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66 lines
2.3 KiB
66 lines
2.3 KiB
package com.frank.ffmpeg;
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import android.media.AudioFormat;
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import android.media.AudioManager;
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import android.media.AudioTrack;
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/**
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* AudioPlayer: use AudioTrack and OpenSL ES to play audio
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* Created by frank on 2018/2/1.
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*/
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public class AudioPlayer {
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static {
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System.loadLibrary("media-handle");
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}
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//using AudioTrack to play
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public native void play(String audioPath);
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//using OpenSL ES to play
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public native void playAudio(String audioPath);
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public native void stop();
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public native static void lameInitDefault();
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public native static void lameInit(int inSamplerate, int outChannel,
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int outSamplerate, int outBitrate, float scaleInput, int mode, int vbrMode,
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int quality, int vbrQuality, int abrMeanBitrate, int lowpassFreq, int highpassFreq, String id3tagTitle,
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String id3tagArtist, String id3tagAlbum, String id3tagYear,
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String id3tagComment);
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public native static int lameEncode(short[] buffer_l, short[] buffer_r,
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int samples, byte[] mp3buf);
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public native static int encodeBufferInterleaved(short[] pcm, int samples,
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byte[] mp3buf);
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public native static int lameFlush(byte[] mp3buf);
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public native static void lameClose();
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/**
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* Create an AudioTrack instance for JNI call
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*
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* @param sampleRate sampleRate
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* @param channels channel layout
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* @return AudioTrack
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*/
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public AudioTrack createAudioTrack(int sampleRate, int channels) {
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int audioFormat = AudioFormat.ENCODING_PCM_16BIT;
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int channelConfig;
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if (channels == 1) {
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channelConfig = AudioFormat.CHANNEL_OUT_MONO;
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} else if (channels == 2) {
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channelConfig = AudioFormat.CHANNEL_OUT_STEREO;
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} else {
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channelConfig = AudioFormat.CHANNEL_OUT_STEREO;
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}
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int bufferSizeInBytes = AudioTrack.getMinBufferSize(sampleRate, channelConfig, audioFormat);
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return new AudioTrack(AudioManager.STREAM_MUSIC, sampleRate, channelConfig, audioFormat,
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bufferSizeInBytes, AudioTrack.MODE_STREAM);
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}
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}
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