tav-media/lib/src/engine/tav-audio-reader.js

Cross platform media editing framework

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    });
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import { tav } from '../tav';
import { allowCallNativeAnytime } from '../types/tav-object';
import { Dispatcher } from '../utils/dispatcher';
/**
 * A audio reader used to obtain the audio frames of a media.
 * @category Engine
 */
export class TAVAudioReader {
    constructor(ref) {
        this.ref = ref;
    }
    /**
     * Make a audio reader from a media clip.
     */
    static MakeFrom(root, sampleRate, sampleCount, channels, isRecycle) {
        return __awaiter(this, void 0, void 0, function* () {
            const rootNative = yield root.build();
            if (!rootNative)
                return null;
            const native = yield tav.webAssemblyQueue.exec(tav.TAVAudioReader.MakeFrom, tav.TAVAudioReader, rootNative, sampleRate, sampleCount, channels, isRecycle);
            if (!native)
                return null;
            return new TAVAudioReader(native);
        });
    }
    /**
     * Sets the current frame to the specified time.
     * @param targetTime The target time to seek to.
     * @returns seeked or not.
     */
    seekTo(targetTime) {
        return __awaiter(this, void 0, void 0, function* () {
            return TAVAudioReader.dispatcher.queue(() => __awaiter(this, void 0, void 0, function* () {
                var _a, _b;
                if (tav.webAssemblyQueue) {
                    const result = yield tav.webAssemblyQueue.exec((_a = this.ref) === null || _a === void 0 ? void 0 : _a.seekTo, this.ref, targetTime);
                    return result;
                }
                return yield ((_b = this.ref) === null || _b === void 0 ? void 0 : _b.seekTo(targetTime));
            }), 'seekTo');
        });
    }
    /**
     * Reads the next audio frame for the output.
     */
    readNextFrame() {
        return __awaiter(this, void 0, void 0, function* () {
            yield TAVAudioReader.dispatcher.queue(() => __awaiter(this, void 0, void 0, function* () {
                var _a, _b;
                if (tav.webAssemblyQueue) {
                    yield tav.webAssemblyQueue.exec((_a = this.ref) === null || _a === void 0 ? void 0 : _a.readNextFrame, this.ref);
                }
                else {
                    return yield ((_b = this.ref) === null || _b === void 0 ? void 0 : _b.readNextFrame());
                }
            }), 'readNextFrame');
        });
    }
    build() {
        return this.ref;
    }
    release() {
        var _a;
        return (_a = this.ref) === null || _a === void 0 ? void 0 : _a.delete();
    }
}
TAVAudioReader.dispatcher = new Dispatcher();
__decorate([
    allowCallNativeAnytime
], TAVAudioReader.prototype, "release", null);