/**
* Edits a video file, saving the contents to a new file. This involves decoding and
* re-encoding, not to mention conversions between YUV and RGB, and so may be lossy.
* <p>
* If we recognize the decoded format we can do this in Java code using the ByteBuffer[]
* output, but it's not practical to support all OEM formats. By using a SurfaceTexture
* for output and a Surface for input, we can avoid issues with obscure formats and can
* use a fragment shader to do transformations.
*/
private VideoChunks editVideoFile(VideoChunks inputData)
{
if (AppSettings.Logging.SendToConsole)
{
Log.Debug(TAG, "editVideoFile " + mWidth + "x" + mHeight);
}
VideoChunks outputData = new VideoChunks();
MediaCodec decoder = null;
MediaCodec encoder = null;
InputSurface inputSurface = null;
OutputSurface outputSurface = null;
try {
MediaFormat inputFormat = inputData.getMediaFormat();
// Create an encoder format that matches the input format. (Might be able to just
// re-use the format used to generate the video, since we want it to be the same.)
MediaFormat outputFormat = MediaFormat.CreateVideoFormat(MIME_TYPE, mWidth, mHeight);
outputFormat.SetInteger(MediaFormat.KeyColorFormat, (int)MediaCodecInfo.CodecCapabilities.COLORFormatSurface);
outputFormat.SetInteger(MediaFormat.KeyBitRate, inputFormat.GetInteger(MediaFormat.KeyBitRate));
outputFormat.SetInteger(MediaFormat.KeyFrameRate, inputFormat.GetInteger(MediaFormat.KeyFrameRate));
outputFormat.SetInteger(MediaFormat.KeyIFrameInterval, inputFormat.GetInteger(MediaFormat.KeyIFrameInterval));
outputData.setMediaFormat(outputFormat);
encoder = MediaCodec.CreateEncoderByType(MIME_TYPE);
encoder.Configure(outputFormat, null, null, MediaCodecConfigFlags.Encode);
inputSurface = new InputSurface(encoder.CreateInputSurface());
inputSurface.MakeCurrent();
encoder.Start();
// OutputSurface uses the EGL context created by InputSurface.
decoder = MediaCodec.CreateDecoderByType(MIME_TYPE);
outputSurface = new OutputSurface();
outputSurface.ChangeFragmentShader(FRAGMENT_SHADER);
decoder.Configure(inputFormat, outputSurface.Surface, null, 0);
decoder.Start();
editVideoData(inputData, decoder, outputSurface, inputSurface, encoder, outputData);
} finally {
if (AppSettings.Logging.SendToConsole)
{
Log.Debug(TAG, "shutting down encoder, decoder");
}
if (outputSurface != null)
{
outputSurface.Release();
}
if (inputSurface != null)
{
inputSurface.Release();
}
if (encoder != null)
{
encoder.Stop();
encoder.Release();
}
if (decoder != null)
{
decoder.Stop();
decoder.Release();
}
}
return(outputData);
}
protected override void OnDraw(Canvas canvas)
{
if (rtspCancel == null)
{
rtspClientStart();
}
if (codec == null && (h264 || h265))
{
codec = MediaCodec.CreateDecoderByType(h265
? MediaFormat.MimetypeVideoHevc
: MediaFormat.MimetypeVideoAvc);
callbacks = new CallBacks(this);
codec.SetCallback(callbacks);
var mediafmt = MediaFormat.CreateVideoFormat(h265
? MediaFormat.MimetypeVideoHevc
: MediaFormat.MimetypeVideoAvc, 1920, 1080);
codec.Configure(mediafmt, videoView.Holder.Surface, null, MediaCodecConfigFlags.None);
codec.Start();
}
base.OnDraw(canvas);
}
public void SetupVideo(int width, int height, byte[] spsData, byte[] ppsData)
{
MediaFormat videoFormat = MediaFormat.CreateVideoFormat(
mime: MediaFormat.MimetypeVideoAvc,
width: width,
height: height);
/*
* TODO: Use SPS / PPS
* videoFormat.SetByteBuffer("csd-0", Java.Nio.ByteBuffer.Wrap(spsData));
* videoFormat.SetByteBuffer("csd-1", Java.Nio.ByteBuffer.Wrap(ppsData));
*/
videoFormat.SetInteger(MediaFormat.KeyMaxInputSize, 100000);
_videoCodec = MediaCodec.CreateDecoderByType(
MediaFormat.MimetypeVideoAvc);
_videoCodec.SetCallback(this);
_videoCodec.Configure(format: videoFormat,
surface: new Surface(_surface),
crypto: null,
flags: MediaCodecConfigFlags.None);
_videoCodec.Start();
}
public bool setup(DecoderCallback callback_obj, int width, int height) //format_hint is aviFileContent
{
callbackThread = new HandlerThread("H264DecoderHandler");
callbackThread.Start();
handler = new Handler(callbackThread.Looper);
mDecoder = MediaCodec.CreateDecoderByType(MIME);
mCallbackObj = callback_obj;
myCallback = new MyCallback(mDecoder, mCallbackObj);
mDecoder.SetCallback(myCallback, handler);
//mOutputFormat = mDecoder.GetOutputFormat(); // option B
inputFormat = MediaFormat.CreateVideoFormat(MIME, width, height);
inputFormat.SetInteger(MediaFormat.KeyMaxInputSize, width * height);
inputFormat.SetInteger("durationUs", 63446722);
//inputFormat.SetInteger(MediaFormat.KeyColorFormat, (int)MediaCodecCapabilities.Formatyuv420semiplanar);
//inputFormat.SetInteger(MediaFormat.KeyIFrameInterval, 60);
try
{
mDecoder.Configure(inputFormat, null, null, 0 /* Decoder */);
}
catch (Exception ex)
{
throw ex;
}
Console.WriteLine("before mDecoder.Start()");
mDecoder.Start();
Console.WriteLine("after mDecoder.Start()");
return(true);
}
private static MediaFormat GetMediaFormat(string mimeType, int videoWidth, int videoHeight)
{
var format = MediaFormat.CreateVideoFormat(
mime: mimeType,
width: videoWidth,
height: videoHeight);
format.SetInteger(MediaFormat.KeyMaxInputSize, 100000);
return(format);
}
private void Init()
{
if (sps.Length == 14)
decoderWidth = 1280;
else
decoderWidth = 960;
MediaFormat videoFormat = MediaFormat.CreateVideoFormat("video/avc", decoderWidth, decoderHeight);
videoFormat.SetByteBuffer("csd-0", ByteBuffer.Wrap(sps));
videoFormat.SetByteBuffer("csd-1", ByteBuffer.Wrap(pps));
string str = videoFormat.GetString("mime");
try
{
var cdx = MediaCodec.CreateDecoderByType(str);
cdx.Configure(videoFormat, Holder.Surface, (MediaCrypto)null, 0);
cdx.SetVideoScalingMode(VideoScalingMode.ScaleToFit);
cdx.Start();
codec = cdx;
}
catch (Exception ex)
{
//handle
}
bConfigured = true;
//set surface aspect ratio
MainActivity.getActivity().RunOnUiThread(() =>
{
float videoProportion = (float)decoderWidth / (float)decoderHeight;
var size = new Android.Graphics.Point();
MainActivity.getActivity().WindowManager.DefaultDisplay.GetSize(size);
int screenWidth = size.X;
int screenHeight = size.Y;
float screenProportion = (float)screenWidth / (float)screenHeight;
var lp = this.LayoutParameters;
if (videoProportion > screenProportion)
{
lp.Width = screenWidth;
lp.Height = (int)((float)screenWidth / videoProportion);
}
else
{
lp.Width = (int)(videoProportion * (float)screenHeight);
lp.Height = screenHeight;
}
this.LayoutParameters = lp;
});
}
/**
* Instantiates and starts the decoder.
* @throws IOException The decoder cannot be configured
*/
private void configureDecoder()
{
byte[] prefix = new byte[] { 0x00, 0x00, 0x00, 0x01 };
ByteBuffer csd0 = ByteBuffer.Allocate(4 + mSPS.Length + 4 + mPPS.Length);
csd0.Put(new byte[] { 0x00, 0x00, 0x00, 0x01 });
csd0.Put(mSPS);
csd0.Put(new byte[] { 0x00, 0x00, 0x00, 0x01 });
csd0.Put(mPPS);
mDecoder = MediaCodec.CreateByCodecName(mDecoderName);
MediaFormat mediaFormat = MediaFormat.CreateVideoFormat(MIME_TYPE, mWidth, mHeight);
mediaFormat.SetByteBuffer("csd-0", csd0);
mediaFormat.SetInteger(MediaFormat.KeyColorFormat, mDecoderColorFormat);
mDecoder.Configure(mediaFormat, null, null, 0);
mDecoder.Start();
ByteBuffer[] decInputBuffers = mDecoder.GetInputBuffers();
int decInputIndex = mDecoder.DequeueInputBuffer(1000000 / FRAMERATE);
if (decInputIndex >= 0)
{
decInputBuffers[decInputIndex].Clear();
decInputBuffers[decInputIndex].Put(prefix);
decInputBuffers[decInputIndex].Put(mSPS);
mDecoder.QueueInputBuffer(decInputIndex, 0, decInputBuffers[decInputIndex].Position(), timestamp(), 0);
}
else
{
if (VERBOSE)
{
Log.e(TAG, "No buffer available !");
}
}
decInputIndex = mDecoder.DequeueInputBuffer(1000000 / FRAMERATE);
if (decInputIndex >= 0)
{
decInputBuffers[decInputIndex].Clear();
decInputBuffers[decInputIndex].Put(prefix);
decInputBuffers[decInputIndex].Put(mPPS);
mDecoder.QueueInputBuffer(decInputIndex, 0, decInputBuffers[decInputIndex].Position(), timestamp(), 0);
}
else
{
if (VERBOSE)
{
Log.Error(TAG, "No buffer available !");
}
}
}
/**
* Instantiates and starts the encoder.
* @throws IOException The encoder cannot be configured
*/
private void configureEncoder()
{
mEncoder = MediaCodec.CreateByCodecName(mEncoderName);
MediaFormat mediaFormat = MediaFormat.CreateVideoFormat(MIME_TYPE, mWidth, mHeight);
mediaFormat.SetInteger(MediaFormat.KeyBitRate, BITRATE);
mediaFormat.SetInteger(MediaFormat.KeyFrameRate, FRAMERATE);
mediaFormat.SetInteger(MediaFormat.KeyColorFormat, mEncoderColorFormat);
mediaFormat.SetInteger(MediaFormat.KeyIFrameInterval, 1);
mEncoder.Configure(mediaFormat, null, null, MediaCodecConfigFlags.Encode);
mEncoder.Start();
}
public VideoStreamer(int width, int height)
{
MediaFormat videoFormat = MediaFormat.CreateVideoFormat(MediaFormat.MimetypeVideoAvc, width, height);
MediaCodecList availableCodecs = new MediaCodecList(MediaCodecListKind.RegularCodecs);
MediaCodec encoder = MediaCodec.CreateEncoderByType(MediaFormat.MimetypeVideoAvc);
_backgroundThread = new HandlerThread("EncoderBackgroundWorker");
_backgroundThread.Start();
_backgroundHandler = new Handler(_backgroundThread.Looper);
encoder.SetCallback(new EncoderCallback(), _backgroundHandler);
encoder.Configure(videoFormat, null, null, MediaCodecConfigFlags.Encode);
encoder.Start();
}
/**
* Configures encoder and muxer state, and prepares the input Surface. Initializes
* mEncoder, mMuxer, mInputSurface, mBufferInfo, mTrackIndex, and mMuxerStarted.
*/
private void prepareEncoder()
{
mBufferInfo = new MediaCodec.BufferInfo();
MediaFormat format = MediaFormat.CreateVideoFormat(MIME_TYPE, _width, _height);
// Set some properties. Failing to specify some of these can cause the MediaCodec
// configure() call to throw an unhelpful exception.
format.SetInteger(MediaFormat.KeyColorFormat, (int)MediaCodecCapabilities.Formatsurface);
format.SetInteger(MediaFormat.KeyBitRate, _bitRate);
format.SetInteger(MediaFormat.KeyFrameRate, FRAME_RATE);
format.SetInteger(MediaFormat.KeyIFrameInterval, IFRAME_INTERVAL);
if (VERBOSE)
{
Log.Debug(TAG, "format: " + format);
}
// Create a MediaCodec encoder, and configure it with our format. Get a Surface
// we can use for input and wrap it with a class that handles the EGL work.
//
// If you want to have two EGL contexts -- one for display, one for recording --
// you will likely want to defer instantiation of CodecInputSurface until after the
// "display" EGL context is created, then modify the eglCreateContext call to
// take eglGetCurrentContext() as the share_context argument.
mEncoder = MediaCodec.CreateEncoderByType(MIME_TYPE);
mEncoder.Configure(format, null, null, MediaCodec.ConfigureFlagEncode);
_inputSurface = new InputSurface(mEncoder.CreateInputSurface());
mEncoder.Start();
// Output filename. Ideally this would use Context.getFilesDir() rather than a
// hard-coded output directory.
string outputPath = System.IO.Path.Combine(_workingDirectory, "test." + _width + "x" + _height + ".mp4");
Log.Info(TAG, "Output file is " + outputPath);
// Create a MediaMuxer. We can't add the video track and start() the muxer here,
// because our MediaFormat doesn't have the Magic Goodies. These can only be
// obtained from the encoder after it has started processing data.
//
// We're not actually interested in multiplexing audio. We just want to convert
// the raw H.264 elementary stream we get from MediaCodec into a .mp4 file.
try {
mMuxer = new MediaMuxer(outputPath, MediaMuxer.OutputFormat.MuxerOutputMpeg4);
} catch (System.Exception e) {
throw new System.Exception(e.Message);
}
mTrackIndex = -1;
mMuxerStarted = false;
}
private void PrepareEncoder()
{
MediaCodecInfo codecInfo = selectCodec(MIME_TYPE);
if (codecInfo == null)
{
return;
}
int colorFormat;
try
{
colorFormat = selectColorFormat(codecInfo, MIME_TYPE);
}
catch
{
colorFormat = (int)MediaCodecCapabilities.Formatyuv420semiplanar;
}
var format = MediaFormat.CreateVideoFormat(MIME_TYPE, _Width, _Height);
format.SetInteger(MediaFormat.KeyColorFormat, colorFormat);
format.SetInteger(MediaFormat.KeyBitRate, _BitRate);
format.SetInteger(MediaFormat.KeyFrameRate, _frameRate);
format.SetInteger(MediaFormat.KeyIFrameInterval, IFRAME_INTERVAL);
_Encoder = MediaCodec.CreateEncoderByType(MIME_TYPE);
_Encoder.Configure(format, null, null, MediaCodecConfigFlags.Encode);
_Encoder.Start();
// Create a MediaMuxer. We can't add the video track and start() the muxer here,
// because our MediaFormat doesn't have the Magic Goodies. These can only be
// obtained from the encoder after it has started processing data.
try
{
_Muxer = new MediaMuxer(_Filepath, MuxerOutputType.Mpeg4);
}
catch (Exception e)
{
Log.Error(TAG, e.Message, e);
throw;
}
_TrackIndex = -1;
_MuxerStarted = false;
}
public BufferPlayer(Surface surface) : base(surface)
{
format = MediaFormat.CreateVideoFormat("video/avc", 720, 480);
//these are custom/dependant upon the source of the video
//**TODO: search for and find them @ runtime. (it is not hard to do), but that
//can cause a slight delay in initial video rendering.
var sps = new byte[] { 0, 0, 0, 1, 103, 66, 224, 30, 218, 2, 208, 246, 192, 68, 0, 0, 46, 236, 0, 10, 252, 130, 16 };
var pps = new byte[] { 0, 0, 0, 1, 104, 206, 60, 128 };
format.SetByteBuffer("csd-0", Java.Nio.ByteBuffer.Wrap(sps));
format.SetByteBuffer("csd-1", Java.Nio.ByteBuffer.Wrap(pps));
format.SetInteger(MediaFormat.KeyMaxInputSize, 720 * 480);//don't need this if you look up the pps/sps?
Log.Debug(TAG, "format: " + format);
}
private void SetupEncoder()
{
MediaFormat outputFormat = MediaFormat.CreateVideoFormat(MediaHelper.MIME_TYPE_AVC, mWidth, mHeight);
outputFormat.SetInteger(MediaFormat.KeyColorFormat, (int)MediaCodecCapabilities.Formatsurface);
outputFormat.SetInteger(MediaFormat.KeyBitRate, mBitRate);
outputFormat.SetInteger(MediaFormat.KeyFrameRate, mFrameRate);
outputFormat.SetInteger(MediaFormat.KeyIFrameInterval, mIFrameInterval);
mEncoder = MediaCodec.CreateEncoderByType(MediaHelper.MIME_TYPE_AVC);
mEncoder.Configure(outputFormat, null, null, MediaCodecConfigFlags.Encode);
mInputSurface = new InputSurface(mEncoder.CreateInputSurface());
mInputSurface.MakeCurrent();
mEncoder.Start();
}
private static void Init()
{
MediaFormat videoFormat = MediaFormat.CreateVideoFormat("video/avc", width, height);
videoFormat.SetByteBuffer("csd-0", ByteBuffer.Wrap(sps));
videoFormat.SetByteBuffer("csd-1", ByteBuffer.Wrap(pps));
string str = videoFormat.GetString("mime");
try
{
var cdx = MediaCodec.CreateDecoderByType(str);
cdx.Configure(videoFormat, picSurface, (MediaCrypto)null, 0);
cdx.SetVideoScalingMode(VideoScalingMode.ScaleToFit);
cdx.Start();
picCodec = cdx;
//codec = picCodec;
}
catch (Exception ex)
{
}
videoFormat = MediaFormat.CreateVideoFormat("video/avc", 1280, 720);
videoFormat.SetByteBuffer("csd-0", ByteBuffer.Wrap(vidSps));
videoFormat.SetByteBuffer("csd-1", ByteBuffer.Wrap(pps));
try
{
var cdx = MediaCodec.CreateDecoderByType(videoFormat.GetString("mime"));
cdx.Configure(videoFormat, vidSurface, (MediaCrypto)null, 0);
cdx.SetVideoScalingMode(VideoScalingMode.ScaleToFit);
cdx.Start();
vidCodec = cdx;
}
catch (Exception ex)
{
}
bConfigured = true;
}
public MediaFormat CreateVideoOutputFormat(MediaFormat inputFormat)
{
int width = inputFormat.GetInteger(MediaFormat.KeyWidth);
int height = inputFormat.GetInteger(MediaFormat.KeyHeight);
int longer, shorter, outWidth, outHeight;
if (width >= height)
{
longer = width;
shorter = height;
outWidth = LONGER_LENGTH;
outHeight = SHORTER_LENGTH;
}
else
{
shorter = width;
longer = height;
outWidth = SHORTER_LENGTH;
outHeight = LONGER_LENGTH;
}
//if (longer * 9 != shorter * 16)
//{
// throw new OutputFormatUnavailableException("This video is not 16:9, and is not able to transcode. (" + width + "x" + height + ")");
//}
if (shorter <= SHORTER_LENGTH)
{
#if DEBUG
System.Console.WriteLine("This video is less or equal to 720p, pass-through. (" + width + "x" + height + ")");
#endif
return(null);
}
MediaFormat format = MediaFormat.CreateVideoFormat("video/avc", outWidth, outHeight);
format.SetInteger(MediaFormat.KeyBitRate, mVideoBitrate);
format.SetInteger(MediaFormat.KeyFrameRate, 30);
format.SetInteger(MediaFormat.KeyIFrameInterval, 3);
// this is obsolete: MediaCodecInfo.CodecCapabilities.COLORFormatSurface, so using MediaCodecCapabilities.Formatsurface instead
format.SetInteger(MediaFormat.KeyColorFormat, (int)MediaCodecCapabilities.Formatsurface);
return(format);
}
static public void config(Surface surface, int width, int height, byte[] sps, byte[] pps)
{
if (sps == null || pps == null)//not ready.
{
return;
}
if (bConfigured)
{
return;
}
if (codec != null)
{
stop();
}
Decoder.width = width;
Decoder.height = height;
Decoder.sps = sps;
Decoder.pps = pps;
MediaFormat videoFormat = MediaFormat.CreateVideoFormat("video/avc", width, height);
videoFormat.SetByteBuffer("csd-0", ByteBuffer.Wrap(sps));
videoFormat.SetByteBuffer("csd-1", ByteBuffer.Wrap(pps));
videoFormat.SetInteger("color-format", 19);
string str = videoFormat.GetString("mime");
try
{
codec = MediaCodec.CreateDecoderByType(str);
codec.Configure(videoFormat, surface, (MediaCrypto)null, 0);
codec.SetVideoScalingMode(VideoScalingMode.ScaleToFit);
codec.Start();
bConfigured = true;
}
catch (Exception ex)
{
var errstr = ex.Message.ToString();
}
}
/**
* Configures encoder and muxer state, and prepares the input Surface. Initializes
* mEncoder, mMuxer, mInputSurface, mBufferInfo, mTrackIndex, and mMuxerStarted.
*/
private void prepareEncoder(string outputPath)
{
_bfi = new MediaCodec.BufferInfo();
LatestOutputPath = outputPath;
MediaFormat format = MediaFormat.CreateVideoFormat(MIME_TYPE, _width, _height);
// Set some properties. Failing to specify some of these can cause the MediaCodec
// configure() call to throw an unhelpful exception.
format.SetInteger(MediaFormat.KeyColorFormat, (int)MediaCodecCapabilities.Formatsurface);
format.SetInteger(MediaFormat.KeyBitRate, _bitRate);
format.SetInteger(MediaFormat.KeyFrameRate, FRAME_RATE);
format.SetInteger(MediaFormat.KeyIFrameInterval, IFRAME_INTERVAL);
if (AppSettings.Logging.SendToConsole)
{
Log.Debug(TAG, "format: " + format);
}
// Create a MediaCodec encoder, and configure it with our format. Get a Surface
// we can use for input and wrap it with a class that handles the EGL work.
//
// If you want to have two EGL contexts -- one for display, one for recording --
// you will likely want to defer instantiation of CodecInputSurface until after the
// "display" EGL context is created, then modify the eglCreateContext call to
// take eglGetCurrentContext() as the share_context argument.
mEncoder = MediaCodec.CreateEncoderByType(MIME_TYPE);
mEncoder.Configure(format, null, null, MediaCodec.ConfigureFlagEncode);
_inputSurface = new InputSurface(mEncoder.CreateInputSurface());
mEncoder.Start();
Log.Info(TAG, "Output file is " + outputPath);
try {
_muxer = new MediaMuxer(outputPath, MediaMuxer.OutputFormat.MuxerOutputMpeg4);
} catch (System.Exception e) {
throw new System.Exception(e.Message);
}
mTrackIndex = -1;
MuxerStarted = false;
}
/**
* Video encoding is done by a MediaCodec.
*/
protected void encodeWithMediaCodecMethod1() {
Log.Debug(TAG,"Video encoded using the MediaCodec API with a buffer");
// Updates the parameters of the camera if needed
createCamera();
updateCamera();
// Estimates the frame rate of the camera
measureFramerate();
// Starts the preview if needed
if (!mPreviewStarted) {
try {
mCamera.startPreview();
mPreviewStarted = true;
} catch (RuntimeException e) {
destroyCamera();
throw e;
}
}
EncoderDebugger debugger = EncoderDebugger.debug(mSettings, mQuality.resX, mQuality.resY);
const NV21Convertor convertor = debugger.getNV21Convertor();
mMediaCodec = MediaCodec.CreateByCodecName(debugger.getEncoderName());
MediaFormat mediaFormat = MediaFormat.CreateVideoFormat("video/avc", mQuality.resX, mQuality.resY);
mediaFormat.SetInteger(MediaFormat.KeyBitRate, mQuality.bitrate);
mediaFormat.SetInteger(MediaFormat.KeyFrameRate, mQuality.framerate);
mediaFormat.SetInteger(MediaFormat.KeyColorFormat,debugger.getEncoderColorFormat());
mediaFormat.SetInteger(MediaFormat.KeyIFrameInterval, 1);
mMediaCodec.Configure(mediaFormat, null, null, MediaCodecConfigFlags.Encode);
mMediaCodec.Start();
Camera.PreviewCallback callback = new Camera.PreviewCallback() Action InnerMethod = () =>{
long now = System.nanoTime()/1000, oldnow = now, i=0;
ByteBuffer[] inputBuffers = mMediaCodec.getInputBuffers();
@Override
/**
* Generates a test video file, saving it as VideoChunks. We generate frames with GL to
* avoid having to deal with multiple YUV formats.
*
* @return true on success, false on "soft" failure
*/
private bool generateVideoFile(VideoChunks output)
{
if (AppSettings.Logging.SendToConsole)
{
Log.Debug(TAG, "generateVideoFile " + mWidth + "x" + mHeight);
}
MediaCodec encoder = null;
InputSurface inputSurface = null;
try {
MediaCodecInfo codecInfo = selectCodec(MIME_TYPE);
if (codecInfo == null)
{
// Don't fail CTS if they don't have an AVC codec (not here, anyway).
Log.Error(TAG, "Unable to find an appropriate codec for " + MIME_TYPE);
return(false);
}
if (AppSettings.Logging.SendToConsole)
{
Log.Debug(TAG, "found codec: " + codecInfo.Name);
}
// We avoid the device-specific limitations on width and height by using values that
// are multiples of 16, which all tested devices seem to be able to handle.
MediaFormat format = MediaFormat.CreateVideoFormat(MIME_TYPE, mWidth, mHeight);
// Set some properties. Failing to specify some of these can cause the MediaCodec
// configure() call to throw an unhelpful exception.
format.SetInteger(MediaFormat.KeyColorFormat,
(int)MediaCodecCapabilities.Formatsurface);
format.SetInteger(MediaFormat.KeyBitRate, mBitRate);
format.SetInteger(MediaFormat.KeyFrameRate, FRAME_RATE);
format.SetInteger(MediaFormat.KeyIFrameInterval, IFRAME_INTERVAL);
if (AppSettings.Logging.SendToConsole)
{
Log.Debug(TAG, "format: " + format);
}
output.setMediaFormat(format);
// Create a MediaCodec for the desired codec, then configure it as an encoder with
// our desired properties.
encoder = MediaCodec.CreateByCodecName(codecInfo.Name);
encoder.Configure(format, null, null, MediaCodecConfigFlags.Encode);
inputSurface = new InputSurface(encoder.CreateInputSurface());
inputSurface.MakeCurrent();
encoder.Start();
generateVideoData(encoder, inputSurface, output);
} finally {
if (encoder != null)
{
if (AppSettings.Logging.SendToConsole)
{
Log.Debug(TAG, "releasing encoder");
}
encoder.Stop();
encoder.Release();
if (AppSettings.Logging.SendToConsole)
{
Log.Debug(TAG, "released encoder");
}
}
if (inputSurface != null)
{
inputSurface.Release();
}
}
return(true);
}
// https://github.com/lanhq147/SampleMediaFrame/blob/e2f20ff9eef73318e5a9b4de15458c5c2eb0fd46/app/src/main/java/com/google/android/exoplayer2/video/av/HWRecorder.java
public bool BeginEncoding(int resX, int resY, int rateNumer, int rateDenom, int videoBitRate, int audioBitRate, string audioFile, string outputFile)
{
videoBufferInfo = new MediaCodec.BufferInfo();
audioBufferInfo = new MediaCodec.BufferInfo();
frameRateNumer = rateNumer;
frameRateDenom = rateDenom;
MediaFormat videoFormat = MediaFormat.CreateVideoFormat(VideoMimeType, resX, resY);
videoFormat.SetInteger(MediaFormat.KeyColorFormat, (int)MediaCodecCapabilities.Formatsurface);
videoFormat.SetInteger(MediaFormat.KeyBitRate, videoBitRate * 1000);
videoFormat.SetFloat(MediaFormat.KeyFrameRate, rateNumer / (float)rateDenom);
videoFormat.SetInteger(MediaFormat.KeyIFrameInterval, 4);
videoFormat.SetInteger(MediaFormat.KeyProfile, (int)MediaCodecProfileType.Avcprofilehigh);
videoFormat.SetInteger(MediaFormat.KeyLevel, (int)MediaCodecProfileLevel.Avclevel31);
videoEncoder = MediaCodec.CreateEncoderByType(VideoMimeType);
videoEncoder.Configure(videoFormat, null, null, MediaCodecConfigFlags.Encode);
surface = videoEncoder.CreateInputSurface();
videoEncoder.Start();
MediaFormat audioFormat = MediaFormat.CreateAudioFormat(AudioMimeType, 44100, 1);
audioFormat.SetInteger(MediaFormat.KeyAacProfile, (int)MediaCodecProfileType.Aacobjectlc);
audioFormat.SetInteger(MediaFormat.KeyBitRate, audioBitRate * 1000);
audioEncoder = MediaCodec.CreateEncoderByType(AudioMimeType);
audioEncoder.Configure(audioFormat, null, null, MediaCodecConfigFlags.Encode);
audioEncoder.Start();
try
{
muxer = new MediaMuxer(outputFile, MuxerOutputType.Mpeg4);
}
catch
{
return(false);
}
videoTrackIndex = -1;
audioTrackIndex = -1;
muxerStarted = false;
if (!ElgInitialize())
{
return(false);
}
audioData = File.ReadAllBytes(audioFile);
if (audioData == null)
{
return(false);
}
DrainEncoder(videoEncoder, videoBufferInfo, videoTrackIndex, false);
DrainEncoder(audioEncoder, audioBufferInfo, audioTrackIndex, false);
audioEncodingTask = Task.Factory.StartNew(AudioEncodeThread, TaskCreationOptions.LongRunning);
return(true);
}