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authorRuben Brunk <rubenbrunk@google.com>2012-12-11 03:40:27 (GMT)
committerRuben Brunk <rubenbrunk@google.com>2012-12-13 00:03:45 (GMT)
commitcd3348840467a32ae1fa1f2f1289a4bbf02bbb8e (patch)
treebdb5a9998183eca65f2923eda82d47057e761a98 /jni/filters
parent2dda1f980adc33d6bf9057a1a486920d2a2379df (diff)
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Added photonegative filter.
Change-Id: I73594573b26873cb3fda49aca6d40761dec3707f
Diffstat (limited to 'jni/filters')
-rw-r--r--jni/filters/negative.c33
1 files changed, 33 insertions, 0 deletions
diff --git a/jni/filters/negative.c b/jni/filters/negative.c
new file mode 100644
index 0000000..735e583
--- /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);
+}