mirror of
https://github.com/lovell/sharp.git
synced 2025-07-09 18:40:16 +02:00
526 lines
16 KiB
JavaScript
526 lines
16 KiB
JavaScript
'use strict';
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const fs = require('fs');
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const assert = require('assert');
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const sharp = require('../../');
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const fixtures = require('../fixtures');
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const outputTiff = fixtures.path('output.tiff');
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describe('TIFF', function () {
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it('Load TIFF from Buffer', function (done) {
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const inputTiffBuffer = fs.readFileSync(fixtures.inputTiff);
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sharp(inputTiffBuffer)
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.resize(320, 240)
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.jpeg()
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.toBuffer(function (err, data, info) {
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if (err) throw err;
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assert.strictEqual(true, data.length > 0);
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assert.strictEqual(data.length, info.size);
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assert.strictEqual('jpeg', info.format);
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assert.strictEqual(320, info.width);
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assert.strictEqual(240, info.height);
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done();
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});
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});
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it('Load multi-page TIFF from file', function (done) {
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sharp(fixtures.inputTiffMultipage) // defaults to page 0
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.jpeg()
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.toBuffer(function (err, defaultData, defaultInfo) {
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if (err) throw err;
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assert.strictEqual(true, defaultData.length > 0);
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assert.strictEqual(defaultData.length, defaultInfo.size);
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assert.strictEqual('jpeg', defaultInfo.format);
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sharp(fixtures.inputTiffMultipage, { page: 1 }) // 50%-scale copy of page 0
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.jpeg()
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.toBuffer(function (err, scaledData, scaledInfo) {
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if (err) throw err;
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assert.strictEqual(true, scaledData.length > 0);
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assert.strictEqual(scaledData.length, scaledInfo.size);
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assert.strictEqual('jpeg', scaledInfo.format);
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assert.strictEqual(defaultInfo.width, scaledInfo.width * 2);
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assert.strictEqual(defaultInfo.height, scaledInfo.height * 2);
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done();
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});
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});
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});
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it('Load multi-page TIFF from Buffer', function (done) {
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const inputTiffBuffer = fs.readFileSync(fixtures.inputTiffMultipage);
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sharp(inputTiffBuffer) // defaults to page 0
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.jpeg()
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.toBuffer(function (err, defaultData, defaultInfo) {
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if (err) throw err;
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assert.strictEqual(true, defaultData.length > 0);
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assert.strictEqual(defaultData.length, defaultInfo.size);
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assert.strictEqual('jpeg', defaultInfo.format);
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sharp(inputTiffBuffer, { page: 1 }) // 50%-scale copy of page 0
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.jpeg()
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.toBuffer(function (err, scaledData, scaledInfo) {
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if (err) throw err;
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assert.strictEqual(true, scaledData.length > 0);
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assert.strictEqual(scaledData.length, scaledInfo.size);
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assert.strictEqual('jpeg', scaledInfo.format);
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assert.strictEqual(defaultInfo.width, scaledInfo.width * 2);
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assert.strictEqual(defaultInfo.height, scaledInfo.height * 2);
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done();
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});
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});
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});
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it('Save TIFF to Buffer', function (done) {
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sharp(fixtures.inputTiff)
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.resize(320, 240)
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.toBuffer(function (err, data, info) {
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if (err) throw err;
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assert.strictEqual(true, data.length > 0);
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assert.strictEqual(data.length, info.size);
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assert.strictEqual('tiff', info.format);
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assert.strictEqual(320, info.width);
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assert.strictEqual(240, info.height);
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done();
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});
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});
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it('Increasing TIFF quality increases file size', () =>
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sharp(fixtures.inputJpgWithLandscapeExif1)
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.resize(320, 240)
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.tiff({ quality: 40 })
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.toBuffer()
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.then(tiff40 => sharp(fixtures.inputJpgWithLandscapeExif1)
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.resize(320, 240)
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.tiff({ quality: 90 })
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.toBuffer()
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.then(tiff90 =>
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assert.strictEqual(true, tiff40.length < tiff90.length)
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)
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)
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);
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it('Invalid TIFF quality throws error', function () {
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assert.throws(function () {
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sharp().tiff({ quality: 101 });
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});
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});
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it('Missing TIFF quality does not throw error', function () {
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assert.doesNotThrow(function () {
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sharp().tiff();
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});
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});
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it('Not squashing TIFF to a bit depth of 1 should not change the file size', function (done) {
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const startSize = fs.statSync(fixtures.inputTiff8BitDepth).size;
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sharp(fixtures.inputTiff8BitDepth)
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.toColourspace('b-w') // can only squash 1 band uchar images
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.tiff({
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bitdepth: 8,
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compression: 'none',
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predictor: 'none'
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})
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.toFile(outputTiff, (err, info) => {
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if (err) throw err;
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assert.strictEqual('tiff', info.format);
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assert.strictEqual(startSize, info.size);
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fs.rm(outputTiff, done);
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});
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});
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it('Squashing TIFF to a bit depth of 1 should significantly reduce file size', function (done) {
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const startSize = fs.statSync(fixtures.inputTiff8BitDepth).size;
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sharp(fixtures.inputTiff8BitDepth)
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.toColourspace('b-w') // can only squash 1 band uchar images
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.tiff({
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bitdepth: 1,
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compression: 'none',
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predictor: 'none'
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})
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.toFile(outputTiff, (err, info) => {
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if (err) throw err;
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assert.strictEqual('tiff', info.format);
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assert(info.size < (startSize / 2));
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fs.rm(outputTiff, done);
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});
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});
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it('Invalid TIFF bitdepth value throws error', function () {
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assert.throws(function () {
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sharp().tiff({ bitdepth: 3 });
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}, /Error: Expected 1, 2, 4 or 8 for bitdepth but received 3 of type number/);
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});
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it('TIFF setting xres and yres on file', () =>
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sharp(fixtures.inputTiff)
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.resize(8, 8)
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.tiff({
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xres: 1000,
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yres: 1000
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})
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.toFile(outputTiff)
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.then(() => sharp(outputTiff)
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.metadata()
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.then(({ density }) => {
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assert.strictEqual(25400, density);
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return fs.promises.rm(outputTiff);
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})
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)
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);
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it('TIFF setting xres and yres on buffer', () =>
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sharp(fixtures.inputTiff)
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.resize(8, 8)
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.tiff({
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xres: 1000,
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yres: 1000
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})
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.toBuffer()
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.then(data => sharp(data)
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.metadata()
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.then(({ density }) => {
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assert.strictEqual(25400, density);
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})
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)
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);
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it('TIFF imputes xres and yres from withMetadataDensity if not explicitly provided', async () => {
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const data = await sharp(fixtures.inputTiff)
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.resize(8, 8)
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.tiff()
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.withMetadata({ density: 600 })
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.toBuffer();
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const { density } = await sharp(data).metadata();
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assert.strictEqual(600, density);
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});
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it('TIFF uses xres and yres over withMetadataDensity if explicitly provided', async () => {
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const data = await sharp(fixtures.inputTiff)
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.resize(8, 8)
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.tiff({ xres: 1000, yres: 1000 })
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.withMetadata({ density: 600 })
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.toBuffer();
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const { density } = await sharp(data).metadata();
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assert.strictEqual(25400, density);
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});
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it('TIFF invalid xres value should throw an error', function () {
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assert.throws(function () {
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sharp().tiff({ xres: '1000.0' });
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});
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});
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it('TIFF invalid yres value should throw an error', function () {
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assert.throws(function () {
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sharp().tiff({ yres: '1000.0' });
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});
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});
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it('TIFF lzw compression with horizontal predictor shrinks test file', function (done) {
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const startSize = fs.statSync(fixtures.inputTiffUncompressed).size;
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sharp(fixtures.inputTiffUncompressed)
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.tiff({
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compression: 'lzw',
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predictor: 'horizontal'
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})
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.toFile(outputTiff, (err, info) => {
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if (err) throw err;
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assert.strictEqual('tiff', info.format);
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assert.strictEqual(3, info.channels);
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assert(info.size < startSize);
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fs.rm(outputTiff, done);
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});
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});
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it('TIFF LZW RGBA toFile', () =>
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sharp({
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create: {
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width: 1,
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height: 1,
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channels: 4,
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background: 'red'
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}
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})
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.tiff({
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compression: 'lzw'
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})
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.toFile(outputTiff)
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.then(info => {
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assert.strictEqual(4, info.channels);
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})
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);
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it('TIFF LZW RGBA toBuffer', () =>
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sharp({
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create: {
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width: 1,
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height: 1,
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channels: 4,
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background: 'red'
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}
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})
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.tiff({
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compression: 'lzw'
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})
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.toBuffer({ resolveWithObject: true })
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.then(({ info }) => {
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assert.strictEqual(4, info.channels);
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})
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);
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it('TIFF ccittfax4 compression shrinks b-w test file', function (done) {
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const startSize = fs.statSync(fixtures.inputTiff).size;
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sharp(fixtures.inputTiff)
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.toColourspace('b-w')
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.tiff({
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bitdepth: 1,
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compression: 'ccittfax4'
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})
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.toFile(outputTiff, (err, info) => {
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if (err) throw err;
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assert.strictEqual('tiff', info.format);
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assert(info.size < startSize);
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fs.rm(outputTiff, done);
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});
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});
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it('TIFF resolutionUnit of inch (default)', async () => {
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const data = await sharp({ create: { width: 8, height: 8, channels: 3, background: 'red' } })
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.tiff()
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.toBuffer();
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const { resolutionUnit } = await sharp(data).metadata();
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assert.strictEqual(resolutionUnit, 'inch');
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});
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it('TIFF resolutionUnit of inch', async () => {
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const data = await sharp({ create: { width: 8, height: 8, channels: 3, background: 'red' } })
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.tiff({ resolutionUnit: 'inch' })
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.toBuffer();
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const { resolutionUnit } = await sharp(data).metadata();
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assert.strictEqual(resolutionUnit, 'inch');
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});
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it('TIFF resolutionUnit of cm', async () => {
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const data = await sharp({ create: { width: 8, height: 8, channels: 3, background: 'red' } })
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.tiff({ resolutionUnit: 'cm' })
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.toBuffer();
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const { resolutionUnit } = await sharp(data).metadata();
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assert.strictEqual(resolutionUnit, 'cm');
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});
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it('TIFF deflate compression with horizontal predictor shrinks test file', function (done) {
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const startSize = fs.statSync(fixtures.inputTiffUncompressed).size;
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sharp(fixtures.inputTiffUncompressed)
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.tiff({
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compression: 'deflate',
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predictor: 'horizontal'
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})
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.toFile(outputTiff, (err, info) => {
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if (err) throw err;
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assert.strictEqual('tiff', info.format);
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assert(info.size < startSize);
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fs.rm(outputTiff, done);
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});
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});
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it('TIFF deflate compression with float predictor shrinks test file', function (done) {
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const startSize = fs.statSync(fixtures.inputTiffUncompressed).size;
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sharp(fixtures.inputTiffUncompressed)
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.tiff({
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compression: 'deflate',
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predictor: 'float'
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})
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.toFile(outputTiff, (err, info) => {
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if (err) throw err;
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assert.strictEqual('tiff', info.format);
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assert(startSize > info.size);
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fs.rm(outputTiff, done);
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});
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});
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it('TIFF deflate compression without predictor shrinks test file', function (done) {
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const startSize = fs.statSync(fixtures.inputTiffUncompressed).size;
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sharp(fixtures.inputTiffUncompressed)
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.tiff({
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compression: 'deflate',
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predictor: 'none'
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})
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.toFile(outputTiff, (err, info) => {
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if (err) throw err;
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assert.strictEqual('tiff', info.format);
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assert(info.size < startSize);
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fs.rm(outputTiff, done);
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});
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});
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it('TIFF jpeg compression shrinks test file', function (done) {
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const startSize = fs.statSync(fixtures.inputTiffUncompressed).size;
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sharp(fixtures.inputTiffUncompressed)
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.tiff({
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compression: 'jpeg'
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})
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.toFile(outputTiff, (err, info) => {
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if (err) throw err;
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assert.strictEqual('tiff', info.format);
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assert(info.size < startSize);
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fs.rm(outputTiff, done);
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});
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});
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it('TIFF none compression does not throw error', function () {
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assert.doesNotThrow(function () {
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sharp().tiff({ compression: 'none' });
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});
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});
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it('TIFF lzw compression does not throw error', function () {
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assert.doesNotThrow(function () {
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sharp().tiff({ compression: 'lzw' });
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});
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});
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it('TIFF deflate compression does not throw error', function () {
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assert.doesNotThrow(function () {
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sharp().tiff({ compression: 'deflate' });
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});
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});
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it('TIFF invalid compression option throws', function () {
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assert.throws(function () {
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sharp().tiff({ compression: 0 });
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});
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});
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it('TIFF invalid compression option throws', function () {
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assert.throws(function () {
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sharp().tiff({ compression: 'a' });
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});
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});
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it('TIFF invalid predictor option throws', function () {
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assert.throws(function () {
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sharp().tiff({ predictor: 'a' });
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});
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});
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it('TIFF invalid resolutionUnit option throws', function () {
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assert.throws(function () {
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sharp().tiff({ resolutionUnit: 'none' });
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});
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});
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it('TIFF horizontal predictor does not throw error', function () {
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assert.doesNotThrow(function () {
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sharp().tiff({ predictor: 'horizontal' });
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});
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});
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it('TIFF float predictor does not throw error', function () {
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assert.doesNotThrow(function () {
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sharp().tiff({ predictor: 'float' });
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});
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});
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it('TIFF none predictor does not throw error', function () {
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assert.doesNotThrow(function () {
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sharp().tiff({ predictor: 'none' });
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});
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});
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it('TIFF tiled pyramid image without compression enlarges test file', function (done) {
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const startSize = fs.statSync(fixtures.inputTiffUncompressed).size;
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sharp(fixtures.inputTiffUncompressed)
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.tiff({
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compression: 'none',
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pyramid: true,
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tile: true,
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tileHeight: 256,
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tileWidth: 256
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})
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.toFile(outputTiff, (err, info) => {
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if (err) throw err;
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assert.strictEqual('tiff', info.format);
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assert(info.size > startSize);
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fs.rm(outputTiff, done);
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});
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});
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it('TIFF pyramid true value does not throw error', function () {
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assert.doesNotThrow(function () {
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sharp().tiff({ pyramid: true });
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});
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});
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it('Invalid TIFF pyramid value throws error', function () {
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assert.throws(function () {
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sharp().tiff({ pyramid: 'true' });
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});
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});
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it('Invalid TIFF tile value throws error', function () {
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assert.throws(function () {
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sharp().tiff({ tile: 'true' });
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});
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});
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it('TIFF tile true value does not throw error', function () {
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assert.doesNotThrow(function () {
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sharp().tiff({ tile: true });
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});
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});
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it('Valid TIFF tileHeight value does not throw error', function () {
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assert.doesNotThrow(function () {
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sharp().tiff({ tileHeight: 512 });
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});
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});
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it('Valid TIFF tileWidth value does not throw error', function () {
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assert.doesNotThrow(function () {
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sharp().tiff({ tileWidth: 512 });
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});
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});
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it('Invalid TIFF tileHeight value throws error', function () {
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assert.throws(function () {
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sharp().tiff({ tileHeight: '256' });
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});
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});
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it('Invalid TIFF tileWidth value throws error', function () {
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assert.throws(function () {
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sharp().tiff({ tileWidth: '256' });
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});
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});
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it('Invalid TIFF tileHeight value throws error', function () {
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assert.throws(function () {
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sharp().tiff({ tileHeight: 0 });
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});
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});
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it('Invalid TIFF tileWidth value throws error', function () {
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assert.throws(function () {
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sharp().tiff({ tileWidth: 0 });
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});
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});
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it('TIFF file input with invalid page fails gracefully', function (done) {
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sharp(fixtures.inputTiffMultipage, { page: 2 })
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.toBuffer(function (err) {
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assert.strictEqual(true, !!err);
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done();
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});
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});
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it('TIFF buffer input with invalid page fails gracefully', function (done) {
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sharp(fs.readFileSync(fixtures.inputTiffMultipage), { page: 2 })
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.toBuffer(function (err) {
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assert.strictEqual(true, !!err);
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done();
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});
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});
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});
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