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bc210eb163
This patch adds an x argument to qemu_pixman_linebuf_fill so it can also be used to convert a partial scanline. Then fix tight + png/jpeg encoding by passing in the x+y offset, so the data is read from the correct screen location instead of the upper left corner. Cc: 1087974@bugs.launchpad.net Cc: qemu-stable@nongnu.org Reported-by: Tim Hardeneck <thardeck@suse.de> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
81 lines
2.2 KiB
C
81 lines
2.2 KiB
C
/*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*/
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#include "qemu-pixman.h"
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int qemu_pixman_get_type(int rshift, int gshift, int bshift)
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{
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int type = PIXMAN_TYPE_OTHER;
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if (rshift > gshift && gshift > bshift) {
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if (bshift == 0) {
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type = PIXMAN_TYPE_ARGB;
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} else {
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#if PIXMAN_VERSION >= PIXMAN_VERSION_ENCODE(0, 21, 8)
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type = PIXMAN_TYPE_RGBA;
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#endif
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}
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} else if (rshift < gshift && gshift < bshift) {
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if (rshift == 0) {
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type = PIXMAN_TYPE_ABGR;
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} else {
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#if PIXMAN_VERSION >= PIXMAN_VERSION_ENCODE(0, 16, 0)
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type = PIXMAN_TYPE_BGRA;
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#endif
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}
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}
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return type;
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}
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pixman_format_code_t qemu_pixman_get_format(PixelFormat *pf)
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{
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pixman_format_code_t format;
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int type;
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type = qemu_pixman_get_type(pf->rshift, pf->gshift, pf->bshift);
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format = PIXMAN_FORMAT(pf->bits_per_pixel, type,
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pf->abits, pf->rbits, pf->gbits, pf->bbits);
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if (!pixman_format_supported_source(format)) {
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return 0;
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}
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return format;
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}
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pixman_image_t *qemu_pixman_linebuf_create(pixman_format_code_t format,
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int width)
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{
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pixman_image_t *image = pixman_image_create_bits(format, width, 1, NULL, 0);
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assert(image != NULL);
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return image;
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}
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void qemu_pixman_linebuf_fill(pixman_image_t *linebuf, pixman_image_t *fb,
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int width, int x, int y)
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{
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pixman_image_composite(PIXMAN_OP_SRC, fb, NULL, linebuf,
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x, y, 0, 0, 0, 0, width, 1);
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}
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pixman_image_t *qemu_pixman_mirror_create(pixman_format_code_t format,
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pixman_image_t *image)
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{
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pixman_image_t *mirror;
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mirror = pixman_image_create_bits(format,
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pixman_image_get_width(image),
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pixman_image_get_height(image),
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NULL,
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pixman_image_get_stride(image));
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return mirror;
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}
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void qemu_pixman_image_unref(pixman_image_t *image)
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{
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if (image == NULL) {
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return;
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}
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pixman_image_unref(image);
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}
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