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codecview.js
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codecview.js
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const addFilter = require('./utils').addFilter;
const registerFilter = require('./utils').registerFilter;
/**
* Augment FfmpegCommand with the codecview function.
*
*
* @example
* ffmpeg().codecview()
* ... // call filter configuration functions
* .build() // end filter configuration
* ...
* .applyFilters() // called once all filters have been configured
*
* @param {FfmpegCommand} ffmpegCommand The fluent-ffmpeg constructor.
* @return {FfmpegCommand} The ffmpegCommand augmented with the codecview function.
*/
function codecview(ffmpegCommand) {
registerFilter(ffmpegCommand, 'codecview', function() {
return new CodecviewFilter(this);
});
return ffmpegCommand;
}
/**
* Class exposing methods to configure the vstack filter in a builder pattern way.
*
* See {@link http://ffmpeg.org/ffmpeg-filters.html#vstack} for a description
* of each configuration option.
*/
class CodecviewFilter {
/**
* @param {FfmpegCommand} ffmpegCommand The fluent-ffmpeg constructor.
*/
constructor (ffmpeg) {
this.ffmpeg = ffmpeg;
CodecviewFilter.prototype.withMv = this.mv;
CodecviewFilter.prototype.withQp = this.qp;
CodecviewFilter.prototype.withMv_type = this.mv_type;
CodecviewFilter.prototype.withFrame_type = this.frame_type;
}
/**
*
* @param val
*/
mv(val) {
this._mv = val;
return this;
}
/**
* Display quantization parameters using the chroma planes.
*
*
* @param val
*/
qp(val) {
this._qp = val;
return this;
}
/**
*
* @param val
*/
mv_type(val) {
this._mv_type = val;
return this;
}
/**
*
* @param val
*/
frame_type(val) {
this._frame_type = val;
return this;
}
/**
* Creates this filter configuration and registers it in the ffmpeg instance.
* @return {ffmpegCommand} The ffmpeg instance.
*/
build() {
let opt = {};
if (this._mv) {
opt['mv'] = this._mv;
}
if (this._qp) {
opt['qp'] = this._qp;
}
if (this._mv_type) {
opt['mv_type'] = this._mv_type;
}
if (this._frame_type) {
opt['frame_type'] = this._frame_type;
}
addFilter(this.ffmpeg, {
filter: 'codecview',
options: opt
});
return this.ffmpeg;
}
}
module.exports.codecview = codecview;