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 "qemu-common.h" 8 #include "ui/console.h" 9 #include "standard-headers/drm/drm_fourcc.h" 10 11 PixelFormat qemu_pixelformat_from_pixman(pixman_format_code_t format) 12 { 13 PixelFormat pf; 14 uint8_t bpp; 15 16 bpp = pf.bits_per_pixel = PIXMAN_FORMAT_BPP(format); 17 pf.bytes_per_pixel = PIXMAN_FORMAT_BPP(format) / 8; 18 pf.depth = PIXMAN_FORMAT_DEPTH(format); 19 20 pf.abits = PIXMAN_FORMAT_A(format); 21 pf.rbits = PIXMAN_FORMAT_R(format); 22 pf.gbits = PIXMAN_FORMAT_G(format); 23 pf.bbits = PIXMAN_FORMAT_B(format); 24 25 switch (PIXMAN_FORMAT_TYPE(format)) { 26 case PIXMAN_TYPE_ARGB: 27 pf.ashift = pf.bbits + pf.gbits + pf.rbits; 28 pf.rshift = pf.bbits + pf.gbits; 29 pf.gshift = pf.bbits; 30 pf.bshift = 0; 31 break; 32 case PIXMAN_TYPE_ABGR: 33 pf.ashift = pf.rbits + pf.gbits + pf.bbits; 34 pf.bshift = pf.rbits + pf.gbits; 35 pf.gshift = pf.rbits; 36 pf.rshift = 0; 37 break; 38 case PIXMAN_TYPE_BGRA: 39 pf.bshift = bpp - pf.bbits; 40 pf.gshift = bpp - (pf.bbits + pf.gbits); 41 pf.rshift = bpp - (pf.bbits + pf.gbits + pf.rbits); 42 pf.ashift = 0; 43 break; 44 case PIXMAN_TYPE_RGBA: 45 pf.rshift = bpp - pf.rbits; 46 pf.gshift = bpp - (pf.rbits + pf.gbits); 47 pf.bshift = bpp - (pf.rbits + pf.gbits + pf.bbits); 48 pf.ashift = 0; 49 break; 50 default: 51 g_assert_not_reached(); 52 break; 53 } 54 55 pf.amax = (1 << pf.abits) - 1; 56 pf.rmax = (1 << pf.rbits) - 1; 57 pf.gmax = (1 << pf.gbits) - 1; 58 pf.bmax = (1 << pf.bbits) - 1; 59 pf.amask = pf.amax << pf.ashift; 60 pf.rmask = pf.rmax << pf.rshift; 61 pf.gmask = pf.gmax << pf.gshift; 62 pf.bmask = pf.bmax << pf.bshift; 63 64 return pf; 65 } 66 67 pixman_format_code_t qemu_default_pixman_format(int bpp, bool native_endian) 68 { 69 if (native_endian) { 70 switch (bpp) { 71 case 15: 72 return PIXMAN_x1r5g5b5; 73 case 16: 74 return PIXMAN_r5g6b5; 75 case 24: 76 return PIXMAN_r8g8b8; 77 case 32: 78 return PIXMAN_x8r8g8b8; 79 } 80 } else { 81 switch (bpp) { 82 case 24: 83 return PIXMAN_b8g8r8; 84 case 32: 85 return PIXMAN_b8g8r8x8; 86 break; 87 } 88 } 89 return 0; 90 } 91 92 /* Note: drm is little endian, pixman is native endian */ 93 pixman_format_code_t qemu_drm_format_to_pixman(uint32_t drm_format) 94 { 95 static const struct { 96 uint32_t drm_format; 97 pixman_format_code_t pixman; 98 } map[] = { 99 { DRM_FORMAT_RGB888, PIXMAN_LE_r8g8b8 }, 100 { DRM_FORMAT_ARGB8888, PIXMAN_LE_a8r8g8b8 }, 101 { DRM_FORMAT_XRGB8888, PIXMAN_LE_x8r8g8b8 } 102 }; 103 int i; 104 105 for (i = 0; i < ARRAY_SIZE(map); i++) { 106 if (drm_format == map[i].drm_format) { 107 return map[i].pixman; 108 } 109 } 110 return 0; 111 } 112 113 int qemu_pixman_get_type(int rshift, int gshift, int bshift) 114 { 115 int type = PIXMAN_TYPE_OTHER; 116 117 if (rshift > gshift && gshift > bshift) { 118 if (bshift == 0) { 119 type = PIXMAN_TYPE_ARGB; 120 } else { 121 type = PIXMAN_TYPE_RGBA; 122 } 123 } else if (rshift < gshift && gshift < bshift) { 124 if (rshift == 0) { 125 type = PIXMAN_TYPE_ABGR; 126 } else { 127 type = PIXMAN_TYPE_BGRA; 128 } 129 } 130 return type; 131 } 132 133 pixman_format_code_t qemu_pixman_get_format(PixelFormat *pf) 134 { 135 pixman_format_code_t format; 136 int type; 137 138 type = qemu_pixman_get_type(pf->rshift, pf->gshift, pf->bshift); 139 format = PIXMAN_FORMAT(pf->bits_per_pixel, type, 140 pf->abits, pf->rbits, pf->gbits, pf->bbits); 141 if (!pixman_format_supported_source(format)) { 142 return 0; 143 } 144 return format; 145 } 146 147 /* 148 * Return true for known-good pixman conversions. 149 * 150 * UIs using pixman for format conversion can hook this into 151 * DisplayChangeListenerOps->dpy_gfx_check_format 152 */ 153 bool qemu_pixman_check_format(DisplayChangeListener *dcl, 154 pixman_format_code_t format) 155 { 156 switch (format) { 157 /* 32 bpp */ 158 case PIXMAN_x8r8g8b8: 159 case PIXMAN_a8r8g8b8: 160 case PIXMAN_b8g8r8x8: 161 case PIXMAN_b8g8r8a8: 162 /* 24 bpp */ 163 case PIXMAN_r8g8b8: 164 case PIXMAN_b8g8r8: 165 /* 16 bpp */ 166 case PIXMAN_x1r5g5b5: 167 case PIXMAN_r5g6b5: 168 return true; 169 default: 170 return false; 171 } 172 } 173 174 pixman_image_t *qemu_pixman_linebuf_create(pixman_format_code_t format, 175 int width) 176 { 177 pixman_image_t *image = pixman_image_create_bits(format, width, 1, NULL, 0); 178 assert(image != NULL); 179 return image; 180 } 181 182 /* fill linebuf from framebuffer */ 183 void qemu_pixman_linebuf_fill(pixman_image_t *linebuf, pixman_image_t *fb, 184 int width, int x, int y) 185 { 186 pixman_image_composite(PIXMAN_OP_SRC, fb, NULL, linebuf, 187 x, y, 0, 0, 0, 0, width, 1); 188 } 189 190 /* copy linebuf to framebuffer */ 191 void qemu_pixman_linebuf_copy(pixman_image_t *fb, int width, int x, int y, 192 pixman_image_t *linebuf) 193 { 194 pixman_image_composite(PIXMAN_OP_SRC, linebuf, NULL, fb, 195 0, 0, 0, 0, x, y, width, 1); 196 } 197 198 pixman_image_t *qemu_pixman_mirror_create(pixman_format_code_t format, 199 pixman_image_t *image) 200 { 201 return pixman_image_create_bits(format, 202 pixman_image_get_width(image), 203 pixman_image_get_height(image), 204 NULL, 205 pixman_image_get_stride(image)); 206 } 207 208 void qemu_pixman_image_unref(pixman_image_t *image) 209 { 210 if (image == NULL) { 211 return; 212 } 213 pixman_image_unref(image); 214 } 215 216 pixman_color_t qemu_pixman_color(PixelFormat *pf, uint32_t color) 217 { 218 pixman_color_t c; 219 220 c.red = ((color & pf->rmask) >> pf->rshift) << (16 - pf->rbits); 221 c.green = ((color & pf->gmask) >> pf->gshift) << (16 - pf->gbits); 222 c.blue = ((color & pf->bmask) >> pf->bshift) << (16 - pf->bbits); 223 c.alpha = ((color & pf->amask) >> pf->ashift) << (16 - pf->abits); 224 return c; 225 } 226 227 pixman_image_t *qemu_pixman_glyph_from_vgafont(int height, const uint8_t *font, 228 unsigned int ch) 229 { 230 pixman_image_t *glyph; 231 uint8_t *data; 232 bool bit; 233 int x, y; 234 235 glyph = pixman_image_create_bits(PIXMAN_a8, 8, height, 236 NULL, 0); 237 data = (uint8_t *)pixman_image_get_data(glyph); 238 239 font += height * ch; 240 for (y = 0; y < height; y++, font++) { 241 for (x = 0; x < 8; x++, data++) { 242 bit = (*font) & (1 << (7-x)); 243 *data = bit ? 0xff : 0x00; 244 } 245 } 246 return glyph; 247 } 248 249 void qemu_pixman_glyph_render(pixman_image_t *glyph, 250 pixman_image_t *surface, 251 pixman_color_t *fgcol, 252 pixman_color_t *bgcol, 253 int x, int y, int cw, int ch) 254 { 255 pixman_image_t *ifg = pixman_image_create_solid_fill(fgcol); 256 pixman_image_t *ibg = pixman_image_create_solid_fill(bgcol); 257 258 pixman_image_composite(PIXMAN_OP_SRC, ibg, NULL, surface, 259 0, 0, 0, 0, 260 cw * x, ch * y, 261 cw, ch); 262 pixman_image_composite(PIXMAN_OP_OVER, ifg, glyph, surface, 263 0, 0, 0, 0, 264 cw * x, ch * y, 265 cw, ch); 266 pixman_image_unref(ifg); 267 pixman_image_unref(ibg); 268 } 269