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Removed output double boffering in deflate wrappermake test

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This commit is contained in:
Vitaly Puzrin 2014-02-15 01:35:10 +04:00
parent 3288124672
commit c1383793f6
1 changed files with 14 additions and 5 deletions
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19
lib/deflate.js
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@ -32,7 +32,6 @@ var Deflate = function(options) {
}
this.strm = new zstream();
this.strm.next_out = utils.arrayCreate(opt.chunkSize);
var status = zlib_deflate.deflateInit2(
this.strm,
@ -53,11 +52,13 @@ var Deflate = function(options) {
*/
Deflate.prototype.push = function(data_in) {
var strm = this.strm;
var out;
var chunkSize = this.options.chunkSize;
var sliced;
strm.next_in = data_in;
strm.next_in_index = 0;
strm.avail_in = strm.next_in.length;
strm.next_out = utils.arrayCreate(chunkSize);
/* run deflate() on input until output buffer not full, finish
compression if all of source has been read in */
@ -71,9 +72,17 @@ Deflate.prototype.push = function(data_in) {
// this.onEnd(ret);
//}
if(strm.next_out_index) {
out = utils.arrayCreate(strm.next_out_index);
utils.arraySet(out, strm.next_out, 0, strm.next_out_index, 0);
this.onData(out);
if (strm.next_out_index === chunkSize) {
// out buffer completely filled, push it as is
this.onData(strm.next_out);
} else {
// out buffer partially filled, slice it first
sliced = utils.arrayCreate(strm.next_out_index);
utils.arraySet(sliced, strm.next_out, 0, strm.next_out_index, 0);
this.onData(sliced);
}
// Allocate buffer for next chunk
strm.next_out = utils.arrayCreate(this.options.chunkSize);
}
} while (strm.avail_in > 0 || strm.avail_out === 0);
};