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 #include <sys/types.h>
34 typedef struct producer_ffmpeg_s *producer_ffmpeg;
36 /** Bi-directional pipe structure.
47 /** Create a bidirectional pipe for the given command.
50 rwpipe *rwpipe_open( char *command )
52 rwpipe *this = malloc( sizeof( rwpipe ) );
66 signal( SIGPIPE, SIG_DFL );
67 signal( SIGHUP, SIG_DFL );
68 signal( SIGINT, SIG_DFL );
69 signal( SIGTERM, SIG_DFL );
70 signal( SIGSTOP, SIG_DFL );
71 signal( SIGCHLD, SIG_DFL );
73 dup2( output[ 0 ], STDIN_FILENO );
74 dup2( input[ 1 ], STDOUT_FILENO );
81 execl( "/bin/sh", "sh", "-c", command, NULL );
86 setpgid( this->pid, this->pid );
91 this->reader = fdopen( input[ 0 ], "r" );
92 this->writer = fdopen( output[ 1 ], "w" );
99 /** Read data from the pipe.
102 FILE *rwpipe_reader( rwpipe *this )
110 /** Write data to the pipe.
113 FILE *rwpipe_writer( rwpipe *this )
121 /** Close the pipe and process.
124 void rwpipe_close( rwpipe *this )
128 fclose( this->reader );
129 fclose( this->writer );
130 kill( - this->pid, SIGKILL );
131 waitpid( - this->pid, NULL, 0 );
136 struct producer_ffmpeg_s
138 struct mlt_producer_s parent;
152 static int producer_get_frame( mlt_producer producer, mlt_frame_ptr frame, int index );
153 static void producer_close( mlt_producer parent );
155 /** Consutruct an ffmpeg producer.
158 mlt_producer producer_ffmpeg_init( char *file )
160 producer_ffmpeg this = calloc( sizeof( struct producer_ffmpeg_s ), 1 );
161 if ( file != NULL && this != NULL && mlt_producer_init( &this->parent, this ) == 0 )
164 mlt_producer producer = &this->parent;
166 // Get the properties of the producer
167 mlt_properties properties = mlt_producer_properties( producer );
169 // Override get_frame and close methods
170 producer->get_frame = producer_get_frame;
171 producer->close = producer_close;
173 // Set the properties
174 mlt_properties_set( properties, "mlt_type", "producer_ffmpeg" );
176 if ( !strcmp( file, "v4l" ) )
178 mlt_properties_set( properties, "video_type", "v4l" );
179 mlt_properties_set( properties, "video_file", "/dev/video0" );
180 mlt_properties_set( properties, "video_size", "640x480" );
181 mlt_properties_set( properties, "audio_type", "dsp" );
182 mlt_properties_set( properties, "audio_file", "/dev/dsp" );
186 mlt_properties_set( properties, "video_type", "file" );
187 mlt_properties_set( properties, "video_file", file );
188 mlt_properties_set( properties, "video_size", "" );
189 mlt_properties_set( properties, "audio_type", "file" );
190 mlt_properties_set( properties, "audio_file", file );
193 mlt_properties_set_int( properties, "audio_rate", 48000 );
194 mlt_properties_set_int( properties, "audio_channels", 2 );
195 mlt_properties_set_int( properties, "audio_track", 0 );
197 mlt_properties_set( properties, "log_id", file );
198 mlt_properties_set( properties, "resource", file );
200 this->buffer = malloc( 1024 * 1024 * 2 );
208 static int producer_get_image( mlt_frame this, uint8_t **buffer, mlt_image_format *format, int *width, int *height, int writable )
210 // Get the frames properties
211 mlt_properties properties = mlt_frame_properties( this );
213 if ( mlt_properties_get_int( properties, "has_image" ) )
215 // Get width and height
216 *format = mlt_image_yuv422;
217 *width = mlt_properties_get_int( properties, "width" );
218 *height = mlt_properties_get_int( properties, "height" );
220 // Specify format and image
221 *buffer = mlt_properties_get_data( properties, "image", NULL );
225 mlt_frame_get_image( this, buffer, format, width, height, writable );
231 FILE *producer_ffmpeg_run_video( producer_ffmpeg this, mlt_timecode position )
233 if ( this->video == NULL )
236 mlt_producer producer = &this->parent;
238 // Get the properties of the producer
239 mlt_properties properties = mlt_producer_properties( producer );
241 // Get the video loop property
242 int video_loop = mlt_properties_get_int( properties, "video_loop" );
244 if ( !this->open || video_loop )
246 const char *mlt_prefix = mlt_factory_prefix( );
247 char *video_type = mlt_properties_get( properties, "video_type" );
248 char *video_file = mlt_properties_get( properties, "video_file" );
249 float video_rate = mlt_properties_get_double( properties, "fps" );
250 char *video_size = mlt_properties_get( properties, "video_size" );
251 char command[ 1024 ] = "";
253 sprintf( command, "%s/ffmpeg/video.sh \"%s\" \"%s\" \"%s\" %f %f 2>/dev/null",
261 this->video_pipe = rwpipe_open( command );
262 this->video = rwpipe_reader( this->video_pipe );
268 FILE *producer_ffmpeg_run_audio( producer_ffmpeg this, mlt_timecode position )
271 mlt_producer producer = &this->parent;
273 // Get the properties of the producer
274 mlt_properties properties = mlt_producer_properties( producer );
276 if ( this->audio == NULL )
278 int audio_loop = mlt_properties_get_int( properties, "audio_loop" );
280 if ( !this->open || audio_loop )
282 const char *mlt_prefix = mlt_factory_prefix( );
283 char *audio_type = mlt_properties_get( properties, "audio_type" );
284 char *audio_file = mlt_properties_get( properties, "audio_file" );
285 int frequency = mlt_properties_get_int( properties, "audio_rate" );
286 int channels = mlt_properties_get_int( properties, "audio_channels" );
287 int track = mlt_properties_get_int( properties, "audio_track" );
288 char command[ 1024 ] = "";
290 sprintf( command, "%s/ffmpeg/audio.sh \"%s\" \"%s\" %f %d %d %d 2>/dev/null",
299 this->audio_pipe = rwpipe_open( command );
300 this->audio = rwpipe_reader( this->audio_pipe );
306 static void producer_ffmpeg_position( producer_ffmpeg this, uint64_t requested, int *skip )
310 if ( this->open && requested > this->expected )
312 // Skip the following n frames
313 *skip = requested - this->expected;
315 else if ( requested != this->expected )
317 // Close the video pipe
318 if ( this->video != NULL )
319 rwpipe_close( this->video_pipe );
322 // Close the audio pipe
323 if ( this->audio != NULL )
324 rwpipe_close( this->audio_pipe );
327 // We should not be open now
329 this->end_of_video = 0;
330 this->end_of_audio = 0;
333 // This is the next frame we expect
334 this->expected = requested + 1;
337 this->video = producer_ffmpeg_run_video( this, 0 );
339 // Open the audio pipe
340 this->audio = producer_ffmpeg_run_audio( this, 0 );
342 // We should be open now
346 static int sample_calculator( float fps, int frequency, int64_t position )
350 if ( fps > 29 && fps <= 30 )
352 samples = frequency / 30;
357 if ( position % 5 != 0 )
361 if ( position % 300 == 0 )
363 else if ( position % 30 == 0 )
365 else if ( position % 2 == 0 )
371 if ( position % 30 == 0 )
373 else if ( position % 29 == 0 )
375 else if ( position % 4 == 2 )
386 samples = frequency / fps;
392 static int producer_get_audio( mlt_frame this, int16_t **buffer, mlt_audio_format *format, int *frequency, int *channels, int *samples )
394 // Get the frames properties
395 mlt_properties properties = mlt_frame_properties( this );
397 producer_ffmpeg producer = mlt_properties_get_data( properties, "producer_ffmpeg", NULL );
398 mlt_properties producer_properties = mlt_producer_properties( &producer->parent );
400 int64_t target = mlt_properties_get_double( properties, "target" );
401 int skip = mlt_properties_get_int( properties, "skip" );
403 float fps = mlt_properties_get_double( producer_properties, "fps" );
404 *frequency = mlt_properties_get_int( producer_properties, "audio_rate" );
405 *channels = mlt_properties_get_int( producer_properties, "audio_channels" );
408 int size = ( *frequency / 25 ) * *channels * 2;
411 *buffer = malloc( size );
414 if ( producer->audio != NULL )
418 *samples = sample_calculator( fps, *frequency, target - skip );
419 if ( fread( *buffer, *samples * *channels * 2, 1, producer->audio ) != 1 )
421 rwpipe_close( producer->audio_pipe );
422 producer->audio = NULL;
423 producer->end_of_audio = 1;
426 while( producer->audio != NULL && skip -- );
430 *samples = sample_calculator( fps, *frequency, target );
431 memset( *buffer, 0, size );
434 // Pass the data on the frame properties
435 mlt_properties_set_data( properties, "audio", *buffer, size, free, NULL );
437 // Set the producer properties
438 mlt_properties_set_int( producer_properties, "end_of_clip", producer->end_of_video && producer->end_of_audio );
443 static int read_ffmpeg_header( producer_ffmpeg this, int *width, int *height )
447 FILE *video = this->video;
449 if ( fgets( temp, 132, video ) )
451 if ( strncmp( temp, "FRAME", 5 ) )
453 if ( strstr( temp, " W" ) != NULL )
454 *width = atoi( strstr( temp, " W" ) + 2 );
455 if ( strstr( temp, " H" ) != NULL )
456 *height = atoi( strstr( temp, " H" ) + 2 );
458 fgets( temp, 132, video );
459 this->width = *width;
460 this->height = *height;
464 *width = this->width;
465 *height = this->height;
472 static int producer_get_frame( mlt_producer producer, mlt_frame_ptr frame, int index )
474 producer_ffmpeg this = producer->child;
479 // Construct a test frame
480 *frame = mlt_frame_init( );
482 // Are we at the position expected?
483 producer_ffmpeg_position( this, mlt_producer_frame( producer ), &skip );
485 // Get properties objects
486 mlt_properties producer_properties = mlt_producer_properties( &this->parent );
488 // Get the frames properties
489 mlt_properties properties = mlt_frame_properties( *frame );
491 FILE *video = this->video;
493 mlt_properties_set_double( properties, "target", mlt_producer_frame( producer ) );
494 mlt_properties_set_int( properties, "skip", skip );
497 if ( video != NULL && read_ffmpeg_header( this, &width, &height ) == 2 )
500 uint8_t *image = malloc( width * height * 2 );
505 if ( fread( this->buffer, width * height * 3 / 2, 1, video ) == 1 )
506 read_ffmpeg_header( this, &width, &height );
511 fread( this->buffer, width * height * 3 / 2, 1, video );
514 mlt_convert_yuv420p_to_yuv422( this->buffer, width, height, width, image );
516 // Pass the data on the frame properties
517 mlt_properties_set_data( properties, "image", image, width * height * 2, free, NULL );
518 mlt_properties_set_int( properties, "width", width );
519 mlt_properties_set_int( properties, "height", height );
520 mlt_properties_set_int( properties, "has_image", 1 );
522 // Push the image callback
523 mlt_frame_push_get_image( *frame, producer_get_image );
529 if ( this->video != NULL )
531 int video_loop = mlt_properties_get_int( producer_properties, "video_loop" );
533 // Inform caller that end of clip is reached
534 this->end_of_video = !video_loop;
535 rwpipe_close( this->video_pipe );
539 // Push the image callback
540 mlt_frame_push_get_image( *frame, producer_get_image );
543 // Set the audio pipe
544 mlt_properties_set_data( properties, "producer_ffmpeg", this, 0, NULL, NULL );
546 // Hmm - register audio callback
547 ( *frame )->get_audio = producer_get_audio;
549 // Get the additional properties
550 double aspect_ratio = mlt_properties_get_double( producer_properties, "aspect_ratio" );
551 double speed = mlt_properties_get_double( producer_properties, "speed" );
552 char *video_file = mlt_properties_get( producer_properties, "video_file" );
554 // Set them on the frame
555 mlt_properties_set_double( properties, "aspect_ratio", aspect_ratio );
556 mlt_properties_set_double( properties, "speed", speed );
557 if ( strchr( video_file, '/' ) != NULL )
558 mlt_properties_set( properties, "file", strrchr( video_file, '/' ) + 1 );
560 mlt_properties_set( properties, "file", video_file );
563 // Set the out point on the producer
564 if ( this->end_of_video && this->end_of_audio )
566 mlt_properties_set_int( properties, "end_of_clip", 1 );
567 mlt_properties_set_timecode( producer_properties, "length", mlt_producer_position( &this->parent ) );
568 mlt_producer_set_in_and_out( &this->parent, mlt_producer_get_in( &this->parent ), mlt_producer_position( &this->parent ) );
571 // Update timecode on the frame we're creating
572 mlt_frame_set_timecode( *frame, mlt_producer_position( producer ) );
574 // Calculate the next timecode
575 mlt_producer_prepare_next( producer );
580 static void producer_close( mlt_producer parent )
582 producer_ffmpeg this = parent->child;
584 rwpipe_close( this->video_pipe );
586 rwpipe_close( this->audio_pipe );
587 parent->close = NULL;
588 mlt_producer_close( parent );
589 free( this->buffer );