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Added native camera Android sample; Added manual port of VideoCapture class.

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This commit is contained in:
Andrey Kamaev 2011-07-15 14:03:53 +00:00
parent c3d40ca0dd
commit cc447448ff
18 changed files with 1043 additions and 5 deletions
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2
modules/java/android_test/src/org/opencv/test/highgui/VideoCaptureTest.java
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@ -1,7 +1,7 @@
package org.opencv.test.highgui;
import org.opencv.highgui;
import org.opencv.highgui.VideoCapture;
import org.opencv.VideoCapture;
import org.opencv.test.OpenCVTestCase;

1
modules/java/gen_java.py
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@ -88,6 +88,7 @@ func_ignore_list = (
class_ignore_list = (
"VideoWriter",
"VideoCapture",
)
# c_type : { java/jni correspondence }

454
modules/java/src/cpp/VideoCapture.cpp Normal file
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@ -0,0 +1,454 @@
//
// This file is auto-generated, please don't edit!
//
#include <jni.h>
#ifdef DEBUG
#include <android/log.h>
#define MODULE_LOG_TAG "OpenCV.highgui"
#define LOGD(...) ((void)__android_log_print(ANDROID_LOG_DEBUG, MODULE_LOG_TAG, __VA_ARGS__))
#endif // DEBUG
#include "opencv2/highgui/highgui_c.h"
#include "opencv2/highgui/highgui.hpp"
using namespace cv;
extern "C" {
//
// VideoCapture::VideoCapture()
//
JNIEXPORT jlong JNICALL Java_org_opencv_VideoCapture_n_1VideoCapture__
(JNIEnv* env, jclass cls)
{
try {
#ifdef DEBUG
LOGD("highgui::VideoCapture_n_1VideoCapture__()");
#endif // DEBUG
VideoCapture* _retval_ = new VideoCapture( );
return (jlong) _retval_;
} catch(cv::Exception e) {
#ifdef DEBUG
LOGD("highgui::VideoCapture_n_1VideoCapture__() catched cv::Exception: %s", e.what());
#endif // DEBUG
jclass je = env->FindClass("org/opencv/CvException");
if(!je) je = env->FindClass("java/lang/Exception");
env->ThrowNew(je, e.what());
return 0;
} catch (...) {
#ifdef DEBUG
LOGD("highgui::VideoCapture_n_1VideoCapture__() catched unknown exception (...)");
#endif // DEBUG
jclass je = env->FindClass("java/lang/Exception");
env->ThrowNew(je, "Unknown exception in JNI code {highgui::VideoCapture_n_1VideoCapture__()}");
return 0;
}
}
//
// VideoCapture::VideoCapture(int device)
//
JNIEXPORT jlong JNICALL Java_org_opencv_VideoCapture_n_1VideoCapture__I
(JNIEnv* env, jclass cls, jint device)
{
try {
#ifdef DEBUG
LOGD("highgui::VideoCapture_n_1VideoCapture__I()");
#endif // DEBUG
VideoCapture* _retval_ = new VideoCapture( device );
return (jlong) _retval_;
} catch(cv::Exception e) {
#ifdef DEBUG
LOGD("highgui::VideoCapture_n_1VideoCapture__I() catched cv::Exception: %s", e.what());
#endif // DEBUG
jclass je = env->FindClass("org/opencv/CvException");
if(!je) je = env->FindClass("java/lang/Exception");
env->ThrowNew(je, e.what());
return 0;
} catch (...) {
#ifdef DEBUG
LOGD("highgui::VideoCapture_n_1VideoCapture__I() catched unknown exception (...)");
#endif // DEBUG
jclass je = env->FindClass("java/lang/Exception");
env->ThrowNew(je, "Unknown exception in JNI code {highgui::VideoCapture_n_1VideoCapture__I()}");
return 0;
}
}
//
// double VideoCapture::get(int propId)
//
JNIEXPORT jdouble JNICALL Java_org_opencv_VideoCapture_n_1get
(JNIEnv* env, jclass cls, jlong self, jint propId)
{
try {
#ifdef DEBUG
LOGD("highgui::VideoCapture_n_1get()");
#endif // DEBUG
VideoCapture* me = (VideoCapture*) self; //TODO: check for NULL
double _retval_ = me->get( propId );
return _retval_;
} catch(cv::Exception e) {
#ifdef DEBUG
LOGD("highgui::VideoCapture_n_1get() catched cv::Exception: %s", e.what());
#endif // DEBUG
jclass je = env->FindClass("org/opencv/CvException");
if(!je) je = env->FindClass("java/lang/Exception");
env->ThrowNew(je, e.what());
return 0;
} catch (...) {
#ifdef DEBUG
LOGD("highgui::VideoCapture_n_1get() catched unknown exception (...)");
#endif // DEBUG
jclass je = env->FindClass("java/lang/Exception");
env->ThrowNew(je, "Unknown exception in JNI code {highgui::VideoCapture_n_1get()}");
return 0;
}
}
//
// bool VideoCapture::grab()
//
JNIEXPORT jboolean JNICALL Java_org_opencv_VideoCapture_n_1grab
(JNIEnv* env, jclass cls, jlong self)
{
try {
#ifdef DEBUG
LOGD("highgui::VideoCapture_n_1grab()");
#endif // DEBUG
VideoCapture* me = (VideoCapture*) self; //TODO: check for NULL
bool _retval_ = me->grab( );
return _retval_;
} catch(cv::Exception e) {
#ifdef DEBUG
LOGD("highgui::VideoCapture_n_1grab() catched cv::Exception: %s", e.what());
#endif // DEBUG
jclass je = env->FindClass("org/opencv/CvException");
if(!je) je = env->FindClass("java/lang/Exception");
env->ThrowNew(je, e.what());
return 0;
} catch (...) {
#ifdef DEBUG
LOGD("highgui::VideoCapture_n_1grab() catched unknown exception (...)");
#endif // DEBUG
jclass je = env->FindClass("java/lang/Exception");
env->ThrowNew(je, "Unknown exception in JNI code {highgui::VideoCapture_n_1grab()}");
return 0;
}
}
//
// bool VideoCapture::isOpened()
//
JNIEXPORT jboolean JNICALL Java_org_opencv_VideoCapture_n_1isOpened
(JNIEnv* env, jclass cls, jlong self)
{
try {
#ifdef DEBUG
LOGD("highgui::VideoCapture_n_1isOpened()");
#endif // DEBUG
VideoCapture* me = (VideoCapture*) self; //TODO: check for NULL
bool _retval_ = me->isOpened( );
return _retval_;
} catch(cv::Exception e) {
#ifdef DEBUG
LOGD("highgui::VideoCapture_n_1isOpened() catched cv::Exception: %s", e.what());
#endif // DEBUG
jclass je = env->FindClass("org/opencv/CvException");
if(!je) je = env->FindClass("java/lang/Exception");
env->ThrowNew(je, e.what());
return 0;
} catch (...) {
#ifdef DEBUG
LOGD("highgui::VideoCapture_n_1isOpened() catched unknown exception (...)");
#endif // DEBUG
jclass je = env->FindClass("java/lang/Exception");
env->ThrowNew(je, "Unknown exception in JNI code {highgui::VideoCapture_n_1isOpened()}");
return 0;
}
}
//
// bool VideoCapture::open(int device)
//
JNIEXPORT jboolean JNICALL Java_org_opencv_VideoCapture_n_1open__JI
(JNIEnv* env, jclass cls, jlong self, jint device)
{
try {
#ifdef DEBUG
LOGD("highgui::VideoCapture_n_1open__JI()");
#endif // DEBUG
VideoCapture* me = (VideoCapture*) self; //TODO: check for NULL
bool _retval_ = me->open( device );
return _retval_;
} catch(cv::Exception e) {
#ifdef DEBUG
LOGD("highgui::VideoCapture_n_1open__JI() catched cv::Exception: %s", e.what());
#endif // DEBUG
jclass je = env->FindClass("org/opencv/CvException");
if(!je) je = env->FindClass("java/lang/Exception");
env->ThrowNew(je, e.what());
return 0;
} catch (...) {
#ifdef DEBUG
LOGD("highgui::VideoCapture_n_1open__JI() catched unknown exception (...)");
#endif // DEBUG
jclass je = env->FindClass("java/lang/Exception");
env->ThrowNew(je, "Unknown exception in JNI code {highgui::VideoCapture_n_1open__JI()}");
return 0;
}
}
//
// bool VideoCapture::read(Mat image)
//
JNIEXPORT jboolean JNICALL Java_org_opencv_VideoCapture_n_1read
(JNIEnv* env, jclass cls, jlong self, jlong image_nativeObj)
{
try {
#ifdef DEBUG
LOGD("highgui::VideoCapture_n_1read()");
#endif // DEBUG
VideoCapture* me = (VideoCapture*) self; //TODO: check for NULL
Mat& image = *((Mat*)image_nativeObj);
bool _retval_ = me->read( image );
return _retval_;
} catch(cv::Exception e) {
#ifdef DEBUG
LOGD("highgui::VideoCapture_n_1read() catched cv::Exception: %s", e.what());
#endif // DEBUG
jclass je = env->FindClass("org/opencv/CvException");
if(!je) je = env->FindClass("java/lang/Exception");
env->ThrowNew(je, e.what());
return 0;
} catch (...) {
#ifdef DEBUG
LOGD("highgui::VideoCapture_n_1read() catched unknown exception (...)");
#endif // DEBUG
jclass je = env->FindClass("java/lang/Exception");
env->ThrowNew(je, "Unknown exception in JNI code {highgui::VideoCapture_n_1read()}");
return 0;
}
}
//
// void VideoCapture::release()
//
JNIEXPORT void JNICALL Java_org_opencv_VideoCapture_n_1release
(JNIEnv* env, jclass cls, jlong self)
{
try {
#ifdef DEBUG
LOGD("highgui::VideoCapture_n_1release()");
#endif // DEBUG
VideoCapture* me = (VideoCapture*) self; //TODO: check for NULL
me->release( );
return;
} catch(cv::Exception e) {
#ifdef DEBUG
LOGD("highgui::VideoCapture_n_1release() catched cv::Exception: %s", e.what());
#endif // DEBUG
jclass je = env->FindClass("org/opencv/CvException");
if(!je) je = env->FindClass("java/lang/Exception");
env->ThrowNew(je, e.what());
return;
} catch (...) {
#ifdef DEBUG
LOGD("highgui::VideoCapture_n_1release() catched unknown exception (...)");
#endif // DEBUG
jclass je = env->FindClass("java/lang/Exception");
env->ThrowNew(je, "Unknown exception in JNI code {highgui::VideoCapture_n_1release()}");
return;
}
}
//
// bool VideoCapture::retrieve(Mat image, int channel = 0)
//
JNIEXPORT jboolean JNICALL Java_org_opencv_VideoCapture_n_1retrieve__JJI
(JNIEnv* env, jclass cls, jlong self, jlong image_nativeObj, jint channel)
{
try {
#ifdef DEBUG
LOGD("highgui::VideoCapture_n_1retrieve__JJI()");
#endif // DEBUG
VideoCapture* me = (VideoCapture*) self; //TODO: check for NULL
Mat& image = *((Mat*)image_nativeObj);
bool _retval_ = me->retrieve( image, channel );
return _retval_;
} catch(cv::Exception e) {
#ifdef DEBUG
LOGD("highgui::VideoCapture_n_1retrieve__JJI() catched cv::Exception: %s", e.what());
#endif // DEBUG
jclass je = env->FindClass("org/opencv/CvException");
if(!je) je = env->FindClass("java/lang/Exception");
env->ThrowNew(je, e.what());
return 0;
} catch (...) {
#ifdef DEBUG
LOGD("highgui::VideoCapture_n_1retrieve__JJI() catched unknown exception (...)");
#endif // DEBUG
jclass je = env->FindClass("java/lang/Exception");
env->ThrowNew(je, "Unknown exception in JNI code {highgui::VideoCapture_n_1retrieve__JJI()}");
return 0;
}
}
JNIEXPORT jboolean JNICALL Java_org_opencv_VideoCapture_n_1retrieve__JJ
(JNIEnv* env, jclass cls, jlong self, jlong image_nativeObj)
{
try {
#ifdef DEBUG
LOGD("highgui::VideoCapture_n_1retrieve__JJ()");
#endif // DEBUG
VideoCapture* me = (VideoCapture*) self; //TODO: check for NULL
Mat& image = *((Mat*)image_nativeObj);
bool _retval_ = me->retrieve( image );
return _retval_;
} catch(cv::Exception e) {
#ifdef DEBUG
LOGD("highgui::VideoCapture_n_1retrieve__JJ() catched cv::Exception: %s", e.what());
#endif // DEBUG
jclass je = env->FindClass("org/opencv/CvException");
if(!je) je = env->FindClass("java/lang/Exception");
env->ThrowNew(je, e.what());
return 0;
} catch (...) {
#ifdef DEBUG
LOGD("highgui::VideoCapture_n_1retrieve__JJ() catched unknown exception (...)");
#endif // DEBUG
jclass je = env->FindClass("java/lang/Exception");
env->ThrowNew(je, "Unknown exception in JNI code {highgui::VideoCapture_n_1retrieve__JJ()}");
return 0;
}
}
//
// bool VideoCapture::set(int propId, double value)
//
JNIEXPORT jboolean JNICALL Java_org_opencv_VideoCapture_n_1set
(JNIEnv* env, jclass cls, jlong self, jint propId, jdouble value)
{
try {
#ifdef DEBUG
LOGD("highgui::VideoCapture_n_1set()");
#endif // DEBUG
VideoCapture* me = (VideoCapture*) self; //TODO: check for NULL
bool _retval_ = me->set( propId, value );
return _retval_;
} catch(cv::Exception e) {
#ifdef DEBUG
LOGD("highgui::VideoCapture_n_1set() catched cv::Exception: %s", e.what());
#endif // DEBUG
jclass je = env->FindClass("org/opencv/CvException");
if(!je) je = env->FindClass("java/lang/Exception");
env->ThrowNew(je, e.what());
return 0;
} catch (...) {
#ifdef DEBUG
LOGD("highgui::VideoCapture_n_1set() catched unknown exception (...)");
#endif // DEBUG
jclass je = env->FindClass("java/lang/Exception");
env->ThrowNew(je, "Unknown exception in JNI code {highgui::VideoCapture_n_1set()}");
return 0;
}
}
JNIEXPORT jstring JNICALL Java_org_opencv_VideoCapture_n_1getSupportedPreviewSizes
(JNIEnv *env, jclass cls, jlong self)
{
try {
#ifdef DEBUG
LOGD("highgui::VideoCapture_n_1set()");
#endif // DEBUG
VideoCapture* me = (VideoCapture*) self; //TODO: check for NULL
double addr = me->get(CV_CAP_PROP_SUPPORTED_PREVIEW_SIZES_STRING);
char* result = *((char**)&addr);
return env->NewStringUTF(result);
} catch(cv::Exception e) {
#ifdef DEBUG
LOGD("highgui::VideoCapture_n_1getSupportedPreviewSizes() catched cv::Exception: %s", e.what());
#endif // DEBUG
jclass je = env->FindClass("org/opencv/CvException");
if(!je) je = env->FindClass("java/lang/Exception");
env->ThrowNew(je, e.what());
return env->NewStringUTF("");
} catch (...) {
#ifdef DEBUG
LOGD("highgui::VideoCapture_n_1getSupportedPreviewSizes() catched unknown exception (...)");
#endif // DEBUG
jclass je = env->FindClass("java/lang/Exception");
env->ThrowNew(je, "Unknown exception in JNI code {highgui::VideoCapture_n_1getSupportedPreviewSizes()}");
return env->NewStringUTF("");
}
}
//
// native support for java finalize()
// static void VideoCapture::n_delete( __int64 self )
//
JNIEXPORT void JNICALL Java_org_opencv_VideoCapture_n_1delete
(JNIEnv* env, jclass cls, jlong self)
{
delete (VideoCapture*) self;
}
} // extern "C"

229
modules/java/src/java/VideoCapture.java Normal file
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@ -0,0 +1,229 @@
package org.opencv;
import java.util.List;
import java.util.LinkedList;
// C++: class VideoCapture
//javadoc: VideoCapture
public class VideoCapture {
protected final long nativeObj;
protected VideoCapture(long addr) { nativeObj = addr; }
//
// C++: VideoCapture::VideoCapture()
//
//javadoc: VideoCapture::VideoCapture()
public VideoCapture()
{
nativeObj = n_VideoCapture();
return;
}
//
// C++: VideoCapture::VideoCapture(int device)
//
//javadoc: VideoCapture::VideoCapture(device)
public VideoCapture(int device)
{
nativeObj = n_VideoCapture(device);
return;
}
//
// C++: double VideoCapture::get(int propId)
//
//javadoc: VideoCapture::get(propId)
public double get(int propId)
{
double retVal = n_get(nativeObj, propId);
return retVal;
}
public List<Size> getSupportedPreviewSizes()
{
String[] sizes_str = n_getSupportedPreviewSizes(nativeObj).split(",");
List<Size> sizes = new LinkedList<Size>();
for(String str : sizes_str){
String[] wh = str.split("x");
sizes.add(new Size(Double.parseDouble(wh[0]), Double.parseDouble(wh[1])));
}
return sizes;
}
//
// C++: bool VideoCapture::grab()
//
//javadoc: VideoCapture::grab()
public boolean grab()
{
boolean retVal = n_grab(nativeObj);
return retVal;
}
//
// C++: bool VideoCapture::isOpened()
//
//javadoc: VideoCapture::isOpened()
public boolean isOpened()
{
boolean retVal = n_isOpened(nativeObj);
return retVal;
}
//
// C++: bool VideoCapture::open(int device)
//
//javadoc: VideoCapture::open(device)
public boolean open(int device)
{
boolean retVal = n_open(nativeObj, device);
return retVal;
}
//
// C++: bool VideoCapture::read(Mat image)
//
//javadoc: VideoCapture::read(image)
public boolean read(Mat image)
{
boolean retVal = n_read(nativeObj, image.nativeObj);
return retVal;
}
//
// C++: void VideoCapture::release()
//
//javadoc: VideoCapture::release()
public void release()
{
n_release(nativeObj);
return;
}
//
// C++: bool VideoCapture::retrieve(Mat image, int channel = 0)
//
//javadoc: VideoCapture::retrieve(image, channel)
public boolean retrieve(Mat image, int channel)
{
boolean retVal = n_retrieve(nativeObj, image.nativeObj, channel);
return retVal;
}
//javadoc: VideoCapture::retrieve(image)
public boolean retrieve(Mat image)
{
boolean retVal = n_retrieve(nativeObj, image.nativeObj);
return retVal;
}
//
// C++: bool VideoCapture::set(int propId, double value)
//
//javadoc: VideoCapture::set(propId, value)
public boolean set(int propId, double value)
{
boolean retVal = n_set(nativeObj, propId, value);
return retVal;
}
@Override
protected void finalize() throws Throwable {
n_delete(nativeObj);
super.finalize();
}
// native stuff
static { System.loadLibrary("opencv_java"); }
// C++: VideoCapture::VideoCapture()
private static native long n_VideoCapture();
// C++: VideoCapture::VideoCapture(string filename)
private static native long n_VideoCapture(java.lang.String filename);
// C++: VideoCapture::VideoCapture(int device)
private static native long n_VideoCapture(int device);
// C++: double VideoCapture::get(int propId)
private static native double n_get(long nativeObj, int propId);
// C++: bool VideoCapture::grab()
private static native boolean n_grab(long nativeObj);
// C++: bool VideoCapture::isOpened()
private static native boolean n_isOpened(long nativeObj);
// C++: bool VideoCapture::open(string filename)
private static native boolean n_open(long nativeObj, java.lang.String filename);
// C++: bool VideoCapture::open(int device)
private static native boolean n_open(long nativeObj, int device);
// C++: bool VideoCapture::read(Mat image)
private static native boolean n_read(long nativeObj, long image_nativeObj);
// C++: void VideoCapture::release()
private static native void n_release(long nativeObj);
// C++: bool VideoCapture::retrieve(Mat image, int channel = 0)
private static native boolean n_retrieve(long nativeObj, long image_nativeObj, int channel);
private static native boolean n_retrieve(long nativeObj, long image_nativeObj);
// C++: bool VideoCapture::set(int propId, double value)
private static native boolean n_set(long nativeObj, int propId, double value);
private static native String n_getSupportedPreviewSizes(long nativeObj);
// native support for java finalize()
private static native void n_delete(long nativeObj);
}

4
samples/android/0-base/AndroidManifest.xml
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@ -12,7 +12,9 @@
<application android:label="@string/app_name" android:icon="@drawable/icon">
<activity android:name="Sample0Base"
android:label="@string/app_name">
android:label="@string/app_name"
android:screenOrientation="landscape"
android:configChanges="keyboardHidden|orientation">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />

4
samples/android/1-java/AndroidManifest.xml
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@ -12,7 +12,9 @@
<application android:label="@string/app_name" android:icon="@drawable/icon">
<activity android:name="Sample1Java"
android:label="@string/app_name">
android:label="@string/app_name"
android:screenOrientation="landscape"
android:configChanges="keyboardHidden|orientation">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />

4
samples/android/2-native/AndroidManifest.xml
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@ -12,7 +12,9 @@
<application android:label="@string/app_name" android:icon="@drawable/icon">
<activity android:name="Sample2Native"
android:label="@string/app_name">
android:label="@string/app_name"
android:screenOrientation="landscape"
android:configChanges="keyboardHidden|orientation">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />

8
samples/android/3-nativecamera/.classpath Normal file
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@ -0,0 +1,8 @@
<?xml version="1.0" encoding="UTF-8"?>
<classpath>
<classpathentry kind="src" path="src"/>
<classpathentry kind="src" path="gen"/>
<classpathentry kind="con" path="com.android.ide.eclipse.adt.ANDROID_FRAMEWORK"/>
<classpathentry kind="src" path="opencv2.3.1_src"/>
<classpathentry kind="output" path="bin"/>
</classpath>

40
samples/android/3-nativecamera/.project Normal file
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@ -0,0 +1,40 @@
<?xml version="1.0" encoding="UTF-8"?>
<projectDescription>
<name>Sample 3 Native Camera</name>
<comment></comment>
<projects>
</projects>
<buildSpec>
<buildCommand>
<name>com.android.ide.eclipse.adt.ResourceManagerBuilder</name>
<arguments>
</arguments>
</buildCommand>
<buildCommand>
<name>com.android.ide.eclipse.adt.PreCompilerBuilder</name>
<arguments>
</arguments>
</buildCommand>
<buildCommand>
<name>org.eclipse.jdt.core.javabuilder</name>
<arguments>
</arguments>
</buildCommand>
<buildCommand>
<name>com.android.ide.eclipse.adt.ApkBuilder</name>
<arguments>
</arguments>
</buildCommand>
</buildSpec>
<natures>
<nature>com.android.ide.eclipse.adt.AndroidNature</nature>
<nature>org.eclipse.jdt.core.javanature</nature>
</natures>
<linkedResources>
<link>
<name>opencv2.3.1_src</name>
<type>2</type>
<locationURI>_android_opencv2_3_1_d2471b5d/src</locationURI>
</link>
</linkedResources>
</projectDescription>

5
samples/android/3-nativecamera/.settings/org.eclipse.jdt.core.prefs Normal file
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@ -0,0 +1,5 @@
#Wed Jun 29 04:36:40 MSD 2011
eclipse.preferences.version=1
org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.5
org.eclipse.jdt.core.compiler.compliance=1.5
org.eclipse.jdt.core.compiler.source=1.5

31
samples/android/3-nativecamera/AndroidManifest.xml Normal file
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@ -0,0 +1,31 @@
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="org.opencv.samples.s3"
android:versionCode="1"
android:versionName="1.0">
<supports-screens android:resizeable="true"
android:smallScreens="true"
android:normalScreens="true"
android:largeScreens="true"
android:anyDensity="true" />
<application android:label="@string/app_name" android:icon="@drawable/icon">
<activity android:name="Sample3NativeCamera"
android:label="@string/app_name"
android:screenOrientation="landscape"
android:configChanges="keyboardHidden|orientation">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
<uses-sdk android:minSdkVersion="8" />
<uses-permission android:name="android.permission.CAMERA"/>
<uses-feature android:name="android.hardware.camera" />
<uses-feature android:name="android.hardware.camera.autofocus" />
</manifest>

3
samples/android/3-nativecamera/default.properties Normal file
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android.library.reference.1=../../../android/build
# Project target.
target=android-8

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samples/android/3-nativecamera/res/values/strings.xml Normal file
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<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="app_name">Sample 3: Native Camera</string>
</resources>

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samples/android/3-nativecamera/src/org/opencv/samples/s3/Sample3NativeCamera.java Normal file
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package org.opencv.samples.s3;
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.Window;
public class Sample3NativeCamera extends Activity {
private static final String TAG = "Sample::Activity";
public static final int VIEW_MODE_RGBA = 0;
public static final int VIEW_MODE_GRAY = 1;
public static final int VIEW_MODE_CANNY = 2;
public static final int VIEW_MODE_SOBEL = 3;
public static final int VIEW_MODE_BLUR = 4;
private MenuItem mItemPreviewRGBA;
private MenuItem mItemPreviewGray;
private MenuItem mItemPreviewCanny;
private MenuItem mItemPreviewSobel;
private MenuItem mItemPreviewBlur;
public static int viewMode = VIEW_MODE_RGBA;
public Sample3NativeCamera() {
Log.i(TAG, "Instantiated new " + this.getClass());
}
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
Log.i(TAG, "onCreate");
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(new Sample3View(this));
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
Log.i(TAG, "onCreateOptionsMenu");
mItemPreviewRGBA = menu.add("Preview RGBA");
mItemPreviewGray = menu.add("Preview GRAY");
mItemPreviewCanny = menu.add("Canny");
mItemPreviewSobel = menu.add("Sobel");
mItemPreviewBlur = menu.add("Blur");
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
Log.i(TAG, "Menu Item selected " + item);
if (item == mItemPreviewRGBA)
viewMode = VIEW_MODE_RGBA;
else if (item == mItemPreviewGray)
viewMode = VIEW_MODE_GRAY;
else if (item == mItemPreviewCanny)
viewMode = VIEW_MODE_CANNY;
else if (item == mItemPreviewSobel)
viewMode = VIEW_MODE_SOBEL;
else if (item == mItemPreviewBlur)
viewMode = VIEW_MODE_BLUR;
return true;
}
}

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samples/android/3-nativecamera/src/org/opencv/samples/s3/Sample3View.java Normal file
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package org.opencv.samples.s3;
import org.opencv.*;
import android.content.Context;
import android.graphics.Bitmap;
import android.view.SurfaceHolder;
class Sample3View extends SampleViewBase {
private Mat mRgba;
private Mat mGray;
private Mat mIntermediateMat;
public Sample3View(Context context) {
super(context);
}
@Override
public void surfaceChanged(SurfaceHolder _holder, int format, int width, int height) {
super.surfaceChanged(_holder, format, width, height);
synchronized (this) {
// initialize Mats before usage
mGray = new Mat();
mRgba = new Mat();
mIntermediateMat = new Mat();
}
}
@Override
protected Bitmap processFrame(VideoCapture capture) {
switch (Sample3NativeCamera.viewMode) {
case Sample3NativeCamera.VIEW_MODE_GRAY:
capture.retrieve(mGray, highgui.CV_CAP_ANDROID_GREY_FRAME);
imgproc.cvtColor(mGray, mRgba, imgproc.CV_GRAY2RGBA, 4);
break;
case Sample3NativeCamera.VIEW_MODE_RGBA:
capture.retrieve(mRgba, highgui.CV_CAP_ANDROID_COLOR_FRAME_RGBA);
core.putText(mRgba, "OpenCV + Android", new Point(10, 100), 3/* CV_FONT_HERSHEY_COMPLEX */, 2, new Scalar(255, 0, 0, 255), 3);
break;
case Sample3NativeCamera.VIEW_MODE_CANNY:
capture.retrieve(mGray, highgui.CV_CAP_ANDROID_GREY_FRAME);
imgproc.Canny(mGray, mIntermediateMat, 80, 100);
imgproc.cvtColor(mIntermediateMat, mRgba, imgproc.CV_GRAY2BGRA, 4);
break;
case Sample3NativeCamera.VIEW_MODE_SOBEL:
capture.retrieve(mGray, highgui.CV_CAP_ANDROID_GREY_FRAME);
imgproc.Sobel(mGray, mIntermediateMat, CvType.CV_8U, 1, 1);
core.convertScaleAbs(mIntermediateMat, mIntermediateMat, 8);
imgproc.cvtColor(mIntermediateMat, mRgba, imgproc.CV_GRAY2BGRA, 4);
break;
case Sample3NativeCamera.VIEW_MODE_BLUR:
capture.retrieve(mRgba, highgui.CV_CAP_ANDROID_COLOR_FRAME_RGBA);
imgproc.blur(mRgba, mRgba, new Size(15, 15));
break;
}
Bitmap bmp = Bitmap.createBitmap(mRgba.cols(), mRgba.rows(), Bitmap.Config.ARGB_8888);
if (android.MatToBitmap(mRgba, bmp))
return bmp;
bmp.recycle();
return null;
}
@Override
public void run() {
super.run();
synchronized (this) {
// Explicitly deallocate Mats
if (mRgba != null)
mRgba.dispose();
if (mGray != null)
mGray.dispose();
if (mIntermediateMat != null)
mIntermediateMat.dispose();
mRgba = null;
mGray = null;
mIntermediateMat = null;
}
}
}

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samples/android/3-nativecamera/src/org/opencv/samples/s3/SampleViewBase.java Normal file
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package org.opencv.samples.s3;
import java.util.List;
import org.opencv.*;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.util.Log;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
public abstract class SampleViewBase extends SurfaceView implements SurfaceHolder.Callback, Runnable {
private static final String TAG = "Sample::SurfaceView";
private SurfaceHolder mHolder;
private VideoCapture mCamera;
private boolean mThreadRun;
public SampleViewBase(Context context) {
super(context);
mHolder = getHolder();
mHolder.addCallback(this);
Log.i(TAG, "Instantiated new " + this.getClass());
}
public void surfaceChanged(SurfaceHolder _holder, int format, int width, int height) {
Log.i(TAG, "surfaceCreated");
if (mCamera != null && mCamera.isOpened()) {
Log.i(TAG, "before mCamera.getSupportedPreviewSizes()");
List<Size> sizes = mCamera.getSupportedPreviewSizes();
Log.i(TAG, "after mCamera.getSupportedPreviewSizes()");
int mFrameWidth = width;
int mFrameHeight = height;
// selecting optimal camera preview size
{
double minDiff = Double.MAX_VALUE;
for (Size size : sizes) {
if (Math.abs(size.height - height) < minDiff) {
mFrameWidth = (int) size.width;
mFrameHeight = (int) size.height;
minDiff = Math.abs(size.height - height);
}
}
}
mCamera.set(highgui.CV_CAP_PROP_FRAME_WIDTH, mFrameWidth);
mCamera.set(highgui.CV_CAP_PROP_FRAME_HEIGHT, mFrameHeight);
}
}
public void surfaceCreated(SurfaceHolder holder) {
Log.i(TAG, "surfaceCreated");
mCamera = new VideoCapture(highgui.CV_CAP_ANDROID);
if (mCamera.isOpened()) {
(new Thread(this)).start();
} else {
mCamera.release();
mCamera = null;
Log.e(TAG, "Failed to open native camera");
}
}
public void surfaceDestroyed(SurfaceHolder holder) {
Log.i(TAG, "surfaceDestroyed");
mThreadRun = false;
if (mCamera != null) {
synchronized (this) {
mCamera.release();
mCamera = null;
}
}
}
protected abstract Bitmap processFrame(VideoCapture capture);
public void run() {
mThreadRun = true;
Log.i(TAG, "Starting processing thread");
while (mThreadRun) {
Bitmap bmp = null;
if (!mCamera.grab()) {
Log.e(TAG, "mCamera.grab() failed");
break;
}
synchronized (this) {
bmp = processFrame(mCamera);
}
if (bmp != null) {
Canvas canvas = mHolder.lockCanvas();
if (canvas != null) {
canvas.drawBitmap(bmp, (canvas.getWidth() - bmp.getWidth()) / 2, (canvas.getHeight() - bmp.getHeight()) / 2, null);
mHolder.unlockCanvasAndPost(canvas);
}
bmp.recycle();
}
}
}
}

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samples/android/4-mixed/AndroidManifest.xml
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<application android:label="@string/app_name" android:icon="@drawable/icon">
<activity android:name="Sample4Mixed"
android:label="@string/app_name">
android:label="@string/app_name"
android:screenOrientation="landscape"
android:configChanges="keyboardHidden|orientation">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />