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broadway: Extract buffer decoding to separate helper

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This commit is contained in:
Alexander Larsson 2013-11-08 10:13:12 +01:00
parent 6ce966f24b
commit 688b6e63b5
1 changed files with 16 additions and 8 deletions
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24
gdk/broadway/broadway.js
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@ -329,13 +329,10 @@ function copyRect(src, srcX, srcY, dest, destX, destY, width, height)
}
}
function cmdPutBuffer(id, w, h, compressed)
function decodeBuffer(context, oldData, w, h, data)
{
var surface = surfaces[id];
var context = surface.canvas.getContext("2d");
var imageData = context.createImageData(w, h);
var oldData = surface.imageData;
var i, j;
var imageData = context.createImageData(w, h);
if (oldData != null) {
// Copy old frame into new buffer
@ -345,9 +342,6 @@ function cmdPutBuffer(id, w, h, compressed)
var src = 0;
var dest = 0;
var inflate = new Zlib.RawInflate(compressed);
var data = inflate.decompress();
while (src < data.length) {
var b = data[src++];
var g = data[src++];
@ -442,6 +436,20 @@ function cmdPutBuffer(id, w, h, compressed)
}
}
return imageData;
}
function cmdPutBuffer(id, w, h, compressed)
{
var surface = surfaces[id];
var context = surface.canvas.getContext("2d");
var inflate = new Zlib.RawInflate(compressed);
var data = inflate.decompress();
var imageData = decodeBuffer (context, surface.imageData, w, h, data);
context.putImageData(imageData, 0, 0);
surface.imageData = imageData;
}