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producer_avformat.c: simplify recent commit to conform stream aspect to codec aspect...
[melted] / src / modules / avformat / consumer_avformat.c
1 /*
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
6 *
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.
11 *
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.
16 *
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
20 */
21
22 // mlt Header files
23 #include <framework/mlt_consumer.h>
24 #include <framework/mlt_frame.h>
25
26 // System header files
27 #include <stdio.h>
28 #include <stdlib.h>
29 #include <string.h>
30 #include <limits.h>
31 #include <pthread.h>
32 #include <sys/time.h>
33 #include <math.h>
34
35 // avformat header files
36 #include <avformat.h>
37 #ifdef SWSCALE
38 #include <swscale.h>
39 #endif
40 #include <opt.h>
41
42 //
43 // This structure should be extended and made globally available in mlt
44 //
45
46 typedef struct
47 {
48 int16_t *buffer;
49 int size;
50 int used;
51 double time;
52 int frequency;
53 int channels;
54 }
55 *sample_fifo, sample_fifo_s;
56
57 sample_fifo sample_fifo_init( int frequency, int channels )
58 {
59 sample_fifo this = calloc( 1, sizeof( sample_fifo_s ) );
60 this->frequency = frequency;
61 this->channels = channels;
62 return this;
63 }
64
65 // sample_fifo_clear and check are temporarily aborted (not working as intended)
66
67 void sample_fifo_clear( sample_fifo this, double time )
68 {
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 )
71 {
72 memmove( this->buffer, &this->buffer[ words ], ( this->used - words ) * sizeof( int16_t ) );
73 this->used -= words;
74 this->time = time;
75 }
76 else if ( ( int )( ( float )time * 100 ) != ( int )( ( float )this->time * 100 ) )
77 {
78 this->used = 0;
79 this->time = time;
80 }
81 }
82
83 void sample_fifo_check( sample_fifo this, double time )
84 {
85 if ( this->used == 0 )
86 {
87 if ( ( int )( ( float )time * 100 ) < ( int )( ( float )this->time * 100 ) )
88 this->time = time;
89 }
90 }
91
92 void sample_fifo_append( sample_fifo this, int16_t *samples, int count )
93 {
94 if ( ( this->size - this->used ) < count )
95 {
96 this->size += count * 5;
97 this->buffer = realloc( this->buffer, this->size * sizeof( int16_t ) );
98 }
99
100 memcpy( &this->buffer[ this->used ], samples, count * sizeof( int16_t ) );
101 this->used += count;
102 }
103
104 int sample_fifo_used( sample_fifo this )
105 {
106 return this->used;
107 }
108
109 int sample_fifo_fetch( sample_fifo this, int16_t *samples, int count )
110 {
111 if ( count > this->used )
112 count = this->used;
113
114 memcpy( samples, this->buffer, count * sizeof( int16_t ) );
115 this->used -= count;
116 memmove( this->buffer, &this->buffer[ count ], this->used * sizeof( int16_t ) );
117
118 this->time += ( double )count / this->channels / this->frequency;
119
120 return count;
121 }
122
123 void sample_fifo_close( sample_fifo this )
124 {
125 free( this->buffer );
126 free( this );
127 }
128
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 );
135
136 /** Initialise the dv consumer.
137 */
138
139 mlt_consumer consumer_avformat_init( mlt_profile profile, char *arg )
140 {
141 // Allocate the consumer
142 mlt_consumer this = mlt_consumer_new( profile );
143
144 // If memory allocated and initialises without error
145 if ( this != NULL )
146 {
147 // Get properties from the consumer
148 mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
149
150 // Assign close callback
151 this->close = consumer_close;
152
153 // Interpret the argument
154 if ( arg != NULL )
155 mlt_properties_set( properties, "target", arg );
156
157 // sample and frame queue
158 mlt_properties_set_data( properties, "frame_queue", mlt_deque_init( ), 0, ( mlt_destructor )mlt_deque_close, NULL );
159
160 // Audio options not fully handled by AVOptions
161 #define QSCALE_NONE (-99999)
162 mlt_properties_set_int( properties, "aq", QSCALE_NONE );
163
164 // Video options not fully handled by AVOptions
165 mlt_properties_set_int( properties, "dc", 8 );
166
167 // Muxer options not fully handled by AVOptions
168 mlt_properties_set_double( properties, "muxdelay", 0.7 );
169 mlt_properties_set_double( properties, "muxpreload", 0.5 );
170
171 // Ensure termination at end of the stream
172 mlt_properties_set_int( properties, "terminate_on_pause", 1 );
173
174 // Default to separate processing threads for producer and consumer with no frame dropping!
175 mlt_properties_set_int( properties, "real_time", -1 );
176
177 // Set up start/stop/terminated callbacks
178 this->start = consumer_start;
179 this->stop = consumer_stop;
180 this->is_stopped = consumer_is_stopped;
181 }
182
183 // Return this
184 return this;
185 }
186
187 /** Start the consumer.
188 */
189
190 static int consumer_start( mlt_consumer this )
191 {
192 // Get the properties
193 mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
194
195 // Check that we're not already running
196 if ( !mlt_properties_get_int( properties, "running" ) )
197 {
198 // Allocate a thread
199 pthread_t *thread = calloc( 1, sizeof( pthread_t ) );
200
201 // Get the width and height
202 int width = mlt_properties_get_int( properties, "width" );
203 int height = mlt_properties_get_int( properties, "height" );
204
205 // Obtain the size property
206 char *size = mlt_properties_get( properties, "s" );
207
208 // Interpret it
209 if ( size != NULL )
210 {
211 int tw, th;
212 if ( sscanf( size, "%dx%d", &tw, &th ) == 2 && tw > 0 && th > 0 )
213 {
214 width = tw;
215 height = th;
216 }
217 else
218 {
219 fprintf( stderr, "%s: Invalid size property %s - ignoring.\n", __FILE__, size );
220 }
221 }
222
223 // Now ensure we honour the multiple of two requested by libavformat
224 width = ( width / 2 ) * 2;
225 height = ( height / 2 ) * 2;
226 mlt_properties_set_int( properties, "width", width );
227 mlt_properties_set_int( properties, "height", height );
228
229 // We need to set these on the profile as well because the s property is
230 // an alias to mlt properties that correspond to profile settings.
231 mlt_profile profile = mlt_service_profile( MLT_CONSUMER_SERVICE( this ) );
232 if ( profile )
233 {
234 profile->width = width;
235 profile->height = height;
236 }
237
238 // Handle the ffmpeg command line "-r" property for frame rate
239 if ( mlt_properties_get( properties, "r" ) )
240 {
241 double frame_rate = mlt_properties_get_double( properties, "r" );
242 AVRational rational = av_d2q( frame_rate, 255 );
243 mlt_properties_set_int( properties, "frame_rate_num", rational.num );
244 mlt_properties_set_int( properties, "frame_rate_den", rational.den );
245 if ( profile )
246 {
247 profile->frame_rate_num = rational.num;
248 profile->frame_rate_den = rational.den;
249 mlt_properties_set_double( properties, "fps", mlt_profile_fps( profile ) );
250 }
251 }
252
253 // Apply AVOptions that are synonyms for standard mlt_consumer options
254 if ( mlt_properties_get( properties, "ac" ) )
255 mlt_properties_set_int( properties, "channels", mlt_properties_get_int( properties, "ac" ) );
256 if ( mlt_properties_get( properties, "ar" ) )
257 mlt_properties_set_int( properties, "frequency", mlt_properties_get_int( properties, "ar" ) );
258
259 // Assign the thread to properties
260 mlt_properties_set_data( properties, "thread", thread, sizeof( pthread_t ), free, NULL );
261
262 // Set the running state
263 mlt_properties_set_int( properties, "running", 1 );
264
265 // Create the thread
266 pthread_create( thread, NULL, consumer_thread, this );
267 }
268 return 0;
269 }
270
271 /** Stop the consumer.
272 */
273
274 static int consumer_stop( mlt_consumer this )
275 {
276 // Get the properties
277 mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
278
279 // Check that we're running
280 if ( mlt_properties_get_int( properties, "running" ) )
281 {
282 // Get the thread
283 pthread_t *thread = mlt_properties_get_data( properties, "thread", NULL );
284
285 // Stop the thread
286 mlt_properties_set_int( properties, "running", 0 );
287
288 // Wait for termination
289 pthread_join( *thread, NULL );
290 }
291
292 return 0;
293 }
294
295 /** Determine if the consumer is stopped.
296 */
297
298 static int consumer_is_stopped( mlt_consumer this )
299 {
300 // Get the properties
301 mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
302 return !mlt_properties_get_int( properties, "running" );
303 }
304
305 /** Process properties as AVOptions and apply to AV context obj
306 */
307
308 static void apply_properties( void *obj, mlt_properties properties, int flags )
309 {
310 int i;
311 int count = mlt_properties_count( properties );
312 for ( i = 0; i < count; i++ )
313 {
314 const char *opt_name = mlt_properties_get_name( properties, i );
315 const AVOption *opt = av_find_opt( obj, opt_name, NULL, flags, flags );
316 if ( opt != NULL )
317 #if LIBAVCODEC_VERSION_INT >= ((51<<16)+(59<<8)+0)
318 av_set_string2( obj, opt_name, mlt_properties_get( properties, opt_name), 0 );
319 #else
320 av_set_string( obj, opt_name, mlt_properties_get( properties, opt_name) );
321 #endif
322 }
323 }
324
325 /** Add an audio output stream
326 */
327
328 static AVStream *add_audio_stream( mlt_consumer this, AVFormatContext *oc, int codec_id )
329 {
330 // Get the properties
331 mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
332
333 // Create a new stream
334 AVStream *st = av_new_stream( oc, 1 );
335
336 // If created, then initialise from properties
337 if ( st != NULL )
338 {
339 AVCodecContext *c = st->codec;
340
341 // Establish defaults from AVOptions
342 avcodec_get_context_defaults2( c, CODEC_TYPE_AUDIO );
343
344 c->codec_id = codec_id;
345 c->codec_type = CODEC_TYPE_AUDIO;
346
347 // Setup multi-threading
348 int thread_count = mlt_properties_get_int( properties, "threads" );
349 if ( thread_count == 0 && getenv( "MLT_AVFORMAT_THREADS" ) )
350 thread_count = atoi( getenv( "MLT_AVFORMAT_THREADS" ) );
351 if ( thread_count > 1 )
352 avcodec_thread_init( c, thread_count );
353
354 if (oc->oformat->flags & AVFMT_GLOBALHEADER)
355 c->flags |= CODEC_FLAG_GLOBAL_HEADER;
356
357 // Allow the user to override the audio fourcc
358 if ( mlt_properties_get( properties, "atag" ) )
359 {
360 char *tail = NULL;
361 char *arg = mlt_properties_get( properties, "atag" );
362 int tag = strtol( arg, &tail, 0);
363 if( !tail || *tail )
364 tag = arg[ 0 ] + ( arg[ 1 ] << 8 ) + ( arg[ 2 ] << 16 ) + ( arg[ 3 ] << 24 );
365 c->codec_tag = tag;
366 }
367
368 // Process properties as AVOptions
369 apply_properties( c, properties, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM );
370
371 int audio_qscale = mlt_properties_get_int( properties, "aq" );
372 if ( audio_qscale > QSCALE_NONE )
373 {
374 c->flags |= CODEC_FLAG_QSCALE;
375 c->global_quality = st->quality = FF_QP2LAMBDA * audio_qscale;
376 }
377
378 // Set parameters controlled by MLT
379 c->sample_rate = mlt_properties_get_int( properties, "frequency" );
380 c->channels = mlt_properties_get_int( properties, "channels" );
381
382 if ( mlt_properties_get( properties, "alang" ) != NULL )
383 strncpy( st->language, mlt_properties_get( properties, "alang" ), sizeof( st->language ) );
384 }
385 else
386 {
387 fprintf( stderr, "%s: Could not allocate a stream for audio\n", __FILE__ );
388 }
389
390 return st;
391 }
392
393 static int open_audio( AVFormatContext *oc, AVStream *st, int audio_outbuf_size )
394 {
395 // We will return the audio input size from here
396 int audio_input_frame_size = 0;
397
398 // Get the context
399 AVCodecContext *c = st->codec;
400
401 // Find the encoder
402 AVCodec *codec = avcodec_find_encoder( c->codec_id );
403
404 // Continue if codec found and we can open it
405 if ( codec != NULL && avcodec_open( c, codec ) >= 0 )
406 {
407 // ugly hack for PCM codecs (will be removed ASAP with new PCM
408 // support to compute the input frame size in samples
409 if ( c->frame_size <= 1 )
410 {
411 audio_input_frame_size = audio_outbuf_size / c->channels;
412 switch(st->codec->codec_id)
413 {
414 case CODEC_ID_PCM_S16LE:
415 case CODEC_ID_PCM_S16BE:
416 case CODEC_ID_PCM_U16LE:
417 case CODEC_ID_PCM_U16BE:
418 audio_input_frame_size >>= 1;
419 break;
420 default:
421 break;
422 }
423 }
424 else
425 {
426 audio_input_frame_size = c->frame_size;
427 }
428
429 // Some formats want stream headers to be seperate (hmm)
430 if( !strcmp( oc->oformat->name, "mp4" ) ||
431 !strcmp( oc->oformat->name, "mov" ) ||
432 !strcmp( oc->oformat->name, "3gp" ) )
433 c->flags |= CODEC_FLAG_GLOBAL_HEADER;
434 }
435 else
436 {
437 fprintf( stderr, "%s: Unable to encode audio - disabling audio output.\n", __FILE__ );
438 }
439
440 return audio_input_frame_size;
441 }
442
443 static void close_audio( AVFormatContext *oc, AVStream *st )
444 {
445 avcodec_close( st->codec );
446 }
447
448 /** Add a video output stream
449 */
450
451 static AVStream *add_video_stream( mlt_consumer this, AVFormatContext *oc, int codec_id )
452 {
453 // Get the properties
454 mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
455
456 // Create a new stream
457 AVStream *st = av_new_stream( oc, 0 );
458
459 if ( st != NULL )
460 {
461 char *pix_fmt = mlt_properties_get( properties, "pix_fmt" );
462 AVCodecContext *c = st->codec;
463
464 // Establish defaults from AVOptions
465 avcodec_get_context_defaults2( c, CODEC_TYPE_VIDEO );
466
467 c->codec_id = codec_id;
468 c->codec_type = CODEC_TYPE_VIDEO;
469
470 // Setup multi-threading
471 int thread_count = mlt_properties_get_int( properties, "threads" );
472 if ( thread_count == 0 && getenv( "MLT_AVFORMAT_THREADS" ) )
473 thread_count = atoi( getenv( "MLT_AVFORMAT_THREADS" ) );
474 if ( thread_count > 1 )
475 avcodec_thread_init( c, thread_count );
476
477 // Process properties as AVOptions
478 apply_properties( c, properties, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM );
479
480 // Set options controlled by MLT
481 c->width = mlt_properties_get_int( properties, "width" );
482 c->height = mlt_properties_get_int( properties, "height" );
483 c->time_base.num = mlt_properties_get_int( properties, "frame_rate_den" );
484 c->time_base.den = mlt_properties_get_int( properties, "frame_rate_num" );
485 st->time_base = c->time_base;
486 c->pix_fmt = pix_fmt ? avcodec_get_pix_fmt( pix_fmt ) : PIX_FMT_YUV420P;
487
488 if ( codec_id == CODEC_ID_DVVIDEO )
489 {
490 // Compensate for FFmpeg's notion of DV aspect ratios, which are
491 // based upon a width of 704. Since we do not have a normaliser
492 // that crops (nor is cropping 720 wide ITU-R 601 video always desirable)
493 // we just coerce the values to facilitate a passive behaviour through
494 // the rescale normaliser when using equivalent producers and consumers.
495 // = display_aspect / (width * height)
496 double ar = mlt_properties_get_double( properties, "aspect_ratio" );
497 if ( ar == 8.0/9.0 ) // 4:3 NTSC
498 {
499 c->sample_aspect_ratio.num = 10;
500 c->sample_aspect_ratio.den = 11;
501 }
502 else if ( ar == 16.0/15.0 ) // 4:3 PAL
503 {
504 c->sample_aspect_ratio.num = 159;
505 c->sample_aspect_ratio.den = 54;
506 }
507 else if ( ar == 32.0/27.0 ) // 16:9 NTSC
508 {
509 c->sample_aspect_ratio.num = 40;
510 c->sample_aspect_ratio.den = 33;
511 }
512 else // 16:9 PAL
513 {
514 c->sample_aspect_ratio.num = 118;
515 c->sample_aspect_ratio.den = 81;
516 }
517 }
518 else if ( mlt_properties_get( properties, "aspect" ) )
519 {
520 // "-aspect" on ffmpeg command line is display aspect ratio
521 double ar = mlt_properties_get_double( properties, "aspect" );
522 AVRational rational = av_d2q( ar, 255 );
523
524 // Update the profile and properties as well since this is an alias
525 // for mlt properties that correspond to profile settings
526 mlt_properties_set_int( properties, "display_aspect_num", rational.num );
527 mlt_properties_set_int( properties, "display_aspect_den", rational.den );
528 mlt_profile profile = mlt_service_profile( MLT_CONSUMER_SERVICE( this ) );
529 if ( profile )
530 {
531 profile->display_aspect_num = rational.num;
532 profile->display_aspect_den = rational.den;
533 mlt_properties_set_double( properties, "display_ratio", mlt_profile_dar( profile ) );
534 }
535
536 // Now compute the sample aspect ratio
537 rational = av_d2q( ar * c->height / c->width, 255 );
538 c->sample_aspect_ratio = rational;
539 // Update the profile and properties as well since this is an alias
540 // for mlt properties that correspond to profile settings
541 mlt_properties_set_int( properties, "sample_aspect_num", rational.num );
542 mlt_properties_set_int( properties, "sample_aspect_den", rational.den );
543 if ( profile )
544 {
545 profile->sample_aspect_num = rational.num;
546 profile->sample_aspect_den = rational.den;
547 mlt_properties_set_double( properties, "aspect_ratio", mlt_profile_sar( profile ) );
548 }
549
550 }
551 else
552 {
553 c->sample_aspect_ratio.num = mlt_properties_get_int( properties, "sample_aspect_num" );
554 c->sample_aspect_ratio.den = mlt_properties_get_int( properties, "sample_aspect_den" );
555 }
556 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(21<<8)+0)
557 st->sample_aspect_ratio = c->sample_aspect_ratio;
558 #endif
559
560 if ( mlt_properties_get_double( properties, "qscale" ) > 0 )
561 {
562 c->flags |= CODEC_FLAG_QSCALE;
563 st->quality = FF_QP2LAMBDA * mlt_properties_get_double( properties, "qscale" );
564 }
565
566 // Allow the user to override the video fourcc
567 if ( mlt_properties_get( properties, "vtag" ) )
568 {
569 char *tail = NULL;
570 const char *arg = mlt_properties_get( properties, "vtag" );
571 int tag = strtol( arg, &tail, 0);
572 if( !tail || *tail )
573 tag = arg[ 0 ] + ( arg[ 1 ] << 8 ) + ( arg[ 2 ] << 16 ) + ( arg[ 3 ] << 24 );
574 c->codec_tag = tag;
575 }
576
577 // Some formats want stream headers to be seperate
578 if ( oc->oformat->flags & AVFMT_GLOBALHEADER )
579 c->flags |= CODEC_FLAG_GLOBAL_HEADER;
580
581 // Translate these standard mlt consumer properties to ffmpeg
582 if ( mlt_properties_get_int( properties, "progressive" ) == 0 &&
583 mlt_properties_get_int( properties, "deinterlace" ) == 0 )
584 {
585 if ( mlt_properties_get_int( properties, "ildct" ) )
586 c->flags |= CODEC_FLAG_INTERLACED_DCT;
587 if ( mlt_properties_get_int( properties, "ilme" ) )
588 c->flags |= CODEC_FLAG_INTERLACED_ME;
589 }
590
591 // parse the ratecontrol override string
592 int i;
593 char *rc_override = mlt_properties_get( properties, "rc_override" );
594 for ( i = 0; rc_override; i++ )
595 {
596 int start, end, q;
597 int e = sscanf( rc_override, "%d,%d,%d", &start, &end, &q );
598 if ( e != 3 )
599 fprintf( stderr, "%s: Error parsing rc_override\n", __FILE__ );
600 c->rc_override = av_realloc( c->rc_override, sizeof( RcOverride ) * ( i + 1 ) );
601 c->rc_override[i].start_frame = start;
602 c->rc_override[i].end_frame = end;
603 if ( q > 0 )
604 {
605 c->rc_override[i].qscale = q;
606 c->rc_override[i].quality_factor = 1.0;
607 }
608 else
609 {
610 c->rc_override[i].qscale = 0;
611 c->rc_override[i].quality_factor = -q / 100.0;
612 }
613 rc_override = strchr( rc_override, '/' );
614 if ( rc_override )
615 rc_override++;
616 }
617 c->rc_override_count = i;
618 if ( !c->rc_initial_buffer_occupancy )
619 c->rc_initial_buffer_occupancy = c->rc_buffer_size * 3/4;
620 c->intra_dc_precision = mlt_properties_get_int( properties, "dc" ) - 8;
621
622 // Setup dual-pass
623 i = mlt_properties_get_int( properties, "pass" );
624 if ( i == 1 )
625 c->flags |= CODEC_FLAG_PASS1;
626 else if ( i == 2 )
627 c->flags |= CODEC_FLAG_PASS2;
628 if ( c->flags & ( CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2 ) )
629 {
630 char logfilename[1024];
631 FILE *f;
632 int size;
633 char *logbuffer;
634
635 snprintf( logfilename, sizeof(logfilename), "%s_2pass.log",
636 mlt_properties_get( properties, "passlogfile" ) ? mlt_properties_get( properties, "passlogfile" ) : mlt_properties_get( properties, "target" ) );
637 if ( c->flags & CODEC_FLAG_PASS1 )
638 {
639 f = fopen( logfilename, "w" );
640 if ( !f )
641 perror( logfilename );
642 else
643 mlt_properties_set_data( properties, "_logfile", f, 0, ( mlt_destructor )fclose, NULL );
644 }
645 else
646 {
647 /* read the log file */
648 f = fopen( logfilename, "r" );
649 if ( !f )
650 {
651 perror(logfilename);
652 }
653 else
654 {
655 fseek( f, 0, SEEK_END );
656 size = ftell( f );
657 fseek( f, 0, SEEK_SET );
658 logbuffer = av_malloc( size + 1 );
659 if ( !logbuffer )
660 fprintf( stderr, "%s: Could not allocate log buffer\n", __FILE__ );
661 else
662 {
663 size = fread( logbuffer, 1, size, f );
664 fclose( f );
665 logbuffer[size] = '\0';
666 c->stats_in = logbuffer;
667 mlt_properties_set_data( properties, "_logbuffer", logbuffer, 0, ( mlt_destructor )av_free, NULL );
668 }
669 }
670 }
671 }
672 }
673 else
674 {
675 fprintf( stderr, "%s: Could not allocate a stream for video\n", __FILE__ );
676 }
677
678 return st;
679 }
680
681 static AVFrame *alloc_picture( int pix_fmt, int width, int height )
682 {
683 // Allocate a frame
684 AVFrame *picture = avcodec_alloc_frame();
685
686 // Determine size of the
687 int size = avpicture_get_size(pix_fmt, width, height);
688
689 // Allocate the picture buf
690 uint8_t *picture_buf = av_malloc(size);
691
692 // If we have both, then fill the image
693 if ( picture != NULL && picture_buf != NULL )
694 {
695 // Fill the frame with the allocated buffer
696 avpicture_fill( (AVPicture *)picture, picture_buf, pix_fmt, width, height);
697 }
698 else
699 {
700 // Something failed - clean up what we can
701 av_free( picture );
702 av_free( picture_buf );
703 picture = NULL;
704 }
705
706 return picture;
707 }
708
709 static int open_video(AVFormatContext *oc, AVStream *st)
710 {
711 // Get the codec
712 AVCodecContext *video_enc = st->codec;
713
714 // find the video encoder
715 AVCodec *codec = avcodec_find_encoder( video_enc->codec_id );
716
717 if( codec && codec->pix_fmts )
718 {
719 const enum PixelFormat *p = codec->pix_fmts;
720 for( ; *p!=-1; p++ )
721 {
722 if( *p == video_enc->pix_fmt )
723 break;
724 }
725 if( *p == -1 )
726 video_enc->pix_fmt = codec->pix_fmts[ 0 ];
727 }
728
729 // Open the codec safely
730 return codec != NULL && avcodec_open( video_enc, codec ) >= 0;
731 }
732
733 void close_video(AVFormatContext *oc, AVStream *st)
734 {
735 avcodec_close(st->codec);
736 }
737
738 static inline long time_difference( struct timeval *time1 )
739 {
740 struct timeval time2;
741 gettimeofday( &time2, NULL );
742 return time2.tv_sec * 1000000 + time2.tv_usec - time1->tv_sec * 1000000 - time1->tv_usec;
743 }
744
745 /** The main thread - the argument is simply the consumer.
746 */
747
748 static void *consumer_thread( void *arg )
749 {
750 // Map the argument to the object
751 mlt_consumer this = arg;
752
753 // Get the properties
754 mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
755
756 // Get the terminate on pause property
757 int terminate_on_pause = mlt_properties_get_int( properties, "terminate_on_pause" );
758 int terminated = 0;
759
760 // Determine if feed is slow (for realtime stuff)
761 int real_time_output = mlt_properties_get_int( properties, "real_time" );
762
763 // Time structures
764 struct timeval ante;
765
766 // Get the frame rate
767 double fps = mlt_properties_get_double( properties, "fps" );
768
769 // Get width and height
770 int width = mlt_properties_get_int( properties, "width" );
771 int height = mlt_properties_get_int( properties, "height" );
772 int img_width = width;
773 int img_height = height;
774
775 // Get default audio properties
776 mlt_audio_format aud_fmt = mlt_audio_pcm;
777 int channels = mlt_properties_get_int( properties, "channels" );
778 int frequency = mlt_properties_get_int( properties, "frequency" );
779 int16_t *pcm = NULL;
780 int samples = 0;
781
782 // AVFormat audio buffer and frame size
783 int audio_outbuf_size = 10000;
784 uint8_t *audio_outbuf = av_malloc( audio_outbuf_size );
785 int audio_input_frame_size = 0;
786
787 // AVFormat video buffer and frame count
788 int frame_count = 0;
789 int video_outbuf_size = ( 1024 * 1024 );
790 uint8_t *video_outbuf = av_malloc( video_outbuf_size );
791
792 // Used for the frame properties
793 mlt_frame frame = NULL;
794 mlt_properties frame_properties = NULL;
795
796 // Get the queues
797 mlt_deque queue = mlt_properties_get_data( properties, "frame_queue", NULL );
798 sample_fifo fifo = mlt_properties_get_data( properties, "sample_fifo", NULL );
799
800 // Need two av pictures for converting
801 AVFrame *output = NULL;
802 AVFrame *input = alloc_picture( PIX_FMT_YUV422, width, height );
803
804 // For receiving images from an mlt_frame
805 uint8_t *image;
806 mlt_image_format img_fmt = mlt_image_yuv422;
807
808 // For receiving audio samples back from the fifo
809 int16_t *buffer = av_malloc( 48000 * 2 );
810 int count = 0;
811
812 // Allocate the context
813 AVFormatContext *oc = av_alloc_format_context( );
814
815 // Streams
816 AVStream *audio_st = NULL;
817 AVStream *video_st = NULL;
818
819 // Time stamps
820 double audio_pts = 0;
821 double video_pts = 0;
822
823 // Loop variable
824 int i;
825
826 // Frames despatched
827 long int frames = 0;
828 long int total_time = 0;
829
830 // Determine the format
831 AVOutputFormat *fmt = NULL;
832 char *filename = mlt_properties_get( properties, "target" );
833 char *format = mlt_properties_get( properties, "f" );
834 char *vcodec = mlt_properties_get( properties, "vcodec" );
835 char *acodec = mlt_properties_get( properties, "acodec" );
836
837 // Used to store and override codec ids
838 int audio_codec_id;
839 int video_codec_id;
840
841 // Check for user selected format first
842 if ( format != NULL )
843 fmt = guess_format( format, NULL, NULL );
844
845 // Otherwise check on the filename
846 if ( fmt == NULL && filename != NULL )
847 fmt = guess_format( NULL, filename, NULL );
848
849 // Otherwise default to mpeg
850 if ( fmt == NULL )
851 fmt = guess_format( "mpeg", NULL, NULL );
852
853 // We need a filename - default to stdout?
854 if ( filename == NULL || !strcmp( filename, "" ) )
855 filename = "pipe:";
856
857 // Get the codec ids selected
858 audio_codec_id = fmt->audio_codec;
859 video_codec_id = fmt->video_codec;
860
861 // Check for audio codec overides
862 if ( acodec != NULL )
863 {
864 AVCodec *p = avcodec_find_encoder_by_name( acodec );
865 if ( p != NULL )
866 audio_codec_id = p->id;
867 else
868 fprintf( stderr, "%s: audio codec %s unrecognised - ignoring\n", __FILE__, acodec );
869 }
870
871 // Check for video codec overides
872 if ( vcodec != NULL )
873 {
874 AVCodec *p = avcodec_find_encoder_by_name( vcodec );
875 if ( p != NULL )
876 video_codec_id = p->id;
877 else
878 fprintf( stderr, "%s: video codec %s unrecognised - ignoring\n", __FILE__, vcodec );
879 }
880
881 // Write metadata
882 char *tmp = NULL;
883 int metavalue;
884
885 tmp = mlt_properties_get( properties, "meta.attr.title.markup");
886 if (tmp != NULL) snprintf( oc->title, sizeof(oc->title), "%s", tmp );
887
888 tmp = mlt_properties_get( properties, "meta.attr.comment.markup");
889 if (tmp != NULL) snprintf( oc->comment, sizeof(oc->comment), "%s", tmp );
890
891 tmp = mlt_properties_get( properties, "meta.attr.author.markup");
892 if (tmp != NULL) snprintf( oc->author, sizeof(oc->author), "%s", tmp );
893
894 tmp = mlt_properties_get( properties, "meta.attr.copyright.markup");
895 if (tmp != NULL) snprintf( oc->copyright, sizeof(oc->copyright), "%s", tmp );
896
897 tmp = mlt_properties_get( properties, "meta.attr.album.markup");
898 if (tmp != NULL) snprintf( oc->album, sizeof(oc->album), "%s", tmp );
899
900 metavalue = mlt_properties_get_int( properties, "meta.attr.year.markup");
901 if (metavalue != 0) oc->year = metavalue;
902
903 metavalue = mlt_properties_get_int( properties, "meta.attr.track.markup");
904 if (metavalue != 0) oc->track = metavalue;
905
906 oc->oformat = fmt;
907 snprintf( oc->filename, sizeof(oc->filename), "%s", filename );
908
909 // Add audio and video streams
910 if ( fmt->video_codec != CODEC_ID_NONE )
911 video_st = add_video_stream( this, oc, video_codec_id );
912 if ( fmt->audio_codec != CODEC_ID_NONE )
913 audio_st = add_audio_stream( this, oc, audio_codec_id );
914
915 // Set the parameters (even though we have none...)
916 if ( av_set_parameters(oc, NULL) >= 0 )
917 {
918 oc->preload = ( int )( mlt_properties_get_double( properties, "muxpreload" ) * AV_TIME_BASE );
919 oc->max_delay= ( int )( mlt_properties_get_double( properties, "muxdelay" ) * AV_TIME_BASE );
920
921 // Process properties as AVOptions
922 apply_properties( oc, properties, AV_OPT_FLAG_ENCODING_PARAM );
923
924 if ( video_st && !open_video( oc, video_st ) )
925 video_st = NULL;
926 if ( audio_st )
927 audio_input_frame_size = open_audio( oc, audio_st, audio_outbuf_size );
928
929 // Open the output file, if needed
930 if ( !( fmt->flags & AVFMT_NOFILE ) )
931 {
932 if ( url_fopen( &oc->pb, filename, URL_WRONLY ) < 0 )
933 {
934 fprintf( stderr, "%s: Could not open '%s'\n", __FILE__, filename );
935 mlt_properties_set_int( properties, "running", 0 );
936 }
937 }
938
939 // Write the stream header, if any
940 if ( mlt_properties_get_int( properties, "running" ) )
941 av_write_header( oc );
942 }
943 else
944 {
945 fprintf( stderr, "%s: Invalid output format parameters\n", __FILE__ );
946 mlt_properties_set_int( properties, "running", 0 );
947 }
948
949 // Allocate picture
950 if ( video_st )
951 output = alloc_picture( video_st->codec->pix_fmt, width, height );
952
953 // Last check - need at least one stream
954 if ( audio_st == NULL && video_st == NULL )
955 mlt_properties_set_int( properties, "running", 0 );
956
957 // Get the starting time (can ignore the times above)
958 gettimeofday( &ante, NULL );
959
960 // Loop while running
961 while( mlt_properties_get_int( properties, "running" ) && !terminated )
962 {
963 // Get the frame
964 frame = mlt_consumer_rt_frame( this );
965
966 // Check that we have a frame to work with
967 if ( frame != NULL )
968 {
969 // Increment frames despatched
970 frames ++;
971
972 // Default audio args
973 frame_properties = MLT_FRAME_PROPERTIES( frame );
974
975 // Check for the terminated condition
976 terminated = terminate_on_pause && mlt_properties_get_double( frame_properties, "_speed" ) == 0.0;
977
978 // Get audio and append to the fifo
979 if ( !terminated && audio_st )
980 {
981 samples = mlt_sample_calculator( fps, frequency, count ++ );
982 mlt_frame_get_audio( frame, &pcm, &aud_fmt, &frequency, &channels, &samples );
983
984 // Create the fifo if we don't have one
985 if ( fifo == NULL )
986 {
987 fifo = sample_fifo_init( frequency, channels );
988 mlt_properties_set_data( properties, "sample_fifo", fifo, 0, ( mlt_destructor )sample_fifo_close, NULL );
989 }
990
991 if ( mlt_properties_get_double( frame_properties, "_speed" ) != 1.0 )
992 memset( pcm, 0, samples * channels * 2 );
993
994 // Append the samples
995 sample_fifo_append( fifo, pcm, samples * channels );
996 total_time += ( samples * 1000000 ) / frequency;
997 }
998
999 // Encode the image
1000 if ( !terminated && video_st )
1001 mlt_deque_push_back( queue, frame );
1002 else
1003 mlt_frame_close( frame );
1004 }
1005
1006 // While we have stuff to process, process...
1007 while ( 1 )
1008 {
1009 if (audio_st)
1010 audio_pts = (double)audio_st->pts.val * audio_st->time_base.num / audio_st->time_base.den;
1011 else
1012 audio_pts = 0.0;
1013
1014 if (video_st)
1015 video_pts = (double)video_st->pts.val * video_st->time_base.num / video_st->time_base.den;
1016 else
1017 video_pts = 0.0;
1018
1019 // Write interleaved audio and video frames
1020 if ( !video_st || ( video_st && audio_st && audio_pts < video_pts ) )
1021 {
1022 if ( channels * audio_input_frame_size < sample_fifo_used( fifo ) )
1023 {
1024 AVCodecContext *c;
1025 AVPacket pkt;
1026 av_init_packet( &pkt );
1027
1028 c = audio_st->codec;
1029
1030 sample_fifo_fetch( fifo, buffer, channels * audio_input_frame_size );
1031
1032 pkt.size = avcodec_encode_audio( c, audio_outbuf, audio_outbuf_size, buffer );
1033 // Write the compressed frame in the media file
1034 if ( c->coded_frame && c->coded_frame->pts != AV_NOPTS_VALUE )
1035 pkt.pts = av_rescale_q( c->coded_frame->pts, c->time_base, audio_st->time_base );
1036 pkt.flags |= PKT_FLAG_KEY;
1037 pkt.stream_index= audio_st->index;
1038 pkt.data= audio_outbuf;
1039
1040 if ( pkt.size )
1041 if ( av_interleaved_write_frame( oc, &pkt ) != 0)
1042 fprintf( stderr, "%s: Error while writing audio frame\n", __FILE__ );
1043
1044 audio_pts += c->frame_size;
1045 }
1046 else
1047 {
1048 break;
1049 }
1050 }
1051 else if ( video_st )
1052 {
1053 if ( mlt_deque_count( queue ) )
1054 {
1055 int out_size, ret;
1056 AVCodecContext *c;
1057
1058 frame = mlt_deque_pop_front( queue );
1059 frame_properties = MLT_FRAME_PROPERTIES( frame );
1060
1061 c = video_st->codec;
1062
1063 if ( mlt_properties_get_int( frame_properties, "rendered" ) )
1064 {
1065 int i = 0;
1066 int j = 0;
1067 uint8_t *p;
1068 uint8_t *q;
1069
1070 mlt_events_fire( properties, "consumer-frame-show", frame, NULL );
1071
1072 mlt_frame_get_image( frame, &image, &img_fmt, &img_width, &img_height, 0 );
1073
1074 q = image;
1075
1076 // Convert the mlt frame to an AVPicture
1077 for ( i = 0; i < height; i ++ )
1078 {
1079 p = input->data[ 0 ] + i * input->linesize[ 0 ];
1080 j = width;
1081 while( j -- )
1082 {
1083 *p ++ = *q ++;
1084 *p ++ = *q ++;
1085 }
1086 }
1087
1088 // Do the colour space conversion
1089 #ifdef SWSCALE
1090 struct SwsContext *context = sws_getContext( width, height, PIX_FMT_YUV422,
1091 width, height, video_st->codec->pix_fmt, SWS_FAST_BILINEAR, NULL, NULL, NULL);
1092 sws_scale( context, input->data, input->linesize, 0, height,
1093 output->data, output->linesize);
1094 sws_freeContext( context );
1095 #else
1096 img_convert( ( AVPicture * )output, video_st->codec->pix_fmt, ( AVPicture * )input, PIX_FMT_YUV422, width, height );
1097 #endif
1098
1099 // Apply the alpha if applicable
1100 if ( video_st->codec->pix_fmt == PIX_FMT_RGBA32 )
1101 {
1102 uint8_t *alpha = mlt_frame_get_alpha_mask( frame );
1103 register int n;
1104
1105 for ( i = 0; i < height; i ++ )
1106 {
1107 n = ( width + 7 ) / 8;
1108 p = output->data[ 0 ] + i * output->linesize[ 0 ];
1109
1110 #ifndef __DARWIN__
1111 p += 3;
1112 #endif
1113
1114 switch( width % 8 )
1115 {
1116 case 0: do { *p = *alpha++; p += 4;
1117 case 7: *p = *alpha++; p += 4;
1118 case 6: *p = *alpha++; p += 4;
1119 case 5: *p = *alpha++; p += 4;
1120 case 4: *p = *alpha++; p += 4;
1121 case 3: *p = *alpha++; p += 4;
1122 case 2: *p = *alpha++; p += 4;
1123 case 1: *p = *alpha++; p += 4;
1124 }
1125 while( --n );
1126 }
1127 }
1128 }
1129 }
1130
1131 if (oc->oformat->flags & AVFMT_RAWPICTURE)
1132 {
1133 // raw video case. The API will change slightly in the near future for that
1134 AVPacket pkt;
1135 av_init_packet(&pkt);
1136
1137 pkt.flags |= PKT_FLAG_KEY;
1138 pkt.stream_index= video_st->index;
1139 pkt.data= (uint8_t *)output;
1140 pkt.size= sizeof(AVPicture);
1141
1142 ret = av_write_frame(oc, &pkt);
1143 video_pts += c->frame_size;
1144 }
1145 else
1146 {
1147 // Set the quality
1148 output->quality = video_st->quality;
1149
1150 // Set frame interlace hints
1151 output->interlaced_frame = !mlt_properties_get_int( frame_properties, "progressive" );
1152 output->top_field_first = mlt_properties_get_int( frame_properties, "top_field_first" );
1153
1154 // Encode the image
1155 out_size = avcodec_encode_video(c, video_outbuf, video_outbuf_size, output );
1156
1157 // If zero size, it means the image was buffered
1158 if (out_size > 0)
1159 {
1160 AVPacket pkt;
1161 av_init_packet( &pkt );
1162
1163 if ( c->coded_frame && c->coded_frame->pts != AV_NOPTS_VALUE )
1164 pkt.pts= av_rescale_q( c->coded_frame->pts, c->time_base, video_st->time_base );
1165 if( c->coded_frame && c->coded_frame->key_frame )
1166 pkt.flags |= PKT_FLAG_KEY;
1167 pkt.stream_index= video_st->index;
1168 pkt.data= video_outbuf;
1169 pkt.size= out_size;
1170
1171 // write the compressed frame in the media file
1172 ret = av_interleaved_write_frame(oc, &pkt);
1173 video_pts += c->frame_size;
1174
1175 // Dual pass logging
1176 if ( mlt_properties_get_data( properties, "_logfile", NULL ) && c->stats_out)
1177 fprintf( mlt_properties_get_data( properties, "_logfile", NULL ), "%s", c->stats_out );
1178 }
1179 else
1180 {
1181 fprintf( stderr, "%s: error with video encode\n", __FILE__ );
1182 }
1183 }
1184 frame_count++;
1185 mlt_frame_close( frame );
1186 }
1187 else
1188 {
1189 break;
1190 }
1191 }
1192 }
1193
1194 if ( real_time_output == 1 && frames % 12 == 0 )
1195 {
1196 long passed = time_difference( &ante );
1197 if ( fifo != NULL )
1198 {
1199 long pending = ( ( ( long )sample_fifo_used( fifo ) * 1000 ) / frequency ) * 1000;
1200 passed -= pending;
1201 }
1202 if ( passed < total_time )
1203 {
1204 long total = ( total_time - passed );
1205 struct timespec t = { total / 1000000, ( total % 1000000 ) * 1000 };
1206 nanosleep( &t, NULL );
1207 }
1208 }
1209 }
1210
1211 #ifdef FLUSH
1212 if ( ! real_time_output )
1213 {
1214 // Flush audio fifo
1215 if ( audio_st && audio_st->codec->frame_size > 1 ) for (;;)
1216 {
1217 AVCodecContext *c = audio_st->codec;
1218 AVPacket pkt;
1219 av_init_packet( &pkt );
1220 pkt.size = 0;
1221
1222 if ( /*( c->capabilities & CODEC_CAP_SMALL_LAST_FRAME ) &&*/
1223 ( channels * audio_input_frame_size < sample_fifo_used( fifo ) ) )
1224 {
1225 sample_fifo_fetch( fifo, buffer, channels * audio_input_frame_size );
1226 pkt.size = avcodec_encode_audio( c, audio_outbuf, audio_outbuf_size, buffer );
1227 }
1228 if ( pkt.size <= 0 )
1229 pkt.size = avcodec_encode_audio( c, audio_outbuf, audio_outbuf_size, NULL );
1230 if ( pkt.size <= 0 )
1231 break;
1232
1233 // Write the compressed frame in the media file
1234 if ( c->coded_frame && c->coded_frame->pts != AV_NOPTS_VALUE )
1235 pkt.pts = av_rescale_q( c->coded_frame->pts, c->time_base, audio_st->time_base );
1236 pkt.flags |= PKT_FLAG_KEY;
1237 pkt.stream_index = audio_st->index;
1238 pkt.data = audio_outbuf;
1239 if ( av_interleaved_write_frame( oc, &pkt ) != 0 )
1240 {
1241 fprintf( stderr, "%s: Error while writing flushed audio frame\n", __FILE__ );
1242 break;
1243 }
1244 }
1245
1246 // Flush video
1247 if ( video_st && !( oc->oformat->flags & AVFMT_RAWPICTURE ) ) for (;;)
1248 {
1249 AVCodecContext *c = video_st->codec;
1250 AVPacket pkt;
1251 av_init_packet( &pkt );
1252
1253 // Encode the image
1254 pkt.size = avcodec_encode_video( c, video_outbuf, video_outbuf_size, NULL );
1255 if ( pkt.size <= 0 )
1256 break;
1257
1258 if ( c->coded_frame && c->coded_frame->pts != AV_NOPTS_VALUE )
1259 pkt.pts= av_rescale_q( c->coded_frame->pts, c->time_base, video_st->time_base );
1260 if( c->coded_frame && c->coded_frame->key_frame )
1261 pkt.flags |= PKT_FLAG_KEY;
1262 pkt.stream_index = video_st->index;
1263 pkt.data = video_outbuf;
1264
1265 // write the compressed frame in the media file
1266 if ( av_interleaved_write_frame( oc, &pkt ) != 0 )
1267 {
1268 fprintf( stderr, "%s: Error while writing flushed video frame\n". __FILE__ );
1269 break;
1270 }
1271 }
1272 }
1273 #endif
1274
1275 // close each codec
1276 if (video_st)
1277 close_video(oc, video_st);
1278 if (audio_st)
1279 close_audio(oc, audio_st);
1280
1281 // Write the trailer, if any
1282 av_write_trailer(oc);
1283
1284 // Free the streams
1285 for(i = 0; i < oc->nb_streams; i++)
1286 av_freep(&oc->streams[i]);
1287
1288 // Close the output file
1289 if (!(fmt->flags & AVFMT_NOFILE))
1290 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(0<<8)+0)
1291 url_fclose(oc->pb);
1292 #else
1293 url_fclose(&oc->pb);
1294 #endif
1295
1296 // Clean up input and output frames
1297 if ( output )
1298 av_free( output->data[0] );
1299 av_free( output );
1300 av_free( input->data[0] );
1301 av_free( input );
1302 av_free( video_outbuf );
1303 av_free( buffer );
1304
1305 // Free the stream
1306 av_free(oc);
1307
1308 // Just in case we terminated on pause
1309 mlt_properties_set_int( properties, "running", 0 );
1310
1311 mlt_consumer_stopped( this );
1312
1313 return NULL;
1314 }
1315
1316 /** Close the consumer.
1317 */
1318
1319 static void consumer_close( mlt_consumer this )
1320 {
1321 // Stop the consumer
1322 mlt_consumer_stop( this );
1323
1324 // Close the parent
1325 mlt_consumer_close( this );
1326
1327 // Free the memory
1328 free( this );
1329 }
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