#include "stdafx.h"
#include "openttd.h"
#include "gfx.h"
#include "variables.h"
#include "video/null.h"
#include "window.h"

static void* _null_video_mem = NULL;

static const char* NullVideoStart(const char* const* parm)
{
	_screen.width = _screen.pitch = _cur_resolution[0];
	_screen.height = _cur_resolution[1];
	_null_video_mem = malloc(_cur_resolution[0] * _cur_resolution[1]);
	return NULL;
}

static void NullVideoStop(void) { free(_null_video_mem); }

static void NullVideoMakeDirty(int left, int top, int width, int height) {}

static int NullVideoMainLoop(void)
{
	uint i;

	for (i = 0; i < 1000; i++) {
		GameLoop();
		_screen.dst_ptr = _null_video_mem;
		UpdateWindows();
	}

	return ML_QUIT;
}

static bool NullVideoChangeRes(int w, int h) { return false; }
static void NullVideoFullScreen(bool fs) {}

const HalVideoDriver _null_video_driver = {
	NullVideoStart,
	NullVideoStop,
	NullVideoMakeDirty,
	NullVideoMainLoop,
	NullVideoChangeRes,
	NullVideoFullScreen,
};