mirror of
https://github.com/shaka-project/shaka-player.git
synced 2026-06-17 16:26:39 +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
57 lines
1.4 KiB
JavaScript
57 lines
1.4 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.ICeaParser');
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/**
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* Interface for parsing inband closed caption data from MP4 streams.
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* @interface
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*/
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shaka.cea.ICeaParser = class {
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/**
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* Initializes the parser with init segment data.
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* @param {!BufferSource} initSegment init segment to parse.
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*/
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init(initSegment) {}
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/**
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* Parses the stream and extracts closed captions packets.
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* @param {!BufferSource} mediaSegment media segment to parse.
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* @return {!Array<!shaka.cea.ICeaParser.CaptionPacket>}
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*/
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parse(mediaSegment) {}
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};
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/**
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* NALU type for Supplemental Enhancement Information (SEI).
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* @const {number}
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*/
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shaka.cea.ICeaParser.NALU_TYPE_SEI = 0x06;
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/**
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* Default timescale value for a track.
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*/
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shaka.cea.ICeaParser.DEFAULT_TIMESCALE_VALUE = 90000;
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/**
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* @typedef {{
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* packet: !Uint8Array,
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* pts: !number
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* }}
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*
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* @description Parsed Caption Packet.
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* @property {!Uint8Array} packet
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* Caption packet. More specifically, it contains a "User data
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* registered by Recommendation ITU-T T.35 SEI message", from section D.1.6
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* and section D.2.6 of Rec. ITU-T H.264 (06/2019).
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* @property {!number} pts
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* The presentation timestamp (pts) at which the ITU-T T.35 data shows up.
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* in seconds.
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* @exportDoc
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*/
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shaka.cea.ICeaParser.CaptionPacket;
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