Method StoreSaveScreenData

Source/SysPSP/Graphics/GraphicsContext.cpp:579–685

//
//*****************************************************************************
void IGraphicsContext::StoreSaveScreenData()
{
	s32 bufferwidth;
	s32 pixelformat;
	s32 unknown = 0;

	void * buffer;
	char pngbuffer[128*1024];
	IO::Filename pngfile;

	extern std::string	gSaveStateFilename;
	sprintf( pngfile,"%s.png", gSaveStateFilename.c_str() );	//Add .png to filename

	u32		display_width = 0;
	u32		display_height= 0;

	u32		frame_width = 480;
	u32		frame_height= 272;

	// Not supported yet for tv out
	if ( PSP_TV_CABLE > 0 )
	{
		//TODO
		//frame_width = 720;
		//frame_height=  480;
		return;
	}

	ViewportType( &display_width, &display_height );
	#ifdef DAEDALUS_ENABLE_ASSERTS
	DAEDALUS_ASSERT( display_width != 0 && display_height != 0, "Unhandled viewport type" );
	#endif
	s32	x( (frame_width - display_width)/2 );
	s32	y( (frame_height - display_height)/2 );

	sceDisplayGetFrameBuf( &buffer, &bufferwidth, &pixelformat, unknown );

	ETextureFormat		texture_format;
	u32	bpp;
	u32 pitch;

	switch( pixelformat )
	{
	case PSP_DISPLAY_PIXEL_FORMAT_565:
		{
			texture_format = TexFmt_5650;
			bpp = 2;
			pitch = bufferwidth * bpp;
			buffer = reinterpret_cast< u8 * >( buffer ) + (y * pitch) + (x * bpp);

			//copy and reduce data to 1/4
			for(u32 ys=0; ys<display_height; ys +=2)
			{
				for(u32 xs=0; xs<display_width; xs +=2)
				{
					u32 pix = *(u16*)((u32)buffer + ys * pitch + xs * bpp);
					*(u16*)((u32)pngbuffer + (ys>>1) * (display_width>>1) * bpp + (xs>>1) * bpp) = pix;
				}