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