// Maximum size of a frame e.g. 1024 * 1024
const long MAX_FRAME_SIZE = 1048576;
const long MAX_FRAME_COUNT = 50;

// A struct representing a single Frame.
// Consists of the timestamp when the Frame was captured
// and the actual frame data as a vector of bytes of MAX_FRAME_SIZE
struct CameraFrame {

    unsigned long long timestamp;
    sequence<octet, MAX_FRAME_SIZE> frameData;
};

// A struct representing a Frame snapshot.
// Consist of a unique identifier of the snapshot ( Event that triggered it)
// and a vector of Frames of max size of MAX_IMAGES
struct CameraDataItem {

    // This allows FWE to identify the data item i.e. if it was requested
    // or simply was put on the topic based on the ADAS system decision e.g. unknown object
    // set to zero if this was triggered by the ADAS system.
    string dataItemId;
    // Metadata if any
    unsigned long metadata;
    // Frame Buffer which consists of a sequence of individual frames.
    sequence <CameraFrame,MAX_FRAME_COUNT> frameBuffer;
};


struct CameraDataRequest {

    // Unique Identifier of the request. Should be kept during response.
    unsigned long dataItemId;
    // Options: Should include settings around compression or cropping if needed. Else default is raw.
    map<octet, octet> options;

    // Set of offsets building up a time interval.
    // The frame service should return all frames that were captured by the camera sensor
    // between sample info source timestamp - negativeOffsetMs and + positiveOffsetMs
    // Negative offset representing the number of milliseconds before the Sample Info source timestamp
    unsigned long negativeOffsetMs;
    // Positive offset representing the number of milliseconds after the Sample Info source timestamp
    unsigned long positiveOffsetMs;
};