generic-library/opencv
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- added missing loadLibrary for inner classes

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- added zero check for pointers in utils.cpp
This commit is contained in:
Andrey Pavlenko 2011-07-11 12:21:58 +00:00
parent 3511bf81de
commit eea62ca6fb
2 changed files with 40 additions and 44 deletions
modules/java
gen_java.py
src/cpp
utils.cpp

1
modules/java/gen_java.py

@ -624,6 +624,7 @@ JNIEXPORT $rtype JNICALL Java_org_opencv_${module}_$fname
)
self.java_code.write(indent_m + "// native stuff\n\n")
self.java_code.write(indent_m + 'static { System.loadLibrary("opencv_java"); }\n')
self.java_code.write( jn_code.getvalue() )
self.java_code.write(
"""

83
modules/java/src/cpp/utils.cpp

@ -1,5 +1,9 @@
#include <jni.h>
#include "opencv2/core/core.hpp"
#include <android/bitmap.h>
#ifdef __cplusplus
extern "C" {
#endif
@ -9,62 +13,48 @@ extern "C" {
* Method: nBitmapToMat(Bitmap b)
* Signature: (L)J
*/
JNIEXPORT jlong JNICALL Java_org_opencv_utils_nBitmapToMat
(JNIEnv *, jclass, jobject);
(JNIEnv * env, jclass cls, jobject bitmap)
{
AndroidBitmapInfo info;
void* pixels;
cv::Mat* m = new cv::Mat();
if ( AndroidBitmap_getInfo(env, bitmap, &info) < 0 )
return (jlong)m; // can't get info
if (info.format != ANDROID_BITMAP_FORMAT_RGBA_8888)
return (jlong)m; // incompatible format
if ( AndroidBitmap_lockPixels(env, bitmap, &pixels) < 0 )
return (jlong)m; // can't get pixels
m->create(info.height, info.width, CV_8UC4);
if(m->data && pixels)
memcpy(m->data, pixels, info.height * info.width * 4);
AndroidBitmap_unlockPixels(env, bitmap);
return (jlong)m;
}
/*
* Class: org_opencv_utils
* Method: nBitmapToMat(long m, Bitmap b)
* Signature: (JL)Z
*/
JNIEXPORT jboolean JNICALL Java_org_opencv_utils_nMatToBitmap
(JNIEnv *, jclass, jlong, jobject);
#ifdef __cplusplus
}
#endif
#include "opencv2/core/core.hpp"
#include <android/bitmap.h>
JNIEXPORT jlong JNICALL Java_org_opencv_utils_nBitmapToMat
(JNIEnv * env, jclass cls, jobject bitmap)
{
AndroidBitmapInfo info;
void* pixels;
cv::Mat* m = NULL;
if ( AndroidBitmap_getInfo(env, bitmap, &info) < 0 )
return 0; // can't get info
if (info.format != ANDROID_BITMAP_FORMAT_RGBA_8888)
return 0; // incompatible format
if ( AndroidBitmap_lockPixels(env, bitmap, &pixels) < 0 )
return 0; // can't get pixels
m = new cv::Mat(info.height, info.width, CV_8UC4);
memcpy(m->data, pixels, info.height * info.width * 4);
AndroidBitmap_unlockPixels(env, bitmap);
return (jlong)m;
}
JNIEXPORT jboolean JNICALL Java_org_opencv_utils_nMatToBitmap
(JNIEnv * env, jclass cls, jlong m, jobject bitmap)
{
AndroidBitmapInfo info;
void* pixels;
cv::Mat* mat = (cv::Mat*) m;
cv::Mat* mat = (cv::Mat*) m;
if ( m == 0 )
return false; // no native Mat behind
if ( mat == 0 || mat->data == 0)
return false; // no native Mat behind
if ( AndroidBitmap_getInfo(env, bitmap, &info) < 0 )
if ( AndroidBitmap_getInfo(env, bitmap, &info) < 0 )
return false; // can't get info
if (info.format != ANDROID_BITMAP_FORMAT_RGBA_8888)
@ -73,9 +63,14 @@ JNIEXPORT jboolean JNICALL Java_org_opencv_utils_nMatToBitmap
if ( AndroidBitmap_lockPixels(env, bitmap, &pixels) < 0 )
return false; // can't get pixels
memcpy(pixels, mat->data, info.height * info.width * 4);
if(mat->data && pixels)
memcpy(pixels, mat->data, info.height * info.width * 4);
AndroidBitmap_unlockPixels(env, bitmap);
return true;
return true;
}
#ifdef __cplusplus
}
#endif