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/*
* 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.model;
import com.android.ide.eclipse.gltrace.GLProtoBuf.GLMessage;
import com.android.ide.eclipse.gltrace.ProtoBufUtils;
import com.android.ide.eclipse.gltrace.TraceFileInfo;
import com.android.ide.eclipse.gltrace.TraceFileReader;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.widgets.Display;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.RandomAccessFile;
import java.util.Collections;
import java.util.List;
/** GLTrace is the in memory model of a OpenGL trace file. */
public class GLTrace {
private static final TraceFileReader sTraceFileReader = new TraceFileReader();
/** Information regarding the trace file. */
private final TraceFileInfo mTraceFileInfo;
/** List of frames in the trace. */
private final List<GLFrame> mGLFrames;
/** List of GL Calls comprising the trace. */
private final List<GLCall> mGLCalls;
/** List of context ids used by the application. */
private List<Integer> mContextIds;
public GLTrace(TraceFileInfo traceFileInfo, List<GLFrame> glFrames, List<GLCall> glCalls,
List<Integer> contextIds) {
mTraceFileInfo = traceFileInfo;
mGLFrames = glFrames;
mGLCalls = glCalls;
mContextIds = contextIds;
}
public List<GLFrame> getFrames() {
return mGLFrames;
}
public GLFrame getFrame(int i) {
return mGLFrames.get(i);
}
public List<GLCall> getGLCalls() {
return mGLCalls;
}
public List<GLCall> getGLCallsForFrame(int frameIndex) {
if (frameIndex >= mGLFrames.size()) {
return Collections.emptyList();
}
GLFrame frame = mGLFrames.get(frameIndex);
return mGLCalls.subList(frame.getStartIndex(), frame.getEndIndex());
}
public Image getImage(GLCall c) {
if (!c.hasFb()) {
return null;
}
if (isTraceFileModified()) {
return null;
}
RandomAccessFile file;
try {
file = new RandomAccessFile(mTraceFileInfo.getPath(), "r"); //$NON-NLS-1$
} catch (FileNotFoundException e1) {
return null;
}
GLMessage m = null;
try {
m = sTraceFileReader.getMessageAtOffset(file, c.getOffsetInTraceFile());
} catch (Exception e) {
return null;
} finally {
try {
file.close();
} catch (IOException e) {
// ignore exception while closing file
}
}
return ProtoBufUtils.getImage(Display.getCurrent(), m);
}
private boolean isTraceFileModified() {
File f = new File(mTraceFileInfo.getPath());
return f.length() != mTraceFileInfo.getSize()
|| f.lastModified() != mTraceFileInfo.getLastModificationTime();
}
public List<Integer> getContexts() {
return mContextIds;
}
}
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