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coreimagesrc.js
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coreimagesrc.js
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const addFilter = require('./utils').addFilter;
const registerFilter = require('./utils').registerFilter;
/**
* Augment FfmpegCommand with the coreimagesrc function.
*
*
* @example
* ffmpeg().coreimagesrc()
* ... // 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 coreimagesrc function.
*/
function coreimagesrc(ffmpegCommand) {
registerFilter(ffmpegCommand, 'coreimagesrc', function() {
return new CoreimagesrcFilter(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 CoreimagesrcFilter {
/**
* @param {FfmpegCommand} ffmpegCommand The fluent-ffmpeg constructor.
*/
constructor (ffmpeg) {
this.ffmpeg = ffmpeg;
CoreimagesrcFilter.prototype.withList_generators = this.list_generators;
CoreimagesrcFilter.prototype.withSize = this.size;
CoreimagesrcFilter.prototype.withRate = this.rate;
CoreimagesrcFilter.prototype.withSar = this.sar;
CoreimagesrcFilter.prototype.withDuration = this.duration;
}
/**
* List all available generators along with all their respective options as well as
* possible minimum and maximum values along with the default values.
*
* list_generators=true
*
*
*
* @param val
*/
list_generators(val) {
this._list_generators = val;
return this;
}
/**
* Specify the size of the sourced video. For the syntax of this option, check the
* (ffmpeg-utils)"Video size" section in the ffmpeg-utils manual.
* The default value is 320x240.
*
*
* @param val
*/
size(val) {
this._size = val;
return this;
}
/**
* Specify the frame rate of the sourced video, as the number of frames
* generated per second. It has to be a string in the format
* frame_rate_num/frame_rate_den, an integer number, a floating point
* number or a valid video frame rate abbreviation. The default value is
* "25".
*
*
* @param val
*/
rate(val) {
this._rate = val;
return this;
}
/**
* Set the sample aspect ratio of the sourced video.
*
*
* @param val
*/
sar(val) {
this._sar = val;
return this;
}
/**
* Set the duration of the sourced video. See
* (ffmpeg-utils)the Time duration section in the ffmpeg-utils(1) manual
* for the accepted syntax.
*
* If not specified, or the expressed duration is negative, the video is
* supposed to be generated forever.
*
* @param val
*/
duration(val) {
this._duration = val;
return this;
}
/**
* Creates this filter configuration and registers it in the ffmpeg instance.
* @return {ffmpegCommand} The ffmpeg instance.
*/
build() {
let opt = {};
if (this._list_generators) {
opt['list_generators'] = this._list_generators;
}
if (this._size) {
opt['size'] = this._size;
}
if (this._rate) {
opt['rate'] = this._rate;
}
if (this._sar) {
opt['sar'] = this._sar;
}
if (this._duration) {
opt['duration'] = this._duration;
}
addFilter(this.ffmpeg, {
filter: 'coreimagesrc',
options: opt
});
return this.ffmpeg;
}
}
module.exports.coreimagesrc = coreimagesrc;