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 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 }
54 typedef ContextInfo;
55
56 struct _ImageInfo
57 {
58 size_t bitsPerComponent;
59 size_t bitsPerPixel;
60 size_t bytesPerPixel;
61 size_t bytesPerRow;
62 CGImageAlphaInfo alphaInfo;
63 CGColorSpaceRef colorSpace;
64 }
65 typedef ImageInfo;
66
67 struct _ImageSDOps
68 {
69 QuartzSDOps qsdo; // must be the first entry!
70
71 ContextInfo contextInfo;
72 ImageInfo imageInfo;
73 BOOL isSubImage;
74
75 jint* javaImageInfo;
76
77 // parameters specifying this BufferedImage given to us from Java
78 jobject array;
79 jint offset;
80 jint width;
81 jint height;
82 jint javaPixelBytes;
83 jint javaPixelsBytesPerRow;
84 jobject icm;
85 jint type;
86
87 Pixel8bit* pixels;
88 Pixel8bit* pixelsLocked;
89
90 // needed by TYPE_BYTE_INDEXED
91 UInt16* indexedColorTable;
92 UInt32* lutData;
93 UInt32 lutDataSize;
94
95 // Used as a cached image ref created from the isdo.dataprovider. This is only a chached image, and it might become invalid
96 // if somebody draws on the bitmap context, or the pixels are changed in java. In that case, we need to NULL out
97 // this image and recreate it from the data provider.
98 CGImageRef imgRef;
99
100 // Cached instance of CGDataProvider. dataProvider is alloced the first time a bitmap context is created, providing the
101 // native pixels as a source of the data. The dataProviders life cycle is the same as ISDO. The reference gets
102 // released when we are done with the ISDO.
103 CGDataProviderRef dataProvider;
104
105 // Pointer in memory that is used for create the CGBitmapContext and the CGDataProvider (used for imgRef). This is a native
106 // copy of the pixels for the Image. There is a spearate copy of the pixels that lives in Java heap. There are two main
107 // reasons why we keep those pixels spearate: 1) CG doesn't support all the Java pixel formats 2) The Garbage collector can
108 // move the java pixels at any time. There are possible workarounds for both problems. Number 2) seems to be a more serious issue, since
109 // we can solve 1) by only supporting certain image types.
110 void * nativePixels;
111 NSGraphicsContext* nsRef;
112
113 pthread_mutex_t lock;
114 jint nrOfPixelsOwners;
115 };
116