Method exportAudio

packages/alphatab/src/synth/AlphaSynth.ts:722–759

* Creates a new audio exporter, initialized with the given data. * @param options The export options to use. * The track volume and transposition pitches must lists must be filled with midi channels. * @param midi The midi file to use. * @param syncPoints The sync points to use

(
        options: AudioExportOptions,
        midi: MidiFile,
        syncPoints: BackingTrackSyncPoint[],
        mainTranspositionPitches: Map<number, number>
    )

     * @param transpositionPitches The initial transposition pitches to apply.
     */
    public exportAudio(
        options: AudioExportOptions,
        midi: MidiFile,
        syncPoints: BackingTrackSyncPoint[],
        mainTranspositionPitches: Map<number, number>
    ): IAlphaSynthAudioExporter {
        const exporter = new AlphaSynthAudioExporter(options);

        exporter.loadMidiFile(midi);
        if (options.useSyncPoints) {
            exporter.updateSyncPoints(syncPoints);
        }
        exporter.applyTranspositionPitches(mainTranspositionPitches);

        for (const [channel, semitones] of options.trackTranspositionPitches) {
            exporter.setChannelTranspositionPitch(channel, semitones);
        }

        for (const [channel, volume] of options.trackVolume) {
            exporter.channelSetMixVolume(channel, volume);
        }

        if (options.soundFonts) {
            for (const f of options.soundFonts!) {
                exporter.loadSoundFont(f);
            }
        } else {
            exporter.loadPresets((this.synthesizer as TinySoundFont).presets);
        }

        if (options.playbackRange) {
            exporter.limitExport(options.playbackRange);
        }

        exporter.setup();

        return exporter;
    }
}

/**