+++ /dev/null
-/*
- * producer_ppm.c -- simple ppm test case
- * Copyright (C) 2003-2004 Ushodaya Enterprises Limited
- * Author: Charles Yates <charles.yates@pandora.be>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include <framework/mlt_producer.h>
-#include <framework/mlt_frame.h>
-
-#include <stdlib.h>
-#include <string.h>
-
-typedef struct producer_ppm_s *producer_ppm;
-
-struct producer_ppm_s
-{
- struct mlt_producer_s parent;
- char *command;
- FILE *video;
- FILE *audio;
- uint64_t expected;
-};
-
-static int producer_get_frame( mlt_producer producer, mlt_frame_ptr frame, int index );
-static void producer_close( mlt_producer parent );
-
-mlt_producer producer_ppm_init( mlt_profile profile, mlt_service_type type, const char *id, char *command )
-{
- producer_ppm this = calloc( sizeof( struct producer_ppm_s ), 1 );
- if ( this != NULL && mlt_producer_init( &this->parent, this ) == 0 )
- {
- mlt_producer producer = &this->parent;
- mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
-
- producer->get_frame = producer_get_frame;
- producer->close = ( mlt_destructor )producer_close;
-
- if ( command != NULL )
- {
- mlt_properties_set( properties, "resource", command );
- this->command = strdup( command );
- }
- else
- {
- mlt_properties_set( properties, "resource", "ppm test" );
- }
-
- return producer;
- }
- free( this );
- return NULL;
-}
-
-static int producer_get_image( mlt_frame this, uint8_t **buffer, mlt_image_format *format, int *width, int *height, int writable )
-{
- // Get the frames properties
- mlt_properties properties = MLT_FRAME_PROPERTIES( this );
-
- if ( mlt_properties_get_int( properties, "has_image" ) )
- {
- // Get the RGB image
- uint8_t *rgb = mlt_properties_get_data( properties, "image", NULL );
-
- // Get width and height
- *width = mlt_properties_get_int( properties, "width" );
- *height = mlt_properties_get_int( properties, "height" );
-
- // Convert to requested format
- if ( *format == mlt_image_yuv422 )
- {
- uint8_t *image = mlt_pool_alloc( *width * ( *height + 1 ) * 2 );
- mlt_convert_rgb24_to_yuv422( rgb, *width, *height, *width * 3, image );
- mlt_properties_set_data( properties, "image", image, *width * ( *height + 1 ) * 2, ( mlt_destructor )mlt_pool_release, NULL );
- *buffer = image;
- }
- else if ( *format == mlt_image_rgb24 )
- {
- *buffer = rgb;
- }
- }
- else
- {
- mlt_frame_get_image( this, buffer, format, width, height, writable );
- }
-
- return 0;
-}
-
-FILE *producer_ppm_run_video( producer_ppm this )
-{
- if ( this->video == NULL )
- {
- if ( this->command == NULL )
- {
- this->video = popen( "image2raw -k -r 25 -ppm /usr/share/pixmaps/*.png", "r" );
- }
- else
- {
- char command[ 1024 ];
- float fps = mlt_producer_get_fps( &this->parent );
- float position = mlt_producer_position( &this->parent );
- sprintf( command, "ffmpeg -i \"%s\" -ss %f -f imagepipe -r %f -img ppm - 2>/dev/null", this->command, position, fps );
- this->video = popen( command, "r" );
- }
- }
- return this->video;
-}
-
-FILE *producer_ppm_run_audio( producer_ppm this )
-{
- if ( this->audio == NULL )
- {
- if ( this->command != NULL )
- {
- char command[ 1024 ];
- float position = mlt_producer_position( &this->parent );
- sprintf( command, "ffmpeg -i \"%s\" -ss %f -f s16le -ar 48000 -ac 2 - 2>/dev/null", this->command, position );
- this->audio = popen( command, "r" );
- }
- }
- return this->audio;
-}
-
-static void producer_ppm_position( producer_ppm this, uint64_t requested )
-{
- if ( requested != this->expected )
- {
- if ( this->video != NULL )
- pclose( this->video );
- this->video = NULL;
- if ( this->audio != NULL )
- pclose( this->audio );
- this->audio = NULL;
- }
-
- // This is the next frame we expect
- this->expected = mlt_producer_frame( &this->parent ) + 1;
-
- // Open the pipe
- this->video = producer_ppm_run_video( this );
-
- // Open the audio pipe
- this->audio = producer_ppm_run_audio( this );
-
-}
-
-static int producer_get_audio( mlt_frame this, int16_t **buffer, mlt_audio_format *format, int *frequency, int *channels, int *samples )
-{
- // Get the frames properties
- mlt_properties properties = MLT_FRAME_PROPERTIES( this );
-
- FILE *pipe = mlt_properties_get_data( properties, "audio.pipe", NULL );
-
- *frequency = 48000;
- *channels = 2;
- *samples = 1920;
-
- // Size
- int size = *samples * *channels * 2;
-
- // Allocate an image
- *buffer = malloc( size );
-
- // Read it
- if ( pipe != NULL )
- fread( *buffer, size, 1, pipe );
- else
- memset( *buffer, 0, size );
-
- // Pass the data on the frame properties
- mlt_properties_set_data( properties, "audio", *buffer, size, free, NULL );
-
- return 0;
-}
-
-static int read_ppm_header( FILE *video, int *width, int *height )
-{
- int count = 0;
- {
- char temp[ 132 ];
- fgets( temp, 132, video );
- fgets( temp, 132, video );
- count += sscanf( temp, "%d %d", width, height );
- fgets( temp, 132, video );
- }
- return count;
-}
-
-static int producer_get_frame( mlt_producer producer, mlt_frame_ptr frame, int index )
-{
- producer_ppm this = producer->child;
- int width;
- int height;
-
- // Construct a test frame
- *frame = mlt_frame_init( MLT_PRODUCER_SERVICE( producer ) );
-
- // Are we at the position expected?
- producer_ppm_position( this, mlt_producer_frame( producer ) );
-
- // Get the frames properties
- mlt_properties properties = MLT_FRAME_PROPERTIES( *frame );
-
- FILE *video = this->video;
- FILE *audio = this->audio;
-
- // Read the video
- if ( video != NULL && read_ppm_header( video, &width, &height ) == 2 )
- {
- // Allocate an image
- uint8_t *image = mlt_pool_alloc( width * ( height + 1 ) * 3 );
-
- // Read it
- fread( image, width * height * 3, 1, video );
-
- // Pass the data on the frame properties
- mlt_properties_set_data( properties, "image", image, width * ( height + 1 ) * 3, ( mlt_destructor )mlt_pool_release, NULL );
- mlt_properties_set_int( properties, "width", width );
- mlt_properties_set_int( properties, "height", height );
- mlt_properties_set_int( properties, "has_image", 1 );
- mlt_properties_set_int( properties, "progressive", 1 );
- mlt_properties_set_double( properties, "aspect_ratio", 1 );
-
- // Push the image callback
- mlt_frame_push_get_image( *frame, producer_get_image );
- }
- else
- {
- // Push the image callback
- mlt_frame_push_get_image( *frame, producer_get_image );
- }
-
- // Set the audio pipe
- mlt_properties_set_data( properties, "audio.pipe", audio, 0, NULL, NULL );
-
- // Hmm - register audio callback
- mlt_frame_push_audio( *frame, producer_get_audio );
-
- // Update timecode on the frame we're creating
- mlt_frame_set_position( *frame, mlt_producer_position( producer ) );
-
- // Calculate the next timecode
- mlt_producer_prepare_next( producer );
-
- return 0;
-}
-
-static void producer_close( mlt_producer parent )
-{
- producer_ppm this = parent->child;
- if ( this->video )
- pclose( this->video );
- if ( this->audio )
- pclose( this->audio );
- free( this->command );
- parent->close = NULL;
- mlt_producer_close( parent );
- free( this );
-}
projects / melted / blobdiff