From 36d22d82aa202bb199967e9512281e9a53db42c9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 21:33:14 +0200 Subject: Adding upstream version 115.7.0esr. Signed-off-by: Daniel Baumann --- image/test/unit/test_encoder_png.js | 263 ++++++++++++++++++++++++++++++++++++ 1 file changed, 263 insertions(+) create mode 100644 image/test/unit/test_encoder_png.js (limited to 'image/test/unit/test_encoder_png.js') diff --git a/image/test/unit/test_encoder_png.js b/image/test/unit/test_encoder_png.js new file mode 100644 index 0000000000..73e91f573f --- /dev/null +++ b/image/test/unit/test_encoder_png.js @@ -0,0 +1,263 @@ +/* + * Test for PNG encoding in ImageLib + * + */ + +var png1A = { + // A 3x3 image, rows are red, green, blue. + // RGB format, transparency defaults. + + transparency: null, + + frames: [ + { + width: 3, + height: 3, + + format: Ci.imgIEncoder.INPUT_FORMAT_RGB, + stride: 9, + + pixels: [ + 255, 0, 0, 255, 0, 0, 255, 0, 0, 0, 255, 0, 0, 255, 0, 0, 255, 0, 0, 0, + 255, 0, 0, 255, 0, 0, 255, + ], + }, + ], + expected: + "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAMAAAADCAIAAADZSiLoAAAAFElEQVQIW2P8zwAFjAwwJiMDjAkANiQDAUpvlioAAAAASUVORK5CYII=", +}; + +var png1B = { + // A 3x3 image, rows are red, green, blue. + // RGB format, transparency=none. + + transparency: "none", + + frames: [ + { + width: 3, + height: 3, + + format: Ci.imgIEncoder.INPUT_FORMAT_RGB, + stride: 9, + + pixels: [ + 255, 0, 0, 255, 0, 0, 255, 0, 0, 0, 255, 0, 0, 255, 0, 0, 255, 0, 0, 0, + 255, 0, 0, 255, 0, 0, 255, + ], + }, + ], + expected: + "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAMAAAADCAIAAADZSiLoAAAAFElEQVQIW2P8zwAFjAwwJiMDjAkANiQDAUpvlioAAAAASUVORK5CYII=", +}; + +var png2A = { + // A 3x3 image, rows are: red, green, blue. Columns are: 0%, 33%, 66% transparent. + + transparency: null, + + frames: [ + { + width: 3, + height: 3, + + format: Ci.imgIEncoder.INPUT_FORMAT_RGBA, + stride: 12, + + pixels: [ + 255, 0, 0, 255, 255, 0, 0, 170, 255, 0, 0, 85, 0, 255, 0, 255, 0, 255, + 0, 170, 0, 255, 0, 85, 0, 0, 255, 255, 0, 0, 255, 170, 0, 0, 255, 85, + ], + }, + ], + expected: + "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAMAAAADCAYAAABWKLW/AAAAGUlEQVQIW2P8z8AARAyrQZgRyETiMPyHcwDKCwoAGxxLEQAAAABJRU5ErkJggg==", +}; + +var png2B = { + // A 3x3 image, rows are: red, green, blue. Columns are: 0%, 33%, 66% transparent, + // but transparency will be ignored. + + transparency: "none", + + frames: [ + { + width: 3, + height: 3, + + format: Ci.imgIEncoder.INPUT_FORMAT_RGBA, + stride: 12, + + pixels: [ + 255, 0, 0, 255, 255, 0, 0, 170, 255, 0, 0, 85, 0, 255, 0, 255, 0, 255, + 0, 170, 0, 255, 0, 85, 0, 0, 255, 255, 0, 0, 255, 170, 0, 0, 255, 85, + ], + }, + ], + expected: + "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAMAAAADCAIAAADZSiLoAAAAFElEQVQIW2P8zwAFjAwwJiMDjAkANiQDAUpvlioAAAAASUVORK5CYII=", +}; + +// Main test entry point. +function run_test() { + dump("Checking png1A...\n"); + run_test_for(png1A); + dump("Checking png1B...\n"); + run_test_for(png1B); + dump("Checking png2A...\n"); + run_test_for(png2A); + dump("Checking png2B...\n"); + run_test_for(png2B); +} + +function run_test_for(input) { + var encoder, dataURL; + + encoder = encodeImage(input); + dataURL = makeDataURL(encoder, "image/png"); + Assert.equal(dataURL, input.expected); + + encoder = encodeImageAsync(input); + dataURL = makeDataURLFromAsync(encoder, "image/png", input.expected); +} + +function encodeImage(input) { + var encoder = + Cc["@mozilla.org/image/encoder;2?type=image/png"].createInstance(); + encoder.QueryInterface(Ci.imgIEncoder); + + var options = ""; + if (input.transparency) { + options += "transparency=" + input.transparency; + } + + var frame = input.frames[0]; + encoder.initFromData( + frame.pixels, + frame.pixels.length, + frame.width, + frame.height, + frame.stride, + frame.format, + options + ); + return encoder; +} + +function _encodeImageAsyncFactory(frame, options, encoder) { + function finishEncode() { + encoder.addImageFrame( + frame.pixels, + frame.pixels.length, + frame.width, + frame.height, + frame.stride, + frame.format, + options + ); + encoder.endImageEncode(); + } + return finishEncode; +} + +function encodeImageAsync(input) { + var encoder = + Cc["@mozilla.org/image/encoder;2?type=image/png"].createInstance(); + encoder.QueryInterface(Ci.imgIEncoder); + + var options = ""; + if (input.transparency) { + options += "transparency=" + input.transparency; + } + + var frame = input.frames[0]; + encoder.startImageEncode(frame.width, frame.height, frame.format, options); + + do_timeout(50, _encodeImageAsyncFactory(frame, options, encoder)); + return encoder; +} + +function makeDataURL(encoder, mimetype) { + var rawStream = encoder.QueryInterface(Ci.nsIInputStream); + + var stream = Cc["@mozilla.org/binaryinputstream;1"].createInstance(); + stream.QueryInterface(Ci.nsIBinaryInputStream); + + stream.setInputStream(rawStream); + + var bytes = stream.readByteArray(stream.available()); // returns int[] + + var base64String = toBase64(bytes); + + return "data:" + mimetype + ";base64," + base64String; +} + +function makeDataURLFromAsync(encoder, mimetype, expected) { + do_test_pending(); + var rawStream = encoder.QueryInterface(Ci.nsIAsyncInputStream); + + var currentThread = + Cc["@mozilla.org/thread-manager;1"].getService().currentThread; + + var bytes = []; + + var binarystream = Cc["@mozilla.org/binaryinputstream;1"].createInstance(); + binarystream.QueryInterface(Ci.nsIBinaryInputStream); + + var asyncReader = { + onInputStreamReady(stream) { + binarystream.setInputStream(stream); + var available = 0; + try { + available = stream.available(); + } catch (e) {} + + if (available > 0) { + bytes = bytes.concat(binarystream.readByteArray(available)); + stream.asyncWait(this, 0, 0, currentThread); + } else { + var base64String = toBase64(bytes); + var dataURL = "data:" + mimetype + ";base64," + base64String; + Assert.equal(dataURL, expected); + do_test_finished(); + } + }, + }; + rawStream.asyncWait(asyncReader, 0, 0, currentThread); +} + +/* toBase64 copied from extensions/xml-rpc/src/nsXmlRpcClient.js */ + +/* Convert data (an array of integers) to a Base64 string. */ +const toBase64Table = + // eslint-disable-next-line no-useless-concat + "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz" + "0123456789+/"; +const base64Pad = "="; +function toBase64(data) { + var result = ""; + var length = data.length; + var i; + // Convert every three bytes to 4 ascii characters. + for (i = 0; i < length - 2; i += 3) { + result += toBase64Table[data[i] >> 2]; + result += toBase64Table[((data[i] & 0x03) << 4) + (data[i + 1] >> 4)]; + result += toBase64Table[((data[i + 1] & 0x0f) << 2) + (data[i + 2] >> 6)]; + result += toBase64Table[data[i + 2] & 0x3f]; + } + + // Convert the remaining 1 or 2 bytes, pad out to 4 characters. + if (length % 3) { + i = length - (length % 3); + result += toBase64Table[data[i] >> 2]; + if (length % 3 == 2) { + result += toBase64Table[((data[i] & 0x03) << 4) + (data[i + 1] >> 4)]; + result += toBase64Table[(data[i + 1] & 0x0f) << 2]; + result += base64Pad; + } else { + result += toBase64Table[(data[i] & 0x03) << 4]; + result += base64Pad + base64Pad; + } + } + + return result; +} -- cgit v1.2.3