From 7d80bdb6ca1db08ecd29389ac7f263ecff6c5b70 Mon Sep 17 00:00:00 2001
From: Jack Yoo <jyoo@codeaurora.org>
Date: Wed, 13 Jul 2016 14:49:22 -0700
Subject: SnapdragonCamera: Selfie Mirror mode

Selfie mirror menu for front camera1.

Change-Id: I2e6845c9e25481106f51772b5d3dfd0a971a2be7
CRs-Fixed: 1050663
---
 jni/image_util_jni.cpp | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

(limited to 'jni')

diff --git a/jni/image_util_jni.cpp b/jni/image_util_jni.cpp
index 2297f9164..a4779b3d7 100644
--- a/jni/image_util_jni.cpp
+++ b/jni/image_util_jni.cpp
@@ -44,6 +44,8 @@ JNIEXPORT jint JNICALL Java_com_android_camera_imageprocessor_FrameProcessor_nat
          jint imageWidth, jint imageHeight, jint degree, jobjectArray outBuf);
 JNIEXPORT jint JNICALL Java_com_android_camera_imageprocessor_FrameProcessor_nativeNV21toRgb(
         JNIEnv *env, jobject thiz, jobjectArray yvuBuf, jobjectArray rgbBuf, jint width, jint height);
+JNIEXPORT jint JNICALL Java_com_android_camera_imageprocessor_PostProcessor_nativeFlipVerticalNV21(
+        JNIEnv* env, jobject thiz, jbyteArray yvuBytes, jint width, jint height);
 #ifdef __cplusplus
 }
 #endif
@@ -150,4 +152,32 @@ jint JNICALL Java_com_android_camera_imageprocessor_FrameProcessor_nativeNV21toR
         }
     }
     return 0;
+}
+
+jint JNICALL Java_com_android_camera_imageprocessor_PostProcessor_nativeFlipVerticalNV21(
+        JNIEnv* env, jobject thiz, jbyteArray yvuBytes, jint width, jint height)
+{
+    jbyte* imageDataNV21Array = env->GetByteArrayElements(yvuBytes, NULL);
+    uint8_t *buf = (uint8_t *)imageDataNV21Array;
+    int ysize = width * height;
+    uint8_t temp1, temp2;
+    for(int x=0; x < width; x++) {
+        for(int y=0; y < height/2; y++) {
+            temp1 = buf[y*width + x];
+            buf[y*width + x] = buf[(height-1-y)*width + x];
+            buf[(height-1-y)*width + x] = temp1;
+        }
+    }
+    for(int x=0; x < width; x+=2) {
+        for(int y=0; y < height/4; y++) {
+            temp1 = buf[ysize + y*width + x];
+            temp2 = buf[ysize + y*width + x + 1];
+            buf[ysize + y*width + x] = buf[ysize + (height/2-1-y)*width + x];
+            buf[ysize + y*width + x + 1] = buf[ysize + (height/2-1-y)*width + x + 1];
+            buf[ysize + (height/2-1-y)*width + x] = temp1;
+            buf[ysize + (height/2-1-y)*width + x + 1] = temp2;
+        }
+    }
+    env->ReleaseByteArrayElements(yvuBytes, imageDataNV21Array, JNI_ABORT);
+    return 0;
 }
\ No newline at end of file
-- 
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