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/*
* This file has been modified for the cdrkit suite.
*
* The behaviour and appearence of the program code below can differ to a major
* extent from the version distributed by the original author(s).
*
* For details, see Changelog file distributed with the cdrkit package. If you
* received this file from another source then ask the distributing person for
* a log of modifications.
*
*/
/* @(#)sun.c 1.4 01/10/27 Copyright 1998,1999 Heiko Eissfeldt */
/***
* CopyPolicy: GNU Public License 2 applies
* Copyright (C) by Heiko Eissfeldt
*
*
* ---------------------------------------------------------------------
* definitions for sun pcm output
* ---------------------------------------------------------------------
*/
#include "config.h"
#include "mytype.h"
#include <stdio.h>
#include <unixstd.h>
#include "byteorder.h"
#include "sndfile.h"
typedef struct SUNHDR {
unsigned int magic; /* dns. a la .snd */
unsigned int data_location; /* offset to data */
unsigned int size; /* # of data bytes */
unsigned int format; /* format code */
unsigned int sample_rate; /* in Hertz */
unsigned int channelcount; /* 1 for mono, 2 for stereo */
char info[8]; /* comments */
} SUNHDR;
static SUNHDR sunHdr;
static int InitSound(int audio, long channels, unsigned long rate,
long nBitsPerSample, unsigned long expected_bytes);
static int InitSound(int audio, long channels, unsigned long rate,
long nBitsPerSample, unsigned long expected_bytes)
{
unsigned long format = nBitsPerSample > 8 ? 0x03 : 0x02;
sunHdr.magic = cpu_to_le32(UINT4_C(0x646e732e));
sunHdr.data_location = cpu_to_be32(0x20);
sunHdr.size = cpu_to_be32(expected_bytes);
sunHdr.format = cpu_to_be32(format);
sunHdr.sample_rate = cpu_to_be32(rate);
sunHdr.channelcount = cpu_to_be32(channels);
return write (audio, &sunHdr, sizeof (sunHdr));
}
static int ExitSound(int audio, unsigned long nBytesDone);
static int ExitSound(int audio, unsigned long nBytesDone)
{
sunHdr.size = cpu_to_be32(nBytesDone);
/* goto beginning */
if (lseek(audio, 0L, SEEK_SET) == -1) {
return 0;
}
return write (audio, &sunHdr, sizeof (sunHdr));
}
static unsigned long GetHdrSize(void);
static unsigned long GetHdrSize()
{
return sizeof( sunHdr );
}
static unsigned long InSizeToOutSize(unsigned long BytesToDo);
static unsigned long InSizeToOutSize(unsigned long BytesToDo)
{
return BytesToDo;
}
struct soundfile sunsound =
{
InitSound, /* init header method */
ExitSound, /* exit header method */
GetHdrSize, /* report header size method */
/* get sound samples out */
(int (*)(int audio, unsigned char *buf, unsigned long BytesToDo)) write,
InSizeToOutSize, /* compressed? output file size */
1 /* needs big endian samples */
};
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