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/*
Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009 Her Majesty
the Queen in Right of Canada (Communications Research Center Canada)
*/
/*
This file is part of CRC-DabMux.
CRC-DabMux is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
CRC-DabMux is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with CRC-DabMux. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _MPEG
#define _MPEG
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#ifdef _WIN32
# include <stddef.h>
# include <basetsd.h>
# include <io.h>
# define ssize_t SSIZE_T
#else
# include <unistd.h>
#endif
#ifdef __cplusplus
extern "C" {
#endif
typedef struct {
unsigned long sync1:8;
unsigned long protection:1;
unsigned long layer:2;
unsigned long id:2;
unsigned long sync2:3;
unsigned long priv:1;
unsigned long padding:1;
unsigned long samplingrate:2;
unsigned long bitrate:4;
unsigned long emphasis:2;
unsigned long original:1;
unsigned long copyright:1;
unsigned long mode:2;
unsigned long channel:2;
} mpegHeader;
extern short getMpegBitrate(void* data);
extern int getMpegFrequency(void* data);
int getMpegFrameLength(mpegHeader* header);
ssize_t readData(int file, void* data, size_t size, unsigned int tries);
#define MPEG_BUFFER_OVERFLOW -2
#define MPEG_FILE_EMPTY -3
#define MPEG_FILE_ERROR -4
#define MPEG_SYNC_NOT_FOUND -5
#define MPEG_INVALID_FRAME -6
#define MPEG_BUFFER_UNDERFLOW -7
int readMpegHeader(int file, void* data, int size);
int readMpegFrame(int file, void* data, int size);
#ifdef __cplusplus
}
#endif
#endif // _MPEG
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