/*
 * 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 nrLDPC_init_mem.h
 * \brief Defines the function to initialize the LDPC decoder and sets correct LUTs.
 * \author Sebastian Wagner (TCL Communications) Email: <mailto:sebastian.wagner@tcl.com>
 * \date 07-12-2018
 * \version 1.0
 * \note
 * \warning
 */

#ifndef __NR_LDPC_INIT_MEM__H__
#define __NR_LDPC_INIT_MEM__H__

#include <stdlib.h>
#include "nrLDPC_types.h"

/**
   \brief Allocates 32 byte aligned memory and initializes to zero
   \param size Input size in bytes
   \return Pointer to memory
*/
static inline void* malloc32_clear(size_t size)
{
    void* ptr = (void*) memalign(32, size+32);
    memset(ptr, 0, size);
    return ptr;
}

/**
   \brief Allocates and initializes the internal decoder processing buffers
   \param p_decParams Pointer to decoder parameters
   \param p_lut Pointer to decoder LUTs
   \return Number of LLR values
*/
static inline t_nrLDPC_procBuf* nrLDPC_init_mem(void)
{
    t_nrLDPC_procBuf* p_procBuf = (t_nrLDPC_procBuf*) malloc32_clear(sizeof(t_nrLDPC_procBuf));

    if (p_procBuf)
    {
        p_procBuf->cnProcBuf    = (int8_t*) malloc32_clear(NR_LDPC_SIZE_CN_PROC_BUF*sizeof(int8_t));
        p_procBuf->cnProcBufRes = (int8_t*) malloc32_clear(NR_LDPC_SIZE_CN_PROC_BUF*sizeof(int8_t));
        p_procBuf->bnProcBuf    = (int8_t*) malloc32_clear(NR_LDPC_SIZE_BN_PROC_BUF*sizeof(int8_t));
        p_procBuf->bnProcBufRes = (int8_t*) malloc32_clear(NR_LDPC_SIZE_BN_PROC_BUF*sizeof(int8_t));
        p_procBuf->llrRes       = (int8_t*) malloc32_clear(NR_LDPC_MAX_NUM_LLR     *sizeof(int8_t));
        p_procBuf->llrProcBuf   = (int8_t*) malloc32_clear(NR_LDPC_MAX_NUM_LLR     *sizeof(int8_t));
    }

    return(p_procBuf);
}

static inline void nrLDPC_free_mem(t_nrLDPC_procBuf* p_procBuf)
{
    free(p_procBuf->cnProcBuf);
    free(p_procBuf->cnProcBufRes);
    free(p_procBuf->bnProcBuf);
    free(p_procBuf->bnProcBufRes);
    free(p_procBuf->llrRes);
    free(p_procBuf->llrProcBuf);

    free(p_procBuf);
}
#endif
