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Use lowercase BPP consistently

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Luke Page 2015-09-13 18:43:44 +01:00
parent 159221c115
commit d08fc30edb
1 changed files with 14 additions and 14 deletions
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28
lib/filter-pack.js
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@ -17,23 +17,23 @@ function filterSumNone(pxData, pxPos, byteWidth) {
return sum;
}
function filterSub(pxData, pxPos, byteWidth, rawData, rawPos, BPP) {
function filterSub(pxData, pxPos, byteWidth, rawData, rawPos, bpp) {
for (var x = 0; x < byteWidth; x++) {
var left = x >= BPP ? pxData[pxPos + x - BPP] : 0;
var left = x >= bpp ? pxData[pxPos + x - bpp] : 0;
var val = pxData[pxPos + x] - left;
rawData[rawPos + x] = val;
}
}
function filterSumSub(pxData, pxPos, byteWidth, BPP) {
function filterSumSub(pxData, pxPos, byteWidth, bpp) {
var sum = 0;
for (var x = 0; x < byteWidth; x++) {
var left = x >= BPP ? pxData[pxPos + x - BPP] : 0;
var left = x >= bpp ? pxData[pxPos + x - bpp] : 0;
var val = pxData[pxPos + x] - left;
sum += Math.abs(val);
@ -68,11 +68,11 @@ function filterSumUp(pxData, pxPos, byteWidth) {
return sum;
}
function filterAvg(pxData, pxPos, byteWidth, rawData, rawPos, BPP) {
function filterAvg(pxData, pxPos, byteWidth, rawData, rawPos, bpp) {
for (var x = 0; x < byteWidth; x++) {
var left = x >= BPP ? pxData[pxPos + x - BPP] : 0;
var left = x >= bpp ? pxData[pxPos + x - bpp] : 0;
var up = pxPos > 0 ? pxData[pxPos + x - byteWidth] : 0;
var val = pxData[pxPos + x] - ((left + up) >> 1);
@ -80,12 +80,12 @@ function filterAvg(pxData, pxPos, byteWidth, rawData, rawPos, BPP) {
}
}
function filterSumAvg(pxData, pxPos, byteWidth, BPP) {
function filterSumAvg(pxData, pxPos, byteWidth, bpp) {
var sum = 0;
for (var x = 0; x < byteWidth; x++) {
var left = x >= BPP ? pxData[pxPos + x - BPP] : 0;
var left = x >= bpp ? pxData[pxPos + x - bpp] : 0;
var up = pxPos > 0 ? pxData[pxPos + x - byteWidth] : 0;
var val = pxData[pxPos + x] - ((left + up) >> 1);
@ -95,26 +95,26 @@ function filterSumAvg(pxData, pxPos, byteWidth, BPP) {
return sum;
}
function filterPaeth(pxData, pxPos, byteWidth, rawData, rawPos, BPP) {
function filterPaeth(pxData, pxPos, byteWidth, rawData, rawPos, bpp) {
for (var x = 0; x < byteWidth; x++) {
var left = x >= BPP ? pxData[pxPos + x - BPP] : 0;
var left = x >= bpp ? pxData[pxPos + x - bpp] : 0;
var up = pxPos > 0 ? pxData[pxPos + x - byteWidth] : 0;
var upleft = pxPos > 0 && x >= BPP ? pxData[pxPos + x - (byteWidth + BPP)] : 0;
var upleft = pxPos > 0 && x >= bpp ? pxData[pxPos + x - (byteWidth + bpp)] : 0;
var val = pxData[pxPos + x] - paethPredictor(left, up, upleft);
rawData[rawPos + x] = val;
}
}
function filterSumPaeth(pxData, pxPos, byteWidth, BPP) {
function filterSumPaeth(pxData, pxPos, byteWidth, bpp) {
var sum = 0;
for (var x = 0; x < byteWidth; x++) {
var left = x >= BPP ? pxData[pxPos + x - BPP] : 0;
var left = x >= bpp ? pxData[pxPos + x - bpp] : 0;
var up = pxPos > 0 ? pxData[pxPos + x - byteWidth] : 0;
var upleft = pxPos > 0 && x >= BPP ? pxData[pxPos + x - (byteWidth + BPP)] : 0;
var upleft = pxPos > 0 && x >= bpp ? pxData[pxPos + x - (byteWidth + bpp)] : 0;
var val = pxData[pxPos + x] - paethPredictor(left, up, upleft);
sum += Math.abs(val);