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openairinterface5g/openair2/LAYER2/RLC/rlc.h
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/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
/*! \file rlc.h
* \brief This file, and only this file must be included by external code that interact with RLC layer.
* \author GAUTHIER Lionel
* \date 2010-2011
* \version
* \note
* \bug
* \warning
*/
/** @defgroup _rlc_impl_ RLC
* @ingroup _oai2
* @{
*/
#ifndef __RLC_H__
# define __RLC_H__
# include "platform_types.h"
#include "common/platform_constants.h"
# include "hashtable.h"
# include "LTE_asn_constant.h"
# include "common/utils/LOG/log.h"
# include "mem_block.h"
//# include "PHY/defs.h"
# include "LTE_RLC-Config.h"
# include "LTE_DRB-ToAddMod.h"
# include "LTE_DRB-ToAddModList.h"
# include "LTE_SRB-ToAddMod.h"
# include "LTE_SRB-ToAddModList.h"
# include "LTE_DRB-ToReleaseList.h"
# include "LTE_PMCH-InfoList-r9.h"
//-----------------------------------------------------------------------------
#define RLC_OP_STATUS_OK 1
#define RLC_OP_STATUS_BAD_PARAMETER 22
#define RLC_OP_STATUS_INTERNAL_ERROR 2
#define RLC_OP_STATUS_OUT_OF_RESSOURCES 3
#define RLC_MUI_UNDEFINED (mui_t)0
#define RLC_RB_UNALLOCATED (rb_id_t)0
#define RLC_LC_UNALLOCATED (logical_chan_id_t)0
//-----------------------------------------------------------------------------
// PUBLIC RLC CONSTANTS
//-----------------------------------------------------------------------------
typedef enum rlc_confirm_e {
RLC_SDU_CONFIRM_NO = 0,
RLC_SDU_CONFIRM_YES = 1,
} rlc_confirm_t;
typedef enum rlc_mode_e {
RLC_MODE_NONE = 0,
RLC_MODE_AM = 1,
RLC_MODE_UM = 2,
RLC_MODE_TM = 4
} rlc_mode_t;
/*! \struct mac_rlc_status_resp_t
* \brief Primitive exchanged between RLC and MAC informing about the buffer occupancy of the RLC protocol instance.
*/
typedef struct {
rlc_buffer_occupancy_t bytes_in_buffer; /*!< \brief Bytes buffered in RLC protocol instance. */
rlc_buffer_occupancy_t pdus_in_buffer; /*!< \brief Number of PDUs buffered in RLC protocol instance (OBSOLETE). */
frame_t head_sdu_creation_time; /*!< \brief Head SDU creation time. */
sdu_size_t head_sdu_remaining_size_to_send; /*!< \brief remaining size of sdu: could be the total size or the remaining size of already segmented sdu */
bool head_sdu_is_segmented; /*!< \brief 0 if head SDU has not been segmented, 1 if already segmented */
} mac_rlc_status_resp_t;
//-----------------------------------------------------------------------------
// PRIVATE INTERNALS OF RLC
//-----------------------------------------------------------------------------
#define RLC_MAX_MBMS_LC (LTE_maxSessionPerPMCH * LTE_maxServiceCount)
#define RLC_MAX_LC ((max_val_LTE_DRB_Identity+1)* MAX_MOBILES_PER_ENB)
extern void (*rlc_rrc_data_ind)(
const protocol_ctxt_t *const ctxtP,
const rb_id_t rb_idP,
const sdu_size_t sdu_sizeP,
const uint8_t *const sduP) __attribute__ ((aligned(32)));
extern void (*rlc_rrc_data_conf)(
const protocol_ctxt_t *const ctxtP,
const rb_id_t rb_idP,
const mui_t muiP,
const rlc_tx_status_t statusP) __attribute__ ((aligned(32)));
typedef void (rrc_data_ind_cb_t)(
const protocol_ctxt_t *const ctxtP,
const rb_id_t rb_idP,
const sdu_size_t sdu_sizeP,
const uint8_t *const sduP);
typedef void (rrc_data_conf_cb_t)(
const protocol_ctxt_t *const ctxtP,
const rb_id_t rb_idP,
const mui_t muiP,
const rlc_tx_status_t statusP);
//-----------------------------------------------------------------------------
// PUBLIC INTERFACE WITH RRC
//-----------------------------------------------------------------------------
/*! \fn rlc_op_status_t rrc_rlc_config_asn1_req (const protocol_ctxt_t* const ctxtP, const srb_flag_t srb_flagP, const SRB_ToAddMod_t* const srb2addmod, const DRB_ToAddModList_t* const drb2add_listP, const DRB_ToReleaseList_t* const drb2release_listP, const PMCH_InfoList_r9_t * const pmch_info_listP)
* \brief Function for RRC to configure a Radio Bearer.
* \param[in] ctxtP Running context.
* \param[in] srb2add_listP SRB configuration list to be created.
* \param[in] drb2add_listP DRB configuration list to be created.
* \param[in] drb2release_listP DRB configuration list to be released.
* \param[in] pmch_info_listP eMBMS pmch info list to be created.
* \return A status about the processing, OK or error code.
*/
rlc_op_status_t rrc_rlc_config_asn1_req (
const protocol_ctxt_t *const,
const LTE_SRB_ToAddModList_t *const,
const LTE_DRB_ToAddModList_t *const,
const LTE_DRB_ToReleaseList_t *const,
const LTE_PMCH_InfoList_r9_t *const pmch_info_listP,
const uint32_t,
const uint32_t );
/*! \fn rrc_rlc_remove_ue
* \brief Remove all RLC protocol instances from all radio bearers allocated to a UE.
* \param[in] ctxtP Running context.
* \return A status about the processing, OK or error code.
*/
rlc_op_status_t rrc_rlc_remove_ue(const protocol_ctxt_t *const ctxtP);
/*! \fn rlc_op_status_t rrc_rlc_config_req (
const protocol_ctxt_t* const ctxtP,
const srb_flag_t srb_flagP,
const MBMS_flag_t MBMS_flagP,
config_action_t actionP,
const rb_id_t rb_idP,
rlc_info_t rlc_infoP)
* \brief Function for RRC to configure a Radio Bearer.
* \param[in] ctxtP Running context.
* \param[in] srb_flagP Flag to indicate SRB (1) or DRB (0)
* \param[in] MBMS_flag Flag to indicate whether this is an MBMS service (1) or not (0)
* \param[in] actionP Action for this radio bearer (add, modify, remove).
* \param[in] rb_idP Radio bearer identifier.
* \return A status about the processing, OK or error code.
*/
rlc_op_status_t rrc_rlc_config_req(const protocol_ctxt_t *const ctxtP,
const srb_flag_t srb_flagP,
const MBMS_flag_t MBMS_flag,
config_action_t actionP,
const rb_id_t rb_idP);
/*! \fn rrc_rlc_data_req
* \brief Function for RRC to send a SDU through a Signalling Radio Bearer.
* \param[in] ctxtP Running context.
* \param[in] MBMS_flag Flag to indicate whether this is an MBMS service (1) or not (0)
* \param[in] rb_idP Radio bearer identifier.
* \param[in] muiP Message Unit identifier.
* \param[in] confirmP Boolean, is confirmation requested.
* \param[in] sdu_sizeP Size of SDU in bytes.
* \param[in] sduP SDU.
* \return A status about the processing, OK or error code.
*/
rlc_op_status_t rrc_rlc_data_req(const protocol_ctxt_t *const ctxtP,
const MBMS_flag_t MBMS_flag,
const rb_id_t rb_idP,
mui_t muiP,
confirm_t confirmP,
sdu_size_t sdu_sizeP,
char *sduP);
//-----------------------------------------------------------------------------
// PUBLIC INTERFACE WITH MAC
//-----------------------------------------------------------------------------
/*! \fn tbs_size_t mac_rlc_data_req (const module_id_t mod_idP, const rnti_t rntiP, const frame_t frameP, const MBMS_flag_t MBMS_flagP, logical_chan_id_t rb_idP, char* bufferP)
* \brief Interface with MAC layer, map data request to the RLC corresponding to the radio bearer.
* \param [in] mod_idP Virtualized module identifier.
* \param [in] rntiP UE identifier.
* \param [in] frameP Frame index
* \param [in] eNB_flagP Flag to indicate eNB (1) or UE (0)
* \param [in] MBMS_flagP Flag to indicate whether this is the MBMS service (1) or not (0)
* \param [in] rb_idP Radio bearer identifier.
* \param [in] tb_sizeP Requested Tx TBS in bytes.
* \param [in,out] bufferP Memory area to fill with the bytes requested by MAC.
* \return A status about the processing, OK or error code.
*/
tbs_size_t mac_rlc_data_req (const module_id_t, const rnti_t, const eNB_index_t, const frame_t, const eNB_flag_t, const MBMS_flag_t, logical_chan_id_t, const tb_size_t,char *
,const uint32_t sourceL2Id
,const uint32_t destinationL2Id
);
/*! \fn void mac_rlc_data_ind (const module_id_t mod_idP, const rnti_t rntiP, const frame_t frameP, const eNB_flag_t eNB_flagP, const MBMS_flag_t MBMS_flagP, logical_chan_id_t rb_idP, uint32_t frameP, char* bufferP, tb_size_t tb_sizeP, num_tb_t num_tbP, crc_t *crcs)
* \brief Interface with MAC layer, deserialize the transport blocks sent by MAC, then map data indication to the RLC instance corresponding to the radio bearer identifier.
* \param[in] mod_idP Virtualized module identifier.
* \param[in] rntiP UE identifier.
* \param[in] frameP Frame index
* \param[in] eNB_flagP Flag to indicate eNB (1) or UE (0)
* \param[in] MBMS_flagP Flag to indicate whether this is the MBMS service (1) or not (0)
* \param[in] rb_idP Radio bearer identifier.
* \param[in] bufferP Memory area containing the transport blocks sent by MAC.
* \param[in] tb_sizeP Size of a transport block in bits.
* \param[in] num_tbP Number of transport blocks.
* \param[in] crcs Array of CRC decoding.
*/
void mac_rlc_data_ind (const module_id_t, const rnti_t, const eNB_index_t,const frame_t, const eNB_flag_t, const MBMS_flag_t, logical_chan_id_t, char *, tb_size_t, num_tb_t,
crc_t * );
/*! \fn mac_rlc_status_resp_t mac_rlc_status_ind (const module_id_t mod_idP, const rnti_t rntiP, const frame_t frameP, const sub_frame_t subframeP, const eNB_flag_t eNB_flagP, const MBMS_flag_t MBMS_flagP, logical_chan_id_t rb_idP)
* \brief Interface with MAC layer, request and set the number of bytes scheduled for transmission by the RLC instance corresponding to the radio bearer identifier.
* \param[in] mod_idP Virtualized module identifier.
* \param[in] rntiP UE identifier.
* \param[in] frameP Frame index.
* \param[in] subframeP SubFrame index.
* \param[in] eNB_flagP Flag to indicate eNB operation (1 true, 0 false)
* \param[in] MBMS_flagP Flag to indicate whether this is the MBMS service (1) or not (0)
* \param[in] rb_idP Radio bearer identifier.
* \return The maximum number of bytes that the RLC instance can send in the next transmission sequence.
*/
mac_rlc_status_resp_t mac_rlc_status_ind (const module_id_t, const rnti_t, const eNB_index_t, const frame_t, const sub_frame_t, const eNB_flag_t, const MBMS_flag_t, logical_chan_id_t
,const uint32_t sourceL2Id
,const uint32_t destinationL2Id
);
/*! \fn mac_rlc_get_buffer_occupancy_ind
* \brief Interface with MAC layer, UE only: request and get the number of bytes scheduled for transmission by the RLC instance
* corresponding to the radio bearer identifier. \param[in] mod_idP Virtualized module identifier. \param[in] rntiP UE
* identifier. \param[in] frameP Frame index. \param[in] subframeP SubFrame index. \param[in] eNB_flagP Flag
* to indicate eNB operation (1 true, 0 false) \param[in] channel_idP Logical Channel identifier. \return The maximum
* number of bytes that the RLC instance can send in the next transmission sequence.
*/
rlc_buffer_occupancy_t mac_rlc_get_buffer_occupancy_ind(const module_id_t mod_idP,
const rnti_t rntiP,
const eNB_index_t enb,
const frame_t frameP,
const sub_frame_t subframeP,
const eNB_flag_t eNB_flagP,
const logical_chan_id_t channel_idP);
//-----------------------------------------------------------------------------
// RLC methods
//-----------------------------------------------------------------------------
/*
* Prints incoming byte stream in hexadecimal and readable form
*
* @param componentP Component identifier, see macros defined in UTIL/LOG/log.h
* @param dataP Pointer to data buffer to be displayed
* @param sizeP Number of octets in data buffer
*/
void rlc_util_print_hex_octets(
const comp_name_t componentP,
unsigned char *const dataP,
const signed long sizeP);
/*! \fn rlc_op_status_t rlc_data_req (const protocol_ctxt_t* const ctxtP, const srb_flag_t srb_flagP, const MBMS_flag_t MBMS_flagP, const rb_id_t rb_idP, mui_t muiP, confirm_t confirmP, sdu_size_t sdu_sizeP, mem_block_t *sduP)
* \brief Interface with higher layers, map request to the RLC corresponding to the radio bearer.
* \param[in] ctxtP Running context.
* \param[in] srb_flagP Flag to indicate SRB (1) or DRB (0)
* \param[in] MBMS_flagP Flag to indicate whether this is the MBMS service (1) or not (0)
* \param[in] rb_idP Radio bearer identifier.
* \param[in] muiP Message Unit identifier.
* \param[in] confirmP Boolean, is confirmation requested.
* \param[in] sdu_sizeP Size of SDU in bytes.
* \param[in] sduP SDU.
* \return A status about the processing, OK or error code.
*/
rlc_op_status_t rlc_data_req (
const protocol_ctxt_t *const,
const srb_flag_t,
const MBMS_flag_t,
const rb_id_t,
const mui_t,
const confirm_t,
const sdu_size_t,
mem_block_t *const,
const uint32_t *const,
const uint32_t *const
);
/*! \fn void rlc_data_ind (const protocol_ctxt_t* const ctxtP, const srb_flag_t srb_flagP, const MBMS_flag_t MBMS_flagP, const rb_id_t rb_idP, const sdu_size_t sdu_sizeP, mem_block_t* sduP) {
* \brief Interface with higher layers, route SDUs coming from RLC protocol instances to upper layer instance.
* \param[in] ctxtP Running context.
* \param[in] srb_flagP Flag to indicate SRB (1) or DRB (0)
* \param[in] MBMS_flagP Flag to indicate whether this is the MBMS service (1) or not (0)
* \param[in] rb_idP Radio bearer identifier.
* \param[in] sdu_sizeP Size of SDU in bytes.
* \param[in] sduP SDU.
*/
void rlc_data_ind(
const protocol_ctxt_t *const,
const srb_flag_t,
const MBMS_flag_t,
const rb_id_t,
const sdu_size_t,
mem_block_t *const);
/*! \fn void rlc_data_conf (const protocol_ctxt_t* const ctxtP, const srb_flag_t srb_flagP, const rb_id_t rb_idP, const mui_t muiP, const rlc_tx_status_t statusP)
* \brief Interface with higher layers, confirm to upper layer the transmission status for a SDU stamped with a MUI, scheduled for transmission.
* \param[in] ctxtP Running context.
* \param[in] srb_flagP Flag to indicate SRB (1) or DRB (0)
* \param[in] rb_idP Radio bearer identifier.
* \param[in] muiP Message Unit identifier.
* \param[in] statusP Status of the transmission (RLC_SDU_CONFIRM_YES, RLC_SDU_CONFIRM_NO).
*/
void rlc_data_conf(
const protocol_ctxt_t *const,
const srb_flag_t,
const rb_id_t,
const mui_t,
const rlc_tx_status_t );
/*! \fn rlc_op_status_t rlc_stat_req (
const protocol_ctxt_t* const ctxtP,
const srb_flag_t srb_flagP,
const rb_id_t rb_idP,
unsigned int* stat_rlc_mode,
unsigned int* stat_tx_pdcp_sdu,
unsigned int* stat_tx_pdcp_bytes,
unsigned int* stat_tx_pdcp_sdu_discarded,
unsigned int* stat_tx_pdcp_bytes_discarded,
unsigned int* stat_tx_data_pdu,
unsigned int* stat_tx_data_bytes,
unsigned int* stat_tx_retransmit_pdu_by_status,
unsigned int* stat_tx_retransmit_bytes_by_status,
unsigned int* stat_tx_retransmit_pdu,
unsigned int* stat_tx_retransmit_bytes,
unsigned int* stat_tx_control_pdu,
unsigned int* stat_tx_control_bytes,
unsigned int* stat_rx_pdcp_sdu,
unsigned int* stat_rx_pdcp_bytes,
unsigned int* stat_rx_data_pdus_duplicate,
unsigned int* stat_rx_data_bytes_duplicate,
unsigned int* stat_rx_data_pdu,
unsigned int* stat_rx_data_bytes,
unsigned int* stat_rx_data_pdu_dropped,
unsigned int* stat_rx_data_bytes_dropped,
unsigned int* stat_rx_data_pdu_out_of_window,
unsigned int* stat_rx_data_bytes_out_of_window,
unsigned int* stat_rx_control_pdu,
unsigned int* stat_rx_control_bytes,
unsigned int* stat_timer_reordering_timed_out,
unsigned int* stat_timer_poll_retransmit_timed_out,
unsigned int* stat_timer_status_prohibit_timed_out)
* \brief Request RLC statistics of a particular radio bearer.
* \param[in] ctxtP Running context.
* \param[in] srb_flagP Flag to indicate signalling radio bearer (1) or data radio bearer (0).
* \param[in] rb_idP .
* \param[out] stat_rlc_mode RLC mode
* \param[out] stat_tx_pdcp_sdu Number of SDUs coming from upper layers.
* \param[out] stat_tx_pdcp_bytes Number of bytes coming from upper layers.
* \param[out] stat_tx_pdcp_sdu_discarded Number of discarded SDUs coming from upper layers.
* \param[out] stat_tx_pdcp_bytes_discarded Number of discarded bytes coming from upper layers.
* \param[out] stat_tx_data_pdu Number of transmitted data PDUs to lower layers.
* \param[out] stat_tx_data_bytes Number of transmitted data bytes to lower layers.
* \param[out] stat_tx_retransmit_pdu_by_status Number of re-transmitted data PDUs due to status reception.
* \param[out] stat_tx_retransmit_bytes_by_status Number of re-transmitted data bytes due to status reception.
* \param[out] stat_tx_retransmit_pdu Number of re-transmitted data PDUs to lower layers.
* \param[out] stat_tx_retransmit_bytes Number of re-transmitted data bytes to lower layers.
* \param[out] stat_tx_control_pdu Number of transmitted control PDUs to lower layers.
* \param[out] stat_tx_control_bytes Number of transmitted control bytes to lower layers.
* \param[out] stat_rx_pdcp_sdu Number of SDUs delivered to upper layers.
* \param[out] stat_rx_pdcp_bytes Number of bytes delivered to upper layers.
* \param[out] stat_rx_data_pdus_duplicate Number of duplicate PDUs received.
* \param[out] stat_rx_data_bytes_duplicate Number of duplicate bytes received.
* \param[out] stat_rx_data_pdu Number of received PDUs from lower layers.
* \param[out] stat_rx_data_bytes Number of received bytes from lower layers.
* \param[out] stat_rx_data_pdu_dropped Number of received PDUs from lower layers, then dropped.
* \param[out] stat_rx_data_bytes_dropped Number of received bytes from lower layers, then dropped.
* \param[out] stat_rx_data_pdu_out_of_window Number of data PDUs received out of the receive window.
* \param[out] stat_rx_data_bytes_out_of_window Number of data bytes received out of the receive window.
* \param[out] stat_rx_control_pdu Number of control PDUs received.
* \param[out] stat_rx_control_bytes Number of control bytes received.
* \param[out] stat_timer_reordering_timed_out Number of times the timer "reordering" has timed-out.
* \param[out] stat_timer_poll_retransmit_timed_out Number of times the timer "poll_retransmit" has timed-out.
* \param[out] stat_timer_status_prohibit_timed_out Number of times the timer "status_prohibit" has timed-out.
*/
rlc_op_status_t rlc_stat_req (
const protocol_ctxt_t *const ctxtP,
const srb_flag_t srb_flagP,
const rb_id_t rb_idP,
unsigned int *const stat_rlc_mode,
unsigned int *const stat_tx_pdcp_sdu,
unsigned int *const stat_tx_pdcp_bytes,
unsigned int *const stat_tx_pdcp_sdu_discarded,
unsigned int *const stat_tx_pdcp_bytes_discarded,
unsigned int *const stat_tx_data_pdu,
unsigned int *const stat_tx_data_bytes,
unsigned int *const stat_tx_retransmit_pdu_by_status,
unsigned int *const stat_tx_retransmit_bytes_by_status,
unsigned int *const stat_tx_retransmit_pdu,
unsigned int *const stat_tx_retransmit_bytes,
unsigned int *const stat_tx_control_pdu,
unsigned int *const stat_tx_control_bytes,
unsigned int *const stat_rx_pdcp_sdu,
unsigned int *const stat_rx_pdcp_bytes,
unsigned int *const stat_rx_data_pdus_duplicate,
unsigned int *const stat_rx_data_bytes_duplicate,
unsigned int *const stat_rx_data_pdu,
unsigned int *const stat_rx_data_bytes,
unsigned int *const stat_rx_data_pdu_dropped,
unsigned int *const stat_rx_data_bytes_dropped,
unsigned int *const stat_rx_data_pdu_out_of_window,
unsigned int *const stat_rx_data_bytes_out_of_window,
unsigned int *const stat_rx_control_pdu,
unsigned int *const stat_rx_control_bytes,
unsigned int *const stat_timer_reordering_timed_out,
unsigned int *const stat_timer_poll_retransmit_timed_out,
unsigned int *const stat_timer_status_prohibit_timed_out);
/*! \fn int rlc_module_init(int enb_flag)
* \brief RAZ the memory of the RLC layer, initialize the memory pool manager (mem_block_t structures mainly used in RLC module).
*/
int rlc_module_init(int enb_flag);
void du_rlc_data_req(const protocol_ctxt_t *const ctxt_pP,
const srb_flag_t srb_flagP,
const MBMS_flag_t MBMS_flagP,
const rb_id_t rb_idP,
const mui_t muiP,
confirm_t confirmP,
sdu_size_t sdu_sizeP,
mem_block_t *sdu_pP);
/** @} */
#define RLC_FG_COLOR_BLACK "\e[0;30m"
#define RLC_FG_COLOR_RED "\e[0;31m"
#define RLC_FG_COLOR_GREEN "\e[0;32m"
#define RLC_FG_COLOR_ORANGE "\e[0;33m"
#define RLC_FG_COLOR_BLUE "\e[0;34m"
#define RLC_FG_COLOR_MAGENTA "\e[0;35m"
#define RLC_FG_COLOR_CYAN "\e[0;36m"
#define RLC_FG_COLOR_GRAY_BLACK "\e[0;37m"
#define RLC_FG_COLOR_DEFAULT "\e[0;39m"
#define RLC_FG_BRIGHT_COLOR_DARK_GRAY "\e[1;30m"
#define RLC_FG_BRIGHT_COLOR_RED "\e[1;31m"
#define RLC_FG_BRIGHT_COLOR_GREEN "\e[1;32m"
#define RLC_FG_BRIGHT_COLOR_YELLOW "\e[1;33m"
#define RLC_FG_BRIGHT_COLOR_BLUE "\e[1;34m"
#define RLC_FG_BRIGHT_COLOR_MAGENTA "\e[1;35m"
#define RLC_FG_BRIGHT_COLOR_CYAN "\e[1;36m"
#define RLC_FG_BRIGHT_COLOR_WHITE "\e[1;37m"
#define RLC_FG_BRIGHT_COLOR_DEFAULT "\e[0;39m"
#define RLC_REVERSE_VIDEO "\e[7m"
#define RLC_NORMAL_VIDEO "\e[27m"
#endif