+++ /dev/null
-/*
- * consumer_sdl_still.c -- A Simple DirectMedia Layer consumer
- * Copyright (C) 2003-2004 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_deque.h>
-#include <framework/mlt_factory.h>
-#include <framework/mlt_filter.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <pthread.h>
-#include <SDL/SDL.h>
-#include <SDL/SDL_syswm.h>
-#include <sys/time.h>
-
-/** This classes definition.
-*/
-
-typedef struct consumer_sdl_s *consumer_sdl;
-
-struct consumer_sdl_s
-{
- struct mlt_consumer_s parent;
- mlt_properties properties;
- pthread_t thread;
- int joined;
- int running;
- int window_width;
- int window_height;
- int width;
- int height;
- int playing;
- int sdl_flags;
- SDL_Surface *sdl_screen;
- SDL_Rect rect;
- uint8_t *buffer;
- int last_position;
- mlt_producer last_producer;
- int filtered;
-};
-
-/** 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 int consumer_get_dimensions( int *width, int *height );
-static void consumer_sdl_event( mlt_listener listener, mlt_properties owner, mlt_service this, void **args );
-
-/** This is what will be called by the factory - anything can be passed in
- via the argument, but keep it simple.
-*/
-
-mlt_consumer consumer_sdl_still_init( mlt_profile profile, mlt_service_type type, const char *id, char *arg )
-{
- // Create the consumer object
- consumer_sdl this = calloc( sizeof( struct consumer_sdl_s ), 1 );
-
- // If no malloc'd and consumer init ok
- if ( this != NULL && mlt_consumer_init( &this->parent, this, profile ) == 0 )
- {
- // Get the parent consumer object
- mlt_consumer parent = &this->parent;
-
- // get a handle on properties
- mlt_service service = MLT_CONSUMER_SERVICE( parent );
- this->properties = MLT_SERVICE_PROPERTIES( service );
-
- // We have stuff to clean up, so override the close method
- parent->close = consumer_close;
-
- // Default scaler (for now we'll use nearest)
- mlt_properties_set( this->properties, "rescale", "nearest" );
-
- // We're always going to run this in non-realtime mode
- mlt_properties_set( this->properties, "real_time", "0" );
-
- // Default progressive true
- mlt_properties_set_int( this->properties, "progressive", 1 );
-
- // Ensure we don't join on a non-running object
- this->joined = 1;
-
- // process actual param
- if ( arg == NULL || sscanf( arg, "%dx%d", &this->width, &this->height ) != 2 )
- {
- this->width = mlt_properties_get_int( this->properties, "width" );
- this->height = mlt_properties_get_int( this->properties, "height" );
- }
- else
- {
- mlt_properties_set_int( this->properties, "width", this->width );
- mlt_properties_set_int( this->properties, "height", this->height );
- }
-
- // Set the sdl flags
- this->sdl_flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL | SDL_RESIZABLE | SDL_DOUBLEBUF;
-
- // Allow thread to be started/stopped
- parent->start = consumer_start;
- parent->stop = consumer_stop;
- parent->is_stopped = consumer_is_stopped;
-
- // Register specific events
- mlt_events_register( this->properties, "consumer-sdl-event", ( mlt_transmitter )consumer_sdl_event );
-
- // Return the consumer produced
- return parent;
- }
-
- // malloc or consumer init failed
- free( this );
-
- // Indicate failure
- return NULL;
-}
-
-static void consumer_sdl_event( mlt_listener listener, mlt_properties owner, mlt_service this, void **args )
-{
- if ( listener != NULL )
- listener( owner, this, ( SDL_Event * )args[ 0 ] );
-}
-
-static int consumer_start( mlt_consumer parent )
-{
- consumer_sdl this = parent->child;
-
- if ( !this->running )
- {
- int preview_off = mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( parent ), "preview_off" );
- int sdl_started = mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( parent ), "sdl_started" );
-
- // Attach a colour space converter
- if ( !this->filtered )
- {
- mlt_profile profile = mlt_service_profile( MLT_CONSUMER_SERVICE( parent ) );
- mlt_filter filter = mlt_factory_filter( profile, "avcolour_space", NULL );
- mlt_properties_set_int( MLT_FILTER_PROPERTIES( filter ), "forced", mlt_image_yuv422 );
- mlt_service_attach( MLT_CONSUMER_SERVICE( parent ), filter );
- mlt_filter_close( filter );
- this->filtered = 1;
- }
-
- consumer_stop( parent );
-
- this->last_position = -1;
- this->running = 1;
- this->joined = 0;
-
- // Allow the user to force resizing to window size
- this->width = mlt_properties_get_int( this->properties, "width" );
- this->height = mlt_properties_get_int( this->properties, "height" );
-
- // Default window size
- double display_ratio = mlt_properties_get_double( this->properties, "display_ratio" );
- this->window_width = ( double )this->height * display_ratio;
- this->window_height = this->height;
-
- if ( sdl_started == 0 && preview_off == 0 )
- {
- 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 );
- }
- else if ( preview_off == 0 )
- {
- if ( SDL_GetVideoSurface( ) != NULL )
- {
- this->sdl_screen = SDL_GetVideoSurface( );
- }
- }
-
- if ( this->sdl_screen == NULL && preview_off == 0 )
- this->sdl_screen = SDL_SetVideoMode( this->window_width, this->window_height, 0, this->sdl_flags );
-
- 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 )
- {
- int preview_off = mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( parent ), "preview_off" );
- int sdl_started = mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( parent ), "sdl_started" );
-
- // Kill the thread and clean up
- this->running = 0;
-
- pthread_join( this->thread, NULL );
- this->joined = 1;
-
- if ( sdl_started == 0 && preview_off == 0 )
- SDL_Quit( );
-
- this->sdl_screen = NULL;
- }
-
- return 0;
-}
-
-static int consumer_is_stopped( mlt_consumer parent )
-{
- consumer_sdl this = parent->child;
- return !this->running;
-}
-
-static int sdl_lock_display( )
-{
- SDL_Surface *screen = SDL_GetVideoSurface( );
- return screen != NULL && ( !SDL_MUSTLOCK( screen ) || SDL_LockSurface( screen ) >= 0 );
-}
-
-static void sdl_unlock_display( )
-{
- SDL_Surface *screen = SDL_GetVideoSurface( );
- if ( screen != NULL && SDL_MUSTLOCK( screen ) )
- SDL_UnlockSurface( screen );
-}
-
-static inline void display_1( SDL_Surface *screen, SDL_Rect rect, uint8_t *image, int width, int height )
-{
- // Generate the affine transform scaling values
- if ( rect.w == 0 || rect.h == 0 ) return;
- int scale_width = ( width << 16 ) / rect.w;
- int scale_height = ( height << 16 ) / rect.h;
- int stride = width * 3;
- int x, y, row_index;
- uint8_t *q, *row;
-
- // Constants defined for clarity and optimisation
- int scanlength = screen->pitch;
- uint8_t *start = ( uint8_t * )screen->pixels + rect.y * scanlength + rect.x;
- uint8_t *p;
-
- // Iterate through the screen using a very basic scaling algorithm
- for ( y = 0; y < rect.h; y ++ )
- {
- p = start;
- row_index = ( 32768 + scale_height * y ) >> 16;
- row = image + stride * row_index;
- for ( x = 0; x < rect.w; x ++ )
- {
- q = row + ( ( ( 32768 + scale_width * x ) >> 16 ) * 3 );
- *p ++ = SDL_MapRGB( screen->format, *q, *( q + 1 ), *( q + 2 ) );
- }
- start += scanlength;
- }
-}
-
-static inline void display_2( SDL_Surface *screen, SDL_Rect rect, uint8_t *image, int width, int height )
-{
- // Generate the affine transform scaling values
- if ( rect.w == 0 || rect.h == 0 ) return;
- int scale_width = ( width << 16 ) / rect.w;
- int scale_height = ( height << 16 ) / rect.h;
- int stride = width * 3;
- int x, y, row_index;
- uint8_t *q, *row;
-
- // Constants defined for clarity and optimisation
- int scanlength = screen->pitch / 2;
- uint16_t *start = ( uint16_t * )screen->pixels + rect.y * scanlength + rect.x;
- uint16_t *p;
-
- // Iterate through the screen using a very basic scaling algorithm
- for ( y = 0; y < rect.h; y ++ )
- {
- p = start;
- row_index = ( 32768 + scale_height * y ) >> 16;
- row = image + stride * row_index;
- for ( x = 0; x < rect.w; x ++ )
- {
- q = row + ( ( ( 32768 + scale_width * x ) >> 16 ) * 3 );
- *p ++ = SDL_MapRGB( screen->format, *q, *( q + 1 ), *( q + 2 ) );
- }
- start += scanlength;
- }
-}
-
-static inline void display_3( SDL_Surface *screen, SDL_Rect rect, uint8_t *image, int width, int height )
-{
- // Generate the affine transform scaling values
- if ( rect.w == 0 || rect.h == 0 ) return;
- int scale_width = ( width << 16 ) / rect.w;
- int scale_height = ( height << 16 ) / rect.h;
- int stride = width * 3;
- int x, y, row_index;
- uint8_t *q, *row;
-
- // Constants defined for clarity and optimisation
- int scanlength = screen->pitch;
- uint8_t *start = ( uint8_t * )screen->pixels + rect.y * scanlength + rect.x;
- uint8_t *p;
- uint32_t pixel;
-
- // Iterate through the screen using a very basic scaling algorithm
- for ( y = 0; y < rect.h; y ++ )
- {
- p = start;
- row_index = ( 32768 + scale_height * y ) >> 16;
- row = image + stride * row_index;
- for ( x = 0; x < rect.w; x ++ )
- {
- q = row + ( ( ( 32768 + scale_width * x ) >> 16 ) * 3 );
- pixel = SDL_MapRGB( screen->format, *q, *( q + 1 ), *( q + 2 ) );
- *p ++ = (pixel & 0xFF0000) >> 16;
- *p ++ = (pixel & 0x00FF00) >> 8;
- *p ++ = (pixel & 0x0000FF);
- }
- start += scanlength;
- }
-}
-
-static inline void display_4( SDL_Surface *screen, SDL_Rect rect, uint8_t *image, int width, int height )
-{
- // Generate the affine transform scaling values
- if ( rect.w == 0 || rect.h == 0 ) return;
- int scale_width = ( width << 16 ) / rect.w;
- int scale_height = ( height << 16 ) / rect.h;
- int stride = width * 3;
- int x, y, row_index;
- uint8_t *q, *row;
-
- // Constants defined for clarity and optimisation
- int scanlength = screen->pitch / 4;
- uint32_t *start = ( uint32_t * )screen->pixels + rect.y * scanlength + rect.x;
- uint32_t *p;
-
- // Iterate through the screen using a very basic scaling algorithm
- for ( y = 0; y < rect.h; y ++ )
- {
- p = start;
- row_index = ( 32768 + scale_height * y ) >> 16;
- row = image + stride * row_index;
- for ( x = 0; x < rect.w; x ++ )
- {
- q = row + ( ( ( 32768 + scale_width * x ) >> 16 ) * 3 );
- *p ++ = SDL_MapRGB( screen->format, *q, *( q + 1 ), *( q + 2 ) );
- }
- start += scanlength;
- }
-}
-
-static int consumer_play_video( consumer_sdl this, mlt_frame frame )
-{
- // Get the properties of this consumer
- mlt_properties properties = this->properties;
-
- mlt_image_format vfmt = mlt_image_rgb24;
- int height = this->height;
- int width = this->width;
- uint8_t *image = NULL;
- int changed = 0;
- double display_ratio = mlt_properties_get_double( this->properties, "display_ratio" );
-
- void ( *lock )( void ) = mlt_properties_get_data( properties, "app_lock", NULL );
- void ( *unlock )( void ) = mlt_properties_get_data( properties, "app_unlock", NULL );
-
- if ( lock != NULL ) lock( );
-
- sdl_lock_display();
-
- // Handle events
- if ( this->sdl_screen != NULL )
- {
- SDL_Event event;
-
- changed = consumer_get_dimensions( &this->window_width, &this->window_height );
-
- 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;
- }
- }
- }
-
- if ( this->sdl_screen == NULL || changed )
- {
- // open SDL window
- this->sdl_screen = SDL_SetVideoMode( this->window_width, this->window_height, 0, this->sdl_flags );
- if ( consumer_get_dimensions( &this->window_width, &this->window_height ) )
- this->sdl_screen = SDL_SetVideoMode( this->window_width, this->window_height, 0, this->sdl_flags );
- uint32_t color = mlt_properties_get_int( this->properties, "window_background" );
- SDL_FillRect( this->sdl_screen, NULL, color >> 8 );
- changed = 1;
- }
- else
- {
- changed = 1;
- }
-
- if ( changed == 0 &&
- this->last_position == mlt_frame_get_position( frame ) &&
- this->last_producer == mlt_properties_get_data( MLT_FRAME_PROPERTIES( frame ), "_producer", NULL ) )
- {
- sdl_unlock_display( );
- if ( unlock != NULL ) unlock( );
- return 0;
- }
-
- // Update last frame shown info
- this->last_position = mlt_frame_get_position( frame );
- this->last_producer = mlt_properties_get_data( MLT_FRAME_PROPERTIES( frame ), "_producer", NULL );
-
- // Get the image, width and height
- mlt_frame_get_image( frame, &image, &vfmt, &width, &height, 0 );
- mlt_events_fire( properties, "consumer-frame-show", frame, NULL );
-
- if ( image != NULL )
- {
- char *rescale = mlt_properties_get( properties, "rescale" );
- if ( rescale != NULL && strcmp( rescale, "none" ) )
- {
- double this_aspect = display_ratio / ( ( double )this->window_width / ( double )this->window_height );
- this->rect.w = 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 = ( 1.0 / this_aspect ) * this->window_height;
- }
- }
- else
- {
- double frame_aspect = mlt_frame_get_aspect_ratio( frame ) * width / height;
- this->rect.w = frame_aspect * this->window_height;
- this->rect.h = this->window_height;
- if ( this->rect.w > this->window_width )
- {
- this->rect.w = this->window_width;
- this->rect.h = ( 1.0 / frame_aspect ) * this->window_width;
- }
- }
-
- this->rect.x = ( this->window_width - this->rect.w ) / 2;
- this->rect.y = ( this->window_height - this->rect.h ) / 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 );
- }
-
- if ( !mlt_consumer_is_stopped( &this->parent ) && SDL_GetVideoSurface( ) != NULL && this->sdl_screen != NULL && this->sdl_screen->pixels != NULL )
- {
- switch( this->sdl_screen->format->BytesPerPixel )
- {
- case 1:
- display_1( this->sdl_screen, this->rect, image, width, height );
- break;
- case 2:
- display_2( this->sdl_screen, this->rect, image, width, height );
- break;
- case 3:
- display_3( this->sdl_screen, this->rect, image, width, height );
- break;
- case 4:
- display_4( this->sdl_screen, this->rect, image, width, height );
- break;
- default:
- fprintf( stderr, "Unsupported video depth %d\n", this->sdl_screen->format->BytesPerPixel );
- break;
- }
-
- // Flip it into sight
- SDL_Flip( this->sdl_screen );
- }
-
- sdl_unlock_display();
-
- if ( unlock != NULL ) unlock( );
-
- return 1;
-}
-
-/** 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;
- mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
-
- // internal intialization
- mlt_frame frame = NULL;
- mlt_image_format vfmt = mlt_image_rgb24a;
- int height = this->height;
- int width = this->width;
- uint8_t *image = NULL;
-
- // Allow the hosting app to provide the preview
- int preview_off = mlt_properties_get_int( properties, "preview_off" );
- mlt_image_format preview_format = mlt_properties_get_int( properties, "preview_format" );
-
- // Check if a specific colour space has been requested
- if ( preview_off && preview_format != mlt_image_none )
- vfmt = preview_format;
-
- // Loop until told not to
- while( this->running )
- {
- // Get a frame from the attached producer
- frame = mlt_consumer_rt_frame( consumer );
-
- // Ensure that we have a frame
- if ( this->running && frame != NULL )
- {
- if ( preview_off == 0 )
- {
- consumer_play_video( this, frame );
- }
- else
- {
- 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 );
- }
- mlt_frame_close( frame );
- }
- else
- {
- if ( frame ) mlt_frame_close( frame );
- this->running = 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 );
-
- // Get the wm structure
- if ( SDL_GetWMInfo( &wm ) == 1 )
- {
-#ifndef __DARWIN__
- // 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
- }
-
- 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 );
-
- // Finally clean up this
- free( this );
-}
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