132 lines
3.0 KiB
JavaScript
132 lines
3.0 KiB
JavaScript
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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"use strict";
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const protocol = require("devtools/shared/protocol");
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const {Arg, Option, RetVal, generateActorSpec} = protocol;
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/**
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* Type representing an ArrayBufferView, serialized fast(er).
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*
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* Don't create a new array buffer view from the parsed array on the frontend.
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* Consumers may copy the data into an existing buffer, or create a new one if
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* necesasry. For example, this avoids the need for a redundant copy when
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* populating ImageData objects, at the expense of transferring char views
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* of a pixel buffer over the protocol instead of a packed int view.
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*
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* XXX: It would be nice if on local connections (only), we could just *give*
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* the buffer directly to the front, instead of going through all this
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* serialization redundancy.
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*/
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protocol.types.addType("array-buffer-view", {
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write: (v) => "[" + Array.join(v, ",") + "]",
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read: (v) => JSON.parse(v)
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});
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/**
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* Type describing a thumbnail or screenshot in a recorded animation frame.
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*/
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protocol.types.addDictType("snapshot-image", {
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index: "number",
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width: "number",
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height: "number",
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scaling: "number",
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flipped: "boolean",
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pixels: "array-buffer-view"
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});
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/**
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* Type describing an overview of a recorded animation frame.
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*/
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protocol.types.addDictType("snapshot-overview", {
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calls: "array:function-call",
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thumbnails: "array:snapshot-image",
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screenshot: "snapshot-image"
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});
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exports.CANVAS_CONTEXTS = [
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"CanvasRenderingContext2D",
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"WebGLRenderingContext"
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];
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exports.ANIMATION_GENERATORS = [
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"requestAnimationFrame"
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];
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exports.LOOP_GENERATORS = [
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"setTimeout"
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];
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exports.DRAW_CALLS = [
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// 2D canvas
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"fill",
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"stroke",
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"clearRect",
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"fillRect",
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"strokeRect",
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"fillText",
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"strokeText",
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"drawImage",
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// WebGL
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"clear",
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"drawArrays",
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"drawElements",
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"finish",
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"flush"
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];
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exports.INTERESTING_CALLS = [
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// 2D canvas
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"save",
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"restore",
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// WebGL
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"useProgram"
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];
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const frameSnapshotSpec = generateActorSpec({
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typeName: "frame-snapshot",
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methods: {
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getOverview: {
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response: { overview: RetVal("snapshot-overview") }
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},
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generateScreenshotFor: {
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request: { call: Arg(0, "function-call") },
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response: { screenshot: RetVal("snapshot-image") }
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},
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},
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});
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exports.frameSnapshotSpec = frameSnapshotSpec;
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const canvasSpec = generateActorSpec({
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typeName: "canvas",
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methods: {
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setup: {
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request: { reload: Option(0, "boolean") },
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oneway: true
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},
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finalize: {
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oneway: true
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},
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isInitialized: {
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response: { initialized: RetVal("boolean") }
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},
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isRecording: {
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response: { recording: RetVal("boolean") }
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},
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recordAnimationFrame: {
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response: { snapshot: RetVal("nullable:frame-snapshot") }
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},
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stopRecordingAnimationFrame: {
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oneway: true
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},
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}
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});
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exports.canvasSpec = canvasSpec;
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