annotate src/video/SDL_yuv.c @ 738:82b85b731fe3

Date: Mon, 10 Nov 2003 19:57:56 +0100 From: Stephane Marchesin <stephane.marchesin@wanadoo.fr> Subject: [SDL] SDL and gcc >= 3.3.1 fix Lately, I upgraded my gcc compiler and could trigger the error described in this thread : http://www.libsdl.org/pipermail/sdl/2003-September/056163.html SDL_RLEaccel.c: In function `RLEClipBlit': SDL_RLEaccel.c:845: error: invalid `asm': invalid expression as operand SDL_RLEaccel.c:845: error: invalid `asm': invalid expression as operand SDL_RLEaccel.c:845: error: invalid `asm': invalid expression as operand The attached patch fixes this issue, and is smaller than the previous one, as I was able to trigger the issue, so I could narrow it.
author Sam Lantinga <slouken@libsdl.org>
date Fri, 14 Nov 2003 20:21:22 +0000
parents 73440ac574a2
children cf9dd3aa6756
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 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 Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 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 Library 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 Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18
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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
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23 #ifdef SAVE_RCSID
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24 static char rcsid =
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25 "@(#) $Id$";
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26 #endif
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27
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28 /* This is the implementation of the YUV video surface support */
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29
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30 #include <stdlib.h>
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31 #include <string.h>
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32
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33 #include "SDL_getenv.h"
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34 #include "SDL_video.h"
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35 #include "SDL_error.h"
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36 #include "SDL_sysvideo.h"
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37 #include "SDL_yuvfuncs.h"
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38 #include "SDL_yuv_sw_c.h"
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39
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40
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41 SDL_Overlay *SDL_CreateYUVOverlay(int w, int h, Uint32 format,
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42 SDL_Surface *display)
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43 {
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44 SDL_VideoDevice *video = current_video;
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45 SDL_VideoDevice *this = current_video;
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46 const char *yuv_hwaccel;
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47 SDL_Overlay *overlay;
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48
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49 if ( (SDL_VideoSurface->flags & SDL_OPENGL) == SDL_OPENGL ) {
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50 SDL_SetError("YUV overlays are not supported in OpenGL mode");
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51 return NULL;
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52 }
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53
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54 /* Display directly on video surface, if possible */
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55 if ( getenv("SDL_VIDEO_YUV_DIRECT") ) {
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56 if ( (display == SDL_PublicSurface) &&
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57 ((SDL_VideoSurface->format->BytesPerPixel == 2) ||
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58 (SDL_VideoSurface->format->BytesPerPixel == 4)) ) {
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59 display = SDL_VideoSurface;
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60 }
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61 }
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62 overlay = NULL;
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63 yuv_hwaccel = getenv("SDL_VIDEO_YUV_HWACCEL");
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64 if ( ((display == SDL_VideoSurface) && video->CreateYUVOverlay) &&
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65 (!yuv_hwaccel || (atoi(yuv_hwaccel) > 0)) ) {
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66 overlay = video->CreateYUVOverlay(this, w, h, format, display);
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67 }
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68 /* If hardware YUV overlay failed ... */
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69 if ( overlay == NULL ) {
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70 overlay = SDL_CreateYUV_SW(this, w, h, format, display);
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71 }
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72 return overlay;
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73 }
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74
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75 int SDL_LockYUVOverlay(SDL_Overlay *overlay)
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76 {
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77 return overlay->hwfuncs->Lock(current_video, overlay);
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78 }
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79
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80 void SDL_UnlockYUVOverlay(SDL_Overlay *overlay)
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81 {
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82 overlay->hwfuncs->Unlock(current_video, overlay);
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83 }
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84
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85 int SDL_DisplayYUVOverlay(SDL_Overlay *overlay, SDL_Rect *dstrect)
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86 {
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87 return overlay->hwfuncs->Display(current_video, overlay, dstrect);
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88 }
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89
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90 void SDL_FreeYUVOverlay(SDL_Overlay *overlay)
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91 {
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92 if ( overlay ) {
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93 if ( overlay->hwfuncs ) {
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94 overlay->hwfuncs->FreeHW(current_video, overlay);
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95 }
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96 free(overlay);
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97 }
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98 }