt_log_verbose( NULL, "[producer avformat] audio: total_streams %d max_stream %d total_channels %d max_channels %d\n",
1161                 self->audio_streams, self->audio_max_stream, self->total_channels, self->max_channel );
1162
1163         // Other audio-specific initializations
1164         self->resample_factor = 1.0;
1165 }
1166
1167 static void set_luma_transfer( struct SwsContext *context, int colorspace, int use_full_range )
1168 {
1169 #if defined(SWSCALE) && (LIBSWSCALE_VERSION_INT >= ((0<<16)+(7<<8)+2))
1170         int *coefficients;
1171         const int *new_coefficients;
1172         int full_range;
1173         int brightness, contrast, saturation;
1174
1175         if ( sws_getColorspaceDetails( context, &coefficients, &full_range, &coefficients, &full_range,
1176                         &brightness, &contrast, &saturation ) != -1 )
1177         {
1178                 // Don't change these from defaults unless explicitly told to.
1179                 if ( use_full_range >= 0 )
1180                         full_range = use_full_range;
1181                 switch ( colorspace )
1182                 {
1183                 case 170:
1184                 case 470:
1185                 case 601:
1186                 case 624:
1187                         new_coefficients = sws_getCoefficients( SWS_CS_ITU601 );
1188                         break;
1189                 case 240:
1190                         new_coefficients = sws_getCoefficients( SWS_CS_SMPTE240M );
1191                         break;
1192                 case 709:
1193                         new_coefficients = sws_getCoefficients( SWS_CS_ITU709 );
1194                         break;
1195                 default:
1196                         new_coefficients = coefficients;
1197                         break;
1198                 }
1199                 sws_setColorspaceDetails( context, new_coefficients, full_range, new_coefficients, full_range,
1200                         brightness, contrast, saturation );
1201         }
1202 #endif
1203 }
1204
1205 static mlt_image_format pick_format( enum PixelFormat pix_fmt )
1206 {
1207         switch ( pix_fmt )
1208         {
1209         case PIX_FMT_ARGB:
1210         case PIX_FMT_RGBA:
1211         case PIX_FMT_ABGR:
1212         case PIX_FMT_BGRA:
1213                 return mlt_image_rgb24a;
1214         case PIX_FMT_YUV420P:
1215         case PIX_FMT_YUVJ420P:
1216         case PIX_FMT_YUVA420P:
1217                 return mlt_image_yuv420p;
1218         case PIX_FMT_RGB24:
1219         case PIX_FMT_BGR24:
1220         case PIX_FMT_GRAY8:
1221         case PIX_FMT_MONOWHITE:
1222         case PIX_FMT_MONOBLACK:
1223         case PIX_FMT_RGB8:
1224         case PIX_FMT_BGR8:
1225                 return mlt_image_rgb24;
1226         default:
1227                 return mlt_image_yuv422;
1228         }
1229 }
1230
1231 static void convert_image( AVFrame *frame, uint8_t *buffer, int pix_fmt,
1232         mlt_image_format *format, int width, int height, int colorspace, uint8_t **alpha )
1233 {
1234 #ifdef SWSCALE
1235         int full_range = -1;
1236         int flags = SWS_BICUBIC | SWS_ACCURATE_RND;
1237
1238 #ifdef USE_MMX
1239         flags |= SWS_CPU_CAPS_MMX;
1240 #endif
1241 #ifdef USE_SSE
1242         flags |= SWS_CPU_CAPS_MMX2;
1243 #endif
1244
1245         // extract alpha from planar formats
1246         if ( ( pix_fmt == PIX_FMT_YUVA420P
1247 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(35<<8)+101)
1248                         || pix_fmt == PIX_FMT_YUVA444P
1249 #endif
1250                         ) &&
1251                 *format != mlt_image_rgb24a && *format != mlt_image_opengl &&
1252                 frame->data[3] && frame->linesize[3] )
1253         {
1254                 int i;
1255                 uint8_t *src, *dst;
1256
1257                 dst = *alpha = mlt_pool_alloc( width * height );
1258                 src = frame->data[3];
1259
1260                 for ( i = 0; i < height; dst += width, src += frame->linesize[3], i++ )
1261                         memcpy( dst, src, FFMIN( width, frame->linesize[3] ) );
1262         }
1263
1264         if ( *format == mlt_image_yuv420p )
1265         {
1266                 struct SwsContext *context = sws_getContext( width, height, pix_fmt,
1267                         width, height, PIX_FMT_YUV420P, flags, NULL, NULL, NULL);
1268                 AVPicture output;
1269                 output.data[0] = buffer;
1270                 output.data[1] = buffer + width * height;
1271                 output.data[2] = buffer + ( 5 * width * height ) / 4;
1272                 output.linesize[0] = width;
1273                 output.linesize[1] = width >> 1;
1274                 output.linesize[2] = width >> 1;
1275                 set_luma_transfer( context, colorspace, full_range );
1276                 sws_scale( context, (const uint8_t* const*) frame->data, frame->linesize, 0, height,
1277                         output.data, output.linesize);
1278                 sws_freeContext( context );
1279         }
1280         else if ( *format == mlt_image_rgb24 )
1281         {
1282                 struct SwsContext *context = sws_getContext( width, height, pix_fmt,
1283                         width, height, PIX_FMT_RGB24, flags | SWS_FULL_CHR_H_INT, NULL, NULL, NULL);
1284                 AVPicture output;
1285                 avpicture_fill( &output, buffer, PIX_FMT_RGB24, width, height );
1286                 set_luma_transfer( context, colorspace, full_range );
1287                 sws_scale( context, (const uint8_t* const*) frame->data, frame->linesize, 0, height,
1288                         output.data, output.linesize);
1289                 sws_freeContext( context );
1290         }
1291         else if ( *format == mlt_image_rgb24a || *format == mlt_image_opengl )
1292         {
1293                 struct SwsContext *context = sws_getContext( width, height, pix_fmt,
1294                         width, height, PIX_FMT_RGBA, flags | SWS_FULL_CHR_H_INT, NULL, NULL, NULL);
1295                 AVPicture output;
1296                 avpicture_fill( &output, buffer, PIX_FMT_RGBA, width, height );
1297                 set_luma_transfer( context, colorspace, full_range );
1298                 sws_scale( context, (const uint8_t* const*) frame->data, frame->linesize, 0, height,
1299                         output.data, output.linesize);
1300                 sws_freeContext( context );
1301         }
1302         else
1303         {
1304                 struct SwsContext *context = sws_getContext( width, height, pix_fmt,
1305                         width, height, PIX_FMT_YUYV422, flags | SWS_FULL_CHR_H_INP, NULL, NULL, NULL);
1306                 AVPicture output;
1307                 avpicture_fill( &output, buffer, PIX_FMT_YUYV422, width, height );
1308                 set_luma_transfer( context, colorspace, full_range );
1309                 sws_scale( context, (const uint8_t* const*) frame->data, frame->linesize, 0, height,
1310                         output.data, output.linesize);
1311                 sws_freeContext( context );
1312         }
1313 #else
1314         if ( *format == mlt_image_yuv420p )
1315         {
1316                 AVPicture pict;
1317                 pict.data[0] = buffer;
1318                 pict.data[1] = buffer + width * height;
1319                 pict.data[2] = buffer + ( 5 * width * height ) / 4;
1320                 pict.linesize[0] = width;
1321                 pict.linesize[1] = width >> 1;
1322                 pict.linesize[2] = width >> 1;
1323                 img_convert( &pict, PIX_FMT_YUV420P, (AVPicture *)frame, pix_fmt, width, height );
1324         }
1325         else if ( *format == mlt_image_rgb24 )
1326         {
1327                 AVPicture output;
1328                 avpicture_fill( &output, buffer, PIX_FMT_RGB24, width, height );
1329                 img_convert( &output, PIX_FMT_RGB24, (AVPicture *)frame, pix_fmt, width, height );
1330         }
1331         else if ( format == mlt_image_rgb24a || format == mlt_image_opengl )
1332         {
1333                 AVPicture output;
1334                 avpicture_fill( &output, buffer, PIX_FMT_RGB32, width, height );
1335                 img_convert( &output, PIX_FMT_RGB32, (AVPicture *)frame, pix_fmt, width, height );
1336         }
1337         else
1338         {
1339                 AVPicture output;
1340                 avpicture_fill( &output, buffer, PIX_FMT_YUYV422, width, height );
1341                 img_convert( &output, PIX_FMT_YUYV422, (AVPicture *)frame, pix_fmt, width, height );
1342         }
1343 #endif
1344 }
1345
1346 /** Allocate the image buffer and set it on the frame.
1347 */
1348
1349 static int allocate_buffer( mlt_frame frame, AVCodecContext *codec_context, uint8_t **buffer, mlt_image_format *format, int *width, int *height )
1350 {
1351         int size = 0;
1352
1353         if ( codec_context->width == 0 || codec_context->height == 0 )
1354                 return size;
1355         *width = codec_context->width;
1356         *height = codec_context->height;
1357         size = mlt_image_format_size( *format, *width, *height, NULL );
1358         *buffer = mlt_pool_alloc( size );
1359         if ( *buffer )
1360                 mlt_frame_set_image( frame, *buffer, size, mlt_pool_release );
1361         else
1362                 size = 0;
1363
1364         return size;
1365 }
1366
1367 /** Get an image from a frame.
1368 */
1369
1370 static int producer_get_image( mlt_frame frame, uint8_t **buffer, mlt_image_format *format, int *width, int *height, int writable )
1371 {
1372         // Get the producer
1373         producer_avformat self = mlt_frame_pop_service( frame );
1374         mlt_producer producer = self->parent;
1375
1376         // Get the properties from the frame
1377         mlt_properties frame_properties = MLT_FRAME_PROPERTIES( frame );
1378
1379         // Obtain the frame number of this frame
1380         mlt_position position = mlt_properties_get_position( frame_properties, "avformat_position" );
1381
1382         // Get the producer properties
1383         mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
1384
1385         pthread_mutex_lock( &self->video_mutex );
1386
1387         // Fetch the video format context
1388         AVFormatContext *context = self->video_format;
1389
1390         // Get the video stream
1391         AVStream *stream = context->streams[ self->video_index ];
1392
1393         // Get codec context
1394         AVCodecContext *codec_context = stream->codec;
1395
1396         uint8_t *alpha = NULL;
1397         int got_picture = 0;
1398         int image_size = 0;
1399
1400         // Get the image cache
1401         if ( ! self->image_cache && ! mlt_properties_get_int( properties, "noimagecache" ) )
1402         {
1403                 self->image_cache = mlt_cache_init();
1404         }
1405         if ( self->image_cache )
1406         {
1407                 mlt_frame original = mlt_cache_get_frame( self->image_cache, mlt_frame_get_position( frame ) );
1408                 if ( original )
1409                 {
1410                         mlt_properties orig_props = MLT_FRAME_PROPERTIES( original );
1411                         int size = 0;
1412
1413                         *buffer = mlt_properties_get_data( orig_props, "alpha", &size );
1414                         if (*buffer)
1415                                 mlt_frame_set_alpha( frame, *buffer, size, NULL );
1416                         *buffer = mlt_properties_get_data( orig_props, "image", &size );
1417                         mlt_frame_set_image( frame, *buffer, size, NULL );
1418                         mlt_properties_set_data( frame_properties, "avformat.image_cache", original, 0, (mlt_destructor) mlt_frame_close, NULL );
1419                         *format = mlt_properties_get_int( orig_props, "format" );
1420
1421                         // Set the resolution
1422                         *width = codec_context->width;
1423                         *height = codec_context->height;
1424
1425                         // Workaround 1088 encodings missing cropping info.
1426                         if ( *height == 1088 && mlt_profile_dar( mlt_service_profile( MLT_PRODUCER_SERVICE( producer ) ) ) == 16.0/9.0 )
1427                                 *height = 1080;
1428
1429                         got_picture = 1;
1430                         goto exit_get_image;
1431                 }
1432         }
1433         // Cache miss
1434
1435         // Packet
1436         AVPacket pkt;
1437
1438         // We may want to use the source fps if available
1439         double source_fps = mlt_properties_get_double( properties, "meta.media.frame_rate_num" ) /
1440                 mlt_properties_get_double( properties, "meta.media.frame_rate_den" );
1441
1442         // This is the physical frame position in the source
1443         int64_t req_position = ( int64_t )( position / mlt_producer_get_fps( producer ) * source_fps + 0.5 );
1444
1445         // Determines if we have to decode all frames in a sequence
1446         // Temporary hack to improve intra frame only
1447         int must_decode = !( codec_context->codec && codec_context->codec->name ) || (
1448                                   strcmp( codec_context->codec->name, "dnxhd" ) &&
1449                                   strcmp( codec_context->codec->name, "dvvideo" ) &&
1450                                   strcmp( codec_context->codec->name, "huffyuv" ) &&
1451                                   strcmp( codec_context->codec->name, "mjpeg" ) &&
1452                                   strcmp( codec_context->codec->name, "rawvideo" ) );
1453
1454         // Turn on usage of new seek API and PTS for seeking
1455         int use_pts = self->seekable &&
1456                 codec_context->codec_id == CODEC_ID_H264 && codec_context->has_b_frames;
1457         if ( mlt_properties_get( properties, "use_pts" ) )
1458                 use_pts = mlt_properties_get_int( properties, "use_pts" );
1459         double delay = mlt_properties_get_double( properties, "video_delay" );
1460
1461         // Seek if necessary
1462         const char *interp = mlt_properties_get( frame_properties, "rescale.interp" );
1463         int preseek = must_decode
1464 #if defined(FFUDIV) && LIBAVFORMAT_VERSION_INT >= ((53<<16)+(24<<8)+2)
1465                 && ( !use_pts || ( interp && strcmp( interp, "nearest" ) ) )
1466 #endif
1467                 && codec_context->has_b_frames;
1468         int paused = seek_video( self, position, req_position, preseek, use_pts );
1469
1470         // Seek might have reopened the file
1471         context = self->video_format;
1472         stream = context->streams[ self->video_index ];
1473         codec_context = stream->codec;
1474         if ( *format == mlt_image_none ||
1475                         codec_context->pix_fmt == PIX_FMT_ARGB ||
1476                         codec_context->pix_fmt == PIX_FMT_RGBA ||
1477                         codec_context->pix_fmt == PIX_FMT_ABGR ||
1478                         codec_context->pix_fmt == PIX_FMT_BGRA )
1479                 *format = pick_format( codec_context->pix_fmt );
1480
1481         // Duplicate the last image if necessary
1482         if ( self->av_frame && self->av_frame->linesize[0]
1483                  && ( paused || self->current_position >= req_position ) )
1484         {
1485                 // Duplicate it
1486                 if ( ( image_size = allocate_buffer( frame, codec_context, buffer, format, width, height ) ) )
1487                 {
1488                         // Workaround 1088 encodings missing cropping info.
1489                         if ( *height == 1088 && mlt_profile_dar( mlt_service_profile( MLT_PRODUCER_SERVICE( producer ) ) ) == 16.0/9.0 )
1490                                 *height = 1080;
1491 #ifdef VDPAU
1492                         if ( self->vdpau && self->vdpau->buffer )
1493                         {
1494                                 AVPicture picture;
1495                                 picture.data[0] = self->vdpau->buffer;
1496                                 picture.data[2] = self->vdpau->buffer + codec_context->width * codec_context->height;
1497                                 picture.data[1] = self->vdpau->buffer + codec_context->width * codec_context->height * 5 / 4;
1498                                 picture.linesize[0] = codec_context->width;
1499                                 picture.linesize[1] = codec_context->width / 2;
1500                                 picture.linesize[2] = codec_context->width / 2;
1501                                 convert_image( (AVFrame*) &picture, *buffer,
1502                                         PIX_FMT_YUV420P, format, *width, *height, self->colorspace, &alpha );
1503                         }
1504                         else
1505 #endif
1506                         convert_image( self->av_frame, *buffer, codec_context->pix_fmt,
1507                                 format, *width, *height, self->colorspace, &alpha );
1508                         got_picture = 1;
1509                 }
1510         }
1511         else
1512         {
1513                 int ret = 0;
1514                 int64_t int_position = 0;
1515                 int decode_errors = 0;
1516
1517                 av_init_packet( &pkt );
1518
1519                 // Construct an AVFrame for YUV422 conversion
1520                 if ( !self->av_frame )
1521                         self->av_frame = avcodec_alloc_frame( );
1522
1523                 while( ret >= 0 && !got_picture )
1524                 {
1525                         // Read a packet
1526                         pthread_mutex_lock( &self->packets_mutex );
1527                         if ( mlt_deque_count( self->vpackets ) )
1528                         {
1529                                 AVPacket *tmp = (AVPacket*) mlt_deque_pop_front( self->vpackets );
1530                                 pkt = *tmp;
1531                                 free( tmp );
1532                         }
1533                         else
1534                         {
1535                                 ret = av_read_frame( context, &pkt );
1536                                 if ( ret >= 0 && !self->seekable && pkt.stream_index == self->audio_index )
1537                                 {
1538                                         if ( !av_dup_packet( &pkt ) )
1539                                         {
1540                                                 AVPacket *tmp = malloc( sizeof(AVPacket) );
1541                                                 *tmp = pkt;
1542                                                 mlt_deque_push_back( self->apackets, tmp );
1543                                         }
1544                                 }
1545                         }
1546                         pthread_mutex_unlock( &self->packets_mutex );
1547
1548                         // We only deal with video from the selected video_index
1549                         if ( ret >= 0 && pkt.stream_index == self->video_index && pkt.size > 0 )
1550                         {
1551                                 // Determine time code of the packet
1552                                 if ( use_pts && pkt.pts == AV_NOPTS_VALUE )
1553                                 {
1554                                         self->invalid_pts_counter++;
1555                                         if ( self->invalid_pts_counter > 20 )
1556                                         {
1557                                                 mlt_log_warning( MLT_PRODUCER_SERVICE(producer), "PTS invalid; using DTS instead\n" );
1558                                                 mlt_properties_set_int( properties, "use_pts", 0 );
1559                                                 use_pts = 0;
1560                                         }
1561                                 }
1562                                 else
1563                                 {
1564                                         self->invalid_pts_counter = 0;
1565                                 }
1566                                 int64_t pts = ( use_pts && pkt.pts != AV_NOPTS_VALUE )? pkt.pts : pkt.dts;
1567                                 if ( pts != AV_NOPTS_VALUE )
1568                                 {
1569                                         if ( !self->seekable && self->first_pts == AV_NOPTS_VALUE )
1570                                                 self->first_pts = pts;
1571                                         if ( self->first_pts != AV_NOPTS_VALUE )
1572                                                 pts -= self->first_pts;
1573                                         else if ( context->start_time != AV_NOPTS_VALUE )
1574                                                 pts -= context->start_time;
1575                                         int_position = ( int64_t )( ( av_q2d( stream->time_base ) * pts + delay ) * source_fps + 0.5 );
1576                                         if ( int_position == self->last_position )
1577                                                 int_position = self->last_position + 1;
1578                                 }
1579                                 mlt_log_debug( MLT_PRODUCER_SERVICE(producer),
1580                                         "V pkt.pts %"PRId64" pkt.dts %"PRId64" req_pos %"PRId64" cur_pos %"PRId64" pkt_pos %"PRId64"\n",
1581                                         pkt.pts, pkt.dts, req_position, self->current_position, int_position );
1582
1583                                 // Make a dumb assumption on streams that contain wild timestamps
1584                                 if ( abs( req_position - int_position ) > 999 )
1585                                 {
1586                                         int_position = req_position;
1587                                         mlt_log_warning( MLT_PRODUCER_SERVICE(producer), " WILD TIMESTAMP!\n" );
1588                                 }
1589                                 self->last_position = int_position;
1590
1591                                 // Decode the image
1592                                 if ( must_decode || int_position >= req_position )
1593                                 {
1594 #ifdef VDPAU
1595                                         if ( self->vdpau )
1596                                         {
1597                                                 if ( self->vdpau->decoder == VDP_INVALID_HANDLE )
1598                                                 {
1599                                                         vdpau_decoder_init( self );
1600                                                 }
1601                                                 self->vdpau->is_decoded = 0;
1602                                         }
1603 #endif
1604                                         codec_context->reordered_opaque = int_position;
1605                                         if ( int_position >= req_position )
1606                                                 codec_context->skip_loop_filter = AVDISCARD_NONE;
1607 #if (LIBAVCODEC_VERSION_INT >= ((52<<16)+(26<<8)+0))
1608                                         ret = avcodec_decode_video2( codec_context, self->av_frame, &got_picture, &pkt );
1609 #else
1610                                         ret = avcodec_decode_video( codec_context, self->av_frame, &got_picture, pkt.data, pkt.size );
1611 #endif
1612                                         // Note: decode may fail at the beginning of MPEGfile (B-frames referencing before first I-frame), so allow a few errors.
1613                                         if ( ret < 0 )
1614                                         {
1615                                                 if ( ++decode_errors <= 10 )
1616                                                         ret = 0;
1617                                         }
1618                                         else
1619                                         {
1620                                                 decode_errors = 0;
1621                                         }
1622                                 }
1623
1624                                 if ( got_picture )
1625                                 {
1626                                         if ( use_pts )
1627                                                 // Get position of reordered frame
1628                                                 int_position = self->av_frame->reordered_opaque;
1629
1630                                         if ( int_position < req_position )
1631                                                 got_picture = 0;
1632                                         else if ( int_position >= req_position )
1633                                                 codec_context->skip_loop_filter = AVDISCARD_NONE;
1634                                 }
1635                                 mlt_log_debug( MLT_PRODUCER_SERVICE(producer), " got_pic %d key %d\n", got_picture, pkt.flags & PKT_FLAG_KEY );
1636                         }
1637
1638                         // Now handle the picture if we have one
1639                         if ( got_picture )
1640                         {
1641                                 if ( ( image_size = allocate_buffer( frame, codec_context, buffer, format, width, height ) ) )
1642                                 {
1643                                         // Workaround 1088 encodings missing cropping info.
1644                                         if ( *height == 1088 && mlt_profile_dar( mlt_service_profile( MLT_PRODUCER_SERVICE( producer ) ) ) == 16.0/9.0 )
1645                                                 *height = 1080;
1646 #ifdef VDPAU
1647                                         if ( self->vdpau )
1648                                         {
1649                                                 if ( self->vdpau->is_decoded )
1650                                                 {
1651                                                         struct vdpau_render_state *render = (struct vdpau_render_state*) self->av_frame->data[0];
1652                                                         void *planes[3];
1653                                                         uint32_t pitches[3];
1654                                                         VdpYCbCrFormat dest_format = VDP_YCBCR_FORMAT_YV12;
1655
1656                                                         if ( !self->vdpau->buffer )
1657                                                                 self->vdpau->buffer = mlt_pool_alloc( codec_context->width * codec_context->height * 3 / 2 );
1658                                                         self->av_frame->data[0] = planes[0] = self->vdpau->buffer;
1659                                                         self->av_frame->data[2] = planes[1] = self->vdpau->buffer + codec_context->width * codec_context->height;
1660                                                         self->av_frame->data[1] = planes[2] = self->vdpau->buffer + codec_context->width * codec_context->height * 5 / 4;
1661                                                         self->av_frame->linesize[0] = pitches[0] = codec_context->width;
1662                                                         self->av_frame->linesize[1] = pitches[1] = codec_context->width / 2;
1663                                                         self->av_frame->linesize[2] = pitches[2] = codec_context->width / 2;
1664
1665                                                         VdpStatus status = vdp_surface_get_bits( render->surface, dest_format, planes, pitches );
1666                                                         if ( status == VDP_STATUS_OK )
1667                                                         {
1668                                                                 convert_image( self->av_frame, *buffer, PIX_FMT_YUV420P,
1669                                                                         format, *width, *height, self->colorspace, &alpha );
1670                                                         }
1671                                                         else
1672                                                         {
1673                                                                 mlt_log_error( MLT_PRODUCER_SERVICE(producer), "VDPAU Error: %s\n", vdp_get_error_string( status ) );
1674                                                                 image_size = self->vdpau->is_decoded = 0;
1675                                                         }
1676                                                 }
1677                                                 else
1678                                                 {
1679                                                         mlt_log_error( MLT_PRODUCER_SERVICE(producer), "VDPAU error in VdpDecoderRender\n" );
1680                                                         image_size = got_picture = 0;
1681                                                 }
1682                                         }
1683                                         else
1684 #endif
1685                                         convert_image( self->av_frame, *buffer, codec_context->pix_fmt,
1686                                                 format, *width, *height, self->colorspace, &alpha );
1687                                         self->top_field_first |= self->av_frame->top_field_first;
1688                                         self->current_position = int_position;
1689                                 }
1690                                 else
1691                                 {
1692                                         got_picture = 0;
1693                                 }
1694                         }
1695                         if ( self->seekable || pkt.stream_index != self->audio_index )
1696                                 av_free_packet( &pkt );
1697                 }
1698         }
1699
1700         // set alpha
1701         if ( alpha )
1702                 mlt_frame_set_alpha( frame, alpha, (*width) * (*height), mlt_pool_release );
1703
1704         if ( image_size > 0 && self->image_cache )
1705         {
1706                 mlt_properties_set_int( frame_properties, "format", *format );
1707                 mlt_cache_put_frame( self->image_cache, frame );
1708         }
1709
1710         // Try to duplicate last image if there was a decoding failure
1711         // TODO: with multithread decoding a partial frame decoding resulting
1712         // in failure also resets av_frame making test below fail.
1713         if ( !image_size && self->av_frame && self->av_frame->linesize[0] )
1714         {
1715                 // Duplicate it
1716                 if ( ( image_size = allocate_buffer( frame, codec_context, buffer, format, width, height ) ) )
1717                 {
1718                         // Workaround 1088 encodings missing cropping info.
1719                         if ( *height == 1088 && mlt_profile_dar( mlt_service_profile( MLT_PRODUCER_SERVICE( producer ) ) ) == 16.0/9.0 )
1720                                 *height = 1080;
1721 #ifdef VDPAU
1722                         if ( self->vdpau && self->vdpau->buffer )
1723                         {
1724                                 AVPicture picture;
1725                                 picture.data[0] = self->vdpau->buffer;
1726                                 picture.data[2] = self->vdpau->buffer + codec_context->width * codec_context->height;
1727                                 picture.data[1] = self->vdpau->buffer + codec_context->width * codec_context->height * 5 / 4;
1728                                 picture.linesize[0] = codec_context->width;
1729                                 picture.linesize[1] = codec_context->width / 2;
1730                                 picture.linesize[2] = codec_context->width / 2;
1731                                 convert_image( (AVFrame*) &picture, *buffer,
1732                                         PIX_FMT_YUV420P, format, *width, *height, self->colorspace, &alpha );
1733                         }
1734                         else
1735 #endif
1736                         convert_image( self->av_frame, *buffer, codec_context->pix_fmt,
1737                                 format, *width, *height, self->colorspace, &alpha );
1738                         got_picture = 1;
1739                 }
1740         }
1741
1742         // Regardless of speed, we expect to get the next frame (cos we ain't too bright)
1743         self->video_expected = position + 1;
1744
1745 exit_get_image:
1746
1747         pthread_mutex_unlock( &self->video_mutex );
1748
1749         // Set the progressive flag
1750         if ( mlt_properties_get( properties, "force_progressive" ) )
1751                 mlt_properties_set_int( frame_properties, "progressive", !!mlt_properties_get_int( properties, "force_progressive" ) );
1752         else if ( self->av_frame )
1753                 mlt_properties_set_int( frame_properties, "progressive", !self->av_frame->interlaced_frame );
1754
1755         // Set the field order property for this frame
1756         if ( mlt_properties_get( properties, "force_tff" ) )
1757                 mlt_properties_set_int( frame_properties, "top_field_first", !!mlt_properties_get_int( properties, "force_tff" ) );
1758         else
1759                 mlt_properties_set_int( frame_properties, "top_field_first", self->top_field_first );
1760
1761         // Set immutable properties of the selected track's (or overridden) source attributes.
1762         mlt_service_lock( MLT_PRODUCER_SERVICE( producer ) );
1763         mlt_properties_set_int( properties, "meta.media.top_field_first", self->top_field_first );
1764         mlt_properties_set_int( properties, "meta.media.progressive", mlt_properties_get_int( frame_properties, "progressive" ) );
1765         mlt_service_unlock( MLT_PRODUCER_SERVICE( producer ) );
1766
1767         return !got_picture;
1768 }
1769
1770 /** Process properties as AVOptions and apply to AV context obj
1771 */
1772
1773 static void apply_properties( void *obj, mlt_properties properties, int flags )
1774 {
1775         int i;
1776         int count = mlt_properties_count( properties );
1777         for ( i = 0; i < count; i++ )
1778         {
1779                 const char *opt_name = mlt_properties_get_name( properties, i );
1780 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(10<<8)+0)
1781                 const AVOption *opt = av_opt_find( obj, opt_name, NULL, flags, flags );
1782 #else
1783                 const AVOption *opt = av_find_opt( obj, opt_name, NULL, flags, flags );
1784 #endif
1785                 if ( opt_name && mlt_properties_get( properties, opt_name ) )
1786                 {
1787                         if ( opt )
1788 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(12<<8)+0)
1789                                 av_opt_set( obj, opt_name, mlt_properties_get( properties, opt_name), 0 );
1790 #elif LIBAVCODEC_VERSION_INT >= ((52<<16)+(7<<8)+0)
1791                                 av_set_string3( obj, opt_name, mlt_properties_get( properties, opt_name), 0, NULL );
1792 #elif LIBAVCODEC_VERSION_INT >= ((51<<16)+(59<<8)+0)
1793                                 av_set_string2( obj, opt_name, mlt_properties_get( properties, opt_name), 0 );
1794 #else
1795                                 av_set_string( obj, opt_name, mlt_properties_get( properties, opt_name) );
1796 #endif
1797                 }
1798         }
1799 }
1800
1801 /** Initialize the video codec context.
1802  */
1803
1804 static int video_codec_init( producer_avformat self, int index, mlt_properties properties )
1805 {
1806         // Initialise the codec if necessary
1807         if ( !self->video_codec )
1808         {
1809                 // Get the video stream
1810                 AVStream *stream = self->video_format->streams[ index ];
1811
1812                 // Get codec context
1813                 AVCodecContext *codec_context = stream->codec;
1814
1815                 // Find the codec
1816                 AVCodec *codec = avcodec_find_decoder( codec_context->codec_id );
1817 #ifdef VDPAU
1818                 if ( codec_context->codec_id == CODEC_ID_H264 )
1819                 {
1820                         if ( ( codec = avcodec_find_decoder_by_name( "h264_vdpau" ) ) )
1821                         {
1822                                 if ( vdpau_init( self ) )
1823                                 {
1824                                         self->video_codec = codec_context;
1825                                         if ( !vdpau_decoder_init( self ) )
1826                                                 vdpau_fini( self );
1827                                 }
1828                         }
1829                         if ( !self->vdpau )
1830                                 codec = avcodec_find_decoder( codec_context->codec_id );
1831                 }
1832 #endif
1833
1834                 // Initialise multi-threading
1835                 int thread_count = mlt_properties_get_int( properties, "threads" );
1836                 if ( thread_count == 0 && getenv( "MLT_AVFORMAT_THREADS" ) )
1837                         thread_count = atoi( getenv( "MLT_AVFORMAT_THREADS" ) );
1838                 if ( thread_count > 1 )
1839                         codec_context->thread_count = thread_count;
1840
1841                 // If we don't have a codec and we can't initialise it, we can't do much more...
1842                 pthread_mutex_lock( &self->open_mutex );
1843 #if LIBAVCODEC_VERSION_INT >= ((53<<16)+(8<<8)+0)
1844                 if ( codec && avcodec_open2( codec_context, codec, NULL ) >= 0 )
1845 #else
1846                 if ( codec && avcodec_open( codec_context, codec ) >= 0 )
1847 #endif
1848                 {
1849                         // Now store the codec with its destructor
1850                         self->video_codec = codec_context;
1851                 }
1852                 else
1853                 {
1854                         // Remember that we can't use this later
1855                         self->video_index = -1;
1856                         pthread_mutex_unlock( &self->open_mutex );
1857                         return 0;
1858                 }
1859                 pthread_mutex_unlock( &self->open_mutex );
1860
1861                 // Process properties as AVOptions
1862                 apply_properties( codec_context, properties, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM );
1863 #if LIBAVCODEC_VERSION_INT >= ((52<<16)+(122<<8)+0)
1864                 if ( codec->priv_class && codec_context->priv_data )
1865                         apply_properties( codec_context->priv_data, properties, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM );
1866 #endif
1867
1868                 // Reset some image properties
1869                 mlt_properties_set_int( properties, "width", self->video_codec->width );
1870                 mlt_properties_set_int( properties, "height", self->video_codec->height );
1871                 // For DV, we'll just use the saved aspect ratio
1872                 if ( codec_context->codec_id != CODEC_ID_DVVIDEO )
1873                         get_aspect_ratio( properties, stream, self->video_codec, NULL );
1874
1875                 // Determine the fps first from the codec
1876                 double source_fps = (double) self->video_codec->time_base.den /
1877                                                                    ( self->video_codec->time_base.num == 0 ? 1 : self->video_codec->time_base.num );
1878
1879                 if ( mlt_properties_get( properties, "force_fps" ) )
1880                 {
1881                         source_fps = mlt_properties_get_double( properties, "force_fps" );
1882                         stream->time_base = av_d2q( source_fps, 1024 );
1883                         mlt_properties_set_int( properties, "meta.media.frame_rate_num", stream->time_base.num );
1884                         mlt_properties_set_int( properties, "meta.media.frame_rate_den", stream->time_base.den );
1885                 }
1886                 else
1887                 {
1888                         // If the muxer reports a frame rate different than the codec
1889 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(42<<8)+0)
1890                         double muxer_fps = av_q2d( stream->avg_frame_rate );
1891                         if ( isnan( muxer_fps ) || muxer_fps == 0 )
1892                                 muxer_fps = av_q2d( stream->r_frame_rate );
1893 #else
1894                         double muxer_fps = av_q2d( stream->r_frame_rate );
1895 #endif
1896                         // Choose the lesser - the wrong tends to be off by some multiple of 10
1897                         source_fps = FFMIN( source_fps, muxer_fps );
1898                         if ( source_fps >= 1.0 && ( source_fps < muxer_fps || isnan( muxer_fps ) ) )
1899                         {
1900                                 mlt_properties_set_int( properties, "meta.media.frame_rate_num", self->video_codec->time_base.den );
1901                                 mlt_properties_set_int( properties, "meta.media.frame_rate_den", self->video_codec->time_base.num == 0 ? 1 : self->video_codec->time_base.num );
1902                         }
1903                         else if ( muxer_fps > 0 )
1904                         {
1905                                 AVRational frame_rate = stream->r_frame_rate;
1906                                 // With my samples when r_frame_rate != 1000 but avg_frame_rate is valid,
1907                                 // avg_frame_rate gives some approximate value that does not well match the media.
1908                                 // Also, on my sample where r_frame_rate = 1000, using avg_frame_rate directly
1909                                 // results in some very choppy output, but some value slightly different works
1910                                 // great.
1911 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(42<<8)+0)
1912                                 if ( av_q2d( stream->r_frame_rate ) >= 1000 && av_q2d( stream->avg_frame_rate ) > 0 )
1913                                         frame_rate = av_d2q( av_q2d( stream->avg_frame_rate ), 1024 );
1914 #endif
1915                                 mlt_properties_set_int( properties, "meta.media.frame_rate_num", frame_rate.num );
1916                                 mlt_properties_set_int( properties, "meta.media.frame_rate_den", frame_rate.den );
1917                         }
1918                         else
1919                         {
1920                                 source_fps = mlt_producer_get_fps( self->parent );
1921                                 AVRational frame_rate = av_d2q( source_fps, 255 );
1922                                 mlt_properties_set_int( properties, "meta.media.frame_rate_num", frame_rate.num );
1923                                 mlt_properties_set_int( properties, "meta.media.frame_rate_den", frame_rate.den );
1924                         }
1925                 }
1926
1927                 // Set the YUV colorspace from override or detect
1928                 self->colorspace = mlt_properties_get_int( properties, "force_colorspace" );
1929 #if LIBAVCODEC_VERSION_INT > ((52<<16)+(28<<8)+0)
1930                 if ( ! self->colorspace )
1931                 {
1932                         switch ( self->video_codec->colorspace )
1933                         {
1934                         case AVCOL_SPC_SMPTE240M:
1935                                 self->colorspace = 240;
1936                                 break;
1937                         case AVCOL_SPC_BT470BG:
1938                         case AVCOL_SPC_SMPTE170M:
1939                                 self->colorspace = 601;
1940                                 break;
1941                         case AVCOL_SPC_BT709:
1942                                 self->colorspace = 709;
1943                                 break;
1944                         default:
1945                                 // This is a heuristic Charles Poynton suggests in "Digital Video and HDTV"
1946                                 self->colorspace = self->video_codec->width * self->video_codec->height > 750000 ? 709 : 601;
1947                                 break;
1948                         }
1949                 }
1950 #endif
1951                 // Let apps get chosen colorspace
1952                 mlt_properties_set_int( properties, "meta.media.colorspace", self->colorspace );
1953         }
1954         return self->video_codec && self->video_index > -1;
1955 }
1956
1957 /** Set up video handling.
1958 */
1959
1960 static void producer_set_up_video( producer_avformat self, mlt_frame frame )
1961 {
1962         // Get the producer
1963         mlt_producer producer = self->parent;
1964
1965         // Get the properties
1966         mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
1967
1968         // Fetch the video format context
1969         AVFormatContext *context = self->video_format;
1970
1971         // Get the video_index
1972         int index = mlt_properties_get_int( properties, "video_index" );
1973
1974         // Reopen the file if necessary
1975         if ( !context && index > -1 )
1976         {
1977                 producer_open( self, mlt_service_profile( MLT_PRODUCER_SERVICE(producer) ),
1978                         mlt_properties_get( properties, "resource" ), 1 );
1979                 context = self->video_format;
1980         }
1981
1982         // Exception handling for video_index
1983         if ( context && index >= (int) context->nb_streams )
1984         {
1985                 // Get the last video stream
1986                 for ( index = context->nb_streams - 1;
1987                           index >= 0 && context->streams[ index ]->codec->codec_type != CODEC_TYPE_VIDEO;
1988                           index-- );
1989                 mlt_properties_set_int( properties, "video_index", index );
1990         }
1991         if ( context && index > -1 && context->streams[ index ]->codec->codec_type != CODEC_TYPE_VIDEO )
1992         {
1993                 // Invalidate the video stream
1994                 index = -1;
1995                 mlt_properties_set_int( properties, "video_index", index );
1996         }
1997
1998         // Update the video properties if the index changed
1999         if ( index != self->video_index )
2000         {
2001                 // Reset the video properties if the index changed
2002                 self->video_index = index;
2003                 pthread_mutex_lock( &self->open_mutex );
2004                 if ( self->video_codec )
2005                         avcodec_close( self->video_codec );
2006                 self->video_codec = NULL;
2007                 pthread_mutex_unlock( &self->open_mutex );
2008         }
2009
2010         // Get the frame properties
2011         mlt_properties frame_properties = MLT_FRAME_PROPERTIES( frame );
2012
2013         // Get the codec
2014         if ( context && index > -1 && video_codec_init( self, index, properties ) )
2015         {
2016                 // Set the frame properties
2017                 double force_aspect_ratio = mlt_properties_get_double( properties, "force_aspect_ratio" );
2018                 double aspect_ratio = ( force_aspect_ratio > 0.0 ) ?
2019                         force_aspect_ratio : mlt_properties_get_double( properties, "aspect_ratio" );
2020
2021                 // Set the width and height
2022                 mlt_properties_set_int( frame_properties, "width", self->video_codec->width );
2023                 mlt_properties_set_int( frame_properties, "height", self->video_codec->height );
2024                 mlt_properties_set_int( properties, "meta.media.width", self->video_codec->width );
2025                 mlt_properties_set_int( properties, "meta.media.height", self->video_codec->height );
2026                 mlt_properties_set_double( frame_properties, "aspect_ratio", aspect_ratio );
2027                 mlt_properties_set_int( frame_properties, "colorspace", self->colorspace );
2028
2029                 // Workaround 1088 encodings missing cropping info.
2030                 if ( self->video_codec->height == 1088 && mlt_profile_dar( mlt_service_profile( MLT_PRODUCER_SERVICE( producer ) ) ) == 16.0/9.0 )
2031                 {
2032                         mlt_properties_set_int( properties, "meta.media.height", 1080 );
2033                 }
2034
2035                 // Add our image operation
2036                 mlt_frame_push_service( frame, self );
2037                 mlt_frame_push_get_image( frame, producer_get_image );
2038         }
2039         else
2040         {
2041                 // If something failed, use test card image
2042                 mlt_properties_set_int( frame_properties, "test_image", 1 );
2043         }
2044 }
2045
2046 static int seek_audio( producer_avformat self, mlt_position position, double timecode )
2047 {
2048         int paused = 0;
2049
2050         // Seek if necessary
2051         if ( self->seekable && position != self->audio_expected )
2052         {
2053                 if ( position + 1 == self->audio_expected )
2054                 {
2055                         // We're paused - silence required
2056                         paused = 1;
2057                 }
2058                 else if ( position < self->audio_expected || position - self->audio_expected >= 12 )
2059                 {
2060                         AVFormatContext *context = self->audio_format;
2061                         int64_t timestamp = ( int64_t )( timecode * AV_TIME_BASE + 0.5 );
2062                         if ( context->start_time != AV_NOPTS_VALUE )
2063                                 timestamp += context->start_time;
2064                         if ( timestamp < 0 )
2065                                 timestamp = 0;
2066
2067                         // Set to the real timecode
2068                         if ( av_seek_frame( context, -1, timestamp, AVSEEK_FLAG_BACKWARD ) != 0 )
2069                                 paused = 1;
2070
2071                         // Clear the usage in the audio buffer
2072                         int i = MAX_AUDIO_STREAMS + 1;
2073                         while ( --i )
2074                                 self->audio_used[i - 1] = 0;
2075                 }
2076         }
2077         return paused;
2078 }
2079
2080 static int sample_bytes( AVCodecContext *context )
2081 {
2082 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(8<<8)+0)
2083         return av_get_bytes_per_sample( context->sample_fmt );
2084 #elif LIBAVCODEC_VERSION_MAJOR >= 53
2085         return av_get_bits_per_sample_fmt( context->sample_fmt ) / 8;
2086 #else
2087         return av_get_bits_per_sample_format( context->sample_fmt ) / 8;
2088 #endif
2089 }
2090
2091 static int decode_audio( producer_avformat self, int *ignore, AVPacket pkt, int channels, int samples, double timecode, double fps )
2092 {
2093         // Fetch the audio_format
2094         AVFormatContext *context = self->audio_format;
2095
2096         // Get the current stream index
2097         int index = pkt.stream_index;
2098
2099         // Get codec context
2100         AVCodecContext *codec_context = self->audio_codec[ index ];
2101
2102         // Obtain the resample context if it exists (not always needed)
2103         ReSampleContext *resample = self->audio_resample[ index ];
2104
2105         // Obtain the audio buffers
2106         uint8_t *audio_buffer = self->audio_buffer[ index ];
2107         uint8_t *decode_buffer = self->decode_buffer[ index ];
2108
2109         int audio_used = self->audio_used[ index ];
2110         uint8_t *ptr = pkt.data;
2111         int len = pkt.size;
2112         int ret = 0;
2113
2114         while ( ptr && ret >= 0 && len > 0 )
2115         {
2116                 int sizeof_sample = resample? sizeof( int16_t ) : sample_bytes( codec_context );
2117                 int data_size = self->audio_buffer_size[ index ];
2118
2119                 // Decode the audio
2120 #if (LIBAVCODEC_VERSION_INT >= ((52<<16)+(26<<8)+0))
2121                 ret = avcodec_decode_audio3( codec_context, (int16_t*) decode_buffer, &data_size, &pkt );
2122 #elif (LIBAVCODEC_VERSION_INT >= ((51<<16)+(29<<8)+0))
2123                 ret = avcodec_decode_audio2( codec_context, decode_buffer, &data_size, ptr, len );
2124 #else
2125                 ret = avcodec_decode_audio( codec_context, decode_buffer, &data_size, ptr, len );
2126 #endif
2127                 if ( ret < 0 )
2128                 {
2129                         mlt_log_warning( MLT_PRODUCER_SERVICE(self->parent), "audio decoding error %d\n", ret );
2130                         break;
2131                 }
2132
2133                 pkt.size = len -= ret;
2134                 pkt.data = ptr += ret;
2135
2136                 // If decoded successfully
2137                 if ( data_size > 0 )
2138                 {
2139                         // Figure out how many samples will be needed after resampling
2140                         int convert_samples = data_size / codec_context->channels / sample_bytes( codec_context );
2141                         int samples_needed = self->resample_factor * convert_samples;
2142
2143                         // Resize audio buffer to prevent overflow
2144                         if ( ( audio_used + samples_needed ) * channels * sizeof_sample > self->audio_buffer_size[ index ] )
2145                         {
2146                                 self->audio_buffer_size[ index ] = ( audio_used + samples_needed * 2 ) * channels * sizeof_sample;
2147                                 audio_buffer = self->audio_buffer[ index ] = mlt_pool_realloc( audio_buffer, self->audio_buffer_size[ index ] );
2148                         }
2149                         if ( resample )
2150                         {
2151                                 // Copy to audio buffer while resampling
2152                                 uint8_t *source = decode_buffer;
2153                                 uint8_t *dest = &audio_buffer[ audio_used * channels * sizeof_sample ];
2154                                 audio_used += audio_resample( resample, (short*) dest, (short*) source, convert_samples );
2155                         }
2156                         else
2157                         {
2158                                 // Straight copy to audio buffer
2159                                 memcpy( &audio_buffer[ audio_used * codec_context->channels * sizeof_sample ], decode_buffer, data_size );
2160                                 audio_used += convert_samples;
2161                         }
2162
2163                         // Handle ignore
2164                         while ( *ignore && audio_used )
2165                         {
2166                                 *ignore -= 1;
2167                                 audio_used -= audio_used > samples ? samples : audio_used;
2168                                 memmove( audio_buffer, &audio_buffer[ samples * (resample? channels : codec_context->channels) * sizeof_sample ],
2169                                                  audio_used * sizeof_sample );
2170                         }
2171                 }
2172         }
2173
2174         // If we're behind, ignore this packet
2175         // Skip this on non-seekable, audio-only inputs.
2176         if ( pkt.pts >= 0 && ( self->seekable || self->video_format ) && *ignore == 0 && audio_used > samples / 2 )
2177         {
2178                 int64_t pts = pkt.pts;
2179                 if ( self->first_pts != 0 )
2180                         pts -= self->first_pts;
2181                 else if ( context->start_time != AV_NOPTS_VALUE )
2182                         pts -= context->start_time;
2183                 double timebase = av_q2d( context->streams[ index ]->time_base );
2184                 int64_t int_position = ( int64_t )( timebase * pts * fps + 0.5 );
2185                 int64_t req_position = ( int64_t )( timecode * fps + 0.5 );
2186
2187                 mlt_log_debug( MLT_PRODUCER_SERVICE(self->parent),
2188                         "A pkt.pts %"PRId64" pkt.dts %"PRId64" req_pos %"PRId64" cur_pos %"PRId64" pkt_pos %"PRId64"\n",
2189                         pkt.pts, pkt.dts, req_position, self->current_position, int_position );
2190
2191                 if ( int_position > 0 )
2192                 {
2193                         if ( int_position < req_position )
2194                                 // We are behind, so skip some
2195                                 *ignore = req_position - int_position;
2196                         else if ( self->audio_index != INT_MAX && int_position > req_position + 2 )
2197                                 // We are ahead, so seek backwards some more
2198                                 seek_audio( self, req_position, timecode - 1.0 );
2199                 }
2200         }
2201
2202         self->audio_used[ index ] = audio_used;
2203
2204         return ret;
2205 }
2206
2207 /** Get the audio from a frame.
2208 */
2209 static int producer_get_audio( mlt_frame frame, void **buffer, mlt_audio_format *format, int *frequency, int *channels, int *samples )
2210 {
2211         // Get the producer
2212         producer_avformat self = mlt_frame_pop_audio( frame );
2213
2214         pthread_mutex_lock( &self->audio_mutex );
2215
2216         // Obtain the frame number of this frame
2217         mlt_position position = mlt_properties_get_position( MLT_FRAME_PROPERTIES( frame ), "avformat_position" );
2218
2219         // Calculate the real time code
2220         double real_timecode = producer_time_of_frame( self->parent, position );
2221
2222         // Get the producer fps
2223         double fps = mlt_producer_get_fps( self->parent );
2224
2225         // Number of frames to ignore (for ffwd)
2226         int ignore[ MAX_AUDIO_STREAMS ] = { 0 };
2227
2228         // Flag for paused (silence)
2229         int paused = seek_audio( self, position, real_timecode );
2230
2231         // Initialize ignore for all streams from the seek return value
2232         int i = MAX_AUDIO_STREAMS;
2233         while ( i-- )
2234                 ignore[i] = ignore[0];
2235
2236         // Fetch the audio_format
2237         AVFormatContext *context = self->audio_format;
2238
2239         int sizeof_sample = sizeof( int16_t );
2240
2241         // Determine the tracks to use
2242         int index = self->audio_index;
2243         int index_max = self->audio_index + 1;
2244         if ( self->audio_index == INT_MAX )
2245         {
2246                 index = 0;
2247                 index_max = context->nb_streams;
2248                 *channels = self->total_channels;
2249                 *samples = *samples * FFMAX( self->max_frequency, *frequency ) / *frequency;
2250                 *frequency = FFMAX( self->max_frequency, *frequency );
2251         }
2252
2253         // Initialize the resamplers and buffers
2254         for ( ; index < index_max; index++ )
2255         {
2256                 // Get codec context
2257                 AVCodecContext *codec_context = self->audio_codec[ index ];
2258
2259                 if ( codec_context && !self->audio_buffer[ index ] )
2260                 {
2261                         // Check for resample and create if necessary
2262                         if ( codec_context->channels <= 2 )
2263                         {
2264                                 // Determine by how much resampling will increase number of samples
2265                                 double resample_factor = self->audio_index == INT_MAX ? 1 : (double) *channels / codec_context->channels;
2266                                 resample_factor *= (double) *frequency / codec_context->sample_rate;
2267                                 if ( resample_factor > self->resample_factor )
2268                                         self->resample_factor = resample_factor;
2269
2270                                 // Create the resampler
2271 #if (LIBAVCODEC_VERSION_INT >= ((52<<16)+(15<<8)+0))
2272                                 self->audio_resample[ index ] = av_audio_resample_init(
2273                                         self->audio_index == INT_MAX ? codec_context->channels : *channels,
2274                                         codec_context->channels, *frequency, codec_context->sample_rate,
2275                                         AV_SAMPLE_FMT_S16, codec_context->sample_fmt, 16, 10, 0, 0.8 );
2276 #else
2277                                 self->audio_resample[ index ] = audio_resample_init(
2278                                         self->audio_index == INT_MAX ? codec_context->channels : *channels,
2279                                         codec_context->channels, *frequency, codec_context->sample_rate );
2280 #endif
2281                         }
2282                         else
2283                         {
2284                                 codec_context->request_channels = self->audio_index == INT_MAX ? codec_context->channels : *channels;
2285                                 sizeof_sample = sample_bytes( codec_context );
2286                         }
2287
2288                         // Check for audio buffer and create if necessary
2289                         self->audio_buffer_size[ index ] = AVCODEC_MAX_AUDIO_FRAME_SIZE * sizeof_sample;
2290                         self->audio_buffer[ index ] = mlt_pool_alloc( self->audio_buffer_size[ index ] );
2291
2292                         // Check for decoder buffer and create if necessary
2293                         self->decode_buffer[ index ] = av_malloc( self->audio_buffer_size[ index ] );
2294                 }
2295         }
2296
2297         // Get the audio if required
2298         if ( !paused )
2299         {
2300                 int ret = 0;
2301                 int got_audio = 0;
2302                 AVPacket pkt;
2303
2304                 av_init_packet( &pkt );
2305
2306                 // If not resampling, give consumer more than requested.
2307                 // It requested number samples based on requested frame rate.
2308                 // Do not clean this up with a samples *= ...!
2309                 if ( self->audio_index != INT_MAX && ! self->audio_resample[ self->audio_index ] )
2310                         *samples = *samples * self->audio_codec[ self->audio_index ]->sample_rate / *frequency;
2311
2312                 while ( ret >= 0 && !got_audio )
2313                 {
2314                         // Check if the buffer already contains the samples required
2315                         if ( self->audio_index != INT_MAX &&
2316                                  self->audio_used[ self->audio_index ] >= *samples &&
2317                                  ignore[ self->audio_index ] == 0 )
2318                         {
2319                                 got_audio = 1;
2320                                 break;
2321                         }
2322                         else if ( self->audio_index == INT_MAX )
2323                         {
2324                                 // Check if there is enough audio for all streams
2325                                 got_audio = 1;
2326                                 for ( index = 0; got_audio && index < context->nb_streams; index++ )
2327                                         if ( ( self->audio_codec[ index ] && self->audio_used[ index ] < *samples ) || ignore[ index ] )
2328                                                 got_audio = 0;
2329                                 if ( got_audio )
2330                                         break;
2331                         }
2332
2333                         // Read a packet
2334                         pthread_mutex_lock( &self->packets_mutex );
2335                         if ( mlt_deque_count( self->apackets ) )
2336                         {
2337                                 AVPacket *tmp = (AVPacket*) mlt_deque_pop_front( self->apackets );
2338                                 pkt = *tmp;
2339                                 free( tmp );
2340                         }
2341                         else
2342                         {
2343                                 ret = av_read_frame( context, &pkt );
2344                                 if ( ret >= 0 && !self->seekable && pkt.stream_index == self->video_index )
2345                                 {
2346                                         if ( !av_dup_packet( &pkt ) )
2347                                         {
2348                                                 AVPacket *tmp = malloc( sizeof(AVPacket) );
2349                                                 *tmp = pkt;
2350                                                 mlt_deque_push_back( self->vpackets, tmp );
2351                                         }
2352                                 }
2353                         }
2354                         pthread_mutex_unlock( &self->packets_mutex );
2355
2356                         // We only deal with audio from the selected audio index
2357                         index = pkt.stream_index;
2358                         if ( ret >= 0 && pkt.data && pkt.size > 0 && ( index == self->audio_index ||
2359                                  ( self->audio_index == INT_MAX && context->streams[ index ]->codec->codec_type == CODEC_TYPE_AUDIO ) ) )
2360                         {
2361                                 int channels2 = ( self->audio_index == INT_MAX || !self->audio_resample[index] ) ?
2362                                         self->audio_codec[index]->channels : *channels;
2363                                 ret = decode_audio( self, &ignore[index], pkt, channels2, *samples, real_timecode, fps );
2364                         }
2365
2366                         if ( self->seekable || index != self->video_index )
2367                                 av_free_packet( &pkt );
2368
2369                 }
2370
2371                 // Set some additional return values
2372                 *format = mlt_audio_s16;
2373                 if ( self->audio_index != INT_MAX && !self->audio_resample[ self->audio_index ] )
2374                 {
2375                         index = self->audio_index;
2376                         *channels = self->audio_codec[ index ]->channels;
2377                         *frequency = self->audio_codec[ index ]->sample_rate;
2378                         *format = self->audio_codec[ index ]->sample_fmt == AV_SAMPLE_FMT_S32 ? mlt_audio_s32le
2379                                 : self->audio_codec[ index ]->sample_fmt == AV_SAMPLE_FMT_FLT ? mlt_audio_f32le
2380                                 : mlt_audio_s16;
2381                         sizeof_sample = sample_bytes( self->audio_codec[ index ] );
2382                 }
2383                 else if ( self->audio_index == INT_MAX )
2384                 {
2385                         // This only works if all audio tracks have the same sample format.
2386                         for ( index = 0; index < index_max; index++ )
2387                                 if ( self->audio_codec[ index ] && !self->audio_resample[ index ] )
2388                                 {
2389                                         *format = self->audio_codec[ index ]->sample_fmt == AV_SAMPLE_FMT_S32 ? mlt_audio_s32le
2390                                                 : self->audio_codec[ index ]->sample_fmt == AV_SAMPLE_FMT_FLT ? mlt_audio_f32le
2391                                                 : mlt_audio_s16;
2392                                         sizeof_sample = sample_bytes( self->audio_codec[ index ] );
2393                                         break;
2394                                 }
2395                 }
2396
2397                 // Allocate and set the frame's audio buffer
2398                 int size = mlt_audio_format_size( *format, *samples, *channels );
2399                 *buffer = mlt_pool_alloc( size );
2400                 mlt_frame_set_audio( frame, *buffer, *format, size, mlt_pool_release );
2401
2402                 // Interleave tracks if audio_index=all
2403                 if ( self->audio_index == INT_MAX )
2404                 {
2405                         uint8_t *dest = *buffer;
2406                         int i;
2407                         for ( i = 0; i < *samples; i++ )
2408                         {
2409                                 for ( index = 0; index < index_max; index++ )
2410                                 if ( self->audio_codec[ index ] )
2411                                 {
2412                                         int current_channels = self->audio_codec[ index ]->channels;
2413                                         uint8_t *src = self->audio_buffer[ index ] + i * current_channels * sizeof_sample;
2414                                         memcpy( dest, src, current_channels * sizeof_sample );
2415                                         dest += current_channels * sizeof_sample;
2416                                 }
2417                         }
2418                         for ( index = 0; index < index_max; index++ )
2419                         if ( self->audio_codec[ index ] && self->audio_used[ index ] >= *samples )
2420                         {
2421                                 int current_channels = self->audio_codec[ index ]->channels;
2422                                 uint8_t *src = self->audio_buffer[ index ] + *samples * current_channels * sizeof_sample;
2423                                 self->audio_used[index] -= *samples;
2424                                 memmove( self->audio_buffer[ index ], src, self->audio_used[ index ] * current_channels * sizeof_sample );
2425                         }
2426                 }
2427                 // Copy a single track to the output buffer
2428                 else
2429                 {
2430                         index = self->audio_index;
2431
2432                         // Now handle the audio if we have enough
2433                         if ( self->audio_used[ index ] > 0 )
2434                         {
2435                                 uint8_t *src = self->audio_buffer[ index ];
2436                                 // copy samples from audio_buffer
2437                                 size = self->audio_used[ index ] < *samples ? self->audio_used[ index ] : *samples;
2438                                 memcpy( *buffer, src, size * *channels * sizeof_sample );
2439                                 // supply the remaining requested samples as silence
2440                                 if ( *samples > self->audio_used[ index ] )
2441                                         memset( *buffer + size * *channels * sizeof_sample, 0, ( *samples - self->audio_used[ index ] ) * *channels * sizeof_sample );
2442                                 // reposition the samples within audio_buffer
2443                                 self->audio_used[ index ] -= size;
2444                                 memmove( src, src + size * *channels * sizeof_sample, self->audio_used[ index ] * *channels * sizeof_sample );
2445                         }
2446                         else
2447                         {
2448                                 // Otherwise fill with silence
2449                                 memset( *buffer, 0, *samples * *channels * sizeof_sample );
2450                         }
2451                 }
2452         }
2453         else
2454         {
2455                 // Get silence and don't touch the context
2456                 mlt_frame_get_audio( frame, buffer, format, frequency, channels, samples );
2457         }
2458
2459         // Regardless of speed (other than paused), we expect to get the next frame
2460         if ( !paused )
2461                 self->audio_expected = position + 1;
2462
2463         pthread_mutex_unlock( &self->audio_mutex );
2464
2465         return 0;
2466 }
2467
2468 /** Initialize the audio codec context.
2469 */
2470
2471 static int audio_codec_init( producer_avformat self, int index, mlt_properties properties )
2472 {
2473         // Initialise the codec if necessary
2474         if ( !self->audio_codec[ index ] )
2475         {
2476                 // Get codec context
2477                 AVCodecContext *codec_context = self->audio_format->streams[index]->codec;
2478
2479                 // Find the codec
2480                 AVCodec *codec = avcodec_find_decoder( codec_context->codec_id );
2481
2482                 // If we don't have a codec and we can't initialise it, we can't do much more...
2483                 pthread_mutex_lock( &self->open_mutex );
2484 #if LIBAVCODEC_VERSION_INT >= ((53<<16)+(8<<8)+0)
2485                 if ( codec && avcodec_open2( codec_context, codec, NULL ) >= 0 )
2486 #else
2487                 if ( codec && avcodec_open( codec_context, codec ) >= 0 )
2488 #endif
2489                 {
2490                         // Now store the codec with its destructor
2491                         if ( self->audio_codec[ index ] )
2492                                 avcodec_close( self->audio_codec[ index ] );
2493                         self->audio_codec[ index ] = codec_context;
2494                 }
2495                 else
2496                 {
2497                         // Remember that we can't use self later
2498                         self->audio_index = -1;
2499                 }
2500                 pthread_mutex_unlock( &self->open_mutex );
2501
2502                 // Process properties as AVOptions
2503                 apply_properties( codec_context, properties, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_DECODING_PARAM );
2504 #if LIBAVCODEC_VERSION_INT >= ((52<<16)+(122<<8)+0)
2505                 if ( codec && codec->priv_class && codec_context->priv_data )
2506                         apply_properties( codec_context->priv_data, properties, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_DECODING_PARAM );
2507 #endif
2508         }
2509         return self->audio_codec[ index ] && self->audio_index > -1;
2510 }
2511
2512 /** Set up audio handling.
2513 */
2514
2515 static void producer_set_up_audio( producer_avformat self, mlt_frame frame )
2516 {
2517         // Get the producer
2518         mlt_producer producer = self->parent;
2519
2520         // Get the properties
2521         mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
2522
2523         // Fetch the audio format context
2524         AVFormatContext *context = self->audio_format;
2525
2526         mlt_properties frame_properties = MLT_FRAME_PROPERTIES( frame );
2527
2528         // Get the audio_index
2529         int index = mlt_properties_get_int( properties, "audio_index" );
2530
2531         // Handle all audio tracks
2532         if ( self->audio_index > -1 &&
2533              mlt_properties_get( properties, "audio_index" ) &&
2534              !strcmp( mlt_properties_get( properties, "audio_index" ), "all" ) )
2535                 index = INT_MAX;
2536
2537         // Reopen the file if necessary
2538         if ( !context && self->audio_index > -1 && index > -1 )
2539         {
2540                 producer_open( self, mlt_service_profile( MLT_PRODUCER_SERVICE(producer) ),
2541                         mlt_properties_get( properties, "resource" ), 1 );
2542                 context = self->audio_format;
2543         }
2544
2545         // Exception handling for audio_index
2546         if ( context && index >= (int) context->nb_streams && index < INT_MAX )
2547         {
2548                 for ( index = context->nb_streams - 1;
2549                           index >= 0 && context->streams[ index ]->codec->codec_type != CODEC_TYPE_AUDIO;
2550                           index-- );
2551                 mlt_properties_set_int( properties, "audio_index", index );
2552         }
2553         if ( context && index > -1 && index < INT_MAX &&
2554                  context->streams[ index ]->codec->codec_type != CODEC_TYPE_AUDIO )
2555         {
2556                 index = self->audio_index;
2557                 mlt_properties_set_int( properties, "audio_index", index );
2558         }
2559
2560         // Update the audio properties if the index changed
2561         if ( context && index > -1 && index != self->audio_index )
2562         {
2563                 pthread_mutex_lock( &self->open_mutex );
2564                 if ( self->audio_codec[ self->audio_index ] )
2565                         avcodec_close( self->audio_codec[ self->audio_index ] );
2566                 self->audio_codec[ self->audio_index ] = NULL;
2567                 pthread_mutex_unlock( &self->open_mutex );
2568         }
2569         if ( self->audio_index != -1 )
2570                 self->audio_index = index;
2571         else
2572                 index = -1;
2573
2574         // Get the codec(s)
2575         if ( context && index == INT_MAX )
2576         {
2577                 mlt_properties_set_int( frame_properties, "audio_frequency", self->max_frequency );
2578                 mlt_properties_set_int( frame_properties, "audio_channels", self->total_channels );
2579                 for ( index = 0; index < context->nb_streams; index++ )
2580                 {
2581                         if ( context->streams[ index ]->codec->codec_type == CODEC_TYPE_AUDIO )
2582                                 audio_codec_init( self, index, properties );
2583                 }
2584         }
2585         else if ( context && index > -1 && audio_codec_init( self, index, properties ) )
2586         {
2587                 // Set the frame properties
2588                 if ( index < INT_MAX )
2589                 {
2590                         mlt_properties_set_int( frame_properties, "frequency", self->audio_codec[ index ]->sample_rate );
2591                         mlt_properties_set_int( frame_properties, "channels", self->audio_codec[ index ]->channels );
2592                 }
2593         }
2594         if ( context && index > -1 )
2595         {
2596                 // Add our audio operation
2597                 mlt_frame_push_audio( frame, self );
2598                 mlt_frame_push_audio( frame, producer_get_audio );
2599         }
2600 }
2601
2602 /** Our get frame implementation.
2603 */
2604
2605 static int producer_get_frame( mlt_producer producer, mlt_frame_ptr frame, int index )
2606 {
2607         // Access the private data
2608         mlt_service service = MLT_PRODUCER_SERVICE( producer );
2609         mlt_cache_item cache_item = mlt_service_cache_get( service, "producer_avformat" );
2610         producer_avformat self = mlt_cache_item_data( cache_item, NULL );
2611
2612         // If cache miss
2613         if ( !self )
2614         {
2615                 self = calloc( 1, sizeof( struct producer_avformat_s ) );
2616                 producer->child = self;
2617                 self->parent = producer;
2618                 mlt_service_cache_put( service, "producer_avformat", self, 0, (mlt_destructor) producer_avformat_close );
2619                 cache_item = mlt_service_cache_get( service, "producer_avformat" );
2620         }
2621
2622         // Create an empty frame
2623         *frame = mlt_frame_init( service);
2624
2625         if ( *frame )
2626         {
2627                 mlt_properties_set_data( MLT_FRAME_PROPERTIES(*frame), "avformat_cache", cache_item, 0, (mlt_destructor) mlt_cache_item_close, NULL );
2628         }
2629         else
2630         {
2631                 mlt_cache_item_close( cache_item );
2632                 return 1;
2633         }
2634
2635         // Update timecode on the frame we're creating
2636         mlt_frame_set_position( *frame, mlt_producer_position( producer ) );
2637
2638         // Set up the video
2639         producer_set_up_video( self, *frame );
2640
2641         // Set up the audio
2642         producer_set_up_audio( self, *frame );
2643
2644         // Set the position of this producer
2645         mlt_position position = self->seekable ? mlt_producer_frame( producer ) : self->nonseek_position++;
2646         mlt_properties_set_position( MLT_FRAME_PROPERTIES( *frame ), "avformat_position", position );
2647
2648         // Calculate the next timecode
2649         mlt_producer_prepare_next( producer );
2650
2651         return 0;
2652 }
2653
2654 static void producer_avformat_close( producer_avformat self )
2655 {
2656         mlt_log_debug( NULL, "producer_avformat_close\n" );
2657
2658         // Cleanup av contexts
2659         av_free( self->av_frame );
2660         pthread_mutex_lock( &self->open_mutex );
2661         int i;
2662         for ( i = 0; i < MAX_AUDIO_STREAMS; i++ )
2663         {
2664                 if ( self->audio_resample[i] )
2665                         audio_resample_close( self->audio_resample[i] );
2666                 mlt_pool_release( self->audio_buffer[i] );
2667                 av_free( self->decode_buffer[i] );
2668                 if ( self->audio_codec[i] )
2669                         avcodec_close( self->audio_codec[i] );
2670                 self->audio_codec[i] = NULL;
2671         }
2672         if ( self->video_codec )
2673                 avcodec_close( self->video_codec );
2674         self->video_codec = NULL;
2675         // Close the file
2676 #if LIBAVFORMAT_VERSION_INT >= ((53<<16)+(17<<8)+0)
2677         if ( self->dummy_context )
2678                 avformat_close_input( &self->dummy_context );
2679         if ( self->seekable && self->audio_format )
2680                 avformat_close_input( &self->audio_format );
2681         if ( self->video_format )
2682                 avformat_close_input( &self->video_format );
2683 #else
2684         if ( self->dummy_context )
2685                 av_close_input_file( self->dummy_context );
2686         if ( self->seekable && self->audio_format )
2687                 av_close_input_file( self->audio_format );
2688         if ( self->video_format )
2689                 av_close_input_file( self->video_format );
2690 #endif
2691         pthread_mutex_unlock( &self->open_mutex );
2692 #ifdef VDPAU
2693         vdpau_producer_close( self );
2694 #endif
2695         if ( self->image_cache )
2696                 mlt_cache_close( self->image_cache );
2697
2698         // Cleanup the mutexes
2699         pthread_mutex_destroy( &self->audio_mutex );
2700         pthread_mutex_destroy( &self->video_mutex );
2701         pthread_mutex_destroy( &self->packets_mutex );
2702         pthread_mutex_destroy( &self->open_mutex );
2703
2704         // Cleanup the packet queues
2705         AVPacket *pkt;
2706         if ( self->apackets )
2707         {
2708                 while ( ( pkt = mlt_deque_pop_back( self->apackets ) ) )
2709                 {
2710                         av_free_packet( pkt );
2711                         free( pkt );
2712                 }
2713                 mlt_deque_close( self->apackets );
2714                 self->apackets = NULL;
2715         }
2716         if ( self->vpackets )
2717         {
2718                 while ( ( pkt = mlt_deque_pop_back( self->vpackets ) ) )
2719                 {
2720                         av_free_packet( pkt );
2721                         free( pkt );
2722                 }
2723                 mlt_deque_close( self->vpackets );
2724                 self->vpackets = NULL;
2725         }
2726
2727         free( self );
2728 }
2729
2730 static void producer_close( mlt_producer parent )
2731 {
2732         // Remove this instance from the cache
2733         mlt_service_cache_purge( MLT_PRODUCER_SERVICE(parent) );
2734
2735         // Close the parent
2736         parent->close = NULL;
2737         mlt_producer_close( parent );
2738
2739         // Free the memory
2740         free( parent );
2741 }