src/video/windx5/SDL_dx5yuv.c
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FUNCTIONS
This source file includes following functions.
- CreateYUVSurface
- PrintFOURCC
- DX5_CreateYUVOverlay
- DX5_LockYUVOverlay
- DX5_UnlockYUVOverlay
- DX5_DisplayYUVOverlay
- DX5_FreeYUVOverlay
1 /*
2 SDL - Simple DirectMedia Layer
3 Copyright (C) 1997, 1998, 1999, 2000, 2001 Sam Lantinga
4
5 This library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Library General Public
7 License as published by the Free Software Foundation; either
8 version 2 of the License, or (at your option) any later version.
9
10 This library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Library General Public License for more details.
14
15 You should have received a copy of the GNU Library General Public
16 License along with this library; if not, write to the Free
17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18
19 Sam Lantinga
20 slouken@devolution.com
21 */
22
23 #ifdef SAVE_RCSID
24 static char rcsid =
25 "@(#) $Id: SDL_dx5yuv.c,v 1.1.2.6 2001/02/10 07:20:09 hercules Exp $";
26 #endif
27
28 /* This is the DirectDraw implementation of YUV video overlays */
29
30 #include <stdlib.h>
31 #include <string.h>
32
33 #include "SDL_error.h"
34 #include "SDL_video.h"
35 #include "SDL_dx5yuv_c.h"
36 #include "SDL_yuvfuncs.h"
37
38 #define USE_DIRECTX_OVERLAY
39
40 /* The functions used to manipulate software video overlays */
41 static struct private_yuvhwfuncs dx5_yuvfuncs = {
42 DX5_LockYUVOverlay,
43 DX5_UnlockYUVOverlay,
44 DX5_DisplayYUVOverlay,
45 DX5_FreeYUVOverlay
46 };
47
48 struct private_yuvhwdata {
49 LPDIRECTDRAWSURFACE3 surface;
50
51 /* These are just so we don't have to allocate them separately */
52 Uint16 pitches[3];
53 Uint8 *planes[3];
54 };
55
56
57 static LPDIRECTDRAWSURFACE3 CreateYUVSurface(_THIS,
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58 int width, int height, Uint32 format)
59 {
60 HRESULT result;
61 LPDIRECTDRAWSURFACE dd_surface1;
62 LPDIRECTDRAWSURFACE3 dd_surface3;
63 DDSURFACEDESC ddsd;
64
65 /* Set up the surface description */
66 memset(&ddsd, 0, sizeof(ddsd));
67 ddsd.dwSize = sizeof(ddsd);
68 ddsd.dwFlags = (DDSD_WIDTH|DDSD_HEIGHT|DDSD_CAPS|DDSD_PIXELFORMAT);
69 ddsd.dwWidth = width;
70 ddsd.dwHeight= height;
71 #ifdef USE_DIRECTX_OVERLAY
72 ddsd.ddsCaps.dwCaps = (DDSCAPS_OVERLAY|DDSCAPS_VIDEOMEMORY);
73 #else
74 ddsd.ddsCaps.dwCaps = (DDSCAPS_OFFSCREENPLAIN|DDSCAPS_VIDEOMEMORY);
75 #endif
76 ddsd.ddpfPixelFormat.dwSize = sizeof(ddsd.ddpfPixelFormat);
77 ddsd.ddpfPixelFormat.dwFlags = DDPF_FOURCC;
78 ddsd.ddpfPixelFormat.dwFourCC = format;
79
80 /* Create the DirectDraw video surface */
81 result = IDirectDraw2_CreateSurface(ddraw2, &ddsd, &dd_surface1, NULL);
82 if ( result != DD_OK ) {
83 SetDDerror("DirectDraw2::CreateSurface", result);
84 return(NULL);
85 }
86 result = IDirectDrawSurface_QueryInterface(dd_surface1,
87 &IID_IDirectDrawSurface3, (LPVOID *)&dd_surface3);
88 IDirectDrawSurface_Release(dd_surface1);
89 if ( result != DD_OK ) {
90 SetDDerror("DirectDrawSurface::QueryInterface", result);
91 return(NULL);
92 }
93
94 /* Make sure the surface format was set properly */
95 memset(&ddsd, 0, sizeof(ddsd));
96 ddsd.dwSize = sizeof(ddsd);
97 result = IDirectDrawSurface3_Lock(dd_surface3, NULL,
98 &ddsd, DDLOCK_NOSYSLOCK, NULL);
99 if ( result != DD_OK ) {
100 SetDDerror("DirectDrawSurface3::Lock", result);
101 IDirectDrawSurface_Release(dd_surface3);
102 return(NULL);
103 }
104 IDirectDrawSurface3_Unlock(dd_surface3, NULL);
105
106 if ( !(ddsd.ddpfPixelFormat.dwFlags & DDPF_FOURCC) ||
107 (ddsd.ddpfPixelFormat.dwFourCC != format) ) {
108 SDL_SetError("DDraw didn't use requested FourCC format");
109 IDirectDrawSurface_Release(dd_surface3);
110 return(NULL);
111 }
112
113 /* We're ready to go! */
114 return(dd_surface3);
115 }
116
117 #ifdef DEBUG_YUV
118 static char *PrintFOURCC(Uint32 code)
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119 {
120 static char buf[5];
121
122 buf[3] = code >> 24;
123 buf[2] = (code >> 16) & 0xFF;
124 buf[1] = (code >> 8) & 0xFF;
125 buf[0] = (code & 0xFF);
126 return(buf);
127 }
128 #endif
129
130 SDL_Overlay *DX5_CreateYUVOverlay(_THIS, int width, int height, Uint32 format, SDL_Surface *display)
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131 {
132 SDL_Overlay *overlay;
133 struct private_yuvhwdata *hwdata;
134
135 #ifdef DEBUG_YUV
136 DWORD numcodes;
137 DWORD *codes;
138
139 printf("FOURCC format requested: 0x%x\n", PrintFOURCC(format));
140 IDirectDraw2_GetFourCCCodes(ddraw2, &numcodes, NULL);
141 if ( numcodes ) {
142 DWORD i;
143 codes = malloc(numcodes*sizeof(*codes));
144 if ( codes ) {
145 IDirectDraw2_GetFourCCCodes(ddraw2, &numcodes, codes);
146 for ( i=0; i<numcodes; ++i ) {
147 fprintf(stderr, "Code %d: 0x%x\n", i, PrintFOURCC(codes[i]));
148 }
149 free(codes);
150 }
151 } else {
152 fprintf(stderr, "No FOURCC codes supported\n");
153 }
154 #endif
155
156 /* Create the overlay structure */
157 overlay = (SDL_Overlay *)malloc(sizeof *overlay);
158 if ( overlay == NULL ) {
159 SDL_OutOfMemory();
160 return(NULL);
161 }
162 memset(overlay, 0, (sizeof *overlay));
163
164 /* Fill in the basic members */
165 overlay->format = format;
166 overlay->w = width;
167 overlay->h = height;
168
169 /* Set up the YUV surface function structure */
170 overlay->hwfuncs = &dx5_yuvfuncs;
171
172 /* Create the pixel data and lookup tables */
173 hwdata = (struct private_yuvhwdata *)malloc(sizeof *hwdata);
174 overlay->hwdata = hwdata;
175 if ( hwdata == NULL ) {
176 SDL_OutOfMemory();
177 SDL_FreeYUVOverlay(overlay);
178 return(NULL);
179 }
180 hwdata->surface = CreateYUVSurface(this, width, height, format);
181 if ( hwdata->surface == NULL ) {
182 SDL_FreeYUVOverlay(overlay);
183 return(NULL);
184 }
185 overlay->hw_overlay = 1;
186
187 /* Set up the plane pointers */
188 overlay->pitches = hwdata->pitches;
189 overlay->pixels = hwdata->planes;
190 switch (format) {
191 case SDL_YV12_OVERLAY:
192 case SDL_IYUV_OVERLAY:
193 overlay->planes = 3;
194 default:
195 overlay->planes = 1;
196 break;
197 }
198
199 /* We're all done.. */
200 return(overlay);
201 }
202
203 int DX5_LockYUVOverlay(_THIS, SDL_Overlay *overlay)
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204 {
205 HRESULT result;
206 LPDIRECTDRAWSURFACE3 surface;
207 DDSURFACEDESC ddsd;
208
209 surface = overlay->hwdata->surface;
210 memset(&ddsd, 0, sizeof(ddsd));
211 ddsd.dwSize = sizeof(ddsd);
212 result = IDirectDrawSurface3_Lock(surface, NULL,
213 &ddsd, DDLOCK_NOSYSLOCK, NULL);
214 if ( result == DDERR_SURFACELOST ) {
215 result = IDirectDrawSurface3_Restore(surface);
216 result = IDirectDrawSurface3_Lock(surface, NULL, &ddsd,
217 (DDLOCK_NOSYSLOCK|DDLOCK_WAIT), NULL);
218 }
219 if ( result != DD_OK ) {
220 SetDDerror("DirectDrawSurface3::Lock", result);
221 return(-1);
222 }
223
224 /* Find the pitch and offset values for the overlay */
225 #if defined(NONAMELESSUNION)
226 overlay->pitches[0] = (Uint16)ddsd.u1.lPitch;
227 #else
228 overlay->pitches[0] = (Uint16)ddsd.lPitch;
229 #endif
230 overlay->pixels[0] = (Uint8 *)ddsd.lpSurface;
231 switch (overlay->format) {
232 case SDL_YV12_OVERLAY:
233 case SDL_IYUV_OVERLAY:
234 /* Add the two extra planes */
235 overlay->pitches[1] = overlay->pitches[0] / 2;
236 overlay->pitches[2] = overlay->pitches[0] / 2;
237 overlay->pixels[1] = overlay->pixels[0] +
238 overlay->pitches[0] * overlay->h;
239 overlay->pixels[2] = overlay->pixels[1] +
240 overlay->pitches[1] * overlay->h / 2;
241 break;
242 default:
243 /* Only one plane, no worries */
244 break;
245 }
246 return(0);
247 }
248
249 void DX5_UnlockYUVOverlay(_THIS, SDL_Overlay *overlay)
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250 {
251 LPDIRECTDRAWSURFACE3 surface;
252
253 surface = overlay->hwdata->surface;
254 IDirectDrawSurface3_Unlock(surface, NULL);
255 }
256
257 int DX5_DisplayYUVOverlay(_THIS, SDL_Overlay *overlay, SDL_Rect *dstrect)
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258 {
259 HRESULT result;
260 LPDIRECTDRAWSURFACE3 surface;
261 RECT src, dst;
262
263 surface = overlay->hwdata->surface;
264 src.top = 0;
265 src.bottom = overlay->h;
266 src.left = 0;
267 src.right = overlay->w;
268 dst.top = SDL_bounds.top+dstrect->y;
269 dst.left = SDL_bounds.left+dstrect->x;
270 dst.bottom = dst.top+dstrect->h;
271 dst.right = dst.left+dstrect->w;
272 #ifdef USE_DIRECTX_OVERLAY
273 result = IDirectDrawSurface3_UpdateOverlay(surface, &src,
274 SDL_primary, &dst, DDOVER_SHOW, NULL);
275 if ( result != DD_OK ) {
276 SetDDerror("DirectDrawSurface3::UpdateOverlay", result);
277 return(-1);
278 }
279 #else
280 result = IDirectDrawSurface3_Blt(SDL_primary, &dst, surface, &src,
281 DDBLT_WAIT, NULL);
282 if ( result != DD_OK ) {
283 SetDDerror("DirectDrawSurface3::Blt", result);
284 return(-1);
285 }
286 #endif
287 return(0);
288 }
289
290 void DX5_FreeYUVOverlay(_THIS, SDL_Overlay *overlay)
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291 {
292 struct private_yuvhwdata *hwdata;
293
294 hwdata = overlay->hwdata;
295 if ( hwdata ) {
296 if ( hwdata->surface ) {
297 IDirectDrawSurface_Release(hwdata->surface);
298 }
299 free(hwdata);
300 }
301 }
302