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/*! \file
* \noop Copyright 2006-2016 Christian Stigen Larsen
* \noop Copyright 2020 Christoph Raitzig
*
* \brief The main function and a helper function.
*
* \author Christian Stigen Larsen
* \author Christoph Raitzig
* \copyright Distributed under the GNU General Public License (GPL) v2.
*/
#ifndef INC_JP2A_H
#define INC_JP2A_H
#ifdef _WIN32
#include <windows.h>
#endif
/*!
* \brief The main function.
*
* \param argc argument count
* \param argv the arguments
*/
int main(int argc, char** argv);
/*!
* \brief Reads from a stream into a buffer.
*
* This function is used to make a seekable stream from a non-seekable stream:
* Read the contents of the non-seekable stream into a buffer (with this function) and open a stream to this buffer (with fmemopen()).
* The buffer is (re)allocated as needed.
*
* \param fp stream to read into buffer
* \param buffer the buffer to read into
* \param buffer_size the allocated size of the buffer
* \param actual_size the number of bytes read into the buffer
* \return true if sucessful, false otherwise
*/
int read_into_buffer(FILE *fp, char **buffer, size_t *buffer_size, size_t *actual_size);
#ifdef _WIN32
/*!
* \brief fmemopen alternative for Windows.
*
* Windows does not support opening a file stream to part of the RAM.
* This function creates a temporary file and writes the contents of the buffer to it.
*
* \param buf data to write to the file
* \param size number of bytes to write
* \param mode ignored, for compatibility with the actual fmemopen()
* \return the file handle (or NULL if an error occurred)
*/
HANDLE fmemopen(void *buf, size_t size, const char *mode);
#endif
#endif
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