| /* |
| * This work is licensed under the terms of the GNU GPL, version 2 or later. |
| * See the COPYING file in the top-level directory. |
| */ |
| |
| #include "qemu/osdep.h" |
| #include "ui/console.h" |
| #include "standard-headers/drm/drm_fourcc.h" |
| |
| PixelFormat qemu_pixelformat_from_pixman(pixman_format_code_t format) |
| { |
| PixelFormat pf; |
| uint8_t bpp; |
| |
| bpp = pf.bits_per_pixel = PIXMAN_FORMAT_BPP(format); |
| pf.bytes_per_pixel = PIXMAN_FORMAT_BPP(format) / 8; |
| pf.depth = PIXMAN_FORMAT_DEPTH(format); |
| |
| pf.abits = PIXMAN_FORMAT_A(format); |
| pf.rbits = PIXMAN_FORMAT_R(format); |
| pf.gbits = PIXMAN_FORMAT_G(format); |
| pf.bbits = PIXMAN_FORMAT_B(format); |
| |
| switch (PIXMAN_FORMAT_TYPE(format)) { |
| case PIXMAN_TYPE_ARGB: |
| pf.ashift = pf.bbits + pf.gbits + pf.rbits; |
| pf.rshift = pf.bbits + pf.gbits; |
| pf.gshift = pf.bbits; |
| pf.bshift = 0; |
| break; |
| case PIXMAN_TYPE_ABGR: |
| pf.ashift = pf.rbits + pf.gbits + pf.bbits; |
| pf.bshift = pf.rbits + pf.gbits; |
| pf.gshift = pf.rbits; |
| pf.rshift = 0; |
| break; |
| case PIXMAN_TYPE_BGRA: |
| pf.bshift = bpp - pf.bbits; |
| pf.gshift = bpp - (pf.bbits + pf.gbits); |
| pf.rshift = bpp - (pf.bbits + pf.gbits + pf.rbits); |
| pf.ashift = 0; |
| break; |
| case PIXMAN_TYPE_RGBA: |
| pf.rshift = bpp - pf.rbits; |
| pf.gshift = bpp - (pf.rbits + pf.gbits); |
| pf.bshift = bpp - (pf.rbits + pf.gbits + pf.bbits); |
| pf.ashift = 0; |
| break; |
| default: |
| g_assert_not_reached(); |
| break; |
| } |
| |
| pf.amax = (1 << pf.abits) - 1; |
| pf.rmax = (1 << pf.rbits) - 1; |
| pf.gmax = (1 << pf.gbits) - 1; |
| pf.bmax = (1 << pf.bbits) - 1; |
| pf.amask = pf.amax << pf.ashift; |
| pf.rmask = pf.rmax << pf.rshift; |
| pf.gmask = pf.gmax << pf.gshift; |
| pf.bmask = pf.bmax << pf.bshift; |
| |
| return pf; |
| } |
| |
| pixman_format_code_t qemu_default_pixman_format(int bpp, bool native_endian) |
| { |
| if (native_endian) { |
| switch (bpp) { |
| case 15: |
| return PIXMAN_x1r5g5b5; |
| case 16: |
| return PIXMAN_r5g6b5; |
| case 24: |
| return PIXMAN_r8g8b8; |
| case 32: |
| return PIXMAN_x8r8g8b8; |
| } |
| } else { |
| switch (bpp) { |
| case 24: |
| return PIXMAN_b8g8r8; |
| case 32: |
| return PIXMAN_b8g8r8x8; |
| break; |
| } |
| } |
| return 0; |
| } |
| |
| /* Note: drm is little endian, pixman is native endian */ |
| static const struct { |
| uint32_t drm_format; |
| pixman_format_code_t pixman_format; |
| } drm_format_pixman_map[] = { |
| { DRM_FORMAT_RGB888, PIXMAN_LE_r8g8b8 }, |
| { DRM_FORMAT_ARGB8888, PIXMAN_LE_a8r8g8b8 }, |
| { DRM_FORMAT_XRGB8888, PIXMAN_LE_x8r8g8b8 } |
| }; |
| |
| pixman_format_code_t qemu_drm_format_to_pixman(uint32_t drm_format) |
| { |
| int i; |
| |
| for (i = 0; i < ARRAY_SIZE(drm_format_pixman_map); i++) { |
| if (drm_format == drm_format_pixman_map[i].drm_format) { |
| return drm_format_pixman_map[i].pixman_format; |
| } |
| } |
| return 0; |
| } |
| |
| uint32_t qemu_pixman_to_drm_format(pixman_format_code_t pixman_format) |
| { |
| int i; |
| |
| for (i = 0; i < ARRAY_SIZE(drm_format_pixman_map); i++) { |
| if (pixman_format == drm_format_pixman_map[i].pixman_format) { |
| return drm_format_pixman_map[i].drm_format; |
| } |
| } |
| return 0; |
| } |
| |
| int qemu_pixman_get_type(int rshift, int gshift, int bshift) |
| { |
| int type = PIXMAN_TYPE_OTHER; |
| |
| if (rshift > gshift && gshift > bshift) { |
| if (bshift == 0) { |
| type = PIXMAN_TYPE_ARGB; |
| } else { |
| type = PIXMAN_TYPE_RGBA; |
| } |
| } else if (rshift < gshift && gshift < bshift) { |
| if (rshift == 0) { |
| type = PIXMAN_TYPE_ABGR; |
| } else { |
| type = PIXMAN_TYPE_BGRA; |
| } |
| } |
| return type; |
| } |
| |
| pixman_format_code_t qemu_pixman_get_format(PixelFormat *pf) |
| { |
| pixman_format_code_t format; |
| int type; |
| |
| type = qemu_pixman_get_type(pf->rshift, pf->gshift, pf->bshift); |
| format = PIXMAN_FORMAT(pf->bits_per_pixel, type, |
| pf->abits, pf->rbits, pf->gbits, pf->bbits); |
| if (!pixman_format_supported_source(format)) { |
| return 0; |
| } |
| return format; |
| } |
| |
| /* |
| * Return true for known-good pixman conversions. |
| * |
| * UIs using pixman for format conversion can hook this into |
| * DisplayChangeListenerOps->dpy_gfx_check_format |
| */ |
| bool qemu_pixman_check_format(DisplayChangeListener *dcl, |
| pixman_format_code_t format) |
| { |
| switch (format) { |
| /* 32 bpp */ |
| case PIXMAN_x8r8g8b8: |
| case PIXMAN_a8r8g8b8: |
| case PIXMAN_b8g8r8x8: |
| case PIXMAN_b8g8r8a8: |
| /* 24 bpp */ |
| case PIXMAN_r8g8b8: |
| case PIXMAN_b8g8r8: |
| /* 16 bpp */ |
| case PIXMAN_x1r5g5b5: |
| case PIXMAN_r5g6b5: |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| pixman_image_t *qemu_pixman_linebuf_create(pixman_format_code_t format, |
| int width) |
| { |
| pixman_image_t *image = pixman_image_create_bits(format, width, 1, NULL, 0); |
| assert(image != NULL); |
| return image; |
| } |
| |
| /* fill linebuf from framebuffer */ |
| void qemu_pixman_linebuf_fill(pixman_image_t *linebuf, pixman_image_t *fb, |
| int width, int x, int y) |
| { |
| pixman_image_composite(PIXMAN_OP_SRC, fb, NULL, linebuf, |
| x, y, 0, 0, 0, 0, width, 1); |
| } |
| |
| /* copy linebuf to framebuffer */ |
| void qemu_pixman_linebuf_copy(pixman_image_t *fb, int width, int x, int y, |
| pixman_image_t *linebuf) |
| { |
| pixman_image_composite(PIXMAN_OP_SRC, linebuf, NULL, fb, |
| 0, 0, 0, 0, x, y, width, 1); |
| } |
| |
| pixman_image_t *qemu_pixman_mirror_create(pixman_format_code_t format, |
| pixman_image_t *image) |
| { |
| return pixman_image_create_bits(format, |
| pixman_image_get_width(image), |
| pixman_image_get_height(image), |
| NULL, |
| pixman_image_get_stride(image)); |
| } |
| |
| void qemu_pixman_image_unref(pixman_image_t *image) |
| { |
| if (image == NULL) { |
| return; |
| } |
| pixman_image_unref(image); |
| } |
| |
| pixman_color_t qemu_pixman_color(PixelFormat *pf, uint32_t color) |
| { |
| pixman_color_t c; |
| |
| c.red = ((color & pf->rmask) >> pf->rshift) << (16 - pf->rbits); |
| c.green = ((color & pf->gmask) >> pf->gshift) << (16 - pf->gbits); |
| c.blue = ((color & pf->bmask) >> pf->bshift) << (16 - pf->bbits); |
| c.alpha = ((color & pf->amask) >> pf->ashift) << (16 - pf->abits); |
| return c; |
| } |
| |
| pixman_image_t *qemu_pixman_glyph_from_vgafont(int height, const uint8_t *font, |
| unsigned int ch) |
| { |
| pixman_image_t *glyph; |
| uint8_t *data; |
| bool bit; |
| int x, y; |
| |
| glyph = pixman_image_create_bits(PIXMAN_a8, 8, height, |
| NULL, 0); |
| data = (uint8_t *)pixman_image_get_data(glyph); |
| |
| font += height * ch; |
| for (y = 0; y < height; y++, font++) { |
| for (x = 0; x < 8; x++, data++) { |
| bit = (*font) & (1 << (7-x)); |
| *data = bit ? 0xff : 0x00; |
| } |
| } |
| return glyph; |
| } |
| |
| void qemu_pixman_glyph_render(pixman_image_t *glyph, |
| pixman_image_t *surface, |
| pixman_color_t *fgcol, |
| pixman_color_t *bgcol, |
| int x, int y, int cw, int ch) |
| { |
| pixman_image_t *ifg = pixman_image_create_solid_fill(fgcol); |
| pixman_image_t *ibg = pixman_image_create_solid_fill(bgcol); |
| |
| pixman_image_composite(PIXMAN_OP_SRC, ibg, NULL, surface, |
| 0, 0, 0, 0, |
| cw * x, ch * y, |
| cw, ch); |
| pixman_image_composite(PIXMAN_OP_OVER, ifg, glyph, surface, |
| 0, 0, 0, 0, |
| cw * x, ch * y, |
| cw, ch); |
| pixman_image_unref(ifg); |
| pixman_image_unref(ibg); |
| } |
