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Diffstat (limited to 'jni/filters/kmeans.cc')
-rw-r--r-- | jni/filters/kmeans.cc | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/jni/filters/kmeans.cc b/jni/filters/kmeans.cc new file mode 100644 index 000000000..599657c8e --- /dev/null +++ b/jni/filters/kmeans.cc @@ -0,0 +1,47 @@ +/* + * 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 |