Native Camera和OpenGL ES的混合使用
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由于android各个版本中相机实现的差异很大，所以google并没有提供相机的原生api。网上在JNI处理Camera的Preview Data，大多是用SurfaceView来实能够处理将Camera的Preview传递到JNI然后在进行处理，这样导致一个问题就是如果再将处理完的数据再显示，就必须增加多一个SurfaceView或者ImageView控件，对系统资源消耗比较大，而且效率并不比Java块。
OpenCV 能够在JNI调用Camera，看起来是绕过了Java Camera API，通过Android 的本地框架，实现了原生Camera的调用。
在这里提供一个原生Camera与OpenGL使用的例子，原理是通过OpenCV调用Camera，并将Camera数据作为纹理给OpenGL渲染，并通过glSubTexSubImage2D来更新，为了保证OpenGL和OpenCV的同步（也就是OpenCV的每一帧同步到OpenGL的纹理中），使用了pthread的锁来进行控制. 感谢Github的原作者Mesai
Java Code
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package com.blogspot.mesai0;
import java.util.List;
import org.opencv.android.CameraBridgeViewBase.ListItemAccessor;
import org.opencv.android.NativeCameraView.OpenCvSizeAccessor;
import org.opencv.core.Size;
import org.opencv.highgui.Highgui;
import org.opencv.highgui.VideoCapture;
import android.app.Activity;
import android.opengl.GLSurfaceView;
import android.os.Bundle;
import android.view.Display;
public class CameraPreviewer extends Activity {
GLSurfaceView mView;
@Override protected void onCreate(Bundle icicle) {
super.onCreate(icicle);
Native.loadlibs();
VideoCapture mCamera = new VideoCapture(Highgui.CV_CAP_ANDROID);
java.util.List<Size> sizes = mCamera.getSupportedPreviewSizes();
mCamera.release();
mView = new GLSurfaceView(getApplication()){
@Override
public void onPause() {
// TODO Auto-generated method stub
super.onPause();
Native.releaseCamera();
}
};
Size size = calculateCameraFrameSize(sizes,new OpenCvSizeAccessor());
mView.setRenderer(new CameraRenderer(this,size));
setContentView(mView);
}
protected Size calculateCameraFrameSize(List supportedSizes,
ListItemAccessor accessor) {
int calcWidth = Integer.MAX_VALUE;
int calcHeight = Integer.MAX_VALUE;
Display display = getWindowManager().getDefaultDisplay();
int maxAllowedWidth = 1024;
int maxAllowedHeight = 1024;
for (Object size : supportedSizes) {
int width = accessor.getWidth(size);
int height = accessor.getHeight(size);
if (width <= maxAllowedWidth && height <= maxAllowedHeight) {
if ( width <= calcWidth
&& width>=(maxAllowedWidth/2)
&&(display.getWidth()%width==0||display.getHeight()%height==0)) {
calcWidth = (int) width;
calcHeight = (int) height;
}
}
}
return new Size(calcWidth, calcHeight);
}
@Override protected void onPause() {
super.onPause();
mView.onPause();
}
@Override protected void onResume() {
super.onResume();
mView.onResume();
}
}
import java.util.List;
import org.opencv.android.CameraBridgeViewBase.ListItemAccessor;
import org.opencv.android.NativeCameraView.OpenCvSizeAccessor;
import org.opencv.core.Size;
import org.opencv.highgui.Highgui;
import org.opencv.highgui.VideoCapture;
import android.app.Activity;
import android.opengl.GLSurfaceView;
import android.os.Bundle;
import android.view.Display;
public class CameraPreviewer extends Activity {
GLSurfaceView mView;
@Override protected void onCreate(Bundle icicle) {
super.onCreate(icicle);
Native.loadlibs();
VideoCapture mCamera = new VideoCapture(Highgui.CV_CAP_ANDROID);
java.util.List<Size> sizes = mCamera.getSupportedPreviewSizes();
mCamera.release();
mView = new GLSurfaceView(getApplication()){
@Override
public void onPause() {
// TODO Auto-generated method stub
super.onPause();
Native.releaseCamera();
}
};
Size size = calculateCameraFrameSize(sizes,new OpenCvSizeAccessor());
mView.setRenderer(new CameraRenderer(this,size));
setContentView(mView);
}
protected Size calculateCameraFrameSize(List supportedSizes,
ListItemAccessor accessor) {
int calcWidth = Integer.MAX_VALUE;
int calcHeight = Integer.MAX_VALUE;
Display display = getWindowManager().getDefaultDisplay();
int maxAllowedWidth = 1024;
int maxAllowedHeight = 1024;
for (Object size : supportedSizes) {
int width = accessor.getWidth(size);
int height = accessor.getHeight(size);
if (width <= maxAllowedWidth && height <= maxAllowedHeight) {
if ( width <= calcWidth
&& width>=(maxAllowedWidth/2)
&&(display.getWidth()%width==0||display.getHeight()%height==0)) {
calcWidth = (int) width;
calcHeight = (int) height;
}
}
}
return new Size(calcWidth, calcHeight);
}
@Override protected void onPause() {
super.onPause();
mView.onPause();
}
@Override protected void onResume() {
super.onResume();
mView.onResume();
}
}
Java Code
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package com.blogspot.mesai0;
import javax.microedition.khronos.egl.EGLConfig;
import javax.microedition.khronos.opengles.GL10;
import org.opencv.core.Size;
import android.content.Context;
import android.opengl.GLSurfaceView.Renderer;
public class CameraRenderer implements Renderer {
private Size size;
private Context context;
public CameraRenderer(Context c,Size size) {
super();
context = c;
this.size = size;
}
public void onSurfaceCreated(GL10 gl, EGLConfig config) {
Thread.currentThread().setPriority(Thread.MAX_PRIORITY);
Native.initCamera((int)size.width,(int)size.height);
}
public void onDrawFrame(GL10 gl) {
Native.renderBackground();
}
public void onSurfaceChanged(GL10 gl, int width, int height) {
Native.surfaceChanged(width,height,context.getResources().getConfiguration().orientation);
}
}
import javax.microedition.khronos.egl.EGLConfig;
import javax.microedition.khronos.opengles.GL10;
import org.opencv.core.Size;
import android.content.Context;
import android.opengl.GLSurfaceView.Renderer;
public class CameraRenderer implements Renderer {
private Size size;
private Context context;
public CameraRenderer(Context c,Size size) {
super();
context = c;
this.size = size;
}
public void onSurfaceCreated(GL10 gl, EGLConfig config) {
Thread.currentThread().setPriority(Thread.MAX_PRIORITY);
Native.initCamera((int)size.width,(int)size.height);
}
public void onDrawFrame(GL10 gl) {
Native.renderBackground();
}
public void onSurfaceChanged(GL10 gl, int width, int height) {
Native.surfaceChanged(width,height,context.getResources().getConfiguration().orientation);
}
}
Java Code
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package com.blogspot.mesai0;
public class Native {
public static void loadlibs() {
System.loadLibrary("opencv_java");
System.loadLibrary("NativeCamera");
}
public static native void initCamera(int width, int height);
public static native void releaseCamera();
public static native void renderBackground();
public static native void surfaceChanged(int width, int height,
int orientation);
}
public class Native {
public static void loadlibs() {
System.loadLibrary("opencv_java");
System.loadLibrary("NativeCamera");
}
public static native void initCamera(int width, int height);
public static native void releaseCamera();
public static native void renderBackground();
public static native void surfaceChanged(int width, int height,
int orientation);
}
C++ Code
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#include <jni.h>
#include <GLES/gl.h>
#include <GLES/glext.h>
#include <android/log.h>
#include <pthread.h>
#include <time.h>
#include <Math.h>
#include <opencv/cv.h>
#include <opencv2/highgui/highgui.hpp>
// Utility for logging:
#define LOG_TAG "CAMERA_RENDERER"
#define LOG(...) __android_log_print(ANDROID_LOG_INFO, LOG_TAG, __VA_ARGS__)
GLuint texture;
cv::VideoCapture capture;
cv::Mat buffer[30];
cv::Mat rgbFrame;
cv::Mat inframe;
cv::Mat outframe;
int bufferIndex;
int rgbIndex;
int frameWidth;
int frameHeight;
int screenWidth;
int screenHeight;
int orientation;
pthread_mutex_t FGmutex;
pthread_t frameGrabber;
pthread_attr_t attr;
struct sched_param param;
GLfloat vertices[] = { -1.0f, -1.0f, 0.0f, // V1 - bottom left
-1.0f, 1.0f, 0.0f, // V2 - top left
1.0f, -1.0f, 0.0f, // V3 - bottom right
1.0f, 1.0f, 0.0f // V4 - top right
};
GLfloat textures[8];
extern "C" {
void drawBackground();
void createTexture();
void destroyTexture();
void *frameRetriever(void*);
JNIEXPORT void JNICALL Java_com_blogspot_mesai0_Native_initCamera(JNIEnv*,
jobject, jint width, jint height) {
LOG("Camera Created");
capture.open(CV_CAP_ANDROID + 0);
capture.set(CV_CAP_PROP_FRAME_WIDTH, width);
capture.set(CV_CAP_PROP_FRAME_HEIGHT, height);
frameWidth = width;
frameHeight = height;
LOG("frameWidth = %d", frameWidth);
LOG("frameHeight = %d", frameHeight);
glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
glShadeModel(GL_SMOOTH);
glClearDepthf(1.0f);
glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
pthread_attr_t attr;
pthread_attr_init(&attr);
pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
pthread_attr_setschedpolicy(&attr, SCHED_FIFO);
memset(¶m, 0, sizeof(param));
param.sched_priority = 100;
pthread_attr_setschedparam(&attr, ¶m);
pthread_create(&frameGrabber, &attr, frameRetriever, NULL);
pthread_attr_destroy(&attr);
}
JNIEXPORT void JNICALL Java_com_blogspot_mesai0_Native_surfaceChanged(JNIEnv*,
jobject, jint width, jint height, jint orien) {
LOG("Surface Changed");
glViewport(0, 0, width, height);
if (orien == 1) {
screenWidth = width;
screenHeight = height;
orientation = 1;
} else {
screenWidth = height;
screenHeight = width;
orientation = 2;
}
LOG("screenWidth = %d", screenWidth);
LOG("screenHeight = %d", screenHeight);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
float aspect = screenWidth / screenHeight;
float bt = (float) tan(45 / 2);
float lr = bt * aspect;
glFrustumf(-lr * 0.1f, lr * 0.1f, -bt * 0.1f, bt * 0.1f, 0.1f, 100.0f);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glEnable(GL_TEXTURE_2D);
glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
glClearDepthf(1.0f);
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LEQUAL);
createTexture();
}
JNIEXPORT void JNICALL Java_com_blogspot_mesai0_Native_releaseCamera(JNIEnv*,
jobject) {
LOG("Camera Released");
capture.release();
destroyTexture();
}
void createTexture() {
textures[0] = ((1024.0f - frameWidth * 1.0f) / 2.0f) / 1024.0f;
textures[1] = ((1024.0f - frameHeight * 1.0f) / 2.0f) / 1024.0f
+ (frameHeight * 1.0f / 1024.0f);
textures[2] = ((1024.0f - frameWidth * 1.0f) / 2.0f) / 1024.0f
+ (frameWidth * 1.0f / 1024.0f);
textures[3] = ((1024.0f - frameHeight * 1.0f) / 2.0f) / 1024.0f
+ (frameHeight * 1.0f / 1024.0f);
textures[4] = ((1024.0f - frameWidth * 1.0f) / 2.0f) / 1024.0f;
textures[5] = ((1024.0f - frameHeight * 1.0f) / 2.0f) / 1024.0f;
textures[6] = ((1024.0f - frameWidth * 1.0f) / 2.0f) / 1024.0f
+ (frameWidth * 1.0f / 1024.0f);
textures[7] = ((1024.0f - frameHeight * 1.0f) / 2.0f) / 1024.0f;
LOG("Texture Created");
glGenTextures(1, &texture);
glBindTexture(GL_TEXTURE_2D, texture);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1024, 1024, 0, GL_RGB,
GL_UNSIGNED_SHORT_5_6_5, NULL);
glBindTexture(GL_TEXTURE_2D, 0);
}
void destroyTexture() {
LOG("Texture destroyed");
glDeleteTextures(1, &texture);
}
JNIEXPORT void JNICALL Java_com_blogspot_mesai0_Native_renderBackground(JNIEnv*,
jobject) {
drawBackground();
}
void drawBackground() {
glClear(GL_COLOR_BUFFER_BIT);
glBindTexture(GL_TEXTURE_2D, texture);
if (bufferIndex > 0) {
pthread_mutex_lock(&FGmutex);
cvtColor(buffer[(bufferIndex - 1) % 30], outframe, CV_BGR2BGR565);
pthread_mutex_unlock(&FGmutex);
cv::flip(outframe, rgbFrame, 1);
if (texture != 0)
glTexSubImage2D(GL_TEXTURE_2D, 0, (1024 - frameWidth) / 2,
(1024 - frameHeight) / 2, frameWidth, frameHeight, GL_RGB,
GL_UNSIGNED_SHORT_5_6_5, rgbFrame.ptr());
}
glEnableClientState(GL_VERTEX_ARRAY);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glLoadIdentity();
if (orientation != 1) {
glRotatef(90, 0, 0, 1);
}
// Set the face rotation
glFrontFace(GL_CW);
// Point to our vertex buffer
glVertexPointer(3, GL_FLOAT, 0, vertices);
glTexCoordPointer(2, GL_FLOAT, 0, textures);
// Draw the vertices as triangle strip
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
//Disable the client state before leaving
glDisableClientState(GL_VERTEX_ARRAY);
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
}
void *frameRetriever(void*) {
while (capture.isOpened()) {
capture.read(inframe);
if (!inframe.empty()) {
pthread_mutex_lock(&FGmutex);
inframe.copyTo(buffer[(bufferIndex++) % 30]);
pthread_mutex_unlock(&FGmutex);
}
}
LOG("Camera Closed");
pthread_exit(NULL);
}
}
#include <GLES/gl.h>
#include <GLES/glext.h>
#include <android/log.h>
#include <pthread.h>
#include <time.h>
#include <Math.h>
#include <opencv/cv.h>
#include <opencv2/highgui/highgui.hpp>
// Utility for logging:
#define LOG_TAG "CAMERA_RENDERER"
#define LOG(...) __android_log_print(ANDROID_LOG_INFO, LOG_TAG, __VA_ARGS__)
GLuint texture;
cv::VideoCapture capture;
cv::Mat buffer[30];
cv::Mat rgbFrame;
cv::Mat inframe;
cv::Mat outframe;
int bufferIndex;
int rgbIndex;
int frameWidth;
int frameHeight;
int screenWidth;
int screenHeight;
int orientation;
pthread_mutex_t FGmutex;
pthread_t frameGrabber;
pthread_attr_t attr;
struct sched_param param;
GLfloat vertices[] = { -1.0f, -1.0f, 0.0f, // V1 - bottom left
-1.0f, 1.0f, 0.0f, // V2 - top left
1.0f, -1.0f, 0.0f, // V3 - bottom right
1.0f, 1.0f, 0.0f // V4 - top right
};
GLfloat textures[8];
extern "C" {
void drawBackground();
void createTexture();
void destroyTexture();
void *frameRetriever(void*);
JNIEXPORT void JNICALL Java_com_blogspot_mesai0_Native_initCamera(JNIEnv*,
jobject, jint width, jint height) {
LOG("Camera Created");
capture.open(CV_CAP_ANDROID + 0);
capture.set(CV_CAP_PROP_FRAME_WIDTH, width);
capture.set(CV_CAP_PROP_FRAME_HEIGHT, height);
frameWidth = width;
frameHeight = height;
LOG("frameWidth = %d", frameWidth);
LOG("frameHeight = %d", frameHeight);
glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
glShadeModel(GL_SMOOTH);
glClearDepthf(1.0f);
glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
pthread_attr_t attr;
pthread_attr_init(&attr);
pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
pthread_attr_setschedpolicy(&attr, SCHED_FIFO);
memset(¶m, 0, sizeof(param));
param.sched_priority = 100;
pthread_attr_setschedparam(&attr, ¶m);
pthread_create(&frameGrabber, &attr, frameRetriever, NULL);
pthread_attr_destroy(&attr);
}
JNIEXPORT void JNICALL Java_com_blogspot_mesai0_Native_surfaceChanged(JNIEnv*,
jobject, jint width, jint height, jint orien) {
LOG("Surface Changed");
glViewport(0, 0, width, height);
if (orien == 1) {
screenWidth = width;
screenHeight = height;
orientation = 1;
} else {
screenWidth = height;
screenHeight = width;
orientation = 2;
}
LOG("screenWidth = %d", screenWidth);
LOG("screenHeight = %d", screenHeight);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
float aspect = screenWidth / screenHeight;
float bt = (float) tan(45 / 2);
float lr = bt * aspect;
glFrustumf(-lr * 0.1f, lr * 0.1f, -bt * 0.1f, bt * 0.1f, 0.1f, 100.0f);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glEnable(GL_TEXTURE_2D);
glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
glClearDepthf(1.0f);
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LEQUAL);
createTexture();
}
JNIEXPORT void JNICALL Java_com_blogspot_mesai0_Native_releaseCamera(JNIEnv*,
jobject) {
LOG("Camera Released");
capture.release();
destroyTexture();
}
void createTexture() {
textures[0] = ((1024.0f - frameWidth * 1.0f) / 2.0f) / 1024.0f;
textures[1] = ((1024.0f - frameHeight * 1.0f) / 2.0f) / 1024.0f
+ (frameHeight * 1.0f / 1024.0f);
textures[2] = ((1024.0f - frameWidth * 1.0f) / 2.0f) / 1024.0f
+ (frameWidth * 1.0f / 1024.0f);
textures[3] = ((1024.0f - frameHeight * 1.0f) / 2.0f) / 1024.0f
+ (frameHeight * 1.0f / 1024.0f);
textures[4] = ((1024.0f - frameWidth * 1.0f) / 2.0f) / 1024.0f;
textures[5] = ((1024.0f - frameHeight * 1.0f) / 2.0f) / 1024.0f;
textures[6] = ((1024.0f - frameWidth * 1.0f) / 2.0f) / 1024.0f
+ (frameWidth * 1.0f / 1024.0f);
textures[7] = ((1024.0f - frameHeight * 1.0f) / 2.0f) / 1024.0f;
LOG("Texture Created");
glGenTextures(1, &texture);
glBindTexture(GL_TEXTURE_2D, texture);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1024, 1024, 0, GL_RGB,
GL_UNSIGNED_SHORT_5_6_5, NULL);
glBindTexture(GL_TEXTURE_2D, 0);
}
void destroyTexture() {
LOG("Texture destroyed");
glDeleteTextures(1, &texture);
}
JNIEXPORT void JNICALL Java_com_blogspot_mesai0_Native_renderBackground(JNIEnv*,
jobject) {
drawBackground();
}
void drawBackground() {
glClear(GL_COLOR_BUFFER_BIT);
glBindTexture(GL_TEXTURE_2D, texture);
if (bufferIndex > 0) {
pthread_mutex_lock(&FGmutex);
cvtColor(buffer[(bufferIndex - 1) % 30], outframe, CV_BGR2BGR565);
pthread_mutex_unlock(&FGmutex);
cv::flip(outframe, rgbFrame, 1);
if (texture != 0)
glTexSubImage2D(GL_TEXTURE_2D, 0, (1024 - frameWidth) / 2,
(1024 - frameHeight) / 2, frameWidth, frameHeight, GL_RGB,
GL_UNSIGNED_SHORT_5_6_5, rgbFrame.ptr());
}
glEnableClientState(GL_VERTEX_ARRAY);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glLoadIdentity();
if (orientation != 1) {
glRotatef(90, 0, 0, 1);
}
// Set the face rotation
glFrontFace(GL_CW);
// Point to our vertex buffer
glVertexPointer(3, GL_FLOAT, 0, vertices);
glTexCoordPointer(2, GL_FLOAT, 0, textures);
// Draw the vertices as triangle strip
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
//Disable the client state before leaving
glDisableClientState(GL_VERTEX_ARRAY);
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
}
void *frameRetriever(void*) {
while (capture.isOpened()) {
capture.read(inframe);
if (!inframe.empty()) {
pthread_mutex_lock(&FGmutex);
inframe.copyTo(buffer[(bufferIndex++) % 30]);
pthread_mutex_unlock(&FGmutex);
}
}
LOG("Camera Closed");
pthread_exit(NULL);
}
}
android.mk
C++ Code
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LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
LOCAL_MODULE := opencv-prebuilt
LOCAL_SRC_FILES = build/libs/$(TARGET_ARCH_ABI)/libopencv_java.so
include $(PREBUILT_SHARED_LIBRARY)
include $(CLEAR_VARS)
LOCAL_MODULE := camera1-prebuilt
LOCAL_SRC_FILES = build/libs/$(TARGET_ARCH_ABI)/libnative_camera_r4.2.0.so
include $(PREBUILT_SHARED_LIBRARY)
include $(CLEAR_VARS)
LOCAL_MODULE := camera2-prebuilt
LOCAL_SRC_FILES = build/libs/$(TARGET_ARCH_ABI)/libnative_camera_r4.1.1.so
include $(PREBUILT_SHARED_LIBRARY)
include $(CLEAR_VARS)
LOCAL_MODULE := camera3-prebuilt
LOCAL_SRC_FILES = build/libs/$(TARGET_ARCH_ABI)/libnative_camera_r4.0.3.so
include $(PREBUILT_SHARED_LIBRARY)
include $(CLEAR_VARS)
LOCAL_MODULE := camera4-prebuilt
LOCAL_SRC_FILES = build/libs/$(TARGET_ARCH_ABI)/libnative_camera_r4.0.0.so
include $(PREBUILT_SHARED_LIBRARY)
include $(CLEAR_VARS)
LOCAL_MODULE := camera5-prebuilt
LOCAL_SRC_FILES = build/libs/$(TARGET_ARCH_ABI)/libnative_camera_r3.0.1.so
include $(PREBUILT_SHARED_LIBRARY)
include $(CLEAR_VARS)
LOCAL_MODULE := camera6-prebuilt
LOCAL_SRC_FILES = build/libs/$(TARGET_ARCH_ABI)/libnative_camera_r2.3.3.so
include $(PREBUILT_SHARED_LIBRARY)
include $(CLEAR_VARS)
LOCAL_MODULE := camera7-prebuilt
LOCAL_SRC_FILES = build/libs/$(TARGET_ARCH_ABI)/libnative_camera_r2.2.0.so
include $(PREBUILT_SHARED_LIBRARY)
include $(CLEAR_VARS)
OPENGLES_LIB := -lGLESv1_CM
OPENGLES_DEF := -DUSE_OPENGL_ES_1_1
LOCAL_MODULE := NativeCamera
LOCAL_SHARED_LIBRARIES := opencv-prebuilt
LOCAL_SRC_FILES := CameraRenderer.cpp
LOCAL_LDLIBS += $(OPENGLES_LIB) -llog -ldl
include $(BUILD_SHARED_LIBRARY)
include $(CLEAR_VARS)
LOCAL_MODULE := opencv-prebuilt
LOCAL_SRC_FILES = build/libs/$(TARGET_ARCH_ABI)/libopencv_java.so
include $(PREBUILT_SHARED_LIBRARY)
include $(CLEAR_VARS)
LOCAL_MODULE := camera1-prebuilt
LOCAL_SRC_FILES = build/libs/$(TARGET_ARCH_ABI)/libnative_camera_r4.2.0.so
include $(PREBUILT_SHARED_LIBRARY)
include $(CLEAR_VARS)
LOCAL_MODULE := camera2-prebuilt
LOCAL_SRC_FILES = build/libs/$(TARGET_ARCH_ABI)/libnative_camera_r4.1.1.so
include $(PREBUILT_SHARED_LIBRARY)
include $(CLEAR_VARS)
LOCAL_MODULE := camera3-prebuilt
LOCAL_SRC_FILES = build/libs/$(TARGET_ARCH_ABI)/libnative_camera_r4.0.3.so
include $(PREBUILT_SHARED_LIBRARY)
include $(CLEAR_VARS)
LOCAL_MODULE := camera4-prebuilt
LOCAL_SRC_FILES = build/libs/$(TARGET_ARCH_ABI)/libnative_camera_r4.0.0.so
include $(PREBUILT_SHARED_LIBRARY)
include $(CLEAR_VARS)
LOCAL_MODULE := camera5-prebuilt
LOCAL_SRC_FILES = build/libs/$(TARGET_ARCH_ABI)/libnative_camera_r3.0.1.so
include $(PREBUILT_SHARED_LIBRARY)
include $(CLEAR_VARS)
LOCAL_MODULE := camera6-prebuilt
LOCAL_SRC_FILES = build/libs/$(TARGET_ARCH_ABI)/libnative_camera_r2.3.3.so
include $(PREBUILT_SHARED_LIBRARY)
include $(CLEAR_VARS)
LOCAL_MODULE := camera7-prebuilt
LOCAL_SRC_FILES = build/libs/$(TARGET_ARCH_ABI)/libnative_camera_r2.2.0.so
include $(PREBUILT_SHARED_LIBRARY)
include $(CLEAR_VARS)
OPENGLES_LIB := -lGLESv1_CM
OPENGLES_DEF := -DUSE_OPENGL_ES_1_1
LOCAL_MODULE := NativeCamera
LOCAL_SHARED_LIBRARIES := opencv-prebuilt
LOCAL_SRC_FILES := CameraRenderer.cpp
LOCAL_LDLIBS += $(OPENGLES_LIB) -llog -ldl
include $(BUILD_SHARED_LIBRARY)
application.mk
C++ Code
2
3
4
5
APP_STL := gnustl_static
APP_CPPFLAGS := -frtti -fexceptions
APP_ABI := armeabi-v7a
APP_PLATFORM := android-8
APP_CPPFLAGS := -frtti -fexceptions
APP_ABI := armeabi-v7a
APP_PLATFORM := android-8
注：1.由于Android的版本差异，所以使用OpenCV的Navtive Camera还是比较危险的，可能会出现奔溃的情况（本人三星 I9220测试通过）
2.为了应付android的各个版本，OpenCV在封装android的Camera的时候也有了不同的Camera.so，在android.mk说明了不同版本使用不同的camera.so，这样就极大降低了程序奔溃的可能。
3.OpenCV的环境还是需要自己配置一下。
最后附上Github原作者的地址 NativeCamera
0 0
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