/*
 * 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;
import com.android.ide.eclipse.gltrace.GLProtoBuf.GLMessage.Function;
import com.android.ide.eclipse.gltrace.state.transforms.IStateTransform;
import com.android.utils.SparseArray;

import java.util.Collections;
import java.util.List;

/**
 * A GLCall is the in memory representation of a single {@link GLProtoBuf.GLMessage}.
 *
 * Some protocol buffer messages have a large amount of image data packed in them. Rather
 * than storing all of that in memory, the GLCall stores a thumbnail image, and an offset
 * into the trace file corresponding to original protocol buffer message. If full image data
 * is required, the protocol buffer message can be recreated by reading the trace at the
 * specified offset.
 */
public class GLCall {
    /** Marker name provided by a {@link Function#glPushGroupMarkerEXT} call. */
    public static final int PROPERTY_MARKERNAME = 0;

    /** Size argument in a {@link Function#glVertexAttribPointerData} call. */
    public static final int PROPERTY_VERTEX_ATTRIB_POINTER_SIZE = 1;

    /** Type argument in a {@link Function#glVertexAttribPointerData} call. */
    public static final int PROPERTY_VERTEX_ATTRIB_POINTER_TYPE = 2;

    /** Data argument in a {@link Function#glVertexAttribPointerData} call. */
    public static final int PROPERTY_VERTEX_ATTRIB_POINTER_DATA = 3;

    /** Index of this call in the trace. */
    private int mIndex;

    /** Time on device when this call was invoked. */
    private final long mStartTime;

    /** Offset of the protobuf message corresponding to this call in the trace file. */
    private final long mTraceFileOffset;

    /** Flag indicating whether the original protobuf message included FB data. */
    private final boolean mHasFb;

    /** Full string representation of this call. */
    private final String mDisplayString;

    /** The actual GL Function called. */
    private final Function mFunction;

    /** GL Context identifier corresponding to the context of this call. */
    private final int mContextId;

    /** Duration of this call (MONOTONIC/wall clock time). */
    private final int mWallDuration;

    /** Duration of this call (THREAD time). */
    private final int mThreadDuration;

    /** List of state transformations performed by this call. */
    private List<IStateTransform> mStateTransforms = Collections.emptyList();

    /** Error conditions while creating state transforms for this call. */
    private String mStateTransformationCreationErrorMessage;

    /** List of properties associated to this call. */
    private SparseArray<Object> mProperties;

    public GLCall(int index, long startTime, long traceFileOffset, String displayString,
            Function function, boolean hasFb, int contextId,
            int wallTime, int threadTime) {
        mIndex = index;
        mStartTime = startTime;
        mTraceFileOffset = traceFileOffset;
        mDisplayString = displayString;
        mFunction = function;
        mHasFb = hasFb;
        mContextId = contextId;
        mWallDuration = wallTime;
        mThreadDuration = threadTime;
    }

    public int getIndex() {
        return mIndex;
    }

    public void setIndex(int i) {
        mIndex = i;
    }

    public long getOffsetInTraceFile() {
        return mTraceFileOffset;
    }

    public Function getFunction() {
        return mFunction;
    }

    public int getContextId() {
        return mContextId;
    }

    public boolean hasFb() {
        return mHasFb;
    }

    public long getStartTime() {
        return mStartTime;
    }

    public int getWallDuration() {
        return mWallDuration;
    }

    public int getThreadDuration() {
        return mThreadDuration;
    }

    public void setStateTransformations(List<IStateTransform> transforms) {
        mStateTransforms = transforms;
    }

    public void setStateTransformationCreationError(String errorMessage) {
        mStateTransformationCreationErrorMessage = errorMessage;
    }

    public boolean hasErrors() {
        return mStateTransformationCreationErrorMessage != null;
    }

    public String getError() {
        return mStateTransformationCreationErrorMessage;
    }

    public List<IStateTransform> getStateTransformations() {
        return mStateTransforms;
    }

    @Override
    public String toString() {
        return mDisplayString;
    }

    /**
     * Associate a certain value to the property name. Property names are defined
     * as constants in {@link GLCall}.
     */
    public void addProperty(int propertyName, Object value) {
        if (mProperties == null) {
            mProperties = new SparseArray<Object>(1);
        }

        mProperties.put(propertyName, value);
    }

    /**
     * Obtain the value for the given property. Returns null if no such property
     * is associated with this {@link GLCall}.
     */
    public Object getProperty(int propertyName) {
        if (mProperties == null) {
            return null;
        }

        return mProperties.get(propertyName);
    }
}