From cd3348840467a32ae1fa1f2f1289a4bbf02bbb8e Mon Sep 17 00:00:00 2001 From: Ruben Brunk Date: Mon, 10 Dec 2012 19:40:27 -0800 Subject: Added photonegative filter. Change-Id: I73594573b26873cb3fda49aca6d40761dec3707f --- jni/filters/negative.c | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 jni/filters/negative.c (limited to 'jni/filters') diff --git a/jni/filters/negative.c b/jni/filters/negative.c new file mode 100644 index 000000000..735e583c9 --- /dev/null +++ b/jni/filters/negative.c @@ -0,0 +1,33 @@ +/* + * 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); +} -- cgit v1.2.3