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FFmpegVideoRecord.java
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FFmpegVideoRecord.java
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package com.example.ffmpegvideorecord;
import android.app.Activity;
import android.content.Context;
import android.hardware.Camera;
import android.media.AudioFormat;
import android.media.AudioRecord;
import android.media.MediaRecorder;
import android.view.View;
import android.widget.FrameLayout;
import org.bytedeco.javacpp.avcodec;
import org.bytedeco.javacv.FFmpegFrameRecorder;
import org.bytedeco.javacv.Frame;
import java.io.File;
import java.nio.ByteBuffer;
import java.nio.ShortBuffer;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Stack;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.LinkedBlockingQueue;
import static java.lang.Thread.State.WAITING;
public class FFmpegVideoRecord {
private int mCameraId;
private FFmpegFrameRecorder mFrameRecorder;
private VideoRecordThread mVideoRecordThread;
private AudioRecordRunnable audioRecordRunnable;
private volatile boolean mRecording = false;
private LinkedBlockingQueue<FrameToRecord> mFrameToRecordQueue;
private LinkedBlockingQueue<FrameToRecord> mRecycledFrameQueue;
private int mFrameToRecordCount;
private long mTotalProcessFrameTime;
private Stack<RecordFragment> mRecordFragments;
private int sampleAudioRateInHz = 44100;
private int previewWidth;
private int previewHeight;
private int videoWidth;
private int videoHeight;
private int frameRate = 24;
private int frameDepth = Frame.DEPTH_UBYTE;
private int frameChannels = 2;
private Context mContext;
private View mView;
private FrameLayout mRecordBtn;
private SimpleDateFormat mDateFormat = new SimpleDateFormat("yyyy-MM-dd HH-mm-ss");
private String mInitFilePath;
private String mInitDirPath;
public FFmpegVideoRecord(int previewWidth, int previewHeight, Activity activity, View view) {
mContext = activity.getBaseContext();
this.previewWidth = previewWidth;
this.previewHeight = previewHeight;
videoWidth = 1280;
videoHeight = 720;
mCameraId = Camera.CameraInfo.CAMERA_FACING_BACK;
// At most buffer 10 Frame
mFrameToRecordQueue = new LinkedBlockingQueue<>(10);
// At most recycle 2 Frame
mRecycledFrameQueue = new LinkedBlockingQueue<>(2);
mRecordFragments = new Stack<>();
mView = view;
mRecordBtn = (FrameLayout) mView.findViewById(R.id.button_video);
mRecordBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
startStopRecord();
}
});
}
public void startStopRecord() {
if (mRecording) {
stopRecording();
} else {
File sdcardFile = UtilMethods.getSdCardPaths(true, mContext).get(0);
mInitDirPath = sdcardFile.getAbsolutePath();
initRecorder();
startRecorder();
initAudioRecorder();
startRecording();
resumeRecording();
}
}
public void record(byte[] data) {
if (mRecording) {
if (audioRecordRunnable == null || !audioRecordRunnable.isRunning()) {
// wait for AudioRecord to init and start
mRecordFragments.peek().setStartTimestamp(System.currentTimeMillis());
} else {
// pop the current record fragment when calculate total recorded time
RecordFragment curFragment = mRecordFragments.pop();
long recordedTime = calculateTotalRecordedTime(mRecordFragments);
// push it back after calculation
mRecordFragments.push(curFragment);
long curRecordedTime = System.currentTimeMillis()
- curFragment.getStartTimestamp() + recordedTime;
long timestamp = 1000 * curRecordedTime;
Frame frame;
FrameToRecord frameToRecord = mRecycledFrameQueue.poll();
if (frameToRecord != null) {
frame = frameToRecord.getFrame();
frameToRecord.setTimestamp(timestamp);
} else {
frame = new Frame(previewWidth, previewHeight, frameDepth, frameChannels);
frameToRecord = new FrameToRecord(timestamp, frame);
}
((ByteBuffer) frame.image[0].position(0)).put(data);
if (mFrameToRecordQueue.offer(frameToRecord)) {
mFrameToRecordCount++;
}
}
}
}
public String mDefaultRecordFolder = "_CameraRecord";
private void initRecorder() {
File folder = new File(mInitDirPath + File.separator + mDefaultRecordFolder);
if (!folder.exists()) {
folder.mkdirs();
}
mInitFilePath = mInitDirPath + File.separator + mDefaultRecordFolder
+ File.separator +" Camrecord " + mDateFormat.format(new Date());
File videoFilePath = new File(mInitFilePath);
mFrameRecorder = new FFmpegFrameRecorder(videoFilePath, videoWidth, videoHeight, 2);
mFrameRecorder.setFormat("mp4");
mFrameRecorder.setSampleRate(sampleAudioRateInHz);
mFrameRecorder.setFrameRate(frameRate);
mFrameRecorder.setVideoCodec(avcodec.AV_CODEC_ID_H264);
mFrameRecorder.setVideoOption("crf", "28");
mFrameRecorder.setVideoOption("preset", "superfast");
mFrameRecorder.setVideoOption("tune", "zerolatency");
}
private void releaseRecorder() {
if (mFrameRecorder != null) {
try {
mFrameRecorder.release();
} catch (FFmpegFrameRecorder.Exception e) {
e.printStackTrace();
}
mFrameRecorder = null;
}
}
private void startRecorder() {
try {
mFrameRecorder.start();
} catch (FFmpegFrameRecorder.Exception e) {
e.printStackTrace();
}
}
private void stopRecorder() {
if (mFrameRecorder != null) {
try {
mFrameRecorder.stop();
} catch (FFmpegFrameRecorder.Exception e) {
e.printStackTrace();
}
}
mRecordFragments.clear();
}
private void initAudioRecorder() {
audioRecordRunnable = new AudioRecordRunnable();
}
private void releaseAudioRecorder() {
if (audioRecordRunnable != null) {
audioRecordRunnable.release();
audioRecordRunnable = null;
}
}
private void startRecording() {
mVideoRecordThread = new VideoRecordThread();
mVideoRecordThread.start();
}
public void stopRecording() {
if (!mRecording) {
return;
}
mRecordFragments.peek().setEndTimestamp(System.currentTimeMillis());
mRecording = false;
audioRecordRunnable.stop();
if (mVideoRecordThread != null && mVideoRecordThread.isRunning()) {
mVideoRecordThread.stopRunning();
try {
mVideoRecordThread.join();
} catch (InterruptedException e) {
e.printStackTrace();
}
mVideoRecordThread = null;
}
mFrameToRecordQueue.clear();
mRecycledFrameQueue.clear();
stopRecorder();
releaseRecorder();
releaseAudioRecorder();
}
private void resumeRecording() {
if (!mRecording) {
RecordFragment recordFragment = new RecordFragment();
recordFragment.setStartTimestamp(System.currentTimeMillis());
mRecordFragments.push(recordFragment);
mRecording = true;
new Thread(audioRecordRunnable).start();
}
}
private long calculateTotalRecordedTime(Stack<RecordFragment> recordFragments) {
long recordedTime = 0;
for (RecordFragment recordFragment : recordFragments) {
recordedTime += recordFragment.getDuration();
}
return recordedTime;
}
class AudioRecordRunnable implements Runnable {
private boolean isRunning;
private AudioRecord mAudioRecord;
private ShortBuffer audioData;
private CountDownLatch latch;
public AudioRecordRunnable() {
int bufferSize = AudioRecord.getMinBufferSize(sampleAudioRateInHz,
AudioFormat.CHANNEL_IN_MONO, AudioFormat.ENCODING_PCM_16BIT);
mAudioRecord = new AudioRecord(MediaRecorder.AudioSource.MIC, sampleAudioRateInHz,
AudioFormat.CHANNEL_IN_MONO, AudioFormat.ENCODING_PCM_16BIT, bufferSize);
audioData = ShortBuffer.allocate(bufferSize);
}
@Override
public void run() {
latch = new CountDownLatch(1);
android.os.Process.setThreadPriority(android.os.Process.THREAD_PRIORITY_URGENT_AUDIO);
mAudioRecord.startRecording();
isRunning = true;
while (isRunning) {
if (mRecording && mFrameRecorder != null) {
int bufferReadResult = mAudioRecord.read(audioData.array(), 0, audioData.capacity());
audioData.limit(bufferReadResult);
if (bufferReadResult > 0) {
try {
mFrameRecorder.recordSamples(audioData);
} catch (FFmpegFrameRecorder.Exception | NullPointerException e) {
e.printStackTrace();
}
}
}
}
mAudioRecord.stop();
latch.countDown();
}
public boolean isRunning() {
return isRunning;
}
public void stop() {
this.isRunning = false;
}
public void release() {
if (latch == null) {
return;
}
try {
latch.await();
} catch (InterruptedException e) {
e.printStackTrace();
}
if (mAudioRecord != null) {
mAudioRecord.release();
mAudioRecord = null;
}
}
}
class VideoRecordThread extends Thread {
private boolean isRunning;
@Override
public void run() {
isRunning = true;
FrameToRecord recordedFrame = null;
while (isRunning || !mFrameToRecordQueue.isEmpty()) {
try {
recordedFrame = mFrameToRecordQueue.take();
} catch (InterruptedException ie) {
break;
}
if (mFrameRecorder != null && recordedFrame != null) {
long timestamp = recordedFrame.getTimestamp();
if (timestamp > mFrameRecorder.getTimestamp()) {
mFrameRecorder.setTimestamp(timestamp);
}
long startTime = System.currentTimeMillis();
try {
Frame frame = recordedFrame.getFrame();
mFrameRecorder.record(frame);
} catch (FFmpegFrameRecorder.Exception e) {
e.printStackTrace();
}
long endTime = System.currentTimeMillis();
long processTime = endTime - startTime;
mTotalProcessFrameTime += processTime;
mRecycledFrameQueue.offer(recordedFrame);
}
}
}
public void stopRunning() {
this.isRunning = false;
if (getState() == WAITING) {
interrupt();
}
}
public boolean isRunning() {
return isRunning;
}
}
private class FrameToRecord {
private long timestamp;
private Frame frame;
public FrameToRecord(long timestamp, Frame frame) {
this.timestamp = timestamp;
this.frame = frame;
}
public long getTimestamp() {
return timestamp;
}
public void setTimestamp(long timestamp) {
this.timestamp = timestamp;
}
public Frame getFrame() {
return frame;
}
public void setFrame(Frame frame) {
this.frame = frame;
}
}
private class RecordFragment {
private long startTimestamp;
private long endTimestamp;
public void setStartTimestamp(long startTimestamp) {
this.startTimestamp = startTimestamp;
}
public long getStartTimestamp() {
return startTimestamp;
}
public void setEndTimestamp(long endTimestamp) {
this.endTimestamp = endTimestamp;
}
public long getEndTimestamp() {
return endTimestamp;
}
public long getDuration() {
return endTimestamp - startTimestamp;
}
}
}