2 * consumer_avformat.c -- an encoder based on avformat
3 * Copyright (C) 2003-2004 Ushodaya Enterprises Limited
4 * Author: Charles Yates <charles.yates@pandora.be>
5 * Much code borrowed from ffmpeg.c: Copyright (c) 2000-2003 Fabrice Bellard
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 #include <framework/mlt_consumer.h>
24 #include <framework/mlt_frame.h>
26 // System header files
36 // avformat header files
44 // This structure should be extended and made globally available in mlt
56 *sample_fifo, sample_fifo_s;
58 sample_fifo sample_fifo_init( int frequency, int channels )
60 sample_fifo this = calloc( 1, sizeof( sample_fifo_s ) );
61 this->frequency = frequency;
62 this->channels = channels;
66 // sample_fifo_clear and check are temporarily aborted (not working as intended)
68 void sample_fifo_clear( sample_fifo this, double time )
70 int words = ( float )( time - this->time ) * this->frequency * this->channels;
71 if ( ( int )( ( float )time * 100 ) < ( int )( ( float )this->time * 100 ) && this->used > words && words > 0 )
73 memmove( this->buffer, &this->buffer[ words ], ( this->used - words ) * sizeof( int16_t ) );
77 else if ( ( int )( ( float )time * 100 ) != ( int )( ( float )this->time * 100 ) )
84 void sample_fifo_check( sample_fifo this, double time )
86 if ( this->used == 0 )
88 if ( ( int )( ( float )time * 100 ) < ( int )( ( float )this->time * 100 ) )
93 void sample_fifo_append( sample_fifo this, int16_t *samples, int count )
95 if ( ( this->size - this->used ) < count )
97 this->size += count * 5;
98 this->buffer = realloc( this->buffer, this->size * sizeof( int16_t ) );
101 memcpy( &this->buffer[ this->used ], samples, count * sizeof( int16_t ) );
105 int sample_fifo_used( sample_fifo this )
110 int sample_fifo_fetch( sample_fifo this, int16_t *samples, int count )
112 if ( count > this->used )
115 memcpy( samples, this->buffer, count * sizeof( int16_t ) );
117 memmove( this->buffer, &this->buffer[ count ], this->used * sizeof( int16_t ) );
119 this->time += ( double )count / this->channels / this->frequency;
124 void sample_fifo_close( sample_fifo this )
126 free( this->buffer );
130 // Forward references.
131 static int consumer_start( mlt_consumer this );
132 static int consumer_stop( mlt_consumer this );
133 static int consumer_is_stopped( mlt_consumer this );
134 static void *consumer_thread( void *arg );
135 static void consumer_close( mlt_consumer this );
137 /** Initialise the dv consumer.
140 mlt_consumer consumer_avformat_init( mlt_profile profile, char *arg )
142 // Allocate the consumer
143 mlt_consumer this = mlt_consumer_new( profile );
145 // If memory allocated and initialises without error
148 // Get properties from the consumer
149 mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
151 // Assign close callback
152 this->close = consumer_close;
154 // Interpret the argument
156 mlt_properties_set( properties, "target", arg );
158 // sample and frame queue
159 mlt_properties_set_data( properties, "frame_queue", mlt_deque_init( ), 0, ( mlt_destructor )mlt_deque_close, NULL );
161 // Audio options not fully handled by AVOptions
162 #define QSCALE_NONE (-99999)
163 mlt_properties_set_int( properties, "aq", QSCALE_NONE );
165 // Video options not fully handled by AVOptions
166 mlt_properties_set_int( properties, "dc", 8 );
168 // Muxer options not fully handled by AVOptions
169 mlt_properties_set_double( properties, "muxdelay", 0.7 );
170 mlt_properties_set_double( properties, "muxpreload", 0.5 );
172 // Ensure termination at end of the stream
173 mlt_properties_set_int( properties, "terminate_on_pause", 1 );
175 // Default to separate processing threads for producer and consumer with no frame dropping!
176 mlt_properties_set_int( properties, "real_time", -1 );
178 // Set up start/stop/terminated callbacks
179 this->start = consumer_start;
180 this->stop = consumer_stop;
181 this->is_stopped = consumer_is_stopped;
188 /** Start the consumer.
191 static int consumer_start( mlt_consumer this )
193 // Get the properties
194 mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
197 // Report information about available muxers and codecs as YAML Tiny
198 char *s = mlt_properties_get( properties, "f" );
199 if ( s && strcmp( s, "list" ) == 0 )
201 fprintf( stderr, "---\nformats:\n" );
202 AVOutputFormat *format = NULL;
203 while ( ( format = av_oformat_next( format ) ) )
204 fprintf( stderr, " - %s\n", format->name );
205 fprintf( stderr, "...\n" );
208 s = mlt_properties_get( properties, "acodec" );
209 if ( s && strcmp( s, "list" ) == 0 )
211 fprintf( stderr, "---\naudio_codecs:\n" );
212 AVCodec *codec = NULL;
213 while ( ( codec = av_codec_next( codec ) ) )
214 if ( codec->encode && codec->type == CODEC_TYPE_AUDIO )
215 fprintf( stderr, " - %s\n", codec->name );
216 fprintf( stderr, "...\n" );
219 s = mlt_properties_get( properties, "vcodec" );
220 if ( s && strcmp( s, "list" ) == 0 )
222 fprintf( stderr, "---\nvideo_codecs:\n" );
223 AVCodec *codec = NULL;
224 while ( ( codec = av_codec_next( codec ) ) )
225 if ( codec->encode && codec->type == CODEC_TYPE_VIDEO )
226 fprintf( stderr, " - %s\n", codec->name );
227 fprintf( stderr, "...\n" );
231 // Check that we're not already running
232 if ( !error && !mlt_properties_get_int( properties, "running" ) )
235 pthread_t *thread = calloc( 1, sizeof( pthread_t ) );
237 // Get the width and height
238 int width = mlt_properties_get_int( properties, "width" );
239 int height = mlt_properties_get_int( properties, "height" );
241 // Obtain the size property
242 char *size = mlt_properties_get( properties, "s" );
248 if ( sscanf( size, "%dx%d", &tw, &th ) == 2 && tw > 0 && th > 0 )
255 fprintf( stderr, "%s: Invalid size property %s - ignoring.\n", __FILE__, size );
259 // Now ensure we honour the multiple of two requested by libavformat
260 width = ( width / 2 ) * 2;
261 height = ( height / 2 ) * 2;
262 mlt_properties_set_int( properties, "width", width );
263 mlt_properties_set_int( properties, "height", height );
265 // We need to set these on the profile as well because the s property is
266 // an alias to mlt properties that correspond to profile settings.
267 mlt_profile profile = mlt_service_profile( MLT_CONSUMER_SERVICE( this ) );
270 profile->width = width;
271 profile->height = height;
274 // Handle the ffmpeg command line "-r" property for frame rate
275 if ( mlt_properties_get( properties, "r" ) )
277 double frame_rate = mlt_properties_get_double( properties, "r" );
278 AVRational rational = av_d2q( frame_rate, 255 );
279 mlt_properties_set_int( properties, "frame_rate_num", rational.num );
280 mlt_properties_set_int( properties, "frame_rate_den", rational.den );
283 profile->frame_rate_num = rational.num;
284 profile->frame_rate_den = rational.den;
285 mlt_properties_set_double( properties, "fps", mlt_profile_fps( profile ) );
289 // Apply AVOptions that are synonyms for standard mlt_consumer options
290 if ( mlt_properties_get( properties, "ac" ) )
291 mlt_properties_set_int( properties, "channels", mlt_properties_get_int( properties, "ac" ) );
292 if ( mlt_properties_get( properties, "ar" ) )
293 mlt_properties_set_int( properties, "frequency", mlt_properties_get_int( properties, "ar" ) );
295 // Assign the thread to properties
296 mlt_properties_set_data( properties, "thread", thread, sizeof( pthread_t ), free, NULL );
298 // Set the running state
299 mlt_properties_set_int( properties, "running", 1 );
302 pthread_create( thread, NULL, consumer_thread, this );
307 /** Stop the consumer.
310 static int consumer_stop( mlt_consumer this )
312 // Get the properties
313 mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
315 // Check that we're running
316 if ( mlt_properties_get_int( properties, "running" ) )
319 pthread_t *thread = mlt_properties_get_data( properties, "thread", NULL );
322 mlt_properties_set_int( properties, "running", 0 );
324 // Wait for termination
325 pthread_join( *thread, NULL );
331 /** Determine if the consumer is stopped.
334 static int consumer_is_stopped( mlt_consumer this )
336 // Get the properties
337 mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
338 return !mlt_properties_get_int( properties, "running" );
341 /** Process properties as AVOptions and apply to AV context obj
344 static void apply_properties( void *obj, mlt_properties properties, int flags )
347 int count = mlt_properties_count( properties );
348 for ( i = 0; i < count; i++ )
350 const char *opt_name = mlt_properties_get_name( properties, i );
351 const AVOption *opt = av_find_opt( obj, opt_name, NULL, flags, flags );
353 #if LIBAVCODEC_VERSION_INT >= ((52<<16)+(7<<8)+0)
354 av_set_string3( obj, opt_name, mlt_properties_get( properties, opt_name), 0, NULL );
355 #elif LIBAVCODEC_VERSION_INT >= ((51<<16)+(59<<8)+0)
356 av_set_string2( obj, opt_name, mlt_properties_get( properties, opt_name), 0 );
358 av_set_string( obj, opt_name, mlt_properties_get( properties, opt_name) );
363 /** Add an audio output stream
366 static AVStream *add_audio_stream( mlt_consumer this, AVFormatContext *oc, int codec_id )
368 // Get the properties
369 mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
371 // Create a new stream
372 AVStream *st = av_new_stream( oc, 1 );
374 // If created, then initialise from properties
377 AVCodecContext *c = st->codec;
379 // Establish defaults from AVOptions
380 avcodec_get_context_defaults2( c, CODEC_TYPE_AUDIO );
382 c->codec_id = codec_id;
383 c->codec_type = CODEC_TYPE_AUDIO;
385 // Setup multi-threading
386 int thread_count = mlt_properties_get_int( properties, "threads" );
387 if ( thread_count == 0 && getenv( "MLT_AVFORMAT_THREADS" ) )
388 thread_count = atoi( getenv( "MLT_AVFORMAT_THREADS" ) );
389 if ( thread_count > 1 )
390 avcodec_thread_init( c, thread_count );
392 if (oc->oformat->flags & AVFMT_GLOBALHEADER)
393 c->flags |= CODEC_FLAG_GLOBAL_HEADER;
395 // Allow the user to override the audio fourcc
396 if ( mlt_properties_get( properties, "atag" ) )
399 char *arg = mlt_properties_get( properties, "atag" );
400 int tag = strtol( arg, &tail, 0);
402 tag = arg[ 0 ] + ( arg[ 1 ] << 8 ) + ( arg[ 2 ] << 16 ) + ( arg[ 3 ] << 24 );
406 // Process properties as AVOptions
407 apply_properties( c, properties, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM );
409 int audio_qscale = mlt_properties_get_int( properties, "aq" );
410 if ( audio_qscale > QSCALE_NONE )
412 c->flags |= CODEC_FLAG_QSCALE;
413 c->global_quality = st->quality = FF_QP2LAMBDA * audio_qscale;
416 // Set parameters controlled by MLT
417 c->sample_rate = mlt_properties_get_int( properties, "frequency" );
418 c->channels = mlt_properties_get_int( properties, "channels" );
420 if ( mlt_properties_get( properties, "alang" ) != NULL )
421 strncpy( st->language, mlt_properties_get( properties, "alang" ), sizeof( st->language ) );
425 fprintf( stderr, "%s: Could not allocate a stream for audio\n", __FILE__ );
431 static int open_audio( AVFormatContext *oc, AVStream *st, int audio_outbuf_size )
433 // We will return the audio input size from here
434 int audio_input_frame_size = 0;
437 AVCodecContext *c = st->codec;
440 AVCodec *codec = avcodec_find_encoder( c->codec_id );
442 // Continue if codec found and we can open it
443 if ( codec != NULL && avcodec_open( c, codec ) >= 0 )
445 // ugly hack for PCM codecs (will be removed ASAP with new PCM
446 // support to compute the input frame size in samples
447 if ( c->frame_size <= 1 )
449 audio_input_frame_size = audio_outbuf_size / c->channels;
450 switch(st->codec->codec_id)
452 case CODEC_ID_PCM_S16LE:
453 case CODEC_ID_PCM_S16BE:
454 case CODEC_ID_PCM_U16LE:
455 case CODEC_ID_PCM_U16BE:
456 audio_input_frame_size >>= 1;
464 audio_input_frame_size = c->frame_size;
467 // Some formats want stream headers to be seperate (hmm)
468 if( !strcmp( oc->oformat->name, "mp4" ) ||
469 !strcmp( oc->oformat->name, "mov" ) ||
470 !strcmp( oc->oformat->name, "3gp" ) )
471 c->flags |= CODEC_FLAG_GLOBAL_HEADER;
475 fprintf( stderr, "%s: Unable to encode audio - disabling audio output.\n", __FILE__ );
478 return audio_input_frame_size;
481 static void close_audio( AVFormatContext *oc, AVStream *st )
483 avcodec_close( st->codec );
486 /** Add a video output stream
489 static AVStream *add_video_stream( mlt_consumer this, AVFormatContext *oc, int codec_id )
491 // Get the properties
492 mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
494 // Create a new stream
495 AVStream *st = av_new_stream( oc, 0 );
499 char *pix_fmt = mlt_properties_get( properties, "pix_fmt" );
500 AVCodecContext *c = st->codec;
502 // Establish defaults from AVOptions
503 avcodec_get_context_defaults2( c, CODEC_TYPE_VIDEO );
505 c->codec_id = codec_id;
506 c->codec_type = CODEC_TYPE_VIDEO;
508 // Setup multi-threading
509 int thread_count = mlt_properties_get_int( properties, "threads" );
510 if ( thread_count == 0 && getenv( "MLT_AVFORMAT_THREADS" ) )
511 thread_count = atoi( getenv( "MLT_AVFORMAT_THREADS" ) );
512 if ( thread_count > 1 )
513 avcodec_thread_init( c, thread_count );
515 // Process properties as AVOptions
516 apply_properties( c, properties, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM );
518 // Set options controlled by MLT
519 c->width = mlt_properties_get_int( properties, "width" );
520 c->height = mlt_properties_get_int( properties, "height" );
521 c->time_base.num = mlt_properties_get_int( properties, "frame_rate_den" );
522 c->time_base.den = mlt_properties_get_int( properties, "frame_rate_num" );
523 st->time_base = c->time_base;
524 c->pix_fmt = pix_fmt ? avcodec_get_pix_fmt( pix_fmt ) : PIX_FMT_YUV420P;
526 if ( mlt_properties_get( properties, "aspect" ) )
528 // "-aspect" on ffmpeg command line is display aspect ratio
529 double ar = mlt_properties_get_double( properties, "aspect" );
530 AVRational rational = av_d2q( ar, 255 );
532 // Update the profile and properties as well since this is an alias
533 // for mlt properties that correspond to profile settings
534 mlt_properties_set_int( properties, "display_aspect_num", rational.num );
535 mlt_properties_set_int( properties, "display_aspect_den", rational.den );
536 mlt_profile profile = mlt_service_profile( MLT_CONSUMER_SERVICE( this ) );
539 profile->display_aspect_num = rational.num;
540 profile->display_aspect_den = rational.den;
541 mlt_properties_set_double( properties, "display_ratio", mlt_profile_dar( profile ) );
544 // Now compute the sample aspect ratio
545 rational = av_d2q( ar * c->height / c->width, 255 );
546 c->sample_aspect_ratio = rational;
547 // Update the profile and properties as well since this is an alias
548 // for mlt properties that correspond to profile settings
549 mlt_properties_set_int( properties, "sample_aspect_num", rational.num );
550 mlt_properties_set_int( properties, "sample_aspect_den", rational.den );
553 profile->sample_aspect_num = rational.num;
554 profile->sample_aspect_den = rational.den;
555 mlt_properties_set_double( properties, "aspect_ratio", mlt_profile_sar( profile ) );
560 c->sample_aspect_ratio.num = mlt_properties_get_int( properties, "sample_aspect_num" );
561 c->sample_aspect_ratio.den = mlt_properties_get_int( properties, "sample_aspect_den" );
563 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(21<<8)+0)
564 st->sample_aspect_ratio = c->sample_aspect_ratio;
567 if ( mlt_properties_get_double( properties, "qscale" ) > 0 )
569 c->flags |= CODEC_FLAG_QSCALE;
570 st->quality = FF_QP2LAMBDA * mlt_properties_get_double( properties, "qscale" );
573 // Allow the user to override the video fourcc
574 if ( mlt_properties_get( properties, "vtag" ) )
577 const char *arg = mlt_properties_get( properties, "vtag" );
578 int tag = strtol( arg, &tail, 0);
580 tag = arg[ 0 ] + ( arg[ 1 ] << 8 ) + ( arg[ 2 ] << 16 ) + ( arg[ 3 ] << 24 );
584 // Some formats want stream headers to be seperate
585 if ( oc->oformat->flags & AVFMT_GLOBALHEADER )
586 c->flags |= CODEC_FLAG_GLOBAL_HEADER;
588 // Translate these standard mlt consumer properties to ffmpeg
589 if ( mlt_properties_get_int( properties, "progressive" ) == 0 &&
590 mlt_properties_get_int( properties, "deinterlace" ) == 0 )
592 if ( mlt_properties_get_int( properties, "ildct" ) )
593 c->flags |= CODEC_FLAG_INTERLACED_DCT;
594 if ( mlt_properties_get_int( properties, "ilme" ) )
595 c->flags |= CODEC_FLAG_INTERLACED_ME;
598 // parse the ratecontrol override string
600 char *rc_override = mlt_properties_get( properties, "rc_override" );
601 for ( i = 0; rc_override; i++ )
604 int e = sscanf( rc_override, "%d,%d,%d", &start, &end, &q );
606 fprintf( stderr, "%s: Error parsing rc_override\n", __FILE__ );
607 c->rc_override = av_realloc( c->rc_override, sizeof( RcOverride ) * ( i + 1 ) );
608 c->rc_override[i].start_frame = start;
609 c->rc_override[i].end_frame = end;
612 c->rc_override[i].qscale = q;
613 c->rc_override[i].quality_factor = 1.0;
617 c->rc_override[i].qscale = 0;
618 c->rc_override[i].quality_factor = -q / 100.0;
620 rc_override = strchr( rc_override, '/' );
624 c->rc_override_count = i;
625 if ( !c->rc_initial_buffer_occupancy )
626 c->rc_initial_buffer_occupancy = c->rc_buffer_size * 3/4;
627 c->intra_dc_precision = mlt_properties_get_int( properties, "dc" ) - 8;
630 i = mlt_properties_get_int( properties, "pass" );
632 c->flags |= CODEC_FLAG_PASS1;
634 c->flags |= CODEC_FLAG_PASS2;
635 if ( codec_id != CODEC_ID_H264 && ( c->flags & ( CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2 ) ) )
637 char logfilename[1024];
642 snprintf( logfilename, sizeof(logfilename), "%s_2pass.log",
643 mlt_properties_get( properties, "passlogfile" ) ? mlt_properties_get( properties, "passlogfile" ) : mlt_properties_get( properties, "target" ) );
644 if ( c->flags & CODEC_FLAG_PASS1 )
646 f = fopen( logfilename, "w" );
648 perror( logfilename );
650 mlt_properties_set_data( properties, "_logfile", f, 0, ( mlt_destructor )fclose, NULL );
654 /* read the log file */
655 f = fopen( logfilename, "r" );
662 mlt_properties_set( properties, "_logfilename", logfilename );
663 fseek( f, 0, SEEK_END );
665 fseek( f, 0, SEEK_SET );
666 logbuffer = av_malloc( size + 1 );
668 fprintf( stderr, "%s: Could not allocate log buffer\n", __FILE__ );
671 size = fread( logbuffer, 1, size, f );
673 logbuffer[size] = '\0';
674 c->stats_in = logbuffer;
675 mlt_properties_set_data( properties, "_logbuffer", logbuffer, 0, ( mlt_destructor )av_free, NULL );
683 fprintf( stderr, "%s: Could not allocate a stream for video\n", __FILE__ );
689 static AVFrame *alloc_picture( int pix_fmt, int width, int height )
692 AVFrame *picture = avcodec_alloc_frame();
694 // Determine size of the
695 int size = avpicture_get_size(pix_fmt, width, height);
697 // Allocate the picture buf
698 uint8_t *picture_buf = av_malloc(size);
700 // If we have both, then fill the image
701 if ( picture != NULL && picture_buf != NULL )
703 // Fill the frame with the allocated buffer
704 avpicture_fill( (AVPicture *)picture, picture_buf, pix_fmt, width, height);
708 // Something failed - clean up what we can
710 av_free( picture_buf );
717 static int open_video(AVFormatContext *oc, AVStream *st)
720 AVCodecContext *video_enc = st->codec;
722 // find the video encoder
723 AVCodec *codec = avcodec_find_encoder( video_enc->codec_id );
725 if( codec && codec->pix_fmts )
727 const enum PixelFormat *p = codec->pix_fmts;
730 if( *p == video_enc->pix_fmt )
734 video_enc->pix_fmt = codec->pix_fmts[ 0 ];
737 // Open the codec safely
738 return codec != NULL && avcodec_open( video_enc, codec ) >= 0;
741 void close_video(AVFormatContext *oc, AVStream *st)
743 avcodec_close(st->codec);
746 static inline long time_difference( struct timeval *time1 )
748 struct timeval time2;
749 gettimeofday( &time2, NULL );
750 return time2.tv_sec * 1000000 + time2.tv_usec - time1->tv_sec * 1000000 - time1->tv_usec;
753 /** The main thread - the argument is simply the consumer.
756 static void *consumer_thread( void *arg )
758 // Map the argument to the object
759 mlt_consumer this = arg;
761 // Get the properties
762 mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
764 // Get the terminate on pause property
765 int terminate_on_pause = mlt_properties_get_int( properties, "terminate_on_pause" );
768 // Determine if feed is slow (for realtime stuff)
769 int real_time_output = mlt_properties_get_int( properties, "real_time" );
774 // Get the frame rate
775 double fps = mlt_properties_get_double( properties, "fps" );
777 // Get width and height
778 int width = mlt_properties_get_int( properties, "width" );
779 int height = mlt_properties_get_int( properties, "height" );
780 int img_width = width;
781 int img_height = height;
783 // Get default audio properties
784 mlt_audio_format aud_fmt = mlt_audio_pcm;
785 int channels = mlt_properties_get_int( properties, "channels" );
786 int frequency = mlt_properties_get_int( properties, "frequency" );
790 // AVFormat audio buffer and frame size
791 int audio_outbuf_size = 10000;
792 uint8_t *audio_outbuf = av_malloc( audio_outbuf_size );
793 int audio_input_frame_size = 0;
795 // AVFormat video buffer and frame count
797 int video_outbuf_size = ( 1024 * 1024 );
798 uint8_t *video_outbuf = av_malloc( video_outbuf_size );
800 // Used for the frame properties
801 mlt_frame frame = NULL;
802 mlt_properties frame_properties = NULL;
805 mlt_deque queue = mlt_properties_get_data( properties, "frame_queue", NULL );
806 sample_fifo fifo = mlt_properties_get_data( properties, "sample_fifo", NULL );
808 // Need two av pictures for converting
809 AVFrame *output = NULL;
810 AVFrame *input = alloc_picture( PIX_FMT_YUV422, width, height );
812 // For receiving images from an mlt_frame
814 mlt_image_format img_fmt = mlt_image_yuv422;
816 // For receiving audio samples back from the fifo
817 int16_t *buffer = av_malloc( 48000 * 2 );
820 // Allocate the context
821 AVFormatContext *oc = av_alloc_format_context( );
824 AVStream *audio_st = NULL;
825 AVStream *video_st = NULL;
828 double audio_pts = 0;
829 double video_pts = 0;
836 long int total_time = 0;
838 // Determine the format
839 AVOutputFormat *fmt = NULL;
840 char *filename = mlt_properties_get( properties, "target" );
841 char *format = mlt_properties_get( properties, "f" );
842 char *vcodec = mlt_properties_get( properties, "vcodec" );
843 char *acodec = mlt_properties_get( properties, "acodec" );
845 // Used to store and override codec ids
849 // Check for user selected format first
850 if ( format != NULL )
851 fmt = guess_format( format, NULL, NULL );
853 // Otherwise check on the filename
854 if ( fmt == NULL && filename != NULL )
855 fmt = guess_format( NULL, filename, NULL );
857 // Otherwise default to mpeg
859 fmt = guess_format( "mpeg", NULL, NULL );
861 // We need a filename - default to stdout?
862 if ( filename == NULL || !strcmp( filename, "" ) )
865 // Get the codec ids selected
866 audio_codec_id = fmt->audio_codec;
867 video_codec_id = fmt->video_codec;
869 // Check for audio codec overides
870 if ( acodec != NULL )
872 AVCodec *p = avcodec_find_encoder_by_name( acodec );
874 audio_codec_id = p->id;
876 fprintf( stderr, "%s: audio codec %s unrecognised - ignoring\n", __FILE__, acodec );
879 // Check for video codec overides
880 if ( vcodec != NULL )
882 AVCodec *p = avcodec_find_encoder_by_name( vcodec );
884 video_codec_id = p->id;
886 fprintf( stderr, "%s: video codec %s unrecognised - ignoring\n", __FILE__, vcodec );
893 tmp = mlt_properties_get( properties, "meta.attr.title.markup");
894 if (tmp != NULL) snprintf( oc->title, sizeof(oc->title), "%s", tmp );
896 tmp = mlt_properties_get( properties, "meta.attr.comment.markup");
897 if (tmp != NULL) snprintf( oc->comment, sizeof(oc->comment), "%s", tmp );
899 tmp = mlt_properties_get( properties, "meta.attr.author.markup");
900 if (tmp != NULL) snprintf( oc->author, sizeof(oc->author), "%s", tmp );
902 tmp = mlt_properties_get( properties, "meta.attr.copyright.markup");
903 if (tmp != NULL) snprintf( oc->copyright, sizeof(oc->copyright), "%s", tmp );
905 tmp = mlt_properties_get( properties, "meta.attr.album.markup");
906 if (tmp != NULL) snprintf( oc->album, sizeof(oc->album), "%s", tmp );
908 metavalue = mlt_properties_get_int( properties, "meta.attr.year.markup");
909 if (metavalue != 0) oc->year = metavalue;
911 metavalue = mlt_properties_get_int( properties, "meta.attr.track.markup");
912 if (metavalue != 0) oc->track = metavalue;
915 snprintf( oc->filename, sizeof(oc->filename), "%s", filename );
917 // Add audio and video streams
918 if ( fmt->video_codec != CODEC_ID_NONE )
919 video_st = add_video_stream( this, oc, video_codec_id );
920 if ( fmt->audio_codec != CODEC_ID_NONE )
921 audio_st = add_audio_stream( this, oc, audio_codec_id );
923 // Set the parameters (even though we have none...)
924 if ( av_set_parameters(oc, NULL) >= 0 )
926 oc->preload = ( int )( mlt_properties_get_double( properties, "muxpreload" ) * AV_TIME_BASE );
927 oc->max_delay= ( int )( mlt_properties_get_double( properties, "muxdelay" ) * AV_TIME_BASE );
929 // Process properties as AVOptions
930 apply_properties( oc, properties, AV_OPT_FLAG_ENCODING_PARAM );
932 if ( video_st && !open_video( oc, video_st ) )
935 audio_input_frame_size = open_audio( oc, audio_st, audio_outbuf_size );
937 // Open the output file, if needed
938 if ( !( fmt->flags & AVFMT_NOFILE ) )
940 if ( url_fopen( &oc->pb, filename, URL_WRONLY ) < 0 )
942 fprintf( stderr, "%s: Could not open '%s'\n", __FILE__, filename );
943 mlt_properties_set_int( properties, "running", 0 );
947 // Write the stream header, if any
948 if ( mlt_properties_get_int( properties, "running" ) )
949 av_write_header( oc );
953 fprintf( stderr, "%s: Invalid output format parameters\n", __FILE__ );
954 mlt_properties_set_int( properties, "running", 0 );
959 output = alloc_picture( video_st->codec->pix_fmt, width, height );
961 // Last check - need at least one stream
962 if ( audio_st == NULL && video_st == NULL )
963 mlt_properties_set_int( properties, "running", 0 );
965 // Get the starting time (can ignore the times above)
966 gettimeofday( &ante, NULL );
968 // Loop while running
969 while( mlt_properties_get_int( properties, "running" ) && !terminated )
972 frame = mlt_consumer_rt_frame( this );
974 // Check that we have a frame to work with
977 // Increment frames despatched
980 // Default audio args
981 frame_properties = MLT_FRAME_PROPERTIES( frame );
983 // Check for the terminated condition
984 terminated = terminate_on_pause && mlt_properties_get_double( frame_properties, "_speed" ) == 0.0;
986 // Get audio and append to the fifo
987 if ( !terminated && audio_st )
989 samples = mlt_sample_calculator( fps, frequency, count ++ );
990 mlt_frame_get_audio( frame, &pcm, &aud_fmt, &frequency, &channels, &samples );
992 // Create the fifo if we don't have one
995 fifo = sample_fifo_init( frequency, channels );
996 mlt_properties_set_data( properties, "sample_fifo", fifo, 0, ( mlt_destructor )sample_fifo_close, NULL );
999 if ( mlt_properties_get_double( frame_properties, "_speed" ) != 1.0 )
1000 memset( pcm, 0, samples * channels * 2 );
1002 // Append the samples
1003 sample_fifo_append( fifo, pcm, samples * channels );
1004 total_time += ( samples * 1000000 ) / frequency;
1008 if ( !terminated && video_st )
1009 mlt_deque_push_back( queue, frame );
1011 mlt_frame_close( frame );
1014 // While we have stuff to process, process...
1018 audio_pts = (double)audio_st->pts.val * audio_st->time_base.num / audio_st->time_base.den;
1023 video_pts = (double)video_st->pts.val * video_st->time_base.num / video_st->time_base.den;
1027 // Write interleaved audio and video frames
1028 if ( !video_st || ( video_st && audio_st && audio_pts < video_pts ) )
1030 if ( channels * audio_input_frame_size < sample_fifo_used( fifo ) )
1034 av_init_packet( &pkt );
1036 c = audio_st->codec;
1038 sample_fifo_fetch( fifo, buffer, channels * audio_input_frame_size );
1040 pkt.size = avcodec_encode_audio( c, audio_outbuf, audio_outbuf_size, buffer );
1041 // Write the compressed frame in the media file
1042 if ( c->coded_frame && c->coded_frame->pts != AV_NOPTS_VALUE )
1043 pkt.pts = av_rescale_q( c->coded_frame->pts, c->time_base, audio_st->time_base );
1044 pkt.flags |= PKT_FLAG_KEY;
1045 pkt.stream_index= audio_st->index;
1046 pkt.data= audio_outbuf;
1049 if ( av_interleaved_write_frame( oc, &pkt ) != 0)
1050 fprintf( stderr, "%s: Error while writing audio frame\n", __FILE__ );
1052 audio_pts += c->frame_size;
1059 else if ( video_st )
1061 if ( mlt_deque_count( queue ) )
1066 frame = mlt_deque_pop_front( queue );
1067 frame_properties = MLT_FRAME_PROPERTIES( frame );
1069 c = video_st->codec;
1071 if ( mlt_properties_get_int( frame_properties, "rendered" ) )
1078 mlt_events_fire( properties, "consumer-frame-show", frame, NULL );
1080 mlt_frame_get_image( frame, &image, &img_fmt, &img_width, &img_height, 0 );
1084 // Convert the mlt frame to an AVPicture
1085 for ( i = 0; i < height; i ++ )
1087 p = input->data[ 0 ] + i * input->linesize[ 0 ];
1096 // Do the colour space conversion
1098 struct SwsContext *context = sws_getContext( width, height, PIX_FMT_YUV422,
1099 width, height, video_st->codec->pix_fmt, SWS_FAST_BILINEAR, NULL, NULL, NULL);
1100 sws_scale( context, input->data, input->linesize, 0, height,
1101 output->data, output->linesize);
1102 sws_freeContext( context );
1104 img_convert( ( AVPicture * )output, video_st->codec->pix_fmt, ( AVPicture * )input, PIX_FMT_YUV422, width, height );
1107 // Apply the alpha if applicable
1108 if ( video_st->codec->pix_fmt == PIX_FMT_RGBA32 )
1110 uint8_t *alpha = mlt_frame_get_alpha_mask( frame );
1113 for ( i = 0; i < height; i ++ )
1115 n = ( width + 7 ) / 8;
1116 p = output->data[ 0 ] + i * output->linesize[ 0 ];
1124 case 0: do { *p = *alpha++; p += 4;
1125 case 7: *p = *alpha++; p += 4;
1126 case 6: *p = *alpha++; p += 4;
1127 case 5: *p = *alpha++; p += 4;
1128 case 4: *p = *alpha++; p += 4;
1129 case 3: *p = *alpha++; p += 4;
1130 case 2: *p = *alpha++; p += 4;
1131 case 1: *p = *alpha++; p += 4;
1139 if (oc->oformat->flags & AVFMT_RAWPICTURE)
1141 // raw video case. The API will change slightly in the near future for that
1143 av_init_packet(&pkt);
1145 pkt.flags |= PKT_FLAG_KEY;
1146 pkt.stream_index= video_st->index;
1147 pkt.data= (uint8_t *)output;
1148 pkt.size= sizeof(AVPicture);
1150 ret = av_write_frame(oc, &pkt);
1151 video_pts += c->frame_size;
1156 output->quality = video_st->quality;
1158 // Set frame interlace hints
1159 output->interlaced_frame = !mlt_properties_get_int( frame_properties, "progressive" );
1160 output->top_field_first = mlt_properties_get_int( frame_properties, "top_field_first" );
1163 out_size = avcodec_encode_video(c, video_outbuf, video_outbuf_size, output );
1165 // If zero size, it means the image was buffered
1169 av_init_packet( &pkt );
1171 if ( c->coded_frame && c->coded_frame->pts != AV_NOPTS_VALUE )
1172 pkt.pts= av_rescale_q( c->coded_frame->pts, c->time_base, video_st->time_base );
1173 if( c->coded_frame && c->coded_frame->key_frame )
1174 pkt.flags |= PKT_FLAG_KEY;
1175 pkt.stream_index= video_st->index;
1176 pkt.data= video_outbuf;
1179 // write the compressed frame in the media file
1180 ret = av_interleaved_write_frame(oc, &pkt);
1181 video_pts += c->frame_size;
1183 // Dual pass logging
1184 if ( mlt_properties_get_data( properties, "_logfile", NULL ) && c->stats_out)
1185 fprintf( mlt_properties_get_data( properties, "_logfile", NULL ), "%s", c->stats_out );
1189 fprintf( stderr, "%s: error with video encode\n", __FILE__ );
1193 mlt_frame_close( frame );
1202 if ( real_time_output == 1 && frames % 12 == 0 )
1204 long passed = time_difference( &ante );
1207 long pending = ( ( ( long )sample_fifo_used( fifo ) * 1000 ) / frequency ) * 1000;
1210 if ( passed < total_time )
1212 long total = ( total_time - passed );
1213 struct timespec t = { total / 1000000, ( total % 1000000 ) * 1000 };
1214 nanosleep( &t, NULL );
1220 if ( ! real_time_output )
1223 if ( audio_st && audio_st->codec->frame_size > 1 ) for (;;)
1225 AVCodecContext *c = audio_st->codec;
1227 av_init_packet( &pkt );
1230 if ( /*( c->capabilities & CODEC_CAP_SMALL_LAST_FRAME ) &&*/
1231 ( channels * audio_input_frame_size < sample_fifo_used( fifo ) ) )
1233 sample_fifo_fetch( fifo, buffer, channels * audio_input_frame_size );
1234 pkt.size = avcodec_encode_audio( c, audio_outbuf, audio_outbuf_size, buffer );
1236 if ( pkt.size <= 0 )
1237 pkt.size = avcodec_encode_audio( c, audio_outbuf, audio_outbuf_size, NULL );
1238 if ( pkt.size <= 0 )
1241 // Write the compressed frame in the media file
1242 if ( c->coded_frame && c->coded_frame->pts != AV_NOPTS_VALUE )
1243 pkt.pts = av_rescale_q( c->coded_frame->pts, c->time_base, audio_st->time_base );
1244 pkt.flags |= PKT_FLAG_KEY;
1245 pkt.stream_index = audio_st->index;
1246 pkt.data = audio_outbuf;
1247 if ( av_interleaved_write_frame( oc, &pkt ) != 0 )
1249 fprintf( stderr, "%s: Error while writing flushed audio frame\n", __FILE__ );
1255 if ( video_st && !( oc->oformat->flags & AVFMT_RAWPICTURE ) ) for (;;)
1257 AVCodecContext *c = video_st->codec;
1259 av_init_packet( &pkt );
1262 pkt.size = avcodec_encode_video( c, video_outbuf, video_outbuf_size, NULL );
1263 if ( pkt.size <= 0 )
1266 if ( c->coded_frame && c->coded_frame->pts != AV_NOPTS_VALUE )
1267 pkt.pts= av_rescale_q( c->coded_frame->pts, c->time_base, video_st->time_base );
1268 if( c->coded_frame && c->coded_frame->key_frame )
1269 pkt.flags |= PKT_FLAG_KEY;
1270 pkt.stream_index = video_st->index;
1271 pkt.data = video_outbuf;
1273 // write the compressed frame in the media file
1274 if ( av_interleaved_write_frame( oc, &pkt ) != 0 )
1276 fprintf( stderr, "%s: Error while writing flushed video frame\n". __FILE__ );
1285 close_video(oc, video_st);
1287 close_audio(oc, audio_st);
1289 // Write the trailer, if any
1290 av_write_trailer(oc);
1293 for(i = 0; i < oc->nb_streams; i++)
1294 av_freep(&oc->streams[i]);
1296 // Close the output file
1297 if (!(fmt->flags & AVFMT_NOFILE))
1298 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(0<<8)+0)
1301 url_fclose(&oc->pb);
1304 // Clean up input and output frames
1306 av_free( output->data[0] );
1308 av_free( input->data[0] );
1310 av_free( video_outbuf );
1316 // Just in case we terminated on pause
1317 mlt_properties_set_int( properties, "running", 0 );
1319 mlt_consumer_stopped( this );
1321 if ( mlt_properties_get_int( properties, "pass" ) == 2 )
1323 // Remove the dual pass log file
1324 if ( mlt_properties_get( properties, "_logfilename" ) )
1325 remove( mlt_properties_get( properties, "_logfilename" ) );
1327 // Remove the x264 dual pass logs
1328 char *cwd = getcwd( NULL, 0 );
1329 char *file = "x264_2pass.log";
1330 char *full = malloc( strlen( cwd ) + strlen( file ) + 2 );
1331 sprintf( full, "%s/%s", cwd, file );
1334 file = "x264_2pass.log.temp";
1335 full = malloc( strlen( cwd ) + strlen( file ) + 2 );
1336 sprintf( full, "%s/%s", cwd, file );
1340 remove( "x264_2pass.log.temp" );
1346 /** Close the consumer.
1349 static void consumer_close( mlt_consumer this )
1351 // Stop the consumer
1352 mlt_consumer_stop( this );
1355 mlt_consumer_close( this );