/* FIXME: Not as efficient as it could be. */
static void rf_host_hextile_subrects(void)
{
CARD8 *ptr;
CARD8 pos, dim;
int i;
ptr = cur_slot->readbuf;
if (s_subenc & RFB_HEXTILE_SUBRECTS_COLOURED) {
fbs_spool_data(ptr, s_num_subrects * 6);
for (i = 0; i < (int)s_num_subrects; i++) {
memcpy(&s_fg, ptr, sizeof(s_fg));
ptr += sizeof(s_fg);
pos = *ptr++;
dim = *ptr++;
hextile_fill_subrect(pos, dim);
}
} else {
fbs_spool_data(ptr, s_num_subrects * 2);
for (i = 0; i < (int)s_num_subrects; i++) {
pos = *ptr++;
dim = *ptr++;
hextile_fill_subrect(pos, dim);
}
}
hextile_next_tile();
}
static void rf_host_hextile_hex(void)
{
CARD32 *from_ptr = hextile_buf;
int data_size;
/* Get background and foreground colors */
if (s_subenc & RFB_HEXTILE_BG_SPECIFIED) {
s_bg = *from_ptr++;
fill_fb_rect(&s_tile, s_bg);
}
if (s_subenc & RFB_HEXTILE_FG_SPECIFIED) {
s_fg = *from_ptr++;
}
if (s_subenc & RFB_HEXTILE_ANY_SUBRECTS) {
fbs_spool_data(hextile_buf, (from_ptr - hextile_buf) * sizeof(CARD32) + 1);
s_num_subrects = *((CARD8 *)from_ptr);
if (s_subenc & RFB_HEXTILE_SUBRECTS_COLOURED) {
data_size = 6 * (unsigned int)s_num_subrects;
} else {
data_size = 2 * (unsigned int)s_num_subrects;
}
if (data_size > 0) {
aio_setread(rf_host_hextile_subrects, NULL, data_size);
return;
}
} else {
fbs_spool_data(hextile_buf, (from_ptr - hextile_buf) * sizeof(CARD32));
}
hextile_next_tile();
}
/**
* Called when we get a rfbFramebufferUpdate message.
*/
static void rf_host_fbupdate_hdr(void)
{
CARD8 hdr_buf[4];
rect_count = buf_get_CARD16(&cur_slot->readbuf[1]);
if (rect_count == 0xFFFF) {
log_write(LL_DETAIL, "Receiving framebuffer update");
} else {
log_write(LL_DETAIL, "Receiving framebuffer update, %d rectangle(s)",
rect_count);
}
hdr_buf[0] = 0;
memcpy(&hdr_buf[1], cur_slot->readbuf, 3);
fbs_spool_data(hdr_buf, 4);
if (rect_count) {
aio_setread(rf_host_fbupdate_recthdr, NULL, 12);
} else {
log_write(LL_DEBUG, "Requesting incremental framebuffer update");
request_update(1);
aio_setread(rf_host_msg, NULL, 1);
}
}
static void rf_host_copyrect(void)
{
CARD32 *src_ptr;
CARD32 *dst_ptr;
int width/* = (int)g_fb_width*/;
int row;
#ifdef CHROMIUM
CARD32 *g_framebuffer;
CARD16 g_fb_width, g_fb_height;
g_framebuffer = GetFrameBuffer(&g_fb_width, &g_fb_height);
width = g_fb_width;
#endif
fbs_spool_data(cur_slot->readbuf, 4);
cur_rect.src_x = buf_get_CARD16(cur_slot->readbuf);
cur_rect.src_y = buf_get_CARD16(&cur_slot->readbuf[2]);
if ( cur_rect.src_x >= g_fb_width ||
cur_rect.src_x + cur_rect.w > g_fb_width ||
cur_rect.src_y >= g_fb_height ||
cur_rect.src_y + cur_rect.h > g_fb_height ) {
log_write(LL_ERROR,
"CopyRect from outside of the framebuffer: %dx%d from %d,%d",
(int)cur_rect.w, (int)cur_rect.h,
(int)cur_rect.src_x, (int)cur_rect.src_y);
aio_close(0);
return;
}
if (cur_rect.src_y > cur_rect.y) {
/* Copy rows starting from top */
src_ptr = &g_framebuffer[cur_rect.src_y * width + cur_rect.src_x];
dst_ptr = &g_framebuffer[cur_rect.y * width + cur_rect.x];
for (row = 0; row < cur_rect.h; row++) {
memmove(dst_ptr, src_ptr, cur_rect.w * sizeof(CARD32));
src_ptr += width;
dst_ptr += width;
}
} else {
/* Copy rows starting from bottom */
src_ptr = &g_framebuffer[(cur_rect.src_y + cur_rect.h - 1) * width +
cur_rect.src_x];
dst_ptr = &g_framebuffer[(cur_rect.y + cur_rect.h - 1) * width +
cur_rect.x];
for (row = 0; row < cur_rect.h; row++) {
memmove(dst_ptr, src_ptr, cur_rect.w * sizeof(CARD32));
src_ptr -= width;
dst_ptr -= width;
}
}
fbupdate_rect_done();
}
static void rf_host_richcursor_bmps(void)
{
fbs_spool_data(cur_slot->readbuf, s_read_size);
s_curs_rect = s_new_curs_rect;
s_bmps = realloc(s_bmps, s_read_size);
if (!s_bmps) {
log_write(LL_ERROR, "Failed to allocate memory for cursor pixmaps");
aio_close(0);
return;
}
memcpy(s_bmps, s_new_bmps, s_read_size);
s_type = RFB_ENCODING_RICHCURSOR;
rf_host_cursor();
fbupdate_rect_done();
}
static void rf_host_xcursor_color(void)
{
CARD32 size;
fbs_spool_data(cur_slot->readbuf, sz_rfbXCursorColors);
/* calculate size of two cursor bitmaps to follow */
size = ((s_new_curs_rect.w + 7) / 8) * s_new_curs_rect.h * 2;
s_new_bmps = realloc(s_new_bmps, size);
if (!s_new_bmps) {
log_write(LL_ERROR, "Failed to allocate memory for cursor pixmaps");
aio_close(0);
return;
}
s_read_size = size;
aio_setread(rf_host_xcursor_bmps, s_new_bmps, size);
}
static void rf_host_hextile_raw(void)
{
int row;
CARD32 *from_ptr;
CARD32 *fb_ptr;
fbs_spool_data(hextile_buf, s_tile.w * s_tile.h * sizeof(CARD32));
from_ptr = hextile_buf;
fb_ptr = &g_framebuffer[s_tile.y * (int)g_fb_width + s_tile.x];
/* Just copy raw data into the framebuffer */
for (row = 0; row < s_tile.h; row++) {
memcpy(fb_ptr, from_ptr, s_tile.w * sizeof(CARD32));
from_ptr += s_tile.w;
fb_ptr += g_fb_width;
}
hextile_next_tile();
}
static void rf_host_fbupdate_raw(void)
{
#ifdef CHROMIUM
CARD32 *g_framebuffer;
CARD16 g_fb_width, g_fb_height;
g_framebuffer = GetFrameBuffer(&g_fb_width, &g_fb_height);
#endif
fbs_spool_data(cur_slot->readbuf, cur_rect.w * sizeof(CARD32));
if (++rect_cur_row < cur_rect.h) {
/* Read next row */
CARD32 *dst = PIXEL_ADDR(g_framebuffer, g_fb_width, g_fb_height,
cur_rect.x, cur_rect.y + rect_cur_row);
aio_setread(rf_host_fbupdate_raw, dst,
cur_rect.w * sizeof(CARD32));
} else {
/* Done with this rectangle */
fbupdate_rect_done();
}
}
static void rf_host_fbupdate_recthdr(void)
{
HOST_SLOT *hs = (HOST_SLOT *)cur_slot;
#ifdef CHROMIUM
CARD32 *g_framebuffer;
CARD16 g_fb_width, g_fb_height;
g_framebuffer = GetFrameBuffer(&g_fb_width, &g_fb_height);
#endif
cur_rect.x = buf_get_CARD16(cur_slot->readbuf);
cur_rect.y = buf_get_CARD16(&cur_slot->readbuf[2]);
cur_rect.w = buf_get_CARD16(&cur_slot->readbuf[4]);
cur_rect.h = buf_get_CARD16(&cur_slot->readbuf[6]);
cur_rect.enc = buf_get_CARD32(&cur_slot->readbuf[8]);
fbs_spool_data(cur_slot->readbuf, 12);
/* Handle LastRect "encoding" first */
if (cur_rect.enc == RFB_ENCODING_LASTRECT) {
log_write(LL_DEBUG, "LastRect marker received from the host");
cur_rect.x = cur_rect.y = 0;
rect_count = 1;
fbupdate_rect_done();
return;
}
/* Ignore zero-size rectangles */
if (cur_rect.h == 0 || cur_rect.w == 0) {
log_write(LL_WARN, "Zero-size rectangle %dx%d at %d,%d (ignoring)",
(int)cur_rect.w, (int)cur_rect.h,
(int)cur_rect.x, (int)cur_rect.y);
fbupdate_rect_done();
return;
}
/* Handle NewFBSize "encoding", as a special case */
if (cur_rect.enc == RFB_ENCODING_NEWFBSIZE) {
log_write(LL_INFO, "New host desktop geometry: %dx%d",
(int)cur_rect.w, (int)cur_rect.h);
g_screen_info.width = hs->fb_width = cur_rect.w;
g_screen_info.height = hs->fb_height = cur_rect.h;
/* Reallocate the framebuffer if necessary */
if (!alloc_framebuffer(hs->fb_width, hs->fb_height)) {
aio_close(1);
return;
}
cur_rect.x = cur_rect.y = 0;
/* NewFBSize is always the last rectangle regardless of rect_count */
rect_count = 1;
fbupdate_rect_done();
return;
}
/* Prevent overflow of the framebuffer */
if (cur_rect.x >= g_fb_width || cur_rect.x + cur_rect.w > g_fb_width ||
cur_rect.y >= g_fb_height || cur_rect.y + cur_rect.h > g_fb_height) {
log_write(LL_ERROR, "Rectangle out of framebuffer bounds: %dx%d at %d,%d",
(int)cur_rect.w, (int)cur_rect.h,
(int)cur_rect.x, (int)cur_rect.y);
aio_close(0);
return;
}
/* Ok, now the rectangle seems correct */
log_write(LL_DEBUG, "Receiving rectangle %dx%d at %d,%d",
(int)cur_rect.w, (int)cur_rect.h,
(int)cur_rect.x, (int)cur_rect.y);
switch(cur_rect.enc) {
case RFB_ENCODING_RAW:
log_write(LL_DEBUG, "Receiving raw data, expecting %d byte(s)",
cur_rect.w * cur_rect.h * sizeof(CARD32));
rect_cur_row = 0;
aio_setread(rf_host_fbupdate_raw,
PIXEL_ADDR(g_framebuffer, g_fb_width, g_fb_height,
cur_rect.x, cur_rect.y),
cur_rect.w * sizeof(CARD32));
break;
case RFB_ENCODING_COPYRECT:
log_write(LL_DEBUG, "Receiving CopyRect instruction");
aio_setread(rf_host_copyrect, NULL, 4);
break;
case RFB_ENCODING_HEXTILE:
log_write(LL_DEBUG, "Receiving Hextile-encoded data");
setread_decode_hextile(&cur_rect);
break;
case RFB_ENCODING_TIGHT:
log_write(LL_DEBUG, "Receiving Tight-encoded data");
setread_decode_tight(&cur_rect);
break;
default:
log_write(LL_ERROR, "Unknown encoding: 0x%08lX",
(unsigned long)cur_rect.enc);
aio_close(0);
}
}