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| <h1 class="page-title">Source: options/inputs.js</h1> |
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| <pre class="prettyprint source linenums"><code>/*jshint node:true*/ |
| 'use strict'; |
|
|
| var utils = require('../utils'); |
|
|
| /* |
| *! Input-related methods |
| */ |
|
|
| module.exports = function(proto) { |
| /** |
| * Add an input to command |
| * |
| * Also switches "current input", that is the input that will be affected |
| * by subsequent input-related methods. |
| * |
| * Note: only one stream input is supported for now. |
| * |
| * @method FfmpegCommand#input |
| * @category Input |
| * @aliases mergeAdd,addInput |
| * |
| * @param {String|Readable} source input file path or readable stream |
| * @return FfmpegCommand |
| */ |
| proto.mergeAdd = |
| proto.addInput = |
| proto.input = function(source) { |
| var isFile = false; |
|
|
| if (typeof source !== 'string') { |
| if (!('readable' in source) || !(source.readable)) { |
| throw new Error('Invalid input'); |
| } |
|
|
| var hasInputStream = this._inputs.some(function(input) { |
| return typeof input.source !== 'string'; |
| }); |
|
|
| if (hasInputStream) { |
| throw new Error('Only one input stream is supported'); |
| } |
|
|
| source.pause(); |
| } else { |
| var protocol = source.match(/^([a-z]{2,}):/i); |
| isFile = !protocol || protocol[0] === 'file'; |
| } |
|
|
| this._inputs.push(this._currentInput = { |
| source: source, |
| isFile: isFile, |
| options: utils.args() |
| }); |
|
|
| return this; |
| }; |
|
|
|
|
| /** |
| * Specify input format for the last specified input |
| * |
| * @method FfmpegCommand#inputFormat |
| * @category Input |
| * @aliases withInputFormat,fromFormat |
| * |
| * @param {String} format input format |
| * @return FfmpegCommand |
| */ |
| proto.withInputFormat = |
| proto.inputFormat = |
| proto.fromFormat = function(format) { |
| if (!this._currentInput) { |
| throw new Error('No input specified'); |
| } |
|
|
| this._currentInput.options('-f', format); |
| return this; |
| }; |
|
|
|
|
| /** |
| * Specify input FPS for the last specified input |
| * (only valid for raw video formats) |
| * |
| * @method FfmpegCommand#inputFps |
| * @category Input |
| * @aliases withInputFps,withInputFPS,withFpsInput,withFPSInput,inputFPS,inputFps,fpsInput |
| * |
| * @param {Number} fps input FPS |
| * @return FfmpegCommand |
| */ |
| proto.withInputFps = |
| proto.withInputFPS = |
| proto.withFpsInput = |
| proto.withFPSInput = |
| proto.inputFPS = |
| proto.inputFps = |
| proto.fpsInput = |
| proto.FPSInput = function(fps) { |
| if (!this._currentInput) { |
| throw new Error('No input specified'); |
| } |
|
|
| this._currentInput.options('-r', fps); |
| return this; |
| }; |
|
|
|
|
| /** |
| * Use native framerate for the last specified input |
| * |
| * @method FfmpegCommand#native |
| * @category Input |
| * @aliases nativeFramerate,withNativeFramerate |
| * |
| * @return FfmmegCommand |
| */ |
| proto.nativeFramerate = |
| proto.withNativeFramerate = |
| proto.native = function() { |
| if (!this._currentInput) { |
| throw new Error('No input specified'); |
| } |
|
|
| this._currentInput.options('-re'); |
| return this; |
| }; |
|
|
|
|
| /** |
| * Specify input seek time for the last specified input |
| * |
| * @method FfmpegCommand#seekInput |
| * @category Input |
| * @aliases setStartTime,seekTo |
| * |
| * @param {String|Number} seek seek time in seconds or as a '[hh:[mm:]]ss[.xxx]' string |
| * @return FfmpegCommand |
| */ |
| proto.setStartTime = |
| proto.seekInput = function(seek) { |
| if (!this._currentInput) { |
| throw new Error('No input specified'); |
| } |
|
|
| this._currentInput.options('-ss', seek); |
|
|
| return this; |
| }; |
|
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|
|
| /** |
| * Loop over the last specified input |
| * |
| * @method FfmpegCommand#loop |
| * @category Input |
| * |
| * @param {String|Number} [duration] loop duration in seconds or as a '[[hh:]mm:]ss[.xxx]' string |
| * @return FfmpegCommand |
| */ |
| proto.loop = function(duration) { |
| if (!this._currentInput) { |
| throw new Error('No input specified'); |
| } |
|
|
| this._currentInput.options('-loop', '1'); |
|
|
| if (typeof duration !== 'undefined') { |
| this.duration(duration); |
| } |
|
|
| return this; |
| }; |
| }; |
| </code></pre> |
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