The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1 | #ifndef GraphicsJNI_DEFINED |
| 2 | #define GraphicsJNI_DEFINED |
| 3 | |
Patrick Dubroy | e4ac2d6 | 2010-12-01 11:23:13 -0800 | [diff] [blame] | 4 | #include "SkBitmap.h" |
| 5 | #include "SkDevice.h" |
| 6 | #include "SkPixelRef.h" |
| 7 | #include "SkMallocPixelRef.h" |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 8 | #include "SkPoint.h" |
| 9 | #include "SkRect.h" |
Wei-Ta Chen | 6b849e2 | 2010-09-07 17:32:18 +0800 | [diff] [blame] | 10 | #include "../images/SkBitmapRegionDecoder.h" |
Joseph Wen | f1f48bc | 2010-07-19 16:59:51 +0800 | [diff] [blame] | 11 | #include "../images/SkImageDecoder.h" |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 12 | #include <jni.h> |
| 13 | |
| 14 | class SkCanvas; |
| 15 | class SkPaint; |
| 16 | class SkPicture; |
| 17 | |
| 18 | class GraphicsJNI { |
| 19 | public: |
| 20 | // returns true if an exception is set (and dumps it out to the Log) |
| 21 | static bool hasException(JNIEnv*); |
| 22 | |
| 23 | static void get_jrect(JNIEnv*, jobject jrect, int* L, int* T, int* R, int* B); |
| 24 | static void set_jrect(JNIEnv*, jobject jrect, int L, int T, int R, int B); |
| 25 | |
| 26 | static SkIRect* jrect_to_irect(JNIEnv*, jobject jrect, SkIRect*); |
| 27 | static void irect_to_jrect(const SkIRect&, JNIEnv*, jobject jrect); |
| 28 | |
| 29 | static SkRect* jrectf_to_rect(JNIEnv*, jobject jrectf, SkRect*); |
| 30 | static SkRect* jrect_to_rect(JNIEnv*, jobject jrect, SkRect*); |
| 31 | static void rect_to_jrectf(const SkRect&, JNIEnv*, jobject jrectf); |
Elliott Hughes | 8451b25 | 2011-04-07 19:17:57 -0700 | [diff] [blame] | 32 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 33 | static void set_jpoint(JNIEnv*, jobject jrect, int x, int y); |
Elliott Hughes | 8451b25 | 2011-04-07 19:17:57 -0700 | [diff] [blame] | 34 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 35 | static SkIPoint* jpoint_to_ipoint(JNIEnv*, jobject jpoint, SkIPoint* point); |
| 36 | static void ipoint_to_jpoint(const SkIPoint& point, JNIEnv*, jobject jpoint); |
Elliott Hughes | 8451b25 | 2011-04-07 19:17:57 -0700 | [diff] [blame] | 37 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 38 | static SkPoint* jpointf_to_point(JNIEnv*, jobject jpointf, SkPoint* point); |
| 39 | static void point_to_jpointf(const SkPoint& point, JNIEnv*, jobject jpointf); |
Elliott Hughes | 8451b25 | 2011-04-07 19:17:57 -0700 | [diff] [blame] | 40 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 41 | static SkCanvas* getNativeCanvas(JNIEnv*, jobject canvas); |
| 42 | static SkPaint* getNativePaint(JNIEnv*, jobject paint); |
| 43 | static SkBitmap* getNativeBitmap(JNIEnv*, jobject bitmap); |
| 44 | static SkPicture* getNativePicture(JNIEnv*, jobject picture); |
| 45 | static SkRegion* getNativeRegion(JNIEnv*, jobject region); |
Elliott Hughes | 8451b25 | 2011-04-07 19:17:57 -0700 | [diff] [blame] | 46 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 47 | /** Return the corresponding native config from the java Config enum, |
| 48 | or kNo_Config if the java object is null. |
| 49 | */ |
| 50 | static SkBitmap::Config getNativeBitmapConfig(JNIEnv*, jobject jconfig); |
Elliott Hughes | 8451b25 | 2011-04-07 19:17:57 -0700 | [diff] [blame] | 51 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 52 | /** Create a java Bitmap object given the native bitmap (required) and optional |
Patrick Dubroy | e4ac2d6 | 2010-12-01 11:23:13 -0800 | [diff] [blame] | 53 | storage array (may be null). |
| 54 | */ |
| 55 | static jobject createBitmap(JNIEnv* env, SkBitmap* bitmap, jbyteArray buffer, |
Amith Yamasani | ec4a504 | 2012-04-04 10:27:15 -0700 | [diff] [blame] | 56 | bool isMutable, jbyteArray ninepatch, jintArray layoutbounds, |
| 57 | int density = -1); |
Patrick Dubroy | e4ac2d6 | 2010-12-01 11:23:13 -0800 | [diff] [blame] | 58 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 59 | static jobject createBitmap(JNIEnv* env, SkBitmap* bitmap, bool isMutable, |
Patrick Dubroy | e4ac2d6 | 2010-12-01 11:23:13 -0800 | [diff] [blame] | 60 | jbyteArray ninepatch, int density = -1); |
Elliott Hughes | 8451b25 | 2011-04-07 19:17:57 -0700 | [diff] [blame] | 61 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 62 | static jobject createRegion(JNIEnv* env, SkRegion* region); |
| 63 | |
Wei-Ta Chen | 6b849e2 | 2010-09-07 17:32:18 +0800 | [diff] [blame] | 64 | static jobject createBitmapRegionDecoder(JNIEnv* env, SkBitmapRegionDecoder* bitmap); |
Joseph Wen | f1f48bc | 2010-07-19 16:59:51 +0800 | [diff] [blame] | 65 | |
Patrick Dubroy | e4ac2d6 | 2010-12-01 11:23:13 -0800 | [diff] [blame] | 66 | static jbyteArray allocateJavaPixelRef(JNIEnv* env, SkBitmap* bitmap, |
| 67 | SkColorTable* ctable); |
| 68 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 69 | /** Copy the colors in colors[] to the bitmap, convert to the correct |
| 70 | format along the way. |
| 71 | */ |
| 72 | static bool SetPixels(JNIEnv* env, jintArray colors, int srcOffset, |
| 73 | int srcStride, int x, int y, int width, int height, |
| 74 | const SkBitmap& dstBitmap); |
Patrick Dubroy | e4ac2d6 | 2010-12-01 11:23:13 -0800 | [diff] [blame] | 75 | |
| 76 | static jbyteArray getBitmapStorageObj(SkPixelRef *pixref); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 77 | }; |
| 78 | |
Patrick Dubroy | e4ac2d6 | 2010-12-01 11:23:13 -0800 | [diff] [blame] | 79 | class AndroidPixelRef : public SkMallocPixelRef { |
| 80 | public: |
| 81 | AndroidPixelRef(JNIEnv* env, void* storage, size_t size, jbyteArray storageObj, |
| 82 | SkColorTable* ctable); |
| 83 | |
| 84 | virtual ~AndroidPixelRef(); |
| 85 | |
| 86 | jbyteArray getStorageObj() { return fStorageObj; } |
| 87 | |
| 88 | void setLocalJNIRef(jbyteArray arr); |
| 89 | |
Patrick Dubroy | a2f0e2d | 2010-12-15 15:03:47 -0800 | [diff] [blame] | 90 | /** Used to hold a ref to the pixels when the Java bitmap may be collected. |
| 91 | * If specified, 'localref' is a valid JNI local reference to the byte array |
| 92 | * containing the pixel data. |
| 93 | * |
| 94 | * 'localref' may only be NULL if setLocalJNIRef() was already called with |
| 95 | * a JNI local ref that is still valid. |
| 96 | */ |
| 97 | virtual void globalRef(void* localref=NULL); |
| 98 | |
| 99 | /** Release a ref that was acquired using globalRef(). */ |
Patrick Dubroy | e4ac2d6 | 2010-12-01 11:23:13 -0800 | [diff] [blame] | 100 | virtual void globalUnref(); |
| 101 | |
| 102 | private: |
| 103 | JavaVM* fVM; |
| 104 | bool fOnJavaHeap; // If true, the memory was allocated on the Java heap |
| 105 | |
| 106 | jbyteArray fStorageObj; // The Java byte[] object used as the bitmap backing store |
| 107 | bool fHasGlobalRef; // If true, fStorageObj holds a JNI global ref |
| 108 | |
| 109 | mutable int32_t fGlobalRefCnt; |
| 110 | }; |
| 111 | |
| 112 | /** A helper class for accessing Java-heap-allocated bitmaps. |
| 113 | * This should be used when calling into a JNI method that retains a |
| 114 | * reference to the bitmap longer than the lifetime of the Java Bitmap. |
| 115 | * |
| 116 | * After creating an instance of this class, a call to |
| 117 | * AndroidPixelRef::globalRef() will allocate a JNI global reference |
| 118 | * to the backing buffer object. |
| 119 | */ |
| 120 | class JavaHeapBitmapRef { |
| 121 | public: |
| 122 | |
| 123 | JavaHeapBitmapRef(JNIEnv *env, SkBitmap* nativeBitmap, jbyteArray buffer); |
| 124 | ~JavaHeapBitmapRef(); |
| 125 | |
| 126 | private: |
| 127 | JNIEnv* fEnv; |
| 128 | SkBitmap* fNativeBitmap; |
| 129 | jbyteArray fBuffer; |
| 130 | }; |
| 131 | |
| 132 | /** Allocator which allocates the backing buffer in the Java heap. |
| 133 | * Instances can only be used to perform a single allocation, which helps |
| 134 | * ensure that the allocated buffer is properly accounted for with a |
| 135 | * reference in the heap (or a JNI global reference). |
| 136 | */ |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 137 | class JavaPixelAllocator : public SkBitmap::Allocator { |
| 138 | public: |
Carl Shapiro | 12d81c4 | 2010-12-17 18:36:48 -0800 | [diff] [blame] | 139 | JavaPixelAllocator(JNIEnv* env); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 140 | // overrides |
| 141 | virtual bool allocPixelRef(SkBitmap* bitmap, SkColorTable* ctable); |
Elliott Hughes | 8451b25 | 2011-04-07 19:17:57 -0700 | [diff] [blame] | 142 | |
Patrick Dubroy | afde46e | 2010-12-15 11:52:01 -0800 | [diff] [blame] | 143 | /** Return the Java array object created for the last allocation. |
| 144 | * This returns a local JNI reference which the caller is responsible |
| 145 | * for storing appropriately (usually by passing it to the Bitmap |
| 146 | * constructor). |
| 147 | */ |
| 148 | jbyteArray getStorageObj() { return fStorageObj; } |
| 149 | |
| 150 | /** Same as getStorageObj(), but also resets the allocator so that it |
| 151 | * can allocate again. |
| 152 | */ |
| 153 | jbyteArray getStorageObjAndReset() { |
| 154 | jbyteArray result = fStorageObj; |
| 155 | fStorageObj = NULL; |
| 156 | fAllocCount = 0; |
| 157 | return result; |
| 158 | }; |
Patrick Dubroy | e4ac2d6 | 2010-12-01 11:23:13 -0800 | [diff] [blame] | 159 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 160 | private: |
Wei-Ta Chen | 291303b | 2010-08-18 15:40:29 +0800 | [diff] [blame] | 161 | JavaVM* fVM; |
Patrick Dubroy | e4ac2d6 | 2010-12-01 11:23:13 -0800 | [diff] [blame] | 162 | bool fAllocateInJavaHeap; |
| 163 | jbyteArray fStorageObj; |
Patrick Dubroy | afde46e | 2010-12-15 11:52:01 -0800 | [diff] [blame] | 164 | int fAllocCount; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 165 | }; |
| 166 | |
Mike Reed | c04851f | 2009-10-28 15:09:45 -0400 | [diff] [blame] | 167 | enum JNIAccess { |
| 168 | kRO_JNIAccess, |
| 169 | kRW_JNIAccess |
| 170 | }; |
| 171 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 172 | class AutoJavaFloatArray { |
| 173 | public: |
Mike Reed | c04851f | 2009-10-28 15:09:45 -0400 | [diff] [blame] | 174 | AutoJavaFloatArray(JNIEnv* env, jfloatArray array, |
| 175 | int minLength = 0, JNIAccess = kRW_JNIAccess); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 176 | ~AutoJavaFloatArray(); |
Elliott Hughes | 8451b25 | 2011-04-07 19:17:57 -0700 | [diff] [blame] | 177 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 178 | float* ptr() const { return fPtr; } |
| 179 | int length() const { return fLen; } |
Elliott Hughes | 8451b25 | 2011-04-07 19:17:57 -0700 | [diff] [blame] | 180 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 181 | private: |
| 182 | JNIEnv* fEnv; |
| 183 | jfloatArray fArray; |
| 184 | float* fPtr; |
| 185 | int fLen; |
Mike Reed | c04851f | 2009-10-28 15:09:45 -0400 | [diff] [blame] | 186 | int fReleaseMode; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 187 | }; |
| 188 | |
| 189 | class AutoJavaIntArray { |
| 190 | public: |
| 191 | AutoJavaIntArray(JNIEnv* env, jintArray array, int minLength = 0); |
| 192 | ~AutoJavaIntArray(); |
Elliott Hughes | 8451b25 | 2011-04-07 19:17:57 -0700 | [diff] [blame] | 193 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 194 | jint* ptr() const { return fPtr; } |
| 195 | int length() const { return fLen; } |
Elliott Hughes | 8451b25 | 2011-04-07 19:17:57 -0700 | [diff] [blame] | 196 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 197 | private: |
| 198 | JNIEnv* fEnv; |
| 199 | jintArray fArray; |
| 200 | jint* fPtr; |
| 201 | int fLen; |
| 202 | }; |
| 203 | |
| 204 | class AutoJavaShortArray { |
| 205 | public: |
Mike Reed | c04851f | 2009-10-28 15:09:45 -0400 | [diff] [blame] | 206 | AutoJavaShortArray(JNIEnv* env, jshortArray array, |
| 207 | int minLength = 0, JNIAccess = kRW_JNIAccess); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 208 | ~AutoJavaShortArray(); |
Elliott Hughes | 8451b25 | 2011-04-07 19:17:57 -0700 | [diff] [blame] | 209 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 210 | jshort* ptr() const { return fPtr; } |
| 211 | int length() const { return fLen; } |
Elliott Hughes | 8451b25 | 2011-04-07 19:17:57 -0700 | [diff] [blame] | 212 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 213 | private: |
| 214 | JNIEnv* fEnv; |
| 215 | jshortArray fArray; |
| 216 | jshort* fPtr; |
| 217 | int fLen; |
Mike Reed | c04851f | 2009-10-28 15:09:45 -0400 | [diff] [blame] | 218 | int fReleaseMode; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 219 | }; |
| 220 | |
| 221 | class AutoJavaByteArray { |
| 222 | public: |
| 223 | AutoJavaByteArray(JNIEnv* env, jbyteArray array, int minLength = 0); |
| 224 | ~AutoJavaByteArray(); |
Elliott Hughes | 8451b25 | 2011-04-07 19:17:57 -0700 | [diff] [blame] | 225 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 226 | jbyte* ptr() const { return fPtr; } |
| 227 | int length() const { return fLen; } |
Elliott Hughes | 8451b25 | 2011-04-07 19:17:57 -0700 | [diff] [blame] | 228 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 229 | private: |
| 230 | JNIEnv* fEnv; |
| 231 | jbyteArray fArray; |
| 232 | jbyte* fPtr; |
| 233 | int fLen; |
| 234 | }; |
| 235 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 236 | void doThrowNPE(JNIEnv* env); |
| 237 | void doThrowAIOOBE(JNIEnv* env); // Array Index Out Of Bounds Exception |
| 238 | void doThrowIAE(JNIEnv* env, const char* msg = NULL); // Illegal Argument |
| 239 | void doThrowRE(JNIEnv* env, const char* msg = NULL); // Runtime |
| 240 | void doThrowISE(JNIEnv* env, const char* msg = NULL); // Illegal State |
| 241 | void doThrowOOME(JNIEnv* env, const char* msg = NULL); // Out of memory |
Joseph Wen | f1f48bc | 2010-07-19 16:59:51 +0800 | [diff] [blame] | 242 | void doThrowIOE(JNIEnv* env, const char* msg = NULL); // IO Exception |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 243 | |
| 244 | #define NPE_CHECK_RETURN_ZERO(env, object) \ |
| 245 | do { if (NULL == (object)) { doThrowNPE(env); return 0; } } while (0) |
| 246 | |
| 247 | #define NPE_CHECK_RETURN_VOID(env, object) \ |
| 248 | do { if (NULL == (object)) { doThrowNPE(env); return; } } while (0) |
| 249 | |
| 250 | #endif |