嘿 有计划改成录音成mp3吗? wav格式太大了

[badboy-tian]

No description provided.

[badboy-tian]

首先, 谢谢你的这个库, 然后我改好了, 按照 https://www.jianshu.com/p/065bfe6d3ec2 这个教程编译lame
然后只需要改一个类就OK了

/**
 * 语音文件帮助类 用户保存相关文件
 */

public class AudioFileHelper {

    public static final String TAG = "AudioFileHelper";
    private AudioFileListener listener;
    private String savePath;
    private RandomAccessFile randomAccessFile;
    private File targetFile;
    private IdealRecorder.RecordConfig config;

    public AudioFileHelper(AudioFileListener listener) {
        this.listener = listener;
    }

    public void setSavePath(String savePath) {
        this.savePath = savePath;
    }

    public void setRecorderConfig(IdealRecorder.RecordConfig config) {
        this.config = config;
    }


    public void start() {
        try {
            open(savePath);
        } catch (IOException e) {
            e.printStackTrace();
            if (listener != null) {
                listener.onFailure(e.toString());
            }
        }
    }

    public void save(short[] data, int offset, int size) {
        if (randomAccessFile == null) {
            return;
        }
        try {
            write(randomAccessFile, data, offset, size);
        } catch (IOException e) {
            e.printStackTrace();
            if (listener != null) {
                listener.onFailure(e.toString());
            }

        }
    }

    public void finish() {
        try {
            close();
        } catch (IOException e) {
            e.printStackTrace();
            if (listener != null) {
                listener.onFailure(e.toString());
            }

        }
    }

    private byte[] mp3Buffer;

    private void open(String path) throws IOException {
        if (TextUtils.isEmpty(path)) {
            Log.d(TAG, "Path not set , data will not save");
            return;
        }
        if (this.config == null) {
            Log.d(TAG, "RecordConfig not set , data will not save");
            return;
        }
        targetFile = new File(path);

        if (targetFile.exists()) {
            targetFile.delete();
        } else {
            File parentDir = targetFile.getParentFile();
            if (!parentDir.exists()) {
                parentDir.mkdirs();
            }
        }
        short bSamples;
        short nChannels;
        int sRate;
        if (config.getAudioFormat() == AudioFormat.ENCODING_PCM_16BIT) {
            bSamples = 16;
        } else {
            bSamples = 8;
        }

        if (config.getChannelConfig() == AudioFormat.CHANNEL_IN_MONO) {
            nChannels = 1;
        } else {
            nChannels = 2;
        }
        sRate = config.getSampleRate();
        randomAccessFile = new RandomAccessFile(targetFile, "rw");
        randomAccessFile.setLength(0);
        Log.d(TAG, "mp3 path: " + path);
        SimpleLame.init(sRate, nChannels, sRate, bSamples);
        long bufSize = AudioRecord.getMinBufferSize(sRate, config.getChannelConfig(), config.getAudioFormat());
        mp3Buffer = new byte[(int) (7200 + (bufSize * 2 * 1.25))];
    }

    private void write(RandomAccessFile file, short[] data, int offset, int size) throws IOException {
        int encodedSize = SimpleLame.encode(data, data, size, mp3Buffer);
        file.write(mp3Buffer, offset, encodedSize);
    }

    private void close() throws IOException {
        try {
            if (randomAccessFile == null) {
                if (listener != null) {
                    listener.onFailure("File mp3 error exception occurs");
                }
                return;
            }
            final int flushResult = SimpleLame.flush(mp3Buffer);
            randomAccessFile.write(mp3Buffer, 0, flushResult);
            Log.d(TAG, "mp3 size: " + randomAccessFile.length());
            if (listener != null) {
                listener.onSuccess(savePath);
            }

        } finally {
            if (randomAccessFile != null) {
                randomAccessFile.close();
                randomAccessFile = null;
                SimpleLame.close();
            }
        }
    }

    public void cancel() {
        if (randomAccessFile == null) {
            return;
        }
        if (targetFile == null) {
            return;
        }
        if (targetFile.exists()) {
            targetFile.delete();
        }
        randomAccessFile = null;
        targetFile = null;
    }
}

[ideastudios]

你为何如此优秀