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mangshe0

SDL play two video

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Hi I use SDL SMPEG, play two video. if ( SDL_Init(SDL_INIT_AUDIO|SDL_INIT_VIDEO) < 0 ) { printf("Unable to init SDL: %s\n", SDL_GetError()); return -1; } screen = SDL_SetVideoMode( 1024, 768, 32,SDL_HWSURFACE );//|SDL_FULLSCREEN if ( screen == NULL ) { printf("Unable to set 1024x768 video: %s\n", SDL_GetError()); return -1; } // Load the movie and store the information about it movie = SMPEG_new( "4.mpg", &moveInfo, true ); movie2 = SMPEG_new( "2.mpg", &moveInfo2, true ); char* error = SMPEG_error( movie ); if( error ) { printf( "Error loading MPEG: %s\n", error ); return -1; } char* error2 = SMPEG_error( movie2 ); if( error ) { printf( "Error loading MPEG: %s\n", error ); return -1; } but it show Error loading MPEG: Audio device is already opened if i donot write error2, when play first video is very slowly,and two video donot to play. How to play two video? thank you thank you very muuch

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code:

#include "SDL/sdl.h"
#include "SDL/smpeg.h"

#pragma comment( lib, "smpeg.lib")
//SDL.lib SDLmain.lib SDL_image.lib SDL_ttf.lib SDL_mixer.lib smpeg.lib
// Surface for the main screen
SDL_Surface *screen;

// Surface for the movie
SDL_Surface *movieSurface = 0;
SDL_Surface *movieSurface2 = 0;
SDL_Surface *movieSurface3 = 0;
// Holds the movie information
SMPEG_Info moveInfo;
SMPEG_Info moveInfo2;
SMPEG_Info moveInfo3;
// Load the movie
SMPEG *movie = 0;
SMPEG *movie2 = 0;
SMPEG *movie3 = 0;

void DrawIMG(SDL_Surface *img, int x, int y)
{
SDL_Rect dest;
dest.x = x;
dest.y = y;
SDL_BlitSurface(img, NULL, screen, &dest);
}



int main(int argc, char *argv[])
{
if ( SDL_Init(SDL_INIT_AUDIO|SDL_INIT_VIDEO) < 0 )
{
printf("Unable to init SDL: %s\n", SDL_GetError());
return -1;
}

screen = SDL_SetVideoMode( 1024, 768, 32, SDL_HWSURFACE );//|SDL_FULLSCREEN
if ( screen == NULL )
{
printf("Unable to set 640x480 video: %s\n", SDL_GetError());
return -1;
}

// Load the movie and store the information about it
movie = SMPEG_new( "4.mpg", &moveInfo, true );
movie2 = SMPEG_new( "2.mpg", &moveInfo2, true );
movie3 = SMPEG_new( "3.mpg", &moveInfo3, true );

char* error = SMPEG_error( movie );
if( error )
{
printf( "Error loading MPEG: %s\n", error );
return -1;
}
char* error2 = SMPEG_error( movie2 );
if( error )
{
printf( "Error loading MPEG: %s\n", error );
return -1;
}

// Create a temporary surface to render the movie to
SDL_Surface *tempSurface2 = SDL_CreateRGBSurface( SDL_SWSURFACE, moveInfo.width, moveInfo.height, 32,
screen->format->Rmask, screen->format->Gmask, screen->format->Bmask, screen->format->Amask );
//Rmask Gmask Bmask RGB 红绿蓝 Amask alpha 透明度
SDL_Surface *tempSurface3 = SDL_CreateRGBSurface( SDL_SWSURFACE, moveInfo2.width, moveInfo2.height, 32,
screen->format->Rmask, screen->format->Gmask, screen->format->Bmask, screen->format->Amask );
SDL_Surface *tempSurface4 = SDL_CreateRGBSurface( SDL_SWSURFACE, moveInfo3.width, moveInfo3.height, 32,
screen->format->Rmask, screen->format->Gmask, screen->format->Bmask, screen->format->Amask );
// SDL_BlitSurface(tempSurface2, NULL, screen, &dest); //位块移动 将源的内存块 移动到目标位置 前2个参数是源 后2是目标
// Now make a surface optimized for the main screen
movieSurface = SDL_DisplayFormat( tempSurface2 );
movieSurface2 = SDL_DisplayFormat( tempSurface3 );
movieSurface3 = SDL_DisplayFormat( tempSurface4 );
// SDL_BlitSurface(movieSurface, &dest2, screen, &dest); //位块移动 将源的内存块 移动到目标位置 前2个参数是源 后2是目标

//Free the temporary surface
SDL_FreeSurface( tempSurface2 );
SDL_FreeSurface( tempSurface3 );
SDL_FreeSurface( tempSurface4 );

// Set the surface to draw to
SMPEG_setdisplay( movie, movieSurface, 0, 0 ); // screen movieSurface
SMPEG_setdisplay( movie2, movieSurface2, 0, 0 );
SMPEG_setdisplay( movie3, movieSurface3, 0, 0 );

// Set the display region
SMPEG_setdisplayregion( movie, 0, 0,moveInfo.width, moveInfo.height);
SMPEG_setdisplayregion( movie2, 0, 0,moveInfo2.width, moveInfo2.height);
SMPEG_setdisplayregion( movie3, 0, 0,moveInfo3.width, moveInfo3.height);

//s SMPEG_move(movie,50,50);
// DrawIMG(movieSurface,100,100);

// SDL_BlitSurface(movieSurface, NULL, screen, &dest); //位块移动 将源的内存块 移动到目标位置 前2个参数是源 后2是目标

// Loop forever renderFrame
SMPEG_loop( movie, -1 );
SMPEG_loop( movie2, -1 );
SMPEG_loop( movie3, -1 );

SDL_ShowCursor(SDL_DISABLE);

int done=0;

while(done == 0)
{
SDL_Event event;

while ( SDL_PollEvent(&event) )
{
if ( event.type == SDL_QUIT ) { done = 1; }

if ( event.type == SDL_KEYDOWN )
{
if ( event.key.keysym.sym == SDLK_ESCAPE ) { done = 1; }
}
}

// Play the movie
SMPEG_play( movie );
SMPEG_play( movie2 );
SMPEG_play( movie3 );
// SMPEG_move(movie,50,50);
// Draw the movie surface to the main screen at 0,0
DrawIMG( movieSurface, 0, 0 ); //能够移动movieSurface框架
DrawIMG( movieSurface2, 450, 150 ); //能够移动movieSurface框架
DrawIMG( movieSurface3, 600, 500 ); //能够移动movieSurface框架

// Flip the main screen
SDL_Flip( screen );
}

SDL_FreeSurface(movieSurface);
SDL_FreeSurface(movieSurface2);
SDL_FreeSurface(movieSurface3);
// SDL_FreeSurface( tempSurface2 );
SMPEG_stop(movie);
SMPEG_stop(movie2);
SMPEG_stop(movie3);
SMPEG_delete(movie);
SMPEG_delete(movie2);
SMPEG_delete(movie3);
movie = NULL;
movie2 = NULL;
movie3 = NULL;
SDL_ShowCursor(SDL_ENABLE);

// printf( "MPEG with and height: %s\n", moveInfo.width, moveInfo.height );
return 0;
}


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if SDL SMPEG can not achieve, please tell me,let me Give up hope.
thank you.
beacuse DriectXShow can play two video.

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