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tdemultimedia/mpeglib/lib/tplay/tplayfunctions.cpp

85 lines
1.7 KiB

/*
* tplay - buffered audio player
*
* (c) 1997 ilkka karvinen <ik@iki.fi>
*
* Copyright under the GNU GENERAL PUBLIC LICENSE
* (see the file COPYING in this directory)
*
*
* common functions
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include "tplayfunctions.h"
DWORD read_big_endian_long(char * buf)
{
DWORD byte0, byte1, byte2, byte3;
unsigned char* buffer=(unsigned char*) buf;
byte0 = (DWORD) buffer[0];
byte1 = (DWORD) buffer[1];
byte2 = (DWORD) buffer[2];
byte3 = (DWORD) buffer[3];
return (byte0 << 24 | byte1 << 16 | byte2 << 8 | byte3);
}
void write_big_endian_long(char * buf, DWORD value)
{
unsigned char* buffer=(unsigned char*) buf;
buffer[0] = (unsigned char) (value >> 24 & 0xFF);
buffer[1] = (unsigned char) (value >> 16 & 0xFF);
buffer[2] = (unsigned char) (value >> 8 & 0xFF);
buffer[3] = (unsigned char) (value & 0xFF);
}
DWORD read_little_endian_long(char* buf) {
DWORD byte0, byte1, byte2, byte3;
unsigned char* buffer=(unsigned char*) buf;
byte0 = (DWORD) buffer[0];
byte1 = (DWORD) buffer[1];
byte2 = (DWORD) buffer[2];
byte3 = (DWORD) buffer[3];
return (byte3 << 24 | byte2 << 16 | byte1 << 8 | byte0);
}
WORD read_little_endian_word(char * buf)
{
WORD byte0, byte1;
unsigned char* buffer=(unsigned char*) buf;
byte0 = (WORD) buffer[0];
byte1 = (WORD) buffer[1];
return (byte1 << 8 | byte0);
}
void errprintf(char *fmt,...)
{
va_list ap;
va_start(ap, fmt);
vfprintf(stderr, fmt, ap);
}
void die(const char *str)
{
fprintf(stderr, "%s: \n", str);
exit(-1);
}
void errdie(const char *str)
{
fprintf(stderr, "Error: %s\n", str);
exit(-1);
}