@tmigone/pulseaudio
Version:
A TypeScript based client library for PulseAudio.
42 lines • 1.5 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
const common_1 = require("./common");
const PA_CHANNEL_MAP_BASE_SIZE = 2;
class PAChannelMap extends common_1.PATag {
constructor() {
super(...arguments);
this.type = common_1.PATagType.PA_TAG_CHANNEL_MAP;
}
toTagBuffer(value) {
const buffer = Buffer.allocUnsafe(PA_CHANNEL_MAP_BASE_SIZE + value.channels);
let offset = 0;
offset = buffer.writeUInt8(common_1.PATagType.PA_TAG_CHANNEL_MAP.toString().charCodeAt(0), offset);
offset = buffer.writeUInt8(value.channels, offset);
value.types.map(type => offset = buffer.writeUInt8(type, offset));
return buffer;
}
fromTagBuffer(buffer) {
return this.parseTag(buffer);
}
sanitizeBuffer(buffer) {
const value = this.parseTag(buffer);
return buffer.subarray(0, PA_CHANNEL_MAP_BASE_SIZE + value.channels);
}
parseTag(buffer) {
const channels = buffer.readUInt8(1);
const types = [];
for (let index = 0; index < channels; index++) {
types.push(buffer.readUInt8(2 + index));
}
return { channels, types };
}
isValidBuffer(buffer) {
const tagType = buffer.readUInt8(0);
return tagType === common_1.PATagType.PA_TAG_CHANNEL_MAP.toString().charCodeAt(0);
}
isTagBuffer(buffer) {
return true;
}
}
exports.default = PAChannelMap;
//# sourceMappingURL=channelMap.js.map