1/* libs/android_runtime/android/graphics/ColorFilter.cpp
2**
3** Copyright 2006, The Android Open Source Project
4**
5** Licensed under the Apache License, Version 2.0 (the "License");
6** you may not use this file except in compliance with the License.
7** You may obtain a copy of the License at
8**
9**     http://www.apache.org/licenses/LICENSE-2.0
10**
11** Unless required by applicable law or agreed to in writing, software
12** distributed under the License is distributed on an "AS IS" BASIS,
13** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14** See the License for the specific language governing permissions and
15** limitations under the License.
16*/
17
18#include "jni.h"
19#include "GraphicsJNI.h"
20#include <android_runtime/AndroidRuntime.h>
21
22#include "SkColorFilter.h"
23#include "SkColorMatrixFilter.h"
24#include "SkPorterDuff.h"
25
26#include <SkiaColorFilter.h>
27#include <Caches.h>
28
29namespace android {
30
31using namespace uirenderer;
32
33class SkColorFilterGlue {
34public:
35    static void finalizer(JNIEnv* env, jobject clazz, SkColorFilter* obj, SkiaColorFilter* f) {
36        SkSafeUnref(obj);
37        // f == NULL when not !USE_OPENGL_RENDERER, so no need to delete outside the ifdef
38#ifdef USE_OPENGL_RENDERER
39        if (android::uirenderer::Caches::hasInstance()) {
40            android::uirenderer::Caches::getInstance().resourceCache.destructor(f);
41        } else {
42            delete f;
43        }
44#endif
45    }
46
47    static SkiaColorFilter* glCreatePorterDuffFilter(JNIEnv* env, jobject, SkColorFilter *skFilter,
48            jint srcColor, SkPorterDuff::Mode mode) {
49#ifdef USE_OPENGL_RENDERER
50        return new SkiaBlendFilter(skFilter, srcColor, SkPorterDuff::ToXfermodeMode(mode));
51#else
52        return NULL;
53#endif
54    }
55
56    static SkiaColorFilter* glCreateLightingFilter(JNIEnv* env, jobject, SkColorFilter *skFilter,
57            jint mul, jint add) {
58#ifdef USE_OPENGL_RENDERER
59        return new SkiaLightingFilter(skFilter, mul, add);
60#else
61        return NULL;
62#endif
63    }
64
65    static SkiaColorFilter* glCreateColorMatrixFilter(JNIEnv* env, jobject, SkColorFilter *skFilter,
66            jfloatArray jarray) {
67#ifdef USE_OPENGL_RENDERER
68        AutoJavaFloatArray autoArray(env, jarray, 20);
69        const float* src = autoArray.ptr();
70
71        float* colorMatrix = new float[16];
72        memcpy(colorMatrix, src, 4 * sizeof(float));
73        memcpy(&colorMatrix[4], &src[5], 4 * sizeof(float));
74        memcpy(&colorMatrix[8], &src[10], 4 * sizeof(float));
75        memcpy(&colorMatrix[12], &src[15], 4 * sizeof(float));
76
77        float* colorVector = new float[4];
78        colorVector[0] = src[4];
79        colorVector[1] = src[9];
80        colorVector[2] = src[14];
81        colorVector[3] = src[19];
82
83        return new SkiaColorMatrixFilter(skFilter, colorMatrix, colorVector);
84#else
85        return NULL;
86#endif
87    }
88
89    static SkColorFilter* CreatePorterDuffFilter(JNIEnv* env, jobject, jint srcColor,
90            SkPorterDuff::Mode mode) {
91        return SkColorFilter::CreateModeFilter(srcColor, SkPorterDuff::ToXfermodeMode(mode));
92    }
93
94    static SkColorFilter* CreateLightingFilter(JNIEnv* env, jobject, jint mul, jint add) {
95        return SkColorFilter::CreateLightingFilter(mul, add);
96    }
97
98    static SkColorFilter* CreateColorMatrixFilter(JNIEnv* env, jobject, jfloatArray jarray) {
99        AutoJavaFloatArray autoArray(env, jarray, 20);
100        const float* src = autoArray.ptr();
101
102#ifdef SK_SCALAR_IS_FIXED
103        SkFixed array[20];
104        for (int i = 0; i < 20; i++) {
105            array[i] = SkFloatToScalar(src[i]);
106        }
107        return new SkColorMatrixFilter(array);
108#else
109        return new SkColorMatrixFilter(src);
110#endif
111    }
112};
113
114static JNINativeMethod colorfilter_methods[] = {
115    {"finalizer", "(II)V", (void*) SkColorFilterGlue::finalizer}
116};
117
118static JNINativeMethod porterduff_methods[] = {
119    { "native_CreatePorterDuffFilter", "(II)I", (void*) SkColorFilterGlue::CreatePorterDuffFilter   },
120    { "nCreatePorterDuffFilter",       "(III)I", (void*) SkColorFilterGlue::glCreatePorterDuffFilter }
121};
122
123static JNINativeMethod lighting_methods[] = {
124    { "native_CreateLightingFilter", "(II)I", (void*) SkColorFilterGlue::CreateLightingFilter   },
125    { "nCreateLightingFilter",       "(III)I", (void*) SkColorFilterGlue::glCreateLightingFilter },
126};
127
128static JNINativeMethod colormatrix_methods[] = {
129    { "nativeColorMatrixFilter", "([F)I", (void*) SkColorFilterGlue::CreateColorMatrixFilter   },
130    { "nColorMatrixFilter",      "(I[F)I", (void*) SkColorFilterGlue::glCreateColorMatrixFilter }
131};
132
133#define REG(env, name, array) \
134    result = android::AndroidRuntime::registerNativeMethods(env, name, array, \
135                                                    SK_ARRAY_COUNT(array));  \
136    if (result < 0) return result
137
138int register_android_graphics_ColorFilter(JNIEnv* env) {
139    int result;
140
141    REG(env, "android/graphics/ColorFilter", colorfilter_methods);
142    REG(env, "android/graphics/PorterDuffColorFilter", porterduff_methods);
143    REG(env, "android/graphics/LightingColorFilter", lighting_methods);
144    REG(env, "android/graphics/ColorMatrixColorFilter", colormatrix_methods);
145
146    return 0;
147}
148
149}
150