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