您好我参考https://github.com/google/grafika的代码提出了这个问题。
我正在尝试在方向更改期间重新初始化我的编码器，以便调整编码帧的宽高比。
更新：
这是我的GLSurfaceView.Renderer类
class CameraSurfaceRenderer implements GLSurfaceView.Renderer {
private static final String TAG = MainActivity.TAG;
private static final boolean VERBOSE = false;
private static final boolean ROSE_COLORED_GLASSES = false; // experiment
private MainActivity.CameraHandler mCameraHandler;
private TextureMovieEncoder mVideoEncoder;
private File mOutputFile;
TextView tv;
private TextureRender mTextureRender;
private SurfaceTexture mSurfaceTexture;
private boolean mRecordingEnabled;
Context cntex;
public CameraSurfaceRenderer(MainActivity.CameraHandler cameraHandler, TextureMovieEncoder movieEncoder, File outputFile, TextView tx, Context c) {
mOutputFile = outputFile;
mVideoEncoder = movieEncoder;
mRecordingEnabled = false;
mCameraHandler = cameraHandler;
tv = tx;
cntex = c;
}
public void notifyPausing() {
if (mSurfaceTexture != null) {
Log.d(TAG, "renderer pausing -- releasing SurfaceTexture");
mSurfaceTexture.release();
mSurfaceTexture = null;
}
}
public void changeRecordingState(boolean isRecording) {
Log.d(TAG, "changeRecordingState: was " + mRecordingEnabled + " now " + isRecording);
mRecordingEnabled = isRecording;
}
@Override
public void onSurfaceCreated(GL10 unused, EGLConfig config) {
System.out.println("onSurfaceCreated start");
Log.d(TAG, "onSurfaceCreated");
mTextureRender = new TextureRender(cntex);
mTextureRender.surfaceCreated();
if (ROSE_COLORED_GLASSES) {
String rosyFragment =
"#extension GL_OES_EGL_image_external : require\n" +
"precision mediump float;\n" +
"varying vec2 vTextureCoord;\n" +
"uniform samplerExternalOES sTexture;\n" +
"void main() {\n" +
" vec4 tc = texture2D(sTexture, vTextureCoord);\n" +
" gl_FragColor.r = tc.r * 0.3 + tc.g * 0.59 + tc.b * 0.11;\n" +
"}\n";
// assign value to gl_FragColor.g and .b as well to get simple B&W
mTextureRender.changeFragmentShader(rosyFragment);
}
mSurfaceTexture = new SurfaceTexture(mTextureRender.getTextureId());
// Tell the UI thread to enable the camera preview.
mCameraHandler.sendMessage(mCameraHandler.obtainMessage(
MainActivity.CameraHandler.MSG_SET_SURFACE_TEXTURE, mSurfaceTexture));
if (cntex.getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT) {
mVideoEncoder.startRecording(new TextureMovieEncoder.EncoderConfig(
mOutputFile, 480, 640, 1400000, EGL14.eglGetCurrentContext()));
} else {
mVideoEncoder.startRecording(new TextureMovieEncoder.EncoderConfig(
mOutputFile, 640, 480, 1400000, EGL14.eglGetCurrentContext()));
}
mVideoEncoder.updateSharedContext(EGL14.eglGetCurrentContext());
System.out.println("onSurfaceCreated end");
}
boolean is_stpd = false;
int count = 0;
@Override
public void onSurfaceChanged(GL10 unused, int width, int height) {
System.out.println("onSurfaceChanged start");
Log.d(TAG, "onSurfaceChanged " + width + "x" + height);
GLES20.glViewport(0, 0, width, height);
mCameraHandler.sendEmptyMessage(2); // to display toast message of surface change.
int orientation = cntex.getResources().getConfiguration().orientation;
// System.out.println("onSurfaceChanged before reinit");
mVideoEncoder.encoder_reinitialisation(EGL14.eglGetCurrentContext(), orientation);
// System.out.println("onSurfaceChanged after reinit");
System.out.println("onSurfaceChanged end");
}
int _frm_cnt = 0;
double _strt_tm = 0;
@Override
public void onDrawFrame(GL10 unused) {
System.out.println("onDrawFrame start");
if (VERBOSE) Log.d(TAG, "onDrawFrame tex=" + mTextureRender.getTextureId());
++_frm_cnt;
if(_frm_cnt == 1) {
_strt_tm = System.currentTimeMillis();
}
if((System.currentTimeMillis() - _strt_tm) >= 1000) {
System.out.println("fps = " + _frm_cnt );
//tx.setText("fps = " + Integer.toString(frm_cnt));
_frm_cnt = 0;
}
mSurfaceTexture.updateTexImage();
//
mVideoEncoder.setTextureId(mTextureRender.getTextureId());
//
if(mVideoEncoder.is_prepared == true) {
// // This will be ignored if we're not actually recording.
mVideoEncoder.frameAvailable(mSurfaceTexture);
}
// Draw the video frame.
mTextureRender.drawFrame(mSurfaceTexture);
System.out.println("onDrawFrame end");
}
}
这是我的TextureMovieEncoder类
public class TextureMovieEncoder implements Runnable {
private static final String TAG = MainActivity.TAG;
private static final boolean VERBOSE = false;
private static final String MIME_TYPE = "video/avc"; // H.264 Advanced Video Coding
private static final int FRAME_RATE = 5; // 30fps
private static final int IFRAME_INTERVAL = 1; // 5 seconds between I-frames
private static final int MSG_START_RECORDING = 0;
private static final int MSG_STOP_RECORDING = 1;
private static final int MSG_FRAME_AVAILABLE = 2;
private static final int MSG_SET_TEXTURE_ID = 3;
private static final int MSG_UPDATE_SHARED_CONTEXT = 4;
private static final int MSG_QUIT = 5;
private static final int MSG_REINIT = 6;
// ----- accessed by encoder thread -----
private EglCore mEglBase;
private WindowSurface mInputWindowSurface;
private MediaMuxer mMuxer;
private MediaCodec mEncoder;
private MediaCodec.BufferInfo mBufferInfo;
private int mTrackIndex;
private boolean mMuxerStarted;
private TextureRender mTextureRender;
private int mTextureId;
private int mFrameNum;
File enc_file = new File(Environment.getExternalStorageDirectory().getPath() + "/encoded_preview.webm");
FileOutputStream fp_enc = null;
PrintWriter enc_len = null;
// ----- accessed by multiple threads -----
private volatile EncoderHandler mHandler;
private Object mReadyFence = new Object(); // guards ready/running
private boolean mReady;
public boolean mRunning;
public boolean is_prepared = false;
public TextureMovieEncoder(Context cntxt) {
context = cntxt;
}
public static class EncoderConfig {
final File mOutputFile;
final int mWidth;
final int mHeight;
final int mBitRate;
final EGLContext mEglContext;
public EncoderConfig(File outputFile, int width, int height, int bitRate,
EGLContext sharedEglContext) {
System.out.println("EncoderConfig start");
mOutputFile = outputFile;
mWidth = width;
mHeight = height;
mBitRate = bitRate;
mEglContext = sharedEglContext;
System.out.println("EncoderConfig end");
}
@Override
public String toString() {
return "EncoderConfig: " + mWidth + "x" + mHeight + " @" + mBitRate +
" to '" + mOutputFile.toString() + "' ctxt=" + mEglContext;
}
}
public void startRecording(EncoderConfig config) {
System.out.println("startRecording start");
Log.d(TAG, "Encoder: startRecording()");
synchronized (mReadyFence) {
if (mRunning) {
Log.w(TAG, "Encoder thread already running");
return;
}
mRunning = true;
new Thread(this, "TextureMovieEncoder").start();
while (!mReady) {
try {
mReadyFence.wait();
} catch (InterruptedException ie) {
// ignore
}
}
}
mHandler.sendMessage(mHandler.obtainMessage(MSG_START_RECORDING, config));
System.out.println("startRecording end");
}
int orientation_local = -1;
public void encoder_reinitialisation(EGLContext eglContext, int orientation) {
System.out.println("encoder_reinitialisation start");
is_prepared = false;
System.out.println("encoder_reinitialisation before message oriebta = " + orientation);
mHandler.sendMessage(mHandler.obtainMessage(MSG_REINIT, eglContext));
System.out.println("encoder_reinitialisation after message");
orientation_local = orientation;
System.out.println("encoder_reinitialisation end");
}
public void stopRecording() {
System.out.println("stopRecording start");
if(mHandler != null) {
mHandler.sendMessage(mHandler.obtainMessage(MSG_STOP_RECORDING));
mHandler.sendMessage(mHandler.obtainMessage(MSG_QUIT));
}
// We don't know when these will actually finish (or even start). We don't want to
// delay the UI thread though, so we return immediately.
System.out.println("stopRecording end");
}
/**
* Returns true if recording has been started.
*/
public boolean isRecording() {
synchronized (mReadyFence) {
return mRunning;
}
}
public void updateSharedContext(EGLContext sharedContext) {
mHandler.sendMessage(mHandler.obtainMessage(MSG_UPDATE_SHARED_CONTEXT, sharedContext));
}
public void frameAvailable(SurfaceTexture st) {
System.out.println("frameAvailable start");
synchronized (mReadyFence) {
if (!mReady) {
return;
}
}
float[] transform = new float[16]; // TODO - avoid alloc every frame
st.getTransformMatrix(transform);
long timestamp = st.getTimestamp();
if (timestamp == 0) {
Log.w(TAG, "HEY: got SurfaceTexture with timestamp of zero");
return;
}
mHandler.sendMessage(mHandler.obtainMessage(MSG_FRAME_AVAILABLE,
(int) (timestamp >> 32), (int) timestamp, transform));
System.out.println("frameAvailable end");
}
public void setTextureId(int id) {
System.out.println("setTextureId start");
synchronized (mReadyFence) {
if (!mReady) {
return;
}
}
mHandler.sendMessage(mHandler.obtainMessage(MSG_SET_TEXTURE_ID, id, 0, null));
System.out.println("setTextureId end");
}
@Override
public void run() {
System.out.println("run start");
// Establish a Looper for this thread, and define a Handler for it.
Looper.prepare();
synchronized (mReadyFence) {
mHandler = new EncoderHandler(this);
mReady = true;
mReadyFence.notify();
}
Looper.loop();
Log.d(TAG, "Encoder thread exiting");
synchronized (mReadyFence) {
mReady = mRunning = false;
mHandler = null;
System.out.println("run end");
}
}
/**
* Handles encoder state change requests.
*/
private static class EncoderHandler extends Handler {
private WeakReference<TextureMovieEncoder> mWeakEncoder;
public EncoderHandler(TextureMovieEncoder encoder) {
mWeakEncoder = new WeakReference<TextureMovieEncoder>(encoder);
}
@Override
public void handleMessage(Message inputMessage) {
int what = inputMessage.what;
Object obj = inputMessage.obj;
TextureMovieEncoder encoder = mWeakEncoder.get();
if (encoder == null) {
Log.w(TAG, "EncoderHandler.handleMessage: encoder is null");
return;
}
switch (what) {
case MSG_START_RECORDING:
encoder.handleStartRecording((EncoderConfig) obj);
break;
case MSG_REINIT:
encoder.encoder_reinit((EGLContext) inputMessage.obj);
break;
case MSG_STOP_RECORDING:
encoder.handleStopRecording();
break;
case MSG_FRAME_AVAILABLE:
long timestamp = (((long) inputMessage.arg1) << 32) |
(((long) inputMessage.arg2) & 0xffffffffL);
encoder.handleFrameAvailable((float[]) obj, timestamp);
break;
case MSG_SET_TEXTURE_ID:
encoder.handleSetTexture(inputMessage.arg1);
break;
case MSG_UPDATE_SHARED_CONTEXT:
encoder.handleUpdateSharedContext((EGLContext) inputMessage.obj);
break;
case MSG_QUIT:
Looper.myLooper().quit();
break;
default:
throw new RuntimeException("Unhandled msg what=" + what);
}
}
}
/**
* Start recording.
*/
private void handleStartRecording(EncoderConfig config) {
Log.d(TAG, "handleStartRecording " + config);
mFrameNum = 0;
prepareEncoder(config.mEglContext, config.mWidth, config.mHeight, config.mBitRate,
config.mOutputFile);
}
private void encoder_reinit(EGLContext obj) {
System.out.println("encoder_reinit start ");
drainEncoder(true);
releaseEncoder();
prepareEncoder(obj, video_width, video_height, 1400000,
null);
System.out.println("encoder_reinit end ");
}
private void handleFrameAvailable(float[] transform, long timestamp) {
System.out.println("handleFrameAvailable start");
if (VERBOSE) Log.d(TAG, "handleFrameAvailable tr=" + transform);
if(is_prepared == true) {
drainEncoder(false);
mTextureRender.setTextureId(mTextureId);
mTextureRender.drawFrame(transform);
mInputWindowSurface.setPresentationTime(timestamp);
mInputWindowSurface.swapBuffers();
}
System.out.println("handleFrameAvailable end");
}
private void handleStopRecording() {
Log.d(TAG, "handleStopRecording");
drainEncoder(true);
releaseEncoder();
}
private void handleSetTexture(int id) {
//Log.d(TAG, "handleSetTexture " + id);
mTextureId = id;
}
/**
* Tears down the EGL surface and context we've been using to feed the MediaCodec input
* surface, and replaces it with a new one that shares with the new context.
*/
private void handleUpdateSharedContext(EGLContext newSharedContext) {
System.out.println("handleUpdateSharedContext start");
Log.d(TAG, "handleUpdatedSharedContext " + newSharedContext);
// Release the EGLSurface and EGLContext.
if(mInputWindowSurface != null) {
mInputWindowSurface.releaseEglSurface();
mEglBase.release();
}
// Create a new EGLContext and recreate the window surface.
mEglBase = new EglCore(newSharedContext, EglCore.FLAG_RECORDABLE);
mInputWindowSurface.recreate(mEglBase);
mInputWindowSurface.makeCurrent();
// Create new programs and such for the new context.
mTextureRender.surfaceCreated();
System.out.println("handleUpdateSharedContext end");
}
boolean created =false;
EGLContext sharedContext_local;
private Context context;
private void prepareEncoder(EGLContext sharedContext, int width, int height, int bitRate,
File outputFile) {
System.out.println("prepareEncoder start width = " + width + "height = " + height);
sharedContext_local = sharedContext;
enc_strm = new byte[width * height * 3 / 2];
encoded_data_buffer = new ofi_vc_buffer();
video_width = width;
video_height = height;
if(!created) {
try {
fp_enc = new FileOutputStream(enc_file);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
try {
enc_len = new PrintWriter(Environment.getExternalStorageDirectory().getPath() + "/encoded_len.xls");
} catch (FileNotFoundException e) {
e.printStackTrace();
}
created = true;
}
mBufferInfo = new MediaCodec.BufferInfo();
MediaFormat format = null;
if(orientation_local == 1) {
System.out.println("videoformatting portrait");
format = MediaFormat.createVideoFormat(MIME_TYPE, width, height);
} else {
System.out.println("videoformatting landscape");
format = MediaFormat.createVideoFormat(MIME_TYPE, height, width);
}
// Set some properties. Failing to specify some of these can cause the MediaCodec
// configure() call to throw an unhelpful exception.
format.setInteger(MediaFormat.KEY_COLOR_FORMAT,
MediaCodecInfo.CodecCapabilities.COLOR_FormatSurface);
format.setInteger(MediaFormat.KEY_BIT_RATE, bitRate);
format.setInteger(MediaFormat.KEY_FRAME_RATE, FRAME_RATE);
format.setInteger(MediaFormat.KEY_I_FRAME_INTERVAL, IFRAME_INTERVAL);
if (VERBOSE) Log.d(TAG, "format: " + format);
mEncoder = MediaCodec.createEncoderByType(MIME_TYPE);
mEncoder.configure(format, null, null, MediaCodec.CONFIGURE_FLAG_ENCODE);
mEglBase = new EglCore(sharedContext, EglCore.FLAG_RECORDABLE);
mInputWindowSurface = new WindowSurface(mEglBase, mEncoder.createInputSurface());
mEncoder.start();
mInputWindowSurface.makeCurrent();
mTextureRender = new TextureRender(context);
mTextureRender.surfaceCreated();
mTrackIndex = -1;
mMuxerStarted = false;
is_prepared = true;
System.out.println("prepareEncoder end");
}
/**
* Releases encoder resources.
*/
private void releaseEncoder() {
System.out.println("releaseEncoder end");
if (VERBOSE) Log.d(TAG, "releasing encoder objects");
if (mEncoder != null) {
mEncoder.stop();
mEncoder.release();
mEncoder = null;
}
if (mInputWindowSurface != null) {
mInputWindowSurface.release();
mInputWindowSurface = null;
}
if (mEglBase != null) {
mEglBase.release();
mEglBase = null;
}
if (mMuxer != null) {
mMuxer.stop();
mMuxer.release();
mMuxer = null;
}
System.out.println("releaseEncoder start");
}
byte[] enc_strm = null;
byte sps_pps_nal[] = null;
int sps_pps_nal_size = 0;
ofi_vc_buffer encoded_data_buffer = null;
private int encod_len = 0;
private int frame_type;
private encoded_stream_info enc_buffer_global;
private int video_width;
private int video_height;
private void drainEncoder(boolean endOfStream) {
System.out.println("drainEncoder start");
final int TIMEOUT_USEC = 10000;
if (VERBOSE) Log.d(TAG, "drainEncoder(" + endOfStream + ")");
if (endOfStream) {
if (VERBOSE) Log.d(TAG, "sending EOS to encoder");
mEncoder.signalEndOfInputStream();
}
//encoded_stream_info enc_buffer = new encoded_stream_info(video_width * video_height * 3 / 2);
ByteBuffer[] encoderOutputBuffers = mEncoder.getOutputBuffers();
while (true) {
int encoderStatus = mEncoder.dequeueOutputBuffer(mBufferInfo, TIMEOUT_USEC);
if (encoderStatus == MediaCodec.INFO_TRY_AGAIN_LATER) {
// no output available yet
if (!endOfStream) {
break; // out of while
} else {
if (VERBOSE) Log.d(TAG, "no output available, spinning to await EOS");
}
} else if (encoderStatus == MediaCodec.INFO_OUTPUT_BUFFERS_CHANGED) {
// not expected for an encoder
encoderOutputBuffers = mEncoder.getOutputBuffers();
} else if (encoderStatus == MediaCodec.INFO_OUTPUT_FORMAT_CHANGED) {
// should happen before receiving buffers, and should only happen once
if (mMuxerStarted) {
throw new RuntimeException("format changed twice");
}
MediaFormat newFormat = mEncoder.getOutputFormat();
Log.d(TAG, "encoder output format changed: " + newFormat);
// now that we have the Magic Goodies, start the muxer
// mTrackIndex = mMuxer.addTrack(newFormat);
// mMuxer.start();
// mMuxerStarted = true;
} else if (encoderStatus < 0) {
Log.w(TAG, "unexpected result from encoder.dequeueOutputBuffer: " +
encoderStatus);
// let's ignore it
} else {
ByteBuffer encodedData = encoderOutputBuffers[encoderStatus];
if (encodedData == null) {
throw new RuntimeException("encoderOutputBuffer " + encoderStatus +
" was null");
}
if ((mBufferInfo.flags & MediaCodec.BUFFER_FLAG_CODEC_CONFIG) != 0) {
// The codec config data was pulled out and fed to the muxer when we got
// the INFO_OUTPUT_FORMAT_CHANGED status. Ignore it.
if (VERBOSE) Log.d("Main", "ignoring BUFFER_FLAG_CODEC_CONFIG");
encodedData.position(mBufferInfo.offset);
encodedData.limit(mBufferInfo.offset + mBufferInfo.size);
System.out.println("Encode SPS PPS buffer size" + mBufferInfo.size );
sps_pps_nal_size = mBufferInfo.size;
sps_pps_nal = new byte[sps_pps_nal_size];
encodedData.get(sps_pps_nal, 0, sps_pps_nal_size);
mBufferInfo.size = 0;
}
if (mBufferInfo.size != 0) {
// if (!mMuxerStarted) {
// throw new RuntimeException("muxer hasn't started");
// }
// adjust the ByteBuffer values to match BufferInfo (not needed?)
encodedData.position(mBufferInfo.offset);
encodedData.limit(mBufferInfo.offset + mBufferInfo.size);
encodedData.get(enc_strm, sps_pps_nal_size, mBufferInfo.size);
System.arraycopy(sps_pps_nal, 0, enc_strm, 0, sps_pps_nal_size);
encod_len = mBufferInfo.size + sps_pps_nal_size;
if ((enc_strm[sps_pps_nal_size + 4] & 0x1F)== 5) {
frame_type = 2;
} else {
frame_type = 0;
}
//mMuxer.writeSampleData(mTrackIndex, encodedData, mBufferInfo);
if (VERBOSE) {
Log.d("Main", "sent " + mBufferInfo.size + " bytes to muxer, ts=" +
mBufferInfo.presentationTimeUs);
}
enc_buffer_global.encoded_len = 0; // frame sending is disabled.
if(enc_buffer_global.encoded_len == 0) {
enc_buffer_global.encoded_data = enc_strm;
enc_buffer_global.encoded_len = encod_len;
enc_buffer_global.frame_type = frame_type;
// System.out.println("encoded Wrote stream len =" + enc_buffer_global.encoded_len);
try {
fp_enc.write(enc_strm, 0, encod_len);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
fp_enc.flush();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
enc_len.format("%d\n", encod_len);
enc_len.flush();
}
}
mEncoder.releaseOutputBuffer(encoderStatus, false);
if ((mBufferInfo.flags & MediaCodec.BUFFER_FLAG_END_OF_STREAM) != 0) {
if (!endOfStream) {
Log.w(TAG, "reached end of stream unexpectedly");
} else {
if (VERBOSE) Log.d(TAG, "end of stream reached");
}
break; // out of while
}
}
}
System.out.println("drainEncoder end");
}
public void set_buffer(encoded_stream_info bufer) {
enc_buffer_global = bufer;
}
}
除了这些我已添加
EglCore.java
EglSurfaceBase.java
TextureRender.java
WindowSurface.java
以上给出的grafika链接中的类。
仍然我无法弄清楚我的应用在重新初始化期间被冻结的原因。但有时它也有效。
任何人都可以提供帮助....
否则我应该采取哪些措施来改变编码分辨率。
提前致谢...........
答案 0 :(得分：0)
我使用以下代码进行了工作....
public void onConfigurationChanged(Configuration newConfig) {
System.out.println("On config change start ");
super.onConfigurationChanged(newConfig);
mGLView.queueEvent(new Runnable() {
@Override public void run() {
// Tell the renderer that it's about to be paused so it can clean up.
mRenderer.notifyPausing();
}
});
mGLView.queueEvent(new Runnable() {
@Override public void run() {
mRenderer.re_init();
}
});
}
其中重新初始化函数是。
public void re_init() {
mTextureRender = new TextureRender(cntex);
mTextureRender.surfaceCreated();
if (ROSE_COLORED_GLASSES) {
String rosyFragment =
"#extension GL_OES_EGL_image_external : require\n" +
"precision mediump float;\n" +
"varying vec2 vTextureCoord;\n" +
"uniform samplerExternalOES sTexture;\n" +
"void main() {\n" +
" vec4 tc = texture2D(sTexture, vTextureCoord);\n" +
" gl_FragColor.r = tc.r * 0.3 + tc.g * 0.59 + tc.b * 0.11;\n" +
"}\n";
mTextureRender.changeFragmentShader(rosyFragment);
}
mSurfaceTexture = new SurfaceTexture(mTextureRender.getTextureId());
mCameraHandler.sendMessage(mCameraHandler.obtainMessage(
MainActivity.CameraHandler.MSG_SET_SURFACE_TEXTURE, mSurfaceTexture));
if (cntex.getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT) {
mVideoEncoder.startRecording(new TextureMovieEncoder.EncoderConfig(
mOutputFile, 640, 480, 1400000, EGL14.eglGetCurrentContext()));
} else {
mVideoEncoder.startRecording(new TextureMovieEncoder.EncoderConfig(
mOutputFile, 480, 640, 1400000, EGL14.eglGetCurrentContext()));
}
//mVideoEncoder.updateSharedContext(EGL14.eglGetCurrentContext());
}
并且在mRenderer.notifyPausing（）中我还添加了videoEncoder.stopRecording（）调用，它将等待整个记录器停止（在那里进行基于对象的同步）。
但整个重新初始化需要250 - 400毫秒................