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annotate src/video/windx5/SDL_dx5yuv.c @ 1680:9488fca10677 SDL-1.3

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Dummy video driver works again in high color video modes. Yay!
author Sam Lantinga <slouken@libsdl.org>
date Wed, 14 Jun 2006 08:41:13 +0000
parents 4da1ee79c9af
children
rev   line source
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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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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 #include "SDL_config.h"
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23
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24 /* This is the DirectDraw implementation of YUV video overlays */
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25
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26 #include "SDL_video.h"
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27 #include "SDL_dx5yuv_c.h"
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28 #include "../SDL_yuvfuncs.h"
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29
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30 //#define USE_DIRECTX_OVERLAY
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31
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32 /* The functions used to manipulate software video overlays */
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33 static struct private_yuvhwfuncs dx5_yuvfuncs = {
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34 DX5_LockYUVOverlay,
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35 DX5_UnlockYUVOverlay,
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36 DX5_DisplayYUVOverlay,
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37 DX5_FreeYUVOverlay
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38 };
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39
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40 struct private_yuvhwdata
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41 {
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42 LPDIRECTDRAWSURFACE3 surface;
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43
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44 /* These are just so we don't have to allocate them separately */
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45 Uint16 pitches[3];
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46 Uint8 *planes[3];
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47 };
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48
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49
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50 static LPDIRECTDRAWSURFACE3
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51 CreateYUVSurface(_THIS, int width, int height, Uint32 format)
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52 {
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53 HRESULT result;
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54 LPDIRECTDRAWSURFACE dd_surface1;
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55 LPDIRECTDRAWSURFACE3 dd_surface3;
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56 DDSURFACEDESC ddsd;
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57
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58 /* Set up the surface description */
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59 SDL_memset(&ddsd, 0, sizeof(ddsd));
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60 ddsd.dwSize = sizeof(ddsd);
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61 ddsd.dwFlags = (DDSD_WIDTH | DDSD_HEIGHT | DDSD_CAPS | DDSD_PIXELFORMAT);
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62 ddsd.dwWidth = width;
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63 ddsd.dwHeight = height;
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64 #ifdef USE_DIRECTX_OVERLAY
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65 ddsd.ddsCaps.dwCaps = (DDSCAPS_OVERLAY | DDSCAPS_VIDEOMEMORY);
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66 #else
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67 ddsd.ddsCaps.dwCaps = (DDSCAPS_OFFSCREENPLAIN | DDSCAPS_VIDEOMEMORY);
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68 #endif
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69 ddsd.ddpfPixelFormat.dwSize = sizeof(ddsd.ddpfPixelFormat);
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70 ddsd.ddpfPixelFormat.dwFlags = DDPF_FOURCC;
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71 ddsd.ddpfPixelFormat.dwFourCC = format;
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72
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73 /* Create the DirectDraw video surface */
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74 result = IDirectDraw2_CreateSurface(ddraw2, &ddsd, &dd_surface1, NULL);
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75 if (result != DD_OK) {
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76 SetDDerror("DirectDraw2::CreateSurface", result);
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77 return (NULL);
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78 }
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79 result = IDirectDrawSurface_QueryInterface(dd_surface1,
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80 &IID_IDirectDrawSurface3,
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81 (LPVOID *) & dd_surface3);
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82 IDirectDrawSurface_Release(dd_surface1);
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83 if (result != DD_OK) {
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84 SetDDerror("DirectDrawSurface::QueryInterface", result);
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85 return (NULL);
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86 }
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87
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88 /* Make sure the surface format was set properly */
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89 SDL_memset(&ddsd, 0, sizeof(ddsd));
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90 ddsd.dwSize = sizeof(ddsd);
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91 result = IDirectDrawSurface3_Lock(dd_surface3, NULL,
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92 &ddsd, DDLOCK_NOSYSLOCK, NULL);
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93 if (result != DD_OK) {
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94 SetDDerror("DirectDrawSurface3::Lock", result);
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95 IDirectDrawSurface_Release(dd_surface3);
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96 return (NULL);
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97 }
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98 IDirectDrawSurface3_Unlock(dd_surface3, NULL);
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99
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100 if (!(ddsd.ddpfPixelFormat.dwFlags & DDPF_FOURCC) ||
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101 (ddsd.ddpfPixelFormat.dwFourCC != format)) {
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102 SDL_SetError("DDraw didn't use requested FourCC format");
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103 IDirectDrawSurface_Release(dd_surface3);
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104 return (NULL);
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105 }
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106
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107 /* We're ready to go! */
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108 return (dd_surface3);
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109 }
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110
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111 #ifdef DEBUG_YUV
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112 static char *
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113 PrintFOURCC(Uint32 code)
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114 {
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115 static char buf[5];
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116
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117 buf[3] = code >> 24;
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118 buf[2] = (code >> 16) & 0xFF;
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119 buf[1] = (code >> 8) & 0xFF;
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120 buf[0] = (code & 0xFF);
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121 return (buf);
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122 }
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123 #endif
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124
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125 SDL_Overlay *
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126 DX5_CreateYUVOverlay(_THIS, int width, int height, Uint32 format,
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127 SDL_Surface * display)
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128 {
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129 SDL_Overlay *overlay;
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130 struct private_yuvhwdata *hwdata;
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131
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132 #ifdef DEBUG_YUV
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133 DWORD numcodes;
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134 DWORD *codes;
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135
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136 printf("FOURCC format requested: 0x%x\n", PrintFOURCC(format));
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137 IDirectDraw2_GetFourCCCodes(ddraw2, &numcodes, NULL);
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138 if (numcodes) {
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139 DWORD i;
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140 codes = SDL_malloc(numcodes * sizeof(*codes));
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141 if (codes) {
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142 IDirectDraw2_GetFourCCCodes(ddraw2, &numcodes, codes);
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143 for (i = 0; i < numcodes; ++i) {
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144 fprintf(stderr, "Code %d: 0x%x\n", i, PrintFOURCC(codes[i]));
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145 }
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146 SDL_free(codes);
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147 }
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148 } else {
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149 fprintf(stderr, "No FOURCC codes supported\n");
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150 }
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151 #endif
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152
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153 /* Create the overlay structure */
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154 overlay = (SDL_Overlay *) SDL_malloc(sizeof *overlay);
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155 if (overlay == NULL) {
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156 SDL_OutOfMemory();
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157 return (NULL);
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158 }
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159 SDL_memset(overlay, 0, (sizeof *overlay));
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160
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161 /* Fill in the basic members */
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162 overlay->format = format;
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163 overlay->w = width;
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164 overlay->h = height;
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165
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166 /* Set up the YUV surface function structure */
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167 overlay->hwfuncs = &dx5_yuvfuncs;
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168
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169 /* Create the pixel data and lookup tables */
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170 hwdata = (struct private_yuvhwdata *) SDL_malloc(sizeof *hwdata);
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171 overlay->hwdata = hwdata;
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172 if (hwdata == NULL) {
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173 SDL_OutOfMemory();
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174 SDL_FreeYUVOverlay(overlay);
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175 return (NULL);
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176 }
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177 hwdata->surface = CreateYUVSurface(this, width, height, format);
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178 if (hwdata->surface == NULL) {
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179 SDL_FreeYUVOverlay(overlay);
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180 return (NULL);
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181 }
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182 overlay->hw_overlay = 1;
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183
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184 /* Set up the plane pointers */
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185 overlay->pitches = hwdata->pitches;
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186 overlay->pixels = hwdata->planes;
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187 switch (format) {
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188 case SDL_YV12_OVERLAY:
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189 case SDL_IYUV_OVERLAY:
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190 overlay->planes = 3;
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191 break;
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192 default:
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193 overlay->planes = 1;
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194 break;
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195 }
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196
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197 /* We're all done.. */
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198 return (overlay);
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199 }
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200
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201 int
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202 DX5_LockYUVOverlay(_THIS, SDL_Overlay * overlay)
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203 {
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204 HRESULT result;
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205 LPDIRECTDRAWSURFACE3 surface;
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206 DDSURFACEDESC ddsd;
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207
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208 surface = overlay->hwdata->surface;
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209 SDL_memset(&ddsd, 0, sizeof(ddsd));
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210 ddsd.dwSize = sizeof(ddsd);
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211 result = IDirectDrawSurface3_Lock(surface, NULL,
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212 &ddsd, DDLOCK_NOSYSLOCK, NULL);
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213 if (result == DDERR_SURFACELOST) {
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214 result = IDirectDrawSurface3_Restore(surface);
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215 result = IDirectDrawSurface3_Lock(surface, NULL, &ddsd,
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216 (DDLOCK_NOSYSLOCK | DDLOCK_WAIT),
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217 NULL);
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218 }
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219 if (result != DD_OK) {
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220 SetDDerror("DirectDrawSurface3::Lock", result);
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221 return (-1);
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222 }
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223
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224 /* Find the pitch and offset values for the overlay */
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225 #if defined(NONAMELESSUNION)
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226 overlay->pitches[0] = (Uint16) ddsd.u1.lPitch;
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227 #else
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228 overlay->pitches[0] = (Uint16) ddsd.lPitch;
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229 #endif
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230 overlay->pixels[0] = (Uint8 *) ddsd.lpSurface;
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231 switch (overlay->format) {
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232 case SDL_YV12_OVERLAY:
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233 case SDL_IYUV_OVERLAY:
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234 /* Add the two extra planes */
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235 overlay->pitches[1] = overlay->pitches[0] / 2;
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236 overlay->pitches[2] = overlay->pitches[0] / 2;
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237 overlay->pixels[1] = overlay->pixels[0] +
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238 overlay->pitches[0] * overlay->h;
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239 overlay->pixels[2] = overlay->pixels[1] +
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240 overlay->pitches[1] * overlay->h / 2;
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241 break;
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242 default:
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243 /* Only one plane, no worries */
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244 break;
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245 }
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246 return (0);
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247 }
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248
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249 void
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250 DX5_UnlockYUVOverlay(_THIS, SDL_Overlay * overlay)
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251 {
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252 LPDIRECTDRAWSURFACE3 surface;
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253
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254 surface = overlay->hwdata->surface;
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255 IDirectDrawSurface3_Unlock(surface, NULL);
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256 }
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257
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258 int
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259 DX5_DisplayYUVOverlay(_THIS, SDL_Overlay * overlay, SDL_Rect * src,
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260 SDL_Rect * dst)
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261 {
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262 HRESULT result;
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263 LPDIRECTDRAWSURFACE3 surface;
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264 RECT srcrect, dstrect;
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265
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266 surface = overlay->hwdata->surface;
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267 srcrect.top = src->y;
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268 srcrect.bottom = srcrect.top + src->h;
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269 srcrect.left = src->x;
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270 srcrect.right = srcrect.left + src->w;
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271 dstrect.top = SDL_bounds.top + dst->y;
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272 dstrect.left = SDL_bounds.left + dst->x;
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273 dstrect.bottom = dstrect.top + dst->h;
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274 dstrect.right = dstrect.left + dst->w;
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275 #ifdef USE_DIRECTX_OVERLAY
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276 result = IDirectDrawSurface3_UpdateOverlay(surface, &srcrect,
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277 SDL_primary, &dstrect,
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278 DDOVER_SHOW, NULL);
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279 if (result != DD_OK) {
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280 SetDDerror("DirectDrawSurface3::UpdateOverlay", result);
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281 return (-1);
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282 }
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283 #else
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284 result =
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285 IDirectDrawSurface3_Blt(SDL_primary, &dstrect, surface, &srcrect,
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286 DDBLT_WAIT, NULL);
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287 if (result != DD_OK) {
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288 SetDDerror("DirectDrawSurface3::Blt", result);
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289 return (-1);
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290 }
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291 #endif
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292 return (0);
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293 }
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294
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295 void
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296 DX5_FreeYUVOverlay(_THIS, SDL_Overlay * overlay)
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297 {
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298 struct private_yuvhwdata *hwdata;
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299
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300 hwdata = overlay->hwdata;
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301 if (hwdata) {
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302 if (hwdata->surface) {
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303 IDirectDrawSurface_Release(hwdata->surface);
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304 }
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305 SDL_free(hwdata);
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306 }
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307 }
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308
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309 /* vi: set ts=4 sw=4 expandtab: */