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spice: add screen mirror

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Create a screen mirror, keep there a copy of the most recent update
passed on to spice-server.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Gerd Hoffmann 2012-09-05 09:35:57 +02:00
parent c60319a3aa
commit a7310dd34d
2 changed files with 23 additions and 10 deletions
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32
ui/spice-display.c
View file

@ -171,8 +171,8 @@ static void qemu_spice_create_one_update(SimpleSpiceDisplay *ssd,
QXLDrawable *drawable;
QXLImage *image;
QXLCommand *cmd;
uint8_t *src, *dst;
int by, bw, bh;
uint8_t *src, *mirror, *dst;
int by, bw, bh, offset, bytes;
struct timespec time_space;
trace_qemu_spice_create_update(
@ -216,19 +216,18 @@ static void qemu_spice_create_one_update(SimpleSpiceDisplay *ssd,
image->bitmap.palette = 0;
image->bitmap.format = SPICE_BITMAP_FMT_32BIT;
if (ssd->conv == NULL) {
PixelFormat dst = qemu_default_pixelformat(32);
ssd->conv = qemu_pf_conv_get(&dst, &ssd->ds->surface->pf);
assert(ssd->conv);
}
src = ds_get_data(ssd->ds) +
offset =
rect->top * ds_get_linesize(ssd->ds) +
rect->left * ds_get_bytes_per_pixel(ssd->ds);
bytes = ds_get_bytes_per_pixel(ssd->ds) * bw;
src = ds_get_data(ssd->ds) + offset;
mirror = ssd->ds_mirror + offset;
dst = update->bitmap;
for (by = 0; by < bh; by++) {
qemu_pf_conv_run(ssd->conv, dst, src, bw);
memcpy(mirror, src, bytes);
qemu_pf_conv_run(ssd->conv, dst, mirror, bw);
src += ds_get_linesize(ssd->ds);
mirror += ds_get_linesize(ssd->ds);
dst += image->bitmap.stride;
}
@ -243,6 +242,17 @@ static void qemu_spice_create_update(SimpleSpiceDisplay *ssd)
if (qemu_spice_rect_is_empty(&ssd->dirty)) {
return;
};
if (ssd->conv == NULL) {
PixelFormat dst = qemu_default_pixelformat(32);
ssd->conv = qemu_pf_conv_get(&dst, &ssd->ds->surface->pf);
assert(ssd->conv);
}
if (ssd->ds_mirror == NULL) {
int size = ds_get_height(ssd->ds) * ds_get_linesize(ssd->ds);
ssd->ds_mirror = g_malloc0(size);
}
qemu_spice_create_one_update(ssd, &ssd->dirty);
memset(&ssd->dirty, 0, sizeof(ssd->dirty));
}
@ -358,6 +368,8 @@ void qemu_spice_display_resize(SimpleSpiceDisplay *ssd)
memset(&ssd->dirty, 0, sizeof(ssd->dirty));
qemu_pf_conv_put(ssd->conv);
ssd->conv = NULL;
g_free(ssd->ds_mirror);
ssd->ds_mirror = NULL;
qemu_mutex_lock(&ssd->lock);
while ((update = QTAILQ_FIRST(&ssd->updates)) != NULL) {

1
ui/spice-display.h
View file

@ -72,6 +72,7 @@ typedef struct SimpleSpiceUpdate SimpleSpiceUpdate;
struct SimpleSpiceDisplay {
DisplayState *ds;
uint8_t *ds_mirror;
void *buf;
int bufsize;
QXLWorker *worker;