command_field.h

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// BSD 3-Clause License
// Copyright (c) 2021-2025, 🍀☀🌕🌥 🌊
// See the LICENSE file in the project root for full license information.
 
#ifndef PACS_NETWORK_DIMSE_COMMAND_FIELD_HPP
#define PACS_NETWORK_DIMSE_COMMAND_FIELD_HPP
 
#include <cstdint>
#include <string_view>
 
namespace kcenon::pacs::network::dimse {
 
enum class command_field : uint16_t {
    // ========================================================================
    // DIMSE-C Commands (Composite SOP Classes)
    // ========================================================================
 
    c_store_rq = 0x0001,
    c_store_rsp = 0x8001,
 
    c_get_rq = 0x0010,
    c_get_rsp = 0x8010,
 
    c_find_rq = 0x0020,
    c_find_rsp = 0x8020,
 
    c_move_rq = 0x0021,
    c_move_rsp = 0x8021,
 
    c_echo_rq = 0x0030,
    c_echo_rsp = 0x8030,
 
    c_cancel_rq = 0x0FFF,
 
    // ========================================================================
    // DIMSE-N Commands (Normalized SOP Classes)
    // ========================================================================
 
    n_event_report_rq = 0x0100,
    n_event_report_rsp = 0x8100,
 
    n_get_rq = 0x0110,
    n_get_rsp = 0x8110,
 
    n_set_rq = 0x0120,
    n_set_rsp = 0x8120,
 
    n_action_rq = 0x0130,
    n_action_rsp = 0x8130,
 
    n_create_rq = 0x0140,
    n_create_rsp = 0x8140,
 
    n_delete_rq = 0x0150,
    n_delete_rsp = 0x8150,
};
 
 
[[nodiscard]] constexpr bool is_request(command_field cmd) noexcept {
    return (static_cast<uint16_t>(cmd) & 0x8000) == 0;
}
 
[[nodiscard]] constexpr bool is_response(command_field cmd) noexcept {
    return (static_cast<uint16_t>(cmd) & 0x8000) != 0;
}
 
[[nodiscard]] constexpr bool is_dimse_c(command_field cmd) noexcept {
    // Remove response bit (0x8000) and check range
    const auto value = static_cast<uint16_t>(cmd) & 0x7FFF;
    return value <= 0x0030 || value == 0x0FFF;
}
 
[[nodiscard]] constexpr bool is_dimse_n(command_field cmd) noexcept {
    // Remove response bit (0x8000) and check range
    const auto value = static_cast<uint16_t>(cmd) & 0x7FFF;
    return value >= 0x0100 && value <= 0x0150;
}
 
[[nodiscard]] constexpr command_field get_response_command(
    command_field request) noexcept {
    return static_cast<command_field>(static_cast<uint16_t>(request) | 0x8000);
}
 
[[nodiscard]] constexpr command_field get_request_command(
    command_field response) noexcept {
    return static_cast<command_field>(static_cast<uint16_t>(response) & 0x7FFF);
}
 
[[nodiscard]] constexpr std::string_view to_string(command_field cmd) noexcept {
    switch (cmd) {
        case command_field::c_store_rq: return "C-STORE-RQ";
        case command_field::c_store_rsp: return "C-STORE-RSP";
        case command_field::c_get_rq: return "C-GET-RQ";
        case command_field::c_get_rsp: return "C-GET-RSP";
        case command_field::c_find_rq: return "C-FIND-RQ";
        case command_field::c_find_rsp: return "C-FIND-RSP";
        case command_field::c_move_rq: return "C-MOVE-RQ";
        case command_field::c_move_rsp: return "C-MOVE-RSP";
        case command_field::c_echo_rq: return "C-ECHO-RQ";
        case command_field::c_echo_rsp: return "C-ECHO-RSP";
        case command_field::c_cancel_rq: return "C-CANCEL-RQ";
        case command_field::n_event_report_rq: return "N-EVENT-REPORT-RQ";
        case command_field::n_event_report_rsp: return "N-EVENT-REPORT-RSP";
        case command_field::n_get_rq: return "N-GET-RQ";
        case command_field::n_get_rsp: return "N-GET-RSP";
        case command_field::n_set_rq: return "N-SET-RQ";
        case command_field::n_set_rsp: return "N-SET-RSP";
        case command_field::n_action_rq: return "N-ACTION-RQ";
        case command_field::n_action_rsp: return "N-ACTION-RSP";
        case command_field::n_create_rq: return "N-CREATE-RQ";
        case command_field::n_create_rsp: return "N-CREATE-RSP";
        case command_field::n_delete_rq: return "N-DELETE-RQ";
        case command_field::n_delete_rsp: return "N-DELETE-RSP";
        default: return "UNKNOWN";
    }
}
 
 
}  // namespace kcenon::pacs::network::dimse
 
#endif  // PACS_NETWORK_DIMSE_COMMAND_FIELD_HPP