This repository has been archived by the owner on Feb 11, 2021. It is now read-only.
/
SDL_dx5yuv.c
309 lines (271 loc) · 8.97 KB
1
2
/*
SDL - Simple DirectMedia Layer
3
Copyright (C) 1997-2006 Sam Lantinga
4
5
This library is free software; you can redistribute it and/or
6
modify it under the terms of the GNU Lesser General Public
7
License as published by the Free Software Foundation; either
8
version 2.1 of the License, or (at your option) any later version.
9
10
11
12
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13
Lesser General Public License for more details.
14
15
16
17
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18
19
Sam Lantinga
20
slouken@libsdl.org
21
*/
22
#include "SDL_config.h"
23
24
25
/* This is the DirectDraw implementation of YUV video overlays */
26
#include "SDL_video.h"
27
#include "SDL_dx5yuv_c.h"
28
#include "../SDL_yuvfuncs.h"
29
30
//#define USE_DIRECTX_OVERLAY
31
32
33
/* The functions used to manipulate software video overlays */
static struct private_yuvhwfuncs dx5_yuvfuncs = {
34
35
36
37
DX5_LockYUVOverlay,
DX5_UnlockYUVOverlay,
DX5_DisplayYUVOverlay,
DX5_FreeYUVOverlay
38
39
};
40
41
42
struct private_yuvhwdata
{
LPDIRECTDRAWSURFACE3 surface;
43
44
45
46
/* These are just so we don't have to allocate them separately */
Uint16 pitches[3];
Uint8 *planes[3];
47
48
49
};
50
51
static LPDIRECTDRAWSURFACE3
CreateYUVSurface(_THIS, int width, int height, Uint32 format)
52
{
53
54
55
56
57
58
59
60
61
62
63
HRESULT result;
LPDIRECTDRAWSURFACE dd_surface1;
LPDIRECTDRAWSURFACE3 dd_surface3;
DDSURFACEDESC ddsd;
/* Set up the surface description */
SDL_memset(&ddsd, 0, sizeof(ddsd));
ddsd.dwSize = sizeof(ddsd);
ddsd.dwFlags = (DDSD_WIDTH | DDSD_HEIGHT | DDSD_CAPS | DDSD_PIXELFORMAT);
ddsd.dwWidth = width;
ddsd.dwHeight = height;
64
#ifdef USE_DIRECTX_OVERLAY
65
ddsd.ddsCaps.dwCaps = (DDSCAPS_OVERLAY | DDSCAPS_VIDEOMEMORY);
66
#else
67
ddsd.ddsCaps.dwCaps = (DDSCAPS_OFFSCREENPLAIN | DDSCAPS_VIDEOMEMORY);
68
#endif
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
ddsd.ddpfPixelFormat.dwSize = sizeof(ddsd.ddpfPixelFormat);
ddsd.ddpfPixelFormat.dwFlags = DDPF_FOURCC;
ddsd.ddpfPixelFormat.dwFourCC = format;
/* Create the DirectDraw video surface */
result = IDirectDraw2_CreateSurface(ddraw2, &ddsd, &dd_surface1, NULL);
if (result != DD_OK) {
SetDDerror("DirectDraw2::CreateSurface", result);
return (NULL);
}
result = IDirectDrawSurface_QueryInterface(dd_surface1,
&IID_IDirectDrawSurface3,
(LPVOID *) & dd_surface3);
IDirectDrawSurface_Release(dd_surface1);
if (result != DD_OK) {
SetDDerror("DirectDrawSurface::QueryInterface", result);
return (NULL);
}
/* Make sure the surface format was set properly */
SDL_memset(&ddsd, 0, sizeof(ddsd));
ddsd.dwSize = sizeof(ddsd);
result = IDirectDrawSurface3_Lock(dd_surface3, NULL,
&ddsd, DDLOCK_NOSYSLOCK, NULL);
if (result != DD_OK) {
SetDDerror("DirectDrawSurface3::Lock", result);
IDirectDrawSurface_Release(dd_surface3);
return (NULL);
}
IDirectDrawSurface3_Unlock(dd_surface3, NULL);
if (!(ddsd.ddpfPixelFormat.dwFlags & DDPF_FOURCC) ||
(ddsd.ddpfPixelFormat.dwFourCC != format)) {
SDL_SetError("DDraw didn't use requested FourCC format");
IDirectDrawSurface_Release(dd_surface3);
return (NULL);
}
/* We're ready to go! */
return (dd_surface3);
109
110
111
}
#ifdef DEBUG_YUV
112
113
static char *
PrintFOURCC(Uint32 code)
114
{
115
static char buf[5];
116
117
118
119
120
121
buf[3] = code >> 24;
buf[2] = (code >> 16) & 0xFF;
buf[1] = (code >> 8) & 0xFF;
buf[0] = (code & 0xFF);
return (buf);
122
123
124
}
#endif
125
126
127
SDL_Overlay *
DX5_CreateYUVOverlay(_THIS, int width, int height, Uint32 format,
SDL_Surface * display)
128
{
129
130
SDL_Overlay *overlay;
struct private_yuvhwdata *hwdata;
131
132
#ifdef DEBUG_YUV
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
DWORD numcodes;
DWORD *codes;
printf("FOURCC format requested: 0x%x\n", PrintFOURCC(format));
IDirectDraw2_GetFourCCCodes(ddraw2, &numcodes, NULL);
if (numcodes) {
DWORD i;
codes = SDL_malloc(numcodes * sizeof(*codes));
if (codes) {
IDirectDraw2_GetFourCCCodes(ddraw2, &numcodes, codes);
for (i = 0; i < numcodes; ++i) {
fprintf(stderr, "Code %d: 0x%x\n", i, PrintFOURCC(codes[i]));
}
SDL_free(codes);
}
} else {
fprintf(stderr, "No FOURCC codes supported\n");
}
151
152
#endif
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
/* Create the overlay structure */
overlay = (SDL_Overlay *) SDL_malloc(sizeof *overlay);
if (overlay == NULL) {
SDL_OutOfMemory();
return (NULL);
}
SDL_memset(overlay, 0, (sizeof *overlay));
/* Fill in the basic members */
overlay->format = format;
overlay->w = width;
overlay->h = height;
/* Set up the YUV surface function structure */
overlay->hwfuncs = &dx5_yuvfuncs;
/* Create the pixel data and lookup tables */
hwdata = (struct private_yuvhwdata *) SDL_malloc(sizeof *hwdata);
overlay->hwdata = hwdata;
if (hwdata == NULL) {
SDL_OutOfMemory();
SDL_FreeYUVOverlay(overlay);
return (NULL);
}
hwdata->surface = CreateYUVSurface(this, width, height, format);
if (hwdata->surface == NULL) {
SDL_FreeYUVOverlay(overlay);
return (NULL);
}
overlay->hw_overlay = 1;
/* Set up the plane pointers */
overlay->pitches = hwdata->pitches;
overlay->pixels = hwdata->planes;
switch (format) {
case SDL_YV12_OVERLAY:
case SDL_IYUV_OVERLAY:
overlay->planes = 3;
break;
default:
overlay->planes = 1;
break;
}
/* We're all done.. */
return (overlay);
199
200
}
201
202
int
DX5_LockYUVOverlay(_THIS, SDL_Overlay * overlay)
203
{
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
HRESULT result;
LPDIRECTDRAWSURFACE3 surface;
DDSURFACEDESC ddsd;
surface = overlay->hwdata->surface;
SDL_memset(&ddsd, 0, sizeof(ddsd));
ddsd.dwSize = sizeof(ddsd);
result = IDirectDrawSurface3_Lock(surface, NULL,
&ddsd, DDLOCK_NOSYSLOCK, NULL);
if (result == DDERR_SURFACELOST) {
result = IDirectDrawSurface3_Restore(surface);
result = IDirectDrawSurface3_Lock(surface, NULL, &ddsd,
(DDLOCK_NOSYSLOCK | DDLOCK_WAIT),
NULL);
}
if (result != DD_OK) {
SetDDerror("DirectDrawSurface3::Lock", result);
return (-1);
}
/* 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
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
overlay->pixels[0] = (Uint8 *) ddsd.lpSurface;
switch (overlay->format) {
case SDL_YV12_OVERLAY:
case SDL_IYUV_OVERLAY:
/* Add the two extra planes */
overlay->pitches[1] = overlay->pitches[0] / 2;
overlay->pitches[2] = overlay->pitches[0] / 2;
overlay->pixels[1] = overlay->pixels[0] +
overlay->pitches[0] * overlay->h;
overlay->pixels[2] = overlay->pixels[1] +
overlay->pitches[1] * overlay->h / 2;
break;
default:
/* Only one plane, no worries */
break;
}
return (0);
247
248
}
249
250
void
DX5_UnlockYUVOverlay(_THIS, SDL_Overlay * overlay)
251
{
252
LPDIRECTDRAWSURFACE3 surface;
253
254
255
surface = overlay->hwdata->surface;
IDirectDrawSurface3_Unlock(surface, NULL);
256
257
}
258
259
260
int
DX5_DisplayYUVOverlay(_THIS, SDL_Overlay * overlay, SDL_Rect * src,
SDL_Rect * dst)
261
{
262
263
264
265
266
267
268
269
270
271
272
273
274
HRESULT result;
LPDIRECTDRAWSURFACE3 surface;
RECT srcrect, dstrect;
surface = overlay->hwdata->surface;
srcrect.top = src->y;
srcrect.bottom = srcrect.top + src->h;
srcrect.left = src->x;
srcrect.right = srcrect.left + src->w;
dstrect.top = SDL_bounds.top + dst->y;
dstrect.left = SDL_bounds.left + dst->x;
dstrect.bottom = dstrect.top + dst->h;
dstrect.right = dstrect.left + dst->w;
275
#ifdef USE_DIRECTX_OVERLAY
276
277
278
279
280
281
282
result = IDirectDrawSurface3_UpdateOverlay(surface, &srcrect,
SDL_primary, &dstrect,
DDOVER_SHOW, NULL);
if (result != DD_OK) {
SetDDerror("DirectDrawSurface3::UpdateOverlay", result);
return (-1);
}
283
#else
284
285
286
287
288
289
290
result =
IDirectDrawSurface3_Blt(SDL_primary, &dstrect, surface, &srcrect,
DDBLT_WAIT, NULL);
if (result != DD_OK) {
SetDDerror("DirectDrawSurface3::Blt", result);
return (-1);
}
291
#endif
292
return (0);
293
294
}
295
296
void
DX5_FreeYUVOverlay(_THIS, SDL_Overlay * overlay)
297
{
298
299
300
301
302
303
304
305
306
struct private_yuvhwdata *hwdata;
hwdata = overlay->hwdata;
if (hwdata) {
if (hwdata->surface) {
IDirectDrawSurface_Release(hwdata->surface);
}
SDL_free(hwdata);
}
307
308
}
309
/* vi: set ts=4 sw=4 expandtab: */