research.m1stereo.tv/gitweb/ - melted/blob - src/modules/avformat/consumer_avformat.c

   1 /*
   2  * consumer_avformat.c -- an encoder based on avformat
   3  * Copyright (C) 2003-2004 Ushodaya Enterprises Limited
   4  * Author: Charles Yates <charles.yates@pandora.be>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software Foundation,
  18  * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  19  */
  20
  21 // Local header files
  22 #include "consumer_avformat.h"
  23
  24 // mlt Header files
  25 #include <framework/mlt_frame.h>
  26
  27 // System header files
  28 #include <stdio.h>
  29 #include <stdlib.h>
  30 #include <string.h>
  31 #include <pthread.h>
  32
  33 #include <math.h>
  34
  35 // avformat header files
  36 #include <ffmpeg/avformat.h>
  37
  38 typedef struct
  39 {
  40         int16_t *buffer;
  41         int size;
  42         int used;
  43 }
  44 *sample_fifo, sample_fifo_s;
  45
  46 sample_fifo sample_fifo_init( )
  47 {
  48         return calloc( 1, sizeof( sample_fifo_s ) );
  49 }
  50
  51 void sample_fifo_append( sample_fifo this, int16_t *samples, int count )
  52 {
  53         if ( ( this->size - this->used ) < count )
  54         {
  55                 this->size += count * 5;
  56                 this->buffer = realloc( this->buffer, this->size * sizeof( int16_t ) );
  57         }
  58
  59         memcpy( &this->buffer[ this->used ], samples, count * sizeof( int16_t ) );
  60         this->used += count;
  61 }
  62
  63 int sample_fifo_used( sample_fifo this )
  64 {
  65         return this->used;
  66 }
  67
  68 int sample_fifo_fetch( sample_fifo this, int16_t *samples, int count )
  69 {
  70         if ( count > this->used )
  71                 count = this->used;
  72
  73         memcpy( samples, this->buffer, count * sizeof( int16_t ) );
  74         this->used -= count;
  75         memmove( this->buffer, &this->buffer[ count ], this->used * sizeof( int16_t ) );
  76
  77         return count;
  78 }
  79
  80 void sample_fifo_close( sample_fifo this )
  81 {
  82         free( this->buffer );
  83         free( this );
  84 }
  85
  86 // Forward references.
  87 static int consumer_start( mlt_consumer this );
  88 static int consumer_stop( mlt_consumer this );
  89 static int consumer_is_stopped( mlt_consumer this );
  90 static void *consumer_thread( void *arg );
  91 static void consumer_close( mlt_consumer this );
  92
  93 /** Initialise the dv consumer.
  94 */
  95
  96 mlt_consumer consumer_avformat_init( char *arg )
  97 {
  98         // Allocate the consumer
  99         mlt_consumer this = calloc( 1, sizeof( struct mlt_consumer_s ) );
 100
 101         // If memory allocated and initialises without error
 102         if ( this != NULL && mlt_consumer_init( this, NULL ) == 0 )
 103         {
 104                 // Get properties from the consumer
 105                 mlt_properties properties = mlt_consumer_properties( this );
 106
 107                 // Assign close callback
 108                 this->close = consumer_close;
 109
 110                 // Interpret the argument
 111                 if ( arg != NULL )
 112                         mlt_properties_set( properties, "target", arg );
 113
 114                 // sample and frame queue
 115                 mlt_properties_set_data( properties, "sample_fifo", sample_fifo_init( ), 0, ( mlt_destructor )sample_fifo_close, NULL );
 116                 mlt_properties_set_data( properties, "frame_queue", mlt_deque_init( ), 0, ( mlt_destructor )mlt_deque_close, NULL );
 117
 118                 // Set avformat defaults
 119                 mlt_properties_set_int( properties, "audio_bit_rate", 128000 );
 120                 mlt_properties_set_int( properties, "video_bit_rate", 200 * 1000 );
 121                 mlt_properties_set_int( properties, "video_bit_rate_tolerance", 4000 * 1000 );
 122                 mlt_properties_set_int( properties, "frame_rate_base", 1 );
 123                 mlt_properties_set_int( properties, "gop_size", 12 );
 124                 mlt_properties_set_int( properties, "max_b_frames", 0 );
 125                 mlt_properties_set_int( properties, "mb_decision", 0 );
 126                 mlt_properties_set_double( properties, "qscale", 0 );
 127                 mlt_properties_set_int( properties, "me_method", ME_EPZS );
 128
 129                 // Ensure termination at end of the stream
 130                 mlt_properties_set_int( properties, "terminate_on_pause", 1 );
 131
 132                 // Set up start/stop/terminated callbacks
 133                 this->start = consumer_start;
 134                 this->stop = consumer_stop;
 135                 this->is_stopped = consumer_is_stopped;
 136         }
 137         else
 138         {
 139                 // Clean up in case of init failure
 140                 free( this );
 141                 this = NULL;
 142         }
 143
 144         // Return this
 145         return this;
 146 }
 147
 148 /** Start the consumer.
 149 */
 150
 151 static int consumer_start( mlt_consumer this )
 152 {
 153         // Get the properties
 154         mlt_properties properties = mlt_consumer_properties( this );
 155
 156         // Check that we're not already running
 157         if ( !mlt_properties_get_int( properties, "running" ) )
 158         {
 159                 // Allocate a thread
 160                 pthread_t *thread = calloc( 1, sizeof( pthread_t ) );
 161                 pthread_attr_t thread_attributes;
 162
 163                 // Get the width and height
 164                 int width = mlt_properties_get_int( properties, "width" );
 165                 int height = mlt_properties_get_int( properties, "height" );
 166
 167                 // Obtain the size property
 168                 char *size = mlt_properties_get( properties, "size" );
 169
 170                 // Interpret it
 171                 if ( size != NULL )
 172                 {
 173                         int tw, th;
 174                         if ( sscanf( size, "%dx%d", &tw, &th ) == 2 && tw > 0 && th > 0 )
 175                         {
 176                                 width = tw;
 177                                 height = th;
 178                         }
 179                         else
 180                         {
 181                                 fprintf( stderr, "consumer_avformat: Invalid size property %s - ignoring.\n", size );
 182                         }
 183                 }
 184
 185                 // Now ensure we honour the multiple of two requested by libavformat
 186                 mlt_properties_set_int( properties, "width", ( width / 2 ) * 2 );
 187                 mlt_properties_set_int( properties, "height", ( height / 2 ) * 2 );
 188
 189                 // Assign the thread to properties
 190                 mlt_properties_set_data( properties, "thread", thread, sizeof( pthread_t ), free, NULL );
 191
 192                 // Set the running state
 193                 mlt_properties_set_int( properties, "running", 1 );
 194
 195                 // Inherit the scheduling priority
 196                 pthread_attr_init( &thread_attributes );
 197                 pthread_attr_setinheritsched( &thread_attributes, PTHREAD_INHERIT_SCHED );
 198
 199                 // Create the thread
 200                 pthread_create( thread, &thread_attributes, consumer_thread, this );
 201         }
 202         return 0;
 203 }
 204
 205 /** Stop the consumer.
 206 */
 207
 208 static int consumer_stop( mlt_consumer this )
 209 {
 210         // Get the properties
 211         mlt_properties properties = mlt_consumer_properties( this );
 212
 213         // Check that we're running
 214         if ( mlt_properties_get_int( properties, "running" ) )
 215         {
 216                 // Get the thread
 217                 pthread_t *thread = mlt_properties_get_data( properties, "thread", NULL );
 218
 219                 // Stop the thread
 220                 mlt_properties_set_int( properties, "running", 0 );
 221
 222                 // Wait for termination
 223                 pthread_join( *thread, NULL );
 224         }
 225
 226         return 0;
 227 }
 228
 229 /** Determine if the consumer is stopped.
 230 */
 231
 232 static int consumer_is_stopped( mlt_consumer this )
 233 {
 234         // Get the properties
 235         mlt_properties properties = mlt_consumer_properties( this );
 236         return !mlt_properties_get_int( properties, "running" );
 237 }
 238
 239 /** Add an audio output stream
 240 */
 241
 242 static AVStream *add_audio_stream( mlt_consumer this, AVFormatContext *oc, int codec_id )
 243 {
 244         // Get the properties
 245         mlt_properties properties = mlt_consumer_properties( this );
 246
 247         // Create a new stream
 248         AVStream *st = av_new_stream( oc, 1 );
 249
 250         // If created, then initialise from properties
 251         if ( st != NULL )
 252         {
 253                 AVCodecContext *c = &st->codec;
 254                 c->codec_id = codec_id;
 255                 c->codec_type = CODEC_TYPE_AUDIO;
 256
 257                 // Put sample parameters
 258                 c->bit_rate = mlt_properties_get_int( properties, "audio_bit_rate" );
 259                 c->sample_rate = mlt_properties_get_int( properties, "frequency" );
 260                 c->channels = mlt_properties_get_int( properties, "channels" );
 261         }
 262         else
 263         {
 264                 fprintf( stderr, "Could not allocate a stream for audio\n" );
 265         }
 266
 267         return st;
 268 }
 269
 270 static int open_audio( AVFormatContext *oc, AVStream *st, int audio_outbuf_size )
 271 {
 272         // We will return the audio input size from here
 273         int audio_input_frame_size = 0;
 274
 275         // Get the context
 276         AVCodecContext *c = &st->codec;
 277
 278         // Find the encoder
 279         AVCodec *codec = avcodec_find_encoder( c->codec_id );
 280
 281         // Continue if codec found and we can open it
 282         if ( codec != NULL && avcodec_open(c, codec) >= 0 )
 283         {
 284                 // ugly hack for PCM codecs (will be removed ASAP with new PCM
 285                 // support to compute the input frame size in samples
 286                 if ( c->frame_size <= 1 )
 287                 {
 288                         audio_input_frame_size = audio_outbuf_size / c->channels;
 289                         switch(st->codec.codec_id)
 290                         {
 291                                 case CODEC_ID_PCM_S16LE:
 292                                 case CODEC_ID_PCM_S16BE:
 293                                 case CODEC_ID_PCM_U16LE:
 294                                 case CODEC_ID_PCM_U16BE:
 295                                         audio_input_frame_size >>= 1;
 296                                         break;
 297                                 default:
 298                                         break;
 299                         }
 300                 }
 301                 else
 302                 {
 303                         audio_input_frame_size = c->frame_size;
 304                 }
 305
 306                 // Some formats want stream headers to be seperate (hmm)
 307                 if( !strcmp( oc->oformat->name, "mp4" ) ||
 308                         !strcmp( oc->oformat->name, "mov" ) ||
 309                         !strcmp( oc->oformat->name, "3gp" ) )
 310                         c->flags |= CODEC_FLAG_GLOBAL_HEADER;
 311         }
 312         else
 313         {
 314                 fprintf( stderr, "Unable to encode audio - disabling audio output.\n" );
 315         }
 316
 317         return audio_input_frame_size;
 318 }
 319
 320 static void close_audio( AVFormatContext *oc, AVStream *st )
 321 {
 322         avcodec_close( &st->codec );
 323 }
 324
 325 /** Add a video output stream
 326 */
 327
 328 static AVStream *add_video_stream( mlt_consumer this, AVFormatContext *oc, int codec_id )
 329 {
 330         // Get the properties
 331         mlt_properties properties = mlt_consumer_properties( this );
 332
 333         // Create a new stream
 334         AVStream *st = av_new_stream( oc, 0 );
 335
 336         if ( st != NULL )
 337         {
 338                 AVCodecContext *c = &st->codec;
 339                 c->codec_id = codec_id;
 340                 c->codec_type = CODEC_TYPE_VIDEO;
 341
 342                 // put sample parameters
 343                 c->bit_rate = mlt_properties_get_int( properties, "video_bit_rate" );
 344                 c->bit_rate_tolerance = mlt_properties_get_int( properties, "video_bit_rate_tolerance" );
 345                 c->width = mlt_properties_get_int( properties, "width" );
 346                 c->height = mlt_properties_get_int( properties, "height" );
 347                 c->frame_rate = mlt_properties_get_double( properties, "fps" );
 348                 c->frame_rate_base = mlt_properties_get_double( properties, "frame_rate_base" );
 349                 c->frame_rate_base = 1;
 350                 c->gop_size = mlt_properties_get_int( properties, "gop_size" );
 351                 c->max_b_frames = mlt_properties_get_int( properties, "max_b_frames" );
 352                 if ( c->max_b_frames )
 353                 {
 354                         c->b_frame_strategy = 0;
 355                         c->b_quant_factor = 2.0;
 356                 }
 357
 358                 c->mb_decision = mlt_properties_get_int( properties, "mb_decision" );
 359                 c->sample_aspect_ratio = av_d2q( mlt_properties_get_double( properties, "aspect_ratio" ), 255 );
 360
 361
 362                 if ( mlt_properties_get_double( properties, "qscale" ) > 0 )
 363                 {
 364                         c->flags |= CODEC_FLAG_QSCALE;
 365                         st->quality = FF_QP2LAMBDA * mlt_properties_get_double( properties, "qscale" );
 366                 }
 367
 368                 // Some formats want stream headers to be seperate (hmm)
 369                 if( !strcmp( oc->oformat->name, "mp4" ) ||
 370                         !strcmp( oc->oformat->name, "mov" ) ||
 371                         !strcmp( oc->oformat->name, "3gp" ) )
 372                         c->flags |= CODEC_FLAG_GLOBAL_HEADER;
 373
 374                 c->me_method = mlt_properties_get_int( properties, "me_method" );
 375         }
 376         else
 377         {
 378                 fprintf( stderr, "Could not allocate a stream for video\n" );
 379         }
 380
 381         return st;
 382 }
 383
 384 static AVFrame *alloc_picture( int pix_fmt, int width, int height )
 385 {
 386         // Allocate a frame
 387         AVFrame *picture = avcodec_alloc_frame();
 388
 389         // Determine size of the
 390         int size = avpicture_get_size(pix_fmt, width, height);
 391
 392         // Allocate the picture buf
 393         uint8_t *picture_buf = av_malloc(size);
 394
 395         // If we have both, then fill the image
 396         if ( picture != NULL && picture_buf != NULL )
 397         {
 398                 // Fill the frame with the allocated buffer
 399                 avpicture_fill( (AVPicture *)picture, picture_buf, pix_fmt, width, height);
 400         }
 401         else
 402         {
 403                 // Something failed - clean up what we can
 404                 av_free( picture );
 405                 av_free( picture_buf );
 406                 picture = NULL;
 407         }
 408
 409         return picture;
 410 }
 411
 412 static int open_video(AVFormatContext *oc, AVStream *st)
 413 {
 414         // Get the codec
 415         AVCodecContext *c = &st->codec;
 416
 417         // find the video encoder
 418         AVCodec *codec = avcodec_find_encoder(c->codec_id);
 419
 420         // Open the codec safely
 421         return codec != NULL && avcodec_open(c, codec) >= 0;
 422 }
 423
 424 void close_video(AVFormatContext *oc, AVStream *st)
 425 {
 426         avcodec_close(&st->codec);
 427 }
 428
 429 /** The main thread - the argument is simply the consumer.
 430 */
 431
 432 static void *consumer_thread( void *arg )
 433 {
 434         // Map the argument to the object
 435         mlt_consumer this = arg;
 436
 437         // Get the properties
 438         mlt_properties properties = mlt_consumer_properties( this );
 439
 440         // Get the terminate on pause property
 441         int terminate_on_pause = mlt_properties_get_int( properties, "terminate_on_pause" );
 442
 443         // Get the frame rate
 444         int fps = mlt_properties_get_double( properties, "fps" );
 445
 446         // Get width and height
 447         int width = mlt_properties_get_int( properties, "width" );
 448         int height = mlt_properties_get_int( properties, "height" );
 449         int img_width = width;
 450         int img_height = height;
 451
 452         // Get default audio properties
 453         mlt_audio_format aud_fmt = mlt_audio_pcm;
 454         int channels = mlt_properties_get_int( properties, "channels" );
 455         int frequency = mlt_properties_get_int( properties, "frequency" );
 456         int16_t *pcm = NULL;
 457         int samples = 0;
 458
 459         // AVFormat audio buffer and frame size
 460         int audio_outbuf_size = 2 * 128 * 1024;
 461         uint8_t *audio_outbuf = av_malloc( audio_outbuf_size );
 462         int audio_input_frame_size = 0;
 463
 464         // AVFormat video buffer and frame count
 465         int frame_count = 0;
 466         int video_outbuf_size = ( 1024 * 1024 );
 467         uint8_t *video_outbuf = av_malloc( video_outbuf_size );
 468
 469         // Used for the frame properties
 470         mlt_frame frame = NULL;
 471         mlt_properties frame_properties = NULL;
 472
 473         // Get the queues
 474         mlt_deque queue = mlt_properties_get_data( properties, "frame_queue", NULL );
 475         sample_fifo fifo = mlt_properties_get_data( properties, "sample_fifo", NULL );
 476
 477         // Need two av pictures for converting
 478         AVFrame *output = alloc_picture( PIX_FMT_YUV420P, width, height );
 479         AVFrame *input = alloc_picture( PIX_FMT_YUV422, width, height );
 480
 481         // For receiving images from an mlt_frame
 482         uint8_t *image;
 483         mlt_image_format img_fmt = mlt_image_yuv422;
 484
 485         // Fo receiving audio samples back from the fifo
 486         int16_t buffer[ 48000 * 2 ];
 487         int count = 0;
 488
 489         // Allocate the context
 490         AVFormatContext *oc = av_alloc_format_context( );
 491
 492         // Streams
 493         AVStream *audio_st = NULL;
 494         AVStream *video_st = NULL;
 495
 496         // Time stamps
 497         double audio_pts, video_pts;
 498
 499         // Loop variable
 500         int i;
 501
 502         // Determine the format
 503         AVOutputFormat *fmt = NULL;
 504         char *filename = mlt_properties_get( properties, "target" );
 505         char *format = mlt_properties_get( properties, "format" );
 506         char *vcodec = mlt_properties_get( properties, "vcodec" );
 507         char *acodec = mlt_properties_get( properties, "acodec" );
 508
 509         // Used to store and override codec ids
 510         int audio_codec_id;
 511         int video_codec_id;
 512
 513         // Check for user selected format first
 514         if ( format != NULL )
 515                 fmt = guess_format( format, NULL, NULL );
 516
 517         // Otherwise check on the filename
 518         if ( fmt == NULL && filename != NULL )
 519                 fmt = guess_format( NULL, filename, NULL );
 520
 521         // Otherwise default to mpeg
 522         if ( fmt == NULL )
 523                 fmt = guess_format( "mpeg", NULL, NULL );
 524
 525         // We need a filename - default to stdout?
 526         if ( filename == NULL )
 527                 filename = "pipe:";
 528
 529         // Get the codec ids selected
 530         audio_codec_id = fmt->audio_codec;
 531         video_codec_id = fmt->video_codec;
 532
 533         // Check for audio codec overides
 534         if ( acodec != NULL )
 535         {
 536                 AVCodec *p = first_avcodec;
 537                 while( p != NULL )
 538                 {
 539                         if ( !strcmp( p->name, acodec ) && p->type == CODEC_TYPE_AUDIO )
 540                                 break;
 541                         p = p->next;
 542                 }
 543                 if ( p != NULL )
 544                         audio_codec_id = p->id;
 545                 else
 546                         fprintf( stderr, "consumer_avcodec: audio codec %s unrecognised - ignoring\n", acodec );
 547         }
 548
 549         // Check for video codec overides
 550         if ( vcodec != NULL )
 551         {
 552                 AVCodec *p = first_avcodec;
 553                 while( p != NULL )
 554                 {
 555                         if ( !strcmp( p->name, vcodec ) && p->type == CODEC_TYPE_VIDEO )
 556                                 break;
 557                         p = p->next;
 558                 }
 559                 if ( p != NULL )
 560                         video_codec_id = p->id;
 561                 else
 562                         fprintf( stderr, "consumer_avcodec: video codec %s unrecognised - ignoring\n", vcodec );
 563         }
 564
 565         // Update the output context
 566         oc->oformat = fmt;
 567         snprintf( oc->filename, sizeof(oc->filename), "%s", filename );
 568
 569         // Add audio and video streams
 570         if ( fmt->video_codec != CODEC_ID_NONE )
 571                 video_st = add_video_stream( this, oc, video_codec_id );
 572         if ( fmt->audio_codec != CODEC_ID_NONE )
 573                 audio_st = add_audio_stream( this, oc, audio_codec_id );
 574
 575         // Set the parameters (even though we have none...)
 576         if ( av_set_parameters(oc, NULL) >= 0 )
 577         {
 578                 if ( video_st && !open_video( oc, video_st ) )
 579                         video_st = NULL;
 580                 if ( audio_st )
 581                         audio_input_frame_size = open_audio( oc, audio_st, audio_outbuf_size );
 582
 583                 // Open the output file, if needed
 584                 if ( !( fmt->flags & AVFMT_NOFILE ) )
 585                 {
 586                         if (url_fopen(&oc->pb, filename, URL_RDWR) < 0)
 587                         {
 588                                 fprintf(stderr, "Could not open '%s'\n", filename);
 589                                 mlt_properties_set_int( properties, "running", 0 );
 590                         }
 591                 }
 592
 593                 if ( url_is_streamed( &oc->pb ) )
 594                         fprintf( stderr, "FUCK!\n" );
 595
 596                 // Write the stream header, if any
 597                 if ( mlt_properties_get_int( properties, "running" ) )
 598                         av_write_header( oc );
 599         }
 600         else
 601         {
 602                 fprintf(stderr, "Invalid output format parameters\n");
 603                 mlt_properties_set_int( properties, "running", 0 );
 604         }
 605
 606         // Last check - need at least one stream
 607         if ( audio_st == NULL && video_st == NULL )
 608                 mlt_properties_set_int( properties, "running", 0 );
 609
 610         // Loop while running
 611         while( mlt_properties_get_int( properties, "running" ) )
 612         {
 613                 // Get the frame
 614                 frame = mlt_consumer_rt_frame( this );
 615
 616                 // Check that we have a frame to work with
 617                 if ( frame != NULL )
 618                 {
 619                         // Default audio args
 620                         frame_properties = mlt_frame_properties( frame );
 621
 622                         // Get audio and append to the fifo
 623                         if ( audio_st )
 624                         {
 625                                 samples = mlt_sample_calculator( fps, frequency, count );
 626                                 mlt_frame_get_audio( frame, &pcm, &aud_fmt, &frequency, &channels, &samples );
 627                                 sample_fifo_append( fifo, pcm, samples * channels );
 628                         }
 629
 630                         // Encode the image
 631                         if ( video_st )
 632                                 mlt_deque_push_back( queue, frame );
 633                         else
 634                                 mlt_frame_close( frame );
 635
 636                         // While we have stuff to process, process...
 637                         while ( 1 )
 638                         {
 639                                 // Compute current audio and video time
 640                                 if (audio_st)
 641                                         audio_pts = (double)audio_st->pts.val * oc->pts_num / oc->pts_den;
 642                                 else
 643                                         audio_pts = 0.0;
 644
 645                                 if (video_st)
 646                                         video_pts = (double)video_st->pts.val * oc->pts_num / oc->pts_den;
 647                                 else
 648                                         video_pts = 0.0;
 649
 650                                 // Write interleaved audio and video frames
 651                                 if ( !video_st || ( video_st && audio_st && audio_pts < video_pts ) )
 652                                 {
 653                                         if ( channels * audio_input_frame_size < sample_fifo_used( fifo ) )
 654                                         {
 655                                                 int out_size;
 656                                                 AVCodecContext *c;
 657
 658                                                 c = &audio_st->codec;
 659
 660                                                 sample_fifo_fetch( fifo, buffer, channels * audio_input_frame_size );
 661
 662                                                 out_size = avcodec_encode_audio( c, audio_outbuf, audio_outbuf_size, buffer );
 663
 664                                                 // Write the compressed frame in the media file
 665                                                 if (av_write_frame(oc, audio_st->index, audio_outbuf, out_size) != 0)
 666                                                         fprintf(stderr, "Error while writing audio frame\n");
 667                                         }
 668                                         else
 669                                         {
 670                                                 break;
 671                                         }
 672                                 }
 673                                 else if ( video_st )
 674                                 {
 675                                         if ( mlt_deque_count( queue ) )
 676                                         {
 677                                                 int out_size, ret;
 678                                                 AVCodecContext *c;
 679
 680                                                 frame = mlt_deque_pop_front( queue );
 681                                                 frame_properties = mlt_frame_properties( frame );
 682
 683                                                 if ( terminate_on_pause && mlt_properties_get_double( frame_properties, "_speed" ) == 0.0 )
 684                                                 {
 685                                                         mlt_properties_set_int( properties, "running", 0 );
 686                                                         break;
 687                                                 }
 688
 689                                                 c = &video_st->codec;
 690
 691                                                 if ( mlt_properties_get_int( frame_properties, "rendered" ) )
 692                                                 {
 693                                                         int i = 0;
 694                                                         int j = 0;
 695                                                         uint8_t *p;
 696                                                         uint8_t *q;
 697
 698                                                         mlt_frame_get_image( frame, &image, &img_fmt, &img_width, &img_height, 0 );
 699
 700                                                         q = image;
 701
 702                                                         for ( i = 0; i < height; i ++ )
 703                                                         {
 704                                                                 p = input->data[ 0 ] + i * input->linesize[ 0 ];
 705                                                                 j = width;
 706                                                                 while( j -- )
 707                                                                 {
 708                                                                         *p ++ = *q ++;
 709                                                                         *p ++ = *q ++;
 710                                                                 }
 711                                                         }
 712
 713                                                         img_convert( ( AVPicture * )output, PIX_FMT_YUV420P, ( AVPicture * )input, PIX_FMT_YUV422, width, height );
 714                                                 }
 715
 716                                                 if (oc->oformat->flags & AVFMT_RAWPICTURE)
 717                                                 {
 718                                                         // raw video case. The API will change slightly in the near future for that
 719                                                         ret = av_write_frame(oc, video_st->index, (uint8_t *)output, sizeof(AVPicture));
 720                                                 }
 721                                                 else
 722                                                 {
 723                                                         // Encode the image
 724                                                         out_size = avcodec_encode_video(c, video_outbuf, video_outbuf_size, output );
 725
 726                                                         // If zero size, it means the image was buffered
 727                                                         if (out_size != 0)
 728                                                         {
 729                                                                 // write the compressed frame in the media file
 730                                                                 // XXX: in case of B frames, the pts is not yet valid
 731                                                                 ret = av_write_frame( oc, video_st->index, video_outbuf, out_size );
 732                                                         }
 733                                                 }
 734                                                 frame_count++;
 735                                                 mlt_frame_close( frame );
 736                                         }
 737                                         else
 738                                         {
 739                                                 break;
 740                                         }
 741                                 }
 742                         }
 743                 }
 744         }
 745
 746         // close each codec
 747         if (video_st)
 748                 close_video(oc, video_st);
 749         if (audio_st)
 750                 close_audio(oc, audio_st);
 751
 752         // Write the trailer, if any
 753         av_write_trailer(oc);
 754
 755         // Free the streams
 756         for(i = 0; i < oc->nb_streams; i++)
 757                 av_freep(&oc->streams[i]);
 758
 759         // Close the output file
 760         if (!(fmt->flags & AVFMT_NOFILE))
 761                 url_fclose(&oc->pb);
 762
 763         // Clean up input and output frames
 764         av_free( output->data[0] );
 765         av_free( output );
 766         av_free( input->data[0] );
 767         av_free( input );
 768         av_free( video_outbuf );
 769
 770         // Free the stream
 771         av_free(oc);
 772
 773         return NULL;
 774 }
 775
 776 /** Close the consumer.
 777 */
 778
 779 static void consumer_close( mlt_consumer this )
 780 {
 781         // Stop the consumer
 782         mlt_consumer_stop( this );
 783
 784         // Close the parent
 785         mlt_consumer_close( this );
 786
 787         // Free the memory
 788         free( this );
 789 }