rx-player
Version:
Canal+ HTML5 Video Player
58 lines (57 loc) • 2.51 kB
JavaScript
/**
* Copyright 2015 CANAL+ Group
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import { createBoxWithChildren } from "../../../parsers/containers/isobmff";
import { hexToBytes } from "../../../utils/string_parsing";
import { createAVC1Box, createAVCCBox, createENCVBox, createFRMABox, createSCHMBox, createSTSDBox, createTENCBox, createVMHDBox, } from "./create_boxes";
import createInitSegment from "./create_init_segment";
/**
* Return full video Init segment as Uint8Array
* @param {Number} timescale - lowest number, this one will be set into mdhd
* *10000 in mvhd, e.g. 1000
* @param {Number} width
* @param {Number} height
* @param {Number} hRes
* @param {Number} vRes
* @param {Number} nalLength (1, 2 or 4)
* @param {string} codecPrivateData
* @param {Uint8Array} [keyId]
* @returns {Uint8Array}
*/
export default function createVideoInitSegment(timescale, width, height, hRes, vRes, nalLength, codecPrivateData, keyId) {
const [, spsHex, ppsHex] = codecPrivateData.split("00000001");
if (spsHex === undefined || ppsHex === undefined) {
throw new Error("Smooth: unsupported codec private data.");
}
const sps = hexToBytes(spsHex);
const pps = hexToBytes(ppsHex);
// TODO NAL length is forced to 4
const avcc = createAVCCBox(sps, pps, nalLength);
let stsd;
if (keyId === undefined) {
const avc1 = createAVC1Box(width, height, hRes, vRes, "AVC Coding", 24, avcc);
stsd = createSTSDBox([avc1]);
}
else {
const tenc = createTENCBox(1, 8, keyId);
const schi = createBoxWithChildren("schi", [tenc]);
const schm = createSCHMBox("cenc", 65536);
const frma = createFRMABox("avc1");
const sinf = createBoxWithChildren("sinf", [frma, schm, schi]);
const encv = createENCVBox(width, height, hRes, vRes, "AVC Coding", 24, avcc, sinf);
stsd = createSTSDBox([encv]);
}
return createInitSegment(timescale, "video", stsd, createVMHDBox(), width, height);
}