1# 简介 2 - rknn_yolov5_android_apk_demo 是RK356X/RK3588上如何调用NPU的demo，该demo的基础模型是yolov5s 3 4 5 6# 使用说明 7 8 - 可以使用android studio 2021.2.1 （Windows）或者android studio 2021.3.1（Linux/macOS） 编译该工程 9 - yolov5s.rknn是使用rknn toolkit2将yolov5s.onnx转换而来，具体转换方法参考rknn toolkit2的examples/onnx/yolov5 10 11 12 13# 代码说明 14 15## 代码分为两大部分： 16 - JAVA: com.rockchip.gpadc.demo: 读取camera输入，并调用jni进行inference，并将结果显示出来 17 18 - JNI: 调用rknnrt进行实际inference 19 20 21 22# 权限 23 运行本程序需要Camera及EXTERNAL_STORAGE读写权限 24 25 26# FAQ 27 28## 编译时出现“files found with path 'lib/arm64-v8a/xxx.so' from inputs:”类似错误 29``` 30Execution failed for task ':app:mergeDebugNativeLibs'. 31> A failure occurred while executing com.android.build.gradle.internal.tasks.MergeNativeLibsTask$MergeNativeLibsTaskWorkAction 32 > 2 files found with path 'lib/arm64-v8a/librga.so' from inputs: 33 - rknpu2/examples/rknn_yolov5_android_apk_demo/app/build/intermediates/merged_jni_libs/debug/out/arm64-v8a/librga.so 34 - rknpu2/examples/rknn_yolov5_android_apk_demo/app/build/intermediates/cxx/Debug/3f40b265/obj/arm64-v8a/librga.so 35 If you are using jniLibs and CMake IMPORTED targets, see 36 https://developer.android.com/r/tools/jniLibs-vs-imported-targets 37 38* Try: 39> Run with --info or --debug option to get more log output. 40> Run with --scan to get full insights. 41``` 42或者 43``` 442 files found with path 'lib/arm64-v8a/xxx.so' from inputs: 45 - rknn_yolov5_android_apk_demo/app/build/intermediates/merged_jni_libs/debug/out/arm64-v8a/librga.so 46 - rknn_yolov5_android_apk_demo/app/build/intermediates/cxx/Debug/3f40b265/obj/arm64-v8a/librga.so 47If you are using jniLibs and CMake IMPORTED targets, see 48https://developer.android.com/r/tools/jniLibs-vs-imported-targets 49``` 50则需要添加 app/build.gradle中的"jniLibs.srcDirs = ['libs']"，具体原因参考“https://developer.android.com/r/tools/jniLibs-vs-imported-targets” 51 52 53 54## app启动时，出现"E/SurfaceView: Exception configuring surface"的错误 55 56``` 57D/rkyolo: camera facing: 1 58V/rkyolo: Camera Supported Preview Size = 160x90 59V/rkyolo: Camera Supported Preview Size = 320x180 60V/rkyolo: Camera Supported Preview Size = 432x240 61V/rkyolo: Camera Supported Preview Size = 640x360 62V/rkyolo: Camera Supported Preview Size = 800x448 63V/rkyolo: Camera Supported Preview Size = 864x480 64V/rkyolo: Camera Supported Preview Size = 1024x576 65V/rkyolo: Camera Supported Preview Size = 1280x720 66V/rkyolo: Camera Supported Preview Size = 1600x896 67V/rkyolo: Camera Supported Preview Size = 1920x1080 68E/SurfaceView: Exception configuring surface 69 java.lang.RuntimeException: setParameters failed 70 at android.hardware.Camera.native_setParameters(Native Method) 71 at android.hardware.Camera.setParameters(Camera.java:2068) 72 at com.rockchip.gpadc.demo.MainActivity.setCameraParameters(MainActivity.java:295) 73 at com.rockchip.gpadc.demo.MainActivity.startCamera(MainActivity.java:245) 74 at com.rockchip.gpadc.demo.MainActivity.access$300(MainActivity.java:47) 75 at com.rockchip.gpadc.demo.MainActivity$TSurfaceHolderCallback.surfaceCreated(MainActivity.java:199) 76``` 77 78是因为app设置的分辨率该camera不支持，需要修改"app/src/main/java/com/rockchip/gpadc/demo/rga/HALDefine.java"中CAMERA_PREVIEW_WIDTH及CAMERA_PREVIEW_HEIGHT为摄像头支持的分辨率。