From 64c2d38e4454b446282d7759a25c03ca02438ec8 Mon Sep 17 00:00:00 2001
From: BlueMatthew <wakinchau@msn.com>
Date: Tue, 16 Jan 2024 18:16:51 +0800
Subject: [PATCH] =?UTF-8?q?=E5=A2=9E=E5=8A=A0=E4=BA=86=E6=97=8B=E8=BD=AC?=
 =?UTF-8?q?=E7=9A=84=E6=8E=A7=E5=88=B6?=
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---
 app/src/main/cpp/camera2/ndkcamera.cpp   | 87 ++++++++++++------------
 app/src/main/res/values/orientations.xml |  1 +
 2 files changed, 43 insertions(+), 45 deletions(-)

diff --git a/app/src/main/cpp/camera2/ndkcamera.cpp b/app/src/main/cpp/camera2/ndkcamera.cpp
index b9e80800..09018c7f 100644
--- a/app/src/main/cpp/camera2/ndkcamera.cpp
+++ b/app/src/main/cpp/camera2/ndkcamera.cpp
@@ -718,65 +718,62 @@ void NdkCamera::on_image(const unsigned char* nv21, int nv21_width, int nv21_hei
     int w = 0;
     int h = 0;
     int rotate_type = 0;
+    const unsigned char* yuv420data = nv21;
     // TODO !!!???
     // int co = camera_orientation > 0 ? camera_orientation + 90 : camera_orientation;
-    int co = (camera_orientation + m_params.orientation * 90) % 360;
-    // int co = 0;
-    if (co == 0)
+    if (m_params.orientation != 0)
     {
-        w = nv21_width;
-        h = nv21_height;
-        rotate_type = camera_facing == 0 ? 2 : 1;
-    }
-    if (co == 90)
-    {
-        w = nv21_height;
-        h = nv21_width;
-        rotate_type = camera_facing == 0 ? 5 : 6;
+        int co = 0;
+        if (camera_facing == ACAMERA_LENS_FACING_FRONT)
+        {
+            co = (camera_orientation - (m_params.orientation - 1) * 90 + 360) % 360;
+        }
+        else
+        {
+            co = (camera_orientation + (m_params.orientation - 1) * 90) % 360;
+        }
+        // int co = 0;
+        if (co == 0)
+        {
+            w = nv21_width;
+            h = nv21_height;
+            rotate_type = camera_facing == 0 ? 2 : 1;
+        }
+        if (co == 90)
+        {
+            w = nv21_height;
+            h = nv21_width;
+            rotate_type = camera_facing == 0 ? 5 : 6;
+        }
+        if (co == 180)
+        {
+            w = nv21_width;
+            h = nv21_height;
+            rotate_type = camera_facing == 0 ? 4 : 3;
+        }
+        if (co == 270)
+        {
+            w = nv21_height;
+            h = nv21_width;
+            rotate_type = camera_facing == 0 ? 7 : 8;
+        }
+
+        cv::Mat nv21_rotated(h + h / 2, w, CV_8UC1);
+        ncnn::kanna_rotate_yuv420sp(nv21, nv21_width, nv21_height, nv21_rotated.data, w, h, rotate_type);
+        yuv420data = nv21_rotated.data;
     }
-    if (co == 180)
+    else
     {
         w = nv21_width;
         h = nv21_height;
-        rotate_type = camera_facing == 0 ? 4 : 3;
-    }
-    if (co == 270)
-    {
-        w = nv21_height;
-        h = nv21_width;
-        rotate_type = camera_facing == 0 ? 7 : 8;
     }
 
-#if 0
-    cv::Mat nv21_rotated(h + h / 2, w, CV_8UC1);
-    ncnn::kanna_rotate_yuv420sp(nv21, nv21_width, nv21_height, nv21_rotated.data, w, h, rotate_type);
-
-#ifdef _DEBUG
-    if (nv21_rotated.empty())
-    {
-        int aa = 0;
-    }
-#endif
-
     // nv21_rotated to rgb
     cv::Mat rgb(h, w, CV_8UC3);
     // ncnn::yuv420sp2rgb(nv21_rotated.data, w, h, rgb.data);
-    ncnn::yuv420sp2rgb_nv12(nv21_rotated.data, w, h, rgb.data);
-#else
-
-    w = nv21_width;
-    h = nv21_height;
-
-    // nv21_rotated to rgb
-    cv::Mat rgb(h, w, CV_8UC3);
-    // ncnn::yuv420sp2rgb(nv21_rotated.data, w, h, rgb.data);
-    ncnn::yuv420sp2rgb_nv12(nv21, w, h, rgb.data);
-#endif // 0
-    // cv::Mat rgb(h, w, CV_8UC3);
-    // ncnn::yuv420sp2rgb_nv12(nv21, w, h, rgb.data);
+    ncnn::yuv420sp2rgb_nv12(yuv420data, w, h, rgb.data);
 
     on_image(rgb);
-
 }
 
 void NdkCamera::onCaptureCompleted(ACameraCaptureSession* session, ACaptureRequest* request, const ACameraMetadata* result)
diff --git a/app/src/main/res/values/orientations.xml b/app/src/main/res/values/orientations.xml
index 751c02e2..3274fa4e 100644
--- a/app/src/main/res/values/orientations.xml
+++ b/app/src/main/res/values/orientations.xml
@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
     <string-array name="orientations">
+        <item>无旋转</item>
         <item>0°</item>
         <item>90°</item>
         <item>180°</item>