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 library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library 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 GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, 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
36 // avformat header files
43 // This structure should be extended and made globally available in mlt
55 *sample_fifo
, sample_fifo_s
;
57 sample_fifo
sample_fifo_init( int frequency
, int channels
)
59 sample_fifo
this = calloc( 1, sizeof( sample_fifo_s
) );
60 this->frequency
= frequency
;
61 this->channels
= channels
;
65 // sample_fifo_clear and check are temporarily aborted (not working as intended)
67 void sample_fifo_clear( sample_fifo
this, double time
)
69 int words
= ( float )( time
- this->time
) * this->frequency
* this->channels
;
70 if ( ( int )( ( float )time
* 100 ) < ( int )( ( float )this->time
* 100 ) && this->used
> words
&& words
> 0 )
72 memmove( this->buffer
, &this->buffer
[ words
], ( this->used
- words
) * sizeof( int16_t ) );
76 else if ( ( int )( ( float )time
* 100 ) != ( int )( ( float )this->time
* 100 ) )
83 void sample_fifo_check( sample_fifo
this, double time
)
85 if ( this->used
== 0 )
87 if ( ( int )( ( float )time
* 100 ) < ( int )( ( float )this->time
* 100 ) )
92 void sample_fifo_append( sample_fifo
this, int16_t *samples
, int count
)
94 if ( ( this->size
- this->used
) < count
)
96 this->size
+= count
* 5;
97 this->buffer
= realloc( this->buffer
, this->size
* sizeof( int16_t ) );
100 memcpy( &this->buffer
[ this->used
], samples
, count
* sizeof( int16_t ) );
104 int sample_fifo_used( sample_fifo
this )
109 int sample_fifo_fetch( sample_fifo
this, int16_t *samples
, int count
)
111 if ( count
> this->used
)
114 memcpy( samples
, this->buffer
, count
* sizeof( int16_t ) );
116 memmove( this->buffer
, &this->buffer
[ count
], this->used
* sizeof( int16_t ) );
118 this->time
+= ( double )count
/ this->channels
/ this->frequency
;
123 void sample_fifo_close( sample_fifo
this )
125 free( this->buffer
);
129 // Forward references.
130 static int consumer_start( mlt_consumer
this );
131 static int consumer_stop( mlt_consumer
this );
132 static int consumer_is_stopped( mlt_consumer
this );
133 static void *consumer_thread( void *arg
);
134 static void consumer_close( mlt_consumer
this );
136 /** Initialise the dv consumer.
139 mlt_consumer
consumer_avformat_init( char *arg
)
141 // Allocate the consumer
142 mlt_consumer
this = mlt_consumer_new( );
144 // If memory allocated and initialises without error
147 // Get properties from the consumer
148 mlt_properties properties
= MLT_CONSUMER_PROPERTIES( this );
150 // Assign close callback
151 this->close
= consumer_close
;
153 // Interpret the argument
155 mlt_properties_set( properties
, "target", arg
);
157 // sample and frame queue
158 mlt_properties_set_data( properties
, "frame_queue", mlt_deque_init( ), 0, ( mlt_destructor
)mlt_deque_close
, NULL
);
160 // Set avformat defaults (all lifted from ffmpeg.c)
161 mlt_properties_set_int( properties
, "audio_bit_rate", 128000 );
162 mlt_properties_set_int( properties
, "video_bit_rate", 200 * 1000 );
163 mlt_properties_set_int( properties
, "video_bit_rate_tolerance", 4000 * 1000 );
164 mlt_properties_set_int( properties
, "gop_size", 12 );
165 mlt_properties_set_int( properties
, "b_frames", 0 );
166 mlt_properties_set_int( properties
, "mb_decision", FF_MB_DECISION_SIMPLE
);
167 mlt_properties_set_double( properties
, "qscale", 1 );
168 mlt_properties_set_int( properties
, "me_method", ME_EPZS
);
169 mlt_properties_set_int( properties
, "mb_cmp", FF_CMP_SAD
);
170 mlt_properties_set_int( properties
, "ildct_cmp", FF_CMP_VSAD
);
171 mlt_properties_set_int( properties
, "sub_cmp", FF_CMP_SAD
);
172 mlt_properties_set_int( properties
, "cmp", FF_CMP_SAD
);
173 mlt_properties_set_int( properties
, "pre_cmp", FF_CMP_SAD
);
174 mlt_properties_set_int( properties
, "pre_me", 0 );
175 mlt_properties_set_double( properties
, "lumi_mask", 0 );
176 mlt_properties_set_double( properties
, "dark_mask", 0 );
177 mlt_properties_set_double( properties
, "scplx_mask", 0 );
178 mlt_properties_set_double( properties
, "tcplx_mask", 0 );
179 mlt_properties_set_double( properties
, "p_mask", 0 );
180 mlt_properties_set_int( properties
, "qns", 0 );
181 mlt_properties_set_int( properties
, "video_qmin", 2 );
182 mlt_properties_set_int( properties
, "video_qmax", 31 );
183 mlt_properties_set_int( properties
, "video_lmin", 2*FF_QP2LAMBDA
);
184 mlt_properties_set_int( properties
, "video_lmax", 31*FF_QP2LAMBDA
);
185 mlt_properties_set_int( properties
, "video_mb_qmin", 2 );
186 mlt_properties_set_int( properties
, "video_mb_qmax", 31 );
187 mlt_properties_set_int( properties
, "video_qdiff", 3 );
188 mlt_properties_set_double( properties
, "video_qblur", 0.5 );
189 mlt_properties_set_double( properties
, "video_qcomp", 0.5 );
190 mlt_properties_set_int( properties
, "video_rc_max_rate", 0 );
191 mlt_properties_set_int( properties
, "video_rc_min_rate", 0 );
192 mlt_properties_set_int( properties
, "video_rc_buffer_size", 0 );
193 mlt_properties_set_double( properties
, "video_rc_buffer_aggressivity", 1.0 );
194 mlt_properties_set_double( properties
, "video_rc_initial_cplx", 0 );
195 mlt_properties_set_double( properties
, "video_i_qfactor", 1.25 );
196 mlt_properties_set_double( properties
, "video_b_qfactor", 1.25 );
197 mlt_properties_set_double( properties
, "video_i_qoffset", -0.8 );
198 mlt_properties_set_double( properties
, "video_b_qoffset", 0 );
199 mlt_properties_set_int( properties
, "video_intra_quant_bias", FF_DEFAULT_QUANT_BIAS
);
200 mlt_properties_set_int( properties
, "video_inter_quant_bias", FF_DEFAULT_QUANT_BIAS
);
201 mlt_properties_set_int( properties
, "dct_algo", 0 );
202 mlt_properties_set_int( properties
, "idct_algo", 0 );
203 mlt_properties_set_int( properties
, "me_threshold", 0 );
204 mlt_properties_set_int( properties
, "mb_threshold", 0 );
205 mlt_properties_set_int( properties
, "intra_dc_precision", 0 );
206 mlt_properties_set_int( properties
, "strict", 0 );
207 mlt_properties_set_int( properties
, "error_rate", 0 );
208 mlt_properties_set_int( properties
, "noise_reduction", 0 );
209 mlt_properties_set_int( properties
, "sc_threshold", 0 );
210 mlt_properties_set_int( properties
, "me_range", 0 );
211 mlt_properties_set_int( properties
, "coder", 0 );
212 mlt_properties_set_int( properties
, "context", 0 );
213 mlt_properties_set_int( properties
, "predictor", 0 );
214 mlt_properties_set_int( properties
, "ildct", 0 );
215 mlt_properties_set_int( properties
, "ilme", 0 );
217 // Ensure termination at end of the stream
218 mlt_properties_set_int( properties
, "terminate_on_pause", 1 );
220 // Set up start/stop/terminated callbacks
221 this->start
= consumer_start
;
222 this->stop
= consumer_stop
;
223 this->is_stopped
= consumer_is_stopped
;
230 /** Start the consumer.
233 static int consumer_start( mlt_consumer
this )
235 // Get the properties
236 mlt_properties properties
= MLT_CONSUMER_PROPERTIES( this );
238 // Check that we're not already running
239 if ( !mlt_properties_get_int( properties
, "running" ) )
242 pthread_t
*thread
= calloc( 1, sizeof( pthread_t
) );
244 // Get the width and height
245 int width
= mlt_properties_get_int( properties
, "width" );
246 int height
= mlt_properties_get_int( properties
, "height" );
248 // Obtain the size property
249 char *size
= mlt_properties_get( properties
, "size" );
255 if ( sscanf( size
, "%dx%d", &tw
, &th
) == 2 && tw
> 0 && th
> 0 )
262 fprintf( stderr
, "consumer_avformat: Invalid size property %s - ignoring.\n", size
);
266 // Now ensure we honour the multiple of two requested by libavformat
267 mlt_properties_set_int( properties
, "width", ( width
/ 2 ) * 2 );
268 mlt_properties_set_int( properties
, "height", ( height
/ 2 ) * 2 );
270 // Assign the thread to properties
271 mlt_properties_set_data( properties
, "thread", thread
, sizeof( pthread_t
), free
, NULL
);
273 // Set the running state
274 mlt_properties_set_int( properties
, "running", 1 );
277 pthread_create( thread
, NULL
, 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" );
339 if (oc
->oformat
->flags
& AVFMT_GLOBALHEADER
)
340 c
->flags
|= CODEC_FLAG_GLOBAL_HEADER
;
342 // Allow the user to override the audio fourcc
343 if ( mlt_properties_get( properties
, "afourcc" ) )
346 char *arg
= mlt_properties_get( properties
, "afourcc" );
347 int tag
= strtol( arg
, &tail
, 0);
349 tag
= arg
[ 0 ] + ( arg
[ 1 ] << 8 ) + ( arg
[ 2 ] << 16 ) + ( arg
[ 3 ] << 24 );
355 fprintf( stderr
, "Could not allocate a stream for audio\n" );
361 static int open_audio( AVFormatContext
*oc
, AVStream
*st
, int audio_outbuf_size
)
363 // We will return the audio input size from here
364 int audio_input_frame_size
= 0;
367 AVCodecContext
*c
= st
->codec
;
370 AVCodec
*codec
= avcodec_find_encoder( c
->codec_id
);
372 // Continue if codec found and we can open it
373 if ( codec
!= NULL
&& avcodec_open(c
, codec
) >= 0 )
375 // ugly hack for PCM codecs (will be removed ASAP with new PCM
376 // support to compute the input frame size in samples
377 if ( c
->frame_size
<= 1 )
379 audio_input_frame_size
= audio_outbuf_size
/ c
->channels
;
380 switch(st
->codec
->codec_id
)
382 case CODEC_ID_PCM_S16LE
:
383 case CODEC_ID_PCM_S16BE
:
384 case CODEC_ID_PCM_U16LE
:
385 case CODEC_ID_PCM_U16BE
:
386 audio_input_frame_size
>>= 1;
394 audio_input_frame_size
= c
->frame_size
;
397 // Some formats want stream headers to be seperate (hmm)
398 if( !strcmp( oc
->oformat
->name
, "mp4" ) ||
399 !strcmp( oc
->oformat
->name
, "mov" ) ||
400 !strcmp( oc
->oformat
->name
, "3gp" ) )
401 c
->flags
|= CODEC_FLAG_GLOBAL_HEADER
;
405 fprintf( stderr
, "Unable to encode audio - disabling audio output.\n" );
408 return audio_input_frame_size
;
411 static void close_audio( AVFormatContext
*oc
, AVStream
*st
)
413 avcodec_close( st
->codec
);
416 /** Add a video output stream
419 static AVStream
*add_video_stream( mlt_consumer
this, AVFormatContext
*oc
, int codec_id
)
421 // Get the properties
422 mlt_properties properties
= MLT_CONSUMER_PROPERTIES( this );
424 // Create a new stream
425 AVStream
*st
= av_new_stream( oc
, 0 );
429 char *pix_fmt
= mlt_properties_get( properties
, "pix_fmt" );
430 double ar
= mlt_properties_get_double( properties
, "display_ratio" );
431 AVCodecContext
*c
= st
->codec
;
432 c
->codec_id
= codec_id
;
433 c
->codec_type
= CODEC_TYPE_VIDEO
;
435 // put sample parameters
436 c
->bit_rate
= mlt_properties_get_int( properties
, "video_bit_rate" );
437 c
->bit_rate_tolerance
= mlt_properties_get_int( properties
, "video_bit_rate_tolerance" );
438 c
->width
= mlt_properties_get_int( properties
, "width" );
439 c
->height
= mlt_properties_get_int( properties
, "height" );
440 c
->time_base
.num
= mlt_properties_get_int( properties
, "frame_rate_den" );
441 c
->time_base
.den
= mlt_properties_get_int( properties
, "frame_rate_num" );
442 c
->gop_size
= mlt_properties_get_int( properties
, "gop_size" );
443 c
->pix_fmt
= pix_fmt ?
avcodec_get_pix_fmt( pix_fmt
) : PIX_FMT_YUV420P
;
445 if ( mlt_properties_get_int( properties
, "b_frames" ) )
447 c
->max_b_frames
= mlt_properties_get_int( properties
, "b_frames" );
448 c
->b_frame_strategy
= 0;
449 c
->b_quant_factor
= 2.0;
452 c
->mb_decision
= mlt_properties_get_int( properties
, "mb_decision" );
453 c
->sample_aspect_ratio
= av_d2q( ar
* c
->height
/ c
->width
, 255);
454 c
->mb_cmp
= mlt_properties_get_int( properties
, "mb_cmp" );
455 c
->ildct_cmp
= mlt_properties_get_int( properties
, "ildct_cmp" );
456 c
->me_sub_cmp
= mlt_properties_get_int( properties
, "sub_cmp" );
457 c
->me_cmp
= mlt_properties_get_int( properties
, "cmp" );
458 c
->me_pre_cmp
= mlt_properties_get_int( properties
, "pre_cmp" );
459 c
->pre_me
= mlt_properties_get_int( properties
, "pre_me" );
460 c
->lumi_masking
= mlt_properties_get_double( properties
, "lumi_mask" );
461 c
->dark_masking
= mlt_properties_get_double( properties
, "dark_mask" );
462 c
->spatial_cplx_masking
= mlt_properties_get_double( properties
, "scplx_mask" );
463 c
->temporal_cplx_masking
= mlt_properties_get_double( properties
, "tcplx_mask" );
464 c
->p_masking
= mlt_properties_get_double( properties
, "p_mask" );
465 c
->quantizer_noise_shaping
= mlt_properties_get_int( properties
, "qns" );
466 c
->qmin
= mlt_properties_get_int( properties
, "video_qmin" );
467 c
->qmax
= mlt_properties_get_int( properties
, "video_qmax" );
468 c
->lmin
= mlt_properties_get_int( properties
, "video_lmin" );
469 c
->lmax
= mlt_properties_get_int( properties
, "video_lmax" );
470 c
->mb_qmin
= mlt_properties_get_int( properties
, "video_mb_qmin" );
471 c
->mb_qmax
= mlt_properties_get_int( properties
, "video_mb_qmax" );
472 c
->max_qdiff
= mlt_properties_get_int( properties
, "video_qdiff" );
473 c
->qblur
= mlt_properties_get_double( properties
, "video_qblur" );
474 c
->qcompress
= mlt_properties_get_double( properties
, "video_qcomp" );
476 if ( mlt_properties_get_double( properties
, "qscale" ) > 0 )
478 c
->flags
|= CODEC_FLAG_QSCALE
;
479 st
->quality
= FF_QP2LAMBDA
* mlt_properties_get_double( properties
, "qscale" );
482 // Allow the user to override the video fourcc
483 if ( mlt_properties_get( properties
, "vfourcc" ) )
486 const char *arg
= mlt_properties_get( properties
, "vfourcc" );
487 int tag
= strtol( arg
, &tail
, 0);
489 tag
= arg
[ 0 ] + ( arg
[ 1 ] << 8 ) + ( arg
[ 2 ] << 16 ) + ( arg
[ 3 ] << 24 );
493 // Some formats want stream headers to be seperate
494 if ( oc
->oformat
->flags
& AVFMT_GLOBALHEADER
)
495 c
->flags
|= CODEC_FLAG_GLOBAL_HEADER
;
497 c
->rc_max_rate
= mlt_properties_get_int( properties
, "video_rc_max_rate" );
498 c
->rc_min_rate
= mlt_properties_get_int( properties
, "video_rc_min_rate" );
499 c
->rc_buffer_size
= mlt_properties_get_int( properties
, "video_rc_buffer_size" );
500 c
->rc_buffer_aggressivity
= mlt_properties_get_double( properties
, "video_rc_buffer_aggressivity" );
501 c
->rc_initial_cplx
= mlt_properties_get_double( properties
, "video_rc_initial_cplx" );
502 c
->i_quant_factor
= mlt_properties_get_double( properties
, "video_i_qfactor" );
503 c
->b_quant_factor
= mlt_properties_get_double( properties
, "video_b_qfactor" );
504 c
->i_quant_offset
= mlt_properties_get_double( properties
, "video_i_qoffset" );
505 c
->b_quant_offset
= mlt_properties_get_double( properties
, "video_b_qoffset" );
506 c
->intra_quant_bias
= mlt_properties_get_int( properties
, "video_intra_quant_bias" );
507 c
->inter_quant_bias
= mlt_properties_get_int( properties
, "video_inter_quant_bias" );
508 c
->dct_algo
= mlt_properties_get_int( properties
, "dct_algo" );
509 c
->idct_algo
= mlt_properties_get_int( properties
, "idct_algo" );
510 c
->me_threshold
= mlt_properties_get_int( properties
, "me_threshold" );
511 c
->mb_threshold
= mlt_properties_get_int( properties
, "mb_threshold" );
512 c
->intra_dc_precision
= mlt_properties_get_int( properties
, "intra_dc_precision" );
513 c
->strict_std_compliance
= mlt_properties_get_int( properties
, "strict" );
514 c
->error_rate
= mlt_properties_get_int( properties
, "error_rate" );
515 c
->noise_reduction
= mlt_properties_get_int( properties
, "noise_reduction" );
516 c
->scenechange_threshold
= mlt_properties_get_int( properties
, "sc_threshold" );
517 c
->me_range
= mlt_properties_get_int( properties
, "me_range" );
518 c
->coder_type
= mlt_properties_get_int( properties
, "coder" );
519 c
->context_model
= mlt_properties_get_int( properties
, "context" );
520 c
->prediction_method
= mlt_properties_get_int( properties
, "predictor" );
521 c
->me_method
= mlt_properties_get_int( properties
, "me_method" );
522 if ( mlt_properties_get_int( properties
, "progressive" ) == 0 &&
523 mlt_properties_get_int( properties
, "deinterlace" ) == 0 )
525 if ( mlt_properties_get_int( properties
, "ildct" ) )
526 c
->flags
|= CODEC_FLAG_INTERLACED_DCT
;
527 if ( mlt_properties_get_int( properties
, "ilme" ) )
528 c
->flags
|= CODEC_FLAG_INTERLACED_ME
;
533 fprintf( stderr
, "Could not allocate a stream for video\n" );
539 static AVFrame
*alloc_picture( int pix_fmt
, int width
, int height
)
542 AVFrame
*picture
= avcodec_alloc_frame();
544 // Determine size of the
545 int size
= avpicture_get_size(pix_fmt
, width
, height
);
547 // Allocate the picture buf
548 uint8_t *picture_buf
= av_malloc(size
);
550 // If we have both, then fill the image
551 if ( picture
!= NULL
&& picture_buf
!= NULL
)
553 // Fill the frame with the allocated buffer
554 avpicture_fill( (AVPicture
*)picture
, picture_buf
, pix_fmt
, width
, height
);
558 // Something failed - clean up what we can
560 av_free( picture_buf
);
567 static int open_video(AVFormatContext
*oc
, AVStream
*st
)
570 AVCodecContext
*video_enc
= st
->codec
;
572 // find the video encoder
573 AVCodec
*codec
= avcodec_find_encoder( video_enc
->codec_id
);
575 if( codec
&& codec
->pix_fmts
)
577 const enum PixelFormat
*p
= codec
->pix_fmts
;
580 if( *p
== video_enc
->pix_fmt
)
584 video_enc
->pix_fmt
= codec
->pix_fmts
[ 0 ];
587 // Open the codec safely
588 return codec
!= NULL
&& avcodec_open( video_enc
, codec
) >= 0;
591 void close_video(AVFormatContext
*oc
, AVStream
*st
)
593 avcodec_close(st
->codec
);
596 static inline long time_difference( struct timeval
*time1
)
598 struct timeval time2
;
599 gettimeofday( &time2
, NULL
);
600 return time2
.tv_sec
* 1000000 + time2
.tv_usec
- time1
->tv_sec
* 1000000 - time1
->tv_usec
;
603 /** The main thread - the argument is simply the consumer.
606 static void *consumer_thread( void *arg
)
608 // Map the argument to the object
609 mlt_consumer
this = arg
;
611 // Get the properties
612 mlt_properties properties
= MLT_CONSUMER_PROPERTIES( this );
614 // Get the terminate on pause property
615 int terminate_on_pause
= mlt_properties_get_int( properties
, "terminate_on_pause" );
618 // Determine if feed is slow (for realtime stuff)
619 int real_time_output
= mlt_properties_get_int( properties
, "real_time" );
624 // Get the frame rate
625 int fps
= mlt_properties_get_double( properties
, "fps" );
627 // Get width and height
628 int width
= mlt_properties_get_int( properties
, "width" );
629 int height
= mlt_properties_get_int( properties
, "height" );
630 int img_width
= width
;
631 int img_height
= height
;
633 // Get default audio properties
634 mlt_audio_format aud_fmt
= mlt_audio_pcm
;
635 int channels
= mlt_properties_get_int( properties
, "channels" );
636 int frequency
= mlt_properties_get_int( properties
, "frequency" );
640 // AVFormat audio buffer and frame size
641 int audio_outbuf_size
= 10000;
642 uint8_t *audio_outbuf
= av_malloc( audio_outbuf_size
);
643 int audio_input_frame_size
= 0;
645 // AVFormat video buffer and frame count
647 int video_outbuf_size
= ( 1024 * 1024 );
648 uint8_t *video_outbuf
= av_malloc( video_outbuf_size
);
650 // Used for the frame properties
651 mlt_frame frame
= NULL
;
652 mlt_properties frame_properties
= NULL
;
655 mlt_deque queue
= mlt_properties_get_data( properties
, "frame_queue", NULL
);
656 sample_fifo fifo
= mlt_properties_get_data( properties
, "sample_fifo", NULL
);
658 // Need two av pictures for converting
659 AVFrame
*output
= NULL
;
660 AVFrame
*input
= alloc_picture( PIX_FMT_YUV422
, width
, height
);
662 // For receiving images from an mlt_frame
664 mlt_image_format img_fmt
= mlt_image_yuv422
;
666 // For receiving audio samples back from the fifo
667 int16_t *buffer
= av_malloc( 48000 * 2 );
670 // Allocate the context
671 AVFormatContext
*oc
= av_alloc_format_context( );
674 AVStream
*audio_st
= NULL
;
675 AVStream
*video_st
= NULL
;
678 double audio_pts
= 0;
679 double video_pts
= 0;
686 long int total_time
= 0;
688 // Determine the format
689 AVOutputFormat
*fmt
= NULL
;
690 char *filename
= mlt_properties_get( properties
, "target" );
691 char *format
= mlt_properties_get( properties
, "format" );
692 char *vcodec
= mlt_properties_get( properties
, "vcodec" );
693 char *acodec
= mlt_properties_get( properties
, "acodec" );
695 // Used to store and override codec ids
699 // Check for user selected format first
700 if ( format
!= NULL
)
701 fmt
= guess_format( format
, NULL
, NULL
);
703 // Otherwise check on the filename
704 if ( fmt
== NULL
&& filename
!= NULL
)
705 fmt
= guess_format( NULL
, filename
, NULL
);
707 // Otherwise default to mpeg
709 fmt
= guess_format( "mpeg", NULL
, NULL
);
711 // We need a filename - default to stdout?
712 if ( filename
== NULL
|| !strcmp( filename
, "" ) )
715 // Get the codec ids selected
716 audio_codec_id
= fmt
->audio_codec
;
717 video_codec_id
= fmt
->video_codec
;
719 // Check for audio codec overides
720 if ( acodec
!= NULL
)
722 AVCodec
*p
= first_avcodec
;
725 if ( !strcmp( p
->name
, acodec
) && p
->type
== CODEC_TYPE_AUDIO
)
730 audio_codec_id
= p
->id
;
732 fprintf( stderr
, "consumer_avcodec: audio codec %s unrecognised - ignoring\n", acodec
);
735 // Check for video codec overides
736 if ( vcodec
!= NULL
)
738 AVCodec
*p
= first_avcodec
;
741 if ( !strcmp( p
->name
, vcodec
) && p
->type
== CODEC_TYPE_VIDEO
)
746 video_codec_id
= p
->id
;
748 fprintf( stderr
, "consumer_avcodec: video codec %s unrecognised - ignoring\n", vcodec
);
751 // Update the output context
757 tmp
= mlt_properties_get( properties
, "meta.attr.title.markup");
758 if (tmp
!= NULL
) snprintf( oc
->title
, sizeof(oc
->title
), "%s", tmp
);
760 tmp
= mlt_properties_get( properties
, "meta.attr.comment.markup");
761 if (tmp
!= NULL
) snprintf( oc
->comment
, sizeof(oc
->comment
), "%s", tmp
);
763 tmp
= mlt_properties_get( properties
, "meta.attr.author.markup");
764 if (tmp
!= NULL
) snprintf( oc
->author
, sizeof(oc
->author
), "%s", tmp
);
766 tmp
= mlt_properties_get( properties
, "meta.attr.copyright.markup");
767 if (tmp
!= NULL
) snprintf( oc
->copyright
, sizeof(oc
->copyright
), "%s", tmp
);
769 tmp
= mlt_properties_get( properties
, "meta.attr.album.markup");
770 if (tmp
!= NULL
) snprintf( oc
->album
, sizeof(oc
->album
), "%s", tmp
);
772 metavalue
= mlt_properties_get_int( properties
, "meta.attr.year.markup");
773 if (metavalue
!= 0) oc
->year
= metavalue
;
775 metavalue
= mlt_properties_get_int( properties
, "meta.attr.track.markup");
776 if (metavalue
!= 0) oc
->track
= metavalue
;
779 snprintf( oc
->filename
, sizeof(oc
->filename
), "%s", filename
);
781 // Add audio and video streams
782 if ( fmt
->video_codec
!= CODEC_ID_NONE
)
783 video_st
= add_video_stream( this, oc
, video_codec_id
);
784 if ( fmt
->audio_codec
!= CODEC_ID_NONE
)
785 audio_st
= add_audio_stream( this, oc
, audio_codec_id
);
787 // Set the parameters (even though we have none...)
788 if ( av_set_parameters(oc
, NULL
) >= 0 )
790 if ( video_st
&& !open_video( oc
, video_st
) )
793 audio_input_frame_size
= open_audio( oc
, audio_st
, audio_outbuf_size
);
795 // Open the output file, if needed
796 if ( !( fmt
->flags
& AVFMT_NOFILE
) )
798 if (url_fopen(&oc
->pb
, filename
, URL_WRONLY
) < 0)
800 fprintf(stderr
, "Could not open '%s'\n", filename
);
801 mlt_properties_set_int( properties
, "running", 0 );
805 // Write the stream header, if any
806 if ( mlt_properties_get_int( properties
, "running" ) )
807 av_write_header( oc
);
811 fprintf(stderr
, "Invalid output format parameters\n");
812 mlt_properties_set_int( properties
, "running", 0 );
817 output
= alloc_picture( video_st
->codec
->pix_fmt
, width
, height
);
819 // Last check - need at least one stream
820 if ( audio_st
== NULL
&& video_st
== NULL
)
821 mlt_properties_set_int( properties
, "running", 0 );
823 // Get the starting time (can ignore the times above)
824 gettimeofday( &ante
, NULL
);
826 // Loop while running
827 while( mlt_properties_get_int( properties
, "running" ) && !terminated
)
830 frame
= mlt_consumer_rt_frame( this );
832 // Check that we have a frame to work with
835 // Increment frames despatched
838 // Default audio args
839 frame_properties
= MLT_FRAME_PROPERTIES( frame
);
841 // Check for the terminated condition
842 terminated
= terminate_on_pause
&& mlt_properties_get_double( frame_properties
, "_speed" ) == 0.0;
844 // Get audio and append to the fifo
845 if ( !terminated
&& audio_st
)
847 samples
= mlt_sample_calculator( fps
, frequency
, count
++ );
848 mlt_frame_get_audio( frame
, &pcm
, &aud_fmt
, &frequency
, &channels
, &samples
);
850 // Create the fifo if we don't have one
853 fifo
= sample_fifo_init( frequency
, channels
);
854 mlt_properties_set_data( properties
, "sample_fifo", fifo
, 0, ( mlt_destructor
)sample_fifo_close
, NULL
);
857 if ( mlt_properties_get_double( frame_properties
, "_speed" ) != 1.0 )
858 memset( pcm
, 0, samples
* channels
* 2 );
860 // Append the samples
861 sample_fifo_append( fifo
, pcm
, samples
* channels
);
862 total_time
+= ( samples
* 1000000 ) / frequency
;
866 if ( !terminated
&& video_st
)
867 mlt_deque_push_back( queue
, frame
);
869 mlt_frame_close( frame
);
872 // While we have stuff to process, process...
876 audio_pts
= (double)audio_st
->pts
.val
* audio_st
->time_base
.num
/ audio_st
->time_base
.den
;
881 video_pts
= (double)video_st
->pts
.val
* video_st
->time_base
.num
/ video_st
->time_base
.den
;
885 // Write interleaved audio and video frames
886 if ( !video_st
|| ( video_st
&& audio_st
&& audio_pts
< video_pts
) )
888 if ( channels
* audio_input_frame_size
< sample_fifo_used( fifo
) )
892 av_init_packet( &pkt
);
896 sample_fifo_fetch( fifo
, buffer
, channels
* audio_input_frame_size
);
898 pkt
.size
= avcodec_encode_audio( c
, audio_outbuf
, audio_outbuf_size
, buffer
);
899 // Write the compressed frame in the media file
900 if ( c
->coded_frame
&& c
->coded_frame
->pts
!= AV_NOPTS_VALUE
)
901 pkt
.pts
= av_rescale_q( c
->coded_frame
->pts
, c
->time_base
, audio_st
->time_base
);
902 pkt
.flags
|= PKT_FLAG_KEY
;
903 pkt
.stream_index
= audio_st
->index
;
904 pkt
.data
= audio_outbuf
;
907 if ( av_interleaved_write_frame( oc
, &pkt
) != 0)
908 fprintf(stderr
, "Error while writing audio frame\n");
910 audio_pts
+= c
->frame_size
;
919 if ( mlt_deque_count( queue
) )
924 frame
= mlt_deque_pop_front( queue
);
925 frame_properties
= MLT_FRAME_PROPERTIES( frame
);
929 if ( mlt_properties_get_int( frame_properties
, "rendered" ) )
936 mlt_events_fire( properties
, "consumer-frame-show", frame
, NULL
);
938 mlt_frame_get_image( frame
, &image
, &img_fmt
, &img_width
, &img_height
, 0 );
942 // Convert the mlt frame to an AVPicture
943 for ( i
= 0; i
< height
; i
++ )
945 p
= input
->data
[ 0 ] + i
* input
->linesize
[ 0 ];
954 // Do the colour space conversion
956 struct SwsContext
*context
= sws_getContext( width
, height
, PIX_FMT_YUV422
,
957 width
, height
, video_st
->codec
->pix_fmt
, SWS_FAST_BILINEAR
, NULL
, NULL
, NULL
);
958 sws_scale( context
, input
->data
, input
->linesize
, 0, height
,
959 output
->data
, output
->linesize
);
960 sws_freeContext( context
);
962 img_convert( ( AVPicture
* )output
, video_st
->codec
->pix_fmt
, ( AVPicture
* )input
, PIX_FMT_YUV422
, width
, height
);
965 // Apply the alpha if applicable
966 if ( video_st
->codec
->pix_fmt
== PIX_FMT_RGBA32
)
968 uint8_t *alpha
= mlt_frame_get_alpha_mask( frame
);
971 for ( i
= 0; i
< height
; i
++ )
973 n
= ( width
+ 7 ) / 8;
974 p
= output
->data
[ 0 ] + i
* output
->linesize
[ 0 ];
982 case 0: do { *p
= *alpha
++; p
+= 4;
983 case 7: *p
= *alpha
++; p
+= 4;
984 case 6: *p
= *alpha
++; p
+= 4;
985 case 5: *p
= *alpha
++; p
+= 4;
986 case 4: *p
= *alpha
++; p
+= 4;
987 case 3: *p
= *alpha
++; p
+= 4;
988 case 2: *p
= *alpha
++; p
+= 4;
989 case 1: *p
= *alpha
++; p
+= 4;
997 if (oc
->oformat
->flags
& AVFMT_RAWPICTURE
)
999 // raw video case. The API will change slightly in the near future for that
1001 av_init_packet(&pkt
);
1003 pkt
.flags
|= PKT_FLAG_KEY
;
1004 pkt
.stream_index
= video_st
->index
;
1005 pkt
.data
= (uint8_t *)output
;
1006 pkt
.size
= sizeof(AVPicture
);
1008 ret
= av_write_frame(oc
, &pkt
);
1009 video_pts
+= c
->frame_size
;
1014 output
->quality
= video_st
->quality
;
1016 // Set frame interlace hints
1017 output
->interlaced_frame
= !mlt_properties_get_int( frame_properties
, "progressive" );
1018 output
->top_field_first
= mlt_properties_get_int( frame_properties
, "top_field_first" );
1021 out_size
= avcodec_encode_video(c
, video_outbuf
, video_outbuf_size
, output
);
1023 // If zero size, it means the image was buffered
1027 av_init_packet( &pkt
);
1029 if ( c
->coded_frame
&& c
->coded_frame
->pts
!= AV_NOPTS_VALUE
)
1030 pkt
.pts
= av_rescale_q( c
->coded_frame
->pts
, c
->time_base
, video_st
->time_base
);
1031 if( c
->coded_frame
&& c
->coded_frame
->key_frame
)
1032 pkt
.flags
|= PKT_FLAG_KEY
;
1033 pkt
.stream_index
= video_st
->index
;
1034 pkt
.data
= video_outbuf
;
1037 // write the compressed frame in the media file
1038 ret
= av_interleaved_write_frame(oc
, &pkt
);
1039 video_pts
+= c
->frame_size
;
1043 fprintf( stderr
, "Error with video encode\n" );
1047 mlt_frame_close( frame
);
1056 if ( real_time_output
&& frames
% 12 == 0 )
1058 long passed
= time_difference( &ante
);
1061 long pending
= ( ( ( long )sample_fifo_used( fifo
) * 1000 ) / frequency
) * 1000;
1064 if ( passed
< total_time
)
1066 long total
= ( total_time
- passed
);
1067 struct timespec t
= { total
/ 1000000, ( total
% 1000000 ) * 1000 };
1068 nanosleep( &t
, NULL
);
1075 close_video(oc
, video_st
);
1077 close_audio(oc
, audio_st
);
1079 // Write the trailer, if any
1080 av_write_trailer(oc
);
1083 for(i
= 0; i
< oc
->nb_streams
; i
++)
1084 av_freep(&oc
->streams
[i
]);
1086 // Close the output file
1087 if (!(fmt
->flags
& AVFMT_NOFILE
))
1088 url_fclose(&oc
->pb
);
1090 // Clean up input and output frames
1092 av_free( output
->data
[0] );
1094 av_free( input
->data
[0] );
1096 av_free( video_outbuf
);
1102 // Just in case we terminated on pause
1103 mlt_properties_set_int( properties
, "running", 0 );
1105 mlt_consumer_stopped( this );
1110 /** Close the consumer.
1113 static void consumer_close( mlt_consumer
this )
1115 // Stop the consumer
1116 mlt_consumer_stop( this );
1119 mlt_consumer_close( this );