/*****************************************************************************
*???Cartoonifier?for?Android.
******************************************************************************
*???by?Shervin?Emami?5th?Dec?2012?（shervin.emami@gmail.com）
*???http://www.shervinemami.info/
******************************************************************************
*???Ch1?of?the?book?“Mastering?OpenCV?with?Practical?Computer?Vision?Projects“
*???Copyright?Packt?Publishing?2012.
*???http://www.packtpub.com/cool-projects-with-opencv/book
*****************************************************************************/

#include?
#include?
#include?
#include?


#include?“cartoon.h“
#include?“ImageUtils.h“?//?Handy?functions?for?debugging?OpenCV?images?by?Shervin?Emami.


using?namespace?std;
using?namespace?cv;

extern?“C“?{


//?Just?show?the?plain?camera?image?without?modifying?it.
JNIEXPORT?void?JNICALL?Java_com_Cartoonifier_CartoonifierView_ShowPreview（JNIEnv*?env?jobject
????????jint?width?jint?height?jbyteArray?yuv?jintArray?bgra）
{
????//?Get?native?access?to?the?given?Java?arrays.
????jbyte*?_yuv??=?env->GetByteArrayElements（yuv?0）;
????jint*??_bgra?=?env->GetIntArrayElements（bgra?0）;

????//?Prepare?a?cv::Mat?that?points?to?the?YUV420sp?data.
????Mat?myuv（height?+?height/2?width?CV_8UC1?（uchar?*）_yuv）;
????//?Prepare?a?cv::Mat?that?points?to?the?BGRA?output?data.
????Mat?mbgra（height?width?CV_8UC4?（uchar?*）_bgra）;

????//?Convert?the?color?format?from?the?camera‘s
????//?NV21?“YUV420sp“?format?to?an?Android?BGRA?color?image.
????cvtColor（myuv?mbgra?CV_YUV420sp2BGRA）;

????//?OpenCV?can?now?access/modify?the?BGRA?image?if?we?want?...


????//?Release?the?native?lock?we?placed?on?the?Java?arrays.
????env->ReleaseIntArrayElements（bgra?_bgra?0）;
????env->ReleaseByteArrayElements（yuv?_yuv?0）;
}


DECLARE_TIMING（CartoonifyImage）;


//?Modify?the?camera?image?using?the?Cartoonifier?filter.
JNIEXPORT?void?JNICALL?Java_com_Cartoonifier_CartoonifierView_CartoonifyImage（JNIEnv*?env?jobject
????????jint?width?jint?height?jbyteArray?yuv?jintArray?bgra
????????jboolean?sketchMode?jboolean?alienMode?jboolean?evilMode?jboolean?debugMode）
{
????START_TIMING（CartoonifyImage）;

????//?Get?native?access?to?the?given?Java?arrays.
????jbyte*?_yuv??=?env->GetByteArrayElements（yuv?0）;
????jint*??_bgra?=?env->GetIntArrayElements（bgra?0）;

????//?Input?color?format?（from?camera）:
????//?“myuv“?is?the?color?image?in?the?camera‘s?native?NV21?YUV?420?“semi-planar“?format?which?means
????//?the?first?part?of?the?array?is?the?grayscale?pixel?array?followed?by?a?quarter-sized?pixel
????//?array?that?is?the?U?&?V?color?channels?interleaved.?So?if?we?just?want?to?access?a?grayscale
????//?image?we?can?get?it?directly?from?the?1st?part?of?a?YUV420sp?semi-planar?image?without?any
????//?conversions.?But?if?we?want?a?color?image?（eg:?BGRA?color?format?that?i