feat(android): add native bitmap utils

wrappers/android/mynteye/app/src/main/java/com/slightech/mynteye/demo/camera/Mynteye.java

@@ -56,8 +56,9 @@ public final class Mynteye implements Runnable {
     startBackgroundThread();
 
     mDevice.configStreamRequest(request);
-    mDevice.enableMotionDatas(Integer.MAX_VALUE);
+    //mDevice.enableMotionDatas(Integer.MAX_VALUE);
-    mDevice.start(Source.ALL);
+    //mDevice.start(Source.ALL);
+    mDevice.start(Source.VIDEO_STREAMING);
 
     mBackgroundHandler.post(this);
   }
@@ -91,12 +92,14 @@ public final class Mynteye implements Runnable {
     }
 
     //Timber.i("get motions");
+    /*
     {
       ArrayList<MotionData> datas = mDevice.getMotionDatas();
       if (mOnMotionDataReceiveListener != null) {
         mOnMotionDataReceiveListener.onMotionDataReceive(datas, mBackgroundHandler);
       }
     }
+    */
 
     if (mOpened) mBackgroundHandler.post(this);
   }

wrappers/android/mynteye/app/src/main/java/com/slightech/mynteye/demo/ui/MainActivity.java

@@ -32,6 +32,7 @@ import com.slightech.mynteye.usb.CameraDialog;
 import com.slightech.mynteye.usb.USBMonitor;
 import com.slightech.mynteye.usb.USBMonitor.OnDeviceConnectListener;
 import com.slightech.mynteye.usb.USBMonitor.UsbControlBlock;
+import com.slightech.mynteye.util.BitmapUtils;
 import java.nio.ByteBuffer;
 import java.util.ArrayList;
 import java.util.Locale;
@@ -166,51 +167,8 @@ public class MainActivity extends BaseActivity implements CameraDialog.CameraDia
   private void actionOpen(final Runnable completeEvent) {
     if (completeEvent != null) completeEvent.run();
     CameraDialog.showDialog(this);
-    /*
-    if (!RootUtils.isRooted()) {
-      if (completeEvent != null) completeEvent.run();
-      alert("Warning", "Root denied :(");
-      return;
-    }
-    RootUtils.requestAccessible(ok -> {
-      if (completeEvent != null) completeEvent.run();
-      if (ok) {
-        toast("Root granted :)");
-        showDevices();
-      } else {
-        alert("Warning", "There are no devices accessible.");
-      }
-    });
-    */
   }
 
-  /*
-  private void showDevices() {
-    ArrayList<DeviceUsbInfo> infos = Device.query();
-    if (infos.isEmpty()) {
-      alert("Warning", "There are no devices :(");
-    } else {
-      ArrayList<String> items = new ArrayList<>();
-      for (DeviceUsbInfo info : infos) {
-        items.add(String.format(Locale.getDefault(), "%d, %s, SN: %s",
-            info.getIndex(), info.getName(), info.getSn()));
-      }
-
-      AlertDialog dialog = new AlertDialog.Builder(this)
-          .setTitle("Devices")
-          .create();
-      ListView listView = new ListView(this);
-      listView.setAdapter(new ArrayAdapter<>(this, android.R.layout.simple_list_item_1, items));
-      listView.setOnItemClickListener((parent, view, position, id) -> {
-        dialog.dismiss();
-        openDevice(infos.get(position));
-      });
-      dialog.setView(listView);
-      dialog.show();
-    }
-  }
-  */
-
   private void openDevice(DeviceUsbInfo info) {
     mMynteye = new Mynteye(info);
     ArrayList<StreamRequest> requests = mMynteye.getStreamRequests();
@@ -256,15 +214,9 @@ public class MainActivity extends BaseActivity implements CameraDialog.CameraDia
     //Timber.i("onStreamLeftReceive");
     Frame frame = data.frame();
     if (mLeftBitmap == null) {
-      Bitmap.Config config;
+      mLeftBitmap = Bitmap.createBitmap(frame.width(), frame.height(), Bitmap.Config.ARGB_8888);
-      switch (frame.format()) {
-        case GREY: config = Bitmap.Config.ALPHA_8; break;
-        case RGB888: config = Bitmap.Config.ARGB_8888; break;
-        default: Timber.e("Unaccepted stream format"); return;
-      }
-      mLeftBitmap = Bitmap.createBitmap(frame.width(), frame.height(), config);
     }
-    mLeftBitmap.copyPixelsFromBuffer(ByteBuffer.wrap(frame.data()));
+    BitmapUtils.copyPixels(frame, mLeftBitmap);
     mLeftImageView.post(() -> mLeftImageView.setImageBitmap(mLeftBitmap));
   }
 
@@ -273,15 +225,9 @@ public class MainActivity extends BaseActivity implements CameraDialog.CameraDia
     //Timber.i("onStreamRightReceive");
     Frame frame = data.frame();
     if (mRightBitmap == null) {
-      Bitmap.Config config;
+      mRightBitmap = Bitmap.createBitmap(frame.width(), frame.height(), Bitmap.Config.ARGB_8888);
-      switch (frame.format()) {
-        case GREY: config = Bitmap.Config.ALPHA_8; break;
-        case RGB888: config = Bitmap.Config.ARGB_8888; break;
-        default: Timber.e("Unaccepted stream format"); return;
-      }
-      mRightBitmap = Bitmap.createBitmap(frame.width(), frame.height(), config);
     }
-    mRightBitmap.copyPixelsFromBuffer(ByteBuffer.wrap(frame.data()));
+    BitmapUtils.copyPixels(frame, mRightBitmap);
     mRightImageView.post(() -> mRightImageView.setImageBitmap(mRightBitmap));
   }
 

wrappers/android/mynteye/libmynteye/CMakeLists.txt

@@ -28,6 +28,10 @@ endif()
 
 find_library(log-lib log)
 
+## jnigraphics
+
+find_library(jnigraphics-lib jnigraphics)
+
 ## djinni_jni
 
 include_directories(
@@ -115,6 +119,7 @@ endforeach()
 
 add_library(mynteye_jni SHARED
   ${DJINNI_DIR}/support-lib/jni/djinni_main.cpp
+  ${CPP_DIR}/mynteye/impl/util/jni_util.cpp
   ${MYNTEYE_JNI_SRCS}
 )
-target_link_libraries(mynteye_jni ${log-lib} djinni_jni mynteye mynteye_internal)
+target_link_libraries(mynteye_jni ${log-lib} ${jnigraphics-lib} djinni_jni mynteye mynteye_internal)

wrappers/android/mynteye/libmynteye/src/main/cpp/mynteye/impl/frame_impl.hpp

@@ -39,6 +39,10 @@ class FrameImpl : public Frame {
     return std::vector<uint8_t>(frame_->data(), frame_->data() + frame_->size());
   }
 
+  frame_t RawFrame() const {
+    return frame_;
+  }
+
  private:
   frame_t frame_;
 };

wrappers/android/mynteye/libmynteye/src/main/cpp/mynteye/impl/util/jni_util.cpp

@@ -0,0 +1,117 @@
+#include <android/bitmap.h>
+#include <android/log.h>
+#include <jni.h>
+
+#ifndef LOG_TAG
+#define LOG_TAG "native"
+#endif
+
+#define LOGI(...) \
+  ((void)__android_log_print(ANDROID_LOG_INFO, LOG_TAG, __VA_ARGS__))
+#define LOGW(...) \
+  ((void)__android_log_print(ANDROID_LOG_WARN, LOG_TAG, __VA_ARGS__))
+#define LOGE(...) \
+  ((void)__android_log_print(ANDROID_LOG_ERROR, LOG_TAG, __VA_ARGS__))
+
+#include "NativeFrame.hpp"
+
+#include "frame_impl.hpp"
+
+// BitmapUtils
+
+// RGBA
+typedef struct {
+  uint8_t r;
+  uint8_t g;
+  uint8_t b;
+  uint8_t a;
+} rgba_t;
+
+void copyPixelsGray(std::uint8_t *from, rgba_t *to, uint32_t n);
+void copyPixelsBGR3(std::uint8_t *from, rgba_t *to, uint32_t n);
+void copyPixelsRGB3(std::uint8_t *from, rgba_t *to, uint32_t n);
+
+void copyPixels(mynteye_jni::FrameImpl::frame_t from, rgba_t *to,
+    const AndroidBitmapInfo &info) {
+  if (info.width != from->width() || info.height != from->height()) {
+    LOGE("Frame size is not same");
+    return;
+  }
+  uint32_t n = info.width * info.height;
+  switch (from->format()) {
+    case MYNTEYE_NAMESPACE::Format::GREY:
+      copyPixelsGray(from->data(), to, n);
+      return;
+    case MYNTEYE_NAMESPACE::Format::BGR888:
+      copyPixelsBGR3(from->data(), to, n);
+      return;
+    case MYNTEYE_NAMESPACE::Format::RGB888:
+      copyPixelsRGB3(from->data(), to, n);
+      return;
+    case MYNTEYE_NAMESPACE::Format::YUYV:
+    default:
+      LOGE("Frame format is not supported");
+      return;
+  }
+}
+
+CJNIEXPORT void JNICALL Java_com_slightech_mynteye_util_BitmapUtils_copyPixels(
+    JNIEnv *env, jclass clazz, jobject j_frame, jobject bitmap) {
+  auto frame = ::djinni_generated::NativeFrame::toCpp(env, j_frame);
+  // LOGI("frame format: %dx%d", frame->Width(), frame->Height());
+  auto frame_raw = std::dynamic_pointer_cast<mynteye_jni::FrameImpl>(frame)->RawFrame();
+
+  AndroidBitmapInfo info;
+  int result;
+  if ((result = AndroidBitmap_getInfo(env, bitmap, &info)) < 0) {
+    LOGE("AndroidBitmap_getInfo() failed, error=%d", result);
+    return;
+  }
+  if (info.format != ANDROID_BITMAP_FORMAT_RGBA_8888) {
+    LOGE("Bitmap format is not RGBA_8888!");
+    return;
+  }
+
+  void *pixels;
+  if ((result = AndroidBitmap_lockPixels(env, bitmap, &pixels)) < 0) {
+    LOGE("AndroidBitmap_lockPixels() failed, error=%d", result);
+  }
+  rgba_t *rgba_pixels = static_cast<rgba_t*>(pixels);
+
+  copyPixels(frame_raw, rgba_pixels, info);
+
+  AndroidBitmap_unlockPixels(env, bitmap);
+}
+
+void copyPixelsGray(std::uint8_t *from, rgba_t *to, uint32_t n) {
+  for (uint32_t i = 0; i < n; ++i) {
+    std::uint8_t &gray = from[i];
+    rgba_t &rgba = to[i];
+    rgba.r = gray;
+    rgba.g = gray;
+    rgba.b = gray;
+    rgba.a = 255;
+  }
+}
+
+void copyPixelsBGR3(std::uint8_t *from, rgba_t *to, uint32_t n) {
+  for (uint32_t i = 0; i < n; ++i) {
+    std::uint8_t *bgr = from + (i*3);
+    rgba_t &rgba = to[i];
+    rgba.r = *(bgr + 2);
+    rgba.g = *(bgr + 1);
+    rgba.b = *(bgr);
+    rgba.a = 255;
+  }
+}
+
+void copyPixelsRGB3(std::uint8_t *from, rgba_t *to, uint32_t n) {
+  for (uint32_t i = 0; i < n; ++i) {
+    std::uint8_t *rgb = from + (i*3);
+    rgba_t &rgba = to[i];
+    rgba.r = *(rgb);
+    rgba.g = *(rgb + 1);
+    rgba.b = *(rgb + 2);
+    rgba.a = 255;
+  }
+}

wrappers/android/mynteye/libmynteye/src/main/java/com/slightech/mynteye/util/BitmapUtils.java

@@ -0,0 +1,10 @@
+package com.slightech.mynteye.util;
+
+import android.graphics.Bitmap;
+import com.slightech.mynteye.Frame;
+
+public class BitmapUtils {
+
+  public static native void copyPixels(Frame from, Bitmap to);
+
+}