119 lines
2.9 KiB
C
119 lines
2.9 KiB
C
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/* @(#)sun.c 1.15 13/04/28 Copyright 1998,1999 Heiko Eissfeldt, Copyright 2006-2013 J. Schilling */
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#include "config.h"
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#ifndef lint
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static UConst char sccsid[] =
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"@(#)sun.c 1.15 13/04/28 Copyright 1998,1999 Heiko Eissfeldt, Copyright 2006-2013 J. Schilling";
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#endif
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/*
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* Copyright (C) by Heiko Eissfeldt
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* Copyright (c) 2006-2013 J. Schilling
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*
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* definitions for sun pcm output
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*/
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/*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* See the file CDDL.Schily.txt in this distribution for details.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file CDDL.Schily.txt from this distribution.
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*/
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#include "config.h"
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#include <schily/stdio.h>
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#include <schily/standard.h>
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#include <schily/unistd.h>
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#include "mytype.h"
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#include "byteorder.h"
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#include "sndfile.h"
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#include "global.h"
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typedef struct SUNHDR {
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unsigned int magic; /* dns. a la .snd */
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unsigned int data_location; /* offset to data */
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unsigned int size; /* # of data bytes */
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unsigned int format; /* format code */
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unsigned int sample_rate; /* in Hertz */
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unsigned int channelcount; /* 1 for mono, 2 for stereo */
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char info[8]; /* comments */
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} SUNHDR;
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LOCAL SUNHDR sunHdr;
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LOCAL int InitSound __PR((int audio, long channels,
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Ulong rate,
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long nBitsPerSample,
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Ulong expected_bytes));
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LOCAL int ExitSound __PR((int audio, Ulong nBytesDone));
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LOCAL Ulong GetHdrSize __PR((void));
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LOCAL Ulong InSizeToOutSize __PR((Ulong BytesToDo));
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LOCAL int
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InitSound(audio, channels, rate, nBitsPerSample, expected_bytes)
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int audio;
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long channels;
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Ulong rate;
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long nBitsPerSample;
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Ulong expected_bytes;
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{
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Ulong hdr_format = nBitsPerSample > 8 ? 0x03 : 0x02;
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sunHdr.magic = cpu_to_le32(UINT4_C(0x646e732e));
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sunHdr.data_location = cpu_to_be32(0x20);
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sunHdr.size = cpu_to_be32(expected_bytes);
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sunHdr.format = cpu_to_be32(hdr_format);
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sunHdr.sample_rate = cpu_to_be32(rate);
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sunHdr.channelcount = cpu_to_be32(channels);
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global.md5offset = sizeof (sunHdr);
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return (write(audio, &sunHdr, sizeof (sunHdr)));
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}
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LOCAL int
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ExitSound(audio, nBytesDone)
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int audio;
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Ulong nBytesDone;
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{
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sunHdr.size = cpu_to_be32(nBytesDone);
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/*
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* goto beginning
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*/
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if (lseek(audio, 0L, SEEK_SET) == -1) {
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return (0);
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}
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return (write(audio, &sunHdr, sizeof (sunHdr)));
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}
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LOCAL Ulong
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GetHdrSize()
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{
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return (sizeof (sunHdr));
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}
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LOCAL Ulong
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InSizeToOutSize(BytesToDo)
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Ulong BytesToDo;
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{
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return (BytesToDo);
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}
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struct soundfile sunsound =
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{
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InitSound, /* init header method */
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ExitSound, /* exit header method */
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GetHdrSize, /* report header size method */
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(int (*) __PR((int audio,
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Uchar *buf,
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size_t BytesToDo))) write, /* get sound samples out */
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InSizeToOutSize, /* compressed? output file size */
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1, /* needs big endian samples */
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"AU"
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};
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