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/**
* Creates a new instance of VideoRecorder.
*
* @class
* @name VideoRecorder
* @classdesc contains methods to record video for tests
* @arg {object} [opts] - Options.
* @arg {object} [opts._process] - Injected `process` module.
* @arg {object} [opts._which] - Injected `which` module.
* @arg {object} [opts._spawn] - Injected `spawn` module.
* @property {boolean} [isRunning=false] - flag is video recorder running or no
* @property {?string} [filePath=null] - path video file
*/
var path = require("path");
var spawn = require("cross-spawn");
var which = require("which");
var U = require("glace-utils");
var LOG = U.logger;
var VideoRecorder = function (opts) {
opts = U.defVal(opts, {});
this.isRunning = false;
this.filePath = null;
this._process = null;
this._recordOpts = null;
this.__process = U.defVal(opts._process, process);
this.__which = U.defVal(opts._which, which);
this.__spawn = U.defVal(opts._spawn, spawn);
};
/**
* Configures video recorder.
*
* @method
* @arg {object} [opts] - recorder configuration
* @arg {string} [opts.path] - video file path
* @arg {number} [opts.fps=30] - video framerate
* @arg {number} [opts.width=1024] - video width
* @arg {number} [opts.height=768] - video height
* @arg {number} [opts.x=0] - `X`-offset on display
* @arg {number} [opts.y=0] - `Y`-offset on display
*/
VideoRecorder.prototype.configure = function (opts) {
opts = U.defVal(opts, {});
opts.fps = U.defVal(opts.fps, 30);
opts.width = U.defVal(opts.width, 1024);
opts.height = U.defVal(opts.height, 768);
opts.x = U.defVal(opts.x, 0);
opts.y = U.defVal(opts.y, 0);
opts.size = opts.width + "x" + opts.height;
this.filePath = U.defVal(opts.path, path.resolve(U.cwd, "out.avi"));
if (this.__process.platform === "win32") {
this.__which.sync("ffmpeg");
this._recordCmd = "ffmpeg";
this._recordOpts = [ "-y",
"-loglevel", "quiet",
"-video_size", opts.size,
"-offset_x", opts.x,
"-offset_y", opts.y,
"-draw_mouse", 0,
"-framerate", opts.fps,
"-f", "gdigrab",
"-i", "desktop",
"-vcodec", "libx264",
this.filePath ];
} else if (this.__process.platform === "linux") {
Iif (this.__which.sync("avconv", { nothrow: true })) {
this._recordCmd = "avconv";
} else Iif (this.__which.sync("ffmpeg", { nothrow: true })) {
this._recordCmd = "ffmpeg";
} else {
throw new Error("not found: avconv or ffmpeg");
};
this._recordOpts = [ "-y",
"-loglevel", "quiet",
"-f", "x11grab",
"-r", opts.fps,
"-s", opts.size,
"-i", `${process.env.DISPLAY}+${opts.x},${opts.y}`,
"-codec", "libx264",
this.filePath ];
} else if (this.__process.platform === "darwin") {
this.__which.sync("ffmpeg");
this._recordCmd = "ffmpeg";
this._recordOpts = [ "-y",
"-loglevel", "quiet",
"-f", "avfoundation",
"-r", opts.fps,
"-i", "1:",
"-vsync", 2,
this.filePath ];
} else {
throw new Error("Video capture isn't supported " +
`on platform '${this.__process.platform}'`);
};
};
/**
* Starts video recorder.
*
* @method
* @throws {Error} if video recorder is started already
* @throws {Error} if video recorder isn't configured yet
*/
VideoRecorder.prototype.start = function () {
if (this.isRunning) return;
if (!this._recordOpts)
throw new Error("Video recorder isn't configured yet");
this._process = this.__spawn(this._recordCmd, this._recordOpts,
{ killSignal: "SIGINT" });
this.isRunning = true;
};
/**
* Stops video recorder.
*
* @method
* @throws {Error} if video recorder isn't started yet
*/
VideoRecorder.prototype.stop = function () {
if (!this.isRunning) return;
return new Promise((resolve, reject) => {
this._process.once("exit", (code, signal) => {
LOG.debug(`${this._recordCmd} was stopped with code ${code} and signal ${signal}`);
this.isRunning = false;
resolve();
});
this._process.once("error", reject);
var result = this._process.kill("SIGINT");
if (!result) reject(new Error(`Oops! Can't kill ${this._recordCmd}`));
});
};
module.exports = VideoRecorder;
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