1 /*
2  * Copyright (C) 2011 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.android.ide.eclipse.gltrace.model;
18 
19 import com.android.ide.eclipse.gltrace.GLProtoBuf.GLMessage;
20 import com.android.ide.eclipse.gltrace.ProtoBufUtils;
21 import com.android.ide.eclipse.gltrace.TraceFileInfo;
22 import com.android.ide.eclipse.gltrace.TraceFileReader;
23 
24 import org.eclipse.swt.graphics.Image;
25 import org.eclipse.swt.widgets.Display;
26 
27 import java.io.File;
28 import java.io.FileNotFoundException;
29 import java.io.IOException;
30 import java.io.RandomAccessFile;
31 import java.util.Collections;
32 import java.util.List;
33 
34 /** GLTrace is the in memory model of a OpenGL trace file. */
35 public class GLTrace {
36     private static final TraceFileReader sTraceFileReader = new TraceFileReader();
37 
38     /** Information regarding the trace file. */
39     private final TraceFileInfo mTraceFileInfo;
40 
41     /** List of frames in the trace. */
42     private final List<GLFrame> mGLFrames;
43 
44     /** List of GL Calls comprising the trace. */
45     private final List<GLCall> mGLCalls;
46 
47     /** List of context ids used by the application. */
48     private List<Integer> mContextIds;
49 
GLTrace(TraceFileInfo traceFileInfo, List<GLFrame> glFrames, List<GLCall> glCalls, List<Integer> contextIds)50     public GLTrace(TraceFileInfo traceFileInfo, List<GLFrame> glFrames, List<GLCall> glCalls,
51             List<Integer> contextIds) {
52         mTraceFileInfo = traceFileInfo;
53         mGLFrames = glFrames;
54         mGLCalls = glCalls;
55         mContextIds = contextIds;
56     }
57 
getFrames()58     public List<GLFrame> getFrames() {
59         return mGLFrames;
60     }
61 
getFrame(int i)62     public GLFrame getFrame(int i) {
63         return mGLFrames.get(i);
64     }
65 
getGLCalls()66     public List<GLCall> getGLCalls() {
67         return mGLCalls;
68     }
69 
getGLCallsForFrame(int frameIndex)70     public List<GLCall> getGLCallsForFrame(int frameIndex) {
71         if (frameIndex >= mGLFrames.size()) {
72             return Collections.emptyList();
73         }
74 
75         GLFrame frame = mGLFrames.get(frameIndex);
76         return mGLCalls.subList(frame.getStartIndex(), frame.getEndIndex());
77     }
78 
getImage(GLCall c)79     public Image getImage(GLCall c) {
80         if (!c.hasFb()) {
81             return null;
82         }
83 
84         if (isTraceFileModified()) {
85             return null;
86         }
87 
88         RandomAccessFile file;
89         try {
90             file = new RandomAccessFile(mTraceFileInfo.getPath(), "r"); //$NON-NLS-1$
91         } catch (FileNotFoundException e1) {
92             return null;
93         }
94 
95         GLMessage m = null;
96         try {
97             m = sTraceFileReader.getMessageAtOffset(file, c.getOffsetInTraceFile());
98         } catch (Exception e) {
99             return null;
100         } finally {
101             try {
102                 file.close();
103             } catch (IOException e) {
104                 // ignore exception while closing file
105             }
106         }
107 
108         return ProtoBufUtils.getImage(Display.getCurrent(), m);
109     }
110 
isTraceFileModified()111     private boolean isTraceFileModified() {
112         File f = new File(mTraceFileInfo.getPath());
113         return f.length() != mTraceFileInfo.getSize()
114                 || f.lastModified() != mTraceFileInfo.getLastModificationTime();
115     }
116 
getContexts()117     public List<Integer> getContexts() {
118         return mContextIds;
119     }
120 }
121