media: store framerates into a float

Change-Id: Iebaca9e57cb165c11ad44664e3799205e4c9474d

src/api/newvideo.h

@@ -49,7 +49,7 @@ constexpr static const char PREVIEW_RENDERER_ID[] = "local";
 
 using Channel = std::string;
 using Resolution = std::string;
-using Framerate = uint64_t;
+using Framerate = float;
 using FrameratesList = std::vector<Framerate>;
 using Capabilities = std::map<Channel, std::map<Resolution, FrameratesList>>;
 

src/avmodel.cpp

@@ -221,7 +221,7 @@ AVModel::getDeviceSettings(const std::string& name) const
     result.name = settings["name"].toStdString();
     result.channel = settings["channel"].toStdString();
     result.size = settings["size"].toStdString();
-    result.rate = settings["rate"].toUInt();
+    result.rate = settings["rate"].toFloat();
     return result;
 }
 
@@ -238,7 +238,7 @@ AVModel::getDeviceCapabilities(const std::string& name) const
             video::FrameratesList rates;
             QVectorIterator<QString> itRates(resToRates.second);
             while (itRates.hasNext()) {
-                rates.emplace_back(itRates.next().toUInt());
+                rates.emplace_back(itRates.next().toFloat());
             }
             channelCapabilities.insert(
                 std::make_pair(resToRates.first.toStdString(), rates));