]>
Commit | Line | Data |
---|---|---|
380282b0 CC |
1 | /* |
2 | * QEMU VNC display driver: tight encoding | |
3 | * | |
4 | * From libvncserver/libvncserver/tight.c | |
5 | * Copyright (C) 2000, 2001 Const Kaplinsky. All Rights Reserved. | |
6 | * Copyright (C) 1999 AT&T Laboratories Cambridge. All Rights Reserved. | |
7 | * | |
8 | * Copyright (C) 2010 Corentin Chary <corentin.chary@gmail.com> | |
9 | * | |
10 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
11 | * of this software and associated documentation files (the "Software"), to deal | |
12 | * in the Software without restriction, including without limitation the rights | |
13 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
14 | * copies of the Software, and to permit persons to whom the Software is | |
15 | * furnished to do so, subject to the following conditions: | |
16 | * | |
17 | * The above copyright notice and this permission notice shall be included in | |
18 | * all copies or substantial portions of the Software. | |
19 | * | |
20 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
21 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
22 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
23 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
24 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
25 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
26 | * THE SOFTWARE. | |
27 | */ | |
28 | ||
efe556ad | 29 | #include "config-host.h" |
2f6f5c7a | 30 | |
efe556ad CC |
31 | #ifdef CONFIG_VNC_PNG |
32 | #include <png.h> | |
33 | #endif | |
2f6f5c7a CC |
34 | #ifdef CONFIG_VNC_JPEG |
35 | #include <stdio.h> | |
36 | #include <jpeglib.h> | |
37 | #endif | |
38 | ||
efe556ad CC |
39 | #include "qemu-common.h" |
40 | ||
2f6f5c7a | 41 | #include "bswap.h" |
aa7d73fd | 42 | #include "qint.h" |
380282b0 | 43 | #include "vnc.h" |
245f7b51 | 44 | #include "vnc-enc-tight.h" |
5136a052 | 45 | #include "vnc-palette.h" |
380282b0 CC |
46 | |
47 | /* Compression level stuff. The following array contains various | |
48 | encoder parameters for each of 10 compression levels (0..9). | |
49 | Last three parameters correspond to JPEG quality levels (0..9). */ | |
50 | ||
51 | static const struct { | |
52 | int max_rect_size, max_rect_width; | |
53 | int mono_min_rect_size, gradient_min_rect_size; | |
54 | int idx_zlib_level, mono_zlib_level, raw_zlib_level, gradient_zlib_level; | |
55 | int gradient_threshold, gradient_threshold24; | |
56 | int idx_max_colors_divisor; | |
57 | int jpeg_quality, jpeg_threshold, jpeg_threshold24; | |
58 | } tight_conf[] = { | |
59 | { 512, 32, 6, 65536, 0, 0, 0, 0, 0, 0, 4, 5, 10000, 23000 }, | |
60 | { 2048, 128, 6, 65536, 1, 1, 1, 0, 0, 0, 8, 10, 8000, 18000 }, | |
61 | { 6144, 256, 8, 65536, 3, 3, 2, 0, 0, 0, 24, 15, 6500, 15000 }, | |
62 | { 10240, 1024, 12, 65536, 5, 5, 3, 0, 0, 0, 32, 25, 5000, 12000 }, | |
63 | { 16384, 2048, 12, 65536, 6, 6, 4, 0, 0, 0, 32, 37, 4000, 10000 }, | |
64 | { 32768, 2048, 12, 4096, 7, 7, 5, 4, 150, 380, 32, 50, 3000, 8000 }, | |
65 | { 65536, 2048, 16, 4096, 7, 7, 6, 4, 170, 420, 48, 60, 2000, 5000 }, | |
66 | { 65536, 2048, 16, 4096, 8, 8, 7, 5, 180, 450, 64, 70, 1000, 2500 }, | |
67 | { 65536, 2048, 32, 8192, 9, 9, 8, 6, 190, 475, 64, 75, 500, 1200 }, | |
68 | { 65536, 2048, 32, 8192, 9, 9, 9, 6, 200, 500, 96, 80, 200, 500 } | |
69 | }; | |
70 | ||
efe556ad CC |
71 | |
72 | static int tight_send_framebuffer_update(VncState *vs, int x, int y, | |
73 | int w, int h); | |
74 | ||
ce702e93 CC |
75 | #ifdef CONFIG_VNC_JPEG |
76 | static const struct { | |
77 | double jpeg_freq_min; /* Don't send JPEG if the freq is bellow */ | |
78 | double jpeg_freq_threshold; /* Always send JPEG if the freq is above */ | |
79 | int jpeg_idx; /* Allow indexed JPEG */ | |
80 | int jpeg_full; /* Allow full color JPEG */ | |
81 | } tight_jpeg_conf[] = { | |
8cb4a6b7 CC |
82 | { 0, 8, 1, 1 }, |
83 | { 0, 8, 1, 1 }, | |
84 | { 0, 8, 1, 1 }, | |
85 | { 0, 8, 1, 1 }, | |
86 | { 0, 10, 1, 1 }, | |
87 | { 0.1, 10, 1, 1 }, | |
88 | { 0.2, 10, 1, 1 }, | |
89 | { 0.3, 12, 0, 0 }, | |
90 | { 0.4, 14, 0, 0 }, | |
91 | { 0.5, 16, 0, 0 }, | |
ce702e93 CC |
92 | }; |
93 | #endif | |
94 | ||
efe556ad | 95 | #ifdef CONFIG_VNC_PNG |
3941bf6f CC |
96 | static const struct { |
97 | int png_zlib_level, png_filters; | |
98 | } tight_png_conf[] = { | |
99 | { 0, PNG_NO_FILTERS }, | |
100 | { 1, PNG_NO_FILTERS }, | |
101 | { 2, PNG_NO_FILTERS }, | |
102 | { 3, PNG_NO_FILTERS }, | |
103 | { 4, PNG_NO_FILTERS }, | |
104 | { 5, PNG_ALL_FILTERS }, | |
105 | { 6, PNG_ALL_FILTERS }, | |
106 | { 7, PNG_ALL_FILTERS }, | |
107 | { 8, PNG_ALL_FILTERS }, | |
108 | { 9, PNG_ALL_FILTERS }, | |
109 | }; | |
110 | ||
efe556ad | 111 | static int send_png_rect(VncState *vs, int x, int y, int w, int h, |
5136a052 | 112 | VncPalette *palette); |
efe556ad CC |
113 | |
114 | static bool tight_can_send_png_rect(VncState *vs, int w, int h) | |
115 | { | |
d1af0e05 | 116 | if (vs->tight.type != VNC_ENCODING_TIGHT_PNG) { |
efe556ad CC |
117 | return false; |
118 | } | |
119 | ||
120 | if (ds_get_bytes_per_pixel(vs->ds) == 1 || | |
121 | vs->clientds.pf.bytes_per_pixel == 1) { | |
122 | return false; | |
123 | } | |
124 | ||
125 | return true; | |
126 | } | |
127 | #endif | |
128 | ||
2f6f5c7a CC |
129 | /* |
130 | * Code to guess if given rectangle is suitable for smooth image | |
131 | * compression (by applying "gradient" filter or JPEG coder). | |
132 | */ | |
133 | ||
249cdb42 | 134 | static unsigned int |
2f6f5c7a CC |
135 | tight_detect_smooth_image24(VncState *vs, int w, int h) |
136 | { | |
137 | int off; | |
138 | int x, y, d, dx; | |
249cdb42 BS |
139 | unsigned int c; |
140 | unsigned int stats[256]; | |
2f6f5c7a CC |
141 | int pixels = 0; |
142 | int pix, left[3]; | |
249cdb42 | 143 | unsigned int errors; |
d1af0e05 | 144 | unsigned char *buf = vs->tight.tight.buffer; |
2f6f5c7a CC |
145 | |
146 | /* | |
147 | * If client is big-endian, color samples begin from the second | |
148 | * byte (offset 1) of a 32-bit pixel value. | |
149 | */ | |
150 | off = !!(vs->clientds.flags & QEMU_BIG_ENDIAN_FLAG); | |
151 | ||
152 | memset(stats, 0, sizeof (stats)); | |
153 | ||
154 | for (y = 0, x = 0; y < h && x < w;) { | |
155 | for (d = 0; d < h - y && d < w - x - VNC_TIGHT_DETECT_SUBROW_WIDTH; | |
156 | d++) { | |
157 | for (c = 0; c < 3; c++) { | |
158 | left[c] = buf[((y+d)*w+x+d)*4+off+c] & 0xFF; | |
159 | } | |
160 | for (dx = 1; dx <= VNC_TIGHT_DETECT_SUBROW_WIDTH; dx++) { | |
161 | for (c = 0; c < 3; c++) { | |
162 | pix = buf[((y+d)*w+x+d+dx)*4+off+c] & 0xFF; | |
163 | stats[abs(pix - left[c])]++; | |
164 | left[c] = pix; | |
165 | } | |
166 | pixels++; | |
167 | } | |
168 | } | |
169 | if (w > h) { | |
170 | x += h; | |
171 | y = 0; | |
172 | } else { | |
173 | x = 0; | |
174 | y += w; | |
175 | } | |
176 | } | |
177 | ||
178 | /* 95% smooth or more ... */ | |
179 | if (stats[0] * 33 / pixels >= 95) { | |
180 | return 0; | |
181 | } | |
182 | ||
183 | errors = 0; | |
184 | for (c = 1; c < 8; c++) { | |
185 | errors += stats[c] * (c * c); | |
186 | if (stats[c] == 0 || stats[c] > stats[c-1] * 2) { | |
187 | return 0; | |
188 | } | |
189 | } | |
190 | for (; c < 256; c++) { | |
191 | errors += stats[c] * (c * c); | |
192 | } | |
193 | errors /= (pixels * 3 - stats[0]); | |
194 | ||
195 | return errors; | |
196 | } | |
197 | ||
198 | #define DEFINE_DETECT_FUNCTION(bpp) \ | |
199 | \ | |
249cdb42 | 200 | static unsigned int \ |
2f6f5c7a CC |
201 | tight_detect_smooth_image##bpp(VncState *vs, int w, int h) { \ |
202 | bool endian; \ | |
203 | uint##bpp##_t pix; \ | |
204 | int max[3], shift[3]; \ | |
205 | int x, y, d, dx; \ | |
249cdb42 BS |
206 | unsigned int c; \ |
207 | unsigned int stats[256]; \ | |
2f6f5c7a CC |
208 | int pixels = 0; \ |
209 | int sample, sum, left[3]; \ | |
249cdb42 | 210 | unsigned int errors; \ |
d1af0e05 | 211 | unsigned char *buf = vs->tight.tight.buffer; \ |
2f6f5c7a CC |
212 | \ |
213 | endian = ((vs->clientds.flags & QEMU_BIG_ENDIAN_FLAG) != \ | |
214 | (vs->ds->surface->flags & QEMU_BIG_ENDIAN_FLAG)); \ | |
215 | \ | |
216 | \ | |
217 | max[0] = vs->clientds.pf.rmax; \ | |
218 | max[1] = vs->clientds.pf.gmax; \ | |
219 | max[2] = vs->clientds.pf.bmax; \ | |
220 | shift[0] = vs->clientds.pf.rshift; \ | |
221 | shift[1] = vs->clientds.pf.gshift; \ | |
222 | shift[2] = vs->clientds.pf.bshift; \ | |
223 | \ | |
224 | memset(stats, 0, sizeof(stats)); \ | |
225 | \ | |
226 | y = 0, x = 0; \ | |
227 | while (y < h && x < w) { \ | |
228 | for (d = 0; d < h - y && \ | |
229 | d < w - x - VNC_TIGHT_DETECT_SUBROW_WIDTH; d++) { \ | |
230 | pix = ((uint##bpp##_t *)buf)[(y+d)*w+x+d]; \ | |
231 | if (endian) { \ | |
ba5e7f82 | 232 | pix = bswap##bpp(pix); \ |
2f6f5c7a CC |
233 | } \ |
234 | for (c = 0; c < 3; c++) { \ | |
235 | left[c] = (int)(pix >> shift[c] & max[c]); \ | |
236 | } \ | |
237 | for (dx = 1; dx <= VNC_TIGHT_DETECT_SUBROW_WIDTH; \ | |
238 | dx++) { \ | |
239 | pix = ((uint##bpp##_t *)buf)[(y+d)*w+x+d+dx]; \ | |
240 | if (endian) { \ | |
ba5e7f82 | 241 | pix = bswap##bpp(pix); \ |
2f6f5c7a CC |
242 | } \ |
243 | sum = 0; \ | |
244 | for (c = 0; c < 3; c++) { \ | |
245 | sample = (int)(pix >> shift[c] & max[c]); \ | |
246 | sum += abs(sample - left[c]); \ | |
247 | left[c] = sample; \ | |
248 | } \ | |
249 | if (sum > 255) { \ | |
250 | sum = 255; \ | |
251 | } \ | |
252 | stats[sum]++; \ | |
253 | pixels++; \ | |
254 | } \ | |
255 | } \ | |
256 | if (w > h) { \ | |
257 | x += h; \ | |
258 | y = 0; \ | |
259 | } else { \ | |
260 | x = 0; \ | |
261 | y += w; \ | |
262 | } \ | |
263 | } \ | |
264 | \ | |
265 | if ((stats[0] + stats[1]) * 100 / pixels >= 90) { \ | |
266 | return 0; \ | |
267 | } \ | |
268 | \ | |
269 | errors = 0; \ | |
270 | for (c = 1; c < 8; c++) { \ | |
271 | errors += stats[c] * (c * c); \ | |
272 | if (stats[c] == 0 || stats[c] > stats[c-1] * 2) { \ | |
273 | return 0; \ | |
274 | } \ | |
275 | } \ | |
276 | for (; c < 256; c++) { \ | |
277 | errors += stats[c] * (c * c); \ | |
278 | } \ | |
279 | errors /= (pixels - stats[0]); \ | |
280 | \ | |
281 | return errors; \ | |
282 | } | |
283 | ||
284 | DEFINE_DETECT_FUNCTION(16) | |
285 | DEFINE_DETECT_FUNCTION(32) | |
286 | ||
287 | static int | |
288 | tight_detect_smooth_image(VncState *vs, int w, int h) | |
289 | { | |
249cdb42 | 290 | unsigned int errors; |
d1af0e05 CC |
291 | int compression = vs->tight.compression; |
292 | int quality = vs->tight.quality; | |
2f6f5c7a | 293 | |
6f9c78c1 CC |
294 | if (!vs->vd->lossy) { |
295 | return 0; | |
296 | } | |
297 | ||
2f6f5c7a CC |
298 | if (ds_get_bytes_per_pixel(vs->ds) == 1 || |
299 | vs->clientds.pf.bytes_per_pixel == 1 || | |
300 | w < VNC_TIGHT_DETECT_MIN_WIDTH || h < VNC_TIGHT_DETECT_MIN_HEIGHT) { | |
301 | return 0; | |
302 | } | |
303 | ||
7bccf573 | 304 | if (vs->tight.quality != (uint8_t)-1) { |
2f6f5c7a CC |
305 | if (w * h < VNC_TIGHT_JPEG_MIN_RECT_SIZE) { |
306 | return 0; | |
307 | } | |
308 | } else { | |
309 | if (w * h < tight_conf[compression].gradient_min_rect_size) { | |
310 | return 0; | |
311 | } | |
312 | } | |
313 | ||
314 | if (vs->clientds.pf.bytes_per_pixel == 4) { | |
d1af0e05 | 315 | if (vs->tight.pixel24) { |
2f6f5c7a | 316 | errors = tight_detect_smooth_image24(vs, w, h); |
7bccf573 | 317 | if (vs->tight.quality != (uint8_t)-1) { |
2f6f5c7a CC |
318 | return (errors < tight_conf[quality].jpeg_threshold24); |
319 | } | |
320 | return (errors < tight_conf[compression].gradient_threshold24); | |
321 | } else { | |
322 | errors = tight_detect_smooth_image32(vs, w, h); | |
323 | } | |
324 | } else { | |
325 | errors = tight_detect_smooth_image16(vs, w, h); | |
326 | } | |
327 | if (quality != -1) { | |
328 | return (errors < tight_conf[quality].jpeg_threshold); | |
329 | } | |
330 | return (errors < tight_conf[compression].gradient_threshold); | |
331 | } | |
332 | ||
aa7d73fd CC |
333 | /* |
334 | * Code to determine how many different colors used in rectangle. | |
335 | */ | |
aa7d73fd CC |
336 | #define DEFINE_FILL_PALETTE_FUNCTION(bpp) \ |
337 | \ | |
338 | static int \ | |
339 | tight_fill_palette##bpp(VncState *vs, int x, int y, \ | |
340 | int max, size_t count, \ | |
341 | uint32_t *bg, uint32_t *fg, \ | |
5136a052 | 342 | VncPalette **palette) { \ |
aa7d73fd CC |
343 | uint##bpp##_t *data; \ |
344 | uint##bpp##_t c0, c1, ci; \ | |
345 | int i, n0, n1; \ | |
346 | \ | |
d1af0e05 | 347 | data = (uint##bpp##_t *)vs->tight.tight.buffer; \ |
aa7d73fd CC |
348 | \ |
349 | c0 = data[0]; \ | |
350 | i = 1; \ | |
351 | while (i < count && data[i] == c0) \ | |
352 | i++; \ | |
353 | if (i >= count) { \ | |
354 | *bg = *fg = c0; \ | |
355 | return 1; \ | |
356 | } \ | |
357 | \ | |
358 | if (max < 2) { \ | |
359 | return 0; \ | |
360 | } \ | |
361 | \ | |
362 | n0 = i; \ | |
363 | c1 = data[i]; \ | |
364 | n1 = 0; \ | |
365 | for (i++; i < count; i++) { \ | |
366 | ci = data[i]; \ | |
367 | if (ci == c0) { \ | |
368 | n0++; \ | |
369 | } else if (ci == c1) { \ | |
370 | n1++; \ | |
371 | } else \ | |
372 | break; \ | |
373 | } \ | |
374 | if (i >= count) { \ | |
375 | if (n0 > n1) { \ | |
376 | *bg = (uint32_t)c0; \ | |
377 | *fg = (uint32_t)c1; \ | |
378 | } else { \ | |
379 | *bg = (uint32_t)c1; \ | |
380 | *fg = (uint32_t)c0; \ | |
381 | } \ | |
382 | return 2; \ | |
383 | } \ | |
384 | \ | |
385 | if (max == 2) { \ | |
386 | return 0; \ | |
387 | } \ | |
388 | \ | |
5136a052 CC |
389 | *palette = palette_new(max, bpp); \ |
390 | palette_put(*palette, c0); \ | |
391 | palette_put(*palette, c1); \ | |
392 | palette_put(*palette, ci); \ | |
aa7d73fd CC |
393 | \ |
394 | for (i++; i < count; i++) { \ | |
395 | if (data[i] == ci) { \ | |
396 | continue; \ | |
397 | } else { \ | |
5d8efe39 | 398 | ci = data[i]; \ |
5136a052 | 399 | if (!palette_put(*palette, (uint32_t)ci)) { \ |
aa7d73fd CC |
400 | return 0; \ |
401 | } \ | |
aa7d73fd CC |
402 | } \ |
403 | } \ | |
404 | \ | |
5136a052 | 405 | return palette_size(*palette); \ |
aa7d73fd CC |
406 | } |
407 | ||
408 | DEFINE_FILL_PALETTE_FUNCTION(8) | |
409 | DEFINE_FILL_PALETTE_FUNCTION(16) | |
410 | DEFINE_FILL_PALETTE_FUNCTION(32) | |
411 | ||
412 | static int tight_fill_palette(VncState *vs, int x, int y, | |
413 | size_t count, uint32_t *bg, uint32_t *fg, | |
5136a052 | 414 | VncPalette **palette) |
aa7d73fd CC |
415 | { |
416 | int max; | |
417 | ||
d1af0e05 | 418 | max = count / tight_conf[vs->tight.compression].idx_max_colors_divisor; |
aa7d73fd | 419 | if (max < 2 && |
d1af0e05 | 420 | count >= tight_conf[vs->tight.compression].mono_min_rect_size) { |
aa7d73fd CC |
421 | max = 2; |
422 | } | |
423 | if (max >= 256) { | |
424 | max = 256; | |
425 | } | |
426 | ||
427 | switch(vs->clientds.pf.bytes_per_pixel) { | |
428 | case 4: | |
429 | return tight_fill_palette32(vs, x, y, max, count, bg, fg, palette); | |
430 | case 2: | |
431 | return tight_fill_palette16(vs, x, y, max, count, bg, fg, palette); | |
432 | default: | |
433 | max = 2; | |
434 | return tight_fill_palette8(vs, x, y, max, count, bg, fg, palette); | |
435 | } | |
436 | return 0; | |
437 | } | |
438 | ||
aa7d73fd CC |
439 | /* |
440 | * Converting truecolor samples into palette indices. | |
441 | */ | |
442 | #define DEFINE_IDX_ENCODE_FUNCTION(bpp) \ | |
443 | \ | |
444 | static void \ | |
445 | tight_encode_indexed_rect##bpp(uint8_t *buf, int count, \ | |
5136a052 | 446 | VncPalette *palette) { \ |
aa7d73fd CC |
447 | uint##bpp##_t *src; \ |
448 | uint##bpp##_t rgb; \ | |
54d43eac | 449 | int i, rep; \ |
aa7d73fd CC |
450 | uint8_t idx; \ |
451 | \ | |
452 | src = (uint##bpp##_t *) buf; \ | |
453 | \ | |
54d43eac | 454 | for (i = 0; i < count; i++) { \ |
efe556ad | 455 | \ |
aa7d73fd CC |
456 | rgb = *src++; \ |
457 | rep = 0; \ | |
54d43eac CC |
458 | while (i < count && *src == rgb) { \ |
459 | rep++, src++, i++; \ | |
aa7d73fd | 460 | } \ |
5136a052 CC |
461 | idx = palette_idx(palette, rgb); \ |
462 | /* \ | |
463 | * Should never happen, but don't break everything \ | |
464 | * if it does, use the first color instead \ | |
465 | */ \ | |
7bccf573 | 466 | if (idx == (uint8_t)-1) { \ |
aa7d73fd | 467 | idx = 0; \ |
aa7d73fd CC |
468 | } \ |
469 | while (rep >= 0) { \ | |
470 | *buf++ = idx; \ | |
471 | rep--; \ | |
472 | } \ | |
473 | } \ | |
474 | } | |
475 | ||
476 | DEFINE_IDX_ENCODE_FUNCTION(16) | |
477 | DEFINE_IDX_ENCODE_FUNCTION(32) | |
478 | ||
479 | #define DEFINE_MONO_ENCODE_FUNCTION(bpp) \ | |
480 | \ | |
481 | static void \ | |
482 | tight_encode_mono_rect##bpp(uint8_t *buf, int w, int h, \ | |
483 | uint##bpp##_t bg, uint##bpp##_t fg) { \ | |
484 | uint##bpp##_t *ptr; \ | |
485 | unsigned int value, mask; \ | |
486 | int aligned_width; \ | |
487 | int x, y, bg_bits; \ | |
488 | \ | |
489 | ptr = (uint##bpp##_t *) buf; \ | |
490 | aligned_width = w - w % 8; \ | |
491 | \ | |
492 | for (y = 0; y < h; y++) { \ | |
493 | for (x = 0; x < aligned_width; x += 8) { \ | |
494 | for (bg_bits = 0; bg_bits < 8; bg_bits++) { \ | |
495 | if (*ptr++ != bg) { \ | |
496 | break; \ | |
497 | } \ | |
498 | } \ | |
499 | if (bg_bits == 8) { \ | |
500 | *buf++ = 0; \ | |
501 | continue; \ | |
502 | } \ | |
503 | mask = 0x80 >> bg_bits; \ | |
504 | value = mask; \ | |
505 | for (bg_bits++; bg_bits < 8; bg_bits++) { \ | |
506 | mask >>= 1; \ | |
507 | if (*ptr++ != bg) { \ | |
508 | value |= mask; \ | |
509 | } \ | |
510 | } \ | |
511 | *buf++ = (uint8_t)value; \ | |
512 | } \ | |
513 | \ | |
514 | mask = 0x80; \ | |
515 | value = 0; \ | |
516 | if (x >= w) { \ | |
517 | continue; \ | |
518 | } \ | |
519 | \ | |
520 | for (; x < w; x++) { \ | |
521 | if (*ptr++ != bg) { \ | |
522 | value |= mask; \ | |
523 | } \ | |
524 | mask >>= 1; \ | |
525 | } \ | |
526 | *buf++ = (uint8_t)value; \ | |
527 | } \ | |
528 | } | |
529 | ||
530 | DEFINE_MONO_ENCODE_FUNCTION(8) | |
531 | DEFINE_MONO_ENCODE_FUNCTION(16) | |
532 | DEFINE_MONO_ENCODE_FUNCTION(32) | |
533 | ||
2f6f5c7a CC |
534 | /* |
535 | * ``Gradient'' filter for 24-bit color samples. | |
536 | * Should be called only when redMax, greenMax and blueMax are 255. | |
537 | * Color components assumed to be byte-aligned. | |
538 | */ | |
539 | ||
540 | static void | |
541 | tight_filter_gradient24(VncState *vs, uint8_t *buf, int w, int h) | |
542 | { | |
543 | uint32_t *buf32; | |
544 | uint32_t pix32; | |
545 | int shift[3]; | |
546 | int *prev; | |
547 | int here[3], upper[3], left[3], upperleft[3]; | |
548 | int prediction; | |
549 | int x, y, c; | |
550 | ||
551 | buf32 = (uint32_t *)buf; | |
d1af0e05 | 552 | memset(vs->tight.gradient.buffer, 0, w * 3 * sizeof(int)); |
2f6f5c7a CC |
553 | |
554 | if ((vs->clientds.flags & QEMU_BIG_ENDIAN_FLAG) == | |
555 | (vs->ds->surface->flags & QEMU_BIG_ENDIAN_FLAG)) { | |
556 | shift[0] = vs->clientds.pf.rshift; | |
557 | shift[1] = vs->clientds.pf.gshift; | |
558 | shift[2] = vs->clientds.pf.bshift; | |
559 | } else { | |
560 | shift[0] = 24 - vs->clientds.pf.rshift; | |
561 | shift[1] = 24 - vs->clientds.pf.gshift; | |
562 | shift[2] = 24 - vs->clientds.pf.bshift; | |
563 | } | |
564 | ||
565 | for (y = 0; y < h; y++) { | |
566 | for (c = 0; c < 3; c++) { | |
567 | upper[c] = 0; | |
568 | here[c] = 0; | |
569 | } | |
d1af0e05 | 570 | prev = (int *)vs->tight.gradient.buffer; |
2f6f5c7a CC |
571 | for (x = 0; x < w; x++) { |
572 | pix32 = *buf32++; | |
573 | for (c = 0; c < 3; c++) { | |
574 | upperleft[c] = upper[c]; | |
575 | left[c] = here[c]; | |
576 | upper[c] = *prev; | |
577 | here[c] = (int)(pix32 >> shift[c] & 0xFF); | |
578 | *prev++ = here[c]; | |
579 | ||
580 | prediction = left[c] + upper[c] - upperleft[c]; | |
581 | if (prediction < 0) { | |
582 | prediction = 0; | |
583 | } else if (prediction > 0xFF) { | |
584 | prediction = 0xFF; | |
585 | } | |
586 | *buf++ = (char)(here[c] - prediction); | |
587 | } | |
588 | } | |
589 | } | |
590 | } | |
591 | ||
592 | ||
593 | /* | |
594 | * ``Gradient'' filter for other color depths. | |
595 | */ | |
596 | ||
597 | #define DEFINE_GRADIENT_FILTER_FUNCTION(bpp) \ | |
598 | \ | |
599 | static void \ | |
600 | tight_filter_gradient##bpp(VncState *vs, uint##bpp##_t *buf, \ | |
601 | int w, int h) { \ | |
602 | uint##bpp##_t pix, diff; \ | |
603 | bool endian; \ | |
604 | int *prev; \ | |
605 | int max[3], shift[3]; \ | |
606 | int here[3], upper[3], left[3], upperleft[3]; \ | |
607 | int prediction; \ | |
608 | int x, y, c; \ | |
609 | \ | |
d1af0e05 | 610 | memset (vs->tight.gradient.buffer, 0, w * 3 * sizeof(int)); \ |
2f6f5c7a CC |
611 | \ |
612 | endian = ((vs->clientds.flags & QEMU_BIG_ENDIAN_FLAG) != \ | |
613 | (vs->ds->surface->flags & QEMU_BIG_ENDIAN_FLAG)); \ | |
614 | \ | |
615 | max[0] = vs->clientds.pf.rmax; \ | |
616 | max[1] = vs->clientds.pf.gmax; \ | |
617 | max[2] = vs->clientds.pf.bmax; \ | |
618 | shift[0] = vs->clientds.pf.rshift; \ | |
619 | shift[1] = vs->clientds.pf.gshift; \ | |
620 | shift[2] = vs->clientds.pf.bshift; \ | |
621 | \ | |
622 | for (y = 0; y < h; y++) { \ | |
623 | for (c = 0; c < 3; c++) { \ | |
624 | upper[c] = 0; \ | |
625 | here[c] = 0; \ | |
626 | } \ | |
d1af0e05 | 627 | prev = (int *)vs->tight.gradient.buffer; \ |
2f6f5c7a CC |
628 | for (x = 0; x < w; x++) { \ |
629 | pix = *buf; \ | |
630 | if (endian) { \ | |
ba5e7f82 | 631 | pix = bswap##bpp(pix); \ |
2f6f5c7a CC |
632 | } \ |
633 | diff = 0; \ | |
634 | for (c = 0; c < 3; c++) { \ | |
635 | upperleft[c] = upper[c]; \ | |
636 | left[c] = here[c]; \ | |
637 | upper[c] = *prev; \ | |
638 | here[c] = (int)(pix >> shift[c] & max[c]); \ | |
639 | *prev++ = here[c]; \ | |
640 | \ | |
641 | prediction = left[c] + upper[c] - upperleft[c]; \ | |
642 | if (prediction < 0) { \ | |
643 | prediction = 0; \ | |
644 | } else if (prediction > max[c]) { \ | |
645 | prediction = max[c]; \ | |
646 | } \ | |
647 | diff |= ((here[c] - prediction) & max[c]) \ | |
648 | << shift[c]; \ | |
649 | } \ | |
650 | if (endian) { \ | |
ba5e7f82 | 651 | diff = bswap##bpp(diff); \ |
2f6f5c7a CC |
652 | } \ |
653 | *buf++ = diff; \ | |
654 | } \ | |
655 | } \ | |
656 | } | |
657 | ||
658 | DEFINE_GRADIENT_FILTER_FUNCTION(16) | |
659 | DEFINE_GRADIENT_FILTER_FUNCTION(32) | |
660 | ||
b4bea3f2 CC |
661 | /* |
662 | * Check if a rectangle is all of the same color. If needSameColor is | |
663 | * set to non-zero, then also check that its color equals to the | |
b0cd712c | 664 | * *colorPtr value. The result is 1 if the test is successful, and in |
b4bea3f2 CC |
665 | * that case new color will be stored in *colorPtr. |
666 | */ | |
667 | ||
668 | #define DEFINE_CHECK_SOLID_FUNCTION(bpp) \ | |
669 | \ | |
670 | static bool \ | |
671 | check_solid_tile##bpp(VncState *vs, int x, int y, int w, int h, \ | |
672 | uint32_t* color, bool samecolor) \ | |
673 | { \ | |
674 | VncDisplay *vd = vs->vd; \ | |
675 | uint##bpp##_t *fbptr; \ | |
676 | uint##bpp##_t c; \ | |
677 | int dx, dy; \ | |
678 | \ | |
679 | fbptr = (uint##bpp##_t *) \ | |
680 | (vd->server->data + y * ds_get_linesize(vs->ds) + \ | |
681 | x * ds_get_bytes_per_pixel(vs->ds)); \ | |
682 | \ | |
683 | c = *fbptr; \ | |
684 | if (samecolor && (uint32_t)c != *color) { \ | |
685 | return false; \ | |
686 | } \ | |
687 | \ | |
688 | for (dy = 0; dy < h; dy++) { \ | |
689 | for (dx = 0; dx < w; dx++) { \ | |
690 | if (c != fbptr[dx]) { \ | |
691 | return false; \ | |
692 | } \ | |
693 | } \ | |
694 | fbptr = (uint##bpp##_t *) \ | |
695 | ((uint8_t *)fbptr + ds_get_linesize(vs->ds)); \ | |
696 | } \ | |
697 | \ | |
698 | *color = (uint32_t)c; \ | |
699 | return true; \ | |
700 | } | |
701 | ||
702 | DEFINE_CHECK_SOLID_FUNCTION(32) | |
703 | DEFINE_CHECK_SOLID_FUNCTION(16) | |
704 | DEFINE_CHECK_SOLID_FUNCTION(8) | |
705 | ||
706 | static bool check_solid_tile(VncState *vs, int x, int y, int w, int h, | |
707 | uint32_t* color, bool samecolor) | |
708 | { | |
709 | VncDisplay *vd = vs->vd; | |
710 | ||
711 | switch(vd->server->pf.bytes_per_pixel) { | |
712 | case 4: | |
713 | return check_solid_tile32(vs, x, y, w, h, color, samecolor); | |
714 | case 2: | |
715 | return check_solid_tile16(vs, x, y, w, h, color, samecolor); | |
716 | default: | |
717 | return check_solid_tile8(vs, x, y, w, h, color, samecolor); | |
718 | } | |
719 | } | |
720 | ||
721 | static void find_best_solid_area(VncState *vs, int x, int y, int w, int h, | |
722 | uint32_t color, int *w_ptr, int *h_ptr) | |
723 | { | |
724 | int dx, dy, dw, dh; | |
725 | int w_prev; | |
726 | int w_best = 0, h_best = 0; | |
727 | ||
728 | w_prev = w; | |
729 | ||
730 | for (dy = y; dy < y + h; dy += VNC_TIGHT_MAX_SPLIT_TILE_SIZE) { | |
731 | ||
732 | dh = MIN(VNC_TIGHT_MAX_SPLIT_TILE_SIZE, y + h - dy); | |
733 | dw = MIN(VNC_TIGHT_MAX_SPLIT_TILE_SIZE, w_prev); | |
734 | ||
735 | if (!check_solid_tile(vs, x, dy, dw, dh, &color, true)) { | |
736 | break; | |
737 | } | |
738 | ||
739 | for (dx = x + dw; dx < x + w_prev;) { | |
740 | dw = MIN(VNC_TIGHT_MAX_SPLIT_TILE_SIZE, x + w_prev - dx); | |
741 | ||
742 | if (!check_solid_tile(vs, dx, dy, dw, dh, &color, true)) { | |
743 | break; | |
744 | } | |
745 | dx += dw; | |
746 | } | |
747 | ||
748 | w_prev = dx - x; | |
749 | if (w_prev * (dy + dh - y) > w_best * h_best) { | |
750 | w_best = w_prev; | |
751 | h_best = dy + dh - y; | |
752 | } | |
753 | } | |
754 | ||
755 | *w_ptr = w_best; | |
756 | *h_ptr = h_best; | |
757 | } | |
758 | ||
759 | static void extend_solid_area(VncState *vs, int x, int y, int w, int h, | |
760 | uint32_t color, int *x_ptr, int *y_ptr, | |
761 | int *w_ptr, int *h_ptr) | |
762 | { | |
763 | int cx, cy; | |
764 | ||
765 | /* Try to extend the area upwards. */ | |
766 | for ( cy = *y_ptr - 1; | |
767 | cy >= y && check_solid_tile(vs, *x_ptr, cy, *w_ptr, 1, &color, true); | |
768 | cy-- ); | |
769 | *h_ptr += *y_ptr - (cy + 1); | |
770 | *y_ptr = cy + 1; | |
771 | ||
772 | /* ... downwards. */ | |
773 | for ( cy = *y_ptr + *h_ptr; | |
774 | cy < y + h && | |
775 | check_solid_tile(vs, *x_ptr, cy, *w_ptr, 1, &color, true); | |
776 | cy++ ); | |
777 | *h_ptr += cy - (*y_ptr + *h_ptr); | |
778 | ||
779 | /* ... to the left. */ | |
780 | for ( cx = *x_ptr - 1; | |
781 | cx >= x && check_solid_tile(vs, cx, *y_ptr, 1, *h_ptr, &color, true); | |
782 | cx-- ); | |
783 | *w_ptr += *x_ptr - (cx + 1); | |
784 | *x_ptr = cx + 1; | |
785 | ||
786 | /* ... to the right. */ | |
787 | for ( cx = *x_ptr + *w_ptr; | |
788 | cx < x + w && | |
789 | check_solid_tile(vs, cx, *y_ptr, 1, *h_ptr, &color, true); | |
790 | cx++ ); | |
791 | *w_ptr += cx - (*x_ptr + *w_ptr); | |
792 | } | |
793 | ||
380282b0 CC |
794 | static int tight_init_stream(VncState *vs, int stream_id, |
795 | int level, int strategy) | |
796 | { | |
d1af0e05 | 797 | z_streamp zstream = &vs->tight.stream[stream_id]; |
380282b0 CC |
798 | |
799 | if (zstream->opaque == NULL) { | |
800 | int err; | |
801 | ||
802 | VNC_DEBUG("VNC: TIGHT: initializing zlib stream %d\n", stream_id); | |
803 | VNC_DEBUG("VNC: TIGHT: opaque = %p | vs = %p\n", zstream->opaque, vs); | |
804 | zstream->zalloc = vnc_zlib_zalloc; | |
805 | zstream->zfree = vnc_zlib_zfree; | |
806 | ||
807 | err = deflateInit2(zstream, level, Z_DEFLATED, MAX_WBITS, | |
808 | MAX_MEM_LEVEL, strategy); | |
809 | ||
810 | if (err != Z_OK) { | |
811 | fprintf(stderr, "VNC: error initializing zlib\n"); | |
812 | return -1; | |
813 | } | |
814 | ||
d1af0e05 | 815 | vs->tight.levels[stream_id] = level; |
380282b0 CC |
816 | zstream->opaque = vs; |
817 | } | |
818 | ||
d1af0e05 | 819 | if (vs->tight.levels[stream_id] != level) { |
380282b0 CC |
820 | if (deflateParams(zstream, level, strategy) != Z_OK) { |
821 | return -1; | |
822 | } | |
d1af0e05 | 823 | vs->tight.levels[stream_id] = level; |
380282b0 CC |
824 | } |
825 | return 0; | |
826 | } | |
827 | ||
828 | static void tight_send_compact_size(VncState *vs, size_t len) | |
829 | { | |
830 | int lpc = 0; | |
831 | int bytes = 0; | |
832 | char buf[3] = {0, 0, 0}; | |
833 | ||
834 | buf[bytes++] = len & 0x7F; | |
835 | if (len > 0x7F) { | |
836 | buf[bytes-1] |= 0x80; | |
837 | buf[bytes++] = (len >> 7) & 0x7F; | |
838 | if (len > 0x3FFF) { | |
839 | buf[bytes-1] |= 0x80; | |
840 | buf[bytes++] = (len >> 14) & 0xFF; | |
841 | } | |
842 | } | |
b4bea3f2 | 843 | for (lpc = 0; lpc < bytes; lpc++) { |
380282b0 CC |
844 | vnc_write_u8(vs, buf[lpc]); |
845 | } | |
846 | } | |
847 | ||
848 | static int tight_compress_data(VncState *vs, int stream_id, size_t bytes, | |
849 | int level, int strategy) | |
850 | { | |
d1af0e05 | 851 | z_streamp zstream = &vs->tight.stream[stream_id]; |
380282b0 CC |
852 | int previous_out; |
853 | ||
854 | if (bytes < VNC_TIGHT_MIN_TO_COMPRESS) { | |
d1af0e05 | 855 | vnc_write(vs, vs->tight.tight.buffer, vs->tight.tight.offset); |
380282b0 CC |
856 | return bytes; |
857 | } | |
858 | ||
859 | if (tight_init_stream(vs, stream_id, level, strategy)) { | |
860 | return -1; | |
861 | } | |
862 | ||
863 | /* reserve memory in output buffer */ | |
d1af0e05 | 864 | buffer_reserve(&vs->tight.zlib, bytes + 64); |
380282b0 CC |
865 | |
866 | /* set pointers */ | |
d1af0e05 CC |
867 | zstream->next_in = vs->tight.tight.buffer; |
868 | zstream->avail_in = vs->tight.tight.offset; | |
869 | zstream->next_out = vs->tight.zlib.buffer + vs->tight.zlib.offset; | |
870 | zstream->avail_out = vs->tight.zlib.capacity - vs->tight.zlib.offset; | |
2caa9e9d | 871 | previous_out = zstream->avail_out; |
380282b0 | 872 | zstream->data_type = Z_BINARY; |
380282b0 CC |
873 | |
874 | /* start encoding */ | |
875 | if (deflate(zstream, Z_SYNC_FLUSH) != Z_OK) { | |
876 | fprintf(stderr, "VNC: error during tight compression\n"); | |
877 | return -1; | |
878 | } | |
879 | ||
d1af0e05 | 880 | vs->tight.zlib.offset = vs->tight.zlib.capacity - zstream->avail_out; |
2caa9e9d MT |
881 | /* ...how much data has actually been produced by deflate() */ |
882 | bytes = previous_out - zstream->avail_out; | |
380282b0 CC |
883 | |
884 | tight_send_compact_size(vs, bytes); | |
d1af0e05 | 885 | vnc_write(vs, vs->tight.zlib.buffer, bytes); |
380282b0 | 886 | |
d1af0e05 | 887 | buffer_reset(&vs->tight.zlib); |
380282b0 CC |
888 | |
889 | return bytes; | |
890 | } | |
891 | ||
892 | /* | |
893 | * Subencoding implementations. | |
894 | */ | |
aa7d73fd | 895 | static void tight_pack24(VncState *vs, uint8_t *buf, size_t count, size_t *ret) |
380282b0 | 896 | { |
380282b0 CC |
897 | uint32_t *buf32; |
898 | uint32_t pix; | |
899 | int rshift, gshift, bshift; | |
900 | ||
380282b0 CC |
901 | buf32 = (uint32_t *)buf; |
902 | ||
903 | if ((vs->clientds.flags & QEMU_BIG_ENDIAN_FLAG) == | |
904 | (vs->ds->surface->flags & QEMU_BIG_ENDIAN_FLAG)) { | |
905 | rshift = vs->clientds.pf.rshift; | |
906 | gshift = vs->clientds.pf.gshift; | |
907 | bshift = vs->clientds.pf.bshift; | |
908 | } else { | |
909 | rshift = 24 - vs->clientds.pf.rshift; | |
910 | gshift = 24 - vs->clientds.pf.gshift; | |
911 | bshift = 24 - vs->clientds.pf.bshift; | |
912 | } | |
913 | ||
aa7d73fd CC |
914 | if (ret) { |
915 | *ret = count * 3; | |
916 | } | |
380282b0 CC |
917 | |
918 | while (count--) { | |
919 | pix = *buf32++; | |
920 | *buf++ = (char)(pix >> rshift); | |
921 | *buf++ = (char)(pix >> gshift); | |
922 | *buf++ = (char)(pix >> bshift); | |
923 | } | |
924 | } | |
925 | ||
efe556ad | 926 | static int send_full_color_rect(VncState *vs, int x, int y, int w, int h) |
380282b0 CC |
927 | { |
928 | int stream = 0; | |
2116eff9 | 929 | ssize_t bytes; |
380282b0 | 930 | |
efe556ad CC |
931 | #ifdef CONFIG_VNC_PNG |
932 | if (tight_can_send_png_rect(vs, w, h)) { | |
933 | return send_png_rect(vs, x, y, w, h, NULL); | |
934 | } | |
935 | #endif | |
936 | ||
380282b0 CC |
937 | vnc_write_u8(vs, stream << 4); /* no flushing, no filter */ |
938 | ||
d1af0e05 CC |
939 | if (vs->tight.pixel24) { |
940 | tight_pack24(vs, vs->tight.tight.buffer, w * h, &vs->tight.tight.offset); | |
380282b0 CC |
941 | bytes = 3; |
942 | } else { | |
943 | bytes = vs->clientds.pf.bytes_per_pixel; | |
944 | } | |
945 | ||
946 | bytes = tight_compress_data(vs, stream, w * h * bytes, | |
d1af0e05 | 947 | tight_conf[vs->tight.compression].raw_zlib_level, |
380282b0 CC |
948 | Z_DEFAULT_STRATEGY); |
949 | ||
950 | return (bytes >= 0); | |
951 | } | |
952 | ||
b4bea3f2 CC |
953 | static int send_solid_rect(VncState *vs) |
954 | { | |
955 | size_t bytes; | |
956 | ||
957 | vnc_write_u8(vs, VNC_TIGHT_FILL << 4); /* no flushing, no filter */ | |
958 | ||
d1af0e05 CC |
959 | if (vs->tight.pixel24) { |
960 | tight_pack24(vs, vs->tight.tight.buffer, 1, &vs->tight.tight.offset); | |
b4bea3f2 CC |
961 | bytes = 3; |
962 | } else { | |
963 | bytes = vs->clientds.pf.bytes_per_pixel; | |
964 | } | |
965 | ||
d1af0e05 | 966 | vnc_write(vs, vs->tight.tight.buffer, bytes); |
b4bea3f2 CC |
967 | return 1; |
968 | } | |
969 | ||
efe556ad CC |
970 | static int send_mono_rect(VncState *vs, int x, int y, |
971 | int w, int h, uint32_t bg, uint32_t fg) | |
aa7d73fd | 972 | { |
2116eff9 | 973 | ssize_t bytes; |
aa7d73fd | 974 | int stream = 1; |
d1af0e05 | 975 | int level = tight_conf[vs->tight.compression].mono_zlib_level; |
aa7d73fd | 976 | |
efe556ad CC |
977 | #ifdef CONFIG_VNC_PNG |
978 | if (tight_can_send_png_rect(vs, w, h)) { | |
979 | int ret; | |
efe556ad | 980 | int bpp = vs->clientds.pf.bytes_per_pixel * 8; |
5136a052 | 981 | VncPalette *palette = palette_new(2, bpp); |
efe556ad | 982 | |
5136a052 CC |
983 | palette_put(palette, bg); |
984 | palette_put(palette, fg); | |
efe556ad | 985 | ret = send_png_rect(vs, x, y, w, h, palette); |
5136a052 | 986 | palette_destroy(palette); |
efe556ad CC |
987 | return ret; |
988 | } | |
989 | #endif | |
990 | ||
aa7d73fd CC |
991 | bytes = ((w + 7) / 8) * h; |
992 | ||
993 | vnc_write_u8(vs, (stream | VNC_TIGHT_EXPLICIT_FILTER) << 4); | |
994 | vnc_write_u8(vs, VNC_TIGHT_FILTER_PALETTE); | |
995 | vnc_write_u8(vs, 1); | |
996 | ||
997 | switch(vs->clientds.pf.bytes_per_pixel) { | |
998 | case 4: | |
999 | { | |
1000 | uint32_t buf[2] = {bg, fg}; | |
1001 | size_t ret = sizeof (buf); | |
1002 | ||
d1af0e05 | 1003 | if (vs->tight.pixel24) { |
aa7d73fd CC |
1004 | tight_pack24(vs, (unsigned char*)buf, 2, &ret); |
1005 | } | |
1006 | vnc_write(vs, buf, ret); | |
1007 | ||
d1af0e05 | 1008 | tight_encode_mono_rect32(vs->tight.tight.buffer, w, h, bg, fg); |
aa7d73fd CC |
1009 | break; |
1010 | } | |
1011 | case 2: | |
1012 | vnc_write(vs, &bg, 2); | |
1013 | vnc_write(vs, &fg, 2); | |
d1af0e05 | 1014 | tight_encode_mono_rect16(vs->tight.tight.buffer, w, h, bg, fg); |
aa7d73fd CC |
1015 | break; |
1016 | default: | |
1017 | vnc_write_u8(vs, bg); | |
1018 | vnc_write_u8(vs, fg); | |
d1af0e05 | 1019 | tight_encode_mono_rect8(vs->tight.tight.buffer, w, h, bg, fg); |
aa7d73fd CC |
1020 | break; |
1021 | } | |
d1af0e05 | 1022 | vs->tight.tight.offset = bytes; |
aa7d73fd CC |
1023 | |
1024 | bytes = tight_compress_data(vs, stream, bytes, level, Z_DEFAULT_STRATEGY); | |
1025 | return (bytes >= 0); | |
1026 | } | |
1027 | ||
1028 | struct palette_cb_priv { | |
1029 | VncState *vs; | |
1030 | uint8_t *header; | |
efe556ad CC |
1031 | #ifdef CONFIG_VNC_PNG |
1032 | png_colorp png_palette; | |
1033 | #endif | |
aa7d73fd CC |
1034 | }; |
1035 | ||
5136a052 | 1036 | static void write_palette(int idx, uint32_t color, void *opaque) |
aa7d73fd CC |
1037 | { |
1038 | struct palette_cb_priv *priv = opaque; | |
1039 | VncState *vs = priv->vs; | |
1040 | uint32_t bytes = vs->clientds.pf.bytes_per_pixel; | |
aa7d73fd CC |
1041 | |
1042 | if (bytes == 4) { | |
aa7d73fd CC |
1043 | ((uint32_t*)priv->header)[idx] = color; |
1044 | } else { | |
aa7d73fd CC |
1045 | ((uint16_t*)priv->header)[idx] = color; |
1046 | } | |
1047 | } | |
1048 | ||
efe556ad | 1049 | static bool send_gradient_rect(VncState *vs, int x, int y, int w, int h) |
2f6f5c7a CC |
1050 | { |
1051 | int stream = 3; | |
d1af0e05 | 1052 | int level = tight_conf[vs->tight.compression].gradient_zlib_level; |
2116eff9 | 1053 | ssize_t bytes; |
2f6f5c7a CC |
1054 | |
1055 | if (vs->clientds.pf.bytes_per_pixel == 1) | |
efe556ad | 1056 | return send_full_color_rect(vs, x, y, w, h); |
2f6f5c7a CC |
1057 | |
1058 | vnc_write_u8(vs, (stream | VNC_TIGHT_EXPLICIT_FILTER) << 4); | |
1059 | vnc_write_u8(vs, VNC_TIGHT_FILTER_GRADIENT); | |
1060 | ||
d1af0e05 | 1061 | buffer_reserve(&vs->tight.gradient, w * 3 * sizeof (int)); |
2f6f5c7a | 1062 | |
d1af0e05 CC |
1063 | if (vs->tight.pixel24) { |
1064 | tight_filter_gradient24(vs, vs->tight.tight.buffer, w, h); | |
2f6f5c7a CC |
1065 | bytes = 3; |
1066 | } else if (vs->clientds.pf.bytes_per_pixel == 4) { | |
d1af0e05 | 1067 | tight_filter_gradient32(vs, (uint32_t *)vs->tight.tight.buffer, w, h); |
2f6f5c7a CC |
1068 | bytes = 4; |
1069 | } else { | |
d1af0e05 | 1070 | tight_filter_gradient16(vs, (uint16_t *)vs->tight.tight.buffer, w, h); |
2f6f5c7a CC |
1071 | bytes = 2; |
1072 | } | |
1073 | ||
d1af0e05 | 1074 | buffer_reset(&vs->tight.gradient); |
2f6f5c7a CC |
1075 | |
1076 | bytes = w * h * bytes; | |
d1af0e05 | 1077 | vs->tight.tight.offset = bytes; |
2f6f5c7a CC |
1078 | |
1079 | bytes = tight_compress_data(vs, stream, bytes, | |
1080 | level, Z_FILTERED); | |
1081 | return (bytes >= 0); | |
1082 | } | |
1083 | ||
efe556ad | 1084 | static int send_palette_rect(VncState *vs, int x, int y, |
5136a052 | 1085 | int w, int h, VncPalette *palette) |
aa7d73fd CC |
1086 | { |
1087 | int stream = 2; | |
d1af0e05 | 1088 | int level = tight_conf[vs->tight.compression].idx_zlib_level; |
aa7d73fd | 1089 | int colors; |
2116eff9 | 1090 | ssize_t bytes; |
aa7d73fd | 1091 | |
efe556ad CC |
1092 | #ifdef CONFIG_VNC_PNG |
1093 | if (tight_can_send_png_rect(vs, w, h)) { | |
1094 | return send_png_rect(vs, x, y, w, h, palette); | |
1095 | } | |
1096 | #endif | |
1097 | ||
5136a052 | 1098 | colors = palette_size(palette); |
aa7d73fd CC |
1099 | |
1100 | vnc_write_u8(vs, (stream | VNC_TIGHT_EXPLICIT_FILTER) << 4); | |
1101 | vnc_write_u8(vs, VNC_TIGHT_FILTER_PALETTE); | |
1102 | vnc_write_u8(vs, colors - 1); | |
1103 | ||
1104 | switch(vs->clientds.pf.bytes_per_pixel) { | |
1105 | case 4: | |
1106 | { | |
1107 | size_t old_offset, offset; | |
5136a052 | 1108 | uint32_t header[palette_size(palette)]; |
aa7d73fd CC |
1109 | struct palette_cb_priv priv = { vs, (uint8_t *)header }; |
1110 | ||
1111 | old_offset = vs->output.offset; | |
5136a052 | 1112 | palette_iter(palette, write_palette, &priv); |
aa7d73fd CC |
1113 | vnc_write(vs, header, sizeof(header)); |
1114 | ||
d1af0e05 | 1115 | if (vs->tight.pixel24) { |
aa7d73fd CC |
1116 | tight_pack24(vs, vs->output.buffer + old_offset, colors, &offset); |
1117 | vs->output.offset = old_offset + offset; | |
1118 | } | |
1119 | ||
d1af0e05 | 1120 | tight_encode_indexed_rect32(vs->tight.tight.buffer, w * h, palette); |
aa7d73fd CC |
1121 | break; |
1122 | } | |
1123 | case 2: | |
1124 | { | |
5136a052 | 1125 | uint16_t header[palette_size(palette)]; |
aa7d73fd CC |
1126 | struct palette_cb_priv priv = { vs, (uint8_t *)header }; |
1127 | ||
5136a052 | 1128 | palette_iter(palette, write_palette, &priv); |
aa7d73fd | 1129 | vnc_write(vs, header, sizeof(header)); |
d1af0e05 | 1130 | tight_encode_indexed_rect16(vs->tight.tight.buffer, w * h, palette); |
aa7d73fd CC |
1131 | break; |
1132 | } | |
1133 | default: | |
1134 | return -1; /* No palette for 8bits colors */ | |
1135 | break; | |
1136 | } | |
1137 | bytes = w * h; | |
d1af0e05 | 1138 | vs->tight.tight.offset = bytes; |
aa7d73fd CC |
1139 | |
1140 | bytes = tight_compress_data(vs, stream, bytes, | |
1141 | level, Z_DEFAULT_STRATEGY); | |
1142 | return (bytes >= 0); | |
1143 | } | |
1144 | ||
efe556ad CC |
1145 | #if defined(CONFIG_VNC_JPEG) || defined(CONFIG_VNC_PNG) |
1146 | static void rgb_prepare_row24(VncState *vs, uint8_t *dst, int x, int y, | |
1147 | int count) | |
2f6f5c7a CC |
1148 | { |
1149 | VncDisplay *vd = vs->vd; | |
1150 | uint32_t *fbptr; | |
1151 | uint32_t pix; | |
1152 | ||
1153 | fbptr = (uint32_t *)(vd->server->data + y * ds_get_linesize(vs->ds) + | |
1154 | x * ds_get_bytes_per_pixel(vs->ds)); | |
1155 | ||
1156 | while (count--) { | |
1157 | pix = *fbptr++; | |
1158 | *dst++ = (uint8_t)(pix >> vs->ds->surface->pf.rshift); | |
1159 | *dst++ = (uint8_t)(pix >> vs->ds->surface->pf.gshift); | |
1160 | *dst++ = (uint8_t)(pix >> vs->ds->surface->pf.bshift); | |
1161 | } | |
1162 | } | |
1163 | ||
efe556ad | 1164 | #define DEFINE_RGB_GET_ROW_FUNCTION(bpp) \ |
2f6f5c7a CC |
1165 | \ |
1166 | static void \ | |
efe556ad CC |
1167 | rgb_prepare_row##bpp(VncState *vs, uint8_t *dst, \ |
1168 | int x, int y, int count) \ | |
2f6f5c7a CC |
1169 | { \ |
1170 | VncDisplay *vd = vs->vd; \ | |
1171 | uint##bpp##_t *fbptr; \ | |
1172 | uint##bpp##_t pix; \ | |
1173 | int r, g, b; \ | |
1174 | \ | |
1175 | fbptr = (uint##bpp##_t *) \ | |
1176 | (vd->server->data + y * ds_get_linesize(vs->ds) + \ | |
1177 | x * ds_get_bytes_per_pixel(vs->ds)); \ | |
1178 | \ | |
1179 | while (count--) { \ | |
1180 | pix = *fbptr++; \ | |
1181 | \ | |
1182 | r = (int)((pix >> vs->ds->surface->pf.rshift) \ | |
1183 | & vs->ds->surface->pf.rmax); \ | |
1184 | g = (int)((pix >> vs->ds->surface->pf.gshift) \ | |
1185 | & vs->ds->surface->pf.gmax); \ | |
1186 | b = (int)((pix >> vs->ds->surface->pf.bshift) \ | |
1187 | & vs->ds->surface->pf.bmax); \ | |
1188 | \ | |
1189 | *dst++ = (uint8_t)((r * 255 + vs->ds->surface->pf.rmax / 2) \ | |
1190 | / vs->ds->surface->pf.rmax); \ | |
1191 | *dst++ = (uint8_t)((g * 255 + vs->ds->surface->pf.gmax / 2) \ | |
1192 | / vs->ds->surface->pf.gmax); \ | |
1193 | *dst++ = (uint8_t)((b * 255 + vs->ds->surface->pf.bmax / 2) \ | |
1194 | / vs->ds->surface->pf.bmax); \ | |
1195 | } \ | |
1196 | } | |
1197 | ||
efe556ad CC |
1198 | DEFINE_RGB_GET_ROW_FUNCTION(16) |
1199 | DEFINE_RGB_GET_ROW_FUNCTION(32) | |
2f6f5c7a | 1200 | |
efe556ad CC |
1201 | static void rgb_prepare_row(VncState *vs, uint8_t *dst, int x, int y, |
1202 | int count) | |
2f6f5c7a | 1203 | { |
4043a013 CC |
1204 | if (ds_get_bytes_per_pixel(vs->ds) == 4) { |
1205 | if (vs->ds->surface->pf.rmax == 0xFF && | |
1206 | vs->ds->surface->pf.gmax == 0xFF && | |
1207 | vs->ds->surface->pf.bmax == 0xFF) { | |
1208 | rgb_prepare_row24(vs, dst, x, y, count); | |
1209 | } else { | |
1210 | rgb_prepare_row32(vs, dst, x, y, count); | |
1211 | } | |
1212 | } else { | |
efe556ad | 1213 | rgb_prepare_row16(vs, dst, x, y, count); |
4043a013 | 1214 | } |
2f6f5c7a | 1215 | } |
efe556ad | 1216 | #endif /* CONFIG_VNC_JPEG or CONFIG_VNC_PNG */ |
2f6f5c7a | 1217 | |
efe556ad CC |
1218 | /* |
1219 | * JPEG compression stuff. | |
1220 | */ | |
1221 | #ifdef CONFIG_VNC_JPEG | |
2f6f5c7a CC |
1222 | /* |
1223 | * Destination manager implementation for JPEG library. | |
1224 | */ | |
1225 | ||
1226 | /* This is called once per encoding */ | |
1227 | static void jpeg_init_destination(j_compress_ptr cinfo) | |
1228 | { | |
1229 | VncState *vs = cinfo->client_data; | |
d1af0e05 | 1230 | Buffer *buffer = &vs->tight.jpeg; |
2f6f5c7a CC |
1231 | |
1232 | cinfo->dest->next_output_byte = (JOCTET *)buffer->buffer + buffer->offset; | |
1233 | cinfo->dest->free_in_buffer = (size_t)(buffer->capacity - buffer->offset); | |
1234 | } | |
1235 | ||
1236 | /* This is called when we ran out of buffer (shouldn't happen!) */ | |
1237 | static boolean jpeg_empty_output_buffer(j_compress_ptr cinfo) | |
1238 | { | |
1239 | VncState *vs = cinfo->client_data; | |
d1af0e05 | 1240 | Buffer *buffer = &vs->tight.jpeg; |
2f6f5c7a CC |
1241 | |
1242 | buffer->offset = buffer->capacity; | |
1243 | buffer_reserve(buffer, 2048); | |
1244 | jpeg_init_destination(cinfo); | |
1245 | return TRUE; | |
1246 | } | |
1247 | ||
1248 | /* This is called when we are done processing data */ | |
1249 | static void jpeg_term_destination(j_compress_ptr cinfo) | |
1250 | { | |
1251 | VncState *vs = cinfo->client_data; | |
d1af0e05 | 1252 | Buffer *buffer = &vs->tight.jpeg; |
2f6f5c7a CC |
1253 | |
1254 | buffer->offset = buffer->capacity - cinfo->dest->free_in_buffer; | |
1255 | } | |
1256 | ||
1257 | static int send_jpeg_rect(VncState *vs, int x, int y, int w, int h, int quality) | |
1258 | { | |
1259 | struct jpeg_compress_struct cinfo; | |
1260 | struct jpeg_error_mgr jerr; | |
1261 | struct jpeg_destination_mgr manager; | |
1262 | JSAMPROW row[1]; | |
1263 | uint8_t *buf; | |
1264 | int dy; | |
1265 | ||
1266 | if (ds_get_bytes_per_pixel(vs->ds) == 1) | |
efe556ad | 1267 | return send_full_color_rect(vs, x, y, w, h); |
2f6f5c7a | 1268 | |
d1af0e05 | 1269 | buffer_reserve(&vs->tight.jpeg, 2048); |
2f6f5c7a CC |
1270 | |
1271 | cinfo.err = jpeg_std_error(&jerr); | |
1272 | jpeg_create_compress(&cinfo); | |
1273 | ||
1274 | cinfo.client_data = vs; | |
1275 | cinfo.image_width = w; | |
1276 | cinfo.image_height = h; | |
1277 | cinfo.input_components = 3; | |
1278 | cinfo.in_color_space = JCS_RGB; | |
1279 | ||
1280 | jpeg_set_defaults(&cinfo); | |
1281 | jpeg_set_quality(&cinfo, quality, true); | |
1282 | ||
1283 | manager.init_destination = jpeg_init_destination; | |
1284 | manager.empty_output_buffer = jpeg_empty_output_buffer; | |
1285 | manager.term_destination = jpeg_term_destination; | |
1286 | cinfo.dest = &manager; | |
1287 | ||
1288 | jpeg_start_compress(&cinfo, true); | |
1289 | ||
d9c18c24 CC |
1290 | buf = qemu_malloc(w * 3); |
1291 | row[0] = buf; | |
2f6f5c7a | 1292 | for (dy = 0; dy < h; dy++) { |
efe556ad | 1293 | rgb_prepare_row(vs, buf, x, y + dy, w); |
2f6f5c7a CC |
1294 | jpeg_write_scanlines(&cinfo, row, 1); |
1295 | } | |
d9c18c24 | 1296 | qemu_free(buf); |
2f6f5c7a CC |
1297 | |
1298 | jpeg_finish_compress(&cinfo); | |
1299 | jpeg_destroy_compress(&cinfo); | |
1300 | ||
1301 | vnc_write_u8(vs, VNC_TIGHT_JPEG << 4); | |
1302 | ||
d1af0e05 CC |
1303 | tight_send_compact_size(vs, vs->tight.jpeg.offset); |
1304 | vnc_write(vs, vs->tight.jpeg.buffer, vs->tight.jpeg.offset); | |
1305 | buffer_reset(&vs->tight.jpeg); | |
2f6f5c7a CC |
1306 | |
1307 | return 1; | |
1308 | } | |
1309 | #endif /* CONFIG_VNC_JPEG */ | |
1310 | ||
efe556ad CC |
1311 | /* |
1312 | * PNG compression stuff. | |
1313 | */ | |
1314 | #ifdef CONFIG_VNC_PNG | |
5136a052 | 1315 | static void write_png_palette(int idx, uint32_t pix, void *opaque) |
efe556ad CC |
1316 | { |
1317 | struct palette_cb_priv *priv = opaque; | |
1318 | VncState *vs = priv->vs; | |
efe556ad | 1319 | png_colorp color = &priv->png_palette[idx]; |
efe556ad | 1320 | |
d1af0e05 | 1321 | if (vs->tight.pixel24) |
efe556ad CC |
1322 | { |
1323 | color->red = (pix >> vs->clientds.pf.rshift) & vs->clientds.pf.rmax; | |
1324 | color->green = (pix >> vs->clientds.pf.gshift) & vs->clientds.pf.gmax; | |
1325 | color->blue = (pix >> vs->clientds.pf.bshift) & vs->clientds.pf.bmax; | |
1326 | } | |
1327 | else | |
1328 | { | |
1329 | int red, green, blue; | |
1330 | ||
1331 | red = (pix >> vs->clientds.pf.rshift) & vs->clientds.pf.rmax; | |
1332 | green = (pix >> vs->clientds.pf.gshift) & vs->clientds.pf.gmax; | |
1333 | blue = (pix >> vs->clientds.pf.bshift) & vs->clientds.pf.bmax; | |
1334 | color->red = ((red * 255 + vs->clientds.pf.rmax / 2) / | |
1335 | vs->clientds.pf.rmax); | |
1336 | color->green = ((green * 255 + vs->clientds.pf.gmax / 2) / | |
1337 | vs->clientds.pf.gmax); | |
1338 | color->blue = ((blue * 255 + vs->clientds.pf.bmax / 2) / | |
1339 | vs->clientds.pf.bmax); | |
1340 | } | |
1341 | } | |
1342 | ||
1343 | static void png_write_data(png_structp png_ptr, png_bytep data, | |
1344 | png_size_t length) | |
1345 | { | |
1346 | VncState *vs = png_get_io_ptr(png_ptr); | |
1347 | ||
d1af0e05 CC |
1348 | buffer_reserve(&vs->tight.png, vs->tight.png.offset + length); |
1349 | memcpy(vs->tight.png.buffer + vs->tight.png.offset, data, length); | |
efe556ad | 1350 | |
d1af0e05 | 1351 | vs->tight.png.offset += length; |
efe556ad CC |
1352 | } |
1353 | ||
1354 | static void png_flush_data(png_structp png_ptr) | |
1355 | { | |
1356 | } | |
1357 | ||
1358 | static void *vnc_png_malloc(png_structp png_ptr, png_size_t size) | |
1359 | { | |
1360 | return qemu_malloc(size); | |
1361 | } | |
1362 | ||
1363 | static void vnc_png_free(png_structp png_ptr, png_voidp ptr) | |
1364 | { | |
1365 | qemu_free(ptr); | |
1366 | } | |
1367 | ||
1368 | static int send_png_rect(VncState *vs, int x, int y, int w, int h, | |
5136a052 | 1369 | VncPalette *palette) |
efe556ad CC |
1370 | { |
1371 | png_byte color_type; | |
1372 | png_structp png_ptr; | |
1373 | png_infop info_ptr; | |
1374 | png_colorp png_palette = NULL; | |
d1af0e05 CC |
1375 | int level = tight_png_conf[vs->tight.compression].png_zlib_level; |
1376 | int filters = tight_png_conf[vs->tight.compression].png_filters; | |
efe556ad CC |
1377 | uint8_t *buf; |
1378 | int dy; | |
1379 | ||
1380 | png_ptr = png_create_write_struct_2(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL, | |
1381 | NULL, vnc_png_malloc, vnc_png_free); | |
1382 | ||
1383 | if (png_ptr == NULL) | |
1384 | return -1; | |
1385 | ||
1386 | info_ptr = png_create_info_struct(png_ptr); | |
1387 | ||
1388 | if (info_ptr == NULL) { | |
1389 | png_destroy_write_struct(&png_ptr, NULL); | |
1390 | return -1; | |
1391 | } | |
1392 | ||
1393 | png_set_write_fn(png_ptr, (void *) vs, png_write_data, png_flush_data); | |
1394 | png_set_compression_level(png_ptr, level); | |
3941bf6f | 1395 | png_set_filter(png_ptr, PNG_FILTER_TYPE_DEFAULT, filters); |
efe556ad CC |
1396 | |
1397 | if (palette) { | |
1398 | color_type = PNG_COLOR_TYPE_PALETTE; | |
1399 | } else { | |
1400 | color_type = PNG_COLOR_TYPE_RGB; | |
1401 | } | |
1402 | ||
1403 | png_set_IHDR(png_ptr, info_ptr, w, h, | |
1404 | 8, color_type, PNG_INTERLACE_NONE, | |
1405 | PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT); | |
1406 | ||
1407 | if (color_type == PNG_COLOR_TYPE_PALETTE) { | |
1408 | struct palette_cb_priv priv; | |
1409 | ||
1410 | png_palette = png_malloc(png_ptr, sizeof(*png_palette) * | |
5136a052 | 1411 | palette_size(palette)); |
efe556ad CC |
1412 | |
1413 | priv.vs = vs; | |
1414 | priv.png_palette = png_palette; | |
5136a052 | 1415 | palette_iter(palette, write_png_palette, &priv); |
efe556ad | 1416 | |
5136a052 | 1417 | png_set_PLTE(png_ptr, info_ptr, png_palette, palette_size(palette)); |
efe556ad | 1418 | |
efe556ad | 1419 | if (vs->clientds.pf.bytes_per_pixel == 4) { |
d1af0e05 | 1420 | tight_encode_indexed_rect32(vs->tight.tight.buffer, w * h, palette); |
efe556ad | 1421 | } else { |
d1af0e05 | 1422 | tight_encode_indexed_rect16(vs->tight.tight.buffer, w * h, palette); |
efe556ad CC |
1423 | } |
1424 | } | |
1425 | ||
1426 | png_write_info(png_ptr, info_ptr); | |
1427 | ||
d1af0e05 | 1428 | buffer_reserve(&vs->tight.png, 2048); |
efe556ad CC |
1429 | buf = qemu_malloc(w * 3); |
1430 | for (dy = 0; dy < h; dy++) | |
1431 | { | |
1432 | if (color_type == PNG_COLOR_TYPE_PALETTE) { | |
d1af0e05 | 1433 | memcpy(buf, vs->tight.tight.buffer + (dy * w), w); |
efe556ad CC |
1434 | } else { |
1435 | rgb_prepare_row(vs, buf, x, y + dy, w); | |
1436 | } | |
1437 | png_write_row(png_ptr, buf); | |
1438 | } | |
1439 | qemu_free(buf); | |
1440 | ||
1441 | png_write_end(png_ptr, NULL); | |
1442 | ||
1443 | if (color_type == PNG_COLOR_TYPE_PALETTE) { | |
1444 | png_free(png_ptr, png_palette); | |
1445 | } | |
1446 | ||
1447 | png_destroy_write_struct(&png_ptr, &info_ptr); | |
1448 | ||
1449 | vnc_write_u8(vs, VNC_TIGHT_PNG << 4); | |
1450 | ||
d1af0e05 CC |
1451 | tight_send_compact_size(vs, vs->tight.png.offset); |
1452 | vnc_write(vs, vs->tight.png.buffer, vs->tight.png.offset); | |
1453 | buffer_reset(&vs->tight.png); | |
efe556ad CC |
1454 | return 1; |
1455 | } | |
1456 | #endif /* CONFIG_VNC_PNG */ | |
1457 | ||
380282b0 CC |
1458 | static void vnc_tight_start(VncState *vs) |
1459 | { | |
d1af0e05 | 1460 | buffer_reset(&vs->tight.tight); |
380282b0 CC |
1461 | |
1462 | // make the output buffer be the zlib buffer, so we can compress it later | |
d1af0e05 CC |
1463 | vs->tight.tmp = vs->output; |
1464 | vs->output = vs->tight.tight; | |
380282b0 CC |
1465 | } |
1466 | ||
1467 | static void vnc_tight_stop(VncState *vs) | |
1468 | { | |
1469 | // switch back to normal output/zlib buffers | |
d1af0e05 CC |
1470 | vs->tight.tight = vs->output; |
1471 | vs->output = vs->tight.tmp; | |
380282b0 CC |
1472 | } |
1473 | ||
03817eb8 CC |
1474 | static int send_sub_rect_nojpeg(VncState *vs, int x, int y, int w, int h, |
1475 | int bg, int fg, int colors, VncPalette *palette) | |
380282b0 | 1476 | { |
03817eb8 | 1477 | int ret; |
380282b0 | 1478 | |
03817eb8 CC |
1479 | if (colors == 0) { |
1480 | if (tight_detect_smooth_image(vs, w, h)) { | |
1481 | ret = send_gradient_rect(vs, x, y, w, h); | |
1482 | } else { | |
1483 | ret = send_full_color_rect(vs, x, y, w, h); | |
1484 | } | |
1485 | } else if (colors == 1) { | |
1486 | ret = send_solid_rect(vs); | |
1487 | } else if (colors == 2) { | |
1488 | ret = send_mono_rect(vs, x, y, w, h, bg, fg); | |
1489 | } else if (colors <= 256) { | |
1490 | ret = send_palette_rect(vs, x, y, w, h, palette); | |
d167f9bc BS |
1491 | } else { |
1492 | ret = 0; | |
03817eb8 CC |
1493 | } |
1494 | return ret; | |
1495 | } | |
380282b0 | 1496 | |
03817eb8 CC |
1497 | #ifdef CONFIG_VNC_JPEG |
1498 | static int send_sub_rect_jpeg(VncState *vs, int x, int y, int w, int h, | |
1499 | int bg, int fg, int colors, | |
ce702e93 | 1500 | VncPalette *palette, bool force) |
03817eb8 CC |
1501 | { |
1502 | int ret; | |
aa7d73fd CC |
1503 | |
1504 | if (colors == 0) { | |
ce702e93 CC |
1505 | if (force || (tight_jpeg_conf[vs->tight.quality].jpeg_full && |
1506 | tight_detect_smooth_image(vs, w, h))) { | |
03817eb8 | 1507 | int quality = tight_conf[vs->tight.quality].jpeg_quality; |
2f6f5c7a | 1508 | |
03817eb8 | 1509 | ret = send_jpeg_rect(vs, x, y, w, h, quality); |
2f6f5c7a | 1510 | } else { |
efe556ad | 1511 | ret = send_full_color_rect(vs, x, y, w, h); |
2f6f5c7a | 1512 | } |
aa7d73fd CC |
1513 | } else if (colors == 1) { |
1514 | ret = send_solid_rect(vs); | |
1515 | } else if (colors == 2) { | |
efe556ad | 1516 | ret = send_mono_rect(vs, x, y, w, h, bg, fg); |
aa7d73fd | 1517 | } else if (colors <= 256) { |
ce702e93 CC |
1518 | if (force || (colors > 96 && |
1519 | tight_jpeg_conf[vs->tight.quality].jpeg_idx && | |
1520 | tight_detect_smooth_image(vs, w, h))) { | |
d1af0e05 | 1521 | int quality = tight_conf[vs->tight.quality].jpeg_quality; |
2f6f5c7a CC |
1522 | |
1523 | ret = send_jpeg_rect(vs, x, y, w, h, quality); | |
1524 | } else { | |
efe556ad | 1525 | ret = send_palette_rect(vs, x, y, w, h, palette); |
2f6f5c7a | 1526 | } |
ad7ee4ad BS |
1527 | } else { |
1528 | ret = 0; | |
03817eb8 CC |
1529 | } |
1530 | return ret; | |
1531 | } | |
2f6f5c7a | 1532 | #endif |
03817eb8 CC |
1533 | |
1534 | static int send_sub_rect(VncState *vs, int x, int y, int w, int h) | |
1535 | { | |
1536 | VncPalette *palette = NULL; | |
1537 | uint32_t bg = 0, fg = 0; | |
1538 | int colors; | |
1539 | int ret = 0; | |
cf76a1ce | 1540 | #ifdef CONFIG_VNC_JPEG |
ce702e93 CC |
1541 | bool force_jpeg = false; |
1542 | bool allow_jpeg = true; | |
cf76a1ce | 1543 | #endif |
03817eb8 CC |
1544 | |
1545 | vnc_framebuffer_update(vs, x, y, w, h, vs->tight.type); | |
1546 | ||
1547 | vnc_tight_start(vs); | |
1548 | vnc_raw_send_framebuffer_update(vs, x, y, w, h); | |
1549 | vnc_tight_stop(vs); | |
1550 | ||
ce702e93 | 1551 | #ifdef CONFIG_VNC_JPEG |
80e0c8c3 | 1552 | if (!vs->vd->non_adaptive && vs->tight.quality != (uint8_t)-1) { |
ce702e93 CC |
1553 | double freq = vnc_update_freq(vs, x, y, w, h); |
1554 | ||
1555 | if (freq < tight_jpeg_conf[vs->tight.quality].jpeg_freq_min) { | |
1556 | allow_jpeg = false; | |
1557 | } | |
1558 | if (freq >= tight_jpeg_conf[vs->tight.quality].jpeg_freq_threshold) { | |
1559 | force_jpeg = true; | |
1560 | vnc_sent_lossy_rect(vs, x, y, w, h); | |
1561 | } | |
1562 | } | |
1563 | #endif | |
1564 | ||
03817eb8 CC |
1565 | colors = tight_fill_palette(vs, x, y, w * h, &fg, &bg, &palette); |
1566 | ||
1567 | #ifdef CONFIG_VNC_JPEG | |
ce702e93 CC |
1568 | if (allow_jpeg && vs->tight.quality != (uint8_t)-1) { |
1569 | ret = send_sub_rect_jpeg(vs, x, y, w, h, bg, fg, colors, palette, | |
1570 | force_jpeg); | |
03817eb8 CC |
1571 | } else { |
1572 | ret = send_sub_rect_nojpeg(vs, x, y, w, h, bg, fg, colors, palette); | |
aa7d73fd | 1573 | } |
03817eb8 CC |
1574 | #else |
1575 | ret = send_sub_rect_nojpeg(vs, x, y, w, h, bg, fg, colors, palette); | |
1576 | #endif | |
1577 | ||
5136a052 | 1578 | palette_destroy(palette); |
aa7d73fd | 1579 | return ret; |
380282b0 CC |
1580 | } |
1581 | ||
b4bea3f2 CC |
1582 | static int send_sub_rect_solid(VncState *vs, int x, int y, int w, int h) |
1583 | { | |
d1af0e05 | 1584 | vnc_framebuffer_update(vs, x, y, w, h, vs->tight.type); |
b4bea3f2 CC |
1585 | |
1586 | vnc_tight_start(vs); | |
1587 | vnc_raw_send_framebuffer_update(vs, x, y, w, h); | |
1588 | vnc_tight_stop(vs); | |
1589 | ||
1590 | return send_solid_rect(vs); | |
1591 | } | |
1592 | ||
ce702e93 CC |
1593 | static int send_rect_simple(VncState *vs, int x, int y, int w, int h, |
1594 | bool split) | |
380282b0 CC |
1595 | { |
1596 | int max_size, max_width; | |
1597 | int max_sub_width, max_sub_height; | |
1598 | int dx, dy; | |
1599 | int rw, rh; | |
1600 | int n = 0; | |
1601 | ||
d1af0e05 CC |
1602 | max_size = tight_conf[vs->tight.compression].max_rect_size; |
1603 | max_width = tight_conf[vs->tight.compression].max_rect_width; | |
380282b0 | 1604 | |
ce702e93 | 1605 | if (split && (w > max_width || w * h > max_size)) { |
380282b0 CC |
1606 | max_sub_width = (w > max_width) ? max_width : w; |
1607 | max_sub_height = max_size / max_sub_width; | |
1608 | ||
1609 | for (dy = 0; dy < h; dy += max_sub_height) { | |
1610 | for (dx = 0; dx < w; dx += max_width) { | |
1611 | rw = MIN(max_sub_width, w - dx); | |
1612 | rh = MIN(max_sub_height, h - dy); | |
1613 | n += send_sub_rect(vs, x+dx, y+dy, rw, rh); | |
1614 | } | |
1615 | } | |
1616 | } else { | |
1617 | n += send_sub_rect(vs, x, y, w, h); | |
1618 | } | |
1619 | ||
1620 | return n; | |
1621 | } | |
1622 | ||
b4bea3f2 CC |
1623 | static int find_large_solid_color_rect(VncState *vs, int x, int y, |
1624 | int w, int h, int max_rows) | |
1625 | { | |
1626 | int dx, dy, dw, dh; | |
1627 | int n = 0; | |
1628 | ||
1629 | /* Try to find large solid-color areas and send them separately. */ | |
1630 | ||
1631 | for (dy = y; dy < y + h; dy += VNC_TIGHT_MAX_SPLIT_TILE_SIZE) { | |
1632 | ||
1633 | /* If a rectangle becomes too large, send its upper part now. */ | |
1634 | ||
1635 | if (dy - y >= max_rows) { | |
ce702e93 | 1636 | n += send_rect_simple(vs, x, y, w, max_rows, true); |
b4bea3f2 CC |
1637 | y += max_rows; |
1638 | h -= max_rows; | |
1639 | } | |
1640 | ||
1641 | dh = MIN(VNC_TIGHT_MAX_SPLIT_TILE_SIZE, (y + h - dy)); | |
1642 | ||
1643 | for (dx = x; dx < x + w; dx += VNC_TIGHT_MAX_SPLIT_TILE_SIZE) { | |
1644 | uint32_t color_value; | |
1645 | int x_best, y_best, w_best, h_best; | |
1646 | ||
1647 | dw = MIN(VNC_TIGHT_MAX_SPLIT_TILE_SIZE, (x + w - dx)); | |
1648 | ||
1649 | if (!check_solid_tile(vs, dx, dy, dw, dh, &color_value, false)) { | |
1650 | continue ; | |
1651 | } | |
1652 | ||
1653 | /* Get dimensions of solid-color area. */ | |
1654 | ||
1655 | find_best_solid_area(vs, dx, dy, w - (dx - x), h - (dy - y), | |
1656 | color_value, &w_best, &h_best); | |
1657 | ||
1658 | /* Make sure a solid rectangle is large enough | |
1659 | (or the whole rectangle is of the same color). */ | |
1660 | ||
1661 | if (w_best * h_best != w * h && | |
1662 | w_best * h_best < VNC_TIGHT_MIN_SOLID_SUBRECT_SIZE) { | |
1663 | continue; | |
1664 | } | |
1665 | ||
1666 | /* Try to extend solid rectangle to maximum size. */ | |
1667 | ||
1668 | x_best = dx; y_best = dy; | |
1669 | extend_solid_area(vs, x, y, w, h, color_value, | |
1670 | &x_best, &y_best, &w_best, &h_best); | |
1671 | ||
1672 | /* Send rectangles at top and left to solid-color area. */ | |
1673 | ||
1674 | if (y_best != y) { | |
ce702e93 | 1675 | n += send_rect_simple(vs, x, y, w, y_best-y, true); |
b4bea3f2 CC |
1676 | } |
1677 | if (x_best != x) { | |
efe556ad CC |
1678 | n += tight_send_framebuffer_update(vs, x, y_best, |
1679 | x_best-x, h_best); | |
b4bea3f2 CC |
1680 | } |
1681 | ||
1682 | /* Send solid-color rectangle. */ | |
1683 | n += send_sub_rect_solid(vs, x_best, y_best, w_best, h_best); | |
1684 | ||
1685 | /* Send remaining rectangles (at right and bottom). */ | |
1686 | ||
1687 | if (x_best + w_best != x + w) { | |
efe556ad CC |
1688 | n += tight_send_framebuffer_update(vs, x_best+w_best, |
1689 | y_best, | |
1690 | w-(x_best-x)-w_best, | |
1691 | h_best); | |
b4bea3f2 CC |
1692 | } |
1693 | if (y_best + h_best != y + h) { | |
efe556ad CC |
1694 | n += tight_send_framebuffer_update(vs, x, y_best+h_best, |
1695 | w, h-(y_best-y)-h_best); | |
b4bea3f2 CC |
1696 | } |
1697 | ||
1698 | /* Return after all recursive calls are done. */ | |
1699 | return n; | |
1700 | } | |
1701 | } | |
ce702e93 | 1702 | return n + send_rect_simple(vs, x, y, w, h, true); |
b4bea3f2 CC |
1703 | } |
1704 | ||
efe556ad CC |
1705 | static int tight_send_framebuffer_update(VncState *vs, int x, int y, |
1706 | int w, int h) | |
380282b0 | 1707 | { |
b4bea3f2 CC |
1708 | int max_rows; |
1709 | ||
380282b0 CC |
1710 | if (vs->clientds.pf.bytes_per_pixel == 4 && vs->clientds.pf.rmax == 0xFF && |
1711 | vs->clientds.pf.bmax == 0xFF && vs->clientds.pf.gmax == 0xFF) { | |
d1af0e05 | 1712 | vs->tight.pixel24 = true; |
380282b0 | 1713 | } else { |
d1af0e05 | 1714 | vs->tight.pixel24 = false; |
380282b0 CC |
1715 | } |
1716 | ||
cf76a1ce | 1717 | #ifdef CONFIG_VNC_JPEG |
368d2588 | 1718 | if (vs->tight.quality != (uint8_t)-1) { |
ce702e93 CC |
1719 | double freq = vnc_update_freq(vs, x, y, w, h); |
1720 | ||
1721 | if (freq > tight_jpeg_conf[vs->tight.quality].jpeg_freq_threshold) { | |
1722 | return send_rect_simple(vs, x, y, w, h, false); | |
1723 | } | |
1724 | } | |
cf76a1ce | 1725 | #endif |
ce702e93 CC |
1726 | |
1727 | if (w * h < VNC_TIGHT_MIN_SPLIT_RECT_SIZE) { | |
1728 | return send_rect_simple(vs, x, y, w, h, true); | |
1729 | } | |
b4bea3f2 CC |
1730 | |
1731 | /* Calculate maximum number of rows in one non-solid rectangle. */ | |
1732 | ||
d1af0e05 CC |
1733 | max_rows = tight_conf[vs->tight.compression].max_rect_size; |
1734 | max_rows /= MIN(tight_conf[vs->tight.compression].max_rect_width, w); | |
b4bea3f2 CC |
1735 | |
1736 | return find_large_solid_color_rect(vs, x, y, w, h, max_rows); | |
380282b0 CC |
1737 | } |
1738 | ||
efe556ad CC |
1739 | int vnc_tight_send_framebuffer_update(VncState *vs, int x, int y, |
1740 | int w, int h) | |
1741 | { | |
d1af0e05 | 1742 | vs->tight.type = VNC_ENCODING_TIGHT; |
efe556ad CC |
1743 | return tight_send_framebuffer_update(vs, x, y, w, h); |
1744 | } | |
1745 | ||
1746 | int vnc_tight_png_send_framebuffer_update(VncState *vs, int x, int y, | |
1747 | int w, int h) | |
1748 | { | |
d1af0e05 | 1749 | vs->tight.type = VNC_ENCODING_TIGHT_PNG; |
efe556ad CC |
1750 | return tight_send_framebuffer_update(vs, x, y, w, h); |
1751 | } | |
1752 | ||
380282b0 CC |
1753 | void vnc_tight_clear(VncState *vs) |
1754 | { | |
1755 | int i; | |
d1af0e05 CC |
1756 | for (i=0; i<ARRAY_SIZE(vs->tight.stream); i++) { |
1757 | if (vs->tight.stream[i].opaque) { | |
1758 | deflateEnd(&vs->tight.stream[i]); | |
380282b0 CC |
1759 | } |
1760 | } | |
1761 | ||
d1af0e05 CC |
1762 | buffer_free(&vs->tight.tight); |
1763 | buffer_free(&vs->tight.zlib); | |
1764 | buffer_free(&vs->tight.gradient); | |
2f6f5c7a | 1765 | #ifdef CONFIG_VNC_JPEG |
d1af0e05 | 1766 | buffer_free(&vs->tight.jpeg); |
2f6f5c7a | 1767 | #endif |
b5469b11 CC |
1768 | #ifdef CONFIG_VNC_PNG |
1769 | buffer_free(&vs->tight.png); | |
1770 | #endif | |
380282b0 | 1771 | } |