/* * Test for APNG encoding in ImageLib * */ // dispose=[none|background|previous] // blend=[source|over] var apng1A = { // A 3x3 image with 3 frames, alternating red, green, blue. RGB format. width: 3, height: 3, skipFirstFrame: false, format: Ci.imgIEncoder.INPUT_FORMAT_RGB, transparency: null, plays: 0, frames: [ { // frame #1 width: 3, height: 3, x_offset: 0, y_offset: 0, dispose: "none", blend: "source", delay: 500, format: Ci.imgIEncoder.INPUT_FORMAT_RGB, stride: 9, transparency: null, pixels: [ 255, 0, 0, 255, 0, 0, 255, 0, 0, 255, 0, 0, 255, 0, 0, 255, 0, 0, 255, 0, 0, 255, 0, 0, 255, 0, 0, ], }, { // frame #2 width: 3, height: 3, x_offset: 0, y_offset: 0, dispose: "none", blend: "source", delay: 500, format: Ci.imgIEncoder.INPUT_FORMAT_RGB, stride: 9, transparency: null, pixels: [ 0, 255, 0, 0, 255, 0, 0, 255, 0, 0, 255, 0, 0, 255, 0, 0, 255, 0, 0, 255, 0, 0, 255, 0, 0, 255, 0, ], }, { // frame #3 width: 3, height: 3, x_offset: 0, y_offset: 0, dispose: "none", blend: "source", delay: 500, format: Ci.imgIEncoder.INPUT_FORMAT_RGB, stride: 9, transparency: null, pixels: [ 0, 0, 255, 0, 0, 255, 0, 0, 255, 0, 0, 255, 0, 0, 255, 0, 0, 255, 0, 0, 255, 0, 0, 255, 0, 0, 255, ], }, ], expected: "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAMAAAADCAIAAADZSiLoAAAACGFjVEwAAAADAAAAAM7tusAAAAAaZmNUTAAAAAAAAAADAAAAAwAAAAAAAAAAAfQD6AAAdRYgGAAAABBJREFUCJlj+M/AAEEMWFgAj44I+H2CySsAAAAaZmNUTAAAAAEAAAADAAAAAwAAAAAAAAAAAfQD6AAA7mXKzAAAABNmZEFUAAAAAgiZY2D4zwBFWFgAhpcI+I731VcAAAAaZmNUTAAAAAMAAAADAAAAAwAAAAAAAAAAAfQD6AAAA/MZJQAAABNmZEFUAAAABAiZY2Bg+A9DmCwAfaAI+AGmQVoAAAAASUVORK5CYII=", }; var apng1B = { // A 3x3 image with 3 frames, alternating red, green, blue. RGBA format. width: 3, height: 3, skipFirstFrame: false, format: Ci.imgIEncoder.INPUT_FORMAT_RGBA, transparency: null, plays: 0, frames: [ { // frame #1 width: 3, height: 3, x_offset: 0, y_offset: 0, dispose: "none", blend: "source", delay: 500, format: Ci.imgIEncoder.INPUT_FORMAT_RGBA, stride: 12, pixels: [ 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, ], }, { // frame #2 width: 3, height: 3, x_offset: 0, y_offset: 0, dispose: "none", blend: "source", delay: 500, format: Ci.imgIEncoder.INPUT_FORMAT_RGBA, stride: 12, pixels: [ 0, 255, 0, 255, 0, 255, 0, 255, 0, 255, 0, 255, 0, 255, 0, 255, 0, 255, 0, 255, 0, 255, 0, 255, 0, 255, 0, 255, 0, 255, 0, 255, 0, 255, 0, 255, ], }, { // frame #3 width: 3, height: 3, x_offset: 0, y_offset: 0, dispose: "none", blend: "source", delay: 500, format: Ci.imgIEncoder.INPUT_FORMAT_RGBA, stride: 12, pixels: [ 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255, ], }, ], expected: "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAMAAAADCAYAAABWKLW/AAAACGFjVEwAAAADAAAAAM7tusAAAAAaZmNUTAAAAAAAAAADAAAAAwAAAAAAAAAAAfQD6AAAdRYgGAAAABFJREFUCJlj+M/A8B+GGXByAF3XEe/CoiJ1AAAAGmZjVEwAAAABAAAAAwAAAAMAAAAAAAAAAAH0A+gAAO5lyswAAAASZmRBVAAAAAIImWNg+I8EcXIAVOAR77Vyl9QAAAAaZmNUTAAAAAMAAAADAAAAAwAAAAAAAAAAAfQD6AAAA/MZJQAAABRmZEFUAAAABAiZY2Bg+P8fgXFxAEvpEe8rClxSAAAAAElFTkSuQmCC", }; var apng1C = { // A 3x3 image with 3 frames, alternating red, green, blue. RGBA format. // The first frame is skipped, so it will only flash green/blue (or static red in an APNG-unaware viewer) width: 3, height: 3, skipFirstFrame: true, format: Ci.imgIEncoder.INPUT_FORMAT_RGBA, transparency: null, plays: 0, frames: [ { // frame #1 width: 3, height: 3, x_offset: 0, y_offset: 0, dispose: "none", blend: "source", delay: 500, format: Ci.imgIEncoder.INPUT_FORMAT_RGBA, stride: 12, pixels: [ 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, ], }, { // frame #2 width: 3, height: 3, x_offset: 0, y_offset: 0, dispose: "none", blend: "source", delay: 500, format: Ci.imgIEncoder.INPUT_FORMAT_RGBA, stride: 12, pixels: [ 0, 255, 0, 255, 0, 255, 0, 255, 0, 255, 0, 255, 0, 255, 0, 255, 0, 255, 0, 255, 0, 255, 0, 255, 0, 255, 0, 255, 0, 255, 0, 255, 0, 255, 0, 255, ], }, { // frame #3 width: 3, height: 3, x_offset: 0, y_offset: 0, dispose: "none", blend: "source", delay: 500, format: Ci.imgIEncoder.INPUT_FORMAT_RGBA, stride: 12, pixels: [ 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255, ], }, ], expected: "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAMAAAADCAYAAABWKLW/AAAACGFjVEwAAAACAAAAAPONk3AAAAARSURBVAiZY/jPwPAfhhlwcgBd1xHvwqIidQAAABpmY1RMAAAAAAAAAAMAAAADAAAAAAAAAAAB9APoAAB1FiAYAAAAEmZkQVQAAAABCJljYPiPBHFyAFTgEe+kD/2tAAAAGmZjVEwAAAACAAAAAwAAAAMAAAAAAAAAAAH0A+gAAJiA8/EAAAAUZmRBVAAAAAMImWNgYPj/H4FxcQBL6RHvC5ggGQAAAABJRU5ErkJggg==", }; var apng2A = { // A 3x3 image with 3 frames, alternating red, green, blue. RGBA format. // blend = over mode // (The green frame is a horizontal gradient, and the blue frame is a // vertical gradient. They stack as they animate.) width: 3, height: 3, skipFirstFrame: false, format: Ci.imgIEncoder.INPUT_FORMAT_RGBA, transparency: null, plays: 0, frames: [ { // frame #1 width: 3, height: 3, x_offset: 0, y_offset: 0, dispose: "none", blend: "source", delay: 500, format: Ci.imgIEncoder.INPUT_FORMAT_RGBA, stride: 12, pixels: [ 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, ], }, { // frame #2 width: 3, height: 3, x_offset: 0, y_offset: 0, dispose: "none", blend: "over", delay: 500, format: Ci.imgIEncoder.INPUT_FORMAT_RGBA, stride: 12, pixels: [ 0, 255, 0, 255, 0, 255, 0, 180, 0, 255, 0, 75, 0, 255, 0, 255, 0, 255, 0, 180, 0, 255, 0, 75, 0, 255, 0, 255, 0, 255, 0, 180, 0, 255, 0, 75, ], }, { // frame #3 width: 3, height: 3, x_offset: 0, y_offset: 0, dispose: "none", blend: "over", delay: 500, format: Ci.imgIEncoder.INPUT_FORMAT_RGBA, stride: 12, pixels: [ 0, 0, 255, 75, 0, 0, 255, 75, 0, 0, 255, 75, 0, 0, 255, 180, 0, 0, 255, 180, 0, 0, 255, 180, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255, ], }, ], expected: "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAMAAAADCAYAAABWKLW/AAAACGFjVEwAAAADAAAAAM7tusAAAAAaZmNUTAAAAAAAAAADAAAAAwAAAAAAAAAAAfQD6AAAdRYgGAAAABFJREFUCJlj+M/A8B+GGXByAF3XEe/CoiJ1AAAAGmZjVEwAAAABAAAAAwAAAAMAAAAAAAAAAAH0A+gAAZli+loAAAAcZmRBVAAAAAIImWNg+M/wn+E/wxaG/wzeDDg5ACeGDvKVa3pyAAAAGmZjVEwAAAADAAAAAwAAAAMAAAAAAAAAAAH0A+gAAXT0KbMAAAAcZmRBVAAAAAQImWNgYPjvjcAM/7cgMMP//zAMAPqkDvLn1m3SAAAAAElFTkSuQmCC", }; var apng2B = { // A 3x3 image with 3 frames, alternating red, green, blue. RGBA format. // blend = over, dispose = background // (The green frame is a horizontal gradient, and the blue frame is a // vertical gradient. Each frame is displayed individually, blended to // whatever the background is.) width: 3, height: 3, skipFirstFrame: false, format: Ci.imgIEncoder.INPUT_FORMAT_RGBA, transparency: null, plays: 0, frames: [ { // frame #1 width: 3, height: 3, x_offset: 0, y_offset: 0, dispose: "background", blend: "source", delay: 500, format: Ci.imgIEncoder.INPUT_FORMAT_RGBA, stride: 12, pixels: [ 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, ], }, { // frame #2 width: 3, height: 3, x_offset: 0, y_offset: 0, dispose: "background", blend: "over", delay: 500, format: Ci.imgIEncoder.INPUT_FORMAT_RGBA, stride: 12, pixels: [ 0, 255, 0, 255, 0, 255, 0, 180, 0, 255, 0, 75, 0, 255, 0, 255, 0, 255, 0, 180, 0, 255, 0, 75, 0, 255, 0, 255, 0, 255, 0, 180, 0, 255, 0, 75, ], }, { // frame #3 width: 3, height: 3, x_offset: 0, y_offset: 0, dispose: "background", blend: "over", delay: 500, format: Ci.imgIEncoder.INPUT_FORMAT_RGBA, stride: 12, pixels: [ 0, 0, 255, 75, 0, 0, 255, 75, 0, 0, 255, 75, 0, 0, 255, 180, 0, 0, 255, 180, 0, 0, 255, 180, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255, ], }, ], expected: "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAMAAAADCAYAAABWKLW/AAAACGFjVEwAAAADAAAAAM7tusAAAAAaZmNUTAAAAAAAAAADAAAAAwAAAAAAAAAAAfQD6AEAbA0RWQAAABFJREFUCJlj+M/A8B+GGXByAF3XEe/CoiJ1AAAAGmZjVEwAAAABAAAAAwAAAAMAAAAAAAAAAAH0A+gBAYB5yxsAAAAcZmRBVAAAAAIImWNg+M/wn+E/wxaG/wzeDDg5ACeGDvKVa3pyAAAAGmZjVEwAAAADAAAAAwAAAAMAAAAAAAAAAAH0A+gBAW3vGPIAAAAcZmRBVAAAAAQImWNgYPjvjcAM/7cgMMP//zAMAPqkDvLn1m3SAAAAAElFTkSuQmCC", }; var apng3 = { // A 3x3 image with 4 frames. First frame is white, then 1x1 frames draw a diagonal line width: 3, height: 3, skipFirstFrame: false, format: Ci.imgIEncoder.INPUT_FORMAT_RGBA, transparency: null, plays: 0, frames: [ { // frame #1 width: 3, height: 3, x_offset: 0, y_offset: 0, dispose: "none", blend: "source", delay: 500, format: Ci.imgIEncoder.INPUT_FORMAT_RGBA, stride: 12, pixels: [ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, ], }, { // frame #2 width: 1, height: 1, x_offset: 0, y_offset: 0, dispose: "none", blend: "source", delay: 500, format: Ci.imgIEncoder.INPUT_FORMAT_RGBA, stride: 12, pixels: [0, 0, 0, 255], }, { // frame #3 width: 1, height: 1, x_offset: 1, y_offset: 1, dispose: "none", blend: "source", delay: 500, format: Ci.imgIEncoder.INPUT_FORMAT_RGBA, stride: 12, pixels: [0, 0, 0, 255], }, { // frame #4 width: 1, height: 1, x_offset: 2, y_offset: 2, dispose: "none", blend: "source", delay: 500, format: Ci.imgIEncoder.INPUT_FORMAT_RGBA, stride: 12, pixels: [0, 0, 0, 255], }, ], expected: "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAMAAAADCAYAAABWKLW/AAAACGFjVEwAAAAEAAAAAHzNZtAAAAAaZmNUTAAAAAAAAAADAAAAAwAAAAAAAAAAAfQD6AAAdRYgGAAAAA5JREFUCJlj+I8EGHByALuHI91kueRqAAAAGmZjVEwAAAABAAAAAQAAAAEAAAAAAAAAAAH0A+gAADJXfawAAAARZmRBVAAAAAIImWNgYGD4DwABBAEAbr5mpgAAABpmY1RMAAAAAwAAAAEAAAABAAAAAQAAAAEB9APoAAC4OHoxAAAAEWZkQVQAAAAECJljYGBg+A8AAQQBAJZ8LRAAAAAaZmNUTAAAAAUAAAABAAAAAQAAAAIAAAACAfQD6AAA/fh01wAAABFmZEFUAAAABgiZY2BgYPgPAAEEAQB3Eum9AAAAAElFTkSuQmCC", }; // Main test entry point. function run_test() { dump("Checking apng1A...\n"); run_test_for(apng1A); dump("Checking apng1B...\n"); run_test_for(apng1B); dump("Checking apng1C...\n"); run_test_for(apng1C); dump("Checking apng2A...\n"); run_test_for(apng2A); dump("Checking apng2B...\n"); run_test_for(apng2B); dump("Checking apng3...\n"); run_test_for(apng3); } function run_test_for(input) { var encoder, dataURL; encoder = encodeImage(input); dataURL = makeDataURL(encoder, "image/png"); Assert.equal(dataURL, 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; } options += ";frames=" + input.frames.length; options += ";skipfirstframe=" + (input.skipFirstFrame ? "yes" : "no"); options += ";plays=" + input.plays; encoder.startImageEncode(input.width, input.height, input.format, options); for (var i = 0; i < input.frames.length; i++) { var frame = input.frames[i]; options = ""; if (frame.transparency) { options += "transparency=" + input.transparency; } options += ";delay=" + frame.delay; options += ";dispose=" + frame.dispose; options += ";blend=" + frame.blend; if (frame.x_offset > 0) { options += ";xoffset=" + frame.x_offset; } if (frame.y_offset > 0) { options += ";yoffset=" + frame.y_offset; } encoder.addImageFrame( frame.pixels, frame.pixels.length, frame.width, frame.height, frame.stride, frame.format, options ); } encoder.endImageEncode(); 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; } /* 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; }