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