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

   1 /*
   2  * producer_avformat.c -- avformat producer
   3  * Copyright (C) 2003-2009 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 #if LIBAVCODEC_VERSION_MAJOR > 52
  38 #include <libavutil/samplefmt.h>
  39 #elif (LIBAVCODEC_VERSION_INT >= ((51<<16)+(71<<8)+0))
  40 const char *avcodec_get_sample_fmt_name(int sample_fmt);
  41 #endif
  42 #ifdef VDPAU
  43 #  include <libavcodec/vdpau.h>
  44 #endif
  45 #if (LIBAVUTIL_VERSION_INT > ((50<<16)+(7<<8)+0))
  46 #  include <libavutil/pixdesc.h>
  47 #endif
  48
  49 // System header files
  50 #include <stdlib.h>
  51 #include <string.h>
  52 #include <pthread.h>
  53 #include <limits.h>
  54
  55 #if LIBAVUTIL_VERSION_INT < (50<<16)
  56 #define PIX_FMT_RGB32 PIX_FMT_RGBA32
  57 #define PIX_FMT_YUYV422 PIX_FMT_YUV422
  58 #endif
  59
  60 #if LIBAVCODEC_VERSION_MAJOR > 52
  61 #include <libavutil/opt.h>
  62 #define CODEC_TYPE_VIDEO      AVMEDIA_TYPE_VIDEO
  63 #define CODEC_TYPE_AUDIO      AVMEDIA_TYPE_AUDIO
  64 #define PKT_FLAG_KEY AV_PKT_FLAG_KEY
  65 #else
  66 #include <libavcodec/opt.h>
  67 #endif
  68
  69 #define POSITION_INITIAL (-2)
  70 #define POSITION_INVALID (-1)
  71
  72 #define MAX_AUDIO_STREAMS (10)
  73 #define MAX_VDPAU_SURFACES (10)
  74
  75 void avformat_lock( );
  76 void avformat_unlock( );
  77
  78 struct producer_avformat_s
  79 {
  80         mlt_producer parent;
  81         AVFormatContext *dummy_context;
  82         AVFormatContext *audio_format;
  83         AVFormatContext *video_format;
  84         AVCodecContext *audio_codec[ MAX_AUDIO_STREAMS ];
  85         AVCodecContext *video_codec;
  86         AVFrame *av_frame;
  87         ReSampleContext *audio_resample[ MAX_AUDIO_STREAMS ];
  88         mlt_position audio_expected;
  89         mlt_position video_expected;
  90         int audio_index;
  91         int video_index;
  92         double start_time;
  93         int first_pts;
  94         int last_position;
  95         int seekable;
  96         int current_position;
  97         int got_picture;
  98         int top_field_first;
  99         uint8_t *audio_buffer[ MAX_AUDIO_STREAMS ];
 100         size_t audio_buffer_size[ MAX_AUDIO_STREAMS ];
 101         uint8_t *decode_buffer[ MAX_AUDIO_STREAMS ];
 102         int audio_used[ MAX_AUDIO_STREAMS ];
 103         int audio_streams;
 104         int audio_max_stream;
 105         int total_channels;
 106         int max_channel;
 107         int max_frequency;
 108         unsigned int invalid_pts_counter;
 109         double resample_factor;
 110         mlt_cache image_cache;
 111         int colorspace;
 112         pthread_mutex_t video_mutex;
 113         pthread_mutex_t audio_mutex;
 114         mlt_deque apackets;
 115         mlt_deque vpackets;
 116         pthread_mutex_t packets_mutex;
 117 #ifdef VDPAU
 118         struct
 119         {
 120                 // from FFmpeg
 121                 struct vdpau_render_state render_states[MAX_VDPAU_SURFACES];
 122
 123                 // internal
 124                 mlt_deque deque;
 125                 int b_age;
 126                 int ip_age[2];
 127                 int is_decoded;
 128                 uint8_t *buffer;
 129         } *vdpau;
 130 #endif
 131 };
 132 typedef struct producer_avformat_s *producer_avformat;
 133
 134 // Forward references.
 135 static int list_components( char* file );
 136 static int producer_open( producer_avformat self, mlt_profile profile, const char *URL );
 137 static int producer_get_frame( mlt_producer producer, mlt_frame_ptr frame, int index );
 138 static void producer_avformat_close( producer_avformat );
 139 static void producer_close( mlt_producer parent );
 140 static void producer_set_up_video( producer_avformat self, mlt_frame frame );
 141 static void producer_set_up_audio( producer_avformat self, mlt_frame frame );
 142 static void apply_properties( void *obj, mlt_properties properties, int flags );
 143 static int video_codec_init( producer_avformat self, int index, mlt_properties properties );
 144 static void get_audio_streams_info( producer_avformat self );
 145
 146 #ifdef VDPAU
 147 #include "vdpau.c"
 148 #endif
 149
 150 /** Constructor for libavformat.
 151 */
 152
 153 mlt_producer producer_avformat_init( mlt_profile profile, const char *service, char *file )
 154 {
 155         if ( list_components( file ) )
 156                 return NULL;
 157
 158         mlt_producer producer = NULL;
 159
 160         // Check that we have a non-NULL argument
 161         if ( file )
 162         {
 163                 // Construct the producer
 164                 producer_avformat self = calloc( 1, sizeof( struct producer_avformat_s ) );
 165                 producer = calloc( 1, sizeof( struct mlt_producer_s ) );
 166
 167                 // Initialise it
 168                 if ( mlt_producer_init( producer, self ) == 0 )
 169                 {
 170                         self->parent = producer;
 171
 172                         // Get the properties
 173                         mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
 174
 175                         // Set the resource property (required for all producers)
 176                         mlt_properties_set( properties, "resource", file );
 177
 178                         // Register transport implementation with the producer
 179                         producer->close = (mlt_destructor) producer_close;
 180
 181                         // Register our get_frame implementation
 182                         producer->get_frame = producer_get_frame;
 183
 184                         if ( strcmp( service, "avformat-novalidate" ) )
 185                         {
 186                                 // Open the file
 187                                 if ( producer_open( self, profile, file ) != 0 )
 188                                 {
 189                                         // Clean up
 190                                         mlt_producer_close( producer );
 191                                         producer = NULL;
 192                                 }
 193                                 else if ( self->seekable )
 194                                 {
 195                                         // Close the file to release resources for large playlists - reopen later as needed
 196                                         avformat_lock();
 197                                         if ( self->audio_format )
 198                                                 av_close_input_file( self->audio_format );
 199                                         self->audio_format = NULL;
 200                                         if ( self->video_format )
 201                                                 av_close_input_file( self->video_format );
 202                                         self->video_format = NULL;
 203                                         avformat_unlock();
 204                                 }
 205                         }
 206                         if ( producer )
 207                         {
 208                                 // Default the user-selectable indices from the auto-detected indices
 209                                 mlt_properties_set_int( properties, "audio_index",  self->audio_index );
 210                                 mlt_properties_set_int( properties, "video_index",  self->video_index );
 211 #ifdef VDPAU
 212                                 mlt_service_cache_set_size( MLT_PRODUCER_SERVICE(producer), "producer_avformat", 5 );
 213 #endif
 214                                 mlt_service_cache_put( MLT_PRODUCER_SERVICE(producer), "producer_avformat", self, 0, (mlt_destructor) producer_avformat_close );
 215                         }
 216                 }
 217         }
 218         return producer;
 219 }
 220
 221 int list_components( char* file )
 222 {
 223         int skip = 0;
 224
 225         // Report information about available demuxers and codecs as YAML Tiny
 226         if ( file && strstr( file, "f-list" ) )
 227         {
 228                 fprintf( stderr, "---\nformats:\n" );
 229                 AVInputFormat *format = NULL;
 230                 while ( ( format = av_iformat_next( format ) ) )
 231                         fprintf( stderr, "  - %s\n", format->name );
 232                 fprintf( stderr, "...\n" );
 233                 skip = 1;
 234         }
 235         if ( file && strstr( file, "acodec-list" ) )
 236         {
 237                 fprintf( stderr, "---\naudio_codecs:\n" );
 238                 AVCodec *codec = NULL;
 239                 while ( ( codec = av_codec_next( codec ) ) )
 240                         if ( codec->decode && codec->type == CODEC_TYPE_AUDIO )
 241                                 fprintf( stderr, "  - %s\n", codec->name );
 242                 fprintf( stderr, "...\n" );
 243                 skip = 1;
 244         }
 245         if ( file && strstr( file, "vcodec-list" ) )
 246         {
 247                 fprintf( stderr, "---\nvideo_codecs:\n" );
 248                 AVCodec *codec = NULL;
 249                 while ( ( codec = av_codec_next( codec ) ) )
 250                         if ( codec->decode && codec->type == CODEC_TYPE_VIDEO )
 251                                 fprintf( stderr, "  - %s\n", codec->name );
 252                 fprintf( stderr, "...\n" );
 253                 skip = 1;
 254         }
 255
 256         return skip;
 257 }
 258
 259 /** Find the default streams.
 260 */
 261
 262 static mlt_properties find_default_streams( producer_avformat self )
 263 {
 264         int i;
 265         char key[200];
 266         AVMetadataTag *tag = NULL;
 267         AVFormatContext *context = self->video_format;
 268         mlt_properties meta_media = MLT_PRODUCER_PROPERTIES( self->parent );
 269
 270         // Default to the first audio and video streams found
 271         self->audio_index = -1;
 272         self->video_index = -1;
 273
 274         mlt_properties_set_int( meta_media, "meta.media.nb_streams", context->nb_streams );
 275
 276         // Allow for multiple audio and video streams in the file and select first of each (if available)
 277         for( i = 0; i < context->nb_streams; i++ )
 278         {
 279                 // Get the codec context
 280                 AVStream *stream = context->streams[ i ];
 281                 if ( ! stream ) continue;
 282                 AVCodecContext *codec_context = stream->codec;
 283                 if ( ! codec_context ) continue;
 284                 AVCodec *codec = avcodec_find_decoder( codec_context->codec_id );
 285                 if ( ! codec ) continue;
 286
 287                 snprintf( key, sizeof(key), "meta.media.%d.stream.type", i );
 288
 289                 // Determine the type and obtain the first index of each type
 290                 switch( codec_context->codec_type )
 291                 {
 292                         case CODEC_TYPE_VIDEO:
 293                                 // Use first video stream
 294                                 if ( self->video_index < 0 )
 295                                         self->video_index = i;
 296                                 mlt_properties_set( meta_media, key, "video" );
 297                                 snprintf( key, sizeof(key), "meta.media.%d.stream.frame_rate", i );
 298 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(42<<8)+0)
 299                                 double ffmpeg_fps = av_q2d( context->streams[ i ]->avg_frame_rate );
 300                                 if ( isnan( ffmpeg_fps ) || ffmpeg_fps == 0 )
 301                                         ffmpeg_fps = av_q2d( context->streams[ i ]->r_frame_rate );
 302                                 mlt_properties_set_double( meta_media, key, ffmpeg_fps );
 303 #else
 304                                 mlt_properties_set_double( meta_media, key, av_q2d( context->streams[ i ]->r_frame_rate ) );
 305 #endif
 306
 307 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(21<<8)+0)
 308                                 snprintf( key, sizeof(key), "meta.media.%d.stream.sample_aspect_ratio", i );
 309                                 mlt_properties_set_double( meta_media, key, av_q2d( context->streams[ i ]->sample_aspect_ratio ) );
 310 #endif
 311                                 snprintf( key, sizeof(key), "meta.media.%d.codec.frame_rate", i );
 312                                 mlt_properties_set_double( meta_media, key, (double) codec_context->time_base.den /
 313                                                                                    ( codec_context->time_base.num == 0 ? 1 : codec_context->time_base.num ) );
 314                                 snprintf( key, sizeof(key), "meta.media.%d.codec.pix_fmt", i );
 315                                 mlt_properties_set( meta_media, key, avcodec_get_pix_fmt_name( codec_context->pix_fmt ) );
 316                                 snprintf( key, sizeof(key), "meta.media.%d.codec.sample_aspect_ratio", i );
 317                                 mlt_properties_set_double( meta_media, key, av_q2d( codec_context->sample_aspect_ratio ) );
 318 #if LIBAVCODEC_VERSION_INT > ((52<<16)+(28<<8)+0)
 319                                 snprintf( key, sizeof(key), "meta.media.%d.codec.colorspace", i );
 320                                 switch ( codec_context->colorspace )
 321                                 {
 322                                 case AVCOL_SPC_SMPTE240M:
 323                                         mlt_properties_set_int( meta_media, key, 240 );
 324                                         break;
 325                                 case AVCOL_SPC_BT470BG:
 326                                 case AVCOL_SPC_SMPTE170M:
 327                                         mlt_properties_set_int( meta_media, key, 601 );
 328                                         break;
 329                                 case AVCOL_SPC_BT709:
 330                                         mlt_properties_set_int( meta_media, key, 709 );
 331                                         break;
 332                                 default:
 333                                         // This is a heuristic Charles Poynton suggests in "Digital Video and HDTV"
 334                                         mlt_properties_set_int( meta_media, key, codec_context->width * codec_context->height > 750000 ? 709 : 601 );
 335                                         break;
 336                                 }
 337 #endif
 338                                 break;
 339                         case CODEC_TYPE_AUDIO:
 340                                 // Use first audio stream
 341                                 if ( self->audio_index < 0 )
 342                                         self->audio_index = i;
 343                                 mlt_properties_set( meta_media, key, "audio" );
 344 #if LIBAVCODEC_VERSION_MAJOR > 52
 345                                 snprintf( key, sizeof(key), "meta.media.%d.codec.sample_fmt", i );
 346                                 mlt_properties_set( meta_media, key, av_get_sample_fmt_name( codec_context->sample_fmt ) );
 347 #elif (LIBAVCODEC_VERSION_INT >= ((51<<16)+(71<<8)+0))
 348                                 snprintf( key, sizeof(key), "meta.media.%d.codec.sample_fmt", i );
 349                                 mlt_properties_set( meta_media, key, avcodec_get_sample_fmt_name( codec_context->sample_fmt ) );
 350 #endif
 351                                 snprintf( key, sizeof(key), "meta.media.%d.codec.sample_rate", i );
 352                                 mlt_properties_set_int( meta_media, key, codec_context->sample_rate );
 353                                 snprintf( key, sizeof(key), "meta.media.%d.codec.channels", i );
 354                                 mlt_properties_set_int( meta_media, key, codec_context->channels );
 355                                 break;
 356                         default:
 357                                 break;
 358                 }
 359 //              snprintf( key, sizeof(key), "meta.media.%d.stream.time_base", i );
 360 //              mlt_properties_set_double( meta_media, key, av_q2d( context->streams[ i ]->time_base ) );
 361                 snprintf( key, sizeof(key), "meta.media.%d.codec.name", i );
 362                 mlt_properties_set( meta_media, key, codec->name );
 363 #if (LIBAVCODEC_VERSION_INT >= ((51<<16)+(55<<8)+0))
 364                 snprintf( key, sizeof(key), "meta.media.%d.codec.long_name", i );
 365                 mlt_properties_set( meta_media, key, codec->long_name );
 366 #endif
 367                 snprintf( key, sizeof(key), "meta.media.%d.codec.bit_rate", i );
 368                 mlt_properties_set_int( meta_media, key, codec_context->bit_rate );
 369 //              snprintf( key, sizeof(key), "meta.media.%d.codec.time_base", i );
 370 //              mlt_properties_set_double( meta_media, key, av_q2d( codec_context->time_base ) );
 371 //              snprintf( key, sizeof(key), "meta.media.%d.codec.profile", i );
 372 //              mlt_properties_set_int( meta_media, key, codec_context->profile );
 373 //              snprintf( key, sizeof(key), "meta.media.%d.codec.level", i );
 374 //              mlt_properties_set_int( meta_media, key, codec_context->level );
 375
 376                 // Read Metadata
 377 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(31<<8)+0)
 378                 while ( ( tag = av_metadata_get( stream->metadata, "", tag, AV_METADATA_IGNORE_SUFFIX ) ) )
 379                 {
 380                         if ( tag->value && strcmp( tag->value, "" ) && strcmp( tag->value, "und" ) )
 381                         {
 382                                 snprintf( key, sizeof(key), "meta.attr.%d.stream.%s.markup", i, tag->key );
 383                                 mlt_properties_set( meta_media, key, tag->value );
 384                         }
 385                 }
 386 #endif
 387         }
 388 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(31<<8)+0)
 389         while ( ( tag = av_metadata_get( context->metadata, "", tag, AV_METADATA_IGNORE_SUFFIX ) ) )
 390         {
 391                 if ( tag->value && strcmp( tag->value, "" ) && strcmp( tag->value, "und" ) )
 392                 {
 393                         snprintf( key, sizeof(key), "meta.attr.%s.markup", tag->key );
 394                         mlt_properties_set( meta_media, key, tag->value );
 395                 }
 396         }
 397 #else
 398         if ( context->title && strcmp( context->title, "" ) )
 399                 mlt_properties_set(properties, "meta.attr.title.markup", context->title );
 400         if ( context->author && strcmp( context->author, "" ) )
 401                 mlt_properties_set(properties, "meta.attr.author.markup", context->author );
 402         if ( context->copyright && strcmp( context->copyright, "" ) )
 403                 mlt_properties_set(properties, "meta.attr.copyright.markup", context->copyright );
 404         if ( context->comment )
 405                 mlt_properties_set(properties, "meta.attr.comment.markup", context->comment );
 406         if ( context->album )
 407                 mlt_properties_set(properties, "meta.attr.album.markup", context->album );
 408         if ( context->year )
 409                 mlt_properties_set_int(properties, "meta.attr.year.markup", context->year );
 410         if ( context->track )
 411                 mlt_properties_set_int(properties, "meta.attr.track.markup", context->track );
 412 #endif
 413
 414         return meta_media;
 415 }
 416
 417 static inline int dv_is_pal( AVPacket *pkt )
 418 {
 419         return pkt->data[3] & 0x80;
 420 }
 421
 422 static int dv_is_wide( AVPacket *pkt )
 423 {
 424         int i = 80 /* block size */ *3 /* VAUX starts at block 3 */ +3 /* skip block header */;
 425
 426         for ( ; i < pkt->size; i += 5 /* packet size */ )
 427         {
 428                 if ( pkt->data[ i ] == 0x61 )
 429                 {
 430                         uint8_t x = pkt->data[ i + 2 ] & 0x7;
 431                         return ( x == 2 ) || ( x == 7 );
 432                 }
 433         }
 434         return 0;
 435 }
 436
 437 static double get_aspect_ratio( mlt_properties properties, AVStream *stream, AVCodecContext *codec_context, AVPacket *pkt )
 438 {
 439         double aspect_ratio = 1.0;
 440
 441         if ( codec_context->codec_id == CODEC_ID_DVVIDEO )
 442         {
 443                 if ( pkt )
 444                 {
 445                         if ( dv_is_pal( pkt ) )
 446                         {
 447                                 if ( dv_is_wide( pkt ) )
 448                                 {
 449                                         mlt_properties_set_int( properties, "meta.media.sample_aspect_num", 64 );
 450                                         mlt_properties_set_int( properties, "meta.media.sample_aspect_den", 45 );
 451                                 }
 452                                 else
 453                                 {
 454                                         mlt_properties_set_int( properties, "meta.media.sample_aspect_num", 16 );
 455                                         mlt_properties_set_int( properties, "meta.media.sample_aspect_den", 15 );
 456                                 }
 457                         }
 458                         else
 459                         {
 460                                 if ( dv_is_wide( pkt ) )
 461                                 {
 462                                         mlt_properties_set_int( properties, "meta.media.sample_aspect_num", 32 );
 463                                         mlt_properties_set_int( properties, "meta.media.sample_aspect_den", 27 );
 464                                 }
 465                                 else
 466                                 {
 467                                         mlt_properties_set_int( properties, "meta.media.sample_aspect_num", 8 );
 468                                         mlt_properties_set_int( properties, "meta.media.sample_aspect_den", 9 );
 469                                 }
 470                         }
 471                 }
 472                 else
 473                 {
 474                         AVRational ar =
 475 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(21<<8)+0)
 476                                 stream->sample_aspect_ratio;
 477 #else
 478                                 codec_context->sample_aspect_ratio;
 479 #endif
 480                         // Override FFmpeg's notion of DV aspect ratios, which are
 481                         // based upon a width of 704. Since we do not have a normaliser
 482                         // that crops (nor is cropping 720 wide ITU-R 601 video always desirable)
 483                         // we just coerce the values to facilitate a passive behaviour through
 484                         // the rescale normaliser when using equivalent producers and consumers.
 485                         // = display_aspect / (width * height)
 486                         if ( ar.num == 10 && ar.den == 11 )
 487                         {
 488                                 // 4:3 NTSC
 489                                 mlt_properties_set_int( properties, "meta.media.sample_aspect_num", 8 );
 490                                 mlt_properties_set_int( properties, "meta.media.sample_aspect_den", 9 );
 491                         }
 492                         else if ( ar.num == 59 && ar.den == 54 )
 493                         {
 494                                 // 4:3 PAL
 495                                 mlt_properties_set_int( properties, "meta.media.sample_aspect_num", 16 );
 496                                 mlt_properties_set_int( properties, "meta.media.sample_aspect_den", 15 );
 497                         }
 498                         else if ( ar.num == 40 && ar.den == 33 )
 499                         {
 500                                 // 16:9 NTSC
 501                                 mlt_properties_set_int( properties, "meta.media.sample_aspect_num", 32 );
 502                                 mlt_properties_set_int( properties, "meta.media.sample_aspect_den", 27 );
 503                         }
 504                         else if ( ar.num == 118 && ar.den == 81 )
 505                         {
 506                                 // 16:9 PAL
 507                                 mlt_properties_set_int( properties, "meta.media.sample_aspect_num", 64 );
 508                                 mlt_properties_set_int( properties, "meta.media.sample_aspect_den", 45 );
 509                         }
 510                 }
 511         }
 512         else
 513         {
 514                 AVRational codec_sar = codec_context->sample_aspect_ratio;
 515                 AVRational stream_sar =
 516 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(21<<8)+0)
 517                         stream->sample_aspect_ratio;
 518 #else
 519                         { 0, 1 };
 520 #endif
 521                 if ( codec_sar.num > 0 )
 522                 {
 523                         mlt_properties_set_int( properties, "meta.media.sample_aspect_num", codec_sar.num );
 524                         mlt_properties_set_int( properties, "meta.media.sample_aspect_den", codec_sar.den );
 525                 }
 526                 else if ( stream_sar.num > 0 )
 527                 {
 528                         mlt_properties_set_int( properties, "meta.media.sample_aspect_num", stream_sar.num );
 529                         mlt_properties_set_int( properties, "meta.media.sample_aspect_den", stream_sar.den );
 530                 }
 531                 else
 532                 {
 533                         mlt_properties_set_int( properties, "meta.media.sample_aspect_num", 1 );
 534                         mlt_properties_set_int( properties, "meta.media.sample_aspect_den", 1 );
 535                 }
 536         }
 537         AVRational ar = { mlt_properties_get_double( properties, "meta.media.sample_aspect_num" ), mlt_properties_get_double( properties, "meta.media.sample_aspect_den" ) };
 538         aspect_ratio = av_q2d( ar );
 539         mlt_properties_set_double( properties, "aspect_ratio", aspect_ratio );
 540
 541         return aspect_ratio;
 542 }
 543
 544 static char* parse_url( mlt_profile profile, const char* URL, AVInputFormat **format, AVFormatParameters *params )
 545 {
 546         if ( !URL ) return NULL;
 547
 548         const char *result = URL;
 549         char *protocol = strdup( URL );
 550         char *url = strchr( protocol, ':' );
 551
 552         // Only if there is not a protocol specification that avformat can handle
 553 #if LIBAVFORMAT_VERSION_MAJOR > 52
 554         if ( url && avio_check( URL, 0 ) < 0 )
 555 #else
 556         if ( url && !url_exist( URL ) )
 557 #endif
 558         {
 559                 // Truncate protocol string
 560                 url[0] = 0;
 561                 mlt_log_debug( NULL, "%s: protocol=%s resource=%s\n", __FUNCTION__, protocol, url + 1 );
 562
 563                 // Lookup the format
 564                 *format = av_find_input_format( protocol );
 565
 566                 // Eat the format designator
 567                 result = ++url;
 568
 569                 if ( *format )
 570                 {
 571                         // These are required by video4linux2 (defaults)
 572                         params->width = profile->width;
 573                         params->height = profile->height;
 574                         params->time_base= (AVRational){ profile->frame_rate_den, profile->frame_rate_num };
 575                         params->channels = 2;
 576                         params->sample_rate = 48000;
 577
 578                         // Parse out params
 579                         url = strchr( url, '?' );
 580                         while ( url )
 581                         {
 582                                 url[0] = 0;
 583                                 char *name = strdup( ++url );
 584                                 char *value = strchr( name, ':' );
 585                                 if ( value )
 586                                 {
 587                                         value[0] = 0;
 588                                         value++;
 589                                         char *t = strchr( value, '&' );
 590                                         if ( t )
 591                                                 t[0] = 0;
 592                                         if ( !strcmp( name, "frame_rate" ) )
 593                                                 params->time_base.den = atoi( value );
 594                                         else if ( !strcmp( name, "frame_rate_base" ) )
 595                                                 params->time_base.num = atoi( value );
 596                                         else if ( !strcmp( name, "sample_rate" ) )
 597                                                 params->sample_rate = atoi( value );
 598                                         else if ( !strcmp( name, "channel" ) )
 599                                                 params->channel = atoi( value );
 600                                         else if ( !strcmp( name, "channels" ) )
 601                                                 params->channels = atoi( value );
 602 #if (LIBAVUTIL_VERSION_INT > ((50<<16)+(7<<8)+0))
 603                                         else if ( !strcmp( name, "pix_fmt" ) )
 604                                                 params->pix_fmt = av_get_pix_fmt( value );
 605 #endif
 606                                         else if ( !strcmp( name, "width" ) )
 607                                                 params->width = atoi( value );
 608                                         else if ( !strcmp( name, "height" ) )
 609                                                 params->height = atoi( value );
 610                                         else if ( !strcmp( name, "standard" ) )
 611                                                 params->standard = strdup( value );
 612                                 }
 613                                 free( name );
 614                                 url = strchr( url, '&' );
 615                         }
 616                 }
 617         }
 618         result = strdup( result );
 619         free( protocol );
 620         return result;
 621 }
 622
 623 static int get_basic_info( producer_avformat self, mlt_profile profile, const char *filename )
 624 {
 625         int error = 0;
 626
 627         // Get the properties
 628         mlt_properties properties = MLT_PRODUCER_PROPERTIES( self->parent );
 629
 630         AVFormatContext *format = self->video_format;
 631
 632         // We will treat everything with the producer fps.
 633         // TODO: make this more flexible.
 634         double fps = mlt_profile_fps( profile );
 635
 636         // Get the duration
 637         if ( !mlt_properties_get_int( properties, "_length_computed" ) )
 638         {
 639                 // The _length_computed flag prevents overwriting explicity set length/out/eof properties
 640                 // when producer_open is called after initial call when restoring or reseting the producer.
 641                 if ( format->duration != AV_NOPTS_VALUE )
 642                 {
 643                         // This isn't going to be accurate for all formats
 644                         mlt_position frames = ( mlt_position )( ( ( double )format->duration / ( double )AV_TIME_BASE ) * fps );
 645                         mlt_properties_set_position( properties, "out", frames - 1 );
 646                         mlt_properties_set_position( properties, "length", frames );
 647                         mlt_properties_set_int( properties, "_length_computed", 1 );
 648                 }
 649                 else
 650                 {
 651                         // Set live sources to run forever
 652                         mlt_properties_set_position( properties, "length", INT_MAX );
 653                         mlt_properties_set_position( properties, "out", INT_MAX - 1 );
 654                         mlt_properties_set( properties, "eof", "loop" );
 655                         mlt_properties_set_int( properties, "_length_computed", 1 );
 656                 }
 657         }
 658
 659         if ( format->start_time != AV_NOPTS_VALUE )
 660                 self->start_time = format->start_time;
 661
 662         // Check if we're seekable
 663         // avdevices are typically AVFMT_NOFILE and not seekable
 664         self->seekable = !format->iformat || !( format->iformat->flags & AVFMT_NOFILE );
 665         if ( format->pb )
 666         {
 667                 // protocols can indicate if they support seeking
 668 #if LIBAVFORMAT_VERSION_MAJOR > 52
 669                 self->seekable = format->pb->seekable;
 670 #else
 671                 URLContext *uc = url_fileno( format->pb );
 672                 if ( uc )
 673                         self->seekable = !uc->is_streamed;
 674 #endif
 675         }
 676         if ( self->seekable )
 677         {
 678                 // Do a more rigourous test of seekable on a disposable context
 679                 self->seekable = av_seek_frame( format, -1, self->start_time, AVSEEK_FLAG_BACKWARD ) >= 0;
 680                 mlt_properties_set_int( properties, "seekable", self->seekable );
 681                 self->dummy_context = format;
 682                 av_open_input_file( &self->video_format, filename, NULL, 0, NULL );
 683                 format = self->video_format;
 684                 av_find_stream_info( format );
 685         }
 686
 687         // Fetch the width, height and aspect ratio
 688         if ( self->video_index != -1 )
 689         {
 690                 AVCodecContext *codec_context = format->streams[ self->video_index ]->codec;
 691                 mlt_properties_set_int( properties, "width", codec_context->width );
 692                 mlt_properties_set_int( properties, "height", codec_context->height );
 693
 694                 if ( codec_context->codec_id == CODEC_ID_DVVIDEO )
 695                 {
 696                         // Fetch the first frame of DV so we can read it directly
 697                         AVPacket pkt;
 698                         int ret = 0;
 699                         while ( ret >= 0 )
 700                         {
 701                                 ret = av_read_frame( format, &pkt );
 702                                 if ( ret >= 0 && pkt.stream_index == self->video_index && pkt.size > 0 )
 703                                 {
 704                                         get_aspect_ratio( properties, format->streams[ self->video_index ], codec_context, &pkt );
 705                                         break;
 706                                 }
 707                         }
 708                 }
 709                 else
 710                 {
 711                         get_aspect_ratio( properties, format->streams[ self->video_index ], codec_context, NULL );
 712                 }
 713
 714 #ifdef SWSCALE
 715                 // Verify that we can convert this to YUV 4:2:2
 716                 // TODO: we can now also return RGB and RGBA and quite possibly more in the future.
 717                 struct SwsContext *context = sws_getContext( codec_context->width, codec_context->height, codec_context->pix_fmt,
 718                         codec_context->width, codec_context->height, PIX_FMT_YUYV422, SWS_BILINEAR, NULL, NULL, NULL);
 719                 if ( context )
 720                         sws_freeContext( context );
 721                 else
 722                         error = 1;
 723 #endif
 724         }
 725         return error;
 726 }
 727
 728 /** Open the file.
 729 */
 730
 731 static int producer_open( producer_avformat self, mlt_profile profile, const char *URL )
 732 {
 733         // Return an error code (0 == no error)
 734         int error = 0;
 735         mlt_properties properties = MLT_PRODUCER_PROPERTIES( self->parent );
 736
 737         // Lock the service
 738         pthread_mutex_init( &self->audio_mutex, NULL );
 739         pthread_mutex_init( &self->video_mutex, NULL );
 740         pthread_mutex_init( &self->packets_mutex, NULL );
 741         mlt_events_block( properties, self->parent );
 742         pthread_mutex_lock( &self->audio_mutex );
 743         pthread_mutex_lock( &self->video_mutex );
 744
 745         // Parse URL
 746         AVInputFormat *format = NULL;
 747         AVFormatParameters params;
 748         memset( &params, 0, sizeof(params) );
 749         char *filename = parse_url( profile, URL, &format, &params );
 750
 751         // Now attempt to open the file or device with filename
 752         error = av_open_input_file( &self->video_format, filename, format, 0, &params ) < 0;
 753         if ( error )
 754                 // If the URL is a network stream URL, then we probably need to open with full URL
 755                 error = av_open_input_file( &self->video_format, URL, format, 0, &params ) < 0;
 756
 757         // Set MLT properties onto video AVFormatContext
 758         if ( !error && self->video_format )
 759         {
 760                 apply_properties( self->video_format, properties, AV_OPT_FLAG_DECODING_PARAM );
 761 #if LIBAVFORMAT_VERSION_MAJOR > 52
 762                 if ( self->video_format->iformat && self->video_format->iformat->priv_class && self->video_format->priv_data )
 763                         apply_properties( self->video_format->priv_data, properties, AV_OPT_FLAG_DECODING_PARAM );
 764 #endif
 765         }
 766
 767         // Cleanup AVFormatParameters
 768         if ( params.standard )
 769                 free( (void*) params.standard );
 770
 771         // If successful, then try to get additional info
 772         if ( !error && self->video_format )
 773         {
 774                 // Get the stream info
 775                 error = av_find_stream_info( self->video_format ) < 0;
 776
 777                 // Continue if no error
 778                 if ( !error && self->video_format )
 779                 {
 780                         // Find default audio and video streams
 781                         find_default_streams( self );
 782                         error = get_basic_info( self, profile, filename );
 783
 784                         // Initialize position info
 785                         self->first_pts = -1;
 786                         self->last_position = POSITION_INITIAL;
 787
 788                         // We're going to cheat here - for seekable A/V files, we will have separate contexts
 789                         // to support independent seeking of audio from video.
 790                         // TODO: Is this really necessary?
 791                         if ( self->audio_index != -1 && self->video_index != -1 )
 792                         {
 793                                 if ( self->seekable )
 794                                 {
 795                                         // And open again for our audio context
 796                                         av_open_input_file( &self->audio_format, filename, NULL, 0, NULL );
 797                                         apply_properties( self->audio_format, properties, AV_OPT_FLAG_DECODING_PARAM );
 798 #if LIBAVFORMAT_VERSION_MAJOR > 52
 799                                         if ( self->audio_format->iformat && self->audio_format->iformat->priv_class && self->audio_format->priv_data )
 800                                                 apply_properties( self->audio_format->priv_data, properties, AV_OPT_FLAG_DECODING_PARAM );
 801 #endif
 802                                         av_find_stream_info( self->audio_format );
 803                                 }
 804                                 else
 805                                 {
 806                                         self->audio_format = self->video_format;
 807                                 }
 808                         }
 809                         else if ( self->audio_index != -1 )
 810                         {
 811                                 // We only have an audio context
 812                                 self->audio_format = self->video_format;
 813                                 self->video_format = NULL;
 814                         }
 815                         else if ( self->video_index == -1 )
 816                         {
 817                                 // Something has gone wrong
 818                                 error = -1;
 819                         }
 820                         if ( self->audio_format && !self->audio_streams )
 821                                 get_audio_streams_info( self );
 822                 }
 823         }
 824         if ( filename )
 825                 free( filename );
 826         if ( !error )
 827         {
 828                 self->apackets = mlt_deque_init();
 829                 self->vpackets = mlt_deque_init();
 830         }
 831
 832         if ( self->dummy_context )
 833         {
 834                 av_close_input_file( self->dummy_context );
 835                 self->dummy_context = NULL;
 836         }
 837
 838         // Unlock the service
 839         pthread_mutex_unlock( &self->audio_mutex );
 840         pthread_mutex_unlock( &self->video_mutex );
 841         mlt_events_unblock( properties, self->parent );
 842
 843         return error;
 844 }
 845
 846 static void reopen_video( producer_avformat self, mlt_producer producer )
 847 {
 848         mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
 849         mlt_service_lock( MLT_PRODUCER_SERVICE( producer ) );
 850         pthread_mutex_lock( &self->audio_mutex );
 851
 852         if ( self->video_codec )
 853         {
 854                 avformat_lock();
 855                 avcodec_close( self->video_codec );
 856                 avformat_unlock();
 857         }
 858         self->video_codec = NULL;
 859         if ( self->dummy_context )
 860                 av_close_input_file( self->dummy_context );
 861         self->dummy_context = NULL;
 862         if ( self->video_format )
 863                 av_close_input_file( self->video_format );
 864         self->video_format = NULL;
 865
 866         int audio_index = self->audio_index;
 867         int video_index = self->video_index;
 868
 869         pthread_mutex_unlock( &self->audio_mutex );
 870         pthread_mutex_unlock( &self->video_mutex );
 871         producer_open( self, mlt_service_profile( MLT_PRODUCER_SERVICE(producer) ),
 872                 mlt_properties_get( properties, "resource" ) );
 873         pthread_mutex_lock( &self->video_mutex );
 874         pthread_mutex_lock( &self->audio_mutex );
 875
 876         self->audio_index = audio_index;
 877         if ( self->video_format && video_index > -1 )
 878         {
 879                 self->video_index = video_index;
 880                 video_codec_init( self, video_index, properties );
 881         }
 882
 883         pthread_mutex_unlock( &self->audio_mutex );
 884         mlt_service_unlock( MLT_PRODUCER_SERVICE( producer ) );
 885 }
 886
 887 static int seek_video( producer_avformat self, mlt_position position,
 888         int req_position, int must_decode, int use_new_seek, int *ignore )
 889 {
 890         mlt_producer producer = self->parent;
 891         int paused = 0;
 892
 893         if ( self->seekable && ( position != self->video_expected || self->last_position < 0 ) )
 894         {
 895                 mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
 896
 897                 // Fetch the video format context
 898                 AVFormatContext *context = self->video_format;
 899
 900                 // Get the video stream
 901                 AVStream *stream = context->streams[ self->video_index ];
 902
 903                 // Get codec context
 904                 AVCodecContext *codec_context = stream->codec;
 905
 906                 // We may want to use the source fps if available
 907                 double source_fps = mlt_properties_get_double( properties, "meta.media.frame_rate_num" ) /
 908                         mlt_properties_get_double( properties, "meta.media.frame_rate_den" );
 909
 910                 if ( self->av_frame && position + 1 == self->video_expected )
 911                 {
 912                         // We're paused - use last image
 913                         paused = 1;
 914                 }
 915                 else if ( !self->seekable && position > self->video_expected && ( position - self->video_expected ) < 250 )
 916                 {
 917                         // Fast forward - seeking is inefficient for small distances - just ignore following frames
 918                         *ignore = ( int )( ( position - self->video_expected ) / mlt_producer_get_fps( producer ) * source_fps );
 919                         codec_context->skip_loop_filter = AVDISCARD_NONREF;
 920                 }
 921                 else if ( self->seekable && ( position < self->video_expected || position - self->video_expected >= 12 || self->last_position < 0 ) )
 922                 {
 923                         if ( use_new_seek && self->last_position == POSITION_INITIAL )
 924                         {
 925                                 // find first key frame
 926                                 int ret = 0;
 927                                 int toscan = 100;
 928                                 AVPacket pkt;
 929
 930                                 while ( ret >= 0 && toscan-- > 0 )
 931                                 {
 932                                         ret = av_read_frame( context, &pkt );
 933                                         if ( ret >= 0 && ( pkt.flags & PKT_FLAG_KEY ) && pkt.stream_index == self->video_index )
 934                                         {
 935                                                 mlt_log_verbose( MLT_PRODUCER_SERVICE(producer), "first_pts %"PRId64" dts %"PRId64" pts_dts_delta %d\n", pkt.pts, pkt.dts, (int)(pkt.pts - pkt.dts) );
 936                                                 self->first_pts = pkt.pts;
 937                                                 toscan = 0;
 938                                         }
 939                                         av_free_packet( &pkt );
 940                                 }
 941                                 // Rewind
 942                                 av_seek_frame( context, -1, 0, AVSEEK_FLAG_BACKWARD );
 943                         }
 944
 945                         // Calculate the timestamp for the requested frame
 946                         int64_t timestamp;
 947                         if ( use_new_seek )
 948                         {
 949                                 timestamp = ( req_position - 0.1 / source_fps ) /
 950                                         ( av_q2d( stream->time_base ) * source_fps );
 951                                 mlt_log_verbose( MLT_PRODUCER_SERVICE(producer), "pos %d pts %"PRId64" ", req_position, timestamp );
 952                                 if ( self->first_pts > 0 )
 953                                         timestamp += self->first_pts;
 954                                 else if ( context->start_time != AV_NOPTS_VALUE )
 955                                         timestamp += context->start_time;
 956                         }
 957                         else
 958                         {
 959                                 timestamp = ( int64_t )( ( double )req_position / source_fps * AV_TIME_BASE + 0.5 );
 960                                 if ( context->start_time != AV_NOPTS_VALUE )
 961                                         timestamp += context->start_time;
 962                         }
 963                         if ( must_decode )
 964                                 timestamp -= AV_TIME_BASE;
 965                         if ( timestamp < 0 )
 966                                 timestamp = 0;
 967                         mlt_log_debug( MLT_PRODUCER_SERVICE(producer), "seeking timestamp %"PRId64" position %d expected %d last_pos %d\n",
 968                                 timestamp, position, self->video_expected, self->last_position );
 969
 970                         // Seek to the timestamp
 971                         if ( use_new_seek )
 972                         {
 973                                 codec_context->skip_loop_filter = AVDISCARD_NONREF;
 974                                 av_seek_frame( context, self->video_index, timestamp, AVSEEK_FLAG_BACKWARD );
 975                         }
 976                         else if ( req_position > 0 || self->last_position <= 0 )
 977                         {
 978                                 av_seek_frame( context, -1, timestamp, AVSEEK_FLAG_BACKWARD );
 979                         }
 980                         else
 981                         {
 982                                 // Re-open video stream when rewinding to beginning from somewhere else.
 983                                 // This is rather ugly, and I prefer not to do it this way, but ffmpeg is
 984                                 // not reliably seeking to the first frame across formats.
 985                                 reopen_video( self, producer );
 986                         }
 987
 988                         // Remove the cached info relating to the previous position
 989                         self->current_position = POSITION_INVALID;
 990                         self->last_position = POSITION_INVALID;
 991                         av_freep( &self->av_frame );
 992
 993                         if ( use_new_seek )
 994                         {
 995                                 // flush any pictures still in decode buffer
 996                                 avcodec_flush_buffers( codec_context );
 997                         }
 998                 }
 999         }
1000         return paused;
1001 }
1002
1003 /** Convert a frame position to a time code.
1004 */
1005
1006 static double producer_time_of_frame( mlt_producer producer, mlt_position position )
1007 {
1008         return ( double )position / mlt_producer_get_fps( producer );
1009 }
1010
1011 // Collect information about all audio streams
1012
1013 static void get_audio_streams_info( producer_avformat self )
1014 {
1015         // Fetch the audio format context
1016         AVFormatContext *context = self->audio_format;
1017         int i;
1018
1019         for ( i = 0;
1020                   i < context->nb_streams;
1021                   i++ )
1022         {
1023                 if ( context->streams[i]->codec->codec_type == CODEC_TYPE_AUDIO )
1024                 {
1025                         AVCodecContext *codec_context = context->streams[i]->codec;
1026                         AVCodec *codec = avcodec_find_decoder( codec_context->codec_id );
1027
1028                         // If we don't have a codec and we can't initialise it, we can't do much more...
1029                         avformat_lock( );
1030                         if ( codec && avcodec_open( codec_context, codec ) >= 0 )
1031                         {
1032                                 self->audio_streams++;
1033                                 self->audio_max_stream = i;
1034                                 self->total_channels += codec_context->channels;
1035                                 if ( codec_context->channels > self->max_channel )
1036                                         self->max_channel = codec_context->channels;
1037                                 if ( codec_context->sample_rate > self->max_frequency )
1038                                         self->max_frequency = codec_context->sample_rate;
1039                                 avcodec_close( codec_context );
1040                         }
1041                         avformat_unlock( );
1042                 }
1043         }
1044         mlt_log_verbose( NULL, "[producer avformat] audio: total_streams %d max_stream %d total_channels %d max_channels %d\n",
1045                 self->audio_streams, self->audio_max_stream, self->total_channels, self->max_channel );
1046
1047         // Other audio-specific initializations
1048         self->resample_factor = 1.0;
1049 }
1050
1051 static void set_luma_transfer( struct SwsContext *context, int colorspace, int use_full_range )
1052 {
1053 #if defined(SWSCALE) && (LIBSWSCALE_VERSION_INT >= ((0<<16)+(7<<8)+2))
1054         int *coefficients;
1055         const int *new_coefficients;
1056         int full_range;
1057         int brightness, contrast, saturation;
1058
1059         if ( sws_getColorspaceDetails( context, &coefficients, &full_range, &coefficients, &full_range,
1060                         &brightness, &contrast, &saturation ) != -1 )
1061         {
1062                 // Don't change these from defaults unless explicitly told to.
1063                 if ( use_full_range >= 0 )
1064                         full_range = use_full_range;
1065                 switch ( colorspace )
1066                 {
1067                 case 170:
1068                 case 470:
1069                 case 601:
1070                 case 624:
1071                         new_coefficients = sws_getCoefficients( SWS_CS_ITU601 );
1072                         break;
1073                 case 240:
1074                         new_coefficients = sws_getCoefficients( SWS_CS_SMPTE240M );
1075                         break;
1076                 case 709:
1077                         new_coefficients = sws_getCoefficients( SWS_CS_ITU709 );
1078                         break;
1079                 default:
1080                         new_coefficients = coefficients;
1081                         break;
1082                 }
1083                 sws_setColorspaceDetails( context, new_coefficients, full_range, new_coefficients, full_range,
1084                         brightness, contrast, saturation );
1085         }
1086 #endif
1087 }
1088
1089 static inline void convert_image( AVFrame *frame, uint8_t *buffer, int pix_fmt,
1090         mlt_image_format *format, int width, int height, int colorspace )
1091 {
1092 #ifdef SWSCALE
1093         int full_range = -1;
1094         int flags = SWS_BILINEAR | SWS_ACCURATE_RND;
1095
1096 #ifdef USE_MMX
1097         flags |= SWS_CPU_CAPS_MMX;
1098 #endif
1099 #ifdef USE_SSE
1100         flags |= SWS_CPU_CAPS_MMX2;
1101 #endif
1102
1103         if ( pix_fmt == PIX_FMT_RGB32 )
1104         {
1105                 *format = mlt_image_rgb24a;
1106                 struct SwsContext *context = sws_getContext( width, height, pix_fmt,
1107                         width, height, PIX_FMT_RGBA, flags, NULL, NULL, NULL);
1108                 AVPicture output;
1109                 avpicture_fill( &output, buffer, PIX_FMT_RGBA, width, height );
1110                 set_luma_transfer( context, colorspace, full_range );
1111                 sws_scale( context, (const uint8_t* const*) frame->data, frame->linesize, 0, height,
1112                         output.data, output.linesize);
1113                 sws_freeContext( context );
1114         }
1115         else if ( *format == mlt_image_yuv420p )
1116         {
1117                 struct SwsContext *context = sws_getContext( width, height, pix_fmt,
1118                         width, height, PIX_FMT_YUV420P, flags, NULL, NULL, NULL);
1119                 AVPicture output;
1120                 output.data[0] = buffer;
1121                 output.data[1] = buffer + width * height;
1122                 output.data[2] = buffer + ( 5 * width * height ) / 4;
1123                 output.linesize[0] = width;
1124                 output.linesize[1] = width >> 1;
1125                 output.linesize[2] = width >> 1;
1126                 set_luma_transfer( context, colorspace, full_range );
1127                 sws_scale( context, (const uint8_t* const*) frame->data, frame->linesize, 0, height,
1128                         output.data, output.linesize);
1129                 sws_freeContext( context );
1130         }
1131         else if ( *format == mlt_image_rgb24 )
1132         {
1133                 struct SwsContext *context = sws_getContext( width, height, pix_fmt,
1134                         width, height, PIX_FMT_RGB24, flags | SWS_FULL_CHR_H_INT, NULL, NULL, NULL);
1135                 AVPicture output;
1136                 avpicture_fill( &output, buffer, PIX_FMT_RGB24, width, height );
1137                 set_luma_transfer( context, colorspace, full_range );
1138                 sws_scale( context, (const uint8_t* const*) frame->data, frame->linesize, 0, height,
1139                         output.data, output.linesize);
1140                 sws_freeContext( context );
1141         }
1142         else if ( *format == mlt_image_rgb24a || *format == mlt_image_opengl )
1143         {
1144                 struct SwsContext *context = sws_getContext( width, height, pix_fmt,
1145                         width, height, PIX_FMT_RGBA, flags | SWS_FULL_CHR_H_INT, NULL, NULL, NULL);
1146                 AVPicture output;
1147                 avpicture_fill( &output, buffer, PIX_FMT_RGBA, width, height );
1148                 set_luma_transfer( context, colorspace, full_range );
1149                 sws_scale( context, (const uint8_t* const*) frame->data, frame->linesize, 0, height,
1150                         output.data, output.linesize);
1151                 sws_freeContext( context );
1152         }
1153         else
1154         {
1155                 struct SwsContext *context = sws_getContext( width, height, pix_fmt,
1156                         width, height, PIX_FMT_YUYV422, flags | SWS_FULL_CHR_H_INP, NULL, NULL, NULL);
1157                 AVPicture output;
1158                 avpicture_fill( &output, buffer, PIX_FMT_YUYV422, width, height );
1159                 set_luma_transfer( context, colorspace, full_range );
1160                 sws_scale( context, (const uint8_t* const*) frame->data, frame->linesize, 0, height,
1161                         output.data, output.linesize);
1162                 sws_freeContext( context );
1163         }
1164 #else
1165         if ( *format == mlt_image_yuv420p )
1166         {
1167                 AVPicture pict;
1168                 pict.data[0] = buffer;
1169                 pict.data[1] = buffer + width * height;
1170                 pict.data[2] = buffer + ( 5 * width * height ) / 4;
1171                 pict.linesize[0] = width;
1172                 pict.linesize[1] = width >> 1;
1173                 pict.linesize[2] = width >> 1;
1174                 img_convert( &pict, PIX_FMT_YUV420P, (AVPicture *)frame, pix_fmt, width, height );
1175         }
1176         else if ( *format == mlt_image_rgb24 )
1177         {
1178                 AVPicture output;
1179                 avpicture_fill( &output, buffer, PIX_FMT_RGB24, width, height );
1180                 img_convert( &output, PIX_FMT_RGB24, (AVPicture *)frame, pix_fmt, width, height );
1181         }
1182         else if ( format == mlt_image_rgb24a || format == mlt_image_opengl )
1183         {
1184                 AVPicture output;
1185                 avpicture_fill( &output, buffer, PIX_FMT_RGB32, width, height );
1186                 img_convert( &output, PIX_FMT_RGB32, (AVPicture *)frame, pix_fmt, width, height );
1187         }
1188         else
1189         {
1190                 AVPicture output;
1191                 avpicture_fill( &output, buffer, PIX_FMT_YUYV422, width, height );
1192                 img_convert( &output, PIX_FMT_YUYV422, (AVPicture *)frame, pix_fmt, width, height );
1193         }
1194 #endif
1195 }
1196
1197 /** Allocate the image buffer and set it on the frame.
1198 */
1199
1200 static int allocate_buffer( mlt_frame frame, AVCodecContext *codec_context, uint8_t **buffer, mlt_image_format *format, int *width, int *height )
1201 {
1202         int size = 0;
1203
1204         if ( codec_context->width == 0 || codec_context->height == 0 )
1205                 return size;
1206
1207         *width = codec_context->width;
1208         *height = codec_context->height;
1209
1210         if ( codec_context->pix_fmt == PIX_FMT_RGB32 )
1211                 size = *width * ( *height + 1 ) * 4;
1212         else
1213                 size = mlt_image_format_size( *format, *width, *height, NULL );
1214
1215         // Construct the output image
1216         *buffer = mlt_pool_alloc( size );
1217         if ( *buffer )
1218                 mlt_frame_set_image( frame, *buffer, size, mlt_pool_release );
1219         else
1220                 size = 0;
1221
1222         return size;
1223 }
1224
1225 /** Get an image from a frame.
1226 */
1227
1228 static int producer_get_image( mlt_frame frame, uint8_t **buffer, mlt_image_format *format, int *width, int *height, int writable )
1229 {
1230         // Get the producer
1231         producer_avformat self = mlt_frame_pop_service( frame );
1232         mlt_producer producer = self->parent;
1233
1234         // Get the properties from the frame
1235         mlt_properties frame_properties = MLT_FRAME_PROPERTIES( frame );
1236
1237         // Obtain the frame number of this frame
1238         mlt_position position = mlt_properties_get_position( frame_properties, "avformat_position" );
1239
1240         // Get the producer properties
1241         mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
1242
1243         pthread_mutex_lock( &self->video_mutex );
1244
1245         // Fetch the video format context
1246         AVFormatContext *context = self->video_format;
1247
1248         // Get the video stream
1249         AVStream *stream = context->streams[ self->video_index ];
1250
1251         // Get codec context
1252         AVCodecContext *codec_context = stream->codec;
1253
1254         // Get the image cache
1255         if ( ! self->image_cache && ! mlt_properties_get_int( properties, "noimagecache" ) )
1256                 self->image_cache = mlt_cache_init();
1257         if ( self->image_cache )
1258         {
1259                 mlt_cache_item item = mlt_cache_get( self->image_cache, (void*) position );
1260                 uint8_t *original = mlt_cache_item_data( item, (int*) format );
1261                 if ( original )
1262                 {
1263                         // Set the resolution
1264                         *width = codec_context->width;
1265                         *height = codec_context->height;
1266
1267                         // Workaround 1088 encodings missing cropping info.
1268                         if ( *height == 1088 && mlt_profile_dar( mlt_service_profile( MLT_PRODUCER_SERVICE( producer ) ) ) == 16.0/9.0 )
1269                                 *height = 1080;
1270
1271                         // Cache hit
1272                         int size = mlt_image_format_size( *format, *width, *height, NULL );
1273                         if ( writable )
1274                         {
1275                                 *buffer = mlt_pool_alloc( size );
1276                                 mlt_frame_set_image( frame, *buffer, size, mlt_pool_release );
1277                                 memcpy( *buffer, original, size );
1278                                 mlt_cache_item_close( item );
1279                         }
1280                         else
1281                         {
1282                                 *buffer = original;
1283                                 mlt_properties_set_data( frame_properties, "avformat.image_cache", item, 0, ( mlt_destructor )mlt_cache_item_close, NULL );
1284                                 mlt_frame_set_image( frame, *buffer, size, NULL );
1285                         }
1286                         self->got_picture = 1;
1287
1288                         goto exit_get_image;
1289                 }
1290         }
1291         // Cache miss
1292         int image_size = 0;
1293
1294         // Packet
1295         AVPacket pkt;
1296
1297         // Special case ffwd handling
1298         int ignore = 0;
1299
1300         // We may want to use the source fps if available
1301         double source_fps = mlt_properties_get_double( properties, "meta.media.frame_rate_num" ) /
1302                 mlt_properties_get_double( properties, "meta.media.frame_rate_den" );
1303
1304         // This is the physical frame position in the source
1305         int req_position = ( int )( position / mlt_producer_get_fps( producer ) * source_fps + 0.5 );
1306
1307         // Determines if we have to decode all frames in a sequence
1308         // Temporary hack to improve intra frame only
1309         int must_decode = strcmp( codec_context->codec->name, "dnxhd" ) &&
1310                                   strcmp( codec_context->codec->name, "dvvideo" ) &&
1311                                   strcmp( codec_context->codec->name, "huffyuv" ) &&
1312                                   strcmp( codec_context->codec->name, "mjpeg" ) &&
1313                                   strcmp( codec_context->codec->name, "rawvideo" );
1314
1315         // Turn on usage of new seek API and PTS for seeking
1316         int use_new_seek = self->seekable &&
1317                 codec_context->codec_id == CODEC_ID_H264 && !strcmp( context->iformat->name, "mpegts" );
1318         if ( mlt_properties_get( properties, "new_seek" ) )
1319                 use_new_seek = mlt_properties_get_int( properties, "new_seek" );
1320
1321         // Seek if necessary
1322         int paused = seek_video( self, position, req_position, must_decode, use_new_seek, &ignore );
1323
1324         // Seek might have reopened the file
1325         context = self->video_format;
1326         stream = context->streams[ self->video_index ];
1327         codec_context = stream->codec;
1328
1329         // Duplicate the last image if necessary
1330         if ( self->av_frame && self->av_frame->linesize[0] && self->got_picture && self->seekable
1331                  && ( paused
1332                           || self->current_position == req_position
1333                           || ( !use_new_seek && self->current_position > req_position ) ) )
1334         {
1335                 // Duplicate it
1336                 if ( ( image_size = allocate_buffer( frame, codec_context, buffer, format, width, height ) ) )
1337                 {
1338                         // Workaround 1088 encodings missing cropping info.
1339                         if ( *height == 1088 && mlt_profile_dar( mlt_service_profile( MLT_PRODUCER_SERVICE( producer ) ) ) == 16.0/9.0 )
1340                                 *height = 1080;
1341 #ifdef VDPAU
1342                         if ( self->vdpau && self->vdpau->buffer )
1343                         {
1344                                 AVPicture picture;
1345                                 picture.data[0] = self->vdpau->buffer;
1346                                 picture.data[2] = self->vdpau->buffer + codec_context->width * codec_context->height;
1347                                 picture.data[1] = self->vdpau->buffer + codec_context->width * codec_context->height * 5 / 4;
1348                                 picture.linesize[0] = codec_context->width;
1349                                 picture.linesize[1] = codec_context->width / 2;
1350                                 picture.linesize[2] = codec_context->width / 2;
1351                                 convert_image( (AVFrame*) &picture, *buffer,
1352                                         PIX_FMT_YUV420P, format, *width, *height, self->colorspace );
1353                         }
1354                         else
1355 #endif
1356                         convert_image( self->av_frame, *buffer, codec_context->pix_fmt,
1357                                 format, *width, *height, self->colorspace );
1358                 }
1359                 else
1360                         mlt_frame_get_image( frame, buffer, format, width, height, writable );
1361         }
1362         else
1363         {
1364                 int ret = 0;
1365                 int int_position = 0;
1366                 int decode_errors = 0;
1367                 int got_picture = 0;
1368
1369                 av_init_packet( &pkt );
1370
1371                 // Construct an AVFrame for YUV422 conversion
1372                 if ( !self->av_frame )
1373                         self->av_frame = avcodec_alloc_frame( );
1374
1375                 while( ret >= 0 && !got_picture )
1376                 {
1377                         // Read a packet
1378                         pthread_mutex_lock( &self->packets_mutex );
1379                         if ( mlt_deque_count( self->vpackets ) )
1380                         {
1381                                 AVPacket *tmp = (AVPacket*) mlt_deque_pop_front( self->vpackets );
1382                                 pkt = *tmp;
1383                                 free( tmp );
1384                         }
1385                         else
1386                         {
1387                                 ret = av_read_frame( context, &pkt );
1388                                 if ( ret >= 0 && !self->seekable && pkt.stream_index == self->audio_index )
1389                                 {
1390                                         if ( !av_dup_packet( &pkt ) )
1391                                         {
1392                                                 AVPacket *tmp = malloc( sizeof(AVPacket) );
1393                                                 *tmp = pkt;
1394                                                 mlt_deque_push_back( self->apackets, tmp );
1395                                         }
1396                                 }
1397                         }
1398                         pthread_mutex_unlock( &self->packets_mutex );
1399
1400                         // We only deal with video from the selected video_index
1401                         if ( ret >= 0 && pkt.stream_index == self->video_index && pkt.size > 0 )
1402                         {
1403                                 // Determine time code of the packet
1404                                 if ( use_new_seek )
1405                                 {
1406                                         int64_t pts = pkt.pts;
1407                                         if ( self->first_pts > 0 )
1408                                                 pts -= self->first_pts;
1409                                         else if ( context->start_time != AV_NOPTS_VALUE )
1410                                                 pts -= context->start_time;
1411                                         int_position = ( int )( av_q2d( stream->time_base ) * pts * source_fps + 0.1 );
1412                                         if ( pkt.pts == AV_NOPTS_VALUE )
1413                                         {
1414                                                 self->invalid_pts_counter++;
1415                                                 if ( self->invalid_pts_counter > 20 )
1416                                                 {
1417                                                         mlt_log_panic( MLT_PRODUCER_SERVICE(producer), "\ainvalid PTS; DISABLING NEW_SEEK!\n" );
1418                                                         mlt_properties_set_int( properties, "new_seek", 0 );
1419                                                         int_position = req_position;
1420                                                         use_new_seek = 0;
1421                                                 }
1422                                         }
1423                                         else
1424                                         {
1425                                                 self->invalid_pts_counter = 0;
1426                                         }
1427                                         mlt_log_debug( MLT_PRODUCER_SERVICE(producer), "pkt.pts %"PRId64" req_pos %d cur_pos %d pkt_pos %d\n",
1428                                                 pkt.pts, req_position, self->current_position, int_position );
1429                                 }
1430                                 else
1431                                 {
1432                                         if ( self->seekable && pkt.dts != AV_NOPTS_VALUE )
1433                                         {
1434                                                 int_position = ( int )( av_q2d( stream->time_base ) * pkt.dts * source_fps + 0.5 );
1435                                                 if ( context->start_time != AV_NOPTS_VALUE )
1436                                                         int_position -= ( int )( context->start_time * source_fps / AV_TIME_BASE + 0.5 );
1437                                                 if ( int_position == self->last_position )
1438                                                         int_position = self->last_position + 1;
1439                                         }
1440                                         else
1441                                         {
1442                                                 int_position = req_position;
1443                                         }
1444                                         mlt_log_debug( MLT_PRODUCER_SERVICE(producer), "pkt.dts %"PRId64" req_pos %d cur_pos %d pkt_pos %d\n",
1445                                                 pkt.dts, req_position, self->current_position, int_position );
1446                                         // Make a dumb assumption on streams that contain wild timestamps
1447                                         if ( abs( req_position - int_position ) > 999 )
1448                                         {
1449                                                 int_position = req_position;
1450                                                 mlt_log_debug( MLT_PRODUCER_SERVICE(producer), " WILD TIMESTAMP!" );
1451                                         }
1452                                 }
1453                                 self->last_position = int_position;
1454
1455                                 // Decode the image
1456                                 if ( must_decode || int_position >= req_position )
1457                                 {
1458 #ifdef VDPAU
1459                                         if ( g_vdpau && self->vdpau )
1460                                         {
1461                                                 if ( g_vdpau->producer != self )
1462                                                 {
1463                                                         vdpau_decoder_close();
1464                                                         vdpau_decoder_init( self );
1465                                                 }
1466                                                 if ( self->vdpau )
1467                                                         self->vdpau->is_decoded = 0;
1468                                         }
1469 #endif
1470                                         codec_context->reordered_opaque = pkt.pts;
1471                                         if ( int_position >= req_position )
1472                                                 codec_context->skip_loop_filter = AVDISCARD_NONE;
1473 #if (LIBAVCODEC_VERSION_INT >= ((52<<16)+(26<<8)+0))
1474                                         ret = avcodec_decode_video2( codec_context, self->av_frame, &got_picture, &pkt );
1475 #else
1476                                         ret = avcodec_decode_video( codec_context, self->av_frame, &got_picture, pkt.data, pkt.size );
1477 #endif
1478                                         // Note: decode may fail at the beginning of MPEGfile (B-frames referencing before first I-frame), so allow a few errors.
1479                                         if ( ret < 0 )
1480                                         {
1481                                                 if ( ++decode_errors <= 10 )
1482                                                         ret = 0;
1483                                         }
1484                                         else
1485                                         {
1486                                                 decode_errors = 0;
1487                                         }
1488                                 }
1489
1490                                 if ( got_picture )
1491                                 {
1492                                         if ( use_new_seek )
1493                                         {
1494                                                 // Determine time code of the packet
1495                                                 int64_t pts = self->av_frame->reordered_opaque;
1496                                                 if ( self->first_pts > 0 )
1497                                                         pts -= self->first_pts;
1498                                                 else if ( context->start_time != AV_NOPTS_VALUE )
1499                                                         pts -= context->start_time;
1500                                                 int_position = ( int )( av_q2d( stream->time_base) * pts * source_fps + 0.1 );
1501                                                 mlt_log_debug( MLT_PRODUCER_SERVICE(producer), "got frame %d, key %d\n", int_position, self->av_frame->key_frame );
1502                                         }
1503                                         // Handle ignore
1504                                         if ( int_position < req_position )
1505                                         {
1506                                                 ignore = 0;
1507                                                 got_picture = 0;
1508                                         }
1509                                         else if ( int_position >= req_position )
1510                                         {
1511                                                 ignore = 0;
1512                                                 codec_context->skip_loop_filter = AVDISCARD_NONE;
1513                                         }
1514                                         else if ( ignore -- )
1515                                         {
1516                                                 got_picture = 0;
1517                                         }
1518                                 }
1519                                 mlt_log_debug( MLT_PRODUCER_SERVICE(producer), " got_pic %d key %d\n", got_picture, pkt.flags & PKT_FLAG_KEY );
1520                         }
1521
1522                         // Now handle the picture if we have one
1523                         if ( got_picture )
1524                         {
1525                                 if ( ( image_size = allocate_buffer( frame, codec_context, buffer, format, width, height ) ) )
1526                                 {
1527                                         // Workaround 1088 encodings missing cropping info.
1528                                         if ( *height == 1088 && mlt_profile_dar( mlt_service_profile( MLT_PRODUCER_SERVICE( producer ) ) ) == 16.0/9.0 )
1529                                                 *height = 1080;
1530 #ifdef VDPAU
1531                                         if ( self->vdpau )
1532                                         {
1533                                                 if ( self->vdpau->is_decoded )
1534                                                 {
1535                                                         struct vdpau_render_state *render = (struct vdpau_render_state*) self->av_frame->data[0];
1536                                                         void *planes[3];
1537                                                         uint32_t pitches[3];
1538                                                         VdpYCbCrFormat dest_format = VDP_YCBCR_FORMAT_YV12;
1539
1540                                                         if ( !self->vdpau->buffer )
1541                                                                 self->vdpau->buffer = mlt_pool_alloc( codec_context->width * codec_context->height * 3 / 2 );
1542                                                         self->av_frame->data[0] = planes[0] = self->vdpau->buffer;
1543                                                         self->av_frame->data[2] = planes[1] = self->vdpau->buffer + codec_context->width * codec_context->height;
1544                                                         self->av_frame->data[1] = planes[2] = self->vdpau->buffer + codec_context->width * codec_context->height * 5 / 4;
1545                                                         self->av_frame->linesize[0] = pitches[0] = codec_context->width;
1546                                                         self->av_frame->linesize[1] = pitches[1] = codec_context->width / 2;
1547                                                         self->av_frame->linesize[2] = pitches[2] = codec_context->width / 2;
1548
1549                                                         VdpStatus status = vdp_surface_get_bits( render->surface, dest_format, planes, pitches );
1550                                                         if ( status == VDP_STATUS_OK )
1551                                                         {
1552                                                                 convert_image( self->av_frame, *buffer, PIX_FMT_YUV420P,
1553                                                                         format, *width, *height, self->colorspace );
1554                                                         }
1555                                                         else
1556                                                         {
1557                                                                 mlt_log_error( MLT_PRODUCER_SERVICE(producer), "VDPAU Error: %s\n", vdp_get_error_string( status ) );
1558                                                                 image_size = self->vdpau->is_decoded = 0;
1559                                                         }
1560                                                 }
1561                                                 else
1562                                                 {
1563                                                         mlt_log_error( MLT_PRODUCER_SERVICE(producer), "VDPAU error in VdpDecoderRender\n" );
1564                                                         image_size = got_picture = 0;
1565                                                 }
1566                                         }
1567                                         else
1568 #endif
1569                                         convert_image( self->av_frame, *buffer, codec_context->pix_fmt,
1570                                                 format, *width, *height, self->colorspace );
1571                                         self->top_field_first |= self->av_frame->top_field_first;
1572                                         self->current_position = int_position;
1573                                         self->got_picture = 1;
1574                                 }
1575                                 else
1576                                 {
1577                                         got_picture = 0;
1578                                 }
1579                         }
1580                         if ( self->seekable || pkt.stream_index != self->audio_index )
1581                                 av_free_packet( &pkt );
1582                 }
1583         }
1584
1585         if ( self->got_picture && image_size > 0 && self->image_cache )
1586         {
1587                 // Copy buffer to image cache
1588                 uint8_t *image = mlt_pool_alloc( image_size );
1589                 memcpy( image, *buffer, image_size );
1590                 mlt_cache_put( self->image_cache, (void*) position, image, *format, mlt_pool_release );
1591         }
1592         // Try to duplicate last image if there was a decoding failure
1593         else if ( !image_size && self->av_frame && self->av_frame->linesize[0] )
1594         {
1595                 // Duplicate it
1596                 if ( ( image_size = allocate_buffer( frame, codec_context, buffer, format, width, height ) ) )
1597                 {
1598                         // Workaround 1088 encodings missing cropping info.
1599                         if ( *height == 1088 && mlt_profile_dar( mlt_service_profile( MLT_PRODUCER_SERVICE( producer ) ) ) == 16.0/9.0 )
1600                                 *height = 1080;
1601 #ifdef VDPAU
1602                         if ( self->vdpau && self->vdpau->buffer )
1603                         {
1604                                 AVPicture picture;
1605                                 picture.data[0] = self->vdpau->buffer;
1606                                 picture.data[2] = self->vdpau->buffer + codec_context->width * codec_context->height;
1607                                 picture.data[1] = self->vdpau->buffer + codec_context->width * codec_context->height * 5 / 4;
1608                                 picture.linesize[0] = codec_context->width;
1609                                 picture.linesize[1] = codec_context->width / 2;
1610                                 picture.linesize[2] = codec_context->width / 2;
1611                                 convert_image( (AVFrame*) &picture, *buffer,
1612                                         PIX_FMT_YUV420P, format, *width, *height, self->colorspace );
1613                         }
1614                         else
1615 #endif
1616                         convert_image( self->av_frame, *buffer, codec_context->pix_fmt,
1617                                 format, *width, *height, self->colorspace );
1618                         self->got_picture = 1;
1619                 }
1620                 else
1621                         mlt_frame_get_image( frame, buffer, format, width, height, writable );
1622         }
1623
1624         // Regardless of speed, we expect to get the next frame (cos we ain't too bright)
1625         self->video_expected = position + 1;
1626
1627 exit_get_image:
1628
1629         pthread_mutex_unlock( &self->video_mutex );
1630
1631         // Set the progressive flag
1632         if ( mlt_properties_get( properties, "force_progressive" ) )
1633                 mlt_properties_set_int( frame_properties, "progressive", !!mlt_properties_get_int( properties, "force_progressive" ) );
1634         else if ( self->av_frame )
1635                 mlt_properties_set_int( frame_properties, "progressive", !self->av_frame->interlaced_frame );
1636
1637         // Set the field order property for this frame
1638         if ( mlt_properties_get( properties, "force_tff" ) )
1639                 mlt_properties_set_int( frame_properties, "top_field_first", !!mlt_properties_get_int( properties, "force_tff" ) );
1640         else
1641                 mlt_properties_set_int( frame_properties, "top_field_first", self->top_field_first );
1642
1643         // Set immutable properties of the selected track's (or overridden) source attributes.
1644         mlt_service_lock( MLT_PRODUCER_SERVICE( producer ) );
1645         mlt_properties_set_int( properties, "meta.media.top_field_first", self->top_field_first );
1646         mlt_properties_set_int( properties, "meta.media.progressive", mlt_properties_get_int( frame_properties, "progressive" ) );
1647         mlt_service_unlock( MLT_PRODUCER_SERVICE( producer ) );
1648
1649         return !self->got_picture;
1650 }
1651
1652 /** Process properties as AVOptions and apply to AV context obj
1653 */
1654
1655 static void apply_properties( void *obj, mlt_properties properties, int flags )
1656 {
1657         int i;
1658         int count = mlt_properties_count( properties );
1659         for ( i = 0; i < count; i++ )
1660         {
1661                 const char *opt_name = mlt_properties_get_name( properties, i );
1662                 const AVOption *opt = av_find_opt( obj, opt_name, NULL, flags, flags );
1663                 if ( opt_name && mlt_properties_get( properties, opt_name ) )
1664                 {
1665                         if ( opt )
1666 #if LIBAVCODEC_VERSION_INT >= ((52<<16)+(7<<8)+0)
1667                                 av_set_string3( obj, opt_name, mlt_properties_get( properties, opt_name), 0, NULL );
1668 #elif LIBAVCODEC_VERSION_INT >= ((51<<16)+(59<<8)+0)
1669                                 av_set_string2( obj, opt_name, mlt_properties_get( properties, opt_name), 0 );
1670 #else
1671                                 av_set_string( obj, opt_name, mlt_properties_get( properties, opt_name) );
1672 #endif
1673                 }
1674         }
1675 }
1676
1677 /** Initialize the video codec context.
1678  */
1679
1680 static int video_codec_init( producer_avformat self, int index, mlt_properties properties )
1681 {
1682         // Initialise the codec if necessary
1683         if ( !self->video_codec )
1684         {
1685                 // Get the video stream
1686                 AVStream *stream = self->video_format->streams[ index ];
1687
1688                 // Get codec context
1689                 AVCodecContext *codec_context = stream->codec;
1690
1691                 // Find the codec
1692                 AVCodec *codec = avcodec_find_decoder( codec_context->codec_id );
1693 #ifdef VDPAU
1694                 if ( codec_context->codec_id == CODEC_ID_H264 )
1695                 {
1696                         if ( ( codec = avcodec_find_decoder_by_name( "h264_vdpau" ) ) )
1697                         {
1698                                 if ( vdpau_init( self ) )
1699                                 {
1700                                         self->video_codec = codec_context;
1701                                         if ( !vdpau_decoder_init( self ) )
1702                                                 vdpau_decoder_close();
1703                                 }
1704                         }
1705                         if ( !self->vdpau )
1706                                 codec = avcodec_find_decoder( codec_context->codec_id );
1707                 }
1708 #endif
1709
1710                 // Initialise multi-threading
1711                 int thread_count = mlt_properties_get_int( properties, "threads" );
1712                 if ( thread_count == 0 && getenv( "MLT_AVFORMAT_THREADS" ) )
1713                         thread_count = atoi( getenv( "MLT_AVFORMAT_THREADS" ) );
1714                 if ( thread_count > 1 )
1715                         codec_context->thread_count = thread_count;
1716
1717                 // If we don't have a codec and we can't initialise it, we can't do much more...
1718                 avformat_lock( );
1719                 if ( codec && avcodec_open( codec_context, codec ) >= 0 )
1720                 {
1721                         // Now store the codec with its destructor
1722                         self->video_codec = codec_context;
1723                 }
1724                 else
1725                 {
1726                         // Remember that we can't use this later
1727                         self->video_index = -1;
1728                         avformat_unlock( );
1729                         return 0;
1730                 }
1731                 avformat_unlock( );
1732
1733                 // Process properties as AVOptions
1734                 apply_properties( codec_context, properties, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM );
1735 #if LIBAVCODEC_VERSION_MAJOR > 52
1736                 if ( codec->priv_class && codec_context->priv_data )
1737                         apply_properties( codec_context->priv_data, properties, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM );
1738 #endif
1739
1740                 // Reset some image properties
1741                 mlt_properties_set_int( properties, "width", self->video_codec->width );
1742                 mlt_properties_set_int( properties, "height", self->video_codec->height );
1743                 // For DV, we'll just use the saved aspect ratio
1744                 if ( codec_context->codec_id != CODEC_ID_DVVIDEO )
1745                         get_aspect_ratio( properties, stream, self->video_codec, NULL );
1746
1747                 // Determine the fps first from the codec
1748                 double source_fps = (double) self->video_codec->time_base.den /
1749                                                                    ( self->video_codec->time_base.num == 0 ? 1 : self->video_codec->time_base.num );
1750
1751                 if ( mlt_properties_get( properties, "force_fps" ) )
1752                 {
1753                         source_fps = mlt_properties_get_double( properties, "force_fps" );
1754                         stream->time_base = av_d2q( source_fps, 1024 );
1755                         mlt_properties_set_int( properties, "meta.media.frame_rate_num", stream->time_base.num );
1756                         mlt_properties_set_int( properties, "meta.media.frame_rate_den", stream->time_base.den );
1757                 }
1758                 else
1759                 {
1760                         // If the muxer reports a frame rate different than the codec
1761 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(42<<8)+0)
1762                         double muxer_fps = av_q2d( stream->avg_frame_rate );
1763                         if ( isnan( muxer_fps ) || muxer_fps == 0 )
1764                                 muxer_fps = av_q2d( stream->r_frame_rate );
1765 #else
1766                         double muxer_fps = av_q2d( stream->r_frame_rate );
1767 #endif
1768                         // Choose the lesser - the wrong tends to be off by some multiple of 10
1769                         source_fps = FFMIN( source_fps, muxer_fps );
1770                         if ( source_fps >= 1.0 && ( source_fps < muxer_fps || isnan( muxer_fps ) ) )
1771                         {
1772                                 mlt_properties_set_int( properties, "meta.media.frame_rate_num", self->video_codec->time_base.den );
1773                                 mlt_properties_set_int( properties, "meta.media.frame_rate_den", self->video_codec->time_base.num == 0 ? 1 : self->video_codec->time_base.num );
1774                         }
1775                         else if ( muxer_fps > 0 )
1776                         {
1777                                 AVRational frame_rate = stream->r_frame_rate;
1778                                 // With my samples when r_frame_rate != 1000 but avg_frame_rate is valid,
1779                                 // avg_frame_rate gives some approximate value that does not well match the media.
1780                                 // Also, on my sample where r_frame_rate = 1000, using avg_frame_rate directly
1781                                 // results in some very choppy output, but some value slightly different works
1782                                 // great.
1783 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(42<<8)+0)
1784                                 if ( av_q2d( stream->r_frame_rate ) >= 1000 && av_q2d( stream->avg_frame_rate ) > 0 )
1785                                         frame_rate = av_d2q( av_q2d( stream->avg_frame_rate ), 1024 );
1786 #endif
1787                                 mlt_properties_set_int( properties, "meta.media.frame_rate_num", frame_rate.num );
1788                                 mlt_properties_set_int( properties, "meta.media.frame_rate_den", frame_rate.den );
1789                         }
1790                         else
1791                         {
1792                                 source_fps = mlt_producer_get_fps( self->parent );
1793                                 AVRational frame_rate = av_d2q( source_fps, 255 );
1794                                 mlt_properties_set_int( properties, "meta.media.frame_rate_num", frame_rate.num );
1795                                 mlt_properties_set_int( properties, "meta.media.frame_rate_den", frame_rate.den );
1796                         }
1797                 }
1798
1799                 // source_fps is deprecated in favor of meta.media.frame_rate_num and .frame_rate_den
1800                 if ( source_fps > 0 )
1801                         mlt_properties_set_double( properties, "source_fps", source_fps );
1802                 else
1803                         mlt_properties_set_double( properties, "source_fps", mlt_producer_get_fps( self->parent ) );
1804
1805                 // Set the YUV colorspace from override or detect
1806                 self->colorspace = mlt_properties_get_int( properties, "force_colorspace" );
1807 #if LIBAVCODEC_VERSION_INT > ((52<<16)+(28<<8)+0)
1808                 if ( ! self->colorspace )
1809                 {
1810                         switch ( self->video_codec->colorspace )
1811                         {
1812                         case AVCOL_SPC_SMPTE240M:
1813                                 self->colorspace = 240;
1814                                 break;
1815                         case AVCOL_SPC_BT470BG:
1816                         case AVCOL_SPC_SMPTE170M:
1817                                 self->colorspace = 601;
1818                                 break;
1819                         case AVCOL_SPC_BT709:
1820                                 self->colorspace = 709;
1821                                 break;
1822                         default:
1823                                 // This is a heuristic Charles Poynton suggests in "Digital Video and HDTV"
1824                                 self->colorspace = self->video_codec->width * self->video_codec->height > 750000 ? 709 : 601;
1825                                 break;
1826                         }
1827                 }
1828 #endif
1829                 // Let apps get chosen colorspace
1830                 mlt_properties_set_int( properties, "meta.media.colorspace", self->colorspace );
1831         }
1832         return self->video_codec && self->video_index > -1;
1833 }
1834
1835 /** Set up video handling.
1836 */
1837
1838 static void producer_set_up_video( producer_avformat self, mlt_frame frame )
1839 {
1840         // Get the producer
1841         mlt_producer producer = self->parent;
1842
1843         // Get the properties
1844         mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
1845
1846         // Fetch the video format context
1847         AVFormatContext *context = self->video_format;
1848
1849         // Get the video_index
1850         int index = mlt_properties_get_int( properties, "video_index" );
1851
1852         // Reopen the file if necessary
1853         if ( !context && index > -1 )
1854         {
1855                 producer_open( self, mlt_service_profile( MLT_PRODUCER_SERVICE(producer) ),
1856                         mlt_properties_get( properties, "resource" ) );
1857                 context = self->video_format;
1858         }
1859
1860         // Exception handling for video_index
1861         if ( context && index >= (int) context->nb_streams )
1862         {
1863                 // Get the last video stream
1864                 for ( index = context->nb_streams - 1;
1865                           index >= 0 && context->streams[ index ]->codec->codec_type != CODEC_TYPE_VIDEO;
1866                           index-- );
1867                 mlt_properties_set_int( properties, "video_index", index );
1868         }
1869         if ( context && index > -1 && context->streams[ index ]->codec->codec_type != CODEC_TYPE_VIDEO )
1870         {
1871                 // Invalidate the video stream
1872                 index = -1;
1873                 mlt_properties_set_int( properties, "video_index", index );
1874         }
1875
1876         // Update the video properties if the index changed
1877         if ( index != self->video_index )
1878         {
1879                 // Reset the video properties if the index changed
1880                 self->video_index = index;
1881                 if ( self->video_codec )
1882                 {
1883                         avformat_lock();
1884                         avcodec_close( self->video_codec );
1885                         avformat_unlock();
1886                 }
1887                 self->video_codec = NULL;
1888         }
1889
1890         // Get the frame properties
1891         mlt_properties frame_properties = MLT_FRAME_PROPERTIES( frame );
1892
1893         // Get the codec
1894         if ( context && index > -1 && video_codec_init( self, index, properties ) )
1895         {
1896                 // Set the frame properties
1897                 double force_aspect_ratio = mlt_properties_get_double( properties, "force_aspect_ratio" );
1898                 double aspect_ratio = ( force_aspect_ratio > 0.0 ) ?
1899                         force_aspect_ratio : mlt_properties_get_double( properties, "aspect_ratio" );
1900
1901                 // Set the width and height
1902                 mlt_properties_set_int( frame_properties, "width", self->video_codec->width );
1903                 mlt_properties_set_int( frame_properties, "height", self->video_codec->height );
1904                 // real_width and real_height are deprecated in favor of meta.media.width and .height
1905                 mlt_properties_set_int( properties, "meta.media.width", self->video_codec->width );
1906                 mlt_properties_set_int( properties, "meta.media.height", self->video_codec->height );
1907                 mlt_properties_set_int( frame_properties, "real_width", self->video_codec->width );
1908                 mlt_properties_set_int( frame_properties, "real_height", self->video_codec->height );
1909                 mlt_properties_set_double( frame_properties, "aspect_ratio", aspect_ratio );
1910                 mlt_properties_set_int( frame_properties, "colorspace", self->colorspace );
1911
1912                 // Workaround 1088 encodings missing cropping info.
1913                 if ( self->video_codec->height == 1088 && mlt_profile_dar( mlt_service_profile( MLT_PRODUCER_SERVICE( producer ) ) ) == 16.0/9.0 )
1914                 {
1915                         mlt_properties_set_int( properties, "meta.media.height", 1080 );
1916                         mlt_properties_set_int( frame_properties, "real_height", 1080 );
1917                 }
1918
1919                 // Add our image operation
1920                 mlt_frame_push_service( frame, self );
1921                 mlt_frame_push_get_image( frame, producer_get_image );
1922         }
1923         else
1924         {
1925                 // If something failed, use test card image
1926                 mlt_properties_set_int( frame_properties, "test_image", 1 );
1927         }
1928 }
1929
1930 static int seek_audio( producer_avformat self, mlt_position position, double timecode, int *ignore )
1931 {
1932         int paused = 0;
1933
1934         // Seek if necessary
1935         if ( self->seekable && position != self->audio_expected )
1936         {
1937                 if ( position + 1 == self->audio_expected )
1938                 {
1939                         // We're paused - silence required
1940                         paused = 1;
1941                 }
1942                 else if ( !self->seekable && position > self->audio_expected && ( position - self->audio_expected ) < 250 )
1943                 {
1944                         // Fast forward - seeking is inefficient for small distances - just ignore following frames
1945                         *ignore = position - self->audio_expected;
1946                 }
1947                 else if ( position < self->audio_expected || position - self->audio_expected >= 12 )
1948                 {
1949                         AVFormatContext *context = self->audio_format;
1950                         int64_t timestamp = ( int64_t )( timecode * AV_TIME_BASE + 0.5 );
1951                         if ( context->start_time != AV_NOPTS_VALUE )
1952                                 timestamp += context->start_time;
1953                         if ( timestamp < 0 )
1954                                 timestamp = 0;
1955
1956                         // Set to the real timecode
1957                         if ( av_seek_frame( context, -1, timestamp, AVSEEK_FLAG_BACKWARD ) != 0 )
1958                                 paused = 1;
1959
1960                         // Clear the usage in the audio buffer
1961                         int i = MAX_AUDIO_STREAMS + 1;
1962                         while ( --i )
1963                                 self->audio_used[i - 1] = 0;
1964                 }
1965         }
1966         return paused;
1967 }
1968
1969 static int sample_bytes( AVCodecContext *context )
1970 {
1971 #if LIBAVCODEC_VERSION_MAJOR > 52
1972         return av_get_bits_per_sample_fmt( context->sample_fmt ) / 8;
1973 #else
1974         return av_get_bits_per_sample_format( context->sample_fmt ) / 8;
1975 #endif
1976 }
1977
1978 static int decode_audio( producer_avformat self, int *ignore, AVPacket pkt, int channels, int samples, double timecode, double fps )
1979 {
1980         // Fetch the audio_format
1981         AVFormatContext *context = self->audio_format;
1982
1983         // Get the current stream index
1984         int index = pkt.stream_index;
1985
1986         // Get codec context
1987         AVCodecContext *codec_context = self->audio_codec[ index ];
1988
1989         // Obtain the resample context if it exists (not always needed)
1990         ReSampleContext *resample = self->audio_resample[ index ];
1991
1992         // Obtain the audio buffers
1993         uint8_t *audio_buffer = self->audio_buffer[ index ];
1994         uint8_t *decode_buffer = self->decode_buffer[ index ];
1995
1996         int audio_used = self->audio_used[ index ];
1997         uint8_t *ptr = pkt.data;
1998         int len = pkt.size;
1999         int ret = 0;
2000
2001         while ( ptr && ret >= 0 && len > 0 )
2002         {
2003                 int sizeof_sample = resample? sizeof( int16_t ) : sample_bytes( codec_context );
2004                 int data_size = self->audio_buffer_size[ index ];
2005
2006                 // Decode the audio
2007 #if (LIBAVCODEC_VERSION_INT >= ((52<<16)+(26<<8)+0))
2008                 ret = avcodec_decode_audio3( codec_context, (int16_t*) decode_buffer, &data_size, &pkt );
2009 #elif (LIBAVCODEC_VERSION_INT >= ((51<<16)+(29<<8)+0))
2010                 ret = avcodec_decode_audio2( codec_context, decode_buffer, &data_size, ptr, len );
2011 #else
2012                 ret = avcodec_decode_audio( codec_context, decode_buffer, &data_size, ptr, len );
2013 #endif
2014                 if ( ret < 0 )
2015                 {
2016                         mlt_log_warning( MLT_PRODUCER_SERVICE(self->parent), "audio decoding error %d\n", ret );
2017                         break;
2018                 }
2019
2020                 pkt.size = len -= ret;
2021                 pkt.data = ptr += ret;
2022
2023                 // If decoded successfully
2024                 if ( data_size > 0 )
2025                 {
2026                         // Figure out how many samples will be needed after resampling
2027                         int convert_samples = data_size / codec_context->channels / sample_bytes( codec_context );
2028                         int samples_needed = self->resample_factor * convert_samples;
2029
2030                         // Resize audio buffer to prevent overflow
2031                         if ( ( audio_used + samples_needed ) * channels * sizeof_sample > self->audio_buffer_size[ index ] )
2032                         {
2033                                 self->audio_buffer_size[ index ] = ( audio_used + samples_needed * 2 ) * channels * sizeof_sample;
2034                                 audio_buffer = self->audio_buffer[ index ] = mlt_pool_realloc( audio_buffer, self->audio_buffer_size[ index ] );
2035                         }
2036                         if ( resample )
2037                         {
2038                                 // Copy to audio buffer while resampling
2039                                 uint8_t *source = decode_buffer;
2040                                 uint8_t *dest = &audio_buffer[ audio_used * channels * sizeof_sample ];
2041                                 audio_used += audio_resample( resample, (short*) dest, (short*) source, convert_samples );
2042                         }
2043                         else
2044                         {
2045                                 // Straight copy to audio buffer
2046                                 memcpy( &audio_buffer[ audio_used * codec_context->channels * sizeof_sample ], decode_buffer, data_size );
2047                                 audio_used += convert_samples;
2048                         }
2049
2050                         // Handle ignore
2051                         while ( *ignore && audio_used > samples )
2052                         {
2053                                 *ignore -= 1;
2054                                 audio_used -= samples;
2055                                 memmove( audio_buffer, &audio_buffer[ samples * (resample? channels : codec_context->channels) * sizeof_sample ],
2056                                                  audio_used * sizeof_sample );
2057                         }
2058                 }
2059         }
2060
2061         // If we're behind, ignore this packet
2062         if ( pkt.pts >= 0 )
2063         {
2064                 double current_pts = av_q2d( context->streams[ index ]->time_base ) * pkt.pts;
2065                 int req_position = ( int )( timecode * fps + 0.5 );
2066                 int int_position = ( int )( current_pts * fps + 0.5 );
2067                 if ( context->start_time != AV_NOPTS_VALUE )
2068                         int_position -= ( int )( fps * context->start_time / AV_TIME_BASE + 0.5 );
2069
2070                 if ( self->seekable && *ignore == 0 )
2071                 {
2072                         if ( int_position < req_position )
2073                                 // We are behind, so skip some
2074                                 *ignore = 1;
2075
2076                         // We use nb_streams in this test because the tolerance is dependent
2077                         // on the interleaving of all streams esp. when there is more than
2078                         // one audio stream.
2079                         else if ( int_position > req_position + context->nb_streams )
2080                                 // We are ahead, so seek backwards some more
2081                                 seek_audio( self, req_position, timecode - 1.0, ignore );
2082                 }
2083         }
2084
2085         self->audio_used[ index ] = audio_used;
2086
2087         return ret;
2088 }
2089
2090 /** Get the audio from a frame.
2091 */
2092 static int producer_get_audio( mlt_frame frame, void **buffer, mlt_audio_format *format, int *frequency, int *channels, int *samples )
2093 {
2094         // Get the producer
2095         producer_avformat self = mlt_frame_pop_audio( frame );
2096
2097         pthread_mutex_lock( &self->audio_mutex );
2098
2099         // Obtain the frame number of this frame
2100         mlt_position position = mlt_properties_get_position( MLT_FRAME_PROPERTIES( frame ), "avformat_position" );
2101
2102         // Calculate the real time code
2103         double real_timecode = producer_time_of_frame( self->parent, position );
2104
2105         // Get the producer fps
2106         double fps = mlt_producer_get_fps( self->parent );
2107
2108         // Number of frames to ignore (for ffwd)
2109         int ignore[ MAX_AUDIO_STREAMS ] = { 0 };
2110
2111         // Flag for paused (silence)
2112         int paused = seek_audio( self, position, real_timecode, &ignore[0] );
2113
2114         // Initialize ignore for all streams from the seek return value
2115         int i = MAX_AUDIO_STREAMS;
2116         while ( i-- )
2117                 ignore[i] = ignore[0];
2118
2119         // Fetch the audio_format
2120         AVFormatContext *context = self->audio_format;
2121
2122         int sizeof_sample = sizeof( int16_t );
2123
2124         // Determine the tracks to use
2125         int index = self->audio_index;
2126         int index_max = self->audio_index + 1;
2127         if ( self->audio_index == INT_MAX )
2128         {
2129                 index = 0;
2130                 index_max = context->nb_streams;
2131                 *channels = self->total_channels;
2132                 *samples = *samples * FFMAX( self->max_frequency, *frequency ) / *frequency;
2133                 *frequency = FFMAX( self->max_frequency, *frequency );
2134         }
2135
2136         // Initialize the resamplers and buffers
2137         for ( ; index < index_max; index++ )
2138         {
2139                 // Get codec context
2140                 AVCodecContext *codec_context = self->audio_codec[ index ];
2141
2142                 if ( codec_context && !self->audio_buffer[ index ] )
2143                 {
2144                         // Check for resample and create if necessary
2145                         if ( codec_context->channels <= 2 )
2146                         {
2147                                 // Determine by how much resampling will increase number of samples
2148                                 double resample_factor = self->audio_index == INT_MAX ? 1 : (double) *channels / codec_context->channels;
2149                                 resample_factor *= (double) *frequency / codec_context->sample_rate;
2150                                 if ( resample_factor > self->resample_factor )
2151                                         self->resample_factor = resample_factor;
2152
2153                                 // Create the resampler
2154 #if (LIBAVCODEC_VERSION_INT >= ((52<<16)+(15<<8)+0))
2155                                 self->audio_resample[ index ] = av_audio_resample_init(
2156                                         self->audio_index == INT_MAX ? codec_context->channels : *channels,
2157                                         codec_context->channels, *frequency, codec_context->sample_rate,
2158                                         SAMPLE_FMT_S16, codec_context->sample_fmt, 16, 10, 0, 0.8 );
2159 #else
2160                                 self->audio_resample[ index ] = audio_resample_init(
2161                                         self->audio_index == INT_MAX ? codec_context->channels : *channels,
2162                                         codec_context->channels, *frequency, codec_context->sample_rate );
2163 #endif
2164                         }
2165                         else
2166                         {
2167                                 codec_context->request_channels = self->audio_index == INT_MAX ? codec_context->channels : *channels;
2168                                 sizeof_sample = sample_bytes( codec_context );
2169                         }
2170
2171                         // Check for audio buffer and create if necessary
2172                         self->audio_buffer_size[ index ] = AVCODEC_MAX_AUDIO_FRAME_SIZE * sizeof_sample;
2173                         self->audio_buffer[ index ] = mlt_pool_alloc( self->audio_buffer_size[ index ] );
2174
2175                         // Check for decoder buffer and create if necessary
2176                         self->decode_buffer[ index ] = av_malloc( self->audio_buffer_size[ index ] );
2177                 }
2178         }
2179
2180         // Get the audio if required
2181         if ( !paused )
2182         {
2183                 int ret = 0;
2184                 int got_audio = 0;
2185                 AVPacket pkt;
2186
2187                 av_init_packet( &pkt );
2188
2189                 // If not resampling, give consumer more than requested.
2190                 // It requested number samples based on requested frame rate.
2191                 // Do not clean this up with a samples *= ...!
2192                 if ( self->audio_index != INT_MAX && ! self->audio_resample[ self->audio_index ] )
2193                         *samples = *samples * self->audio_codec[ self->audio_index ]->sample_rate / *frequency;
2194
2195                 while ( ret >= 0 && !got_audio )
2196                 {
2197                         // Check if the buffer already contains the samples required
2198                         if ( self->audio_index != INT_MAX &&
2199                                  self->audio_used[ self->audio_index ] >= *samples &&
2200                                  ignore[ self->audio_index ] == 0 )
2201                         {
2202                                 got_audio = 1;
2203                                 break;
2204                         }
2205                         else if ( self->audio_index == INT_MAX )
2206                         {
2207                                 // Check if there is enough audio for all streams
2208                                 got_audio = 1;
2209                                 for ( index = 0; got_audio && index < context->nb_streams; index++ )
2210                                         if ( ( self->audio_codec[ index ] && self->audio_used[ index ] < *samples ) || ignore[ index ] )
2211                                                 got_audio = 0;
2212                                 if ( got_audio )
2213                                         break;
2214                         }
2215
2216                         // Read a packet
2217                         pthread_mutex_lock( &self->packets_mutex );
2218                         if ( mlt_deque_count( self->apackets ) )
2219                         {
2220                                 AVPacket *tmp = (AVPacket*) mlt_deque_pop_front( self->apackets );
2221                                 pkt = *tmp;
2222                                 free( tmp );
2223                         }
2224                         else
2225                         {
2226                                 ret = av_read_frame( context, &pkt );
2227                                 if ( ret >= 0 && !self->seekable && pkt.stream_index == self->video_index )
2228                                 {
2229                                         if ( !av_dup_packet( &pkt ) )
2230                                         {
2231                                                 AVPacket *tmp = malloc( sizeof(AVPacket) );
2232                                                 *tmp = pkt;
2233                                                 mlt_deque_push_back( self->vpackets, tmp );
2234                                         }
2235                                 }
2236                         }
2237                         pthread_mutex_unlock( &self->packets_mutex );
2238
2239                         // We only deal with audio from the selected audio index
2240                         index = pkt.stream_index;
2241                         if ( ret >= 0 && pkt.data && pkt.size > 0 && ( index == self->audio_index ||
2242                                  ( self->audio_index == INT_MAX && context->streams[ index ]->codec->codec_type == CODEC_TYPE_AUDIO ) ) )
2243                         {
2244                                 int channels2 = ( self->audio_index == INT_MAX || !self->audio_resample[index] ) ?
2245                                         self->audio_codec[index]->channels : *channels;
2246                                 ret = decode_audio( self, &ignore[index], pkt, channels2, *samples, real_timecode, fps );
2247                         }
2248
2249                         if ( self->seekable || index != self->video_index )
2250                                 av_free_packet( &pkt );
2251
2252                 }
2253
2254                 // Set some additional return values
2255                 *format = mlt_audio_s16;
2256                 if ( self->audio_index != INT_MAX && !self->audio_resample[ self->audio_index ] )
2257                 {
2258                         index = self->audio_index;
2259                         *channels = self->audio_codec[ index ]->channels;
2260                         *frequency = self->audio_codec[ index ]->sample_rate;
2261                         *format = self->audio_codec[ index ]->sample_fmt == SAMPLE_FMT_S32 ? mlt_audio_s32le
2262                                 : self->audio_codec[ index ]->sample_fmt == SAMPLE_FMT_FLT ? mlt_audio_f32le
2263                                 : mlt_audio_s16;
2264                         sizeof_sample = sample_bytes( self->audio_codec[ index ] );
2265                 }
2266                 else if ( self->audio_index == INT_MAX )
2267                 {
2268                         // This only works if all audio tracks have the same sample format.
2269                         for ( index = 0; index < index_max; index++ )
2270                                 if ( self->audio_codec[ index ] && !self->audio_resample[ index ] )
2271                                 {
2272                                         *format = self->audio_codec[ index ]->sample_fmt == SAMPLE_FMT_S32 ? mlt_audio_s32le
2273                                                 : self->audio_codec[ index ]->sample_fmt == SAMPLE_FMT_FLT ? mlt_audio_f32le
2274                                                 : mlt_audio_s16;
2275                                         sizeof_sample = sample_bytes( self->audio_codec[ index ] );
2276                                         break;
2277                                 }
2278                 }
2279
2280                 // Allocate and set the frame's audio buffer
2281                 int size = mlt_audio_format_size( *format, *samples, *channels );
2282                 *buffer = mlt_pool_alloc( size );
2283                 mlt_frame_set_audio( frame, *buffer, *format, size, mlt_pool_release );
2284
2285                 // Interleave tracks if audio_index=all
2286                 if ( self->audio_index == INT_MAX )
2287                 {
2288                         uint8_t *dest = *buffer;
2289                         int i;
2290                         for ( i = 0; i < *samples; i++ )
2291                         {
2292                                 for ( index = 0; index < index_max; index++ )
2293                                 if ( self->audio_codec[ index ] )
2294                                 {
2295                                         int current_channels = self->audio_codec[ index ]->channels;
2296                                         uint8_t *src = self->audio_buffer[ index ] + i * current_channels * sizeof_sample;
2297                                         memcpy( dest, src, current_channels * sizeof_sample );
2298                                         dest += current_channels * sizeof_sample;
2299                                 }
2300                         }
2301                         for ( index = 0; index < index_max; index++ )
2302                         if ( self->audio_codec[ index ] && self->audio_used[ index ] >= *samples )
2303                         {
2304                                 int current_channels = self->audio_codec[ index ]->channels;
2305                                 uint8_t *src = self->audio_buffer[ index ] + *samples * current_channels * sizeof_sample;
2306                                 self->audio_used[index] -= *samples;
2307                                 memmove( self->audio_buffer[ index ], src, self->audio_used[ index ] * current_channels * sizeof_sample );
2308                         }
2309                 }
2310                 // Copy a single track to the output buffer
2311                 else
2312                 {
2313                         index = self->audio_index;
2314
2315                         // Now handle the audio if we have enough
2316                         if ( self->audio_used[ index ] > 0 )
2317                         {
2318                                 uint8_t *src = self->audio_buffer[ index ];
2319                                 // copy samples from audio_buffer
2320                                 size = self->audio_used[ index ] < *samples ? self->audio_used[ index ] : *samples;
2321                                 memcpy( *buffer, src, size * *channels * sizeof_sample );
2322                                 // supply the remaining requested samples as silence
2323                                 if ( *samples > self->audio_used[ index ] )
2324                                         memset( *buffer + size * *channels * sizeof_sample, 0, ( *samples - self->audio_used[ index ] ) * *channels * sizeof_sample );
2325                                 // reposition the samples within audio_buffer
2326                                 self->audio_used[ index ] -= size;
2327                                 memmove( src, src + size * *channels * sizeof_sample, self->audio_used[ index ] * *channels * sizeof_sample );
2328                         }
2329                         else
2330                         {
2331                                 // Otherwise fill with silence
2332                                 memset( *buffer, 0, *samples * *channels * sizeof_sample );
2333                         }
2334                 }
2335         }
2336         else
2337         {
2338                 // Get silence and don't touch the context
2339                 mlt_frame_get_audio( frame, buffer, format, frequency, channels, samples );
2340         }
2341
2342         // Regardless of speed (other than paused), we expect to get the next frame
2343         if ( !paused )
2344                 self->audio_expected = position + 1;
2345
2346         pthread_mutex_unlock( &self->audio_mutex );
2347
2348         return 0;
2349 }
2350
2351 /** Initialize the audio codec context.
2352 */
2353
2354 static int audio_codec_init( producer_avformat self, int index, mlt_properties properties )
2355 {
2356         // Initialise the codec if necessary
2357         if ( !self->audio_codec[ index ] )
2358         {
2359                 // Get codec context
2360                 AVCodecContext *codec_context = self->audio_format->streams[index]->codec;
2361
2362                 // Find the codec
2363                 AVCodec *codec = avcodec_find_decoder( codec_context->codec_id );
2364
2365                 // If we don't have a codec and we can't initialise it, we can't do much more...
2366                 avformat_lock( );
2367                 if ( codec && avcodec_open( codec_context, codec ) >= 0 )
2368                 {
2369                         // Now store the codec with its destructor
2370                         if ( self->audio_codec[ index ] )
2371                                 avcodec_close( self->audio_codec[ index ] );
2372                         self->audio_codec[ index ] = codec_context;
2373                 }
2374                 else
2375                 {
2376                         // Remember that we can't use self later
2377                         self->audio_index = -1;
2378                 }
2379                 avformat_unlock( );
2380
2381                 // Process properties as AVOptions
2382                 apply_properties( codec_context, properties, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_DECODING_PARAM );
2383 #if LIBAVCODEC_VERSION_MAJOR > 52
2384                 if ( codec && codec->priv_class && codec_context->priv_data )
2385                         apply_properties( codec_context->priv_data, properties, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_DECODING_PARAM );
2386 #endif
2387         }
2388         return self->audio_codec[ index ] && self->audio_index > -1;
2389 }
2390
2391 /** Set up audio handling.
2392 */
2393
2394 static void producer_set_up_audio( producer_avformat self, mlt_frame frame )
2395 {
2396         // Get the producer
2397         mlt_producer producer = self->parent;
2398
2399         // Get the properties
2400         mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
2401
2402         // Fetch the audio format context
2403         AVFormatContext *context = self->audio_format;
2404
2405         mlt_properties frame_properties = MLT_FRAME_PROPERTIES( frame );
2406
2407         // Get the audio_index
2408         int index = mlt_properties_get_int( properties, "audio_index" );
2409
2410         // Handle all audio tracks
2411         if ( self->audio_index > -1 &&
2412              mlt_properties_get( properties, "audio_index" ) &&
2413              !strcmp( mlt_properties_get( properties, "audio_index" ), "all" ) )
2414                 index = INT_MAX;
2415
2416         // Reopen the file if necessary
2417         if ( !context && self->audio_index > -1 && index > -1 )
2418         {
2419                 producer_open( self, mlt_service_profile( MLT_PRODUCER_SERVICE(producer) ),
2420                         mlt_properties_get( properties, "resource" ) );
2421                 context = self->audio_format;
2422         }
2423
2424         // Exception handling for audio_index
2425         if ( context && index >= (int) context->nb_streams && index < INT_MAX )
2426         {
2427                 for ( index = context->nb_streams - 1;
2428                           index >= 0 && context->streams[ index ]->codec->codec_type != CODEC_TYPE_AUDIO;
2429                           index-- );
2430                 mlt_properties_set_int( properties, "audio_index", index );
2431         }
2432         if ( context && index > -1 && index < INT_MAX &&
2433                  context->streams[ index ]->codec->codec_type != CODEC_TYPE_AUDIO )
2434         {
2435                 index = self->audio_index;
2436                 mlt_properties_set_int( properties, "audio_index", index );
2437         }
2438
2439         // Update the audio properties if the index changed
2440         if ( context && index > -1 && index != self->audio_index )
2441         {
2442                 if ( self->audio_codec[ self->audio_index ] )
2443                 {
2444                         avformat_lock();
2445                         avcodec_close( self->audio_codec[ self->audio_index ] );
2446                         avformat_unlock();
2447                 }
2448                 self->audio_codec[ self->audio_index ] = NULL;
2449         }
2450         if ( self->audio_index != -1 )
2451                 self->audio_index = index;
2452         else
2453                 index = -1;
2454
2455         // Get the codec(s)
2456         if ( context && index == INT_MAX )
2457         {
2458                 mlt_properties_set_int( frame_properties, "audio_frequency", self->max_frequency );
2459                 mlt_properties_set_int( frame_properties, "audio_channels", self->total_channels );
2460                 for ( index = 0; index < context->nb_streams; index++ )
2461                 {
2462                         if ( context->streams[ index ]->codec->codec_type == CODEC_TYPE_AUDIO )
2463                                 audio_codec_init( self, index, properties );
2464                 }
2465         }
2466         else if ( context && index > -1 && audio_codec_init( self, index, properties ) )
2467         {
2468                 // Set the frame properties
2469                 if ( index < INT_MAX )
2470                 {
2471                         mlt_properties_set_int( frame_properties, "frequency", self->audio_codec[ index ]->sample_rate );
2472                         mlt_properties_set_int( frame_properties, "channels", self->audio_codec[ index ]->channels );
2473                 }
2474         }
2475         if ( context && index > -1 )
2476         {
2477                 // Add our audio operation
2478                 mlt_frame_push_audio( frame, self );
2479                 mlt_frame_push_audio( frame, producer_get_audio );
2480         }
2481 }
2482
2483 /** Our get frame implementation.
2484 */
2485
2486 static int producer_get_frame( mlt_producer producer, mlt_frame_ptr frame, int index )
2487 {
2488         // Access the private data
2489         mlt_service service = MLT_PRODUCER_SERVICE( producer );
2490         mlt_cache_item cache_item = mlt_service_cache_get( service, "producer_avformat" );
2491         producer_avformat self = mlt_cache_item_data( cache_item, NULL );
2492
2493         // If cache miss
2494         if ( !self )
2495         {
2496                 self = calloc( 1, sizeof( struct producer_avformat_s ) );
2497                 producer->child = self;
2498                 self->parent = producer;
2499                 mlt_service_cache_put( service, "producer_avformat", self, 0, (mlt_destructor) producer_avformat_close );
2500                 cache_item = mlt_service_cache_get( service, "producer_avformat" );
2501         }
2502
2503         // Create an empty frame
2504         *frame = mlt_frame_init( service);
2505
2506         if ( *frame )
2507         {
2508                 mlt_properties_set_data( MLT_FRAME_PROPERTIES(*frame), "avformat_cache", cache_item, 0, (mlt_destructor) mlt_cache_item_close, NULL );
2509         }
2510         else
2511         {
2512                 mlt_cache_item_close( cache_item );
2513                 return 1;
2514         }
2515
2516         // Update timecode on the frame we're creating
2517         mlt_frame_set_position( *frame, mlt_producer_position( producer ) );
2518
2519         // Set the position of this producer
2520         mlt_properties_set_position( MLT_FRAME_PROPERTIES( *frame ), "avformat_position", mlt_producer_frame( producer ) );
2521
2522         // Set up the video
2523         producer_set_up_video( self, *frame );
2524
2525         // Set up the audio
2526         producer_set_up_audio( self, *frame );
2527
2528         // Calculate the next timecode
2529         mlt_producer_prepare_next( producer );
2530
2531         return 0;
2532 }
2533
2534 static void producer_avformat_close( producer_avformat self )
2535 {
2536         mlt_log_debug( NULL, "producer_avformat_close\n" );
2537
2538         // Cleanup av contexts
2539         av_free( self->av_frame );
2540         avformat_lock();
2541         int i;
2542         for ( i = 0; i < MAX_AUDIO_STREAMS; i++ )
2543         {
2544                 if ( self->audio_resample[i] )
2545                         audio_resample_close( self->audio_resample[i] );
2546                 mlt_pool_release( self->audio_buffer[i] );
2547                 av_free( self->decode_buffer[i] );
2548                 if ( self->audio_codec[i] )
2549                         avcodec_close( self->audio_codec[i] );
2550         }
2551         if ( self->video_codec )
2552                 avcodec_close( self->video_codec );
2553         // Close the file
2554         if ( self->dummy_context )
2555                 av_close_input_file( self->dummy_context );
2556         if ( self->seekable && self->audio_format )
2557                 av_close_input_file( self->audio_format );
2558         if ( self->video_format )
2559                 av_close_input_file( self->video_format );
2560         avformat_unlock();
2561 #ifdef VDPAU
2562         vdpau_producer_close( self );
2563 #endif
2564         if ( self->image_cache )
2565                 mlt_cache_close( self->image_cache );
2566
2567         // Cleanup the mutexes
2568         pthread_mutex_destroy( &self->audio_mutex );
2569         pthread_mutex_destroy( &self->video_mutex );
2570         pthread_mutex_destroy( &self->packets_mutex );
2571
2572         // Cleanup the packet queues
2573         AVPacket *pkt;
2574         while ( ( pkt = mlt_deque_pop_back( self->apackets ) ) )
2575         {
2576                 av_free_packet( pkt );
2577                 free( pkt );
2578         }
2579         while ( ( pkt = mlt_deque_pop_back( self->vpackets ) ) )
2580         {
2581                 av_free_packet( pkt );
2582                 free( pkt );
2583         }
2584
2585         free( self );
2586 }
2587
2588 static void producer_close( mlt_producer parent )
2589 {
2590         // Remove this instance from the cache
2591         mlt_service_cache_purge( MLT_PRODUCER_SERVICE(parent) );
2592
2593         // Close the parent
2594         parent->close = NULL;
2595         mlt_producer_close( parent );
2596
2597         // Free the memory
2598         free( parent );
2599 }