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 #include "trace.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 static const struct { 94 uint32_t drm_format; 95 pixman_format_code_t pixman_format; 96 } drm_format_pixman_map[] = { 97 { DRM_FORMAT_RGB888, PIXMAN_LE_r8g8b8 }, 98 { DRM_FORMAT_ARGB8888, PIXMAN_LE_a8r8g8b8 }, 99 { DRM_FORMAT_XRGB8888, PIXMAN_LE_x8r8g8b8 }, 100 { DRM_FORMAT_XBGR8888, PIXMAN_LE_x8b8g8r8 }, 101 { DRM_FORMAT_ABGR8888, PIXMAN_LE_a8b8g8r8 }, 102 }; 103 104 pixman_format_code_t qemu_drm_format_to_pixman(uint32_t drm_format) 105 { 106 int i; 107 108 for (i = 0; i < ARRAY_SIZE(drm_format_pixman_map); i++) { 109 if (drm_format == drm_format_pixman_map[i].drm_format) { 110 return drm_format_pixman_map[i].pixman_format; 111 } 112 } 113 return 0; 114 } 115 116 uint32_t qemu_pixman_to_drm_format(pixman_format_code_t pixman_format) 117 { 118 int i; 119 120 for (i = 0; i < ARRAY_SIZE(drm_format_pixman_map); i++) { 121 if (pixman_format == drm_format_pixman_map[i].pixman_format) { 122 return drm_format_pixman_map[i].drm_format; 123 } 124 } 125 return 0; 126 } 127 128 int qemu_pixman_get_type(int rshift, int gshift, int bshift) 129 { 130 int type = PIXMAN_TYPE_OTHER; 131 132 if (rshift > gshift && gshift > bshift) { 133 if (bshift == 0) { 134 type = PIXMAN_TYPE_ARGB; 135 } else { 136 type = PIXMAN_TYPE_RGBA; 137 } 138 } else if (rshift < gshift && gshift < bshift) { 139 if (rshift == 0) { 140 type = PIXMAN_TYPE_ABGR; 141 } else { 142 type = PIXMAN_TYPE_BGRA; 143 } 144 } 145 return type; 146 } 147 148 pixman_format_code_t qemu_pixman_get_format(PixelFormat *pf) 149 { 150 pixman_format_code_t format; 151 int type; 152 153 type = qemu_pixman_get_type(pf->rshift, pf->gshift, pf->bshift); 154 format = PIXMAN_FORMAT(pf->bits_per_pixel, type, 155 pf->abits, pf->rbits, pf->gbits, pf->bbits); 156 if (!pixman_format_supported_source(format)) { 157 return 0; 158 } 159 return format; 160 } 161 162 /* 163 * Return true for known-good pixman conversions. 164 * 165 * UIs using pixman for format conversion can hook this into 166 * DisplayChangeListenerOps->dpy_gfx_check_format 167 */ 168 bool qemu_pixman_check_format(DisplayChangeListener *dcl, 169 pixman_format_code_t format) 170 { 171 switch (format) { 172 /* 32 bpp */ 173 case PIXMAN_x8r8g8b8: 174 case PIXMAN_a8r8g8b8: 175 case PIXMAN_b8g8r8x8: 176 case PIXMAN_b8g8r8a8: 177 /* 24 bpp */ 178 case PIXMAN_r8g8b8: 179 case PIXMAN_b8g8r8: 180 /* 16 bpp */ 181 case PIXMAN_x1r5g5b5: 182 case PIXMAN_r5g6b5: 183 return true; 184 default: 185 return false; 186 } 187 } 188 189 pixman_image_t *qemu_pixman_linebuf_create(pixman_format_code_t format, 190 int width) 191 { 192 pixman_image_t *image = pixman_image_create_bits(format, width, 1, NULL, 0); 193 assert(image != NULL); 194 return image; 195 } 196 197 /* fill linebuf from framebuffer */ 198 void qemu_pixman_linebuf_fill(pixman_image_t *linebuf, pixman_image_t *fb, 199 int width, int x, int y) 200 { 201 pixman_image_composite(PIXMAN_OP_SRC, fb, NULL, linebuf, 202 x, y, 0, 0, 0, 0, width, 1); 203 } 204 205 pixman_image_t *qemu_pixman_mirror_create(pixman_format_code_t format, 206 pixman_image_t *image) 207 { 208 return pixman_image_create_bits(format, 209 pixman_image_get_width(image), 210 pixman_image_get_height(image), 211 NULL, 212 pixman_image_get_stride(image)); 213 } 214 215 void qemu_pixman_image_unref(pixman_image_t *image) 216 { 217 if (image == NULL) { 218 return; 219 } 220 pixman_image_unref(image); 221 } 222 223 pixman_image_t *qemu_pixman_glyph_from_vgafont(int height, const uint8_t *font, 224 unsigned int ch) 225 { 226 pixman_image_t *glyph; 227 uint8_t *data; 228 bool bit; 229 int x, y; 230 231 glyph = pixman_image_create_bits(PIXMAN_a8, 8, height, 232 NULL, 0); 233 data = (uint8_t *)pixman_image_get_data(glyph); 234 235 font += height * ch; 236 for (y = 0; y < height; y++, font++) { 237 for (x = 0; x < 8; x++, data++) { 238 bit = (*font) & (1 << (7-x)); 239 *data = bit ? 0xff : 0x00; 240 } 241 } 242 return glyph; 243 } 244 245 void qemu_pixman_glyph_render(pixman_image_t *glyph, 246 pixman_image_t *surface, 247 pixman_color_t *fgcol, 248 pixman_color_t *bgcol, 249 int x, int y, int cw, int ch) 250 { 251 pixman_image_t *ifg = pixman_image_create_solid_fill(fgcol); 252 pixman_image_t *ibg = pixman_image_create_solid_fill(bgcol); 253 254 pixman_image_composite(PIXMAN_OP_SRC, ibg, NULL, surface, 255 0, 0, 0, 0, 256 cw * x, ch * y, 257 cw, ch); 258 pixman_image_composite(PIXMAN_OP_OVER, ifg, glyph, surface, 259 0, 0, 0, 0, 260 cw * x, ch * y, 261 cw, ch); 262 pixman_image_unref(ifg); 263 pixman_image_unref(ibg); 264 } 265