nds_channel_cache.hh

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#ifndef NDS_INTERNAL_CHANNEL_CACHE_HH
#define NDS_INTERNAL_CHANNEL_CACHE_HH
 
#include <cstdint>
#include <vector>
#include <array>
 
#include "nds_connection.hh"
 
namespace NDS
{
 
    namespace detail
    {
        class daq_accessor;
 
        struct nds1_cached_channel
        {
            double                rate;
            uint32_t              tpnum;
            float                 gain;
            float                 slope;
            float                 offset;
            channel::channel_type channel_type;
            channel::data_type    data_type;
            std::array< char, 64 + 60 + 1 > name;
            std::array< char, 40 + 1 >      units;
        };
 
        class channel_cache_nds1
        {
        public:
            typedef detail::nds1_cached_channel     cache_entry_type;
            typedef std::vector< cache_entry_type > cache_type;
 
            channel_cache_nds1( detail::daq_accessor& server );
 
            size_t count_channels( std::string               channel_glob,
                                   channel::channel_type     channel_type_mask,
                                   channel::data_type        data_type_mask,
                                   channel::sample_rate_type min_sample_rate,
                                   channel::sample_rate_type max_sample_rate );
 
            channels_type
            find_channels( std::string               channel_glob,
                           channel::channel_type     channel_type_mask,
                           channel::data_type        data_type_mask,
                           channel::sample_rate_type min_sample_rate,
                           channel::sample_rate_type max_sample_rate );
 
        private:
            void update_cache( );
 
            detail::daq_accessor& server_;
            cache_type            cache_;
        };
    }
}
 
#endif // NDS_INTERNAL_CHANNEL_CACHE_HH