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 this->buffer = malloc( 1024 * 1024 * 2 );
99 static int producer_get_image( mlt_frame this, uint8_t **buffer, mlt_image_format *format, int *width, int *height, int writable )
101 // Get the frames properties
102 mlt_properties properties = mlt_frame_properties( this );
104 if ( mlt_properties_get_int( properties, "has_image" ) )
106 // Get width and height
107 *format = mlt_image_yuv422;
108 *width = mlt_properties_get_int( properties, "width" );
109 *height = mlt_properties_get_int( properties, "height" );
111 // Specify format and image
112 *buffer = mlt_properties_get_data( properties, "image", NULL );
116 mlt_frame_get_image( this, buffer, format, width, height, writable );
122 FILE *producer_ffmpeg_run_video( producer_ffmpeg this )
124 if ( this->video == NULL )
127 mlt_producer producer = &this->parent;
129 // Get the properties of the producer
130 mlt_properties properties = mlt_producer_properties( producer );
132 // Get the video loop property
133 int video_loop = mlt_properties_get_int( properties, "video_loop" );
135 if ( !this->open || video_loop )
137 const char *mlt_prefix = mlt_factory_prefix( );
138 char *video_type = mlt_properties_get( properties, "video_type" );
139 char *video_file = mlt_properties_get( properties, "video_file" );
140 float video_rate = mlt_properties_get_double( properties, "fps" );
141 char *video_size = mlt_properties_get( properties, "video_size" );
142 char command[ 1024 ] = "";
143 float position = mlt_producer_position( &this->parent );
145 if ( video_loop || position < 0 ) position = 0;
147 sprintf( command, "%s/ffmpeg/video.sh \"%s\" \"%s\" \"%s\" %f %f 2>/dev/null",
155 this->video = popen( command, "r" );
161 FILE *producer_ffmpeg_run_audio( producer_ffmpeg this )
164 mlt_producer producer = &this->parent;
166 // Get the properties of the producer
167 mlt_properties properties = mlt_producer_properties( producer );
169 if ( this->audio == NULL )
171 int audio_loop = mlt_properties_get_int( properties, "audio_loop" );
173 if ( !this->open || audio_loop )
175 const char *mlt_prefix = mlt_factory_prefix( );
176 char *audio_type = mlt_properties_get( properties, "audio_type" );
177 char *audio_file = mlt_properties_get( properties, "audio_file" );
178 int frequency = mlt_properties_get_int( properties, "audio_rate" );
179 int channels = mlt_properties_get_int( properties, "audio_channels" );
180 int track = mlt_properties_get_int( properties, "audio_track" );
181 char command[ 1024 ] = "";
182 float position = mlt_producer_position( &this->parent );
184 if ( audio_loop || position < 0 ) position = 0;
186 sprintf( command, "%s/ffmpeg/audio.sh \"%s\" \"%s\" %f %d %d %d 2>/dev/null",
195 this->audio = popen( command, "r" );
201 static void producer_ffmpeg_position( producer_ffmpeg this, uint64_t requested, int *skip )
205 if ( this->open && requested > this->expected )
207 // Skip the following n frames
208 *skip = requested - this->expected;
210 else if ( requested != this->expected )
212 // Close the video pipe
213 if ( this->video != NULL )
214 pclose( this->video );
217 // Close the audio pipe
218 if ( this->audio != NULL )
219 pclose( this->audio );
222 // We should not be open now
224 this->end_of_video = 0;
225 this->end_of_audio = 0;
228 // This is the next frame we expect
229 this->expected = mlt_producer_frame( &this->parent ) + 1;
232 this->video = producer_ffmpeg_run_video( this );
234 // Open the audio pipe
235 this->audio = producer_ffmpeg_run_audio( this );
237 // We should be open now
241 static int sample_calculator( float fps, int frequency, int64_t position )
245 if ( fps > 29 && fps <= 30 )
247 samples = frequency / 30;
252 if ( position % 5 != 0 )
256 if ( position % 300 == 0 )
258 else if ( position % 30 == 0 )
260 else if ( position % 2 == 0 )
266 if ( position % 30 == 0 )
268 else if ( position % 29 == 0 )
270 else if ( position % 4 == 2 )
281 samples = frequency / fps;
287 static int producer_get_audio( mlt_frame this, int16_t **buffer, mlt_audio_format *format, int *frequency, int *channels, int *samples )
289 // Get the frames properties
290 mlt_properties properties = mlt_frame_properties( this );
292 producer_ffmpeg producer = mlt_properties_get_data( properties, "producer_ffmpeg", NULL );
293 mlt_properties producer_properties = mlt_producer_properties( &producer->parent );
295 int64_t target = mlt_properties_get_double( properties, "target" );
296 int skip = mlt_properties_get_int( properties, "skip" );
298 float fps = mlt_properties_get_double( producer_properties, "fps" );
299 *frequency = mlt_properties_get_int( producer_properties, "audio_rate" );
300 *channels = mlt_properties_get_int( producer_properties, "audio_channels" );
303 int size = ( *frequency / 25 ) * *channels * 2;
306 *buffer = malloc( size );
309 if ( producer->audio != NULL )
313 *samples = sample_calculator( fps, *frequency, target - skip );
314 if ( fread( *buffer, *samples * *channels * 2, 1, producer->audio ) != 1 )
316 pclose( producer->audio );
317 producer->audio = NULL;
318 producer->end_of_audio = 1;
321 while( producer->audio != NULL && skip -- );
325 *samples = sample_calculator( fps, *frequency, target );
326 memset( *buffer, 0, size );
329 // Pass the data on the frame properties
330 mlt_properties_set_data( properties, "audio", *buffer, size, free, NULL );
332 // Set the producer properties
333 mlt_properties_set_int( producer_properties, "end_of_clip", producer->end_of_video && producer->end_of_audio );
338 static int read_ffmpeg_header( producer_ffmpeg this, int *width, int *height )
342 FILE *video = this->video;
344 if ( fgets( temp, 132, video ) )
346 if ( strncmp( temp, "FRAME", 5 ) )
348 if ( strstr( temp, " W" ) != NULL )
349 *width = atoi( strstr( temp, " W" ) + 2 );
350 if ( strstr( temp, " H" ) != NULL )
351 *height = atoi( strstr( temp, " H" ) + 2 );
353 fgets( temp, 132, video );
354 this->width = *width;
355 this->height = *height;
359 *width = this->width;
360 *height = this->height;
367 static int producer_get_frame( mlt_producer producer, mlt_frame_ptr frame, int index )
369 producer_ffmpeg this = producer->child;
374 // Construct a test frame
375 *frame = mlt_frame_init( );
377 // Are we at the position expected?
378 producer_ffmpeg_position( this, mlt_producer_frame( producer ), &skip );
380 // Get properties objects
381 mlt_properties producer_properties = mlt_producer_properties( &this->parent );
383 // Get the frames properties
384 mlt_properties properties = mlt_frame_properties( *frame );
386 FILE *video = this->video;
388 mlt_properties_set_double( properties, "target", mlt_producer_frame( producer ) );
389 mlt_properties_set_int( properties, "skip", skip );
392 if ( video != NULL && read_ffmpeg_header( this, &width, &height ) == 2 )
395 uint8_t *image = malloc( width * height * 2 );
400 if ( fread( this->buffer, width * height * 3 / 2, 1, video ) == 1 )
401 read_ffmpeg_header( this, &width, &height );
406 fread( this->buffer, width * height * 3 / 2, 1, video );
409 mlt_convert_yuv420p_to_yuv422( this->buffer, width, height, width, image );
411 // Pass the data on the frame properties
412 mlt_properties_set_data( properties, "image", image, width * height * 2, free, NULL );
413 mlt_properties_set_int( properties, "width", width );
414 mlt_properties_set_int( properties, "height", height );
415 mlt_properties_set_int( properties, "has_image", 1 );
417 // Push the image callback
418 mlt_frame_push_get_image( *frame, producer_get_image );
424 if ( this->video != NULL )
426 int video_loop = mlt_properties_get_int( producer_properties, "video_loop" );
428 // Inform caller that end of clip is reached
429 this->end_of_video = !video_loop;
430 pclose( this->video );
434 // Push the image callback
435 mlt_frame_push_get_image( *frame, producer_get_image );
438 // Set the audio pipe
439 mlt_properties_set_data( properties, "producer_ffmpeg", this, 0, NULL, NULL );
440 mlt_properties_set_int( properties, "end_of_clip", this->end_of_video && this->end_of_audio );
442 // Hmm - register audio callback
443 ( *frame )->get_audio = producer_get_audio;
445 // Get the additional properties
446 double aspect_ratio = mlt_properties_get_double( producer_properties, "aspect_ratio" );
447 double speed = mlt_properties_get_double( producer_properties, "speed" );
449 // Set them on the frame
450 mlt_properties_set_double( properties, "aspect_ratio", aspect_ratio );
451 mlt_properties_set_double( properties, "speed", speed );
453 // Set the out point on the producer
454 if ( this->end_of_video && this->end_of_audio )
455 mlt_producer_set_in_and_out( &this->parent, mlt_producer_get_in( &this->parent ), mlt_producer_position( &this->parent ) );
457 // Update timecode on the frame we're creating
458 mlt_frame_set_timecode( *frame, mlt_producer_position( producer ) );
460 // Calculate the next timecode
461 mlt_producer_prepare_next( producer );
466 static void producer_close( mlt_producer parent )
468 producer_ffmpeg this = parent->child;
470 pclose( this->video );
472 pclose( this->audio );
473 parent->close = NULL;
474 mlt_producer_close( parent );
475 free( this->buffer );