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annotate src/video/bwindow/SDL_sysyuv.h @ 1554:0ca607a5d173

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Fixed bug #84 Date: Sun, 23 Oct 2005 16:39:03 +0200 From: "A. Schmid" <sahib@phreaker.net> Subject: [SDL] no software surfaces with svgalib driver? Hi, I noticed that the SDL (1.2.9) svgalib driver only makes use of linear addressable (framebuffer) video modes. On older systems (like one of mine), linear addressable modes are often not available. Especially for cards with VESA VBE < 2.0 the svgalib vesa driver is unusable, since VESA only supports framebuffering for VBE 2.0 and later. The changes necessary to add support for software surfaces seem to be relatively small. I only had to hack src/video/svga/SDL_svgavideo.c (see attached patch). The code worked fine for me, but it is no more than a proof of concept and should be reviewed (probably has a memory leak when switching modes). It also uses the vgagl library (included in the svgalib package) and needs to be linked against it. -Alex
author Sam Lantinga <slouken@libsdl.org>
date Sun, 19 Mar 2006 12:04:40 +0000
parents d910939febfa
children 51038e80ae59
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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24
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25 #ifndef __SDL_SYS_YUV_H__
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26 #define __SDL_SYS_YUV_H__
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27
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28 /* This is the BeOS implementation of YUV video overlays */
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29
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30 #include "SDL_video.h"
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31 #include "SDL_lowvideo.h"
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32
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33 extern "C" {
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34
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35 struct private_yuvhwdata
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36 {
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37 /* FRAMEDATA* CurrentFrameData;
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38 FRAMEDATA* FrameData0;
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39 FRAMEDATA* FrameData1;
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40 PgScalerProps_t props;
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41 PgScalerCaps_t caps;
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42 PgVideoChannel_t* channel;
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43 PhArea_t CurrentViewPort;
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44 PhPoint_t CurrentWindowPos;
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45 long format;
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46 int scaler_on;
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47 int current;
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48 long YStride;
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49 long VStride;
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50 long UStride;
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51 int ischromakey;
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52 long chromakey;
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53 int forcedredraw;
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54 unsigned long State;
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55 long flags;
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56 */
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57 SDL_Surface *display;
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58 BView *bview;
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59 bool first_display;
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60 BBitmap *bbitmap;
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61 int locked;
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62 };
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63
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64 extern BBitmap * BE_GetOverlayBitmap(BRect bounds, color_space cs);
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65 extern SDL_Overlay* BE_CreateYUVOverlay(_THIS, int width, int height, Uint32 format, SDL_Surface* display);
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66 extern int BE_LockYUVOverlay(_THIS, SDL_Overlay* overlay);
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67 extern void BE_UnlockYUVOverlay(_THIS, SDL_Overlay* overlay);
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68 extern int BE_DisplayYUVOverlay(_THIS, SDL_Overlay* overlay, SDL_Rect* dstrect);
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69 extern void BE_FreeYUVOverlay(_THIS, SDL_Overlay* overlay);
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70
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71 };
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72
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73 #endif /* __SDL_PH_YUV_H__ */