1245f7b51SCorentin Chary /* 2245f7b51SCorentin Chary * QEMU VNC display driver: tight encoding 3245f7b51SCorentin Chary * 4245f7b51SCorentin Chary * From libvncserver/libvncserver/tight.c 5245f7b51SCorentin Chary * Copyright (C) 2000, 2001 Const Kaplinsky. All Rights Reserved. 6245f7b51SCorentin Chary * Copyright (C) 1999 AT&T Laboratories Cambridge. All Rights Reserved. 7245f7b51SCorentin Chary * 8245f7b51SCorentin Chary * Copyright (C) 2010 Corentin Chary <corentin.chary@gmail.com> 9245f7b51SCorentin Chary * 10245f7b51SCorentin Chary * Permission is hereby granted, free of charge, to any person obtaining a copy 11245f7b51SCorentin Chary * of this software and associated documentation files (the "Software"), to deal 12245f7b51SCorentin Chary * in the Software without restriction, including without limitation the rights 13245f7b51SCorentin Chary * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 14245f7b51SCorentin Chary * copies of the Software, and to permit persons to whom the Software is 15245f7b51SCorentin Chary * furnished to do so, subject to the following conditions: 16245f7b51SCorentin Chary * 17245f7b51SCorentin Chary * The above copyright notice and this permission notice shall be included in 18245f7b51SCorentin Chary * all copies or substantial portions of the Software. 19245f7b51SCorentin Chary * 20245f7b51SCorentin Chary * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 21245f7b51SCorentin Chary * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 22245f7b51SCorentin Chary * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 23245f7b51SCorentin Chary * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 24245f7b51SCorentin Chary * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 25245f7b51SCorentin Chary * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 26245f7b51SCorentin Chary * THE SOFTWARE. 27245f7b51SCorentin Chary */ 28245f7b51SCorentin Chary 29efe556adSCorentin Chary #include "config-host.h" 30245f7b51SCorentin Chary 31efe556adSCorentin Chary #ifdef CONFIG_VNC_PNG 32efe556adSCorentin Chary #include <png.h> 33efe556adSCorentin Chary #endif 34245f7b51SCorentin Chary #ifdef CONFIG_VNC_JPEG 35245f7b51SCorentin Chary #include <stdio.h> 36245f7b51SCorentin Chary #include <jpeglib.h> 37245f7b51SCorentin Chary #endif 38245f7b51SCorentin Chary 39efe556adSCorentin Chary #include "qemu-common.h" 40efe556adSCorentin Chary 41245f7b51SCorentin Chary #include "bswap.h" 42245f7b51SCorentin Chary #include "qint.h" 43245f7b51SCorentin Chary #include "vnc.h" 44245f7b51SCorentin Chary #include "vnc-enc-tight.h" 455136a052SCorentin Chary #include "vnc-palette.h" 46245f7b51SCorentin Chary 47245f7b51SCorentin Chary /* Compression level stuff. The following array contains various 48245f7b51SCorentin Chary encoder parameters for each of 10 compression levels (0..9). 49245f7b51SCorentin Chary Last three parameters correspond to JPEG quality levels (0..9). */ 50245f7b51SCorentin Chary 51245f7b51SCorentin Chary static const struct { 52245f7b51SCorentin Chary int max_rect_size, max_rect_width; 53245f7b51SCorentin Chary int mono_min_rect_size, gradient_min_rect_size; 54245f7b51SCorentin Chary int idx_zlib_level, mono_zlib_level, raw_zlib_level, gradient_zlib_level; 55245f7b51SCorentin Chary int gradient_threshold, gradient_threshold24; 56245f7b51SCorentin Chary int idx_max_colors_divisor; 57245f7b51SCorentin Chary int jpeg_quality, jpeg_threshold, jpeg_threshold24; 58245f7b51SCorentin Chary } tight_conf[] = { 59245f7b51SCorentin Chary { 512, 32, 6, 65536, 0, 0, 0, 0, 0, 0, 4, 5, 10000, 23000 }, 60245f7b51SCorentin Chary { 2048, 128, 6, 65536, 1, 1, 1, 0, 0, 0, 8, 10, 8000, 18000 }, 61245f7b51SCorentin Chary { 6144, 256, 8, 65536, 3, 3, 2, 0, 0, 0, 24, 15, 6500, 15000 }, 62245f7b51SCorentin Chary { 10240, 1024, 12, 65536, 5, 5, 3, 0, 0, 0, 32, 25, 5000, 12000 }, 63245f7b51SCorentin Chary { 16384, 2048, 12, 65536, 6, 6, 4, 0, 0, 0, 32, 37, 4000, 10000 }, 64245f7b51SCorentin Chary { 32768, 2048, 12, 4096, 7, 7, 5, 4, 150, 380, 32, 50, 3000, 8000 }, 65245f7b51SCorentin Chary { 65536, 2048, 16, 4096, 7, 7, 6, 4, 170, 420, 48, 60, 2000, 5000 }, 66245f7b51SCorentin Chary { 65536, 2048, 16, 4096, 8, 8, 7, 5, 180, 450, 64, 70, 1000, 2500 }, 67245f7b51SCorentin Chary { 65536, 2048, 32, 8192, 9, 9, 8, 6, 190, 475, 64, 75, 500, 1200 }, 68245f7b51SCorentin Chary { 65536, 2048, 32, 8192, 9, 9, 9, 6, 200, 500, 96, 80, 200, 500 } 69245f7b51SCorentin Chary }; 70245f7b51SCorentin Chary 71efe556adSCorentin Chary 72efe556adSCorentin Chary static int tight_send_framebuffer_update(VncState *vs, int x, int y, 73efe556adSCorentin Chary int w, int h); 74efe556adSCorentin Chary 75efe556adSCorentin Chary #ifdef CONFIG_VNC_PNG 763941bf6fSCorentin Chary static const struct { 773941bf6fSCorentin Chary int png_zlib_level, png_filters; 783941bf6fSCorentin Chary } tight_png_conf[] = { 793941bf6fSCorentin Chary { 0, PNG_NO_FILTERS }, 803941bf6fSCorentin Chary { 1, PNG_NO_FILTERS }, 813941bf6fSCorentin Chary { 2, PNG_NO_FILTERS }, 823941bf6fSCorentin Chary { 3, PNG_NO_FILTERS }, 833941bf6fSCorentin Chary { 4, PNG_NO_FILTERS }, 843941bf6fSCorentin Chary { 5, PNG_ALL_FILTERS }, 853941bf6fSCorentin Chary { 6, PNG_ALL_FILTERS }, 863941bf6fSCorentin Chary { 7, PNG_ALL_FILTERS }, 873941bf6fSCorentin Chary { 8, PNG_ALL_FILTERS }, 883941bf6fSCorentin Chary { 9, PNG_ALL_FILTERS }, 893941bf6fSCorentin Chary }; 903941bf6fSCorentin Chary 91efe556adSCorentin Chary static int send_png_rect(VncState *vs, int x, int y, int w, int h, 925136a052SCorentin Chary VncPalette *palette); 93efe556adSCorentin Chary 94efe556adSCorentin Chary static bool tight_can_send_png_rect(VncState *vs, int w, int h) 95efe556adSCorentin Chary { 96d1af0e05SCorentin Chary if (vs->tight.type != VNC_ENCODING_TIGHT_PNG) { 97efe556adSCorentin Chary return false; 98efe556adSCorentin Chary } 99efe556adSCorentin Chary 100efe556adSCorentin Chary if (ds_get_bytes_per_pixel(vs->ds) == 1 || 101efe556adSCorentin Chary vs->clientds.pf.bytes_per_pixel == 1) { 102efe556adSCorentin Chary return false; 103efe556adSCorentin Chary } 104efe556adSCorentin Chary 105efe556adSCorentin Chary return true; 106efe556adSCorentin Chary } 107efe556adSCorentin Chary #endif 108efe556adSCorentin Chary 109245f7b51SCorentin Chary /* 110245f7b51SCorentin Chary * Code to guess if given rectangle is suitable for smooth image 111245f7b51SCorentin Chary * compression (by applying "gradient" filter or JPEG coder). 112245f7b51SCorentin Chary */ 113245f7b51SCorentin Chary 114245f7b51SCorentin Chary static uint 115245f7b51SCorentin Chary tight_detect_smooth_image24(VncState *vs, int w, int h) 116245f7b51SCorentin Chary { 117245f7b51SCorentin Chary int off; 118245f7b51SCorentin Chary int x, y, d, dx; 119245f7b51SCorentin Chary uint c; 120245f7b51SCorentin Chary uint stats[256]; 121245f7b51SCorentin Chary int pixels = 0; 122245f7b51SCorentin Chary int pix, left[3]; 123245f7b51SCorentin Chary uint errors; 124d1af0e05SCorentin Chary unsigned char *buf = vs->tight.tight.buffer; 125245f7b51SCorentin Chary 126245f7b51SCorentin Chary /* 127245f7b51SCorentin Chary * If client is big-endian, color samples begin from the second 128245f7b51SCorentin Chary * byte (offset 1) of a 32-bit pixel value. 129245f7b51SCorentin Chary */ 130245f7b51SCorentin Chary off = !!(vs->clientds.flags & QEMU_BIG_ENDIAN_FLAG); 131245f7b51SCorentin Chary 132245f7b51SCorentin Chary memset(stats, 0, sizeof (stats)); 133245f7b51SCorentin Chary 134245f7b51SCorentin Chary for (y = 0, x = 0; y < h && x < w;) { 135245f7b51SCorentin Chary for (d = 0; d < h - y && d < w - x - VNC_TIGHT_DETECT_SUBROW_WIDTH; 136245f7b51SCorentin Chary d++) { 137245f7b51SCorentin Chary for (c = 0; c < 3; c++) { 138245f7b51SCorentin Chary left[c] = buf[((y+d)*w+x+d)*4+off+c] & 0xFF; 139245f7b51SCorentin Chary } 140245f7b51SCorentin Chary for (dx = 1; dx <= VNC_TIGHT_DETECT_SUBROW_WIDTH; dx++) { 141245f7b51SCorentin Chary for (c = 0; c < 3; c++) { 142245f7b51SCorentin Chary pix = buf[((y+d)*w+x+d+dx)*4+off+c] & 0xFF; 143245f7b51SCorentin Chary stats[abs(pix - left[c])]++; 144245f7b51SCorentin Chary left[c] = pix; 145245f7b51SCorentin Chary } 146245f7b51SCorentin Chary pixels++; 147245f7b51SCorentin Chary } 148245f7b51SCorentin Chary } 149245f7b51SCorentin Chary if (w > h) { 150245f7b51SCorentin Chary x += h; 151245f7b51SCorentin Chary y = 0; 152245f7b51SCorentin Chary } else { 153245f7b51SCorentin Chary x = 0; 154245f7b51SCorentin Chary y += w; 155245f7b51SCorentin Chary } 156245f7b51SCorentin Chary } 157245f7b51SCorentin Chary 158245f7b51SCorentin Chary /* 95% smooth or more ... */ 159245f7b51SCorentin Chary if (stats[0] * 33 / pixels >= 95) { 160245f7b51SCorentin Chary return 0; 161245f7b51SCorentin Chary } 162245f7b51SCorentin Chary 163245f7b51SCorentin Chary errors = 0; 164245f7b51SCorentin Chary for (c = 1; c < 8; c++) { 165245f7b51SCorentin Chary errors += stats[c] * (c * c); 166245f7b51SCorentin Chary if (stats[c] == 0 || stats[c] > stats[c-1] * 2) { 167245f7b51SCorentin Chary return 0; 168245f7b51SCorentin Chary } 169245f7b51SCorentin Chary } 170245f7b51SCorentin Chary for (; c < 256; c++) { 171245f7b51SCorentin Chary errors += stats[c] * (c * c); 172245f7b51SCorentin Chary } 173245f7b51SCorentin Chary errors /= (pixels * 3 - stats[0]); 174245f7b51SCorentin Chary 175245f7b51SCorentin Chary return errors; 176245f7b51SCorentin Chary } 177245f7b51SCorentin Chary 178245f7b51SCorentin Chary #define DEFINE_DETECT_FUNCTION(bpp) \ 179245f7b51SCorentin Chary \ 180245f7b51SCorentin Chary static uint \ 181245f7b51SCorentin Chary tight_detect_smooth_image##bpp(VncState *vs, int w, int h) { \ 182245f7b51SCorentin Chary bool endian; \ 183245f7b51SCorentin Chary uint##bpp##_t pix; \ 184245f7b51SCorentin Chary int max[3], shift[3]; \ 185245f7b51SCorentin Chary int x, y, d, dx; \ 186245f7b51SCorentin Chary uint c; \ 187245f7b51SCorentin Chary uint stats[256]; \ 188245f7b51SCorentin Chary int pixels = 0; \ 189245f7b51SCorentin Chary int sample, sum, left[3]; \ 190245f7b51SCorentin Chary uint errors; \ 191d1af0e05SCorentin Chary unsigned char *buf = vs->tight.tight.buffer; \ 192245f7b51SCorentin Chary \ 193245f7b51SCorentin Chary endian = ((vs->clientds.flags & QEMU_BIG_ENDIAN_FLAG) != \ 194245f7b51SCorentin Chary (vs->ds->surface->flags & QEMU_BIG_ENDIAN_FLAG)); \ 195245f7b51SCorentin Chary \ 196245f7b51SCorentin Chary \ 197245f7b51SCorentin Chary max[0] = vs->clientds.pf.rmax; \ 198245f7b51SCorentin Chary max[1] = vs->clientds.pf.gmax; \ 199245f7b51SCorentin Chary max[2] = vs->clientds.pf.bmax; \ 200245f7b51SCorentin Chary shift[0] = vs->clientds.pf.rshift; \ 201245f7b51SCorentin Chary shift[1] = vs->clientds.pf.gshift; \ 202245f7b51SCorentin Chary shift[2] = vs->clientds.pf.bshift; \ 203245f7b51SCorentin Chary \ 204245f7b51SCorentin Chary memset(stats, 0, sizeof(stats)); \ 205245f7b51SCorentin Chary \ 206245f7b51SCorentin Chary y = 0, x = 0; \ 207245f7b51SCorentin Chary while (y < h && x < w) { \ 208245f7b51SCorentin Chary for (d = 0; d < h - y && \ 209245f7b51SCorentin Chary d < w - x - VNC_TIGHT_DETECT_SUBROW_WIDTH; d++) { \ 210245f7b51SCorentin Chary pix = ((uint##bpp##_t *)buf)[(y+d)*w+x+d]; \ 211245f7b51SCorentin Chary if (endian) { \ 212245f7b51SCorentin Chary pix = bswap_##bpp(pix); \ 213245f7b51SCorentin Chary } \ 214245f7b51SCorentin Chary for (c = 0; c < 3; c++) { \ 215245f7b51SCorentin Chary left[c] = (int)(pix >> shift[c] & max[c]); \ 216245f7b51SCorentin Chary } \ 217245f7b51SCorentin Chary for (dx = 1; dx <= VNC_TIGHT_DETECT_SUBROW_WIDTH; \ 218245f7b51SCorentin Chary dx++) { \ 219245f7b51SCorentin Chary pix = ((uint##bpp##_t *)buf)[(y+d)*w+x+d+dx]; \ 220245f7b51SCorentin Chary if (endian) { \ 221245f7b51SCorentin Chary pix = bswap_##bpp(pix); \ 222245f7b51SCorentin Chary } \ 223245f7b51SCorentin Chary sum = 0; \ 224245f7b51SCorentin Chary for (c = 0; c < 3; c++) { \ 225245f7b51SCorentin Chary sample = (int)(pix >> shift[c] & max[c]); \ 226245f7b51SCorentin Chary sum += abs(sample - left[c]); \ 227245f7b51SCorentin Chary left[c] = sample; \ 228245f7b51SCorentin Chary } \ 229245f7b51SCorentin Chary if (sum > 255) { \ 230245f7b51SCorentin Chary sum = 255; \ 231245f7b51SCorentin Chary } \ 232245f7b51SCorentin Chary stats[sum]++; \ 233245f7b51SCorentin Chary pixels++; \ 234245f7b51SCorentin Chary } \ 235245f7b51SCorentin Chary } \ 236245f7b51SCorentin Chary if (w > h) { \ 237245f7b51SCorentin Chary x += h; \ 238245f7b51SCorentin Chary y = 0; \ 239245f7b51SCorentin Chary } else { \ 240245f7b51SCorentin Chary x = 0; \ 241245f7b51SCorentin Chary y += w; \ 242245f7b51SCorentin Chary } \ 243245f7b51SCorentin Chary } \ 244245f7b51SCorentin Chary \ 245245f7b51SCorentin Chary if ((stats[0] + stats[1]) * 100 / pixels >= 90) { \ 246245f7b51SCorentin Chary return 0; \ 247245f7b51SCorentin Chary } \ 248245f7b51SCorentin Chary \ 249245f7b51SCorentin Chary errors = 0; \ 250245f7b51SCorentin Chary for (c = 1; c < 8; c++) { \ 251245f7b51SCorentin Chary errors += stats[c] * (c * c); \ 252245f7b51SCorentin Chary if (stats[c] == 0 || stats[c] > stats[c-1] * 2) { \ 253245f7b51SCorentin Chary return 0; \ 254245f7b51SCorentin Chary } \ 255245f7b51SCorentin Chary } \ 256245f7b51SCorentin Chary for (; c < 256; c++) { \ 257245f7b51SCorentin Chary errors += stats[c] * (c * c); \ 258245f7b51SCorentin Chary } \ 259245f7b51SCorentin Chary errors /= (pixels - stats[0]); \ 260245f7b51SCorentin Chary \ 261245f7b51SCorentin Chary return errors; \ 262245f7b51SCorentin Chary } 263245f7b51SCorentin Chary 264245f7b51SCorentin Chary DEFINE_DETECT_FUNCTION(16) 265245f7b51SCorentin Chary DEFINE_DETECT_FUNCTION(32) 266245f7b51SCorentin Chary 267245f7b51SCorentin Chary static int 268245f7b51SCorentin Chary tight_detect_smooth_image(VncState *vs, int w, int h) 269245f7b51SCorentin Chary { 270245f7b51SCorentin Chary uint errors; 271d1af0e05SCorentin Chary int compression = vs->tight.compression; 272d1af0e05SCorentin Chary int quality = vs->tight.quality; 273245f7b51SCorentin Chary 274245f7b51SCorentin Chary if (!vs->vd->lossy) { 275245f7b51SCorentin Chary return 0; 276245f7b51SCorentin Chary } 277245f7b51SCorentin Chary 278245f7b51SCorentin Chary if (ds_get_bytes_per_pixel(vs->ds) == 1 || 279245f7b51SCorentin Chary vs->clientds.pf.bytes_per_pixel == 1 || 280245f7b51SCorentin Chary w < VNC_TIGHT_DETECT_MIN_WIDTH || h < VNC_TIGHT_DETECT_MIN_HEIGHT) { 281245f7b51SCorentin Chary return 0; 282245f7b51SCorentin Chary } 283245f7b51SCorentin Chary 2847bccf573SBlue Swirl if (vs->tight.quality != (uint8_t)-1) { 285245f7b51SCorentin Chary if (w * h < VNC_TIGHT_JPEG_MIN_RECT_SIZE) { 286245f7b51SCorentin Chary return 0; 287245f7b51SCorentin Chary } 288245f7b51SCorentin Chary } else { 289245f7b51SCorentin Chary if (w * h < tight_conf[compression].gradient_min_rect_size) { 290245f7b51SCorentin Chary return 0; 291245f7b51SCorentin Chary } 292245f7b51SCorentin Chary } 293245f7b51SCorentin Chary 294245f7b51SCorentin Chary if (vs->clientds.pf.bytes_per_pixel == 4) { 295d1af0e05SCorentin Chary if (vs->tight.pixel24) { 296245f7b51SCorentin Chary errors = tight_detect_smooth_image24(vs, w, h); 2977bccf573SBlue Swirl if (vs->tight.quality != (uint8_t)-1) { 298245f7b51SCorentin Chary return (errors < tight_conf[quality].jpeg_threshold24); 299245f7b51SCorentin Chary } 300245f7b51SCorentin Chary return (errors < tight_conf[compression].gradient_threshold24); 301245f7b51SCorentin Chary } else { 302245f7b51SCorentin Chary errors = tight_detect_smooth_image32(vs, w, h); 303245f7b51SCorentin Chary } 304245f7b51SCorentin Chary } else { 305245f7b51SCorentin Chary errors = tight_detect_smooth_image16(vs, w, h); 306245f7b51SCorentin Chary } 307245f7b51SCorentin Chary if (quality != -1) { 308245f7b51SCorentin Chary return (errors < tight_conf[quality].jpeg_threshold); 309245f7b51SCorentin Chary } 310245f7b51SCorentin Chary return (errors < tight_conf[compression].gradient_threshold); 311245f7b51SCorentin Chary } 312245f7b51SCorentin Chary 313245f7b51SCorentin Chary /* 314245f7b51SCorentin Chary * Code to determine how many different colors used in rectangle. 315245f7b51SCorentin Chary */ 316245f7b51SCorentin Chary #define DEFINE_FILL_PALETTE_FUNCTION(bpp) \ 317245f7b51SCorentin Chary \ 318245f7b51SCorentin Chary static int \ 319245f7b51SCorentin Chary tight_fill_palette##bpp(VncState *vs, int x, int y, \ 320245f7b51SCorentin Chary int max, size_t count, \ 321245f7b51SCorentin Chary uint32_t *bg, uint32_t *fg, \ 3225136a052SCorentin Chary VncPalette **palette) { \ 323245f7b51SCorentin Chary uint##bpp##_t *data; \ 324245f7b51SCorentin Chary uint##bpp##_t c0, c1, ci; \ 325245f7b51SCorentin Chary int i, n0, n1; \ 326245f7b51SCorentin Chary \ 327d1af0e05SCorentin Chary data = (uint##bpp##_t *)vs->tight.tight.buffer; \ 328245f7b51SCorentin Chary \ 329245f7b51SCorentin Chary c0 = data[0]; \ 330245f7b51SCorentin Chary i = 1; \ 331245f7b51SCorentin Chary while (i < count && data[i] == c0) \ 332245f7b51SCorentin Chary i++; \ 333245f7b51SCorentin Chary if (i >= count) { \ 334245f7b51SCorentin Chary *bg = *fg = c0; \ 335245f7b51SCorentin Chary return 1; \ 336245f7b51SCorentin Chary } \ 337245f7b51SCorentin Chary \ 338245f7b51SCorentin Chary if (max < 2) { \ 339245f7b51SCorentin Chary return 0; \ 340245f7b51SCorentin Chary } \ 341245f7b51SCorentin Chary \ 342245f7b51SCorentin Chary n0 = i; \ 343245f7b51SCorentin Chary c1 = data[i]; \ 344245f7b51SCorentin Chary n1 = 0; \ 345245f7b51SCorentin Chary for (i++; i < count; i++) { \ 346245f7b51SCorentin Chary ci = data[i]; \ 347245f7b51SCorentin Chary if (ci == c0) { \ 348245f7b51SCorentin Chary n0++; \ 349245f7b51SCorentin Chary } else if (ci == c1) { \ 350245f7b51SCorentin Chary n1++; \ 351245f7b51SCorentin Chary } else \ 352245f7b51SCorentin Chary break; \ 353245f7b51SCorentin Chary } \ 354245f7b51SCorentin Chary if (i >= count) { \ 355245f7b51SCorentin Chary if (n0 > n1) { \ 356245f7b51SCorentin Chary *bg = (uint32_t)c0; \ 357245f7b51SCorentin Chary *fg = (uint32_t)c1; \ 358245f7b51SCorentin Chary } else { \ 359245f7b51SCorentin Chary *bg = (uint32_t)c1; \ 360245f7b51SCorentin Chary *fg = (uint32_t)c0; \ 361245f7b51SCorentin Chary } \ 362245f7b51SCorentin Chary return 2; \ 363245f7b51SCorentin Chary } \ 364245f7b51SCorentin Chary \ 365245f7b51SCorentin Chary if (max == 2) { \ 366245f7b51SCorentin Chary return 0; \ 367245f7b51SCorentin Chary } \ 368245f7b51SCorentin Chary \ 3695136a052SCorentin Chary *palette = palette_new(max, bpp); \ 3705136a052SCorentin Chary palette_put(*palette, c0); \ 3715136a052SCorentin Chary palette_put(*palette, c1); \ 3725136a052SCorentin Chary palette_put(*palette, ci); \ 373245f7b51SCorentin Chary \ 374245f7b51SCorentin Chary for (i++; i < count; i++) { \ 375245f7b51SCorentin Chary if (data[i] == ci) { \ 376245f7b51SCorentin Chary continue; \ 377245f7b51SCorentin Chary } else { \ 3785d8efe39SCorentin Chary ci = data[i]; \ 3795136a052SCorentin Chary if (!palette_put(*palette, (uint32_t)ci)) { \ 380245f7b51SCorentin Chary return 0; \ 381245f7b51SCorentin Chary } \ 382245f7b51SCorentin Chary } \ 383245f7b51SCorentin Chary } \ 384245f7b51SCorentin Chary \ 3855136a052SCorentin Chary return palette_size(*palette); \ 386245f7b51SCorentin Chary } 387245f7b51SCorentin Chary 388245f7b51SCorentin Chary DEFINE_FILL_PALETTE_FUNCTION(8) 389245f7b51SCorentin Chary DEFINE_FILL_PALETTE_FUNCTION(16) 390245f7b51SCorentin Chary DEFINE_FILL_PALETTE_FUNCTION(32) 391245f7b51SCorentin Chary 392245f7b51SCorentin Chary static int tight_fill_palette(VncState *vs, int x, int y, 393245f7b51SCorentin Chary size_t count, uint32_t *bg, uint32_t *fg, 3945136a052SCorentin Chary VncPalette **palette) 395245f7b51SCorentin Chary { 396245f7b51SCorentin Chary int max; 397245f7b51SCorentin Chary 398d1af0e05SCorentin Chary max = count / tight_conf[vs->tight.compression].idx_max_colors_divisor; 399245f7b51SCorentin Chary if (max < 2 && 400d1af0e05SCorentin Chary count >= tight_conf[vs->tight.compression].mono_min_rect_size) { 401245f7b51SCorentin Chary max = 2; 402245f7b51SCorentin Chary } 403245f7b51SCorentin Chary if (max >= 256) { 404245f7b51SCorentin Chary max = 256; 405245f7b51SCorentin Chary } 406245f7b51SCorentin Chary 407245f7b51SCorentin Chary switch(vs->clientds.pf.bytes_per_pixel) { 408245f7b51SCorentin Chary case 4: 409245f7b51SCorentin Chary return tight_fill_palette32(vs, x, y, max, count, bg, fg, palette); 410245f7b51SCorentin Chary case 2: 411245f7b51SCorentin Chary return tight_fill_palette16(vs, x, y, max, count, bg, fg, palette); 412245f7b51SCorentin Chary default: 413245f7b51SCorentin Chary max = 2; 414245f7b51SCorentin Chary return tight_fill_palette8(vs, x, y, max, count, bg, fg, palette); 415245f7b51SCorentin Chary } 416245f7b51SCorentin Chary return 0; 417245f7b51SCorentin Chary } 418245f7b51SCorentin Chary 419245f7b51SCorentin Chary /* 420245f7b51SCorentin Chary * Converting truecolor samples into palette indices. 421245f7b51SCorentin Chary */ 422245f7b51SCorentin Chary #define DEFINE_IDX_ENCODE_FUNCTION(bpp) \ 423245f7b51SCorentin Chary \ 424245f7b51SCorentin Chary static void \ 425245f7b51SCorentin Chary tight_encode_indexed_rect##bpp(uint8_t *buf, int count, \ 4265136a052SCorentin Chary VncPalette *palette) { \ 427245f7b51SCorentin Chary uint##bpp##_t *src; \ 428245f7b51SCorentin Chary uint##bpp##_t rgb; \ 429245f7b51SCorentin Chary int i, rep; \ 430245f7b51SCorentin Chary uint8_t idx; \ 431245f7b51SCorentin Chary \ 432245f7b51SCorentin Chary src = (uint##bpp##_t *) buf; \ 433245f7b51SCorentin Chary \ 434245f7b51SCorentin Chary for (i = 0; i < count; i++) { \ 435efe556adSCorentin Chary \ 436245f7b51SCorentin Chary rgb = *src++; \ 437245f7b51SCorentin Chary rep = 0; \ 438245f7b51SCorentin Chary while (i < count && *src == rgb) { \ 439245f7b51SCorentin Chary rep++, src++, i++; \ 440245f7b51SCorentin Chary } \ 4415136a052SCorentin Chary idx = palette_idx(palette, rgb); \ 442245f7b51SCorentin Chary /* \ 443245f7b51SCorentin Chary * Should never happen, but don't break everything \ 444245f7b51SCorentin Chary * if it does, use the first color instead \ 445245f7b51SCorentin Chary */ \ 4467bccf573SBlue Swirl if (idx == (uint8_t)-1) { \ 447245f7b51SCorentin Chary idx = 0; \ 448245f7b51SCorentin Chary } \ 449245f7b51SCorentin Chary while (rep >= 0) { \ 450245f7b51SCorentin Chary *buf++ = idx; \ 451245f7b51SCorentin Chary rep--; \ 452245f7b51SCorentin Chary } \ 453245f7b51SCorentin Chary } \ 454245f7b51SCorentin Chary } 455245f7b51SCorentin Chary 456245f7b51SCorentin Chary DEFINE_IDX_ENCODE_FUNCTION(16) 457245f7b51SCorentin Chary DEFINE_IDX_ENCODE_FUNCTION(32) 458245f7b51SCorentin Chary 459245f7b51SCorentin Chary #define DEFINE_MONO_ENCODE_FUNCTION(bpp) \ 460245f7b51SCorentin Chary \ 461245f7b51SCorentin Chary static void \ 462245f7b51SCorentin Chary tight_encode_mono_rect##bpp(uint8_t *buf, int w, int h, \ 463245f7b51SCorentin Chary uint##bpp##_t bg, uint##bpp##_t fg) { \ 464245f7b51SCorentin Chary uint##bpp##_t *ptr; \ 465245f7b51SCorentin Chary unsigned int value, mask; \ 466245f7b51SCorentin Chary int aligned_width; \ 467245f7b51SCorentin Chary int x, y, bg_bits; \ 468245f7b51SCorentin Chary \ 469245f7b51SCorentin Chary ptr = (uint##bpp##_t *) buf; \ 470245f7b51SCorentin Chary aligned_width = w - w % 8; \ 471245f7b51SCorentin Chary \ 472245f7b51SCorentin Chary for (y = 0; y < h; y++) { \ 473245f7b51SCorentin Chary for (x = 0; x < aligned_width; x += 8) { \ 474245f7b51SCorentin Chary for (bg_bits = 0; bg_bits < 8; bg_bits++) { \ 475245f7b51SCorentin Chary if (*ptr++ != bg) { \ 476245f7b51SCorentin Chary break; \ 477245f7b51SCorentin Chary } \ 478245f7b51SCorentin Chary } \ 479245f7b51SCorentin Chary if (bg_bits == 8) { \ 480245f7b51SCorentin Chary *buf++ = 0; \ 481245f7b51SCorentin Chary continue; \ 482245f7b51SCorentin Chary } \ 483245f7b51SCorentin Chary mask = 0x80 >> bg_bits; \ 484245f7b51SCorentin Chary value = mask; \ 485245f7b51SCorentin Chary for (bg_bits++; bg_bits < 8; bg_bits++) { \ 486245f7b51SCorentin Chary mask >>= 1; \ 487245f7b51SCorentin Chary if (*ptr++ != bg) { \ 488245f7b51SCorentin Chary value |= mask; \ 489245f7b51SCorentin Chary } \ 490245f7b51SCorentin Chary } \ 491245f7b51SCorentin Chary *buf++ = (uint8_t)value; \ 492245f7b51SCorentin Chary } \ 493245f7b51SCorentin Chary \ 494245f7b51SCorentin Chary mask = 0x80; \ 495245f7b51SCorentin Chary value = 0; \ 496245f7b51SCorentin Chary if (x >= w) { \ 497245f7b51SCorentin Chary continue; \ 498245f7b51SCorentin Chary } \ 499245f7b51SCorentin Chary \ 500245f7b51SCorentin Chary for (; x < w; x++) { \ 501245f7b51SCorentin Chary if (*ptr++ != bg) { \ 502245f7b51SCorentin Chary value |= mask; \ 503245f7b51SCorentin Chary } \ 504245f7b51SCorentin Chary mask >>= 1; \ 505245f7b51SCorentin Chary } \ 506245f7b51SCorentin Chary *buf++ = (uint8_t)value; \ 507245f7b51SCorentin Chary } \ 508245f7b51SCorentin Chary } 509245f7b51SCorentin Chary 510245f7b51SCorentin Chary DEFINE_MONO_ENCODE_FUNCTION(8) 511245f7b51SCorentin Chary DEFINE_MONO_ENCODE_FUNCTION(16) 512245f7b51SCorentin Chary DEFINE_MONO_ENCODE_FUNCTION(32) 513245f7b51SCorentin Chary 514245f7b51SCorentin Chary /* 515245f7b51SCorentin Chary * ``Gradient'' filter for 24-bit color samples. 516245f7b51SCorentin Chary * Should be called only when redMax, greenMax and blueMax are 255. 517245f7b51SCorentin Chary * Color components assumed to be byte-aligned. 518245f7b51SCorentin Chary */ 519245f7b51SCorentin Chary 520245f7b51SCorentin Chary static void 521245f7b51SCorentin Chary tight_filter_gradient24(VncState *vs, uint8_t *buf, int w, int h) 522245f7b51SCorentin Chary { 523245f7b51SCorentin Chary uint32_t *buf32; 524245f7b51SCorentin Chary uint32_t pix32; 525245f7b51SCorentin Chary int shift[3]; 526245f7b51SCorentin Chary int *prev; 527245f7b51SCorentin Chary int here[3], upper[3], left[3], upperleft[3]; 528245f7b51SCorentin Chary int prediction; 529245f7b51SCorentin Chary int x, y, c; 530245f7b51SCorentin Chary 531245f7b51SCorentin Chary buf32 = (uint32_t *)buf; 532d1af0e05SCorentin Chary memset(vs->tight.gradient.buffer, 0, w * 3 * sizeof(int)); 533245f7b51SCorentin Chary 534245f7b51SCorentin Chary if ((vs->clientds.flags & QEMU_BIG_ENDIAN_FLAG) == 535245f7b51SCorentin Chary (vs->ds->surface->flags & QEMU_BIG_ENDIAN_FLAG)) { 536245f7b51SCorentin Chary shift[0] = vs->clientds.pf.rshift; 537245f7b51SCorentin Chary shift[1] = vs->clientds.pf.gshift; 538245f7b51SCorentin Chary shift[2] = vs->clientds.pf.bshift; 539245f7b51SCorentin Chary } else { 540245f7b51SCorentin Chary shift[0] = 24 - vs->clientds.pf.rshift; 541245f7b51SCorentin Chary shift[1] = 24 - vs->clientds.pf.gshift; 542245f7b51SCorentin Chary shift[2] = 24 - vs->clientds.pf.bshift; 543245f7b51SCorentin Chary } 544245f7b51SCorentin Chary 545245f7b51SCorentin Chary for (y = 0; y < h; y++) { 546245f7b51SCorentin Chary for (c = 0; c < 3; c++) { 547245f7b51SCorentin Chary upper[c] = 0; 548245f7b51SCorentin Chary here[c] = 0; 549245f7b51SCorentin Chary } 550d1af0e05SCorentin Chary prev = (int *)vs->tight.gradient.buffer; 551245f7b51SCorentin Chary for (x = 0; x < w; x++) { 552245f7b51SCorentin Chary pix32 = *buf32++; 553245f7b51SCorentin Chary for (c = 0; c < 3; c++) { 554245f7b51SCorentin Chary upperleft[c] = upper[c]; 555245f7b51SCorentin Chary left[c] = here[c]; 556245f7b51SCorentin Chary upper[c] = *prev; 557245f7b51SCorentin Chary here[c] = (int)(pix32 >> shift[c] & 0xFF); 558245f7b51SCorentin Chary *prev++ = here[c]; 559245f7b51SCorentin Chary 560245f7b51SCorentin Chary prediction = left[c] + upper[c] - upperleft[c]; 561245f7b51SCorentin Chary if (prediction < 0) { 562245f7b51SCorentin Chary prediction = 0; 563245f7b51SCorentin Chary } else if (prediction > 0xFF) { 564245f7b51SCorentin Chary prediction = 0xFF; 565245f7b51SCorentin Chary } 566245f7b51SCorentin Chary *buf++ = (char)(here[c] - prediction); 567245f7b51SCorentin Chary } 568245f7b51SCorentin Chary } 569245f7b51SCorentin Chary } 570245f7b51SCorentin Chary } 571245f7b51SCorentin Chary 572245f7b51SCorentin Chary 573245f7b51SCorentin Chary /* 574245f7b51SCorentin Chary * ``Gradient'' filter for other color depths. 575245f7b51SCorentin Chary */ 576245f7b51SCorentin Chary 577245f7b51SCorentin Chary #define DEFINE_GRADIENT_FILTER_FUNCTION(bpp) \ 578245f7b51SCorentin Chary \ 579245f7b51SCorentin Chary static void \ 580245f7b51SCorentin Chary tight_filter_gradient##bpp(VncState *vs, uint##bpp##_t *buf, \ 581245f7b51SCorentin Chary int w, int h) { \ 582245f7b51SCorentin Chary uint##bpp##_t pix, diff; \ 583245f7b51SCorentin Chary bool endian; \ 584245f7b51SCorentin Chary int *prev; \ 585245f7b51SCorentin Chary int max[3], shift[3]; \ 586245f7b51SCorentin Chary int here[3], upper[3], left[3], upperleft[3]; \ 587245f7b51SCorentin Chary int prediction; \ 588245f7b51SCorentin Chary int x, y, c; \ 589245f7b51SCorentin Chary \ 590d1af0e05SCorentin Chary memset (vs->tight.gradient.buffer, 0, w * 3 * sizeof(int)); \ 591245f7b51SCorentin Chary \ 592245f7b51SCorentin Chary endian = ((vs->clientds.flags & QEMU_BIG_ENDIAN_FLAG) != \ 593245f7b51SCorentin Chary (vs->ds->surface->flags & QEMU_BIG_ENDIAN_FLAG)); \ 594245f7b51SCorentin Chary \ 595245f7b51SCorentin Chary max[0] = vs->clientds.pf.rmax; \ 596245f7b51SCorentin Chary max[1] = vs->clientds.pf.gmax; \ 597245f7b51SCorentin Chary max[2] = vs->clientds.pf.bmax; \ 598245f7b51SCorentin Chary shift[0] = vs->clientds.pf.rshift; \ 599245f7b51SCorentin Chary shift[1] = vs->clientds.pf.gshift; \ 600245f7b51SCorentin Chary shift[2] = vs->clientds.pf.bshift; \ 601245f7b51SCorentin Chary \ 602245f7b51SCorentin Chary for (y = 0; y < h; y++) { \ 603245f7b51SCorentin Chary for (c = 0; c < 3; c++) { \ 604245f7b51SCorentin Chary upper[c] = 0; \ 605245f7b51SCorentin Chary here[c] = 0; \ 606245f7b51SCorentin Chary } \ 607d1af0e05SCorentin Chary prev = (int *)vs->tight.gradient.buffer; \ 608245f7b51SCorentin Chary for (x = 0; x < w; x++) { \ 609245f7b51SCorentin Chary pix = *buf; \ 610245f7b51SCorentin Chary if (endian) { \ 611245f7b51SCorentin Chary pix = bswap_##bpp(pix); \ 612245f7b51SCorentin Chary } \ 613245f7b51SCorentin Chary diff = 0; \ 614245f7b51SCorentin Chary for (c = 0; c < 3; c++) { \ 615245f7b51SCorentin Chary upperleft[c] = upper[c]; \ 616245f7b51SCorentin Chary left[c] = here[c]; \ 617245f7b51SCorentin Chary upper[c] = *prev; \ 618245f7b51SCorentin Chary here[c] = (int)(pix >> shift[c] & max[c]); \ 619245f7b51SCorentin Chary *prev++ = here[c]; \ 620245f7b51SCorentin Chary \ 621245f7b51SCorentin Chary prediction = left[c] + upper[c] - upperleft[c]; \ 622245f7b51SCorentin Chary if (prediction < 0) { \ 623245f7b51SCorentin Chary prediction = 0; \ 624245f7b51SCorentin Chary } else if (prediction > max[c]) { \ 625245f7b51SCorentin Chary prediction = max[c]; \ 626245f7b51SCorentin Chary } \ 627245f7b51SCorentin Chary diff |= ((here[c] - prediction) & max[c]) \ 628245f7b51SCorentin Chary << shift[c]; \ 629245f7b51SCorentin Chary } \ 630245f7b51SCorentin Chary if (endian) { \ 631245f7b51SCorentin Chary diff = bswap_##bpp(diff); \ 632245f7b51SCorentin Chary } \ 633245f7b51SCorentin Chary *buf++ = diff; \ 634245f7b51SCorentin Chary } \ 635245f7b51SCorentin Chary } \ 636245f7b51SCorentin Chary } 637245f7b51SCorentin Chary 638245f7b51SCorentin Chary DEFINE_GRADIENT_FILTER_FUNCTION(16) 639245f7b51SCorentin Chary DEFINE_GRADIENT_FILTER_FUNCTION(32) 640245f7b51SCorentin Chary 641245f7b51SCorentin Chary /* 642245f7b51SCorentin Chary * Check if a rectangle is all of the same color. If needSameColor is 643245f7b51SCorentin Chary * set to non-zero, then also check that its color equals to the 644245f7b51SCorentin Chary * *colorPtr value. The result is 1 if the test is successfull, and in 645245f7b51SCorentin Chary * that case new color will be stored in *colorPtr. 646245f7b51SCorentin Chary */ 647245f7b51SCorentin Chary 648245f7b51SCorentin Chary #define DEFINE_CHECK_SOLID_FUNCTION(bpp) \ 649245f7b51SCorentin Chary \ 650245f7b51SCorentin Chary static bool \ 651245f7b51SCorentin Chary check_solid_tile##bpp(VncState *vs, int x, int y, int w, int h, \ 652245f7b51SCorentin Chary uint32_t* color, bool samecolor) \ 653245f7b51SCorentin Chary { \ 654245f7b51SCorentin Chary VncDisplay *vd = vs->vd; \ 655245f7b51SCorentin Chary uint##bpp##_t *fbptr; \ 656245f7b51SCorentin Chary uint##bpp##_t c; \ 657245f7b51SCorentin Chary int dx, dy; \ 658245f7b51SCorentin Chary \ 659245f7b51SCorentin Chary fbptr = (uint##bpp##_t *) \ 660245f7b51SCorentin Chary (vd->server->data + y * ds_get_linesize(vs->ds) + \ 661245f7b51SCorentin Chary x * ds_get_bytes_per_pixel(vs->ds)); \ 662245f7b51SCorentin Chary \ 663245f7b51SCorentin Chary c = *fbptr; \ 664245f7b51SCorentin Chary if (samecolor && (uint32_t)c != *color) { \ 665245f7b51SCorentin Chary return false; \ 666245f7b51SCorentin Chary } \ 667245f7b51SCorentin Chary \ 668245f7b51SCorentin Chary for (dy = 0; dy < h; dy++) { \ 669245f7b51SCorentin Chary for (dx = 0; dx < w; dx++) { \ 670245f7b51SCorentin Chary if (c != fbptr[dx]) { \ 671245f7b51SCorentin Chary return false; \ 672245f7b51SCorentin Chary } \ 673245f7b51SCorentin Chary } \ 674245f7b51SCorentin Chary fbptr = (uint##bpp##_t *) \ 675245f7b51SCorentin Chary ((uint8_t *)fbptr + ds_get_linesize(vs->ds)); \ 676245f7b51SCorentin Chary } \ 677245f7b51SCorentin Chary \ 678245f7b51SCorentin Chary *color = (uint32_t)c; \ 679245f7b51SCorentin Chary return true; \ 680245f7b51SCorentin Chary } 681245f7b51SCorentin Chary 682245f7b51SCorentin Chary DEFINE_CHECK_SOLID_FUNCTION(32) 683245f7b51SCorentin Chary DEFINE_CHECK_SOLID_FUNCTION(16) 684245f7b51SCorentin Chary DEFINE_CHECK_SOLID_FUNCTION(8) 685245f7b51SCorentin Chary 686245f7b51SCorentin Chary static bool check_solid_tile(VncState *vs, int x, int y, int w, int h, 687245f7b51SCorentin Chary uint32_t* color, bool samecolor) 688245f7b51SCorentin Chary { 689245f7b51SCorentin Chary VncDisplay *vd = vs->vd; 690245f7b51SCorentin Chary 691245f7b51SCorentin Chary switch(vd->server->pf.bytes_per_pixel) { 692245f7b51SCorentin Chary case 4: 693245f7b51SCorentin Chary return check_solid_tile32(vs, x, y, w, h, color, samecolor); 694245f7b51SCorentin Chary case 2: 695245f7b51SCorentin Chary return check_solid_tile16(vs, x, y, w, h, color, samecolor); 696245f7b51SCorentin Chary default: 697245f7b51SCorentin Chary return check_solid_tile8(vs, x, y, w, h, color, samecolor); 698245f7b51SCorentin Chary } 699245f7b51SCorentin Chary } 700245f7b51SCorentin Chary 701245f7b51SCorentin Chary static void find_best_solid_area(VncState *vs, int x, int y, int w, int h, 702245f7b51SCorentin Chary uint32_t color, int *w_ptr, int *h_ptr) 703245f7b51SCorentin Chary { 704245f7b51SCorentin Chary int dx, dy, dw, dh; 705245f7b51SCorentin Chary int w_prev; 706245f7b51SCorentin Chary int w_best = 0, h_best = 0; 707245f7b51SCorentin Chary 708245f7b51SCorentin Chary w_prev = w; 709245f7b51SCorentin Chary 710245f7b51SCorentin Chary for (dy = y; dy < y + h; dy += VNC_TIGHT_MAX_SPLIT_TILE_SIZE) { 711245f7b51SCorentin Chary 712245f7b51SCorentin Chary dh = MIN(VNC_TIGHT_MAX_SPLIT_TILE_SIZE, y + h - dy); 713245f7b51SCorentin Chary dw = MIN(VNC_TIGHT_MAX_SPLIT_TILE_SIZE, w_prev); 714245f7b51SCorentin Chary 715245f7b51SCorentin Chary if (!check_solid_tile(vs, x, dy, dw, dh, &color, true)) { 716245f7b51SCorentin Chary break; 717245f7b51SCorentin Chary } 718245f7b51SCorentin Chary 719245f7b51SCorentin Chary for (dx = x + dw; dx < x + w_prev;) { 720245f7b51SCorentin Chary dw = MIN(VNC_TIGHT_MAX_SPLIT_TILE_SIZE, x + w_prev - dx); 721245f7b51SCorentin Chary 722245f7b51SCorentin Chary if (!check_solid_tile(vs, dx, dy, dw, dh, &color, true)) { 723245f7b51SCorentin Chary break; 724245f7b51SCorentin Chary } 725245f7b51SCorentin Chary dx += dw; 726245f7b51SCorentin Chary } 727245f7b51SCorentin Chary 728245f7b51SCorentin Chary w_prev = dx - x; 729245f7b51SCorentin Chary if (w_prev * (dy + dh - y) > w_best * h_best) { 730245f7b51SCorentin Chary w_best = w_prev; 731245f7b51SCorentin Chary h_best = dy + dh - y; 732245f7b51SCorentin Chary } 733245f7b51SCorentin Chary } 734245f7b51SCorentin Chary 735245f7b51SCorentin Chary *w_ptr = w_best; 736245f7b51SCorentin Chary *h_ptr = h_best; 737245f7b51SCorentin Chary } 738245f7b51SCorentin Chary 739245f7b51SCorentin Chary static void extend_solid_area(VncState *vs, int x, int y, int w, int h, 740245f7b51SCorentin Chary uint32_t color, int *x_ptr, int *y_ptr, 741245f7b51SCorentin Chary int *w_ptr, int *h_ptr) 742245f7b51SCorentin Chary { 743245f7b51SCorentin Chary int cx, cy; 744245f7b51SCorentin Chary 745245f7b51SCorentin Chary /* Try to extend the area upwards. */ 746245f7b51SCorentin Chary for ( cy = *y_ptr - 1; 747245f7b51SCorentin Chary cy >= y && check_solid_tile(vs, *x_ptr, cy, *w_ptr, 1, &color, true); 748245f7b51SCorentin Chary cy-- ); 749245f7b51SCorentin Chary *h_ptr += *y_ptr - (cy + 1); 750245f7b51SCorentin Chary *y_ptr = cy + 1; 751245f7b51SCorentin Chary 752245f7b51SCorentin Chary /* ... downwards. */ 753245f7b51SCorentin Chary for ( cy = *y_ptr + *h_ptr; 754245f7b51SCorentin Chary cy < y + h && 755245f7b51SCorentin Chary check_solid_tile(vs, *x_ptr, cy, *w_ptr, 1, &color, true); 756245f7b51SCorentin Chary cy++ ); 757245f7b51SCorentin Chary *h_ptr += cy - (*y_ptr + *h_ptr); 758245f7b51SCorentin Chary 759245f7b51SCorentin Chary /* ... to the left. */ 760245f7b51SCorentin Chary for ( cx = *x_ptr - 1; 761245f7b51SCorentin Chary cx >= x && check_solid_tile(vs, cx, *y_ptr, 1, *h_ptr, &color, true); 762245f7b51SCorentin Chary cx-- ); 763245f7b51SCorentin Chary *w_ptr += *x_ptr - (cx + 1); 764245f7b51SCorentin Chary *x_ptr = cx + 1; 765245f7b51SCorentin Chary 766245f7b51SCorentin Chary /* ... to the right. */ 767245f7b51SCorentin Chary for ( cx = *x_ptr + *w_ptr; 768245f7b51SCorentin Chary cx < x + w && 769245f7b51SCorentin Chary check_solid_tile(vs, cx, *y_ptr, 1, *h_ptr, &color, true); 770245f7b51SCorentin Chary cx++ ); 771245f7b51SCorentin Chary *w_ptr += cx - (*x_ptr + *w_ptr); 772245f7b51SCorentin Chary } 773245f7b51SCorentin Chary 774245f7b51SCorentin Chary static int tight_init_stream(VncState *vs, int stream_id, 775245f7b51SCorentin Chary int level, int strategy) 776245f7b51SCorentin Chary { 777d1af0e05SCorentin Chary z_streamp zstream = &vs->tight.stream[stream_id]; 778245f7b51SCorentin Chary 779245f7b51SCorentin Chary if (zstream->opaque == NULL) { 780245f7b51SCorentin Chary int err; 781245f7b51SCorentin Chary 782245f7b51SCorentin Chary VNC_DEBUG("VNC: TIGHT: initializing zlib stream %d\n", stream_id); 783245f7b51SCorentin Chary VNC_DEBUG("VNC: TIGHT: opaque = %p | vs = %p\n", zstream->opaque, vs); 784245f7b51SCorentin Chary zstream->zalloc = vnc_zlib_zalloc; 785245f7b51SCorentin Chary zstream->zfree = vnc_zlib_zfree; 786245f7b51SCorentin Chary 787245f7b51SCorentin Chary err = deflateInit2(zstream, level, Z_DEFLATED, MAX_WBITS, 788245f7b51SCorentin Chary MAX_MEM_LEVEL, strategy); 789245f7b51SCorentin Chary 790245f7b51SCorentin Chary if (err != Z_OK) { 791245f7b51SCorentin Chary fprintf(stderr, "VNC: error initializing zlib\n"); 792245f7b51SCorentin Chary return -1; 793245f7b51SCorentin Chary } 794245f7b51SCorentin Chary 795d1af0e05SCorentin Chary vs->tight.levels[stream_id] = level; 796245f7b51SCorentin Chary zstream->opaque = vs; 797245f7b51SCorentin Chary } 798245f7b51SCorentin Chary 799d1af0e05SCorentin Chary if (vs->tight.levels[stream_id] != level) { 800245f7b51SCorentin Chary if (deflateParams(zstream, level, strategy) != Z_OK) { 801245f7b51SCorentin Chary return -1; 802245f7b51SCorentin Chary } 803d1af0e05SCorentin Chary vs->tight.levels[stream_id] = level; 804245f7b51SCorentin Chary } 805245f7b51SCorentin Chary return 0; 806245f7b51SCorentin Chary } 807245f7b51SCorentin Chary 808245f7b51SCorentin Chary static void tight_send_compact_size(VncState *vs, size_t len) 809245f7b51SCorentin Chary { 810245f7b51SCorentin Chary int lpc = 0; 811245f7b51SCorentin Chary int bytes = 0; 812245f7b51SCorentin Chary char buf[3] = {0, 0, 0}; 813245f7b51SCorentin Chary 814245f7b51SCorentin Chary buf[bytes++] = len & 0x7F; 815245f7b51SCorentin Chary if (len > 0x7F) { 816245f7b51SCorentin Chary buf[bytes-1] |= 0x80; 817245f7b51SCorentin Chary buf[bytes++] = (len >> 7) & 0x7F; 818245f7b51SCorentin Chary if (len > 0x3FFF) { 819245f7b51SCorentin Chary buf[bytes-1] |= 0x80; 820245f7b51SCorentin Chary buf[bytes++] = (len >> 14) & 0xFF; 821245f7b51SCorentin Chary } 822245f7b51SCorentin Chary } 823245f7b51SCorentin Chary for (lpc = 0; lpc < bytes; lpc++) { 824245f7b51SCorentin Chary vnc_write_u8(vs, buf[lpc]); 825245f7b51SCorentin Chary } 826245f7b51SCorentin Chary } 827245f7b51SCorentin Chary 828245f7b51SCorentin Chary static int tight_compress_data(VncState *vs, int stream_id, size_t bytes, 829245f7b51SCorentin Chary int level, int strategy) 830245f7b51SCorentin Chary { 831d1af0e05SCorentin Chary z_streamp zstream = &vs->tight.stream[stream_id]; 832245f7b51SCorentin Chary int previous_out; 833245f7b51SCorentin Chary 834245f7b51SCorentin Chary if (bytes < VNC_TIGHT_MIN_TO_COMPRESS) { 835d1af0e05SCorentin Chary vnc_write(vs, vs->tight.tight.buffer, vs->tight.tight.offset); 836245f7b51SCorentin Chary return bytes; 837245f7b51SCorentin Chary } 838245f7b51SCorentin Chary 839245f7b51SCorentin Chary if (tight_init_stream(vs, stream_id, level, strategy)) { 840245f7b51SCorentin Chary return -1; 841245f7b51SCorentin Chary } 842245f7b51SCorentin Chary 843245f7b51SCorentin Chary /* reserve memory in output buffer */ 844d1af0e05SCorentin Chary buffer_reserve(&vs->tight.zlib, bytes + 64); 845245f7b51SCorentin Chary 846245f7b51SCorentin Chary /* set pointers */ 847d1af0e05SCorentin Chary zstream->next_in = vs->tight.tight.buffer; 848d1af0e05SCorentin Chary zstream->avail_in = vs->tight.tight.offset; 849d1af0e05SCorentin Chary zstream->next_out = vs->tight.zlib.buffer + vs->tight.zlib.offset; 850d1af0e05SCorentin Chary zstream->avail_out = vs->tight.zlib.capacity - vs->tight.zlib.offset; 851245f7b51SCorentin Chary zstream->data_type = Z_BINARY; 852245f7b51SCorentin Chary previous_out = zstream->total_out; 853245f7b51SCorentin Chary 854245f7b51SCorentin Chary /* start encoding */ 855245f7b51SCorentin Chary if (deflate(zstream, Z_SYNC_FLUSH) != Z_OK) { 856245f7b51SCorentin Chary fprintf(stderr, "VNC: error during tight compression\n"); 857245f7b51SCorentin Chary return -1; 858245f7b51SCorentin Chary } 859245f7b51SCorentin Chary 860d1af0e05SCorentin Chary vs->tight.zlib.offset = vs->tight.zlib.capacity - zstream->avail_out; 861245f7b51SCorentin Chary bytes = zstream->total_out - previous_out; 862245f7b51SCorentin Chary 863245f7b51SCorentin Chary tight_send_compact_size(vs, bytes); 864d1af0e05SCorentin Chary vnc_write(vs, vs->tight.zlib.buffer, bytes); 865245f7b51SCorentin Chary 866d1af0e05SCorentin Chary buffer_reset(&vs->tight.zlib); 867245f7b51SCorentin Chary 868245f7b51SCorentin Chary return bytes; 869245f7b51SCorentin Chary } 870245f7b51SCorentin Chary 871245f7b51SCorentin Chary /* 872245f7b51SCorentin Chary * Subencoding implementations. 873245f7b51SCorentin Chary */ 874245f7b51SCorentin Chary static void tight_pack24(VncState *vs, uint8_t *buf, size_t count, size_t *ret) 875245f7b51SCorentin Chary { 876245f7b51SCorentin Chary uint32_t *buf32; 877245f7b51SCorentin Chary uint32_t pix; 878245f7b51SCorentin Chary int rshift, gshift, bshift; 879245f7b51SCorentin Chary 880245f7b51SCorentin Chary buf32 = (uint32_t *)buf; 881245f7b51SCorentin Chary 882245f7b51SCorentin Chary if ((vs->clientds.flags & QEMU_BIG_ENDIAN_FLAG) == 883245f7b51SCorentin Chary (vs->ds->surface->flags & QEMU_BIG_ENDIAN_FLAG)) { 884245f7b51SCorentin Chary rshift = vs->clientds.pf.rshift; 885245f7b51SCorentin Chary gshift = vs->clientds.pf.gshift; 886245f7b51SCorentin Chary bshift = vs->clientds.pf.bshift; 887245f7b51SCorentin Chary } else { 888245f7b51SCorentin Chary rshift = 24 - vs->clientds.pf.rshift; 889245f7b51SCorentin Chary gshift = 24 - vs->clientds.pf.gshift; 890245f7b51SCorentin Chary bshift = 24 - vs->clientds.pf.bshift; 891245f7b51SCorentin Chary } 892245f7b51SCorentin Chary 893245f7b51SCorentin Chary if (ret) { 894245f7b51SCorentin Chary *ret = count * 3; 895245f7b51SCorentin Chary } 896245f7b51SCorentin Chary 897245f7b51SCorentin Chary while (count--) { 898245f7b51SCorentin Chary pix = *buf32++; 899245f7b51SCorentin Chary *buf++ = (char)(pix >> rshift); 900245f7b51SCorentin Chary *buf++ = (char)(pix >> gshift); 901245f7b51SCorentin Chary *buf++ = (char)(pix >> bshift); 902245f7b51SCorentin Chary } 903245f7b51SCorentin Chary } 904245f7b51SCorentin Chary 905efe556adSCorentin Chary static int send_full_color_rect(VncState *vs, int x, int y, int w, int h) 906245f7b51SCorentin Chary { 907245f7b51SCorentin Chary int stream = 0; 908245f7b51SCorentin Chary size_t bytes; 909245f7b51SCorentin Chary 910efe556adSCorentin Chary #ifdef CONFIG_VNC_PNG 911efe556adSCorentin Chary if (tight_can_send_png_rect(vs, w, h)) { 912efe556adSCorentin Chary return send_png_rect(vs, x, y, w, h, NULL); 913efe556adSCorentin Chary } 914efe556adSCorentin Chary #endif 915efe556adSCorentin Chary 916245f7b51SCorentin Chary vnc_write_u8(vs, stream << 4); /* no flushing, no filter */ 917245f7b51SCorentin Chary 918d1af0e05SCorentin Chary if (vs->tight.pixel24) { 919d1af0e05SCorentin Chary tight_pack24(vs, vs->tight.tight.buffer, w * h, &vs->tight.tight.offset); 920245f7b51SCorentin Chary bytes = 3; 921245f7b51SCorentin Chary } else { 922245f7b51SCorentin Chary bytes = vs->clientds.pf.bytes_per_pixel; 923245f7b51SCorentin Chary } 924245f7b51SCorentin Chary 925245f7b51SCorentin Chary bytes = tight_compress_data(vs, stream, w * h * bytes, 926d1af0e05SCorentin Chary tight_conf[vs->tight.compression].raw_zlib_level, 927245f7b51SCorentin Chary Z_DEFAULT_STRATEGY); 928245f7b51SCorentin Chary 929245f7b51SCorentin Chary return (bytes >= 0); 930245f7b51SCorentin Chary } 931245f7b51SCorentin Chary 932245f7b51SCorentin Chary static int send_solid_rect(VncState *vs) 933245f7b51SCorentin Chary { 934245f7b51SCorentin Chary size_t bytes; 935245f7b51SCorentin Chary 936245f7b51SCorentin Chary vnc_write_u8(vs, VNC_TIGHT_FILL << 4); /* no flushing, no filter */ 937245f7b51SCorentin Chary 938d1af0e05SCorentin Chary if (vs->tight.pixel24) { 939d1af0e05SCorentin Chary tight_pack24(vs, vs->tight.tight.buffer, 1, &vs->tight.tight.offset); 940245f7b51SCorentin Chary bytes = 3; 941245f7b51SCorentin Chary } else { 942245f7b51SCorentin Chary bytes = vs->clientds.pf.bytes_per_pixel; 943245f7b51SCorentin Chary } 944245f7b51SCorentin Chary 945d1af0e05SCorentin Chary vnc_write(vs, vs->tight.tight.buffer, bytes); 946245f7b51SCorentin Chary return 1; 947245f7b51SCorentin Chary } 948245f7b51SCorentin Chary 949efe556adSCorentin Chary static int send_mono_rect(VncState *vs, int x, int y, 950efe556adSCorentin Chary int w, int h, uint32_t bg, uint32_t fg) 951245f7b51SCorentin Chary { 952245f7b51SCorentin Chary size_t bytes; 953245f7b51SCorentin Chary int stream = 1; 954d1af0e05SCorentin Chary int level = tight_conf[vs->tight.compression].mono_zlib_level; 955245f7b51SCorentin Chary 956efe556adSCorentin Chary #ifdef CONFIG_VNC_PNG 957efe556adSCorentin Chary if (tight_can_send_png_rect(vs, w, h)) { 958efe556adSCorentin Chary int ret; 959efe556adSCorentin Chary int bpp = vs->clientds.pf.bytes_per_pixel * 8; 9605136a052SCorentin Chary VncPalette *palette = palette_new(2, bpp); 961efe556adSCorentin Chary 9625136a052SCorentin Chary palette_put(palette, bg); 9635136a052SCorentin Chary palette_put(palette, fg); 964efe556adSCorentin Chary ret = send_png_rect(vs, x, y, w, h, palette); 9655136a052SCorentin Chary palette_destroy(palette); 966efe556adSCorentin Chary return ret; 967efe556adSCorentin Chary } 968efe556adSCorentin Chary #endif 969efe556adSCorentin Chary 970245f7b51SCorentin Chary bytes = ((w + 7) / 8) * h; 971245f7b51SCorentin Chary 972245f7b51SCorentin Chary vnc_write_u8(vs, (stream | VNC_TIGHT_EXPLICIT_FILTER) << 4); 973245f7b51SCorentin Chary vnc_write_u8(vs, VNC_TIGHT_FILTER_PALETTE); 974245f7b51SCorentin Chary vnc_write_u8(vs, 1); 975245f7b51SCorentin Chary 976245f7b51SCorentin Chary switch(vs->clientds.pf.bytes_per_pixel) { 977245f7b51SCorentin Chary case 4: 978245f7b51SCorentin Chary { 979245f7b51SCorentin Chary uint32_t buf[2] = {bg, fg}; 980245f7b51SCorentin Chary size_t ret = sizeof (buf); 981245f7b51SCorentin Chary 982d1af0e05SCorentin Chary if (vs->tight.pixel24) { 983245f7b51SCorentin Chary tight_pack24(vs, (unsigned char*)buf, 2, &ret); 984245f7b51SCorentin Chary } 985245f7b51SCorentin Chary vnc_write(vs, buf, ret); 986245f7b51SCorentin Chary 987d1af0e05SCorentin Chary tight_encode_mono_rect32(vs->tight.tight.buffer, w, h, bg, fg); 988245f7b51SCorentin Chary break; 989245f7b51SCorentin Chary } 990245f7b51SCorentin Chary case 2: 991245f7b51SCorentin Chary vnc_write(vs, &bg, 2); 992245f7b51SCorentin Chary vnc_write(vs, &fg, 2); 993d1af0e05SCorentin Chary tight_encode_mono_rect16(vs->tight.tight.buffer, w, h, bg, fg); 994245f7b51SCorentin Chary break; 995245f7b51SCorentin Chary default: 996245f7b51SCorentin Chary vnc_write_u8(vs, bg); 997245f7b51SCorentin Chary vnc_write_u8(vs, fg); 998d1af0e05SCorentin Chary tight_encode_mono_rect8(vs->tight.tight.buffer, w, h, bg, fg); 999245f7b51SCorentin Chary break; 1000245f7b51SCorentin Chary } 1001d1af0e05SCorentin Chary vs->tight.tight.offset = bytes; 1002245f7b51SCorentin Chary 1003245f7b51SCorentin Chary bytes = tight_compress_data(vs, stream, bytes, level, Z_DEFAULT_STRATEGY); 1004245f7b51SCorentin Chary return (bytes >= 0); 1005245f7b51SCorentin Chary } 1006245f7b51SCorentin Chary 1007245f7b51SCorentin Chary struct palette_cb_priv { 1008245f7b51SCorentin Chary VncState *vs; 1009245f7b51SCorentin Chary uint8_t *header; 1010efe556adSCorentin Chary #ifdef CONFIG_VNC_PNG 1011efe556adSCorentin Chary png_colorp png_palette; 1012efe556adSCorentin Chary #endif 1013245f7b51SCorentin Chary }; 1014245f7b51SCorentin Chary 10155136a052SCorentin Chary static void write_palette(int idx, uint32_t color, void *opaque) 1016245f7b51SCorentin Chary { 1017245f7b51SCorentin Chary struct palette_cb_priv *priv = opaque; 1018245f7b51SCorentin Chary VncState *vs = priv->vs; 1019245f7b51SCorentin Chary uint32_t bytes = vs->clientds.pf.bytes_per_pixel; 1020245f7b51SCorentin Chary 1021245f7b51SCorentin Chary if (bytes == 4) { 1022245f7b51SCorentin Chary ((uint32_t*)priv->header)[idx] = color; 1023245f7b51SCorentin Chary } else { 1024245f7b51SCorentin Chary ((uint16_t*)priv->header)[idx] = color; 1025245f7b51SCorentin Chary } 1026245f7b51SCorentin Chary } 1027245f7b51SCorentin Chary 1028efe556adSCorentin Chary static bool send_gradient_rect(VncState *vs, int x, int y, int w, int h) 1029245f7b51SCorentin Chary { 1030245f7b51SCorentin Chary int stream = 3; 1031d1af0e05SCorentin Chary int level = tight_conf[vs->tight.compression].gradient_zlib_level; 1032245f7b51SCorentin Chary size_t bytes; 1033245f7b51SCorentin Chary 1034245f7b51SCorentin Chary if (vs->clientds.pf.bytes_per_pixel == 1) 1035efe556adSCorentin Chary return send_full_color_rect(vs, x, y, w, h); 1036245f7b51SCorentin Chary 1037245f7b51SCorentin Chary vnc_write_u8(vs, (stream | VNC_TIGHT_EXPLICIT_FILTER) << 4); 1038245f7b51SCorentin Chary vnc_write_u8(vs, VNC_TIGHT_FILTER_GRADIENT); 1039245f7b51SCorentin Chary 1040d1af0e05SCorentin Chary buffer_reserve(&vs->tight.gradient, w * 3 * sizeof (int)); 1041245f7b51SCorentin Chary 1042d1af0e05SCorentin Chary if (vs->tight.pixel24) { 1043d1af0e05SCorentin Chary tight_filter_gradient24(vs, vs->tight.tight.buffer, w, h); 1044245f7b51SCorentin Chary bytes = 3; 1045245f7b51SCorentin Chary } else if (vs->clientds.pf.bytes_per_pixel == 4) { 1046d1af0e05SCorentin Chary tight_filter_gradient32(vs, (uint32_t *)vs->tight.tight.buffer, w, h); 1047245f7b51SCorentin Chary bytes = 4; 1048245f7b51SCorentin Chary } else { 1049d1af0e05SCorentin Chary tight_filter_gradient16(vs, (uint16_t *)vs->tight.tight.buffer, w, h); 1050245f7b51SCorentin Chary bytes = 2; 1051245f7b51SCorentin Chary } 1052245f7b51SCorentin Chary 1053d1af0e05SCorentin Chary buffer_reset(&vs->tight.gradient); 1054245f7b51SCorentin Chary 1055245f7b51SCorentin Chary bytes = w * h * bytes; 1056d1af0e05SCorentin Chary vs->tight.tight.offset = bytes; 1057245f7b51SCorentin Chary 1058245f7b51SCorentin Chary bytes = tight_compress_data(vs, stream, bytes, 1059245f7b51SCorentin Chary level, Z_FILTERED); 1060245f7b51SCorentin Chary return (bytes >= 0); 1061245f7b51SCorentin Chary } 1062245f7b51SCorentin Chary 1063efe556adSCorentin Chary static int send_palette_rect(VncState *vs, int x, int y, 10645136a052SCorentin Chary int w, int h, VncPalette *palette) 1065245f7b51SCorentin Chary { 1066245f7b51SCorentin Chary int stream = 2; 1067d1af0e05SCorentin Chary int level = tight_conf[vs->tight.compression].idx_zlib_level; 1068245f7b51SCorentin Chary int colors; 1069245f7b51SCorentin Chary size_t bytes; 1070245f7b51SCorentin Chary 1071efe556adSCorentin Chary #ifdef CONFIG_VNC_PNG 1072efe556adSCorentin Chary if (tight_can_send_png_rect(vs, w, h)) { 1073efe556adSCorentin Chary return send_png_rect(vs, x, y, w, h, palette); 1074efe556adSCorentin Chary } 1075efe556adSCorentin Chary #endif 1076efe556adSCorentin Chary 10775136a052SCorentin Chary colors = palette_size(palette); 1078245f7b51SCorentin Chary 1079245f7b51SCorentin Chary vnc_write_u8(vs, (stream | VNC_TIGHT_EXPLICIT_FILTER) << 4); 1080245f7b51SCorentin Chary vnc_write_u8(vs, VNC_TIGHT_FILTER_PALETTE); 1081245f7b51SCorentin Chary vnc_write_u8(vs, colors - 1); 1082245f7b51SCorentin Chary 1083245f7b51SCorentin Chary switch(vs->clientds.pf.bytes_per_pixel) { 1084245f7b51SCorentin Chary case 4: 1085245f7b51SCorentin Chary { 1086245f7b51SCorentin Chary size_t old_offset, offset; 10875136a052SCorentin Chary uint32_t header[palette_size(palette)]; 1088245f7b51SCorentin Chary struct palette_cb_priv priv = { vs, (uint8_t *)header }; 1089245f7b51SCorentin Chary 1090245f7b51SCorentin Chary old_offset = vs->output.offset; 10915136a052SCorentin Chary palette_iter(palette, write_palette, &priv); 1092245f7b51SCorentin Chary vnc_write(vs, header, sizeof(header)); 1093245f7b51SCorentin Chary 1094d1af0e05SCorentin Chary if (vs->tight.pixel24) { 1095245f7b51SCorentin Chary tight_pack24(vs, vs->output.buffer + old_offset, colors, &offset); 1096245f7b51SCorentin Chary vs->output.offset = old_offset + offset; 1097245f7b51SCorentin Chary } 1098245f7b51SCorentin Chary 1099d1af0e05SCorentin Chary tight_encode_indexed_rect32(vs->tight.tight.buffer, w * h, palette); 1100245f7b51SCorentin Chary break; 1101245f7b51SCorentin Chary } 1102245f7b51SCorentin Chary case 2: 1103245f7b51SCorentin Chary { 11045136a052SCorentin Chary uint16_t header[palette_size(palette)]; 1105245f7b51SCorentin Chary struct palette_cb_priv priv = { vs, (uint8_t *)header }; 1106245f7b51SCorentin Chary 11075136a052SCorentin Chary palette_iter(palette, write_palette, &priv); 1108245f7b51SCorentin Chary vnc_write(vs, header, sizeof(header)); 1109d1af0e05SCorentin Chary tight_encode_indexed_rect16(vs->tight.tight.buffer, w * h, palette); 1110245f7b51SCorentin Chary break; 1111245f7b51SCorentin Chary } 1112245f7b51SCorentin Chary default: 1113245f7b51SCorentin Chary return -1; /* No palette for 8bits colors */ 1114245f7b51SCorentin Chary break; 1115245f7b51SCorentin Chary } 1116245f7b51SCorentin Chary bytes = w * h; 1117d1af0e05SCorentin Chary vs->tight.tight.offset = bytes; 1118245f7b51SCorentin Chary 1119245f7b51SCorentin Chary bytes = tight_compress_data(vs, stream, bytes, 1120245f7b51SCorentin Chary level, Z_DEFAULT_STRATEGY); 1121245f7b51SCorentin Chary return (bytes >= 0); 1122245f7b51SCorentin Chary } 1123245f7b51SCorentin Chary 1124efe556adSCorentin Chary #if defined(CONFIG_VNC_JPEG) || defined(CONFIG_VNC_PNG) 1125efe556adSCorentin Chary static void rgb_prepare_row24(VncState *vs, uint8_t *dst, int x, int y, 1126245f7b51SCorentin Chary int count) 1127245f7b51SCorentin Chary { 1128245f7b51SCorentin Chary VncDisplay *vd = vs->vd; 1129245f7b51SCorentin Chary uint32_t *fbptr; 1130245f7b51SCorentin Chary uint32_t pix; 1131245f7b51SCorentin Chary 1132245f7b51SCorentin Chary fbptr = (uint32_t *)(vd->server->data + y * ds_get_linesize(vs->ds) + 1133245f7b51SCorentin Chary x * ds_get_bytes_per_pixel(vs->ds)); 1134245f7b51SCorentin Chary 1135245f7b51SCorentin Chary while (count--) { 1136245f7b51SCorentin Chary pix = *fbptr++; 1137245f7b51SCorentin Chary *dst++ = (uint8_t)(pix >> vs->ds->surface->pf.rshift); 1138245f7b51SCorentin Chary *dst++ = (uint8_t)(pix >> vs->ds->surface->pf.gshift); 1139245f7b51SCorentin Chary *dst++ = (uint8_t)(pix >> vs->ds->surface->pf.bshift); 1140245f7b51SCorentin Chary } 1141245f7b51SCorentin Chary } 1142245f7b51SCorentin Chary 1143efe556adSCorentin Chary #define DEFINE_RGB_GET_ROW_FUNCTION(bpp) \ 1144245f7b51SCorentin Chary \ 1145245f7b51SCorentin Chary static void \ 1146efe556adSCorentin Chary rgb_prepare_row##bpp(VncState *vs, uint8_t *dst, \ 1147245f7b51SCorentin Chary int x, int y, int count) \ 1148245f7b51SCorentin Chary { \ 1149245f7b51SCorentin Chary VncDisplay *vd = vs->vd; \ 1150245f7b51SCorentin Chary uint##bpp##_t *fbptr; \ 1151245f7b51SCorentin Chary uint##bpp##_t pix; \ 1152245f7b51SCorentin Chary int r, g, b; \ 1153245f7b51SCorentin Chary \ 1154245f7b51SCorentin Chary fbptr = (uint##bpp##_t *) \ 1155245f7b51SCorentin Chary (vd->server->data + y * ds_get_linesize(vs->ds) + \ 1156245f7b51SCorentin Chary x * ds_get_bytes_per_pixel(vs->ds)); \ 1157245f7b51SCorentin Chary \ 1158245f7b51SCorentin Chary while (count--) { \ 1159245f7b51SCorentin Chary pix = *fbptr++; \ 1160245f7b51SCorentin Chary \ 1161245f7b51SCorentin Chary r = (int)((pix >> vs->ds->surface->pf.rshift) \ 1162245f7b51SCorentin Chary & vs->ds->surface->pf.rmax); \ 1163245f7b51SCorentin Chary g = (int)((pix >> vs->ds->surface->pf.gshift) \ 1164245f7b51SCorentin Chary & vs->ds->surface->pf.gmax); \ 1165245f7b51SCorentin Chary b = (int)((pix >> vs->ds->surface->pf.bshift) \ 1166245f7b51SCorentin Chary & vs->ds->surface->pf.bmax); \ 1167245f7b51SCorentin Chary \ 1168245f7b51SCorentin Chary *dst++ = (uint8_t)((r * 255 + vs->ds->surface->pf.rmax / 2) \ 1169245f7b51SCorentin Chary / vs->ds->surface->pf.rmax); \ 1170245f7b51SCorentin Chary *dst++ = (uint8_t)((g * 255 + vs->ds->surface->pf.gmax / 2) \ 1171245f7b51SCorentin Chary / vs->ds->surface->pf.gmax); \ 1172245f7b51SCorentin Chary *dst++ = (uint8_t)((b * 255 + vs->ds->surface->pf.bmax / 2) \ 1173245f7b51SCorentin Chary / vs->ds->surface->pf.bmax); \ 1174245f7b51SCorentin Chary } \ 1175245f7b51SCorentin Chary } 1176245f7b51SCorentin Chary 1177efe556adSCorentin Chary DEFINE_RGB_GET_ROW_FUNCTION(16) 1178efe556adSCorentin Chary DEFINE_RGB_GET_ROW_FUNCTION(32) 1179245f7b51SCorentin Chary 1180efe556adSCorentin Chary static void rgb_prepare_row(VncState *vs, uint8_t *dst, int x, int y, 1181245f7b51SCorentin Chary int count) 1182245f7b51SCorentin Chary { 11834043a013SCorentin Chary if (ds_get_bytes_per_pixel(vs->ds) == 4) { 11844043a013SCorentin Chary if (vs->ds->surface->pf.rmax == 0xFF && 11854043a013SCorentin Chary vs->ds->surface->pf.gmax == 0xFF && 11864043a013SCorentin Chary vs->ds->surface->pf.bmax == 0xFF) { 1187efe556adSCorentin Chary rgb_prepare_row24(vs, dst, x, y, count); 11884043a013SCorentin Chary } else { 1189efe556adSCorentin Chary rgb_prepare_row32(vs, dst, x, y, count); 11904043a013SCorentin Chary } 11914043a013SCorentin Chary } else { 1192efe556adSCorentin Chary rgb_prepare_row16(vs, dst, x, y, count); 1193245f7b51SCorentin Chary } 11944043a013SCorentin Chary } 1195efe556adSCorentin Chary #endif /* CONFIG_VNC_JPEG or CONFIG_VNC_PNG */ 1196245f7b51SCorentin Chary 1197245f7b51SCorentin Chary /* 1198efe556adSCorentin Chary * JPEG compression stuff. 1199efe556adSCorentin Chary */ 1200efe556adSCorentin Chary #ifdef CONFIG_VNC_JPEG 1201efe556adSCorentin Chary /* 1202245f7b51SCorentin Chary * Destination manager implementation for JPEG library. 1203245f7b51SCorentin Chary */ 1204245f7b51SCorentin Chary 1205245f7b51SCorentin Chary /* This is called once per encoding */ 1206245f7b51SCorentin Chary static void jpeg_init_destination(j_compress_ptr cinfo) 1207245f7b51SCorentin Chary { 1208245f7b51SCorentin Chary VncState *vs = cinfo->client_data; 1209d1af0e05SCorentin Chary Buffer *buffer = &vs->tight.jpeg; 1210245f7b51SCorentin Chary 1211245f7b51SCorentin Chary cinfo->dest->next_output_byte = (JOCTET *)buffer->buffer + buffer->offset; 1212245f7b51SCorentin Chary cinfo->dest->free_in_buffer = (size_t)(buffer->capacity - buffer->offset); 1213245f7b51SCorentin Chary } 1214245f7b51SCorentin Chary 1215245f7b51SCorentin Chary /* This is called when we ran out of buffer (shouldn't happen!) */ 1216245f7b51SCorentin Chary static boolean jpeg_empty_output_buffer(j_compress_ptr cinfo) 1217245f7b51SCorentin Chary { 1218245f7b51SCorentin Chary VncState *vs = cinfo->client_data; 1219d1af0e05SCorentin Chary Buffer *buffer = &vs->tight.jpeg; 1220245f7b51SCorentin Chary 1221245f7b51SCorentin Chary buffer->offset = buffer->capacity; 1222245f7b51SCorentin Chary buffer_reserve(buffer, 2048); 1223245f7b51SCorentin Chary jpeg_init_destination(cinfo); 1224245f7b51SCorentin Chary return TRUE; 1225245f7b51SCorentin Chary } 1226245f7b51SCorentin Chary 1227245f7b51SCorentin Chary /* This is called when we are done processing data */ 1228245f7b51SCorentin Chary static void jpeg_term_destination(j_compress_ptr cinfo) 1229245f7b51SCorentin Chary { 1230245f7b51SCorentin Chary VncState *vs = cinfo->client_data; 1231d1af0e05SCorentin Chary Buffer *buffer = &vs->tight.jpeg; 1232245f7b51SCorentin Chary 1233245f7b51SCorentin Chary buffer->offset = buffer->capacity - cinfo->dest->free_in_buffer; 1234245f7b51SCorentin Chary } 1235245f7b51SCorentin Chary 1236245f7b51SCorentin Chary static int send_jpeg_rect(VncState *vs, int x, int y, int w, int h, int quality) 1237245f7b51SCorentin Chary { 1238245f7b51SCorentin Chary struct jpeg_compress_struct cinfo; 1239245f7b51SCorentin Chary struct jpeg_error_mgr jerr; 1240245f7b51SCorentin Chary struct jpeg_destination_mgr manager; 1241245f7b51SCorentin Chary JSAMPROW row[1]; 1242245f7b51SCorentin Chary uint8_t *buf; 1243245f7b51SCorentin Chary int dy; 1244245f7b51SCorentin Chary 1245245f7b51SCorentin Chary if (ds_get_bytes_per_pixel(vs->ds) == 1) 1246efe556adSCorentin Chary return send_full_color_rect(vs, x, y, w, h); 1247245f7b51SCorentin Chary 1248d1af0e05SCorentin Chary buffer_reserve(&vs->tight.jpeg, 2048); 1249245f7b51SCorentin Chary 1250245f7b51SCorentin Chary cinfo.err = jpeg_std_error(&jerr); 1251245f7b51SCorentin Chary jpeg_create_compress(&cinfo); 1252245f7b51SCorentin Chary 1253245f7b51SCorentin Chary cinfo.client_data = vs; 1254245f7b51SCorentin Chary cinfo.image_width = w; 1255245f7b51SCorentin Chary cinfo.image_height = h; 1256245f7b51SCorentin Chary cinfo.input_components = 3; 1257245f7b51SCorentin Chary cinfo.in_color_space = JCS_RGB; 1258245f7b51SCorentin Chary 1259245f7b51SCorentin Chary jpeg_set_defaults(&cinfo); 1260245f7b51SCorentin Chary jpeg_set_quality(&cinfo, quality, true); 1261245f7b51SCorentin Chary 1262245f7b51SCorentin Chary manager.init_destination = jpeg_init_destination; 1263245f7b51SCorentin Chary manager.empty_output_buffer = jpeg_empty_output_buffer; 1264245f7b51SCorentin Chary manager.term_destination = jpeg_term_destination; 1265245f7b51SCorentin Chary cinfo.dest = &manager; 1266245f7b51SCorentin Chary 1267245f7b51SCorentin Chary jpeg_start_compress(&cinfo, true); 1268245f7b51SCorentin Chary 1269d9c18c24SCorentin Chary buf = qemu_malloc(w * 3); 1270d9c18c24SCorentin Chary row[0] = buf; 1271245f7b51SCorentin Chary for (dy = 0; dy < h; dy++) { 1272efe556adSCorentin Chary rgb_prepare_row(vs, buf, x, y + dy, w); 1273245f7b51SCorentin Chary jpeg_write_scanlines(&cinfo, row, 1); 1274245f7b51SCorentin Chary } 1275d9c18c24SCorentin Chary qemu_free(buf); 1276245f7b51SCorentin Chary 1277245f7b51SCorentin Chary jpeg_finish_compress(&cinfo); 1278245f7b51SCorentin Chary jpeg_destroy_compress(&cinfo); 1279245f7b51SCorentin Chary 1280245f7b51SCorentin Chary vnc_write_u8(vs, VNC_TIGHT_JPEG << 4); 1281245f7b51SCorentin Chary 1282d1af0e05SCorentin Chary tight_send_compact_size(vs, vs->tight.jpeg.offset); 1283d1af0e05SCorentin Chary vnc_write(vs, vs->tight.jpeg.buffer, vs->tight.jpeg.offset); 1284d1af0e05SCorentin Chary buffer_reset(&vs->tight.jpeg); 1285245f7b51SCorentin Chary 1286245f7b51SCorentin Chary return 1; 1287245f7b51SCorentin Chary } 1288245f7b51SCorentin Chary #endif /* CONFIG_VNC_JPEG */ 1289245f7b51SCorentin Chary 1290efe556adSCorentin Chary /* 1291efe556adSCorentin Chary * PNG compression stuff. 1292efe556adSCorentin Chary */ 1293efe556adSCorentin Chary #ifdef CONFIG_VNC_PNG 12945136a052SCorentin Chary static void write_png_palette(int idx, uint32_t pix, void *opaque) 1295efe556adSCorentin Chary { 1296efe556adSCorentin Chary struct palette_cb_priv *priv = opaque; 1297efe556adSCorentin Chary VncState *vs = priv->vs; 1298efe556adSCorentin Chary png_colorp color = &priv->png_palette[idx]; 1299efe556adSCorentin Chary 1300d1af0e05SCorentin Chary if (vs->tight.pixel24) 1301efe556adSCorentin Chary { 1302efe556adSCorentin Chary color->red = (pix >> vs->clientds.pf.rshift) & vs->clientds.pf.rmax; 1303efe556adSCorentin Chary color->green = (pix >> vs->clientds.pf.gshift) & vs->clientds.pf.gmax; 1304efe556adSCorentin Chary color->blue = (pix >> vs->clientds.pf.bshift) & vs->clientds.pf.bmax; 1305efe556adSCorentin Chary } 1306efe556adSCorentin Chary else 1307efe556adSCorentin Chary { 1308efe556adSCorentin Chary int red, green, blue; 1309efe556adSCorentin Chary 1310efe556adSCorentin Chary red = (pix >> vs->clientds.pf.rshift) & vs->clientds.pf.rmax; 1311efe556adSCorentin Chary green = (pix >> vs->clientds.pf.gshift) & vs->clientds.pf.gmax; 1312efe556adSCorentin Chary blue = (pix >> vs->clientds.pf.bshift) & vs->clientds.pf.bmax; 1313efe556adSCorentin Chary color->red = ((red * 255 + vs->clientds.pf.rmax / 2) / 1314efe556adSCorentin Chary vs->clientds.pf.rmax); 1315efe556adSCorentin Chary color->green = ((green * 255 + vs->clientds.pf.gmax / 2) / 1316efe556adSCorentin Chary vs->clientds.pf.gmax); 1317efe556adSCorentin Chary color->blue = ((blue * 255 + vs->clientds.pf.bmax / 2) / 1318efe556adSCorentin Chary vs->clientds.pf.bmax); 1319efe556adSCorentin Chary } 1320efe556adSCorentin Chary } 1321efe556adSCorentin Chary 1322efe556adSCorentin Chary static void png_write_data(png_structp png_ptr, png_bytep data, 1323efe556adSCorentin Chary png_size_t length) 1324efe556adSCorentin Chary { 1325efe556adSCorentin Chary VncState *vs = png_get_io_ptr(png_ptr); 1326efe556adSCorentin Chary 1327d1af0e05SCorentin Chary buffer_reserve(&vs->tight.png, vs->tight.png.offset + length); 1328d1af0e05SCorentin Chary memcpy(vs->tight.png.buffer + vs->tight.png.offset, data, length); 1329efe556adSCorentin Chary 1330d1af0e05SCorentin Chary vs->tight.png.offset += length; 1331efe556adSCorentin Chary } 1332efe556adSCorentin Chary 1333efe556adSCorentin Chary static void png_flush_data(png_structp png_ptr) 1334efe556adSCorentin Chary { 1335efe556adSCorentin Chary } 1336efe556adSCorentin Chary 1337efe556adSCorentin Chary static void *vnc_png_malloc(png_structp png_ptr, png_size_t size) 1338efe556adSCorentin Chary { 1339efe556adSCorentin Chary return qemu_malloc(size); 1340efe556adSCorentin Chary } 1341efe556adSCorentin Chary 1342efe556adSCorentin Chary static void vnc_png_free(png_structp png_ptr, png_voidp ptr) 1343efe556adSCorentin Chary { 1344efe556adSCorentin Chary qemu_free(ptr); 1345efe556adSCorentin Chary } 1346efe556adSCorentin Chary 1347efe556adSCorentin Chary static int send_png_rect(VncState *vs, int x, int y, int w, int h, 13485136a052SCorentin Chary VncPalette *palette) 1349efe556adSCorentin Chary { 1350efe556adSCorentin Chary png_byte color_type; 1351efe556adSCorentin Chary png_structp png_ptr; 1352efe556adSCorentin Chary png_infop info_ptr; 1353efe556adSCorentin Chary png_colorp png_palette = NULL; 1354efe556adSCorentin Chary size_t offset; 1355d1af0e05SCorentin Chary int level = tight_png_conf[vs->tight.compression].png_zlib_level; 1356d1af0e05SCorentin Chary int filters = tight_png_conf[vs->tight.compression].png_filters; 1357efe556adSCorentin Chary uint8_t *buf; 1358efe556adSCorentin Chary int dy; 1359efe556adSCorentin Chary 1360efe556adSCorentin Chary png_ptr = png_create_write_struct_2(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL, 1361efe556adSCorentin Chary NULL, vnc_png_malloc, vnc_png_free); 1362efe556adSCorentin Chary 1363efe556adSCorentin Chary if (png_ptr == NULL) 1364efe556adSCorentin Chary return -1; 1365efe556adSCorentin Chary 1366efe556adSCorentin Chary info_ptr = png_create_info_struct(png_ptr); 1367efe556adSCorentin Chary 1368efe556adSCorentin Chary if (info_ptr == NULL) { 1369efe556adSCorentin Chary png_destroy_write_struct(&png_ptr, NULL); 1370efe556adSCorentin Chary return -1; 1371efe556adSCorentin Chary } 1372efe556adSCorentin Chary 1373efe556adSCorentin Chary png_set_write_fn(png_ptr, (void *) vs, png_write_data, png_flush_data); 1374efe556adSCorentin Chary png_set_compression_level(png_ptr, level); 13753941bf6fSCorentin Chary png_set_filter(png_ptr, PNG_FILTER_TYPE_DEFAULT, filters); 1376efe556adSCorentin Chary 1377efe556adSCorentin Chary if (palette) { 1378efe556adSCorentin Chary color_type = PNG_COLOR_TYPE_PALETTE; 1379efe556adSCorentin Chary } else { 1380efe556adSCorentin Chary color_type = PNG_COLOR_TYPE_RGB; 1381efe556adSCorentin Chary } 1382efe556adSCorentin Chary 1383efe556adSCorentin Chary png_set_IHDR(png_ptr, info_ptr, w, h, 1384efe556adSCorentin Chary 8, color_type, PNG_INTERLACE_NONE, 1385efe556adSCorentin Chary PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT); 1386efe556adSCorentin Chary 1387efe556adSCorentin Chary if (color_type == PNG_COLOR_TYPE_PALETTE) { 1388efe556adSCorentin Chary struct palette_cb_priv priv; 1389efe556adSCorentin Chary 1390efe556adSCorentin Chary png_palette = png_malloc(png_ptr, sizeof(*png_palette) * 13915136a052SCorentin Chary palette_size(palette)); 1392efe556adSCorentin Chary 1393efe556adSCorentin Chary priv.vs = vs; 1394efe556adSCorentin Chary priv.png_palette = png_palette; 13955136a052SCorentin Chary palette_iter(palette, write_png_palette, &priv); 1396efe556adSCorentin Chary 13975136a052SCorentin Chary png_set_PLTE(png_ptr, info_ptr, png_palette, palette_size(palette)); 1398efe556adSCorentin Chary 1399d1af0e05SCorentin Chary offset = vs->tight.tight.offset; 1400efe556adSCorentin Chary if (vs->clientds.pf.bytes_per_pixel == 4) { 1401d1af0e05SCorentin Chary tight_encode_indexed_rect32(vs->tight.tight.buffer, w * h, palette); 1402efe556adSCorentin Chary } else { 1403d1af0e05SCorentin Chary tight_encode_indexed_rect16(vs->tight.tight.buffer, w * h, palette); 1404efe556adSCorentin Chary } 1405efe556adSCorentin Chary } 1406efe556adSCorentin Chary 1407efe556adSCorentin Chary png_write_info(png_ptr, info_ptr); 1408efe556adSCorentin Chary 1409d1af0e05SCorentin Chary buffer_reserve(&vs->tight.png, 2048); 1410efe556adSCorentin Chary buf = qemu_malloc(w * 3); 1411efe556adSCorentin Chary for (dy = 0; dy < h; dy++) 1412efe556adSCorentin Chary { 1413efe556adSCorentin Chary if (color_type == PNG_COLOR_TYPE_PALETTE) { 1414d1af0e05SCorentin Chary memcpy(buf, vs->tight.tight.buffer + (dy * w), w); 1415efe556adSCorentin Chary } else { 1416efe556adSCorentin Chary rgb_prepare_row(vs, buf, x, y + dy, w); 1417efe556adSCorentin Chary } 1418efe556adSCorentin Chary png_write_row(png_ptr, buf); 1419efe556adSCorentin Chary } 1420efe556adSCorentin Chary qemu_free(buf); 1421efe556adSCorentin Chary 1422efe556adSCorentin Chary png_write_end(png_ptr, NULL); 1423efe556adSCorentin Chary 1424efe556adSCorentin Chary if (color_type == PNG_COLOR_TYPE_PALETTE) { 1425efe556adSCorentin Chary png_free(png_ptr, png_palette); 1426efe556adSCorentin Chary } 1427efe556adSCorentin Chary 1428efe556adSCorentin Chary png_destroy_write_struct(&png_ptr, &info_ptr); 1429efe556adSCorentin Chary 1430efe556adSCorentin Chary vnc_write_u8(vs, VNC_TIGHT_PNG << 4); 1431efe556adSCorentin Chary 1432d1af0e05SCorentin Chary tight_send_compact_size(vs, vs->tight.png.offset); 1433d1af0e05SCorentin Chary vnc_write(vs, vs->tight.png.buffer, vs->tight.png.offset); 1434d1af0e05SCorentin Chary buffer_reset(&vs->tight.png); 1435efe556adSCorentin Chary return 1; 1436efe556adSCorentin Chary } 1437efe556adSCorentin Chary #endif /* CONFIG_VNC_PNG */ 1438efe556adSCorentin Chary 1439245f7b51SCorentin Chary static void vnc_tight_start(VncState *vs) 1440245f7b51SCorentin Chary { 1441d1af0e05SCorentin Chary buffer_reset(&vs->tight.tight); 1442245f7b51SCorentin Chary 1443245f7b51SCorentin Chary // make the output buffer be the zlib buffer, so we can compress it later 1444d1af0e05SCorentin Chary vs->tight.tmp = vs->output; 1445d1af0e05SCorentin Chary vs->output = vs->tight.tight; 1446245f7b51SCorentin Chary } 1447245f7b51SCorentin Chary 1448245f7b51SCorentin Chary static void vnc_tight_stop(VncState *vs) 1449245f7b51SCorentin Chary { 1450245f7b51SCorentin Chary // switch back to normal output/zlib buffers 1451d1af0e05SCorentin Chary vs->tight.tight = vs->output; 1452d1af0e05SCorentin Chary vs->output = vs->tight.tmp; 1453245f7b51SCorentin Chary } 1454245f7b51SCorentin Chary 145503817eb8SCorentin Chary static int send_sub_rect_nojpeg(VncState *vs, int x, int y, int w, int h, 145603817eb8SCorentin Chary int bg, int fg, int colors, VncPalette *palette) 145703817eb8SCorentin Chary { 145803817eb8SCorentin Chary int ret; 145903817eb8SCorentin Chary 146003817eb8SCorentin Chary if (colors == 0) { 146103817eb8SCorentin Chary if (tight_detect_smooth_image(vs, w, h)) { 146203817eb8SCorentin Chary ret = send_gradient_rect(vs, x, y, w, h); 146303817eb8SCorentin Chary } else { 146403817eb8SCorentin Chary ret = send_full_color_rect(vs, x, y, w, h); 146503817eb8SCorentin Chary } 146603817eb8SCorentin Chary } else if (colors == 1) { 146703817eb8SCorentin Chary ret = send_solid_rect(vs); 146803817eb8SCorentin Chary } else if (colors == 2) { 146903817eb8SCorentin Chary ret = send_mono_rect(vs, x, y, w, h, bg, fg); 147003817eb8SCorentin Chary } else if (colors <= 256) { 147103817eb8SCorentin Chary ret = send_palette_rect(vs, x, y, w, h, palette); 1472*d167f9bcSBlue Swirl } else { 1473*d167f9bcSBlue Swirl ret = 0; 147403817eb8SCorentin Chary } 147503817eb8SCorentin Chary return ret; 147603817eb8SCorentin Chary } 147703817eb8SCorentin Chary 147803817eb8SCorentin Chary #ifdef CONFIG_VNC_JPEG 147903817eb8SCorentin Chary static int send_sub_rect_jpeg(VncState *vs, int x, int y, int w, int h, 148003817eb8SCorentin Chary int bg, int fg, int colors, 148103817eb8SCorentin Chary VncPalette *palette) 148203817eb8SCorentin Chary { 148303817eb8SCorentin Chary int ret; 148403817eb8SCorentin Chary 148503817eb8SCorentin Chary if (colors == 0) { 148603817eb8SCorentin Chary if (tight_detect_smooth_image(vs, w, h)) { 148703817eb8SCorentin Chary int quality = tight_conf[vs->tight.quality].jpeg_quality; 148803817eb8SCorentin Chary 148903817eb8SCorentin Chary ret = send_jpeg_rect(vs, x, y, w, h, quality); 149003817eb8SCorentin Chary } else { 149103817eb8SCorentin Chary ret = send_full_color_rect(vs, x, y, w, h); 149203817eb8SCorentin Chary } 149303817eb8SCorentin Chary } else if (colors == 1) { 149403817eb8SCorentin Chary ret = send_solid_rect(vs); 149503817eb8SCorentin Chary } else if (colors == 2) { 149603817eb8SCorentin Chary ret = send_mono_rect(vs, x, y, w, h, bg, fg); 149703817eb8SCorentin Chary } else if (colors <= 256) { 149803817eb8SCorentin Chary if (colors > 96 && 149903817eb8SCorentin Chary tight_detect_smooth_image(vs, w, h)) { 150003817eb8SCorentin Chary int quality = tight_conf[vs->tight.quality].jpeg_quality; 150103817eb8SCorentin Chary 150203817eb8SCorentin Chary ret = send_jpeg_rect(vs, x, y, w, h, quality); 150303817eb8SCorentin Chary } else { 150403817eb8SCorentin Chary ret = send_palette_rect(vs, x, y, w, h, palette); 150503817eb8SCorentin Chary } 150603817eb8SCorentin Chary } 150703817eb8SCorentin Chary return ret; 150803817eb8SCorentin Chary } 150903817eb8SCorentin Chary #endif 151003817eb8SCorentin Chary 1511245f7b51SCorentin Chary static int send_sub_rect(VncState *vs, int x, int y, int w, int h) 1512245f7b51SCorentin Chary { 15135136a052SCorentin Chary VncPalette *palette = NULL; 1514245f7b51SCorentin Chary uint32_t bg = 0, fg = 0; 1515245f7b51SCorentin Chary int colors; 1516245f7b51SCorentin Chary int ret = 0; 1517245f7b51SCorentin Chary 1518d1af0e05SCorentin Chary vnc_framebuffer_update(vs, x, y, w, h, vs->tight.type); 1519245f7b51SCorentin Chary 1520245f7b51SCorentin Chary vnc_tight_start(vs); 1521245f7b51SCorentin Chary vnc_raw_send_framebuffer_update(vs, x, y, w, h); 1522245f7b51SCorentin Chary vnc_tight_stop(vs); 1523245f7b51SCorentin Chary 1524245f7b51SCorentin Chary colors = tight_fill_palette(vs, x, y, w * h, &fg, &bg, &palette); 1525245f7b51SCorentin Chary 1526245f7b51SCorentin Chary #ifdef CONFIG_VNC_JPEG 152703817eb8SCorentin Chary if (vs->tight.quality != -1) { 152803817eb8SCorentin Chary ret = send_sub_rect_jpeg(vs, x, y, w, h, bg, fg, colors, palette); 1529245f7b51SCorentin Chary } else { 153003817eb8SCorentin Chary ret = send_sub_rect_nojpeg(vs, x, y, w, h, bg, fg, colors, palette); 1531245f7b51SCorentin Chary } 1532245f7b51SCorentin Chary #else 153303817eb8SCorentin Chary ret = send_sub_rect_nojpeg(vs, x, y, w, h, bg, fg, colors, palette); 1534245f7b51SCorentin Chary #endif 153503817eb8SCorentin Chary 15365136a052SCorentin Chary palette_destroy(palette); 1537245f7b51SCorentin Chary return ret; 1538245f7b51SCorentin Chary } 1539245f7b51SCorentin Chary 1540245f7b51SCorentin Chary static int send_sub_rect_solid(VncState *vs, int x, int y, int w, int h) 1541245f7b51SCorentin Chary { 1542d1af0e05SCorentin Chary vnc_framebuffer_update(vs, x, y, w, h, vs->tight.type); 1543245f7b51SCorentin Chary 1544245f7b51SCorentin Chary vnc_tight_start(vs); 1545245f7b51SCorentin Chary vnc_raw_send_framebuffer_update(vs, x, y, w, h); 1546245f7b51SCorentin Chary vnc_tight_stop(vs); 1547245f7b51SCorentin Chary 1548245f7b51SCorentin Chary return send_solid_rect(vs); 1549245f7b51SCorentin Chary } 1550245f7b51SCorentin Chary 1551245f7b51SCorentin Chary static int send_rect_simple(VncState *vs, int x, int y, int w, int h) 1552245f7b51SCorentin Chary { 1553245f7b51SCorentin Chary int max_size, max_width; 1554245f7b51SCorentin Chary int max_sub_width, max_sub_height; 1555245f7b51SCorentin Chary int dx, dy; 1556245f7b51SCorentin Chary int rw, rh; 1557245f7b51SCorentin Chary int n = 0; 1558245f7b51SCorentin Chary 1559d1af0e05SCorentin Chary max_size = tight_conf[vs->tight.compression].max_rect_size; 1560d1af0e05SCorentin Chary max_width = tight_conf[vs->tight.compression].max_rect_width; 1561245f7b51SCorentin Chary 1562245f7b51SCorentin Chary if (w > max_width || w * h > max_size) { 1563245f7b51SCorentin Chary max_sub_width = (w > max_width) ? max_width : w; 1564245f7b51SCorentin Chary max_sub_height = max_size / max_sub_width; 1565245f7b51SCorentin Chary 1566245f7b51SCorentin Chary for (dy = 0; dy < h; dy += max_sub_height) { 1567245f7b51SCorentin Chary for (dx = 0; dx < w; dx += max_width) { 1568245f7b51SCorentin Chary rw = MIN(max_sub_width, w - dx); 1569245f7b51SCorentin Chary rh = MIN(max_sub_height, h - dy); 1570245f7b51SCorentin Chary n += send_sub_rect(vs, x+dx, y+dy, rw, rh); 1571245f7b51SCorentin Chary } 1572245f7b51SCorentin Chary } 1573245f7b51SCorentin Chary } else { 1574245f7b51SCorentin Chary n += send_sub_rect(vs, x, y, w, h); 1575245f7b51SCorentin Chary } 1576245f7b51SCorentin Chary 1577245f7b51SCorentin Chary return n; 1578245f7b51SCorentin Chary } 1579245f7b51SCorentin Chary 1580245f7b51SCorentin Chary static int find_large_solid_color_rect(VncState *vs, int x, int y, 1581245f7b51SCorentin Chary int w, int h, int max_rows) 1582245f7b51SCorentin Chary { 1583245f7b51SCorentin Chary int dx, dy, dw, dh; 1584245f7b51SCorentin Chary int n = 0; 1585245f7b51SCorentin Chary 1586245f7b51SCorentin Chary /* Try to find large solid-color areas and send them separately. */ 1587245f7b51SCorentin Chary 1588245f7b51SCorentin Chary for (dy = y; dy < y + h; dy += VNC_TIGHT_MAX_SPLIT_TILE_SIZE) { 1589245f7b51SCorentin Chary 1590245f7b51SCorentin Chary /* If a rectangle becomes too large, send its upper part now. */ 1591245f7b51SCorentin Chary 1592245f7b51SCorentin Chary if (dy - y >= max_rows) { 1593245f7b51SCorentin Chary n += send_rect_simple(vs, x, y, w, max_rows); 1594245f7b51SCorentin Chary y += max_rows; 1595245f7b51SCorentin Chary h -= max_rows; 1596245f7b51SCorentin Chary } 1597245f7b51SCorentin Chary 1598245f7b51SCorentin Chary dh = MIN(VNC_TIGHT_MAX_SPLIT_TILE_SIZE, (y + h - dy)); 1599245f7b51SCorentin Chary 1600245f7b51SCorentin Chary for (dx = x; dx < x + w; dx += VNC_TIGHT_MAX_SPLIT_TILE_SIZE) { 1601245f7b51SCorentin Chary uint32_t color_value; 1602245f7b51SCorentin Chary int x_best, y_best, w_best, h_best; 1603245f7b51SCorentin Chary 1604245f7b51SCorentin Chary dw = MIN(VNC_TIGHT_MAX_SPLIT_TILE_SIZE, (x + w - dx)); 1605245f7b51SCorentin Chary 1606245f7b51SCorentin Chary if (!check_solid_tile(vs, dx, dy, dw, dh, &color_value, false)) { 1607245f7b51SCorentin Chary continue ; 1608245f7b51SCorentin Chary } 1609245f7b51SCorentin Chary 1610245f7b51SCorentin Chary /* Get dimensions of solid-color area. */ 1611245f7b51SCorentin Chary 1612245f7b51SCorentin Chary find_best_solid_area(vs, dx, dy, w - (dx - x), h - (dy - y), 1613245f7b51SCorentin Chary color_value, &w_best, &h_best); 1614245f7b51SCorentin Chary 1615245f7b51SCorentin Chary /* Make sure a solid rectangle is large enough 1616245f7b51SCorentin Chary (or the whole rectangle is of the same color). */ 1617245f7b51SCorentin Chary 1618245f7b51SCorentin Chary if (w_best * h_best != w * h && 1619245f7b51SCorentin Chary w_best * h_best < VNC_TIGHT_MIN_SOLID_SUBRECT_SIZE) { 1620245f7b51SCorentin Chary continue; 1621245f7b51SCorentin Chary } 1622245f7b51SCorentin Chary 1623245f7b51SCorentin Chary /* Try to extend solid rectangle to maximum size. */ 1624245f7b51SCorentin Chary 1625245f7b51SCorentin Chary x_best = dx; y_best = dy; 1626245f7b51SCorentin Chary extend_solid_area(vs, x, y, w, h, color_value, 1627245f7b51SCorentin Chary &x_best, &y_best, &w_best, &h_best); 1628245f7b51SCorentin Chary 1629245f7b51SCorentin Chary /* Send rectangles at top and left to solid-color area. */ 1630245f7b51SCorentin Chary 1631245f7b51SCorentin Chary if (y_best != y) { 1632245f7b51SCorentin Chary n += send_rect_simple(vs, x, y, w, y_best-y); 1633245f7b51SCorentin Chary } 1634245f7b51SCorentin Chary if (x_best != x) { 1635efe556adSCorentin Chary n += tight_send_framebuffer_update(vs, x, y_best, 1636245f7b51SCorentin Chary x_best-x, h_best); 1637245f7b51SCorentin Chary } 1638245f7b51SCorentin Chary 1639245f7b51SCorentin Chary /* Send solid-color rectangle. */ 1640245f7b51SCorentin Chary n += send_sub_rect_solid(vs, x_best, y_best, w_best, h_best); 1641245f7b51SCorentin Chary 1642245f7b51SCorentin Chary /* Send remaining rectangles (at right and bottom). */ 1643245f7b51SCorentin Chary 1644245f7b51SCorentin Chary if (x_best + w_best != x + w) { 1645efe556adSCorentin Chary n += tight_send_framebuffer_update(vs, x_best+w_best, 1646245f7b51SCorentin Chary y_best, 1647245f7b51SCorentin Chary w-(x_best-x)-w_best, 1648245f7b51SCorentin Chary h_best); 1649245f7b51SCorentin Chary } 1650245f7b51SCorentin Chary if (y_best + h_best != y + h) { 1651efe556adSCorentin Chary n += tight_send_framebuffer_update(vs, x, y_best+h_best, 1652245f7b51SCorentin Chary w, h-(y_best-y)-h_best); 1653245f7b51SCorentin Chary } 1654245f7b51SCorentin Chary 1655245f7b51SCorentin Chary /* Return after all recursive calls are done. */ 1656245f7b51SCorentin Chary return n; 1657245f7b51SCorentin Chary } 1658245f7b51SCorentin Chary } 1659245f7b51SCorentin Chary return n + send_rect_simple(vs, x, y, w, h); 1660245f7b51SCorentin Chary } 1661245f7b51SCorentin Chary 1662efe556adSCorentin Chary static int tight_send_framebuffer_update(VncState *vs, int x, int y, 1663245f7b51SCorentin Chary int w, int h) 1664245f7b51SCorentin Chary { 1665245f7b51SCorentin Chary int max_rows; 1666245f7b51SCorentin Chary 1667245f7b51SCorentin Chary if (vs->clientds.pf.bytes_per_pixel == 4 && vs->clientds.pf.rmax == 0xFF && 1668245f7b51SCorentin Chary vs->clientds.pf.bmax == 0xFF && vs->clientds.pf.gmax == 0xFF) { 1669d1af0e05SCorentin Chary vs->tight.pixel24 = true; 1670245f7b51SCorentin Chary } else { 1671d1af0e05SCorentin Chary vs->tight.pixel24 = false; 1672245f7b51SCorentin Chary } 1673245f7b51SCorentin Chary 1674245f7b51SCorentin Chary if (w * h < VNC_TIGHT_MIN_SPLIT_RECT_SIZE) 1675245f7b51SCorentin Chary return send_rect_simple(vs, x, y, w, h); 1676245f7b51SCorentin Chary 1677245f7b51SCorentin Chary /* Calculate maximum number of rows in one non-solid rectangle. */ 1678245f7b51SCorentin Chary 1679d1af0e05SCorentin Chary max_rows = tight_conf[vs->tight.compression].max_rect_size; 1680d1af0e05SCorentin Chary max_rows /= MIN(tight_conf[vs->tight.compression].max_rect_width, w); 1681245f7b51SCorentin Chary 1682245f7b51SCorentin Chary return find_large_solid_color_rect(vs, x, y, w, h, max_rows); 1683245f7b51SCorentin Chary } 1684245f7b51SCorentin Chary 1685efe556adSCorentin Chary int vnc_tight_send_framebuffer_update(VncState *vs, int x, int y, 1686efe556adSCorentin Chary int w, int h) 1687efe556adSCorentin Chary { 1688d1af0e05SCorentin Chary vs->tight.type = VNC_ENCODING_TIGHT; 1689efe556adSCorentin Chary return tight_send_framebuffer_update(vs, x, y, w, h); 1690efe556adSCorentin Chary } 1691efe556adSCorentin Chary 1692efe556adSCorentin Chary int vnc_tight_png_send_framebuffer_update(VncState *vs, int x, int y, 1693efe556adSCorentin Chary int w, int h) 1694efe556adSCorentin Chary { 1695d1af0e05SCorentin Chary vs->tight.type = VNC_ENCODING_TIGHT_PNG; 1696efe556adSCorentin Chary return tight_send_framebuffer_update(vs, x, y, w, h); 1697efe556adSCorentin Chary } 1698efe556adSCorentin Chary 1699245f7b51SCorentin Chary void vnc_tight_clear(VncState *vs) 1700245f7b51SCorentin Chary { 1701245f7b51SCorentin Chary int i; 1702d1af0e05SCorentin Chary for (i=0; i<ARRAY_SIZE(vs->tight.stream); i++) { 1703d1af0e05SCorentin Chary if (vs->tight.stream[i].opaque) { 1704d1af0e05SCorentin Chary deflateEnd(&vs->tight.stream[i]); 1705245f7b51SCorentin Chary } 1706245f7b51SCorentin Chary } 1707245f7b51SCorentin Chary 1708d1af0e05SCorentin Chary buffer_free(&vs->tight.tight); 1709d1af0e05SCorentin Chary buffer_free(&vs->tight.zlib); 1710d1af0e05SCorentin Chary buffer_free(&vs->tight.gradient); 1711245f7b51SCorentin Chary #ifdef CONFIG_VNC_JPEG 1712d1af0e05SCorentin Chary buffer_free(&vs->tight.jpeg); 1713245f7b51SCorentin Chary #endif 1714b5469b11SCorentin Chary #ifdef CONFIG_VNC_PNG 1715b5469b11SCorentin Chary buffer_free(&vs->tight.png); 1716b5469b11SCorentin Chary #endif 1717245f7b51SCorentin Chary } 1718