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

   1 /*
   2  * producer_avformat.c -- avformat producer
   3  * Copyright (C) 2003-2012 Ushodaya Enterprises Limited
   4  * Author: Charles Yates <charles.yates@pandora.be>
   5  * Author: Dan Dennedy <dan@dennedy.org>
   6  * Much code borrowed from ffmpeg.c: Copyright (c) 2000-2003 Fabrice Bellard
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  */
  22
  23 // MLT Header files
  24 #include <framework/mlt_producer.h>
  25 #include <framework/mlt_frame.h>
  26 #include <framework/mlt_profile.h>
  27 #include <framework/mlt_log.h>
  28 #include <framework/mlt_deque.h>
  29 #include <framework/mlt_factory.h>
  30 #include <framework/mlt_cache.h>
  31
  32 // ffmpeg Header files
  33 #include <libavformat/avformat.h>
  34 #include <libswscale/swscale.h>
  35 #include <libavutil/samplefmt.h>
  36 #include <libavutil/pixdesc.h>
  37
  38 #ifdef VDPAU
  39 #  include <libavcodec/vdpau.h>
  40 #endif
  41 #if (LIBAVUTIL_VERSION_INT >= ((51<<16)+(8<<8)+0))
  42 #  include <libavutil/dict.h>
  43 #endif
  44
  45 // System header files
  46 #include <stdlib.h>
  47 #include <string.h>
  48 #include <pthread.h>
  49 #include <limits.h>
  50
  51 #if LIBAVCODEC_VERSION_MAJOR >= 53
  52 #include <libavutil/opt.h>
  53 #define CODEC_TYPE_VIDEO      AVMEDIA_TYPE_VIDEO
  54 #define CODEC_TYPE_AUDIO      AVMEDIA_TYPE_AUDIO
  55 #define PKT_FLAG_KEY AV_PKT_FLAG_KEY
  56 #else
  57 #include <libavcodec/opt.h>
  58 #endif
  59
  60 #if LIBAVCODEC_VERSION_MAJOR < 55
  61 #define AV_CODEC_ID_DVVIDEO CODEC_ID_DVVIDEO
  62 #define AV_CODEC_ID_H264    CODEC_ID_H264
  63 #endif
  64
  65 #define POSITION_INITIAL (-2)
  66 #define POSITION_INVALID (-1)
  67
  68 #define MAX_AUDIO_STREAMS (32)
  69 #define MAX_VDPAU_SURFACES (10)
  70 #define MAX_AUDIO_FRAME_SIZE (192000) // 1 second of 48khz 32bit audio
  71
  72 struct producer_avformat_s
  73 {
  74         mlt_producer parent;
  75         AVFormatContext *dummy_context;
  76         AVFormatContext *audio_format;
  77         AVFormatContext *video_format;
  78         AVCodecContext *audio_codec[ MAX_AUDIO_STREAMS ];
  79         AVCodecContext *video_codec;
  80         AVFrame *video_frame;
  81         AVFrame *audio_frame;
  82         AVPacket pkt;
  83         mlt_position audio_expected;
  84         mlt_position video_expected;
  85         int audio_index;
  86         int video_index;
  87         int64_t first_pts;
  88         int64_t last_position;
  89         int seekable;
  90         int64_t current_position;
  91         mlt_position nonseek_position;
  92         int top_field_first;
  93         uint8_t *audio_buffer[ MAX_AUDIO_STREAMS ];
  94         size_t audio_buffer_size[ MAX_AUDIO_STREAMS ];
  95         uint8_t *decode_buffer[ MAX_AUDIO_STREAMS ];
  96         int audio_used[ MAX_AUDIO_STREAMS ];
  97         int audio_streams;
  98         int audio_max_stream;
  99         int total_channels;
 100         int max_channel;
 101         int max_frequency;
 102         unsigned int invalid_pts_counter;
 103         unsigned int invalid_dts_counter;
 104         mlt_cache image_cache;
 105         int colorspace;
 106         int full_luma;
 107         pthread_mutex_t video_mutex;
 108         pthread_mutex_t audio_mutex;
 109         mlt_deque apackets;
 110         mlt_deque vpackets;
 111         pthread_mutex_t packets_mutex;
 112         pthread_mutex_t open_mutex;
 113         int is_mutex_init;
 114         AVRational video_time_base;
 115 #ifdef VDPAU
 116         struct
 117         {
 118                 // from FFmpeg
 119                 struct vdpau_render_state render_states[MAX_VDPAU_SURFACES];
 120
 121                 // internal
 122                 mlt_deque deque;
 123                 int b_age;
 124                 int ip_age[2];
 125                 int is_decoded;
 126                 uint8_t *buffer;
 127
 128                 VdpDevice device;
 129                 VdpDecoder decoder;
 130         } *vdpau;
 131 #endif
 132 };
 133 typedef struct producer_avformat_s *producer_avformat;
 134
 135 // Forward references.
 136 static int list_components( char* file );
 137 static int producer_open( producer_avformat self, mlt_profile profile, const char *URL, int take_lock );
 138 static int producer_get_frame( mlt_producer producer, mlt_frame_ptr frame, int index );
 139 static void producer_avformat_close( producer_avformat );
 140 static void producer_close( mlt_producer parent );
 141 static void producer_set_up_video( producer_avformat self, mlt_frame frame );
 142 static void producer_set_up_audio( producer_avformat self, mlt_frame frame );
 143 static void apply_properties( void *obj, mlt_properties properties, int flags );
 144 static int video_codec_init( producer_avformat self, int index, mlt_properties properties );
 145 static void get_audio_streams_info( producer_avformat self );
 146 static mlt_audio_format pick_audio_format( int sample_fmt );
 147
 148 #ifdef VDPAU
 149 #include "vdpau.c"
 150 #endif
 151
 152 /** Constructor for libavformat.
 153 */
 154
 155 mlt_producer producer_avformat_init( mlt_profile profile, const char *service, char *file )
 156 {
 157         if ( list_components( file ) )
 158                 return NULL;
 159
 160         mlt_producer producer = NULL;
 161
 162         // Check that we have a non-NULL argument
 163         if ( file )
 164         {
 165                 // Construct the producer
 166                 producer_avformat self = calloc( 1, sizeof( struct producer_avformat_s ) );
 167                 producer = calloc( 1, sizeof( struct mlt_producer_s ) );
 168
 169                 // Initialise it
 170                 if ( mlt_producer_init( producer, self ) == 0 )
 171                 {
 172                         self->parent = producer;
 173
 174                         // Get the properties
 175                         mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
 176
 177                         // Set the resource property (required for all producers)
 178                         mlt_properties_set( properties, "resource", file );
 179
 180                         // Register transport implementation with the producer
 181                         producer->close = (mlt_destructor) producer_close;
 182
 183                         // Register our get_frame implementation
 184                         producer->get_frame = producer_get_frame;
 185
 186                         if ( strcmp( service, "avformat-novalidate" ) )
 187                         {
 188                                 // Open the file
 189                                 if ( producer_open( self, profile, file, 1 ) != 0 )
 190                                 {
 191                                         // Clean up
 192                                         mlt_producer_close( producer );
 193                                         producer = NULL;
 194                                         producer_avformat_close( self );
 195                                 }
 196                                 else if ( self->seekable )
 197                                 {
 198                                         // Close the file to release resources for large playlists - reopen later as needed
 199 #if LIBAVFORMAT_VERSION_INT >= ((53<<16)+(17<<8)+0)
 200                                         if ( self->audio_format )
 201                                                 avformat_close_input( &self->audio_format );
 202                                         if ( self->video_format )
 203                                                 avformat_close_input( &self->video_format );
 204 #else
 205                                         if ( self->audio_format )
 206                                                 av_close_input_file( self->audio_format );
 207                                         if ( self->video_format )
 208                                                 av_close_input_file( self->video_format );
 209 #endif
 210                                         self->audio_format = NULL;
 211                                         self->video_format = NULL;
 212                                 }
 213                         }
 214                         if ( producer )
 215                         {
 216                                 // Default the user-selectable indices from the auto-detected indices
 217                                 mlt_properties_set_int( properties, "audio_index",  self->audio_index );
 218                                 mlt_properties_set_int( properties, "video_index",  self->video_index );
 219 #ifdef VDPAU
 220                                 mlt_service_cache_set_size( MLT_PRODUCER_SERVICE(producer), "producer_avformat", 5 );
 221 #endif
 222                                 mlt_service_cache_put( MLT_PRODUCER_SERVICE(producer), "producer_avformat", self, 0, (mlt_destructor) producer_avformat_close );
 223                         }
 224                 }
 225         }
 226         return producer;
 227 }
 228
 229 int list_components( char* file )
 230 {
 231         int skip = 0;
 232
 233         // Report information about available demuxers and codecs as YAML Tiny
 234         if ( file && strstr( file, "f-list" ) )
 235         {
 236                 fprintf( stderr, "---\nformats:\n" );
 237                 AVInputFormat *format = NULL;
 238                 while ( ( format = av_iformat_next( format ) ) )
 239                         fprintf( stderr, "  - %s\n", format->name );
 240                 fprintf( stderr, "...\n" );
 241                 skip = 1;
 242         }
 243         if ( file && strstr( file, "acodec-list" ) )
 244         {
 245                 fprintf( stderr, "---\naudio_codecs:\n" );
 246                 AVCodec *codec = NULL;
 247                 while ( ( codec = av_codec_next( codec ) ) )
 248                         if ( codec->decode && codec->type == CODEC_TYPE_AUDIO )
 249                                 fprintf( stderr, "  - %s\n", codec->name );
 250                 fprintf( stderr, "...\n" );
 251                 skip = 1;
 252         }
 253         if ( file && strstr( file, "vcodec-list" ) )
 254         {
 255                 fprintf( stderr, "---\nvideo_codecs:\n" );
 256                 AVCodec *codec = NULL;
 257                 while ( ( codec = av_codec_next( codec ) ) )
 258                         if ( codec->decode && codec->type == CODEC_TYPE_VIDEO )
 259                                 fprintf( stderr, "  - %s\n", codec->name );
 260                 fprintf( stderr, "...\n" );
 261                 skip = 1;
 262         }
 263
 264         return skip;
 265 }
 266
 267 static int first_video_index( producer_avformat self )
 268 {
 269         AVFormatContext *context = self->video_format? self->video_format : self->audio_format;
 270         int i = -1; // not found
 271
 272         if ( context ) {
 273                 for ( i = 0; i < context->nb_streams; i++ ) {
 274                         if ( context->streams[i]->codec &&
 275                              context->streams[i]->codec->codec_type == CODEC_TYPE_VIDEO )
 276                                 break;
 277                 }
 278                 if ( i == context->nb_streams )
 279                         i = -1;
 280         }
 281         return i;
 282 }
 283
 284 /** Find the default streams.
 285 */
 286
 287 static mlt_properties find_default_streams( producer_avformat self )
 288 {
 289         int i;
 290         char key[200];
 291 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(8<<8)+0)
 292         AVDictionaryEntry *tag = NULL;
 293 #else
 294         AVMetadataTag *tag = NULL;
 295 #endif
 296         AVFormatContext *context = self->video_format;
 297         mlt_properties meta_media = MLT_PRODUCER_PROPERTIES( self->parent );
 298
 299         // Default to the first audio and video streams found
 300         self->audio_index = -1;
 301         self->video_index = -1;
 302
 303         mlt_properties_set_int( meta_media, "meta.media.nb_streams", context->nb_streams );
 304
 305         // Allow for multiple audio and video streams in the file and select first of each (if available)
 306         for( i = 0; i < context->nb_streams; i++ )
 307         {
 308                 // Get the codec context
 309                 AVStream *stream = context->streams[ i ];
 310                 if ( ! stream ) continue;
 311                 AVCodecContext *codec_context = stream->codec;
 312                 if ( ! codec_context ) continue;
 313                 AVCodec *codec = avcodec_find_decoder( codec_context->codec_id );
 314                 if ( ! codec ) continue;
 315
 316                 snprintf( key, sizeof(key), "meta.media.%d.stream.type", i );
 317
 318                 // Determine the type and obtain the first index of each type
 319                 switch( codec_context->codec_type )
 320                 {
 321                         case CODEC_TYPE_VIDEO:
 322                                 // Use first video stream
 323                                 if ( self->video_index < 0 )
 324                                         self->video_index = i;
 325                                 mlt_properties_set( meta_media, key, "video" );
 326                                 snprintf( key, sizeof(key), "meta.media.%d.stream.frame_rate", i );
 327                                 double ffmpeg_fps = av_q2d( context->streams[ i ]->avg_frame_rate );
 328 #if LIBAVFORMAT_VERSION_MAJOR < 55
 329                                 if ( isnan( ffmpeg_fps ) || ffmpeg_fps == 0 )
 330                                         ffmpeg_fps = av_q2d( context->streams[ i ]->r_frame_rate );
 331 #endif
 332                                 mlt_properties_set_double( meta_media, key, ffmpeg_fps );
 333
 334                                 snprintf( key, sizeof(key), "meta.media.%d.stream.sample_aspect_ratio", i );
 335                                 mlt_properties_set_double( meta_media, key, av_q2d( context->streams[ i ]->sample_aspect_ratio ) );
 336                                 snprintf( key, sizeof(key), "meta.media.%d.codec.width", i );
 337                                 mlt_properties_set_int( meta_media, key, codec_context->width );
 338                                 snprintf( key, sizeof(key), "meta.media.%d.codec.height", i );
 339                                 mlt_properties_set_int( meta_media, key, codec_context->height );
 340                                 snprintf( key, sizeof(key), "meta.media.%d.codec.frame_rate", i );
 341                                 AVRational frame_rate = av_inv_q( codec_context->time_base );
 342                                 frame_rate.den *= codec_context->ticks_per_frame;
 343                                 mlt_properties_set_double( meta_media, key, av_q2d( frame_rate ) );
 344                                 snprintf( key, sizeof(key), "meta.media.%d.codec.pix_fmt", i );
 345 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(3<<8)+0)
 346                                 mlt_properties_set( meta_media, key, av_get_pix_fmt_name( codec_context->pix_fmt ) );
 347 #else
 348                                 mlt_properties_set( meta_media, key, avcodec_get_pix_fmt_name( codec_context->pix_fmt ) );
 349 #endif
 350                                 snprintf( key, sizeof(key), "meta.media.%d.codec.sample_aspect_ratio", i );
 351                                 mlt_properties_set_double( meta_media, key, av_q2d( codec_context->sample_aspect_ratio ) );
 352                                 snprintf( key, sizeof(key), "meta.media.%d.codec.colorspace", i );
 353                                 switch ( codec_context->colorspace )
 354                                 {
 355                                 case AVCOL_SPC_SMPTE240M:
 356                                         mlt_properties_set_int( meta_media, key, 240 );
 357                                         break;
 358                                 case AVCOL_SPC_BT470BG:
 359                                 case AVCOL_SPC_SMPTE170M:
 360                                         mlt_properties_set_int( meta_media, key, 601 );
 361                                         break;
 362                                 case AVCOL_SPC_BT709:
 363                                         mlt_properties_set_int( meta_media, key, 709 );
 364                                         break;
 365                                 default:
 366                                         // This is a heuristic Charles Poynton suggests in "Digital Video and HDTV"
 367                                         mlt_properties_set_int( meta_media, key, codec_context->width * codec_context->height > 750000 ? 709 : 601 );
 368                                         break;
 369                                 }
 370                                 break;
 371                         case CODEC_TYPE_AUDIO:
 372                                 if ( !codec_context->channels )
 373                                         break;
 374                                 // Use first audio stream
 375                                 if ( self->audio_index < 0 && pick_audio_format( codec_context->sample_fmt ) != mlt_audio_none )
 376                                         self->audio_index = i;
 377
 378                                 mlt_properties_set( meta_media, key, "audio" );
 379                                 snprintf( key, sizeof(key), "meta.media.%d.codec.sample_fmt", i );
 380                                 mlt_properties_set( meta_media, key, av_get_sample_fmt_name( codec_context->sample_fmt ) );
 381                                 snprintf( key, sizeof(key), "meta.media.%d.codec.sample_rate", i );
 382                                 mlt_properties_set_int( meta_media, key, codec_context->sample_rate );
 383                                 snprintf( key, sizeof(key), "meta.media.%d.codec.channels", i );
 384                                 mlt_properties_set_int( meta_media, key, codec_context->channels );
 385                                 break;
 386                         default:
 387                                 break;
 388                 }
 389 //              snprintf( key, sizeof(key), "meta.media.%d.stream.time_base", i );
 390 //              mlt_properties_set_double( meta_media, key, av_q2d( context->streams[ i ]->time_base ) );
 391                 snprintf( key, sizeof(key), "meta.media.%d.codec.name", i );
 392                 mlt_properties_set( meta_media, key, codec->name );
 393                 snprintf( key, sizeof(key), "meta.media.%d.codec.long_name", i );
 394                 mlt_properties_set( meta_media, key, codec->long_name );
 395                 snprintf( key, sizeof(key), "meta.media.%d.codec.bit_rate", i );
 396                 mlt_properties_set_int( meta_media, key, codec_context->bit_rate );
 397 //              snprintf( key, sizeof(key), "meta.media.%d.codec.time_base", i );
 398 //              mlt_properties_set_double( meta_media, key, av_q2d( codec_context->time_base ) );
 399 //              snprintf( key, sizeof(key), "meta.media.%d.codec.profile", i );
 400 //              mlt_properties_set_int( meta_media, key, codec_context->profile );
 401 //              snprintf( key, sizeof(key), "meta.media.%d.codec.level", i );
 402 //              mlt_properties_set_int( meta_media, key, codec_context->level );
 403
 404                 // Read Metadata
 405 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(8<<8)+0)
 406                 while ( ( tag = av_dict_get( stream->metadata, "", tag, AV_DICT_IGNORE_SUFFIX ) ) )
 407 #else
 408                 while ( ( tag = av_metadata_get( stream->metadata, "", tag, AV_METADATA_IGNORE_SUFFIX ) ) )
 409 #endif
 410                 {
 411                         if ( tag->value && strcmp( tag->value, "" ) && strcmp( tag->value, "und" ) )
 412                         {
 413                                 snprintf( key, sizeof(key), "meta.attr.%d.stream.%s.markup", i, tag->key );
 414                                 mlt_properties_set( meta_media, key, tag->value );
 415                         }
 416                 }
 417         }
 418 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(8<<8)+0)
 419         while ( ( tag = av_dict_get( context->metadata, "", tag, AV_DICT_IGNORE_SUFFIX ) ) )
 420 #else
 421         while ( ( tag = av_metadata_get( context->metadata, "", tag, AV_METADATA_IGNORE_SUFFIX ) ) )
 422 #endif
 423         {
 424                 if ( tag->value && strcmp( tag->value, "" ) && strcmp( tag->value, "und" ) )
 425                 {
 426                         snprintf( key, sizeof(key), "meta.attr.%s.markup", tag->key );
 427                         mlt_properties_set( meta_media, key, tag->value );
 428                 }
 429         }
 430
 431         return meta_media;
 432 }
 433
 434 static void get_aspect_ratio( mlt_properties properties, AVStream *stream, AVCodecContext *codec_context )
 435 {
 436         AVRational sar = stream->sample_aspect_ratio;
 437         if ( sar.num <= 0 || sar.den <= 0 )
 438                 sar = codec_context->sample_aspect_ratio;
 439         if ( sar.num <= 0 || sar.den <= 0 )
 440                 sar.num = sar.den = 1;
 441         mlt_properties_set_int( properties, "meta.media.sample_aspect_num", sar.num );
 442         mlt_properties_set_int( properties, "meta.media.sample_aspect_den", sar.den );
 443         mlt_properties_set_double( properties, "aspect_ratio", av_q2d( sar ) );
 444 }
 445
 446 #if LIBAVFORMAT_VERSION_INT > ((53<<16)+(6<<8)+0)
 447 static char* parse_url( mlt_profile profile, const char* URL, AVInputFormat **format, AVDictionary **params )
 448 #else
 449 static char* parse_url( mlt_profile profile, const char* URL, AVInputFormat **format, AVFormatParameters *params )
 450 #endif
 451 {
 452         if ( !URL ) return NULL;
 453
 454         char *result = NULL;
 455         char *protocol = strdup( URL );
 456         char *url = strchr( protocol, ':' );
 457
 458         // Only if there is not a protocol specification that avformat can handle
 459 #if LIBAVFORMAT_VERSION_MAJOR >= 53
 460         if ( url && avio_check( URL, 0 ) < 0 )
 461 #else
 462         if ( url && !url_exist( URL ) )
 463 #endif
 464         {
 465                 // Truncate protocol string
 466                 url[0] = 0;
 467                 mlt_log_debug( NULL, "%s: protocol=%s resource=%s\n", __FUNCTION__, protocol, url + 1 );
 468
 469                 // Lookup the format
 470                 *format = av_find_input_format( protocol );
 471
 472                 // Eat the format designator
 473                 result = ++url;
 474
 475                 if ( *format )
 476                 {
 477 #if LIBAVFORMAT_VERSION_INT > ((53<<16)+(6<<8)+0)
 478                         // support for legacy width and height parameters
 479                         char *width = NULL;
 480                         char *height = NULL;
 481 #else
 482                         // These are required by video4linux2 (defaults)
 483                         params->width = profile->width;
 484                         params->height = profile->height;
 485                         if ( !strstr( URL, "&frame_rate" ) )
 486                                 params->time_base = (AVRational){ profile->frame_rate_den, profile->frame_rate_num };
 487                         params->channels = 2;
 488                         params->sample_rate = 48000;
 489 #endif
 490
 491                         // Parse out params
 492                         url = strchr( url, '?' );
 493                         while ( url )
 494                         {
 495                                 url[0] = 0;
 496                                 char *name = strdup( ++url );
 497                                 char *value = strchr( name, '=' );
 498                                 if ( !value )
 499                                         // Also accept : as delimiter for backwards compatibility.
 500                                         value = strchr( name, ':' );
 501                                 if ( value )
 502                                 {
 503                                         value[0] = 0;
 504                                         value++;
 505                                         char *t = strchr( value, '&' );
 506                                         if ( t )
 507                                                 t[0] = 0;
 508 #if LIBAVFORMAT_VERSION_INT > ((53<<16)+(6<<8)+0)
 509                                         // translate old parameters to new av_dict names
 510                                         if ( !strcmp( name, "frame_rate" ) )
 511                                                 av_dict_set( params, "framerate", value, 0 );
 512                                         else if ( !strcmp( name, "pix_fmt" ) )
 513                                                 av_dict_set( params, "pixel_format", value, 0 );
 514                                         else if ( !strcmp( name, "width" ) )
 515                                                 width = strdup( value );
 516                                         else if ( !strcmp( name, "height" ) )
 517                                                 height = strdup( value );
 518                                         else
 519                                                 // generic demux/device option support
 520                                                 av_dict_set( params, name, value, 0 );
 521 #else
 522                                         if ( !strcmp( name, "frame_rate" ) )
 523                                                 params->time_base.den = atoi( value );
 524                                         else if ( !strcmp( name, "frame_rate_base" ) )
 525                                                 params->time_base.num = atoi( value );
 526                                         else if ( !strcmp( name, "sample_rate" ) )
 527                                                 params->sample_rate = atoi( value );
 528                                         else if ( !strcmp( name, "channel" ) )
 529                                                 params->channel = atoi( value );
 530                                         else if ( !strcmp( name, "channels" ) )
 531                                                 params->channels = atoi( value );
 532                                         else if ( !strcmp( name, "pix_fmt" ) )
 533                                                 params->pix_fmt = av_get_pix_fmt( value );
 534                                         else if ( !strcmp( name, "width" ) )
 535                                                 params->width = atoi( value );
 536                                         else if ( !strcmp( name, "height" ) )
 537                                                 params->height = atoi( value );
 538                                         else if ( !strcmp( name, "standard" ) )
 539                                                 params->standard = strdup( value );
 540 #endif
 541                                 }
 542                                 free( name );
 543                                 url = strchr( url, '&' );
 544                         }
 545 #if LIBAVFORMAT_VERSION_INT > ((53<<16)+(6<<8)+0)
 546                         // continued support for legacy width and height parameters
 547                         if ( width && height )
 548                         {
 549                                 char *s = malloc( strlen( width ) + strlen( height ) + 2 );
 550                                 strcpy( s, width );
 551                                 strcat( s, "x");
 552                                 strcat( s, height );
 553                                 av_dict_set( params, "video_size", s, 0 );
 554                                 free( s );
 555                         }
 556                         if ( width ) free( width );
 557                         if ( height ) free ( height );
 558 #endif
 559                 }
 560                 result = strdup( result );
 561         }
 562         else
 563         {
 564                 result = strdup( URL );
 565         }
 566         free( protocol );
 567         return result;
 568 }
 569
 570 static int get_basic_info( producer_avformat self, mlt_profile profile, const char *filename )
 571 {
 572         int error = 0;
 573
 574         // Get the properties
 575         mlt_properties properties = MLT_PRODUCER_PROPERTIES( self->parent );
 576
 577         AVFormatContext *format = self->video_format;
 578
 579         // We will treat everything with the producer fps.
 580         // TODO: make this more flexible.
 581         double fps = mlt_profile_fps( profile );
 582
 583         // Get the duration
 584         if ( !mlt_properties_get_int( properties, "_length_computed" ) )
 585         {
 586                 // The _length_computed flag prevents overwriting explicity set length/out/eof properties
 587                 // when producer_open is called after initial call when restoring or reseting the producer.
 588                 if ( format->duration != AV_NOPTS_VALUE )
 589                 {
 590                         // This isn't going to be accurate for all formats
 591                         mlt_position frames = ( mlt_position )( ( ( double )format->duration / ( double )AV_TIME_BASE ) * fps );
 592                         mlt_properties_set_position( properties, "out", frames - 1 );
 593                         mlt_properties_set_position( properties, "length", frames );
 594                         mlt_properties_set_int( properties, "_length_computed", 1 );
 595                 }
 596                 else
 597                 {
 598                         // Set live sources to run forever
 599                         mlt_properties_set_position( properties, "length", INT_MAX );
 600                         mlt_properties_set_position( properties, "out", INT_MAX - 1 );
 601                         mlt_properties_set( properties, "eof", "loop" );
 602                         mlt_properties_set_int( properties, "_length_computed", 1 );
 603                 }
 604         }
 605
 606         // Check if we're seekable
 607         // avdevices are typically AVFMT_NOFILE and not seekable
 608         self->seekable = !format->iformat || !( format->iformat->flags & AVFMT_NOFILE );
 609         if ( format->pb )
 610         {
 611                 // protocols can indicate if they support seeking
 612 #if LIBAVFORMAT_VERSION_MAJOR >= 53
 613                 self->seekable = format->pb->seekable;
 614 #else
 615                 URLContext *uc = url_fileno( format->pb );
 616                 if ( uc )
 617                         self->seekable = !uc->is_streamed;
 618 #endif
 619         }
 620         if ( self->seekable )
 621         {
 622                 // Do a more rigourous test of seekable on a disposable context
 623                 self->seekable = av_seek_frame( format, -1, format->start_time, AVSEEK_FLAG_BACKWARD ) >= 0;
 624                 mlt_properties_set_int( properties, "seekable", self->seekable );
 625                 self->dummy_context = format;
 626 #if LIBAVFORMAT_VERSION_INT > ((53<<16)+(6<<8)+0)
 627                 self->video_format = NULL;
 628                 avformat_open_input( &self->video_format, filename, NULL, NULL );
 629                 avformat_find_stream_info( self->video_format, NULL );
 630 #else
 631                 av_open_input_file( &self->video_format, filename, NULL, 0, NULL );
 632                 av_find_stream_info( self->video_format );
 633 #endif
 634                 format = self->video_format;
 635         }
 636
 637         // Fetch the width, height and aspect ratio
 638         if ( self->video_index != -1 )
 639         {
 640                 AVCodecContext *codec_context = format->streams[ self->video_index ]->codec;
 641                 mlt_properties_set_int( properties, "width", codec_context->width );
 642                 mlt_properties_set_int( properties, "height", codec_context->height );
 643                 get_aspect_ratio( properties, format->streams[ self->video_index ], codec_context );
 644
 645                 // Verify that we can convert this to YUV 4:2:2
 646                 // TODO: we can now also return RGB and RGBA and quite possibly more in the future.
 647                 struct SwsContext *context = sws_getContext( codec_context->width, codec_context->height, codec_context->pix_fmt,
 648                         codec_context->width, codec_context->height, PIX_FMT_YUYV422, SWS_BILINEAR, NULL, NULL, NULL);
 649                 if ( context )
 650                         sws_freeContext( context );
 651                 else
 652                         error = 1;
 653         }
 654         return error;
 655 }
 656
 657 /** Open the file.
 658 */
 659
 660 static int producer_open( producer_avformat self, mlt_profile profile, const char *URL, int take_lock )
 661 {
 662         // Return an error code (0 == no error)
 663         int error = 0;
 664         mlt_properties properties = MLT_PRODUCER_PROPERTIES( self->parent );
 665
 666         // Lock the service
 667         if ( take_lock )
 668         {
 669                 if ( !self->is_mutex_init )
 670                 {
 671                         pthread_mutex_init( &self->audio_mutex, NULL );
 672                         pthread_mutex_init( &self->video_mutex, NULL );
 673                         pthread_mutex_init( &self->packets_mutex, NULL );
 674                         pthread_mutex_init( &self->open_mutex, NULL );
 675                         self->is_mutex_init = 1;
 676                 }
 677                 pthread_mutex_lock( &self->audio_mutex );
 678                 pthread_mutex_lock( &self->video_mutex );
 679         }
 680         mlt_events_block( properties, self->parent );
 681
 682         // Parse URL
 683         AVInputFormat *format = NULL;
 684 #if LIBAVFORMAT_VERSION_INT > ((53<<16)+(6<<8)+0)
 685         AVDictionary *params = NULL;
 686 #else
 687         AVFormatParameters params;
 688         memset( &params, 0, sizeof(params) );
 689 #endif
 690         char *filename = parse_url( profile, URL, &format, &params );
 691
 692         // Now attempt to open the file or device with filename
 693 #if LIBAVFORMAT_VERSION_INT > ((53<<16)+(6<<8)+0)
 694         error = avformat_open_input( &self->video_format, filename, format, &params ) < 0;
 695         if ( error )
 696                 // If the URL is a network stream URL, then we probably need to open with full URL
 697                 error = avformat_open_input( &self->video_format, URL, format, &params ) < 0;
 698 #else
 699         error = av_open_input_file( &self->video_format, filename, format, 0, &params ) < 0;
 700         if ( error )
 701                 // If the URL is a network stream URL, then we probably need to open with full URL
 702                 error = av_open_input_file( &self->video_format, URL, format, 0, &params ) < 0;
 703 #endif
 704
 705         // Set MLT properties onto video AVFormatContext
 706         if ( !error && self->video_format )
 707         {
 708                 apply_properties( self->video_format, properties, AV_OPT_FLAG_DECODING_PARAM );
 709                 if ( self->video_format->iformat && self->video_format->iformat->priv_class && self->video_format->priv_data )
 710                         apply_properties( self->video_format->priv_data, properties, AV_OPT_FLAG_DECODING_PARAM );
 711         }
 712
 713 #if LIBAVFORMAT_VERSION_INT > ((53<<16)+(6<<8)+0)
 714         av_dict_free( &params );
 715 #else
 716         // Cleanup AVFormatParameters
 717         if ( params.standard )
 718                 free( (void*) params.standard );
 719 #endif
 720
 721         // If successful, then try to get additional info
 722         if ( !error && self->video_format )
 723         {
 724                 // Get the stream info
 725 #if LIBAVFORMAT_VERSION_INT > ((53<<16)+(6<<8)+0)
 726                 error = avformat_find_stream_info( self->video_format, NULL ) < 0;
 727 #else
 728                 error = av_find_stream_info( self->video_format ) < 0;
 729 #endif
 730
 731                 // Continue if no error
 732                 if ( !error && self->video_format )
 733                 {
 734                         // Find default audio and video streams
 735                         find_default_streams( self );
 736                         error = get_basic_info( self, profile, filename );
 737
 738                         // Initialize position info
 739                         self->first_pts = AV_NOPTS_VALUE;
 740                         self->last_position = POSITION_INITIAL;
 741
 742                         if ( !self->audio_format )
 743                         {
 744                                 // We're going to cheat here - for seekable A/V files, we will have separate contexts
 745                                 // to support independent seeking of audio from video.
 746                                 // TODO: Is this really necessary?
 747                                 if ( self->audio_index != -1 && self->video_index != -1 )
 748                                 {
 749                                         if ( self->seekable )
 750                                         {
 751                                                 // And open again for our audio context
 752 #if LIBAVFORMAT_VERSION_INT > ((53<<16)+(6<<8)+0)
 753                                                 avformat_open_input( &self->audio_format, filename, NULL, NULL );
 754                                                 apply_properties( self->audio_format, properties, AV_OPT_FLAG_DECODING_PARAM );
 755                                                 if ( self->audio_format->iformat && self->audio_format->iformat->priv_class && self->audio_format->priv_data )
 756                                                         apply_properties( self->audio_format->priv_data, properties, AV_OPT_FLAG_DECODING_PARAM );
 757                                                 avformat_find_stream_info( self->audio_format, NULL );
 758 #else
 759                                                 av_open_input_file( &self->audio_format, filename, NULL, 0, NULL );
 760                                                 apply_properties( self->audio_format, properties, AV_OPT_FLAG_DECODING_PARAM );
 761 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(110<<8)+0)
 762                         if ( self->audio_format->iformat && self->audio_format->iformat->priv_class && self->audio_format->priv_data )
 763                             apply_properties( self->audio_format->priv_data, properties, AV_OPT_FLAG_DECODING_PARAM );
 764 #endif
 765                                                 av_find_stream_info( self->audio_format );
 766 #endif
 767                                         }
 768                                         else
 769                                         {
 770                                                 self->audio_format = self->video_format;
 771                                         }
 772                                 }
 773                                 else if ( self->audio_index != -1 )
 774                                 {
 775                                         // We only have an audio context
 776                                         self->audio_format = self->video_format;
 777                                         self->video_format = NULL;
 778                                 }
 779                                 else if ( self->video_index == -1 )
 780                                 {
 781                                         // Something has gone wrong
 782                                         error = -1;
 783                                 }
 784                                 if ( self->audio_format && !self->audio_streams )
 785                                         get_audio_streams_info( self );
 786                         }
 787                 }
 788         }
 789         if ( filename )
 790                 free( filename );
 791         if ( !error )
 792         {
 793                 self->apackets = mlt_deque_init();
 794                 self->vpackets = mlt_deque_init();
 795         }
 796
 797         if ( self->dummy_context )
 798         {
 799                 pthread_mutex_lock( &self->open_mutex );
 800 #if LIBAVFORMAT_VERSION_INT >= ((53<<16)+(17<<8)+0)
 801                 avformat_close_input( &self->dummy_context );
 802 #else
 803                 av_close_input_file( self->dummy_context );
 804 #endif
 805                 self->dummy_context = NULL;
 806                 pthread_mutex_unlock( &self->open_mutex );
 807         }
 808
 809         // Unlock the service
 810         if ( take_lock )
 811         {
 812                 pthread_mutex_unlock( &self->audio_mutex );
 813                 pthread_mutex_unlock( &self->video_mutex );
 814         }
 815         mlt_events_unblock( properties, self->parent );
 816
 817         return error;
 818 }
 819
 820 static void reopen_video( producer_avformat self, mlt_producer producer )
 821 {
 822         mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
 823         mlt_service_lock( MLT_PRODUCER_SERVICE( producer ) );
 824         pthread_mutex_lock( &self->audio_mutex );
 825         pthread_mutex_lock( &self->open_mutex );
 826
 827         if ( self->video_codec )
 828                 avcodec_close( self->video_codec );
 829         self->video_codec = NULL;
 830 #if LIBAVFORMAT_VERSION_INT >= ((53<<16)+(17<<8)+0)
 831         if ( self->dummy_context )
 832                 avformat_close_input( &self->dummy_context );
 833         if ( self->video_format )
 834                 avformat_close_input( &self->video_format );
 835 #else
 836         if ( self->dummy_context )
 837                 av_close_input_file( self->dummy_context );
 838         if ( self->video_format )
 839                 av_close_input_file( self->video_format );
 840 #endif
 841         self->dummy_context = NULL;
 842         self->video_format = NULL;
 843         pthread_mutex_unlock( &self->open_mutex );
 844
 845         int audio_index = self->audio_index;
 846         int video_index = self->video_index;
 847
 848         producer_open( self, mlt_service_profile( MLT_PRODUCER_SERVICE(producer) ),
 849                 mlt_properties_get( properties, "resource" ), 0 );
 850
 851         self->audio_index = audio_index;
 852         if ( self->video_format && video_index > -1 )
 853         {
 854                 self->video_index = video_index;
 855                 video_codec_init( self, video_index, properties );
 856         }
 857
 858         pthread_mutex_unlock( &self->audio_mutex );
 859         mlt_service_unlock( MLT_PRODUCER_SERVICE( producer ) );
 860 }
 861
 862 static int64_t best_pts( producer_avformat self, int64_t pts, int64_t dts )
 863 {
 864         self->invalid_pts_counter += pts == AV_NOPTS_VALUE;
 865         self->invalid_dts_counter += dts == AV_NOPTS_VALUE;
 866         if ( ( self->invalid_pts_counter <= self->invalid_dts_counter
 867                    || dts == AV_NOPTS_VALUE ) && pts != AV_NOPTS_VALUE )
 868                 return pts;
 869         else
 870                 return dts;
 871 }
 872
 873 static void find_first_pts( producer_avformat self, int video_index )
 874 {
 875         // find initial PTS
 876         AVFormatContext *context = self->video_format? self->video_format : self->audio_format;
 877         int ret = 0;
 878         int toscan = 500;
 879         AVPacket pkt;
 880
 881         while ( ret >= 0 && toscan-- > 0 )
 882         {
 883                 ret = av_read_frame( context, &pkt );
 884                 if ( ret >= 0 && pkt.stream_index == video_index && ( pkt.flags & PKT_FLAG_KEY ) )
 885                 {
 886                         mlt_log_debug( MLT_PRODUCER_SERVICE(self->parent),
 887                                 "first_pts %"PRId64" dts %"PRId64" pts_dts_delta %d\n",
 888                                 pkt.pts, pkt.dts, (int)(pkt.pts - pkt.dts) );
 889                         self->first_pts = best_pts( self, pkt.pts, pkt.dts );
 890                         if ( self->first_pts != AV_NOPTS_VALUE )
 891                                 toscan = 0;
 892                 }
 893                 av_free_packet( &pkt );
 894         }
 895         av_seek_frame( context, -1, 0, AVSEEK_FLAG_BACKWARD );
 896 }
 897
 898 static int seek_video( producer_avformat self, mlt_position position,
 899         int64_t req_position, int preseek )
 900 {
 901         mlt_producer producer = self->parent;
 902         int paused = 0;
 903
 904         if ( self->seekable && ( position != self->video_expected || self->last_position < 0 ) )
 905         {
 906                 mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
 907
 908                 // Fetch the video format context
 909                 AVFormatContext *context = self->video_format;
 910
 911                 // Get the video stream
 912                 AVStream *stream = context->streams[ self->video_index ];
 913
 914                 // Get codec context
 915                 AVCodecContext *codec_context = stream->codec;
 916
 917                 // We may want to use the source fps if available
 918                 double source_fps = mlt_properties_get_double( properties, "meta.media.frame_rate_num" ) /
 919                         mlt_properties_get_double( properties, "meta.media.frame_rate_den" );
 920
 921                 if ( self->last_position == POSITION_INITIAL )
 922                         find_first_pts( self, self->video_index );
 923
 924                 if ( self->video_frame && position + 1 == self->video_expected )
 925                 {
 926                         // We're paused - use last image
 927                         paused = 1;
 928                 }
 929                 else if ( self->seekable && ( position < self->video_expected || position - self->video_expected >= 12 || self->last_position < 0 ) )
 930                 {
 931                         // Calculate the timestamp for the requested frame
 932                         int64_t timestamp = req_position / ( av_q2d( self->video_time_base ) * source_fps );
 933                         if ( req_position <= 0 )
 934                                 timestamp = 0;
 935                         else if ( self->first_pts != AV_NOPTS_VALUE )
 936                                 timestamp += self->first_pts;
 937                         else if ( context->start_time != AV_NOPTS_VALUE )
 938                                 timestamp += context->start_time;
 939                         if ( preseek && av_q2d( self->video_time_base ) != 0 )
 940                                 timestamp -= 2 / av_q2d( self->video_time_base );
 941                         if ( timestamp < 0 )
 942                                 timestamp = 0;
 943                         mlt_log_debug( MLT_PRODUCER_SERVICE(producer), "seeking timestamp %"PRId64" position %d expected %d last_pos %"PRId64"\n",
 944                                 timestamp, position, self->video_expected, self->last_position );
 945
 946                         // Seek to the timestamp
 947                         // NOTE: reopen_video is disabled at this time because it is causing trouble with A/V sync.
 948                         if ( 1 || req_position > 0 || self->last_position <= 0 )
 949                         {
 950                                 codec_context->skip_loop_filter = AVDISCARD_NONREF;
 951                                 av_seek_frame( context, self->video_index, timestamp, AVSEEK_FLAG_BACKWARD );
 952
 953                                 // flush any pictures still in decode buffer
 954                                 avcodec_flush_buffers( codec_context );
 955                         }
 956                         else
 957                         {
 958                                 // Re-open video stream when rewinding to beginning from somewhere else.
 959                                 // This is rather ugly, and I prefer not to do it this way, but ffmpeg is
 960                                 // not reliably seeking to the first frame across formats.
 961                                 reopen_video( self, producer );
 962                         }
 963
 964                         // Remove the cached info relating to the previous position
 965                         self->current_position = POSITION_INVALID;
 966                         self->last_position = POSITION_INVALID;
 967                         av_freep( &self->video_frame );
 968                 }
 969         }
 970         return paused;
 971 }
 972
 973 /** Convert a frame position to a time code.
 974 */
 975
 976 static double producer_time_of_frame( mlt_producer producer, mlt_position position )
 977 {
 978         return ( double )position / mlt_producer_get_fps( producer );
 979 }
 980
 981 // Collect information about all audio streams
 982
 983 static void get_audio_streams_info( producer_avformat self )
 984 {
 985         // Fetch the audio format context
 986         AVFormatContext *context = self->audio_format;
 987         int i;
 988
 989         for ( i = 0;
 990                   i < context->nb_streams;
 991                   i++ )
 992         {
 993                 if ( context->streams[i]->codec->codec_type == CODEC_TYPE_AUDIO )
 994                 {
 995                         AVCodecContext *codec_context = context->streams[i]->codec;
 996                         AVCodec *codec = avcodec_find_decoder( codec_context->codec_id );
 997
 998                         // If we don't have a codec and we can't initialise it, we can't do much more...
 999                         pthread_mutex_lock( &self->open_mutex );
1000 #if LIBAVCODEC_VERSION_INT >= ((53<<16)+(8<<8)+0)
1001                         if ( codec && avcodec_open2( codec_context, codec, NULL ) >= 0 )
1002 #else
1003                         if ( codec && avcodec_open( codec_context, codec ) >= 0 )
1004 #endif
1005                         {
1006                                 self->audio_streams++;
1007                                 self->audio_max_stream = i;
1008                                 self->total_channels += codec_context->channels;
1009                                 if ( codec_context->channels > self->max_channel )
1010                                         self->max_channel = codec_context->channels;
1011                                 if ( codec_context->sample_rate > self->max_frequency )
1012                                         self->max_frequency = codec_context->sample_rate;
1013                                 avcodec_close( codec_context );
1014                         }
1015                         pthread_mutex_unlock( &self->open_mutex );
1016                 }
1017         }
1018         mlt_log_verbose( NULL, "[producer avformat] audio: total_streams %d max_stream %d total_channels %d max_channels %d\n",
1019                 self->audio_streams, self->audio_max_stream, self->total_channels, self->max_channel );
1020 }
1021
1022 static void set_luma_transfer( struct SwsContext *context, int colorspace, int use_full_range )
1023 {
1024         int *coefficients;
1025         const int *new_coefficients;
1026         int full_range;
1027         int brightness, contrast, saturation;
1028
1029         if ( sws_getColorspaceDetails( context, &coefficients, &full_range, &coefficients, &full_range,
1030                         &brightness, &contrast, &saturation ) != -1 )
1031         {
1032                 // Don't change these from defaults unless explicitly told to.
1033                 if ( use_full_range >= 0 )
1034                         full_range = use_full_range;
1035                 switch ( colorspace )
1036                 {
1037                 case 170:
1038                 case 470:
1039                 case 601:
1040                 case 624:
1041                         new_coefficients = sws_getCoefficients( SWS_CS_ITU601 );
1042                         break;
1043                 case 240:
1044                         new_coefficients = sws_getCoefficients( SWS_CS_SMPTE240M );
1045                         break;
1046                 case 709:
1047                         new_coefficients = sws_getCoefficients( SWS_CS_ITU709 );
1048                         break;
1049                 default:
1050                         new_coefficients = coefficients;
1051                         break;
1052                 }
1053                 sws_setColorspaceDetails( context, new_coefficients, full_range, new_coefficients, full_range,
1054                         brightness, contrast, saturation );
1055         }
1056 }
1057
1058 static mlt_image_format pick_pix_format( enum PixelFormat pix_fmt )
1059 {
1060         switch ( pix_fmt )
1061         {
1062         case PIX_FMT_ARGB:
1063         case PIX_FMT_RGBA:
1064         case PIX_FMT_ABGR:
1065         case PIX_FMT_BGRA:
1066                 return mlt_image_rgb24a;
1067         case PIX_FMT_YUV420P:
1068         case PIX_FMT_YUVJ420P:
1069         case PIX_FMT_YUVA420P:
1070                 return mlt_image_yuv420p;
1071         case PIX_FMT_RGB24:
1072         case PIX_FMT_BGR24:
1073         case PIX_FMT_GRAY8:
1074         case PIX_FMT_MONOWHITE:
1075         case PIX_FMT_MONOBLACK:
1076         case PIX_FMT_RGB8:
1077         case PIX_FMT_BGR8:
1078                 return mlt_image_rgb24;
1079         default:
1080                 return mlt_image_yuv422;
1081         }
1082 }
1083
1084 static mlt_audio_format pick_audio_format( int sample_fmt )
1085 {
1086         switch ( sample_fmt )
1087         {
1088         // interleaved
1089         case AV_SAMPLE_FMT_U8:
1090                 return mlt_audio_u8;
1091         case AV_SAMPLE_FMT_S16:
1092                 return mlt_audio_s16;
1093         case AV_SAMPLE_FMT_S32:
1094                 return mlt_audio_s32le;
1095         case AV_SAMPLE_FMT_FLT:
1096                 return mlt_audio_f32le;
1097         // planar - this producer converts planar to interleaved
1098 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(17<<8)+0)
1099         case AV_SAMPLE_FMT_U8P:
1100                 return mlt_audio_u8;
1101         case AV_SAMPLE_FMT_S16P:
1102                 return mlt_audio_s16;
1103         case AV_SAMPLE_FMT_S32P:
1104                 return mlt_audio_s32le;
1105         case AV_SAMPLE_FMT_FLTP:
1106                 return mlt_audio_f32le;
1107 #endif
1108         default:
1109                 return mlt_audio_none;
1110         }
1111 }
1112
1113 static void convert_image( producer_avformat self, AVFrame *frame, uint8_t *buffer, int pix_fmt,
1114         mlt_image_format *format, int width, int height, uint8_t **alpha )
1115 {
1116         int flags = SWS_BICUBIC | SWS_ACCURATE_RND;
1117
1118 #ifdef USE_MMX
1119         flags |= SWS_CPU_CAPS_MMX;
1120 #endif
1121 #ifdef USE_SSE
1122         flags |= SWS_CPU_CAPS_MMX2;
1123 #endif
1124
1125         // extract alpha from planar formats
1126         if ( ( pix_fmt == PIX_FMT_YUVA420P
1127 #if defined(FFUDIV) && LIBAVUTIL_VERSION_INT >= ((51<<16)+(35<<8)+101)
1128                         || pix_fmt == PIX_FMT_YUVA444P
1129 #endif
1130                         ) &&
1131                 *format != mlt_image_rgb24a && *format != mlt_image_opengl &&
1132                 frame->data[3] && frame->linesize[3] )
1133         {
1134                 int i;
1135                 uint8_t *src, *dst;
1136
1137                 dst = *alpha = mlt_pool_alloc( width * height );
1138                 src = frame->data[3];
1139
1140                 for ( i = 0; i < height; dst += width, src += frame->linesize[3], i++ )
1141                         memcpy( dst, src, FFMIN( width, frame->linesize[3] ) );
1142         }
1143
1144         if ( *format == mlt_image_yuv420p )
1145         {
1146                 struct SwsContext *context = sws_getContext( width, height, pix_fmt,
1147                         width, height, PIX_FMT_YUV420P, flags, NULL, NULL, NULL);
1148                 AVPicture output;
1149                 output.data[0] = buffer;
1150                 output.data[1] = buffer + width * height;
1151                 output.data[2] = buffer + ( 5 * width * height ) / 4;
1152                 output.linesize[0] = width;
1153                 output.linesize[1] = width >> 1;
1154                 output.linesize[2] = width >> 1;
1155                 set_luma_transfer( context, self->colorspace, -1 );
1156                 sws_scale( context, (const uint8_t* const*) frame->data, frame->linesize, 0, height,
1157                         output.data, output.linesize);
1158                 sws_freeContext( context );
1159         }
1160         else if ( *format == mlt_image_rgb24 )
1161         {
1162                 struct SwsContext *context = sws_getContext( width, height, pix_fmt,
1163                         width, height, PIX_FMT_RGB24, flags | SWS_FULL_CHR_H_INT, NULL, NULL, NULL);
1164                 AVPicture output;
1165                 avpicture_fill( &output, buffer, PIX_FMT_RGB24, width, height );
1166                 set_luma_transfer( context, self->colorspace, self->full_luma );
1167                 sws_scale( context, (const uint8_t* const*) frame->data, frame->linesize, 0, height,
1168                         output.data, output.linesize);
1169                 sws_freeContext( context );
1170         }
1171         else if ( *format == mlt_image_rgb24a || *format == mlt_image_opengl )
1172         {
1173                 struct SwsContext *context = sws_getContext( width, height, pix_fmt,
1174                         width, height, PIX_FMT_RGBA, flags | SWS_FULL_CHR_H_INT, NULL, NULL, NULL);
1175                 AVPicture output;
1176                 avpicture_fill( &output, buffer, PIX_FMT_RGBA, width, height );
1177                 set_luma_transfer( context, self->colorspace, self->full_luma );
1178                 sws_scale( context, (const uint8_t* const*) frame->data, frame->linesize, 0, height,
1179                         output.data, output.linesize);
1180                 sws_freeContext( context );
1181         }
1182         else
1183         {
1184                 struct SwsContext *context = sws_getContext( width, height, pix_fmt,
1185                         width, height, PIX_FMT_YUYV422, flags | SWS_FULL_CHR_H_INP, NULL, NULL, NULL);
1186                 AVPicture output;
1187                 avpicture_fill( &output, buffer, PIX_FMT_YUYV422, width, height );
1188                 set_luma_transfer( context, self->colorspace, -1 );
1189                 sws_scale( context, (const uint8_t* const*) frame->data, frame->linesize, 0, height,
1190                         output.data, output.linesize);
1191                 sws_freeContext( context );
1192         }
1193 }
1194
1195 /** Allocate the image buffer and set it on the frame.
1196 */
1197
1198 static int allocate_buffer( mlt_frame frame, AVCodecContext *codec_context, uint8_t **buffer, mlt_image_format *format, int *width, int *height )
1199 {
1200         int size = 0;
1201
1202         if ( codec_context->width == 0 || codec_context->height == 0 )
1203                 return size;
1204
1205         if ( *format == mlt_image_glsl )
1206                 *format = pick_pix_format( codec_context->pix_fmt );
1207
1208         *width = codec_context->width;
1209         *height = codec_context->height;
1210         size = mlt_image_format_size( *format, *width, *height, NULL );
1211         *buffer = mlt_pool_alloc( size );
1212         if ( *buffer )
1213                 mlt_frame_set_image( frame, *buffer, size, mlt_pool_release );
1214         else
1215                 size = 0;
1216
1217         return size;
1218 }
1219
1220 /** Get an image from a frame.
1221 */
1222
1223 static int producer_get_image( mlt_frame frame, uint8_t **buffer, mlt_image_format *format, int *width, int *height, int writable )
1224 {
1225         // Get the producer
1226         producer_avformat self = mlt_frame_pop_service( frame );
1227         mlt_producer producer = self->parent;
1228
1229         // Get the properties from the frame
1230         mlt_properties frame_properties = MLT_FRAME_PROPERTIES( frame );
1231
1232         // Obtain the frame number of this frame
1233         mlt_position position = mlt_frame_original_position( frame );
1234
1235         // Get the producer properties
1236         mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
1237
1238         pthread_mutex_lock( &self->video_mutex );
1239
1240         // Fetch the video format context
1241         AVFormatContext *context = self->video_format;
1242
1243         // Get the video stream
1244         AVStream *stream = context->streams[ self->video_index ];
1245
1246         // Get codec context
1247         AVCodecContext *codec_context = stream->codec;
1248
1249         uint8_t *alpha = NULL;
1250         int got_picture = 0;
1251         int image_size = 0;
1252
1253         // Get the image cache
1254         if ( ! self->image_cache )
1255         {
1256                 // if cache size supplied by environment variable
1257                 int cache_supplied = getenv( "MLT_AVFORMAT_CACHE" ) != NULL;
1258                 int cache_size = cache_supplied? atoi( getenv( "MLT_AVFORMAT_CACHE" ) ) : 0;
1259
1260                 // cache size supplied via property
1261                 if ( mlt_properties_get( properties, "cache" ) )
1262                 {
1263                         cache_supplied = 1;
1264                         cache_size = mlt_properties_get_int( properties, "cache" );
1265                 }
1266                 if ( mlt_properties_get_int( properties, "noimagecache" ) )
1267                         cache_size = 0;
1268                 // create cache if not disabled
1269                 if ( !cache_supplied || cache_size > 0 )
1270                         self->image_cache = mlt_cache_init();
1271                 // set cache size if supplied
1272                 if ( self->image_cache && cache_supplied )
1273                         mlt_cache_set_size( self->image_cache, cache_size );
1274         }
1275         if ( self->image_cache )
1276         {
1277                 mlt_frame original = mlt_cache_get_frame( self->image_cache, position );
1278                 if ( original )
1279                 {
1280                         mlt_properties orig_props = MLT_FRAME_PROPERTIES( original );
1281                         int size = 0;
1282
1283                         *buffer = mlt_properties_get_data( orig_props, "alpha", &size );
1284                         if (*buffer)
1285                                 mlt_frame_set_alpha( frame, *buffer, size, NULL );
1286                         *buffer = mlt_properties_get_data( orig_props, "image", &size );
1287                         mlt_frame_set_image( frame, *buffer, size, NULL );
1288                         mlt_properties_set_data( frame_properties, "avformat.image_cache", original, 0, (mlt_destructor) mlt_frame_close, NULL );
1289                         *format = mlt_properties_get_int( orig_props, "format" );
1290
1291                         // Set the resolution
1292                         *width = codec_context->width;
1293                         *height = codec_context->height;
1294
1295                         // Workaround 1088 encodings missing cropping info.
1296                         if ( *height == 1088 && mlt_profile_dar( mlt_service_profile( MLT_PRODUCER_SERVICE( producer ) ) ) == 16.0/9.0 )
1297                                 *height = 1080;
1298
1299                         got_picture = 1;
1300                         goto exit_get_image;
1301                 }
1302         }
1303         // Cache miss
1304
1305         // We may want to use the source fps if available
1306         double source_fps = mlt_properties_get_double( properties, "meta.media.frame_rate_num" ) /
1307                 mlt_properties_get_double( properties, "meta.media.frame_rate_den" );
1308
1309         // This is the physical frame position in the source
1310         int64_t req_position = ( int64_t )( position / mlt_producer_get_fps( producer ) * source_fps + 0.5 );
1311
1312         // Determines if we have to decode all frames in a sequence
1313         // Temporary hack to improve intra frame only
1314         int must_decode = !( codec_context->codec && codec_context->codec->name ) || (
1315                                   strcmp( codec_context->codec->name, "dnxhd" ) &&
1316                                   strcmp( codec_context->codec->name, "dvvideo" ) &&
1317                                   strcmp( codec_context->codec->name, "huffyuv" ) &&
1318                                   strcmp( codec_context->codec->name, "mjpeg" ) &&
1319                                   strcmp( codec_context->codec->name, "rawvideo" ) );
1320
1321         double delay = mlt_properties_get_double( properties, "video_delay" );
1322
1323         // Seek if necessary
1324         const char *interp = mlt_properties_get( frame_properties, "rescale.interp" );
1325         int preseek = must_decode
1326 #if defined(FFUDIV) && LIBAVFORMAT_VERSION_INT >= ((53<<16)+(24<<8)+2)
1327                 && ( interp && strcmp( interp, "nearest" ) )
1328 #endif
1329                 && codec_context->has_b_frames;
1330         int paused = seek_video( self, position, req_position, preseek );
1331
1332         // Seek might have reopened the file
1333         context = self->video_format;
1334         stream = context->streams[ self->video_index ];
1335         codec_context = stream->codec;
1336         if ( *format == mlt_image_none ||
1337                         codec_context->pix_fmt == PIX_FMT_ARGB ||
1338                         codec_context->pix_fmt == PIX_FMT_RGBA ||
1339                         codec_context->pix_fmt == PIX_FMT_ABGR ||
1340                         codec_context->pix_fmt == PIX_FMT_BGRA )
1341                 *format = pick_pix_format( codec_context->pix_fmt );
1342
1343         // Duplicate the last image if necessary
1344         if ( self->video_frame && self->video_frame->linesize[0]
1345                  && ( paused || self->current_position >= req_position ) )
1346         {
1347                 // Duplicate it
1348                 if ( ( image_size = allocate_buffer( frame, codec_context, buffer, format, width, height ) ) )
1349                 {
1350                         // Workaround 1088 encodings missing cropping info.
1351                         if ( *height == 1088 && mlt_profile_dar( mlt_service_profile( MLT_PRODUCER_SERVICE( producer ) ) ) == 16.0/9.0 )
1352                                 *height = 1080;
1353 #ifdef VDPAU
1354                         if ( self->vdpau && self->vdpau->buffer )
1355                         {
1356                                 AVPicture picture;
1357                                 picture.data[0] = self->vdpau->buffer;
1358                                 picture.data[2] = self->vdpau->buffer + codec_context->width * codec_context->height;
1359                                 picture.data[1] = self->vdpau->buffer + codec_context->width * codec_context->height * 5 / 4;
1360                                 picture.linesize[0] = codec_context->width;
1361                                 picture.linesize[1] = codec_context->width / 2;
1362                                 picture.linesize[2] = codec_context->width / 2;
1363                                 convert_image( self, (AVFrame*) &picture, *buffer,
1364                                         PIX_FMT_YUV420P, format, *width, *height, &alpha );
1365                         }
1366                         else
1367 #endif
1368                         convert_image( self, self->video_frame, *buffer, codec_context->pix_fmt,
1369                                 format, *width, *height, &alpha );
1370                         got_picture = 1;
1371                 }
1372         }
1373         else
1374         {
1375                 int ret = 0;
1376                 int64_t int_position = 0;
1377                 int decode_errors = 0;
1378
1379                 // Construct an AVFrame for YUV422 conversion
1380                 if ( !self->video_frame )
1381                         self->video_frame = avcodec_alloc_frame( );
1382
1383                 while( ret >= 0 && !got_picture )
1384                 {
1385                         // Read a packet
1386                         if ( self->pkt.stream_index == self->video_index )
1387                                 av_free_packet( &self->pkt );
1388                         av_init_packet( &self->pkt );
1389                         pthread_mutex_lock( &self->packets_mutex );
1390                         if ( mlt_deque_count( self->vpackets ) )
1391                         {
1392                                 AVPacket *tmp = (AVPacket*) mlt_deque_pop_front( self->vpackets );
1393                                 self->pkt = *tmp;
1394                                 free( tmp );
1395                         }
1396                         else
1397                         {
1398                                 ret = av_read_frame( context, &self->pkt );
1399                                 if ( ret >= 0 && !self->seekable && self->pkt.stream_index == self->audio_index )
1400                                 {
1401                                         if ( !av_dup_packet( &self->pkt ) )
1402                                         {
1403                                                 AVPacket *tmp = malloc( sizeof(AVPacket) );
1404                                                 *tmp = self->pkt;
1405                                                 mlt_deque_push_back( self->apackets, tmp );
1406                                         }
1407                                 }
1408                         }
1409                         pthread_mutex_unlock( &self->packets_mutex );
1410
1411                         // We only deal with video from the selected video_index
1412                         if ( ret >= 0 && self->pkt.stream_index == self->video_index && self->pkt.size > 0 )
1413                         {
1414                                 int64_t pts = best_pts( self, self->pkt.pts, self->pkt.dts );
1415                                 if ( pts != AV_NOPTS_VALUE )
1416                                 {
1417                                         if ( !self->seekable && self->first_pts == AV_NOPTS_VALUE )
1418                                                 self->first_pts = pts;
1419                                         if ( self->first_pts != AV_NOPTS_VALUE )
1420                                                 pts -= self->first_pts;
1421                                         else if ( context->start_time != AV_NOPTS_VALUE )
1422                                                 pts -= context->start_time;
1423                                         int_position = ( int64_t )( ( av_q2d( self->video_time_base ) * pts + delay ) * source_fps + 0.5 );
1424                                         if ( int_position == self->last_position )
1425                                                 int_position = self->last_position + 1;
1426                                 }
1427                                 mlt_log_debug( MLT_PRODUCER_SERVICE(producer),
1428                                         "V pkt.pts %"PRId64" pkt.dts %"PRId64" req_pos %"PRId64" cur_pos %"PRId64" pkt_pos %"PRId64"\n",
1429                                         self->pkt.pts, self->pkt.dts, req_position, self->current_position, int_position );
1430
1431                                 // Make a dumb assumption on streams that contain wild timestamps
1432                                 if ( abs( req_position - int_position ) > 999 )
1433                                 {
1434                                         int_position = req_position;
1435                                         mlt_log_warning( MLT_PRODUCER_SERVICE(producer), " WILD TIMESTAMP!\n" );
1436                                 }
1437                                 self->last_position = int_position;
1438
1439                                 // Decode the image
1440                                 if ( must_decode || int_position >= req_position )
1441                                 {
1442 #ifdef VDPAU
1443                                         if ( self->vdpau )
1444                                         {
1445                                                 if ( self->vdpau->decoder == VDP_INVALID_HANDLE )
1446                                                 {
1447                                                         vdpau_decoder_init( self );
1448                                                 }
1449                                                 self->vdpau->is_decoded = 0;
1450                                         }
1451 #endif
1452                                         codec_context->reordered_opaque = int_position;
1453                                         if ( int_position >= req_position )
1454                                                 codec_context->skip_loop_filter = AVDISCARD_NONE;
1455 #if (LIBAVCODEC_VERSION_INT >= ((52<<16)+(26<<8)+0))
1456                                         ret = avcodec_decode_video2( codec_context, self->video_frame, &got_picture, &self->pkt );
1457 #else
1458                                         ret = avcodec_decode_video( codec_context, self->video_frame, &got_picture, self->pkt.data, self->pkt.size );
1459 #endif
1460                                         // Note: decode may fail at the beginning of MPEGfile (B-frames referencing before first I-frame), so allow a few errors.
1461                                         if ( ret < 0 )
1462                                         {
1463                                                 if ( ++decode_errors <= 10 )
1464                                                         ret = 0;
1465                                         }
1466                                         else
1467                                         {
1468                                                 decode_errors = 0;
1469                                         }
1470                                 }
1471
1472                                 if ( got_picture )
1473                                 {
1474                                         // Get position of reordered frame
1475                                         int_position = self->video_frame->reordered_opaque;
1476 #if (LIBAVCODEC_VERSION_INT >= ((52<<16)+(106<<8)+0))
1477                                         pts = best_pts( self, self->video_frame->pkt_pts, self->video_frame->pkt_dts );
1478                                         if ( pts != AV_NOPTS_VALUE )
1479                                         {
1480                                                 if ( self->first_pts != AV_NOPTS_VALUE )
1481                                                         pts -= self->first_pts;
1482                                                 else if ( context->start_time != AV_NOPTS_VALUE )
1483                                                         pts -= context->start_time;
1484                                                 int_position = ( int64_t )( ( av_q2d( self->video_time_base ) * pts + delay ) * source_fps + 0.5 );
1485                                         }
1486 #endif
1487
1488                                         if ( int_position < req_position )
1489                                                 got_picture = 0;
1490                                         else if ( int_position >= req_position )
1491                                                 codec_context->skip_loop_filter = AVDISCARD_NONE;
1492                                 }
1493                                 mlt_log_debug( MLT_PRODUCER_SERVICE(producer), " got_pic %d key %d\n", got_picture, self->pkt.flags & PKT_FLAG_KEY );
1494                         }
1495
1496                         // Now handle the picture if we have one
1497                         if ( got_picture )
1498                         {
1499                                 if ( ( image_size = allocate_buffer( frame, codec_context, buffer, format, width, height ) ) )
1500                                 {
1501                                         // Workaround 1088 encodings missing cropping info.
1502                                         if ( *height == 1088 && mlt_profile_dar( mlt_service_profile( MLT_PRODUCER_SERVICE( producer ) ) ) == 16.0/9.0 )
1503                                                 *height = 1080;
1504 #ifdef VDPAU
1505                                         if ( self->vdpau )
1506                                         {
1507                                                 if ( self->vdpau->is_decoded )
1508                                                 {
1509                                                         struct vdpau_render_state *render = (struct vdpau_render_state*) self->video_frame->data[0];
1510                                                         void *planes[3];
1511                                                         uint32_t pitches[3];
1512                                                         VdpYCbCrFormat dest_format = VDP_YCBCR_FORMAT_YV12;
1513
1514                                                         if ( !self->vdpau->buffer )
1515                                                                 self->vdpau->buffer = mlt_pool_alloc( codec_context->width * codec_context->height * 3 / 2 );
1516                                                         self->video_frame->data[0] = planes[0] = self->vdpau->buffer;
1517                                                         self->video_frame->data[2] = planes[1] = self->vdpau->buffer + codec_context->width * codec_context->height;
1518                                                         self->video_frame->data[1] = planes[2] = self->vdpau->buffer + codec_context->width * codec_context->height * 5 / 4;
1519                                                         self->video_frame->linesize[0] = pitches[0] = codec_context->width;
1520                                                         self->video_frame->linesize[1] = pitches[1] = codec_context->width / 2;
1521                                                         self->video_frame->linesize[2] = pitches[2] = codec_context->width / 2;
1522
1523                                                         VdpStatus status = vdp_surface_get_bits( render->surface, dest_format, planes, pitches );
1524                                                         if ( status == VDP_STATUS_OK )
1525                                                         {
1526                                                                 convert_image( self, self->video_frame, *buffer, PIX_FMT_YUV420P,
1527                                                                         format, *width, *height, &alpha );
1528                                                         }
1529                                                         else
1530                                                         {
1531                                                                 mlt_log_error( MLT_PRODUCER_SERVICE(producer), "VDPAU Error: %s\n", vdp_get_error_string( status ) );
1532                                                                 image_size = self->vdpau->is_decoded = 0;
1533                                                         }
1534                                                 }
1535                                                 else
1536                                                 {
1537                                                         mlt_log_error( MLT_PRODUCER_SERVICE(producer), "VDPAU error in VdpDecoderRender\n" );
1538                                                         image_size = got_picture = 0;
1539                                                 }
1540                                         }
1541                                         else
1542 #endif
1543                                         convert_image( self, self->video_frame, *buffer, codec_context->pix_fmt,
1544                                                 format, *width, *height, &alpha );
1545                                         self->top_field_first |= self->video_frame->top_field_first;
1546                                         self->current_position = int_position;
1547                                 }
1548                                 else
1549                                 {
1550                                         got_picture = 0;
1551                                 }
1552                         }
1553
1554                         // Free packet data if not video and not live audio packet
1555                         if ( self->pkt.stream_index != self->video_index &&
1556                                  !( !self->seekable && self->pkt.stream_index == self->audio_index ) )
1557                                 av_free_packet( &self->pkt );
1558                 }
1559         }
1560
1561         // set alpha
1562         if ( alpha )
1563                 mlt_frame_set_alpha( frame, alpha, (*width) * (*height), mlt_pool_release );
1564
1565         if ( image_size > 0 && self->image_cache )
1566         {
1567                 mlt_properties_set_int( frame_properties, "format", *format );
1568                 mlt_cache_put_frame( self->image_cache, frame );
1569         }
1570
1571         // Try to duplicate last image if there was a decoding failure
1572         // TODO: with multithread decoding a partial frame decoding resulting
1573         // in failure also resets av_frame making test below fail.
1574         if ( !image_size && self->video_frame && self->video_frame->linesize[0] )
1575         {
1576                 // Duplicate it
1577                 if ( ( image_size = allocate_buffer( frame, codec_context, buffer, format, width, height ) ) )
1578                 {
1579                         // Workaround 1088 encodings missing cropping info.
1580                         if ( *height == 1088 && mlt_profile_dar( mlt_service_profile( MLT_PRODUCER_SERVICE( producer ) ) ) == 16.0/9.0 )
1581                                 *height = 1080;
1582 #ifdef VDPAU
1583                         if ( self->vdpau && self->vdpau->buffer )
1584                         {
1585                                 AVPicture picture;
1586                                 picture.data[0] = self->vdpau->buffer;
1587                                 picture.data[2] = self->vdpau->buffer + codec_context->width * codec_context->height;
1588                                 picture.data[1] = self->vdpau->buffer + codec_context->width * codec_context->height * 5 / 4;
1589                                 picture.linesize[0] = codec_context->width;
1590                                 picture.linesize[1] = codec_context->width / 2;
1591                                 picture.linesize[2] = codec_context->width / 2;
1592                                 convert_image( self, (AVFrame*) &picture, *buffer,
1593                                         PIX_FMT_YUV420P, format, *width, *height, &alpha );
1594                         }
1595                         else
1596 #endif
1597                         convert_image( self, self->video_frame, *buffer, codec_context->pix_fmt,
1598                                 format, *width, *height, &alpha );
1599                         got_picture = 1;
1600                 }
1601         }
1602
1603         // Regardless of speed, we expect to get the next frame (cos we ain't too bright)
1604         self->video_expected = position + 1;
1605
1606 exit_get_image:
1607
1608         pthread_mutex_unlock( &self->video_mutex );
1609
1610         // Set the progressive flag
1611         if ( mlt_properties_get( properties, "force_progressive" ) )
1612                 mlt_properties_set_int( frame_properties, "progressive", !!mlt_properties_get_int( properties, "force_progressive" ) );
1613         else if ( self->video_frame )
1614                 mlt_properties_set_int( frame_properties, "progressive", !self->video_frame->interlaced_frame );
1615
1616         // Set the field order property for this frame
1617         if ( mlt_properties_get( properties, "force_tff" ) )
1618                 mlt_properties_set_int( frame_properties, "top_field_first", !!mlt_properties_get_int( properties, "force_tff" ) );
1619         else
1620                 mlt_properties_set_int( frame_properties, "top_field_first", self->top_field_first );
1621
1622         // Set immutable properties of the selected track's (or overridden) source attributes.
1623         mlt_service_lock( MLT_PRODUCER_SERVICE( producer ) );
1624         mlt_properties_set_int( properties, "meta.media.top_field_first", self->top_field_first );
1625         mlt_properties_set_int( properties, "meta.media.progressive", mlt_properties_get_int( frame_properties, "progressive" ) );
1626         mlt_service_unlock( MLT_PRODUCER_SERVICE( producer ) );
1627
1628         // If we already have RGB, then the full range processing either happened already
1629         // or does not apply (RGB source).
1630         if ( *format == mlt_image_rgb24 || *format == mlt_image_rgb24a || *format == mlt_image_opengl )
1631                 mlt_properties_set( frame_properties, "force_full_luma", NULL );
1632
1633         return !got_picture;
1634 }
1635
1636 /** Process properties as AVOptions and apply to AV context obj
1637 */
1638
1639 static void apply_properties( void *obj, mlt_properties properties, int flags )
1640 {
1641         int i;
1642         int count = mlt_properties_count( properties );
1643         for ( i = 0; i < count; i++ )
1644         {
1645                 const char *opt_name = mlt_properties_get_name( properties, i );
1646 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(10<<8)+0)
1647                 const AVOption *opt = av_opt_find( obj, opt_name, NULL, flags, flags );
1648 #else
1649                 const AVOption *opt = av_find_opt( obj, opt_name, NULL, flags, flags );
1650 #endif
1651                 if ( opt_name && mlt_properties_get( properties, opt_name ) )
1652                 {
1653                         if ( opt )
1654 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(12<<8)+0)
1655                                 av_opt_set( obj, opt_name, mlt_properties_get( properties, opt_name), 0 );
1656 #elif LIBAVCODEC_VERSION_INT >= ((52<<16)+(7<<8)+0)
1657                                 av_set_string3( obj, opt_name, mlt_properties_get( properties, opt_name), 0, NULL );
1658 #elif LIBAVCODEC_VERSION_INT >= ((51<<16)+(59<<8)+0)
1659                                 av_set_string2( obj, opt_name, mlt_properties_get( properties, opt_name), 0 );
1660 #else
1661                                 av_set_string( obj, opt_name, mlt_properties_get( properties, opt_name) );
1662 #endif
1663                 }
1664         }
1665 }
1666
1667 /** Initialize the video codec context.
1668  */
1669
1670 static int video_codec_init( producer_avformat self, int index, mlt_properties properties )
1671 {
1672         // Initialise the codec if necessary
1673         if ( !self->video_codec )
1674         {
1675                 // Get the video stream
1676                 AVStream *stream = self->video_format->streams[ index ];
1677
1678                 // Get codec context
1679                 AVCodecContext *codec_context = stream->codec;
1680
1681                 // Find the codec
1682                 AVCodec *codec = avcodec_find_decoder( codec_context->codec_id );
1683 #ifdef VDPAU
1684                 if ( codec_context->codec_id == AV_CODEC_ID_H264 )
1685                 {
1686                         if ( ( codec = avcodec_find_decoder_by_name( "h264_vdpau" ) ) )
1687                         {
1688                                 if ( vdpau_init( self ) )
1689                                 {
1690                                         self->video_codec = codec_context;
1691                                         if ( !vdpau_decoder_init( self ) )
1692                                                 vdpau_fini( self );
1693                                 }
1694                         }
1695                         if ( !self->vdpau )
1696                                 codec = avcodec_find_decoder( codec_context->codec_id );
1697                 }
1698 #endif
1699
1700                 // Initialise multi-threading
1701                 int thread_count = mlt_properties_get_int( properties, "threads" );
1702                 if ( thread_count == 0 && getenv( "MLT_AVFORMAT_THREADS" ) )
1703                         thread_count = atoi( getenv( "MLT_AVFORMAT_THREADS" ) );
1704                 if ( thread_count > 1 )
1705                         codec_context->thread_count = thread_count;
1706
1707                 // If we don't have a codec and we can't initialise it, we can't do much more...
1708                 pthread_mutex_lock( &self->open_mutex );
1709 #if LIBAVCODEC_VERSION_INT >= ((53<<16)+(8<<8)+0)
1710                 if ( codec && avcodec_open2( codec_context, codec, NULL ) >= 0 )
1711 #else
1712                 if ( codec && avcodec_open( codec_context, codec ) >= 0 )
1713 #endif
1714                 {
1715                         // Now store the codec with its destructor
1716                         self->video_codec = codec_context;
1717                 }
1718                 else
1719                 {
1720                         // Remember that we can't use this later
1721                         self->video_index = -1;
1722                         pthread_mutex_unlock( &self->open_mutex );
1723                         return 0;
1724                 }
1725                 pthread_mutex_unlock( &self->open_mutex );
1726
1727                 // Process properties as AVOptions
1728                 apply_properties( codec_context, properties, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM );
1729 #if LIBAVCODEC_VERSION_INT >= ((52<<16)+(122<<8)+0)
1730                 if ( codec->priv_class && codec_context->priv_data )
1731                         apply_properties( codec_context->priv_data, properties, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM );
1732 #endif
1733
1734                 // Reset some image properties
1735                 if ( self->video_codec )
1736                 {
1737                         mlt_properties_set_int( properties, "width", self->video_codec->width );
1738                         mlt_properties_set_int( properties, "height", self->video_codec->height );
1739                         get_aspect_ratio( properties, stream, self->video_codec );
1740                 }
1741
1742                 // Start with the muxer frame rate.
1743 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(42<<8)+0)
1744                 AVRational frame_rate = stream->avg_frame_rate;
1745 #else
1746                 AVRational frame_rate = stream->r_frame_rate;
1747 #endif
1748                 double fps = av_q2d( frame_rate );
1749
1750 #if LIBAVFORMAT_VERSION_MAJOR < 55
1751                 // Verify and sanitize the muxer frame rate.
1752                 if ( isnan( fps ) || isinf( fps ) || fps == 0 )
1753                 {
1754                         frame_rate = stream->r_frame_rate;
1755                         fps = av_q2d( frame_rate );
1756                 }
1757 #endif
1758 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(42<<8)+0) && LIBAVFORMAT_VERSION_MAJOR < 55
1759                 // With my samples when r_frame_rate != 1000 but avg_frame_rate is valid,
1760                 // avg_frame_rate gives some approximate value that does not well match the media.
1761                 // Also, on my sample where r_frame_rate = 1000, using avg_frame_rate directly
1762                 // results in some very choppy output, but some value slightly different works
1763                 // great.
1764                 if ( av_q2d( stream->r_frame_rate ) >= 1000 && av_q2d( stream->avg_frame_rate ) > 0 )
1765                 {
1766                         frame_rate = av_d2q( av_q2d( stream->avg_frame_rate ), 1024 );
1767                         fps = av_q2d( frame_rate );
1768                 }
1769 #endif
1770                 // XXX frame rates less than 1 fps are not considered sane
1771                 if ( isnan( fps ) || isinf( fps ) || fps < 1.0 )
1772                 {
1773                         // Get the frame rate from the codec.
1774                         frame_rate = av_inv_q( self->video_codec->time_base );
1775                         frame_rate.den *= self->video_codec->ticks_per_frame;
1776                         fps = av_q2d( frame_rate );
1777                 }
1778                 if ( isnan( fps ) || isinf( fps ) || fps < 1.0 )
1779                 {
1780                         // Use the profile frame rate if all else fails.
1781                         mlt_profile profile = mlt_service_profile( MLT_PRODUCER_SERVICE( self->parent ) );
1782                         frame_rate.num = profile->frame_rate_num;
1783                         frame_rate.den = profile->frame_rate_den;
1784                 }
1785
1786                 self->video_time_base = stream->time_base;
1787                 if ( mlt_properties_get( properties, "force_fps" ) )
1788                 {
1789                         AVRational force_fps = av_d2q( mlt_properties_get_double( properties, "force_fps" ), 1024 );
1790                         self->video_time_base.num *= frame_rate.num * force_fps.den;
1791                         self->video_time_base.den *= frame_rate.den * force_fps.num;
1792                         frame_rate = force_fps;
1793                 }
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                 // Set the YUV colorspace from override or detect
1798                 self->colorspace = mlt_properties_get_int( properties, "force_colorspace" );
1799 #if LIBAVCODEC_VERSION_INT > ((52<<16)+(28<<8)+0)
1800                 if ( ! self->colorspace )
1801                 {
1802                         switch ( self->video_codec->colorspace )
1803                         {
1804                         case AVCOL_SPC_SMPTE240M:
1805                                 self->colorspace = 240;
1806                                 break;
1807                         case AVCOL_SPC_BT470BG:
1808                         case AVCOL_SPC_SMPTE170M:
1809                                 self->colorspace = 601;
1810                                 break;
1811                         case AVCOL_SPC_BT709:
1812                                 self->colorspace = 709;
1813                                 break;
1814                         default:
1815                                 // This is a heuristic Charles Poynton suggests in "Digital Video and HDTV"
1816                                 self->colorspace = self->video_codec->width * self->video_codec->height > 750000 ? 709 : 601;
1817                                 break;
1818                         }
1819                 }
1820 #endif
1821                 // Let apps get chosen colorspace
1822                 mlt_properties_set_int( properties, "meta.media.colorspace", self->colorspace );
1823
1824                 self->full_luma = -1;
1825 #if LIBAVCODEC_VERSION_INT >= ((52<<16)+(72<<8)+2)
1826                 mlt_log_debug( MLT_PRODUCER_SERVICE(self->parent), "color_range %d\n", codec_context->color_range );
1827                 if ( codec_context->color_range == AVCOL_RANGE_JPEG )
1828                         self->full_luma = 1;
1829 #endif
1830                 if ( mlt_properties_get( properties, "set.force_full_luma" ) )
1831                         self->full_luma = mlt_properties_get_int( properties, "set.force_full_luma" );
1832         }
1833         return self->video_codec && self->video_index > -1;
1834 }
1835
1836 /** Set up video handling.
1837 */
1838
1839 static void producer_set_up_video( producer_avformat self, mlt_frame frame )
1840 {
1841         // Get the producer
1842         mlt_producer producer = self->parent;
1843
1844         // Get the properties
1845         mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
1846
1847         // Fetch the video format context
1848         AVFormatContext *context = self->video_format;
1849
1850         // Get the video_index
1851         int index = mlt_properties_get_int( properties, "video_index" );
1852
1853         // Reopen the file if necessary
1854         if ( !context && index > -1 )
1855         {
1856                 producer_open( self, mlt_service_profile( MLT_PRODUCER_SERVICE(producer) ),
1857                         mlt_properties_get( properties, "resource" ), 1 );
1858                 context = self->video_format;
1859         }
1860
1861         // Exception handling for video_index
1862         if ( context && index >= (int) context->nb_streams )
1863         {
1864                 // Get the last video stream
1865                 for ( index = context->nb_streams - 1;
1866                           index >= 0 && context->streams[ index ]->codec->codec_type != CODEC_TYPE_VIDEO;
1867                           index-- );
1868                 mlt_properties_set_int( properties, "video_index", index );
1869         }
1870         if ( context && index > -1 && context->streams[ index ]->codec->codec_type != CODEC_TYPE_VIDEO )
1871         {
1872                 // Invalidate the video stream
1873                 index = -1;
1874                 mlt_properties_set_int( properties, "video_index", index );
1875         }
1876
1877         // Update the video properties if the index changed
1878         if ( index != self->video_index )
1879         {
1880                 // Reset the video properties if the index changed
1881                 self->video_index = index;
1882                 pthread_mutex_lock( &self->open_mutex );
1883                 if ( self->video_codec )
1884                         avcodec_close( self->video_codec );
1885                 self->video_codec = NULL;
1886                 pthread_mutex_unlock( &self->open_mutex );
1887         }
1888
1889         // Get the frame properties
1890         mlt_properties frame_properties = MLT_FRAME_PROPERTIES( frame );
1891
1892         // Get the codec
1893         if ( context && index > -1 && video_codec_init( self, index, properties ) )
1894         {
1895                 // Set the frame properties
1896                 double force_aspect_ratio = mlt_properties_get_double( properties, "force_aspect_ratio" );
1897                 double aspect_ratio = ( force_aspect_ratio > 0.0 ) ?
1898                         force_aspect_ratio : mlt_properties_get_double( properties, "aspect_ratio" );
1899
1900                 // Set the width and height
1901                 mlt_properties_set_int( frame_properties, "width", self->video_codec->width );
1902                 mlt_properties_set_int( frame_properties, "height", self->video_codec->height );
1903                 mlt_properties_set_int( properties, "meta.media.width", self->video_codec->width );
1904                 mlt_properties_set_int( properties, "meta.media.height", self->video_codec->height );
1905                 mlt_properties_set_double( frame_properties, "aspect_ratio", aspect_ratio );
1906                 mlt_properties_set_int( frame_properties, "colorspace", self->colorspace );
1907
1908                 // Workaround 1088 encodings missing cropping info.
1909                 if ( self->video_codec->height == 1088 && mlt_profile_dar( mlt_service_profile( MLT_PRODUCER_SERVICE( producer ) ) ) == 16.0/9.0 )
1910                 {
1911                         mlt_properties_set_int( properties, "meta.media.height", 1080 );
1912                 }
1913
1914                 // Add our image operation
1915                 mlt_frame_push_service( frame, self );
1916                 mlt_frame_push_get_image( frame, producer_get_image );
1917         }
1918         else
1919         {
1920                 // If something failed, use test card image
1921                 mlt_properties_set_int( frame_properties, "test_image", 1 );
1922         }
1923 }
1924
1925 static int seek_audio( producer_avformat self, mlt_position position, double timecode )
1926 {
1927         int paused = 0;
1928
1929         // Seek if necessary
1930         if ( self->seekable && ( position != self->audio_expected || self->last_position < 0 ) )
1931         {
1932                 if ( self->last_position == POSITION_INITIAL )
1933                 {
1934                         int video_index = self->video_index;
1935                         if ( video_index == -1 )
1936                                 video_index = first_video_index( self );
1937                         if ( video_index >= 0 )
1938                                 find_first_pts( self, video_index );
1939                 }
1940
1941                 if ( position + 1 == self->audio_expected )
1942                 {
1943                         // We're paused - silence required
1944                         paused = 1;
1945                 }
1946                 else if ( position < self->audio_expected || position - self->audio_expected >= 12 )
1947                 {
1948                         AVFormatContext *context = self->audio_format;
1949                         int64_t timestamp = ( int64_t )( timecode * AV_TIME_BASE + 0.5 );
1950                         if ( context->start_time != AV_NOPTS_VALUE )
1951                                 timestamp += context->start_time;
1952                         if ( timestamp < 0 )
1953                                 timestamp = 0;
1954
1955                         // Set to the real timecode
1956                         if ( av_seek_frame( context, -1, timestamp, AVSEEK_FLAG_BACKWARD ) != 0 )
1957                                 paused = 1;
1958
1959                         // Clear the usage in the audio buffer
1960                         int i = MAX_AUDIO_STREAMS + 1;
1961                         while ( --i )
1962                                 self->audio_used[i - 1] = 0;
1963                 }
1964         }
1965         return paused;
1966 }
1967
1968 static int sample_bytes( AVCodecContext *context )
1969 {
1970 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(8<<8)+0)
1971         return av_get_bytes_per_sample( context->sample_fmt );
1972 #elif LIBAVCODEC_VERSION_MAJOR >= 53
1973         return av_get_bits_per_sample_fmt( context->sample_fmt ) / 8;
1974 #else
1975         return av_get_bits_per_sample_format( context->sample_fmt ) / 8;
1976 #endif
1977 }
1978
1979 static void planar_to_interleaved( uint8_t *dest, uint8_t *src, int samples, int channels, int bytes_per_sample )
1980 {
1981         int s, c;
1982         for ( s = 0; s < samples; s++ )
1983         {
1984                 for ( c = 0; c < channels; c++ )
1985                 {
1986                         memcpy( dest, src + ( c * samples + s ) * bytes_per_sample, bytes_per_sample );
1987                         dest += bytes_per_sample;
1988                 }
1989         }
1990 }
1991
1992 static void planar_to_interleaved2( uint8_t *dest, AVFrame *src, int samples, int channels, int bytes_per_sample )
1993 {
1994         int s, c;
1995         for ( s = 0; s < samples; s++ )
1996         {
1997                 for ( c = 0; c < channels; c++ )
1998                 {
1999                         memcpy( dest, &src->data[c][s * bytes_per_sample], bytes_per_sample );
2000                         dest += bytes_per_sample;
2001                 }
2002         }
2003 }
2004
2005 static int decode_audio( producer_avformat self, int *ignore, AVPacket pkt, int channels, int samples, double timecode, double fps )
2006 {
2007         // Fetch the audio_format
2008         AVFormatContext *context = self->audio_format;
2009
2010         // Get the current stream index
2011         int index = pkt.stream_index;
2012
2013         // Get codec context
2014         AVCodecContext *codec_context = self->audio_codec[ index ];
2015
2016         // Obtain the audio buffers
2017         uint8_t *audio_buffer = self->audio_buffer[ index ];
2018         uint8_t *decode_buffer = self->decode_buffer[ index ];
2019
2020         int audio_used = self->audio_used[ index ];
2021         uint8_t *ptr = pkt.data;
2022         int len = pkt.size;
2023         int ret = 0;
2024
2025         while ( ptr && ret >= 0 && len > 0 )
2026         {
2027                 int sizeof_sample = sample_bytes( codec_context );
2028                 int data_size = self->audio_buffer_size[ index ];
2029
2030                 // Decode the audio
2031 #if LIBAVCODEC_VERSION_MAJOR >= 55
2032                 if ( !self->audio_frame )
2033                         self->audio_frame = avcodec_alloc_frame();
2034                 else
2035                         avcodec_get_frame_defaults( self->audio_frame );
2036                 ret = avcodec_decode_audio4( codec_context, self->audio_frame, &data_size, &pkt );
2037                 if ( data_size ) {
2038                         data_size = av_samples_get_buffer_size( NULL, codec_context->channels,
2039                                 self->audio_frame->nb_samples, codec_context->sample_fmt, 1 );
2040                         decode_buffer = self->audio_frame->data[0];
2041                 }
2042 #else
2043                 ret = avcodec_decode_audio3( codec_context, (int16_t*) decode_buffer, &data_size, &pkt );
2044 #endif
2045                 if ( ret < 0 )
2046                 {
2047                         mlt_log_warning( MLT_PRODUCER_SERVICE(self->parent), "audio decoding error %d\n", ret );
2048                         break;
2049                 }
2050
2051                 pkt.size = len -= ret;
2052                 pkt.data = ptr += ret;
2053
2054                 // If decoded successfully
2055                 if ( data_size > 0 )
2056                 {
2057                         // Figure out how many samples will be needed after resampling
2058                         int convert_samples = data_size / codec_context->channels / sample_bytes( codec_context );
2059
2060                         // Resize audio buffer to prevent overflow
2061                         if ( ( audio_used + convert_samples ) * channels * sizeof_sample > self->audio_buffer_size[ index ] )
2062                         {
2063                                 self->audio_buffer_size[ index ] = ( audio_used + convert_samples * 2 ) * channels * sizeof_sample;
2064                                 audio_buffer = self->audio_buffer[ index ] = mlt_pool_realloc( audio_buffer, self->audio_buffer_size[ index ] );
2065                         }
2066                         uint8_t *dest = &audio_buffer[ audio_used * codec_context->channels * sizeof_sample ];
2067                         switch ( codec_context->sample_fmt )
2068                         {
2069 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(17<<8)+0)
2070                         case AV_SAMPLE_FMT_U8P:
2071                         case AV_SAMPLE_FMT_S16P:
2072                         case AV_SAMPLE_FMT_S32P:
2073                         case AV_SAMPLE_FMT_FLTP:
2074 #if LIBAVCODEC_VERSION_MAJOR >= 55
2075                                 planar_to_interleaved2( dest, self->audio_frame, convert_samples, codec_context->channels, sizeof_sample );
2076 #else
2077                                 planar_to_interleaved( dest, decode_buffer, convert_samples, codec_context->channels, sizeof_sample );
2078 #endif
2079                                 break;
2080 #endif
2081                         default:
2082                                 // Straight copy to audio buffer
2083                                 memcpy( dest, decode_buffer, data_size );
2084                         }
2085                         audio_used += convert_samples;
2086
2087                         // Handle ignore
2088                         while ( *ignore && audio_used )
2089                         {
2090                                 *ignore -= 1;
2091                                 audio_used -= audio_used > samples ? samples : audio_used;
2092                                 memmove( audio_buffer, &audio_buffer[ samples * codec_context->channels * sizeof_sample ],
2093                                                  audio_used * sizeof_sample );
2094                         }
2095                 }
2096         }
2097
2098         // If we're behind, ignore this packet
2099         // Skip this on non-seekable, audio-only inputs.
2100         if ( pkt.pts >= 0 && ( self->seekable || self->video_format ) && *ignore == 0 && audio_used > samples / 2 )
2101         {
2102                 int64_t pts = pkt.pts;
2103                 if ( self->first_pts != AV_NOPTS_VALUE )
2104                         pts -= self->first_pts;
2105                 else if ( context->start_time != AV_NOPTS_VALUE )
2106                         pts -= context->start_time;
2107                 double timebase = av_q2d( context->streams[ index ]->time_base );
2108                 int64_t int_position = ( int64_t )( timebase * pts * fps + 0.5 );
2109                 int64_t req_position = ( int64_t )( timecode * fps + 0.5 );
2110
2111                 mlt_log_debug( MLT_PRODUCER_SERVICE(self->parent),
2112                         "A pkt.pts %"PRId64" pkt.dts %"PRId64" req_pos %"PRId64" cur_pos %"PRId64" pkt_pos %"PRId64"\n",
2113                         pkt.pts, pkt.dts, req_position, self->current_position, int_position );
2114
2115                 if ( int_position > 0 )
2116                 {
2117                         if ( int_position < req_position )
2118                                 // We are behind, so skip some
2119                                 *ignore = req_position - int_position;
2120                         else if ( self->audio_index != INT_MAX && int_position > req_position + 2 )
2121                                 // We are ahead, so seek backwards some more
2122                                 seek_audio( self, req_position, timecode - 1.0 );
2123                 }
2124                 // Cancel the find_first_pts() in seek_audio()
2125                 if ( self->video_index == -1 && self->last_position == POSITION_INITIAL )
2126                         self->last_position = int_position;
2127         }
2128
2129         self->audio_used[ index ] = audio_used;
2130
2131         return ret;
2132 }
2133
2134 /** Get the audio from a frame.
2135 */
2136 static int producer_get_audio( mlt_frame frame, void **buffer, mlt_audio_format *format, int *frequency, int *channels, int *samples )
2137 {
2138         // Get the producer
2139         producer_avformat self = mlt_frame_pop_audio( frame );
2140
2141         pthread_mutex_lock( &self->audio_mutex );
2142
2143         // Obtain the frame number of this frame
2144         mlt_position position = mlt_frame_original_position( frame );
2145
2146         // Calculate the real time code
2147         double real_timecode = producer_time_of_frame( self->parent, position );
2148
2149         // Get the producer fps
2150         double fps = mlt_producer_get_fps( self->parent );
2151
2152         // Number of frames to ignore (for ffwd)
2153         int ignore[ MAX_AUDIO_STREAMS ] = { 0 };
2154
2155         // Flag for paused (silence)
2156         int paused = seek_audio( self, position, real_timecode );
2157
2158         // Initialize ignore for all streams from the seek return value
2159         int i = MAX_AUDIO_STREAMS;
2160         while ( i-- )
2161                 ignore[i] = ignore[0];
2162
2163         // Fetch the audio_format
2164         AVFormatContext *context = self->audio_format;
2165
2166         int sizeof_sample = sizeof( int16_t );
2167
2168         // Determine the tracks to use
2169         int index = self->audio_index;
2170         int index_max = self->audio_index + 1;
2171         if ( self->audio_index == INT_MAX )
2172         {
2173                 index = 0;
2174                 index_max = FFMIN( MAX_AUDIO_STREAMS, context->nb_streams );
2175                 *channels = self->total_channels;
2176                 *samples = mlt_sample_calculator( fps, FFMAX( self->max_frequency, *frequency ), position );
2177                 *frequency = FFMAX( self->max_frequency, *frequency );
2178         }
2179
2180         // Initialize the buffers
2181         for ( ; index < index_max && index < MAX_AUDIO_STREAMS; index++ )
2182         {
2183                 // Get codec context
2184                 AVCodecContext *codec_context = self->audio_codec[ index ];
2185
2186                 if ( codec_context && !self->audio_buffer[ index ] )
2187                 {
2188                         codec_context->request_channels = self->audio_index == INT_MAX ? codec_context->channels : *channels;
2189                         sizeof_sample = sample_bytes( codec_context );
2190
2191                         // Check for audio buffer and create if necessary
2192                         self->audio_buffer_size[ index ] = MAX_AUDIO_FRAME_SIZE * sizeof_sample;
2193                         self->audio_buffer[ index ] = mlt_pool_alloc( self->audio_buffer_size[ index ] );
2194
2195                         // Check for decoder buffer and create if necessary
2196                         self->decode_buffer[ index ] = av_malloc( self->audio_buffer_size[ index ] );
2197                 }
2198         }
2199
2200         // Get the audio if required
2201         if ( !paused && *frequency > 0 )
2202         {
2203                 int ret = 0;
2204                 int got_audio = 0;
2205                 AVPacket pkt;
2206
2207                 av_init_packet( &pkt );
2208
2209                 // Caller requested number samples based on requested sample rate.
2210                 if ( self->audio_index != INT_MAX )
2211                         *samples = mlt_sample_calculator( fps, self->audio_codec[ self->audio_index ]->sample_rate, position );
2212
2213                 while ( ret >= 0 && !got_audio )
2214                 {
2215                         // Check if the buffer already contains the samples required
2216                         if ( self->audio_index != INT_MAX &&
2217                                  self->audio_used[ self->audio_index ] >= *samples &&
2218                                  ignore[ self->audio_index ] == 0 )
2219                         {
2220                                 got_audio = 1;
2221                                 break;
2222                         }
2223                         else if ( self->audio_index == INT_MAX )
2224                         {
2225                                 // Check if there is enough audio for all streams
2226                                 got_audio = 1;
2227                                 for ( index = 0; got_audio && index < index_max; index++ )
2228                                         if ( ( self->audio_codec[ index ] && self->audio_used[ index ] < *samples ) || ignore[ index ] )
2229                                                 got_audio = 0;
2230                                 if ( got_audio )
2231                                         break;
2232                         }
2233
2234                         // Read a packet
2235                         pthread_mutex_lock( &self->packets_mutex );
2236                         if ( mlt_deque_count( self->apackets ) )
2237                         {
2238                                 AVPacket *tmp = (AVPacket*) mlt_deque_pop_front( self->apackets );
2239                                 pkt = *tmp;
2240                                 free( tmp );
2241                         }
2242                         else
2243                         {
2244                                 ret = av_read_frame( context, &pkt );
2245                                 if ( ret >= 0 && !self->seekable && pkt.stream_index == self->video_index )
2246                                 {
2247                                         if ( !av_dup_packet( &pkt ) )
2248                                         {
2249                                                 AVPacket *tmp = malloc( sizeof(AVPacket) );
2250                                                 *tmp = pkt;
2251                                                 mlt_deque_push_back( self->vpackets, tmp );
2252                                         }
2253                                 }
2254                         }
2255                         pthread_mutex_unlock( &self->packets_mutex );
2256
2257                         // We only deal with audio from the selected audio index
2258                         index = pkt.stream_index;
2259                         if ( index < MAX_AUDIO_STREAMS && ret >= 0 && pkt.data && pkt.size > 0 && ( index == self->audio_index ||
2260                                  ( self->audio_index == INT_MAX && context->streams[ index ]->codec->codec_type == CODEC_TYPE_AUDIO ) ) )
2261                         {
2262                                 int channels2 = self->audio_codec[index]->channels;
2263                                 ret = decode_audio( self, &ignore[index], pkt, channels2, *samples, real_timecode, fps );
2264                         }
2265
2266                         if ( self->seekable || index != self->video_index )
2267                                 av_free_packet( &pkt );
2268
2269                 }
2270
2271                 // Set some additional return values
2272                 *format = mlt_audio_s16;
2273                 if ( self->audio_index != INT_MAX )
2274                 {
2275                         index = self->audio_index;
2276                         *channels = self->audio_codec[ index ]->channels;
2277                         *frequency = self->audio_codec[ index ]->sample_rate;
2278                         *format = pick_audio_format( self->audio_codec[ index ]->sample_fmt );
2279                         sizeof_sample = sample_bytes( self->audio_codec[ index ] );
2280                 }
2281                 else if ( self->audio_index == INT_MAX )
2282                 {
2283                         for ( index = 0; index < index_max; index++ )
2284                                 if ( self->audio_codec[ index ] )
2285                                 {
2286                                         // XXX: This only works if all audio tracks have the same sample format.
2287                                         *format = pick_audio_format( self->audio_codec[ index ]->sample_fmt );
2288                                         sizeof_sample = sample_bytes( self->audio_codec[ index ] );
2289                                         break;
2290                                 }
2291                 }
2292
2293                 // Allocate and set the frame's audio buffer
2294                 int size = mlt_audio_format_size( *format, *samples, *channels );
2295                 *buffer = mlt_pool_alloc( size );
2296                 mlt_frame_set_audio( frame, *buffer, *format, size, mlt_pool_release );
2297
2298                 // Interleave tracks if audio_index=all
2299                 if ( self->audio_index == INT_MAX )
2300                 {
2301                         uint8_t *dest = *buffer;
2302                         int i;
2303                         for ( i = 0; i < *samples; i++ )
2304                         {
2305                                 for ( index = 0; index < index_max; index++ )
2306                                 if ( self->audio_codec[ index ] )
2307                                 {
2308                                         int current_channels = self->audio_codec[ index ]->channels;
2309                                         uint8_t *src = self->audio_buffer[ index ] + i * current_channels * sizeof_sample;
2310                                         memcpy( dest, src, current_channels * sizeof_sample );
2311                                         dest += current_channels * sizeof_sample;
2312                                 }
2313                         }
2314                         for ( index = 0; index < index_max; index++ )
2315                         if ( self->audio_codec[ index ] && self->audio_used[ index ] >= *samples )
2316                         {
2317                                 int current_channels = self->audio_codec[ index ]->channels;
2318                                 uint8_t *src = self->audio_buffer[ index ] + *samples * current_channels * sizeof_sample;
2319                                 self->audio_used[index] -= *samples;
2320                                 memmove( self->audio_buffer[ index ], src, self->audio_used[ index ] * current_channels * sizeof_sample );
2321                         }
2322                 }
2323                 // Copy a single track to the output buffer
2324                 else
2325                 {
2326                         index = self->audio_index;
2327
2328                         // Now handle the audio if we have enough
2329                         if ( self->audio_used[ index ] > 0 )
2330                         {
2331                                 uint8_t *src = self->audio_buffer[ index ];
2332                                 // copy samples from audio_buffer
2333                                 size = self->audio_used[ index ] < *samples ? self->audio_used[ index ] : *samples;
2334                                 memcpy( *buffer, src, size * *channels * sizeof_sample );
2335                                 // supply the remaining requested samples as silence
2336                                 if ( *samples > self->audio_used[ index ] )
2337                                         memset( *buffer + size * *channels * sizeof_sample, 0, ( *samples - self->audio_used[ index ] ) * *channels * sizeof_sample );
2338                                 // reposition the samples within audio_buffer
2339                                 self->audio_used[ index ] -= size;
2340                                 memmove( src, src + size * *channels * sizeof_sample, self->audio_used[ index ] * *channels * sizeof_sample );
2341                         }
2342                         else
2343                         {
2344                                 // Otherwise fill with silence
2345                                 memset( *buffer, 0, *samples * *channels * sizeof_sample );
2346                         }
2347                 }
2348         }
2349         else
2350         {
2351                 // Get silence and don't touch the context
2352                 mlt_frame_get_audio( frame, buffer, format, frequency, channels, samples );
2353         }
2354
2355         // Regardless of speed (other than paused), we expect to get the next frame
2356         if ( !paused )
2357                 self->audio_expected = position + 1;
2358
2359         pthread_mutex_unlock( &self->audio_mutex );
2360
2361         return 0;
2362 }
2363
2364 /** Initialize the audio codec context.
2365 */
2366
2367 static int audio_codec_init( producer_avformat self, int index, mlt_properties properties )
2368 {
2369         // Initialise the codec if necessary
2370         if ( !self->audio_codec[ index ] )
2371         {
2372                 // Get codec context
2373                 AVCodecContext *codec_context = self->audio_format->streams[index]->codec;
2374
2375                 // Find the codec
2376                 AVCodec *codec = avcodec_find_decoder( codec_context->codec_id );
2377
2378                 // If we don't have a codec and we can't initialise it, we can't do much more...
2379                 pthread_mutex_lock( &self->open_mutex );
2380 #if LIBAVCODEC_VERSION_INT >= ((53<<16)+(8<<8)+0)
2381                 if ( codec && avcodec_open2( codec_context, codec, NULL ) >= 0 )
2382 #else
2383                 if ( codec && avcodec_open( codec_context, codec ) >= 0 )
2384 #endif
2385                 {
2386                         // Now store the codec with its destructor
2387                         if ( self->audio_codec[ index ] )
2388                                 avcodec_close( self->audio_codec[ index ] );
2389                         self->audio_codec[ index ] = codec_context;
2390                 }
2391                 else
2392                 {
2393                         // Remember that we can't use self later
2394                         self->audio_index = -1;
2395                 }
2396                 pthread_mutex_unlock( &self->open_mutex );
2397
2398                 // Process properties as AVOptions
2399                 apply_properties( codec_context, properties, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_DECODING_PARAM );
2400                 if ( codec && codec->priv_class && codec_context->priv_data )
2401                         apply_properties( codec_context->priv_data, properties, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_DECODING_PARAM );
2402         }
2403         return self->audio_codec[ index ] && self->audio_index > -1;
2404 }
2405
2406 /** Set up audio handling.
2407 */
2408
2409 static void producer_set_up_audio( producer_avformat self, mlt_frame frame )
2410 {
2411         // Get the producer
2412         mlt_producer producer = self->parent;
2413
2414         // Get the properties
2415         mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
2416
2417         // Fetch the audio format context
2418         AVFormatContext *context = self->audio_format;
2419
2420         mlt_properties frame_properties = MLT_FRAME_PROPERTIES( frame );
2421
2422         // Get the audio_index
2423         int index = mlt_properties_get_int( properties, "audio_index" );
2424
2425         // Handle all audio tracks
2426         if ( self->audio_index > -1 &&
2427              mlt_properties_get( properties, "audio_index" ) &&
2428              !strcmp( mlt_properties_get( properties, "audio_index" ), "all" ) )
2429                 index = INT_MAX;
2430
2431         // Reopen the file if necessary
2432         if ( !context && self->audio_index > -1 && index > -1 )
2433         {
2434                 producer_open( self, mlt_service_profile( MLT_PRODUCER_SERVICE(producer) ),
2435                         mlt_properties_get( properties, "resource" ), 1 );
2436                 context = self->audio_format;
2437         }
2438
2439         // Exception handling for audio_index
2440         if ( context && index >= (int) context->nb_streams && index < INT_MAX )
2441         {
2442                 for ( index = context->nb_streams - 1;
2443                           index >= 0 && context->streams[ index ]->codec->codec_type != CODEC_TYPE_AUDIO;
2444                           index-- );
2445                 mlt_properties_set_int( properties, "audio_index", index );
2446         }
2447         if ( context && index > -1 && index < INT_MAX &&
2448                  context->streams[ index ]->codec->codec_type != CODEC_TYPE_AUDIO )
2449         {
2450                 index = self->audio_index;
2451                 mlt_properties_set_int( properties, "audio_index", index );
2452         }
2453         if ( context && index > -1 && index < INT_MAX &&
2454                  pick_audio_format( context->streams[ index ]->codec->sample_fmt ) == mlt_audio_none )
2455         {
2456                 index = -1;
2457         }
2458
2459         // Update the audio properties if the index changed
2460         if ( context && index > -1 && index != self->audio_index )
2461         {
2462                 pthread_mutex_lock( &self->open_mutex );
2463                 if ( self->audio_codec[ self->audio_index ] )
2464                         avcodec_close( self->audio_codec[ self->audio_index ] );
2465                 self->audio_codec[ self->audio_index ] = NULL;
2466                 pthread_mutex_unlock( &self->open_mutex );
2467         }
2468         if ( self->audio_index != -1 )
2469                 self->audio_index = index;
2470         else
2471                 index = -1;
2472
2473         // Get the codec(s)
2474         if ( context && index == INT_MAX )
2475         {
2476                 mlt_properties_set_int( frame_properties, "audio_frequency", self->max_frequency );
2477                 mlt_properties_set_int( frame_properties, "audio_channels", self->total_channels );
2478                 for ( index = 0; index < context->nb_streams; index++ )
2479                 {
2480                         if ( context->streams[ index ]->codec->codec_type == CODEC_TYPE_AUDIO )
2481                                 audio_codec_init( self, index, properties );
2482                 }
2483         }
2484         else if ( context && index > -1 && audio_codec_init( self, index, properties ) )
2485         {
2486                 // Set the frame properties
2487                 if ( index < MAX_AUDIO_STREAMS )
2488                 {
2489                         mlt_properties_set_int( frame_properties, "audio_frequency", self->audio_codec[ index ]->sample_rate );
2490                         mlt_properties_set_int( frame_properties, "audio_channels", self->audio_codec[ index ]->channels );
2491                 }
2492         }
2493         if ( context && index > -1 )
2494         {
2495                 // Add our audio operation
2496                 mlt_frame_push_audio( frame, self );
2497                 mlt_frame_push_audio( frame, producer_get_audio );
2498         }
2499 }
2500
2501 /** Our get frame implementation.
2502 */
2503
2504 static int producer_get_frame( mlt_producer producer, mlt_frame_ptr frame, int index )
2505 {
2506         // Access the private data
2507         mlt_service service = MLT_PRODUCER_SERVICE( producer );
2508         mlt_cache_item cache_item = mlt_service_cache_get( service, "producer_avformat" );
2509         producer_avformat self = mlt_cache_item_data( cache_item, NULL );
2510
2511         // If cache miss
2512         if ( !self )
2513         {
2514                 self = calloc( 1, sizeof( struct producer_avformat_s ) );
2515                 producer->child = self;
2516                 self->parent = producer;
2517                 mlt_service_cache_put( service, "producer_avformat", self, 0, (mlt_destructor) producer_avformat_close );
2518                 cache_item = mlt_service_cache_get( service, "producer_avformat" );
2519         }
2520
2521         // Create an empty frame
2522         *frame = mlt_frame_init( service);
2523
2524         if ( *frame )
2525         {
2526                 mlt_properties_set_data( MLT_FRAME_PROPERTIES(*frame), "avformat_cache", cache_item, 0, (mlt_destructor) mlt_cache_item_close, NULL );
2527         }
2528         else
2529         {
2530                 mlt_cache_item_close( cache_item );
2531                 return 1;
2532         }
2533
2534         // Update timecode on the frame we're creating
2535         mlt_frame_set_position( *frame, mlt_producer_position( producer ) );
2536
2537         // Set up the video
2538         producer_set_up_video( self, *frame );
2539
2540         // Set up the audio
2541         producer_set_up_audio( self, *frame );
2542
2543         // Set the position of this producer
2544         mlt_position position = self->seekable ? mlt_producer_frame( producer ) : self->nonseek_position++;
2545         mlt_properties_set_position( MLT_FRAME_PROPERTIES( *frame ), "original_position", position );
2546
2547         // Calculate the next timecode
2548         mlt_producer_prepare_next( producer );
2549
2550         return 0;
2551 }
2552
2553 static void producer_avformat_close( producer_avformat self )
2554 {
2555         mlt_log_debug( NULL, "producer_avformat_close\n" );
2556
2557         // Cleanup av contexts
2558         av_free_packet( &self->pkt );
2559         av_free( self->video_frame );
2560         av_free( self->audio_frame );
2561         pthread_mutex_lock( &self->open_mutex );
2562         int i;
2563         for ( i = 0; i < MAX_AUDIO_STREAMS; i++ )
2564         {
2565                 mlt_pool_release( self->audio_buffer[i] );
2566                 av_free( self->decode_buffer[i] );
2567                 if ( self->audio_codec[i] )
2568                         avcodec_close( self->audio_codec[i] );
2569                 self->audio_codec[i] = NULL;
2570         }
2571         if ( self->video_codec )
2572                 avcodec_close( self->video_codec );
2573         self->video_codec = NULL;
2574         // Close the file
2575 #if LIBAVFORMAT_VERSION_INT >= ((53<<16)+(17<<8)+0)
2576         if ( self->dummy_context )
2577                 avformat_close_input( &self->dummy_context );
2578         if ( self->seekable && self->audio_format )
2579                 avformat_close_input( &self->audio_format );
2580         if ( self->video_format )
2581                 avformat_close_input( &self->video_format );
2582 #else
2583         if ( self->dummy_context )
2584                 av_close_input_file( self->dummy_context );
2585         if ( self->seekable && self->audio_format )
2586                 av_close_input_file( self->audio_format );
2587         if ( self->video_format )
2588                 av_close_input_file( self->video_format );
2589 #endif
2590         pthread_mutex_unlock( &self->open_mutex );
2591 #ifdef VDPAU
2592         vdpau_producer_close( self );
2593 #endif
2594         if ( self->image_cache )
2595                 mlt_cache_close( self->image_cache );
2596
2597         // Cleanup the mutexes
2598         if ( self->is_mutex_init )
2599         {
2600                 pthread_mutex_destroy( &self->audio_mutex );
2601                 pthread_mutex_destroy( &self->video_mutex );
2602                 pthread_mutex_destroy( &self->packets_mutex );
2603                 pthread_mutex_destroy( &self->open_mutex );
2604         }
2605
2606         // Cleanup the packet queues
2607         AVPacket *pkt;
2608         if ( self->apackets )
2609         {
2610                 while ( ( pkt = mlt_deque_pop_back( self->apackets ) ) )
2611                 {
2612                         av_free_packet( pkt );
2613                         free( pkt );
2614                 }
2615                 mlt_deque_close( self->apackets );
2616                 self->apackets = NULL;
2617         }
2618         if ( self->vpackets )
2619         {
2620                 while ( ( pkt = mlt_deque_pop_back( self->vpackets ) ) )
2621                 {
2622                         av_free_packet( pkt );
2623                         free( pkt );
2624                 }
2625                 mlt_deque_close( self->vpackets );
2626                 self->vpackets = NULL;
2627         }
2628
2629         free( self );
2630 }
2631
2632 static void producer_close( mlt_producer parent )
2633 {
2634         // Remove this instance from the cache
2635         mlt_service_cache_purge( MLT_PRODUCER_SERVICE(parent) );
2636
2637         // Close the parent
2638         parent->close = NULL;
2639         mlt_producer_close( parent );
2640
2641         // Free the memory
2642         free( parent );
2643 }