安卓摄像头视频压缩和推流

private NV21Convertor mConvertor;
private MediaCodec mMediaCodec;
private byte[] mPpsSps = new byte[0];
private Camera.CameraInfo cameraInfo;

                ByteBuffer[] inputBuffers = mMediaCodec.getInputBuffers();
                ByteBuffer[] outputBuffers = mMediaCodec.getOutputBuffers();
                byte[] dst = new byte[data.length];
                Camera.Size previewSize = m_camera.getParameters().getPreviewSize();
                if (cameraInfo.facing == 0) {
                    dst = Util.rotateNV21Degree90(data, previewSize.width, previewSize.height);
                } else {
                    dst = data;
                }
                try {
                    int bufferIndex = mMediaCodec.dequeueInputBuffer(5000000);
                    if (bufferIndex >= 0) {
                        inputBuffers[bufferIndex].clear();
                        mConvertor.convert(dst, inputBuffers[bufferIndex]);
                        mMediaCodec.queueInputBuffer(bufferIndex, 0,
                                inputBuffers[bufferIndex].position(),
                                System.nanoTime() / 1000, 0);
                        MediaCodec.BufferInfo bufferInfo = new MediaCodec.BufferInfo();
                        int outputBufferIndex = mMediaCodec.dequeueOutputBuffer(bufferInfo, 0);
                        while (outputBufferIndex >= 0) {
                            ByteBuffer outputBuffer = outputBuffers[outputBufferIndex];
                            byte[] outData = new byte[bufferInfo.size];
                            outputBuffer.get(outData);
                            //记录pps和sps
                            if (outData[0] == 0 && outData[1] == 0 && outData[2] == 0 && outData[3] == 1 && outData[4] == 103) {
                                mPpsSps = outData;
                            } else if (outData[0] == 0 && outData[1] == 0 && outData[2] == 0 && outData[3] == 1 && outData[4] == 101) {
                                //在关键帧前面加上pps和sps数据
                                byte[] iframeData = new byte[mPpsSps.length + outData.length];
                                System.arraycopy(mPpsSps, 0, iframeData, 0, mPpsSps.length);
                                System.arraycopy(outData, 0, iframeData, mPpsSps.length, outData.length);
                                outData = iframeData;
                            }
                            //发送实时流
                            mRtpSenderWrapper.sendAvcPacket(outData, 0, outData.length, 0);
//                    Util.save(outData, 0, outData.length, path, true);
                            mMediaCodec.releaseOutputBuffer(outputBufferIndex, false);
                            outputBufferIndex = mMediaCodec.dequeueOutputBuffer(bufferInfo, 0);
                        }
                    } else {
                        Log.e("easypusher", "No buffer available !");
                    }
                } catch (Exception e) {
                    StringWriter sw = new StringWriter();
                    PrintWriter pw = new PrintWriter(sw);
                    e.printStackTrace(pw);
                    String stack = sw.toString();
                    Log.e("save_log", stack);
                    e.printStackTrace();
                } finally {
                }

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