mirror of
https://github.com/webmproject/libwebp.git
synced 2024-11-19 20:08:28 +01:00
78 lines
1.9 KiB
C
78 lines
1.9 KiB
C
// Copyright 2012 Google Inc. All Rights Reserved.
|
|
//
|
|
// This code is licensed under the same terms as WebM:
|
|
// Software License Agreement: http://www.webmproject.org/license/software/
|
|
// Additional IP Rights Grant: http://www.webmproject.org/license/additional/
|
|
// -----------------------------------------------------------------------------
|
|
//
|
|
// Utility functions used by the example programs.
|
|
//
|
|
|
|
#include "./example_util.h"
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
|
|
#if defined(__cplusplus) || defined(c_plusplus)
|
|
extern "C" {
|
|
#endif
|
|
|
|
// -----------------------------------------------------------------------------
|
|
// File I/O
|
|
|
|
int ExUtilReadFile(const char* const file_name,
|
|
const uint8_t** data, size_t* data_size) {
|
|
int ok;
|
|
void* file_data;
|
|
size_t file_size;
|
|
FILE* in;
|
|
|
|
if (file_name == NULL || data == NULL || data_size == NULL) return 0;
|
|
*data = NULL;
|
|
*data_size = 0;
|
|
|
|
in = fopen(file_name, "rb");
|
|
if (in == NULL) {
|
|
fprintf(stderr, "cannot open input file '%s'\n", file_name);
|
|
return 0;
|
|
}
|
|
fseek(in, 0, SEEK_END);
|
|
file_size = ftell(in);
|
|
fseek(in, 0, SEEK_SET);
|
|
file_data = malloc(file_size);
|
|
if (file_data == NULL) return 0;
|
|
ok = (fread(file_data, file_size, 1, in) == 1);
|
|
fclose(in);
|
|
|
|
if (!ok) {
|
|
fprintf(stderr, "Could not read %zu bytes of data from file %s\n",
|
|
file_size, file_name);
|
|
free(file_data);
|
|
return 0;
|
|
}
|
|
*data = (uint8_t*)file_data;
|
|
*data_size = file_size;
|
|
return 1;
|
|
}
|
|
|
|
int ExUtilWriteFile(const char* const file_name,
|
|
const uint8_t* data, size_t data_size) {
|
|
int ok;
|
|
FILE* out;
|
|
|
|
if (file_name == NULL || data == NULL) {
|
|
return 0;
|
|
}
|
|
out = fopen(file_name, "wb");
|
|
if (out == NULL) {
|
|
fprintf(stderr, "Error! Cannot open output file '%s'\n", file_name);
|
|
return 0;
|
|
}
|
|
ok = (fwrite(data, data_size, 1, out) == 1);
|
|
fclose(out);
|
|
return ok;
|
|
}
|
|
|
|
#if defined(__cplusplus) || defined(c_plusplus)
|
|
} // extern "C"
|
|
#endif
|