From 631c85c85f2e82bfdf7f6c58c5866f12ad0836a6 Mon Sep 17 00:00:00 2001
From: Stanislaw Halik <sthalik@misaki.pl>
Date: Mon, 27 Jan 2020 15:21:52 +0100
Subject: video/opencv: store camera index

Issue: #1031
---
 compat/camera-names.cpp | 23 ++++++++++++++---------
 compat/camera-names.hpp |  3 ++-
 2 files changed, 16 insertions(+), 10 deletions(-)

(limited to 'compat')

diff --git a/compat/camera-names.cpp b/compat/camera-names.cpp
index 40edba49..8e777028 100644
--- a/compat/camera-names.cpp
+++ b/compat/camera-names.cpp
@@ -28,16 +28,22 @@
 int camera_name_to_index(const QString &name)
 {
     auto list = get_camera_names();
-    auto it = std::find(list.cbegin(), list.cend(), name);
+    auto it = std::find_if(list.cbegin(), list.cend(), [&name](const auto& tuple) {
+        const auto& [str, idx] = tuple;
+        return str == name;
+    });
     if (it != list.cend())
-        return std::distance(list.cbegin(), it);
+    {
+        const auto& [ str, idx ] = *it;
+        return idx;
+    }
 
     return -1;
 }
 
-std::vector<QString> get_camera_names()
+std::vector<std::tuple<QString, int>> get_camera_names()
 {
-    std::vector<QString> ret;
+    std::vector<std::tuple<QString, int>> ret;
 #ifdef _WIN32
     // Create the System Device Enumerator.
     HRESULT hr;
@@ -70,7 +76,7 @@ std::vector<QString> get_camera_names()
                 {
                     // Display the name in your UI somehow.
                     QString str((QChar*)var.bstrVal, int(std::wcslen(var.bstrVal)));
-                    ret.push_back(str);
+                    ret.push_back({ str, ret.size() });
                 }
                 VariantClear(&var);
                 pPropBag->Release();
@@ -101,16 +107,15 @@ std::vector<QString> get_camera_names()
                 close(fd);
                 continue;
             }
-            ret.push_back(QString((const char*)video_cap.card));
+            ret.push_back({ QString((const char*)video_cap.card), i});
             close(fd);
         }
     }
 #endif
 #ifdef __APPLE__
     QList<QCameraInfo> cameras = QCameraInfo::availableCameras();
-    foreach (const QCameraInfo &cameraInfo, cameras) {
-        ret.push_back(cameraInfo.description());  
-    }
+    for (const QCameraInfo &cameraInfo : cameras)
+        ret.push_back({ cameraInfo.description(), ret.size() });
 #endif
 
     return ret;
diff --git a/compat/camera-names.hpp b/compat/camera-names.hpp
index bda15e81..3585edfe 100644
--- a/compat/camera-names.hpp
+++ b/compat/camera-names.hpp
@@ -10,9 +10,10 @@
 
 #include <vector>
 #include <QString>
+#   include <tuple>
 
 #include "export.hpp"
 
-OTR_COMPAT_EXPORT std::vector<QString> get_camera_names();
+OTR_COMPAT_EXPORT std::vector<std::tuple<QString, int>> get_camera_names();
 OTR_COMPAT_EXPORT int camera_name_to_index(const QString &name);
 
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