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
39 // This structure should be extended and made globally available in mlt
51 *sample_fifo
, sample_fifo_s
;
53 sample_fifo
sample_fifo_init( int frequency
, int channels
)
55 sample_fifo
this = calloc( 1, sizeof( sample_fifo_s
) );
56 this->frequency
= frequency
;
57 this->channels
= channels
;
61 // sample_fifo_clear and check are temporarily aborted (not working as intended)
63 void sample_fifo_clear( sample_fifo
this, double time
)
65 int words
= ( float )( time
- this->time
) * this->frequency
* this->channels
;
66 if ( ( int )( ( float )time
* 100 ) < ( int )( ( float )this->time
* 100 ) && this->used
> words
&& words
> 0 )
68 memmove( this->buffer
, &this->buffer
[ words
], ( this->used
- words
) * sizeof( int16_t ) );
72 else if ( ( int )( ( float )time
* 100 ) != ( int )( ( float )this->time
* 100 ) )
79 void sample_fifo_check( sample_fifo
this, double time
)
81 if ( this->used
== 0 )
83 if ( ( int )( ( float )time
* 100 ) < ( int )( ( float )this->time
* 100 ) )
88 void sample_fifo_append( sample_fifo
this, int16_t *samples
, int count
)
90 if ( ( this->size
- this->used
) < count
)
92 this->size
+= count
* 5;
93 this->buffer
= realloc( this->buffer
, this->size
* sizeof( int16_t ) );
96 memcpy( &this->buffer
[ this->used
], samples
, count
* sizeof( int16_t ) );
100 int sample_fifo_used( sample_fifo
this )
105 int sample_fifo_fetch( sample_fifo
this, int16_t *samples
, int count
)
107 if ( count
> this->used
)
110 memcpy( samples
, this->buffer
, count
* sizeof( int16_t ) );
112 memmove( this->buffer
, &this->buffer
[ count
], this->used
* sizeof( int16_t ) );
114 this->time
+= ( double )count
/ this->channels
/ this->frequency
;
119 void sample_fifo_close( sample_fifo
this )
121 free( this->buffer
);
125 // Forward references.
126 static int consumer_start( mlt_consumer
this );
127 static int consumer_stop( mlt_consumer
this );
128 static int consumer_is_stopped( mlt_consumer
this );
129 static void *consumer_thread( void *arg
);
130 static void consumer_close( mlt_consumer
this );
132 /** Initialise the dv consumer.
135 mlt_consumer
consumer_avformat_init( char *arg
)
137 // Allocate the consumer
138 mlt_consumer
this = mlt_consumer_new( );
140 // If memory allocated and initialises without error
143 // Get properties from the consumer
144 mlt_properties properties
= mlt_consumer_properties( this );
146 // Assign close callback
147 this->close
= consumer_close
;
149 // Interpret the argument
151 mlt_properties_set( properties
, "target", arg
);
153 // sample and frame queue
154 mlt_properties_set_data( properties
, "frame_queue", mlt_deque_init( ), 0, ( mlt_destructor
)mlt_deque_close
, NULL
);
156 // Set avformat defaults (all lifted from ffmpeg.c)
157 mlt_properties_set_int( properties
, "audio_bit_rate", 128000 );
158 mlt_properties_set_int( properties
, "video_bit_rate", 200 * 1000 );
159 mlt_properties_set_int( properties
, "video_bit_rate_tolerance", 4000 * 1000 );
160 mlt_properties_set_int( properties
, "frame_rate_base", 1 );
161 mlt_properties_set_int( properties
, "gop_size", 12 );
162 mlt_properties_set_int( properties
, "b_frames", 0 );
163 mlt_properties_set_int( properties
, "mb_decision", FF_MB_DECISION_SIMPLE
);
164 mlt_properties_set_double( properties
, "qscale", 0 );
165 mlt_properties_set_int( properties
, "me_method", ME_EPZS
);
166 mlt_properties_set_int( properties
, "mb_cmp", FF_CMP_SAD
);
167 mlt_properties_set_int( properties
, "ildct_cmp", FF_CMP_VSAD
);
168 mlt_properties_set_int( properties
, "sub_cmp", FF_CMP_SAD
);
169 mlt_properties_set_int( properties
, "cmp", FF_CMP_SAD
);
170 mlt_properties_set_int( properties
, "pre_cmp", FF_CMP_SAD
);
171 mlt_properties_set_int( properties
, "pre_me", 0 );
172 mlt_properties_set_double( properties
, "lumi_mask", 0 );
173 mlt_properties_set_double( properties
, "dark_mask", 0 );
174 mlt_properties_set_double( properties
, "scplx_mask", 0 );
175 mlt_properties_set_double( properties
, "tcplx_mask", 0 );
176 mlt_properties_set_double( properties
, "p_mask", 0 );
177 mlt_properties_set_int( properties
, "qns", 0 );
178 mlt_properties_set_int( properties
, "video_qmin", 2 );
179 mlt_properties_set_int( properties
, "video_qmax", 31 );
180 mlt_properties_set_int( properties
, "video_lmin", 2*FF_QP2LAMBDA
);
181 mlt_properties_set_int( properties
, "video_lmax", 31*FF_QP2LAMBDA
);
182 mlt_properties_set_int( properties
, "video_mb_qmin", 2 );
183 mlt_properties_set_int( properties
, "video_mb_qmax", 31 );
184 mlt_properties_set_int( properties
, "video_qdiff", 3 );
185 mlt_properties_set_double( properties
, "video_qblur", 0.5 );
186 mlt_properties_set_double( properties
, "video_qcomp", 0.5 );
187 mlt_properties_set_int( properties
, "video_rc_max_rate", 0 );
188 mlt_properties_set_int( properties
, "video_rc_min_rate", 0 );
189 mlt_properties_set_int( properties
, "video_rc_buffer_size", 0 );
190 mlt_properties_set_double( properties
, "video_rc_buffer_aggressivity", 1.0 );
191 mlt_properties_set_double( properties
, "video_rc_initial_cplx", 0 );
192 mlt_properties_set_double( properties
, "video_i_qfactor", 1.25 );
193 mlt_properties_set_double( properties
, "video_b_qfactor", 1.25 );
194 mlt_properties_set_double( properties
, "video_i_qoffset", -0.8 );
195 mlt_properties_set_double( properties
, "video_b_qoffset", 0 );
196 mlt_properties_set_int( properties
, "video_intra_quant_bias", FF_DEFAULT_QUANT_BIAS
);
197 mlt_properties_set_int( properties
, "video_inter_quant_bias", FF_DEFAULT_QUANT_BIAS
);
198 mlt_properties_set_int( properties
, "dct_algo", 0 );
199 mlt_properties_set_int( properties
, "idct_algo", 0 );
200 mlt_properties_set_int( properties
, "me_threshold", 0 );
201 mlt_properties_set_int( properties
, "mb_threshold", 0 );
202 mlt_properties_set_int( properties
, "intra_dc_precision", 0 );
203 mlt_properties_set_int( properties
, "strict", 0 );
204 mlt_properties_set_int( properties
, "error_rate", 0 );
205 mlt_properties_set_int( properties
, "noise_reduction", 0 );
206 mlt_properties_set_int( properties
, "sc_threshold", 0 );
207 mlt_properties_set_int( properties
, "me_range", 0 );
208 mlt_properties_set_int( properties
, "coder", 0 );
209 mlt_properties_set_int( properties
, "context", 0 );
210 mlt_properties_set_int( properties
, "predictor", 0 );
212 // Ensure termination at end of the stream
213 mlt_properties_set_int( properties
, "terminate_on_pause", 1 );
215 // Set up start/stop/terminated callbacks
216 this->start
= consumer_start
;
217 this->stop
= consumer_stop
;
218 this->is_stopped
= consumer_is_stopped
;
225 /** Start the consumer.
228 static int consumer_start( mlt_consumer
this )
230 // Get the properties
231 mlt_properties properties
= mlt_consumer_properties( this );
233 // Check that we're not already running
234 if ( !mlt_properties_get_int( properties
, "running" ) )
237 pthread_t
*thread
= calloc( 1, sizeof( pthread_t
) );
238 pthread_attr_t thread_attributes
;
240 // Get the width and height
241 int width
= mlt_properties_get_int( properties
, "width" );
242 int height
= mlt_properties_get_int( properties
, "height" );
244 // Obtain the size property
245 char *size
= mlt_properties_get( properties
, "size" );
251 if ( sscanf( size
, "%dx%d", &tw
, &th
) == 2 && tw
> 0 && th
> 0 )
258 fprintf( stderr
, "consumer_avformat: Invalid size property %s - ignoring.\n", size
);
262 // Now ensure we honour the multiple of two requested by libavformat
263 mlt_properties_set_int( properties
, "width", ( width
/ 2 ) * 2 );
264 mlt_properties_set_int( properties
, "height", ( height
/ 2 ) * 2 );
266 // Assign the thread to properties
267 mlt_properties_set_data( properties
, "thread", thread
, sizeof( pthread_t
), free
, NULL
);
269 // Set the running state
270 mlt_properties_set_int( properties
, "running", 1 );
272 // Inherit the scheduling priority
273 pthread_attr_init( &thread_attributes
);
274 pthread_attr_setinheritsched( &thread_attributes
, PTHREAD_INHERIT_SCHED
);
277 pthread_create( thread
, &thread_attributes
, consumer_thread
, this );
282 /** Stop the consumer.
285 static int consumer_stop( mlt_consumer
this )
287 // Get the properties
288 mlt_properties properties
= mlt_consumer_properties( this );
290 // Check that we're running
291 if ( mlt_properties_get_int( properties
, "running" ) )
294 pthread_t
*thread
= mlt_properties_get_data( properties
, "thread", NULL
);
297 mlt_properties_set_int( properties
, "running", 0 );
299 // Wait for termination
300 pthread_join( *thread
, NULL
);
306 /** Determine if the consumer is stopped.
309 static int consumer_is_stopped( mlt_consumer
this )
311 // Get the properties
312 mlt_properties properties
= mlt_consumer_properties( this );
313 return !mlt_properties_get_int( properties
, "running" );
316 /** Add an audio output stream
319 static AVStream
*add_audio_stream( mlt_consumer
this, AVFormatContext
*oc
, int codec_id
)
321 // Get the properties
322 mlt_properties properties
= mlt_consumer_properties( this );
324 // Create a new stream
325 AVStream
*st
= av_new_stream( oc
, 1 );
327 // If created, then initialise from properties
330 AVCodecContext
*c
= &st
->codec
;
331 c
->codec_id
= codec_id
;
332 c
->codec_type
= CODEC_TYPE_AUDIO
;
334 // Put sample parameters
335 c
->bit_rate
= mlt_properties_get_int( properties
, "audio_bit_rate" );
336 c
->sample_rate
= mlt_properties_get_int( properties
, "frequency" );
337 c
->channels
= mlt_properties_get_int( properties
, "channels" );
341 fprintf( stderr
, "Could not allocate a stream for audio\n" );
347 static int open_audio( AVFormatContext
*oc
, AVStream
*st
, int audio_outbuf_size
)
349 // We will return the audio input size from here
350 int audio_input_frame_size
= 0;
353 AVCodecContext
*c
= &st
->codec
;
356 AVCodec
*codec
= avcodec_find_encoder( c
->codec_id
);
358 // Continue if codec found and we can open it
359 if ( codec
!= NULL
&& avcodec_open(c
, codec
) >= 0 )
361 // ugly hack for PCM codecs (will be removed ASAP with new PCM
362 // support to compute the input frame size in samples
363 if ( c
->frame_size
<= 1 )
365 audio_input_frame_size
= audio_outbuf_size
/ c
->channels
;
366 switch(st
->codec
.codec_id
)
368 case CODEC_ID_PCM_S16LE
:
369 case CODEC_ID_PCM_S16BE
:
370 case CODEC_ID_PCM_U16LE
:
371 case CODEC_ID_PCM_U16BE
:
372 audio_input_frame_size
>>= 1;
380 audio_input_frame_size
= c
->frame_size
;
383 // Some formats want stream headers to be seperate (hmm)
384 if( !strcmp( oc
->oformat
->name
, "mp4" ) ||
385 !strcmp( oc
->oformat
->name
, "mov" ) ||
386 !strcmp( oc
->oformat
->name
, "3gp" ) )
387 c
->flags
|= CODEC_FLAG_GLOBAL_HEADER
;
391 fprintf( stderr
, "Unable to encode audio - disabling audio output.\n" );
394 return audio_input_frame_size
;
397 static void close_audio( AVFormatContext
*oc
, AVStream
*st
)
399 avcodec_close( &st
->codec
);
402 /** Add a video output stream
405 static AVStream
*add_video_stream( mlt_consumer
this, AVFormatContext
*oc
, int codec_id
)
407 // Get the properties
408 mlt_properties properties
= mlt_consumer_properties( this );
410 // Create a new stream
411 AVStream
*st
= av_new_stream( oc
, 0 );
415 AVCodecContext
*c
= &st
->codec
;
416 c
->codec_id
= codec_id
;
417 c
->codec_type
= CODEC_TYPE_VIDEO
;
419 // put sample parameters
420 c
->bit_rate
= mlt_properties_get_int( properties
, "video_bit_rate" );
421 c
->bit_rate_tolerance
= mlt_properties_get_int( properties
, "video_bit_rate_tolerance" );
422 c
->width
= mlt_properties_get_int( properties
, "width" );
423 c
->height
= mlt_properties_get_int( properties
, "height" );
424 c
->frame_rate
= mlt_properties_get_double( properties
, "fps" );
425 c
->frame_rate_base
= mlt_properties_get_double( properties
, "frame_rate_base" );
426 c
->frame_rate_base
= 1;
427 c
->gop_size
= mlt_properties_get_int( properties
, "gop_size" );
429 if ( mlt_properties_get_int( properties
, "b_frames" ) )
431 c
->max_b_frames
= mlt_properties_get_int( properties
, "b_frames" );
432 c
->b_frame_strategy
= 0;
433 c
->b_quant_factor
= 2.0;
436 c
->mb_decision
= mlt_properties_get_int( properties
, "mb_decision" );
437 c
->sample_aspect_ratio
= av_d2q( mlt_properties_get_double( properties
, "aspect_ratio" ), 255 );
438 c
->mb_cmp
= mlt_properties_get_int( properties
, "mb_cmp" );
439 c
->ildct_cmp
= mlt_properties_get_int( properties
, "ildct_cmp" );
440 c
->me_sub_cmp
= mlt_properties_get_int( properties
, "sub_cmp" );
441 c
->me_cmp
= mlt_properties_get_int( properties
, "cmp" );
442 c
->me_pre_cmp
= mlt_properties_get_int( properties
, "pre_cmp" );
443 c
->pre_me
= mlt_properties_get_int( properties
, "pre_me" );
444 c
->lumi_masking
= mlt_properties_get_double( properties
, "lumi_mask" );
445 c
->dark_masking
= mlt_properties_get_double( properties
, "dark_mask" );
446 c
->spatial_cplx_masking
= mlt_properties_get_double( properties
, "scplx_mask" );
447 c
->temporal_cplx_masking
= mlt_properties_get_double( properties
, "tcplx_mask" );
448 c
->p_masking
= mlt_properties_get_double( properties
, "p_mask" );
449 c
->quantizer_noise_shaping
= mlt_properties_get_int( properties
, "qns" );
450 c
->qmin
= mlt_properties_get_int( properties
, "video_qmin" );
451 c
->qmax
= mlt_properties_get_int( properties
, "video_qmax" );
452 c
->lmin
= mlt_properties_get_int( properties
, "video_lmin" );
453 c
->lmax
= mlt_properties_get_int( properties
, "video_lmax" );
454 c
->mb_qmin
= mlt_properties_get_int( properties
, "video_mb_qmin" );
455 c
->mb_qmax
= mlt_properties_get_int( properties
, "video_mb_qmax" );
456 c
->max_qdiff
= mlt_properties_get_int( properties
, "video_qdiff" );
457 c
->qblur
= mlt_properties_get_double( properties
, "video_qblur" );
458 c
->qcompress
= mlt_properties_get_double( properties
, "video_qcomp" );
460 if ( mlt_properties_get_double( properties
, "qscale" ) > 0 )
462 c
->flags
|= CODEC_FLAG_QSCALE
;
463 st
->quality
= FF_QP2LAMBDA
* mlt_properties_get_double( properties
, "qscale" );
466 // Some formats want stream headers to be seperate (hmm)
467 if( !strcmp( oc
->oformat
->name
, "mp4" ) ||
468 !strcmp( oc
->oformat
->name
, "mov" ) ||
469 !strcmp( oc
->oformat
->name
, "3gp" ) )
470 c
->flags
|= CODEC_FLAG_GLOBAL_HEADER
;
472 c
->rc_max_rate
= mlt_properties_get_int( properties
, "video_rc_max_rate" );
473 c
->rc_min_rate
= mlt_properties_get_int( properties
, "video_rc_min_rate" );
474 c
->rc_buffer_size
= mlt_properties_get_int( properties
, "video_rc_buffer_size" );
475 c
->rc_buffer_aggressivity
= mlt_properties_get_double( properties
, "video_rc_buffer_aggressivity" );
476 c
->rc_initial_cplx
= mlt_properties_get_double( properties
, "video_rc_initial_cplx" );
477 c
->i_quant_factor
= mlt_properties_get_double( properties
, "video_i_qfactor" );
478 c
->b_quant_factor
= mlt_properties_get_double( properties
, "video_b_qfactor" );
479 c
->i_quant_offset
= mlt_properties_get_double( properties
, "video_i_qoffset" );
480 c
->b_quant_offset
= mlt_properties_get_double( properties
, "video_b_qoffset" );
481 c
->intra_quant_bias
= mlt_properties_get_int( properties
, "video_intra_quant_bias" );
482 c
->inter_quant_bias
= mlt_properties_get_int( properties
, "video_inter_quant_bias" );
483 c
->dct_algo
= mlt_properties_get_int( properties
, "dct_algo" );
484 c
->idct_algo
= mlt_properties_get_int( properties
, "idct_algo" );
485 c
->me_threshold
= mlt_properties_get_int( properties
, "me_threshold" );
486 c
->mb_threshold
= mlt_properties_get_int( properties
, "mb_threshold" );
487 c
->intra_dc_precision
= mlt_properties_get_int( properties
, "intra_dc_precision" );
488 c
->strict_std_compliance
= mlt_properties_get_int( properties
, "strict" );
489 c
->error_rate
= mlt_properties_get_int( properties
, "error_rate" );
490 c
->noise_reduction
= mlt_properties_get_int( properties
, "noise_reduction" );
491 c
->scenechange_threshold
= mlt_properties_get_int( properties
, "sc_threshold" );
492 c
->me_range
= mlt_properties_get_int( properties
, "me_range" );
493 c
->coder_type
= mlt_properties_get_int( properties
, "coder" );
494 c
->context_model
= mlt_properties_get_int( properties
, "context" );
495 c
->prediction_method
= mlt_properties_get_int( properties
, "predictor" );
496 c
->me_method
= mlt_properties_get_int( properties
, "me_method" );
500 fprintf( stderr
, "Could not allocate a stream for video\n" );
506 static AVFrame
*alloc_picture( int pix_fmt
, int width
, int height
)
509 AVFrame
*picture
= avcodec_alloc_frame();
511 // Determine size of the
512 int size
= avpicture_get_size(pix_fmt
, width
, height
);
514 // Allocate the picture buf
515 uint8_t *picture_buf
= av_malloc(size
);
517 // If we have both, then fill the image
518 if ( picture
!= NULL
&& picture_buf
!= NULL
)
520 // Fill the frame with the allocated buffer
521 avpicture_fill( (AVPicture
*)picture
, picture_buf
, pix_fmt
, width
, height
);
525 // Something failed - clean up what we can
527 av_free( picture_buf
);
534 static int open_video(AVFormatContext
*oc
, AVStream
*st
)
537 AVCodecContext
*c
= &st
->codec
;
539 // find the video encoder
540 AVCodec
*codec
= avcodec_find_encoder(c
->codec_id
);
542 // Open the codec safely
543 return codec
!= NULL
&& avcodec_open(c
, codec
) >= 0;
546 void close_video(AVFormatContext
*oc
, AVStream
*st
)
548 avcodec_close(&st
->codec
);
551 static inline long time_difference( struct timeval
*time1
)
553 struct timeval time2
;
554 gettimeofday( &time2
, NULL
);
555 return time2
.tv_sec
* 1000000 + time2
.tv_usec
- time1
->tv_sec
* 1000000 - time1
->tv_usec
;
558 /** The main thread - the argument is simply the consumer.
561 static void *consumer_thread( void *arg
)
563 // Map the argument to the object
564 mlt_consumer
this = arg
;
566 // Get the properties
567 mlt_properties properties
= mlt_consumer_properties( this );
569 // Get the terminate on pause property
570 int terminate_on_pause
= mlt_properties_get_int( properties
, "terminate_on_pause" );
573 // Determine if feed is slow (for realtime stuff)
574 int real_time_output
= mlt_properties_get_int( properties
, "real_time" );
579 // Get the frame rate
580 int fps
= mlt_properties_get_double( properties
, "fps" );
582 // Get width and height
583 int width
= mlt_properties_get_int( properties
, "width" );
584 int height
= mlt_properties_get_int( properties
, "height" );
585 int img_width
= width
;
586 int img_height
= height
;
588 // Get default audio properties
589 mlt_audio_format aud_fmt
= mlt_audio_pcm
;
590 int channels
= mlt_properties_get_int( properties
, "channels" );
591 int frequency
= mlt_properties_get_int( properties
, "frequency" );
595 // AVFormat audio buffer and frame size
596 int audio_outbuf_size
= 10000;
597 uint8_t *audio_outbuf
= av_malloc( audio_outbuf_size
);
598 int audio_input_frame_size
= 0;
600 // AVFormat video buffer and frame count
602 int video_outbuf_size
= ( 1024 * 1024 );
603 uint8_t *video_outbuf
= av_malloc( video_outbuf_size
);
605 // Used for the frame properties
606 mlt_frame frame
= NULL
;
607 mlt_properties frame_properties
= NULL
;
610 mlt_deque queue
= mlt_properties_get_data( properties
, "frame_queue", NULL
);
611 sample_fifo fifo
= mlt_properties_get_data( properties
, "sample_fifo", NULL
);
613 // Need two av pictures for converting
614 AVFrame
*output
= alloc_picture( PIX_FMT_YUV420P
, width
, height
);
615 AVFrame
*input
= alloc_picture( PIX_FMT_YUV422
, width
, height
);
617 // For receiving images from an mlt_frame
619 mlt_image_format img_fmt
= mlt_image_yuv422
;
621 // For receiving audio samples back from the fifo
622 int16_t *buffer
= av_malloc( 48000 * 2 );
625 // Allocate the context
626 AVFormatContext
*oc
= av_alloc_format_context( );
629 AVStream
*audio_st
= NULL
;
630 AVStream
*video_st
= NULL
;
633 double audio_pts
, video_pts
;
640 long int total_time
= 0;
642 // Determine the format
643 AVOutputFormat
*fmt
= NULL
;
644 char *filename
= mlt_properties_get( properties
, "target" );
645 char *format
= mlt_properties_get( properties
, "format" );
646 char *vcodec
= mlt_properties_get( properties
, "vcodec" );
647 char *acodec
= mlt_properties_get( properties
, "acodec" );
649 // Used to store and override codec ids
653 // Check for user selected format first
654 if ( format
!= NULL
)
655 fmt
= guess_format( format
, NULL
, NULL
);
657 // Otherwise check on the filename
658 if ( fmt
== NULL
&& filename
!= NULL
)
659 fmt
= guess_format( NULL
, filename
, NULL
);
661 // Otherwise default to mpeg
663 fmt
= guess_format( "mpeg", NULL
, NULL
);
665 // We need a filename - default to stdout?
666 if ( filename
== NULL
|| !strcmp( filename
, "" ) )
669 // Get the codec ids selected
670 audio_codec_id
= fmt
->audio_codec
;
671 video_codec_id
= fmt
->video_codec
;
673 // Check for audio codec overides
674 if ( acodec
!= NULL
)
676 AVCodec
*p
= first_avcodec
;
679 if ( !strcmp( p
->name
, acodec
) && p
->type
== CODEC_TYPE_AUDIO
)
684 audio_codec_id
= p
->id
;
686 fprintf( stderr
, "consumer_avcodec: audio codec %s unrecognised - ignoring\n", acodec
);
689 // Check for video codec overides
690 if ( vcodec
!= NULL
)
692 AVCodec
*p
= first_avcodec
;
695 if ( !strcmp( p
->name
, vcodec
) && p
->type
== CODEC_TYPE_VIDEO
)
700 video_codec_id
= p
->id
;
702 fprintf( stderr
, "consumer_avcodec: video codec %s unrecognised - ignoring\n", vcodec
);
705 // Update the output context
707 snprintf( oc
->filename
, sizeof(oc
->filename
), "%s", filename
);
709 // Add audio and video streams
710 if ( fmt
->video_codec
!= CODEC_ID_NONE
)
711 video_st
= add_video_stream( this, oc
, video_codec_id
);
712 if ( fmt
->audio_codec
!= CODEC_ID_NONE
)
713 audio_st
= add_audio_stream( this, oc
, audio_codec_id
);
715 // Set the parameters (even though we have none...)
716 if ( av_set_parameters(oc
, NULL
) >= 0 )
718 if ( video_st
&& !open_video( oc
, video_st
) )
721 audio_input_frame_size
= open_audio( oc
, audio_st
, audio_outbuf_size
);
723 // Open the output file, if needed
724 if ( !( fmt
->flags
& AVFMT_NOFILE
) )
726 if (url_fopen(&oc
->pb
, filename
, URL_WRONLY
) < 0)
728 fprintf(stderr
, "Could not open '%s'\n", filename
);
729 mlt_properties_set_int( properties
, "running", 0 );
733 // Write the stream header, if any
734 if ( mlt_properties_get_int( properties
, "running" ) )
735 av_write_header( oc
);
739 fprintf(stderr
, "Invalid output format parameters\n");
740 mlt_properties_set_int( properties
, "running", 0 );
743 // Last check - need at least one stream
744 if ( audio_st
== NULL
&& video_st
== NULL
)
745 mlt_properties_set_int( properties
, "running", 0 );
747 // Get the starting time (can ignore the times above)
748 gettimeofday( &ante
, NULL
);
750 // Loop while running
751 while( mlt_properties_get_int( properties
, "running" ) && !terminated
)
754 frame
= mlt_consumer_rt_frame( this );
756 // Check that we have a frame to work with
759 // Increment frames despatched
762 // Default audio args
763 frame_properties
= mlt_frame_properties( frame
);
765 // Check for the terminated condition
766 terminated
= terminate_on_pause
&& mlt_properties_get_double( frame_properties
, "_speed" ) == 0.0;
768 // Get audio and append to the fifo
771 samples
= mlt_sample_calculator( fps
, frequency
, count
);
772 mlt_frame_get_audio( frame
, &pcm
, &aud_fmt
, &frequency
, &channels
, &samples
);
774 // Create the fifo if we don't have one
777 fifo
= sample_fifo_init( frequency
, channels
);
778 mlt_properties_set_data( properties
, "sample_fifo", fifo
, 0, ( mlt_destructor
)sample_fifo_close
, NULL
);
781 // Append the samples
782 sample_fifo_append( fifo
, pcm
, samples
* channels
);
783 total_time
+= ( samples
* 1000000 ) / frequency
;
788 mlt_deque_push_back( queue
, frame
);
790 mlt_frame_close( frame
);
793 // While we have stuff to process, process...
796 // Compute current audio and video time
798 audio_pts
= (double)audio_st
->pts
.val
* audio_st
->time_base
.num
/ audio_st
->time_base
.den
;
803 video_pts
= (double)video_st
->pts
.val
* video_st
->time_base
.num
/ video_st
->time_base
.den
;
807 // Write interleaved audio and video frames
808 if ( !video_st
|| ( video_st
&& audio_st
&& audio_pts
< video_pts
) )
810 if ( channels
* audio_input_frame_size
< sample_fifo_used( fifo
) )
814 av_init_packet( &pkt
);
816 c
= &audio_st
->codec
;
818 sample_fifo_fetch( fifo
, buffer
, channels
* audio_input_frame_size
);
820 pkt
.size
= avcodec_encode_audio( c
, audio_outbuf
, audio_outbuf_size
, buffer
);
821 // Write the compressed frame in the media file
822 if ( c
->coded_frame
)
823 pkt
.pts
= c
->coded_frame
->pts
;
824 pkt
.flags
|= PKT_FLAG_KEY
;
825 pkt
.stream_index
= audio_st
->index
;
826 pkt
.data
= audio_outbuf
;
828 if ( av_interleaved_write_frame( oc
, &pkt
) != 0)
829 fprintf(stderr
, "Error while writing audio frame\n");
838 if ( mlt_deque_count( queue
) )
843 frame
= mlt_deque_pop_front( queue
);
844 frame_properties
= mlt_frame_properties( frame
);
846 c
= &video_st
->codec
;
848 if ( mlt_properties_get_int( frame_properties
, "rendered" ) )
855 mlt_events_fire( properties
, "consumer-frame-show", frame
, NULL
);
856 mlt_frame_get_image( frame
, &image
, &img_fmt
, &img_width
, &img_height
, 0 );
860 for ( i
= 0; i
< height
; i
++ )
862 p
= input
->data
[ 0 ] + i
* input
->linesize
[ 0 ];
871 img_convert( ( AVPicture
* )output
, PIX_FMT_YUV420P
, ( AVPicture
* )input
, PIX_FMT_YUV422
, width
, height
);
874 if (oc
->oformat
->flags
& AVFMT_RAWPICTURE
)
876 // raw video case. The API will change slightly in the near future for that
878 av_init_packet(&pkt
);
880 pkt
.flags
|= PKT_FLAG_KEY
;
881 pkt
.stream_index
= video_st
->index
;
882 pkt
.data
= (uint8_t *)output
;
883 pkt
.size
= sizeof(AVPicture
);
885 ret
= av_write_frame(oc
, &pkt
);
890 output
->quality
= video_st
->quality
;
893 out_size
= avcodec_encode_video(c
, video_outbuf
, video_outbuf_size
, output
);
895 // If zero size, it means the image was buffered
899 av_init_packet( &pkt
);
901 if ( c
->coded_frame
)
902 pkt
.pts
= c
->coded_frame
->pts
;
903 if(c
->coded_frame
->key_frame
)
904 pkt
.flags
|= PKT_FLAG_KEY
;
905 pkt
.stream_index
= video_st
->index
;
906 pkt
.data
= video_outbuf
;
909 // write the compressed frame in the media file
910 ret
= av_interleaved_write_frame(oc
, &pkt
);
914 mlt_frame_close( frame
);
923 if ( real_time_output
&& frames
% 25 == 0 )
925 long passed
= time_difference( &ante
);
928 long pending
= ( ( ( long )sample_fifo_used( fifo
) * 1000 ) / frequency
) * 1000;
931 if ( passed
< total_time
)
933 long total
= ( total_time
- passed
);
934 struct timespec t
= { total
/ 1000000, ( total
% 1000000 ) * 1000 };
935 nanosleep( &t
, NULL
);
942 close_video(oc
, video_st
);
944 close_audio(oc
, audio_st
);
946 // Write the trailer, if any
947 av_write_trailer(oc
);
950 for(i
= 0; i
< oc
->nb_streams
; i
++)
951 av_freep(&oc
->streams
[i
]);
953 // Close the output file
954 if (!(fmt
->flags
& AVFMT_NOFILE
))
957 // Clean up input and output frames
958 av_free( output
->data
[0] );
960 av_free( input
->data
[0] );
962 av_free( video_outbuf
);
968 // Just in case we terminated on pause
969 mlt_properties_set_int( properties
, "running", 0 );
971 mlt_consumer_stopped( this );
976 /** Close the consumer.
979 static void consumer_close( mlt_consumer
this )
982 mlt_consumer_stop( this );
985 mlt_consumer_close( this );