是的,Android的AudioEffect類允許您自定義音頻效果。AudioEffect是Android提供的一組用于處理音頻數據的類,包括音頻過濾器、混響、均衡器等。您可以通過創建AudioEffect實例并設置其參數來實現自定義音頻效果。
以下是一個簡單的示例,展示了如何使用AudioEffect類創建一個自定義音頻過濾器:
import android.media.AudioEffect;
import android.media.AudioFormat;
import android.media.AudioManager;
import android.media.MediaCodec;
import android.media.MediaCodecInfo;
import android.media.MediaCodecList;
import android.media.MediaFormat;
import android.os.Build;
public class CustomAudioFilter {
private AudioEffect audioEffect;
public CustomAudioFilter(int effectType, int sampleRateInHz, int channelConfig, int audioFormat) {
int sampleRate = sampleRateInHz;
int channelCount = channelConfig == AudioFormat.CHANNEL_IN_MONO ? 1 : 2;
int bufferSizeInBytes = AudioEffect.getMinBufferSize(sampleRate, channelCount, audioFormat);
if (bufferSizeInBytes == AudioEffect.ERROR_BAD_VALUE || bufferSizeInBytes == AudioEffect.ERROR) {
throw new RuntimeException("Invalid sample rate or channel config");
}
AudioManager audioManager = (AudioManager) getSystemService(AUDIO_SERVICE);
audioManager.setMode(AudioManager.MODE_IN_CALL);
audioManager.setSpeakerphoneOn(false);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
audioEffect = new AudioEffect(effectType, sampleRate, channelCount, bufferSizeInBytes, 0);
} else {
audioEffect = new AudioEffect(effectType, sampleRate, channelCount, bufferSizeInBytes);
}
if (audioEffect.initCheck() != AudioEffect.SUCCESS) {
throw new RuntimeException("Failed to initialize AudioEffect");
}
}
public void applyFilter(byte[] inputBuffer, byte[] outputBuffer) {
short[] inputShorts = new short[inputBuffer.length / 2];
short[] outputShorts = new short[outputBuffer.length / 2];
ByteBuffer inputByteBuffer = ByteBuffer.wrap(inputBuffer);
ByteBuffer outputByteBuffer = ByteBuffer.wrap(outputBuffer);
inputByteBuffer.asShortBuffer().get(inputShorts);
audioEffect.setAudioStatus(new AudioEffect.AudioSessionInfo());
audioEffect.applyAudioEffect(inputShorts, outputShorts);
outputByteBuffer.asShortBuffer().put(outputShorts);
}
}
在這個示例中,我們創建了一個名為CustomAudioFilter的類,它接受一個音頻效果類型、采樣率、通道配置和音頻格式作為參數。然后,我們使用這些參數初始化一個AudioEffect實例。最后,我們提供了一個applyFilter方法,該方法接受輸入和輸出緩沖區,并將音頻數據傳遞給AudioEffect實例進行處理。
請注意,這個示例僅適用于Android 4.2(API級別17)及更高版本。如果您需要支持更早的Android版本,您可能需要使用不同的方法來實現自定義音頻效果。