diff options
Diffstat (limited to 'ui/qemu-pixman.c')
| -rw-r--r-- | ui/qemu-pixman.c | 252 |
1 files changed, 252 insertions, 0 deletions
diff --git a/ui/qemu-pixman.c b/ui/qemu-pixman.c new file mode 100644 index 00000000..4116e150 --- /dev/null +++ b/ui/qemu-pixman.c @@ -0,0 +1,252 @@ +/* + * 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-common.h" +#include "ui/console.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; +} + +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 { +#if PIXMAN_VERSION >= PIXMAN_VERSION_ENCODE(0, 21, 8) + type = PIXMAN_TYPE_RGBA; +#endif + } + } else if (rshift < gshift && gshift < bshift) { + if (rshift == 0) { + type = PIXMAN_TYPE_ABGR; + } else { +#if PIXMAN_VERSION >= PIXMAN_VERSION_ENCODE(0, 16, 0) + type = PIXMAN_TYPE_BGRA; +#endif + } + } + 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) +{ + pixman_image_t *mirror; + + mirror = pixman_image_create_bits(format, + pixman_image_get_width(image), + pixman_image_get_height(image), + NULL, + pixman_image_get_stride(image)); + return mirror; +} + +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); +} |