annotate src/video/windx5/SDL_dx5yuv.c @ 1330:450721ad5436

It's now possible to build SDL without any C runtime at all on Windows, using Visual C++ 2005
author Sam Lantinga <slouken@libsdl.org>
date Mon, 06 Feb 2006 08:28:51 +0000
parents c9b51268668f
children 3692456e7b0f
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
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23 /* This is the DirectDraw implementation of YUV video overlays */
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24
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25 #include "SDL_error.h"
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26 #include "SDL_video.h"
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27 #include "SDL_stdlib.h"
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28 #include "SDL_string.h"
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29 #include "SDL_dx5yuv_c.h"
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30 #include "SDL_yuvfuncs.h"
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31
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32 //#define USE_DIRECTX_OVERLAY
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33
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34 /* The functions used to manipulate software video overlays */
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35 static struct private_yuvhwfuncs dx5_yuvfuncs = {
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36 DX5_LockYUVOverlay,
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37 DX5_UnlockYUVOverlay,
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38 DX5_DisplayYUVOverlay,
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39 DX5_FreeYUVOverlay
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40 };
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41
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42 struct private_yuvhwdata {
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43 LPDIRECTDRAWSURFACE3 surface;
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44
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45 /* These are just so we don't have to allocate them separately */
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46 Uint16 pitches[3];
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47 Uint8 *planes[3];
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48 };
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49
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50
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51 static LPDIRECTDRAWSURFACE3 CreateYUVSurface(_THIS,
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52 int width, int height, Uint32 format)
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53 {
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54 HRESULT result;
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55 LPDIRECTDRAWSURFACE dd_surface1;
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56 LPDIRECTDRAWSURFACE3 dd_surface3;
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57 DDSURFACEDESC ddsd;
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58
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59 /* Set up the surface description */
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60 memset(&ddsd, 0, sizeof(ddsd));
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61 ddsd.dwSize = sizeof(ddsd);
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62 ddsd.dwFlags = (DDSD_WIDTH|DDSD_HEIGHT|DDSD_CAPS|DDSD_PIXELFORMAT);
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63 ddsd.dwWidth = width;
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64 ddsd.dwHeight= height;
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65 #ifdef USE_DIRECTX_OVERLAY
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66 ddsd.ddsCaps.dwCaps = (DDSCAPS_OVERLAY|DDSCAPS_VIDEOMEMORY);
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67 #else
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68 ddsd.ddsCaps.dwCaps = (DDSCAPS_OFFSCREENPLAIN|DDSCAPS_VIDEOMEMORY);
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69 #endif
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70 ddsd.ddpfPixelFormat.dwSize = sizeof(ddsd.ddpfPixelFormat);
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71 ddsd.ddpfPixelFormat.dwFlags = DDPF_FOURCC;
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72 ddsd.ddpfPixelFormat.dwFourCC = format;
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73
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74 /* Create the DirectDraw video surface */
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75 result = IDirectDraw2_CreateSurface(ddraw2, &ddsd, &dd_surface1, NULL);
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76 if ( result != DD_OK ) {
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77 SetDDerror("DirectDraw2::CreateSurface", result);
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78 return(NULL);
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79 }
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80 result = IDirectDrawSurface_QueryInterface(dd_surface1,
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81 &IID_IDirectDrawSurface3, (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 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 *PrintFOURCC(Uint32 code)
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113 {
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114 static char buf[5];
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115
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116 buf[3] = code >> 24;
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117 buf[2] = (code >> 16) & 0xFF;
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118 buf[1] = (code >> 8) & 0xFF;
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119 buf[0] = (code & 0xFF);
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120 return(buf);
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121 }
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122 #endif
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123
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124 SDL_Overlay *DX5_CreateYUVOverlay(_THIS, int width, int height, Uint32 format, SDL_Surface *display)
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125 {
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126 SDL_Overlay *overlay;
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127 struct private_yuvhwdata *hwdata;
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128
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129 #ifdef DEBUG_YUV
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130 DWORD numcodes;
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131 DWORD *codes;
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132
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133 printf("FOURCC format requested: 0x%x\n", PrintFOURCC(format));
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134 IDirectDraw2_GetFourCCCodes(ddraw2, &numcodes, NULL);
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135 if ( numcodes ) {
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136 DWORD i;
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137 codes = malloc(numcodes*sizeof(*codes));
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138 if ( codes ) {
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139 IDirectDraw2_GetFourCCCodes(ddraw2, &numcodes, codes);
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140 for ( i=0; i<numcodes; ++i ) {
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141 fprintf(stderr, "Code %d: 0x%x\n", i, PrintFOURCC(codes[i]));
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142 }
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143 free(codes);
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144 }
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145 } else {
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146 fprintf(stderr, "No FOURCC codes supported\n");
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147 }
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148 #endif
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149
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150 /* Create the overlay structure */
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151 overlay = (SDL_Overlay *)malloc(sizeof *overlay);
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152 if ( overlay == NULL ) {
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153 SDL_OutOfMemory();
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154 return(NULL);
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155 }
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156 memset(overlay, 0, (sizeof *overlay));
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157
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158 /* Fill in the basic members */
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159 overlay->format = format;
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160 overlay->w = width;
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161 overlay->h = height;
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162
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163 /* Set up the YUV surface function structure */
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164 overlay->hwfuncs = &dx5_yuvfuncs;
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165
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166 /* Create the pixel data and lookup tables */
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167 hwdata = (struct private_yuvhwdata *)malloc(sizeof *hwdata);
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168 overlay->hwdata = hwdata;
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169 if ( hwdata == NULL ) {
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170 SDL_OutOfMemory();
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171 SDL_FreeYUVOverlay(overlay);
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172 return(NULL);
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173 }
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174 hwdata->surface = CreateYUVSurface(this, width, height, format);
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175 if ( hwdata->surface == NULL ) {
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176 SDL_FreeYUVOverlay(overlay);
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177 return(NULL);
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178 }
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179 overlay->hw_overlay = 1;
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180
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181 /* Set up the plane pointers */
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182 overlay->pitches = hwdata->pitches;
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183 overlay->pixels = hwdata->planes;
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184 switch (format) {
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185 case SDL_YV12_OVERLAY:
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186 case SDL_IYUV_OVERLAY:
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187 overlay->planes = 3;
33
81a7158fa836 Silly bug fix from Billy Biggs
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188 break;
0
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189 default:
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190 overlay->planes = 1;
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191 break;
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192 }
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193
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194 /* We're all done.. */
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195 return(overlay);
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196 }
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197
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198 int DX5_LockYUVOverlay(_THIS, SDL_Overlay *overlay)
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199 {
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200 HRESULT result;
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201 LPDIRECTDRAWSURFACE3 surface;
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202 DDSURFACEDESC ddsd;
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203
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204 surface = overlay->hwdata->surface;
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205 memset(&ddsd, 0, sizeof(ddsd));
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206 ddsd.dwSize = sizeof(ddsd);
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207 result = IDirectDrawSurface3_Lock(surface, NULL,
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208 &ddsd, DDLOCK_NOSYSLOCK, NULL);
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209 if ( result == DDERR_SURFACELOST ) {
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210 result = IDirectDrawSurface3_Restore(surface);
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211 result = IDirectDrawSurface3_Lock(surface, NULL, &ddsd,
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212 (DDLOCK_NOSYSLOCK|DDLOCK_WAIT), NULL);
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213 }
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214 if ( result != DD_OK ) {
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215 SetDDerror("DirectDrawSurface3::Lock", result);
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216 return(-1);
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217 }
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218
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219 /* Find the pitch and offset values for the overlay */
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220 #if defined(NONAMELESSUNION)
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221 overlay->pitches[0] = (Uint16)ddsd.u1.lPitch;
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222 #else
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223 overlay->pitches[0] = (Uint16)ddsd.lPitch;
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224 #endif
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225 overlay->pixels[0] = (Uint8 *)ddsd.lpSurface;
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226 switch (overlay->format) {
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227 case SDL_YV12_OVERLAY:
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228 case SDL_IYUV_OVERLAY:
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229 /* Add the two extra planes */
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230 overlay->pitches[1] = overlay->pitches[0] / 2;
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231 overlay->pitches[2] = overlay->pitches[0] / 2;
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232 overlay->pixels[1] = overlay->pixels[0] +
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233 overlay->pitches[0] * overlay->h;
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234 overlay->pixels[2] = overlay->pixels[1] +
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235 overlay->pitches[1] * overlay->h / 2;
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236 break;
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237 default:
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238 /* Only one plane, no worries */
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239 break;
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240 }
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241 return(0);
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242 }
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243
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244 void DX5_UnlockYUVOverlay(_THIS, SDL_Overlay *overlay)
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245 {
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246 LPDIRECTDRAWSURFACE3 surface;
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247
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248 surface = overlay->hwdata->surface;
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249 IDirectDrawSurface3_Unlock(surface, NULL);
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250 }
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251
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252 int DX5_DisplayYUVOverlay(_THIS, SDL_Overlay *overlay, SDL_Rect *dstrect)
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253 {
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254 HRESULT result;
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255 LPDIRECTDRAWSURFACE3 surface;
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256 RECT src, dst;
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diff changeset
257
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258 surface = overlay->hwdata->surface;
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259 src.top = 0;
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260 src.bottom = overlay->h;
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261 src.left = 0;
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262 src.right = overlay->w;
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263 dst.top = SDL_bounds.top+dstrect->y;
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264 dst.left = SDL_bounds.left+dstrect->x;
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265 dst.bottom = dst.top+dstrect->h;
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266 dst.right = dst.left+dstrect->w;
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267 #ifdef USE_DIRECTX_OVERLAY
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268 result = IDirectDrawSurface3_UpdateOverlay(surface, &src,
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269 SDL_primary, &dst, DDOVER_SHOW, NULL);
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diff changeset
270 if ( result != DD_OK ) {
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diff changeset
271 SetDDerror("DirectDrawSurface3::UpdateOverlay", result);
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272 return(-1);
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diff changeset
273 }
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diff changeset
274 #else
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275 result = IDirectDrawSurface3_Blt(SDL_primary, &dst, surface, &src,
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diff changeset
276 DDBLT_WAIT, NULL);
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diff changeset
277 if ( result != DD_OK ) {
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diff changeset
278 SetDDerror("DirectDrawSurface3::Blt", result);
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279 return(-1);
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diff changeset
280 }
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diff changeset
281 #endif
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282 return(0);
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diff changeset
283 }
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diff changeset
284
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285 void DX5_FreeYUVOverlay(_THIS, SDL_Overlay *overlay)
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diff changeset
286 {
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diff changeset
287 struct private_yuvhwdata *hwdata;
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diff changeset
288
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diff changeset
289 hwdata = overlay->hwdata;
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diff changeset
290 if ( hwdata ) {
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parents:
diff changeset
291 if ( hwdata->surface ) {
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parents:
diff changeset
292 IDirectDrawSurface_Release(hwdata->surface);
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parents:
diff changeset
293 }
74212992fb08 Initial revision
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diff changeset
294 free(hwdata);
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parents:
diff changeset
295 }
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diff changeset
296 }
74212992fb08 Initial revision
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parents:
diff changeset
297