#include "sysconfig.h"
#include "sysdeps.h"
#include "config.h"
#include "uae.h"
#include "options.h"
#include "gui.h"
#include "memory.h"
#include "newcpu.h"
#include "inputdevice.h"
#include "custom.h"
#include "xwin.h"
#include "drawing.h"
#include "savestate.h"
#include "picasso96.h"

#include <png.h>
#include <SDL.h>
#include <SDL_image.h>
#include <SDL_gfxPrimitives.h>
#ifdef ANDROIDSDL
#include <android/log.h>
#endif
#include "threaddep/thread.h"
#include "bcm_host.h"


/* SDL surface variable for output of emulation */
SDL_Surface *prSDLScreen = NULL;
/* Dummy SDL variable for screen init */
SDL_Surface *Dummy_prSDLScreen = NULL;
static SDL_Surface *current_screenshot = NULL;
/* Possible screen modes (x and y resolutions) */

#define MAX_SCREEN_MODES 11
static int x_size_table[MAX_SCREEN_MODES] = { 640, 640, 720, 800, 800, 960, 1024, 1280, 1280, 1680, 1920 };
static int y_size_table[MAX_SCREEN_MODES] = { 400, 480, 400, 480, 600, 540, 768, 720, 800, 1050, 1080 };

struct PicassoResolution *DisplayModes;
struct MultiDisplay Displays[MAX_DISPLAYS];

int screen_is_picasso = 0;

static int curr_layer_width = 0;

static char screenshot_filename_default[255] =  {
	'/',
	't',
	'm',
	'p',
	'/',
	'n',
	'u',
	'l',
	'l',
	'.',
	'p',
	'n',
	'g',
	'\0'
};
char *screenshot_filename = (char *)&screenshot_filename_default[0];
FILE *screenshot_file = NULL;
static void CreateScreenshot(void);
static int save_thumb(char *path);
int delay_savestate_frame = 0;

int DispManXElementpresent = 0;

static long next_synctime = 0;

uae_sem_t vsync_wait_sem;


DISPMANX_DISPLAY_HANDLE_T   dispmanxdisplay;
DISPMANX_MODEINFO_T         dispmanxdinfo;
DISPMANX_RESOURCE_HANDLE_T  dispmanxresource_amigafb_1;
DISPMANX_RESOURCE_HANDLE_T  dispmanxresource_amigafb_2;
DISPMANX_ELEMENT_HANDLE_T   dispmanxelement;
DISPMANX_UPDATE_HANDLE_T    dispmanxupdate;
VC_RECT_T       src_rect;
VC_RECT_T       dst_rect;
VC_RECT_T       blit_rect;

unsigned char current_resource_amigafb = 0;

unsigned char need_wait_dispmanx_semaphore = 0;
long start;


void vsync_callback(unsigned int a, void* b)
{
  // Here we are synchronized with VSync
  // next_synctime is what we were expected as sync time.
	last_synctime = read_processor_time();
	// Check if we miss a frame (with a margin of 1000 cycles)
	if (last_synctime - next_synctime > time_per_frame * (1 + currprefs.gfx_framerate) - (long)1000)
		adjust_idletime(-1);
	else
		adjust_idletime(last_synctime - start);
	  // Update next synctime with current sync.
	next_synctime = last_synctime + time_per_frame * (1 + currprefs.gfx_framerate);

	uae_sem_post(&vsync_wait_sem);
}


int graphics_setup(void)
{
#ifdef PICASSO96
	picasso_InitResolutions();
	InitPicasso96();
#endif
	bcm_host_init();
	return 1;
}


void InitAmigaVidMode(struct uae_prefs *p)
{
  /* Initialize structure for Amiga video modes */
	gfxvidinfo.pixbytes = 2;
	gfxvidinfo.bufmem = (uae_u8 *)prSDLScreen->pixels;
	gfxvidinfo.outwidth = p->gfx_size.width;
	gfxvidinfo.outheight = p->gfx_size.height;
	gfxvidinfo.rowbytes = prSDLScreen->pitch;
#ifdef PICASSO96
	if (screen_is_picasso)
	{
		gfxvidinfo.outwidth  = picasso_vidinfo.width;
		gfxvidinfo.outheight = picasso_vidinfo.height;
	}
#endif
}

void graphics_dispmanshutdown(void)
{
	if (DispManXElementpresent == 1)
	{
		DispManXElementpresent = 0;
		dispmanxupdate = vc_dispmanx_update_start(0);
		vc_dispmanx_element_remove(dispmanxupdate, dispmanxelement);
		vc_dispmanx_update_submit_sync(dispmanxupdate);
	}
}

void graphics_subshutdown(void)
{
	if (dispmanxresource_amigafb_1 != 0)
		graphics_dispmanshutdown();
}

static void open_screen(struct uae_prefs *p)
{
	VC_DISPMANX_ALPHA_T alpha = {
		(DISPMANX_FLAGS_ALPHA_T)(DISPMANX_FLAGS_ALPHA_FROM_SOURCE | DISPMANX_FLAGS_ALPHA_FIXED_ALL_PIXELS), 
		255, /*alpha 0->255*/
		0
	};

	uint32_t     vc_image_ptr;
	int          width;
	int          height;
	
#ifdef PICASSO96
	if (screen_is_picasso)
	{
		width  = picasso_vidinfo.width;
		height = picasso_vidinfo.height;
	}
	else
#endif
	{
		p->gfx_resolution = p->gfx_size.width > 600 ? 1 : 0;
		width  = p->gfx_size.width;
		height = p->gfx_size.height;
	}

	if (Dummy_prSDLScreen)
	{ // y.f. 2016-10-13 : free the previous screen surface every time, 
	  // so we can have fullscreen while running and windowed while in config window.
	 // Apparently, something somewhere is resetting the screen.
		SDL_FreeSurface(Dummy_prSDLScreen);
		Dummy_prSDLScreen = NULL;
	}
	
	if (Dummy_prSDLScreen == NULL)
	{
//		Dummy_prSDLScreen = SDL_SetVideoMode(videoInfo->current_w, videoInfo->current_h, videoInfo->vfmt->BitsPerPixel, SDL_SWSURFACE | SDL_FULLSCREEN);
		Dummy_prSDLScreen = SDL_SetVideoMode(width, height, 16, SDL_SWSURFACE | SDL_FULLSCREEN);
	}

	  // check if resolution hasn't changed in menu. Otherwise free the resources so that they will be re-generated with new resolution.
	if ((dispmanxresource_amigafb_1 != 0) && 
	   ((blit_rect.width != width) || (blit_rect.height != height) || (currprefs.gfx_correct_aspect != changed_prefs.gfx_correct_aspect) ||
	   (currprefs.gfx_fullscreen_ratio != changed_prefs.gfx_fullscreen_ratio)))
	{
#ifdef DEBUG
		printf("Emulation resolution change detected.\n");
#endif // DEBUG
		if (prSDLScreen != NULL)
		{
			SDL_FreeSurface(prSDLScreen);
			prSDLScreen = 0;
		}
		graphics_dispmanshutdown();
		vc_dispmanx_resource_delete(dispmanxresource_amigafb_1);
		vc_dispmanx_resource_delete(dispmanxresource_amigafb_2);
		dispmanxresource_amigafb_1 = 0;
		dispmanxresource_amigafb_2 = 0;
	}

	if (dispmanxresource_amigafb_1 == 0)
	{
#ifdef DEBUG
		printf("Emulation resolution: Width %i Height: %i\n", width, height);
#endif //DEBUG
		currprefs.gfx_correct_aspect = changed_prefs.gfx_correct_aspect;
		currprefs.gfx_fullscreen_ratio = changed_prefs.gfx_fullscreen_ratio;
		prSDLScreen = SDL_CreateRGBSurface(SDL_SWSURFACE,
			width,
			height,
			16,
			Dummy_prSDLScreen->format->Rmask,
			Dummy_prSDLScreen->format->Gmask,
			Dummy_prSDLScreen->format->Bmask,
			Dummy_prSDLScreen->format->Amask);

		dispmanxdisplay = vc_dispmanx_display_open(0);
		vc_dispmanx_display_get_info(dispmanxdisplay, &dispmanxdinfo);

		dispmanxresource_amigafb_1 = vc_dispmanx_resource_create(VC_IMAGE_RGB565, width, height, &vc_image_ptr);
		dispmanxresource_amigafb_2 = vc_dispmanx_resource_create(VC_IMAGE_RGB565, width, height, &vc_image_ptr);
		vc_dispmanx_rect_set(&blit_rect, 0, 0, width, height);
		vc_dispmanx_resource_write_data(dispmanxresource_amigafb_1,
			VC_IMAGE_RGB565,
			width *2,
			prSDLScreen->pixels,
			&blit_rect);
		vc_dispmanx_rect_set(&src_rect, 0, 0, width << 16, height << 16);

	}
	// 16/9 to 4/3 ratio adaptation.
	if (currprefs.gfx_correct_aspect == 0)
	{
	  // Fullscreen.
		int scaled_width = dispmanxdinfo.width * currprefs.gfx_fullscreen_ratio / 100;
		int scaled_height = dispmanxdinfo.height * currprefs.gfx_fullscreen_ratio / 100;
		vc_dispmanx_rect_set( &dst_rect,
			(dispmanxdinfo.width - scaled_width)/2,
			(dispmanxdinfo.height - scaled_height)/2,
			scaled_width,
			scaled_height);
	}
	else
	{
	  // 4/3 shrink.
		int scaled_width = dispmanxdinfo.width * currprefs.gfx_fullscreen_ratio / 100;
		int scaled_height = dispmanxdinfo.height * currprefs.gfx_fullscreen_ratio / 100;
		vc_dispmanx_rect_set( &dst_rect,
			(dispmanxdinfo.width - scaled_width / 16 * 12)/2,
			(dispmanxdinfo.height - scaled_height)/2,
			scaled_width/16*12,
			scaled_height);
	}

	if (DispManXElementpresent == 0)
	{
		DispManXElementpresent = 1;
		dispmanxupdate = vc_dispmanx_update_start(0);
		dispmanxelement = vc_dispmanx_element_add( dispmanxupdate,
			dispmanxdisplay,
			2,               // layer
			&dst_rect,
			dispmanxresource_amigafb_1,
			&src_rect,
			DISPMANX_PROTECTION_NONE,
			&alpha,
			NULL,             // clamp
			DISPMANX_NO_ROTATE);

		vc_dispmanx_update_submit(dispmanxupdate, NULL, NULL);
	}

	if (prSDLScreen != NULL)
	{
		InitAmigaVidMode(p);
		init_row_map();
	}    
	//framecnt = 1; // Don't draw frame before reset done
}


void update_display(struct uae_prefs *p)
{
	open_screen(p);
    
	SDL_ShowCursor(SDL_DISABLE);

	framecnt = 1; // Don't draw frame before reset done
}


int check_prefs_changed_gfx(void)
{
	int changed = 0;
  
	if (currprefs.gfx_size.height != changed_prefs.gfx_size.height ||
	   currprefs.gfx_size.width != changed_prefs.gfx_size.width ||
	   currprefs.gfx_size_fs.width != changed_prefs.gfx_size_fs.width ||
	   currprefs.gfx_resolution != changed_prefs.gfx_resolution)
	{
		cfgfile_configuration_change(1);
		currprefs.gfx_size.height = changed_prefs.gfx_size.height;
		currprefs.gfx_size.width = changed_prefs.gfx_size.width;
		currprefs.gfx_size_fs.width = changed_prefs.gfx_size_fs.width;
		currprefs.gfx_resolution = changed_prefs.gfx_resolution;
		update_display(&currprefs);
		changed = 1;
	}
	if (currprefs.leds_on_screen != changed_prefs.leds_on_screen ||
	    currprefs.pandora_hide_idle_led != changed_prefs.pandora_hide_idle_led ||
	    currprefs.pandora_vertical_offset != changed_prefs.pandora_vertical_offset)	
	{
		currprefs.leds_on_screen = changed_prefs.leds_on_screen;
		currprefs.pandora_hide_idle_led = changed_prefs.pandora_hide_idle_led;
		currprefs.pandora_vertical_offset = changed_prefs.pandora_vertical_offset;
		changed = 1;
	}
	if (currprefs.chipset_refreshrate != changed_prefs.chipset_refreshrate) 
	{
		currprefs.chipset_refreshrate = changed_prefs.chipset_refreshrate;
		init_hz_full();
		changed = 1;
	}
  
	return changed;
}


int lockscr(void)
{
    //SDL_LockSurface(prSDLScreen);
	return 1;
}


void unlockscr(void)
{
    //SDL_UnlockSurface(prSDLScreen);
}

void wait_for_vsync(void)
{
  // Temporary
}


void flush_screen()
{
	if (savestate_state == STATE_DOSAVE)
	{
		if (delay_savestate_frame > 0)
			--delay_savestate_frame;
		else
		{
			CreateScreenshot();
			save_thumb(screenshot_filename);
			savestate_state = 0;
		}
	}

	if (need_wait_dispmanx_semaphore == 1)
	{
		need_wait_dispmanx_semaphore = 0;
		start = read_processor_time();
		uae_sem_wait(&vsync_wait_sem);
	}


	if (current_resource_amigafb == 1)
	{
		current_resource_amigafb = 0;
		vc_dispmanx_resource_write_data(  dispmanxresource_amigafb_1,
			VC_IMAGE_RGB565,
			gfxvidinfo.outwidth * 2,
			gfxvidinfo.bufmem,
			&blit_rect);
		dispmanxupdate = vc_dispmanx_update_start(0);
		vc_dispmanx_element_change_source(dispmanxupdate, dispmanxelement, dispmanxresource_amigafb_1);

		vc_dispmanx_update_submit(dispmanxupdate, vsync_callback, NULL);
		//vc_dispmanx_update_submit_sync(dispmanxupdate);

	}
	else
	{
		current_resource_amigafb = 1;
		vc_dispmanx_resource_write_data(  dispmanxresource_amigafb_2,
			VC_IMAGE_RGB565,
			gfxvidinfo.outwidth * 2,
			gfxvidinfo.bufmem,
			&blit_rect);
		dispmanxupdate = vc_dispmanx_update_start(0);
		vc_dispmanx_element_change_source(dispmanxupdate, dispmanxelement, dispmanxresource_amigafb_2);

		vc_dispmanx_update_submit(dispmanxupdate, vsync_callback, NULL);
	}
	need_wait_dispmanx_semaphore = 1;

	init_row_map();

}


void black_screen_now(void)
{
	SDL_FillRect(prSDLScreen, NULL, 0);
	SDL_Flip(prSDLScreen);
	flush_screen();
}


static void graphics_subinit(void)
{
	if (prSDLScreen == NULL)
	{
		fprintf(stderr, "Unable to set video mode: %s\n", SDL_GetError());
		return;
	}
	else
	{
		SDL_ShowCursor(SDL_DISABLE);
		InitAmigaVidMode(&currprefs);
	}
}

STATIC_INLINE int bitsInMask(unsigned long mask)
{
	/* count bits in mask */
	int n = 0;
	while (mask)
	{
		n += mask & 1;
		mask >>= 1;
	}
	return n;
}


STATIC_INLINE int maskShift(unsigned long mask)
{
	/* determine how far mask is shifted */
	int n = 0;
	while (!(mask & 1))
	{
		n++;
		mask >>= 1;
	}
	return n;
}


static int init_colors(void)
{
	int i;
	int red_bits, green_bits, blue_bits;
	int red_shift, green_shift, blue_shift;

	/* Truecolor: */
	red_bits = bitsInMask(prSDLScreen->format->Rmask);
	green_bits = bitsInMask(prSDLScreen->format->Gmask);
	blue_bits = bitsInMask(prSDLScreen->format->Bmask);
	red_shift = maskShift(prSDLScreen->format->Rmask);
	green_shift = maskShift(prSDLScreen->format->Gmask);
	blue_shift = maskShift(prSDLScreen->format->Bmask);
	alloc_colors64k(red_bits, green_bits, blue_bits, red_shift, green_shift, blue_shift, 0);
	notice_new_xcolors();
	for (i = 0; i < 4096; i++)
		xcolors[i] = xcolors[i] * 0x00010001;

	return 1;
}


/*
 * Find the colour depth of the display
 */
static int get_display_depth(void)
{
	const SDL_VideoInfo *vid_info;
	int depth = 0;

	if ((vid_info = SDL_GetVideoInfo())) {
		depth = vid_info->vfmt->BitsPerPixel;

		/* Don't trust the answer if it's 16 bits; the display
		* could actually be 15 bits deep. We'll count the bits
		* ourselves */
		if (depth == 16)
			depth = bitsInMask(vid_info->vfmt->Rmask) + bitsInMask(vid_info->vfmt->Gmask) + bitsInMask(vid_info->vfmt->Bmask);
	}
	return depth;
}

int GetSurfacePixelFormat(void)
{
	int depth = get_display_depth();
	int unit = (depth + 1) & 0xF8;

	return (unit == 8 ? RGBFB_CHUNKY
		  : depth == 15 && unit == 16 ? RGBFB_R5G5B5
		  : depth == 16 && unit == 16 ? RGBFB_R5G6B5
		  : unit == 24 ? RGBFB_B8G8R8
		  : unit == 32 ? RGBFB_R8G8B8A8
		  : RGBFB_NONE);
}


int graphics_init(bool mousecapture)
{
	uae_sem_init(&vsync_wait_sem, 0, 0);

	graphics_subinit();

	if (!init_colors())
		return 0;
  
	return 1;
}

void graphics_leave(void)
{
	graphics_subshutdown();
	SDL_FreeSurface(Dummy_prSDLScreen);
	bcm_host_deinit();
	SDL_VideoQuit();
}


#define  systemRedShift      (prSDLScreen->format->Rshift)
#define  systemGreenShift    (prSDLScreen->format->Gshift)
#define  systemBlueShift     (prSDLScreen->format->Bshift)
#define  systemRedMask       (prSDLScreen->format->Rmask)
#define  systemGreenMask     (prSDLScreen->format->Gmask)
#define  systemBlueMask      (prSDLScreen->format->Bmask)

static int save_png(SDL_Surface* surface, char *path)
{
	int w = surface->w;
	int h = surface->h;
	unsigned char * pix = (unsigned char *)surface->pixels;
	unsigned char writeBuffer[1024 * 3];
	FILE *f  = fopen(path, "wb");
	if (!f) return 0;
	png_structp png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING,
		NULL,
		NULL,
		NULL);
	if (!png_ptr) {
		fclose(f);
		return 0;
	}

	png_infop info_ptr = png_create_info_struct(png_ptr);

	if (!info_ptr) {
		png_destroy_write_struct(&png_ptr, NULL);
		fclose(f);
		return 0;
	}

	png_init_io(png_ptr, f);

	png_set_IHDR(png_ptr,
		info_ptr,
		w,
		h,
		8,
		PNG_COLOR_TYPE_RGB,
		PNG_INTERLACE_NONE,
		PNG_COMPRESSION_TYPE_DEFAULT,
		PNG_FILTER_TYPE_DEFAULT);

	png_write_info(png_ptr, info_ptr);

	unsigned char *b = writeBuffer;

	int sizeX = w;
	int sizeY = h;
	int y;
	int x;

	unsigned short *p = (unsigned short *)pix;
	for (y = 0; y < sizeY; y++) 
	{
		for (x = 0; x < sizeX; x++) 
		{
			unsigned short v = p[x];
  
			*b++ = ((v & systemRedMask) >> systemRedShift) << 3; // R
			*b++ = ((v & systemGreenMask) >> systemGreenShift) << 2; // G 
			*b++ = ((v & systemBlueMask) >> systemBlueShift) << 3; // B
		}
		p += surface->pitch / 2;
		png_write_row(png_ptr, writeBuffer);
		b = writeBuffer;
	}

	png_write_end(png_ptr, info_ptr);

	png_destroy_write_struct(&png_ptr, &info_ptr);

	fclose(f);
	return 1;
}


static void CreateScreenshot(void)
{
	int w, h;

	if (current_screenshot != NULL)
	{
		SDL_FreeSurface(current_screenshot);
		current_screenshot = NULL;
	}

	w = prSDLScreen->w;
	h = prSDLScreen->h;
	current_screenshot = SDL_CreateRGBSurfaceFrom(prSDLScreen->pixels,
		w,
		h,
		prSDLScreen->format->BitsPerPixel,
		prSDLScreen->pitch,
		prSDLScreen->format->Rmask,
		prSDLScreen->format->Gmask,
		prSDLScreen->format->Bmask,
		prSDLScreen->format->Amask);
}


static int save_thumb(char *path)
{
	int ret = 0;
	if (current_screenshot != NULL)
	{
		ret = save_png(current_screenshot, path);
		SDL_FreeSurface(current_screenshot);
		current_screenshot = NULL;
	}
	return ret;
}


#ifdef PICASSO96


int picasso_palette(void)
{
	int i, changed;

	changed = 0;
	for (i = 0; i < 256; i++) {
		int r = picasso96_state.CLUT[i].Red;
		int g = picasso96_state.CLUT[i].Green;
		int b = picasso96_state.CLUT[i].Blue;
		int value = (r << 16 | g << 8 | b);
		uae_u32 v = CONVERT_RGB(value);
		if (v !=  picasso_vidinfo.clut[i]) {
			picasso_vidinfo.clut[i] = v;
			changed = 1;
		} 
	}
	return changed;
}

static int resolution_compare(const void *a, const void *b)
{
	struct PicassoResolution *ma = (struct PicassoResolution *)a;
	struct PicassoResolution *mb = (struct PicassoResolution *)b;
	if (ma->res.width < mb->res.width)
		return -1;
	if (ma->res.width > mb->res.width)
		return 1;
	if (ma->res.height < mb->res.height)
		return -1;
	if (ma->res.height > mb->res.height)
		return 1;
	return ma->depth - mb->depth;
}
static void sortmodes(void)
{
	int	i = 0, idx = -1;
	int pw = -1, ph = -1;
	while (DisplayModes[i].depth >= 0)
		i++;
	qsort(DisplayModes, i, sizeof(struct PicassoResolution), resolution_compare);
	for (i = 0; DisplayModes[i].depth >= 0; i++) {
		if (DisplayModes[i].res.height != ph || DisplayModes[i].res.width != pw) {
			ph = DisplayModes[i].res.height;
			pw = DisplayModes[i].res.width;
			idx++;
		}
		DisplayModes[i].residx = idx;
	}
}

static void modesList(void)
{
	int i, j;

	i = 0;
	while (DisplayModes[i].depth >= 0) {
		write_log("%d: %s (", i, DisplayModes[i].name);
		j = 0;
		while (DisplayModes[i].refresh[j] > 0) {
			if (j > 0)
				write_log(",");
			write_log("%d", DisplayModes[i].refresh[j]);
			j++;
		}
		write_log(")\n");
		i++;
	}
}

void picasso_InitResolutions(void)
{
	struct MultiDisplay *md1;
	int i, count = 0;
	char tmp[200];
	int bit_idx;
	int bits[] = { 8, 16, 32 };
  
	Displays[0].primary = 1;
	Displays[0].disabled = 0;
	Displays[0].rect.left = 0;
	Displays[0].rect.top = 0;
	Displays[0].rect.right = 800;
	Displays[0].rect.bottom = 640;
	sprintf(tmp, "%s (%d*%d)", "Display", Displays[0].rect.right, Displays[0].rect.bottom);
	Displays[0].name = my_strdup(tmp);
	Displays[0].name2 = my_strdup("Display");

	md1 = Displays;
	DisplayModes = md1->DisplayModes = xmalloc(struct PicassoResolution, MAX_PICASSO_MODES);
	for (i = 0; i < MAX_SCREEN_MODES && count < MAX_PICASSO_MODES; i++) {
		for (bit_idx = 0; bit_idx < 3; ++bit_idx) {
			int bitdepth = bits[bit_idx];
			int bit_unit = (bitdepth + 1) & 0xF8;
			int rgbFormat = (bitdepth == 8 ? RGBFB_CLUT : (bitdepth == 16 ? RGBFB_R5G6B5 : RGBFB_R8G8B8A8));
			int pixelFormat = 1 << rgbFormat;
			pixelFormat |= RGBFF_CHUNKY;
      
			if (SDL_VideoModeOK (x_size_table[i], y_size_table[i], 16, SDL_SWSURFACE))
			{
				DisplayModes[count].res.width = x_size_table[i];
				DisplayModes[count].res.height = y_size_table[i];
				DisplayModes[count].depth = bit_unit >> 3;
				DisplayModes[count].refresh[0] = 50;
				DisplayModes[count].refresh[1] = 60;
				DisplayModes[count].refresh[2] = 0;
				DisplayModes[count].colormodes = pixelFormat;
				sprintf(DisplayModes[count].name,
					"%dx%d, %d-bit",
					DisplayModes[count].res.width,
					DisplayModes[count].res.height,
					DisplayModes[count].depth * 8);
  
				count++;
			}
		}
	}
	DisplayModes[count].depth = -1;
	sortmodes();
	modesList();
	DisplayModes = Displays[0].DisplayModes;
}

#endif

bool vsync_switchmode(int hz)
{
	int changed_height = changed_prefs.gfx_size.height;
	
	if (hz >= 55)
		hz = 60;
	else
		hz = 50;

	if (hz == 50 && currVSyncRate == 60)
	{
	  // Switch from NTSC -> PAL
		switch (changed_height) {
		case 200: changed_height = 240; break;
		case 216: changed_height = 262; break;
		case 240: changed_height = 270; break;
		case 256: changed_height = 270; break;
		case 262: changed_height = 270; break;
		case 270: changed_height = 270; break;
		}
	}
	else if (hz == 60 && currVSyncRate == 50)
	{
	  // Switch from PAL -> NTSC
		switch (changed_height) {
		case 200: changed_height = 200; break;
		case 216: changed_height = 200; break;
		case 240: changed_height = 200; break;
		case 256: changed_height = 216; break;
		case 262: changed_height = 216; break;
		case 270: changed_height = 240; break;
		}
	}

	if (changed_height == currprefs.gfx_size.height && hz == currprefs.chipset_refreshrate)
		return true;
  
	changed_prefs.gfx_size.height = changed_height;

	return true;
}

bool target_graphics_buffer_update(void)
{
	bool rate_changed = 0;
//	bool rate_changed = SetVSyncRate(currprefs.chipset_refreshrate);
  
	if (currprefs.gfx_size.height != changed_prefs.gfx_size.height)
	{
		update_display(&changed_prefs);
		rate_changed = true;
	}

	if (rate_changed)
	{
		black_screen_now();
		fpscounter_reset();
		time_per_frame = 1000 * 1000 / (currprefs.chipset_refreshrate);
	}

	return true;
}

#ifdef PICASSO96


void gfx_set_picasso_state(int on)
{
	if (on == screen_is_picasso)
		return;

	screen_is_picasso = on;
	open_screen(&currprefs);
	picasso_vidinfo.rowbytes = prSDLScreen->pitch;
}

void gfx_set_picasso_modeinfo(uae_u32 w, uae_u32 h, uae_u32 depth, RGBFTYPE rgbfmt)
{
	depth >>= 3;
	if (((unsigned)picasso_vidinfo.width == w) &&
	  ((unsigned)picasso_vidinfo.height == h) &&
	  ((unsigned)picasso_vidinfo.depth == depth) &&
	  (picasso_vidinfo.selected_rgbformat == rgbfmt))
		return;

	picasso_vidinfo.selected_rgbformat = rgbfmt;
	picasso_vidinfo.width = w;
	picasso_vidinfo.height = h;
	picasso_vidinfo.depth = 2; // Native depth
	picasso_vidinfo.extra_mem = 1;

	picasso_vidinfo.pixbytes = 2; // Native bytes
	if (screen_is_picasso)
	{
		open_screen(&currprefs);
		picasso_vidinfo.rowbytes	= prSDLScreen->pitch;
		picasso_vidinfo.rgbformat = RGBFB_R5G6B5;
	}
}

uae_u8 *gfx_lock_picasso(void)
{
  // We lock the surface directly after create and flip
	picasso_vidinfo.rowbytes = prSDLScreen->pitch;
	return (uae_u8 *)prSDLScreen->pixels;
}

void gfx_unlock_picasso(void)
{
  // We lock the surface directly after create and flip, so no unlock here
}

#endif // PICASSO96