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838 lines
23 KiB
838 lines
23 KiB
15 years ago
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/*
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* consumer_sdl.c -- A Simple DirectMedia Layer consumer
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* Copyright (C) 2003-2004 Ushodaya Enterprises Limited
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* Author: Dan Dennedy <dan@dennedy.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "consumer_sdl.h"
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#include <framework/mlt_frame.h>
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#include <framework/mlt_deque.h>
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#include <framework/mlt_factory.h>
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#include <framework/mlt_filter.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <pthread.h>
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#include <SDL/SDL.h>
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#include <SDL/SDL_syswm.h>
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#include <sys/time.h>
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/** This classes definition.
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*/
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typedef struct consumer_sdl_s *consumer_sdl;
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struct consumer_sdl_s
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{
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struct mlt_consumer_s parent;
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mlt_properties properties;
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mlt_deque queue;
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pthread_t thread;
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int joined;
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int running;
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uint8_t audio_buffer[ 4096 * 10 ];
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int audio_avail;
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pthread_mutex_t audio_mutex;
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pthread_cond_t audio_cond;
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pthread_mutex_t video_mutex;
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pthread_cond_t video_cond;
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int window_width;
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int window_height;
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int previous_width;
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int previous_height;
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int width;
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int height;
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int playing;
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int sdl_flags;
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SDL_Surface *sdl_screen;
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SDL_Overlay *sdl_overlay;
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SDL_Rect rect;
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uint8_t *buffer;
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int bpp;
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int filtered;
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};
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/** Forward references to static functions.
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*/
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static int consumer_start( mlt_consumer parent );
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static int consumer_stop( mlt_consumer parent );
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static int consumer_is_stopped( mlt_consumer parent );
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static void consumer_close( mlt_consumer parent );
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static void *consumer_thread( void * );
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static int consumer_get_dimensions( int *width, int *height );
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static void consumer_sdl_event( mlt_listener listener, mlt_properties owner, mlt_service this, void **args );
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/** This is what will be called by the factory - anything can be passed in
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via the argument, but keep it simple.
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*/
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mlt_consumer consumer_sdl_init( char *arg )
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{
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// Create the consumer object
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consumer_sdl this = calloc( sizeof( struct consumer_sdl_s ), 1 );
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// If no malloc'd and consumer init ok
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if ( this != NULL && mlt_consumer_init( &this->parent, this ) == 0 )
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{
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// Create the queue
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this->queue = mlt_deque_init( );
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// Get the parent consumer object
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mlt_consumer parent = &this->parent;
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// We have stuff to clean up, so override the close method
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parent->close = consumer_close;
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// get a handle on properties
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mlt_service service = MLT_CONSUMER_SERVICE( parent );
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this->properties = MLT_SERVICE_PROPERTIES( service );
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// Set the default volume
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mlt_properties_set_double( this->properties, "volume", 1.0 );
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// This is the initialisation of the consumer
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pthread_mutex_init( &this->audio_mutex, NULL );
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pthread_cond_init( &this->audio_cond, NULL);
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pthread_mutex_init( &this->video_mutex, NULL );
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pthread_cond_init( &this->video_cond, NULL);
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// Default scaler (for now we'll use nearest)
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mlt_properties_set( this->properties, "rescale", "nearest" );
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// Default buffer for low latency
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mlt_properties_set_int( this->properties, "buffer", 1 );
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// Default progressive true
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mlt_properties_set_int( this->properties, "progressive", 0 );
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// Default audio buffer
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mlt_properties_set_int( this->properties, "audio_buffer", 512 );
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// Ensure we don't join on a non-running object
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this->joined = 1;
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// process actual param
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if ( arg == NULL || sscanf( arg, "%dx%d", &this->width, &this->height ) != 2 )
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{
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this->width = mlt_properties_get_int( this->properties, "width" );
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this->height = mlt_properties_get_int( this->properties, "height" );
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}
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// Set the sdl flags
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this->sdl_flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL | SDL_RESIZABLE | SDL_DOUBLEBUF;
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// Allow thread to be started/stopped
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parent->start = consumer_start;
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parent->stop = consumer_stop;
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parent->is_stopped = consumer_is_stopped;
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// Register specific events
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mlt_events_register( this->properties, "consumer-sdl-event", ( mlt_transmitter )consumer_sdl_event );
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// Return the consumer produced
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return parent;
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}
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// malloc or consumer init failed
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free( this );
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// Indicate failure
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return NULL;
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}
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static void consumer_sdl_event( mlt_listener listener, mlt_properties owner, mlt_service this, void **args )
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{
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if ( listener != NULL )
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listener( owner, this, ( SDL_Event * )args[ 0 ] );
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}
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int consumer_start( mlt_consumer parent )
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{
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consumer_sdl this = parent->child;
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if ( !this->running )
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{
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int video_off = mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( parent ), "video_off" );
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int preview_off = mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( parent ), "preview_off" );
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int display_off = video_off | preview_off;
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int audio_off = mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( parent ), "audio_off" );
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int sdl_started = mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( parent ), "sdl_started" );
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consumer_stop( parent );
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this->running = 1;
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this->joined = 0;
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if ( mlt_properties_get_int( this->properties, "width" ) > 0 )
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this->width = mlt_properties_get_int( this->properties, "width" );
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if ( mlt_properties_get_int( this->properties, "height" ) > 0 )
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this->height = mlt_properties_get_int( this->properties, "height" );
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this->bpp = mlt_properties_get_int( this->properties, "bpp" );
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// Attach a colour space converter
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if ( preview_off && !this->filtered )
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{
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mlt_filter filter = mlt_factory_filter( "avcolour_space", NULL );
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mlt_properties_set_int( MLT_FILTER_PROPERTIES( filter ), "forced", mlt_image_yuv422 );
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mlt_service_attach( MLT_CONSUMER_SERVICE( parent ), filter );
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mlt_filter_close( filter );
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this->filtered = 1;
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}
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if ( sdl_started == 0 && display_off == 0 )
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{
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if ( SDL_Init( SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE ) < 0 )
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{
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fprintf( stderr, "Failed to initialize SDL: %s\n", SDL_GetError() );
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return -1;
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}
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SDL_EnableKeyRepeat( SDL_DEFAULT_REPEAT_DELAY, SDL_DEFAULT_REPEAT_INTERVAL );
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SDL_EnableUNICODE( 1 );
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}
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else if ( display_off == 0 )
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{
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this->sdl_screen = SDL_GetVideoSurface( );
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}
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if ( audio_off == 0 )
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SDL_InitSubSystem( SDL_INIT_AUDIO );
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// Default window size
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double display_ratio = mlt_properties_get_double( this->properties, "display_ratio" );
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this->window_width = ( double )this->height * display_ratio;
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this->window_height = this->height;
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if ( this->sdl_screen == NULL && display_off == 0 )
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this->sdl_screen = SDL_SetVideoMode( this->window_width, this->window_height, 0, this->sdl_flags );
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pthread_create( &this->thread, NULL, consumer_thread, this );
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}
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return 0;
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}
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int consumer_stop( mlt_consumer parent )
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{
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// Get the actual object
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consumer_sdl this = parent->child;
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if ( this->joined == 0 )
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{
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// Kill the thread and clean up
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this->joined = 1;
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this->running = 0;
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pthread_join( this->thread, NULL );
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// internal cleanup
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if ( this->sdl_overlay != NULL )
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SDL_FreeYUVOverlay( this->sdl_overlay );
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this->sdl_overlay = NULL;
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if ( !mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( parent ), "audio_off" ) )
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{
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pthread_mutex_lock( &this->audio_mutex );
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pthread_cond_broadcast( &this->audio_cond );
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pthread_mutex_unlock( &this->audio_mutex );
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SDL_QuitSubSystem( SDL_INIT_AUDIO );
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}
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if ( mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( parent ), "sdl_started" ) == 0 )
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SDL_Quit( );
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this->sdl_screen = NULL;
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}
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return 0;
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}
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int consumer_is_stopped( mlt_consumer parent )
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{
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consumer_sdl this = parent->child;
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return !this->running;
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}
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static int sdl_lock_display( )
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{
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SDL_Surface *screen = SDL_GetVideoSurface( );
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return screen != NULL && ( !SDL_MUSTLOCK( screen ) || SDL_LockSurface( screen ) >= 0 );
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}
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static void sdl_unlock_display( )
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{
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SDL_Surface *screen = SDL_GetVideoSurface( );
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if ( screen != NULL && SDL_MUSTLOCK( screen ) )
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SDL_UnlockSurface( screen );
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}
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static void sdl_fill_audio( void *udata, uint8_t *stream, int len )
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{
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consumer_sdl this = udata;
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// Get the volume
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double volume = mlt_properties_get_double( this->properties, "volume" );
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pthread_mutex_lock( &this->audio_mutex );
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// Block until audio received
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while ( this->running && len > this->audio_avail )
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pthread_cond_wait( &this->audio_cond, &this->audio_mutex );
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if ( this->audio_avail >= len )
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{
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// Place in the audio buffer
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if ( volume != 1.0 )
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SDL_MixAudio( stream, this->audio_buffer, len, ( int )( ( float )SDL_MIX_MAXVOLUME * volume ) );
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else
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memcpy( stream, this->audio_buffer, len );
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// Remove len from the audio available
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this->audio_avail -= len;
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// Remove the samples
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memmove( this->audio_buffer, this->audio_buffer + len, this->audio_avail );
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}
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else
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{
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// Just to be safe, wipe the stream first
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memset( stream, 0, len );
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// Mix the audio
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SDL_MixAudio( stream, this->audio_buffer, len, ( int )( ( float )SDL_MIX_MAXVOLUME * volume ) );
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// No audio left
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this->audio_avail = 0;
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}
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// We're definitely playing now
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this->playing = 1;
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pthread_cond_broadcast( &this->audio_cond );
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pthread_mutex_unlock( &this->audio_mutex );
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}
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static int consumer_play_audio( consumer_sdl this, mlt_frame frame, int init_audio, int *duration )
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{
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// Get the properties of this consumer
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mlt_properties properties = this->properties;
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mlt_audio_format afmt = mlt_audio_pcm;
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// Set the preferred params of the test card signal
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int channels = mlt_properties_get_int( properties, "channels" );
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int frequency = mlt_properties_get_int( properties, "frequency" );
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static int counter = 0;
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int samples = mlt_sample_calculator( mlt_properties_get_double( this->properties, "fps" ), frequency, counter++ );
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int16_t *pcm;
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int bytes;
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mlt_frame_get_audio( frame, &pcm, &afmt, &frequency, &channels, &samples );
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*duration = ( ( samples * 1000 ) / frequency );
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if ( mlt_properties_get_int( properties, "audio_off" ) )
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{
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this->playing = 1;
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init_audio = 1;
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return init_audio;
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}
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if ( init_audio == 1 )
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{
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SDL_AudioSpec request;
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SDL_AudioSpec got;
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int audio_buffer = mlt_properties_get_int( properties, "audio_buffer" );
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// specify audio format
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memset( &request, 0, sizeof( SDL_AudioSpec ) );
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this->playing = 0;
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request.freq = frequency;
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request.format = AUDIO_S16SYS;
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request.channels = channels;
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request.samples = audio_buffer;
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request.callback = sdl_fill_audio;
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request.userdata = (void *)this;
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if ( SDL_OpenAudio( &request, &got ) != 0 )
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{
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fprintf( stderr, "SDL failed to open audio: %s\n", SDL_GetError() );
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init_audio = 2;
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}
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else if ( got.size != 0 )
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{
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SDL_PauseAudio( 0 );
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init_audio = 0;
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}
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}
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if ( init_audio == 0 )
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{
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mlt_properties properties = MLT_FRAME_PROPERTIES( frame );
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bytes = ( samples * channels * 2 );
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pthread_mutex_lock( &this->audio_mutex );
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while ( this->running && bytes > ( sizeof( this->audio_buffer) - this->audio_avail ) )
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pthread_cond_wait( &this->audio_cond, &this->audio_mutex );
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if ( this->running )
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{
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if ( mlt_properties_get_double( properties, "_speed" ) == 1 )
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memcpy( &this->audio_buffer[ this->audio_avail ], pcm, bytes );
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else
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memset( &this->audio_buffer[ this->audio_avail ], 0, bytes );
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this->audio_avail += bytes;
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}
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pthread_cond_broadcast( &this->audio_cond );
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pthread_mutex_unlock( &this->audio_mutex );
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}
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else
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{
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this->playing = 1;
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}
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return init_audio;
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}
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static int consumer_play_video( consumer_sdl this, mlt_frame frame )
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{
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// Get the properties of this consumer
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mlt_properties properties = this->properties;
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mlt_image_format vfmt = mlt_image_yuv422;
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int width = this->width, height = this->height;
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uint8_t *image;
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int changed = 0;
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int video_off = mlt_properties_get_int( properties, "video_off" );
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int preview_off = mlt_properties_get_int( properties, "preview_off" );
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mlt_image_format preview_format = mlt_properties_get_int( properties, "preview_format" );
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int display_off = video_off | preview_off;
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if ( this->running && display_off == 0 )
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{
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// Get the image, width and height
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||
|
mlt_frame_get_image( frame, &image, &vfmt, &width, &height, 0 );
|
||
|
mlt_properties_set_int( MLT_FRAME_PROPERTIES( frame ), "format", vfmt );
|
||
|
mlt_events_fire( properties, "consumer-frame-show", frame, NULL );
|
||
|
|
||
|
// Handle events
|
||
|
if ( this->sdl_screen != NULL )
|
||
|
{
|
||
|
SDL_Event event;
|
||
|
|
||
|
sdl_lock_display( );
|
||
|
changed = consumer_get_dimensions( &this->window_width, &this->window_height );
|
||
|
sdl_unlock_display( );
|
||
|
|
||
|
while ( SDL_PollEvent( &event ) )
|
||
|
{
|
||
|
mlt_events_fire( this->properties, "consumer-sdl-event", &event, NULL );
|
||
|
|
||
|
switch( event.type )
|
||
|
{
|
||
|
case SDL_VIDEORESIZE:
|
||
|
this->window_width = event.resize.w;
|
||
|
this->window_height = event.resize.h;
|
||
|
changed = 1;
|
||
|
break;
|
||
|
case SDL_QUIT:
|
||
|
this->running = 0;
|
||
|
break;
|
||
|
case SDL_KEYDOWN:
|
||
|
{
|
||
|
mlt_producer producer = mlt_properties_get_data( properties, "transport_producer", NULL );
|
||
|
char keyboard[ 2 ] = " ";
|
||
|
void (*callback)( mlt_producer, char * ) = mlt_properties_get_data( properties, "transport_callback", NULL );
|
||
|
if ( callback != NULL && producer != NULL && event.key.keysym.unicode < 0x80 && event.key.keysym.unicode > 0 )
|
||
|
{
|
||
|
keyboard[ 0 ] = ( char )event.key.keysym.unicode;
|
||
|
callback( producer, keyboard );
|
||
|
}
|
||
|
}
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
sdl_lock_display();
|
||
|
|
||
|
if ( width != this->width || height != this->height )
|
||
|
{
|
||
|
if ( this->sdl_overlay != NULL )
|
||
|
SDL_FreeYUVOverlay( this->sdl_overlay );
|
||
|
this->sdl_overlay = NULL;
|
||
|
}
|
||
|
|
||
|
if ( this->running && ( this->sdl_screen == NULL || changed ) )
|
||
|
{
|
||
|
// Force an overlay recreation
|
||
|
if ( this->sdl_overlay != NULL )
|
||
|
SDL_FreeYUVOverlay( this->sdl_overlay );
|
||
|
this->sdl_overlay = NULL;
|
||
|
|
||
|
// open SDL window with video overlay, if possible
|
||
|
this->sdl_screen = SDL_SetVideoMode( this->window_width, this->window_height, this->bpp, this->sdl_flags );
|
||
|
if ( consumer_get_dimensions( &this->window_width, &this->window_height ) )
|
||
|
this->sdl_screen = SDL_SetVideoMode( this->window_width, this->window_height, this->bpp, this->sdl_flags );
|
||
|
}
|
||
|
|
||
|
if ( this->running )
|
||
|
{
|
||
|
// Determine window's new display aspect ratio
|
||
|
double this_aspect = ( double )this->window_width / this->window_height;
|
||
|
|
||
|
// Get the display aspect ratio
|
||
|
double display_ratio = mlt_properties_get_double( properties, "display_ratio" );
|
||
|
|
||
|
// Determine frame's display aspect ratio
|
||
|
double frame_aspect = mlt_frame_get_aspect_ratio( frame ) * width / height;
|
||
|
|
||
|
// Store the width and height received
|
||
|
this->width = width;
|
||
|
this->height = height;
|
||
|
|
||
|
// If using hardware scaler
|
||
|
if ( mlt_properties_get( properties, "rescale" ) != NULL &&
|
||
|
!strcmp( mlt_properties_get( properties, "rescale" ), "none" ) )
|
||
|
{
|
||
|
// Use hardware scaler to normalise display aspect ratio
|
||
|
this->rect.w = frame_aspect / this_aspect * this->window_width;
|
||
|
this->rect.h = this->window_height;
|
||
|
if ( this->rect.w > this->window_width )
|
||
|
{
|
||
|
this->rect.w = this->window_width;
|
||
|
this->rect.h = this_aspect / frame_aspect * this->window_height;
|
||
|
}
|
||
|
}
|
||
|
// Special case optimisation to negate odd effect of sample aspect ratio
|
||
|
// not corresponding exactly with image resolution.
|
||
|
else if ( (int)( this_aspect * 1000 ) == (int)( display_ratio * 1000 ) )
|
||
|
{
|
||
|
this->rect.w = this->window_width;
|
||
|
this->rect.h = this->window_height;
|
||
|
}
|
||
|
// Use hardware scaler to normalise sample aspect ratio
|
||
|
else if ( this->window_height * display_ratio > this->window_width )
|
||
|
{
|
||
|
this->rect.w = this->window_width;
|
||
|
this->rect.h = this->window_width / display_ratio;
|
||
|
}
|
||
|
else
|
||
|
{
|
||
|
this->rect.w = this->window_height * display_ratio;
|
||
|
this->rect.h = this->window_height;
|
||
|
}
|
||
|
|
||
|
this->rect.x = ( this->window_width - this->rect.w ) / 2;
|
||
|
this->rect.y = ( this->window_height - this->rect.h ) / 2;
|
||
|
this->rect.x -= this->rect.x % 2;
|
||
|
|
||
|
mlt_properties_set_int( this->properties, "rect_x", this->rect.x );
|
||
|
mlt_properties_set_int( this->properties, "rect_y", this->rect.y );
|
||
|
mlt_properties_set_int( this->properties, "rect_w", this->rect.w );
|
||
|
mlt_properties_set_int( this->properties, "rect_h", this->rect.h );
|
||
|
|
||
|
SDL_SetClipRect( this->sdl_screen, &this->rect );
|
||
|
}
|
||
|
|
||
|
if ( this->running && this->sdl_screen != NULL && this->sdl_overlay == NULL )
|
||
|
{
|
||
|
SDL_SetClipRect( this->sdl_screen, &this->rect );
|
||
|
this->sdl_overlay = SDL_CreateYUVOverlay( width, height, SDL_YUY2_OVERLAY, this->sdl_screen );
|
||
|
}
|
||
|
|
||
|
if ( this->running && this->sdl_screen != NULL && this->sdl_overlay != NULL )
|
||
|
{
|
||
|
this->buffer = this->sdl_overlay->pixels[ 0 ];
|
||
|
if ( SDL_LockYUVOverlay( this->sdl_overlay ) >= 0 )
|
||
|
{
|
||
|
if ( image != NULL )
|
||
|
memcpy( this->buffer, image, width * height * 2 );
|
||
|
SDL_UnlockYUVOverlay( this->sdl_overlay );
|
||
|
SDL_DisplayYUVOverlay( this->sdl_overlay, &this->sdl_screen->clip_rect );
|
||
|
}
|
||
|
}
|
||
|
|
||
|
sdl_unlock_display();
|
||
|
}
|
||
|
else if ( this->running )
|
||
|
{
|
||
|
vfmt = preview_format == mlt_image_none ? mlt_image_rgb24a : preview_format;
|
||
|
if ( !video_off )
|
||
|
mlt_frame_get_image( frame, &image, &vfmt, &width, &height, 0 );
|
||
|
mlt_properties_set_int( MLT_FRAME_PROPERTIES( frame ), "format", vfmt );
|
||
|
mlt_events_fire( properties, "consumer-frame-show", frame, NULL );
|
||
|
}
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static void *video_thread( void *arg )
|
||
|
{
|
||
|
// Identify the arg
|
||
|
consumer_sdl this = arg;
|
||
|
|
||
|
// Obtain time of thread start
|
||
|
struct timeval now;
|
||
|
int64_t start = 0;
|
||
|
int64_t elapsed = 0;
|
||
|
struct timespec tm;
|
||
|
mlt_frame next = NULL;
|
||
|
mlt_properties properties = NULL;
|
||
|
double speed = 0;
|
||
|
|
||
|
// Get real time flag
|
||
|
int real_time = mlt_properties_get_int( this->properties, "real_time" );
|
||
|
|
||
|
// Get the current time
|
||
|
gettimeofday( &now, NULL );
|
||
|
|
||
|
// Determine start time
|
||
|
start = ( int64_t )now.tv_sec * 1000000 + now.tv_usec;
|
||
|
|
||
|
while ( this->running )
|
||
|
{
|
||
|
// Pop the next frame
|
||
|
pthread_mutex_lock( &this->video_mutex );
|
||
|
next = mlt_deque_pop_front( this->queue );
|
||
|
while ( next == NULL && this->running )
|
||
|
{
|
||
|
pthread_cond_wait( &this->video_cond, &this->video_mutex );
|
||
|
next = mlt_deque_pop_front( this->queue );
|
||
|
}
|
||
|
pthread_mutex_unlock( &this->video_mutex );
|
||
|
|
||
|
if ( !this->running || next == NULL ) break;
|
||
|
|
||
|
// Get the properties
|
||
|
properties = MLT_FRAME_PROPERTIES( next );
|
||
|
|
||
|
// Get the speed of the frame
|
||
|
speed = mlt_properties_get_double( properties, "_speed" );
|
||
|
|
||
|
// Get the current time
|
||
|
gettimeofday( &now, NULL );
|
||
|
|
||
|
// Get the elapsed time
|
||
|
elapsed = ( ( int64_t )now.tv_sec * 1000000 + now.tv_usec ) - start;
|
||
|
|
||
|
// See if we have to delay the display of the current frame
|
||
|
if ( mlt_properties_get_int( properties, "rendered" ) == 1 && this->running )
|
||
|
{
|
||
|
// Obtain the scheduled playout time
|
||
|
int64_t scheduled = mlt_properties_get_int( properties, "playtime" );
|
||
|
|
||
|
// Determine the difference between the elapsed time and the scheduled playout time
|
||
|
int64_t difference = scheduled - elapsed;
|
||
|
|
||
|
// Smooth playback a bit
|
||
|
if ( real_time && ( difference > 20000 && speed == 1.0 ) )
|
||
|
{
|
||
|
tm.tv_sec = difference / 1000000;
|
||
|
tm.tv_nsec = ( difference % 1000000 ) * 500;
|
||
|
nanosleep( &tm, NULL );
|
||
|
}
|
||
|
|
||
|
// Show current frame if not too old
|
||
|
if ( !real_time || ( difference > -10000 || speed != 1.0 || mlt_deque_count( this->queue ) < 2 ) )
|
||
|
consumer_play_video( this, next );
|
||
|
|
||
|
// If the queue is empty, recalculate start to allow build up again
|
||
|
if ( real_time && ( mlt_deque_count( this->queue ) == 0 && speed == 1.0 ) )
|
||
|
{
|
||
|
gettimeofday( &now, NULL );
|
||
|
start = ( ( int64_t )now.tv_sec * 1000000 + now.tv_usec ) - scheduled + 20000;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
// This frame can now be closed
|
||
|
mlt_frame_close( next );
|
||
|
next = NULL;
|
||
|
}
|
||
|
|
||
|
if ( next != NULL )
|
||
|
mlt_frame_close( next );
|
||
|
|
||
|
mlt_consumer_stopped( &this->parent );
|
||
|
|
||
|
return NULL;
|
||
|
}
|
||
|
|
||
|
/** Threaded wrapper for pipe.
|
||
|
*/
|
||
|
|
||
|
static void *consumer_thread( void *arg )
|
||
|
{
|
||
|
// Identify the arg
|
||
|
consumer_sdl this = arg;
|
||
|
|
||
|
// Get the consumer
|
||
|
mlt_consumer consumer = &this->parent;
|
||
|
|
||
|
// Convenience functionality
|
||
|
int terminate_on_pause = mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( consumer ), "terminate_on_pause" );
|
||
|
int terminated = 0;
|
||
|
|
||
|
// Video thread
|
||
|
pthread_t thread;
|
||
|
|
||
|
// internal intialization
|
||
|
int init_audio = 1;
|
||
|
int init_video = 1;
|
||
|
mlt_frame frame = NULL;
|
||
|
mlt_properties properties = NULL;
|
||
|
int duration = 0;
|
||
|
int64_t playtime = 0;
|
||
|
struct timespec tm = { 0, 100000 };
|
||
|
|
||
|
// Loop until told not to
|
||
|
while( !terminated && this->running )
|
||
|
{
|
||
|
// Get a frame from the attached producer
|
||
|
frame = mlt_consumer_rt_frame( consumer );
|
||
|
|
||
|
// Check for termination
|
||
|
if ( terminate_on_pause && frame != NULL )
|
||
|
terminated = mlt_properties_get_double( MLT_FRAME_PROPERTIES( frame ), "_speed" ) == 0.0;
|
||
|
|
||
|
// Ensure that we have a frame
|
||
|
if ( frame != NULL )
|
||
|
{
|
||
|
// Get the frame properties
|
||
|
properties = MLT_FRAME_PROPERTIES( frame );
|
||
|
|
||
|
// Play audio
|
||
|
init_audio = consumer_play_audio( this, frame, init_audio, &duration );
|
||
|
|
||
|
// Determine the start time now
|
||
|
if ( this->playing && init_video )
|
||
|
{
|
||
|
// Create the video thread
|
||
|
pthread_create( &thread, NULL, video_thread, this );
|
||
|
|
||
|
// Video doesn't need to be initialised any more
|
||
|
init_video = 0;
|
||
|
}
|
||
|
|
||
|
// Set playtime for this frame
|
||
|
mlt_properties_set_int( properties, "playtime", playtime );
|
||
|
|
||
|
while ( this->running && mlt_deque_count( this->queue ) > 15 )
|
||
|
nanosleep( &tm, NULL );
|
||
|
|
||
|
// Push this frame to the back of the queue
|
||
|
pthread_mutex_lock( &this->video_mutex );
|
||
|
mlt_deque_push_back( this->queue, frame );
|
||
|
pthread_cond_broadcast( &this->video_cond );
|
||
|
pthread_mutex_unlock( &this->video_mutex );
|
||
|
|
||
|
// Calculate the next playtime
|
||
|
playtime += ( duration * 1000 );
|
||
|
}
|
||
|
}
|
||
|
|
||
|
this->running = 0;
|
||
|
|
||
|
// Kill the video thread
|
||
|
if ( init_video == 0 )
|
||
|
{
|
||
|
pthread_mutex_lock( &this->video_mutex );
|
||
|
pthread_cond_broadcast( &this->video_cond );
|
||
|
pthread_mutex_unlock( &this->video_mutex );
|
||
|
pthread_join( thread, NULL );
|
||
|
}
|
||
|
|
||
|
while( mlt_deque_count( this->queue ) )
|
||
|
mlt_frame_close( mlt_deque_pop_back( this->queue ) );
|
||
|
|
||
|
this->sdl_screen = NULL;
|
||
|
this->audio_avail = 0;
|
||
|
|
||
|
return NULL;
|
||
|
}
|
||
|
|
||
|
static int consumer_get_dimensions( int *width, int *height )
|
||
|
{
|
||
|
int changed = 0;
|
||
|
|
||
|
// SDL windows manager structure
|
||
|
SDL_SysWMinfo wm;
|
||
|
|
||
|
// Specify the SDL Version
|
||
|
SDL_VERSION( &wm.version );
|
||
|
|
||
|
// Lock the display
|
||
|
//sdl_lock_display();
|
||
|
|
||
|
#ifndef __DARWIN__
|
||
|
// Get the wm structure
|
||
|
if ( SDL_GetWMInfo( &wm ) == 1 )
|
||
|
{
|
||
|
// Check that we have the X11 wm
|
||
|
if ( wm.subsystem == SDL_SYSWM_X11 )
|
||
|
{
|
||
|
// Get the SDL window
|
||
|
Window window = wm.info.x11.window;
|
||
|
|
||
|
// Get the display session
|
||
|
Display *display = wm.info.x11.display;
|
||
|
|
||
|
// Get the window attributes
|
||
|
XWindowAttributes attr;
|
||
|
XGetWindowAttributes( display, window, &attr );
|
||
|
|
||
|
// Determine whether window has changed
|
||
|
changed = *width != attr.width || *height != attr.height;
|
||
|
|
||
|
// Return width and height
|
||
|
*width = attr.width;
|
||
|
*height = attr.height;
|
||
|
}
|
||
|
}
|
||
|
#endif
|
||
|
|
||
|
// Unlock the display
|
||
|
//sdl_unlock_display();
|
||
|
|
||
|
return changed;
|
||
|
}
|
||
|
|
||
|
/** 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 );
|
||
|
|
||
|
// Now clean up the rest
|
||
|
mlt_consumer_close( parent );
|
||
|
|
||
|
// Close the queue
|
||
|
mlt_deque_close( this->queue );
|
||
|
|
||
|
// Destroy mutexes
|
||
|
pthread_mutex_destroy( &this->audio_mutex );
|
||
|
pthread_cond_destroy( &this->audio_cond );
|
||
|
|
||
|
// Finally clean up this
|
||
|
free( this );
|
||
|
}
|