Example05_VideoPlayer.cpp

/*--------------------------------------------
   Examples - CRM32Pro SDK - Roberto Prieto
   Copyright (C) 2001-2011 MegaStorm Systems
  --------------------------------------------

  Example 5: video player
  -----------------------
  - Initialize SDL and CRM32Pro.
  - Printing help on console.
  - Use of log system.
  - Initialize graphics: window icon, video mode and cursor.
  - Play a MPEG-I(video & audio stream) until the end or ESC/s key are pressed.
  - Show FX effects on video playback (using cursor keys: <- and ->)
  - Exiting using the right way ;)

  This example is totally free and can be used without 
any restriction but there is not any warranty for its usage.
Please, do not forget to include a copy of all the library licenses
located at /licenses directory if you distribute or share it.

Roberto Prieto
contact@megastormsystems.com
http://www.megastormsystems.com
*/

// ---Includes---
#include "CRM32Pro.h"

// ---Defines---
#define EXAMPLE_VERSION "Example 5: Video player"
#define GFX_RESOURCE "data/gfx.dpf"     // DPF with graphic resources

// ---Prototypes---
int ChangeFX(int kPressed,SDL_Surface *sFrame,SDL_Rect *rDst);
void PrintHelp(char *sErrMsg = NULL);

// -------------MAIN FUNCTION----------------
int main(int argc,char *argv[])
{
    Uint8 done = 0;

    // -Log system initialize-  
    ILogSystem.Init("VideoPlayer.log",LOG_CONSOLE | LOG_FILE,LOG_NORMAL,EXAMPLE_VERSION);

    // -Print help without any arguments-
    if(argc < 2) 
    {
        PrintHelp();
        ILogSystem.Msg(LOG_LOW," · [LOG] - We need the .mpg video to play, try with \"VideoPlayer.exe your.mpg\"\n\n");
        return 1;
    }

    // -CRM32Pro and SDL initialize- 
    if(CRM32Pro.Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER) < 0)
    {
        ILogSystem.Msg(LOG_NORMAL," · [LOG] - Couldn´t initialize CRM32Pro: %s\n",SDL_GetError());
        return 1;
    }

    // -Desired config-
    CRM32Pro.Config.Title = EXAMPLE_VERSION;
    CRM32Pro.Config.Icon = IImage->Load(GFX_RESOURCE,"icono");
    // Uncoment below two lines to use OpenGL renderer.
    // By the way, it is not a good idea as each frame must be converted into a texture which is an intensive task
    //CRM32Pro.Config.VideoRenderer = RENDER_OPENGL;
    //CRM32Pro.Config.VideoAccel = ACCEL_HARDSMOOTH ;

    // -Graphics system initialize-  
    if(!CRM32Pro.SetVideoMode())
    {
        CRM32Pro.Quit();
        return 1;
    }

    // -Play MPEG- 
    IVideo->SetPosition(VIDEO_PLAY_CENTER,VIDEO_PLAY_CENTER);
    IVideo->SetFunction(ChangeFX);
    IVideo->PlayMPEG(argv[1],1);

    // -Exiting..-
    ILogSystem.Msg(LOG_NORMAL,"\n · [INFO]: end of execution.\n");
    CRM32Pro.VideoInfo();
    CRM32Pro.Quit();
    return 0;
}

// Function to be called when a MPEG frame will be updated.
int ChangeFX(int kPressed,SDL_Surface *sFrame,SDL_Rect *rDst)
{
    static int  fx = FXSCREEN_NULL;
    if(kPressed == SDLK_LEFT)
    {
        if(fx > 0) fx--;
        IVideo->SetFX(fx);
    }
    else if(kPressed == SDLK_RIGHT)
    {
        if(fx < FXSCREEN_BLUE) fx++;
        IVideo->SetFX(fx);
    }

    else if(kPressed == SDLK_s) // With "S" key, return 0 to stop the playback
    {
        return 0;
    }

    // With OpenGL video modes, we have to blit the frame on the screen
    if(CRM32Pro.IsGL()) SDL_BlitSurface(sFrame,NULL,CRM32Pro.screen,rDst);

    return 1;
}

// --------------------Help STUFF------------------------
// -Print help-
void PrintHelp(char *sErrMsg)
{
    printf("-----------------------------------------------------------\n");
    printf("                 CRM32Pro SDK - HelpScreen\n                  %s\n",EXAMPLE_VERSION);
    printf("-----------------------------------------------------------\n\n");
    printf(" Use:\n");
    printf("   -  'VideoPlayer your_video.mpg' to play the video.\n\n");
    printf(" During the playback, you can use next keys:\n");
    printf(" [ESCAPE] to abort and exit.\n");
    printf(" [RIGHT CURSOR] to select the next FX effect.\n");
    printf(" [LEFT CURSOR] to select the previous FX effect.\n");
    if(sErrMsg != NULL) printf("%s",sErrMsg);
    else printf("\n");
    puts("Press [ENTER] key to continue.");
    getchar();
}