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Refactor processing to allow hextile processing. 

With hextile you can't know how many bytes are pending. So restructure
so that all the received data so far is passed to the processsing
routines.
This commit is contained in:
Joel Martin 2010-04-12 13:21:44 -05:00
parent f761808540
commit 0f62806499
1 changed files with 44 additions and 30 deletions
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74
vnc.js
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@ -44,6 +44,7 @@ Array.prototype.shiftBytes = function (len) {
var FBU = { var FBU = {
rects : 0, rects : 0,
subrects : 0, subrects : 0,
tiles : 0,
bytes : 0, bytes : 0,
x : 0, x : 0,
y : 0, y : 0,
@ -208,7 +209,7 @@ display_raw: function () {
debug(">> display_raw"); debug(">> display_raw");
Canvas.rfbImage(FBU.x, FBU.y, FBU.width, FBU.height, FBU.arr); Canvas.rfbImage(FBU.x, FBU.y, FBU.width, FBU.height, FBU.arr);
FBU.rects --; FBU.rects --;
FBU.arr = []; FBU.arr.splice(0, FBU.width * FBU.height * RFB.fb_Bpp);
}, },
display_copy_rect: function () { display_copy_rect: function () {
@ -217,7 +218,6 @@ display_copy_rect: function () {
var old_y = FBU.arr.shift16(); var old_y = FBU.arr.shift16();
Canvas.copyImage(old_x, old_y, FBU.x, FBU.y, FBU.width, FBU.height); Canvas.copyImage(old_x, old_y, FBU.x, FBU.y, FBU.width, FBU.height);
FBU.rects --; FBU.rects --;
FBU.arr = [];
}, },
display_rre: function () { display_rre: function () {
@ -228,7 +228,7 @@ display_rre: function () {
var color = FBU.arr.shiftBytes(RFB.fb_Bpp); // Background var color = FBU.arr.shiftBytes(RFB.fb_Bpp); // Background
Canvas.rfbRect(FBU.x, FBU.y, FBU.width, FBU.height, color); Canvas.rfbRect(FBU.x, FBU.y, FBU.width, FBU.height, color);
} }
while (FBU.arr.length > 0) { while ((FBU.subrects > 0) && (FBU.arr.length >= (RFB.fb_Bpp + 8))) {
FBU.subrects --; FBU.subrects --;
var color = FBU.arr.shiftBytes(RFB.fb_Bpp); var color = FBU.arr.shiftBytes(RFB.fb_Bpp);
var x = FBU.arr.shift16(); var x = FBU.arr.shift16();
@ -237,18 +237,25 @@ display_rre: function () {
var height = FBU.arr.shift16(); var height = FBU.arr.shift16();
Canvas.rfbRect(FBU.x + x, FBU.y + y, width, height, color); Canvas.rfbRect(FBU.x + x, FBU.y + y, width, height, color);
} }
//debug("rects: " + FBU.rects + ", FBU.subrects: " + FBU.subrects); //debug(" display_rre: rects: " + FBU.rects + ", FBU.subrects: " + FBU.subrects);
if (FBU.subrects > 0) { if (FBU.subrects > 0) {
var chunk = Math.min(RFB.rre_chunk, FBU.subrects); var chunk = Math.min(RFB.rre_chunk, FBU.subrects);
FBU.bytes = (RFB.fb_Bpp + 8) * chunk; FBU.bytes = (RFB.fb_Bpp + 8) * chunk;
} else { } else {
FBU.rects --; FBU.rects --;
FBU.arr = [];
} }
//debug("<< display_rre, FBU.bytes: " + FBU.bytes); //debug("<< display_rre, FBU.bytes: " + FBU.bytes);
}, },
display_hextile: function() {
if (FBU.tiles == 0) {
FBU.tiles = (Math.ceiling(FBU.width/16.0)) * (Math.ceiling(FBU.height/16.0));
}
while (FBU.arr.length) {};
},
/* Normal RFB/VNC messages */ /* Normal RFB/VNC messages */
normal_msg: function (data) { normal_msg: function (data) {
@ -270,14 +277,17 @@ normal_msg: function (data) {
//debug("FramebufferUpdate continuation"); //debug("FramebufferUpdate continuation");
} }
while (data.length > 0) { if (data.length > 0 ) {
//debug("data.length: " + data.length + ", FBU.bytes: " + FBU.bytes); FBU.arr = FBU.arr.concat(data);
}
while (FBU.arr.length > 0) {
if (FBU.bytes == 0) { if (FBU.bytes == 0) {
FBU.x = data.shift16(); FBU.x = FBU.arr.shift16();
FBU.y = data.shift16(); FBU.y = FBU.arr.shift16();
FBU.width = data.shift16(); FBU.width = FBU.arr.shift16();
FBU.height = data.shift16(); FBU.height = FBU.arr.shift16();
FBU.encoding = parseInt(data.shift32(), 10); FBU.encoding = parseInt(FBU.arr.shift32(), 10);
debug("encoding: " + FBU.encoding); debug("encoding: " + FBU.encoding);
switch (FBU.encoding) { switch (FBU.encoding) {
case 0: // Raw case 0: // Raw
@ -289,28 +299,30 @@ normal_msg: function (data) {
case 2: // RRE case 2: // RRE
FBU.bytes = 4 + RFB.fb_Bpp; FBU.bytes = 4 + RFB.fb_Bpp;
break; break;
} case 5: // hextile
} else { FBU.bytes = 1; // No header; get it started
if (data.length >= FBU.bytes) { break;
//debug('Done rect:');
FBU.arr = FBU.arr.concat(data.shiftBytes(FBU.bytes))
FBU.bytes = 0;
switch (FBU.encoding) {
case 0: RFB.display_raw(); break; // Raw
case 1: RFB.display_copy_rect(); break; // Copy-Rect
case 2: RFB.display_rre(); break; // RRE
}
FBU.arr = [];
} else {
FBU.bytes = FBU.bytes - data.length;
FBU.arr = FBU.arr.concat(data.shiftBytes(data.length))
} }
} }
//debug("FBU.arr.length: " + FBU.arr.length + ", FBU.bytes: " + FBU.bytes);
//debug("Bytes remaining: " + FBU.bytes); if (FBU.arr.length >= FBU.bytes) {
//debug('Done rect:');
FBU.bytes = 0;
switch (FBU.encoding) {
case 0: RFB.display_raw(); break; // Raw
case 1: RFB.display_copy_rect(); break; // Copy-Rect
case 2: RFB.display_rre(); break; // RRE
case 5: RFB.display_hextile(); break; // hextile
}
} else {
/* We don't have enough yet */
FBU.bytes = FBU.bytes - data.length;
break;
}
} }
//debug("Finished frame buffer update"); //debug("Finished frame buffer update");
break; break;
case 1: // SetColourMapEntries case 1: // SetColourMapEntries
@ -367,6 +379,8 @@ setEncodings: function () {
var arr = [2]; // msg-type var arr = [2]; // msg-type
arr.push8(0); // padding arr.push8(0); // padding
arr.push16(3); // encoding count arr.push16(3); // encoding count
//arr.push16(4); // encoding count
//arr.push32(5); // hextile encoding
arr.push32(2); // RRE encoding arr.push32(2); // RRE encoding
arr.push32(1); // copy-rect encoding arr.push32(1); // copy-rect encoding
arr.push32(0); // raw encoding arr.push32(0); // raw encoding