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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.format;
import com.android.ide.eclipse.gltrace.GLEnum;
import com.android.ide.eclipse.gltrace.GLProtoBuf.GLMessage;
import com.android.ide.eclipse.gltrace.GLProtoBuf.GLMessage.DataType;
import com.android.ide.eclipse.gltrace.GLProtoBuf.GLMessage.DataType.Type;
import java.util.List;
import java.util.Map;
/**
* GLMessageFormatter is used to format and create a string representation for a {@link GLMessage}.
* It is provided with a specification for all GL Functions. Using this information, each
* GLMessage is parsed and formatted appropriately for display.
*/
public class GLMessageFormatter {
private static final String GL_NO_ERROR = "GL_NO_ERROR";
private Map<String, GLAPISpec> mAPISpecs;
private enum DataTypeContext { CONTEXT_ARGUMENT, CONTEXT_RETURNVALUE };
public GLMessageFormatter(Map<String, GLAPISpec> specs) {
mAPISpecs = specs;
}
public String formatGLMessage(GLMessage glMessage) {
GLAPISpec apiSpec = mAPISpecs.get(glMessage.getFunction().toString());
if (apiSpec == null) {
return glMessage.getFunction().toString();
}
return formatCall(apiSpec, glMessage) + formatReturnValue(apiSpec, glMessage);
}
private String formatReturnValue(GLAPISpec apiSpec, GLMessage glMessage) {
if (apiSpec.getReturnValue().getDataType() == Type.VOID) {
return "";
}
GLDataTypeSpec returnSpec = apiSpec.getReturnValue();
return String.format(" = (%s) %s", returnSpec.getCType(), //$NON-NLS-1$
formatDataValue(glMessage.getReturnValue(),
returnSpec,
DataTypeContext.CONTEXT_RETURNVALUE));
}
private String formatCall(GLAPISpec apiSpec, GLMessage glMessage) {
return String.format("%s(%s)", apiSpec.getFunction(), //$NON-NLS-1$
formatArgs(glMessage, apiSpec.getArgs()));
}
private String formatArgs(GLMessage glMessage, List<GLDataTypeSpec> argSpecs) {
int sizeEstimate = 10 + argSpecs.size() * 5;
StringBuilder sb = new StringBuilder(sizeEstimate);
for (int i = 0; i < argSpecs.size(); i++) {
GLDataTypeSpec argSpec = argSpecs.get(i);
if (argSpec.getDataType() == Type.VOID && !argSpec.isPointer()) {
sb.append("void"); //$NON-NLS-1$
} else {
sb.append(argSpec.getArgName());
sb.append(" = "); //$NON-NLS-1$
sb.append(formatDataValue(glMessage.getArgs(i),
argSpec,
DataTypeContext.CONTEXT_ARGUMENT));
}
if (i < argSpecs.size() - 1) {
sb.append(", "); //$NON-NLS-1$
}
}
return sb.toString();
}
private String formatDataValue(DataType var, GLDataTypeSpec typeSpec, DataTypeContext context) {
if (typeSpec.isPointer()) {
return formatPointer(var, typeSpec.getDataType());
}
switch (typeSpec.getDataType()) {
case VOID:
return "";
case BOOL:
return Boolean.toString(var.getBoolValue(0));
case FLOAT:
return String.format("%f", var.getFloatValue(0)); //$NON-NLS-1$
case INT:
return Integer.toString(var.getIntValue(0));
case ENUM:
if (var.getIntValue(0) == 0 && context == DataTypeContext.CONTEXT_RETURNVALUE) {
return GL_NO_ERROR;
} else {
return GLEnum.valueOf(var.getIntValue(0)).toString();
}
default:
return "(unknown type)"; //$NON-NLS-1$
}
}
private String formatPointer(DataType var, Type typeSpec) {
if (var.getType() != typeSpec && !isEnumTypeWithIntData(var, typeSpec)) {
// the type of the data in the message does not match expected specification.
// in such a case, just print the data as a pointer and don't try to interpret it.
if (var.getIntValueCount() > 0) {
return String.format("0x%x", var.getIntValue(0)); //$NON-NLS-1$
} else {
return "0x??"; //$NON-NLS-1$
}
}
// Display as array if possible
switch (typeSpec) {
case BOOL:
return var.getBoolValueList().toString();
case FLOAT:
return var.getFloatValueList().toString();
case INT:
return var.getIntValueList().toString();
case CHAR:
return var.getCharValueList().get(0).toStringUtf8();
case ENUM:
List<Integer> vals = var.getIntValueList();
StringBuilder sb = new StringBuilder(vals.size() * 5);
sb.append('[');
for (Integer v: vals) {
sb.append(GLEnum.valueOf(v.intValue()));
}
sb.append(']');
return sb.toString();
case VOID:
if (var.getRawBytesList().size() > 0) {
return String.format("[ %d bytes ]", var.getRawBytesList().get(0).size()); //$NON-NLS-1$
}
return "[]"; //$NON-NLS-1$
}
// We have a pointer, but we don't have the data pointed to.
// Just format and return the pointer (points to device memory)
if (var.getIntValue(0) == 0) {
return "NULL"; //$NON-NLS-1$
} else {
return String.format("0x%x", var.getIntValue(0)); //$NON-NLS-1$
}
}
private boolean isEnumTypeWithIntData(DataType var, Type typeSpec) {
return var.getType() == Type.INT && typeSpec == Type.ENUM;
}
}
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