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>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software Foundation,
18 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
22 #include "consumer_avformat.h"
25 #include <framework/mlt_frame.h>
27 // System header files
35 // avformat header files
44 *sample_fifo
, sample_fifo_s
;
46 sample_fifo
sample_fifo_init( )
48 return calloc( 1, sizeof( sample_fifo_s
) );
51 void sample_fifo_append( sample_fifo
this, int16_t *samples
, int count
)
53 if ( ( this->size
- this->used
) < count
)
55 this->size
+= count
* 5;
56 this->buffer
= realloc( this->buffer
, this->size
* sizeof( int16_t ) );
59 memcpy( &this->buffer
[ this->used
], samples
, count
* sizeof( int16_t ) );
63 int sample_fifo_used( sample_fifo
this )
68 int sample_fifo_fetch( sample_fifo
this, int16_t *samples
, int count
)
70 if ( count
> this->used
)
73 memcpy( samples
, this->buffer
, count
* sizeof( int16_t ) );
75 memmove( this->buffer
, &this->buffer
[ count
], this->used
* sizeof( int16_t ) );
80 void sample_fifo_close( sample_fifo
this )
86 // Forward references.
87 static int consumer_start( mlt_consumer
this );
88 static int consumer_stop( mlt_consumer
this );
89 static int consumer_is_stopped( mlt_consumer
this );
90 static void *consumer_thread( void *arg
);
91 static void consumer_close( mlt_consumer
this );
93 /** Initialise the dv consumer.
96 mlt_consumer
consumer_avformat_init( char *arg
)
98 // Allocate the consumer
99 mlt_consumer
this = mlt_consumer_new( );
101 // If memory allocated and initialises without error
104 // Get properties from the consumer
105 mlt_properties properties
= mlt_consumer_properties( this );
107 // Assign close callback
108 this->close
= consumer_close
;
110 // Interpret the argument
112 mlt_properties_set( properties
, "target", arg
);
114 // sample and frame queue
115 mlt_properties_set_data( properties
, "sample_fifo", sample_fifo_init( ), 0, ( mlt_destructor
)sample_fifo_close
, NULL
);
116 mlt_properties_set_data( properties
, "frame_queue", mlt_deque_init( ), 0, ( mlt_destructor
)mlt_deque_close
, NULL
);
118 // Set avformat defaults (all lifted from ffmpeg.c)
119 mlt_properties_set_int( properties
, "audio_bit_rate", 128000 );
120 mlt_properties_set_int( properties
, "video_bit_rate", 200 * 1000 );
121 mlt_properties_set_int( properties
, "video_bit_rate_tolerance", 4000 * 1000 );
122 mlt_properties_set_int( properties
, "frame_rate_base", 1 );
123 mlt_properties_set_int( properties
, "gop_size", 12 );
124 mlt_properties_set_int( properties
, "b_frames", 0 );
125 mlt_properties_set_int( properties
, "mb_decision", FF_MB_DECISION_SIMPLE
);
126 mlt_properties_set_double( properties
, "qscale", 0 );
127 mlt_properties_set_int( properties
, "me_method", ME_EPZS
);
128 mlt_properties_set_int( properties
, "mb_cmp", FF_CMP_SAD
);
129 mlt_properties_set_int( properties
, "ildct_cmp", FF_CMP_VSAD
);
130 mlt_properties_set_int( properties
, "sub_cmp", FF_CMP_SAD
);
131 mlt_properties_set_int( properties
, "cmp", FF_CMP_SAD
);
132 mlt_properties_set_int( properties
, "pre_cmp", FF_CMP_SAD
);
133 mlt_properties_set_int( properties
, "pre_me", 0 );
134 mlt_properties_set_double( properties
, "lumi_mask", 0 );
135 mlt_properties_set_double( properties
, "dark_mask", 0 );
136 mlt_properties_set_double( properties
, "scplx_mask", 0 );
137 mlt_properties_set_double( properties
, "tcplx_mask", 0 );
138 mlt_properties_set_double( properties
, "p_mask", 0 );
139 mlt_properties_set_int( properties
, "qns", 0 );
140 mlt_properties_set_int( properties
, "video_qmin", 2 );
141 mlt_properties_set_int( properties
, "video_qmax", 31 );
142 mlt_properties_set_int( properties
, "video_lmin", 2*FF_QP2LAMBDA
);
143 mlt_properties_set_int( properties
, "video_lmax", 31*FF_QP2LAMBDA
);
144 mlt_properties_set_int( properties
, "video_mb_qmin", 2 );
145 mlt_properties_set_int( properties
, "video_mb_qmax", 31 );
146 mlt_properties_set_int( properties
, "video_qdiff", 3 );
147 mlt_properties_set_double( properties
, "video_qblur", 0.5 );
148 mlt_properties_set_double( properties
, "video_qcomp", 0.5 );
149 mlt_properties_set_int( properties
, "video_rc_max_rate", 0 );
150 mlt_properties_set_int( properties
, "video_rc_min_rate", 0 );
151 mlt_properties_set_int( properties
, "video_rc_buffer_size", 0 );
152 mlt_properties_set_double( properties
, "video_rc_buffer_aggressivity", 1.0 );
153 mlt_properties_set_double( properties
, "video_rc_initial_cplx", 0 );
154 mlt_properties_set_double( properties
, "video_i_qfactor", 1.25 );
155 mlt_properties_set_double( properties
, "video_b_qfactor", 1.25 );
156 mlt_properties_set_double( properties
, "video_i_qoffset", -0.8 );
157 mlt_properties_set_double( properties
, "video_b_qoffset", 0 );
158 mlt_properties_set_int( properties
, "video_intra_quant_bias", FF_DEFAULT_QUANT_BIAS
);
159 mlt_properties_set_int( properties
, "video_inter_quant_bias", FF_DEFAULT_QUANT_BIAS
);
160 mlt_properties_set_int( properties
, "dct_algo", 0 );
161 mlt_properties_set_int( properties
, "idct_algo", 0 );
162 mlt_properties_set_int( properties
, "me_threshold", 0 );
163 mlt_properties_set_int( properties
, "mb_threshold", 0 );
164 mlt_properties_set_int( properties
, "intra_dc_precision", 0 );
165 mlt_properties_set_int( properties
, "strict", 0 );
166 mlt_properties_set_int( properties
, "error_rate", 0 );
167 mlt_properties_set_int( properties
, "noise_reduction", 0 );
168 mlt_properties_set_int( properties
, "sc_threshold", 0 );
169 mlt_properties_set_int( properties
, "me_range", 0 );
170 mlt_properties_set_int( properties
, "coder", 0 );
171 mlt_properties_set_int( properties
, "context", 0 );
172 mlt_properties_set_int( properties
, "predictor", 0 );
174 // Ensure termination at end of the stream
175 mlt_properties_set_int( properties
, "terminate_on_pause", 1 );
177 // Set up start/stop/terminated callbacks
178 this->start
= consumer_start
;
179 this->stop
= consumer_stop
;
180 this->is_stopped
= consumer_is_stopped
;
187 /** Start the consumer.
190 static int consumer_start( mlt_consumer
this )
192 // Get the properties
193 mlt_properties properties
= mlt_consumer_properties( this );
195 // Check that we're not already running
196 if ( !mlt_properties_get_int( properties
, "running" ) )
199 pthread_t
*thread
= calloc( 1, sizeof( pthread_t
) );
200 pthread_attr_t thread_attributes
;
202 // Get the width and height
203 int width
= mlt_properties_get_int( properties
, "width" );
204 int height
= mlt_properties_get_int( properties
, "height" );
206 // Obtain the size property
207 char *size
= mlt_properties_get( properties
, "size" );
213 if ( sscanf( size
, "%dx%d", &tw
, &th
) == 2 && tw
> 0 && th
> 0 )
220 fprintf( stderr
, "consumer_avformat: Invalid size property %s - ignoring.\n", size
);
224 // Now ensure we honour the multiple of two requested by libavformat
225 mlt_properties_set_int( properties
, "width", ( width
/ 2 ) * 2 );
226 mlt_properties_set_int( properties
, "height", ( height
/ 2 ) * 2 );
228 // Assign the thread to properties
229 mlt_properties_set_data( properties
, "thread", thread
, sizeof( pthread_t
), free
, NULL
);
231 // Set the running state
232 mlt_properties_set_int( properties
, "running", 1 );
234 // Inherit the scheduling priority
235 pthread_attr_init( &thread_attributes
);
236 pthread_attr_setinheritsched( &thread_attributes
, PTHREAD_INHERIT_SCHED
);
239 pthread_create( thread
, &thread_attributes
, consumer_thread
, this );
244 /** Stop the consumer.
247 static int consumer_stop( mlt_consumer
this )
249 // Get the properties
250 mlt_properties properties
= mlt_consumer_properties( this );
252 // Check that we're running
253 if ( mlt_properties_get_int( properties
, "running" ) )
256 pthread_t
*thread
= mlt_properties_get_data( properties
, "thread", NULL
);
259 mlt_properties_set_int( properties
, "running", 0 );
261 // Wait for termination
262 pthread_join( *thread
, NULL
);
268 /** Determine if the consumer is stopped.
271 static int consumer_is_stopped( mlt_consumer
this )
273 // Get the properties
274 mlt_properties properties
= mlt_consumer_properties( this );
275 return !mlt_properties_get_int( properties
, "running" );
278 /** Add an audio output stream
281 static AVStream
*add_audio_stream( mlt_consumer
this, AVFormatContext
*oc
, int codec_id
)
283 // Get the properties
284 mlt_properties properties
= mlt_consumer_properties( this );
286 // Create a new stream
287 AVStream
*st
= av_new_stream( oc
, 1 );
289 // If created, then initialise from properties
292 AVCodecContext
*c
= &st
->codec
;
293 c
->codec_id
= codec_id
;
294 c
->codec_type
= CODEC_TYPE_AUDIO
;
296 // Put sample parameters
297 c
->bit_rate
= mlt_properties_get_int( properties
, "audio_bit_rate" );
298 c
->sample_rate
= mlt_properties_get_int( properties
, "frequency" );
299 c
->channels
= mlt_properties_get_int( properties
, "channels" );
303 fprintf( stderr
, "Could not allocate a stream for audio\n" );
309 static int open_audio( AVFormatContext
*oc
, AVStream
*st
, int audio_outbuf_size
)
311 // We will return the audio input size from here
312 int audio_input_frame_size
= 0;
315 AVCodecContext
*c
= &st
->codec
;
318 AVCodec
*codec
= avcodec_find_encoder( c
->codec_id
);
320 // Continue if codec found and we can open it
321 if ( codec
!= NULL
&& avcodec_open(c
, codec
) >= 0 )
323 // ugly hack for PCM codecs (will be removed ASAP with new PCM
324 // support to compute the input frame size in samples
325 if ( c
->frame_size
<= 1 )
327 audio_input_frame_size
= audio_outbuf_size
/ c
->channels
;
328 switch(st
->codec
.codec_id
)
330 case CODEC_ID_PCM_S16LE
:
331 case CODEC_ID_PCM_S16BE
:
332 case CODEC_ID_PCM_U16LE
:
333 case CODEC_ID_PCM_U16BE
:
334 audio_input_frame_size
>>= 1;
342 audio_input_frame_size
= c
->frame_size
;
345 // Some formats want stream headers to be seperate (hmm)
346 if( !strcmp( oc
->oformat
->name
, "mp4" ) ||
347 !strcmp( oc
->oformat
->name
, "mov" ) ||
348 !strcmp( oc
->oformat
->name
, "3gp" ) )
349 c
->flags
|= CODEC_FLAG_GLOBAL_HEADER
;
353 fprintf( stderr
, "Unable to encode audio - disabling audio output.\n" );
356 return audio_input_frame_size
;
359 static void close_audio( AVFormatContext
*oc
, AVStream
*st
)
361 avcodec_close( &st
->codec
);
364 /** Add a video output stream
367 static AVStream
*add_video_stream( mlt_consumer
this, AVFormatContext
*oc
, int codec_id
)
369 // Get the properties
370 mlt_properties properties
= mlt_consumer_properties( this );
372 // Create a new stream
373 AVStream
*st
= av_new_stream( oc
, 0 );
377 AVCodecContext
*c
= &st
->codec
;
378 c
->codec_id
= codec_id
;
379 c
->codec_type
= CODEC_TYPE_VIDEO
;
381 // put sample parameters
382 c
->bit_rate
= mlt_properties_get_int( properties
, "video_bit_rate" );
383 c
->bit_rate_tolerance
= mlt_properties_get_int( properties
, "video_bit_rate_tolerance" );
384 c
->width
= mlt_properties_get_int( properties
, "width" );
385 c
->height
= mlt_properties_get_int( properties
, "height" );
386 c
->frame_rate
= mlt_properties_get_double( properties
, "fps" );
387 c
->frame_rate_base
= mlt_properties_get_double( properties
, "frame_rate_base" );
388 c
->frame_rate_base
= 1;
389 c
->gop_size
= mlt_properties_get_int( properties
, "gop_size" );
391 if ( mlt_properties_get_int( properties
, "b_frames" ) )
393 c
->max_b_frames
= mlt_properties_get_int( properties
, "b_frames" );
394 c
->b_frame_strategy
= 0;
395 c
->b_quant_factor
= 2.0;
398 c
->mb_decision
= mlt_properties_get_int( properties
, "mb_decision" );
399 c
->sample_aspect_ratio
= av_d2q( mlt_properties_get_double( properties
, "aspect_ratio" ), 255 );
400 c
->mb_cmp
= mlt_properties_get_int( properties
, "mb_cmp" );
401 c
->ildct_cmp
= mlt_properties_get_int( properties
, "ildct_cmp" );
402 c
->me_sub_cmp
= mlt_properties_get_int( properties
, "sub_cmp" );
403 c
->me_cmp
= mlt_properties_get_int( properties
, "cmp" );
404 c
->me_pre_cmp
= mlt_properties_get_int( properties
, "pre_cmp" );
405 c
->pre_me
= mlt_properties_get_int( properties
, "pre_me" );
406 c
->lumi_masking
= mlt_properties_get_double( properties
, "lumi_mask" );
407 c
->dark_masking
= mlt_properties_get_double( properties
, "dark_mask" );
408 c
->spatial_cplx_masking
= mlt_properties_get_double( properties
, "scplx_mask" );
409 c
->temporal_cplx_masking
= mlt_properties_get_double( properties
, "tcplx_mask" );
410 c
->p_masking
= mlt_properties_get_double( properties
, "p_mask" );
411 c
->quantizer_noise_shaping
= mlt_properties_get_int( properties
, "qns" );
412 c
->qmin
= mlt_properties_get_int( properties
, "video_qmin" );
413 c
->qmax
= mlt_properties_get_int( properties
, "video_qmax" );
414 c
->lmin
= mlt_properties_get_int( properties
, "video_lmin" );
415 c
->lmax
= mlt_properties_get_int( properties
, "video_lmax" );
416 c
->mb_qmin
= mlt_properties_get_int( properties
, "video_mb_qmin" );
417 c
->mb_qmax
= mlt_properties_get_int( properties
, "video_mb_qmax" );
418 c
->max_qdiff
= mlt_properties_get_int( properties
, "video_qdiff" );
419 c
->qblur
= mlt_properties_get_double( properties
, "video_qblur" );
420 c
->qcompress
= mlt_properties_get_double( properties
, "video_qcomp" );
422 if ( mlt_properties_get_double( properties
, "qscale" ) > 0 )
424 c
->flags
|= CODEC_FLAG_QSCALE
;
425 st
->quality
= FF_QP2LAMBDA
* mlt_properties_get_double( properties
, "qscale" );
428 // Some formats want stream headers to be seperate (hmm)
429 if( !strcmp( oc
->oformat
->name
, "mp4" ) ||
430 !strcmp( oc
->oformat
->name
, "mov" ) ||
431 !strcmp( oc
->oformat
->name
, "3gp" ) )
432 c
->flags
|= CODEC_FLAG_GLOBAL_HEADER
;
434 c
->rc_max_rate
= mlt_properties_get_int( properties
, "video_rc_max_rate" );
435 c
->rc_min_rate
= mlt_properties_get_int( properties
, "video_rc_min_rate" );
436 c
->rc_buffer_size
= mlt_properties_get_int( properties
, "video_rc_buffer_size" );
437 c
->rc_buffer_aggressivity
= mlt_properties_get_double( properties
, "video_rc_buffer_aggressivity" );
438 c
->rc_initial_cplx
= mlt_properties_get_double( properties
, "video_rc_initial_cplx" );
439 c
->i_quant_factor
= mlt_properties_get_double( properties
, "video_i_qfactor" );
440 c
->b_quant_factor
= mlt_properties_get_double( properties
, "video_b_qfactor" );
441 c
->i_quant_offset
= mlt_properties_get_double( properties
, "video_i_qoffset" );
442 c
->b_quant_offset
= mlt_properties_get_double( properties
, "video_b_qoffset" );
443 c
->intra_quant_bias
= mlt_properties_get_int( properties
, "video_intra_quant_bias" );
444 c
->inter_quant_bias
= mlt_properties_get_int( properties
, "video_inter_quant_bias" );
445 c
->dct_algo
= mlt_properties_get_int( properties
, "dct_algo" );
446 c
->idct_algo
= mlt_properties_get_int( properties
, "idct_algo" );
447 c
->me_threshold
= mlt_properties_get_int( properties
, "me_threshold" );
448 c
->mb_threshold
= mlt_properties_get_int( properties
, "mb_threshold" );
449 c
->intra_dc_precision
= mlt_properties_get_int( properties
, "intra_dc_precision" );
450 c
->strict_std_compliance
= mlt_properties_get_int( properties
, "strict" );
451 c
->error_rate
= mlt_properties_get_int( properties
, "error_rate" );
452 c
->noise_reduction
= mlt_properties_get_int( properties
, "noise_reduction" );
453 c
->scenechange_threshold
= mlt_properties_get_int( properties
, "sc_threshold" );
454 c
->me_range
= mlt_properties_get_int( properties
, "me_range" );
455 c
->coder_type
= mlt_properties_get_int( properties
, "coder" );
456 c
->context_model
= mlt_properties_get_int( properties
, "context" );
457 c
->prediction_method
= mlt_properties_get_int( properties
, "predictor" );
458 c
->me_method
= mlt_properties_get_int( properties
, "me_method" );
462 fprintf( stderr
, "Could not allocate a stream for video\n" );
468 static AVFrame
*alloc_picture( int pix_fmt
, int width
, int height
)
471 AVFrame
*picture
= avcodec_alloc_frame();
473 // Determine size of the
474 int size
= avpicture_get_size(pix_fmt
, width
, height
);
476 // Allocate the picture buf
477 uint8_t *picture_buf
= av_malloc(size
);
479 // If we have both, then fill the image
480 if ( picture
!= NULL
&& picture_buf
!= NULL
)
482 // Fill the frame with the allocated buffer
483 avpicture_fill( (AVPicture
*)picture
, picture_buf
, pix_fmt
, width
, height
);
487 // Something failed - clean up what we can
489 av_free( picture_buf
);
496 static int open_video(AVFormatContext
*oc
, AVStream
*st
)
499 AVCodecContext
*c
= &st
->codec
;
501 // find the video encoder
502 AVCodec
*codec
= avcodec_find_encoder(c
->codec_id
);
504 // Open the codec safely
505 return codec
!= NULL
&& avcodec_open(c
, codec
) >= 0;
508 void close_video(AVFormatContext
*oc
, AVStream
*st
)
510 avcodec_close(&st
->codec
);
513 static inline long time_difference( struct timeval
*time1
)
515 struct timeval time2
;
516 gettimeofday( &time2
, NULL
);
517 return time2
.tv_sec
* 1000000 + time2
.tv_usec
- time1
->tv_sec
* 1000000 - time1
->tv_usec
;
520 /** The main thread - the argument is simply the consumer.
523 static void *consumer_thread( void *arg
)
525 // Map the argument to the object
526 mlt_consumer
this = arg
;
528 // Get the properties
529 mlt_properties properties
= mlt_consumer_properties( this );
531 // Get the terminate on pause property
532 int terminate_on_pause
= mlt_properties_get_int( properties
, "terminate_on_pause" );
535 // Determine if feed is slow (for realtime stuff)
536 int real_time_output
= mlt_properties_get_int( properties
, "real_time" );
541 // Get the frame rate
542 int fps
= mlt_properties_get_double( properties
, "fps" );
544 // Get width and height
545 int width
= mlt_properties_get_int( properties
, "width" );
546 int height
= mlt_properties_get_int( properties
, "height" );
547 int img_width
= width
;
548 int img_height
= height
;
550 // Get default audio properties
551 mlt_audio_format aud_fmt
= mlt_audio_pcm
;
552 int channels
= mlt_properties_get_int( properties
, "channels" );
553 int frequency
= mlt_properties_get_int( properties
, "frequency" );
557 // AVFormat audio buffer and frame size
558 int audio_outbuf_size
= 2 * 128 * 1024;
559 uint8_t *audio_outbuf
= av_malloc( audio_outbuf_size
);
560 int audio_input_frame_size
= 0;
562 // AVFormat video buffer and frame count
564 int video_outbuf_size
= ( 1024 * 1024 );
565 uint8_t *video_outbuf
= av_malloc( video_outbuf_size
);
567 // Used for the frame properties
568 mlt_frame frame
= NULL
;
569 mlt_properties frame_properties
= NULL
;
572 mlt_deque queue
= mlt_properties_get_data( properties
, "frame_queue", NULL
);
573 sample_fifo fifo
= mlt_properties_get_data( properties
, "sample_fifo", NULL
);
575 // Need two av pictures for converting
576 AVFrame
*output
= alloc_picture( PIX_FMT_YUV420P
, width
, height
);
577 AVFrame
*input
= alloc_picture( PIX_FMT_YUV422
, width
, height
);
579 // For receiving images from an mlt_frame
581 mlt_image_format img_fmt
= mlt_image_yuv422
;
583 // For receiving audio samples back from the fifo
584 int16_t *buffer
= av_malloc( 48000 * 2 );
587 // Allocate the context
588 AVFormatContext
*oc
= av_alloc_format_context( );
591 AVStream
*audio_st
= NULL
;
592 AVStream
*video_st
= NULL
;
595 double audio_pts
, video_pts
;
602 long int total_time
= 0;
604 // Determine the format
605 AVOutputFormat
*fmt
= NULL
;
606 char *filename
= mlt_properties_get( properties
, "target" );
607 char *format
= mlt_properties_get( properties
, "format" );
608 char *vcodec
= mlt_properties_get( properties
, "vcodec" );
609 char *acodec
= mlt_properties_get( properties
, "acodec" );
611 // Used to store and override codec ids
615 // Check for user selected format first
616 if ( format
!= NULL
)
617 fmt
= guess_format( format
, NULL
, NULL
);
619 // Otherwise check on the filename
620 if ( fmt
== NULL
&& filename
!= NULL
)
621 fmt
= guess_format( NULL
, filename
, NULL
);
623 // Otherwise default to mpeg
625 fmt
= guess_format( "mpeg", NULL
, NULL
);
627 // We need a filename - default to stdout?
628 if ( filename
== NULL
)
631 // Get the codec ids selected
632 audio_codec_id
= fmt
->audio_codec
;
633 video_codec_id
= fmt
->video_codec
;
635 // Check for audio codec overides
636 if ( acodec
!= NULL
)
638 AVCodec
*p
= first_avcodec
;
641 if ( !strcmp( p
->name
, acodec
) && p
->type
== CODEC_TYPE_AUDIO
)
646 audio_codec_id
= p
->id
;
648 fprintf( stderr
, "consumer_avcodec: audio codec %s unrecognised - ignoring\n", acodec
);
651 // Check for video codec overides
652 if ( vcodec
!= NULL
)
654 AVCodec
*p
= first_avcodec
;
657 if ( !strcmp( p
->name
, vcodec
) && p
->type
== CODEC_TYPE_VIDEO
)
662 video_codec_id
= p
->id
;
664 fprintf( stderr
, "consumer_avcodec: video codec %s unrecognised - ignoring\n", vcodec
);
667 // Update the output context
669 snprintf( oc
->filename
, sizeof(oc
->filename
), "%s", filename
);
671 // Add audio and video streams
672 if ( fmt
->video_codec
!= CODEC_ID_NONE
)
673 video_st
= add_video_stream( this, oc
, video_codec_id
);
674 if ( fmt
->audio_codec
!= CODEC_ID_NONE
)
675 audio_st
= add_audio_stream( this, oc
, audio_codec_id
);
677 // Set the parameters (even though we have none...)
678 if ( av_set_parameters(oc
, NULL
) >= 0 )
680 if ( video_st
&& !open_video( oc
, video_st
) )
683 audio_input_frame_size
= open_audio( oc
, audio_st
, audio_outbuf_size
);
685 // Open the output file, if needed
686 if ( !( fmt
->flags
& AVFMT_NOFILE
) )
688 if (url_fopen(&oc
->pb
, filename
, URL_RDWR
) < 0)
690 fprintf(stderr
, "Could not open '%s'\n", filename
);
691 mlt_properties_set_int( properties
, "running", 0 );
695 // Write the stream header, if any
696 if ( mlt_properties_get_int( properties
, "running" ) )
697 av_write_header( oc
);
701 fprintf(stderr
, "Invalid output format parameters\n");
702 mlt_properties_set_int( properties
, "running", 0 );
705 // Last check - need at least one stream
706 if ( audio_st
== NULL
&& video_st
== NULL
)
707 mlt_properties_set_int( properties
, "running", 0 );
709 // Get the starting time (can ignore the times above)
710 gettimeofday( &ante
, NULL
);
712 // Loop while running
713 while( mlt_properties_get_int( properties
, "running" ) && !terminated
)
716 frame
= mlt_consumer_rt_frame( this );
718 // Check that we have a frame to work with
721 // Increment frames despatched
724 // Default audio args
725 frame_properties
= mlt_frame_properties( frame
);
727 // Check for the terminated condition
728 terminated
= terminate_on_pause
&& mlt_properties_get_double( frame_properties
, "_speed" ) == 0.0;
730 // Get audio and append to the fifo
733 samples
= mlt_sample_calculator( fps
, frequency
, count
);
734 mlt_frame_get_audio( frame
, &pcm
, &aud_fmt
, &frequency
, &channels
, &samples
);
735 sample_fifo_append( fifo
, pcm
, samples
* channels
);
736 total_time
+= ( samples
* 1000000 ) / frequency
;
741 mlt_deque_push_back( queue
, frame
);
743 mlt_frame_close( frame
);
746 // While we have stuff to process, process...
749 // Compute current audio and video time
751 audio_pts
= (double)audio_st
->pts
.val
* oc
->pts_num
/ oc
->pts_den
;
756 video_pts
= (double)video_st
->pts
.val
* oc
->pts_num
/ oc
->pts_den
;
760 // Write interleaved audio and video frames
761 if ( !video_st
|| ( video_st
&& audio_st
&& audio_pts
< video_pts
) )
763 if ( channels
* audio_input_frame_size
< sample_fifo_used( fifo
) )
768 c
= &audio_st
->codec
;
770 sample_fifo_fetch( fifo
, buffer
, channels
* audio_input_frame_size
);
772 out_size
= avcodec_encode_audio( c
, audio_outbuf
, audio_outbuf_size
, buffer
);
774 // Write the compressed frame in the media file
775 if (av_write_frame(oc
, audio_st
->index
, audio_outbuf
, out_size
) != 0)
776 fprintf(stderr
, "Error while writing audio frame\n");
785 if ( mlt_deque_count( queue
) )
790 frame
= mlt_deque_pop_front( queue
);
791 frame_properties
= mlt_frame_properties( frame
);
793 c
= &video_st
->codec
;
795 if ( mlt_properties_get_int( frame_properties
, "rendered" ) )
802 mlt_frame_get_image( frame
, &image
, &img_fmt
, &img_width
, &img_height
, 0 );
806 for ( i
= 0; i
< height
; i
++ )
808 p
= input
->data
[ 0 ] + i
* input
->linesize
[ 0 ];
817 img_convert( ( AVPicture
* )output
, PIX_FMT_YUV420P
, ( AVPicture
* )input
, PIX_FMT_YUV422
, width
, height
);
820 if (oc
->oformat
->flags
& AVFMT_RAWPICTURE
)
822 // raw video case. The API will change slightly in the near future for that
823 ret
= av_write_frame(oc
, video_st
->index
, (uint8_t *)output
, sizeof(AVPicture
));
828 output
->quality
= video_st
->quality
;
831 out_size
= avcodec_encode_video(c
, video_outbuf
, video_outbuf_size
, output
);
833 // If zero size, it means the image was buffered
836 // write the compressed frame in the media file
837 // XXX: in case of B frames, the pts is not yet valid
838 ret
= av_write_frame( oc
, video_st
->index
, video_outbuf
, out_size
);
842 mlt_frame_close( frame
);
851 if ( real_time_output
&& frames
% 25 == 0 )
853 long passed
= time_difference( &ante
);
854 long pending
= ( ( ( long )sample_fifo_used( fifo
) * 1000 ) / frequency
) * 1000;
856 if ( passed
< total_time
)
858 long total
= ( total_time
- passed
);
859 struct timespec t
= { total
/ 1000000, ( total
% 1000000 ) * 1000 };
860 nanosleep( &t
, NULL
);
867 close_video(oc
, video_st
);
869 close_audio(oc
, audio_st
);
871 // Write the trailer, if any
872 av_write_trailer(oc
);
875 for(i
= 0; i
< oc
->nb_streams
; i
++)
876 av_freep(&oc
->streams
[i
]);
878 // Close the output file
879 if (!(fmt
->flags
& AVFMT_NOFILE
))
882 // Clean up input and output frames
883 av_free( output
->data
[0] );
885 av_free( input
->data
[0] );
887 av_free( video_outbuf
);
893 // Just in case we terminated on pause
894 mlt_properties_set_int( properties
, "running", 0 );
899 /** Close the consumer.
902 static void consumer_close( mlt_consumer
this )
905 mlt_consumer_stop( this );
908 mlt_consumer_close( this );