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change dpi buffer #15

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change dpi buffer #15

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7708468
change dpi buffer
dungmv Apr 27, 2020
d98f373
fix variable name
dungmv Apr 27, 2020
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8 changes: 8 additions & 0 deletions dist/index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,7 @@
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.changeDpiBuffer = changeDpiBuffer;
exports.changeDpiBlob = changeDpiBlob;
exports.changeDpiDataUrl = changeDpiDataUrl;

Expand Down Expand Up @@ -51,6 +52,13 @@ var _H = 'H'.charCodeAt(0);
var _Y = 'Y'.charCodeAt(0);
var _S = 's'.charCodeAt(0);

function changeDpiBuffer(buffer, dpi, format) {
var headerChunk = buffer.slice(0, 33);
var tail = buffer.slice(33);
var changedArray = changeDpiOnArray(headerChunk, dpi, format);
return Buffer.concat([changedArray, tail]);
}

function changeDpiBlob(blob, dpi) {
// 33 bytes are ok for pngs and jpegs
// to contain the information.
Expand Down
7 changes: 7 additions & 0 deletions src/index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -41,6 +41,13 @@ const _H = 'H'.charCodeAt(0);
const _Y = 'Y'.charCodeAt(0);
const _S = 's'.charCodeAt(0);

export function changeDpiBuffer(buffer, dpi, format) {
const headerChunk = buffer.slice(0, 33);
const tail = buffer.slice(33);
const changedArray = changeDpiOnArray(headerChunk, dpi, format);
return Buffer.concat([changedArray, tail]);
}

export function changeDpiBlob(blob, dpi) {
// 33 bytes are ok for pngs and jpegs
// to contain the information.
Expand Down