Mattia Iavarone
6 years ago
parent
439e49d513
commit
cfc46afaf2
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package com.otaliastudios.cameraview; |
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import android.media.MediaMuxer; |
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import android.os.Build; |
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import android.support.annotation.NonNull; |
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import android.support.annotation.RequiresApi; |
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@RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN_MR2) |
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class AudioMediaEncoder extends MediaEncoder { |
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static class Config { |
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Config() { } |
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} |
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AudioMediaEncoder(@NonNull Config config) { |
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} |
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@Override |
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void prepare(MediaMuxer muxer) { |
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super.prepare(muxer); |
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} |
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@Override |
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void start() { |
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} |
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@Override |
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void notify(String event, Object data) { |
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} |
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@Override |
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void stop() { |
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} |
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@Override |
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void release() { |
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} |
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} |
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package com.otaliastudios.cameraview; |
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import android.media.MediaCodec; |
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import android.media.MediaFormat; |
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import android.media.MediaMuxer; |
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import android.os.Build; |
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import android.support.annotation.RequiresApi; |
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import android.util.Log; |
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import java.nio.ByteBuffer; |
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// https://github.com/saki4510t/AudioVideoRecordingSample/blob/master/app/src/main/java/com/serenegiant/encoder/MediaEncoder.java
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@RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN_MR2) |
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abstract class MediaEncoder { |
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private final static int TIMEOUT_USEC = 10000; // 10 msec
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protected MediaCodec mMediaCodec; |
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private MediaCodec.BufferInfo mBufferInfo; |
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private MediaMuxer mMuxer; |
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private int mTrackIndex; |
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private boolean mTrackStarted; |
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MediaEncoder() { |
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} |
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void prepare(MediaMuxer muxer) { |
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mMuxer = muxer; |
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mBufferInfo = new MediaCodec.BufferInfo(); |
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} |
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abstract void start(); |
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abstract void notify(String event, Object data); |
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abstract void stop(); |
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abstract void release(); |
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/** |
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* Extracts all pending data from the encoder and forwards it to the muxer. |
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* <p> |
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* If endOfStream is not set, this returns when there is no more data to drain. If it |
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* is set, we send EOS to the encoder, and then iterate until we see EOS on the output. |
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* Calling this with endOfStream set should be done once, right before stopping the muxer. |
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* <p> |
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* We're just using the muxer to get a .mp4 file (instead of a raw H.264 stream). We're |
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* not recording audio. |
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*/ |
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protected void drain(boolean endOfStream) { |
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if (endOfStream) { |
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mMediaCodec.signalEndOfInputStream(); |
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} |
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ByteBuffer[] encoderOutputBuffers = mMediaCodec.getOutputBuffers(); |
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while (true) { |
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int encoderStatus = mMediaCodec.dequeueOutputBuffer(mBufferInfo, TIMEOUT_USEC); |
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if (encoderStatus == MediaCodec.INFO_TRY_AGAIN_LATER) { |
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// no output available yet
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if (!endOfStream) { |
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break; // out of while
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} |
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} else if (encoderStatus == MediaCodec.INFO_OUTPUT_BUFFERS_CHANGED) { |
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// not expected for an encoder
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encoderOutputBuffers = mMediaCodec.getOutputBuffers(); |
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} else if (encoderStatus == MediaCodec.INFO_OUTPUT_FORMAT_CHANGED) { |
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// should happen before receiving buffers, and should only happen once
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if (mTrackStarted) { |
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throw new RuntimeException("format changed twice"); |
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} |
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MediaFormat newFormat = mMediaCodec.getOutputFormat(); |
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// now that we have the Magic Goodies, start the muxer
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mTrackIndex = mMuxer.addTrack(newFormat); |
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// TODO this is wrong. Look at the Github project: it is a muxer wrapper.
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// If you have multiple encoders this breaks.
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mMuxer.start(); |
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mTrackStarted = true; |
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} else if (encoderStatus < 0) { |
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Log.w("VideoMediaEncoder", "unexpected result from encoder.dequeueOutputBuffer: " + encoderStatus); |
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// let's ignore it
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} else { |
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ByteBuffer encodedData = encoderOutputBuffers[encoderStatus]; |
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if (encodedData == null) { |
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throw new RuntimeException("encoderOutputBuffer " + encoderStatus + " was null"); |
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} |
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if ((mBufferInfo.flags & MediaCodec.BUFFER_FLAG_CODEC_CONFIG) != 0) { |
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// The codec config data was pulled out and fed to the muxer when we got
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// the INFO_OUTPUT_FORMAT_CHANGED status. Ignore it.
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mBufferInfo.size = 0; |
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} |
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if (mBufferInfo.size != 0) { |
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if (!mTrackStarted) { |
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throw new RuntimeException("muxer hasn't started"); |
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} |
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// adjust the ByteBuffer values to match BufferInfo (not needed?)
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encodedData.position(mBufferInfo.offset); |
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encodedData.limit(mBufferInfo.offset + mBufferInfo.size); |
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mMuxer.writeSampleData(mTrackIndex, encodedData, mBufferInfo); |
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} |
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mMediaCodec.releaseOutputBuffer(encoderStatus, false); |
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if ((mBufferInfo.flags & MediaCodec.BUFFER_FLAG_END_OF_STREAM) != 0) { |
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if (!endOfStream) { |
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Log.w("VideoMediaEncoder", "reached end of stream unexpectedly"); |
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} |
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break; // out of while
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} |
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} |
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} |
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} |
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} |
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@ -0,0 +1,87 @@ |
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package com.otaliastudios.cameraview; |
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import android.graphics.SurfaceTexture; |
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import android.media.MediaMuxer; |
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import android.os.Build; |
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import android.support.annotation.NonNull; |
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import android.support.annotation.Nullable; |
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import android.support.annotation.RequiresApi; |
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import java.io.File; |
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import java.io.IOException; |
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import java.util.ArrayList; |
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import java.util.List; |
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@RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN_MR2) |
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class MediaEncoderEngine { |
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private WorkerHandler mWorker; |
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private ArrayList<MediaEncoder> mEncoders; |
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private MediaMuxer mMediaMuxer; |
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MediaEncoderEngine(@NonNull File file, @NonNull VideoMediaEncoder videoEncoder, @Nullable AudioMediaEncoder audioEncoder) { |
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mWorker = WorkerHandler.get("EncoderEngine"); |
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mEncoders = new ArrayList<>(); |
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mEncoders.add(videoEncoder); |
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if (audioEncoder != null) { |
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mEncoders.add(audioEncoder); |
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} |
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try { |
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mMediaMuxer = new MediaMuxer(file.toString(), MediaMuxer.OutputFormat.MUXER_OUTPUT_MPEG_4); |
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} catch (IOException e) { |
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throw new RuntimeException(e); |
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} |
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mWorker.post(new Runnable() { |
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@Override |
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public void run() { |
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for (MediaEncoder encoder : mEncoders) { |
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encoder.prepare(mMediaMuxer); |
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} |
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} |
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}); |
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} |
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void start() { |
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mWorker.post(new Runnable() { |
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@Override |
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public void run() { |
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for (MediaEncoder encoder : mEncoders) { |
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encoder.start(); |
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} |
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} |
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}); |
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} |
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void notify(final String event, final Object data) { |
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mWorker.post(new Runnable() { |
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@Override |
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public void run() { |
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for (MediaEncoder encoder : mEncoders) { |
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encoder.notify(event, data); |
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} |
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} |
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}); |
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} |
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void stop(final Runnable onStop) { |
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mWorker.post(new Runnable() { |
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@Override |
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public void run() { |
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for (MediaEncoder encoder : mEncoders) { |
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encoder.stop(); |
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} |
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onStop.run(); |
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for (MediaEncoder encoder : mEncoders) { |
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encoder.release(); |
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} |
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if (mMediaMuxer != null) { |
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// TODO: stop() throws an exception if you haven't fed it any data. Keep track
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// of frames submitted, and don't call stop() if we haven't written anything.
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mMediaMuxer.stop(); |
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mMediaMuxer.release(); |
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mMediaMuxer = null; |
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} |
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} |
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}); |
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} |
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} |
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@ -0,0 +1,127 @@ |
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package com.otaliastudios.cameraview; |
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import android.graphics.SurfaceTexture; |
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import android.media.MediaCodec; |
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import android.media.MediaCodecInfo; |
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import android.media.MediaFormat; |
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import android.media.MediaMuxer; |
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import android.opengl.EGLContext; |
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import android.opengl.Matrix; |
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import android.os.Build; |
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import android.support.annotation.NonNull; |
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import android.support.annotation.RequiresApi; |
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import android.util.Log; |
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import android.view.Surface; |
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import java.io.IOException; |
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@RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN_MR2) |
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class TextureMediaEncoder extends VideoMediaEncoder<TextureMediaEncoder.Config> { |
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public final static String FRAME_EVENT = "frame"; |
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static class Frame { |
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float[] transform; |
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long timestamp; |
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} |
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static class Config extends VideoMediaEncoder.Config { |
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int textureId; |
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float scaleX; |
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float scaleY; |
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EGLContext eglContext; |
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Config(int width, int height, int bitRate, int frameRate, int rotation, String mimeType, |
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int textureId, float scaleX, float scaleY, EGLContext eglContext) { |
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super(width, height, bitRate, frameRate, rotation, mimeType); |
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this.textureId = textureId; |
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this.scaleX = scaleX; |
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this.scaleY = scaleY; |
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this.eglContext = eglContext; |
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} |
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} |
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private EglCore mEglCore; |
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private EglWindowSurface mWindow; |
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private EglViewport mViewport; |
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public TextureMediaEncoder(@NonNull Config config) { |
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super(config); |
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} |
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@Override |
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void prepare(MediaMuxer muxer) { |
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super.prepare(muxer); |
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mEglCore = new EglCore(mConfig.eglContext, EglCore.FLAG_RECORDABLE); |
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mWindow = new EglWindowSurface(mEglCore, mSurface, true); |
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mWindow.makeCurrent(); // drawing will happen on the InputWindowSurface, which
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// is backed by mVideoEncoder.getInputSurface()
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mViewport = new EglViewport(); |
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} |
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@Override |
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void release() { |
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super.release(); |
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if (mWindow != null) { |
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mWindow.release(); |
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mWindow = null; |
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} |
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if (mViewport != null) { |
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mViewport.release(true); |
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mViewport = null; |
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} |
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if (mEglCore != null) { |
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mEglCore.release(); |
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mEglCore = null; |
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} |
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} |
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@Override |
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void start() { |
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super.start(); |
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// Nothing to do here. Waiting for the first frame.
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} |
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@Override |
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void notify(String event, Object data) { |
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if (event.equals(FRAME_EVENT)) { |
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Frame frame = (Frame) data; |
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// Seeing this after device is toggled off/on with power button. The
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// first frame back has a zero timestamp.
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// MPEG4Writer thinks this is cause to abort() in native code, so it's very
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// important that we just ignore the frame.
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if (frame.timestamp == 0) return; |
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if (mFrameNum < 0) return; |
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mFrameNum++; |
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int arg1 = (int) (frame.timestamp >> 32); |
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int arg2 = (int) frame.timestamp; |
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long timestamp = (((long) arg1) << 32) | (((long) arg2) & 0xffffffffL); |
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float[] transform = frame.transform; |
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// We must scale this matrix like GLCameraPreview does, because it might have some cropping.
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// Scaling takes place with respect to the (0, 0, 0) point, so we must apply a Translation to compensate.
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float scaleX = mConfig.scaleX; |
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float scaleY = mConfig.scaleY; |
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float scaleTranslX = (1F - scaleX) / 2F; |
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float scaleTranslY = (1F - scaleY) / 2F; |
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Matrix.translateM(transform, 0, scaleTranslX, scaleTranslY, 0); |
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Matrix.scaleM(transform, 0, scaleX, scaleY, 1); |
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// We also must rotate this matrix. In GLCameraPreview it is not needed because it is a live
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// stream, but the output video, must be correctly rotated based on the device rotation at the moment.
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// Rotation also takes place with respect to the origin (the Z axis), so we must
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// translate to origin, rotate, then back to where we were.
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Matrix.translateM(transform, 0, 0.5F, 0.5F, 0); |
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Matrix.rotateM(transform, 0, mConfig.rotation, 0, 0, 1); |
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Matrix.translateM(transform, 0, -0.5F, -0.5F, 0); |
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drain(false); |
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mViewport.drawFrame(mConfig.textureId, transform); |
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mWindow.setPresentationTime(timestamp); |
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mWindow.swapBuffers(); |
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} |
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} |
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} |
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@ -0,0 +1,90 @@ |
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package com.otaliastudios.cameraview; |
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import android.media.MediaCodec; |
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import android.media.MediaCodecInfo; |
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import android.media.MediaFormat; |
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import android.media.MediaMuxer; |
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import android.os.Build; |
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import android.support.annotation.NonNull; |
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import android.support.annotation.RequiresApi; |
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import android.util.Log; |
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import android.view.Surface; |
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import java.io.IOException; |
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import java.nio.ByteBuffer; |
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@RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN_MR2) |
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abstract class VideoMediaEncoder<C extends VideoMediaEncoder.Config> extends MediaEncoder { |
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protected C mConfig; |
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protected Surface mSurface; |
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protected int mFrameNum = -1; |
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static class Config { |
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int width; |
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int height; |
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int bitRate; |
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int frameRate; |
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int rotation; |
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String mimeType; |
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Config(int width, int height, int bitRate, int frameRate, int rotation, String mimeType) { |
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this.width = width; |
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this.height = height; |
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this.bitRate = bitRate; |
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this.frameRate = frameRate; |
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this.rotation = rotation; |
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this.mimeType = mimeType; |
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} |
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} |
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VideoMediaEncoder(@NonNull C config) { |
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mConfig = config; |
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} |
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@Override |
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void prepare(MediaMuxer muxer) { |
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super.prepare(muxer); |
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MediaFormat format = MediaFormat.createVideoFormat(mConfig.mimeType, mConfig.width, mConfig.height); |
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// Set some properties. Failing to specify some of these can cause the MediaCodec
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// configure() call to throw an unhelpful exception.
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format.setInteger(MediaFormat.KEY_COLOR_FORMAT, MediaCodecInfo.CodecCapabilities.COLOR_FormatSurface); |
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format.setInteger(MediaFormat.KEY_BIT_RATE, mConfig.bitRate); |
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format.setInteger(MediaFormat.KEY_FRAME_RATE, mConfig.frameRate); |
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format.setInteger(MediaFormat.KEY_I_FRAME_INTERVAL, 5); |
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format.setInteger("rotation-degrees", mConfig.rotation); |
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// Create a MediaCodec encoder, and configure it with our format. Get a Surface
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// we can use for input and wrap it with a class that handles the EGL work.
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try { |
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mMediaCodec = MediaCodec.createEncoderByType(mConfig.mimeType); |
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} catch (IOException e) { |
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throw new RuntimeException(e); |
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} |
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mMediaCodec.configure(format, null, null, MediaCodec.CONFIGURE_FLAG_ENCODE); |
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mSurface = mMediaCodec.createInputSurface(); |
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mMediaCodec.start(); |
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} |
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@Override |
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void start() { |
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// Nothing to do here. Waiting for the first frame.
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mFrameNum = 0; |
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} |
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@Override |
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void stop() { |
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mFrameNum = -1; |
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drain(true); |
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} |
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@Override |
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void release() { |
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if (mMediaCodec != null) { |
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mMediaCodec.stop(); |
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mMediaCodec.release(); |
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mMediaCodec = null; |
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} |
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} |
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} |
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