2 * consumer_avformat.c -- an encoder based on avformat
3 * Copyright (C) 2003-2004 Ushodaya Enterprises Limited
4 * Author: Charles Yates <charles.yates@pandora.be>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software Foundation,
18 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
22 #include "consumer_avformat.h"
25 #include <framework/mlt_frame.h>
27 // System header files
35 // avformat header files
36 #include <ffmpeg/avformat.h>
44 *sample_fifo
, sample_fifo_s
;
46 sample_fifo
sample_fifo_init( )
48 return calloc( 1, sizeof( sample_fifo_s
) );
51 void sample_fifo_append( sample_fifo
this, int16_t *samples
, int count
)
53 if ( ( this->size
- this->used
) < count
)
55 this->size
+= count
* 5;
56 this->buffer
= realloc( this->buffer
, this->size
* sizeof( int16_t ) );
59 memcpy( &this->buffer
[ this->used
], samples
, count
* sizeof( int16_t ) );
63 int sample_fifo_used( sample_fifo
this )
68 int sample_fifo_fetch( sample_fifo
this, int16_t *samples
, int count
)
70 if ( count
> this->used
)
73 memcpy( samples
, this->buffer
, count
* sizeof( int16_t ) );
75 memmove( this->buffer
, &this->buffer
[ count
], this->used
* sizeof( int16_t ) );
80 void sample_fifo_close( sample_fifo
this )
86 // Forward references.
87 static int consumer_start( mlt_consumer
this );
88 static int consumer_stop( mlt_consumer
this );
89 static int consumer_is_stopped( mlt_consumer
this );
90 static void *consumer_thread( void *arg
);
91 static void consumer_close( mlt_consumer
this );
93 /** Initialise the dv consumer.
96 mlt_consumer
consumer_avformat_init( char *arg
)
98 // Allocate the consumer
99 mlt_consumer
this = calloc( 1, sizeof( struct mlt_consumer_s
) );
101 // If memory allocated and initialises without error
102 if ( this != NULL
&& mlt_consumer_init( this, NULL
) == 0 )
104 // Get properties from the consumer
105 mlt_properties properties
= mlt_consumer_properties( this );
107 // Assign close callback
108 this->close
= consumer_close
;
110 // Interpret the argument
112 mlt_properties_set( properties
, "target", arg
);
114 // sample and frame queue
115 mlt_properties_set_data( properties
, "sample_fifo", sample_fifo_init( ), 0, ( mlt_destructor
)sample_fifo_close
, NULL
);
116 mlt_properties_set_data( properties
, "frame_queue", mlt_deque_init( ), 0, ( mlt_destructor
)mlt_deque_close
, NULL
);
118 // Set avformat defaults
119 mlt_properties_set_int( properties
, "audio_bit_rate", 128000 );
120 mlt_properties_set_int( properties
, "video_bit_rate", 200 * 1000 );
121 mlt_properties_set_int( properties
, "video_bit_rate_tolerance", 4000 * 1000 );
122 mlt_properties_set_int( properties
, "frame_rate_base", 1 );
123 mlt_properties_set_int( properties
, "gop_size", 12 );
124 mlt_properties_set_int( properties
, "max_b_frames", 0 );
125 mlt_properties_set_int( properties
, "mb_decision", 0 );
126 mlt_properties_set_double( properties
, "qscale", 0 );
127 mlt_properties_set_int( properties
, "me_method", ME_EPZS
);
129 // Ensure termination at end of the stream
130 mlt_properties_set_int( properties
, "terminate_on_pause", 1 );
132 // Set up start/stop/terminated callbacks
133 this->start
= consumer_start
;
134 this->stop
= consumer_stop
;
135 this->is_stopped
= consumer_is_stopped
;
139 // Clean up in case of init failure
148 /** Start the consumer.
151 static int consumer_start( mlt_consumer
this )
153 // Get the properties
154 mlt_properties properties
= mlt_consumer_properties( this );
156 // Check that we're not already running
157 if ( !mlt_properties_get_int( properties
, "running" ) )
160 pthread_t
*thread
= calloc( 1, sizeof( pthread_t
) );
161 pthread_attr_t thread_attributes
;
163 // Get the width and height
164 int width
= mlt_properties_get_int( properties
, "width" );
165 int height
= mlt_properties_get_int( properties
, "height" );
167 // Obtain the size property
168 char *size
= mlt_properties_get( properties
, "size" );
174 if ( sscanf( size
, "%dx%d", &tw
, &th
) == 2 && tw
> 0 && th
> 0 )
181 fprintf( stderr
, "consumer_avformat: Invalid size property %s - ignoring.\n", size
);
185 // Now ensure we honour the multiple of two requested by libavformat
186 mlt_properties_set_int( properties
, "width", ( width
/ 2 ) * 2 );
187 mlt_properties_set_int( properties
, "height", ( height
/ 2 ) * 2 );
189 // Assign the thread to properties
190 mlt_properties_set_data( properties
, "thread", thread
, sizeof( pthread_t
), free
, NULL
);
192 // Set the running state
193 mlt_properties_set_int( properties
, "running", 1 );
195 // Inherit the scheduling priority
196 pthread_attr_init( &thread_attributes
);
197 pthread_attr_setinheritsched( &thread_attributes
, PTHREAD_INHERIT_SCHED
);
200 pthread_create( thread
, &thread_attributes
, consumer_thread
, this );
205 /** Stop the consumer.
208 static int consumer_stop( mlt_consumer
this )
210 // Get the properties
211 mlt_properties properties
= mlt_consumer_properties( this );
213 // Check that we're running
214 if ( mlt_properties_get_int( properties
, "running" ) )
217 pthread_t
*thread
= mlt_properties_get_data( properties
, "thread", NULL
);
220 mlt_properties_set_int( properties
, "running", 0 );
222 // Wait for termination
223 pthread_join( *thread
, NULL
);
229 /** Determine if the consumer is stopped.
232 static int consumer_is_stopped( mlt_consumer
this )
234 // Get the properties
235 mlt_properties properties
= mlt_consumer_properties( this );
236 return !mlt_properties_get_int( properties
, "running" );
239 /** Add an audio output stream
242 static AVStream
*add_audio_stream( mlt_consumer
this, AVFormatContext
*oc
, int codec_id
)
244 // Get the properties
245 mlt_properties properties
= mlt_consumer_properties( this );
247 // Create a new stream
248 AVStream
*st
= av_new_stream( oc
, 1 );
250 // If created, then initialise from properties
253 AVCodecContext
*c
= &st
->codec
;
254 c
->codec_id
= codec_id
;
255 c
->codec_type
= CODEC_TYPE_AUDIO
;
257 // Put sample parameters
258 c
->bit_rate
= mlt_properties_get_int( properties
, "audio_bit_rate" );
259 c
->sample_rate
= mlt_properties_get_int( properties
, "frequency" );
260 c
->channels
= mlt_properties_get_int( properties
, "channels" );
264 fprintf( stderr
, "Could not allocate a stream for audio\n" );
270 static int open_audio( AVFormatContext
*oc
, AVStream
*st
, int audio_outbuf_size
)
272 // We will return the audio input size from here
273 int audio_input_frame_size
= 0;
276 AVCodecContext
*c
= &st
->codec
;
279 AVCodec
*codec
= avcodec_find_encoder( c
->codec_id
);
281 // Continue if codec found and we can open it
282 if ( codec
!= NULL
&& avcodec_open(c
, codec
) >= 0 )
284 // ugly hack for PCM codecs (will be removed ASAP with new PCM
285 // support to compute the input frame size in samples
286 if ( c
->frame_size
<= 1 )
288 audio_input_frame_size
= audio_outbuf_size
/ c
->channels
;
289 switch(st
->codec
.codec_id
)
291 case CODEC_ID_PCM_S16LE
:
292 case CODEC_ID_PCM_S16BE
:
293 case CODEC_ID_PCM_U16LE
:
294 case CODEC_ID_PCM_U16BE
:
295 audio_input_frame_size
>>= 1;
303 audio_input_frame_size
= c
->frame_size
;
306 // Some formats want stream headers to be seperate (hmm)
307 if( !strcmp( oc
->oformat
->name
, "mp4" ) ||
308 !strcmp( oc
->oformat
->name
, "mov" ) ||
309 !strcmp( oc
->oformat
->name
, "3gp" ) )
310 c
->flags
|= CODEC_FLAG_GLOBAL_HEADER
;
314 fprintf( stderr
, "Unable to encode audio - disabling audio output.\n" );
317 return audio_input_frame_size
;
320 static void close_audio( AVFormatContext
*oc
, AVStream
*st
)
322 avcodec_close( &st
->codec
);
325 /** Add a video output stream
328 static AVStream
*add_video_stream( mlt_consumer
this, AVFormatContext
*oc
, int codec_id
)
330 // Get the properties
331 mlt_properties properties
= mlt_consumer_properties( this );
333 // Create a new stream
334 AVStream
*st
= av_new_stream( oc
, 0 );
338 AVCodecContext
*c
= &st
->codec
;
339 c
->codec_id
= codec_id
;
340 c
->codec_type
= CODEC_TYPE_VIDEO
;
342 // put sample parameters
343 c
->bit_rate
= mlt_properties_get_int( properties
, "video_bit_rate" );
344 c
->bit_rate_tolerance
= mlt_properties_get_int( properties
, "video_bit_rate_tolerance" );
345 c
->width
= mlt_properties_get_int( properties
, "width" );
346 c
->height
= mlt_properties_get_int( properties
, "height" );
347 c
->frame_rate
= mlt_properties_get_double( properties
, "fps" );
348 c
->frame_rate_base
= mlt_properties_get_double( properties
, "frame_rate_base" );
349 c
->frame_rate_base
= 1;
350 c
->gop_size
= mlt_properties_get_int( properties
, "gop_size" );
351 c
->max_b_frames
= mlt_properties_get_int( properties
, "max_b_frames" );
352 if ( c
->max_b_frames
)
354 c
->b_frame_strategy
= 0;
355 c
->b_quant_factor
= 2.0;
358 c
->mb_decision
= mlt_properties_get_int( properties
, "mb_decision" );
359 c
->sample_aspect_ratio
= av_d2q( mlt_properties_get_double( properties
, "aspect_ratio" ), 255 );
362 if ( mlt_properties_get_double( properties
, "qscale" ) > 0 )
364 c
->flags
|= CODEC_FLAG_QSCALE
;
365 st
->quality
= FF_QP2LAMBDA
* mlt_properties_get_double( properties
, "qscale" );
368 // Some formats want stream headers to be seperate (hmm)
369 if( !strcmp( oc
->oformat
->name
, "mp4" ) ||
370 !strcmp( oc
->oformat
->name
, "mov" ) ||
371 !strcmp( oc
->oformat
->name
, "3gp" ) )
372 c
->flags
|= CODEC_FLAG_GLOBAL_HEADER
;
374 c
->me_method
= mlt_properties_get_int( properties
, "me_method" );
378 fprintf( stderr
, "Could not allocate a stream for video\n" );
384 static AVFrame
*alloc_picture( int pix_fmt
, int width
, int height
)
387 AVFrame
*picture
= avcodec_alloc_frame();
389 // Determine size of the
390 int size
= avpicture_get_size(pix_fmt
, width
, height
);
392 // Allocate the picture buf
393 uint8_t *picture_buf
= av_malloc(size
);
395 // If we have both, then fill the image
396 if ( picture
!= NULL
&& picture_buf
!= NULL
)
398 // Fill the frame with the allocated buffer
399 avpicture_fill( (AVPicture
*)picture
, picture_buf
, pix_fmt
, width
, height
);
403 // Something failed - clean up what we can
405 av_free( picture_buf
);
412 static int open_video(AVFormatContext
*oc
, AVStream
*st
)
415 AVCodecContext
*c
= &st
->codec
;
417 // find the video encoder
418 AVCodec
*codec
= avcodec_find_encoder(c
->codec_id
);
420 // Open the codec safely
421 return codec
!= NULL
&& avcodec_open(c
, codec
) >= 0;
424 void close_video(AVFormatContext
*oc
, AVStream
*st
)
426 avcodec_close(&st
->codec
);
429 /** The main thread - the argument is simply the consumer.
432 static void *consumer_thread( void *arg
)
434 // Map the argument to the object
435 mlt_consumer
this = arg
;
437 // Get the properties
438 mlt_properties properties
= mlt_consumer_properties( this );
440 // Get the terminate on pause property
441 int terminate_on_pause
= mlt_properties_get_int( properties
, "terminate_on_pause" );
443 // Get the frame rate
444 int fps
= mlt_properties_get_double( properties
, "fps" );
446 // Get width and height
447 int width
= mlt_properties_get_int( properties
, "width" );
448 int height
= mlt_properties_get_int( properties
, "height" );
449 int img_width
= width
;
450 int img_height
= height
;
452 // Get default audio properties
453 mlt_audio_format aud_fmt
= mlt_audio_pcm
;
454 int channels
= mlt_properties_get_int( properties
, "channels" );
455 int frequency
= mlt_properties_get_int( properties
, "frequency" );
459 // AVFormat audio buffer and frame size
460 int audio_outbuf_size
= 2 * 128 * 1024;
461 uint8_t *audio_outbuf
= av_malloc( audio_outbuf_size
);
462 int audio_input_frame_size
= 0;
464 // AVFormat video buffer and frame count
466 int video_outbuf_size
= ( 1024 * 1024 );
467 uint8_t *video_outbuf
= av_malloc( video_outbuf_size
);
469 // Used for the frame properties
470 mlt_frame frame
= NULL
;
471 mlt_properties frame_properties
= NULL
;
474 mlt_deque queue
= mlt_properties_get_data( properties
, "frame_queue", NULL
);
475 sample_fifo fifo
= mlt_properties_get_data( properties
, "sample_fifo", NULL
);
477 // Need two av pictures for converting
478 AVFrame
*output
= alloc_picture( PIX_FMT_YUV420P
, width
, height
);
479 AVFrame
*input
= alloc_picture( PIX_FMT_YUV422
, width
, height
);
481 // For receiving images from an mlt_frame
483 mlt_image_format img_fmt
= mlt_image_yuv422
;
485 // Fo receiving audio samples back from the fifo
486 int16_t buffer
[ 48000 * 2 ];
489 // Allocate the context
490 AVFormatContext
*oc
= av_alloc_format_context( );
493 AVStream
*audio_st
= NULL
;
494 AVStream
*video_st
= NULL
;
497 double audio_pts
, video_pts
;
502 // Determine the format
503 AVOutputFormat
*fmt
= NULL
;
504 char *filename
= mlt_properties_get( properties
, "target" );
505 char *format
= mlt_properties_get( properties
, "format" );
506 char *vcodec
= mlt_properties_get( properties
, "vcodec" );
507 char *acodec
= mlt_properties_get( properties
, "acodec" );
509 // Used to store and override codec ids
513 // Check for user selected format first
514 if ( format
!= NULL
)
515 fmt
= guess_format( format
, NULL
, NULL
);
517 // Otherwise check on the filename
518 if ( fmt
== NULL
&& filename
!= NULL
)
519 fmt
= guess_format( NULL
, filename
, NULL
);
521 // Otherwise default to mpeg
523 fmt
= guess_format( "mpeg", NULL
, NULL
);
525 // We need a filename - default to stdout?
526 if ( filename
== NULL
)
529 // Get the codec ids selected
530 audio_codec_id
= fmt
->audio_codec
;
531 video_codec_id
= fmt
->video_codec
;
533 // Check for audio codec overides
534 if ( acodec
!= NULL
)
536 AVCodec
*p
= first_avcodec
;
539 if ( !strcmp( p
->name
, acodec
) && p
->type
== CODEC_TYPE_AUDIO
)
544 audio_codec_id
= p
->id
;
546 fprintf( stderr
, "consumer_avcodec: audio codec %s unrecognised - ignoring\n", acodec
);
549 // Check for video codec overides
550 if ( vcodec
!= NULL
)
552 AVCodec
*p
= first_avcodec
;
555 if ( !strcmp( p
->name
, vcodec
) && p
->type
== CODEC_TYPE_VIDEO
)
560 video_codec_id
= p
->id
;
562 fprintf( stderr
, "consumer_avcodec: video codec %s unrecognised - ignoring\n", vcodec
);
565 // Update the output context
567 snprintf( oc
->filename
, sizeof(oc
->filename
), "%s", filename
);
569 // Add audio and video streams
570 if ( fmt
->video_codec
!= CODEC_ID_NONE
)
571 video_st
= add_video_stream( this, oc
, video_codec_id
);
572 if ( fmt
->audio_codec
!= CODEC_ID_NONE
)
573 audio_st
= add_audio_stream( this, oc
, audio_codec_id
);
575 // Set the parameters (even though we have none...)
576 if ( av_set_parameters(oc
, NULL
) >= 0 )
578 if ( video_st
&& !open_video( oc
, video_st
) )
581 audio_input_frame_size
= open_audio( oc
, audio_st
, audio_outbuf_size
);
583 // Open the output file, if needed
584 if ( !( fmt
->flags
& AVFMT_NOFILE
) )
586 if (url_fopen(&oc
->pb
, filename
, URL_RDWR
) < 0)
588 fprintf(stderr
, "Could not open '%s'\n", filename
);
589 mlt_properties_set_int( properties
, "running", 0 );
593 if ( url_is_streamed( &oc
->pb
) )
594 fprintf( stderr
, "FUCK!\n" );
596 // Write the stream header, if any
597 if ( mlt_properties_get_int( properties
, "running" ) )
598 av_write_header( oc
);
602 fprintf(stderr
, "Invalid output format parameters\n");
603 mlt_properties_set_int( properties
, "running", 0 );
606 // Last check - need at least one stream
607 if ( audio_st
== NULL
&& video_st
== NULL
)
608 mlt_properties_set_int( properties
, "running", 0 );
610 // Loop while running
611 while( mlt_properties_get_int( properties
, "running" ) )
614 frame
= mlt_consumer_rt_frame( this );
616 // Check that we have a frame to work with
619 // Default audio args
620 frame_properties
= mlt_frame_properties( frame
);
622 // Get audio and append to the fifo
625 samples
= mlt_sample_calculator( fps
, frequency
, count
);
626 mlt_frame_get_audio( frame
, &pcm
, &aud_fmt
, &frequency
, &channels
, &samples
);
627 sample_fifo_append( fifo
, pcm
, samples
* channels
);
632 mlt_deque_push_back( queue
, frame
);
634 mlt_frame_close( frame
);
636 // While we have stuff to process, process...
639 // Compute current audio and video time
641 audio_pts
= (double)audio_st
->pts
.val
* oc
->pts_num
/ oc
->pts_den
;
646 video_pts
= (double)video_st
->pts
.val
* oc
->pts_num
/ oc
->pts_den
;
650 // Write interleaved audio and video frames
651 if ( !video_st
|| ( video_st
&& audio_st
&& audio_pts
< video_pts
) )
653 if ( channels
* audio_input_frame_size
< sample_fifo_used( fifo
) )
658 c
= &audio_st
->codec
;
660 sample_fifo_fetch( fifo
, buffer
, channels
* audio_input_frame_size
);
662 out_size
= avcodec_encode_audio( c
, audio_outbuf
, audio_outbuf_size
, buffer
);
664 // Write the compressed frame in the media file
665 if (av_write_frame(oc
, audio_st
->index
, audio_outbuf
, out_size
) != 0)
666 fprintf(stderr
, "Error while writing audio frame\n");
675 if ( mlt_deque_count( queue
) )
680 frame
= mlt_deque_pop_front( queue
);
681 frame_properties
= mlt_frame_properties( frame
);
683 if ( terminate_on_pause
&& mlt_properties_get_double( frame_properties
, "_speed" ) == 0.0 )
685 mlt_properties_set_int( properties
, "running", 0 );
689 c
= &video_st
->codec
;
691 if ( mlt_properties_get_int( frame_properties
, "rendered" ) )
698 mlt_frame_get_image( frame
, &image
, &img_fmt
, &img_width
, &img_height
, 0 );
702 for ( i
= 0; i
< height
; i
++ )
704 p
= input
->data
[ 0 ] + i
* input
->linesize
[ 0 ];
713 img_convert( ( AVPicture
* )output
, PIX_FMT_YUV420P
, ( AVPicture
* )input
, PIX_FMT_YUV422
, width
, height
);
716 if (oc
->oformat
->flags
& AVFMT_RAWPICTURE
)
718 // raw video case. The API will change slightly in the near future for that
719 ret
= av_write_frame(oc
, video_st
->index
, (uint8_t *)output
, sizeof(AVPicture
));
724 out_size
= avcodec_encode_video(c
, video_outbuf
, video_outbuf_size
, output
);
726 // If zero size, it means the image was buffered
729 // write the compressed frame in the media file
730 // XXX: in case of B frames, the pts is not yet valid
731 ret
= av_write_frame( oc
, video_st
->index
, video_outbuf
, out_size
);
735 mlt_frame_close( frame
);
748 close_video(oc
, video_st
);
750 close_audio(oc
, audio_st
);
752 // Write the trailer, if any
753 av_write_trailer(oc
);
756 for(i
= 0; i
< oc
->nb_streams
; i
++)
757 av_freep(&oc
->streams
[i
]);
759 // Close the output file
760 if (!(fmt
->flags
& AVFMT_NOFILE
))
763 // Clean up input and output frames
764 av_free( output
->data
[0] );
766 av_free( input
->data
[0] );
768 av_free( video_outbuf
);
776 /** Close the consumer.
779 static void consumer_close( mlt_consumer
this )
782 mlt_consumer_stop( this );
785 mlt_consumer_close( this );