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

   1 /*
   2  * consumer_avformat.c -- an encoder based on avformat
   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_consumer.h>
  25 #include <framework/mlt_frame.h>
  26 #include <framework/mlt_profile.h>
  27 #include <framework/mlt_log.h>
  28 #include <framework/mlt_events.h>
  29
  30 // System header files
  31 #include <stdio.h>
  32 #include <stdlib.h>
  33 #include <string.h>
  34 #include <limits.h>
  35 #include <pthread.h>
  36 #include <sys/time.h>
  37 #include <unistd.h>
  38
  39 // avformat header files
  40 #include <libavformat/avformat.h>
  41 #include <libavformat/avio.h>
  42 #ifdef SWSCALE
  43 #include <libswscale/swscale.h>
  44 #endif
  45 #if LIBAVUTIL_VERSION_INT >= ((50<<16)+(8<<8)+0)
  46 #include <libavutil/pixdesc.h>
  47 #endif
  48 #include <libavutil/mathematics.h>
  49
  50 #if LIBAVUTIL_VERSION_INT >= ((50<<16)+(38<<8)+0)
  51 #  include <libavutil/samplefmt.h>
  52 #else
  53 #  define AV_SAMPLE_FMT_NONE SAMPLE_FMT_NONE
  54 #  define AV_SAMPLE_FMT_S16 SAMPLE_FMT_S16
  55 #  define AV_SAMPLE_FMT_S32 SAMPLE_FMT_S32
  56 #  define AV_SAMPLE_FMT_FLT SAMPLE_FMT_FLT
  57 #endif
  58
  59 #if LIBAVUTIL_VERSION_INT < (50<<16)
  60 #define PIX_FMT_RGB32 PIX_FMT_RGBA32
  61 #define PIX_FMT_YUYV422 PIX_FMT_YUV422
  62 #endif
  63
  64 #if LIBAVCODEC_VERSION_MAJOR >= 53
  65 #include <libavutil/opt.h>
  66 #define CODEC_TYPE_VIDEO      AVMEDIA_TYPE_VIDEO
  67 #define CODEC_TYPE_AUDIO      AVMEDIA_TYPE_AUDIO
  68 #define PKT_FLAG_KEY AV_PKT_FLAG_KEY
  69 #else
  70 #include <libavcodec/opt.h>
  71 #endif
  72
  73 #define MAX_AUDIO_STREAMS (8)
  74 #define AUDIO_ENCODE_BUFFER_SIZE (48000 * 2 * MAX_AUDIO_STREAMS)
  75 #define AUDIO_BUFFER_SIZE (1024 * 42)
  76 #define VIDEO_BUFFER_SIZE (2048 * 1024)
  77
  78 //
  79 // This structure should be extended and made globally available in mlt
  80 //
  81
  82 typedef struct
  83 {
  84         uint8_t *buffer;
  85         int size;
  86         int used;
  87         double time;
  88         int frequency;
  89         int channels;
  90 }
  91 *sample_fifo, sample_fifo_s;
  92
  93 sample_fifo sample_fifo_init( int frequency, int channels )
  94 {
  95         sample_fifo fifo = calloc( 1, sizeof( sample_fifo_s ) );
  96         fifo->frequency = frequency;
  97         fifo->channels = channels;
  98         return fifo;
  99 }
 100
 101 // count is the number of samples multiplied by the number of bytes per sample
 102 void sample_fifo_append( sample_fifo fifo, uint8_t *samples, int count )
 103 {
 104         if ( ( fifo->size - fifo->used ) < count )
 105         {
 106                 fifo->size += count * 5;
 107                 fifo->buffer = realloc( fifo->buffer, fifo->size );
 108         }
 109
 110         memcpy( &fifo->buffer[ fifo->used ], samples, count );
 111         fifo->used += count;
 112 }
 113
 114 int sample_fifo_used( sample_fifo fifo )
 115 {
 116         return fifo->used;
 117 }
 118
 119 int sample_fifo_fetch( sample_fifo fifo, uint8_t *samples, int count )
 120 {
 121         if ( count > fifo->used )
 122                 count = fifo->used;
 123
 124         memcpy( samples, fifo->buffer, count );
 125         fifo->used -= count;
 126         memmove( fifo->buffer, &fifo->buffer[ count ], fifo->used );
 127
 128         fifo->time += ( double )count / fifo->channels / fifo->frequency;
 129
 130         return count;
 131 }
 132
 133 void sample_fifo_close( sample_fifo fifo )
 134 {
 135         free( fifo->buffer );
 136         free( fifo );
 137 }
 138
 139 // Forward references.
 140 static int consumer_start( mlt_consumer consumer );
 141 static int consumer_stop( mlt_consumer consumer );
 142 static int consumer_is_stopped( mlt_consumer consumer );
 143 static void *consumer_thread( void *arg );
 144 static void consumer_close( mlt_consumer consumer );
 145
 146 /** Initialise the consumer.
 147 */
 148
 149 mlt_consumer consumer_avformat_init( mlt_profile profile, char *arg )
 150 {
 151         // Allocate the consumer
 152         mlt_consumer consumer = mlt_consumer_new( profile );
 153
 154         // If memory allocated and initialises without error
 155         if ( consumer != NULL )
 156         {
 157                 // Get properties from the consumer
 158                 mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 159
 160                 // Assign close callback
 161                 consumer->close = consumer_close;
 162
 163                 // Interpret the argument
 164                 if ( arg != NULL )
 165                         mlt_properties_set( properties, "target", arg );
 166
 167                 // sample and frame queue
 168                 mlt_properties_set_data( properties, "frame_queue", mlt_deque_init( ), 0, ( mlt_destructor )mlt_deque_close, NULL );
 169
 170                 // Audio options not fully handled by AVOptions
 171 #define QSCALE_NONE (-99999)
 172                 mlt_properties_set_int( properties, "aq", QSCALE_NONE );
 173
 174                 // Video options not fully handled by AVOptions
 175                 mlt_properties_set_int( properties, "dc", 8 );
 176
 177                 // Muxer options not fully handled by AVOptions
 178                 mlt_properties_set_double( properties, "muxdelay", 0.7 );
 179                 mlt_properties_set_double( properties, "muxpreload", 0.5 );
 180
 181                 // Ensure termination at end of the stream
 182                 mlt_properties_set_int( properties, "terminate_on_pause", 1 );
 183
 184                 // Default to separate processing threads for producer and consumer with no frame dropping!
 185                 mlt_properties_set_int( properties, "real_time", -1 );
 186                 mlt_properties_set_int( properties, "prefill", 1 );
 187
 188                 // Set up start/stop/terminated callbacks
 189                 consumer->start = consumer_start;
 190                 consumer->stop = consumer_stop;
 191                 consumer->is_stopped = consumer_is_stopped;
 192
 193                 mlt_events_register( properties, "consumer-fatal-error", NULL );
 194         }
 195
 196         // Return consumer
 197         return consumer;
 198 }
 199
 200 /** Start the consumer.
 201 */
 202
 203 static int consumer_start( mlt_consumer consumer )
 204 {
 205         // Get the properties
 206         mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 207         int error = 0;
 208
 209         // Report information about available muxers and codecs as YAML Tiny
 210         char *s = mlt_properties_get( properties, "f" );
 211         if ( s && strcmp( s, "list" ) == 0 )
 212         {
 213                 mlt_properties doc = mlt_properties_new();
 214                 mlt_properties formats = mlt_properties_new();
 215                 char key[20];
 216                 AVOutputFormat *format = NULL;
 217
 218                 mlt_properties_set_data( properties, "f", formats, 0, (mlt_destructor) mlt_properties_close, NULL );
 219                 mlt_properties_set_data( doc, "formats", formats, 0, NULL, NULL );
 220                 while ( ( format = av_oformat_next( format ) ) )
 221                 {
 222                         snprintf( key, sizeof(key), "%d", mlt_properties_count( formats ) );
 223                         mlt_properties_set( formats, key, format->name );
 224                 }
 225                 fprintf( stdout, "%s", mlt_properties_serialise_yaml( doc ) );
 226                 mlt_properties_close( doc );
 227                 error = 1;
 228         }
 229         s = mlt_properties_get( properties, "acodec" );
 230         if ( s && strcmp( s, "list" ) == 0 )
 231         {
 232                 mlt_properties doc = mlt_properties_new();
 233                 mlt_properties codecs = mlt_properties_new();
 234                 char key[20];
 235                 AVCodec *codec = NULL;
 236
 237                 mlt_properties_set_data( properties, "acodec", codecs, 0, (mlt_destructor) mlt_properties_close, NULL );
 238                 mlt_properties_set_data( doc, "audio_codecs", codecs, 0, NULL, NULL );
 239                 while ( ( codec = av_codec_next( codec ) ) )
 240 #if (defined(FFUDIV) && LIBAVCODEC_VERSION_INT >= ((54<<16)+(56<<8)+100)) || (LIBAVCODEC_VERSION_INT >= ((54<<16)+(27<<8)+0))
 241                         if ( codec->encode2 && codec->type == CODEC_TYPE_AUDIO )
 242 #elif LIBAVCODEC_VERSION_INT >= ((54<<16)+(0<<8)+0)
 243                         if ( ( codec->encode || codec->encode2 ) && codec->type == CODEC_TYPE_AUDIO )
 244 #else
 245                         if ( codec->encode && codec->type == CODEC_TYPE_AUDIO )
 246 #endif
 247                         {
 248                                 snprintf( key, sizeof(key), "%d", mlt_properties_count( codecs ) );
 249                                 mlt_properties_set( codecs, key, codec->name );
 250                         }
 251                 fprintf( stdout, "%s", mlt_properties_serialise_yaml( doc ) );
 252                 mlt_properties_close( doc );
 253                 error = 1;
 254         }
 255         s = mlt_properties_get( properties, "vcodec" );
 256         if ( s && strcmp( s, "list" ) == 0 )
 257         {
 258                 mlt_properties doc = mlt_properties_new();
 259                 mlt_properties codecs = mlt_properties_new();
 260                 char key[20];
 261                 AVCodec *codec = NULL;
 262
 263                 mlt_properties_set_data( properties, "vcodec", codecs, 0, (mlt_destructor) mlt_properties_close, NULL );
 264                 mlt_properties_set_data( doc, "video_codecs", codecs, 0, NULL, NULL );
 265                 while ( ( codec = av_codec_next( codec ) ) )
 266 #if (defined(FFUDIV) && LIBAVCODEC_VERSION_INT >= ((54<<16)+(56<<8)+100)) || (LIBAVCODEC_VERSION_INT >= ((54<<16)+(27<<8)+0))
 267                         if ( codec->encode2 && codec->type == CODEC_TYPE_VIDEO )
 268 #elif LIBAVCODEC_VERSION_INT >= ((54<<16)+(0<<8)+0)
 269                         if ( (codec->encode || codec->encode2) && codec->type == CODEC_TYPE_VIDEO )
 270 #else
 271                         if ( codec->encode && codec->type == CODEC_TYPE_VIDEO )
 272 #endif
 273                         {
 274                                 snprintf( key, sizeof(key), "%d", mlt_properties_count( codecs ) );
 275                                 mlt_properties_set( codecs, key, codec->name );
 276                         }
 277                 fprintf( stdout, "%s", mlt_properties_serialise_yaml( doc ) );
 278                 mlt_properties_close( doc );
 279                 error = 1;
 280         }
 281
 282         // Check that we're not already running
 283         if ( !error && !mlt_properties_get_int( properties, "running" ) )
 284         {
 285                 // Allocate a thread
 286                 pthread_t *thread = calloc( 1, sizeof( pthread_t ) );
 287
 288                 // Get the width and height
 289                 int width = mlt_properties_get_int( properties, "width" );
 290                 int height = mlt_properties_get_int( properties, "height" );
 291
 292                 // Obtain the size property
 293                 char *size = mlt_properties_get( properties, "s" );
 294
 295                 // Interpret it
 296                 if ( size != NULL )
 297                 {
 298                         int tw, th;
 299                         if ( sscanf( size, "%dx%d", &tw, &th ) == 2 && tw > 0 && th > 0 )
 300                         {
 301                                 width = tw;
 302                                 height = th;
 303                         }
 304                         else
 305                         {
 306                                 mlt_log_warning( MLT_CONSUMER_SERVICE( consumer ), "Invalid size property %s - ignoring.\n", size );
 307                         }
 308                 }
 309
 310                 // Now ensure we honour the multiple of two requested by libavformat
 311                 width = ( width / 2 ) * 2;
 312                 height = ( height / 2 ) * 2;
 313                 mlt_properties_set_int( properties, "width", width );
 314                 mlt_properties_set_int( properties, "height", height );
 315
 316                 // We need to set these on the profile as well because the s property is
 317                 // an alias to mlt properties that correspond to profile settings.
 318                 mlt_profile profile = mlt_service_profile( MLT_CONSUMER_SERVICE( consumer ) );
 319                 if ( profile )
 320                 {
 321                         profile->width = width;
 322                         profile->height = height;
 323                 }
 324
 325                 if ( mlt_properties_get( properties, "aspect" ) )
 326                 {
 327                         // "-aspect" on ffmpeg command line is display aspect ratio
 328                         double ar = mlt_properties_get_double( properties, "aspect" );
 329                         AVRational rational = av_d2q( ar, 255 );
 330
 331                         // Update the profile and properties as well since this is an alias
 332                         // for mlt properties that correspond to profile settings
 333                         mlt_properties_set_int( properties, "display_aspect_num", rational.num );
 334                         mlt_properties_set_int( properties, "display_aspect_den", rational.den );
 335                         if ( profile )
 336                         {
 337                                 profile->display_aspect_num = rational.num;
 338                                 profile->display_aspect_den = rational.den;
 339                                 mlt_properties_set_double( properties, "display_ratio", mlt_profile_dar( profile ) );
 340                         }
 341
 342                         // Now compute the sample aspect ratio
 343                         rational = av_d2q( ar * height / width, 255 );
 344
 345                         // Update the profile and properties as well since this is an alias
 346                         // for mlt properties that correspond to profile settings
 347                         mlt_properties_set_int( properties, "sample_aspect_num", rational.num );
 348                         mlt_properties_set_int( properties, "sample_aspect_den", rational.den );
 349                         if ( profile )
 350                         {
 351                                 profile->sample_aspect_num = rational.num;
 352                                 profile->sample_aspect_den = rational.den;
 353                                 mlt_properties_set_double( properties, "aspect_ratio", mlt_profile_sar( profile ) );
 354                         }
 355                 }
 356
 357                 // Handle the ffmpeg command line "-r" property for frame rate
 358                 if ( mlt_properties_get( properties, "r" ) )
 359                 {
 360                         double frame_rate = mlt_properties_get_double( properties, "r" );
 361                         AVRational rational = av_d2q( frame_rate, 255 );
 362                         mlt_properties_set_int( properties, "frame_rate_num", rational.num );
 363                         mlt_properties_set_int( properties, "frame_rate_den", rational.den );
 364                         if ( profile )
 365                         {
 366                                 profile->frame_rate_num = rational.num;
 367                                 profile->frame_rate_den = rational.den;
 368                                 mlt_properties_set_double( properties, "fps", mlt_profile_fps( profile ) );
 369                         }
 370                 }
 371
 372                 // Apply AVOptions that are synonyms for standard mlt_consumer options
 373                 if ( mlt_properties_get( properties, "ac" ) )
 374                         mlt_properties_set_int( properties, "channels", mlt_properties_get_int( properties, "ac" ) );
 375                 if ( mlt_properties_get( properties, "ar" ) )
 376                         mlt_properties_set_int( properties, "frequency", mlt_properties_get_int( properties, "ar" ) );
 377
 378                 // Assign the thread to properties
 379                 mlt_properties_set_data( properties, "thread", thread, sizeof( pthread_t ), free, NULL );
 380
 381                 // Create the thread
 382                 pthread_create( thread, NULL, consumer_thread, consumer );
 383
 384                 // Set the running state
 385                 mlt_properties_set_int( properties, "running", 1 );
 386         }
 387         return error;
 388 }
 389
 390 /** Stop the consumer.
 391 */
 392
 393 static int consumer_stop( mlt_consumer consumer )
 394 {
 395         // Get the properties
 396         mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 397         pthread_t *thread = mlt_properties_get_data( properties, "thread", NULL );
 398
 399         // Check that we're running
 400         if ( thread )
 401         {
 402                 // Stop the thread
 403                 mlt_properties_set_int( properties, "running", 0 );
 404
 405                 // Wait for termination
 406                 pthread_join( *thread, NULL );
 407
 408                 mlt_properties_set_data( properties, "thread", NULL, 0, NULL, NULL );
 409         }
 410
 411         return 0;
 412 }
 413
 414 /** Determine if the consumer is stopped.
 415 */
 416
 417 static int consumer_is_stopped( mlt_consumer consumer )
 418 {
 419         // Get the properties
 420         mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 421         return !mlt_properties_get_int( properties, "running" );
 422 }
 423
 424 /** Process properties as AVOptions and apply to AV context obj
 425 */
 426
 427 static void apply_properties( void *obj, mlt_properties properties, int flags )
 428 {
 429         int i;
 430         int count = mlt_properties_count( properties );
 431 #if LIBAVUTIL_VERSION_INT < ((51<<16)+(12<<8)+0)
 432         int alloc = 1;
 433 #endif
 434
 435         for ( i = 0; i < count; i++ )
 436         {
 437                 const char *opt_name = mlt_properties_get_name( properties, i );
 438 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(10<<8)+0)
 439                 const AVOption *opt = av_opt_find( obj, opt_name, NULL, flags, flags );
 440 #else
 441                 const AVOption *opt = av_find_opt( obj, opt_name, NULL, flags, flags );
 442 #endif
 443
 444                 // If option not found, see if it was prefixed with a or v (-vb)
 445                 if ( !opt && (
 446                         ( opt_name[0] == 'v' && ( flags & AV_OPT_FLAG_VIDEO_PARAM ) ) ||
 447                         ( opt_name[0] == 'a' && ( flags & AV_OPT_FLAG_AUDIO_PARAM ) ) ) )
 448 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(10<<8)+0)
 449                         opt = av_opt_find( obj, ++opt_name, NULL, flags, flags );
 450 #else
 451                         opt = av_find_opt( obj, ++opt_name, NULL, flags, flags );
 452 #endif
 453                 // Apply option if found
 454                 if ( opt )
 455 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(12<<8)+0)
 456                         av_opt_set( obj, opt_name, mlt_properties_get_value( properties, i), 0 );
 457 #elif LIBAVCODEC_VERSION_INT >= ((52<<16)+(7<<8)+0)
 458                         av_set_string3( obj, opt_name, mlt_properties_get_value( properties, i), alloc, NULL );
 459 #elif LIBAVCODEC_VERSION_INT >= ((51<<16)+(59<<8)+0)
 460                         av_set_string2( obj, opt_name, mlt_properties_get_value( properties, i), alloc );
 461 #else
 462                         av_set_string( obj, opt_name, mlt_properties_get_value( properties, i) );
 463 #endif
 464         }
 465 }
 466
 467 static int get_mlt_audio_format( int av_sample_fmt )
 468 {
 469         switch ( av_sample_fmt )
 470         {
 471         case AV_SAMPLE_FMT_S32:
 472                 return mlt_audio_s32le;
 473         case AV_SAMPLE_FMT_FLT:
 474                 return mlt_audio_f32le;
 475 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(17<<8)+0)
 476         case AV_SAMPLE_FMT_S32P:
 477                 return mlt_audio_s32le;
 478         case AV_SAMPLE_FMT_FLTP:
 479                 return mlt_audio_f32le;
 480 #endif
 481         default:
 482                 return mlt_audio_s16;
 483         }
 484 }
 485
 486 static int pick_sample_fmt( mlt_properties properties, AVCodec *codec )
 487 {
 488         int sample_fmt = AV_SAMPLE_FMT_S16;
 489         const char *format = mlt_properties_get( properties, "mlt_audio_format" );
 490         const int *p = codec->sample_fmts;
 491
 492         // get default av_sample_fmt from mlt_audio_format
 493         if ( format )
 494         {
 495                 if ( !strcmp( format, "s32le" ) )
 496                         sample_fmt = AV_SAMPLE_FMT_S32;
 497                 else if ( !strcmp( format, "f32le" ) )
 498                         sample_fmt = AV_SAMPLE_FMT_FLT;
 499 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(17<<8)+0)
 500                 else if ( !strcmp( format, "s32" ) )
 501                         sample_fmt = AV_SAMPLE_FMT_S32P;
 502                 else if ( !strcmp( format, "float" ) )
 503                         sample_fmt = AV_SAMPLE_FMT_FLTP;
 504 #endif
 505         }
 506         // check if codec supports our mlt_audio_format
 507         for ( ; *p != -1; p++ )
 508         {
 509                 if ( *p == sample_fmt )
 510                         return sample_fmt;
 511         }
 512         // no match - pick first one we support
 513         for ( p = codec->sample_fmts; *p != -1; p++ )
 514         {
 515                 switch (*p)
 516                 {
 517                 case AV_SAMPLE_FMT_S16:
 518                 case AV_SAMPLE_FMT_S32:
 519                 case AV_SAMPLE_FMT_FLT:
 520 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(17<<8)+0)
 521                 case AV_SAMPLE_FMT_S16P:
 522                 case AV_SAMPLE_FMT_S32P:
 523                 case AV_SAMPLE_FMT_FLTP:
 524 #endif
 525                         return *p;
 526                 default:
 527                         break;
 528                 }
 529         }
 530         mlt_log_error( properties, "audio codec sample_fmt not compatible" );
 531
 532         return AV_SAMPLE_FMT_NONE;
 533 }
 534
 535 static uint8_t* interleaved_to_planar( int samples, int channels, uint8_t* audio, int bytes_per_sample )
 536 {
 537         int size = samples * channels * bytes_per_sample;
 538         uint8_t *buffer = mlt_pool_alloc( size );
 539         uint8_t *p = buffer;
 540         int c;
 541         for ( c = 0; c < channels; c++ )
 542         {
 543                 uint8_t *q = audio + c * bytes_per_sample;
 544                 int i = samples + 1;
 545                 while ( --i )
 546                 {
 547                         memcpy( p, q, bytes_per_sample );
 548                         p += bytes_per_sample;
 549                         q += channels * bytes_per_sample;
 550                 }
 551         }
 552         return buffer;
 553 }
 554
 555 /** Add an audio output stream
 556 */
 557
 558 static AVStream *add_audio_stream( mlt_consumer consumer, AVFormatContext *oc, AVCodec *codec, int channels )
 559 {
 560         // Get the properties
 561         mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 562
 563         // Create a new stream
 564 #if LIBAVFORMAT_VERSION_INT >= ((53<<16)+(10<<8)+0)
 565         AVStream *st = avformat_new_stream( oc, codec );
 566 #else
 567         AVStream *st = av_new_stream( oc, oc->nb_streams );
 568 #endif
 569
 570         // If created, then initialise from properties
 571         if ( st != NULL )
 572         {
 573                 AVCodecContext *c = st->codec;
 574
 575                 // Establish defaults from AVOptions
 576 #if LIBAVCODEC_VERSION_MAJOR >= 53
 577                 avcodec_get_context_defaults3( c, codec );
 578 #else
 579                 avcodec_get_context_defaults2( c, CODEC_TYPE_AUDIO );
 580 #endif
 581
 582                 c->codec_id = codec->id;
 583                 c->codec_type = CODEC_TYPE_AUDIO;
 584                 c->sample_fmt = pick_sample_fmt( properties, codec );
 585
 586 #if 0 // disabled until some audio codecs are multi-threaded
 587                 // Setup multi-threading
 588                 int thread_count = mlt_properties_get_int( properties, "threads" );
 589                 if ( thread_count == 0 && getenv( "MLT_AVFORMAT_THREADS" ) )
 590                         thread_count = atoi( getenv( "MLT_AVFORMAT_THREADS" ) );
 591                 if ( thread_count > 1 )
 592                         c->thread_count = thread_count;
 593 #endif
 594
 595                 if (oc->oformat->flags & AVFMT_GLOBALHEADER)
 596                         c->flags |= CODEC_FLAG_GLOBAL_HEADER;
 597
 598                 // Allow the user to override the audio fourcc
 599                 if ( mlt_properties_get( properties, "atag" ) )
 600                 {
 601                         char *tail = NULL;
 602                         char *arg = mlt_properties_get( properties, "atag" );
 603                         int tag = strtol( arg, &tail, 0);
 604                         if( !tail || *tail )
 605                                 tag = arg[ 0 ] + ( arg[ 1 ] << 8 ) + ( arg[ 2 ] << 16 ) + ( arg[ 3 ] << 24 );
 606                         c->codec_tag = tag;
 607                 }
 608
 609                 // Process properties as AVOptions
 610                 char *apre = mlt_properties_get( properties, "apre" );
 611                 if ( apre )
 612                 {
 613                         mlt_properties p = mlt_properties_load( apre );
 614                         apply_properties( c, p, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM );
 615                         mlt_properties_close( p );
 616                 }
 617                 apply_properties( c, properties, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM );
 618
 619                 int audio_qscale = mlt_properties_get_int( properties, "aq" );
 620         if ( audio_qscale > QSCALE_NONE )
 621                 {
 622                         c->flags |= CODEC_FLAG_QSCALE;
 623                         c->global_quality = FF_QP2LAMBDA * audio_qscale;
 624 #if LIBAVFORMAT_VERSION_MAJOR < 53
 625                         st->quality = c->global_quality;
 626 #endif
 627                 }
 628
 629                 // Set parameters controlled by MLT
 630                 c->sample_rate = mlt_properties_get_int( properties, "frequency" );
 631                 c->time_base = ( AVRational ){ 1, c->sample_rate };
 632                 c->channels = channels;
 633
 634                 if ( mlt_properties_get( properties, "alang" ) != NULL )
 635 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(43<<8)+0)
 636 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(8<<8)+0)
 637                         av_dict_set( &oc->metadata, "language", mlt_properties_get( properties, "alang" ), 0 );
 638 #else
 639                         av_metadata_set2( &oc->metadata, "language", mlt_properties_get( properties, "alang" ), 0 );
 640 #endif
 641 #else
 642
 643                         strncpy( st->language, mlt_properties_get( properties, "alang" ), sizeof( st->language ) );
 644 #endif
 645         }
 646         else
 647         {
 648                 mlt_log_error( MLT_CONSUMER_SERVICE( consumer ), "Could not allocate a stream for audio\n" );
 649         }
 650
 651         return st;
 652 }
 653
 654 static int open_audio( mlt_properties properties, AVFormatContext *oc, AVStream *st, int audio_outbuf_size, const char *codec_name )
 655 {
 656         // We will return the audio input size from here
 657         int audio_input_frame_size = 0;
 658
 659         // Get the context
 660         AVCodecContext *c = st->codec;
 661
 662         // Find the encoder
 663         AVCodec *codec;
 664         if ( codec_name )
 665                 codec = avcodec_find_encoder_by_name( codec_name );
 666         else
 667                 codec = avcodec_find_encoder( c->codec_id );
 668
 669 #if LIBAVCODEC_VERSION_INT >= ((52<<16)+(122<<8)+0)
 670         // Process properties as AVOptions on the AVCodec
 671         if ( codec && codec->priv_class )
 672         {
 673                 char *apre = mlt_properties_get( properties, "apre" );
 674                 if ( !c->priv_data && codec->priv_data_size )
 675                 {
 676                         c->priv_data = av_mallocz( codec->priv_data_size );
 677                         *(const AVClass **) c->priv_data = codec->priv_class;
 678 //                      av_opt_set_defaults( c );
 679                 }
 680                 if ( apre )
 681                 {
 682                         mlt_properties p = mlt_properties_load( apre );
 683                         apply_properties( c->priv_data, p, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM );
 684                         mlt_properties_close( p );
 685                 }
 686                 apply_properties( c->priv_data, properties, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM );
 687         }
 688 #endif
 689
 690         // Continue if codec found and we can open it
 691 #if LIBAVCODEC_VERSION_INT >= ((53<<16)+(8<<8)+0)
 692         if ( codec && avcodec_open2( c, codec, NULL ) >= 0 )
 693 #else
 694         if ( codec && avcodec_open( c, codec ) >= 0 )
 695 #endif
 696         {
 697                 // ugly hack for PCM codecs (will be removed ASAP with new PCM
 698                 // support to compute the input frame size in samples
 699                 if ( c->frame_size <= 1 )
 700                 {
 701                         audio_input_frame_size = audio_outbuf_size / c->channels;
 702                         switch(st->codec->codec_id)
 703                         {
 704                                 case CODEC_ID_PCM_S16LE:
 705                                 case CODEC_ID_PCM_S16BE:
 706                                 case CODEC_ID_PCM_U16LE:
 707                                 case CODEC_ID_PCM_U16BE:
 708                                         audio_input_frame_size >>= 1;
 709                                         break;
 710                                 default:
 711                                         break;
 712                         }
 713                 }
 714                 else
 715                 {
 716                         audio_input_frame_size = c->frame_size;
 717                 }
 718
 719                 // Some formats want stream headers to be seperate (hmm)
 720                 if ( !strcmp( oc->oformat->name, "mp4" ) ||
 721                          !strcmp( oc->oformat->name, "mov" ) ||
 722                          !strcmp( oc->oformat->name, "3gp" ) )
 723                         c->flags |= CODEC_FLAG_GLOBAL_HEADER;
 724         }
 725         else
 726         {
 727                 mlt_log_warning( NULL, "%s: Unable to encode audio - disabling audio output.\n", __FILE__ );
 728                 audio_input_frame_size = 0;
 729         }
 730
 731         return audio_input_frame_size;
 732 }
 733
 734 static void close_audio( AVFormatContext *oc, AVStream *st )
 735 {
 736         if ( st && st->codec )
 737                 avcodec_close( st->codec );
 738 }
 739
 740 /** Add a video output stream
 741 */
 742
 743 static AVStream *add_video_stream( mlt_consumer consumer, AVFormatContext *oc, AVCodec *codec )
 744 {
 745         // Get the properties
 746         mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 747
 748         // Create a new stream
 749 #if LIBAVFORMAT_VERSION_INT >= ((53<<16)+(10<<8)+0)
 750         AVStream *st = avformat_new_stream( oc, codec );
 751 #else
 752         AVStream *st = av_new_stream( oc, oc->nb_streams );
 753 #endif
 754
 755         if ( st != NULL )
 756         {
 757                 char *pix_fmt = mlt_properties_get( properties, "pix_fmt" );
 758                 AVCodecContext *c = st->codec;
 759
 760                 // Establish defaults from AVOptions
 761 #if LIBAVCODEC_VERSION_MAJOR >= 53
 762                 avcodec_get_context_defaults3( c, codec );
 763 #else
 764                 avcodec_get_context_defaults2( c, CODEC_TYPE_VIDEO );
 765 #endif
 766
 767                 c->codec_id = codec->id;
 768                 c->codec_type = CODEC_TYPE_VIDEO;
 769
 770                 // Setup multi-threading
 771                 int thread_count = mlt_properties_get_int( properties, "threads" );
 772                 if ( thread_count == 0 && getenv( "MLT_AVFORMAT_THREADS" ) )
 773                         thread_count = atoi( getenv( "MLT_AVFORMAT_THREADS" ) );
 774                 if ( thread_count > 1 )
 775 #if LIBAVCODEC_VERSION_MAJOR >= 53
 776                         c->thread_count = thread_count;
 777 #else
 778                         avcodec_thread_init( c, thread_count );
 779 #endif
 780
 781                 // Process properties as AVOptions
 782                 char *vpre = mlt_properties_get( properties, "vpre" );
 783                 if ( vpre )
 784                 {
 785                         mlt_properties p = mlt_properties_load( vpre );
 786 #ifdef AVDATADIR
 787                         if ( mlt_properties_count( p ) < 1 )
 788                         {
 789                                 AVCodec *codec = avcodec_find_encoder( c->codec_id );
 790                                 if ( codec )
 791                                 {
 792                                         char *path = malloc( strlen(AVDATADIR) + strlen(codec->name) + strlen(vpre) + strlen(".ffpreset") + 2 );
 793                                         strcpy( path, AVDATADIR );
 794                                         strcat( path, codec->name );
 795                                         strcat( path, "-" );
 796                                         strcat( path, vpre );
 797                                         strcat( path, ".ffpreset" );
 798
 799                                         mlt_properties_close( p );
 800                                         p = mlt_properties_load( path );
 801                                         if ( mlt_properties_count( p ) > 0 )
 802                                                 mlt_properties_debug( p, path, stderr );
 803                                         free( path );
 804                                 }
 805                         }
 806                         else
 807                         {
 808                                 mlt_properties_debug( p, vpre, stderr );
 809                         }
 810 #endif
 811                         apply_properties( c, p, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM );
 812                         mlt_properties_close( p );
 813                 }
 814                 int colorspace = mlt_properties_get_int( properties, "colorspace" );
 815                 mlt_properties_set( properties, "colorspace", NULL );
 816                 apply_properties( c, properties, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM );
 817                 mlt_properties_set_int( properties, "colorspace", colorspace );
 818
 819                 // Set options controlled by MLT
 820                 c->width = mlt_properties_get_int( properties, "width" );
 821                 c->height = mlt_properties_get_int( properties, "height" );
 822                 c->time_base.num = mlt_properties_get_int( properties, "frame_rate_den" );
 823                 c->time_base.den = mlt_properties_get_int( properties, "frame_rate_num" );
 824                 if ( st->time_base.den == 0 )
 825                         st->time_base = c->time_base;
 826 #if LIBAVUTIL_VERSION_INT >= ((50<<16)+(8<<8)+0)
 827                 c->pix_fmt = pix_fmt ? av_get_pix_fmt( pix_fmt ) : PIX_FMT_YUV420P;
 828 #else
 829                 c->pix_fmt = pix_fmt ? avcodec_get_pix_fmt( pix_fmt ) : PIX_FMT_YUV420P;
 830 #endif
 831
 832 #if LIBAVCODEC_VERSION_INT > ((52<<16)+(28<<8)+0)
 833                 switch ( colorspace )
 834                 {
 835                 case 170:
 836                         c->colorspace = AVCOL_SPC_SMPTE170M;
 837                         break;
 838                 case 240:
 839                         c->colorspace = AVCOL_SPC_SMPTE240M;
 840                         break;
 841                 case 470:
 842                         c->colorspace = AVCOL_SPC_BT470BG;
 843                         break;
 844                 case 601:
 845                         c->colorspace = ( 576 % c->height ) ? AVCOL_SPC_SMPTE170M : AVCOL_SPC_BT470BG;
 846                         break;
 847                 case 709:
 848                         c->colorspace = AVCOL_SPC_BT709;
 849                         break;
 850                 }
 851 #endif
 852
 853                 if ( mlt_properties_get( properties, "aspect" ) )
 854                 {
 855                         // "-aspect" on ffmpeg command line is display aspect ratio
 856                         double ar = mlt_properties_get_double( properties, "aspect" );
 857                         c->sample_aspect_ratio = av_d2q( ar * c->height / c->width, 255 );
 858                 }
 859                 else
 860                 {
 861                         c->sample_aspect_ratio.num = mlt_properties_get_int( properties, "sample_aspect_num" );
 862                         c->sample_aspect_ratio.den = mlt_properties_get_int( properties, "sample_aspect_den" );
 863                 }
 864 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(21<<8)+0)
 865                 st->sample_aspect_ratio = c->sample_aspect_ratio;
 866 #endif
 867
 868                 if ( mlt_properties_get_double( properties, "qscale" ) > 0 )
 869                 {
 870                         c->flags |= CODEC_FLAG_QSCALE;
 871                         c->global_quality = FF_QP2LAMBDA * mlt_properties_get_double( properties, "qscale" );
 872 #if LIBAVFORMAT_VERSION_MAJOR < 53
 873                         st->quality = c->global_quality;
 874 #endif
 875                 }
 876
 877                 // Allow the user to override the video fourcc
 878                 if ( mlt_properties_get( properties, "vtag" ) )
 879                 {
 880                         char *tail = NULL;
 881                         const char *arg = mlt_properties_get( properties, "vtag" );
 882                         int tag = strtol( arg, &tail, 0);
 883                         if( !tail || *tail )
 884                                 tag = arg[ 0 ] + ( arg[ 1 ] << 8 ) + ( arg[ 2 ] << 16 ) + ( arg[ 3 ] << 24 );
 885                         c->codec_tag = tag;
 886                 }
 887
 888                 // Some formats want stream headers to be seperate
 889                 if ( oc->oformat->flags & AVFMT_GLOBALHEADER )
 890                         c->flags |= CODEC_FLAG_GLOBAL_HEADER;
 891
 892                 // Translate these standard mlt consumer properties to ffmpeg
 893                 if ( mlt_properties_get_int( properties, "progressive" ) == 0 &&
 894                      mlt_properties_get_int( properties, "deinterlace" ) == 0 )
 895                 {
 896                         if ( ! mlt_properties_get( properties, "ildct" ) || mlt_properties_get_int( properties, "ildct" ) )
 897                                 c->flags |= CODEC_FLAG_INTERLACED_DCT;
 898                         if ( ! mlt_properties_get( properties, "ilme" ) || mlt_properties_get_int( properties, "ilme" ) )
 899                                 c->flags |= CODEC_FLAG_INTERLACED_ME;
 900                 }
 901
 902                 // parse the ratecontrol override string
 903                 int i;
 904                 char *rc_override = mlt_properties_get( properties, "rc_override" );
 905                 for ( i = 0; rc_override; i++ )
 906                 {
 907                         int start, end, q;
 908                         int e = sscanf( rc_override, "%d,%d,%d", &start, &end, &q );
 909                         if ( e != 3 )
 910                                 mlt_log_warning( MLT_CONSUMER_SERVICE( consumer ), "Error parsing rc_override\n" );
 911                         c->rc_override = av_realloc( c->rc_override, sizeof( RcOverride ) * ( i + 1 ) );
 912                         c->rc_override[i].start_frame = start;
 913                         c->rc_override[i].end_frame = end;
 914                         if ( q > 0 )
 915                         {
 916                                 c->rc_override[i].qscale = q;
 917                                 c->rc_override[i].quality_factor = 1.0;
 918                         }
 919                         else
 920                         {
 921                                 c->rc_override[i].qscale = 0;
 922                                 c->rc_override[i].quality_factor = -q / 100.0;
 923                         }
 924                         rc_override = strchr( rc_override, '/' );
 925                         if ( rc_override )
 926                                 rc_override++;
 927                 }
 928                 c->rc_override_count = i;
 929                 if ( !c->rc_initial_buffer_occupancy )
 930                         c->rc_initial_buffer_occupancy = c->rc_buffer_size * 3/4;
 931                 c->intra_dc_precision = mlt_properties_get_int( properties, "dc" ) - 8;
 932
 933                 // Setup dual-pass
 934                 i = mlt_properties_get_int( properties, "pass" );
 935                 if ( i == 1 )
 936                         c->flags |= CODEC_FLAG_PASS1;
 937                 else if ( i == 2 )
 938                         c->flags |= CODEC_FLAG_PASS2;
 939                 if ( codec->id != CODEC_ID_H264 && ( c->flags & ( CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2 ) ) )
 940                 {
 941                         char logfilename[1024];
 942                         FILE *f;
 943                         int size;
 944                         char *logbuffer;
 945
 946                         snprintf( logfilename, sizeof(logfilename), "%s_2pass.log",
 947                                 mlt_properties_get( properties, "passlogfile" ) ? mlt_properties_get( properties, "passlogfile" ) : mlt_properties_get( properties, "target" ) );
 948                         if ( c->flags & CODEC_FLAG_PASS1 )
 949                         {
 950                                 f = fopen( logfilename, "w" );
 951                                 if ( !f )
 952                                         perror( logfilename );
 953                                 else
 954                                         mlt_properties_set_data( properties, "_logfile", f, 0, ( mlt_destructor )fclose, NULL );
 955                         }
 956                         else
 957                         {
 958                                 /* read the log file */
 959                                 f = fopen( logfilename, "r" );
 960                                 if ( !f )
 961                                 {
 962                                         perror(logfilename);
 963                                 }
 964                                 else
 965                                 {
 966                                         mlt_properties_set( properties, "_logfilename", logfilename );
 967                                         fseek( f, 0, SEEK_END );
 968                                         size = ftell( f );
 969                                         fseek( f, 0, SEEK_SET );
 970                                         logbuffer = av_malloc( size + 1 );
 971                                         if ( !logbuffer )
 972                                                 mlt_log_fatal( MLT_CONSUMER_SERVICE( consumer ), "Could not allocate log buffer\n" );
 973                                         else
 974                                         {
 975                                                 if ( size >= 0 )
 976                                                 {
 977                                                         size = fread( logbuffer, 1, size, f );
 978                                                         logbuffer[size] = '\0';
 979                                                         c->stats_in = logbuffer;
 980                                                 }
 981                                         }
 982                                         fclose( f );
 983                                 }
 984                         }
 985                 }
 986         }
 987         else
 988         {
 989                 mlt_log_error( MLT_CONSUMER_SERVICE( consumer ), "Could not allocate a stream for video\n" );
 990         }
 991
 992         return st;
 993 }
 994
 995 static AVFrame *alloc_picture( int pix_fmt, int width, int height )
 996 {
 997         // Allocate a frame
 998         AVFrame *picture = avcodec_alloc_frame();
 999
1000         // Determine size of the
1001         int size = avpicture_get_size(pix_fmt, width, height);
1002
1003         // Allocate the picture buf
1004         uint8_t *picture_buf = av_malloc(size);
1005
1006         // If we have both, then fill the image
1007         if ( picture != NULL && picture_buf != NULL )
1008         {
1009                 // Fill the frame with the allocated buffer
1010                 avpicture_fill( (AVPicture *)picture, picture_buf, pix_fmt, width, height);
1011         }
1012         else
1013         {
1014                 // Something failed - clean up what we can
1015                 av_free( picture );
1016                 av_free( picture_buf );
1017                 picture = NULL;
1018         }
1019
1020         return picture;
1021 }
1022
1023 static int open_video( mlt_properties properties, AVFormatContext *oc, AVStream *st, const char *codec_name )
1024 {
1025         // Get the codec
1026         AVCodecContext *video_enc = st->codec;
1027
1028         // find the video encoder
1029         AVCodec *codec;
1030         if ( codec_name )
1031                 codec = avcodec_find_encoder_by_name( codec_name );
1032         else
1033                 codec = avcodec_find_encoder( video_enc->codec_id );
1034
1035 #if LIBAVCODEC_VERSION_INT >= ((52<<16)+(122<<8)+0)
1036         // Process properties as AVOptions on the AVCodec
1037         if ( codec && codec->priv_class )
1038         {
1039                 char *vpre = mlt_properties_get( properties, "vpre" );
1040                 if ( !video_enc->priv_data && codec->priv_data_size )
1041                 {
1042                         video_enc->priv_data = av_mallocz( codec->priv_data_size );
1043                         *(const AVClass **) video_enc->priv_data = codec->priv_class;
1044 //                      av_opt_set_defaults( video_enc );
1045                 }
1046                 if ( vpre )
1047                 {
1048                         mlt_properties p = mlt_properties_load( vpre );
1049                         apply_properties( video_enc->priv_data, p, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM );
1050                         mlt_properties_close( p );
1051                 }
1052                 apply_properties( video_enc->priv_data, properties, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM );
1053         }
1054 #endif
1055
1056         if( codec && codec->pix_fmts )
1057         {
1058                 const enum PixelFormat *p = codec->pix_fmts;
1059                 for( ; *p!=-1; p++ )
1060                 {
1061                         if( *p == video_enc->pix_fmt )
1062                                 break;
1063                 }
1064                 if( *p == -1 )
1065                         video_enc->pix_fmt = codec->pix_fmts[ 0 ];
1066         }
1067
1068 #if LIBAVCODEC_VERSION_INT >= ((53<<16)+(8<<8)+0)
1069         int result = codec && avcodec_open2( video_enc, codec, NULL ) >= 0;
1070 #else
1071         int result = codec && avcodec_open( video_enc, codec ) >= 0;
1072 #endif
1073
1074         return result;
1075 }
1076
1077 void close_video(AVFormatContext *oc, AVStream *st)
1078 {
1079         if ( st && st->codec )
1080         {
1081                 av_freep( &st->codec->stats_in );
1082                 avcodec_close(st->codec);
1083         }
1084 }
1085
1086 static inline long time_difference( struct timeval *time1 )
1087 {
1088         struct timeval time2;
1089         gettimeofday( &time2, NULL );
1090         return time2.tv_sec * 1000000 + time2.tv_usec - time1->tv_sec * 1000000 - time1->tv_usec;
1091 }
1092
1093 static int mlt_write(void *h, uint8_t *buf, int size)
1094 {
1095         mlt_properties properties = (mlt_properties) h;
1096         mlt_events_fire( properties, "avformat-write", buf, size, NULL );
1097         return 0;
1098 }
1099
1100 static void write_transmitter( mlt_listener listener, mlt_properties owner, mlt_service service, void **args )
1101 {
1102         listener( owner, service, (uint8_t*) args[0], (int) args[1] );
1103 }
1104
1105 /** The main thread - the argument is simply the consumer.
1106 */
1107
1108 static void *consumer_thread( void *arg )
1109 {
1110         // Map the argument to the object
1111         mlt_consumer consumer = arg;
1112
1113         // Get the properties
1114         mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
1115
1116         // Get the terminate on pause property
1117         int terminate_on_pause = mlt_properties_get_int( properties, "terminate_on_pause" );
1118         int terminated = 0;
1119
1120         // Determine if feed is slow (for realtime stuff)
1121         int real_time_output = mlt_properties_get_int( properties, "real_time" );
1122
1123         // Time structures
1124         struct timeval ante;
1125
1126         // Get the frame rate
1127         double fps = mlt_properties_get_double( properties, "fps" );
1128
1129         // Get width and height
1130         int width = mlt_properties_get_int( properties, "width" );
1131         int height = mlt_properties_get_int( properties, "height" );
1132         int img_width = width;
1133         int img_height = height;
1134
1135         // Get default audio properties
1136         int channels = mlt_properties_get_int( properties, "channels" );
1137         int total_channels = channels;
1138         int frequency = mlt_properties_get_int( properties, "frequency" );
1139         void *pcm = NULL;
1140         int samples = 0;
1141
1142         // AVFormat audio buffer and frame size
1143         int audio_outbuf_size = AUDIO_BUFFER_SIZE;
1144         uint8_t *audio_outbuf = av_malloc( audio_outbuf_size );
1145         int audio_input_frame_size = 0;
1146
1147         // AVFormat video buffer and frame count
1148         int frame_count = 0;
1149         int video_outbuf_size = VIDEO_BUFFER_SIZE;
1150         uint8_t *video_outbuf = av_malloc( video_outbuf_size );
1151
1152         // Used for the frame properties
1153         mlt_frame frame = NULL;
1154         mlt_properties frame_properties = NULL;
1155
1156         // Get the queues
1157         mlt_deque queue = mlt_properties_get_data( properties, "frame_queue", NULL );
1158         sample_fifo fifo = mlt_properties_get_data( properties, "sample_fifo", NULL );
1159
1160         // Need two av pictures for converting
1161         AVFrame *output = NULL;
1162         AVFrame *input = alloc_picture( PIX_FMT_YUYV422, width, height );
1163
1164         // For receiving images from an mlt_frame
1165         uint8_t *image;
1166         mlt_image_format img_fmt = mlt_image_yuv422;
1167
1168         // For receiving audio samples back from the fifo
1169         uint8_t *audio_buf_1 = av_malloc( AUDIO_ENCODE_BUFFER_SIZE );
1170         uint8_t *audio_buf_2 = NULL;
1171         int count = 0;
1172
1173         // Allocate the context
1174 #if (LIBAVFORMAT_VERSION_INT >= ((52<<16)+(26<<8)+0))
1175         AVFormatContext *oc = avformat_alloc_context( );
1176 #else
1177         AVFormatContext *oc = av_alloc_format_context( );
1178 #endif
1179
1180         // Streams
1181         AVStream *video_st = NULL;
1182         AVStream *audio_st[ MAX_AUDIO_STREAMS ];
1183
1184         // Time stamps
1185         double audio_pts = 0;
1186         double video_pts = 0;
1187
1188         // Frames dispatched
1189         long int frames = 0;
1190         long int total_time = 0;
1191
1192         // Determine the format
1193         AVOutputFormat *fmt = NULL;
1194         const char *filename = mlt_properties_get( properties, "target" );
1195         char *format = mlt_properties_get( properties, "f" );
1196         char *vcodec = mlt_properties_get( properties, "vcodec" );
1197         char *acodec = mlt_properties_get( properties, "acodec" );
1198         AVCodec *audio_codec = NULL;
1199         AVCodec *video_codec = NULL;
1200
1201         // Used to store and override codec ids
1202         int audio_codec_id;
1203         int video_codec_id;
1204
1205         // Misc
1206         char key[27];
1207         mlt_properties frame_meta_properties = mlt_properties_new();
1208
1209         // Initialize audio_st
1210         int i = MAX_AUDIO_STREAMS;
1211         while ( i-- )
1212                 audio_st[i] = NULL;
1213
1214         // Check for user selected format first
1215         if ( format != NULL )
1216 #if LIBAVFORMAT_VERSION_INT < ((52<<16)+(45<<8)+0)
1217                 fmt = guess_format( format, NULL, NULL );
1218 #else
1219                 fmt = av_guess_format( format, NULL, NULL );
1220 #endif
1221
1222         // Otherwise check on the filename
1223         if ( fmt == NULL && filename != NULL )
1224 #if LIBAVFORMAT_VERSION_INT < ((52<<16)+(45<<8)+0)
1225                 fmt = guess_format( NULL, filename, NULL );
1226 #else
1227                 fmt = av_guess_format( NULL, filename, NULL );
1228 #endif
1229
1230         // Otherwise default to mpeg
1231         if ( fmt == NULL )
1232 #if LIBAVFORMAT_VERSION_INT < ((52<<16)+(45<<8)+0)
1233                 fmt = guess_format( "mpeg", NULL, NULL );
1234 #else
1235                 fmt = av_guess_format( "mpeg", NULL, NULL );
1236 #endif
1237
1238         // We need a filename - default to stdout?
1239         if ( filename == NULL || !strcmp( filename, "" ) )
1240                 filename = "pipe:";
1241
1242         // Get the codec ids selected
1243         audio_codec_id = fmt->audio_codec;
1244         video_codec_id = fmt->video_codec;
1245
1246         // Check for audio codec overides
1247         if ( ( acodec && strcmp( acodec, "none" ) == 0 ) || mlt_properties_get_int( properties, "an" ) )
1248                 audio_codec_id = CODEC_ID_NONE;
1249         else if ( acodec )
1250         {
1251                 audio_codec = avcodec_find_encoder_by_name( acodec );
1252                 if ( audio_codec )
1253                 {
1254                         audio_codec_id = audio_codec->id;
1255                         if ( audio_codec_id == CODEC_ID_AC3 && avcodec_find_encoder_by_name( "ac3_fixed" ) )
1256                         {
1257                                 mlt_properties_set( properties, "_acodec", "ac3_fixed" );
1258                                 acodec = mlt_properties_get( properties, "_acodec" );
1259                                 audio_codec = avcodec_find_encoder_by_name( acodec );
1260                         }
1261                         else if ( !strcmp( acodec, "aac" ) )
1262                         {
1263                                 mlt_properties_set( properties, "astrict", "experimental" );
1264                         }
1265                 }
1266                 else
1267                 {
1268                         audio_codec_id = CODEC_ID_NONE;
1269                         mlt_log_warning( MLT_CONSUMER_SERVICE( consumer ), "audio codec %s unrecognised - ignoring\n", acodec );
1270                 }
1271         }
1272         else
1273         {
1274                 audio_codec = avcodec_find_encoder( audio_codec_id );
1275         }
1276
1277         // Check for video codec overides
1278         if ( ( vcodec && strcmp( vcodec, "none" ) == 0 ) || mlt_properties_get_int( properties, "vn" ) )
1279                 video_codec_id = CODEC_ID_NONE;
1280         else if ( vcodec )
1281         {
1282                 video_codec = avcodec_find_encoder_by_name( vcodec );
1283                 if ( video_codec )
1284                 {
1285                         video_codec_id = video_codec->id;
1286                 }
1287                 else
1288                 {
1289                         video_codec_id = CODEC_ID_NONE;
1290                         mlt_log_warning( MLT_CONSUMER_SERVICE( consumer ), "video codec %s unrecognised - ignoring\n", vcodec );
1291                 }
1292         }
1293         else
1294         {
1295                 video_codec = avcodec_find_encoder( video_codec_id );
1296         }
1297
1298         // Write metadata
1299 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(31<<8)+0)
1300         for ( i = 0; i < mlt_properties_count( properties ); i++ )
1301         {
1302                 char *name = mlt_properties_get_name( properties, i );
1303                 if ( name && !strncmp( name, "meta.attr.", 10 ) )
1304                 {
1305                         char *key = strdup( name + 10 );
1306                         char *markup = strrchr( key, '.' );
1307                         if ( markup && !strcmp( markup, ".markup") )
1308                         {
1309                                 markup[0] = '\0';
1310                                 if ( !strstr( key, ".stream." ) )
1311 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(43<<8)+0)
1312 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(8<<8)+0)
1313                                         av_dict_set( &oc->metadata, key, mlt_properties_get_value( properties, i ), 0 );
1314 #else
1315                                         av_metadata_set2( &oc->metadata, key, mlt_properties_get_value( properties, i ), 0 );
1316 #endif
1317 #else
1318                                         av_metadata_set( &oc->metadata, key, mlt_properties_get_value( properties, i ) );
1319 #endif
1320                         }
1321                         free( key );
1322                 }
1323         }
1324 #else
1325         char *tmp = NULL;
1326         int metavalue;
1327
1328         tmp = mlt_properties_get( properties, "meta.attr.title.markup");
1329         if (tmp != NULL) snprintf( oc->title, sizeof(oc->title), "%s", tmp );
1330
1331         tmp = mlt_properties_get( properties, "meta.attr.comment.markup");
1332         if (tmp != NULL) snprintf( oc->comment, sizeof(oc->comment), "%s", tmp );
1333
1334         tmp = mlt_properties_get( properties, "meta.attr.author.markup");
1335         if (tmp != NULL) snprintf( oc->author, sizeof(oc->author), "%s", tmp );
1336
1337         tmp = mlt_properties_get( properties, "meta.attr.copyright.markup");
1338         if (tmp != NULL) snprintf( oc->copyright, sizeof(oc->copyright), "%s", tmp );
1339
1340         tmp = mlt_properties_get( properties, "meta.attr.album.markup");
1341         if (tmp != NULL) snprintf( oc->album, sizeof(oc->album), "%s", tmp );
1342
1343         metavalue = mlt_properties_get_int( properties, "meta.attr.year.markup");
1344         if (metavalue != 0) oc->year = metavalue;
1345
1346         metavalue = mlt_properties_get_int( properties, "meta.attr.track.markup");
1347         if (metavalue != 0) oc->track = metavalue;
1348 #endif
1349
1350         oc->oformat = fmt;
1351         snprintf( oc->filename, sizeof(oc->filename), "%s", filename );
1352
1353         // Get a frame now, so we can set some AVOptions from properties.
1354         frame = mlt_consumer_rt_frame( consumer );
1355
1356         // Set the timecode from the MLT metadata if available.
1357     if ( frame )
1358     {
1359         const char *timecode = mlt_properties_get( MLT_FRAME_PROPERTIES(frame), "meta.attr.vitc.markup" );
1360         if ( timecode && strcmp( timecode, "" ) )
1361         {
1362             mlt_properties_set( properties, "timecode", timecode );
1363             if ( strchr( timecode, ';' ) )
1364                 mlt_properties_set_int( properties, "drop_frame_timecode", 1 );
1365         }
1366     }
1367
1368         // Add audio and video streams
1369         if ( video_codec_id != CODEC_ID_NONE )
1370                 video_st = add_video_stream( consumer, oc, video_codec );
1371         if ( audio_codec_id != CODEC_ID_NONE )
1372         {
1373                 int is_multi = 0;
1374
1375                 total_channels = 0;
1376                 // multitrack audio
1377                 for ( i = 0; i < MAX_AUDIO_STREAMS; i++ )
1378                 {
1379                         sprintf( key, "channels.%d", i );
1380                         int j = mlt_properties_get_int( properties, key );
1381                         if ( j )
1382                         {
1383                                 is_multi = 1;
1384                                 total_channels += j;
1385                                 audio_st[i] = add_audio_stream( consumer, oc, audio_codec, j );
1386                         }
1387                 }
1388                 // single track
1389                 if ( !is_multi )
1390                 {
1391                         audio_st[0] = add_audio_stream( consumer, oc, audio_codec, channels );
1392                         total_channels = channels;
1393                 }
1394         }
1395         mlt_properties_set_int( properties, "channels", total_channels );
1396
1397         // Audio format is determined when adding the audio stream
1398         mlt_audio_format aud_fmt = mlt_audio_none;
1399         if ( audio_st[0] )
1400                 aud_fmt = get_mlt_audio_format( audio_st[0]->codec->sample_fmt );
1401         int sample_bytes = mlt_audio_format_size( aud_fmt, 1, 1 );
1402         sample_bytes = sample_bytes ? sample_bytes : 1; // prevent divide by zero
1403
1404         // Set the parameters (even though we have none...)
1405 #if LIBAVFORMAT_VERSION_INT < ((53<<16)+(2<<8)+0)
1406         if ( av_set_parameters(oc, NULL) >= 0 )
1407 #endif
1408         {
1409 #if LIBAVFORMAT_VERSION_MAJOR >= 53
1410                 if ( mlt_properties_get( properties, "muxpreload" ) && ! mlt_properties_get( properties, "preload" ) )
1411                         mlt_properties_set_double( properties, "preload", mlt_properties_get_double( properties, "muxpreload" ) );
1412 #else
1413                 oc->preload = ( int )( mlt_properties_get_double( properties, "muxpreload" ) * AV_TIME_BASE );
1414 #endif
1415                 oc->max_delay= ( int )( mlt_properties_get_double( properties, "muxdelay" ) * AV_TIME_BASE );
1416
1417                 // Process properties as AVOptions
1418                 char *fpre = mlt_properties_get( properties, "fpre" );
1419                 if ( fpre )
1420                 {
1421                         mlt_properties p = mlt_properties_load( fpre );
1422                         apply_properties( oc, p, AV_OPT_FLAG_ENCODING_PARAM );
1423 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(110<<8)+0)
1424                         if ( oc->oformat && oc->oformat->priv_class && oc->priv_data )
1425                                 apply_properties( oc->priv_data, p, AV_OPT_FLAG_ENCODING_PARAM );
1426 #endif
1427                         mlt_properties_close( p );
1428                 }
1429                 apply_properties( oc, properties, AV_OPT_FLAG_ENCODING_PARAM );
1430 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(110<<8)+0)
1431                 if ( oc->oformat && oc->oformat->priv_class && oc->priv_data )
1432                         apply_properties( oc->priv_data, properties, AV_OPT_FLAG_ENCODING_PARAM );
1433 #endif
1434
1435                 if ( video_st && !open_video( properties, oc, video_st, vcodec? vcodec : NULL ) )
1436                         video_st = NULL;
1437                 for ( i = 0; i < MAX_AUDIO_STREAMS && audio_st[i]; i++ )
1438                 {
1439                         audio_input_frame_size = open_audio( properties, oc, audio_st[i], audio_outbuf_size,
1440                                 acodec? acodec : NULL );
1441                         if ( !audio_input_frame_size )
1442                         {
1443                                 // Remove the audio stream from the output context
1444                                 int j;
1445                                 for ( j = 0; j < oc->nb_streams; j++ )
1446                                 {
1447                                         if ( oc->streams[j] == audio_st[i] )
1448                                                 av_freep( &oc->streams[j] );
1449                                 }
1450                                 --oc->nb_streams;
1451                                 audio_st[i] = NULL;
1452                         }
1453                 }
1454
1455                 // Setup custom I/O if redirecting
1456                 if ( mlt_properties_get_int( properties, "redirect" ) )
1457                 {
1458                         int buffer_size = 32768;
1459                         unsigned char *buffer = av_malloc( buffer_size );
1460 #if LIBAVFORMAT_VERSION_MAJOR >= 53
1461                         AVIOContext* io = avio_alloc_context( buffer, buffer_size, 1, properties, NULL, mlt_write, NULL );
1462 #else
1463                         ByteIOContext* io = av_alloc_put_byte( buffer, buffer_size, 1, properties, NULL, mlt_write, NULL );
1464 #endif
1465                         if ( buffer && io )
1466                         {
1467                                 oc->pb = io;
1468 #if LIBAVFORMAT_VERSION_MAJOR >= 53
1469                                 oc->flags |= AVFMT_FLAG_CUSTOM_IO;
1470 #endif
1471                                 mlt_properties_set_data( properties, "avio_buffer", buffer, buffer_size, av_free, NULL );
1472                                 mlt_properties_set_data( properties, "avio_context", io, 0, av_free, NULL );
1473                                 mlt_events_register( properties, "avformat-write", (mlt_transmitter) write_transmitter );
1474                         }
1475                         else
1476                         {
1477                                 av_free( buffer );
1478                                 mlt_log_error( MLT_CONSUMER_SERVICE(consumer), "failed to setup output redirection\n" );
1479                         }
1480                 }
1481                 // Open the output file, if needed
1482                 else if ( !( fmt->flags & AVFMT_NOFILE ) )
1483                 {
1484 #if LIBAVFORMAT_VERSION_MAJOR >= 53
1485                         if ( avio_open( &oc->pb, filename, AVIO_FLAG_WRITE ) < 0 )
1486 #else
1487                         if ( url_fopen( &oc->pb, filename, URL_WRONLY ) < 0 )
1488 #endif
1489                         {
1490                                 mlt_log_error( MLT_CONSUMER_SERVICE( consumer ), "Could not open '%s'\n", filename );
1491                                 mlt_events_fire( properties, "consumer-fatal-error", NULL );
1492                                 goto on_fatal_error;
1493                         }
1494                 }
1495
1496                 // Write the stream header.
1497                 if ( mlt_properties_get_int( properties, "running" ) )
1498 #if LIBAVFORMAT_VERSION_INT >= ((53<<16)+(2<<8)+0)
1499                         avformat_write_header( oc, NULL );
1500 #else
1501                         av_write_header( oc );
1502 #endif
1503         }
1504 #if LIBAVFORMAT_VERSION_INT < ((53<<16)+(2<<8)+0)
1505         else
1506         {
1507                 mlt_log_error( MLT_CONSUMER_SERVICE( consumer ), "Invalid output format parameters\n" );
1508                 mlt_events_fire( properties, "consumer-fatal-error", NULL );
1509                 goto on_fatal_error;
1510         }
1511 #endif
1512
1513         // Allocate picture
1514         if ( video_st )
1515                 output = alloc_picture( video_st->codec->pix_fmt, width, height );
1516
1517         // Last check - need at least one stream
1518         if ( !audio_st[0] && !video_st )
1519         {
1520                 mlt_events_fire( properties, "consumer-fatal-error", NULL );
1521                 goto on_fatal_error;
1522         }
1523
1524         // Get the starting time (can ignore the times above)
1525         gettimeofday( &ante, NULL );
1526
1527         // Loop while running
1528         while( mlt_properties_get_int( properties, "running" ) &&
1529                ( !terminated || ( video_st && mlt_deque_count( queue ) ) ) )
1530         {
1531                 if ( !frame )
1532                         frame = mlt_consumer_rt_frame( consumer );
1533
1534                 // Check that we have a frame to work with
1535                 if ( frame != NULL )
1536                 {
1537                         // Increment frames dispatched
1538                         frames ++;
1539
1540                         // Default audio args
1541                         frame_properties = MLT_FRAME_PROPERTIES( frame );
1542
1543                         // Check for the terminated condition
1544                         terminated = terminate_on_pause && mlt_properties_get_double( frame_properties, "_speed" ) == 0.0;
1545
1546                         // Get audio and append to the fifo
1547                         if ( !terminated && audio_st[0] )
1548                         {
1549                                 samples = mlt_sample_calculator( fps, frequency, count ++ );
1550                                 channels = total_channels;
1551                                 mlt_frame_get_audio( frame, &pcm, &aud_fmt, &frequency, &channels, &samples );
1552
1553                                 // Save the audio channel remap properties for later
1554                                 mlt_properties_pass( frame_meta_properties, frame_properties, "meta.map.audio." );
1555
1556                                 // Create the fifo if we don't have one
1557                                 if ( fifo == NULL )
1558                                 {
1559                                         fifo = sample_fifo_init( frequency, channels );
1560                                         mlt_properties_set_data( properties, "sample_fifo", fifo, 0, ( mlt_destructor )sample_fifo_close, NULL );
1561                                 }
1562                                 if ( pcm )
1563                                 {
1564                                         // Silence if not normal forward speed
1565                                         if ( mlt_properties_get_double( frame_properties, "_speed" ) != 1.0 )
1566                                                 memset( pcm, 0, samples * channels * sample_bytes );
1567
1568                                         // Append the samples
1569                                         sample_fifo_append( fifo, pcm, samples * channels * sample_bytes );
1570                                         total_time += ( samples * 1000000 ) / frequency;
1571                                 }
1572                                 if ( !video_st )
1573                                         mlt_events_fire( properties, "consumer-frame-show", frame, NULL );
1574                         }
1575
1576                         // Encode the image
1577                         if ( !terminated && video_st )
1578                                 mlt_deque_push_back( queue, frame );
1579                         else
1580                                 mlt_frame_close( frame );
1581                         frame = NULL;
1582                 }
1583
1584                 // While we have stuff to process, process...
1585                 while ( 1 )
1586                 {
1587                         // Write interleaved audio and video frames
1588                         if ( !video_st || ( video_st && audio_st[0] && audio_pts < video_pts ) )
1589                         {
1590                                 // Write audio
1591                                 if ( ( video_st && terminated ) || ( channels * audio_input_frame_size ) < sample_fifo_used( fifo ) / sample_bytes )
1592                                 {
1593                                         int j = 0; // channel offset into interleaved source buffer
1594                                         int n = FFMIN( FFMIN( channels * audio_input_frame_size, sample_fifo_used( fifo ) / sample_bytes ), AUDIO_ENCODE_BUFFER_SIZE );
1595
1596                                         // Get the audio samples
1597                                         if ( n > 0 )
1598                                         {
1599                                                 sample_fifo_fetch( fifo, audio_buf_1, n * sample_bytes );
1600                                         }
1601                                         else if ( audio_codec_id == CODEC_ID_VORBIS && terminated )
1602                                         {
1603                                                 // This prevents an infinite loop when some versions of vorbis do not
1604                                                 // increment pts when encoding silence.
1605                                                 audio_pts = video_pts;
1606                                                 break;
1607                                         }
1608                                         else
1609                                         {
1610                                                 memset( audio_buf_1, 0, AUDIO_ENCODE_BUFFER_SIZE );
1611                                         }
1612                                         samples = n / channels;
1613
1614                                         // For each output stream
1615                                         for ( i = 0; i < MAX_AUDIO_STREAMS && audio_st[i] && j < total_channels; i++ )
1616                                         {
1617                                                 AVStream *stream = audio_st[i];
1618                                                 AVCodecContext *codec = stream->codec;
1619                                                 AVPacket pkt;
1620
1621                                                 av_init_packet( &pkt );
1622
1623                                                 // Optimized for single track and no channel remap
1624                                                 if ( !audio_st[1] && !mlt_properties_count( frame_meta_properties ) )
1625                                                 {
1626                                                         void* p = audio_buf_1;
1627 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(17<<8)+0)
1628                                                         if ( codec->sample_fmt == AV_SAMPLE_FMT_FLTP )
1629                                                                 p = interleaved_to_planar( samples, channels, p, sizeof( float ) );
1630                                                         else if ( codec->sample_fmt == AV_SAMPLE_FMT_S16P )
1631                                                                 p = interleaved_to_planar( samples, channels, p, sizeof( int16_t ) );
1632                                                         else if ( codec->sample_fmt == AV_SAMPLE_FMT_S32P )
1633                                                                 p = interleaved_to_planar( samples, channels, p, sizeof( int32_t ) );
1634 #endif
1635                                                         pkt.size = avcodec_encode_audio( codec, audio_outbuf, audio_outbuf_size, p );
1636
1637 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(17<<8)+0)
1638                                                         if ( codec->sample_fmt == AV_SAMPLE_FMT_FLTP
1639                                                              || codec->sample_fmt == AV_SAMPLE_FMT_S16P
1640                                                              || codec->sample_fmt == AV_SAMPLE_FMT_S32P )
1641                                                                 mlt_pool_release( p );
1642 #endif
1643                                                 }
1644                                                 else
1645                                                 {
1646                                                         // Extract the audio channels according to channel mapping
1647                                                         int dest_offset = 0; // channel offset into interleaved dest buffer
1648
1649                                                         // Get the number of channels for this stream
1650                                                         sprintf( key, "channels.%d", i );
1651                                                         int current_channels = mlt_properties_get_int( properties, key );
1652
1653                                                         // Clear the destination audio buffer.
1654                                                         if ( !audio_buf_2 )
1655                                                                 audio_buf_2 = av_mallocz( AUDIO_ENCODE_BUFFER_SIZE );
1656                                                         else
1657                                                                 memset( audio_buf_2, 0, AUDIO_ENCODE_BUFFER_SIZE );
1658
1659                                                         // For each output channel
1660                                                         while ( dest_offset < current_channels && j < total_channels )
1661                                                         {
1662                                                                 int map_start = -1, map_channels = 0;
1663                                                                 int source_offset = 0;
1664                                                                 int k;
1665
1666                                                                 // Look for a mapping that starts at j
1667                                                                 for ( k = 0; k < (MAX_AUDIO_STREAMS * 2) && map_start != j; k++ )
1668                                                                 {
1669                                                                         sprintf( key, "%d.channels", k );
1670                                                                         map_channels = mlt_properties_get_int( frame_meta_properties, key );
1671                                                                         sprintf( key, "%d.start", k );
1672                                                                         if ( mlt_properties_get( frame_meta_properties, key ) )
1673                                                                                 map_start = mlt_properties_get_int( frame_meta_properties, key );
1674                                                                         if ( map_start != j )
1675                                                                                 source_offset += map_channels;
1676                                                                 }
1677
1678                                                                 // If no mapping
1679                                                                 if ( map_start != j )
1680                                                                 {
1681                                                                         map_channels = current_channels;
1682                                                                         source_offset = j;
1683                                                                 }
1684
1685                                                                 // Copy samples if source offset valid
1686                                                                 if ( source_offset < channels )
1687                                                                 {
1688                                                                         // Interleave the audio buffer with the # channels for this stream/mapping.
1689                                                                         for ( k = 0; k < map_channels; k++, j++, source_offset++, dest_offset++ )
1690                                                                         {
1691                                                                                 void *src = audio_buf_1 + source_offset * sample_bytes;
1692                                                                                 void *dest = audio_buf_2 + dest_offset * sample_bytes;
1693                                                                                 int s = samples + 1;
1694
1695                                                                                 while ( --s ) {
1696                                                                                         memcpy( dest, src, sample_bytes );
1697                                                                                         dest += current_channels * sample_bytes;
1698                                                                                         src += channels * sample_bytes;
1699                                                                                 }
1700                                                                         }
1701                                                                 }
1702                                                                 // Otherwise silence
1703                                                                 else
1704                                                                 {
1705                                                                         j += current_channels;
1706                                                                         dest_offset += current_channels;
1707                                                                 }
1708                                                         }
1709                                                         pkt.size = avcodec_encode_audio( codec, audio_outbuf, audio_outbuf_size, (short*) audio_buf_2 );
1710                                                 }
1711
1712                                                 // Write the compressed frame in the media file
1713                                                 if ( codec->coded_frame && codec->coded_frame->pts != AV_NOPTS_VALUE )
1714                                                 {
1715                                                         pkt.pts = av_rescale_q( codec->coded_frame->pts, codec->time_base, stream->time_base );
1716                                                         mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), "audio stream %d pkt pts %"PRId64" frame pts %"PRId64,
1717                                                                 stream->index, pkt.pts, codec->coded_frame->pts );
1718                                                 }
1719                                                 pkt.flags |= PKT_FLAG_KEY;
1720                                                 pkt.stream_index = stream->index;
1721                                                 pkt.data = audio_outbuf;
1722
1723                                                 if ( pkt.size > 0 )
1724                                                 {
1725                                                         if ( av_interleaved_write_frame( oc, &pkt ) )
1726                                                         {
1727                                                                 mlt_log_fatal( MLT_CONSUMER_SERVICE( consumer ), "error writing audio frame\n" );
1728                                                                 mlt_events_fire( properties, "consumer-fatal-error", NULL );
1729                                                                 goto on_fatal_error;
1730                                                         }
1731                                                 }
1732
1733                                                 mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), " frame_size %d\n", codec->frame_size );
1734                                                 if ( i == 0 )
1735                                                 {
1736                                                         audio_pts = (double)stream->pts.val * av_q2d( stream->time_base );
1737                                                 }
1738                                         }
1739                                 }
1740                                 else
1741                                 {
1742                                         break;
1743                                 }
1744                         }
1745                         else if ( video_st )
1746                         {
1747                                 // Write video
1748                                 if ( mlt_deque_count( queue ) )
1749                                 {
1750                                         int out_size, ret = 0;
1751                                         AVCodecContext *c;
1752
1753                                         frame = mlt_deque_pop_front( queue );
1754                                         frame_properties = MLT_FRAME_PROPERTIES( frame );
1755
1756                                         c = video_st->codec;
1757
1758                                         if ( mlt_properties_get_int( frame_properties, "rendered" ) )
1759                                         {
1760                                                 int i = 0;
1761                                                 uint8_t *p;
1762                                                 uint8_t *q;
1763
1764                                                 mlt_frame_get_image( frame, &image, &img_fmt, &img_width, &img_height, 0 );
1765
1766                                                 q = image;
1767
1768                                                 // Convert the mlt frame to an AVPicture
1769                                                 for ( i = 0; i < height; i ++ )
1770                                                 {
1771                                                         p = input->data[ 0 ] + i * input->linesize[ 0 ];
1772                                                         memcpy( p, q, width * 2 );
1773                                                         q += width * 2;
1774                                                 }
1775
1776                                                 // Do the colour space conversion
1777 #ifdef SWSCALE
1778                                                 int flags = SWS_BICUBIC;
1779 #ifdef USE_MMX
1780                                                 flags |= SWS_CPU_CAPS_MMX;
1781 #endif
1782 #ifdef USE_SSE
1783                                                 flags |= SWS_CPU_CAPS_MMX2;
1784 #endif
1785                                                 struct SwsContext *context = sws_getContext( width, height, PIX_FMT_YUYV422,
1786                                                         width, height, video_st->codec->pix_fmt, flags, NULL, NULL, NULL);
1787                                                 sws_scale( context, (const uint8_t* const*) input->data, input->linesize, 0, height,
1788                                                         output->data, output->linesize);
1789                                                 sws_freeContext( context );
1790 #else
1791                                                 img_convert( ( AVPicture * )output, video_st->codec->pix_fmt, ( AVPicture * )input, PIX_FMT_YUYV422, width, height );
1792 #endif
1793
1794                                                 mlt_events_fire( properties, "consumer-frame-show", frame, NULL );
1795
1796                                                 // Apply the alpha if applicable
1797                                                 if ( video_st->codec->pix_fmt == PIX_FMT_RGB32 )
1798                                                 {
1799                                                         uint8_t *alpha = mlt_frame_get_alpha_mask( frame );
1800                                                         register int n;
1801
1802                                                         for ( i = 0; i < height; i ++ )
1803                                                         {
1804                                                                 n = ( width + 7 ) / 8;
1805                                                                 p = output->data[ 0 ] + i * output->linesize[ 0 ] + 3;
1806
1807                                                                 switch( width % 8 )
1808                                                                 {
1809                                                                         case 0: do { *p = *alpha++; p += 4;
1810                                                                         case 7:          *p = *alpha++; p += 4;
1811                                                                         case 6:          *p = *alpha++; p += 4;
1812                                                                         case 5:          *p = *alpha++; p += 4;
1813                                                                         case 4:          *p = *alpha++; p += 4;
1814                                                                         case 3:          *p = *alpha++; p += 4;
1815                                                                         case 2:          *p = *alpha++; p += 4;
1816                                                                         case 1:          *p = *alpha++; p += 4;
1817                                                                                         }
1818                                                                                         while( --n );
1819                                                                 }
1820                                                         }
1821                                                 }
1822                                         }
1823
1824                                         if (oc->oformat->flags & AVFMT_RAWPICTURE)
1825                                         {
1826                                                 // raw video case. The API will change slightly in the near future for that
1827                                                 AVPacket pkt;
1828                                                 av_init_packet(&pkt);
1829
1830                                                 pkt.flags |= PKT_FLAG_KEY;
1831                                                 pkt.stream_index= video_st->index;
1832                                                 pkt.data= (uint8_t *)output;
1833                                                 pkt.size= sizeof(AVPicture);
1834
1835                                                 ret = av_write_frame(oc, &pkt);
1836                                                 video_pts += c->frame_size;
1837                                         }
1838                                         else
1839                                         {
1840                                                 // Set the quality
1841                                                 output->quality = c->global_quality;
1842
1843                                                 // Set frame interlace hints
1844                                                 output->interlaced_frame = !mlt_properties_get_int( frame_properties, "progressive" );
1845                                                 output->top_field_first = mlt_properties_get_int( frame_properties, "top_field_first" );
1846                                                 output->pts = frame_count;
1847
1848                                                 // Encode the image
1849                                                 out_size = avcodec_encode_video(c, video_outbuf, video_outbuf_size, output );
1850
1851                                                 // If zero size, it means the image was buffered
1852                                                 if ( out_size > 0 )
1853                                                 {
1854                                                         AVPacket pkt;
1855                                                         av_init_packet( &pkt );
1856
1857                                                         if ( c->coded_frame && c->coded_frame->pts != AV_NOPTS_VALUE )
1858                                                                 pkt.pts= av_rescale_q( c->coded_frame->pts, c->time_base, video_st->time_base );
1859                                                         mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), "video pkt pts %"PRId64" frame pts %"PRId64, pkt.pts, c->coded_frame->pts );
1860                                                         if( c->coded_frame && c->coded_frame->key_frame )
1861                                                                 pkt.flags |= PKT_FLAG_KEY;
1862                                                         pkt.stream_index= video_st->index;
1863                                                         pkt.data= video_outbuf;
1864                                                         pkt.size= out_size;
1865
1866                                                         // write the compressed frame in the media file
1867                                                         ret = av_interleaved_write_frame(oc, &pkt);
1868                                                         mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), " frame_size %d\n", c->frame_size );
1869                                                         video_pts = (double)video_st->pts.val * av_q2d( video_st->time_base );
1870
1871                                                         // Dual pass logging
1872                                                         if ( mlt_properties_get_data( properties, "_logfile", NULL ) && c->stats_out )
1873                                                                 fprintf( mlt_properties_get_data( properties, "_logfile", NULL ), "%s", c->stats_out );
1874                                                 }
1875                                                 else if ( out_size < 0 )
1876                                                 {
1877                                                         mlt_log_warning( MLT_CONSUMER_SERVICE( consumer ), "error with video encode %d\n", frame_count );
1878                                                 }
1879                                         }
1880                                         frame_count++;
1881                                         if ( ret )
1882                                         {
1883                                                 mlt_log_fatal( MLT_CONSUMER_SERVICE( consumer ), "error writing video frame\n" );
1884                                                 mlt_events_fire( properties, "consumer-fatal-error", NULL );
1885                                                 goto on_fatal_error;
1886                                         }
1887                                         mlt_frame_close( frame );
1888                                         frame = NULL;
1889                                 }
1890                                 else
1891                                 {
1892                                         break;
1893                                 }
1894                         }
1895                         if ( audio_st[0] )
1896                                 mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), "audio pts %"PRId64" (%f) ", audio_st[0]->pts.val, audio_pts );
1897                         if ( video_st )
1898                                 mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), "video pts %"PRId64" (%f) ", video_st->pts.val, video_pts );
1899                         mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), "\n" );
1900                 }
1901
1902                 if ( real_time_output == 1 && frames % 2 == 0 )
1903                 {
1904                         long passed = time_difference( &ante );
1905                         if ( fifo != NULL )
1906                         {
1907                                 long pending = ( ( ( long )sample_fifo_used( fifo ) / sample_bytes * 1000 ) / frequency ) * 1000;
1908                                 passed -= pending;
1909                         }
1910                         if ( passed < total_time )
1911                         {
1912                                 long total = ( total_time - passed );
1913                                 struct timespec t = { total / 1000000, ( total % 1000000 ) * 1000 };
1914                                 nanosleep( &t, NULL );
1915                         }
1916                 }
1917         }
1918
1919         // Flush the encoder buffers
1920         if ( real_time_output <= 0 )
1921         {
1922                 // Flush audio fifo
1923                 // TODO: flush all audio streams
1924                 if ( audio_st[0] && audio_st[0]->codec->frame_size > 1 ) for (;;)
1925                 {
1926                         AVCodecContext *c = audio_st[0]->codec;
1927                         AVPacket pkt;
1928                         av_init_packet( &pkt );
1929                         pkt.size = 0;
1930
1931                         if ( fifo &&
1932                                 ( channels * audio_input_frame_size < sample_fifo_used( fifo ) / sample_bytes ) )
1933                         {
1934                                 sample_fifo_fetch( fifo, audio_buf_1, channels * audio_input_frame_size * sample_bytes );
1935                                 void* p = audio_buf_1;
1936 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(17<<8)+0)
1937                                 if ( c->sample_fmt == AV_SAMPLE_FMT_FLTP )
1938                                         p = interleaved_to_planar( audio_input_frame_size, channels, p, sizeof( float ) );
1939                                 else if ( c->sample_fmt == AV_SAMPLE_FMT_S16P )
1940                                         p = interleaved_to_planar( audio_input_frame_size, channels, p, sizeof( int16_t ) );
1941                                 else if ( c->sample_fmt == AV_SAMPLE_FMT_S32P )
1942                                         p = interleaved_to_planar( audio_input_frame_size, channels, p, sizeof( int32_t ) );
1943 #endif
1944                                 pkt.size = avcodec_encode_audio( c, audio_outbuf, audio_outbuf_size, p );
1945 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(17<<8)+0)
1946                                 if ( c->sample_fmt == AV_SAMPLE_FMT_FLTP
1947                                      || c->sample_fmt == AV_SAMPLE_FMT_S16P
1948                                      || c->sample_fmt == AV_SAMPLE_FMT_S32P )
1949                                         mlt_pool_release( p );
1950 #endif
1951                         }
1952                         if ( pkt.size <= 0 )
1953                                 pkt.size = avcodec_encode_audio( c, audio_outbuf, audio_outbuf_size, NULL );
1954                         mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), "flushing audio size %d\n", pkt.size );
1955                         if ( pkt.size <= 0 )
1956                                 break;
1957
1958                         // Write the compressed frame in the media file
1959                         if ( c->coded_frame && c->coded_frame->pts != AV_NOPTS_VALUE )
1960                                 pkt.pts = av_rescale_q( c->coded_frame->pts, c->time_base, audio_st[0]->time_base );
1961                         pkt.flags |= PKT_FLAG_KEY;
1962                         pkt.stream_index = audio_st[0]->index;
1963                         pkt.data = audio_outbuf;
1964                         if ( av_interleaved_write_frame( oc, &pkt ) != 0 )
1965                         {
1966                                 mlt_log_fatal( MLT_CONSUMER_SERVICE( consumer ), "error writing flushed audio frame\n" );
1967                                 mlt_events_fire( properties, "consumer-fatal-error", NULL );
1968                                 goto on_fatal_error;
1969                         }
1970                 }
1971
1972                 // Flush video
1973                 if ( video_st && !( oc->oformat->flags & AVFMT_RAWPICTURE ) ) for (;;)
1974                 {
1975                         AVCodecContext *c = video_st->codec;
1976                         AVPacket pkt;
1977                         av_init_packet( &pkt );
1978
1979                         // Encode the image
1980                         pkt.size = avcodec_encode_video( c, video_outbuf, video_outbuf_size, NULL );
1981                         mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), "flushing video size %d\n", pkt.size );
1982                         if ( pkt.size <= 0 )
1983                                 break;
1984
1985                         if ( c->coded_frame && c->coded_frame->pts != AV_NOPTS_VALUE )
1986                                 pkt.pts= av_rescale_q( c->coded_frame->pts, c->time_base, video_st->time_base );
1987                         if( c->coded_frame && c->coded_frame->key_frame )
1988                                 pkt.flags |= PKT_FLAG_KEY;
1989                         pkt.stream_index = video_st->index;
1990                         pkt.data = video_outbuf;
1991
1992                         // write the compressed frame in the media file
1993                         if ( av_interleaved_write_frame( oc, &pkt ) != 0 )
1994                         {
1995                                 mlt_log_fatal( MLT_CONSUMER_SERVICE(consumer), "error writing flushed video frame\n" );
1996                                 mlt_events_fire( properties, "consumer-fatal-error", NULL );
1997                                 goto on_fatal_error;
1998                         }
1999                         // Dual pass logging
2000                         if ( mlt_properties_get_data( properties, "_logfile", NULL ) && c->stats_out )
2001                                 fprintf( mlt_properties_get_data( properties, "_logfile", NULL ), "%s", c->stats_out );
2002                 }
2003         }
2004
2005 on_fatal_error:
2006
2007         // Write the trailer, if any
2008         if ( frames )
2009                 av_write_trailer( oc );
2010
2011         // close each codec
2012         if ( video_st )
2013                 close_video(oc, video_st);
2014         for ( i = 0; i < MAX_AUDIO_STREAMS && audio_st[i]; i++ )
2015                 close_audio( oc, audio_st[i] );
2016
2017         // Free the streams
2018         for ( i = 0; i < oc->nb_streams; i++ )
2019                 av_freep( &oc->streams[i] );
2020
2021         // Close the output file
2022         if ( !( fmt->flags & AVFMT_NOFILE ) &&
2023                 !mlt_properties_get_int( properties, "redirect" ) )
2024         {
2025 #if LIBAVFORMAT_VERSION_MAJOR >= 53
2026                 if ( oc->pb  ) avio_close( oc->pb );
2027 #elif LIBAVFORMAT_VERSION_MAJOR >= 52
2028                 if ( oc->pb  ) url_fclose( oc->pb );
2029 #else
2030                 url_fclose( &oc->pb );
2031 #endif
2032         }
2033
2034         // Clean up input and output frames
2035         if ( output )
2036                 av_free( output->data[0] );
2037         av_free( output );
2038         av_free( input->data[0] );
2039         av_free( input );
2040         av_free( video_outbuf );
2041         av_free( audio_buf_1 );
2042         av_free( audio_buf_2 );
2043
2044         // Free the stream
2045         av_free( oc );
2046
2047         // Just in case we terminated on pause
2048         mlt_consumer_stopped( consumer );
2049         mlt_properties_close( frame_meta_properties );
2050
2051         if ( mlt_properties_get_int( properties, "pass" ) > 1 )
2052         {
2053                 // Remove the dual pass log file
2054                 if ( mlt_properties_get( properties, "_logfilename" ) )
2055                         remove( mlt_properties_get( properties, "_logfilename" ) );
2056
2057                 // Remove the x264 dual pass logs
2058                 char *cwd = getcwd( NULL, 0 );
2059                 const char *file = "x264_2pass.log";
2060                 char *full = malloc( strlen( cwd ) + strlen( file ) + 2 );
2061                 sprintf( full, "%s/%s", cwd, file );
2062                 remove( full );
2063                 free( full );
2064                 file = "x264_2pass.log.temp";
2065                 full = malloc( strlen( cwd ) + strlen( file ) + 2 );
2066                 sprintf( full, "%s/%s", cwd, file );
2067                 remove( full );
2068                 free( full );
2069                 file = "x264_2pass.log.mbtree";
2070                 full = malloc( strlen( cwd ) + strlen( file ) + 2 );
2071                 sprintf( full, "%s/%s", cwd, file );
2072                 remove( full );
2073                 free( full );
2074                 free( cwd );
2075                 remove( "x264_2pass.log.temp" );
2076         }
2077
2078         while ( ( frame = mlt_deque_pop_back( queue ) ) )
2079                 mlt_frame_close( frame );
2080
2081         return NULL;
2082 }
2083
2084 /** Close the consumer.
2085 */
2086
2087 static void consumer_close( mlt_consumer consumer )
2088 {
2089         // Stop the consumer
2090         mlt_consumer_stop( consumer );
2091
2092         // Close the parent
2093         mlt_consumer_close( consumer );
2094
2095         // Free the memory
2096         free( consumer );
2097 }