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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"
void JNIFUNCF(ImageFilterNegative, nativeApplyFilter, jobject bitmap, jint width, jint height)
{
char* destination = 0;
AndroidBitmap_lockPixels(env, bitmap, (void**) &destination);
int tot_len = height * width * 4;
int i;
char * dst = destination;
for (i = 0; i < tot_len; i+=4) {
dst[RED] = 255 - dst[RED];
dst[GREEN] = 255 - dst[GREEN];
dst[BLUE] = 255 - dst[BLUE];
}
AndroidBitmap_unlockPixels(env, bitmap);
}
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