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/*
* Copyright (C) 2012 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "filters.h"
#include "kmeans.h"
#ifdef __cplusplus
extern "C" {
#endif
void JNIFUNCF(ImageFilterKMeans, nativeApplyFilter, jobject bitmap, jint width, jint height, jint p)
{
char* destination = 0;
AndroidBitmap_lockPixels(env, bitmap, (void**) &destination);
unsigned char * dst = (unsigned char *) destination;
int len = width * height * 4;
int dimension = 3;
int stride = 4;
int iterations = 4;
int k = p;
unsigned char finalCentroids[k * stride];
// TODO: add downsampling and better heuristic to improve speed, then up iterations
// does K-Means clustering on rgb bitmap colors
runKMeans<unsigned char, int>(k, finalCentroids, dst, len, dimension, stride, iterations);
applyCentroids<unsigned char, int>(k, finalCentroids, dst, len, dimension, stride);
AndroidBitmap_unlockPixels(env, bitmap);
}
#ifdef __cplusplus
}
#endif
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