1 /* 2 * This work is licensed under the terms of the GNU GPL, version 2 or later. 3 * See the COPYING file in the top-level directory. 4 */ 5 6 #include "qemu/osdep.h" 7 #include "qapi/error.h" 8 #include "ui/console.h" 9 #include "qemu/memfd.h" 10 #include "standard-headers/drm/drm_fourcc.h" 11 #include "trace.h" 12 13 PixelFormat qemu_pixelformat_from_pixman(pixman_format_code_t format) 14 { 15 PixelFormat pf; 16 uint8_t bpp; 17 18 bpp = pf.bits_per_pixel = PIXMAN_FORMAT_BPP(format); 19 pf.bytes_per_pixel = PIXMAN_FORMAT_BPP(format) / 8; 20 pf.depth = PIXMAN_FORMAT_DEPTH(format); 21 22 pf.abits = PIXMAN_FORMAT_A(format); 23 pf.rbits = PIXMAN_FORMAT_R(format); 24 pf.gbits = PIXMAN_FORMAT_G(format); 25 pf.bbits = PIXMAN_FORMAT_B(format); 26 27 switch (PIXMAN_FORMAT_TYPE(format)) { 28 case PIXMAN_TYPE_ARGB: 29 pf.ashift = pf.bbits + pf.gbits + pf.rbits; 30 pf.rshift = pf.bbits + pf.gbits; 31 pf.gshift = pf.bbits; 32 pf.bshift = 0; 33 break; 34 case PIXMAN_TYPE_ABGR: 35 pf.ashift = pf.rbits + pf.gbits + pf.bbits; 36 pf.bshift = pf.rbits + pf.gbits; 37 pf.gshift = pf.rbits; 38 pf.rshift = 0; 39 break; 40 case PIXMAN_TYPE_BGRA: 41 pf.bshift = bpp - pf.bbits; 42 pf.gshift = bpp - (pf.bbits + pf.gbits); 43 pf.rshift = bpp - (pf.bbits + pf.gbits + pf.rbits); 44 pf.ashift = 0; 45 break; 46 case PIXMAN_TYPE_RGBA: 47 pf.rshift = bpp - pf.rbits; 48 pf.gshift = bpp - (pf.rbits + pf.gbits); 49 pf.bshift = bpp - (pf.rbits + pf.gbits + pf.bbits); 50 pf.ashift = 0; 51 break; 52 default: 53 g_assert_not_reached(); 54 } 55 56 pf.amax = (1 << pf.abits) - 1; 57 pf.rmax = (1 << pf.rbits) - 1; 58 pf.gmax = (1 << pf.gbits) - 1; 59 pf.bmax = (1 << pf.bbits) - 1; 60 pf.amask = pf.amax << pf.ashift; 61 pf.rmask = pf.rmax << pf.rshift; 62 pf.gmask = pf.gmax << pf.gshift; 63 pf.bmask = pf.bmax << pf.bshift; 64 65 return pf; 66 } 67 68 pixman_format_code_t qemu_default_pixman_format(int bpp, bool native_endian) 69 { 70 if (native_endian) { 71 switch (bpp) { 72 case 15: 73 return PIXMAN_x1r5g5b5; 74 case 16: 75 return PIXMAN_r5g6b5; 76 case 24: 77 return PIXMAN_r8g8b8; 78 case 32: 79 return PIXMAN_x8r8g8b8; 80 } 81 } else { 82 switch (bpp) { 83 case 24: 84 return PIXMAN_b8g8r8; 85 case 32: 86 return PIXMAN_b8g8r8x8; 87 break; 88 } 89 } 90 return 0; 91 } 92 93 /* Note: drm is little endian, pixman is native endian */ 94 static const struct { 95 uint32_t drm_format; 96 pixman_format_code_t pixman_format; 97 } drm_format_pixman_map[] = { 98 { DRM_FORMAT_RGB888, PIXMAN_LE_r8g8b8 }, 99 { DRM_FORMAT_ARGB8888, PIXMAN_LE_a8r8g8b8 }, 100 { DRM_FORMAT_XRGB8888, PIXMAN_LE_x8r8g8b8 }, 101 { DRM_FORMAT_XBGR8888, PIXMAN_LE_x8b8g8r8 }, 102 { DRM_FORMAT_ABGR8888, PIXMAN_LE_a8b8g8r8 }, 103 }; 104 105 pixman_format_code_t qemu_drm_format_to_pixman(uint32_t drm_format) 106 { 107 int i; 108 109 for (i = 0; i < ARRAY_SIZE(drm_format_pixman_map); i++) { 110 if (drm_format == drm_format_pixman_map[i].drm_format) { 111 return drm_format_pixman_map[i].pixman_format; 112 } 113 } 114 return 0; 115 } 116 117 uint32_t qemu_pixman_to_drm_format(pixman_format_code_t pixman_format) 118 { 119 int i; 120 121 for (i = 0; i < ARRAY_SIZE(drm_format_pixman_map); i++) { 122 if (pixman_format == drm_format_pixman_map[i].pixman_format) { 123 return drm_format_pixman_map[i].drm_format; 124 } 125 } 126 return 0; 127 } 128 129 int qemu_pixman_get_type(int rshift, int gshift, int bshift) 130 { 131 int type = PIXMAN_TYPE_OTHER; 132 133 if (rshift > gshift && gshift > bshift) { 134 if (bshift == 0) { 135 type = PIXMAN_TYPE_ARGB; 136 } else { 137 type = PIXMAN_TYPE_RGBA; 138 } 139 } else if (rshift < gshift && gshift < bshift) { 140 if (rshift == 0) { 141 type = PIXMAN_TYPE_ABGR; 142 } else { 143 type = PIXMAN_TYPE_BGRA; 144 } 145 } 146 return type; 147 } 148 149 #ifdef CONFIG_PIXMAN 150 pixman_format_code_t qemu_pixman_get_format(PixelFormat *pf) 151 { 152 pixman_format_code_t format; 153 int type; 154 155 type = qemu_pixman_get_type(pf->rshift, pf->gshift, pf->bshift); 156 format = PIXMAN_FORMAT(pf->bits_per_pixel, type, 157 pf->abits, pf->rbits, pf->gbits, pf->bbits); 158 if (!pixman_format_supported_source(format)) { 159 return 0; 160 } 161 return format; 162 } 163 #endif 164 165 /* 166 * Return true for known-good pixman conversions. 167 * 168 * UIs using pixman for format conversion can hook this into 169 * DisplayChangeListenerOps->dpy_gfx_check_format 170 */ 171 bool qemu_pixman_check_format(DisplayChangeListener *dcl, 172 pixman_format_code_t format) 173 { 174 switch (format) { 175 /* 32 bpp */ 176 case PIXMAN_x8r8g8b8: 177 case PIXMAN_a8r8g8b8: 178 case PIXMAN_b8g8r8x8: 179 case PIXMAN_b8g8r8a8: 180 /* 24 bpp */ 181 case PIXMAN_r8g8b8: 182 case PIXMAN_b8g8r8: 183 /* 16 bpp */ 184 case PIXMAN_x1r5g5b5: 185 case PIXMAN_r5g6b5: 186 return true; 187 default: 188 return false; 189 } 190 } 191 192 #ifdef CONFIG_PIXMAN 193 pixman_image_t *qemu_pixman_linebuf_create(pixman_format_code_t format, 194 int width) 195 { 196 pixman_image_t *image = pixman_image_create_bits(format, width, 1, NULL, 0); 197 assert(image != NULL); 198 return image; 199 } 200 201 /* fill linebuf from framebuffer */ 202 void qemu_pixman_linebuf_fill(pixman_image_t *linebuf, pixman_image_t *fb, 203 int width, int x, int y) 204 { 205 pixman_image_composite(PIXMAN_OP_SRC, fb, NULL, linebuf, 206 x, y, 0, 0, 0, 0, width, 1); 207 } 208 209 pixman_image_t *qemu_pixman_mirror_create(pixman_format_code_t format, 210 pixman_image_t *image) 211 { 212 return pixman_image_create_bits(format, 213 pixman_image_get_width(image), 214 pixman_image_get_height(image), 215 NULL, 216 pixman_image_get_stride(image)); 217 } 218 #endif 219 220 void qemu_pixman_image_unref(pixman_image_t *image) 221 { 222 if (image == NULL) { 223 return; 224 } 225 pixman_image_unref(image); 226 } 227 228 #ifdef CONFIG_PIXMAN 229 pixman_image_t *qemu_pixman_glyph_from_vgafont(int height, const uint8_t *font, 230 unsigned int ch) 231 { 232 pixman_image_t *glyph; 233 uint8_t *data; 234 bool bit; 235 int x, y; 236 237 glyph = pixman_image_create_bits(PIXMAN_a8, 8, height, 238 NULL, 0); 239 data = (uint8_t *)pixman_image_get_data(glyph); 240 241 font += height * ch; 242 for (y = 0; y < height; y++, font++) { 243 for (x = 0; x < 8; x++, data++) { 244 bit = (*font) & (1 << (7-x)); 245 *data = bit ? 0xff : 0x00; 246 } 247 } 248 return glyph; 249 } 250 251 void qemu_pixman_glyph_render(pixman_image_t *glyph, 252 pixman_image_t *surface, 253 pixman_color_t *fgcol, 254 pixman_color_t *bgcol, 255 int x, int y, int cw, int ch) 256 { 257 pixman_image_t *ifg = pixman_image_create_solid_fill(fgcol); 258 pixman_image_t *ibg = pixman_image_create_solid_fill(bgcol); 259 260 pixman_image_composite(PIXMAN_OP_SRC, ibg, NULL, surface, 261 0, 0, 0, 0, 262 cw * x, ch * y, 263 cw, ch); 264 pixman_image_composite(PIXMAN_OP_OVER, ifg, glyph, surface, 265 0, 0, 0, 0, 266 cw * x, ch * y, 267 cw, ch); 268 pixman_image_unref(ifg); 269 pixman_image_unref(ibg); 270 } 271 #endif /* CONFIG_PIXMAN */ 272 273 static void * 274 qemu_pixman_shareable_alloc(const char *name, size_t size, 275 qemu_pixman_shareable *handle, 276 Error **errp) 277 { 278 #ifdef WIN32 279 return qemu_win32_map_alloc(size, handle, errp); 280 #else 281 return qemu_memfd_alloc(name, size, 0, handle, errp); 282 #endif 283 } 284 285 static void 286 qemu_pixman_shareable_free(qemu_pixman_shareable handle, 287 void *ptr, size_t size) 288 { 289 #ifdef WIN32 290 qemu_win32_map_free(ptr, handle, &error_warn); 291 #else 292 qemu_memfd_free(ptr, size, handle); 293 #endif 294 } 295 296 static void 297 qemu_pixman_shared_image_destroy(pixman_image_t *image, void *data) 298 { 299 qemu_pixman_shareable handle = PTR_TO_SHAREABLE(data); 300 void *ptr = pixman_image_get_data(image); 301 size_t size = pixman_image_get_height(image) * pixman_image_get_stride(image); 302 303 qemu_pixman_shareable_free(handle, ptr, size); 304 } 305 306 bool 307 qemu_pixman_image_new_shareable(pixman_image_t **image, 308 qemu_pixman_shareable *handle, 309 const char *name, 310 pixman_format_code_t format, 311 int width, 312 int height, 313 int rowstride_bytes, 314 Error **errp) 315 { 316 ERRP_GUARD(); 317 size_t size = height * rowstride_bytes; 318 void *bits = NULL; 319 320 g_return_val_if_fail(image != NULL, false); 321 g_return_val_if_fail(handle != NULL, false); 322 323 bits = qemu_pixman_shareable_alloc(name, size, handle, errp); 324 if (!bits) { 325 return false; 326 } 327 328 *image = pixman_image_create_bits(format, width, height, bits, rowstride_bytes); 329 if (!*image) { 330 error_setg(errp, "Failed to allocate image"); 331 qemu_pixman_shareable_free(*handle, bits, size); 332 return false; 333 } 334 335 pixman_image_set_destroy_function(*image, 336 qemu_pixman_shared_image_destroy, 337 SHAREABLE_TO_PTR(*handle)); 338 339 return true; 340 } 341