From 73f99d08ceee499d93b0215e4b964cb864b4cc85 Mon Sep 17 00:00:00 2001
From: Fam Zheng <fam@euphon.net>
Date: Tue, 25 Mar 2025 13:17:09 +0800
Subject: [PATCH] alg: Add side_by_side cmd

---
 alg/qrtool.cpp | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/alg/qrtool.cpp b/alg/qrtool.cpp
index 093dfd5..ffcc7a3 100644
--- a/alg/qrtool.cpp
+++ b/alg/qrtool.cpp
@@ -634,6 +634,28 @@ int roi_verify_cmd(char **argv, int argc)
     return 0;
 }
 
+static
+int side_by_side_cmd(char **argv, int argc)
+{
+    Mat frame_roi;
+    string err;
+    cout << "side by side processing: " << argv[0] << " " << argv[1] << endl;
+    int r = roi_process_one(argv[0], false, err, true, &frame_roi);
+    if (r) {
+        cerr << "failed to process: " << argv[0] << ":" << err << endl;
+        return r;
+    }
+    Mat std_roi = imread(argv[1]);
+    Mat side_by_side;
+    auto roi_size = Size(128, 128);
+    resize(frame_roi, frame_roi, roi_size);
+    resize(std_roi, std_roi, roi_size);
+    hconcat(frame_roi, std_roi, side_by_side);
+    auto fn = string(argv[0]) + ".side_by_side.jpg";
+    imwrite(fn, side_by_side);
+    return 0;
+}
+
 #ifdef QRTOOL_MAIN
 int main(int argc, char *argv[])
 {
@@ -668,6 +690,7 @@ int main(int argc, char *argv[])
     add_cmd(http_server, 1);
     add_cmd(verify, 2);
     add_cmd(roi_verify, 2);
+    add_cmd(side_by_side, 2);
     usage(argv[0], cmds);
     return 1;
 }