1 /*
2 * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 #import "QuartzSurfaceData.h"
27 #import <pthread.h>
28
29 typedef UInt8 Pixel8bit;
30 typedef UInt16 Pixel16bit;
31 typedef UInt32 Pixel32bit;
32
33 typedef struct _ImageSDOps ImageSDOps;
34
35 ImageSDOps* LockImage(JNIEnv* env, jobject imageSurfaceData);
36 void UnlockImage(JNIEnv* env, ImageSDOps* isdo);
37 ImageSDOps* LockImagePixels(JNIEnv* env, jobject imageSurfaceData);
38 void UnlockImagePixels(JNIEnv* env, ImageSDOps* isdo);
39
40 // if there is no image created for isdo.imgRef, it creates and image using the isdo.dataProvider
41 // If there is an image present, this is a no-op
42 void makeSureImageIsCreated(ImageSDOps* isdo);
43
44 typedef struct _ContextInfo
45 {
46 BOOL useWindowContextReference;
47 BOOL canUseJavaPixelsAsContext;
48 size_t bitsPerComponent;
49 size_t bytesPerPixel;
50 size_t bytesPerRow;
51 CGImageAlphaInfo alphaInfo;
52 CGColorSpaceRef colorSpace;
53 } ContextInfo;
54
55 typedef struct _ImageInfo
56 {
57 size_t bitsPerComponent;
58 size_t bitsPerPixel;
59 size_t bytesPerPixel;
60 size_t bytesPerRow;
61 CGImageAlphaInfo alphaInfo;
62 CGColorSpaceRef colorSpace;
63 } ImageInfo;
64
65 struct _ImageSDOps
66 {
67 QuartzSDOps qsdo; // must be the first entry!
68
69 ContextInfo contextInfo;
70 ImageInfo imageInfo;
71 BOOL isSubImage;
72
73 jint* javaImageInfo;
74
75 // parameters specifying this BufferedImage given to us from Java
76 jobject array;
77 jint offset;
78 jint width;
79 jint height;
80 jint javaPixelBytes;
81 jint javaPixelsBytesPerRow;
82 jobject icm;
83 jint type;
84
85 Pixel8bit* pixels;
86 Pixel8bit* pixelsLocked;
87
88 // needed by TYPE_BYTE_INDEXED
89 UInt16* indexedColorTable;
90 UInt32* lutData;
91 UInt32 lutDataSize;
92
93 // Used as a cached image ref created from the isdo.dataprovider. This is only a chached image, and it might become invalid
94 // if somebody draws on the bitmap context, or the pixels are changed in java. In that case, we need to NULL out
95 // this image and recreate it from the data provider.
96 CGImageRef imgRef;
97
98 // Cached instance of CGDataProvider. dataProvider is alloced the first time a bitmap context is created, providing the
99 // native pixels as a source of the data. The dataProviders life cycle is the same as ISDO. The reference gets
100 // released when we are done with the ISDO.
101 CGDataProviderRef dataProvider;
102
103 // Pointer in memory that is used for create the CGBitmapContext and the CGDataProvider (used for imgRef). This is a native
104 // copy of the pixels for the Image. There is a spearate copy of the pixels that lives in Java heap. There are two main
105 // reasons why we keep those pixels spearate: 1) CG doesn't support all the Java pixel formats 2) The Garbage collector can
106 // move the java pixels at any time. There are possible workarounds for both problems. Number 2) seems to be a more serious issue, since
107 // we can solve 1) by only supporting certain image types.
108 void * nativePixels;
109 NSGraphicsContext* nsRef;
110
111 pthread_mutex_t lock;
112 jint nrOfPixelsOwners;
113 };
114