/*

 * Copyright (c) 2011, 2012, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

#import "QuartzSurfaceData.h"

#import <pthread.h>

typedef UInt8 Pixel8bit;

typedef UInt16 Pixel16bit;

typedef UInt32 Pixel32bit;

typedef struct _ImageSDOps ImageSDOps;

ImageSDOps*    LockImage(JNIEnv* env, jobject imageSurfaceData);

void        UnlockImage(JNIEnv* env, ImageSDOps* isdo);

ImageSDOps*    LockImagePixels(JNIEnv* env, jobject imageSurfaceData);

void        UnlockImagePixels(JNIEnv* env, ImageSDOps* isdo);

// if there is no image created for isdo.imgRef, it creates and image using the isdo.dataProvider

// If there is an image present, this is a no-op

void makeSureImageIsCreated(ImageSDOps* isdo);

typedef struct _ContextInfo

{

    BOOL                useWindowContextReference;

    BOOL                canUseJavaPixelsAsContext;

    size_t                bitsPerComponent;

    size_t                bytesPerPixel;

    size_t                bytesPerRow;

    CGImageAlphaInfo    alphaInfo;

    CGColorSpaceRef        colorSpace;

} ContextInfo;

typedef struct _ImageInfo

{

    size_t                bitsPerComponent;

    size_t                bitsPerPixel;

    size_t                bytesPerPixel;

    size_t                bytesPerRow;

    CGImageAlphaInfo    alphaInfo;

    CGColorSpaceRef        colorSpace;

} ImageInfo;

struct _ImageSDOps

{

    QuartzSDOps                qsdo; // must be the first entry!

    ContextInfo                contextInfo;

    ImageInfo                imageInfo;

    BOOL                    isSubImage;

    jint*                    javaImageInfo;

    // parameters specifying this BufferedImage given to us from Java

    jobject                    array;

    jint                    offset;

    jint                    width;

    jint                    height;

    jint                    javaPixelBytes;

    jint                    javaPixelsBytesPerRow;

    jobject                    icm;

    jint                    type;

    Pixel8bit*                pixels;

    Pixel8bit*                pixelsLocked;

    // needed by TYPE_BYTE_INDEXED

    UInt16*                    indexedColorTable;

    UInt32*                    lutData;

    UInt32                    lutDataSize;

    // Used as a cached image ref created from the isdo.dataprovider. This is only a chached image, and it might become invalid

    // if somebody draws on the bitmap context, or the pixels are changed in java. In that case, we need to NULL out

    // this image and recreate it from the data provider.

    CGImageRef                imgRef;

    // Cached instance of CGDataProvider. dataProvider is alloced the first time a bitmap context is created, providing the

    // native pixels as a source of the data. The dataProviders life cycle is the same as ISDO. The reference gets

    // released when we are done with the ISDO.

    CGDataProviderRef        dataProvider;

    // Pointer in memory that is used for create the CGBitmapContext and the CGDataProvider (used for imgRef). This is a native

    // copy of the pixels for the Image. There is a spearate copy of the pixels that lives in Java heap. There are two main

    // reasons why we keep those pixels spearate: 1) CG doesn't support all the Java pixel formats 2) The Garbage collector can

    // move the java pixels at any time. There are possible workarounds for both problems. Number 2) seems to be a more serious issue, since

    // we can solve 1) by only supporting certain image types.

    void *                    nativePixels;

    NSGraphicsContext*        nsRef;

    pthread_mutex_t            lock;

    jint                    nrOfPixelsOwners;

};