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-rw-r--r--jni/filters/geometry.c184
1 files changed, 184 insertions, 0 deletions
diff --git a/jni/filters/geometry.c b/jni/filters/geometry.c
new file mode 100644
index 000000000..a0b5aaacf
--- /dev/null
+++ b/jni/filters/geometry.c
@@ -0,0 +1,184 @@
+/*
+ * 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 <stdio.h>
+
+__inline__ void flipVertical(char * source, int srcWidth, int srcHeight, char * destination, int dstWidth, int dstHeight){
+ //Vertical
+ size_t cpy_bytes = sizeof(char) * 4;
+ int width = cpy_bytes * srcWidth;
+ int length = srcHeight;
+ int total = length * width;
+ size_t bytes_to_copy = sizeof(char) * width;
+ int i = 0;
+ int temp = total - width;
+ for (i = 0; i < total; i += width) {
+ memcpy(destination + temp - i, source + i, bytes_to_copy);
+ }
+}
+
+__inline__ void flipHorizontal(char * source, int srcWidth, int srcHeight, char * destination, int dstWidth, int dstHeight){
+ //Horizontal
+ size_t cpy_bytes = sizeof(char) * 4;
+ int width = cpy_bytes * srcWidth;
+ int length = srcHeight;
+ int total = length * width;
+ int i = 0;
+ int j = 0;
+ int temp = 0;
+ for (i = 0; i < total; i+= width) {
+ temp = width + i - cpy_bytes;
+ for (j = 0; j < width; j+=cpy_bytes) {
+ memcpy(destination + temp - j, source + i + j, cpy_bytes);
+ }
+ }
+}
+
+__inline__ void flip_fun(int flip, char * source, int srcWidth, int srcHeight, char * destination, int dstWidth, int dstHeight){
+ int horiz = (flip & 1) != 0;
+ int vert = (flip & 2) != 0;
+ if (horiz && vert){
+ int arr_len = dstWidth * dstHeight * sizeof(char) * 4;
+ char* temp = (char *) malloc(arr_len);
+ flipHorizontal(source, srcWidth, srcHeight, temp, dstWidth, dstHeight);
+ flipVertical(temp, dstWidth, dstHeight, destination, dstWidth, dstHeight);
+ free(temp);
+ return;
+ }
+ if (horiz){
+ flipHorizontal(source, srcWidth, srcHeight, destination, dstWidth, dstHeight);
+ return;
+ }
+ if (vert){
+ flipVertical(source, srcWidth, srcHeight, destination, dstWidth, dstHeight);
+ return;
+ }
+}
+
+//90 CCW (opposite of what's used in UI?)
+__inline__ void rotate90(char * source, int srcWidth, int srcHeight, char * destination, int dstWidth, int dstHeight){
+ size_t cpy_bytes = sizeof(char) * 4;
+ int width = cpy_bytes * srcWidth;
+ int length = srcHeight;
+ int total = length * width;
+ int i = 0;
+ int j = 0;
+ for (j = 0; j < length * cpy_bytes; j+= cpy_bytes){
+ for (i = 0; i < width; i+=cpy_bytes){
+ int column_disp = (width - cpy_bytes - i) * length;
+ int row_disp = j;
+ memcpy(destination + column_disp + row_disp , source + j * srcWidth + i, cpy_bytes);
+ }
+ }
+}
+
+__inline__ void rotate180(char * source, int srcWidth, int srcHeight, char * destination, int dstWidth, int dstHeight){
+ flip_fun(3, source, srcWidth, srcHeight, destination, dstWidth, dstHeight);
+}
+
+__inline__ void rotate270(char * source, int srcWidth, int srcHeight, char * destination, int dstWidth, int dstHeight){
+ rotate90(source, srcWidth, srcHeight, destination, dstWidth, dstHeight);
+ flip_fun(3, destination, dstWidth, dstHeight, destination, dstWidth, dstHeight);
+}
+
+// rotate == 1 is 90 degrees, 2 is 180, 3 is 270 (positive is CCW).
+__inline__ void rotate_fun(int rotate, char * source, int srcWidth, int srcHeight, char * destination, int dstWidth, int dstHeight){
+ switch( rotate )
+ {
+ case 1:
+ rotate90(source, srcWidth, srcHeight, destination, dstWidth, dstHeight);
+ break;
+ case 2:
+ rotate180(source, srcWidth, srcHeight, destination, dstWidth, dstHeight);
+ break;
+ case 3:
+ rotate270(source, srcWidth, srcHeight, destination, dstWidth, dstHeight);
+ break;
+ default:
+ break;
+ }
+}
+
+__inline__ void crop(char * source, int srcWidth, int srcHeight, char * destination, int dstWidth, int dstHeight, int offsetWidth, int offsetHeight){
+ size_t cpy_bytes = sizeof(char) * 4;
+ int row_width = cpy_bytes * srcWidth;
+ int new_row_width = cpy_bytes * dstWidth;
+ if ((srcWidth > dstWidth + offsetWidth) || (srcHeight > dstHeight + offsetHeight)){
+ return;
+ }
+ int i = 0;
+ int j = 0;
+ for (j = offsetHeight; j < offsetHeight + dstHeight; j++){
+ memcpy(destination + (j - offsetHeight) * new_row_width, source + j * row_width + offsetWidth * cpy_bytes, cpy_bytes * dstWidth );
+ }
+}
+
+void JNIFUNCF(ImageFilterGeometry, nativeApplyFilterFlip, jobject src, jint srcWidth, jint srcHeight, jobject dst, jint dstWidth, jint dstHeight, jint flip) {
+ char* destination = 0;
+ char* source = 0;
+ if (srcWidth != dstWidth || srcHeight != dstHeight) {
+ return;
+ }
+ AndroidBitmap_lockPixels(env, src, (void**) &source);
+ AndroidBitmap_lockPixels(env, dst, (void**) &destination);
+ flip_fun(flip, source, srcWidth, srcHeight, destination, dstWidth, dstHeight);
+ AndroidBitmap_unlockPixels(env, dst);
+ AndroidBitmap_unlockPixels(env, src);
+}
+
+void JNIFUNCF(ImageFilterGeometry, nativeApplyFilterRotate, jobject src, jint srcWidth, jint srcHeight, jobject dst, jint dstWidth, jint dstHeight, jint rotate) {
+ char* destination = 0;
+ char* source = 0;
+ int len = dstWidth * dstHeight * 4;
+ AndroidBitmap_lockPixels(env, src, (void**) &source);
+ AndroidBitmap_lockPixels(env, dst, (void**) &destination);
+ rotate_fun(rotate, source, srcWidth, srcHeight, destination, dstWidth, dstHeight);
+ AndroidBitmap_unlockPixels(env, dst);
+ AndroidBitmap_unlockPixels(env, src);
+}
+
+void JNIFUNCF(ImageFilterGeometry, nativeApplyFilterCrop, jobject src, jint srcWidth, jint srcHeight, jobject dst, jint dstWidth, jint dstHeight, jint offsetWidth, jint offsetHeight) {
+ char* destination = 0;
+ char* source = 0;
+ int len = dstWidth * dstHeight * 4;
+ AndroidBitmap_lockPixels(env, src, (void**) &source);
+ AndroidBitmap_lockPixels(env, dst, (void**) &destination);
+ crop(source, srcWidth, srcHeight, destination, dstWidth, dstHeight, offsetWidth, offsetHeight);
+ AndroidBitmap_unlockPixels(env, dst);
+ AndroidBitmap_unlockPixels(env, src);
+}
+
+void JNIFUNCF(ImageFilterGeometry, nativeApplyFilterStraighten, jobject src, jint srcWidth, jint srcHeight, jobject dst, jint dstWidth, jint dstHeight, jfloat straightenAngle) {
+ char* destination = 0;
+ char* source = 0;
+ int len = dstWidth * dstHeight * 4;
+ AndroidBitmap_lockPixels(env, src, (void**) &source);
+ AndroidBitmap_lockPixels(env, dst, (void**) &destination);
+ // TODO: implement straighten
+ int i = 0;
+ for (; i < len; i += 4) {
+ int r = source[RED];
+ int g = source[GREEN];
+ int b = source[BLUE];
+ destination[RED] = 128;
+ destination[GREEN] = g;
+ destination[BLUE] = 128;
+ }
+ AndroidBitmap_unlockPixels(env, dst);
+ AndroidBitmap_unlockPixels(env, src);
+}
+