2 * producer_ffmpeg.c -- simple ffmpeg test case
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.
21 #include "producer_ffmpeg.h"
23 #include <framework/mlt_frame.h>
24 #include <framework/mlt_factory.h>
30 typedef struct producer_ffmpeg_s
*producer_ffmpeg
;
32 struct producer_ffmpeg_s
34 struct mlt_producer_s parent
;
46 static int producer_get_frame( mlt_producer producer
, mlt_frame_ptr frame
, int index
);
47 static void producer_close( mlt_producer parent
);
49 /** Consutruct an ffmpeg producer.
52 mlt_producer
producer_ffmpeg_init( char *file
)
54 producer_ffmpeg
this = calloc( sizeof( struct producer_ffmpeg_s
), 1 );
55 if ( this != NULL
&& mlt_producer_init( &this->parent
, this ) == 0 )
58 mlt_producer producer
= &this->parent
;
60 // Get the properties of the producer
61 mlt_properties properties
= mlt_producer_properties( producer
);
63 // Override get_frame and close methods
64 producer
->get_frame
= producer_get_frame
;
65 producer
->close
= producer_close
;
68 mlt_properties_set( properties
, "mlt_type", "producer_ffmpeg" );
70 if ( file
!= NULL
&& !strcmp( file
, "v4l" ) )
72 mlt_properties_set( properties
, "video_type", "v4l" );
73 mlt_properties_set( properties
, "video_file", "/dev/video0" );
74 mlt_properties_set( properties
, "video_size", "640x480" );
75 mlt_properties_set( properties
, "audio_type", "dsp" );
76 mlt_properties_set( properties
, "audio_file", "/dev/dsp" );
80 mlt_properties_set( properties
, "video_type", "file" );
81 mlt_properties_set( properties
, "video_file", file
);
82 mlt_properties_set( properties
, "video_size", "" );
83 mlt_properties_set( properties
, "audio_type", "file" );
84 mlt_properties_set( properties
, "audio_file", file
);
87 mlt_properties_set_int( properties
, "audio_rate", 48000 );
88 mlt_properties_set_int( properties
, "audio_channels", 2 );
89 mlt_properties_set_int( properties
, "audio_track", 0 );
91 mlt_properties_set( properties
, "log_id", file
);
93 this->buffer
= malloc( 1024 * 1024 * 2 );
101 static int producer_get_image( mlt_frame
this, uint8_t **buffer
, mlt_image_format
*format
, int *width
, int *height
, int writable
)
103 // Get the frames properties
104 mlt_properties properties
= mlt_frame_properties( this );
106 if ( mlt_properties_get_int( properties
, "has_image" ) )
108 // Get width and height
109 *format
= mlt_image_yuv422
;
110 *width
= mlt_properties_get_int( properties
, "width" );
111 *height
= mlt_properties_get_int( properties
, "height" );
113 // Specify format and image
114 *buffer
= mlt_properties_get_data( properties
, "image", NULL
);
118 mlt_frame_get_image( this, buffer
, format
, width
, height
, writable
);
124 FILE *producer_ffmpeg_run_video( producer_ffmpeg
this, mlt_timecode position
)
126 if ( this->video
== NULL
)
129 mlt_producer producer
= &this->parent
;
131 // Get the properties of the producer
132 mlt_properties properties
= mlt_producer_properties( producer
);
134 // Get the video loop property
135 int video_loop
= mlt_properties_get_int( properties
, "video_loop" );
137 if ( !this->open
|| video_loop
)
139 const char *mlt_prefix
= mlt_factory_prefix( );
140 char *video_type
= mlt_properties_get( properties
, "video_type" );
141 char *video_file
= mlt_properties_get( properties
, "video_file" );
142 float video_rate
= mlt_properties_get_double( properties
, "fps" );
143 char *video_size
= mlt_properties_get( properties
, "video_size" );
144 char command
[ 1024 ] = "";
146 sprintf( command
, "%s/ffmpeg/video.sh \"%s\" \"%s\" \"%s\" %f %f 2>/dev/null",
154 this->video
= popen( command
, "r" );
160 FILE *producer_ffmpeg_run_audio( producer_ffmpeg
this, mlt_timecode position
)
163 mlt_producer producer
= &this->parent
;
165 // Get the properties of the producer
166 mlt_properties properties
= mlt_producer_properties( producer
);
168 if ( this->audio
== NULL
)
170 int audio_loop
= mlt_properties_get_int( properties
, "audio_loop" );
172 if ( !this->open
|| audio_loop
)
174 const char *mlt_prefix
= mlt_factory_prefix( );
175 char *audio_type
= mlt_properties_get( properties
, "audio_type" );
176 char *audio_file
= mlt_properties_get( properties
, "audio_file" );
177 int frequency
= mlt_properties_get_int( properties
, "audio_rate" );
178 int channels
= mlt_properties_get_int( properties
, "audio_channels" );
179 int track
= mlt_properties_get_int( properties
, "audio_track" );
180 char command
[ 1024 ] = "";
182 sprintf( command
, "%s/ffmpeg/audio.sh \"%s\" \"%s\" %f %d %d %d 2>/dev/null",
191 this->audio
= popen( command
, "r" );
197 static void producer_ffmpeg_position( producer_ffmpeg
this, uint64_t requested
, int *skip
)
201 if ( this->open
&& requested
> this->expected
)
203 // Skip the following n frames
204 *skip
= requested
- this->expected
;
206 else if ( requested
!= this->expected
)
208 // Close the video pipe
209 if ( this->video
!= NULL
)
210 pclose( this->video
);
213 // Close the audio pipe
214 if ( this->audio
!= NULL
)
215 pclose( this->audio
);
218 // We should not be open now
220 this->end_of_video
= 0;
221 this->end_of_audio
= 0;
224 // This is the next frame we expect
225 this->expected
= requested
+ 1;
228 this->video
= producer_ffmpeg_run_video( this, 0 );
230 // Open the audio pipe
231 this->audio
= producer_ffmpeg_run_audio( this, 0 );
233 // We should be open now
237 static int sample_calculator( float fps
, int frequency
, int64_t position
)
241 if ( fps
> 29 && fps
<= 30 )
243 samples
= frequency
/ 30;
248 if ( position
% 5 != 0 )
252 if ( position
% 300 == 0 )
254 else if ( position
% 30 == 0 )
256 else if ( position
% 2 == 0 )
262 if ( position
% 30 == 0 )
264 else if ( position
% 29 == 0 )
266 else if ( position
% 4 == 2 )
277 samples
= frequency
/ fps
;
283 static int producer_get_audio( mlt_frame
this, int16_t **buffer
, mlt_audio_format
*format
, int *frequency
, int *channels
, int *samples
)
285 // Get the frames properties
286 mlt_properties properties
= mlt_frame_properties( this );
288 producer_ffmpeg producer
= mlt_properties_get_data( properties
, "producer_ffmpeg", NULL
);
289 mlt_properties producer_properties
= mlt_producer_properties( &producer
->parent
);
291 int64_t target
= mlt_properties_get_double( properties
, "target" );
292 int skip
= mlt_properties_get_int( properties
, "skip" );
294 float fps
= mlt_properties_get_double( producer_properties
, "fps" );
295 *frequency
= mlt_properties_get_int( producer_properties
, "audio_rate" );
296 *channels
= mlt_properties_get_int( producer_properties
, "audio_channels" );
299 int size
= ( *frequency
/ 25 ) * *channels
* 2;
302 *buffer
= malloc( size
);
305 if ( producer
->audio
!= NULL
)
309 *samples
= sample_calculator( fps
, *frequency
, target
- skip
);
310 if ( fread( *buffer
, *samples
* *channels
* 2, 1, producer
->audio
) != 1 )
312 pclose( producer
->audio
);
313 producer
->audio
= NULL
;
314 producer
->end_of_audio
= 1;
317 while( producer
->audio
!= NULL
&& skip
-- );
321 *samples
= sample_calculator( fps
, *frequency
, target
);
322 memset( *buffer
, 0, size
);
325 // Pass the data on the frame properties
326 mlt_properties_set_data( properties
, "audio", *buffer
, size
, free
, NULL
);
328 // Set the producer properties
329 mlt_properties_set_int( producer_properties
, "end_of_clip", producer
->end_of_video
&& producer
->end_of_audio
);
334 static int read_ffmpeg_header( producer_ffmpeg
this, int *width
, int *height
)
338 FILE *video
= this->video
;
340 if ( fgets( temp
, 132, video
) )
342 if ( strncmp( temp
, "FRAME", 5 ) )
344 if ( strstr( temp
, " W" ) != NULL
)
345 *width
= atoi( strstr( temp
, " W" ) + 2 );
346 if ( strstr( temp
, " H" ) != NULL
)
347 *height
= atoi( strstr( temp
, " H" ) + 2 );
349 fgets( temp
, 132, video
);
350 this->width
= *width
;
351 this->height
= *height
;
355 *width
= this->width
;
356 *height
= this->height
;
363 static int producer_get_frame( mlt_producer producer
, mlt_frame_ptr frame
, int index
)
365 producer_ffmpeg
this = producer
->child
;
370 // Construct a test frame
371 *frame
= mlt_frame_init( );
373 // Are we at the position expected?
374 producer_ffmpeg_position( this, mlt_producer_frame( producer
), &skip
);
376 // Get properties objects
377 mlt_properties producer_properties
= mlt_producer_properties( &this->parent
);
379 // Get the frames properties
380 mlt_properties properties
= mlt_frame_properties( *frame
);
382 FILE *video
= this->video
;
384 mlt_properties_set_double( properties
, "target", mlt_producer_frame( producer
) );
385 mlt_properties_set_int( properties
, "skip", skip
);
388 if ( video
!= NULL
&& read_ffmpeg_header( this, &width
, &height
) == 2 )
391 uint8_t *image
= malloc( width
* height
* 2 );
396 if ( fread( this->buffer
, width
* height
* 3 / 2, 1, video
) == 1 )
397 read_ffmpeg_header( this, &width
, &height
);
402 fread( this->buffer
, width
* height
* 3 / 2, 1, video
);
405 mlt_convert_yuv420p_to_yuv422( this->buffer
, width
, height
, width
, image
);
407 // Pass the data on the frame properties
408 mlt_properties_set_data( properties
, "image", image
, width
* height
* 2, free
, NULL
);
409 mlt_properties_set_int( properties
, "width", width
);
410 mlt_properties_set_int( properties
, "height", height
);
411 mlt_properties_set_int( properties
, "has_image", 1 );
413 // Push the image callback
414 mlt_frame_push_get_image( *frame
, producer_get_image
);
420 if ( this->video
!= NULL
)
422 int video_loop
= mlt_properties_get_int( producer_properties
, "video_loop" );
424 // Inform caller that end of clip is reached
425 this->end_of_video
= !video_loop
;
426 pclose( this->video
);
430 // Push the image callback
431 mlt_frame_push_get_image( *frame
, producer_get_image
);
434 // Set the audio pipe
435 mlt_properties_set_data( properties
, "producer_ffmpeg", this, 0, NULL
, NULL
);
437 // Hmm - register audio callback
438 ( *frame
)->get_audio
= producer_get_audio
;
440 // Get the additional properties
441 double aspect_ratio
= mlt_properties_get_double( producer_properties
, "aspect_ratio" );
442 double speed
= mlt_properties_get_double( producer_properties
, "speed" );
443 char *video_file
= mlt_properties_get( producer_properties
, "video_file" );
445 // Set them on the frame
446 mlt_properties_set_double( properties
, "aspect_ratio", aspect_ratio
);
447 mlt_properties_set_double( properties
, "speed", speed
);
448 if ( strchr( video_file
, '/' ) != NULL
)
449 mlt_properties_set( properties
, "file", strrchr( video_file
, '/' ) + 1 );
451 mlt_properties_set( properties
, "file", video_file
);
454 // Set the out point on the producer
455 if ( this->end_of_video
&& this->end_of_audio
)
457 mlt_properties_set_int( properties
, "end_of_clip", 1 );
458 mlt_properties_set_timecode( producer_properties
, "length", mlt_producer_position( &this->parent
) );
459 mlt_producer_set_in_and_out( &this->parent
, mlt_producer_get_in( &this->parent
), mlt_producer_position( &this->parent
) );
462 // Update timecode on the frame we're creating
463 mlt_frame_set_timecode( *frame
, mlt_producer_position( producer
) );
465 // Calculate the next timecode
466 mlt_producer_prepare_next( producer
);
471 static void producer_close( mlt_producer parent
)
473 producer_ffmpeg
this = parent
->child
;
475 pclose( this->video
);
477 pclose( this->audio
);
478 parent
->close
= NULL
;
479 mlt_producer_close( parent
);
480 free( this->buffer
);