2 * producer_avformat.c -- avformat producer
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 "producer_avformat.h"
25 #include <framework/mlt_frame.h>
27 // ffmpeg Header files
28 #include <ffmpeg/avformat.h>
30 // System header files
36 // Forward references.
37 static int producer_open( mlt_producer
this, char *file
);
38 static int producer_get_frame( mlt_producer
this, mlt_frame_ptr frame
, int index
);
40 // A static flag used to determine if avformat has been initialised
41 static int avformat_initialised
= 0;
42 static pthread_mutex_t avformat_mutex
;
44 void *av_malloc( unsigned int size
)
46 return mlt_pool_alloc( size
);
49 void *av_realloc( void *ptr
, unsigned int size
)
51 return mlt_pool_realloc( ptr
, size
);
54 void av_free( void *ptr
)
56 return mlt_pool_release( ptr
);
59 /** Constructor for libavformat.
62 mlt_producer
producer_avformat_init( char *file
)
64 mlt_producer
this = NULL
;
66 // Check that we have a non-NULL argument
69 // Construct the producer
70 this = calloc( 1, sizeof( struct mlt_producer_s
) );
73 if ( mlt_producer_init( this, NULL
) == 0 )
76 mlt_properties properties
= mlt_producer_properties( this );
78 // Set the resource property (required for all producers)
79 mlt_properties_set( properties
, "resource", file
);
81 // TEST: audio sync tweaking
82 mlt_properties_set_double( properties
, "discrepancy", 1 );
84 // Register our get_frame implementation
85 this->get_frame
= producer_get_frame
;
87 // Initialise avformat if necessary
88 if ( avformat_initialised
== 0 )
90 avformat_initialised
= 1;
91 pthread_mutex_init( &avformat_mutex
, NULL
);
96 if ( producer_open( this, file
) != 0 )
99 mlt_producer_close( this );
108 /** Find the default streams.
111 static void find_default_streams( AVFormatContext
*context
, int *audio_index
, int *video_index
)
115 // Allow for multiple audio and video streams in the file and select first of each (if available)
116 for( i
= 0; i
< context
->nb_streams
; i
++ )
118 // Get the codec context
119 AVCodecContext
*codec_context
= &context
->streams
[ i
]->codec
;
121 // Determine the type and obtain the first index of each type
122 switch( codec_context
->codec_type
)
124 case CODEC_TYPE_VIDEO
:
125 if ( *video_index
< 0 )
128 case CODEC_TYPE_AUDIO
:
129 if ( *audio_index
< 0 )
138 /** Producer file destructor.
141 static void producer_file_close( void *context
)
143 if ( context
!= NULL
)
145 // Lock the mutex now
146 pthread_mutex_lock( &avformat_mutex
);
149 av_close_input_file( context
);
151 // Unlock the mutex now
152 pthread_mutex_unlock( &avformat_mutex
);
156 /** Producer file destructor.
159 static void producer_codec_close( void *codec
)
163 // Lock the mutex now
164 pthread_mutex_lock( &avformat_mutex
);
167 avcodec_close( codec
);
169 // Unlock the mutex now
170 pthread_mutex_unlock( &avformat_mutex
);
177 static int producer_open( mlt_producer
this, char *file
)
179 // Return an error code (0 == no error)
182 // Context for avformat
183 AVFormatContext
*context
= NULL
;
185 // Get the properties
186 mlt_properties properties
= mlt_producer_properties( this );
188 // We will treat everything with the producer fps
189 double fps
= mlt_properties_get_double( properties
, "fps" );
191 // Lock the mutex now
192 pthread_mutex_lock( &avformat_mutex
);
194 // Now attempt to open the file
195 error
= av_open_input_file( &context
, file
, NULL
, 0, NULL
);
198 // If successful, then try to get additional info
201 // Get the stream info
202 error
= av_find_stream_info( context
) < 0;
204 // Continue if no error
207 // We will default to the first audio and video streams found
208 int audio_index
= -1;
209 int video_index
= -1;
211 // Now set properties where we can (use default unknowns if required)
212 if ( context
->duration
!= AV_NOPTS_VALUE
)
214 // This isn't going to be accurate for all formats
215 mlt_position frames
= ( mlt_position
)( ( ( double )context
->duration
/ ( double )AV_TIME_BASE
) * fps
);
216 mlt_properties_set_position( properties
, "out", frames
- 2 );
217 mlt_properties_set_position( properties
, "length", frames
- 1 );
220 // Find default audio and video streams
221 find_default_streams( context
, &audio_index
, &video_index
);
223 // Store selected audio and video indexes on properties
224 mlt_properties_set_int( properties
, "audio_index", audio_index
);
225 mlt_properties_set_int( properties
, "video_index", video_index
);
227 // We're going to cheat here - for a/v files, we will have two contexts (reasoning will be clear later)
228 if ( audio_index
!= -1 && video_index
!= -1 )
230 // We'll use the open one as our video_context
231 mlt_properties_set_data( properties
, "video_context", context
, 0, producer_file_close
, NULL
);
233 // And open again for our audio context
234 av_open_input_file( &context
, file
, NULL
, 0, NULL
);
235 av_find_stream_info( context
);
238 mlt_properties_set_data( properties
, "audio_context", context
, 0, producer_file_close
, NULL
);
240 else if ( video_index
!= -1 )
242 // We only have a video context
243 mlt_properties_set_data( properties
, "video_context", context
, 0, producer_file_close
, NULL
);
245 else if ( audio_index
!= -1 )
247 // We only have an audio context
248 mlt_properties_set_data( properties
, "audio_context", context
, 0, producer_file_close
, NULL
);
252 // Something has gone wrong
258 // Unlock the mutex now
259 pthread_mutex_unlock( &avformat_mutex
);
264 /** Convert a frame position to a time code.
267 static double producer_time_of_frame( mlt_producer
this, mlt_position position
)
269 // Get the properties
270 mlt_properties properties
= mlt_producer_properties( this );
273 double fps
= mlt_properties_get_double( properties
, "fps" );
276 return ( double )position
/ fps
;
279 /** Get an image from a frame.
282 static int producer_get_image( mlt_frame frame
, uint8_t **buffer
, mlt_image_format
*format
, int *width
, int *height
, int writable
)
284 // Get the properties from the frame
285 mlt_properties frame_properties
= mlt_frame_properties( frame
);
287 // Obtain the frame number of this frame
288 mlt_position position
= mlt_properties_get_position( frame_properties
, "avformat_position" );
291 mlt_producer
this = mlt_properties_get_data( frame_properties
, "avformat_producer", NULL
);
293 // Get the producer properties
294 mlt_properties properties
= mlt_producer_properties( this );
296 // Fetch the video_context
297 AVFormatContext
*context
= mlt_properties_get_data( properties
, "video_context", NULL
);
299 // Get the video_index
300 int index
= mlt_properties_get_int( properties
, "video_index" );
302 // Obtain the expected frame numer
303 mlt_position expected
= mlt_properties_get_position( properties
, "video_expected" );
305 // Calculate the real time code
306 double real_timecode
= producer_time_of_frame( this, position
);
308 // Get the video stream
309 AVStream
*stream
= context
->streams
[ index
];
312 AVCodecContext
*codec_context
= &stream
->codec
;
317 // Get the conversion frame
318 AVPicture
*output
= mlt_properties_get_data( properties
, "video_output_frame", NULL
);
320 // Special case pause handling flag
323 // Special case ffwd handling
326 // Current time calcs
327 double current_time
= mlt_properties_get_double( properties
, "current_time" );
329 // We may want to use the source fps if available
330 double source_fps
= mlt_properties_get_double( properties
, "source_fps" );
332 // Set the result arguments that we know here (only *buffer is now required)
333 *format
= mlt_image_yuv422
;
334 *width
= codec_context
->width
;
335 *height
= codec_context
->height
;
337 // Set this on the frame properties
338 mlt_properties_set_int( frame_properties
, "width", *width
);
339 mlt_properties_set_int( frame_properties
, "height", *height
);
341 // Lock the mutex now
342 pthread_mutex_lock( &avformat_mutex
);
344 // Construct an AVFrame for YUV422 conversion
345 if ( output
== NULL
)
347 int size
= avpicture_get_size( PIX_FMT_YUV422
, *width
, *height
);
349 uint8_t *buf
= mlt_pool_alloc( size
);
350 output
= mlt_pool_alloc( sizeof( AVPicture
) );
351 //memset( output, 0, sizeof( AVPicture ) );
352 avpicture_fill( output
, buf
, PIX_FMT_YUV422
, *width
, *height
);
353 mlt_properties_set_data( properties
, "video_output_frame", output
, 0, ( mlt_destructor
)mlt_pool_release
, NULL
);
354 mlt_properties_set_data( properties
, "video_output_buffer", buf
, 0, ( mlt_destructor
)mlt_pool_release
, NULL
);
358 if ( position
!= expected
)
360 if ( position
+ 1 == expected
)
362 // We're paused - use last image
365 else if ( position
> expected
&& ( position
- expected
) < 250 )
367 // Fast forward - seeking is inefficient for small distances - just ignore following frames
368 ignore
= position
- expected
;
372 // Set to the real timecode
373 av_seek_frame( context
, -1, real_timecode
* 1000000.0 );
375 // Remove the cached info relating to the previous position
376 mlt_properties_set_double( properties
, "current_time", real_timecode
);
377 mlt_properties_set_data( properties
, "current_image", NULL
, 0, NULL
, NULL
);
381 // Duplicate the last image if necessary
382 if ( mlt_properties_get_data( properties
, "current_image", NULL
) != NULL
&&
383 ( paused
|| mlt_properties_get_double( properties
, "current_time" ) >= real_timecode
) )
385 // Get current image and size
387 uint8_t *image
= mlt_properties_get_data( properties
, "current_image", &size
);
390 *buffer
= mlt_pool_alloc( size
);
391 memcpy( *buffer
, image
, size
);
393 // Set this on the frame properties
394 mlt_properties_set_data( frame_properties
, "image", *buffer
, size
, ( mlt_destructor
)mlt_pool_release
, NULL
);
402 memset( &pkt
, 0, sizeof( pkt
) );
403 memset( &frame
, 0, sizeof( frame
) );
405 while( ret
>= 0 && !got_picture
)
408 ret
= av_read_frame( context
, &pkt
);
410 // We only deal with video from the selected video_index
411 if ( ret
>= 0 && pkt
.stream_index
== index
&& pkt
.size
> 0 )
414 ret
= avcodec_decode_video( codec_context
, &frame
, &got_picture
, pkt
.data
, pkt
.size
);
418 if ( pkt
.pts
!= AV_NOPTS_VALUE
&& pkt
.pts
!= 0 )
419 current_time
= ( double )pkt
.pts
/ 1000000.0;
421 current_time
= real_timecode
;
424 if ( current_time
< real_timecode
)
429 else if ( current_time
>= real_timecode
)
431 //current_time = real_timecode;
434 else if ( ignore
-- )
441 // We're finished with this packet regardless
442 av_free_packet( &pkt
);
445 // Now handle the picture if we have one
448 // Get current image and size
450 uint8_t *image
= mlt_properties_get_data( properties
, "current_image", &size
);
452 if ( image
== NULL
|| size
!= *width
* *height
* 2 )
454 size
= *width
* ( *height
+ 1 ) * 2;
455 image
= mlt_pool_alloc( size
);
456 mlt_properties_set_data( properties
, "current_image", image
, size
, ( mlt_destructor
)mlt_pool_release
, NULL
);
459 *buffer
= mlt_pool_alloc( size
);
461 // EXPERIMENTAL IMAGE NORMALISATIONS
462 if ( codec_context
->pix_fmt
== PIX_FMT_YUV420P
)
465 register int half
= *width
>> 1;
466 register uint8_t *Y
= ( ( AVPicture
* )&frame
)->data
[ 0 ];
467 register uint8_t *U
= ( ( AVPicture
* )&frame
)->data
[ 1 ];
468 register uint8_t *V
= ( ( AVPicture
* )&frame
)->data
[ 2 ];
469 register uint8_t *d
= *buffer
;
470 register uint8_t *y
, *u
, *v
;
487 Y
+= ( ( AVPicture
* )&frame
)->linesize
[ 0 ];
500 Y
+= ( ( AVPicture
* )&frame
)->linesize
[ 0 ];
501 U
+= ( ( AVPicture
* )&frame
)->linesize
[ 1 ];
502 V
+= ( ( AVPicture
* )&frame
)->linesize
[ 2 ];
507 img_convert( output
, PIX_FMT_YUV422
, (AVPicture
*)&frame
, codec_context
->pix_fmt
, *width
, *height
);
508 memcpy( *buffer
, output
->data
[ 0 ], size
);
511 memcpy( image
, *buffer
, size
);
512 mlt_properties_set_data( frame_properties
, "image", *buffer
, size
, ( mlt_destructor
)mlt_pool_release
, NULL
);
514 if ( current_time
== 0 && source_fps
!= 0 )
516 double fps
= mlt_properties_get_double( properties
, "fps" );
517 current_time
= ceil( source_fps
* ( double )position
/ fps
) * ( 1 / source_fps
);
518 mlt_properties_set_double( properties
, "current_time", current_time
);
522 mlt_properties_set_double( properties
, "current_time", current_time
);
527 // Regardless of speed, we expect to get the next frame (cos we ain't too bright)
528 mlt_properties_set_position( properties
, "video_expected", position
+ 1 );
530 // Unlock the mutex now
531 pthread_mutex_unlock( &avformat_mutex
);
536 /** Set up video handling.
539 static void producer_set_up_video( mlt_producer
this, mlt_frame frame
)
541 // Get the properties
542 mlt_properties properties
= mlt_producer_properties( this );
544 // Fetch the video_context
545 AVFormatContext
*context
= mlt_properties_get_data( properties
, "video_context", NULL
);
547 // Get the video_index
548 int index
= mlt_properties_get_int( properties
, "video_index" );
550 // Get the frame properties
551 mlt_properties frame_properties
= mlt_frame_properties( frame
);
553 // Lock the mutex now
554 pthread_mutex_lock( &avformat_mutex
);
556 if ( context
!= NULL
&& index
!= -1 )
558 // Get the video stream
559 AVStream
*stream
= context
->streams
[ index
];
562 AVCodecContext
*codec_context
= &stream
->codec
;
565 AVCodec
*codec
= mlt_properties_get_data( properties
, "video_codec", NULL
);
567 // Initialise the codec if necessary
571 codec
= avcodec_find_decoder( codec_context
->codec_id
);
573 // If we don't have a codec and we can't initialise it, we can't do much more...
574 if ( codec
!= NULL
&& avcodec_open( codec_context
, codec
) >= 0 )
576 // Now store the codec with its destructor
577 mlt_properties_set_data( properties
, "video_codec", codec_context
, 0, producer_codec_close
, NULL
);
581 // Remember that we can't use this later
582 mlt_properties_set_int( properties
, "video_index", -1 );
586 // No codec, no show...
589 double aspect_ratio
= 0;
590 double source_fps
= 0;
593 if ( codec_context
->sample_aspect_ratio
.num
== 0 )
596 aspect_ratio
= av_q2d( codec_context
->sample_aspect_ratio
) * codec_context
->width
/ codec_context
->height
;
598 // XXX: This assumes square pixels!
599 if (aspect_ratio
<= 0.0)
600 aspect_ratio
= ( double )codec_context
->width
/ ( double )codec_context
->height
;
602 mlt_properties_set_double( properties
, "aspect_ratio", aspect_ratio
);
603 //fprintf( stderr, "AVFORMAT: sample aspect %f computed display aspect %f\n", av_q2d( codec_context->sample_aspect_ratio ), aspect_ratio );
606 source_fps
= ( double )codec_context
->frame_rate
/ codec_context
->frame_rate_base
;
608 // We'll use fps if it's available
609 if ( source_fps
> 0 && source_fps
< 30 )
610 mlt_properties_set_double( properties
, "source_fps", source_fps
);
612 mlt_frame_push_get_image( frame
, producer_get_image
);
613 mlt_properties_set_data( frame_properties
, "avformat_producer", this, 0, NULL
, NULL
);
618 mlt_properties_set_int( frame_properties
, "test_image", 1 );
623 mlt_properties_set_int( frame_properties
, "test_image", 1 );
626 // Unlock the mutex now
627 pthread_mutex_unlock( &avformat_mutex
);
630 /** Get the audio from a frame.
633 static int producer_get_audio( mlt_frame frame
, int16_t **buffer
, mlt_audio_format
*format
, int *frequency
, int *channels
, int *samples
)
635 // Get the properties from the frame
636 mlt_properties frame_properties
= mlt_frame_properties( frame
);
638 // Obtain the frame number of this frame
639 mlt_position position
= mlt_properties_get_position( frame_properties
, "avformat_position" );
642 mlt_producer
this = mlt_properties_get_data( frame_properties
, "avformat_producer", NULL
);
644 // Get the producer properties
645 mlt_properties properties
= mlt_producer_properties( this );
647 // Fetch the audio_context
648 AVFormatContext
*context
= mlt_properties_get_data( properties
, "audio_context", NULL
);
650 // Get the audio_index
651 int index
= mlt_properties_get_int( properties
, "audio_index" );
653 // Obtain the expected frame numer
654 mlt_position expected
= mlt_properties_get_position( properties
, "audio_expected" );
656 // Obtain the resample context if it exists (not always needed)
657 ReSampleContext
*resample
= mlt_properties_get_data( properties
, "audio_resample", NULL
);
659 // Obtain the audio buffer
660 int16_t *audio_buffer
= mlt_properties_get_data( properties
, "audio_buffer", NULL
);
662 // Get amount of audio used
663 int audio_used
= mlt_properties_get_int( properties
, "audio_used" );
665 // Calculate the real time code
666 double real_timecode
= producer_time_of_frame( this, position
);
668 // Get the audio stream
669 AVStream
*stream
= context
->streams
[ index
];
672 AVCodecContext
*codec_context
= &stream
->codec
;
677 // Number of frames to ignore (for ffwd)
680 // Flag for paused (silence)
684 // Lock the mutex now
685 pthread_mutex_lock( &avformat_mutex
);
687 // Check for resample and create if necessary
688 if ( resample
== NULL
)
690 // Create the resampler
691 resample
= audio_resample_init( *channels
, codec_context
->channels
, *frequency
, codec_context
->sample_rate
);
693 // And store it on properties
694 mlt_properties_set_data( properties
, "audio_resample", resample
, 0, ( mlt_destructor
)audio_resample_close
, NULL
);
697 // Check for audio buffer and create if necessary
698 if ( audio_buffer
== NULL
)
700 // Allocate the audio buffer
701 audio_buffer
= mlt_pool_alloc( AVCODEC_MAX_AUDIO_FRAME_SIZE
* sizeof( int16_t ) );
703 // And store it on properties for reuse
704 mlt_properties_set_data( properties
, "audio_buffer", audio_buffer
, 0, ( mlt_destructor
)mlt_pool_release
, NULL
);
708 if ( position
!= expected
)
710 if ( position
+ 1 == expected
)
712 // We're paused - silence required
715 else if ( position
> expected
&& ( position
- expected
) < 250 )
717 // Fast forward - seeking is inefficient for small distances - just ignore following frames
718 ignore
= position
- expected
;
722 // Set to the real timecode
723 av_seek_frame( context
, -1, real_timecode
* 1000000.0 );
725 // Clear the usage in the audio buffer
732 // Get the audio if required
737 int16_t *temp
= mlt_pool_alloc( sizeof( int16_t ) * AVCODEC_MAX_AUDIO_FRAME_SIZE
);
739 memset( &pkt
, 0, sizeof( pkt
) );
741 while( ret
>= 0 && !got_audio
)
743 // Check if the buffer already contains the samples required
744 if ( audio_used
>= *samples
&& ignore
== 0 )
751 ret
= av_read_frame( context
, &pkt
);
754 uint8_t *ptr
= pkt
.data
;
757 // We only deal with video from the selected video_index
758 while ( ptr
!= NULL
&& ret
>= 0 && pkt
.stream_index
== index
&& len
> 0 )
761 ret
= avcodec_decode_audio( codec_context
, temp
, &data_size
, ptr
, len
);
774 int size_out
= audio_resample( resample
, &audio_buffer
[ audio_used
* *channels
], temp
, data_size
/ ( codec_context
->channels
* sizeof( int16_t ) ) );
776 audio_used
+= size_out
;
779 while ( ignore
&& audio_used
> *samples
)
782 audio_used
-= *samples
;
783 memmove( audio_buffer
, &audio_buffer
[ *samples
* *channels
], audio_used
* sizeof( int16_t ) );
787 // If we're behind, ignore this packet
788 float current_pts
= (float)pkt
.pts
/ 1000000.0;
789 double discrepancy
= mlt_properties_get_double( properties
, "discrepancy" );
790 if ( current_pts
!= 0 && real_timecode
!= 0 )
792 if ( discrepancy
!= 1 )
793 discrepancy
= ( discrepancy
+ ( real_timecode
/ current_pts
) ) / 2;
795 discrepancy
= real_timecode
/ current_pts
;
796 if ( discrepancy
> 0.9 && discrepancy
< 1.1 )
799 discrepancy
= floor( discrepancy
+ 0.5 );
801 if ( discrepancy
== 0 )
804 mlt_properties_set_double( properties
, "discrepancy", discrepancy
);
807 if ( !ignore
&& discrepancy
* current_pts
<= ( real_timecode
- 0.02 ) )
811 // We're finished with this packet regardless
812 av_free_packet( &pkt
);
815 *buffer
= mlt_pool_alloc( *samples
* *channels
* sizeof( int16_t ) );
816 mlt_properties_set_data( frame_properties
, "audio", *buffer
, 0, ( mlt_destructor
)mlt_pool_release
, NULL
);
818 // Now handle the audio if we have enough
819 if ( audio_used
>= *samples
)
821 memcpy( *buffer
, audio_buffer
, *samples
* *channels
* sizeof( int16_t ) );
822 audio_used
-= *samples
;
823 memmove( audio_buffer
, &audio_buffer
[ *samples
* *channels
], audio_used
* *channels
* sizeof( int16_t ) );
827 memset( *buffer
, 0, *samples
* *channels
* sizeof( int16_t ) );
830 // Store the number of audio samples still available
831 mlt_properties_set_int( properties
, "audio_used", audio_used
);
833 // Release the temporary audio
834 mlt_pool_release( temp
);
838 // Get silence and don't touch the context
839 frame
->get_audio
= NULL
;
840 mlt_frame_get_audio( frame
, buffer
, format
, frequency
, channels
, samples
);
843 // Regardless of speed, we expect to get the next frame (cos we ain't too bright)
844 mlt_properties_set_position( properties
, "audio_expected", position
+ 1 );
846 // Unlock the mutex now
847 pthread_mutex_unlock( &avformat_mutex
);
852 /** Set up audio handling.
855 static void producer_set_up_audio( mlt_producer
this, mlt_frame frame
)
857 // Get the properties
858 mlt_properties properties
= mlt_producer_properties( this );
860 // Fetch the audio_context
861 AVFormatContext
*context
= mlt_properties_get_data( properties
, "audio_context", NULL
);
863 // Get the audio_index
864 int index
= mlt_properties_get_int( properties
, "audio_index" );
866 // Lock the mutex now
867 pthread_mutex_lock( &avformat_mutex
);
869 // Deal with audio context
870 if ( context
!= NULL
&& index
!= -1 )
872 // Get the frame properties
873 mlt_properties frame_properties
= mlt_frame_properties( frame
);
875 // Get the audio stream
876 AVStream
*stream
= context
->streams
[ index
];
879 AVCodecContext
*codec_context
= &stream
->codec
;
882 AVCodec
*codec
= mlt_properties_get_data( properties
, "audio_codec", NULL
);
884 // Initialise the codec if necessary
888 codec
= avcodec_find_decoder( codec_context
->codec_id
);
890 // If we don't have a codec and we can't initialise it, we can't do much more...
891 if ( codec
!= NULL
&& avcodec_open( codec_context
, codec
) >= 0 )
893 // Now store the codec with its destructor
894 mlt_properties_set_data( properties
, "audio_codec", codec_context
, 0, producer_codec_close
, NULL
);
899 // Remember that we can't use this later
900 mlt_properties_set_int( properties
, "audio_index", -1 );
904 // No codec, no show...
907 frame
->get_audio
= producer_get_audio
;
908 mlt_properties_set_data( frame_properties
, "avformat_producer", this, 0, NULL
, NULL
);
912 // Unlock the mutex now
913 pthread_mutex_unlock( &avformat_mutex
);
916 /** Our get frame implementation.
919 static int producer_get_frame( mlt_producer
this, mlt_frame_ptr frame
, int index
)
921 // Create an empty frame
922 *frame
= mlt_frame_init( );
924 // Update timecode on the frame we're creating
925 mlt_frame_set_position( *frame
, mlt_producer_position( this ) );
927 // Set the position of this producer
928 mlt_properties_set_position( mlt_frame_properties( *frame
), "avformat_position", mlt_producer_get_in( this ) + mlt_producer_position( this ) );
931 producer_set_up_video( this, *frame
);
934 producer_set_up_audio( this, *frame
);
936 // Set the aspect_ratio
937 mlt_properties_set_double( mlt_frame_properties( *frame
), "aspect_ratio", mlt_properties_get_double( mlt_producer_properties( this ), "aspect_ratio" ) );
939 // Calculate the next timecode
940 mlt_producer_prepare_next( this );