tofi_util.c

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/*
 * BSD 3-Clause License
 *
 * Copyright (c) 2019, Analog Devices, Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this
 *    list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *
 * 3. Neither the name of the copyright holder nor the names of its
 *    contributors may be used to endorse or promote products derived from
 *    this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
#include "tofi_util.h"
 
#include <math.h>
 
#include "string.h"
 
#define MAX_PATH_SIZE 512
#ifdef _WIN32
#include <Windows.h>
#elif __unix
#include <unistd.h>
#endif
 
#ifdef HEXAGON
#ifndef ION_HEAP_ID_SYSTEM
#define ION_HEAP_ID_SYSTEM 25
#endif
#define rpcmem_alloc(a, b, c) memalign(VLEN * 2, (c))
#endif
 
uint32_t TransformationXyzToZ(uint32_t n_rows, uint32_t n_cols,
                              const Point3I *p_xyz_image_data,
                              uint16_t *p_zdepth_image_data) {
    if (p_xyz_image_data == NULL || p_zdepth_image_data == NULL ||
        n_rows == 0 || n_cols == 0)
        return ADI_TOFI_NULL_ARGUMENT;
 
    for (int i = 0; i < n_cols * n_rows; i++) {
        p_zdepth_image_data[i] = p_xyz_image_data[i].c;
    }
    return ADI_TOFI_SUCCESS;
}
 
uint32_t GetDataFileSize(char *file_name) {
    uint32_t size = 0;
    FILE *fp = fopen(file_name, "rb");
    if (fp != NULL) {
        fseek(fp, 0, SEEK_END); // seek to end of file
        size = ftell(fp);       // get current file pointer
        rewind(fp);             // seek back to beginning of file
        fclose(fp);
    }
    return size;
}
 
FileData LoadFileContents(char *filename) {
    const unsigned char *p = NULL;
    size_t size = 0;
    FILE *f = fopen(filename, "rb");
 
    if (f) {
        if (0 == fseek(f, 0L, SEEK_END)) {
            size = ftell(f);
            rewind(f);
#ifdef HEXAGON
            p = (unsigned char *)rpcmem_alloc(ION_HEAP_ID_SYSTEM,
                                              RPCMEM_DEFAULT_FLAGS, size);
#else
            p = (unsigned char *)malloc(size);
#endif
            if (p) {
                if (1 != fread((void *)p, size, 1, f) || size == 0) {
                    fprintf(stderr, "Failed to read data file %s.\n", filename);
                    free((void *)p);
                    p = 0;
                    size = 0;
                }
            } else {
                fprintf(stderr,
                        "Failed to allocate memory for reading data file %s.\n",
                        filename);
            }
        } else {
            fprintf(stderr, "Failed to seek in data file %s.\n", filename);
        }
        fclose(f);
    } else {
        fprintf(stderr, "Failed to open data file %s.\n", filename);
    }
    FileData ret_val = {(unsigned char *)p, size};
    return (ret_val);
}
 
uint32_t WriteDataToFile(char *file_name, uint8_t *buffer,
                         uint32_t buffer_size) {
    uint32_t status = ADI_TOFI_ERROR;
 
    FILE *fp = fopen(file_name, "wb");
 
    if (fp != NULL) {
        size_t n_bytes_written =
            fwrite(buffer, sizeof(uint8_t), buffer_size, fp);
        fclose(fp);
 
        if (n_bytes_written == buffer_size) {
            status = ADI_TOFI_SUCCESS;
        } else {
            status = ADI_TOFI_FILE_WRITE;
        }
    } else
        status = ADI_TOFI_OPEN_FILE;
 
    return status;
}
 
uint32_t GetProcessPath(char *process_path, uint32_t path_size) {
#ifdef _WIN32
    uint32_t status = 0;
    char path[MAX_PATH_SIZE];
    status = GetModuleFileName(NULL, path, path_size);
    if (status == 0 || status == path_size)
        return ADI_TOFI_ERROR;
    char *last_slash = strrchr(path, '\\');
    strncpy(process_path, path, last_slash - path + 1);
#elif __unix
    uint32_t status = 0;
    char path[MAX_PATH_SIZE];
    status = readlink("/proc/self/exe", path, path_size);
    if (status == 0 || status == path_size)
        return ADI_TOFI_ERROR;
    char *last_slash = strrchr(path, '/');
    strncpy(process_path, path, last_slash - path + 1);
#endif
    return ADI_TOFI_SUCCESS;
}
 
uint32_t Gcd(uint32_t a, uint32_t b) {
    if (a == 0)
        return b;
    return Gcd(b % a, a);
}