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qemu-e2k/ui/qemu-pixman.c

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/*
* 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);
}
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