mirror of
https://github.com/jech/galene.git
synced 2024-11-22 08:35:57 +01:00
Rework filters.
Make it possible to attach filters dynamically. Work around bugs in Firefox.
This commit is contained in:
Juliusz Chroboczek
parent
49bcc342ed
commit
b24bd5c0ed
1 changed files with 95 additions and 25 deletions
120
static/galene.js
120
static/galene.js
|
|
@ -778,22 +778,36 @@ async function setMaxVideoThroughput(c, bps) {
|
|||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* @typedef {Object} filterDefinition
|
||||
* @property {string} [description]
|
||||
* @property {string} [contextType]
|
||||
* @property {(this: Filter, src: CanvasImageSource, width: number, height: number, ctx: RenderingContext) => boolean} f
|
||||
*/
|
||||
|
||||
/**
|
||||
* @param {MediaStream} stream
|
||||
* @param {(this: Filter, src: CanvasImageSource, dest: HTMLCanvasElement) => boolean} f
|
||||
* @param {filterDefinition} definition
|
||||
* @constructor
|
||||
*/
|
||||
function Filter(stream, f) {
|
||||
function Filter(stream, definition) {
|
||||
/** @ts-ignore */
|
||||
if(!HTMLCanvasElement.prototype.captureStream) {
|
||||
throw new Error('Filters are not supported on this platform');
|
||||
}
|
||||
|
||||
/** @type {MediaStream} */
|
||||
this.inputStream = stream;
|
||||
/** @type {(this: Filter, src: CanvasImageSource, dest: HTMLCanvasElement) => boolean} */
|
||||
this.f = f;
|
||||
/** @type {filterDefinition} */
|
||||
this.definition = definition;
|
||||
/** @type {number} */
|
||||
this.frameRate = 30;
|
||||
/** @type {HTMLVideoElement} */
|
||||
this.video = document.createElement('video');
|
||||
/** @type {HTMLCanvasElement} */
|
||||
this.canvas = document.createElement('canvas');
|
||||
/** @type {any} */
|
||||
this.context = this.canvas.getContext(definition.contextType || '2d');
|
||||
/** @type {MediaStream} */
|
||||
this.captureStream = null;
|
||||
/** @type {MediaStream} */
|
||||
|
|
@ -802,9 +816,18 @@ function Filter(stream, f) {
|
|||
this.timer = null;
|
||||
/** @type {number} */
|
||||
this.count = 0;
|
||||
/** @type {boolean} */
|
||||
this.fixedFramerate = false;
|
||||
|
||||
/** @ts-ignore */
|
||||
this.captureStream = this.canvas.captureStream(0);
|
||||
/** @ts-ignore */
|
||||
if(!this.captureStream.getTracks()[0].requestFrame) {
|
||||
console.warn('captureFrame not supported, using fixed framerate');
|
||||
/** @ts-ignore */
|
||||
this.captureStream = this.canvas.captureStream(this.frameRate);
|
||||
this.fixedFramerate = true;
|
||||
}
|
||||
|
||||
this.outputStream = new MediaStream();
|
||||
this.outputStream.addTrack(this.captureStream.getTracks()[0]);
|
||||
|
|
@ -837,10 +860,11 @@ Filter.prototype.draw = function() {
|
|||
}
|
||||
this.count++;
|
||||
|
||||
this.canvas.width = this.video.videoWidth;
|
||||
this.canvas.height = this.video.videoHeight;
|
||||
let ok = this.f.call(this, this.video, this.canvas);
|
||||
if(ok) {
|
||||
let ok = this.definition.f.call(this, this.video,
|
||||
this.video.videoWidth,
|
||||
this.video.videoHeight,
|
||||
this.context);
|
||||
if(ok && !this.fixedFramerate) {
|
||||
/** @ts-ignore */
|
||||
this.captureStream.getTracks()[0].requestFrame();
|
||||
}
|
||||
|
|
@ -855,20 +879,65 @@ Filter.prototype.stop = function() {
|
|||
};
|
||||
|
||||
/**
|
||||
* @type {Object.<string, ((this: Filter, src: CanvasImageSource, dest: HTMLCanvasElement) => boolean)>}
|
||||
* @param {Stream} c
|
||||
* @param {Filter} f
|
||||
*/
|
||||
function setFilter(c, f) {
|
||||
if(!f) {
|
||||
let filter = c.userdata.filter;
|
||||
if(!(filter instanceof Filter))
|
||||
throw new Error('userdata.filter is not a filter');
|
||||
if(c.userdata.filter) {
|
||||
c.stream = c.userdata.filter.inputStream;
|
||||
c.userdata.filter.stop();
|
||||
c.userdata.filter = null;
|
||||
}
|
||||
if(!c.onclose) {
|
||||
console.warn("onclose not set, this shouldn't happen");
|
||||
c.onclose = null;
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
if(c.userdata.filter)
|
||||
setFilter(c, null);
|
||||
|
||||
if(c.onclose)
|
||||
throw new Error('onclose already taken');
|
||||
if(f.inputStream != c.stream)
|
||||
throw new Error('Setting filter for wrong stream');
|
||||
c.stream = f.outputStream;
|
||||
c.userdata.filter = f;
|
||||
c.onclose = () => setFilter(c, null);
|
||||
}
|
||||
|
||||
/**
|
||||
* @type {Object.<string,filterDefinition>}
|
||||
*/
|
||||
let filters = {
|
||||
'mirror-h': function(video, canvas) {
|
||||
let ctx = canvas.getContext('2d');
|
||||
ctx.scale(-1, 1);
|
||||
ctx.drawImage(video, -canvas.width, 0);
|
||||
return true;
|
||||
'mirror-h': {
|
||||
description: "Horizontal mirror",
|
||||
f: function(src, width, height, ctx) {
|
||||
if(!(ctx instanceof CanvasRenderingContext2D))
|
||||
throw new Error('bad context type');
|
||||
ctx.canvas.width = width;
|
||||
ctx.canvas.height = height;
|
||||
ctx.scale(-1, 1);
|
||||
ctx.drawImage(src, -width, 0);
|
||||
return true;
|
||||
},
|
||||
},
|
||||
'mirror-v': function(video, canvas) {
|
||||
let ctx = canvas.getContext('2d');
|
||||
ctx.scale(1, -1);
|
||||
ctx.drawImage(video, 0, -canvas.height);
|
||||
return true;
|
||||
'mirror-v': {
|
||||
description: "Vertical mirror",
|
||||
f: function(src, width, height, ctx) {
|
||||
if(!(ctx instanceof CanvasRenderingContext2D))
|
||||
throw new Error('bad context type');
|
||||
ctx.canvas.width = width;
|
||||
ctx.canvas.height = height;
|
||||
ctx.scale(1, -1);
|
||||
ctx.drawImage(src, 0, -height);
|
||||
return true;
|
||||
},
|
||||
},
|
||||
};
|
||||
|
||||
|
|
@ -933,14 +1002,15 @@ async function addLocalMedia(id) {
|
|||
let c = newUpStream(id);
|
||||
|
||||
c.kind = 'local';
|
||||
c.stream = stream;
|
||||
|
||||
if(filter) {
|
||||
let f = new Filter(stream, filter);
|
||||
c.stream = f.outputStream;
|
||||
c.onclose = function() {
|
||||
f.stop();
|
||||
try {
|
||||
let f = new Filter(stream, filter);
|
||||
setFilter(c, f);
|
||||
} catch(e) {
|
||||
displayWarning(e);
|
||||
}
|
||||
} else {
|
||||
c.stream = stream;
|
||||
}
|
||||
|
||||
let mute = getSettings().localMute;
|
||||
|
|
|
|||
Loading…
Reference in a new issue