/*+
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    SDL - Simple DirectMedia Layer+
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    Copyright (C) 1997-2004 Sam Lantinga+
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    Copyright (C) 2001  Hsieh-Fu Tsai+
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    Copyright (C) 2002  Greg Haerr <greg@censoft.com>+
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+
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    This library is free software; you can redistribute it and/or+
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    modify it under the terms of the GNU Library General Public+
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    License as published by the Free Software Foundation; either+
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    version 2 of the License, or (at your option) any later version.+
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+
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    This library is distributed in the hope that it will be useful,+
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    but WITHOUT ANY WARRANTY; without even the implied warranty of+
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    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU+
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    Library General Public License for more details.+
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+
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    You should have received a copy of the GNU Library General Public+
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    License along with this library; if not, write to the Free+
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    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA+
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+
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    Sam Lantinga+
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    slouken@libsdl.org+
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    +
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    Hsieh-Fu Tsai+
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    clare@setabox.com+
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*/+
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#include "SDL_config.h"+
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+
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#include "SDL_nximage_c.h"+
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+
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void+
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NX_NormalUpdate(_THIS, int numrects, SDL_Rect * rects)+
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{+
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    int i, j, xinc, yinc, destinc, rowinc;+
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    int x, y, w, h;+
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    unsigned char *src = NULL, *dest = NULL;+
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+
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    Dprintf("enter NX_NormalUpdate\n");+
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+
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    /* These are the values for the incoming image */+
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    xinc = this->screen->format->BytesPerPixel;+
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    yinc = this->screen->pitch;+
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+
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    for (i = 0; i < numrects; ++i) {+
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        x = rects[i].x, y = rects[i].y;+
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        w = rects[i].w, h = rects[i].h;+
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        src = SDL_Image + y * yinc + x * xinc;+
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#ifdef ENABLE_NANOX_DIRECT_FB+
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        if (Clientfb) {+
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            if (currently_fullscreen)+
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                dest =+
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                    fbinfo.winpixels + (((y + OffsetY) * fbinfo.pitch) ++
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                                        ((x + OffsetX) * fbinfo.bytespp));+
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            else+
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                dest =+
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                    fbinfo.winpixels + ((y * fbinfo.pitch) ++
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                                        (x * fbinfo.bytespp));+
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            destinc = fbinfo.pitch;+
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        } else+
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#endif+
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        {+
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            dest = Image_buff;+
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            destinc = w * xinc;+
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        }+
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        rowinc = w * xinc;+
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+
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        // apply GammaRamp table+
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        if ((pixel_type == MWPF_TRUECOLOR0888+
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             || pixel_type == MWPF_TRUECOLOR888) && GammaRamp_R+
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            && GammaRamp_G && GammaRamp_B) {+
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            Uint8 *ptrsrc;+
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            Uint8 *ptrdst;+
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            int k;+
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+
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            for (j = h; j > 0; --j, src += yinc, dest += destinc) {+
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                ptrsrc = src;+
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                ptrdst = dest;+
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                for (k = w; k > 0; --k) {+
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                    *ptrdst++ = GammaRamp_B[*ptrsrc++] >> 8;+
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                    *ptrdst++ = GammaRamp_G[*ptrsrc++] >> 8;+
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                    *ptrdst++ = GammaRamp_R[*ptrsrc++] >> 8;+
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                    *ptrdst++ = 0;+
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                    ++ptrsrc;+
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                }+
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            }+
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        }+
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#if 1                           /* This is needed for microwindows 0.90 or older */+
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        else if (pixel_type == MWPF_TRUECOLOR0888+
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                 || pixel_type == MWPF_TRUECOLOR888) {+
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            Uint8 *ptrsrc;+
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            Uint8 *ptrdst;+
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            int k;+
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+
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            for (j = h; j > 0; --j, src += yinc, dest += destinc) {+
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                ptrsrc = src;+
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                ptrdst = dest;+
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                for (k = w; k > 0; --k) {+
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                    *ptrdst++ = *ptrsrc++;+
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                    *ptrdst++ = *ptrsrc++;+
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                    *ptrdst++ = *ptrsrc++;+
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                    *ptrdst++ = 0;+
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                    ++ptrsrc;+
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                }+
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            }+
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        }+
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#endif+
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        else {+
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            for (j = h; j > 0; --j, src += yinc, dest += destinc)+
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                SDL_memcpy(dest, src, rowinc);+
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        }+
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        if (!Clientfb) {+
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            if (currently_fullscreen) {+
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                GrArea(FSwindow, SDL_GC, x + OffsetX, y + OffsetY, w,+
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                       h, Image_buff, pixel_type);+
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            } else {+
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                GrArea(SDL_Window, SDL_GC, x, y, w, h, Image_buff,+
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                       pixel_type);+
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            }+
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        }+
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    }+
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    GrFlush();+
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+
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    Dprintf("leave NX_NormalUpdate\n");+
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}+
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+
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int+
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NX_SetupImage(_THIS, SDL_Surface * screen)+
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{+
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    int size = screen->h * screen->pitch;+
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+
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    Dprintf("enter NX_SetupImage\n");+
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+
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    screen->pixels = (void *) SDL_malloc(size);+
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+
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    if (!Clientfb) {+
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        Image_buff = (unsigned char *) SDL_malloc(size);+
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        if (screen->pixels == NULL || Image_buff == NULL) {+
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            SDL_free(screen->pixels);+
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            SDL_free(Image_buff);+
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            SDL_OutOfMemory();+
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            return -1;+
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        }+
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    }+
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+
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    SDL_Image = (unsigned char *) screen->pixels;+
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+
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    this->UpdateRects = NX_NormalUpdate;+
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+
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    Dprintf("leave NX_SetupImage\n");+
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    return 0;+
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}+
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+
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void+
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NX_DestroyImage(_THIS, SDL_Surface * screen)+
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{+
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    Dprintf("enter NX_DestroyImage\n");+
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+
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    if (SDL_Image)+
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        SDL_free(SDL_Image);+
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    if (Image_buff)+
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        SDL_free(Image_buff);+
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    if (screen)+
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        screen->pixels = NULL;+
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+
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    Dprintf("leave NX_DestroyImage\n");+
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}+
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+
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int+
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NX_ResizeImage(_THIS, SDL_Surface * screen, Uint32 flags)+
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{+
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    int retval;+
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    GR_SCREEN_INFO si;+
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+
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    Dprintf("enter NX_ResizeImage\n");+
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+
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    NX_DestroyImage(this, screen);+
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    retval = NX_SetupImage(this, screen);+
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+
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    GrGetScreenInfo(&si);+
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    OffsetX = (si.cols - screen->w) / 2;+
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    OffsetY = (si.rows - screen->h) / 2;+
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+
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#ifdef ENABLE_NANOX_DIRECT_FB+
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    if (Clientfb) {+
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        /* Get current window position and fb pointer */+
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        if (currently_fullscreen)+
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            GrGetWindowFBInfo(FSwindow, &fbinfo);+
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        else+
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            GrGetWindowFBInfo(SDL_Window, &fbinfo);+
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    }+
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#endif+
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    Dprintf("leave NX_ResizeImage\n");+
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    return retval;+
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}+
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+
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void+
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NX_RefreshDisplay(_THIS)+
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{+
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    Dprintf("enter NX_RefreshDisplay\n");+
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+
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    // Don't refresh a display that doesn't have an image (like GL)+
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    if (!SDL_Image) {+
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        return;+
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    }+
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#ifdef ENABLE_NANOX_DIRECT_FB+
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    if (Clientfb) {+
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        int j;+
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        char *src, *dest = NULL;+
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        int xinc, yinc, rowinc;+
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+
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        GrGetWindowFBInfo(SDL_Window, &fbinfo);+
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+
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        xinc = this->screen->format->BytesPerPixel;+
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        yinc = this->screen->pitch;+
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+
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        src = SDL_Image;+
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        if (currently_fullscreen)+
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            dest = fbinfo.winpixels + ((OffsetY * fbinfo.pitch) ++
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                                       (OffsetX * fbinfo.bytespp));+
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        else+
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            dest = fbinfo.winpixels;+
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        rowinc = xinc * this->screen->w;+
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+
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        for (j = this->screen->h; j > 0;+
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             --j, src += yinc, dest += fbinfo.pitch)+
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            SDL_memcpy(dest, src, rowinc);+
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    } else+
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#endif+
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    {+
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        if (currently_fullscreen) {+
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            GrArea(FSwindow, SDL_GC, OffsetX, OffsetY, this->screen->w,+
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                   this->screen->h, SDL_Image, pixel_type);+
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        } else {+
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            GrArea(SDL_Window, SDL_GC, 0, 0, this->screen->w,+
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                   this->screen->h, SDL_Image, pixel_type);+
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        }+
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    }+
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    GrFlush();+
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+
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    Dprintf("leave NX_RefreshDisplay\n");+
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}+
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+
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/* vi: set ts=4 sw=4 expandtab: */+
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