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input_file.c
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input_file.c
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// SPDX-License-Identifier: GPL-3.0-or-later
/* glide64_cache_extract, Glide64 TexCache Extraction tool for debugging
*
* SPDX-FileCopyrightText: Sven Eckelmann <sven@narfation.org>
*/
#include "glide64_cache_extract.h"
#include <errno.h>
#include <inttypes.h>
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
static int get_buffer(void *buffer, size_t size, int print_error)
{
size_t ret;
ret = fread(buffer, 1, size, globals.in);
if (ret == size)
return 0;
if (ferror(globals.in) && print_error)
fprintf(stderr, "Error while reading input\n");
if (feof(globals.in) && print_error)
fprintf(stderr, "File stream ended to early\n");
return -EIO;
}
int get_buffer_endian(void *buffer, size_t size, int print_error)
{
int ret;
ret = get_buffer(buffer, size, print_error);
if (ret < 0)
return ret;
switch (size) {
case 1:
/* no endian problems */
break;
case 2:
*(uint16_t *)buffer = le16toh(*(uint16_t *)buffer);
break;
case 4:
*(uint32_t *)buffer = le32toh(*(uint32_t *)buffer);
break;
case 8:
*(uint64_t *)buffer = le64toh(*(uint64_t *)buffer);
break;
default:
fprintf(stderr, "Invalid item size %u for endianness conversion\n", (unsigned int)size);
return -EINVAL;
}
return 0;
}
int convert_file(void)
{
struct glide64_file file;
int ret;
long pos = ftell(globals.in);
ret = get_buffer_endian(&file.checksum, sizeof(file.checksum), 0);
if (ret < 0)
return 0;
ret = get_item(file.width);
if (ret < 0) {
fprintf(stderr, "Failed to read file width\n");
return ret;
}
ret = get_item(file.height);
if (ret < 0) {
fprintf(stderr, "Failed to read file height\n");
return ret;
}
ret = get_item(file.format);
if (ret < 0) {
fprintf(stderr, "Failed to read file format\n");
return ret;
}
ret = get_item(file.smallLodLog2);
if (ret < 0) {
fprintf(stderr, "Failed to read file smallLodLog2\n");
return ret;
}
ret = get_item(file.largeLodLog2);
if (ret < 0) {
fprintf(stderr, "Failed to read file largeLodLog2\n");
return ret;
}
ret = get_item(file.aspectRatioLog2);
if (ret < 0) {
fprintf(stderr, "Failed to read file aspectRatioLog2\n");
return ret;
}
ret = get_item(file.tiles);
if (ret < 0) {
fprintf(stderr, "Failed to read file tiles\n");
return ret;
}
ret = get_item(file.untiled_width);
if (ret < 0) {
fprintf(stderr, "Failed to read file untiled_width\n");
return ret;
}
ret = get_item(file.untiled_height);
if (ret < 0) {
fprintf(stderr, "Failed to read file untiled_height\n");
return ret;
}
ret = get_item(file.is_hires_tex);
if (ret < 0) {
fprintf(stderr, "Failed to read file is_hires_tex\n");
return ret;
}
ret = get_item(file.size);
if (ret < 0) {
fprintf(stderr, "Failed to read filesize\n");
return ret;
}
if (globals.verbose >= VERBOSITY_FILE_HEADER) {
if (pos >= 0 && globals.in != stdin)
fprintf(stderr, "Offset: %#lx\n", pos);
fprintf(stderr, "File header:\n");
fprintf(stderr, "\tchecksum: 0x%016"PRIX64"\n", file.checksum);
fprintf(stderr, "\twidth: %"PRIu32"\n", file.width);
fprintf(stderr, "\theight: %"PRIu32"\n", file.height);
fprintf(stderr, "\tformat: %#"PRIx16"\n", file.format);
fprintf(stderr, "\tsmallLodLog2: %"PRIu32"\n", file.smallLodLog2);
fprintf(stderr, "\tlargeLodLog2: %"PRIu32"\n", file.largeLodLog2);
fprintf(stderr, "\taspectRatioLog2: %"PRIu32"\n", file.aspectRatioLog2);
fprintf(stderr, "\ttiles: %"PRIu32"\n", file.tiles);
fprintf(stderr, "\tuntiled_width: %"PRIu32"\n", file.untiled_width);
fprintf(stderr, "\tuntiled_height: %"PRIu32"\n", file.untiled_height);
fprintf(stderr, "\tis_hires_tex: %"PRIu8"\n", file.is_hires_tex);
fprintf(stderr, "\tsize: %"PRIu32"\n", file.size);
fprintf(stderr, "\n");
}
if (file.size <= 0) {
fprintf(stderr, "Invalid filesize\n");
return ret;
}
file.data = malloc(file.size);
if (!file.data) {
fprintf(stderr, "Could not allocate memory for file content\n");
return -ENOMEM;
}
ret = get_buffer(file.data, file.size, 1);
if (ret < 0) {
free(file.data);
fprintf(stderr, "Failed to read file content\n");
return ret;
}
ret = prepare_file(&file);
if (ret < 0) {
free(file.data);
fprintf(stderr, "Failed to prepare file for export\n");
if (globals.ignore_error)
return 0;
else
return ret;
}
ret = write_file(&file);
free(file.data);
if (ret < 0) {
fprintf(stderr, "Could not write file content\n");
return ret;
}
return 0;
}