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-rw-r--r--image/test/unit/test_encoder_apng.js1097
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diff --git a/image/test/unit/test_encoder_apng.js b/image/test/unit/test_encoder_apng.js
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+++ b/image/test/unit/test_encoder_apng.js
@@ -0,0 +1,1097 @@
+/*
+ * 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;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-15 22:42:17 +0000