From 9cca4ffd9987352e43119d9c4dea0ce84c2c448f Mon Sep 17 00:00:00 2001
From: Stanislaw Halik <sthalik@misaki.pl>
Date: Fri, 5 Oct 2018 15:59:58 +0200
Subject: silly busywork

---
 compat/camera-names.cpp | 33 ++++++++++++---------------------
 compat/macros.hpp       |  2 +-
 compat/math.hpp         |  6 +++---
 compat/qhash.hpp        |  3 +--
 4 files changed, 17 insertions(+), 27 deletions(-)

(limited to 'compat')

diff --git a/compat/camera-names.cpp b/compat/camera-names.cpp
index 23649d38..246d76ee 100644
--- a/compat/camera-names.cpp
+++ b/compat/camera-names.cpp
@@ -1,9 +1,9 @@
 #include "camera-names.hpp"
 
 #ifdef _WIN32
+#   include <cwchar>
 #   define NO_DSHOW_STRSAFE
 #   include <dshow.h>
-#   include <cwchar>
 #elif defined(__unix) || defined(__linux) || defined(__APPLE__)
 #   include <unistd.h>
 #endif
@@ -13,6 +13,7 @@
 #   include <sys/ioctl.h>
 #   include <linux/videodev2.h>
 #   include <cerrno>
+#   include <cstring>
 #endif
 
 #include <QDebug>
@@ -29,7 +30,7 @@ int camera_name_to_index(const QString &name)
 QList<QString> get_camera_names()
 {
     QList<QString> ret;
-#if defined(_WIN32)
+#ifdef _WIN32
     // Create the System Device Enumerator.
     HRESULT hr;
     CoInitialize(nullptr);
@@ -54,23 +55,16 @@ QList<QString> get_camera_names()
             hr = pMoniker->BindToStorage(nullptr, nullptr, IID_IPropertyBag, (void **)&pPropBag);
             if (SUCCEEDED(hr))	{
                 // To retrieve the filter's friendly name, do the following:
-                VARIANT varName;
-                VariantInit(&varName);
-                hr = pPropBag->Read(L"FriendlyName", &varName, nullptr);
+                VARIANT var;
+                VariantInit(&var);
+                hr = pPropBag->Read(L"FriendlyName", &var, nullptr);
                 if (SUCCEEDED(hr))
                 {
                     // Display the name in your UI somehow.
-                    QString str((QChar*)varName.bstrVal, int(std::wcslen(varName.bstrVal)));
+                    QString str((QChar*)var.bstrVal, int(std::wcslen(var.bstrVal)));
                     ret.append(str);
                 }
-                VariantClear(&varName);
-
-                ////// To create an instance of the filter, do the following:
-                ////IBaseFilter *pFilter;
-                ////hr = pMoniker->BindToObject(NULL, NULL, IID_IBaseFilter,
-                ////	(void**)&pFilter);
-                // Now add the filter to the graph.
-                //Remember to release pFilter later.
+                VariantClear(&var);
                 pPropBag->Release();
             }
             pMoniker->Release();
@@ -82,14 +76,11 @@ QList<QString> get_camera_names()
 
     pSysDevEnum->Release();
 #endif
+
 #ifdef __linux
     for (int i = 0; i < 16; i++) {
-        char buf[128];
-        sprintf(buf, "/dev/video%d", i);
-        if (access(buf, F_OK) == 0)
-            ret.append(buf);
-        else
-            continue;
+        char buf[32];
+        snprintf(buf, sizeof(buf), "/dev/video%d", i);
 
         if (access(buf, R_OK | W_OK) == 0) {
             int fd = open(buf, O_RDONLY);
@@ -102,7 +93,7 @@ QList<QString> get_camera_names()
                 close(fd);
                 continue;
             }
-            ret[ret.size()-1] = reinterpret_cast<const char*>(video_cap.card);
+            ret.append(QString{(const char*)video_cap.card});
             close(fd);
         }
     }
diff --git a/compat/macros.hpp b/compat/macros.hpp
index 3c93ee13..42d5d649 100644
--- a/compat/macros.hpp
+++ b/compat/macros.hpp
@@ -85,7 +85,7 @@ using to_const_lvalue_reference_t = remove_cvref_t<t> const&;
 template<typename t>
 using cv_qualified = std::conditional_t<std::is_fundamental_v<std::decay_t<t>>,
                                         std::decay_t<t>,
-                                        std::add_lvalue_reference_t<std::add_const_t<std::remove_reference_t<t>>>>;
+                                        std::add_lvalue_reference_t<std::add_const_t<remove_cvref_t<t>>>>;
 
 template<bool>
 [[deprecated]] constexpr cc_forceinline void static_warn() {}
diff --git a/compat/math.hpp b/compat/math.hpp
index eae1435e..04a6e08d 100644
--- a/compat/math.hpp
+++ b/compat/math.hpp
@@ -53,10 +53,10 @@ inline auto clamp(const t& val, const u& min, const w& max)
     return ::util_detail::clamp<std::decay_t<tp>, tp>::clamp_(val, min, max);
 }
 
-template<typename t>
-inline auto iround(t val) -> std::enable_if_t<!std::is_integral_v<std::decay_t<t>>, t>
+template<typename t, typename integral_type = int>
+inline auto iround(t val) -> std::enable_if_t<!std::is_integral_v<std::decay_t<t>>, integral_type>
 {
-    return (int) std::round(val);
+    return static_cast<integral_type>(std::round(val));
 }
 
 template<typename t>
diff --git a/compat/qhash.hpp b/compat/qhash.hpp
index a9685007..ba569285 100644
--- a/compat/qhash.hpp
+++ b/compat/qhash.hpp
@@ -1,13 +1,12 @@
 #pragma once
 
-#include <functional>
 #include <QString>
 #include <QHashFunctions>
 
 namespace std {
 template<> struct hash<QString>
 {
-    inline unsigned operator()(const QString& value) const
+    constexpr unsigned operator()(const QString& value) const
     {
         return qHash(value);
     }
-- 
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