+++ /dev/null
-/*
- * consumer_sdl_preview.c -- A Simple DirectMedia Layer consumer
- * Copyright (C) 2004-2005 Ushodaya Enterprises Limited
- * Author: Charles Yates
- *
- * 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_consumer.h>
-#include <framework/mlt_frame.h>
-#include <framework/mlt_factory.h>
-#include <framework/mlt_producer.h>
-#include <stdlib.h>
-#include <string.h>
-#include <pthread.h>
-#include <SDL/SDL.h>
-#include <SDL/SDL_syswm.h>
-
-typedef struct consumer_sdl_s *consumer_sdl;
-
-struct consumer_sdl_s
-{
- struct mlt_consumer_s parent;
- mlt_consumer active;
- int ignore_change;
- mlt_consumer play;
- mlt_consumer still;
- pthread_t thread;
- int joined;
- int running;
- int sdl_flags;
- double last_speed;
-
- pthread_cond_t refresh_cond;
- pthread_mutex_t refresh_mutex;
- int refresh_count;
-};
-
-/** Forward references to static functions.
-*/
-
-static int consumer_start( mlt_consumer parent );
-static int consumer_stop( mlt_consumer parent );
-static int consumer_is_stopped( mlt_consumer parent );
-static void consumer_close( mlt_consumer parent );
-static void *consumer_thread( void * );
-static void consumer_frame_show_cb( mlt_consumer sdl, mlt_consumer this, mlt_frame frame );
-static void consumer_sdl_event_cb( mlt_consumer sdl, mlt_consumer this, SDL_Event *event );
-static void consumer_refresh_cb( mlt_consumer sdl, mlt_consumer this, char *name );
-
-mlt_consumer consumer_sdl_preview_init( mlt_profile profile, mlt_service_type type, const char *id, char *arg )
-{
- consumer_sdl this = calloc( sizeof( struct consumer_sdl_s ), 1 );
- if ( this != NULL && mlt_consumer_init( &this->parent, this, profile ) == 0 )
- {
- // Get the parent consumer object
- mlt_consumer parent = &this->parent;
-
- // Get the properties
- mlt_properties properties = MLT_CONSUMER_PROPERTIES( parent );
-
- // Get the width and height
- int width = mlt_properties_get_int( properties, "width" );
- int height = mlt_properties_get_int( properties, "height" );
-
- // Process actual param
- if ( arg == NULL || sscanf( arg, "%dx%d", &width, &height ) == 2 )
- {
- mlt_properties_set_int( properties, "width", width );
- mlt_properties_set_int( properties, "height", height );
- }
-
- // Create child consumers
- this->play = mlt_factory_consumer( profile, "sdl", arg );
- this->still = mlt_factory_consumer( profile, "sdl_still", arg );
- mlt_properties_set( MLT_CONSUMER_PROPERTIES( parent ), "real_time", "0" );
- mlt_properties_set( MLT_CONSUMER_PROPERTIES( parent ), "rescale", "nearest" );
- parent->close = consumer_close;
- parent->start = consumer_start;
- parent->stop = consumer_stop;
- parent->is_stopped = consumer_is_stopped;
- this->joined = 1;
- mlt_events_listen( MLT_CONSUMER_PROPERTIES( this->play ), this, "consumer-frame-show", ( mlt_listener )consumer_frame_show_cb );
- mlt_events_listen( MLT_CONSUMER_PROPERTIES( this->still ), this, "consumer-frame-show", ( mlt_listener )consumer_frame_show_cb );
- mlt_events_listen( MLT_CONSUMER_PROPERTIES( this->play ), this, "consumer-sdl-event", ( mlt_listener )consumer_sdl_event_cb );
- mlt_events_listen( MLT_CONSUMER_PROPERTIES( this->still ), this, "consumer-sdl-event", ( mlt_listener )consumer_sdl_event_cb );
- pthread_cond_init( &this->refresh_cond, NULL );
- pthread_mutex_init( &this->refresh_mutex, NULL );
- mlt_events_listen( MLT_CONSUMER_PROPERTIES( parent ), this, "property-changed", ( mlt_listener )consumer_refresh_cb );
- return parent;
- }
- free( this );
- return NULL;
-}
-
-void consumer_frame_show_cb( mlt_consumer sdl, mlt_consumer parent, mlt_frame frame )
-{
- consumer_sdl this = parent->child;
- this->last_speed = mlt_properties_get_double( MLT_FRAME_PROPERTIES( frame ), "_speed" );
- mlt_events_fire( MLT_CONSUMER_PROPERTIES( parent ), "consumer-frame-show", frame, NULL );
-}
-
-static void consumer_sdl_event_cb( mlt_consumer sdl, mlt_consumer parent, SDL_Event *event )
-{
- mlt_events_fire( MLT_CONSUMER_PROPERTIES( parent ), "consumer-sdl-event", event, NULL );
-}
-
-static void consumer_refresh_cb( mlt_consumer sdl, mlt_consumer parent, char *name )
-{
- if ( !strcmp( name, "refresh" ) )
- {
- consumer_sdl this = parent->child;
- pthread_mutex_lock( &this->refresh_mutex );
- this->refresh_count = this->refresh_count <= 0 ? 1 : this->refresh_count ++;
- pthread_cond_broadcast( &this->refresh_cond );
- pthread_mutex_unlock( &this->refresh_mutex );
- }
-}
-
-static int consumer_start( mlt_consumer parent )
-{
- consumer_sdl this = parent->child;
-
- if ( !this->running )
- {
- // properties
- mlt_properties properties = MLT_CONSUMER_PROPERTIES( parent );
- mlt_properties play = MLT_CONSUMER_PROPERTIES( this->play );
- mlt_properties still = MLT_CONSUMER_PROPERTIES( this->still );
-
- char *window_id = mlt_properties_get( properties, "window_id" );
- char *audio_driver = mlt_properties_get( properties, "audio_driver" );
- char *video_driver = mlt_properties_get( properties, "video_driver" );
- char *audio_device = mlt_properties_get( properties, "audio_device" );
- char *output_display = mlt_properties_get( properties, "output_display" );
- int progressive = mlt_properties_get_int( properties, "progressive" ) | mlt_properties_get_int( properties, "deinterlace" );
-
- consumer_stop( parent );
-
- this->running = 1;
- this->joined = 0;
- this->last_speed = 1;
-
- if ( output_display != NULL )
- setenv( "DISPLAY", output_display, 1 );
-
- if ( window_id != NULL )
- setenv( "SDL_WINDOWID", window_id, 1 );
-
- if ( video_driver != NULL )
- setenv( "SDL_VIDEODRIVER", video_driver, 1 );
-
- if ( audio_driver != NULL )
- setenv( "SDL_AUDIODRIVER", audio_driver, 1 );
-
- if ( audio_device != NULL )
- setenv( "AUDIODEV", audio_device, 1 );
-
- if ( SDL_Init( SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE ) < 0 )
- {
- fprintf( stderr, "Failed to initialize SDL: %s\n", SDL_GetError() );
- return -1;
- }
-
- SDL_EnableKeyRepeat( SDL_DEFAULT_REPEAT_DELAY, SDL_DEFAULT_REPEAT_INTERVAL );
- SDL_EnableUNICODE( 1 );
-
- // Pass properties down
- mlt_properties_set_data( play, "transport_producer", mlt_properties_get_data( properties, "transport_producer", NULL ), 0, NULL, NULL );
- mlt_properties_set_data( still, "transport_producer", mlt_properties_get_data( properties, "transport_producer", NULL ), 0, NULL, NULL );
- mlt_properties_set_data( play, "transport_callback", mlt_properties_get_data( properties, "transport_callback", NULL ), 0, NULL, NULL );
- mlt_properties_set_data( still, "transport_callback", mlt_properties_get_data( properties, "transport_callback", NULL ), 0, NULL, NULL );
-
- mlt_properties_set_int( play, "progressive", progressive );
- mlt_properties_set_int( still, "progressive", progressive );
-
- mlt_properties_pass_list( play, properties, "resize,rescale,width,height,aspect_ratio,display_ratio,volume" );
- mlt_properties_pass_list( still, properties, "resize,rescale,width,height,aspect_ratio,display_ratio" );
- mlt_properties_pass_list( play, properties, "deinterlace_method" );
- mlt_properties_pass_list( still, properties, "deinterlace_method" );
- mlt_properties_pass_list( play, properties, "preview_off,preview_format,window_background" );
- mlt_properties_pass_list( still, properties, "preview_off,preview_format,window_background" );
-
- mlt_properties_pass( play, properties, "play." );
- mlt_properties_pass( still, properties, "still." );
-
- mlt_properties_set_data( play, "app_lock", mlt_properties_get_data( properties, "app_lock", NULL ), 0, NULL, NULL );
- mlt_properties_set_data( still, "app_lock", mlt_properties_get_data( properties, "app_lock", NULL ), 0, NULL, NULL );
- mlt_properties_set_data( play, "app_unlock", mlt_properties_get_data( properties, "app_unlock", NULL ), 0, NULL, NULL );
- mlt_properties_set_data( still, "app_unlock", mlt_properties_get_data( properties, "app_unlock", NULL ), 0, NULL, NULL );
-
- mlt_properties_set_int( play, "put_mode", 1 );
- mlt_properties_set_int( still, "put_mode", 1 );
-
- // Start the still producer just to initialise the gui
- mlt_consumer_start( this->still );
- this->active = this->still;
-
- // Inform child consumers that we control the sdl
- mlt_properties_set_int( play, "sdl_started", 1 );
- mlt_properties_set_int( still, "sdl_started", 1 );
-
- pthread_create( &this->thread, NULL, consumer_thread, this );
- }
-
- return 0;
-}
-
-static int consumer_stop( mlt_consumer parent )
-{
- // Get the actual object
- consumer_sdl this = parent->child;
-
- if ( this->joined == 0 )
- {
- mlt_properties properties = MLT_CONSUMER_PROPERTIES( parent );
- int app_locked = mlt_properties_get_int( properties, "app_locked" );
- void ( *lock )( void ) = mlt_properties_get_data( properties, "app_lock", NULL );
- void ( *unlock )( void ) = mlt_properties_get_data( properties, "app_unlock", NULL );
-
- if ( app_locked && unlock ) unlock( );
-
- // Kill the thread and clean up
- this->running = 0;
-
- pthread_mutex_lock( &this->refresh_mutex );
- pthread_cond_broadcast( &this->refresh_cond );
- pthread_mutex_unlock( &this->refresh_mutex );
-
- pthread_join( this->thread, NULL );
- this->joined = 1;
-
- if ( app_locked && lock ) lock( );
-
- SDL_Quit( );
- }
-
- return 0;
-}
-
-static int consumer_is_stopped( mlt_consumer parent )
-{
- consumer_sdl this = parent->child;
- return !this->running;
-}
-
-static void *consumer_thread( void *arg )
-{
- // Identify the arg
- consumer_sdl this = arg;
-
- // Get the consumer
- mlt_consumer consumer = &this->parent;
-
- // Get the properties
- mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
-
- // internal intialization
- int first = 1;
- mlt_frame frame = NULL;
- int last_position = -1;
-
- // Determine if the application is dealing with the preview
- int preview_off = mlt_properties_get_int( properties, "preview_off" );
-
- this->refresh_count = 0;
-
- // Loop until told not to
- while( this->running )
- {
- // Get a frame from the attached producer
- frame = mlt_consumer_get_frame( consumer );
-
- // Ensure that we have a frame
- if ( this->running && frame != NULL )
- {
- // Get the speed of the frame
- double speed = mlt_properties_get_double( MLT_FRAME_PROPERTIES( frame ), "_speed" );
-
- // Lock during the operation
- mlt_service_lock( MLT_CONSUMER_SERVICE( consumer ) );
-
- // Get refresh request for the current frame
- int refresh = mlt_properties_get_int( properties, "refresh" );
-
- // Decrement refresh and clear changed
- mlt_events_block( properties, properties );
- mlt_properties_set_int( properties, "refresh", 0 );
- mlt_events_unblock( properties, properties );
-
- // Unlock after the operation
- mlt_service_unlock( MLT_CONSUMER_SERVICE( consumer ) );
-
- // Set the changed property on this frame for the benefit of still
- mlt_properties_set_int( MLT_FRAME_PROPERTIES( frame ), "refresh", refresh );
-
- // Make sure the recipient knows that this frame isn't really rendered
- mlt_properties_set_int( MLT_FRAME_PROPERTIES( frame ), "rendered", 0 );
-
- // Optimisation to reduce latency
- if ( speed == 1.0 )
- {
- if ( last_position != -1 && last_position + 1 != mlt_frame_get_position( frame ) )
- mlt_consumer_purge( this->play );
- last_position = mlt_frame_get_position( frame );
- }
- else
- {
- //mlt_consumer_purge( this->play );
- last_position = -1;
- }
-
- // If we're not the first frame and both consumers are stopped, then stop ourselves
- if ( !first && mlt_consumer_is_stopped( this->play ) && mlt_consumer_is_stopped( this->still ) )
- {
- this->running = 0;
- mlt_frame_close( frame );
- }
- // Allow a little grace time before switching consumers on speed changes
- else if ( this->ignore_change -- > 0 && this->active != NULL && !mlt_consumer_is_stopped( this->active ) )
- {
- mlt_consumer_put_frame( this->active, frame );
- }
- // If we aren't playing normally, then use the still
- else if ( speed != 1 )
- {
- if ( !mlt_consumer_is_stopped( this->play ) )
- mlt_consumer_stop( this->play );
- if ( mlt_consumer_is_stopped( this->still ) )
- {
- this->last_speed = speed;
- this->active = this->still;
- this->ignore_change = 0;
- mlt_consumer_start( this->still );
- }
- mlt_consumer_put_frame( this->still, frame );
- }
- // Otherwise use the normal player
- else
- {
- if ( !mlt_consumer_is_stopped( this->still ) )
- mlt_consumer_stop( this->still );
- if ( mlt_consumer_is_stopped( this->play ) )
- {
- this->last_speed = speed;
- this->active = this->play;
- this->ignore_change = 25;
- mlt_consumer_start( this->play );
- }
- mlt_consumer_put_frame( this->play, frame );
- }
-
- // Copy the rectangle info from the active consumer
- if ( this->running && preview_off == 0 )
- {
- mlt_properties active = MLT_CONSUMER_PROPERTIES( this->active );
- mlt_service_lock( MLT_CONSUMER_SERVICE( consumer ) );
- mlt_properties_set_int( properties, "rect_x", mlt_properties_get_int( active, "rect_x" ) );
- mlt_properties_set_int( properties, "rect_y", mlt_properties_get_int( active, "rect_y" ) );
- mlt_properties_set_int( properties, "rect_w", mlt_properties_get_int( active, "rect_w" ) );
- mlt_properties_set_int( properties, "rect_h", mlt_properties_get_int( active, "rect_h" ) );
- mlt_service_unlock( MLT_CONSUMER_SERVICE( consumer ) );
- }
-
- if ( this->active == this->still )
- {
- pthread_mutex_lock( &this->refresh_mutex );
- if ( this->running && speed == 0 && this->refresh_count <= 0 )
- pthread_cond_wait( &this->refresh_cond, &this->refresh_mutex );
- this->refresh_count --;
- pthread_mutex_unlock( &this->refresh_mutex );
- }
-
- // We are definitely not waiting on the first frame any more
- first = 0;
- }
- else
- {
- if ( frame ) mlt_frame_close( frame );
- mlt_consumer_put_frame( this->active, NULL );
- this->running = 0;
- }
- }
-
- if ( this->play ) mlt_consumer_stop( this->play );
- if ( this->still ) mlt_consumer_stop( this->still );
-
- return NULL;
-}
-
-/** Callback to allow override of the close method.
-*/
-
-static void consumer_close( mlt_consumer parent )
-{
- // Get the actual object
- consumer_sdl this = parent->child;
-
- // Stop the consumer
- mlt_consumer_stop( parent );
-
- // Close the child consumers
- mlt_consumer_close( this->play );
- mlt_consumer_close( this->still );
-
- // Now clean up the rest
- mlt_consumer_close( parent );
-
- // Finally clean up this
- free( this );
-}
projects / melted / blobdiff