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1 | /* |
2 | * vivid-tpg.c - Test Pattern Generator | |
3 | * | |
4 | * Note: gen_twopix and tpg_gen_text are based on code from vivi.c. See the | |
5 | * vivi.c source for the copyright information of those functions. | |
6 | * | |
7 | * Copyright 2014 Cisco Systems, Inc. and/or its affiliates. All rights reserved. | |
8 | * | |
9 | * This program is free software; you may redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; version 2 of the License. | |
12 | * | |
13 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
14 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
15 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
16 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
17 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
18 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
19 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
20 | * SOFTWARE. | |
21 | */ | |
22 | ||
23 | #include "vivid-tpg.h" | |
24 | ||
25 | /* Must remain in sync with enum tpg_pattern */ | |
26 | const char * const tpg_pattern_strings[] = { | |
27 | "75% Colorbar", | |
28 | "100% Colorbar", | |
29 | "CSC Colorbar", | |
30 | "Horizontal 100% Colorbar", | |
31 | "100% Color Squares", | |
32 | "100% Black", | |
33 | "100% White", | |
34 | "100% Red", | |
35 | "100% Green", | |
36 | "100% Blue", | |
37 | "16x16 Checkers", | |
38 | "1x1 Checkers", | |
39 | "Alternating Hor Lines", | |
40 | "Alternating Vert Lines", | |
41 | "One Pixel Wide Cross", | |
42 | "Two Pixels Wide Cross", | |
43 | "Ten Pixels Wide Cross", | |
44 | "Gray Ramp", | |
45 | "Noise", | |
46 | NULL | |
47 | }; | |
48 | ||
49 | /* Must remain in sync with enum tpg_aspect */ | |
50 | const char * const tpg_aspect_strings[] = { | |
51 | "Source Width x Height", | |
52 | "4x3", | |
53 | "14x9", | |
54 | "16x9", | |
55 | "16x9 Anamorphic", | |
56 | NULL | |
57 | }; | |
58 | ||
59 | /* | |
60 | * Sine table: sin[0] = 127 * sin(-180 degrees) | |
61 | * sin[128] = 127 * sin(0 degrees) | |
62 | * sin[256] = 127 * sin(180 degrees) | |
63 | */ | |
64 | static const s8 sin[257] = { | |
65 | 0, -4, -7, -11, -13, -18, -20, -22, -26, -29, -33, -35, -37, -41, -43, -48, | |
66 | -50, -52, -56, -58, -62, -63, -65, -69, -71, -75, -76, -78, -82, -83, -87, -88, | |
67 | -90, -93, -94, -97, -99, -101, -103, -104, -107, -108, -110, -111, -112, -114, -115, -117, | |
68 | -118, -119, -120, -121, -122, -123, -123, -124, -125, -125, -126, -126, -127, -127, -127, -127, | |
69 | -127, -127, -127, -127, -126, -126, -125, -125, -124, -124, -123, -122, -121, -120, -119, -118, | |
70 | -117, -116, -114, -113, -111, -110, -109, -107, -105, -103, -101, -100, -97, -96, -93, -91, | |
71 | -90, -87, -85, -82, -80, -76, -75, -73, -69, -67, -63, -62, -60, -56, -54, -50, | |
72 | -48, -46, -41, -39, -35, -33, -31, -26, -24, -20, -18, -15, -11, -9, -4, -2, | |
73 | 0, 2, 4, 9, 11, 15, 18, 20, 24, 26, 31, 33, 35, 39, 41, 46, | |
74 | 48, 50, 54, 56, 60, 62, 64, 67, 69, 73, 75, 76, 80, 82, 85, 87, | |
75 | 90, 91, 93, 96, 97, 100, 101, 103, 105, 107, 109, 110, 111, 113, 114, 116, | |
76 | 117, 118, 119, 120, 121, 122, 123, 124, 124, 125, 125, 126, 126, 127, 127, 127, | |
77 | 127, 127, 127, 127, 127, 126, 126, 125, 125, 124, 123, 123, 122, 121, 120, 119, | |
78 | 118, 117, 115, 114, 112, 111, 110, 108, 107, 104, 103, 101, 99, 97, 94, 93, | |
79 | 90, 88, 87, 83, 82, 78, 76, 75, 71, 69, 65, 64, 62, 58, 56, 52, | |
80 | 50, 48, 43, 41, 37, 35, 33, 29, 26, 22, 20, 18, 13, 11, 7, 4, | |
81 | 0, | |
82 | }; | |
83 | ||
84 | #define cos(idx) sin[((idx) + 64) % sizeof(sin)] | |
85 | ||
86 | /* Global font descriptor */ | |
87 | static const u8 *font8x16; | |
88 | ||
89 | void tpg_set_font(const u8 *f) | |
90 | { | |
91 | font8x16 = f; | |
92 | } | |
93 | ||
94 | void tpg_init(struct tpg_data *tpg, unsigned w, unsigned h) | |
95 | { | |
96 | memset(tpg, 0, sizeof(*tpg)); | |
97 | tpg->scaled_width = tpg->src_width = w; | |
98 | tpg->src_height = tpg->buf_height = h; | |
99 | tpg->crop.width = tpg->compose.width = w; | |
100 | tpg->crop.height = tpg->compose.height = h; | |
101 | tpg->recalc_colors = true; | |
102 | tpg->recalc_square_border = true; | |
103 | tpg->brightness = 128; | |
104 | tpg->contrast = 128; | |
105 | tpg->saturation = 128; | |
106 | tpg->hue = 0; | |
107 | tpg->mv_hor_mode = TPG_MOVE_NONE; | |
108 | tpg->mv_vert_mode = TPG_MOVE_NONE; | |
109 | tpg->field = V4L2_FIELD_NONE; | |
110 | tpg_s_fourcc(tpg, V4L2_PIX_FMT_RGB24); | |
111 | tpg->colorspace = V4L2_COLORSPACE_SRGB; | |
112 | tpg->perc_fill = 100; | |
113 | } | |
114 | ||
115 | int tpg_alloc(struct tpg_data *tpg, unsigned max_w) | |
116 | { | |
117 | unsigned pat; | |
118 | unsigned plane; | |
119 | ||
120 | tpg->max_line_width = max_w; | |
121 | for (pat = 0; pat < TPG_MAX_PAT_LINES; pat++) { | |
122 | for (plane = 0; plane < TPG_MAX_PLANES; plane++) { | |
123 | unsigned pixelsz = plane ? 1 : 4; | |
124 | ||
125 | tpg->lines[pat][plane] = vzalloc(max_w * 2 * pixelsz); | |
126 | if (!tpg->lines[pat][plane]) | |
127 | return -ENOMEM; | |
128 | } | |
129 | } | |
130 | for (plane = 0; plane < TPG_MAX_PLANES; plane++) { | |
131 | unsigned pixelsz = plane ? 1 : 4; | |
132 | ||
133 | tpg->contrast_line[plane] = vzalloc(max_w * pixelsz); | |
134 | if (!tpg->contrast_line[plane]) | |
135 | return -ENOMEM; | |
136 | tpg->black_line[plane] = vzalloc(max_w * pixelsz); | |
137 | if (!tpg->black_line[plane]) | |
138 | return -ENOMEM; | |
139 | tpg->random_line[plane] = vzalloc(max_w * pixelsz); | |
140 | if (!tpg->random_line[plane]) | |
141 | return -ENOMEM; | |
142 | } | |
143 | return 0; | |
144 | } | |
145 | ||
146 | void tpg_free(struct tpg_data *tpg) | |
147 | { | |
148 | unsigned pat; | |
149 | unsigned plane; | |
150 | ||
151 | for (pat = 0; pat < TPG_MAX_PAT_LINES; pat++) | |
152 | for (plane = 0; plane < TPG_MAX_PLANES; plane++) { | |
153 | vfree(tpg->lines[pat][plane]); | |
154 | tpg->lines[pat][plane] = NULL; | |
155 | } | |
156 | for (plane = 0; plane < TPG_MAX_PLANES; plane++) { | |
157 | vfree(tpg->contrast_line[plane]); | |
158 | vfree(tpg->black_line[plane]); | |
159 | vfree(tpg->random_line[plane]); | |
160 | tpg->contrast_line[plane] = NULL; | |
161 | tpg->black_line[plane] = NULL; | |
162 | tpg->random_line[plane] = NULL; | |
163 | } | |
164 | } | |
165 | ||
166 | bool tpg_s_fourcc(struct tpg_data *tpg, u32 fourcc) | |
167 | { | |
168 | tpg->fourcc = fourcc; | |
169 | tpg->planes = 1; | |
170 | tpg->recalc_colors = true; | |
171 | switch (fourcc) { | |
172 | case V4L2_PIX_FMT_RGB565: | |
173 | case V4L2_PIX_FMT_RGB565X: | |
174 | case V4L2_PIX_FMT_RGB555: | |
175 | case V4L2_PIX_FMT_XRGB555: | |
176 | case V4L2_PIX_FMT_ARGB555: | |
177 | case V4L2_PIX_FMT_RGB555X: | |
178 | case V4L2_PIX_FMT_RGB24: | |
179 | case V4L2_PIX_FMT_BGR24: | |
180 | case V4L2_PIX_FMT_RGB32: | |
181 | case V4L2_PIX_FMT_BGR32: | |
182 | case V4L2_PIX_FMT_XRGB32: | |
183 | case V4L2_PIX_FMT_XBGR32: | |
184 | case V4L2_PIX_FMT_ARGB32: | |
185 | case V4L2_PIX_FMT_ABGR32: | |
186 | tpg->is_yuv = 0; | |
187 | break; | |
188 | case V4L2_PIX_FMT_NV16M: | |
189 | case V4L2_PIX_FMT_NV61M: | |
190 | tpg->planes = 2; | |
191 | /* fall-through */ | |
192 | case V4L2_PIX_FMT_YUYV: | |
193 | case V4L2_PIX_FMT_UYVY: | |
194 | case V4L2_PIX_FMT_YVYU: | |
195 | case V4L2_PIX_FMT_VYUY: | |
196 | tpg->is_yuv = 1; | |
197 | break; | |
198 | default: | |
199 | return false; | |
200 | } | |
201 | ||
202 | switch (fourcc) { | |
203 | case V4L2_PIX_FMT_RGB565: | |
204 | case V4L2_PIX_FMT_RGB565X: | |
205 | case V4L2_PIX_FMT_RGB555: | |
206 | case V4L2_PIX_FMT_XRGB555: | |
207 | case V4L2_PIX_FMT_ARGB555: | |
208 | case V4L2_PIX_FMT_RGB555X: | |
209 | case V4L2_PIX_FMT_YUYV: | |
210 | case V4L2_PIX_FMT_UYVY: | |
211 | case V4L2_PIX_FMT_YVYU: | |
212 | case V4L2_PIX_FMT_VYUY: | |
213 | tpg->twopixelsize[0] = 2 * 2; | |
214 | break; | |
215 | case V4L2_PIX_FMT_RGB24: | |
216 | case V4L2_PIX_FMT_BGR24: | |
217 | tpg->twopixelsize[0] = 2 * 3; | |
218 | break; | |
219 | case V4L2_PIX_FMT_RGB32: | |
220 | case V4L2_PIX_FMT_BGR32: | |
221 | case V4L2_PIX_FMT_XRGB32: | |
222 | case V4L2_PIX_FMT_XBGR32: | |
223 | case V4L2_PIX_FMT_ARGB32: | |
224 | case V4L2_PIX_FMT_ABGR32: | |
225 | tpg->twopixelsize[0] = 2 * 4; | |
226 | break; | |
227 | case V4L2_PIX_FMT_NV16M: | |
228 | case V4L2_PIX_FMT_NV61M: | |
229 | tpg->twopixelsize[0] = 2; | |
230 | tpg->twopixelsize[1] = 2; | |
231 | break; | |
232 | } | |
233 | return true; | |
234 | } | |
235 | ||
236 | void tpg_s_crop_compose(struct tpg_data *tpg, const struct v4l2_rect *crop, | |
237 | const struct v4l2_rect *compose) | |
238 | { | |
239 | tpg->crop = *crop; | |
240 | tpg->compose = *compose; | |
241 | tpg->scaled_width = (tpg->src_width * tpg->compose.width + | |
242 | tpg->crop.width - 1) / tpg->crop.width; | |
243 | tpg->scaled_width &= ~1; | |
244 | if (tpg->scaled_width > tpg->max_line_width) | |
245 | tpg->scaled_width = tpg->max_line_width; | |
246 | if (tpg->scaled_width < 2) | |
247 | tpg->scaled_width = 2; | |
248 | tpg->recalc_lines = true; | |
249 | } | |
250 | ||
251 | void tpg_reset_source(struct tpg_data *tpg, unsigned width, unsigned height, | |
252 | enum v4l2_field field) | |
253 | { | |
254 | unsigned p; | |
255 | ||
256 | tpg->src_width = width; | |
257 | tpg->src_height = height; | |
258 | tpg->field = field; | |
259 | tpg->buf_height = height; | |
260 | if (V4L2_FIELD_HAS_T_OR_B(field)) | |
261 | tpg->buf_height /= 2; | |
262 | tpg->scaled_width = width; | |
263 | tpg->crop.top = tpg->crop.left = 0; | |
264 | tpg->crop.width = width; | |
265 | tpg->crop.height = height; | |
266 | tpg->compose.top = tpg->compose.left = 0; | |
267 | tpg->compose.width = width; | |
268 | tpg->compose.height = tpg->buf_height; | |
269 | for (p = 0; p < tpg->planes; p++) | |
270 | tpg->bytesperline[p] = width * tpg->twopixelsize[p] / 2; | |
271 | tpg->recalc_square_border = true; | |
272 | } | |
273 | ||
274 | static enum tpg_color tpg_get_textbg_color(struct tpg_data *tpg) | |
275 | { | |
276 | switch (tpg->pattern) { | |
277 | case TPG_PAT_BLACK: | |
278 | return TPG_COLOR_100_WHITE; | |
279 | case TPG_PAT_CSC_COLORBAR: | |
280 | return TPG_COLOR_CSC_BLACK; | |
281 | default: | |
282 | return TPG_COLOR_100_BLACK; | |
283 | } | |
284 | } | |
285 | ||
286 | static enum tpg_color tpg_get_textfg_color(struct tpg_data *tpg) | |
287 | { | |
288 | switch (tpg->pattern) { | |
289 | case TPG_PAT_75_COLORBAR: | |
290 | case TPG_PAT_CSC_COLORBAR: | |
291 | return TPG_COLOR_CSC_WHITE; | |
292 | case TPG_PAT_BLACK: | |
293 | return TPG_COLOR_100_BLACK; | |
294 | default: | |
295 | return TPG_COLOR_100_WHITE; | |
296 | } | |
297 | } | |
298 | ||
299 | static u16 color_to_y(struct tpg_data *tpg, int r, int g, int b) | |
300 | { | |
301 | switch (tpg->colorspace) { | |
302 | case V4L2_COLORSPACE_SMPTE170M: | |
303 | case V4L2_COLORSPACE_470_SYSTEM_M: | |
304 | case V4L2_COLORSPACE_470_SYSTEM_BG: | |
305 | return ((16829 * r + 33039 * g + 6416 * b + 16 * 32768) >> 16) + (16 << 4); | |
306 | case V4L2_COLORSPACE_SMPTE240M: | |
307 | return ((11932 * r + 39455 * g + 4897 * b + 16 * 32768) >> 16) + (16 << 4); | |
308 | case V4L2_COLORSPACE_REC709: | |
309 | case V4L2_COLORSPACE_SRGB: | |
310 | default: | |
311 | return ((11966 * r + 40254 * g + 4064 * b + 16 * 32768) >> 16) + (16 << 4); | |
312 | } | |
313 | } | |
314 | ||
315 | static u16 color_to_cb(struct tpg_data *tpg, int r, int g, int b) | |
316 | { | |
317 | switch (tpg->colorspace) { | |
318 | case V4L2_COLORSPACE_SMPTE170M: | |
319 | case V4L2_COLORSPACE_470_SYSTEM_M: | |
320 | case V4L2_COLORSPACE_470_SYSTEM_BG: | |
321 | return ((-9714 * r - 19070 * g + 28784 * b + 16 * 32768) >> 16) + (128 << 4); | |
322 | case V4L2_COLORSPACE_SMPTE240M: | |
323 | return ((-6684 * r - 22100 * g + 28784 * b + 16 * 32768) >> 16) + (128 << 4); | |
324 | case V4L2_COLORSPACE_REC709: | |
325 | case V4L2_COLORSPACE_SRGB: | |
326 | default: | |
327 | return ((-6596 * r - 22189 * g + 28784 * b + 16 * 32768) >> 16) + (128 << 4); | |
328 | } | |
329 | } | |
330 | ||
331 | static u16 color_to_cr(struct tpg_data *tpg, int r, int g, int b) | |
332 | { | |
333 | switch (tpg->colorspace) { | |
334 | case V4L2_COLORSPACE_SMPTE170M: | |
335 | case V4L2_COLORSPACE_470_SYSTEM_M: | |
336 | case V4L2_COLORSPACE_470_SYSTEM_BG: | |
337 | return ((28784 * r - 24103 * g - 4681 * b + 16 * 32768) >> 16) + (128 << 4); | |
338 | case V4L2_COLORSPACE_SMPTE240M: | |
339 | return ((28784 * r - 25606 * g - 3178 * b + 16 * 32768) >> 16) + (128 << 4); | |
340 | case V4L2_COLORSPACE_REC709: | |
341 | case V4L2_COLORSPACE_SRGB: | |
342 | default: | |
343 | return ((28784 * r - 26145 * g - 2639 * b + 16 * 32768) >> 16) + (128 << 4); | |
344 | } | |
345 | } | |
346 | ||
347 | static u16 ycbcr_to_r(struct tpg_data *tpg, int y, int cb, int cr) | |
348 | { | |
349 | int r; | |
350 | ||
351 | y -= 16 << 4; | |
352 | cb -= 128 << 4; | |
353 | cr -= 128 << 4; | |
354 | switch (tpg->colorspace) { | |
355 | case V4L2_COLORSPACE_SMPTE170M: | |
356 | case V4L2_COLORSPACE_470_SYSTEM_M: | |
357 | case V4L2_COLORSPACE_470_SYSTEM_BG: | |
358 | r = 4769 * y + 6537 * cr; | |
359 | break; | |
360 | case V4L2_COLORSPACE_SMPTE240M: | |
361 | r = 4769 * y + 7376 * cr; | |
362 | break; | |
363 | case V4L2_COLORSPACE_REC709: | |
364 | case V4L2_COLORSPACE_SRGB: | |
365 | default: | |
366 | r = 4769 * y + 7343 * cr; | |
367 | break; | |
368 | } | |
369 | return clamp(r >> 12, 0, 0xff0); | |
370 | } | |
371 | ||
372 | static u16 ycbcr_to_g(struct tpg_data *tpg, int y, int cb, int cr) | |
373 | { | |
374 | int g; | |
375 | ||
376 | y -= 16 << 4; | |
377 | cb -= 128 << 4; | |
378 | cr -= 128 << 4; | |
379 | switch (tpg->colorspace) { | |
380 | case V4L2_COLORSPACE_SMPTE170M: | |
381 | case V4L2_COLORSPACE_470_SYSTEM_M: | |
382 | case V4L2_COLORSPACE_470_SYSTEM_BG: | |
383 | g = 4769 * y - 1605 * cb - 3330 * cr; | |
384 | break; | |
385 | case V4L2_COLORSPACE_SMPTE240M: | |
386 | g = 4769 * y - 1055 * cb - 2341 * cr; | |
387 | break; | |
388 | case V4L2_COLORSPACE_REC709: | |
389 | case V4L2_COLORSPACE_SRGB: | |
390 | default: | |
391 | g = 4769 * y - 873 * cb - 2183 * cr; | |
392 | break; | |
393 | } | |
394 | return clamp(g >> 12, 0, 0xff0); | |
395 | } | |
396 | ||
397 | static u16 ycbcr_to_b(struct tpg_data *tpg, int y, int cb, int cr) | |
398 | { | |
399 | int b; | |
400 | ||
401 | y -= 16 << 4; | |
402 | cb -= 128 << 4; | |
403 | cr -= 128 << 4; | |
404 | switch (tpg->colorspace) { | |
405 | case V4L2_COLORSPACE_SMPTE170M: | |
406 | case V4L2_COLORSPACE_470_SYSTEM_M: | |
407 | case V4L2_COLORSPACE_470_SYSTEM_BG: | |
408 | b = 4769 * y + 7343 * cb; | |
409 | break; | |
410 | case V4L2_COLORSPACE_SMPTE240M: | |
411 | b = 4769 * y + 8552 * cb; | |
412 | break; | |
413 | case V4L2_COLORSPACE_REC709: | |
414 | case V4L2_COLORSPACE_SRGB: | |
415 | default: | |
416 | b = 4769 * y + 8652 * cb; | |
417 | break; | |
418 | } | |
419 | return clamp(b >> 12, 0, 0xff0); | |
420 | } | |
421 | ||
422 | /* precalculate color bar values to speed up rendering */ | |
423 | static void precalculate_color(struct tpg_data *tpg, int k) | |
424 | { | |
425 | int col = k; | |
426 | int r = tpg_colors[col].r; | |
427 | int g = tpg_colors[col].g; | |
428 | int b = tpg_colors[col].b; | |
429 | ||
430 | if (k == TPG_COLOR_TEXTBG) { | |
431 | col = tpg_get_textbg_color(tpg); | |
432 | ||
433 | r = tpg_colors[col].r; | |
434 | g = tpg_colors[col].g; | |
435 | b = tpg_colors[col].b; | |
436 | } else if (k == TPG_COLOR_TEXTFG) { | |
437 | col = tpg_get_textfg_color(tpg); | |
438 | ||
439 | r = tpg_colors[col].r; | |
440 | g = tpg_colors[col].g; | |
441 | b = tpg_colors[col].b; | |
442 | } else if (tpg->pattern == TPG_PAT_NOISE) { | |
443 | r = g = b = prandom_u32_max(256); | |
444 | } else if (k == TPG_COLOR_RANDOM) { | |
445 | r = g = b = tpg->qual_offset + prandom_u32_max(196); | |
446 | } else if (k >= TPG_COLOR_RAMP) { | |
447 | r = g = b = k - TPG_COLOR_RAMP; | |
448 | } | |
449 | ||
450 | if (tpg->pattern == TPG_PAT_CSC_COLORBAR && col <= TPG_COLOR_CSC_BLACK) { | |
451 | r = tpg_csc_colors[tpg->colorspace][col].r; | |
452 | g = tpg_csc_colors[tpg->colorspace][col].g; | |
453 | b = tpg_csc_colors[tpg->colorspace][col].b; | |
454 | } else { | |
455 | r <<= 4; | |
456 | g <<= 4; | |
457 | b <<= 4; | |
458 | } | |
459 | if (tpg->qual == TPG_QUAL_GRAY) | |
460 | r = g = b = color_to_y(tpg, r, g, b); | |
461 | ||
462 | /* | |
463 | * The assumption is that the RGB output is always full range, | |
464 | * so only if the rgb_range overrides the 'real' rgb range do | |
465 | * we need to convert the RGB values. | |
466 | * | |
467 | * Currently there is no way of signalling to userspace if you | |
468 | * are actually giving it limited range RGB (or full range | |
469 | * YUV for that matter). | |
470 | * | |
471 | * Remember that r, g and b are still in the 0 - 0xff0 range. | |
472 | */ | |
473 | if (tpg->real_rgb_range == V4L2_DV_RGB_RANGE_LIMITED && | |
474 | tpg->rgb_range == V4L2_DV_RGB_RANGE_FULL) { | |
475 | /* | |
476 | * Convert from full range (which is what r, g and b are) | |
477 | * to limited range (which is the 'real' RGB range), which | |
478 | * is then interpreted as full range. | |
479 | */ | |
480 | r = (r * 219) / 255 + (16 << 4); | |
481 | g = (g * 219) / 255 + (16 << 4); | |
482 | b = (b * 219) / 255 + (16 << 4); | |
483 | } else if (tpg->real_rgb_range != V4L2_DV_RGB_RANGE_LIMITED && | |
484 | tpg->rgb_range == V4L2_DV_RGB_RANGE_LIMITED) { | |
485 | /* | |
486 | * Clamp r, g and b to the limited range and convert to full | |
487 | * range since that's what we deliver. | |
488 | */ | |
489 | r = clamp(r, 16 << 4, 235 << 4); | |
490 | g = clamp(g, 16 << 4, 235 << 4); | |
491 | b = clamp(b, 16 << 4, 235 << 4); | |
492 | r = (r - (16 << 4)) * 255 / 219; | |
493 | g = (g - (16 << 4)) * 255 / 219; | |
494 | b = (b - (16 << 4)) * 255 / 219; | |
495 | } | |
496 | ||
497 | if (tpg->brightness != 128 || tpg->contrast != 128 || | |
498 | tpg->saturation != 128 || tpg->hue) { | |
499 | /* Implement these operations */ | |
500 | ||
501 | /* First convert to YCbCr */ | |
502 | int y = color_to_y(tpg, r, g, b); /* Luma */ | |
503 | int cb = color_to_cb(tpg, r, g, b); /* Cb */ | |
504 | int cr = color_to_cr(tpg, r, g, b); /* Cr */ | |
505 | int tmp_cb, tmp_cr; | |
506 | ||
507 | y = (16 << 4) + ((y - (16 << 4)) * tpg->contrast) / 128; | |
508 | y += (tpg->brightness << 4) - (128 << 4); | |
509 | ||
510 | cb -= 128 << 4; | |
511 | cr -= 128 << 4; | |
512 | tmp_cb = (cb * cos(128 + tpg->hue)) / 127 + (cr * sin[128 + tpg->hue]) / 127; | |
513 | tmp_cr = (cr * cos(128 + tpg->hue)) / 127 - (cb * sin[128 + tpg->hue]) / 127; | |
514 | ||
515 | cb = (128 << 4) + (tmp_cb * tpg->contrast * tpg->saturation) / (128 * 128); | |
516 | cr = (128 << 4) + (tmp_cr * tpg->contrast * tpg->saturation) / (128 * 128); | |
517 | if (tpg->is_yuv) { | |
518 | tpg->colors[k][0] = clamp(y >> 4, 1, 254); | |
519 | tpg->colors[k][1] = clamp(cb >> 4, 1, 254); | |
520 | tpg->colors[k][2] = clamp(cr >> 4, 1, 254); | |
521 | return; | |
522 | } | |
523 | r = ycbcr_to_r(tpg, y, cb, cr); | |
524 | g = ycbcr_to_g(tpg, y, cb, cr); | |
525 | b = ycbcr_to_b(tpg, y, cb, cr); | |
526 | } | |
527 | ||
528 | if (tpg->is_yuv) { | |
529 | /* Convert to YCbCr */ | |
530 | u16 y = color_to_y(tpg, r, g, b); /* Luma */ | |
531 | u16 cb = color_to_cb(tpg, r, g, b); /* Cb */ | |
532 | u16 cr = color_to_cr(tpg, r, g, b); /* Cr */ | |
533 | ||
534 | tpg->colors[k][0] = clamp(y >> 4, 1, 254); | |
535 | tpg->colors[k][1] = clamp(cb >> 4, 1, 254); | |
536 | tpg->colors[k][2] = clamp(cr >> 4, 1, 254); | |
537 | } else { | |
538 | switch (tpg->fourcc) { | |
539 | case V4L2_PIX_FMT_RGB565: | |
540 | case V4L2_PIX_FMT_RGB565X: | |
541 | r >>= 7; | |
542 | g >>= 6; | |
543 | b >>= 7; | |
544 | break; | |
545 | case V4L2_PIX_FMT_RGB555: | |
546 | case V4L2_PIX_FMT_XRGB555: | |
547 | case V4L2_PIX_FMT_ARGB555: | |
548 | case V4L2_PIX_FMT_RGB555X: | |
549 | r >>= 7; | |
550 | g >>= 7; | |
551 | b >>= 7; | |
552 | break; | |
553 | default: | |
554 | r >>= 4; | |
555 | g >>= 4; | |
556 | b >>= 4; | |
557 | break; | |
558 | } | |
559 | ||
560 | tpg->colors[k][0] = r; | |
561 | tpg->colors[k][1] = g; | |
562 | tpg->colors[k][2] = b; | |
563 | } | |
564 | } | |
565 | ||
566 | static void tpg_precalculate_colors(struct tpg_data *tpg) | |
567 | { | |
568 | int k; | |
569 | ||
570 | for (k = 0; k < TPG_COLOR_MAX; k++) | |
571 | precalculate_color(tpg, k); | |
572 | } | |
573 | ||
574 | /* 'odd' is true for pixels 1, 3, 5, etc. and false for pixels 0, 2, 4, etc. */ | |
575 | static void gen_twopix(struct tpg_data *tpg, | |
576 | u8 buf[TPG_MAX_PLANES][8], int color, bool odd) | |
577 | { | |
578 | unsigned offset = odd * tpg->twopixelsize[0] / 2; | |
579 | u8 alpha = tpg->alpha_component; | |
580 | u8 r_y, g_u, b_v; | |
581 | ||
582 | if (tpg->alpha_red_only && color != TPG_COLOR_CSC_RED && | |
583 | color != TPG_COLOR_100_RED && | |
584 | color != TPG_COLOR_75_RED) | |
585 | alpha = 0; | |
586 | if (color == TPG_COLOR_RANDOM) | |
587 | precalculate_color(tpg, color); | |
588 | r_y = tpg->colors[color][0]; /* R or precalculated Y */ | |
589 | g_u = tpg->colors[color][1]; /* G or precalculated U */ | |
590 | b_v = tpg->colors[color][2]; /* B or precalculated V */ | |
591 | ||
592 | switch (tpg->fourcc) { | |
593 | case V4L2_PIX_FMT_NV16M: | |
594 | buf[0][offset] = r_y; | |
595 | buf[1][offset] = odd ? b_v : g_u; | |
596 | break; | |
597 | case V4L2_PIX_FMT_NV61M: | |
598 | buf[0][offset] = r_y; | |
599 | buf[1][offset] = odd ? g_u : b_v; | |
600 | break; | |
601 | ||
602 | case V4L2_PIX_FMT_YUYV: | |
603 | buf[0][offset] = r_y; | |
604 | buf[0][offset + 1] = odd ? b_v : g_u; | |
605 | break; | |
606 | case V4L2_PIX_FMT_UYVY: | |
607 | buf[0][offset] = odd ? b_v : g_u; | |
608 | buf[0][offset + 1] = r_y; | |
609 | break; | |
610 | case V4L2_PIX_FMT_YVYU: | |
611 | buf[0][offset] = r_y; | |
612 | buf[0][offset + 1] = odd ? g_u : b_v; | |
613 | break; | |
614 | case V4L2_PIX_FMT_VYUY: | |
615 | buf[0][offset] = odd ? g_u : b_v; | |
616 | buf[0][offset + 1] = r_y; | |
617 | break; | |
618 | case V4L2_PIX_FMT_RGB565: | |
619 | buf[0][offset] = (g_u << 5) | b_v; | |
620 | buf[0][offset + 1] = (r_y << 3) | (g_u >> 3); | |
621 | break; | |
622 | case V4L2_PIX_FMT_RGB565X: | |
623 | buf[0][offset] = (r_y << 3) | (g_u >> 3); | |
624 | buf[0][offset + 1] = (g_u << 5) | b_v; | |
625 | break; | |
626 | case V4L2_PIX_FMT_RGB555: | |
627 | case V4L2_PIX_FMT_XRGB555: | |
628 | alpha = 0; | |
629 | /* fall through */ | |
630 | case V4L2_PIX_FMT_ARGB555: | |
631 | buf[0][offset] = (g_u << 5) | b_v; | |
632 | buf[0][offset + 1] = (alpha & 0x80) | (r_y << 2) | (g_u >> 3); | |
633 | break; | |
634 | case V4L2_PIX_FMT_RGB555X: | |
635 | buf[0][offset] = (alpha & 0x80) | (r_y << 2) | (g_u >> 3); | |
636 | buf[0][offset + 1] = (g_u << 5) | b_v; | |
637 | break; | |
638 | case V4L2_PIX_FMT_RGB24: | |
639 | buf[0][offset] = r_y; | |
640 | buf[0][offset + 1] = g_u; | |
641 | buf[0][offset + 2] = b_v; | |
642 | break; | |
643 | case V4L2_PIX_FMT_BGR24: | |
644 | buf[0][offset] = b_v; | |
645 | buf[0][offset + 1] = g_u; | |
646 | buf[0][offset + 2] = r_y; | |
647 | break; | |
648 | case V4L2_PIX_FMT_RGB32: | |
649 | case V4L2_PIX_FMT_XRGB32: | |
650 | alpha = 0; | |
651 | /* fall through */ | |
652 | case V4L2_PIX_FMT_ARGB32: | |
653 | buf[0][offset] = alpha; | |
654 | buf[0][offset + 1] = r_y; | |
655 | buf[0][offset + 2] = g_u; | |
656 | buf[0][offset + 3] = b_v; | |
657 | break; | |
658 | case V4L2_PIX_FMT_BGR32: | |
659 | case V4L2_PIX_FMT_XBGR32: | |
660 | alpha = 0; | |
661 | /* fall through */ | |
662 | case V4L2_PIX_FMT_ABGR32: | |
663 | buf[0][offset] = b_v; | |
664 | buf[0][offset + 1] = g_u; | |
665 | buf[0][offset + 2] = r_y; | |
666 | buf[0][offset + 3] = alpha; | |
667 | break; | |
668 | } | |
669 | } | |
670 | ||
671 | /* Return how many pattern lines are used by the current pattern. */ | |
672 | static unsigned tpg_get_pat_lines(struct tpg_data *tpg) | |
673 | { | |
674 | switch (tpg->pattern) { | |
675 | case TPG_PAT_CHECKERS_16X16: | |
676 | case TPG_PAT_CHECKERS_1X1: | |
677 | case TPG_PAT_ALTERNATING_HLINES: | |
678 | case TPG_PAT_CROSS_1_PIXEL: | |
679 | case TPG_PAT_CROSS_2_PIXELS: | |
680 | case TPG_PAT_CROSS_10_PIXELS: | |
681 | return 2; | |
682 | case TPG_PAT_100_COLORSQUARES: | |
683 | case TPG_PAT_100_HCOLORBAR: | |
684 | return 8; | |
685 | default: | |
686 | return 1; | |
687 | } | |
688 | } | |
689 | ||
690 | /* Which pattern line should be used for the given frame line. */ | |
691 | static unsigned tpg_get_pat_line(struct tpg_data *tpg, unsigned line) | |
692 | { | |
693 | switch (tpg->pattern) { | |
694 | case TPG_PAT_CHECKERS_16X16: | |
695 | return (line >> 4) & 1; | |
696 | case TPG_PAT_CHECKERS_1X1: | |
697 | case TPG_PAT_ALTERNATING_HLINES: | |
698 | return line & 1; | |
699 | case TPG_PAT_100_COLORSQUARES: | |
700 | case TPG_PAT_100_HCOLORBAR: | |
701 | return (line * 8) / tpg->src_height; | |
702 | case TPG_PAT_CROSS_1_PIXEL: | |
703 | return line == tpg->src_height / 2; | |
704 | case TPG_PAT_CROSS_2_PIXELS: | |
705 | return (line + 1) / 2 == tpg->src_height / 4; | |
706 | case TPG_PAT_CROSS_10_PIXELS: | |
707 | return (line + 10) / 20 == tpg->src_height / 40; | |
708 | default: | |
709 | return 0; | |
710 | } | |
711 | } | |
712 | ||
713 | /* | |
714 | * Which color should be used for the given pattern line and X coordinate. | |
715 | * Note: x is in the range 0 to 2 * tpg->src_width. | |
716 | */ | |
717 | static enum tpg_color tpg_get_color(struct tpg_data *tpg, unsigned pat_line, unsigned x) | |
718 | { | |
719 | /* Maximum number of bars are TPG_COLOR_MAX - otherwise, the input print code | |
720 | should be modified */ | |
721 | static const enum tpg_color bars[3][8] = { | |
722 | /* Standard ITU-R 75% color bar sequence */ | |
723 | { TPG_COLOR_CSC_WHITE, TPG_COLOR_75_YELLOW, | |
724 | TPG_COLOR_75_CYAN, TPG_COLOR_75_GREEN, | |
725 | TPG_COLOR_75_MAGENTA, TPG_COLOR_75_RED, | |
726 | TPG_COLOR_75_BLUE, TPG_COLOR_100_BLACK, }, | |
727 | /* Standard ITU-R 100% color bar sequence */ | |
728 | { TPG_COLOR_100_WHITE, TPG_COLOR_100_YELLOW, | |
729 | TPG_COLOR_100_CYAN, TPG_COLOR_100_GREEN, | |
730 | TPG_COLOR_100_MAGENTA, TPG_COLOR_100_RED, | |
731 | TPG_COLOR_100_BLUE, TPG_COLOR_100_BLACK, }, | |
732 | /* Color bar sequence suitable to test CSC */ | |
733 | { TPG_COLOR_CSC_WHITE, TPG_COLOR_CSC_YELLOW, | |
734 | TPG_COLOR_CSC_CYAN, TPG_COLOR_CSC_GREEN, | |
735 | TPG_COLOR_CSC_MAGENTA, TPG_COLOR_CSC_RED, | |
736 | TPG_COLOR_CSC_BLUE, TPG_COLOR_CSC_BLACK, }, | |
737 | }; | |
738 | ||
739 | switch (tpg->pattern) { | |
740 | case TPG_PAT_75_COLORBAR: | |
741 | case TPG_PAT_100_COLORBAR: | |
742 | case TPG_PAT_CSC_COLORBAR: | |
743 | return bars[tpg->pattern][((x * 8) / tpg->src_width) % 8]; | |
744 | case TPG_PAT_100_COLORSQUARES: | |
745 | return bars[1][(pat_line + (x * 8) / tpg->src_width) % 8]; | |
746 | case TPG_PAT_100_HCOLORBAR: | |
747 | return bars[1][pat_line]; | |
748 | case TPG_PAT_BLACK: | |
749 | return TPG_COLOR_100_BLACK; | |
750 | case TPG_PAT_WHITE: | |
751 | return TPG_COLOR_100_WHITE; | |
752 | case TPG_PAT_RED: | |
753 | return TPG_COLOR_100_RED; | |
754 | case TPG_PAT_GREEN: | |
755 | return TPG_COLOR_100_GREEN; | |
756 | case TPG_PAT_BLUE: | |
757 | return TPG_COLOR_100_BLUE; | |
758 | case TPG_PAT_CHECKERS_16X16: | |
759 | return (((x >> 4) & 1) ^ (pat_line & 1)) ? | |
760 | TPG_COLOR_100_BLACK : TPG_COLOR_100_WHITE; | |
761 | case TPG_PAT_CHECKERS_1X1: | |
762 | return ((x & 1) ^ (pat_line & 1)) ? | |
763 | TPG_COLOR_100_WHITE : TPG_COLOR_100_BLACK; | |
764 | case TPG_PAT_ALTERNATING_HLINES: | |
765 | return pat_line ? TPG_COLOR_100_WHITE : TPG_COLOR_100_BLACK; | |
766 | case TPG_PAT_ALTERNATING_VLINES: | |
767 | return (x & 1) ? TPG_COLOR_100_WHITE : TPG_COLOR_100_BLACK; | |
768 | case TPG_PAT_CROSS_1_PIXEL: | |
769 | if (pat_line || (x % tpg->src_width) == tpg->src_width / 2) | |
770 | return TPG_COLOR_100_BLACK; | |
771 | return TPG_COLOR_100_WHITE; | |
772 | case TPG_PAT_CROSS_2_PIXELS: | |
773 | if (pat_line || ((x % tpg->src_width) + 1) / 2 == tpg->src_width / 4) | |
774 | return TPG_COLOR_100_BLACK; | |
775 | return TPG_COLOR_100_WHITE; | |
776 | case TPG_PAT_CROSS_10_PIXELS: | |
777 | if (pat_line || ((x % tpg->src_width) + 10) / 20 == tpg->src_width / 40) | |
778 | return TPG_COLOR_100_BLACK; | |
779 | return TPG_COLOR_100_WHITE; | |
780 | case TPG_PAT_GRAY_RAMP: | |
781 | return TPG_COLOR_RAMP + ((x % tpg->src_width) * 256) / tpg->src_width; | |
782 | default: | |
783 | return TPG_COLOR_100_RED; | |
784 | } | |
785 | } | |
786 | ||
787 | /* | |
788 | * Given the pixel aspect ratio and video aspect ratio calculate the | |
789 | * coordinates of a centered square and the coordinates of the border of | |
790 | * the active video area. The coordinates are relative to the source | |
791 | * frame rectangle. | |
792 | */ | |
793 | static void tpg_calculate_square_border(struct tpg_data *tpg) | |
794 | { | |
795 | unsigned w = tpg->src_width; | |
796 | unsigned h = tpg->src_height; | |
797 | unsigned sq_w, sq_h; | |
798 | ||
799 | sq_w = (w * 2 / 5) & ~1; | |
800 | if (((w - sq_w) / 2) & 1) | |
801 | sq_w += 2; | |
802 | sq_h = sq_w; | |
803 | tpg->square.width = sq_w; | |
804 | if (tpg->vid_aspect == TPG_VIDEO_ASPECT_16X9_ANAMORPHIC) { | |
805 | unsigned ana_sq_w = (sq_w / 4) * 3; | |
806 | ||
807 | if (((w - ana_sq_w) / 2) & 1) | |
808 | ana_sq_w += 2; | |
809 | tpg->square.width = ana_sq_w; | |
810 | } | |
811 | tpg->square.left = (w - tpg->square.width) / 2; | |
812 | if (tpg->pix_aspect == TPG_PIXEL_ASPECT_NTSC) | |
813 | sq_h = sq_w * 10 / 11; | |
814 | else if (tpg->pix_aspect == TPG_PIXEL_ASPECT_PAL) | |
815 | sq_h = sq_w * 59 / 54; | |
816 | tpg->square.height = sq_h; | |
817 | tpg->square.top = (h - sq_h) / 2; | |
818 | tpg->border.left = 0; | |
819 | tpg->border.width = w; | |
820 | tpg->border.top = 0; | |
821 | tpg->border.height = h; | |
822 | switch (tpg->vid_aspect) { | |
823 | case TPG_VIDEO_ASPECT_4X3: | |
824 | if (tpg->pix_aspect) | |
825 | return; | |
826 | if (3 * w >= 4 * h) { | |
827 | tpg->border.width = ((4 * h) / 3) & ~1; | |
828 | if (((w - tpg->border.width) / 2) & ~1) | |
829 | tpg->border.width -= 2; | |
830 | tpg->border.left = (w - tpg->border.width) / 2; | |
831 | break; | |
832 | } | |
833 | tpg->border.height = ((3 * w) / 4) & ~1; | |
834 | tpg->border.top = (h - tpg->border.height) / 2; | |
835 | break; | |
836 | case TPG_VIDEO_ASPECT_14X9_CENTRE: | |
837 | if (tpg->pix_aspect) { | |
838 | tpg->border.height = tpg->pix_aspect == TPG_PIXEL_ASPECT_NTSC ? 420 : 506; | |
839 | tpg->border.top = (h - tpg->border.height) / 2; | |
840 | break; | |
841 | } | |
842 | if (9 * w >= 14 * h) { | |
843 | tpg->border.width = ((14 * h) / 9) & ~1; | |
844 | if (((w - tpg->border.width) / 2) & ~1) | |
845 | tpg->border.width -= 2; | |
846 | tpg->border.left = (w - tpg->border.width) / 2; | |
847 | break; | |
848 | } | |
849 | tpg->border.height = ((9 * w) / 14) & ~1; | |
850 | tpg->border.top = (h - tpg->border.height) / 2; | |
851 | break; | |
852 | case TPG_VIDEO_ASPECT_16X9_CENTRE: | |
853 | if (tpg->pix_aspect) { | |
854 | tpg->border.height = tpg->pix_aspect == TPG_PIXEL_ASPECT_NTSC ? 368 : 442; | |
855 | tpg->border.top = (h - tpg->border.height) / 2; | |
856 | break; | |
857 | } | |
858 | if (9 * w >= 16 * h) { | |
859 | tpg->border.width = ((16 * h) / 9) & ~1; | |
860 | if (((w - tpg->border.width) / 2) & ~1) | |
861 | tpg->border.width -= 2; | |
862 | tpg->border.left = (w - tpg->border.width) / 2; | |
863 | break; | |
864 | } | |
865 | tpg->border.height = ((9 * w) / 16) & ~1; | |
866 | tpg->border.top = (h - tpg->border.height) / 2; | |
867 | break; | |
868 | default: | |
869 | break; | |
870 | } | |
871 | } | |
872 | ||
873 | static void tpg_precalculate_line(struct tpg_data *tpg) | |
874 | { | |
875 | enum tpg_color contrast; | |
876 | unsigned pat; | |
877 | unsigned p; | |
878 | unsigned x; | |
879 | ||
880 | switch (tpg->pattern) { | |
881 | case TPG_PAT_GREEN: | |
882 | contrast = TPG_COLOR_100_RED; | |
883 | break; | |
884 | case TPG_PAT_CSC_COLORBAR: | |
885 | contrast = TPG_COLOR_CSC_GREEN; | |
886 | break; | |
887 | default: | |
888 | contrast = TPG_COLOR_100_GREEN; | |
889 | break; | |
890 | } | |
891 | ||
892 | for (pat = 0; pat < tpg_get_pat_lines(tpg); pat++) { | |
893 | /* Coarse scaling with Bresenham */ | |
894 | unsigned int_part = tpg->src_width / tpg->scaled_width; | |
895 | unsigned fract_part = tpg->src_width % tpg->scaled_width; | |
896 | unsigned src_x = 0; | |
897 | unsigned error = 0; | |
898 | ||
899 | for (x = 0; x < tpg->scaled_width * 2; x += 2) { | |
900 | unsigned real_x = src_x; | |
901 | enum tpg_color color1, color2; | |
902 | u8 pix[TPG_MAX_PLANES][8]; | |
903 | ||
904 | real_x = tpg->hflip ? tpg->src_width * 2 - real_x - 2 : real_x; | |
905 | color1 = tpg_get_color(tpg, pat, real_x); | |
906 | ||
907 | src_x += int_part; | |
908 | error += fract_part; | |
909 | if (error >= tpg->scaled_width) { | |
910 | error -= tpg->scaled_width; | |
911 | src_x++; | |
912 | } | |
913 | ||
914 | real_x = src_x; | |
915 | real_x = tpg->hflip ? tpg->src_width * 2 - real_x - 2 : real_x; | |
916 | color2 = tpg_get_color(tpg, pat, real_x); | |
917 | ||
918 | src_x += int_part; | |
919 | error += fract_part; | |
920 | if (error >= tpg->scaled_width) { | |
921 | error -= tpg->scaled_width; | |
922 | src_x++; | |
923 | } | |
924 | ||
925 | gen_twopix(tpg, pix, tpg->hflip ? color2 : color1, 0); | |
926 | gen_twopix(tpg, pix, tpg->hflip ? color1 : color2, 1); | |
927 | for (p = 0; p < tpg->planes; p++) { | |
928 | unsigned twopixsize = tpg->twopixelsize[p]; | |
929 | u8 *pos = tpg->lines[pat][p] + x * twopixsize / 2; | |
930 | ||
931 | memcpy(pos, pix[p], twopixsize); | |
932 | } | |
933 | } | |
934 | } | |
935 | for (x = 0; x < tpg->scaled_width; x += 2) { | |
936 | u8 pix[TPG_MAX_PLANES][8]; | |
937 | ||
938 | gen_twopix(tpg, pix, contrast, 0); | |
939 | gen_twopix(tpg, pix, contrast, 1); | |
940 | for (p = 0; p < tpg->planes; p++) { | |
941 | unsigned twopixsize = tpg->twopixelsize[p]; | |
942 | u8 *pos = tpg->contrast_line[p] + x * twopixsize / 2; | |
943 | ||
944 | memcpy(pos, pix[p], twopixsize); | |
945 | } | |
946 | } | |
947 | for (x = 0; x < tpg->scaled_width; x += 2) { | |
948 | u8 pix[TPG_MAX_PLANES][8]; | |
949 | ||
950 | gen_twopix(tpg, pix, TPG_COLOR_100_BLACK, 0); | |
951 | gen_twopix(tpg, pix, TPG_COLOR_100_BLACK, 1); | |
952 | for (p = 0; p < tpg->planes; p++) { | |
953 | unsigned twopixsize = tpg->twopixelsize[p]; | |
954 | u8 *pos = tpg->black_line[p] + x * twopixsize / 2; | |
955 | ||
956 | memcpy(pos, pix[p], twopixsize); | |
957 | } | |
958 | } | |
959 | for (x = 0; x < tpg->scaled_width * 2; x += 2) { | |
960 | u8 pix[TPG_MAX_PLANES][8]; | |
961 | ||
962 | gen_twopix(tpg, pix, TPG_COLOR_RANDOM, 0); | |
963 | gen_twopix(tpg, pix, TPG_COLOR_RANDOM, 1); | |
964 | for (p = 0; p < tpg->planes; p++) { | |
965 | unsigned twopixsize = tpg->twopixelsize[p]; | |
966 | u8 *pos = tpg->random_line[p] + x * twopixsize / 2; | |
967 | ||
968 | memcpy(pos, pix[p], twopixsize); | |
969 | } | |
970 | } | |
971 | gen_twopix(tpg, tpg->textbg, TPG_COLOR_TEXTBG, 0); | |
972 | gen_twopix(tpg, tpg->textbg, TPG_COLOR_TEXTBG, 1); | |
973 | gen_twopix(tpg, tpg->textfg, TPG_COLOR_TEXTFG, 0); | |
974 | gen_twopix(tpg, tpg->textfg, TPG_COLOR_TEXTFG, 1); | |
975 | } | |
976 | ||
977 | /* need this to do rgb24 rendering */ | |
978 | typedef struct { u16 __; u8 _; } __packed x24; | |
979 | ||
980 | void tpg_gen_text(struct tpg_data *tpg, u8 *basep[TPG_MAX_PLANES][2], | |
981 | int y, int x, char *text) | |
982 | { | |
983 | int line; | |
984 | unsigned step = V4L2_FIELD_HAS_T_OR_B(tpg->field) ? 2 : 1; | |
985 | unsigned div = step; | |
986 | unsigned first = 0; | |
987 | unsigned len = strlen(text); | |
988 | unsigned p; | |
989 | ||
990 | if (font8x16 == NULL || basep == NULL) | |
991 | return; | |
992 | ||
993 | /* Checks if it is possible to show string */ | |
994 | if (y + 16 >= tpg->compose.height || x + 8 >= tpg->compose.width) | |
995 | return; | |
996 | ||
997 | if (len > (tpg->compose.width - x) / 8) | |
998 | len = (tpg->compose.width - x) / 8; | |
999 | if (tpg->vflip) | |
1000 | y = tpg->compose.height - y - 16; | |
1001 | if (tpg->hflip) | |
1002 | x = tpg->compose.width - x - 8; | |
1003 | y += tpg->compose.top; | |
1004 | x += tpg->compose.left; | |
1005 | if (tpg->field == V4L2_FIELD_BOTTOM) | |
1006 | first = 1; | |
1007 | else if (tpg->field == V4L2_FIELD_SEQ_TB || tpg->field == V4L2_FIELD_SEQ_BT) | |
1008 | div = 2; | |
1009 | ||
1010 | for (p = 0; p < tpg->planes; p++) { | |
1011 | /* Print stream time */ | |
1012 | #define PRINTSTR(PIXTYPE) do { \ | |
1013 | PIXTYPE fg; \ | |
1014 | PIXTYPE bg; \ | |
1015 | memcpy(&fg, tpg->textfg[p], sizeof(PIXTYPE)); \ | |
1016 | memcpy(&bg, tpg->textbg[p], sizeof(PIXTYPE)); \ | |
1017 | \ | |
1018 | for (line = first; line < 16; line += step) { \ | |
1019 | int l = tpg->vflip ? 15 - line : line; \ | |
1020 | PIXTYPE *pos = (PIXTYPE *)(basep[p][line & 1] + \ | |
1021 | ((y * step + l) / div) * tpg->bytesperline[p] + \ | |
1022 | x * sizeof(PIXTYPE)); \ | |
1023 | unsigned s; \ | |
1024 | \ | |
1025 | for (s = 0; s < len; s++) { \ | |
1026 | u8 chr = font8x16[text[s] * 16 + line]; \ | |
1027 | \ | |
1028 | if (tpg->hflip) { \ | |
1029 | pos[7] = (chr & (0x01 << 7) ? fg : bg); \ | |
1030 | pos[6] = (chr & (0x01 << 6) ? fg : bg); \ | |
1031 | pos[5] = (chr & (0x01 << 5) ? fg : bg); \ | |
1032 | pos[4] = (chr & (0x01 << 4) ? fg : bg); \ | |
1033 | pos[3] = (chr & (0x01 << 3) ? fg : bg); \ | |
1034 | pos[2] = (chr & (0x01 << 2) ? fg : bg); \ | |
1035 | pos[1] = (chr & (0x01 << 1) ? fg : bg); \ | |
1036 | pos[0] = (chr & (0x01 << 0) ? fg : bg); \ | |
1037 | } else { \ | |
1038 | pos[0] = (chr & (0x01 << 7) ? fg : bg); \ | |
1039 | pos[1] = (chr & (0x01 << 6) ? fg : bg); \ | |
1040 | pos[2] = (chr & (0x01 << 5) ? fg : bg); \ | |
1041 | pos[3] = (chr & (0x01 << 4) ? fg : bg); \ | |
1042 | pos[4] = (chr & (0x01 << 3) ? fg : bg); \ | |
1043 | pos[5] = (chr & (0x01 << 2) ? fg : bg); \ | |
1044 | pos[6] = (chr & (0x01 << 1) ? fg : bg); \ | |
1045 | pos[7] = (chr & (0x01 << 0) ? fg : bg); \ | |
1046 | } \ | |
1047 | \ | |
1048 | pos += tpg->hflip ? -8 : 8; \ | |
1049 | } \ | |
1050 | } \ | |
1051 | } while (0) | |
1052 | ||
1053 | switch (tpg->twopixelsize[p]) { | |
1054 | case 2: | |
1055 | PRINTSTR(u8); break; | |
1056 | case 4: | |
1057 | PRINTSTR(u16); break; | |
1058 | case 6: | |
1059 | PRINTSTR(x24); break; | |
1060 | case 8: | |
1061 | PRINTSTR(u32); break; | |
1062 | } | |
1063 | } | |
1064 | } | |
1065 | ||
1066 | void tpg_update_mv_step(struct tpg_data *tpg) | |
1067 | { | |
1068 | int factor = tpg->mv_hor_mode > TPG_MOVE_NONE ? -1 : 1; | |
1069 | ||
1070 | if (tpg->hflip) | |
1071 | factor = -factor; | |
1072 | switch (tpg->mv_hor_mode) { | |
1073 | case TPG_MOVE_NEG_FAST: | |
1074 | case TPG_MOVE_POS_FAST: | |
1075 | tpg->mv_hor_step = ((tpg->src_width + 319) / 320) * 4; | |
1076 | break; | |
1077 | case TPG_MOVE_NEG: | |
1078 | case TPG_MOVE_POS: | |
1079 | tpg->mv_hor_step = ((tpg->src_width + 639) / 640) * 4; | |
1080 | break; | |
1081 | case TPG_MOVE_NEG_SLOW: | |
1082 | case TPG_MOVE_POS_SLOW: | |
1083 | tpg->mv_hor_step = 2; | |
1084 | break; | |
1085 | case TPG_MOVE_NONE: | |
1086 | tpg->mv_hor_step = 0; | |
1087 | break; | |
1088 | } | |
1089 | if (factor < 0) | |
1090 | tpg->mv_hor_step = tpg->src_width - tpg->mv_hor_step; | |
1091 | ||
1092 | factor = tpg->mv_vert_mode > TPG_MOVE_NONE ? -1 : 1; | |
1093 | switch (tpg->mv_vert_mode) { | |
1094 | case TPG_MOVE_NEG_FAST: | |
1095 | case TPG_MOVE_POS_FAST: | |
1096 | tpg->mv_vert_step = ((tpg->src_width + 319) / 320) * 4; | |
1097 | break; | |
1098 | case TPG_MOVE_NEG: | |
1099 | case TPG_MOVE_POS: | |
1100 | tpg->mv_vert_step = ((tpg->src_width + 639) / 640) * 4; | |
1101 | break; | |
1102 | case TPG_MOVE_NEG_SLOW: | |
1103 | case TPG_MOVE_POS_SLOW: | |
1104 | tpg->mv_vert_step = 1; | |
1105 | break; | |
1106 | case TPG_MOVE_NONE: | |
1107 | tpg->mv_vert_step = 0; | |
1108 | break; | |
1109 | } | |
1110 | if (factor < 0) | |
1111 | tpg->mv_vert_step = tpg->src_height - tpg->mv_vert_step; | |
1112 | } | |
1113 | ||
1114 | /* Map the line number relative to the crop rectangle to a frame line number */ | |
1115 | static unsigned tpg_calc_frameline(struct tpg_data *tpg, unsigned src_y, | |
1116 | unsigned field) | |
1117 | { | |
1118 | switch (field) { | |
1119 | case V4L2_FIELD_TOP: | |
1120 | return tpg->crop.top + src_y * 2; | |
1121 | case V4L2_FIELD_BOTTOM: | |
1122 | return tpg->crop.top + src_y * 2 + 1; | |
1123 | default: | |
1124 | return src_y + tpg->crop.top; | |
1125 | } | |
1126 | } | |
1127 | ||
1128 | /* | |
1129 | * Map the line number relative to the compose rectangle to a destination | |
1130 | * buffer line number. | |
1131 | */ | |
1132 | static unsigned tpg_calc_buffer_line(struct tpg_data *tpg, unsigned y, | |
1133 | unsigned field) | |
1134 | { | |
1135 | y += tpg->compose.top; | |
1136 | switch (field) { | |
1137 | case V4L2_FIELD_SEQ_TB: | |
1138 | if (y & 1) | |
1139 | return tpg->buf_height / 2 + y / 2; | |
1140 | return y / 2; | |
1141 | case V4L2_FIELD_SEQ_BT: | |
1142 | if (y & 1) | |
1143 | return y / 2; | |
1144 | return tpg->buf_height / 2 + y / 2; | |
1145 | default: | |
1146 | return y; | |
1147 | } | |
1148 | } | |
1149 | ||
1150 | static void tpg_recalc(struct tpg_data *tpg) | |
1151 | { | |
1152 | if (tpg->recalc_colors) { | |
1153 | tpg->recalc_colors = false; | |
1154 | tpg->recalc_lines = true; | |
1155 | tpg_precalculate_colors(tpg); | |
1156 | } | |
1157 | if (tpg->recalc_square_border) { | |
1158 | tpg->recalc_square_border = false; | |
1159 | tpg_calculate_square_border(tpg); | |
1160 | } | |
1161 | if (tpg->recalc_lines) { | |
1162 | tpg->recalc_lines = false; | |
1163 | tpg_precalculate_line(tpg); | |
1164 | } | |
1165 | } | |
1166 | ||
1167 | void tpg_calc_text_basep(struct tpg_data *tpg, | |
1168 | u8 *basep[TPG_MAX_PLANES][2], unsigned p, u8 *vbuf) | |
1169 | { | |
1170 | unsigned stride = tpg->bytesperline[p]; | |
1171 | ||
1172 | tpg_recalc(tpg); | |
1173 | ||
1174 | basep[p][0] = vbuf; | |
1175 | basep[p][1] = vbuf; | |
1176 | if (tpg->field == V4L2_FIELD_SEQ_TB) | |
1177 | basep[p][1] += tpg->buf_height * stride / 2; | |
1178 | else if (tpg->field == V4L2_FIELD_SEQ_BT) | |
1179 | basep[p][0] += tpg->buf_height * stride / 2; | |
1180 | } | |
1181 | ||
1182 | void tpg_fillbuffer(struct tpg_data *tpg, v4l2_std_id std, unsigned p, u8 *vbuf) | |
1183 | { | |
1184 | bool is_tv = std; | |
1185 | bool is_60hz = is_tv && (std & V4L2_STD_525_60); | |
1186 | unsigned mv_hor_old = tpg->mv_hor_count % tpg->src_width; | |
1187 | unsigned mv_hor_new = (tpg->mv_hor_count + tpg->mv_hor_step) % tpg->src_width; | |
1188 | unsigned mv_vert_old = tpg->mv_vert_count % tpg->src_height; | |
1189 | unsigned mv_vert_new = (tpg->mv_vert_count + tpg->mv_vert_step) % tpg->src_height; | |
1190 | unsigned wss_width; | |
1191 | unsigned f; | |
1192 | int hmax = (tpg->compose.height * tpg->perc_fill) / 100; | |
1193 | int h; | |
1194 | unsigned twopixsize = tpg->twopixelsize[p]; | |
1195 | unsigned img_width = tpg->compose.width * twopixsize / 2; | |
1196 | unsigned line_offset; | |
1197 | unsigned left_pillar_width = 0; | |
1198 | unsigned right_pillar_start = img_width; | |
1199 | unsigned stride = tpg->bytesperline[p]; | |
1200 | unsigned factor = V4L2_FIELD_HAS_T_OR_B(tpg->field) ? 2 : 1; | |
1201 | u8 *orig_vbuf = vbuf; | |
1202 | ||
1203 | /* Coarse scaling with Bresenham */ | |
1204 | unsigned int_part = (tpg->crop.height / factor) / tpg->compose.height; | |
1205 | unsigned fract_part = (tpg->crop.height / factor) % tpg->compose.height; | |
1206 | unsigned src_y = 0; | |
1207 | unsigned error = 0; | |
1208 | ||
1209 | tpg_recalc(tpg); | |
1210 | ||
1211 | mv_hor_old = (mv_hor_old * tpg->scaled_width / tpg->src_width) & ~1; | |
1212 | mv_hor_new = (mv_hor_new * tpg->scaled_width / tpg->src_width) & ~1; | |
1213 | wss_width = tpg->crop.left < tpg->src_width / 2 ? | |
1214 | tpg->src_width / 2 - tpg->crop.left : 0; | |
1215 | if (wss_width > tpg->crop.width) | |
1216 | wss_width = tpg->crop.width; | |
1217 | wss_width = wss_width * tpg->scaled_width / tpg->src_width; | |
1218 | ||
1219 | vbuf += tpg->compose.left * twopixsize / 2; | |
1220 | line_offset = tpg->crop.left * tpg->scaled_width / tpg->src_width; | |
1221 | line_offset = (line_offset & ~1) * twopixsize / 2; | |
1222 | if (tpg->crop.left < tpg->border.left) { | |
1223 | left_pillar_width = tpg->border.left - tpg->crop.left; | |
1224 | if (left_pillar_width > tpg->crop.width) | |
1225 | left_pillar_width = tpg->crop.width; | |
1226 | left_pillar_width = (left_pillar_width * tpg->scaled_width) / tpg->src_width; | |
1227 | left_pillar_width = (left_pillar_width & ~1) * twopixsize / 2; | |
1228 | } | |
1229 | if (tpg->crop.left + tpg->crop.width > tpg->border.left + tpg->border.width) { | |
1230 | right_pillar_start = tpg->border.left + tpg->border.width - tpg->crop.left; | |
1231 | right_pillar_start = (right_pillar_start * tpg->scaled_width) / tpg->src_width; | |
1232 | right_pillar_start = (right_pillar_start & ~1) * twopixsize / 2; | |
1233 | if (right_pillar_start > img_width) | |
1234 | right_pillar_start = img_width; | |
1235 | } | |
1236 | ||
1237 | f = tpg->field == (is_60hz ? V4L2_FIELD_TOP : V4L2_FIELD_BOTTOM); | |
1238 | ||
1239 | for (h = 0; h < tpg->compose.height; h++) { | |
1240 | bool even; | |
1241 | bool fill_blank = false; | |
1242 | unsigned frame_line; | |
1243 | unsigned buf_line; | |
1244 | unsigned pat_line_old; | |
1245 | unsigned pat_line_new; | |
1246 | u8 *linestart_older; | |
1247 | u8 *linestart_newer; | |
1248 | u8 *linestart_top; | |
1249 | u8 *linestart_bottom; | |
1250 | ||
1251 | frame_line = tpg_calc_frameline(tpg, src_y, tpg->field); | |
1252 | even = !(frame_line & 1); | |
1253 | buf_line = tpg_calc_buffer_line(tpg, h, tpg->field); | |
1254 | src_y += int_part; | |
1255 | error += fract_part; | |
1256 | if (error >= tpg->compose.height) { | |
1257 | error -= tpg->compose.height; | |
1258 | src_y++; | |
1259 | } | |
1260 | ||
1261 | if (h >= hmax) { | |
1262 | if (hmax == tpg->compose.height) | |
1263 | continue; | |
1264 | if (!tpg->perc_fill_blank) | |
1265 | continue; | |
1266 | fill_blank = true; | |
1267 | } | |
1268 | ||
1269 | if (tpg->vflip) | |
1270 | frame_line = tpg->src_height - frame_line - 1; | |
1271 | ||
1272 | if (fill_blank) { | |
1273 | linestart_older = tpg->contrast_line[p]; | |
1274 | linestart_newer = tpg->contrast_line[p]; | |
1275 | } else if (tpg->qual != TPG_QUAL_NOISE && | |
1276 | (frame_line < tpg->border.top || | |
1277 | frame_line >= tpg->border.top + tpg->border.height)) { | |
1278 | linestart_older = tpg->black_line[p]; | |
1279 | linestart_newer = tpg->black_line[p]; | |
1280 | } else if (tpg->pattern == TPG_PAT_NOISE || tpg->qual == TPG_QUAL_NOISE) { | |
1281 | linestart_older = tpg->random_line[p] + | |
1282 | twopixsize * prandom_u32_max(tpg->src_width / 2); | |
1283 | linestart_newer = tpg->random_line[p] + | |
1284 | twopixsize * prandom_u32_max(tpg->src_width / 2); | |
1285 | } else { | |
1286 | pat_line_old = tpg_get_pat_line(tpg, | |
1287 | (frame_line + mv_vert_old) % tpg->src_height); | |
1288 | pat_line_new = tpg_get_pat_line(tpg, | |
1289 | (frame_line + mv_vert_new) % tpg->src_height); | |
1290 | linestart_older = tpg->lines[pat_line_old][p] + | |
1291 | mv_hor_old * twopixsize / 2; | |
1292 | linestart_newer = tpg->lines[pat_line_new][p] + | |
1293 | mv_hor_new * twopixsize / 2; | |
1294 | linestart_older += line_offset; | |
1295 | linestart_newer += line_offset; | |
1296 | } | |
1297 | if (is_60hz) { | |
1298 | linestart_top = linestart_newer; | |
1299 | linestart_bottom = linestart_older; | |
1300 | } else { | |
1301 | linestart_top = linestart_older; | |
1302 | linestart_bottom = linestart_newer; | |
1303 | } | |
1304 | ||
1305 | switch (tpg->field) { | |
1306 | case V4L2_FIELD_INTERLACED: | |
1307 | case V4L2_FIELD_INTERLACED_TB: | |
1308 | case V4L2_FIELD_SEQ_TB: | |
1309 | case V4L2_FIELD_SEQ_BT: | |
1310 | if (even) | |
1311 | memcpy(vbuf + buf_line * stride, linestart_top, img_width); | |
1312 | else | |
1313 | memcpy(vbuf + buf_line * stride, linestart_bottom, img_width); | |
1314 | break; | |
1315 | case V4L2_FIELD_INTERLACED_BT: | |
1316 | if (even) | |
1317 | memcpy(vbuf + buf_line * stride, linestart_bottom, img_width); | |
1318 | else | |
1319 | memcpy(vbuf + buf_line * stride, linestart_top, img_width); | |
1320 | break; | |
1321 | case V4L2_FIELD_TOP: | |
1322 | memcpy(vbuf + buf_line * stride, linestart_top, img_width); | |
1323 | break; | |
1324 | case V4L2_FIELD_BOTTOM: | |
1325 | memcpy(vbuf + buf_line * stride, linestart_bottom, img_width); | |
1326 | break; | |
1327 | case V4L2_FIELD_NONE: | |
1328 | default: | |
1329 | memcpy(vbuf + buf_line * stride, linestart_older, img_width); | |
1330 | break; | |
1331 | } | |
1332 | ||
1333 | if (is_tv && !is_60hz && frame_line == 0 && wss_width) { | |
1334 | /* | |
1335 | * Replace the first half of the top line of a 50 Hz frame | |
1336 | * with random data to simulate a WSS signal. | |
1337 | */ | |
1338 | u8 *wss = tpg->random_line[p] + | |
1339 | twopixsize * prandom_u32_max(tpg->src_width / 2); | |
1340 | ||
1341 | memcpy(vbuf + buf_line * stride, wss, wss_width * twopixsize / 2); | |
1342 | } | |
1343 | } | |
1344 | ||
1345 | vbuf = orig_vbuf; | |
1346 | vbuf += tpg->compose.left * twopixsize / 2; | |
1347 | src_y = 0; | |
1348 | error = 0; | |
1349 | for (h = 0; h < tpg->compose.height; h++) { | |
1350 | unsigned frame_line = tpg_calc_frameline(tpg, src_y, tpg->field); | |
1351 | unsigned buf_line = tpg_calc_buffer_line(tpg, h, tpg->field); | |
1352 | const struct v4l2_rect *sq = &tpg->square; | |
1353 | const struct v4l2_rect *b = &tpg->border; | |
1354 | const struct v4l2_rect *c = &tpg->crop; | |
1355 | ||
1356 | src_y += int_part; | |
1357 | error += fract_part; | |
1358 | if (error >= tpg->compose.height) { | |
1359 | error -= tpg->compose.height; | |
1360 | src_y++; | |
1361 | } | |
1362 | ||
1363 | if (tpg->show_border && frame_line >= b->top && | |
1364 | frame_line < b->top + b->height) { | |
1365 | unsigned bottom = b->top + b->height - 1; | |
1366 | unsigned left = left_pillar_width; | |
1367 | unsigned right = right_pillar_start; | |
1368 | ||
1369 | if (frame_line == b->top || frame_line == b->top + 1 || | |
1370 | frame_line == bottom || frame_line == bottom - 1) { | |
1371 | memcpy(vbuf + buf_line * stride + left, tpg->contrast_line[p], | |
1372 | right - left); | |
1373 | } else { | |
1374 | if (b->left >= c->left && | |
1375 | b->left < c->left + c->width) | |
1376 | memcpy(vbuf + buf_line * stride + left, | |
1377 | tpg->contrast_line[p], twopixsize); | |
1378 | if (b->left + b->width > c->left && | |
1379 | b->left + b->width <= c->left + c->width) | |
1380 | memcpy(vbuf + buf_line * stride + right - twopixsize, | |
1381 | tpg->contrast_line[p], twopixsize); | |
1382 | } | |
1383 | } | |
1384 | if (tpg->qual != TPG_QUAL_NOISE && frame_line >= b->top && | |
1385 | frame_line < b->top + b->height) { | |
1386 | memcpy(vbuf + buf_line * stride, tpg->black_line[p], left_pillar_width); | |
1387 | memcpy(vbuf + buf_line * stride + right_pillar_start, tpg->black_line[p], | |
1388 | img_width - right_pillar_start); | |
1389 | } | |
1390 | if (tpg->show_square && frame_line >= sq->top && | |
1391 | frame_line < sq->top + sq->height && | |
1392 | sq->left < c->left + c->width && | |
1393 | sq->left + sq->width >= c->left) { | |
1394 | unsigned left = sq->left; | |
1395 | unsigned width = sq->width; | |
1396 | ||
1397 | if (c->left > left) { | |
1398 | width -= c->left - left; | |
1399 | left = c->left; | |
1400 | } | |
1401 | if (c->left + c->width < left + width) | |
1402 | width -= left + width - c->left - c->width; | |
1403 | left -= c->left; | |
1404 | left = (left * tpg->scaled_width) / tpg->src_width; | |
1405 | left = (left & ~1) * twopixsize / 2; | |
1406 | width = (width * tpg->scaled_width) / tpg->src_width; | |
1407 | width = (width & ~1) * twopixsize / 2; | |
1408 | memcpy(vbuf + buf_line * stride + left, tpg->contrast_line[p], width); | |
1409 | } | |
1410 | if (tpg->insert_sav) { | |
1411 | unsigned offset = (tpg->compose.width / 6) * twopixsize; | |
1412 | u8 *p = vbuf + buf_line * stride + offset; | |
1413 | unsigned vact = 0, hact = 0; | |
1414 | ||
1415 | p[0] = 0xff; | |
1416 | p[1] = 0; | |
1417 | p[2] = 0; | |
1418 | p[3] = 0x80 | (f << 6) | (vact << 5) | (hact << 4) | | |
1419 | ((hact ^ vact) << 3) | | |
1420 | ((hact ^ f) << 2) | | |
1421 | ((f ^ vact) << 1) | | |
1422 | (hact ^ vact ^ f); | |
1423 | } | |
1424 | if (tpg->insert_eav) { | |
1425 | unsigned offset = (tpg->compose.width / 6) * 2 * twopixsize; | |
1426 | u8 *p = vbuf + buf_line * stride + offset; | |
1427 | unsigned vact = 0, hact = 1; | |
1428 | ||
1429 | p[0] = 0xff; | |
1430 | p[1] = 0; | |
1431 | p[2] = 0; | |
1432 | p[3] = 0x80 | (f << 6) | (vact << 5) | (hact << 4) | | |
1433 | ((hact ^ vact) << 3) | | |
1434 | ((hact ^ f) << 2) | | |
1435 | ((f ^ vact) << 1) | | |
1436 | (hact ^ vact ^ f); | |
1437 | } | |
1438 | } | |
1439 | } |