/*

SDL - Simple DirectMedia Layer

Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Sam Lantinga

This library is free software; you can redistribute it and/or

modify it under the terms of the GNU Library General Public

License as published by the Free Software Foundation; either

version 2 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

Library General Public License for more details.

You should have received a copy of the GNU Library General Public

License along with this library; if not, write to the Free

Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

Sam Lantinga

slouken@libsdl.org

*/

#ifdef SAVE_RCSID

static char rcsid =

"@(#) $Id$";

#endif

/*

* GEM SDL video driver implementation

* inspired from the Dummy SDL driver

*

* Patrice Mandin

* and work from

* Olivier Landemarre, Johan Klockars, Xavier Joubert, Claude Attard

*/

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

/* Mint includes */

#include <gem.h>

#include <gemx.h>

#include <mint/osbind.h>

#include <sys/cookie.h>

#include "SDL.h"

#include "SDL_error.h"

#include "SDL_video.h"

#include "SDL_mouse.h"

#include "SDL_sysvideo.h"

#include "SDL_pixels_c.h"

#include "SDL_events_c.h"

#include "SDL_ataric2p_s.h"

#include "SDL_ataric2p060_c.h"

#include "SDL_atarieddi_s.h"

#include "SDL_atarimxalloc_c.h"

#include "SDL_gemvideo.h"

#include "SDL_gemevents_c.h"

#include "SDL_gemmouse_c.h"

#include "SDL_gemwm_c.h"

#include "SDL_xbiosevents_c.h"

/* Defines */

#define GEM_VID_DRIVER_NAME "gem"

/* Variables */

static unsigned char vdi_index[256] = {

0, 2, 3, 6, 4, 7, 5, 8,

9, 10, 11, 14, 12, 15, 13, 255

};

static const unsigned char empty_name[]="";

/* Initialization/Query functions */

static int GEM_VideoInit(_THIS, SDL_PixelFormat *vformat);

static SDL_Rect **GEM_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags);

static SDL_Surface *GEM_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags);

static int GEM_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors);

static void GEM_VideoQuit(_THIS);

/* Hardware surface functions */

static int GEM_AllocHWSurface(_THIS, SDL_Surface *surface);

static int GEM_LockHWSurface(_THIS, SDL_Surface *surface);

static int GEM_FlipHWSurface(_THIS, SDL_Surface *surface);

static void GEM_UnlockHWSurface(_THIS, SDL_Surface *surface);

static void GEM_FreeHWSurface(_THIS, SDL_Surface *surface);

static void GEM_UpdateRects(_THIS, int numrects, SDL_Rect *rects);

#if 0

static int GEM_ToggleFullScreen(_THIS, int on);

#endif

/* Internal functions */

static void GEM_FreeBuffers(_THIS);

static void refresh_window(_THIS, int winhandle, short *rect);

/* GEM driver bootstrap functions */

static int GEM_Available(void)

{

short ap_id;

const char *envr = getenv("SDL_VIDEODRIVER");

/* Check if user asked a different video driver */

if ((envr) && (strcmp(envr, GEM_VID_DRIVER_NAME)!=0)) {

return 0;

}

/* Test if AES available */

ap_id = appl_init();

if (ap_id == -1)

return 0;

appl_exit();

return 1;

}

static void GEM_DeleteDevice(SDL_VideoDevice *device)

{

free(device->hidden);

free(device);

}

static SDL_VideoDevice *GEM_CreateDevice(int devindex)

{

SDL_VideoDevice *device;

/* Initialize all variables that we clean on shutdown */

device = (SDL_VideoDevice *)malloc(sizeof(SDL_VideoDevice));

if ( device ) {

memset(device, 0, (sizeof *device));

device->hidden = (struct SDL_PrivateVideoData *)

malloc((sizeof *device->hidden));

}

if ( (device == NULL) || (device->hidden == NULL) ) {

SDL_OutOfMemory();

if ( device ) {

free(device);

}

return(0);

}

memset(device->hidden, 0, (sizeof *device->hidden));

atari_test_cpu060_present();

/* Set the function pointers */

device->VideoInit = GEM_VideoInit;

device->ListModes = GEM_ListModes;

device->SetVideoMode = GEM_SetVideoMode;

device->SetColors = GEM_SetColors;

device->UpdateRects = NULL /*GEM_UpdateRects*/;

device->VideoQuit = GEM_VideoQuit;

device->AllocHWSurface = GEM_AllocHWSurface;

device->LockHWSurface = GEM_LockHWSurface;

device->UnlockHWSurface = GEM_UnlockHWSurface;

device->FlipHWSurface = GEM_FlipHWSurface;

device->FreeHWSurface = GEM_FreeHWSurface;

device->ToggleFullScreen = NULL /*GEM_ToggleFullScreen*/;

/* Window manager */

device->SetCaption = GEM_SetCaption;

device->SetIcon = NULL /*GEM_SetIcon*/;

device->IconifyWindow = GEM_IconifyWindow;

device->GrabInput = GEM_GrabInput;

/* Events */

device->InitOSKeymap = GEM_InitOSKeymap;

device->PumpEvents = GEM_PumpEvents;

/* Mouse */

device->FreeWMCursor = GEM_FreeWMCursor;

device->CreateWMCursor = GEM_CreateWMCursor;

device->ShowWMCursor = GEM_ShowWMCursor;

device->WarpWMCursor = GEM_WarpWMCursor;

device->CheckMouseMode = GEM_CheckMouseMode;

/* Joystick */

SDL_AtariXbios_InstallVectors(ATARI_XBIOS_JOYSTICKEVENTS);

device->free = GEM_DeleteDevice;

return device;

}

VideoBootStrap GEM_bootstrap = {

GEM_VID_DRIVER_NAME, "Atari GEM video driver",

GEM_Available, GEM_CreateDevice

};

static void VDI_ReadExtInfo(_THIS, short *work_out)

{

unsigned long EdDI_version;

unsigned long cookie_EdDI;

Uint32 num_colours;

Uint16 clut_type, num_bits;

/* Read EdDI informations */

if (Getcookie(C_EdDI, &cookie_EdDI) == C_NOTFOUND) {

return;

}

EdDI_version = Atari_get_EdDI_version( (void *)cookie_EdDI);

vq_scrninfo(VDI_handle, work_out);

VDI_format = work_out[0];

clut_type = work_out[1];

num_bits = work_out[2];

num_colours = *((Uint32 *) &work_out[3]);

/* With EdDI>=1.1, we can have screen pitch, address and format

* so we can directly write to screen without using vro_cpyfm

*/

if (EdDI_version >= EDDI_11) {

VDI_pitch = work_out[5];

VDI_screen = (void *) *((unsigned long *) &work_out[6]);

switch(num_colours) {

case 32768UL:

if (work_out[14] & (1<<7)) {

/* Little endian */

if (work_out[14] & (1<<1)) {

/* Falcon */

VDI_alphamask = 1 << 13;

VDI_redmask = 31 << 3;

VDI_greenmask = (3 << 14) | 7;

VDI_bluemask = 31 << 8;

} else {

/* Others */

VDI_alphamask = 1 << 7;

VDI_redmask = 31 << 2;

VDI_greenmask = (7 << 13) | 3;

VDI_bluemask = 31 << 8;

}

} else {

/* Big endian */

if (work_out[14] & (1<<1)) {

/* Falcon */

VDI_alphamask = 1 << 5;

VDI_redmask = 31 << 11;

VDI_greenmask = 31 << 6;

VDI_bluemask = 31;

} else {

/* Others */

VDI_alphamask = 1 << 15;

VDI_redmask = 31 << 10;

VDI_greenmask = 31 << 5;

VDI_bluemask = 31;

}

}

break;

case 65536UL:

if (work_out[14] & (1<<7)) {

/* Little endian */

VDI_alphamask = 0;

VDI_redmask = 31 << 3;

VDI_greenmask = (7 << 13) | 7;

VDI_bluemask = 31 << 8;

} else {

/* Big endian */

VDI_alphamask = 0;

VDI_redmask = 31 << 11;

VDI_greenmask = 63 << 5;

VDI_bluemask = 31;

}

break;

case 16777216UL:

if (work_out[14] & (1<<7)) {

/* Little endian */

switch(num_bits) {

case 24:

VDI_alphamask = 0;

VDI_redmask = 255;

VDI_greenmask = 255 << 8;

VDI_bluemask = 255 << 16;

break;

case 32:

VDI_alphamask = 255;

VDI_redmask = 255 << 8;

VDI_greenmask = 255 << 16;

VDI_bluemask = 255 << 24;

break;

}

} else {

/* Big endian */

switch(num_bits) {

case 24:

VDI_alphamask = 0;

VDI_redmask = 255 << 16;

VDI_greenmask = 255 << 8;

VDI_bluemask = 255;

break;

case 32:

VDI_alphamask = 255 << 24;

VDI_redmask = 255 << 16;

VDI_greenmask = 255 << 8;

VDI_bluemask = 255;

break;

}

}

break;

}

}

switch(clut_type) {

case VDI_CLUT_HARDWARE:

{

int i;

Uint16 *tmp_p;

tmp_p = (Uint16 *)&work_out[16];

for (i=0;i<256;i++) {

vdi_index[i] = *tmp_p++;

}

}

break;

case VDI_CLUT_SOFTWARE:

if (EdDI_version < EDDI_11) {

int component; /* red, green, blue, alpha, overlay */

int num_bit;

unsigned short *tmp_p;

/* We can build masks with info here */

tmp_p = (unsigned short *) &work_out[16];

for (component=0;component<5;component++) {

for (num_bit=0;num_bit<16;num_bit++) {

unsigned short valeur;

valeur = *tmp_p++;

if (valeur == 0xffff) {

continue;

}

switch(component) {

case 0:

VDI_redmask |= 1<< valeur;

break;

case 1:

VDI_greenmask |= 1<< valeur;

break;

case 2:

VDI_bluemask |= 1<< valeur;

break;

case 3:

VDI_alphamask |= 1<< valeur;

break;

}

}

}

/* Remove lower green bits for Intel endian screen */

if ((VDI_greenmask == ((7<<13)|3)) || (VDI_greenmask == ((7<<13)|7))) {

VDI_greenmask &= ~(7<<13);

}

}

break;

case VDI_CLUT_NONE:

break;

}

}

int GEM_VideoInit(_THIS, SDL_PixelFormat *vformat)

{

int i;

short work_in[12], work_out[272], dummy;

/* Open AES (Application Environment Services) */

GEM_ap_id = appl_init();

if (GEM_ap_id == -1) {

fprintf(stderr,"Can not open AES\n");

return 1;

}

/* Read version and features */

GEM_version = aes_global[0];

if (GEM_version >= 0x0400) {

short ap_gout[4];

GEM_wfeatures=0;

if (appl_getinfo(AES_WINDOW, &ap_gout[0], &ap_gout[1], &ap_gout[2], &ap_gout[3])==0) {

GEM_wfeatures=ap_gout[0];

}

}

/* Ask VDI physical workstation handle opened by AES */

VDI_handle = graf_handle(&dummy, &dummy, &dummy, &dummy);

if (VDI_handle<1) {

fprintf(stderr,"Wrong VDI handle %d returned by AES\n",VDI_handle);

return 1;

}

/* Open virtual VDI workstation */

work_in[0]=Getrez()+2;

for(i = 1; i < 10; i++)

work_in[i] = 1;

work_in[10] = 2;

v_opnvwk(work_in, &VDI_handle, work_out);

if (VDI_handle == 0) {

fprintf(stderr,"Can not open VDI virtual workstation\n");

return 1;

}

/* Read fullscreen size */

VDI_w = work_out[0] + 1;

VDI_h = work_out[1] + 1;

/* Read desktop size and position */

if (!wind_get(DESKTOP_HANDLE, WF_WORKXYWH, &GEM_desk_x, &GEM_desk_y, &GEM_desk_w, &GEM_desk_h)) {

fprintf(stderr,"Can not read desktop properties\n");

return 1;

}

/* Read bit depth */

vq_extnd(VDI_handle, 1, work_out);

VDI_bpp = work_out[4];

VDI_oldnumcolors=0;

switch(VDI_bpp) {

case 8:

VDI_pixelsize=1;

break;

case 15:

case 16:

VDI_pixelsize=2;

break;

case 24:

VDI_pixelsize=3;

break;

case 32:

VDI_pixelsize=4;

break;

default:

fprintf(stderr,"%d bits colour depth not supported\n",VDI_bpp);

return 1;

}

/* Setup hardware -> VDI palette mapping */

for(i = 16; i < 255; i++) {

vdi_index[i] = i;

}

vdi_index[255] = 1;

/* Save current palette */

if (VDI_bpp>8) {

VDI_oldnumcolors=1<<8;

} else {

VDI_oldnumcolors=1<<VDI_bpp;

}

for(i = 0; i < VDI_oldnumcolors; i++) {

short rgb[3];

vq_color(VDI_handle, i, 0, rgb);

VDI_oldpalette[i][0] = rgb[0];

VDI_oldpalette[i][1] = rgb[1];

VDI_oldpalette[i][2] = rgb[2];

}

/* Setup screen info */

GEM_title_name = empty_name;

GEM_icon_name = empty_name;

GEM_handle = -1;

GEM_locked = SDL_FALSE;

GEM_win_fulled = SDL_FALSE;

VDI_screen = NULL;

VDI_ReadExtInfo(this, work_out);

if (VDI_screen == NULL) {

VDI_pitch = VDI_w * ((VDI_bpp)>>3);

VDI_format = VDI_FORMAT_UNKNOWN;

VDI_redmask = VDI_greenmask = VDI_bluemask = VDI_alphamask = 0;

}

/* Setup destination mfdb */

VDI_dst_mfdb.fd_addr = NULL;

/* Update hardware info */

this->info.hw_available = 0;

this->info.video_mem = 0;

/* TC, screen : no shadow (direct)

* 8P, screen: no shadow (direct)

* 8I, screen: shadow, c2p (shadow -> c2p)

* TC, no screen: shadow (vro_cpyfm)

* 8P, no screen: shadow (vro_cpyfm)

* 8I/U, no screen: shadow, shadow_c2p, c2p (shadow -> c2p -> vro_cpyfm)

*/

/* Determine the screen depth */

/* we change this during the SDL_SetVideoMode implementation... */

vformat->BitsPerPixel = VDI_bpp;

/* Set mouse cursor to arrow */

graf_mouse(ARROW, NULL);

/* Init chunky to planar routine */

Atari_C2pInit = Atari_C2pInit8;

if (atari_cpu060_avail) {

Atari_C2pConvert = Atari_C2pConvert8_060;

} else {

Atari_C2pConvert = Atari_C2pConvert8;

}

Atari_C2pInit();

/* We're done! */

return(0);

}

SDL_Rect **GEM_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags)

{

if (format->BitsPerPixel == VDI_bpp) {

return((SDL_Rect **)-1);

} else {

return ((SDL_Rect **)NULL);

}

}

static void GEM_FreeBuffers(_THIS)

{

/* Release buffer */

if ( GEM_buffer ) {

free( GEM_buffer );

GEM_buffer=NULL;

}

/* Destroy window */

if (GEM_handle>=0) {

wind_close(GEM_handle);

wind_delete(GEM_handle);

GEM_handle=-1;

}

}

SDL_Surface *GEM_SetVideoMode(_THIS, SDL_Surface *current,

int width, int height, int bpp, Uint32 flags)

{

int maxwidth, maxheight;

Uint32 modeflags, screensize;

SDL_bool use_shadow;

modeflags = SDL_HWPALETTE;

GEM_FreeBuffers(this);

/*--- Verify if asked mode can be used ---*/

if (flags & SDL_FULLSCREEN) {

maxwidth=VDI_w;

maxheight=VDI_h;

} else {

/* Windowed mode */

maxwidth=GEM_desk_w;

maxheight=GEM_desk_h;

}

if ((maxwidth < width) || (maxheight < height) || (VDI_bpp != bpp)) {

SDL_SetError("Couldn't find requested mode in list");

return(NULL);

}

/*--- Allocate the new pixel format for the screen ---*/

if ( ! SDL_ReallocFormat(current, VDI_bpp, VDI_redmask, VDI_greenmask, VDI_bluemask, VDI_alphamask) ) {

SDL_SetError("Couldn't allocate new pixel format for requested mode");

return(NULL);

}

/*--- Allocate shadow buffer if needed ---*/

use_shadow=SDL_FALSE;

if (flags & SDL_FULLSCREEN) {

if (!VDI_screen) {

use_shadow=SDL_TRUE;

} else if (VDI_format==VDI_FORMAT_INTER) {

use_shadow=SDL_TRUE;

}

} else {

use_shadow=SDL_TRUE;

}

if (use_shadow) {

screensize = width * height * VDI_pixelsize;

GEM_buffer = Atari_SysMalloc(screensize, MX_PREFTTRAM);

if (GEM_buffer==NULL) {

fprintf(stderr,"Unable to allocate shadow buffer\n");

return NULL;

}

memset(GEM_buffer, 0, screensize);

}

/*--- Initialize screen ---*/

if (flags & SDL_FULLSCREEN) {

short rgb[3]={0,0,0};

short pxy[4];

if (!GEM_locked) {

/* Reserve memory space, used to be sure of compatibility */

form_dial( FMD_START, 0,0,0,0, 0,0,VDI_w,VDI_h);

/* Lock AES */

while (!wind_update(BEG_UPDATE|BEG_MCTRL));

GEM_locked=SDL_TRUE;

}

/* Clear screen */

pxy[0] = pxy[1] = 0;

pxy[2] = VDI_w - 1;

pxy[3] = VDI_h - 1;

vs_color(VDI_handle, vdi_index[0], rgb);

vsf_color(VDI_handle,0);

vsf_interior(VDI_handle,1);

vsf_perimeter(VDI_handle,0);

v_bar(VDI_handle,pxy);

modeflags |= SDL_FULLSCREEN;

if (VDI_screen && (VDI_format==VDI_FORMAT_PACK)) {

modeflags |= SDL_HWSURFACE;

} else {

modeflags |= SDL_SWSURFACE;

}

} else {

int posx,posy;

short x2,y2,w2,h2;

if (GEM_locked) {

/* Restore screen memory, and send REDRAW to all apps */

form_dial( FMD_FINISH, 0,0,0,0, 0,0,VDI_w,VDI_h);

/* Unlock AES */

wind_update(END_UPDATE|END_MCTRL);

GEM_locked=SDL_FALSE;

}

/* Center our window */

posx = GEM_desk_x;

posy = GEM_desk_y;

if (width<GEM_desk_w)

posx += (GEM_desk_w - width) >> 1;

if (height<GEM_desk_h)

posy += (GEM_desk_h - height) >> 1;

/* Calculate our window size and position */

if (!(flags & SDL_NOFRAME)) {

GEM_win_type=NAME|MOVER|CLOSER|SMALLER;

if (flags & SDL_RESIZABLE) {

GEM_win_type |= FULLER|SIZER;

modeflags |= SDL_RESIZABLE;

}

} else {

GEM_win_type=0;

modeflags |= SDL_NOFRAME;

}

if (!wind_calc(0, GEM_win_type, posx, posy, width, height, &x2, &y2, &w2, &h2)) {

GEM_FreeBuffers(this);

fprintf(stderr,"Can not calculate window attributes\n");

return NULL;

}

/* Create window */

GEM_handle=wind_create(GEM_win_type, x2, y2, w2, h2);

if (GEM_handle<0) {

GEM_FreeBuffers(this);

fprintf(stderr,"Can not create window\n");

return NULL;

}

/* Setup window name */

wind_set(GEM_handle,WF_NAME,(short)(((unsigned long)GEM_title_name)>>16),(short)(((unsigned long)GEM_title_name) & 0xffff),0,0);

/* Open the window */

wind_open(GEM_handle,x2,y2,w2,h2);

modeflags |= SDL_SWSURFACE;

}

/* Set up the new mode framebuffer */

current->flags = modeflags;

current->w = width;

current->h = height;

if (use_shadow) {

current->pixels = GEM_buffer;

current->pitch = width * (VDI_bpp >> 3);

} else {

current->pixels = VDI_screen;

current->pixels += VDI_pitch * ((VDI_h - height) >> 1);

current->pixels += VDI_pixelsize * ((VDI_w - width) >> 1);

current->pitch = VDI_pitch;

}

this->UpdateRects = GEM_UpdateRects;

/* We're done */

return(current);

}

/* We don't actually allow hardware surfaces other than the main one */

static int GEM_AllocHWSurface(_THIS, SDL_Surface *surface)

{

return -1;

}

static void GEM_FreeHWSurface(_THIS, SDL_Surface *surface)

{

return;

}

/* We need to wait for vertical retrace on page flipped displays */

static int GEM_LockHWSurface(_THIS, SDL_Surface *surface)

{

return(0);

}

static void GEM_UnlockHWSurface(_THIS, SDL_Surface *surface)

{

return;

}

static void GEM_UpdateRectsFullscreen(_THIS, int numrects, SDL_Rect *rects)

{

SDL_Surface *surface;

surface = this->screen;

if (VDI_screen) {

if (VDI_format==VDI_FORMAT_INTER) {

void *destscr;

int destx;

destscr = VDI_screen;

destscr += VDI_pitch * ((VDI_h - surface->h) >> 1);

destx = (VDI_w - surface->w) >> 1;

destx &= ~15;

destscr += VDI_pixelsize * destx;

/* Convert chunky to planar screen */

Atari_C2pConvert(

surface->pixels,

destscr,

surface->w,

surface->h,

SDL_FALSE,

surface->pitch,

VDI_pitch

);

}

} else {

MFDB mfdb_src;

short blitcoords[8];

int i;

mfdb_src.fd_addr=surface->pixels;

mfdb_src.fd_w=surface->w;

mfdb_src.fd_h=surface->h;

mfdb_src.fd_wdwidth=(surface->w) >> 4;

mfdb_src.fd_stand=0;

mfdb_src.fd_nplanes=surface->format->BitsPerPixel;

mfdb_src.fd_r1=0;

mfdb_src.fd_r2=0;

mfdb_src.fd_r3=0;

for ( i=0; i<numrects; ++i ) {

blitcoords[0] = rects[i].x;

blitcoords[1] = rects[i].y;

blitcoords[2] = blitcoords[0] + rects[i].w - 1;

blitcoords[3] = blitcoords[1] + rects[i].h - 1;

blitcoords[4] = rects[i].x + ((VDI_w - surface->w) >> 1);

blitcoords[5] = rects[i].y + ((VDI_h - surface->h) >> 1);

blitcoords[6] = blitcoords[4] + rects[i].w - 1;

blitcoords[7] = blitcoords[5] + rects[i].h - 1;

vro_cpyfm(VDI_handle, S_ONLY, blitcoords, &mfdb_src, &VDI_dst_mfdb);

}

}

}

static void GEM_UpdateRectsWindowed(_THIS, int numrects, SDL_Rect *rects)

{

short pxy[8], wind_pxy[8];

int i;

wind_get(GEM_handle, WF_WORKXYWH, &wind_pxy[0], &wind_pxy[1], &wind_pxy[2], &wind_pxy[3]);

for ( i=0; i<numrects; ++i ) {

pxy[0] = wind_pxy[0] + rects[i].x;

pxy[1] = wind_pxy[1] + rects[i].y;

pxy[2] = rects[i].w;

pxy[3] = rects[i].h;

GEM_wind_redraw(this, GEM_handle, pxy);

}

}

static void GEM_UpdateRects(_THIS, int numrects, SDL_Rect *rects)

{

SDL_Surface *surface;

surface = this->screen;

if (surface->flags & SDL_FULLSCREEN) {

GEM_UpdateRectsFullscreen(this, numrects, rects);

} else {

GEM_UpdateRectsWindowed(this, numrects, rects);

}

}

static int GEM_FlipHWSurfaceFullscreen(_THIS, SDL_Surface *surface)

{

if (VDI_screen) {

if (VDI_format==VDI_FORMAT_INTER) {

void *destscr;

int destx;

/* Center on destination screen */

destscr = VDI_screen;

destscr += VDI_pitch * ((VDI_h - surface->h) >> 1);

destx = (VDI_w - surface->w) >> 1;

destx &= ~15;

destscr += VDI_pixelsize * destx;

/* Convert chunky to planar screen */

Atari_C2pConvert(

surface->pixels,

destscr,

surface->w,

surface->h,

SDL_FALSE,

surface->pitch,

VDI_pitch

);

}

} else {

MFDB mfdb_src;

short blitcoords[8];

mfdb_src.fd_addr=surface->pixels;

mfdb_src.fd_w=surface->w;

mfdb_src.fd_h=surface->h;

mfdb_src.fd_wdwidth=(surface->w) >> 4;

mfdb_src.fd_stand=0;

mfdb_src.fd_nplanes=surface->format->BitsPerPixel;

mfdb_src.fd_r1=0;

mfdb_src.fd_r2=0;

mfdb_src.fd_r3=0;

blitcoords[0] = 0;

blitcoords[1] = 0;

blitcoords[2] = surface->w - 1;

blitcoords[3] = surface->h - 1;

blitcoords[4] = (VDI_w - surface->w) >> 1;

blitcoords[5] = (VDI_h - surface->h) >> 1;

blitcoords[6] = blitcoords[4] + surface->w - 1;

blitcoords[7] = blitcoords[5] + surface->h - 1;

vro_cpyfm(VDI_handle, S_ONLY, blitcoords, &mfdb_src, &VDI_dst_mfdb);

}

return(0);

}

static int GEM_FlipHWSurfaceWindowed(_THIS, SDL_Surface *surface)

{

short pxy[8];

/* Update the whole window */

wind_get(GEM_handle, WF_WORKXYWH, &pxy[0], &pxy[1], &pxy[2], &pxy[3]);

GEM_wind_redraw(this, GEM_handle, pxy);

return(0);

}

static int GEM_FlipHWSurface(_THIS, SDL_Surface *surface)

{

if (surface->flags & SDL_FULLSCREEN) {

return GEM_FlipHWSurfaceFullscreen(this, surface);

} else {

return GEM_FlipHWSurfaceWindowed(this, surface);

}

}

static int GEM_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors)

{

int i;

SDL_Surface *surface;

/* Do not change palette in True Colour */

surface = this->screen;

if (surface->format->BitsPerPixel > 8) {

return 1;

}

for(i = 0; i < ncolors; i++)

{

int r, g, b;

short rgb[3];

r = colors[i].r;

g = colors[i].g;

b = colors[i].b;

rgb[0] = (1000 * r) / 255;

rgb[1] = (1000 * g) / 255;

rgb[2] = (1000 * b) / 255;

vs_color(VDI_handle, vdi_index[firstcolor+i], rgb);

}

return(1);

}

#if 0

static int GEM_ToggleFullScreen(_THIS, int on)

{

if (on) {

if (!GEM_locked) {

/* Lock AES */

while (!wind_update(BEG_UPDATE|BEG_MCTRL));

GEM_locked=SDL_TRUE;

}

} else {

if (GEM_locked) {

/* Unlock AES */

wind_update(END_UPDATE|END_MCTRL);

GEM_locked=SDL_FALSE;

}

/* Redraw all screen */

}

return(1);

}

#endif

/* Note: If we are terminated, this could be called in the middle of

another SDL video routine -- notably UpdateRects.

*/

void GEM_VideoQuit(_THIS)

{

SDL_AtariXbios_RestoreVectors();

GEM_FreeBuffers(this);

if (GEM_locked) {

/* Restore screen memory, and send REDRAW to all apps */

form_dial( FMD_FINISH, 0,0,0,0, 0,0,VDI_w,VDI_h);

/* Unlock AES */

wind_update(END_UPDATE|END_MCTRL);

GEM_locked=SDL_FALSE;

}

/* Close AES application */

appl_exit();

/* Restore palette */

if (VDI_oldnumcolors) {

int i;

for(i = 0; i < VDI_oldnumcolors; i++) {

short rgb[3];

rgb[0] = VDI_oldpalette[i][0];

rgb[1] = VDI_oldpalette[i][1];

rgb[2] = VDI_oldpalette[i][2];

vs_color(VDI_handle, i, rgb);

}

}

/* Close VDI workstation */

if (VDI_handle) {

v_clsvwk(VDI_handle);

}

/* Free mode list */

if (SDL_modelist[0]) {

free(SDL_modelist[0]);

SDL_modelist[0]=NULL;

}

this->screen->pixels = NULL;

}

void GEM_wind_redraw(_THIS, int winhandle, short *inside)

{

short todo[4];

/* Tell AES we are going to update */

while (!wind_update(BEG_UPDATE));

v_hide_c(VDI_handle);

/* Browse the rectangle list to redraw */

wind_get(winhandle, WF_FIRSTXYWH, &todo[0], &todo[1], &todo[2], &todo[3]);

while (todo[2] && todo[3]) {