#include <stdio.h>
#include <X11/Xlib.h>
#include <vl_context.h>
#include <vl_surface.h>
#include <xsp_winsys.h>

static const unsigned short ycbcr16x16_420[8*8*6] =
{
	0x00A5,0x00A5,0x00A5,0x0072,0x00A5,0x0072,0x0072,0x0072,
	0x0072,0x00A5,0x0072,0x0072,0x00A5,0x0072,0x0072,0x0072,
	0x0072,0x00A5,0x0072,0x0072,0x00A5,0x00A5,0x0072,0x0072,
	0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,
	0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,
	0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,
	0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,
	0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,
	
	0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,
	0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,
	0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,
	0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,
	0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,
	0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,
	0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,
	0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,
	
	0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,
	0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,
	0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,
	0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,
	0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,
	0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,
	0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,
	0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,
	
	0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,
	0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,
	0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,
	0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,
	0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,0x00A5,
	0x0072,0x0072,0x0072,0x0072,0x0072,0x0072,0x00A5,0x00A5,
	0x0072,0x0072,0x0072,0x0072,0x0072,0x00A5,0x00A5,0x00A5,
	0x0072,0x0072,0x0072,0x0072,0x00A5,0x00A5,0x00A5,0x00A5,
	
	0x004F,0x004F,0x004F,0x00B2,0x00B2,0x00B2,0x00B2,0x00B2,
	0x00B2,0x00B2,0x004F,0x00B2,0x00B2,0x00B2,0x00B2,0x00B2,
	0x00B2,0x00B2,0x00B2,0x00B2,0x00B2,0x00B2,0x00B2,0x00B2,
	0x00B2,0x00B2,0x00B2,0x00B2,0x00B2,0x00B2,0x00B2,0x00B2,
	0x00B2,0x00B2,0x00B2,0x00B2,0x00B2,0x00B2,0x00B2,0x00B2,
	0x00B2,0x00B2,0x00B2,0x00B2,0x00B2,0x00B2,0x00B2,0x00B2,
	0x00B2,0x00B2,0x00B2,0x00B2,0x00B2,0x00B2,0x00B2,0x004F,
	0x00B2,0x00B2,0x00B2,0x00B2,0x00B2,0x00B2,0x004F,0x004F,
	
	0x003E,0x003E,0x003E,0x0060,0x0060,0x0060,0x0060,0x0060,
	0x0060,0x0060,0x003E,0x0060,0x0060,0x0060,0x0060,0x0060,
	0x0060,0x0060,0x0060,0x0060,0x0060,0x0060,0x0060,0x0060,
	0x0060,0x0060,0x0060,0x0060,0x0060,0x0060,0x0060,0x0060,
	0x0060,0x0060,0x0060,0x0060,0x0060,0x0060,0x0060,0x0060,
	0x0060,0x0060,0x0060,0x0060,0x0060,0x0060,0x0060,0x0060,
	0x0060,0x0060,0x0060,0x0060,0x0060,0x0060,0x0060,0x003E,
	0x0060,0x0060,0x0060,0x0060,0x0060,0x0060,0x003E,0x003E
};

static const signed short ycbcr16x16_420_2[8*8*6] =
{
	  0,  0,  0,  0,  0,  0,  0,  0,
	  0,  0,  0,  0,  0,  0,  0,  0,
	  0,  0,  0,  0,  0,  0,  0,  0,
	  0,  0,  0,  0,  0,  0,  0,  0,
	  0,  0,  0,  0,  0,  0,  0,  0,
	  0,  0,  0,  0,  0,  0,  0,  0,
	  0,  0,  0,  0,  0,  0,  0,  0,
	  0,  0,  0,  0,  0,  0,  0,  0,
	
	  0,  0,  0,  0,  0,  0,  0,  0,
	  0,  0,  0,  0,  0,  0,  0,  0,
	  0,  0,  0,  0,  0,  0,  0,  0,
	  0,  0,  0,  0,  0,  0,  0,  0,
	  0,  0,  0,  0,  0,  0,  0,  0,
	  0,  0,  0,  0,  0,  0,  0,  0,
	  0,  0,  0,  0,  0,  0,  0,  0,
	  0,  0,  0,  0,  0,  0,  0,  0,

	  0,  0,  0,  0,  0,  0,  0,  0,
	  0,  0,  0,  0,  0,  0,  0,  0,
	  0,  0,  0,  0,  0,  0,  0,  0,
	  0,  0,  0,  0,  0,  0,  0,  0,
	  0,  0,  0,  0,  0,  0,  0,  0,
	  0,  0,  0,  0,  0,  0,  0,  0,
	  0,  0,  0,  0,  0,  0,  0,  0,
	  0,  0,  0,  0,  0,  0,  0,  0,

	  0,  0,  0,  0,  0,  0,  0,  0,
	  0,  0,  0,  0,  0,  0,  0,  0,
	  0,  0,  0,  0,  0,  0,  0,  0,
	  0,  0,  0,  0,  0,  0,  0,  0,
	  0,  0,  0,  0,  0,  0,  0,  0,
	  0,  0,  0,  0,  0,  0,  0,  0,
	  0,  0,  0,  0,  0,  0,  0,  0,
	  0,  0,  0,  0,  0,  0,  0,  0,

	  0,  0,  0,  0,  0,  0,  0,  0,
	  0,  0,  0,  0,  0,  0,  0,  0,
	  0,  0,  0,  0,  0,  0,  0,  0,
	  0,  0,  0,  0,  0,  0,  0,  0,
	  0,  0,  0,  0,  0,  0,  0,  0,
	  0,  0,  0,  0,  0,  0,  0,  0,
	  0,  0,  0,  0,  0,  0,  0,  0,
	  0,  0,  0,  0,  0,  0,  0,  0,

	  0,  0,  0,  0,  0,  0,  0,  0,
	  0,  0,  0,  0,  0,  0,  0,  0,
	  0,  0,  0,  0,  0,  0,  0,  0,
	  0,  0,  0,  0,  0,  0,  0,  0,
	  0,  0,  0,  0,  0,  0,  0,  0,
	  0,  0,  0,  0,  0,  0,  0,  0,
	  0,  0,  0,  0,  0,  0,  0,  0,
	  0,  0,  0,  0,  0,  0,  0,  0
};

int main(int argc, char **argv)
{
	const unsigned int	video_width = 32, video_height = 32;
	const unsigned int	window_width = video_width * 2, window_height = video_height * 2;
	int			quit = 0;
	Display			*display;
	Window			root, window;
	Pixmap			framebuffer;
	XEvent			event;
	struct pipe_context	*pipe;
	struct VL_CONTEXT	*ctx;
	struct VL_SURFACE	*sfc, *ref_sfc;
	struct VL_MOTION_VECTOR	motion_vector =
	{
		{0, 0}, {32, 32}
	};
	
	display = XOpenDisplay(NULL);
	root = XDefaultRootWindow(display);
	window = XCreateSimpleWindow(display, root, 0, 0, window_width, window_height, 0, 0, 0);
	framebuffer = XCreatePixmap(display, root, window_width, window_height, 24);
	
	XSelectInput(display, window, ExposureMask | KeyPressMask);
	XMapWindow(display, window);
	XSync(display, 0);
	
	pipe = create_pipe_context(display);
	vlCreateContext(display, pipe, video_width, video_height, VL_FORMAT_YCBCR_420, &ctx);
	vlCreateSurface(ctx, &sfc);
	vlCreateSurface(ctx, &ref_sfc);
	
	vlRenderIMacroBlock(VL_FRAME_PICTURE, VL_FIELD_FIRST, 0, 0, 0x3F, VL_DCT_FRAME_CODED, (short*)ycbcr16x16_420, ref_sfc);
	vlRenderIMacroBlock(VL_FRAME_PICTURE, VL_FIELD_FIRST, 1, 0, 0x3F, VL_DCT_FRAME_CODED, (short*)ycbcr16x16_420, ref_sfc);
	vlRenderIMacroBlock(VL_FRAME_PICTURE, VL_FIELD_FIRST, 0, 1, 0x3F, VL_DCT_FRAME_CODED, (short*)ycbcr16x16_420, ref_sfc);
	vlRenderIMacroBlock(VL_FRAME_PICTURE, VL_FIELD_FIRST, 1, 1, 0x3F, VL_DCT_FRAME_CODED, (short*)ycbcr16x16_420, ref_sfc);
	vlRenderPMacroBlock
	(
		VL_FRAME_PICTURE,
		VL_FIELD_FIRST,
		0,
		0,
		VL_FIELD_MC,
		&motion_vector,
		0x3F,
		VL_DCT_FRAME_CODED,
		(short*)ycbcr16x16_420_2,
		ref_sfc,
		sfc
	);
	vlPutSurface(sfc, framebuffer, 0, 0, video_width, video_height, 0, 0, window_width, window_height, VL_FRAME_PICTURE);
	
	puts("Press any key to continue...");
	
	while (!quit)
	{
		XNextEvent(display, &event);
		switch (event.type)
		{
			case Expose:
			{
				XCopyArea
				(
					display,
					framebuffer,
					window,
					XDefaultGC(display, XDefaultScreen(display)),
					0,
					0,
					window_width,
					window_height,
					0,
					0
				);
				break;
			}
			case KeyPress:
			{
				quit = 1;
				break;
			}
		}
	}
	
	vlDestroySurface(sfc);
	vlDestroySurface(ref_sfc);
	vlDestroyContext(ctx);
	
	XFreePixmap(display, framebuffer);
	XDestroyWindow(display, window);
	XCloseDisplay(display);
	
	return 0;
}