qemu-pixman.c (8075B)
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 "ui/console.h" 8 #include "standard-headers/drm/drm_fourcc.h" 9 10 PixelFormat qemu_pixelformat_from_pixman(pixman_format_code_t format) 11 { 12 PixelFormat pf; 13 uint8_t bpp; 14 15 bpp = pf.bits_per_pixel = PIXMAN_FORMAT_BPP(format); 16 pf.bytes_per_pixel = PIXMAN_FORMAT_BPP(format) / 8; 17 pf.depth = PIXMAN_FORMAT_DEPTH(format); 18 19 pf.abits = PIXMAN_FORMAT_A(format); 20 pf.rbits = PIXMAN_FORMAT_R(format); 21 pf.gbits = PIXMAN_FORMAT_G(format); 22 pf.bbits = PIXMAN_FORMAT_B(format); 23 24 switch (PIXMAN_FORMAT_TYPE(format)) { 25 case PIXMAN_TYPE_ARGB: 26 pf.ashift = pf.bbits + pf.gbits + pf.rbits; 27 pf.rshift = pf.bbits + pf.gbits; 28 pf.gshift = pf.bbits; 29 pf.bshift = 0; 30 break; 31 case PIXMAN_TYPE_ABGR: 32 pf.ashift = pf.rbits + pf.gbits + pf.bbits; 33 pf.bshift = pf.rbits + pf.gbits; 34 pf.gshift = pf.rbits; 35 pf.rshift = 0; 36 break; 37 case PIXMAN_TYPE_BGRA: 38 pf.bshift = bpp - pf.bbits; 39 pf.gshift = bpp - (pf.bbits + pf.gbits); 40 pf.rshift = bpp - (pf.bbits + pf.gbits + pf.rbits); 41 pf.ashift = 0; 42 break; 43 case PIXMAN_TYPE_RGBA: 44 pf.rshift = bpp - pf.rbits; 45 pf.gshift = bpp - (pf.rbits + pf.gbits); 46 pf.bshift = bpp - (pf.rbits + pf.gbits + pf.bbits); 47 pf.ashift = 0; 48 break; 49 default: 50 g_assert_not_reached(); 51 break; 52 } 53 54 pf.amax = (1 << pf.abits) - 1; 55 pf.rmax = (1 << pf.rbits) - 1; 56 pf.gmax = (1 << pf.gbits) - 1; 57 pf.bmax = (1 << pf.bbits) - 1; 58 pf.amask = pf.amax << pf.ashift; 59 pf.rmask = pf.rmax << pf.rshift; 60 pf.gmask = pf.gmax << pf.gshift; 61 pf.bmask = pf.bmax << pf.bshift; 62 63 return pf; 64 } 65 66 pixman_format_code_t qemu_default_pixman_format(int bpp, bool native_endian) 67 { 68 if (native_endian) { 69 switch (bpp) { 70 case 15: 71 return PIXMAN_x1r5g5b5; 72 case 16: 73 return PIXMAN_r5g6b5; 74 case 24: 75 return PIXMAN_r8g8b8; 76 case 32: 77 return PIXMAN_x8r8g8b8; 78 } 79 } else { 80 switch (bpp) { 81 case 24: 82 return PIXMAN_b8g8r8; 83 case 32: 84 return PIXMAN_b8g8r8x8; 85 break; 86 } 87 } 88 return 0; 89 } 90 91 /* Note: drm is little endian, pixman is native endian */ 92 static const struct { 93 uint32_t drm_format; 94 pixman_format_code_t pixman_format; 95 } drm_format_pixman_map[] = { 96 { DRM_FORMAT_RGB888, PIXMAN_LE_r8g8b8 }, 97 { DRM_FORMAT_ARGB8888, PIXMAN_LE_a8r8g8b8 }, 98 { DRM_FORMAT_XRGB8888, PIXMAN_LE_x8r8g8b8 } 99 }; 100 101 pixman_format_code_t qemu_drm_format_to_pixman(uint32_t drm_format) 102 { 103 int i; 104 105 for (i = 0; i < ARRAY_SIZE(drm_format_pixman_map); i++) { 106 if (drm_format == drm_format_pixman_map[i].drm_format) { 107 return drm_format_pixman_map[i].pixman_format; 108 } 109 } 110 return 0; 111 } 112 113 uint32_t qemu_pixman_to_drm_format(pixman_format_code_t pixman_format) 114 { 115 int i; 116 117 for (i = 0; i < ARRAY_SIZE(drm_format_pixman_map); i++) { 118 if (pixman_format == drm_format_pixman_map[i].pixman_format) { 119 return drm_format_pixman_map[i].drm_format; 120 } 121 } 122 return 0; 123 } 124 125 int qemu_pixman_get_type(int rshift, int gshift, int bshift) 126 { 127 int type = PIXMAN_TYPE_OTHER; 128 129 if (rshift > gshift && gshift > bshift) { 130 if (bshift == 0) { 131 type = PIXMAN_TYPE_ARGB; 132 } else { 133 type = PIXMAN_TYPE_RGBA; 134 } 135 } else if (rshift < gshift && gshift < bshift) { 136 if (rshift == 0) { 137 type = PIXMAN_TYPE_ABGR; 138 } else { 139 type = PIXMAN_TYPE_BGRA; 140 } 141 } 142 return type; 143 } 144 145 pixman_format_code_t qemu_pixman_get_format(PixelFormat *pf) 146 { 147 pixman_format_code_t format; 148 int type; 149 150 type = qemu_pixman_get_type(pf->rshift, pf->gshift, pf->bshift); 151 format = PIXMAN_FORMAT(pf->bits_per_pixel, type, 152 pf->abits, pf->rbits, pf->gbits, pf->bbits); 153 if (!pixman_format_supported_source(format)) { 154 return 0; 155 } 156 return format; 157 } 158 159 /* 160 * Return true for known-good pixman conversions. 161 * 162 * UIs using pixman for format conversion can hook this into 163 * DisplayChangeListenerOps->dpy_gfx_check_format 164 */ 165 bool qemu_pixman_check_format(DisplayChangeListener *dcl, 166 pixman_format_code_t format) 167 { 168 switch (format) { 169 /* 32 bpp */ 170 case PIXMAN_x8r8g8b8: 171 case PIXMAN_a8r8g8b8: 172 case PIXMAN_b8g8r8x8: 173 case PIXMAN_b8g8r8a8: 174 /* 24 bpp */ 175 case PIXMAN_r8g8b8: 176 case PIXMAN_b8g8r8: 177 /* 16 bpp */ 178 case PIXMAN_x1r5g5b5: 179 case PIXMAN_r5g6b5: 180 return true; 181 default: 182 return false; 183 } 184 } 185 186 pixman_image_t *qemu_pixman_linebuf_create(pixman_format_code_t format, 187 int width) 188 { 189 pixman_image_t *image = pixman_image_create_bits(format, width, 1, NULL, 0); 190 assert(image != NULL); 191 return image; 192 } 193 194 /* fill linebuf from framebuffer */ 195 void qemu_pixman_linebuf_fill(pixman_image_t *linebuf, pixman_image_t *fb, 196 int width, int x, int y) 197 { 198 pixman_image_composite(PIXMAN_OP_SRC, fb, NULL, linebuf, 199 x, y, 0, 0, 0, 0, width, 1); 200 } 201 202 /* copy linebuf to framebuffer */ 203 void qemu_pixman_linebuf_copy(pixman_image_t *fb, int width, int x, int y, 204 pixman_image_t *linebuf) 205 { 206 pixman_image_composite(PIXMAN_OP_SRC, linebuf, NULL, fb, 207 0, 0, 0, 0, x, y, width, 1); 208 } 209 210 pixman_image_t *qemu_pixman_mirror_create(pixman_format_code_t format, 211 pixman_image_t *image) 212 { 213 return pixman_image_create_bits(format, 214 pixman_image_get_width(image), 215 pixman_image_get_height(image), 216 NULL, 217 pixman_image_get_stride(image)); 218 } 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 pixman_color_t qemu_pixman_color(PixelFormat *pf, uint32_t color) 229 { 230 pixman_color_t c; 231 232 c.red = ((color & pf->rmask) >> pf->rshift) << (16 - pf->rbits); 233 c.green = ((color & pf->gmask) >> pf->gshift) << (16 - pf->gbits); 234 c.blue = ((color & pf->bmask) >> pf->bshift) << (16 - pf->bbits); 235 c.alpha = ((color & pf->amask) >> pf->ashift) << (16 - pf->abits); 236 return c; 237 } 238 239 pixman_image_t *qemu_pixman_glyph_from_vgafont(int height, const uint8_t *font, 240 unsigned int ch) 241 { 242 pixman_image_t *glyph; 243 uint8_t *data; 244 bool bit; 245 int x, y; 246 247 glyph = pixman_image_create_bits(PIXMAN_a8, 8, height, 248 NULL, 0); 249 data = (uint8_t *)pixman_image_get_data(glyph); 250 251 font += height * ch; 252 for (y = 0; y < height; y++, font++) { 253 for (x = 0; x < 8; x++, data++) { 254 bit = (*font) & (1 << (7-x)); 255 *data = bit ? 0xff : 0x00; 256 } 257 } 258 return glyph; 259 } 260 261 void qemu_pixman_glyph_render(pixman_image_t *glyph, 262 pixman_image_t *surface, 263 pixman_color_t *fgcol, 264 pixman_color_t *bgcol, 265 int x, int y, int cw, int ch) 266 { 267 pixman_image_t *ifg = pixman_image_create_solid_fill(fgcol); 268 pixman_image_t *ibg = pixman_image_create_solid_fill(bgcol); 269 270 pixman_image_composite(PIXMAN_OP_SRC, ibg, NULL, surface, 271 0, 0, 0, 0, 272 cw * x, ch * y, 273 cw, ch); 274 pixman_image_composite(PIXMAN_OP_OVER, ifg, glyph, surface, 275 0, 0, 0, 0, 276 cw * x, ch * y, 277 cw, ch); 278 pixman_image_unref(ifg); 279 pixman_image_unref(ibg); 280 }