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consumer_avformat.c: Fix crash introduced by FFmpeg revision 15367 (check that muxer...
[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 mlt_properties_set_int( properties, "width", ( width / 2 ) * 2 );
225 mlt_properties_set_int( properties, "height", ( height / 2 ) * 2 );
226
227 // Apply AVOptions that are synonyms for standard mlt_consumer options
228 if ( mlt_properties_get( properties, "ac" ) )
229 mlt_properties_set_int( properties, "channels", mlt_properties_get_int( properties, "ac" ) );
230 if ( mlt_properties_get( properties, "ar" ) )
231 mlt_properties_set_int( properties, "frequency", mlt_properties_get_int( properties, "ar" ) );
232
233 // Assign the thread to properties
234 mlt_properties_set_data( properties, "thread", thread, sizeof( pthread_t ), free, NULL );
235
236 // Set the running state
237 mlt_properties_set_int( properties, "running", 1 );
238
239 // Create the thread
240 pthread_create( thread, NULL, consumer_thread, this );
241 }
242 return 0;
243 }
244
245 /** Stop the consumer.
246 */
247
248 static int consumer_stop( mlt_consumer this )
249 {
250 // Get the properties
251 mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
252
253 // Check that we're running
254 if ( mlt_properties_get_int( properties, "running" ) )
255 {
256 // Get the thread
257 pthread_t *thread = mlt_properties_get_data( properties, "thread", NULL );
258
259 // Stop the thread
260 mlt_properties_set_int( properties, "running", 0 );
261
262 // Wait for termination
263 pthread_join( *thread, NULL );
264 }
265
266 return 0;
267 }
268
269 /** Determine if the consumer is stopped.
270 */
271
272 static int consumer_is_stopped( mlt_consumer this )
273 {
274 // Get the properties
275 mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
276 return !mlt_properties_get_int( properties, "running" );
277 }
278
279 /** Process properties as AVOptions and apply to AV context obj
280 */
281
282 static void apply_properties( void *obj, mlt_properties properties, int flags )
283 {
284 int i;
285 int count = mlt_properties_count( properties );
286 for ( i = 0; i < count; i++ )
287 {
288 const char *opt_name = mlt_properties_get_name( properties, i );
289 const AVOption *opt = av_find_opt( obj, opt_name, NULL, flags, flags );
290 if ( opt != NULL )
291 av_set_string( obj, opt_name, mlt_properties_get( properties, opt_name) );
292 }
293 }
294
295 /** Add an audio output stream
296 */
297
298 static AVStream *add_audio_stream( mlt_consumer this, AVFormatContext *oc, int codec_id )
299 {
300 // Get the properties
301 mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
302
303 // Create a new stream
304 AVStream *st = av_new_stream( oc, 1 );
305
306 // If created, then initialise from properties
307 if ( st != NULL )
308 {
309 AVCodecContext *c = st->codec;
310
311 // Establish defaults from AVOptions
312 avcodec_get_context_defaults2( c, CODEC_TYPE_AUDIO );
313
314 c->codec_id = codec_id;
315 c->codec_type = CODEC_TYPE_AUDIO;
316
317 // Setup multi-threading
318 int thread_count = mlt_properties_get_int( properties, "threads" );
319 if ( thread_count == 0 && getenv( "MLT_AVFORMAT_THREADS" ) )
320 thread_count = atoi( getenv( "MLT_AVFORMAT_THREADS" ) );
321 if ( thread_count > 1 )
322 avcodec_thread_init( c, thread_count );
323
324 if (oc->oformat->flags & AVFMT_GLOBALHEADER)
325 c->flags |= CODEC_FLAG_GLOBAL_HEADER;
326
327 // Allow the user to override the audio fourcc
328 if ( mlt_properties_get( properties, "atag" ) )
329 {
330 char *tail = NULL;
331 char *arg = mlt_properties_get( properties, "atag" );
332 int tag = strtol( arg, &tail, 0);
333 if( !tail || *tail )
334 tag = arg[ 0 ] + ( arg[ 1 ] << 8 ) + ( arg[ 2 ] << 16 ) + ( arg[ 3 ] << 24 );
335 c->codec_tag = tag;
336 }
337
338 // Process properties as AVOptions
339 apply_properties( c, properties, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM );
340
341 int audio_qscale = mlt_properties_get_int( properties, "aq" );
342 if ( audio_qscale > QSCALE_NONE )
343 {
344 c->flags |= CODEC_FLAG_QSCALE;
345 c->global_quality = st->quality = FF_QP2LAMBDA * audio_qscale;
346 }
347
348 // Set parameters controlled by MLT
349 c->sample_rate = mlt_properties_get_int( properties, "frequency" );
350 c->channels = mlt_properties_get_int( properties, "channels" );
351
352 if ( mlt_properties_get( properties, "alang" ) != NULL )
353 strncpy( st->language, mlt_properties_get( properties, "alang" ), sizeof( st->language ) );
354 }
355 else
356 {
357 fprintf( stderr, "%s: Could not allocate a stream for audio\n", __FILE__ );
358 }
359
360 return st;
361 }
362
363 static int open_audio( AVFormatContext *oc, AVStream *st, int audio_outbuf_size )
364 {
365 // We will return the audio input size from here
366 int audio_input_frame_size = 0;
367
368 // Get the context
369 AVCodecContext *c = st->codec;
370
371 // Find the encoder
372 AVCodec *codec = avcodec_find_encoder( c->codec_id );
373
374 // Continue if codec found and we can open it
375 if ( codec != NULL && avcodec_open( c, codec ) >= 0 )
376 {
377 // ugly hack for PCM codecs (will be removed ASAP with new PCM
378 // support to compute the input frame size in samples
379 if ( c->frame_size <= 1 )
380 {
381 audio_input_frame_size = audio_outbuf_size / c->channels;
382 switch(st->codec->codec_id)
383 {
384 case CODEC_ID_PCM_S16LE:
385 case CODEC_ID_PCM_S16BE:
386 case CODEC_ID_PCM_U16LE:
387 case CODEC_ID_PCM_U16BE:
388 audio_input_frame_size >>= 1;
389 break;
390 default:
391 break;
392 }
393 }
394 else
395 {
396 audio_input_frame_size = c->frame_size;
397 }
398
399 // Some formats want stream headers to be seperate (hmm)
400 if( !strcmp( oc->oformat->name, "mp4" ) ||
401 !strcmp( oc->oformat->name, "mov" ) ||
402 !strcmp( oc->oformat->name, "3gp" ) )
403 c->flags |= CODEC_FLAG_GLOBAL_HEADER;
404 }
405 else
406 {
407 fprintf( stderr, "%s: Unable to encode audio - disabling audio output.\n", __FILE__ );
408 }
409
410 return audio_input_frame_size;
411 }
412
413 static void close_audio( AVFormatContext *oc, AVStream *st )
414 {
415 avcodec_close( st->codec );
416 }
417
418 /** Add a video output stream
419 */
420
421 static AVStream *add_video_stream( mlt_consumer this, AVFormatContext *oc, int codec_id )
422 {
423 // Get the properties
424 mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
425
426 // Create a new stream
427 AVStream *st = av_new_stream( oc, 0 );
428
429 if ( st != NULL )
430 {
431 char *pix_fmt = mlt_properties_get( properties, "pix_fmt" );
432 AVCodecContext *c = st->codec;
433
434 // Establish defaults from AVOptions
435 avcodec_get_context_defaults2( c, CODEC_TYPE_VIDEO );
436
437 c->codec_id = codec_id;
438 c->codec_type = CODEC_TYPE_VIDEO;
439
440 // Setup multi-threading
441 int thread_count = mlt_properties_get_int( properties, "threads" );
442 if ( thread_count == 0 && getenv( "MLT_AVFORMAT_THREADS" ) )
443 thread_count = atoi( getenv( "MLT_AVFORMAT_THREADS" ) );
444 if ( thread_count > 1 )
445 avcodec_thread_init( c, thread_count );
446
447 // Process properties as AVOptions
448 apply_properties( c, properties, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM );
449
450 // Set options controlled by MLT
451 c->width = mlt_properties_get_int( properties, "width" );
452 c->height = mlt_properties_get_int( properties, "height" );
453 c->time_base.num = mlt_properties_get_int( properties, "frame_rate_den" );
454 c->time_base.den = mlt_properties_get_int( properties, "frame_rate_num" );
455 c->pix_fmt = pix_fmt ? avcodec_get_pix_fmt( pix_fmt ) : PIX_FMT_YUV420P;
456
457 if ( codec_id == CODEC_ID_DVVIDEO )
458 {
459 // Compensate for FFmpeg's notion of DV aspect ratios, which are
460 // based upon a width of 704. Since we do not have a normaliser
461 // that crops (nor is cropping 720 wide ITU-R 601 video always desirable)
462 // we just coerce the values to facilitate a passive behaviour through
463 // the rescale normaliser when using equivalent producers and consumers.
464 // = display_aspect / (width * height)
465 double ar = mlt_properties_get_double( properties, "aspect_ratio" );
466 if ( ar == 8.0/9.0 ) // 4:3 NTSC
467 {
468 c->sample_aspect_ratio.num = 10;
469 c->sample_aspect_ratio.den = 11;
470 st->sample_aspect_ratio.num = 10;
471 st->sample_aspect_ratio.den = 11;
472 }
473 else if ( ar == 16.0/15.0 ) // 4:3 PAL
474 {
475 c->sample_aspect_ratio.num = 159;
476 c->sample_aspect_ratio.den = 54;
477 st->sample_aspect_ratio.num = 159;
478 st->sample_aspect_ratio.den = 54;
479 }
480 else if ( ar == 32.0/27.0 ) // 16:9 NTSC
481 {
482 c->sample_aspect_ratio.num = 40;
483 c->sample_aspect_ratio.den = 33;
484 st->sample_aspect_ratio.num = 40;
485 st->sample_aspect_ratio.den = 33;
486 }
487 else // 16:9 PAL
488 {
489 c->sample_aspect_ratio.num = 118;
490 c->sample_aspect_ratio.den = 81;
491 st->sample_aspect_ratio.num = 118;
492 st->sample_aspect_ratio.den = 81;
493 }
494 }
495 else if ( mlt_properties_get( properties, "aspect" ) )
496 {
497 double ar = mlt_properties_get_double( properties, "aspect" );
498 c->sample_aspect_ratio = av_d2q( ar * c->height / c->width , 255);
499 st->sample_aspect_ratio = av_d2q( ar * c->height / c->width , 255);
500 }
501 else
502 {
503 c->sample_aspect_ratio.num = mlt_properties_get_int( properties, "sample_aspect_num" );
504 c->sample_aspect_ratio.den = mlt_properties_get_int( properties, "sample_aspect_den" );
505 st->sample_aspect_ratio.num = mlt_properties_get_int( properties, "sample_aspect_num" );
506 st->sample_aspect_ratio.den = mlt_properties_get_int( properties, "sample_aspect_den" );
507 }
508
509 if ( mlt_properties_get_double( properties, "qscale" ) > 0 )
510 {
511 c->flags |= CODEC_FLAG_QSCALE;
512 st->quality = FF_QP2LAMBDA * mlt_properties_get_double( properties, "qscale" );
513 }
514
515 // Allow the user to override the video fourcc
516 if ( mlt_properties_get( properties, "vtag" ) )
517 {
518 char *tail = NULL;
519 const char *arg = mlt_properties_get( properties, "vtag" );
520 int tag = strtol( arg, &tail, 0);
521 if( !tail || *tail )
522 tag = arg[ 0 ] + ( arg[ 1 ] << 8 ) + ( arg[ 2 ] << 16 ) + ( arg[ 3 ] << 24 );
523 c->codec_tag = tag;
524 }
525
526 // Some formats want stream headers to be seperate
527 if ( oc->oformat->flags & AVFMT_GLOBALHEADER )
528 c->flags |= CODEC_FLAG_GLOBAL_HEADER;
529
530 // Translate these standard mlt consumer properties to ffmpeg
531 if ( mlt_properties_get_int( properties, "progressive" ) == 0 &&
532 mlt_properties_get_int( properties, "deinterlace" ) == 0 )
533 {
534 if ( mlt_properties_get_int( properties, "ildct" ) )
535 c->flags |= CODEC_FLAG_INTERLACED_DCT;
536 if ( mlt_properties_get_int( properties, "ilme" ) )
537 c->flags |= CODEC_FLAG_INTERLACED_ME;
538 }
539
540 // parse the ratecontrol override string
541 int i;
542 char *rc_override = mlt_properties_get( properties, "rc_override" );
543 for ( i = 0; rc_override; i++ )
544 {
545 int start, end, q;
546 int e = sscanf( rc_override, "%d,%d,%d", &start, &end, &q );
547 if ( e != 3 )
548 fprintf( stderr, "%s: Error parsing rc_override\n", __FILE__ );
549 c->rc_override = av_realloc( c->rc_override, sizeof( RcOverride ) * ( i + 1 ) );
550 c->rc_override[i].start_frame = start;
551 c->rc_override[i].end_frame = end;
552 if ( q > 0 )
553 {
554 c->rc_override[i].qscale = q;
555 c->rc_override[i].quality_factor = 1.0;
556 }
557 else
558 {
559 c->rc_override[i].qscale = 0;
560 c->rc_override[i].quality_factor = -q / 100.0;
561 }
562 rc_override = strchr( rc_override, '/' );
563 if ( rc_override )
564 rc_override++;
565 }
566 c->rc_override_count = i;
567 if ( !c->rc_initial_buffer_occupancy )
568 c->rc_initial_buffer_occupancy = c->rc_buffer_size * 3/4;
569 c->intra_dc_precision = mlt_properties_get_int( properties, "dc" ) - 8;
570
571 // Setup dual-pass
572 i = mlt_properties_get_int( properties, "pass" );
573 if ( i == 1 )
574 c->flags |= CODEC_FLAG_PASS1;
575 else if ( i == 2 )
576 c->flags |= CODEC_FLAG_PASS2;
577 if ( c->flags & ( CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2 ) )
578 {
579 char logfilename[1024];
580 FILE *f;
581 int size;
582 char *logbuffer;
583
584 snprintf( logfilename, sizeof(logfilename), "%s_2pass.log",
585 mlt_properties_get( properties, "passlogfile" ) ? mlt_properties_get( properties, "passlogfile" ) : mlt_properties_get( properties, "target" ) );
586 if ( c->flags & CODEC_FLAG_PASS1 )
587 {
588 f = fopen( logfilename, "w" );
589 if ( !f )
590 perror( logfilename );
591 else
592 mlt_properties_set_data( properties, "_logfile", f, 0, ( mlt_destructor )fclose, NULL );
593 }
594 else
595 {
596 /* read the log file */
597 f = fopen( logfilename, "r" );
598 if ( !f )
599 {
600 perror(logfilename);
601 }
602 else
603 {
604 fseek( f, 0, SEEK_END );
605 size = ftell( f );
606 fseek( f, 0, SEEK_SET );
607 logbuffer = av_malloc( size + 1 );
608 if ( !logbuffer )
609 fprintf( stderr, "%s: Could not allocate log buffer\n", __FILE__ );
610 else
611 {
612 size = fread( logbuffer, 1, size, f );
613 fclose( f );
614 logbuffer[size] = '\0';
615 c->stats_in = logbuffer;
616 mlt_properties_set_data( properties, "_logbuffer", logbuffer, 0, ( mlt_destructor )av_free, NULL );
617 }
618 }
619 }
620 }
621 }
622 else
623 {
624 fprintf( stderr, "%s: Could not allocate a stream for video\n", __FILE__ );
625 }
626
627 return st;
628 }
629
630 static AVFrame *alloc_picture( int pix_fmt, int width, int height )
631 {
632 // Allocate a frame
633 AVFrame *picture = avcodec_alloc_frame();
634
635 // Determine size of the
636 int size = avpicture_get_size(pix_fmt, width, height);
637
638 // Allocate the picture buf
639 uint8_t *picture_buf = av_malloc(size);
640
641 // If we have both, then fill the image
642 if ( picture != NULL && picture_buf != NULL )
643 {
644 // Fill the frame with the allocated buffer
645 avpicture_fill( (AVPicture *)picture, picture_buf, pix_fmt, width, height);
646 }
647 else
648 {
649 // Something failed - clean up what we can
650 av_free( picture );
651 av_free( picture_buf );
652 picture = NULL;
653 }
654
655 return picture;
656 }
657
658 static int open_video(AVFormatContext *oc, AVStream *st)
659 {
660 // Get the codec
661 AVCodecContext *video_enc = st->codec;
662
663 // find the video encoder
664 AVCodec *codec = avcodec_find_encoder( video_enc->codec_id );
665
666 if( codec && codec->pix_fmts )
667 {
668 const enum PixelFormat *p = codec->pix_fmts;
669 for( ; *p!=-1; p++ )
670 {
671 if( *p == video_enc->pix_fmt )
672 break;
673 }
674 if( *p == -1 )
675 video_enc->pix_fmt = codec->pix_fmts[ 0 ];
676 }
677
678 // Open the codec safely
679 return codec != NULL && avcodec_open( video_enc, codec ) >= 0;
680 }
681
682 void close_video(AVFormatContext *oc, AVStream *st)
683 {
684 avcodec_close(st->codec);
685 }
686
687 static inline long time_difference( struct timeval *time1 )
688 {
689 struct timeval time2;
690 gettimeofday( &time2, NULL );
691 return time2.tv_sec * 1000000 + time2.tv_usec - time1->tv_sec * 1000000 - time1->tv_usec;
692 }
693
694 /** The main thread - the argument is simply the consumer.
695 */
696
697 static void *consumer_thread( void *arg )
698 {
699 // Map the argument to the object
700 mlt_consumer this = arg;
701
702 // Get the properties
703 mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
704
705 // Get the terminate on pause property
706 int terminate_on_pause = mlt_properties_get_int( properties, "terminate_on_pause" );
707 int terminated = 0;
708
709 // Determine if feed is slow (for realtime stuff)
710 int real_time_output = mlt_properties_get_int( properties, "real_time" );
711
712 // Time structures
713 struct timeval ante;
714
715 // Get the frame rate
716 double fps = mlt_properties_get_double( properties, "fps" );
717
718 // Get width and height
719 int width = mlt_properties_get_int( properties, "width" );
720 int height = mlt_properties_get_int( properties, "height" );
721 int img_width = width;
722 int img_height = height;
723
724 // Get default audio properties
725 mlt_audio_format aud_fmt = mlt_audio_pcm;
726 int channels = mlt_properties_get_int( properties, "channels" );
727 int frequency = mlt_properties_get_int( properties, "frequency" );
728 int16_t *pcm = NULL;
729 int samples = 0;
730
731 // AVFormat audio buffer and frame size
732 int audio_outbuf_size = 10000;
733 uint8_t *audio_outbuf = av_malloc( audio_outbuf_size );
734 int audio_input_frame_size = 0;
735
736 // AVFormat video buffer and frame count
737 int frame_count = 0;
738 int video_outbuf_size = ( 1024 * 1024 );
739 uint8_t *video_outbuf = av_malloc( video_outbuf_size );
740
741 // Used for the frame properties
742 mlt_frame frame = NULL;
743 mlt_properties frame_properties = NULL;
744
745 // Get the queues
746 mlt_deque queue = mlt_properties_get_data( properties, "frame_queue", NULL );
747 sample_fifo fifo = mlt_properties_get_data( properties, "sample_fifo", NULL );
748
749 // Need two av pictures for converting
750 AVFrame *output = NULL;
751 AVFrame *input = alloc_picture( PIX_FMT_YUV422, width, height );
752
753 // For receiving images from an mlt_frame
754 uint8_t *image;
755 mlt_image_format img_fmt = mlt_image_yuv422;
756
757 // For receiving audio samples back from the fifo
758 int16_t *buffer = av_malloc( 48000 * 2 );
759 int count = 0;
760
761 // Allocate the context
762 AVFormatContext *oc = av_alloc_format_context( );
763
764 // Streams
765 AVStream *audio_st = NULL;
766 AVStream *video_st = NULL;
767
768 // Time stamps
769 double audio_pts = 0;
770 double video_pts = 0;
771
772 // Loop variable
773 int i;
774
775 // Frames despatched
776 long int frames = 0;
777 long int total_time = 0;
778
779 // Determine the format
780 AVOutputFormat *fmt = NULL;
781 char *filename = mlt_properties_get( properties, "target" );
782 char *format = mlt_properties_get( properties, "f" );
783 char *vcodec = mlt_properties_get( properties, "vcodec" );
784 char *acodec = mlt_properties_get( properties, "acodec" );
785
786 // Used to store and override codec ids
787 int audio_codec_id;
788 int video_codec_id;
789
790 // Check for user selected format first
791 if ( format != NULL )
792 fmt = guess_format( format, NULL, NULL );
793
794 // Otherwise check on the filename
795 if ( fmt == NULL && filename != NULL )
796 fmt = guess_format( NULL, filename, NULL );
797
798 // Otherwise default to mpeg
799 if ( fmt == NULL )
800 fmt = guess_format( "mpeg", NULL, NULL );
801
802 // We need a filename - default to stdout?
803 if ( filename == NULL || !strcmp( filename, "" ) )
804 filename = "pipe:";
805
806 // Get the codec ids selected
807 audio_codec_id = fmt->audio_codec;
808 video_codec_id = fmt->video_codec;
809
810 // Check for audio codec overides
811 if ( acodec != NULL )
812 {
813 AVCodec *p = avcodec_find_encoder_by_name( acodec );
814 if ( p != NULL )
815 audio_codec_id = p->id;
816 else
817 fprintf( stderr, "%s: audio codec %s unrecognised - ignoring\n", __FILE__, acodec );
818 }
819
820 // Check for video codec overides
821 if ( vcodec != NULL )
822 {
823 AVCodec *p = avcodec_find_encoder_by_name( vcodec );
824 if ( p != NULL )
825 video_codec_id = p->id;
826 else
827 fprintf( stderr, "%s: video codec %s unrecognised - ignoring\n", __FILE__, vcodec );
828 }
829
830 // Write metadata
831 char *tmp = NULL;
832 int metavalue;
833
834 tmp = mlt_properties_get( properties, "meta.attr.title.markup");
835 if (tmp != NULL) snprintf( oc->title, sizeof(oc->title), "%s", tmp );
836
837 tmp = mlt_properties_get( properties, "meta.attr.comment.markup");
838 if (tmp != NULL) snprintf( oc->comment, sizeof(oc->comment), "%s", tmp );
839
840 tmp = mlt_properties_get( properties, "meta.attr.author.markup");
841 if (tmp != NULL) snprintf( oc->author, sizeof(oc->author), "%s", tmp );
842
843 tmp = mlt_properties_get( properties, "meta.attr.copyright.markup");
844 if (tmp != NULL) snprintf( oc->copyright, sizeof(oc->copyright), "%s", tmp );
845
846 tmp = mlt_properties_get( properties, "meta.attr.album.markup");
847 if (tmp != NULL) snprintf( oc->album, sizeof(oc->album), "%s", tmp );
848
849 metavalue = mlt_properties_get_int( properties, "meta.attr.year.markup");
850 if (metavalue != 0) oc->year = metavalue;
851
852 metavalue = mlt_properties_get_int( properties, "meta.attr.track.markup");
853 if (metavalue != 0) oc->track = metavalue;
854
855 oc->oformat = fmt;
856 snprintf( oc->filename, sizeof(oc->filename), "%s", filename );
857
858 // Add audio and video streams
859 if ( fmt->video_codec != CODEC_ID_NONE )
860 video_st = add_video_stream( this, oc, video_codec_id );
861 if ( fmt->audio_codec != CODEC_ID_NONE )
862 audio_st = add_audio_stream( this, oc, audio_codec_id );
863
864 // Set the parameters (even though we have none...)
865 if ( av_set_parameters(oc, NULL) >= 0 )
866 {
867 oc->preload = ( int )( mlt_properties_get_double( properties, "muxpreload" ) * AV_TIME_BASE );
868 oc->max_delay= ( int )( mlt_properties_get_double( properties, "muxdelay" ) * AV_TIME_BASE );
869
870 // Process properties as AVOptions
871 apply_properties( oc, properties, AV_OPT_FLAG_ENCODING_PARAM );
872
873 if ( video_st && !open_video( oc, video_st ) )
874 video_st = NULL;
875 if ( audio_st )
876 audio_input_frame_size = open_audio( oc, audio_st, audio_outbuf_size );
877
878 // Open the output file, if needed
879 if ( !( fmt->flags & AVFMT_NOFILE ) )
880 {
881 if ( url_fopen( &oc->pb, filename, URL_WRONLY ) < 0 )
882 {
883 fprintf( stderr, "%s: Could not open '%s'\n", __FILE__, filename );
884 mlt_properties_set_int( properties, "running", 0 );
885 }
886 }
887
888 // Write the stream header, if any
889 if ( mlt_properties_get_int( properties, "running" ) )
890 av_write_header( oc );
891 }
892 else
893 {
894 fprintf( stderr, "%s: Invalid output format parameters\n", __FILE__ );
895 mlt_properties_set_int( properties, "running", 0 );
896 }
897
898 // Allocate picture
899 if ( video_st )
900 output = alloc_picture( video_st->codec->pix_fmt, width, height );
901
902 // Last check - need at least one stream
903 if ( audio_st == NULL && video_st == NULL )
904 mlt_properties_set_int( properties, "running", 0 );
905
906 // Get the starting time (can ignore the times above)
907 gettimeofday( &ante, NULL );
908
909 // Loop while running
910 while( mlt_properties_get_int( properties, "running" ) && !terminated )
911 {
912 // Get the frame
913 frame = mlt_consumer_rt_frame( this );
914
915 // Check that we have a frame to work with
916 if ( frame != NULL )
917 {
918 // Increment frames despatched
919 frames ++;
920
921 // Default audio args
922 frame_properties = MLT_FRAME_PROPERTIES( frame );
923
924 // Check for the terminated condition
925 terminated = terminate_on_pause && mlt_properties_get_double( frame_properties, "_speed" ) == 0.0;
926
927 // Get audio and append to the fifo
928 if ( !terminated && audio_st )
929 {
930 samples = mlt_sample_calculator( fps, frequency, count ++ );
931 mlt_frame_get_audio( frame, &pcm, &aud_fmt, &frequency, &channels, &samples );
932
933 // Create the fifo if we don't have one
934 if ( fifo == NULL )
935 {
936 fifo = sample_fifo_init( frequency, channels );
937 mlt_properties_set_data( properties, "sample_fifo", fifo, 0, ( mlt_destructor )sample_fifo_close, NULL );
938 }
939
940 if ( mlt_properties_get_double( frame_properties, "_speed" ) != 1.0 )
941 memset( pcm, 0, samples * channels * 2 );
942
943 // Append the samples
944 sample_fifo_append( fifo, pcm, samples * channels );
945 total_time += ( samples * 1000000 ) / frequency;
946 }
947
948 // Encode the image
949 if ( !terminated && video_st )
950 mlt_deque_push_back( queue, frame );
951 else
952 mlt_frame_close( frame );
953 }
954
955 // While we have stuff to process, process...
956 while ( 1 )
957 {
958 if (audio_st)
959 audio_pts = (double)audio_st->pts.val * audio_st->time_base.num / audio_st->time_base.den;
960 else
961 audio_pts = 0.0;
962
963 if (video_st)
964 video_pts = (double)video_st->pts.val * video_st->time_base.num / video_st->time_base.den;
965 else
966 video_pts = 0.0;
967
968 // Write interleaved audio and video frames
969 if ( !video_st || ( video_st && audio_st && audio_pts < video_pts ) )
970 {
971 if ( channels * audio_input_frame_size < sample_fifo_used( fifo ) )
972 {
973 AVCodecContext *c;
974 AVPacket pkt;
975 av_init_packet( &pkt );
976
977 c = audio_st->codec;
978
979 sample_fifo_fetch( fifo, buffer, channels * audio_input_frame_size );
980
981 pkt.size = avcodec_encode_audio( c, audio_outbuf, audio_outbuf_size, buffer );
982 // Write the compressed frame in the media file
983 if ( c->coded_frame && c->coded_frame->pts != AV_NOPTS_VALUE )
984 pkt.pts = av_rescale_q( c->coded_frame->pts, c->time_base, audio_st->time_base );
985 pkt.flags |= PKT_FLAG_KEY;
986 pkt.stream_index= audio_st->index;
987 pkt.data= audio_outbuf;
988
989 if ( pkt.size )
990 if ( av_interleaved_write_frame( oc, &pkt ) != 0)
991 fprintf( stderr, "%s: Error while writing audio frame\n", __FILE__ );
992
993 audio_pts += c->frame_size;
994 }
995 else
996 {
997 break;
998 }
999 }
1000 else if ( video_st )
1001 {
1002 if ( mlt_deque_count( queue ) )
1003 {
1004 int out_size, ret;
1005 AVCodecContext *c;
1006
1007 frame = mlt_deque_pop_front( queue );
1008 frame_properties = MLT_FRAME_PROPERTIES( frame );
1009
1010 c = video_st->codec;
1011
1012 if ( mlt_properties_get_int( frame_properties, "rendered" ) )
1013 {
1014 int i = 0;
1015 int j = 0;
1016 uint8_t *p;
1017 uint8_t *q;
1018
1019 mlt_events_fire( properties, "consumer-frame-show", frame, NULL );
1020
1021 mlt_frame_get_image( frame, &image, &img_fmt, &img_width, &img_height, 0 );
1022
1023 q = image;
1024
1025 // Convert the mlt frame to an AVPicture
1026 for ( i = 0; i < height; i ++ )
1027 {
1028 p = input->data[ 0 ] + i * input->linesize[ 0 ];
1029 j = width;
1030 while( j -- )
1031 {
1032 *p ++ = *q ++;
1033 *p ++ = *q ++;
1034 }
1035 }
1036
1037 // Do the colour space conversion
1038 #ifdef SWSCALE
1039 struct SwsContext *context = sws_getContext( width, height, PIX_FMT_YUV422,
1040 width, height, video_st->codec->pix_fmt, SWS_FAST_BILINEAR, NULL, NULL, NULL);
1041 sws_scale( context, input->data, input->linesize, 0, height,
1042 output->data, output->linesize);
1043 sws_freeContext( context );
1044 #else
1045 img_convert( ( AVPicture * )output, video_st->codec->pix_fmt, ( AVPicture * )input, PIX_FMT_YUV422, width, height );
1046 #endif
1047
1048 // Apply the alpha if applicable
1049 if ( video_st->codec->pix_fmt == PIX_FMT_RGBA32 )
1050 {
1051 uint8_t *alpha = mlt_frame_get_alpha_mask( frame );
1052 register int n;
1053
1054 for ( i = 0; i < height; i ++ )
1055 {
1056 n = ( width + 7 ) / 8;
1057 p = output->data[ 0 ] + i * output->linesize[ 0 ];
1058
1059 #ifndef __DARWIN__
1060 p += 3;
1061 #endif
1062
1063 switch( width % 8 )
1064 {
1065 case 0: do { *p = *alpha++; p += 4;
1066 case 7: *p = *alpha++; p += 4;
1067 case 6: *p = *alpha++; p += 4;
1068 case 5: *p = *alpha++; p += 4;
1069 case 4: *p = *alpha++; p += 4;
1070 case 3: *p = *alpha++; p += 4;
1071 case 2: *p = *alpha++; p += 4;
1072 case 1: *p = *alpha++; p += 4;
1073 }
1074 while( --n );
1075 }
1076 }
1077 }
1078 }
1079
1080 if (oc->oformat->flags & AVFMT_RAWPICTURE)
1081 {
1082 // raw video case. The API will change slightly in the near future for that
1083 AVPacket pkt;
1084 av_init_packet(&pkt);
1085
1086 pkt.flags |= PKT_FLAG_KEY;
1087 pkt.stream_index= video_st->index;
1088 pkt.data= (uint8_t *)output;
1089 pkt.size= sizeof(AVPicture);
1090
1091 ret = av_write_frame(oc, &pkt);
1092 video_pts += c->frame_size;
1093 }
1094 else
1095 {
1096 // Set the quality
1097 output->quality = video_st->quality;
1098
1099 // Set frame interlace hints
1100 output->interlaced_frame = !mlt_properties_get_int( frame_properties, "progressive" );
1101 output->top_field_first = mlt_properties_get_int( frame_properties, "top_field_first" );
1102
1103 // Encode the image
1104 out_size = avcodec_encode_video(c, video_outbuf, video_outbuf_size, output );
1105
1106 // If zero size, it means the image was buffered
1107 if (out_size > 0)
1108 {
1109 AVPacket pkt;
1110 av_init_packet( &pkt );
1111
1112 if ( c->coded_frame && c->coded_frame->pts != AV_NOPTS_VALUE )
1113 pkt.pts= av_rescale_q( c->coded_frame->pts, c->time_base, video_st->time_base );
1114 if( c->coded_frame && c->coded_frame->key_frame )
1115 pkt.flags |= PKT_FLAG_KEY;
1116 pkt.stream_index= video_st->index;
1117 pkt.data= video_outbuf;
1118 pkt.size= out_size;
1119
1120 // write the compressed frame in the media file
1121 ret = av_interleaved_write_frame(oc, &pkt);
1122 video_pts += c->frame_size;
1123
1124 // Dual pass logging
1125 if ( mlt_properties_get_data( properties, "_logfile", NULL ) && c->stats_out)
1126 fprintf( mlt_properties_get_data( properties, "_logfile", NULL ), "%s", c->stats_out );
1127 }
1128 else
1129 {
1130 fprintf( stderr, "%s: error with video encode\n", __FILE__ );
1131 }
1132 }
1133 frame_count++;
1134 mlt_frame_close( frame );
1135 }
1136 else
1137 {
1138 break;
1139 }
1140 }
1141 }
1142
1143 if ( real_time_output == 1 && frames % 12 == 0 )
1144 {
1145 long passed = time_difference( &ante );
1146 if ( fifo != NULL )
1147 {
1148 long pending = ( ( ( long )sample_fifo_used( fifo ) * 1000 ) / frequency ) * 1000;
1149 passed -= pending;
1150 }
1151 if ( passed < total_time )
1152 {
1153 long total = ( total_time - passed );
1154 struct timespec t = { total / 1000000, ( total % 1000000 ) * 1000 };
1155 nanosleep( &t, NULL );
1156 }
1157 }
1158 }
1159
1160 #ifdef FLUSH
1161 if ( ! real_time_output )
1162 {
1163 // Flush audio fifo
1164 if ( audio_st && audio_st->codec->frame_size > 1 ) for (;;)
1165 {
1166 AVCodecContext *c = audio_st->codec;
1167 AVPacket pkt;
1168 av_init_packet( &pkt );
1169 pkt.size = 0;
1170
1171 if ( /*( c->capabilities & CODEC_CAP_SMALL_LAST_FRAME ) &&*/
1172 ( channels * audio_input_frame_size < sample_fifo_used( fifo ) ) )
1173 {
1174 sample_fifo_fetch( fifo, buffer, channels * audio_input_frame_size );
1175 pkt.size = avcodec_encode_audio( c, audio_outbuf, audio_outbuf_size, buffer );
1176 }
1177 if ( pkt.size <= 0 )
1178 pkt.size = avcodec_encode_audio( c, audio_outbuf, audio_outbuf_size, NULL );
1179 if ( pkt.size <= 0 )
1180 break;
1181
1182 // Write the compressed frame in the media file
1183 if ( c->coded_frame && c->coded_frame->pts != AV_NOPTS_VALUE )
1184 pkt.pts = av_rescale_q( c->coded_frame->pts, c->time_base, audio_st->time_base );
1185 pkt.flags |= PKT_FLAG_KEY;
1186 pkt.stream_index = audio_st->index;
1187 pkt.data = audio_outbuf;
1188 if ( av_interleaved_write_frame( oc, &pkt ) != 0 )
1189 {
1190 fprintf( stderr, "%s: Error while writing flushed audio frame\n", __FILE__ );
1191 break;
1192 }
1193 }
1194
1195 // Flush video
1196 if ( video_st && !( oc->oformat->flags & AVFMT_RAWPICTURE ) ) for (;;)
1197 {
1198 AVCodecContext *c = video_st->codec;
1199 AVPacket pkt;
1200 av_init_packet( &pkt );
1201
1202 // Encode the image
1203 pkt.size = avcodec_encode_video( c, video_outbuf, video_outbuf_size, NULL );
1204 if ( pkt.size <= 0 )
1205 break;
1206
1207 if ( c->coded_frame && c->coded_frame->pts != AV_NOPTS_VALUE )
1208 pkt.pts= av_rescale_q( c->coded_frame->pts, c->time_base, video_st->time_base );
1209 if( c->coded_frame && c->coded_frame->key_frame )
1210 pkt.flags |= PKT_FLAG_KEY;
1211 pkt.stream_index = video_st->index;
1212 pkt.data = video_outbuf;
1213
1214 // write the compressed frame in the media file
1215 if ( av_interleaved_write_frame( oc, &pkt ) != 0 )
1216 {
1217 fprintf( stderr, "%s: Error while writing flushed video frame\n". __FILE__ );
1218 break;
1219 }
1220 }
1221 }
1222 #endif
1223
1224 // close each codec
1225 if (video_st)
1226 close_video(oc, video_st);
1227 if (audio_st)
1228 close_audio(oc, audio_st);
1229
1230 // Write the trailer, if any
1231 av_write_trailer(oc);
1232
1233 // Free the streams
1234 for(i = 0; i < oc->nb_streams; i++)
1235 av_freep(&oc->streams[i]);
1236
1237 // Close the output file
1238 if (!(fmt->flags & AVFMT_NOFILE))
1239 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(0<<8)+0)
1240 url_fclose(oc->pb);
1241 #else
1242 url_fclose(&oc->pb);
1243 #endif
1244
1245 // Clean up input and output frames
1246 if ( output )
1247 av_free( output->data[0] );
1248 av_free( output );
1249 av_free( input->data[0] );
1250 av_free( input );
1251 av_free( video_outbuf );
1252 av_free( buffer );
1253
1254 // Free the stream
1255 av_free(oc);
1256
1257 // Just in case we terminated on pause
1258 mlt_properties_set_int( properties, "running", 0 );
1259
1260 mlt_consumer_stopped( this );
1261
1262 return NULL;
1263 }
1264
1265 /** Close the consumer.
1266 */
1267
1268 static void consumer_close( mlt_consumer this )
1269 {
1270 // Stop the consumer
1271 mlt_consumer_stop( this );
1272
1273 // Close the parent
1274 mlt_consumer_close( this );
1275
1276 // Free the memory
1277 free( this );
1278 }
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