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bit-buffer

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bit-buffer - npm Package Compare versions

Comparing version

to
0.2.0

6

bit-buffer.d.ts

@@ -35,3 +35,3 @@ declare module 'bit-buffer' {

writeBoolean(value: number);
writeBoolean(value: boolean);

@@ -65,3 +65,7 @@ writeInt8(value: number);

readArrayBuffer(byteLength: number): Uint8Array;
writeBitStream(stream: BitStream, length?: number);
writeArrayBuffer(buffer: BitStream, length?: number);
}
}

@@ -418,2 +418,16 @@ (function (root) {

};
BitStream.prototype.writeBitStream = function(stream, length) {
if (!length) {
length = stream.bitsLeft;
}
var bitsToWrite;
while (length > 0) {
bitsToWrite = Math.min(length, 32);
this.writeBits(stream.readBits(bitsToWrite), bitsToWrite);
length -= bitsToWrite;
}
};
BitStream.prototype.readArrayBuffer = function(byteLength) {

@@ -425,2 +439,6 @@ var buffer = this._view.getArrayBuffer(this._index, byteLength);

BitStream.prototype.writeArrayBuffer = function(buffer, byteLength) {
this.writeBitStream(new BitStream(buffer), byteLength * 8);
};
// AMD / RequireJS

@@ -427,0 +445,0 @@ if (typeof define !== 'undefined' && define.amd) {

2

package.json
{
"name": "bit-buffer",
"version": "0.1.0",
"version": "0.2.0",
"description": "Bit-level reads and writes for ArrayBuffers",

@@ -5,0 +5,0 @@ "main": "bit-buffer.js",

@@ -297,2 +297,34 @@ var assert = require('assert'),

test('writeBitStream', function () {
var sourceStream = new BitStream(new ArrayBuffer(64));
sourceStream.writeBits(0xF0, 8); //0b11110000
sourceStream.writeBits(0xF1, 8); //0b11110001
sourceStream.index = 0;
sourceStream.readBits(3); //offset
bsr.writeBitStream(sourceStream, 8);
assert.equal(8, bsr.index);
bsr.index = 0;
assert.equal(bsr.readBits(6), 0x3E); //0b00111110
assert.equal(11, sourceStream.index);
});
test('writeBitStream long', function () {
var sourceStream = new BitStream(new ArrayBuffer(64));
sourceStream.writeBits(0xF0, 8);
sourceStream.writeBits(0xF1, 8);
sourceStream.writeBits(0xF1, 8);
sourceStream.writeBits(0xF1, 8);
sourceStream.writeBits(0xF1, 8);
sourceStream.index = 0;
sourceStream.readBits(3); //offset
bsr.index = 3;
bsr.writeBitStream(sourceStream, 35);
assert.equal(38, bsr.index);
bsr.index = 3;
assert.equal(bsr.readBits(35), 1044266558);
assert.equal(38, sourceStream.index);
});
test('readArrayBuffer', function () {

@@ -312,2 +344,17 @@ bsw.writeBits(0xF0, 8); //0b11110000

test('writeArrayBuffer', function () {
var source = new Uint8Array(4);
source[0]=0xF0;
source[1]=0xF1;
source[2]=0xF1;
bsr.readBits(3); //offset
bsr.writeArrayBuffer(source.buffer, 2);
assert.equal(19, bsr.index);
bsr.index = 0;
assert.equal(bsr.readBits(8), 128);
});
test('Get buffer from view', function() {

@@ -314,0 +361,0 @@ bv.setBits(0, 0xFFFFFFFF, 32);

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