mirror of
https://github.com/shaka-project/shaka-player.git
synced 2026-06-25 17:45:03 +03:00
Muhammad Haris
1c00b4c1fb
This replaces mux.js for CEA608 decoding. Applications will no longer need to include mux.js for CEA support, and mux.js will only be necessary for TS transmuxing. Closes #2648
49 lines
1.3 KiB
JavaScript
49 lines
1.3 KiB
JavaScript
/*! @license
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* Shaka Player
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* Copyright 2016 Google LLC
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* SPDX-License-Identifier: Apache-2.0
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*/
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goog.provide('shaka.cea.ICaptionDecoder');
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/**
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* Interface for decoding inband closed captions from packets.
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* @interface
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*/
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shaka.cea.ICaptionDecoder = class {
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/**
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* Extracts packets and prepares them for decoding. In a given media fragment,
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* all the caption packets found in its SEI messages should be extracted by
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* successive calls to extract(), followed by a single call to decode().
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*
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* @param {!Uint8Array} userDataSeiMessage
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* This is a User Data registered by Rec.ITU-T T.35 SEI message.
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* It is described in sections D.1.6 and D.2.6 of Rec. ITU-T H.264 (06/2019).
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* @param {!number} pts PTS when this packet was received, in seconds.
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*/
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extract(userDataSeiMessage, pts) {}
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/**
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* Decodes all currently extracted packets and then clears them.
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* This should be called once for a set of extracts (see comment on extract).
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* @return {!Array.<!shaka.cea.ICaptionDecoder.ClosedCaption>}
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*/
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decode() {}
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/**
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* Clears the decoder state completely.
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* Should be used when an action renders the decoder state invalid,
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* e.g. unbuffered seeks.
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*/
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clear() {}
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};
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/**
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* Parsed Cue.
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* @typedef {{
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* cue: !shaka.text.Cue,
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* stream: !string
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* }}
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*/
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shaka.cea.ICaptionDecoder.ClosedCaption;
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