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 = { codec_context->time_base.den, codec_context->time_base.num * codec_context->ticks_per_frame };
 342                                 mlt_properties_set_double( meta_media, key, av_q2d( frame_rate ) );
 343                                 snprintf( key, sizeof(key), "meta.media.%d.codec.pix_fmt", i );
 344 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(3<<8)+0)
 345                                 mlt_properties_set( meta_media, key, av_get_pix_fmt_name( codec_context->pix_fmt ) );
 346 #else
 347                                 mlt_properties_set( meta_media, key, avcodec_get_pix_fmt_name( codec_context->pix_fmt ) );
 348 #endif
 349                                 snprintf( key, sizeof(key), "meta.media.%d.codec.sample_aspect_ratio", i );
 350                                 mlt_properties_set_double( meta_media, key, av_q2d( codec_context->sample_aspect_ratio ) );
 351                                 snprintf( key, sizeof(key), "meta.media.%d.codec.colorspace", i );
 352                                 switch ( codec_context->colorspace )
 353                                 {
 354                                 case AVCOL_SPC_SMPTE240M:
 355                                         mlt_properties_set_int( meta_media, key, 240 );
 356                                         break;
 357                                 case AVCOL_SPC_BT470BG:
 358                                 case AVCOL_SPC_SMPTE170M:
 359                                         mlt_properties_set_int( meta_media, key, 601 );
 360                                         break;
 361                                 case AVCOL_SPC_BT709:
 362                                         mlt_properties_set_int( meta_media, key, 709 );
 363                                         break;
 364                                 default:
 365                                         // This is a heuristic Charles Poynton suggests in "Digital Video and HDTV"
 366                                         mlt_properties_set_int( meta_media, key, codec_context->width * codec_context->height > 750000 ? 709 : 601 );
 367                                         break;
 368                                 }
 369                                 break;
 370                         case CODEC_TYPE_AUDIO:
 371                                 if ( !codec_context->channels )
 372                                         break;
 373                                 // Use first audio stream
 374                                 if ( self->audio_index < 0 && pick_audio_format( codec_context->sample_fmt ) != mlt_audio_none )
 375                                         self->audio_index = i;
 376
 377                                 mlt_properties_set( meta_media, key, "audio" );
 378                                 snprintf( key, sizeof(key), "meta.media.%d.codec.sample_fmt", i );
 379                                 mlt_properties_set( meta_media, key, av_get_sample_fmt_name( codec_context->sample_fmt ) );
 380                                 snprintf( key, sizeof(key), "meta.media.%d.codec.sample_rate", i );
 381                                 mlt_properties_set_int( meta_media, key, codec_context->sample_rate );
 382                                 snprintf( key, sizeof(key), "meta.media.%d.codec.channels", i );
 383                                 mlt_properties_set_int( meta_media, key, codec_context->channels );
 384                                 break;
 385                         default:
 386                                 break;
 387                 }
 388 //              snprintf( key, sizeof(key), "meta.media.%d.stream.time_base", i );
 389 //              mlt_properties_set_double( meta_media, key, av_q2d( context->streams[ i ]->time_base ) );
 390                 snprintf( key, sizeof(key), "meta.media.%d.codec.name", i );
 391                 mlt_properties_set( meta_media, key, codec->name );
 392                 snprintf( key, sizeof(key), "meta.media.%d.codec.long_name", i );
 393                 mlt_properties_set( meta_media, key, codec->long_name );
 394                 snprintf( key, sizeof(key), "meta.media.%d.codec.bit_rate", i );
 395                 mlt_properties_set_int( meta_media, key, codec_context->bit_rate );
 396 //              snprintf( key, sizeof(key), "meta.media.%d.codec.time_base", i );
 397 //              mlt_properties_set_double( meta_media, key, av_q2d( codec_context->time_base ) );
 398 //              snprintf( key, sizeof(key), "meta.media.%d.codec.profile", i );
 399 //              mlt_properties_set_int( meta_media, key, codec_context->profile );
 400 //              snprintf( key, sizeof(key), "meta.media.%d.codec.level", i );
 401 //              mlt_properties_set_int( meta_media, key, codec_context->level );
 402
 403                 // Read Metadata
 404 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(8<<8)+0)
 405                 while ( ( tag = av_dict_get( stream->metadata, "", tag, AV_DICT_IGNORE_SUFFIX ) ) )
 406 #else
 407                 while ( ( tag = av_metadata_get( stream->metadata, "", tag, AV_METADATA_IGNORE_SUFFIX ) ) )
 408 #endif
 409                 {
 410                         if ( tag->value && strcmp( tag->value, "" ) && strcmp( tag->value, "und" ) )
 411                         {
 412                                 snprintf( key, sizeof(key), "meta.attr.%d.stream.%s.markup", i, tag->key );
 413                                 mlt_properties_set( meta_media, key, tag->value );
 414                         }
 415                 }
 416         }
 417 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(8<<8)+0)
 418         while ( ( tag = av_dict_get( context->metadata, "", tag, AV_DICT_IGNORE_SUFFIX ) ) )
 419 #else
 420         while ( ( tag = av_metadata_get( context->metadata, "", tag, AV_METADATA_IGNORE_SUFFIX ) ) )
 421 #endif
 422         {
 423                 if ( tag->value && strcmp( tag->value, "" ) && strcmp( tag->value, "und" ) )
 424                 {
 425                         snprintf( key, sizeof(key), "meta.attr.%s.markup", tag->key );
 426                         mlt_properties_set( meta_media, key, tag->value );
 427                 }
 428         }
 429
 430         return meta_media;
 431 }
 432
 433 static void get_aspect_ratio( mlt_properties properties, AVStream *stream, AVCodecContext *codec_context )
 434 {
 435         AVRational sar = stream->sample_aspect_ratio;
 436         if ( sar.num <= 0 || sar.den <= 0 )
 437                 sar = codec_context->sample_aspect_ratio;
 438         if ( sar.num <= 0 || sar.den <= 0 )
 439                 sar.num = sar.den = 1;
 440         mlt_properties_set_int( properties, "meta.media.sample_aspect_num", sar.num );
 441         mlt_properties_set_int( properties, "meta.media.sample_aspect_den", sar.den );
 442         mlt_properties_set_double( properties, "aspect_ratio", av_q2d( sar ) );
 443 }
 444
 445 #if LIBAVFORMAT_VERSION_INT > ((53<<16)+(6<<8)+0)
 446 static char* parse_url( mlt_profile profile, const char* URL, AVInputFormat **format, AVDictionary **params )
 447 #else
 448 static char* parse_url( mlt_profile profile, const char* URL, AVInputFormat **format, AVFormatParameters *params )
 449 #endif
 450 {
 451         if ( !URL ) return NULL;
 452
 453         char *result = NULL;
 454         char *protocol = strdup( URL );
 455         char *url = strchr( protocol, ':' );
 456
 457         // Only if there is not a protocol specification that avformat can handle
 458 #if LIBAVFORMAT_VERSION_MAJOR >= 53
 459         if ( url && avio_check( URL, 0 ) < 0 )
 460 #else
 461         if ( url && !url_exist( URL ) )
 462 #endif
 463         {
 464                 // Truncate protocol string
 465                 url[0] = 0;
 466                 mlt_log_debug( NULL, "%s: protocol=%s resource=%s\n", __FUNCTION__, protocol, url + 1 );
 467
 468                 // Lookup the format
 469                 *format = av_find_input_format( protocol );
 470
 471                 // Eat the format designator
 472                 result = ++url;
 473
 474                 if ( *format )
 475                 {
 476 #if LIBAVFORMAT_VERSION_INT > ((53<<16)+(6<<8)+0)
 477                         // support for legacy width and height parameters
 478                         char *width = NULL;
 479                         char *height = NULL;
 480 #else
 481                         // These are required by video4linux2 (defaults)
 482                         params->width = profile->width;
 483                         params->height = profile->height;
 484                         if ( !strstr( URL, "&frame_rate" ) )
 485                                 params->time_base = (AVRational){ profile->frame_rate_den, profile->frame_rate_num };
 486                         params->channels = 2;
 487                         params->sample_rate = 48000;
 488 #endif
 489
 490                         // Parse out params
 491                         url = strchr( url, '?' );
 492                         while ( url )
 493                         {
 494                                 url[0] = 0;
 495                                 char *name = strdup( ++url );
 496                                 char *value = strchr( name, '=' );
 497                                 if ( !value )
 498                                         // Also accept : as delimiter for backwards compatibility.
 499                                         value = strchr( name, ':' );
 500                                 if ( value )
 501                                 {
 502                                         value[0] = 0;
 503                                         value++;
 504                                         char *t = strchr( value, '&' );
 505                                         if ( t )
 506                                                 t[0] = 0;
 507 #if LIBAVFORMAT_VERSION_INT > ((53<<16)+(6<<8)+0)
 508                                         // translate old parameters to new av_dict names
 509                                         if ( !strcmp( name, "frame_rate" ) )
 510                                                 av_dict_set( params, "framerate", value, 0 );
 511                                         else if ( !strcmp( name, "pix_fmt" ) )
 512                                                 av_dict_set( params, "pixel_format", value, 0 );
 513                                         else if ( !strcmp( name, "width" ) )
 514                                                 width = strdup( value );
 515                                         else if ( !strcmp( name, "height" ) )
 516                                                 height = strdup( value );
 517                                         else
 518                                                 // generic demux/device option support
 519                                                 av_dict_set( params, name, value, 0 );
 520 #else
 521                                         if ( !strcmp( name, "frame_rate" ) )
 522                                                 params->time_base.den = atoi( value );
 523                                         else if ( !strcmp( name, "frame_rate_base" ) )
 524                                                 params->time_base.num = atoi( value );
 525                                         else if ( !strcmp( name, "sample_rate" ) )
 526                                                 params->sample_rate = atoi( value );
 527                                         else if ( !strcmp( name, "channel" ) )
 528                                                 params->channel = atoi( value );
 529                                         else if ( !strcmp( name, "channels" ) )
 530                                                 params->channels = atoi( value );
 531                                         else if ( !strcmp( name, "pix_fmt" ) )
 532                                                 params->pix_fmt = av_get_pix_fmt( value );
 533                                         else if ( !strcmp( name, "width" ) )
 534                                                 params->width = atoi( value );
 535                                         else if ( !strcmp( name, "height" ) )
 536                                                 params->height = atoi( value );
 537                                         else if ( !strcmp( name, "standard" ) )
 538                                                 params->standard = strdup( value );
 539 #endif
 540                                 }
 541                                 free( name );
 542                                 url = strchr( url, '&' );
 543                         }
 544 #if LIBAVFORMAT_VERSION_INT > ((53<<16)+(6<<8)+0)
 545                         // continued support for legacy width and height parameters
 546                         if ( width && height )
 547                         {
 548                                 char *s = malloc( strlen( width ) + strlen( height ) + 2 );
 549                                 strcpy( s, width );
 550                                 strcat( s, "x");
 551                                 strcat( s, height );
 552                                 av_dict_set( params, "video_size", s, 0 );
 553                                 free( s );
 554                         }
 555                         if ( width ) free( width );
 556                         if ( height ) free ( height );
 557 #endif
 558                 }
 559                 result = strdup( result );
 560         }
 561         else
 562         {
 563                 result = strdup( URL );
 564         }
 565         free( protocol );
 566         return result;
 567 }
 568
 569 static int get_basic_info( producer_avformat self, mlt_profile profile, const char *filename )
 570 {
 571         int error = 0;
 572
 573         // Get the properties
 574         mlt_properties properties = MLT_PRODUCER_PROPERTIES( self->parent );
 575
 576         AVFormatContext *format = self->video_format;
 577
 578         // Get the duration
 579         if ( !mlt_properties_get_int( properties, "_length_computed" ) )
 580         {
 581                 // The _length_computed flag prevents overwriting explicity set length/out/eof properties
 582                 // when producer_open is called after initial call when restoring or reseting the producer.
 583                 if ( format->duration != AV_NOPTS_VALUE )
 584                 {
 585                         // This isn't going to be accurate for all formats
 586                         // We will treat everything with the producer fps.
 587                         mlt_position frames = ( mlt_position )( int )( format->duration *
 588                                 profile->frame_rate_num / profile->frame_rate_den / AV_TIME_BASE);
 589                         mlt_properties_set_position( properties, "out", frames - 1 );
 590                         mlt_properties_set_position( properties, "length", frames );
 591                         mlt_properties_set_int( properties, "_length_computed", 1 );
 592                 }
 593                 else
 594                 {
 595                         // Set live sources to run forever
 596                         mlt_properties_set_position( properties, "length", INT_MAX );
 597                         mlt_properties_set_position( properties, "out", INT_MAX - 1 );
 598                         mlt_properties_set( properties, "eof", "loop" );
 599                         mlt_properties_set_int( properties, "_length_computed", 1 );
 600                 }
 601         }
 602
 603         // Check if we're seekable
 604         // avdevices are typically AVFMT_NOFILE and not seekable
 605         self->seekable = !format->iformat || !( format->iformat->flags & AVFMT_NOFILE );
 606         if ( format->pb )
 607         {
 608                 // protocols can indicate if they support seeking
 609 #if LIBAVFORMAT_VERSION_MAJOR >= 53
 610                 self->seekable = format->pb->seekable;
 611 #else
 612                 URLContext *uc = url_fileno( format->pb );
 613                 if ( uc )
 614                         self->seekable = !uc->is_streamed;
 615 #endif
 616         }
 617         if ( self->seekable )
 618         {
 619                 // Do a more rigourous test of seekable on a disposable context
 620                 self->seekable = av_seek_frame( format, -1, format->start_time, AVSEEK_FLAG_BACKWARD ) >= 0;
 621                 mlt_properties_set_int( properties, "seekable", self->seekable );
 622                 self->dummy_context = format;
 623 #if LIBAVFORMAT_VERSION_INT > ((53<<16)+(6<<8)+0)
 624                 self->video_format = NULL;
 625                 avformat_open_input( &self->video_format, filename, NULL, NULL );
 626                 avformat_find_stream_info( self->video_format, NULL );
 627 #else
 628                 av_open_input_file( &self->video_format, filename, NULL, 0, NULL );
 629                 av_find_stream_info( self->video_format );
 630 #endif
 631                 format = self->video_format;
 632         }
 633
 634         // Fetch the width, height and aspect ratio
 635         if ( self->video_index != -1 )
 636         {
 637                 AVCodecContext *codec_context = format->streams[ self->video_index ]->codec;
 638                 mlt_properties_set_int( properties, "width", codec_context->width );
 639                 mlt_properties_set_int( properties, "height", codec_context->height );
 640                 get_aspect_ratio( properties, format->streams[ self->video_index ], codec_context );
 641
 642                 // Verify that we can convert this to YUV 4:2:2
 643                 // TODO: we can now also return RGB and RGBA and quite possibly more in the future.
 644                 struct SwsContext *context = sws_getContext( codec_context->width, codec_context->height, codec_context->pix_fmt,
 645                         codec_context->width, codec_context->height, PIX_FMT_YUYV422, SWS_BILINEAR, NULL, NULL, NULL);
 646                 if ( context )
 647                         sws_freeContext( context );
 648                 else
 649                         error = 1;
 650         }
 651         return error;
 652 }
 653
 654 /** Open the file.
 655 */
 656
 657 static int producer_open( producer_avformat self, mlt_profile profile, const char *URL, int take_lock )
 658 {
 659         // Return an error code (0 == no error)
 660         int error = 0;
 661         mlt_properties properties = MLT_PRODUCER_PROPERTIES( self->parent );
 662
 663         // Lock the service
 664         if ( take_lock )
 665         {
 666                 if ( !self->is_mutex_init )
 667                 {
 668                         pthread_mutex_init( &self->audio_mutex, NULL );
 669                         pthread_mutex_init( &self->video_mutex, NULL );
 670                         pthread_mutex_init( &self->packets_mutex, NULL );
 671                         pthread_mutex_init( &self->open_mutex, NULL );
 672                         self->is_mutex_init = 1;
 673                 }
 674                 pthread_mutex_lock( &self->audio_mutex );
 675                 pthread_mutex_lock( &self->video_mutex );
 676         }
 677         mlt_events_block( properties, self->parent );
 678
 679         // Parse URL
 680         AVInputFormat *format = NULL;
 681 #if LIBAVFORMAT_VERSION_INT > ((53<<16)+(6<<8)+0)
 682         AVDictionary *params = NULL;
 683 #else
 684         AVFormatParameters params;
 685         memset( &params, 0, sizeof(params) );
 686 #endif
 687         char *filename = parse_url( profile, URL, &format, &params );
 688
 689         // Now attempt to open the file or device with filename
 690 #if LIBAVFORMAT_VERSION_INT > ((53<<16)+(6<<8)+0)
 691         error = avformat_open_input( &self->video_format, filename, format, &params ) < 0;
 692         if ( error )
 693                 // If the URL is a network stream URL, then we probably need to open with full URL
 694                 error = avformat_open_input( &self->video_format, URL, format, &params ) < 0;
 695 #else
 696         error = av_open_input_file( &self->video_format, filename, format, 0, &params ) < 0;
 697         if ( error )
 698                 // If the URL is a network stream URL, then we probably need to open with full URL
 699                 error = av_open_input_file( &self->video_format, URL, format, 0, &params ) < 0;
 700 #endif
 701
 702         // Set MLT properties onto video AVFormatContext
 703         if ( !error && self->video_format )
 704         {
 705                 apply_properties( self->video_format, properties, AV_OPT_FLAG_DECODING_PARAM );
 706                 if ( self->video_format->iformat && self->video_format->iformat->priv_class && self->video_format->priv_data )
 707                         apply_properties( self->video_format->priv_data, properties, AV_OPT_FLAG_DECODING_PARAM );
 708         }
 709
 710 #if LIBAVFORMAT_VERSION_INT > ((53<<16)+(6<<8)+0)
 711         av_dict_free( &params );
 712 #else
 713         // Cleanup AVFormatParameters
 714         if ( params.standard )
 715                 free( (void*) params.standard );
 716 #endif
 717
 718         // If successful, then try to get additional info
 719         if ( !error && self->video_format )
 720         {
 721                 // Get the stream info
 722 #if LIBAVFORMAT_VERSION_INT > ((53<<16)+(6<<8)+0)
 723                 error = avformat_find_stream_info( self->video_format, NULL ) < 0;
 724 #else
 725                 error = av_find_stream_info( self->video_format ) < 0;
 726 #endif
 727
 728                 // Continue if no error
 729                 if ( !error && self->video_format )
 730                 {
 731                         // Find default audio and video streams
 732                         find_default_streams( self );
 733                         error = get_basic_info( self, profile, filename );
 734
 735                         // Initialize position info
 736                         self->first_pts = AV_NOPTS_VALUE;
 737                         self->last_position = POSITION_INITIAL;
 738
 739                         if ( !self->audio_format )
 740                         {
 741                                 // We're going to cheat here - for seekable A/V files, we will have separate contexts
 742                                 // to support independent seeking of audio from video.
 743                                 // TODO: Is this really necessary?
 744                                 if ( self->audio_index != -1 && self->video_index != -1 )
 745                                 {
 746                                         if ( self->seekable )
 747                                         {
 748                                                 // And open again for our audio context
 749 #if LIBAVFORMAT_VERSION_INT > ((53<<16)+(6<<8)+0)
 750                                                 avformat_open_input( &self->audio_format, filename, NULL, NULL );
 751                                                 apply_properties( self->audio_format, properties, AV_OPT_FLAG_DECODING_PARAM );
 752                                                 if ( self->audio_format->iformat && self->audio_format->iformat->priv_class && self->audio_format->priv_data )
 753                                                         apply_properties( self->audio_format->priv_data, properties, AV_OPT_FLAG_DECODING_PARAM );
 754                                                 avformat_find_stream_info( self->audio_format, NULL );
 755 #else
 756                                                 av_open_input_file( &self->audio_format, filename, NULL, 0, NULL );
 757                                                 apply_properties( self->audio_format, properties, AV_OPT_FLAG_DECODING_PARAM );
 758 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(110<<8)+0)
 759                         if ( self->audio_format->iformat && self->audio_format->iformat->priv_class && self->audio_format->priv_data )
 760                             apply_properties( self->audio_format->priv_data, properties, AV_OPT_FLAG_DECODING_PARAM );
 761 #endif
 762                                                 av_find_stream_info( self->audio_format );
 763 #endif
 764                                         }
 765                                         else
 766                                         {
 767                                                 self->audio_format = self->video_format;
 768                                         }
 769                                 }
 770                                 else if ( self->audio_index != -1 )
 771                                 {
 772                                         // We only have an audio context
 773                                         self->audio_format = self->video_format;
 774                                         self->video_format = NULL;
 775                                 }
 776                                 else if ( self->video_index == -1 )
 777                                 {
 778                                         // Something has gone wrong
 779                                         error = -1;
 780                                 }
 781                                 if ( self->audio_format && !self->audio_streams )
 782                                         get_audio_streams_info( self );
 783                         }
 784                 }
 785         }
 786         if ( filename )
 787                 free( filename );
 788         if ( !error )
 789         {
 790                 self->apackets = mlt_deque_init();
 791                 self->vpackets = mlt_deque_init();
 792         }
 793
 794         if ( self->dummy_context )
 795         {
 796                 pthread_mutex_lock( &self->open_mutex );
 797 #if LIBAVFORMAT_VERSION_INT >= ((53<<16)+(17<<8)+0)
 798                 avformat_close_input( &self->dummy_context );
 799 #else
 800                 av_close_input_file( self->dummy_context );
 801 #endif
 802                 self->dummy_context = NULL;
 803                 pthread_mutex_unlock( &self->open_mutex );
 804         }
 805
 806         // Unlock the service
 807         if ( take_lock )
 808         {
 809                 pthread_mutex_unlock( &self->audio_mutex );
 810                 pthread_mutex_unlock( &self->video_mutex );
 811         }
 812         mlt_events_unblock( properties, self->parent );
 813
 814         return error;
 815 }
 816
 817 static void prepare_reopen( producer_avformat self )
 818 {
 819         mlt_service_lock( MLT_PRODUCER_SERVICE( self->parent ) );
 820         pthread_mutex_lock( &self->audio_mutex );
 821         pthread_mutex_lock( &self->open_mutex );
 822
 823         int i;
 824         for ( i = 0; i < MAX_AUDIO_STREAMS; i++ )
 825         {
 826                 mlt_pool_release( self->audio_buffer[i] );
 827                 self->audio_buffer[i] = NULL;
 828                 av_free( self->decode_buffer[i] );
 829                 self->decode_buffer[i] = NULL;
 830                 if ( self->audio_codec[i] )
 831                         avcodec_close( self->audio_codec[i] );
 832                 self->audio_codec[i] = NULL;
 833         }
 834         if ( self->video_codec )
 835                 avcodec_close( self->video_codec );
 836         self->video_codec = NULL;
 837
 838 #if LIBAVFORMAT_VERSION_INT >= ((53<<16)+(17<<8)+0)
 839         if ( self->seekable && self->audio_format )
 840                 avformat_close_input( &self->audio_format );
 841         if ( self->video_format )
 842                 avformat_close_input( &self->video_format );
 843 #else
 844         if ( self->seekable && self->audio_format )
 845                 av_close_input_file( self->audio_format );
 846         if ( self->video_format )
 847                 av_close_input_file( self->video_format );
 848 #endif
 849         self->audio_format = NULL;
 850         self->video_format = NULL;
 851         pthread_mutex_unlock( &self->open_mutex );
 852
 853         // Cleanup the packet queues
 854         AVPacket *pkt;
 855         if ( self->apackets )
 856         {
 857                 while ( ( pkt = mlt_deque_pop_back( self->apackets ) ) )
 858                 {
 859                         av_free_packet( pkt );
 860                         free( pkt );
 861                 }
 862                 mlt_deque_close( self->apackets );
 863                 self->apackets = NULL;
 864         }
 865         if ( self->vpackets )
 866         {
 867                 while ( ( pkt = mlt_deque_pop_back( self->vpackets ) ) )
 868                 {
 869                         av_free_packet( pkt );
 870                         free( pkt );
 871                 }
 872                 mlt_deque_close( self->vpackets );
 873                 self->vpackets = NULL;
 874         }
 875         pthread_mutex_unlock( &self->audio_mutex );
 876         mlt_service_unlock( MLT_PRODUCER_SERVICE( self->parent ) );
 877 }
 878
 879 static int64_t best_pts( producer_avformat self, int64_t pts, int64_t dts )
 880 {
 881         self->invalid_pts_counter += pts == AV_NOPTS_VALUE;
 882         self->invalid_dts_counter += dts == AV_NOPTS_VALUE;
 883         if ( ( self->invalid_pts_counter <= self->invalid_dts_counter
 884                    || dts == AV_NOPTS_VALUE ) && pts != AV_NOPTS_VALUE )
 885                 return pts;
 886         else
 887                 return dts;
 888 }
 889
 890 static void find_first_pts( producer_avformat self, int video_index )
 891 {
 892         // find initial PTS
 893         AVFormatContext *context = self->video_format? self->video_format : self->audio_format;
 894         int ret = 0;
 895         int toscan = 500;
 896         AVPacket pkt;
 897
 898         while ( ret >= 0 && toscan-- > 0 )
 899         {
 900                 ret = av_read_frame( context, &pkt );
 901                 if ( ret >= 0 && pkt.stream_index == video_index && ( pkt.flags & PKT_FLAG_KEY ) )
 902                 {
 903                         mlt_log_debug( MLT_PRODUCER_SERVICE(self->parent),
 904                                 "first_pts %"PRId64" dts %"PRId64" pts_dts_delta %d\n",
 905                                 pkt.pts, pkt.dts, (int)(pkt.pts - pkt.dts) );
 906                         self->first_pts = best_pts( self, pkt.pts, pkt.dts );
 907                         if ( self->first_pts != AV_NOPTS_VALUE )
 908                                 toscan = 0;
 909                 }
 910                 av_free_packet( &pkt );
 911         }
 912         av_seek_frame( context, -1, 0, AVSEEK_FLAG_BACKWARD );
 913 }
 914
 915 static int seek_video( producer_avformat self, mlt_position position,
 916         int64_t req_position, int preseek )
 917 {
 918         mlt_producer producer = self->parent;
 919         int paused = 0;
 920
 921         if ( self->seekable && ( position != self->video_expected || self->last_position < 0 ) )
 922         {
 923                 mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
 924
 925                 // Fetch the video format context
 926                 AVFormatContext *context = self->video_format;
 927
 928                 // Get the video stream
 929                 AVStream *stream = context->streams[ self->video_index ];
 930
 931                 // Get codec context
 932                 AVCodecContext *codec_context = stream->codec;
 933
 934                 // We may want to use the source fps if available
 935                 double source_fps = mlt_properties_get_double( properties, "meta.media.frame_rate_num" ) /
 936                         mlt_properties_get_double( properties, "meta.media.frame_rate_den" );
 937
 938                 if ( self->last_position == POSITION_INITIAL )
 939                         find_first_pts( self, self->video_index );
 940
 941                 if ( self->video_frame && position + 1 == self->video_expected )
 942                 {
 943                         // We're paused - use last image
 944                         paused = 1;
 945                 }
 946                 else if ( self->seekable && ( position < self->video_expected || position - self->video_expected >= 12 || self->last_position < 0 ) )
 947                 {
 948                         // Calculate the timestamp for the requested frame
 949                         int64_t timestamp = req_position / ( av_q2d( self->video_time_base ) * source_fps );
 950                         if ( req_position <= 0 )
 951                                 timestamp = 0;
 952                         else if ( self->first_pts != AV_NOPTS_VALUE )
 953                                 timestamp += self->first_pts;
 954                         else if ( context->start_time != AV_NOPTS_VALUE )
 955                                 timestamp += context->start_time;
 956                         if ( preseek && av_q2d( self->video_time_base ) != 0 )
 957                                 timestamp -= 2 / av_q2d( self->video_time_base );
 958                         if ( timestamp < 0 )
 959                                 timestamp = 0;
 960                         mlt_log_debug( MLT_PRODUCER_SERVICE(producer), "seeking timestamp %"PRId64" position " MLT_POSITION_FMT " expected "MLT_POSITION_FMT" last_pos %"PRId64"\n",
 961                                 timestamp, position, self->video_expected, self->last_position );
 962
 963                         // Seek to the timestamp
 964                         codec_context->skip_loop_filter = AVDISCARD_NONREF;
 965                         av_seek_frame( context, self->video_index, timestamp, AVSEEK_FLAG_BACKWARD );
 966
 967                         // flush any pictures still in decode buffer
 968                         avcodec_flush_buffers( codec_context );
 969
 970                         // Remove the cached info relating to the previous position
 971                         self->current_position = POSITION_INVALID;
 972                         self->last_position = POSITION_INVALID;
 973                         av_freep( &self->video_frame );
 974                 }
 975         }
 976         return paused;
 977 }
 978
 979 /** Convert a frame position to a time code.
 980 */
 981
 982 static double producer_time_of_frame( mlt_producer producer, mlt_position position )
 983 {
 984         return ( double )position / mlt_producer_get_fps( producer );
 985 }
 986
 987 // Collect information about all audio streams
 988
 989 static void get_audio_streams_info( producer_avformat self )
 990 {
 991         // Fetch the audio format context
 992         AVFormatContext *context = self->audio_format;
 993         int i;
 994
 995         for ( i = 0;
 996                   i < context->nb_streams;
 997                   i++ )
 998         {
 999                 if ( context->streams[i]->codec->codec_type == CODEC_TYPE_AUDIO )
1000                 {
1001                         AVCodecContext *codec_context = context->streams[i]->codec;
1002                         AVCodec *codec = avcodec_find_decoder( codec_context->codec_id );
1003
1004                         // If we don't have a codec and we can't initialise it, we can't do much more...
1005                         pthread_mutex_lock( &self->open_mutex );
1006 #if LIBAVCODEC_VERSION_INT >= ((53<<16)+(8<<8)+0)
1007                         if ( codec && avcodec_open2( codec_context, codec, NULL ) >= 0 )
1008 #else
1009                         if ( codec && avcodec_open( codec_context, codec ) >= 0 )
1010 #endif
1011                         {
1012                                 self->audio_streams++;
1013                                 self->audio_max_stream = i;
1014                                 self->total_channels += codec_context->channels;
1015                                 if ( codec_context->channels > self->max_channel )
1016                                         self->max_channel = codec_context->channels;
1017                                 if ( codec_context->sample_rate > self->max_frequency )
1018                                         self->max_frequency = codec_context->sample_rate;
1019                                 avcodec_close( codec_context );
1020                         }
1021                         pthread_mutex_unlock( &self->open_mutex );
1022                 }
1023         }
1024         mlt_log_verbose( NULL, "[producer avformat] audio: total_streams %d max_stream %d total_channels %d max_channels %d\n",
1025                 self->audio_streams, self->audio_max_stream, self->total_channels, self->max_channel );
1026 }
1027
1028 static void set_luma_transfer( struct SwsContext *context, int colorspace, int use_full_range )
1029 {
1030         int *coefficients;
1031         const int *new_coefficients;
1032         int full_range;
1033         int brightness, contrast, saturation;
1034
1035         if ( sws_getColorspaceDetails( context, &coefficients, &full_range, &coefficients, &full_range,
1036                         &brightness, &contrast, &saturation ) != -1 )
1037         {
1038                 // Don't change these from defaults unless explicitly told to.
1039                 if ( use_full_range >= 0 )
1040                         full_range = use_full_range;
1041                 switch ( colorspace )
1042                 {
1043                 case 170:
1044                 case 470:
1045                 case 601:
1046                 case 624:
1047                         new_coefficients = sws_getCoefficients( SWS_CS_ITU601 );
1048                         break;
1049                 case 240:
1050                         new_coefficients = sws_getCoefficients( SWS_CS_SMPTE240M );
1051                         break;
1052                 case 709:
1053                         new_coefficients = sws_getCoefficients( SWS_CS_ITU709 );
1054                         break;
1055                 default:
1056                         new_coefficients = coefficients;
1057                         break;
1058                 }
1059                 sws_setColorspaceDetails( context, new_coefficients, full_range, new_coefficients, full_range,
1060                         brightness, contrast, saturation );
1061         }
1062 }
1063
1064 static mlt_image_format pick_pix_format( enum PixelFormat pix_fmt )
1065 {
1066         switch ( pix_fmt )
1067         {
1068         case PIX_FMT_ARGB:
1069         case PIX_FMT_RGBA:
1070         case PIX_FMT_ABGR:
1071         case PIX_FMT_BGRA:
1072                 return mlt_image_rgb24a;
1073         case PIX_FMT_YUV420P:
1074         case PIX_FMT_YUVJ420P:
1075         case PIX_FMT_YUVA420P:
1076                 return mlt_image_yuv420p;
1077         case PIX_FMT_RGB24:
1078         case PIX_FMT_BGR24:
1079         case PIX_FMT_GRAY8:
1080         case PIX_FMT_MONOWHITE:
1081         case PIX_FMT_MONOBLACK:
1082         case PIX_FMT_RGB8:
1083         case PIX_FMT_BGR8:
1084                 return mlt_image_rgb24;
1085         default:
1086                 return mlt_image_yuv422;
1087         }
1088 }
1089
1090 static mlt_audio_format pick_audio_format( int sample_fmt )
1091 {
1092         switch ( sample_fmt )
1093         {
1094         // interleaved
1095         case AV_SAMPLE_FMT_U8:
1096                 return mlt_audio_u8;
1097         case AV_SAMPLE_FMT_S16:
1098                 return mlt_audio_s16;
1099         case AV_SAMPLE_FMT_S32:
1100                 return mlt_audio_s32le;
1101         case AV_SAMPLE_FMT_FLT:
1102                 return mlt_audio_f32le;
1103         // planar - this producer converts planar to interleaved
1104 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(17<<8)+0)
1105         case AV_SAMPLE_FMT_U8P:
1106                 return mlt_audio_u8;
1107         case AV_SAMPLE_FMT_S16P:
1108                 return mlt_audio_s16;
1109         case AV_SAMPLE_FMT_S32P:
1110                 return mlt_audio_s32le;
1111         case AV_SAMPLE_FMT_FLTP:
1112                 return mlt_audio_f32le;
1113 #endif
1114         default:
1115                 return mlt_audio_none;
1116         }
1117 }
1118
1119 static void convert_image( producer_avformat self, AVFrame *frame, uint8_t *buffer, int pix_fmt,
1120         mlt_image_format *format, int width, int height, uint8_t **alpha )
1121 {
1122         int flags = SWS_BICUBIC | SWS_ACCURATE_RND;
1123
1124 #ifdef USE_MMX
1125         flags |= SWS_CPU_CAPS_MMX;
1126 #endif
1127 #ifdef USE_SSE
1128         flags |= SWS_CPU_CAPS_MMX2;
1129 #endif
1130
1131         // extract alpha from planar formats
1132         if ( ( pix_fmt == PIX_FMT_YUVA420P
1133 #if defined(FFUDIV) && LIBAVUTIL_VERSION_INT >= ((51<<16)+(35<<8)+101)
1134                         || pix_fmt == PIX_FMT_YUVA444P
1135 #endif
1136                         ) &&
1137                 *format != mlt_image_rgb24a && *format != mlt_image_opengl &&
1138                 frame->data[3] && frame->linesize[3] )
1139         {
1140                 int i;
1141                 uint8_t *src, *dst;
1142
1143                 dst = *alpha = mlt_pool_alloc( width * height );
1144                 src = frame->data[3];
1145
1146                 for ( i = 0; i < height; dst += width, src += frame->linesize[3], i++ )
1147                         memcpy( dst, src, FFMIN( width, frame->linesize[3] ) );
1148         }
1149
1150         if ( *format == mlt_image_yuv420p )
1151         {
1152                 struct SwsContext *context = sws_getContext( width, height, pix_fmt,
1153                         width, height, PIX_FMT_YUV420P, flags, NULL, NULL, NULL);
1154                 AVPicture output;
1155                 output.data[0] = buffer;
1156                 output.data[1] = buffer + width * height;
1157                 output.data[2] = buffer + ( 5 * width * height ) / 4;
1158                 output.linesize[0] = width;
1159                 output.linesize[1] = width >> 1;
1160                 output.linesize[2] = width >> 1;
1161                 set_luma_transfer( context, self->colorspace, -1 );
1162                 sws_scale( context, (const uint8_t* const*) frame->data, frame->linesize, 0, height,
1163                         output.data, output.linesize);
1164                 sws_freeContext( context );
1165         }
1166         else if ( *format == mlt_image_rgb24 )
1167         {
1168                 struct SwsContext *context = sws_getContext( width, height, pix_fmt,
1169                         width, height, PIX_FMT_RGB24, flags | SWS_FULL_CHR_H_INT, NULL, NULL, NULL);
1170                 AVPicture output;
1171                 avpicture_fill( &output, buffer, PIX_FMT_RGB24, width, height );
1172                 set_luma_transfer( context, self->colorspace, self->full_luma );
1173                 sws_scale( context, (const uint8_t* const*) frame->data, frame->linesize, 0, height,
1174                         output.data, output.linesize);
1175                 sws_freeContext( context );
1176         }
1177         else if ( *format == mlt_image_rgb24a || *format == mlt_image_opengl )
1178         {
1179                 struct SwsContext *context = sws_getContext( width, height, pix_fmt,
1180                         width, height, PIX_FMT_RGBA, flags | SWS_FULL_CHR_H_INT, NULL, NULL, NULL);
1181                 AVPicture output;
1182                 avpicture_fill( &output, buffer, PIX_FMT_RGBA, width, height );
1183                 set_luma_transfer( context, self->colorspace, self->full_luma );
1184                 sws_scale( context, (const uint8_t* const*) frame->data, frame->linesize, 0, height,
1185                         output.data, output.linesize);
1186                 sws_freeContext( context );
1187         }
1188         else
1189         {
1190                 struct SwsContext *context = sws_getContext( width, height, pix_fmt,
1191                         width, height, PIX_FMT_YUYV422, flags | SWS_FULL_CHR_H_INP, NULL, NULL, NULL);
1192                 AVPicture output;
1193                 avpicture_fill( &output, buffer, PIX_FMT_YUYV422, width, height );
1194                 set_luma_transfer( context, self->colorspace, -1 );
1195                 sws_scale( context, (const uint8_t* const*) frame->data, frame->linesize, 0, height,
1196                         output.data, output.linesize);
1197                 sws_freeContext( context );
1198         }
1199 }
1200
1201 /** Allocate the image buffer and set it on the frame.
1202 */
1203
1204 static int allocate_buffer( mlt_frame frame, AVCodecContext *codec_context, uint8_t **buffer, mlt_image_format *format, int *width, int *height )
1205 {
1206         int size = 0;
1207
1208         if ( codec_context->width == 0 || codec_context->height == 0 )
1209                 return size;
1210
1211         if ( *format == mlt_image_glsl )
1212                 *format = pick_pix_format( codec_context->pix_fmt );
1213
1214         *width = codec_context->width;
1215         *height = codec_context->height;
1216         size = mlt_image_format_size( *format, *width, *height, NULL );
1217         *buffer = mlt_pool_alloc( size );
1218         if ( *buffer )
1219                 mlt_frame_set_image( frame, *buffer, size, mlt_pool_release );
1220         else
1221                 size = 0;
1222
1223         return size;
1224 }
1225
1226 /** Get an image from a frame.
1227 */
1228
1229 static int producer_get_image( mlt_frame frame, uint8_t **buffer, mlt_image_format *format, int *width, int *height, int writable )
1230 {
1231         // Get the producer
1232         producer_avformat self = mlt_frame_pop_service( frame );
1233         mlt_producer producer = self->parent;
1234
1235         // Get the properties from the frame
1236         mlt_properties frame_properties = MLT_FRAME_PROPERTIES( frame );
1237
1238         // Obtain the frame number of this frame
1239         mlt_position position = mlt_frame_original_position( frame );
1240
1241         // Get the producer properties
1242         mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
1243
1244         pthread_mutex_lock( &self->video_mutex );
1245
1246         uint8_t *alpha = NULL;
1247         int got_picture = 0;
1248         int image_size = 0;
1249
1250         // Fetch the video format context
1251         AVFormatContext *context = self->video_format;
1252         if ( !context )
1253                 goto exit_get_image;
1254
1255         // Get the video stream
1256         AVStream *stream = context->streams[ self->video_index ];
1257
1258         // Get codec context
1259         AVCodecContext *codec_context = stream->codec;
1260
1261         // Get the image cache
1262         if ( ! self->image_cache )
1263         {
1264                 // if cache size supplied by environment variable
1265                 int cache_supplied = getenv( "MLT_AVFORMAT_CACHE" ) != NULL;
1266                 int cache_size = cache_supplied? atoi( getenv( "MLT_AVFORMAT_CACHE" ) ) : 0;
1267
1268                 // cache size supplied via property
1269                 if ( mlt_properties_get( properties, "cache" ) )
1270                 {
1271                         cache_supplied = 1;
1272                         cache_size = mlt_properties_get_int( properties, "cache" );
1273                 }
1274                 if ( mlt_properties_get_int( properties, "noimagecache" ) )
1275                         cache_size = 0;
1276                 // create cache if not disabled
1277                 if ( !cache_supplied || cache_size > 0 )
1278                         self->image_cache = mlt_cache_init();
1279                 // set cache size if supplied
1280                 if ( self->image_cache && cache_supplied )
1281                         mlt_cache_set_size( self->image_cache, cache_size );
1282         }
1283         if ( self->image_cache )
1284         {
1285                 mlt_frame original = mlt_cache_get_frame( self->image_cache, position );
1286                 if ( original )
1287                 {
1288                         mlt_properties orig_props = MLT_FRAME_PROPERTIES( original );
1289                         int size = 0;
1290
1291                         *buffer = mlt_properties_get_data( orig_props, "alpha", &size );
1292                         if (*buffer)
1293                                 mlt_frame_set_alpha( frame, *buffer, size, NULL );
1294                         *buffer = mlt_properties_get_data( orig_props, "image", &size );
1295                         mlt_frame_set_image( frame, *buffer, size, NULL );
1296                         mlt_properties_set_data( frame_properties, "avformat.image_cache", original, 0, (mlt_destructor) mlt_frame_close, NULL );
1297                         *format = mlt_properties_get_int( orig_props, "format" );
1298
1299                         // Set the resolution
1300                         *width = codec_context->width;
1301                         *height = codec_context->height;
1302
1303                         // Workaround 1088 encodings missing cropping info.
1304                         if ( *height == 1088 && mlt_profile_dar( mlt_service_profile( MLT_PRODUCER_SERVICE( producer ) ) ) == 16.0/9.0 )
1305                                 *height = 1080;
1306
1307                         got_picture = 1;
1308                         goto exit_get_image;
1309                 }
1310         }
1311         // Cache miss
1312
1313         // We may want to use the source fps if available
1314         double source_fps = mlt_properties_get_double( properties, "meta.media.frame_rate_num" ) /
1315                 mlt_properties_get_double( properties, "meta.media.frame_rate_den" );
1316
1317         // This is the physical frame position in the source
1318         int64_t req_position = ( int64_t )( position / mlt_producer_get_fps( producer ) * source_fps + 0.5 );
1319
1320         // Determines if we have to decode all frames in a sequence
1321         // Temporary hack to improve intra frame only
1322         int must_decode = !( codec_context->codec && codec_context->codec->name ) || (
1323                                   strcmp( codec_context->codec->name, "dnxhd" ) &&
1324                                   strcmp( codec_context->codec->name, "dvvideo" ) &&
1325                                   strcmp( codec_context->codec->name, "huffyuv" ) &&
1326                                   strcmp( codec_context->codec->name, "mjpeg" ) &&
1327                                   strcmp( codec_context->codec->name, "rawvideo" ) );
1328
1329         double delay = mlt_properties_get_double( properties, "video_delay" );
1330
1331         // Seek if necessary
1332         const char *interp = mlt_properties_get( frame_properties, "rescale.interp" );
1333         int preseek = must_decode
1334 #if defined(FFUDIV) && LIBAVFORMAT_VERSION_INT >= ((53<<16)+(24<<8)+2)
1335                 && ( interp && strcmp( interp, "nearest" ) )
1336 #endif
1337                 && codec_context->has_b_frames;
1338         int paused = seek_video( self, position, req_position, preseek );
1339
1340         // Seek might have reopened the file
1341         context = self->video_format;
1342         stream = context->streams[ self->video_index ];
1343         codec_context = stream->codec;
1344         if ( *format == mlt_image_none ||
1345                         codec_context->pix_fmt == PIX_FMT_ARGB ||
1346                         codec_context->pix_fmt == PIX_FMT_RGBA ||
1347                         codec_context->pix_fmt == PIX_FMT_ABGR ||
1348                         codec_context->pix_fmt == PIX_FMT_BGRA )
1349                 *format = pick_pix_format( codec_context->pix_fmt );
1350
1351         // Duplicate the last image if necessary
1352         if ( self->video_frame && self->video_frame->linesize[0]
1353                  && ( paused || self->current_position >= req_position ) )
1354         {
1355                 // Duplicate it
1356                 if ( ( image_size = allocate_buffer( frame, codec_context, buffer, format, width, height ) ) )
1357                 {
1358                         // Workaround 1088 encodings missing cropping info.
1359                         if ( *height == 1088 && mlt_profile_dar( mlt_service_profile( MLT_PRODUCER_SERVICE( producer ) ) ) == 16.0/9.0 )
1360                                 *height = 1080;
1361 #ifdef VDPAU
1362                         if ( self->vdpau && self->vdpau->buffer )
1363                         {
1364                                 AVPicture picture;
1365                                 picture.data[0] = self->vdpau->buffer;
1366                                 picture.data[2] = self->vdpau->buffer + codec_context->width * codec_context->height;
1367                                 picture.data[1] = self->vdpau->buffer + codec_context->width * codec_context->height * 5 / 4;
1368                                 picture.linesize[0] = codec_context->width;
1369                                 picture.linesize[1] = codec_context->width / 2;
1370                                 picture.linesize[2] = codec_context->width / 2;
1371                                 convert_image( self, (AVFrame*) &picture, *buffer,
1372                                         PIX_FMT_YUV420P, format, *width, *height, &alpha );
1373                         }
1374                         else
1375 #endif
1376                         convert_image( self, self->video_frame, *buffer, codec_context->pix_fmt,
1377                                 format, *width, *height, &alpha );
1378                         got_picture = 1;
1379                 }
1380         }
1381         else
1382         {
1383                 int ret = 0;
1384                 int64_t int_position = 0;
1385                 int decode_errors = 0;
1386
1387                 // Construct an AVFrame for YUV422 conversion
1388                 if ( !self->video_frame )
1389                         self->video_frame = avcodec_alloc_frame( );
1390
1391                 while( ret >= 0 && !got_picture )
1392                 {
1393                         // Read a packet
1394                         if ( self->pkt.stream_index == self->video_index )
1395                                 av_free_packet( &self->pkt );
1396                         av_init_packet( &self->pkt );
1397                         pthread_mutex_lock( &self->packets_mutex );
1398                         if ( mlt_deque_count( self->vpackets ) )
1399                         {
1400                                 AVPacket *tmp = (AVPacket*) mlt_deque_pop_front( self->vpackets );
1401                                 self->pkt = *tmp;
1402                                 free( tmp );
1403                         }
1404                         else
1405                         {
1406                                 ret = av_read_frame( context, &self->pkt );
1407                                 if ( ret >= 0 && !self->seekable && self->pkt.stream_index == self->audio_index )
1408                                 {
1409                                         if ( !av_dup_packet( &self->pkt ) )
1410                                         {
1411                                                 AVPacket *tmp = malloc( sizeof(AVPacket) );
1412                                                 *tmp = self->pkt;
1413                                                 mlt_deque_push_back( self->apackets, tmp );
1414                                         }
1415                                 }
1416                                 else if ( ret < 0 )
1417                                 {
1418                                         mlt_log_verbose( MLT_PRODUCER_SERVICE(producer), "av_read_frame returned error %d inside get_image\n", ret );
1419                                         if ( !self->seekable && mlt_properties_get_int( properties, "reconnect" ) )
1420                                         {
1421                                                 // Try to reconnect to live sources by closing context and codecs,
1422                                                 // and letting next call to get_frame() reopen.
1423                                                 prepare_reopen( self );
1424                                                 pthread_mutex_unlock( &self->packets_mutex );
1425                                                 goto exit_get_image;
1426                                         }
1427                                         if ( !self->seekable && mlt_properties_get_int( properties, "exit_on_disconnect" ) )
1428                                         {
1429                                                 mlt_log_fatal( MLT_PRODUCER_SERVICE(producer), "Exiting with error due to disconnected source.\n" );
1430                                                 exit( EXIT_FAILURE );
1431                                         }
1432                                 }
1433                         }
1434                         pthread_mutex_unlock( &self->packets_mutex );
1435
1436                         // We only deal with video from the selected video_index
1437                         if ( ret >= 0 && self->pkt.stream_index == self->video_index && self->pkt.size > 0 )
1438                         {
1439                                 int64_t pts = best_pts( self, self->pkt.pts, self->pkt.dts );
1440                                 if ( pts != AV_NOPTS_VALUE )
1441                                 {
1442                                         if ( !self->seekable && self->first_pts == AV_NOPTS_VALUE )
1443                                                 self->first_pts = pts;
1444                                         if ( self->first_pts != AV_NOPTS_VALUE )
1445                                                 pts -= self->first_pts;
1446                                         else if ( context->start_time != AV_NOPTS_VALUE )
1447                                                 pts -= context->start_time;
1448                                         int_position = ( int64_t )( ( av_q2d( self->video_time_base ) * pts + delay ) * source_fps + 0.5 );
1449                                         if ( int_position == self->last_position )
1450                                                 int_position = self->last_position + 1;
1451                                 }
1452                                 mlt_log_debug( MLT_PRODUCER_SERVICE(producer),
1453                                         "V pkt.pts %"PRId64" pkt.dts %"PRId64" req_pos %"PRId64" cur_pos %"PRId64" pkt_pos %"PRId64"\n",
1454                                         self->pkt.pts, self->pkt.dts, req_position, self->current_position, int_position );
1455
1456                                 // Make a dumb assumption on streams that contain wild timestamps
1457                                 if ( abs( req_position - int_position ) > 999 )
1458                                 {
1459                                         int_position = req_position;
1460                                         mlt_log_warning( MLT_PRODUCER_SERVICE(producer), " WILD TIMESTAMP!\n" );
1461                                 }
1462                                 self->last_position = int_position;
1463
1464                                 // Decode the image
1465                                 if ( must_decode || int_position >= req_position )
1466                                 {
1467 #ifdef VDPAU
1468                                         if ( self->vdpau )
1469                                         {
1470                                                 if ( self->vdpau->decoder == VDP_INVALID_HANDLE )
1471                                                 {
1472                                                         vdpau_decoder_init( self );
1473                                                 }
1474                                                 self->vdpau->is_decoded = 0;
1475                                         }
1476 #endif
1477                                         codec_context->reordered_opaque = int_position;
1478                                         if ( int_position >= req_position )
1479                                                 codec_context->skip_loop_filter = AVDISCARD_NONE;
1480 #if (LIBAVCODEC_VERSION_INT >= ((52<<16)+(26<<8)+0))
1481                                         ret = avcodec_decode_video2( codec_context, self->video_frame, &got_picture, &self->pkt );
1482 #else
1483                                         ret = avcodec_decode_video( codec_context, self->video_frame, &got_picture, self->pkt.data, self->pkt.size );
1484 #endif
1485                                         // Note: decode may fail at the beginning of MPEGfile (B-frames referencing before first I-frame), so allow a few errors.
1486                                         if ( ret < 0 )
1487                                         {
1488                                                 if ( ++decode_errors <= 10 )
1489                                                         ret = 0;
1490                                                 else
1491                                                         mlt_log_warning( MLT_PRODUCER_SERVICE(producer), "video decoding error %d\n", ret );
1492                                         }
1493                                         else
1494                                         {
1495                                                 decode_errors = 0;
1496                                         }
1497                                 }
1498
1499                                 if ( got_picture )
1500                                 {
1501                                         // Get position of reordered frame
1502                                         int_position = self->video_frame->reordered_opaque;
1503 #if (LIBAVCODEC_VERSION_INT >= ((52<<16)+(106<<8)+0))
1504                                         pts = best_pts( self, self->video_frame->pkt_pts, self->video_frame->pkt_dts );
1505                                         if ( pts != AV_NOPTS_VALUE )
1506                                         {
1507                                                 if ( self->first_pts != AV_NOPTS_VALUE )
1508                                                         pts -= self->first_pts;
1509                                                 else if ( context->start_time != AV_NOPTS_VALUE )
1510                                                         pts -= context->start_time;
1511                                                 int_position = ( int64_t )( ( av_q2d( self->video_time_base ) * pts + delay ) * source_fps + 0.5 );
1512                                         }
1513 #endif
1514
1515                                         if ( int_position < req_position )
1516                                                 got_picture = 0;
1517                                         else if ( int_position >= req_position )
1518                                                 codec_context->skip_loop_filter = AVDISCARD_NONE;
1519                                 }
1520                                 mlt_log_debug( MLT_PRODUCER_SERVICE(producer), " got_pic %d key %d\n", got_picture, self->pkt.flags & PKT_FLAG_KEY );
1521                         }
1522
1523                         // Now handle the picture if we have one
1524                         if ( got_picture )
1525                         {
1526                                 if ( ( image_size = allocate_buffer( frame, codec_context, buffer, format, width, height ) ) )
1527                                 {
1528                                         // Workaround 1088 encodings missing cropping info.
1529                                         if ( *height == 1088 && mlt_profile_dar( mlt_service_profile( MLT_PRODUCER_SERVICE( producer ) ) ) == 16.0/9.0 )
1530                                                 *height = 1080;
1531 #ifdef VDPAU
1532                                         if ( self->vdpau )
1533                                         {
1534                                                 if ( self->vdpau->is_decoded )
1535                                                 {
1536                                                         struct vdpau_render_state *render = (struct vdpau_render_state*) self->video_frame->data[0];
1537                                                         void *planes[3];
1538                                                         uint32_t pitches[3];
1539                                                         VdpYCbCrFormat dest_format = VDP_YCBCR_FORMAT_YV12;
1540
1541                                                         if ( !self->vdpau->buffer )
1542                                                                 self->vdpau->buffer = mlt_pool_alloc( codec_context->width * codec_context->height * 3 / 2 );
1543                                                         self->video_frame->data[0] = planes[0] = self->vdpau->buffer;
1544                                                         self->video_frame->data[2] = planes[1] = self->vdpau->buffer + codec_context->width * codec_context->height;
1545                                                         self->video_frame->data[1] = planes[2] = self->vdpau->buffer + codec_context->width * codec_context->height * 5 / 4;
1546                                                         self->video_frame->linesize[0] = pitches[0] = codec_context->width;
1547                                                         self->video_frame->linesize[1] = pitches[1] = codec_context->width / 2;
1548                                                         self->video_frame->linesize[2] = pitches[2] = codec_context->width / 2;
1549
1550                                                         VdpStatus status = vdp_surface_get_bits( render->surface, dest_format, planes, pitches );
1551                                                         if ( status == VDP_STATUS_OK )
1552                                                         {
1553                                                                 convert_image( self, self->video_frame, *buffer, PIX_FMT_YUV420P,
1554                                                                         format, *width, *height, &alpha );
1555                                                         }
1556                                                         else
1557                                                         {
1558                                                                 mlt_log_error( MLT_PRODUCER_SERVICE(producer), "VDPAU Error: %s\n", vdp_get_error_string( status ) );
1559                                                                 image_size = self->vdpau->is_decoded = 0;
1560                                                         }
1561                                                 }
1562                                                 else
1563                                                 {
1564                                                         mlt_log_error( MLT_PRODUCER_SERVICE(producer), "VDPAU error in VdpDecoderRender\n" );
1565                                                         image_size = got_picture = 0;
1566                                                 }
1567                                         }
1568                                         else
1569 #endif
1570                                         convert_image( self, self->video_frame, *buffer, codec_context->pix_fmt,
1571                                                 format, *width, *height, &alpha );
1572                                         self->top_field_first |= self->video_frame->top_field_first;
1573                                         self->current_position = int_position;
1574                                 }
1575                                 else
1576                                 {
1577                                         got_picture = 0;
1578                                 }
1579                         }
1580
1581                         // Free packet data if not video and not live audio packet
1582                         if ( self->pkt.stream_index != self->video_index &&
1583                                  !( !self->seekable && self->pkt.stream_index == self->audio_index ) )
1584                                 av_free_packet( &self->pkt );
1585                 }
1586         }
1587
1588         // set alpha
1589         if ( alpha )
1590                 mlt_frame_set_alpha( frame, alpha, (*width) * (*height), mlt_pool_release );
1591
1592         if ( image_size > 0 && self->image_cache )
1593         {
1594                 mlt_properties_set_int( frame_properties, "format", *format );
1595                 mlt_cache_put_frame( self->image_cache, frame );
1596         }
1597
1598         // Try to duplicate last image if there was a decoding failure
1599         // TODO: with multithread decoding a partial frame decoding resulting
1600         // in failure also resets av_frame making test below fail.
1601         if ( !image_size && self->video_frame && self->video_frame->linesize[0] )
1602         {
1603                 // Duplicate it
1604                 if ( ( image_size = allocate_buffer( frame, codec_context, buffer, format, width, height ) ) )
1605                 {
1606                         // Workaround 1088 encodings missing cropping info.
1607                         if ( *height == 1088 && mlt_profile_dar( mlt_service_profile( MLT_PRODUCER_SERVICE( producer ) ) ) == 16.0/9.0 )
1608                                 *height = 1080;
1609 #ifdef VDPAU
1610                         if ( self->vdpau && self->vdpau->buffer )
1611                         {
1612                                 AVPicture picture;
1613                                 picture.data[0] = self->vdpau->buffer;
1614                                 picture.data[2] = self->vdpau->buffer + codec_context->width * codec_context->height;
1615                                 picture.data[1] = self->vdpau->buffer + codec_context->width * codec_context->height * 5 / 4;
1616                                 picture.linesize[0] = codec_context->width;
1617                                 picture.linesize[1] = codec_context->width / 2;
1618                                 picture.linesize[2] = codec_context->width / 2;
1619                                 convert_image( self, (AVFrame*) &picture, *buffer,
1620                                         PIX_FMT_YUV420P, format, *width, *height, &alpha );
1621                         }
1622                         else
1623 #endif
1624                         convert_image( self, self->video_frame, *buffer, codec_context->pix_fmt,
1625                                 format, *width, *height, &alpha );
1626                         got_picture = 1;
1627                 }
1628         }
1629
1630         // Regardless of speed, we expect to get the next frame (cos we ain't too bright)
1631         self->video_expected = position + 1;
1632
1633 exit_get_image:
1634
1635         pthread_mutex_unlock( &self->video_mutex );
1636
1637         // Set the progressive flag
1638         if ( mlt_properties_get( properties, "force_progressive" ) )
1639                 mlt_properties_set_int( frame_properties, "progressive", !!mlt_properties_get_int( properties, "force_progressive" ) );
1640         else if ( self->video_frame )
1641                 mlt_properties_set_int( frame_properties, "progressive", !self->video_frame->interlaced_frame );
1642
1643         // Set the field order property for this frame
1644         if ( mlt_properties_get( properties, "force_tff" ) )
1645                 mlt_properties_set_int( frame_properties, "top_field_first", !!mlt_properties_get_int( properties, "force_tff" ) );
1646         else
1647                 mlt_properties_set_int( frame_properties, "top_field_first", self->top_field_first );
1648
1649         // Set immutable properties of the selected track's (or overridden) source attributes.
1650         mlt_service_lock( MLT_PRODUCER_SERVICE( producer ) );
1651         mlt_properties_set_int( properties, "meta.media.top_field_first", self->top_field_first );
1652         mlt_properties_set_int( properties, "meta.media.progressive", mlt_properties_get_int( frame_properties, "progressive" ) );
1653         mlt_service_unlock( MLT_PRODUCER_SERVICE( producer ) );
1654
1655         // If we already have RGB, then the full range processing either happened already
1656         // or does not apply (RGB source).
1657         if ( *format == mlt_image_rgb24 || *format == mlt_image_rgb24a || *format == mlt_image_opengl )
1658                 mlt_properties_set( frame_properties, "force_full_luma", NULL );
1659
1660         return !got_picture;
1661 }
1662
1663 /** Process properties as AVOptions and apply to AV context obj
1664 */
1665
1666 static void apply_properties( void *obj, mlt_properties properties, int flags )
1667 {
1668         int i;
1669         int count = mlt_properties_count( properties );
1670         for ( i = 0; i < count; i++ )
1671         {
1672                 const char *opt_name = mlt_properties_get_name( properties, i );
1673 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(10<<8)+0)
1674                 const AVOption *opt = av_opt_find( obj, opt_name, NULL, flags, flags );
1675 #else
1676                 const AVOption *opt = av_find_opt( obj, opt_name, NULL, flags, flags );
1677 #endif
1678                 if ( opt_name && mlt_properties_get( properties, opt_name ) )
1679                 {
1680                         if ( opt )
1681 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(12<<8)+0)
1682                                 av_opt_set( obj, opt_name, mlt_properties_get( properties, opt_name), 0 );
1683 #elif LIBAVCODEC_VERSION_INT >= ((52<<16)+(7<<8)+0)
1684                                 av_set_string3( obj, opt_name, mlt_properties_get( properties, opt_name), 0, NULL );
1685 #elif LIBAVCODEC_VERSION_INT >= ((51<<16)+(59<<8)+0)
1686                                 av_set_string2( obj, opt_name, mlt_properties_get( properties, opt_name), 0 );
1687 #else
1688                                 av_set_string( obj, opt_name, mlt_properties_get( properties, opt_name) );
1689 #endif
1690                 }
1691         }
1692 }
1693
1694 /** Initialize the video codec context.
1695  */
1696
1697 static int video_codec_init( producer_avformat self, int index, mlt_properties properties )
1698 {
1699         // Initialise the codec if necessary
1700         if ( !self->video_codec )
1701         {
1702                 // Get the video stream
1703                 AVStream *stream = self->video_format->streams[ index ];
1704
1705                 // Get codec context
1706                 AVCodecContext *codec_context = stream->codec;
1707
1708                 // Find the codec
1709                 AVCodec *codec = avcodec_find_decoder( codec_context->codec_id );
1710 #ifdef VDPAU
1711                 if ( codec_context->codec_id == AV_CODEC_ID_H264 )
1712                 {
1713                         if ( ( codec = avcodec_find_decoder_by_name( "h264_vdpau" ) ) )
1714                         {
1715                                 if ( vdpau_init( self ) )
1716                                 {
1717                                         self->video_codec = codec_context;
1718                                         if ( !vdpau_decoder_init( self ) )
1719                                                 vdpau_fini( self );
1720                                 }
1721                         }
1722                         if ( !self->vdpau )
1723                                 codec = avcodec_find_decoder( codec_context->codec_id );
1724                 }
1725 #endif
1726
1727                 // Initialise multi-threading
1728                 int thread_count = mlt_properties_get_int( properties, "threads" );
1729                 if ( thread_count == 0 && getenv( "MLT_AVFORMAT_THREADS" ) )
1730                         thread_count = atoi( getenv( "MLT_AVFORMAT_THREADS" ) );
1731                 if ( thread_count > 1 )
1732                         codec_context->thread_count = thread_count;
1733
1734                 // If we don't have a codec and we can't initialise it, we can't do much more...
1735                 pthread_mutex_lock( &self->open_mutex );
1736 #if LIBAVCODEC_VERSION_INT >= ((53<<16)+(8<<8)+0)
1737                 if ( codec && avcodec_open2( codec_context, codec, NULL ) >= 0 )
1738 #else
1739                 if ( codec && avcodec_open( codec_context, codec ) >= 0 )
1740 #endif
1741                 {
1742                         // Now store the codec with its destructor
1743                         self->video_codec = codec_context;
1744                 }
1745                 else
1746                 {
1747                         // Remember that we can't use this later
1748                         self->video_index = -1;
1749                         pthread_mutex_unlock( &self->open_mutex );
1750                         return 0;
1751                 }
1752                 pthread_mutex_unlock( &self->open_mutex );
1753
1754                 // Process properties as AVOptions
1755                 apply_properties( codec_context, properties, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM );
1756 #if LIBAVCODEC_VERSION_INT >= ((52<<16)+(122<<8)+0)
1757                 if ( codec->priv_class && codec_context->priv_data )
1758                         apply_properties( codec_context->priv_data, properties, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM );
1759 #endif
1760
1761                 // Reset some image properties
1762                 if ( self->video_codec )
1763                 {
1764                         mlt_properties_set_int( properties, "width", self->video_codec->width );
1765                         mlt_properties_set_int( properties, "height", self->video_codec->height );
1766                         get_aspect_ratio( properties, stream, self->video_codec );
1767                 }
1768
1769                 // Start with the muxer frame rate.
1770 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(42<<8)+0)
1771                 AVRational frame_rate = stream->avg_frame_rate;
1772 #else
1773                 AVRational frame_rate = stream->r_frame_rate;
1774 #endif
1775                 double fps = av_q2d( frame_rate );
1776
1777 #if LIBAVFORMAT_VERSION_MAJOR < 55
1778                 // Verify and sanitize the muxer frame rate.
1779                 if ( isnan( fps ) || isinf( fps ) || fps == 0 )
1780                 {
1781                         frame_rate = stream->r_frame_rate;
1782                         fps = av_q2d( frame_rate );
1783                 }
1784 #endif
1785 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(42<<8)+0) && LIBAVFORMAT_VERSION_MAJOR < 55
1786                 // With my samples when r_frame_rate != 1000 but avg_frame_rate is valid,
1787                 // avg_frame_rate gives some approximate value that does not well match the media.
1788                 // Also, on my sample where r_frame_rate = 1000, using avg_frame_rate directly
1789                 // results in some very choppy output, but some value slightly different works
1790                 // great.
1791                 if ( av_q2d( stream->r_frame_rate ) >= 1000 && av_q2d( stream->avg_frame_rate ) > 0 )
1792                 {
1793                         frame_rate = av_d2q( av_q2d( stream->avg_frame_rate ), 1024 );
1794                         fps = av_q2d( frame_rate );
1795                 }
1796 #endif
1797                 // XXX frame rates less than 1 fps are not considered sane
1798                 if ( isnan( fps ) || isinf( fps ) || fps < 1.0 )
1799                 {
1800                         // Get the frame rate from the codec.
1801                         frame_rate.num = self->video_codec->time_base.den;
1802                         frame_rate.den = self->video_codec->time_base.num * self->video_codec->ticks_per_frame;
1803                         fps = av_q2d( frame_rate );
1804                 }
1805                 if ( isnan( fps ) || isinf( fps ) || fps < 1.0 )
1806                 {
1807                         // Use the profile frame rate if all else fails.
1808                         mlt_profile profile = mlt_service_profile( MLT_PRODUCER_SERVICE( self->parent ) );
1809                         frame_rate.num = profile->frame_rate_num;
1810                         frame_rate.den = profile->frame_rate_den;
1811                 }
1812
1813                 self->video_time_base = stream->time_base;
1814                 if ( mlt_properties_get( properties, "force_fps" ) )
1815                 {
1816                         AVRational force_fps = av_d2q( mlt_properties_get_double( properties, "force_fps" ), 1024 );
1817                         self->video_time_base = av_mul_q( stream->time_base, av_div_q( frame_rate, force_fps ) );
1818                         frame_rate = force_fps;
1819                 }
1820                 mlt_properties_set_int( properties, "meta.media.frame_rate_num", frame_rate.num );
1821                 mlt_properties_set_int( properties, "meta.media.frame_rate_den", frame_rate.den );
1822
1823                 // Set the YUV colorspace from override or detect
1824                 self->colorspace = mlt_properties_get_int( properties, "force_colorspace" );
1825 #if LIBAVCODEC_VERSION_INT > ((52<<16)+(28<<8)+0)
1826                 if ( ! self->colorspace )
1827                 {
1828                         switch ( self->video_codec->colorspace )
1829                         {
1830                         case AVCOL_SPC_SMPTE240M:
1831                                 self->colorspace = 240;
1832                                 break;
1833                         case AVCOL_SPC_BT470BG:
1834                         case AVCOL_SPC_SMPTE170M:
1835                                 self->colorspace = 601;
1836                                 break;
1837                         case AVCOL_SPC_BT709:
1838                                 self->colorspace = 709;
1839                                 break;
1840                         default:
1841                                 // This is a heuristic Charles Poynton suggests in "Digital Video and HDTV"
1842                                 self->colorspace = self->video_codec->width * self->video_codec->height > 750000 ? 709 : 601;
1843                                 break;
1844                         }
1845                 }
1846 #endif
1847                 // Let apps get chosen colorspace
1848                 mlt_properties_set_int( properties, "meta.media.colorspace", self->colorspace );
1849
1850                 self->full_luma = -1;
1851 #if LIBAVCODEC_VERSION_INT >= ((52<<16)+(72<<8)+2)
1852                 mlt_log_debug( MLT_PRODUCER_SERVICE(self->parent), "color_range %d\n", codec_context->color_range );
1853                 if ( codec_context->color_range == AVCOL_RANGE_JPEG )
1854                         self->full_luma = 1;
1855 #endif
1856                 if ( mlt_properties_get( properties, "set.force_full_luma" ) )
1857                         self->full_luma = mlt_properties_get_int( properties, "set.force_full_luma" );
1858         }
1859         return self->video_codec && self->video_index > -1;
1860 }
1861
1862 /** Set up video handling.
1863 */
1864
1865 static void producer_set_up_video( producer_avformat self, mlt_frame frame )
1866 {
1867         // Get the producer
1868         mlt_producer producer = self->parent;
1869
1870         // Get the properties
1871         mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
1872
1873         // Fetch the video format context
1874         AVFormatContext *context = self->video_format;
1875
1876         // Get the video_index
1877         int index = mlt_properties_get_int( properties, "video_index" );
1878
1879         int unlock_needed = 0;
1880
1881         // Reopen the file if necessary
1882         if ( !context && index > -1 )
1883         {
1884                 unlock_needed = 1;
1885                 pthread_mutex_lock( &self->video_mutex );
1886                 producer_open( self, mlt_service_profile( MLT_PRODUCER_SERVICE(producer) ),
1887                         mlt_properties_get( properties, "resource" ), 0 );
1888                 context = self->video_format;
1889         }
1890
1891         // Exception handling for video_index
1892         if ( context && index >= (int) context->nb_streams )
1893         {
1894                 // Get the last video stream
1895                 for ( index = context->nb_streams - 1;
1896                           index >= 0 && context->streams[ index ]->codec->codec_type != CODEC_TYPE_VIDEO;
1897                           index-- );
1898                 mlt_properties_set_int( properties, "video_index", index );
1899         }
1900         if ( context && index > -1 && context->streams[ index ]->codec->codec_type != CODEC_TYPE_VIDEO )
1901         {
1902                 // Invalidate the video stream
1903                 index = -1;
1904                 mlt_properties_set_int( properties, "video_index", index );
1905         }
1906
1907         // Update the video properties if the index changed
1908         if ( index != self->video_index )
1909         {
1910                 // Reset the video properties if the index changed
1911                 self->video_index = index;
1912                 pthread_mutex_lock( &self->open_mutex );
1913                 if ( self->video_codec )
1914                         avcodec_close( self->video_codec );
1915                 self->video_codec = NULL;
1916                 pthread_mutex_unlock( &self->open_mutex );
1917         }
1918
1919         // Get the frame properties
1920         mlt_properties frame_properties = MLT_FRAME_PROPERTIES( frame );
1921
1922         // Get the codec
1923         if ( context && index > -1 && video_codec_init( self, index, properties ) )
1924         {
1925                 // Set the frame properties
1926                 double force_aspect_ratio = mlt_properties_get_double( properties, "force_aspect_ratio" );
1927                 double aspect_ratio = ( force_aspect_ratio > 0.0 ) ?
1928                         force_aspect_ratio : mlt_properties_get_double( properties, "aspect_ratio" );
1929
1930                 // Set the width and height
1931                 mlt_properties_set_int( frame_properties, "width", self->video_codec->width );
1932                 mlt_properties_set_int( frame_properties, "height", self->video_codec->height );
1933                 mlt_properties_set_int( properties, "meta.media.width", self->video_codec->width );
1934                 mlt_properties_set_int( properties, "meta.media.height", self->video_codec->height );
1935                 mlt_properties_set_double( frame_properties, "aspect_ratio", aspect_ratio );
1936                 mlt_properties_set_int( frame_properties, "colorspace", self->colorspace );
1937
1938                 // Workaround 1088 encodings missing cropping info.
1939                 if ( self->video_codec->height == 1088 && mlt_profile_dar( mlt_service_profile( MLT_PRODUCER_SERVICE( producer ) ) ) == 16.0/9.0 )
1940                 {
1941                         mlt_properties_set_int( properties, "meta.media.height", 1080 );
1942                 }
1943
1944                 // Add our image operation
1945                 mlt_frame_push_service( frame, self );
1946                 mlt_frame_push_get_image( frame, producer_get_image );
1947         }
1948         else
1949         {
1950                 // If something failed, use test card image
1951                 mlt_properties_set_int( frame_properties, "test_image", 1 );
1952         }
1953         if ( unlock_needed )
1954                 pthread_mutex_unlock( &self->video_mutex );
1955 }
1956
1957 static int seek_audio( producer_avformat self, mlt_position position, double timecode )
1958 {
1959         int paused = 0;
1960
1961         // Seek if necessary
1962         if ( self->seekable && ( position != self->audio_expected || self->last_position < 0 ) )
1963         {
1964                 if ( self->last_position == POSITION_INITIAL )
1965                 {
1966                         int video_index = self->video_index;
1967                         if ( video_index == -1 )
1968                                 video_index = first_video_index( self );
1969                         if ( video_index >= 0 )
1970                                 find_first_pts( self, video_index );
1971                 }
1972
1973                 if ( position + 1 == self->audio_expected )
1974                 {
1975                         // We're paused - silence required
1976                         paused = 1;
1977                 }
1978                 else if ( position < self->audio_expected || position - self->audio_expected >= 12 )
1979                 {
1980                         AVFormatContext *context = self->audio_format;
1981                         int64_t timestamp = ( int64_t )( timecode * AV_TIME_BASE + 0.5 );
1982                         if ( context->start_time != AV_NOPTS_VALUE )
1983                                 timestamp += context->start_time;
1984                         if ( timestamp < 0 )
1985                                 timestamp = 0;
1986
1987                         // Set to the real timecode
1988                         if ( av_seek_frame( context, -1, timestamp, AVSEEK_FLAG_BACKWARD ) != 0 )
1989                                 paused = 1;
1990
1991                         // Clear the usage in the audio buffer
1992                         int i = MAX_AUDIO_STREAMS + 1;
1993                         while ( --i )
1994                                 self->audio_used[i - 1] = 0;
1995                 }
1996         }
1997         return paused;
1998 }
1999
2000 static int sample_bytes( AVCodecContext *context )
2001 {
2002 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(8<<8)+0)
2003         return av_get_bytes_per_sample( context->sample_fmt );
2004 #elif LIBAVCODEC_VERSION_MAJOR >= 53
2005         return av_get_bits_per_sample_fmt( context->sample_fmt ) / 8;
2006 #else
2007         return av_get_bits_per_sample_format( context->sample_fmt ) / 8;
2008 #endif
2009 }
2010
2011 #if LIBAVCODEC_VERSION_MAJOR >= 55
2012 static void planar_to_interleaved( uint8_t *dest, AVFrame *src, int samples, int channels, int bytes_per_sample )
2013 {
2014         int s, c;
2015         for ( s = 0; s < samples; s++ )
2016         {
2017                 for ( c = 0; c < channels; c++ )
2018                 {
2019                         memcpy( dest, &src->data[c][s * bytes_per_sample], bytes_per_sample );
2020                         dest += bytes_per_sample;
2021                 }
2022         }
2023 }
2024 #else
2025 static void planar_to_interleaved( uint8_t *dest, uint8_t *src, int samples, int channels, int bytes_per_sample )
2026 {
2027         int s, c;
2028         for ( s = 0; s < samples; s++ )
2029         {
2030                 for ( c = 0; c < channels; c++ )
2031                 {
2032                         memcpy( dest, src + ( c * samples + s ) * bytes_per_sample, bytes_per_sample );
2033                         dest += bytes_per_sample;
2034                 }
2035         }
2036 }
2037 #endif
2038
2039 static int decode_audio( producer_avformat self, int *ignore, AVPacket pkt, int channels, int samples, double timecode, double fps )
2040 {
2041         // Fetch the audio_format
2042         AVFormatContext *context = self->audio_format;
2043
2044         // Get the current stream index
2045         int index = pkt.stream_index;
2046
2047         // Get codec context
2048         AVCodecContext *codec_context = self->audio_codec[ index ];
2049
2050         // Obtain the audio buffers
2051         uint8_t *audio_buffer = self->audio_buffer[ index ];
2052         uint8_t *decode_buffer = self->decode_buffer[ index ];
2053
2054         int audio_used = self->audio_used[ index ];
2055         uint8_t *ptr = pkt.data;
2056         int len = pkt.size;
2057         int ret = 0;
2058
2059         while ( ptr && ret >= 0 && len > 0 )
2060         {
2061                 int sizeof_sample = sample_bytes( codec_context );
2062                 int data_size = self->audio_buffer_size[ index ];
2063
2064                 // Decode the audio
2065 #if LIBAVCODEC_VERSION_MAJOR >= 55
2066                 if ( !self->audio_frame )
2067                         self->audio_frame = avcodec_alloc_frame();
2068                 else
2069                         avcodec_get_frame_defaults( self->audio_frame );
2070                 ret = avcodec_decode_audio4( codec_context, self->audio_frame, &data_size, &pkt );
2071                 if ( data_size ) {
2072                         data_size = av_samples_get_buffer_size( NULL, codec_context->channels,
2073                                 self->audio_frame->nb_samples, codec_context->sample_fmt, 1 );
2074                         decode_buffer = self->audio_frame->data[0];
2075                 }
2076 #else
2077                 ret = avcodec_decode_audio3( codec_context, (int16_t*) decode_buffer, &data_size, &pkt );
2078 #endif
2079                 if ( ret < 0 )
2080                 {
2081                         mlt_log_warning( MLT_PRODUCER_SERVICE(self->parent), "audio decoding error %d\n", ret );
2082                         break;
2083                 }
2084
2085                 pkt.size = len -= ret;
2086                 pkt.data = ptr += ret;
2087
2088                 // If decoded successfully
2089                 if ( data_size > 0 )
2090                 {
2091                         // Figure out how many samples will be needed after resampling
2092                         int convert_samples = data_size / codec_context->channels / sample_bytes( codec_context );
2093
2094                         // Resize audio buffer to prevent overflow
2095                         if ( ( audio_used + convert_samples ) * channels * sizeof_sample > self->audio_buffer_size[ index ] )
2096                         {
2097                                 self->audio_buffer_size[ index ] = ( audio_used + convert_samples * 2 ) * channels * sizeof_sample;
2098                                 audio_buffer = self->audio_buffer[ index ] = mlt_pool_realloc( audio_buffer, self->audio_buffer_size[ index ] );
2099                         }
2100                         uint8_t *dest = &audio_buffer[ audio_used * codec_context->channels * sizeof_sample ];
2101                         switch ( codec_context->sample_fmt )
2102                         {
2103 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(17<<8)+0)
2104                         case AV_SAMPLE_FMT_U8P:
2105                         case AV_SAMPLE_FMT_S16P:
2106                         case AV_SAMPLE_FMT_S32P:
2107                         case AV_SAMPLE_FMT_FLTP:
2108 #if LIBAVCODEC_VERSION_MAJOR >= 55
2109                                 planar_to_interleaved( dest, self->audio_frame, convert_samples, codec_context->channels, sizeof_sample );
2110 #else
2111                                 planar_to_interleaved( dest, decode_buffer, convert_samples, codec_context->channels, sizeof_sample );
2112 #endif
2113                                 break;
2114 #endif
2115                         default:
2116                                 // Straight copy to audio buffer
2117                                 memcpy( dest, decode_buffer, data_size );
2118                         }
2119                         audio_used += convert_samples;
2120
2121                         // Handle ignore
2122                         while ( *ignore && audio_used )
2123                         {
2124                                 *ignore -= 1;
2125                                 audio_used -= audio_used > samples ? samples : audio_used;
2126                                 memmove( audio_buffer, &audio_buffer[ samples * codec_context->channels * sizeof_sample ],
2127                                                  audio_used * sizeof_sample );
2128                         }
2129                 }
2130         }
2131
2132         // If we're behind, ignore this packet
2133         // Skip this on non-seekable, audio-only inputs.
2134         if ( pkt.pts >= 0 && ( self->seekable || self->video_format ) && *ignore == 0 && audio_used > samples / 2 )
2135         {
2136                 int64_t pts = pkt.pts;
2137                 if ( self->first_pts != AV_NOPTS_VALUE )
2138                         pts -= self->first_pts;
2139                 else if ( context->start_time != AV_NOPTS_VALUE )
2140                         pts -= context->start_time;
2141                 double timebase = av_q2d( context->streams[ index ]->time_base );
2142                 int64_t int_position = ( int64_t )( timebase * pts * fps + 0.5 );
2143                 int64_t req_position = ( int64_t )( timecode * fps + 0.5 );
2144
2145                 mlt_log_debug( MLT_PRODUCER_SERVICE(self->parent),
2146                         "A pkt.pts %"PRId64" pkt.dts %"PRId64" req_pos %"PRId64" cur_pos %"PRId64" pkt_pos %"PRId64"\n",
2147                         pkt.pts, pkt.dts, req_position, self->current_position, int_position );
2148
2149                 if ( int_position > 0 )
2150                 {
2151                         if ( int_position < req_position )
2152                                 // We are behind, so skip some
2153                                 *ignore = req_position - int_position;
2154                         else if ( self->audio_index != INT_MAX && int_position > req_position + 2 )
2155                                 // We are ahead, so seek backwards some more
2156                                 seek_audio( self, req_position, timecode - 1.0 );
2157                 }
2158                 // Cancel the find_first_pts() in seek_audio()
2159                 if ( self->video_index == -1 && self->last_position == POSITION_INITIAL )
2160                         self->last_position = int_position;
2161         }
2162
2163         self->audio_used[ index ] = audio_used;
2164
2165         return ret;
2166 }
2167
2168 /** Get the audio from a frame.
2169 */
2170 static int producer_get_audio( mlt_frame frame, void **buffer, mlt_audio_format *format, int *frequency, int *channels, int *samples )
2171 {
2172         // Get the producer
2173         producer_avformat self = mlt_frame_pop_audio( frame );
2174
2175         pthread_mutex_lock( &self->audio_mutex );
2176
2177         // Obtain the frame number of this frame
2178         mlt_position position = mlt_frame_original_position( frame );
2179
2180         // Calculate the real time code
2181         double real_timecode = producer_time_of_frame( self->parent, position );
2182
2183         // Get the producer fps
2184         double fps = mlt_producer_get_fps( self->parent );
2185
2186         // Number of frames to ignore (for ffwd)
2187         int ignore[ MAX_AUDIO_STREAMS ] = { 0 };
2188
2189         // Flag for paused (silence)
2190         int paused = seek_audio( self, position, real_timecode );
2191
2192         // Initialize ignore for all streams from the seek return value
2193         int i = MAX_AUDIO_STREAMS;
2194         while ( i-- )
2195                 ignore[i] = ignore[0];
2196
2197         // Fetch the audio_format
2198         AVFormatContext *context = self->audio_format;
2199         if ( !context )
2200                 goto exit_get_audio;
2201
2202         int sizeof_sample = sizeof( int16_t );
2203
2204         // Determine the tracks to use
2205         int index = self->audio_index;
2206         int index_max = self->audio_index + 1;
2207         if ( self->audio_index == INT_MAX )
2208         {
2209                 index = 0;
2210                 index_max = FFMIN( MAX_AUDIO_STREAMS, context->nb_streams );
2211                 *channels = self->total_channels;
2212                 *samples = mlt_sample_calculator( fps, self->max_frequency, position );
2213                 *frequency = self->max_frequency;
2214         }
2215
2216         // Initialize the buffers
2217         for ( ; index < index_max && index < MAX_AUDIO_STREAMS; index++ )
2218         {
2219                 // Get codec context
2220                 AVCodecContext *codec_context = self->audio_codec[ index ];
2221
2222                 if ( codec_context && !self->audio_buffer[ index ] )
2223                 {
2224                         codec_context->request_channels = self->audio_index == INT_MAX ? codec_context->channels : *channels;
2225                         sizeof_sample = sample_bytes( codec_context );
2226
2227                         // Check for audio buffer and create if necessary
2228                         self->audio_buffer_size[ index ] = MAX_AUDIO_FRAME_SIZE * sizeof_sample;
2229                         self->audio_buffer[ index ] = mlt_pool_alloc( self->audio_buffer_size[ index ] );
2230
2231                         // Check for decoder buffer and create if necessary
2232                         self->decode_buffer[ index ] = av_malloc( self->audio_buffer_size[ index ] );
2233                 }
2234         }
2235
2236         // Get the audio if required
2237         if ( !paused && *frequency > 0 )
2238         {
2239                 int ret = 0;
2240                 int got_audio = 0;
2241                 AVPacket pkt;
2242
2243                 av_init_packet( &pkt );
2244
2245                 // Caller requested number samples based on requested sample rate.
2246                 if ( self->audio_index != INT_MAX )
2247                         *samples = mlt_sample_calculator( fps, self->audio_codec[ self->audio_index ]->sample_rate, position );
2248
2249                 while ( ret >= 0 && !got_audio )
2250                 {
2251                         // Check if the buffer already contains the samples required
2252                         if ( self->audio_index != INT_MAX &&
2253                                  self->audio_used[ self->audio_index ] >= *samples &&
2254                                  ignore[ self->audio_index ] == 0 )
2255                         {
2256                                 got_audio = 1;
2257                                 break;
2258                         }
2259                         else if ( self->audio_index == INT_MAX )
2260                         {
2261                                 // Check if there is enough audio for all streams
2262                                 got_audio = 1;
2263                                 for ( index = 0; got_audio && index < index_max; index++ )
2264                                         if ( ( self->audio_codec[ index ] && self->audio_used[ index ] < *samples ) || ignore[ index ] )
2265                                                 got_audio = 0;
2266                                 if ( got_audio )
2267                                         break;
2268                         }
2269
2270                         // Read a packet
2271                         pthread_mutex_lock( &self->packets_mutex );
2272                         if ( mlt_deque_count( self->apackets ) )
2273                         {
2274                                 AVPacket *tmp = (AVPacket*) mlt_deque_pop_front( self->apackets );
2275                                 pkt = *tmp;
2276                                 free( tmp );
2277                         }
2278                         else
2279                         {
2280                                 ret = av_read_frame( context, &pkt );
2281                                 if ( ret >= 0 && !self->seekable && pkt.stream_index == self->video_index )
2282                                 {
2283                                         if ( !av_dup_packet( &pkt ) )
2284                                         {
2285                                                 AVPacket *tmp = malloc( sizeof(AVPacket) );
2286                                                 *tmp = pkt;
2287                                                 mlt_deque_push_back( self->vpackets, tmp );
2288                                         }
2289                                 }
2290                                 else if ( ret < 0 )
2291                                 {
2292                                         mlt_producer producer = self->parent;
2293                                         mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
2294                                         mlt_log_verbose( MLT_PRODUCER_SERVICE(producer), "av_read_frame returned error %d inside get_audio\n", ret );
2295                                         if ( !self->seekable && mlt_properties_get_int( properties, "reconnect" ) )
2296                                         {
2297                                                 // Try to reconnect to live sources by closing context and codecs,
2298                                                 // and letting next call to get_frame() reopen.
2299                                                 prepare_reopen( self );
2300                                                 pthread_mutex_unlock( &self->packets_mutex );
2301                                                 goto exit_get_audio;
2302                                         }
2303                                         if ( !self->seekable && mlt_properties_get_int( properties, "exit_on_disconnect" ) )
2304                                         {
2305                                                 mlt_log_fatal( MLT_PRODUCER_SERVICE(producer), "Exiting with error due to disconnected source.\n" );
2306                                                 exit( EXIT_FAILURE );
2307                                         }
2308                                 }
2309                         }
2310                         pthread_mutex_unlock( &self->packets_mutex );
2311
2312                         // We only deal with audio from the selected audio index
2313                         index = pkt.stream_index;
2314                         if ( index < MAX_AUDIO_STREAMS && ret >= 0 && pkt.data && pkt.size > 0 && ( index == self->audio_index ||
2315                                  ( self->audio_index == INT_MAX && context->streams[ index ]->codec->codec_type == CODEC_TYPE_AUDIO ) ) )
2316                         {
2317                                 int channels2 = self->audio_codec[index]->channels;
2318                                 ret = decode_audio( self, &ignore[index], pkt, channels2, *samples, real_timecode, fps );
2319                         }
2320
2321                         if ( self->seekable || index != self->video_index )
2322                                 av_free_packet( &pkt );
2323
2324                 }
2325
2326                 // Set some additional return values
2327                 *format = mlt_audio_s16;
2328                 if ( self->audio_index != INT_MAX )
2329                 {
2330                         index = self->audio_index;
2331                         *channels = self->audio_codec[ index ]->channels;
2332                         *frequency = self->audio_codec[ index ]->sample_rate;
2333                         *format = pick_audio_format( self->audio_codec[ index ]->sample_fmt );
2334                         sizeof_sample = sample_bytes( self->audio_codec[ index ] );
2335                 }
2336                 else if ( self->audio_index == INT_MAX )
2337                 {
2338                         for ( index = 0; index < index_max; index++ )
2339                                 if ( self->audio_codec[ index ] )
2340                                 {
2341                                         // XXX: This only works if all audio tracks have the same sample format.
2342                                         *format = pick_audio_format( self->audio_codec[ index ]->sample_fmt );
2343                                         sizeof_sample = sample_bytes( self->audio_codec[ index ] );
2344                                         break;
2345                                 }
2346                 }
2347
2348                 // Allocate and set the frame's audio buffer
2349                 int size = mlt_audio_format_size( *format, *samples, *channels );
2350                 *buffer = mlt_pool_alloc( size );
2351                 mlt_frame_set_audio( frame, *buffer, *format, size, mlt_pool_release );
2352
2353                 // Interleave tracks if audio_index=all
2354                 if ( self->audio_index == INT_MAX )
2355                 {
2356                         uint8_t *dest = *buffer;
2357                         int i;
2358                         for ( i = 0; i < *samples; i++ )
2359                         {
2360                                 for ( index = 0; index < index_max; index++ )
2361                                 if ( self->audio_codec[ index ] )
2362                                 {
2363                                         int current_channels = self->audio_codec[ index ]->channels;
2364                                         uint8_t *src = self->audio_buffer[ index ] + i * current_channels * sizeof_sample;
2365                                         memcpy( dest, src, current_channels * sizeof_sample );
2366                                         dest += current_channels * sizeof_sample;
2367                                 }
2368                         }
2369                         for ( index = 0; index < index_max; index++ )
2370                         if ( self->audio_codec[ index ] && self->audio_used[ index ] >= *samples )
2371                         {
2372                                 int current_channels = self->audio_codec[ index ]->channels;
2373                                 uint8_t *src = self->audio_buffer[ index ] + *samples * current_channels * sizeof_sample;
2374                                 self->audio_used[index] -= *samples;
2375                                 memmove( self->audio_buffer[ index ], src, self->audio_used[ index ] * current_channels * sizeof_sample );
2376                         }
2377                 }
2378                 // Copy a single track to the output buffer
2379                 else
2380                 {
2381                         index = self->audio_index;
2382
2383                         // Now handle the audio if we have enough
2384                         if ( self->audio_used[ index ] > 0 )
2385                         {
2386                                 uint8_t *src = self->audio_buffer[ index ];
2387                                 // copy samples from audio_buffer
2388                                 size = self->audio_used[ index ] < *samples ? self->audio_used[ index ] : *samples;
2389                                 memcpy( *buffer, src, size * *channels * sizeof_sample );
2390                                 // supply the remaining requested samples as silence
2391                                 if ( *samples > self->audio_used[ index ] )
2392                                         memset( *buffer + size * *channels * sizeof_sample, 0, ( *samples - self->audio_used[ index ] ) * *channels * sizeof_sample );
2393                                 // reposition the samples within audio_buffer
2394                                 self->audio_used[ index ] -= size;
2395                                 memmove( src, src + size * *channels * sizeof_sample, self->audio_used[ index ] * *channels * sizeof_sample );
2396                         }
2397                         else
2398                         {
2399                                 // Otherwise fill with silence
2400                                 memset( *buffer, 0, *samples * *channels * sizeof_sample );
2401                         }
2402                 }
2403         }
2404         else
2405         {
2406 exit_get_audio:
2407                 // Get silence and don't touch the context
2408                 mlt_frame_get_audio( frame, buffer, format, frequency, channels, samples );
2409         }
2410
2411         // Regardless of speed (other than paused), we expect to get the next frame
2412         if ( !paused )
2413                 self->audio_expected = position + 1;
2414
2415         pthread_mutex_unlock( &self->audio_mutex );
2416
2417         return 0;
2418 }
2419
2420 /** Initialize the audio codec context.
2421 */
2422
2423 static int audio_codec_init( producer_avformat self, int index, mlt_properties properties )
2424 {
2425         // Initialise the codec if necessary
2426         if ( !self->audio_codec[ index ] )
2427         {
2428                 // Get codec context
2429                 AVCodecContext *codec_context = self->audio_format->streams[index]->codec;
2430
2431                 // Find the codec
2432                 AVCodec *codec = avcodec_find_decoder( codec_context->codec_id );
2433
2434                 // If we don't have a codec and we can't initialise it, we can't do much more...
2435                 pthread_mutex_lock( &self->open_mutex );
2436 #if LIBAVCODEC_VERSION_INT >= ((53<<16)+(8<<8)+0)
2437                 if ( codec && avcodec_open2( codec_context, codec, NULL ) >= 0 )
2438 #else
2439                 if ( codec && avcodec_open( codec_context, codec ) >= 0 )
2440 #endif
2441                 {
2442                         // Now store the codec with its destructor
2443                         if ( self->audio_codec[ index ] )
2444                                 avcodec_close( self->audio_codec[ index ] );
2445                         self->audio_codec[ index ] = codec_context;
2446                 }
2447                 else
2448                 {
2449                         // Remember that we can't use self later
2450                         self->audio_index = -1;
2451                 }
2452                 pthread_mutex_unlock( &self->open_mutex );
2453
2454                 // Process properties as AVOptions
2455                 apply_properties( codec_context, properties, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_DECODING_PARAM );
2456                 if ( codec && codec->priv_class && codec_context->priv_data )
2457                         apply_properties( codec_context->priv_data, properties, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_DECODING_PARAM );
2458         }
2459         return self->audio_codec[ index ] && self->audio_index > -1;
2460 }
2461
2462 /** Set up audio handling.
2463 */
2464
2465 static void producer_set_up_audio( producer_avformat self, mlt_frame frame )
2466 {
2467         // Get the producer
2468         mlt_producer producer = self->parent;
2469
2470         // Get the properties
2471         mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
2472
2473         // Fetch the audio format context
2474         AVFormatContext *context = self->audio_format;
2475
2476         mlt_properties frame_properties = MLT_FRAME_PROPERTIES( frame );
2477
2478         // Get the audio_index
2479         int index = mlt_properties_get_int( properties, "audio_index" );
2480
2481         // Handle all audio tracks
2482         if ( self->audio_index > -1 &&
2483              mlt_properties_get( properties, "audio_index" ) &&
2484              !strcmp( mlt_properties_get( properties, "audio_index" ), "all" ) )
2485                 index = INT_MAX;
2486
2487         // Reopen the file if necessary
2488         if ( !context && self->audio_index > -1 && index > -1 )
2489         {
2490                 producer_open( self, mlt_service_profile( MLT_PRODUCER_SERVICE(producer) ),
2491                         mlt_properties_get( properties, "resource" ), 1 );
2492                 context = self->audio_format;
2493         }
2494
2495         // Exception handling for audio_index
2496         if ( context && index >= (int) context->nb_streams && index < INT_MAX )
2497         {
2498                 for ( index = context->nb_streams - 1;
2499                           index >= 0 && context->streams[ index ]->codec->codec_type != CODEC_TYPE_AUDIO;
2500                           index-- );
2501                 mlt_properties_set_int( properties, "audio_index", index );
2502         }
2503         if ( context && index > -1 && index < INT_MAX &&
2504                  context->streams[ index ]->codec->codec_type != CODEC_TYPE_AUDIO )
2505         {
2506                 index = self->audio_index;
2507                 mlt_properties_set_int( properties, "audio_index", index );
2508         }
2509         if ( context && index > -1 && index < INT_MAX &&
2510                  pick_audio_format( context->streams[ index ]->codec->sample_fmt ) == mlt_audio_none )
2511         {
2512                 index = -1;
2513         }
2514
2515         // Update the audio properties if the index changed
2516         if ( context && index > -1 && index != self->audio_index )
2517         {
2518                 pthread_mutex_lock( &self->open_mutex );
2519                 if ( self->audio_codec[ self->audio_index ] )
2520                         avcodec_close( self->audio_codec[ self->audio_index ] );
2521                 self->audio_codec[ self->audio_index ] = NULL;
2522                 pthread_mutex_unlock( &self->open_mutex );
2523         }
2524         if ( self->audio_index != -1 )
2525                 self->audio_index = index;
2526         else
2527                 index = -1;
2528
2529         // Get the codec(s)
2530         if ( context && index == INT_MAX )
2531         {
2532                 mlt_properties_set_int( frame_properties, "audio_frequency", self->max_frequency );
2533                 mlt_properties_set_int( frame_properties, "audio_channels", self->total_channels );
2534                 for ( index = 0; index < context->nb_streams; index++ )
2535                 {
2536                         if ( context->streams[ index ]->codec->codec_type == CODEC_TYPE_AUDIO )
2537                                 audio_codec_init( self, index, properties );
2538                 }
2539         }
2540         else if ( context && index > -1 && index < MAX_AUDIO_STREAMS &&
2541                 audio_codec_init( self, index, properties ) )
2542         {
2543                 mlt_properties_set_int( frame_properties, "audio_frequency", self->audio_codec[ index ]->sample_rate );
2544                 mlt_properties_set_int( frame_properties, "audio_channels", self->audio_codec[ index ]->channels );
2545         }
2546         if ( context && index > -1 )
2547         {
2548                 // Add our audio operation
2549                 mlt_frame_push_audio( frame, self );
2550                 mlt_frame_push_audio( frame, producer_get_audio );
2551         }
2552 }
2553
2554 /** Our get frame implementation.
2555 */
2556
2557 static int producer_get_frame( mlt_producer producer, mlt_frame_ptr frame, int index )
2558 {
2559         // Access the private data
2560         mlt_service service = MLT_PRODUCER_SERVICE( producer );
2561         mlt_cache_item cache_item = mlt_service_cache_get( service, "producer_avformat" );
2562         producer_avformat self = mlt_cache_item_data( cache_item, NULL );
2563
2564         // If cache miss
2565         if ( !self )
2566         {
2567                 self = calloc( 1, sizeof( struct producer_avformat_s ) );
2568                 producer->child = self;
2569                 self->parent = producer;
2570                 mlt_service_cache_put( service, "producer_avformat", self, 0, (mlt_destructor) producer_avformat_close );
2571                 cache_item = mlt_service_cache_get( service, "producer_avformat" );
2572         }
2573
2574         // Create an empty frame
2575         *frame = mlt_frame_init( service);
2576
2577         if ( *frame )
2578         {
2579                 mlt_properties_set_data( MLT_FRAME_PROPERTIES(*frame), "avformat_cache", cache_item, 0, (mlt_destructor) mlt_cache_item_close, NULL );
2580         }
2581         else
2582         {
2583                 mlt_cache_item_close( cache_item );
2584                 return 1;
2585         }
2586
2587         // Update timecode on the frame we're creating
2588         mlt_frame_set_position( *frame, mlt_producer_position( producer ) );
2589
2590         // Set up the video
2591         producer_set_up_video( self, *frame );
2592
2593         // Set up the audio
2594         producer_set_up_audio( self, *frame );
2595
2596         // Set the position of this producer
2597         mlt_position position = self->seekable ? mlt_producer_frame( producer ) : self->nonseek_position++;
2598         mlt_properties_set_position( MLT_FRAME_PROPERTIES( *frame ), "original_position", position );
2599
2600         // Calculate the next timecode
2601         mlt_producer_prepare_next( producer );
2602
2603         return 0;
2604 }
2605
2606 static void producer_avformat_close( producer_avformat self )
2607 {
2608         mlt_log_debug( NULL, "producer_avformat_close\n" );
2609
2610         // Cleanup av contexts
2611         av_free_packet( &self->pkt );
2612         av_free( self->video_frame );
2613         av_free( self->audio_frame );
2614         pthread_mutex_lock( &self->open_mutex );
2615         int i;
2616         for ( i = 0; i < MAX_AUDIO_STREAMS; i++ )
2617         {
2618                 mlt_pool_release( self->audio_buffer[i] );
2619                 av_free( self->decode_buffer[i] );
2620                 if ( self->audio_codec[i] )
2621                         avcodec_close( self->audio_codec[i] );
2622                 self->audio_codec[i] = NULL;
2623         }
2624         if ( self->video_codec )
2625                 avcodec_close( self->video_codec );
2626         self->video_codec = NULL;
2627         // Close the file
2628 #if LIBAVFORMAT_VERSION_INT >= ((53<<16)+(17<<8)+0)
2629         if ( self->dummy_context )
2630                 avformat_close_input( &self->dummy_context );
2631         if ( self->seekable && self->audio_format )
2632                 avformat_close_input( &self->audio_format );
2633         if ( self->video_format )
2634                 avformat_close_input( &self->video_format );
2635 #else
2636         if ( self->dummy_context )
2637                 av_close_input_file( self->dummy_context );
2638         if ( self->seekable && self->audio_format )
2639                 av_close_input_file( self->audio_format );
2640         if ( self->video_format )
2641                 av_close_input_file( self->video_format );
2642 #endif
2643         pthread_mutex_unlock( &self->open_mutex );
2644 #ifdef VDPAU
2645         vdpau_producer_close( self );
2646 #endif
2647         if ( self->image_cache )
2648                 mlt_cache_close( self->image_cache );
2649
2650         // Cleanup the mutexes
2651         if ( self->is_mutex_init )
2652         {
2653                 pthread_mutex_destroy( &self->audio_mutex );
2654                 pthread_mutex_destroy( &self->video_mutex );
2655                 pthread_mutex_destroy( &self->packets_mutex );
2656                 pthread_mutex_destroy( &self->open_mutex );
2657         }
2658
2659         // Cleanup the packet queues
2660         AVPacket *pkt;
2661         if ( self->apackets )
2662         {
2663                 while ( ( pkt = mlt_deque_pop_back( self->apackets ) ) )
2664                 {
2665                         av_free_packet( pkt );
2666                         free( pkt );
2667                 }
2668                 mlt_deque_close( self->apackets );
2669                 self->apackets = NULL;
2670         }
2671         if ( self->vpackets )
2672         {
2673                 while ( ( pkt = mlt_deque_pop_back( self->vpackets ) ) )
2674                 {
2675                         av_free_packet( pkt );
2676                         free( pkt );
2677                 }
2678                 mlt_deque_close( self->vpackets );
2679                 self->vpackets = NULL;
2680         }
2681
2682         free( self );
2683 }
2684
2685 static void producer_close( mlt_producer parent )
2686 {
2687         // Remove this instance from the cache
2688         mlt_service_cache_purge( MLT_PRODUCER_SERVICE(parent) );
2689
2690         // Close the parent
2691         parent->close = NULL;
2692         mlt_producer_close( parent );
2693
2694         // Free the memory
2695         free( parent );
2696 }