start conversion of bmp to rgb dlib image

Author: vkocheryzhkin

visionSamples/FaceTracker/app/src/main/cpp/native-lib.cpp

@@ -3,20 +3,35 @@
 #include <android/log.h>
 #include <android/bitmap.h>
 
+#include <dlib/dnn.h>
+#include <dlib/image_processing/frontal_face_detector.h>
 #include <dlib/image_processing.h>
+#include <dlib/svm/svm_multiclass_linear_trainer.h>
 
 using namespace std;
+using namespace dlib;
 
 #define  LOG_TAG    "Native"
 #define  LOGI(...)  __android_log_print(ANDROID_LOG_INFO,LOG_TAG,__VA_ARGS__)
 #define  LOGE(...)  __android_log_print(ANDROID_LOG_ERROR,LOG_TAG,__VA_ARGS__)
 
+typedef struct
+{
+    uint8_t alpha;
+    uint8_t red;
+    uint8_t green;
+    uint8_t blue;
+} argb;
+
 extern "C"
 JNIEXPORT jstring JNICALL
 Java_com_google_android_gms_samples_vision_face_facetracker_CustomDetector_test(JNIEnv *env,
                                                                                 jobject instance,
                                                                                 jobject bmp) {
     AndroidBitmapInfo infocolor;
+    void* pixelscolor;
+    int y;
+    int x;
     int ret;
     if ((ret = AndroidBitmap_getInfo(env, bmp, &infocolor)) < 0) {
         LOGE("AndroidBitmap_getInfo() failed ! error=%d", ret);
@@ -29,6 +44,30 @@ Java_com_google_android_gms_samples_vision_face_facetracker_CustomDetector_test(
         LOGE("Bitmap format is not RGBA_8888 !");
         return env->NewStringUTF("Image broken 2");
     }
+
+    if ((ret = AndroidBitmap_lockPixels(env, bmp, &pixelscolor)) < 0) {
+        LOGE("AndroidBitmap_lockPixels() failed ! error=%d", ret);
+    }
+
+    for (y=0;y<infocolor.height;y++) {
+        argb * line = (argb *) pixelscolor;
+        pixelscolor = (char *)pixelscolor + infocolor.stride;
+    }
+
+//    array2d<rgb_pixel> img;
+//    img.set_size(infocolor.height, infocolor.width);
+//    for (int y = 0; y < infocolor.height; y++){
+//        for (int x = 0; x < infocolor.width; x++){
+//            img[y][x] = pixelscolor[y * infocolor.width + x];
+//        }
+//    }
+
+
+    LOGI("unlocking pixels");
+    AndroidBitmap_unlockPixels(env, bmp);
+
+
+
     const char *returnValue = "test";
     return env->NewStringUTF(returnValue);
 }

visionSamples/FaceTracker/app/src/main/java/com/google/android/gms/samples/vision/face/facetracker/CustomDetector.java

@@ -63,9 +63,11 @@ public SparseArray<Face> detect(Frame frame) {
         mFrame = frame;
         if (IsBusy) {
             if (recognitionHandler != null) {
-                YuvImage yuvImage = new YuvImage(frame.getGrayscaleImageData().array(), ImageFormat.NV21, frame.getMetadata().getWidth(), frame.getMetadata().getHeight(), null);
+                YuvImage yuvImage = new YuvImage(frame.getGrayscaleImageData().array(), ImageFormat.NV21,
+                        frame.getMetadata().getWidth(), frame.getMetadata().getHeight(), null);
                 ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
-                yuvImage.compressToJpeg(new Rect(0, 0, frame.getMetadata().getWidth(), frame.getMetadata().getHeight()), 100, byteArrayOutputStream);
+                yuvImage.compressToJpeg(new Rect(0, 0, frame.getMetadata().getWidth(),
+                        frame.getMetadata().getHeight()), 100, byteArrayOutputStream);
                 byte[] jpegArray = byteArrayOutputStream.toByteArray();
                 Bitmap tmpBitmap = BitmapFactory.decodeByteArray(jpegArray, 0, jpegArray.length);
                 final Bitmap cropped = Bitmap.createBitmap(tmpBitmap, x, y, w, h);