1 /* Copyright (C) 2013 The Android Open Source Project
2  *
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at
6  *
7  *      http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 
16 // Native function to extract contrast from image (handed down as ByteBuffer).
17 
18 #ifndef ANDROID_FILTERFW_JNI_CONTRAST_H
19 #define ANDROID_FILTERFW_JNI_CONTRAST_H
20 
21 #include <jni.h>
22 
23 #ifdef __cplusplus
24 extern "C" {
25 #endif
26 
27     JNIEXPORT jfloat JNICALL
28     Java_androidx_media_filterfw_samples_simplecamera_ContrastRatioFilter_contrastOperator(
29         JNIEnv* env, jclass clazz, jint width, jint height, jobject imageBuffer);
30 
31 #ifdef __cplusplus
32 }
33 #endif
34 
35 #endif // ANDROID_FILTERFW_JNI_CONTRAST_H
36 
37