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// Thanks to sh1r0, reference: https://github.com/sh1r0/caffe-android-demo
// TODO: add your package name
import java.nio.charset.StandardCharsets;
public class CaffeMobile {
/* private class */
private static byte[] stringToBytes(String s) {
return s.getBytes(StandardCharsets.US_ASCII);
}
private native void setMeanWithMeanFile(String meanFile);
private native void setMeanWithMeanValues(float[] meanValues);
private native int[] predictImage(byte[] data, int width, int height, int k);
private native float[] getConfidenceScore(byte[] data, int width, int height);
private native float[][] extractFeatures(byte[] data, int width, int height, String blobNames);
private native void native_setNumThreads(int numThreads);
//private native void enableLog(boolean enabled); // currently nonfunctional
private native int native_loadModel(String modelPath, String weightsPath); // required
//private native void setScale(float scale);
/* public class */
/*
* 设置CPU线程数，默认是2（RK3399中使用2线程，分别锁定在两个Cortex-A72性能最佳）
* numThreads：线程数
*/
public void setNumThreads(int numThreads) {
native_setNumThreads(numThreads);
}
/*
* 加载模型
* modelPath：模型描述文件路径
* weightsPath：模型权重数据路径
* 成功则返回0
*/
public int loadModel(String modelPath, String weightsPath) {
return native_loadModel(modelPath, weightsPath);
}
/*
* 图像预测
* imgPath：输入图像文件路径
* 返回所有类别预测的置信度
*/
public float[] getConfidenceScore(String imgPath) {
return getConfidenceScore(stringToBytes(imgPath), 0, 0);
}
/*
* 图像预测
* imgPath：输入图像文件路径
* k：设置输出Top k排行的标签id
* 返回Top k排行的标签id
*/
public int[] predictImage(String imgPath, int k) {
return predictImage(stringToBytes(imgPath), 0, 0, k);
}
/*
* 图像预测
* imgPath：输入图像文件路径
* 返回Top排行的标签id
*/
public int[] predictImage(String imgPath) {
return predictImage(imgPath, 1);
}
/*
* 提取中间层特征数据
* imgPath：输入图像文件路径
* blobNames：提取的中间层名称
*/
public float[][] extractFeatures(String imgPath, String blobNames) {
return extractFeatures(stringToBytes(imgPath), 0, 0, blobNames);
}
/*
* 设置均值（内存方式加载）
* meanValues：均值数据
*/
public void setMean(float[] meanValues) {
setMeanWithMeanValues(meanValues);
}
/*
* 设置均值（文件方式加载）
* meanFile：均值文件路径
*/
public void setMean(String meanFile) {
setMeanWithMeanFile(meanFile);
}
}