Commit d2ec7e24 authored by Gerd Hoffmann's avatar Gerd Hoffmann
Browse files

pixman: helper functions



Add some helper functions which will be put
into use by following patches.
Signed-off-by: default avatarGerd Hoffmann <kraxel@redhat.com>
parent e2134eb9
......@@ -65,6 +65,7 @@ common-obj-y = $(block-obj-y) blockdev.o blockdev-nbd.o block/
common-obj-y += net.o net/
common-obj-y += qom/
common-obj-y += readline.o console.o cursor.o
common-obj-y += qemu-pixman.o
common-obj-y += $(oslib-obj-y)
common-obj-$(CONFIG_WIN32) += os-win32.o
common-obj-$(CONFIG_POSIX) += os-posix.o
......
#include "qemu-pixman.h"
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 {
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;
}
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;
}
void qemu_pixman_linebuf_fill(pixman_image_t *linebuf, pixman_image_t *fb,
int width, int y)
{
pixman_image_composite(PIXMAN_OP_SRC, fb, NULL, linebuf,
0, y, 0, 0, 0, 0, width, 1);
}
void qemu_pixman_image_unref(pixman_image_t *image)
{
if (image == NULL) {
return;
}
pixman_image_unref(image);
}
#ifndef QEMU_PIXMAN_H
#define QEMU_PIXMAN_H
#include <pixman.h>
#include "console.h"
/*
* pixman image formats are defined to be native endian,
* that means host byte order on qemu. So we go define
* fixed formats here for cases where it is needed, like
* feeding libjpeg / libpng and writing screenshots.
*/
#ifdef HOST_WORDS_BIGENDIAN
# define PIXMAN_BE_r8g8b8 PIXMAN_r8g8b8
#else
# define PIXMAN_BE_r8g8b8 PIXMAN_b8g8r8
#endif
/* -------------------------------------------------------------------- */
int qemu_pixman_get_type(int rshift, int gshift, int bshift);
pixman_format_code_t qemu_pixman_get_format(PixelFormat *pf);
pixman_image_t *qemu_pixman_linebuf_create(pixman_format_code_t format,
int width);
void qemu_pixman_linebuf_fill(pixman_image_t *linebuf, pixman_image_t *fb,
int width, int y);
void qemu_pixman_image_unref(pixman_image_t *image);
#endif /* QEMU_PIXMAN_H */
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