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pixman: fix vnc tight png/jpeg support 

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>
This commit is contained in:
Gerd Hoffmann 2012-12-14 07:54:24 +00:00 committed by Blue Swirl
parent f27b2e1dfe
commit bc210eb163
5 changed files with 7 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
hw/vga.c
View File

@ -2413,7 +2413,7 @@ void ppm_save(const char *filename, struct DisplaySurface *ds, Error **errp)
}
linebuf = qemu_pixman_linebuf_create(PIXMAN_BE_r8g8b8, width);
for (y = 0; y < height; y++) {
qemu_pixman_linebuf_fill(linebuf, ds->image, width, y);
qemu_pixman_linebuf_fill(linebuf, ds->image, width, 0, y);
clearerr(f);
ret = fwrite(pixman_image_get_data(linebuf), 1,
pixman_image_get_stride(linebuf), f);

4
qemu-pixman.c
View File

@ -52,10 +52,10 @@ pixman_image_t *qemu_pixman_linebuf_create(pixman_format_code_t format,
}
void qemu_pixman_linebuf_fill(pixman_image_t *linebuf, pixman_image_t *fb,
int width, int y)
int width, int x, int y)
{
pixman_image_composite(PIXMAN_OP_SRC, fb, NULL, linebuf,
0, y, 0, 0, 0, 0, width, 1);
x, y, 0, 0, 0, 0, width, 1);
}
pixman_image_t *qemu_pixman_mirror_create(pixman_format_code_t format,

2
qemu-pixman.h
View File

@ -31,7 +31,7 @@ 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);
int width, int x, int y);
pixman_image_t *qemu_pixman_mirror_create(pixman_format_code_t format,
pixman_image_t *image);
void qemu_pixman_image_unref(pixman_image_t *image);

4
ui/vnc-enc-tight.c
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@ -1212,7 +1212,7 @@ static int send_jpeg_rect(VncState *vs, int x, int y, int w, int h, int quality)
buf = (uint8_t *)pixman_image_get_data(linebuf);
row[0] = buf;
for (dy = 0; dy < h; dy++) {
qemu_pixman_linebuf_fill(linebuf, vs->vd->server, w, dy);
qemu_pixman_linebuf_fill(linebuf, vs->vd->server, w, x, y + dy);
jpeg_write_scanlines(&cinfo, row, 1);
}
qemu_pixman_image_unref(linebuf);
@ -1356,7 +1356,7 @@ static int send_png_rect(VncState *vs, int x, int y, int w, int h,
if (color_type == PNG_COLOR_TYPE_PALETTE) {
memcpy(buf, vs->tight.tight.buffer + (dy * w), w);
} else {
qemu_pixman_linebuf_fill(linebuf, vs->vd->server, w, dy);
qemu_pixman_linebuf_fill(linebuf, vs->vd->server, w, x, y + dy);
}
png_write_row(png_ptr, buf);
}

2
ui/vnc.c
View File

@ -2569,7 +2569,7 @@ static int vnc_refresh_server_surface(VncDisplay *vd)
uint8_t *server_ptr;
if (vd->guest.format != VNC_SERVER_FB_FORMAT) {
qemu_pixman_linebuf_fill(tmpbuf, vd->guest.fb, width, y);
qemu_pixman_linebuf_fill(tmpbuf, vd->guest.fb, width, 0, y);
guest_ptr = (uint8_t *)pixman_image_get_data(tmpbuf);
} else {
guest_ptr = guest_row;