e14743d1 |
1 | /* |
2 | SDL - Simple DirectMedia Layer |
3 | Copyright (C) 1997-2009 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 | 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 | Lesser General Public License for more details. |
14 | |
15 | You should have received a copy of the GNU Lesser General Public |
16 | License along with this library; if not, write to the Free Software |
17 | 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 | /* This is the BeOS version of SDL YUV video overlays */ |
25 | |
26 | #include "SDL_video.h" |
27 | #include "SDL_sysyuv.h" |
28 | #include "../SDL_yuvfuncs.h" |
29 | |
30 | extern "C" { |
31 | |
32 | /* The functions used to manipulate software video overlays */ |
33 | static struct private_yuvhwfuncs be_yuvfuncs = |
34 | { |
35 | BE_LockYUVOverlay, |
36 | BE_UnlockYUVOverlay, |
37 | BE_DisplayYUVOverlay, |
38 | BE_FreeYUVOverlay |
39 | }; |
40 | |
41 | BBitmap * BE_GetOverlayBitmap(BRect bounds, color_space cs) { |
42 | BBitmap *bbitmap; |
43 | bbitmap = new BBitmap(bounds,B_BITMAP_WILL_OVERLAY,cs); |
44 | if (!bbitmap || bbitmap->InitCheck() != B_OK) { |
45 | delete bbitmap; |
46 | return 0; |
47 | } |
48 | overlay_restrictions r; |
49 | bbitmap->GetOverlayRestrictions(&r); |
50 | uint32 width = bounds.IntegerWidth() + 1; |
51 | uint32 height = bounds.IntegerHeight() + 1; |
52 | uint32 width_padding = 0; |
53 | uint32 height_padding = 0; |
54 | if ((r.source.horizontal_alignment != 0) || |
55 | (r.source.vertical_alignment != 0)) { |
56 | delete bbitmap; |
57 | return 0; |
58 | } |
59 | if (r.source.width_alignment != 0) { |
60 | uint32 aligned_width = r.source.width_alignment + 1; |
61 | if (width % aligned_width > 0) { |
62 | width_padding = aligned_width - width % aligned_width; |
63 | } |
64 | } |
65 | if (r.source.height_alignment != 0) { |
66 | uint32 aligned_height = r.source.height_alignment + 1; |
67 | if (height % aligned_height > 0) { |
68 | fprintf(stderr,"GetOverlayBitmap failed height alignment\n"); |
69 | fprintf(stderr,"- height = %lu, aligned_height = %lu\n",height,aligned_height); |
70 | delete bbitmap; |
71 | return 0; |
72 | } |
73 | } |
74 | if ((r.source.min_width > width) || |
75 | (r.source.min_height > height) || |
76 | (r.source.max_width < width) || |
77 | (r.source.max_height < height)) { |
78 | fprintf(stderr,"GetOverlayBitmap failed bounds tests\n"); |
79 | delete bbitmap; |
80 | return 0; |
81 | } |
82 | if ((width_padding != 0) || (height_padding != 0)) { |
83 | delete bbitmap; |
84 | bounds.Set(bounds.left,bounds.top,bounds.right+width_padding,bounds.bottom+height_padding); |
85 | bbitmap = new BBitmap(bounds,B_BITMAP_WILL_OVERLAY,cs); |
86 | if (!bbitmap || bbitmap->InitCheck() != B_OK) { |
87 | fprintf(stderr,"GetOverlayBitmap failed late\n"); |
88 | delete bbitmap; |
89 | return 0; |
90 | } |
91 | } |
92 | return bbitmap; |
93 | } |
94 | |
95 | // See <GraphicsDefs.h> [btw: Cb=U, Cr=V] |
96 | // See also http://www.fourcc.org/indexyuv.htm |
97 | color_space convert_color_space(Uint32 format) { |
98 | switch (format) { |
99 | case SDL_YV12_OVERLAY: |
100 | return B_YUV9; |
101 | case SDL_IYUV_OVERLAY: |
102 | return B_YUV12; |
103 | case SDL_YUY2_OVERLAY: |
104 | return B_YCbCr422; |
105 | case SDL_UYVY_OVERLAY: |
106 | return B_YUV422; |
107 | case SDL_YVYU_OVERLAY: // not supported on beos? |
108 | return B_NO_COLOR_SPACE; |
109 | default: |
110 | return B_NO_COLOR_SPACE; |
111 | } |
112 | } |
113 | |
114 | // See SDL_video.h |
115 | int count_planes(Uint32 format) { |
116 | switch (format) { |
117 | case SDL_YV12_OVERLAY: |
118 | case SDL_IYUV_OVERLAY: |
119 | return 3; |
120 | case SDL_YUY2_OVERLAY: |
121 | case SDL_UYVY_OVERLAY: |
122 | case SDL_YVYU_OVERLAY: |
123 | return 1; |
124 | default: |
125 | return 0; |
126 | } |
127 | } |
128 | |
129 | SDL_Overlay *BE_CreateYUVOverlay(_THIS, int width, int height, Uint32 format, SDL_Surface *display) { |
130 | SDL_Overlay* overlay; |
131 | struct private_yuvhwdata* hwdata; |
132 | BBitmap *bbitmap; |
133 | int planes; |
134 | BRect bounds; |
135 | color_space cs; |
136 | |
137 | /* find the appropriate BeOS colorspace descriptor */ |
138 | cs = convert_color_space(format); |
139 | if (cs == B_NO_COLOR_SPACE) |
140 | { |
141 | return NULL; |
142 | } |
143 | |
144 | /* count planes */ |
145 | planes = count_planes(format); |
146 | if (planes == 0) |
147 | { |
148 | return NULL; |
149 | } |
150 | /* TODO: figure out planar modes, if anyone cares */ |
151 | if (planes == 3) |
152 | { |
153 | return NULL; |
154 | } |
155 | |
156 | /* Create the overlay structure */ |
157 | overlay = (SDL_Overlay*)SDL_calloc(1, sizeof(SDL_Overlay)); |
158 | |
159 | if (overlay == NULL) |
160 | { |
161 | SDL_OutOfMemory(); |
162 | return NULL; |
163 | } |
164 | |
165 | /* Fill in the basic members */ |
166 | overlay->format = format; |
167 | overlay->w = width; |
168 | overlay->h = height; |
169 | overlay->hwdata = NULL; |
170 | |
171 | /* Set up the YUV surface function structure */ |
172 | overlay->hwfuncs = &be_yuvfuncs; |
173 | |
174 | /* Create the pixel data and lookup tables */ |
175 | hwdata = (struct private_yuvhwdata*)SDL_calloc(1, sizeof(struct private_yuvhwdata)); |
176 | |
177 | if (hwdata == NULL) |
178 | { |
179 | SDL_OutOfMemory(); |
180 | SDL_FreeYUVOverlay(overlay); |
181 | return NULL; |
182 | } |
183 | |
184 | overlay->hwdata = hwdata; |
185 | overlay->hwdata->display = display; |
186 | overlay->hwdata->bview = NULL; |
187 | overlay->hwdata->bbitmap = NULL; |
188 | overlay->hwdata->locked = 0; |
189 | |
190 | /* Create the BBitmap framebuffer */ |
191 | bounds.top = 0; bounds.left = 0; |
192 | bounds.right = width-1; |
193 | bounds.bottom = height-1; |
194 | |
195 | BView * bview = new BView(bounds,"overlay",B_FOLLOW_NONE,B_WILL_DRAW); |
196 | if (!bview) { |
197 | SDL_OutOfMemory(); |
198 | SDL_FreeYUVOverlay(overlay); |
199 | return NULL; |
200 | } |
201 | overlay->hwdata->bview = bview; |
202 | overlay->hwdata->first_display = true; |
203 | bview->Hide(); |
204 | |
205 | bbitmap = BE_GetOverlayBitmap(bounds,cs); |
206 | if (!bbitmap) { |
207 | overlay->hwdata->bbitmap = NULL; |
208 | SDL_FreeYUVOverlay(overlay); |
209 | return NULL; |
210 | } |
211 | overlay->hwdata->bbitmap = bbitmap; |
212 | |
213 | overlay->planes = planes; |
214 | overlay->pitches = (Uint16*)SDL_calloc(overlay->planes, sizeof(Uint16)); |
215 | overlay->pixels = (Uint8**)SDL_calloc(overlay->planes, sizeof(Uint8*)); |
216 | if (!overlay->pitches || !overlay->pixels) |
217 | { |
218 | SDL_OutOfMemory(); |
219 | SDL_FreeYUVOverlay(overlay); |
220 | return(NULL); |
221 | } |
222 | |
223 | overlay->pitches[0] = bbitmap->BytesPerRow(); |
224 | overlay->pixels[0] = (Uint8 *)bbitmap->Bits(); |
225 | overlay->hw_overlay = 1; |
226 | |
227 | if (SDL_Win->LockWithTimeout(1000000) != B_OK) { |
228 | SDL_FreeYUVOverlay(overlay); |
229 | return(NULL); |
230 | } |
231 | BView * view = SDL_Win->View(); |
232 | view->AddChild(bview); |
233 | rgb_color key; |
234 | bview->SetViewOverlay(bbitmap,bounds,bview->Bounds(),&key,B_FOLLOW_ALL, |
235 | B_OVERLAY_FILTER_HORIZONTAL|B_OVERLAY_FILTER_VERTICAL); |
236 | bview->SetViewColor(key); |
237 | bview->Flush(); |
238 | SDL_Win->Unlock(); |
239 | |
240 | current_overlay=overlay; |
241 | |
242 | return overlay; |
243 | } |
244 | |
245 | int BE_LockYUVOverlay(_THIS, SDL_Overlay* overlay) |
246 | { |
247 | if (overlay == NULL) |
248 | { |
249 | return 0; |
250 | } |
251 | |
252 | overlay->hwdata->locked = 1; |
253 | return 0; |
254 | } |
255 | |
256 | void BE_UnlockYUVOverlay(_THIS, SDL_Overlay* overlay) |
257 | { |
258 | if (overlay == NULL) |
259 | { |
260 | return; |
261 | } |
262 | |
263 | overlay->hwdata->locked = 0; |
264 | } |
265 | |
266 | int BE_DisplayYUVOverlay(_THIS, SDL_Overlay* overlay, SDL_Rect* src, SDL_Rect *dst) |
267 | { |
268 | if ((overlay == NULL) || (overlay->hwdata==NULL) |
269 | || (overlay->hwdata->bview==NULL) || (SDL_Win->View() == NULL)) |
270 | { |
271 | return -1; |
272 | } |
273 | if (SDL_Win->LockWithTimeout(50000) != B_OK) { |
274 | return 0; |
275 | } |
276 | BView * bview = overlay->hwdata->bview; |
277 | if (SDL_Win->IsFullScreen()) { |
278 | int left,top; |
279 | SDL_Win->GetXYOffset(left,top); |
280 | bview->MoveTo(left+dst->x,top+dst->y); |
281 | } else { |
282 | bview->MoveTo(dst->x,dst->y); |
283 | } |
284 | bview->ResizeTo(dst->w,dst->h); |
285 | bview->Flush(); |
286 | if (overlay->hwdata->first_display) { |
287 | bview->Show(); |
288 | overlay->hwdata->first_display = false; |
289 | } |
290 | SDL_Win->Unlock(); |
291 | |
292 | return 0; |
293 | } |
294 | |
295 | void BE_FreeYUVOverlay(_THIS, SDL_Overlay *overlay) |
296 | { |
297 | if (overlay == NULL) |
298 | { |
299 | return; |
300 | } |
301 | |
302 | if (overlay->hwdata == NULL) |
303 | { |
304 | return; |
305 | } |
306 | |
307 | current_overlay=NULL; |
308 | |
309 | delete overlay->hwdata->bbitmap; |
310 | |
311 | SDL_free(overlay->hwdata); |
312 | } |
313 | |
314 | }; // extern "C" |