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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;
import java.io.DataOutputStream;
import java.io.IOException;
/**
* Write trace control options to the trace backend.
* Currently, the number of options is limited, so all the options are packed into a
* single integer. Any changes to this protocol have to be updated on the device as well.
*/
public class TraceCommandWriter {
private static final int CMD_SIZE = 4;
private static final int READ_FB_ON_EGLSWAP_BIT = 0;
private static final int READ_FB_ON_GLDRAW_BIT = 1;
private static final int READ_TEXTURE_DATA_ON_GLTEXIMAGE_BIT = 2;
private final DataOutputStream mStream;;
public TraceCommandWriter(DataOutputStream traceCommandStream) {
mStream = traceCommandStream;
}
public void setTraceOptions(boolean readFbOnEglSwap, boolean readFbOnGlDraw,
boolean readTextureOnGlTexImage) throws IOException {
int eglSwap = readFbOnEglSwap ? (1 << READ_FB_ON_EGLSWAP_BIT) : 0;
int glDraw = readFbOnGlDraw ? (1 << READ_FB_ON_GLDRAW_BIT) : 0;
int tex = readTextureOnGlTexImage ? ( 1 << READ_TEXTURE_DATA_ON_GLTEXIMAGE_BIT) : 0;
int cmd = eglSwap | glDraw | tex;
mStream.writeInt(CMD_SIZE);
mStream.writeInt(cmd);
mStream.flush();
}
public void close() {
try {
mStream.close();
} catch (IOException e) {
// ignore exception while closing stream
}
}
}
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