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console: simplify screendump

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Screendumps are alot simpler as we can update non-active
QemuConsoles now.  So we only need to update the QemuConsole
we want write out, then dump the DisplaySurface content into
a ppm file.  Done.

No console switching needed.  No special support code in the
gfx card emulation needed.  Zap it all.  Also move ppm_save
out of the vga code and next to the qmp_screendump function.

For now screen dumping is limited to console #0 (like it used
to be), even though it is dead simple to extend it to other
consoles.  I wanna finish the console cleanup before setting
new qapi interfaces into stone.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Tested-by: Igor Mitsyanko <i.mitsyanko@gmail.com>
This commit is contained in:
Gerd Hoffmann 2013-03-12 14:48:31 +01:00
parent 321f048d24
commit 2c62f08ddb
26 changed files with 74 additions and 452 deletions
Download patch file Download diff file Expand all files Collapse all files

66
hw/display/vga.c
View file

@ -166,9 +166,6 @@ static uint32_t expand4[256];
static uint16_t expand2[256];
static uint8_t expand4to8[16];
static void vga_screen_dump(void *opaque, const char *filename, bool cswitch,
Error **errp);
static void vga_update_memory_access(VGACommonState *s)
{
MemoryRegion *region, *old_region = s->chain4_alias;
@ -2298,7 +2295,6 @@ void vga_common_init(VGACommonState *s)
s->get_resolution = vga_get_resolution;
s->update = vga_update_display;
s->invalidate = vga_invalidate_display;
s->screen_dump = vga_screen_dump;
s->text_update = vga_update_text;
switch (vga_retrace_method) {
case VGA_RETRACE_DUMB:
@ -2393,65 +2389,3 @@ void vga_init_vbe(VGACommonState *s, MemoryRegion *system_memory)
&s->vram_vbe);
s->vbe_mapped = 1;
}
/********************************************************/
/* vga screen dump */
void ppm_save(const char *filename, struct DisplaySurface *ds, Error **errp)
{
int width = pixman_image_get_width(ds->image);
int height = pixman_image_get_height(ds->image);
FILE *f;
int y;
int ret;
pixman_image_t *linebuf;
trace_ppm_save(filename, ds);
f = fopen(filename, "wb");
if (!f) {
error_setg(errp, "failed to open file '%s': %s", filename,
strerror(errno));
return;
}
ret = fprintf(f, "P6\n%d %d\n%d\n", width, height, 255);
if (ret < 0) {
linebuf = NULL;
goto write_err;
}
linebuf = qemu_pixman_linebuf_create(PIXMAN_BE_r8g8b8, width);
for (y = 0; y < height; 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);
(void)ret;
if (ferror(f)) {
goto write_err;
}
}
out:
qemu_pixman_image_unref(linebuf);
fclose(f);
return;
write_err:
error_setg(errp, "failed to write to file '%s': %s", filename,
strerror(errno));
unlink(filename);
goto out;
}
/* save the vga display in a PPM image even if no display is
available */
static void vga_screen_dump(void *opaque, const char *filename, bool cswitch,
Error **errp)
{
VGACommonState *s = opaque;
DisplaySurface *surface = qemu_console_surface(s->con);
if (cswitch) {
vga_invalidate_display(s);
}
graphic_hw_update(s->con);
ppm_save(filename, surface, errp);
}