cea708cdp.h

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#pragma once
 
 
#include <promeki/config.h>
#if PROMEKI_ENABLE_PROAV
#include <cstdint>
#include <promeki/buffer.h>
#include <promeki/error.h>
#include <promeki/framerate.h>
#include <promeki/json.h>
#include <promeki/list.h>
#include <promeki/namespace.h>
#include <promeki/result.h>
#include <promeki/string.h>
#include <promeki/timecode.h>
 
PROMEKI_NAMESPACE_BEGIN
 
class DataStream;
 
class Cea708Cdp {
        public:
                PROMEKI_DATATYPE(Cea708Cdp, DataTypeCea708Cdp, 1)
 
                
                static constexpr uint16_t Identifier = 0x9669;
 
                static constexpr uint8_t FooterId = 0x74;
 
                static constexpr uint8_t TimeCodeSectionId = 0x71;
 
                static constexpr uint8_t CcDataSectionId = 0x72;
 
                static constexpr uint8_t CcSvcInfoSectionId = 0x73;
 
                struct CcData {
                                bool    valid = true; 
                                uint8_t type = 0;     
                                uint8_t b1 = 0;       
                                uint8_t b2 = 0;       
 
                                bool operator==(const CcData &o) const {
                                        return valid == o.valid && type == o.type && b1 == o.b1 && b2 == o.b2;
                                }
                                bool operator!=(const CcData &o) const { return !(*this == o); }
                };
 
                using CcDataList = ::promeki::List<CcData>;
 
                struct CcSvcInfoEntry {
                                bool    csnSize5Bit = false;
                                uint8_t captionServiceNumber = 0;
                                uint8_t languageCode[3] = {0, 0, 0};
                                bool    digitalCc = false;
                                bool    line21Field = false;
                                bool    easyReader = false;
                                bool    wideAspect = false;
 
                                bool operator==(const CcSvcInfoEntry &o) const {
                                        return csnSize5Bit == o.csnSize5Bit
                                               && captionServiceNumber == o.captionServiceNumber
                                               && languageCode[0] == o.languageCode[0]
                                               && languageCode[1] == o.languageCode[1]
                                               && languageCode[2] == o.languageCode[2]
                                               && digitalCc == o.digitalCc
                                               && line21Field == o.line21Field
                                               && easyReader == o.easyReader
                                               && wideAspect == o.wideAspect;
                                }
                                bool operator!=(const CcSvcInfoEntry &o) const { return !(*this == o); }
                };
 
                using CcSvcInfoEntryList = ::promeki::List<CcSvcInfoEntry>;
 
                // -- Header fields ----------------------------------------
 
                uint8_t frameRateCode = 0;
 
                bool timeCodePresent = false;
 
                bool ccDataPresent = false;
 
                bool svcInfoPresent = false;
 
                bool svcInfoStart = false;
 
                bool svcInfoChange = false;
 
                bool svcInfoComplete = false;
 
                bool captionServiceActive = false;
 
                uint16_t sequenceCounter = 0;
 
                // -- Sections ---------------------------------------------
 
                Timecode timeCode;
 
                bool tcFieldFlag = false;
 
                CcDataList ccData;
 
                CcSvcInfoEntryList ccSvcInfo;
 
                Buffer extraBytes;
 
                uint32_t svcInfoMismatches = 0;
 
                // -- Construction -----------------------------------------
 
                Cea708Cdp() = default;
 
                Cea708Cdp(uint8_t frameRateCode, CcDataList ccData, uint16_t sequenceCounter = 0)
                    : frameRateCode(frameRateCode)
                    , ccDataPresent(!ccData.isEmpty())
                    , captionServiceActive(!ccData.isEmpty())
                    , sequenceCounter(sequenceCounter)
                    , ccData(std::move(ccData)) {}
 
                // -- Wire round-trip --------------------------------------
 
                Buffer toBuffer() const;
 
                static Result<Cea708Cdp> fromBuffer(const void *data, size_t size);
 
                static Result<Cea708Cdp> fromBuffer(const Buffer &buf);
 
                static uint8_t frameRateCodeFor(const FrameRate &frameRate);
 
                // -- JSON dump --------------------------------------------
 
                JsonObject toJson() const;
 
                // -- Comparison -------------------------------------------
 
                bool operator==(const Cea708Cdp &o) const;
 
                bool operator!=(const Cea708Cdp &o) const { return !(*this == o); }
 
                // -- Diagnostics ------------------------------------------
 
                String toString() const;
 
                Error writeToStream(DataStream &s) const;
 
                template <uint32_t V> static Result<Cea708Cdp> readFromStream(DataStream &s);
};
 
PROMEKI_NAMESPACE_END
 
#endif // PROMEKI_ENABLE_PROAV