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support for higher resolutions 

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1956 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2006-06-13 16:35:24 +00:00
parent 74a14f22b8
commit 99589bdcd1
1 changed files with 57 additions and 17 deletions
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74
vnc.c
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@ -50,6 +50,10 @@ typedef void VncSendHextileTile(VncState *vs,
uint32_t *last_fg,
int *has_bg, int *has_fg);
#define VNC_MAX_WIDTH 2048
#define VNC_MAX_HEIGHT 2048
#define VNC_DIRTY_WORDS (VNC_MAX_WIDTH / (16 * 32))
struct VncState
{
QEMUTimer *timer;
@ -59,7 +63,7 @@ struct VncState
int need_update;
int width;
int height;
uint64_t dirty_row[768];
uint32_t dirty_row[VNC_MAX_HEIGHT][VNC_DIRTY_WORDS];
char *old_data;
int depth; /* internal VNC frame buffer byte per pixel */
int has_resize;
@ -95,6 +99,47 @@ static void vnc_flush(VncState *vs);
static void vnc_update_client(void *opaque);
static void vnc_client_read(void *opaque);
static inline void vnc_set_bit(uint32_t *d, int k)
{
d[k >> 5] |= 1 << (k & 0x1f);
}
static inline void vnc_clear_bit(uint32_t *d, int k)
{
d[k >> 5] &= ~(1 << (k & 0x1f));
}
static inline void vnc_set_bits(uint32_t *d, int n, int nb_words)
{
int j;
j = 0;
while (n >= 32) {
d[j++] = -1;
n -= 32;
}
if (n > 0)
d[j++] = (1 << n) - 1;
while (j < nb_words)
d[j++] = 0;
}
static inline int vnc_get_bit(const uint32_t *d, int k)
{
return (d[k >> 5] >> (k & 0x1f)) & 1;
}
static inline int vnc_and_bits(const uint32_t *d1, const uint32_t *d2,
int nb_words)
{
int i;
for(i = 0; i < nb_words; i++) {
if ((d1[i] & d2[i]) != 0)
return 1;
}
return 0;
}
static void vnc_dpy_update(DisplayState *ds, int x, int y, int w, int h)
{
VncState *vs = ds->opaque;
@ -104,7 +149,7 @@ static void vnc_dpy_update(DisplayState *ds, int x, int y, int w, int h)
for (; y < h; y++)
for (i = 0; i < w; i += 16)
vs->dirty_row[y] |= (1ULL << ((x + i) / 16));
vnc_set_bit(vs->dirty_row[y], (x + i) / 16);
}
static void vnc_framebuffer_update(VncState *vs, int x, int y, int w, int h,
@ -316,10 +361,10 @@ static int find_dirty_height(VncState *vs, int y, int last_x, int x)
for (h = 1; h < (vs->height - y); h++) {
int tmp_x;
if (!(vs->dirty_row[y + h] & (1ULL << last_x)))
if (!vnc_get_bit(vs->dirty_row[y + h], last_x))
break;
for (tmp_x = last_x; tmp_x < x; tmp_x++)
vs->dirty_row[y + h] &= ~(1ULL << tmp_x);
vnc_clear_bit(vs->dirty_row[y + h], tmp_x);
}
return h;
@ -333,15 +378,12 @@ static void vnc_update_client(void *opaque)
int y;
char *row;
char *old_row;
uint64_t width_mask;
uint32_t width_mask[VNC_DIRTY_WORDS];
int n_rectangles;
int saved_offset;
int has_dirty = 0;
width_mask = (1ULL << (vs->width / 16)) - 1;
if (vs->width == 1024)
width_mask = ~(0ULL);
vnc_set_bits(width_mask, (vs->width / 16), VNC_DIRTY_WORDS);
/* Walk through the dirty map and eliminate tiles that
really aren't dirty */
@ -349,7 +391,7 @@ static void vnc_update_client(void *opaque)
old_row = vs->old_data;
for (y = 0; y < vs->height; y++) {
if (vs->dirty_row[y] & width_mask) {
if (vnc_and_bits(vs->dirty_row[y], width_mask, VNC_DIRTY_WORDS)) {
int x;
char *ptr, *old_ptr;
@ -358,7 +400,7 @@ static void vnc_update_client(void *opaque)
for (x = 0; x < vs->ds->width; x += 16) {
if (memcmp(old_ptr, ptr, 16 * vs->depth) == 0) {
vs->dirty_row[y] &= ~(1ULL << (x / 16));
vnc_clear_bit(vs->dirty_row[y], (x / 16));
} else {
has_dirty = 1;
memcpy(old_ptr, ptr, 16 * vs->depth);
@ -389,11 +431,11 @@ static void vnc_update_client(void *opaque)
int x;
int last_x = -1;
for (x = 0; x < vs->width / 16; x++) {
if (vs->dirty_row[y] & (1ULL << x)) {
if (vnc_get_bit(vs->dirty_row[y], x)) {
if (last_x == -1) {
last_x = x;
}
vs->dirty_row[y] &= ~(1ULL << x);
vnc_clear_bit(vs->dirty_row[y], x);
} else {
if (last_x != -1) {
int h = find_dirty_height(vs, y, last_x, x);
@ -688,10 +730,8 @@ static void framebuffer_update_request(VncState *vs, int incremental,
char *old_row = vs->old_data + y_position * vs->ds->linesize;
for (i = 0; i < h; i++) {
vs->dirty_row[y_position + i] = (1ULL << (vs->ds->width / 16)) - 1;
if (vs->ds->width == 1024) {
vs->dirty_row[y_position + i] = ~(0ULL);
}
vnc_set_bits(vs->dirty_row[y_position + i],
(vs->ds->width / 16), VNC_DIRTY_WORDS);
memset(old_row, 42, vs->ds->width * vs->depth);
old_row += vs->ds->linesize;
}