qemu/0507-spice-add-screen-mirror.patch
Cole Robinson 9290838132 Fix boot hang if console is not connected (bz #894451)
Fix segfault with zero length virtio-scsi disk (bz #847549)
2013-02-02 15:47:37 -05:00

96 lines
3.2 KiB
Diff

From d02ed657b7ad55f2111a049c3e175ed78c63e5b1 Mon Sep 17 00:00:00 2001
From: Gerd Hoffmann <kraxel@redhat.com>
Date: Wed, 5 Sep 2012 09:35:57 +0200
Subject: [PATCH] spice: add screen mirror
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>
---
ui/spice-display.c | 32 ++++++++++++++++++++++----------
ui/spice-display.h | 1 +
2 files changed, 23 insertions(+), 10 deletions(-)
diff --git a/ui/spice-display.c b/ui/spice-display.c
index 6f68f28..973cd53 100644
--- a/ui/spice-display.c
+++ b/ui/spice-display.c
@@ -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) {
diff --git a/ui/spice-display.h b/ui/spice-display.h
index 3fcb6fe..dea41c1 100644
--- a/ui/spice-display.h
+++ b/ui/spice-display.h
@@ -72,6 +72,7 @@ typedef struct SimpleSpiceUpdate SimpleSpiceUpdate;
struct SimpleSpiceDisplay {
DisplayState *ds;
+ uint8_t *ds_mirror;
void *buf;
int bufsize;
QXLWorker *worker;