| /* |
| * Copyright (C) 2011 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.ide.eclipse.gltrace; |
| |
| import com.android.ide.eclipse.gltrace.GLProtoBuf.GLMessage; |
| import com.android.ide.eclipse.gltrace.GLProtoBuf.GLMessage.Function; |
| import com.google.protobuf.InvalidProtocolBufferException; |
| |
| import java.io.DataInputStream; |
| import java.io.DataOutputStream; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| |
| /** A class that streams data received from a socket into the trace file. */ |
| public class TraceFileWriter { |
| private DataInputStream mInputStream; |
| private DataOutputStream mOutputStream; |
| private Thread mReceiverThread; |
| |
| private int mFileSize = 0; |
| private int mFrameCount = 0; |
| |
| /** |
| * Construct a trace file writer. |
| * @param fos output stream to write trace data to |
| * @param is input stream from which trace data is read |
| */ |
| public TraceFileWriter(FileOutputStream fos, DataInputStream is) { |
| mOutputStream = new DataOutputStream(fos); |
| mInputStream = is; |
| } |
| |
| public void start() { |
| // launch thread |
| mReceiverThread = new Thread(new GLTraceReceiverTask()); |
| mReceiverThread.setName("GL Trace Receiver"); |
| mReceiverThread.start(); |
| } |
| |
| public void stopTracing() { |
| // close socket to stop the receiver thread |
| try { |
| mInputStream.close(); |
| } catch (IOException e) { |
| // ignore exception while closing socket |
| } |
| |
| // wait for receiver to complete |
| try { |
| mReceiverThread.join(); |
| } catch (InterruptedException e1) { |
| // ignore, this cannot be interrupted |
| } |
| |
| // close stream |
| try { |
| mOutputStream.close(); |
| } catch (IOException e) { |
| // ignore error while closing stream |
| } |
| } |
| |
| /** |
| * The GLTraceReceiverTask collects trace data from the device and writes it |
| * into a file while collecting some stats on the way. |
| */ |
| private class GLTraceReceiverTask implements Runnable { |
| @Override |
| public void run() { |
| while (true) { |
| byte[] buffer = readTraceData(mInputStream); |
| if (buffer == null) { |
| break; |
| } |
| |
| try { |
| writeTraceData(buffer, mOutputStream); |
| } catch (IOException e) { |
| break; |
| } |
| |
| updateTraceStats(buffer); |
| } |
| } |
| } |
| |
| private byte[] readTraceData(DataInputStream dis) { |
| int len; |
| try { |
| len = dis.readInt(); |
| } catch (IOException e1) { |
| return null; |
| } |
| len = Integer.reverseBytes(len); // readInt is big endian, we want little endian |
| |
| byte[] buffer = new byte[len]; |
| int readLen = 0; |
| while (readLen < len) { |
| try { |
| int read = dis.read(buffer, readLen, len - readLen); |
| if (read < 0) { |
| return null; |
| } else { |
| readLen += read; |
| } |
| } catch (IOException e) { |
| return null; |
| } |
| } |
| |
| return buffer; |
| } |
| |
| |
| private void writeTraceData(byte[] buffer, DataOutputStream stream) throws IOException { |
| stream.writeInt(buffer.length); |
| stream.write(buffer); |
| } |
| |
| private void updateTraceStats(byte[] buffer) { |
| GLMessage msg = null; |
| try { |
| msg = GLMessage.parseFrom(buffer); |
| } catch (InvalidProtocolBufferException e) { |
| return; |
| } |
| |
| mFileSize += buffer.length; |
| |
| if (msg.getFunction() == Function.eglSwapBuffers) { |
| mFrameCount++; |
| } |
| } |
| |
| public int getCurrentFileSize() { |
| return mFileSize; |
| } |
| |
| public int getCurrentFrameCount() { |
| return mFrameCount; |
| } |
| } |