526b5580da
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@21070 a1c6a512-1295-4272-9138-f99709370657
56 lines
1.9 KiB
C
56 lines
1.9 KiB
C
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#ifndef SFORMAT_H__
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#define SFORMAT_H__
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typedef unsigned short uint16;
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typedef unsigned long uint32;
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#define FORMAT_WAVE 0
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#define FORMAT_AIFF 1
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#define FORMAT_NEXT 2
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/* the NeXTStep sound header structure; can be big or little endian */
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typedef struct _nextstep
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{
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char ns_fileid[4]; /* magic number '.snd' if file is big-endian */
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uint32 ns_onset; /* byte offset of first sample */
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uint32 ns_length; /* length of sound in bytes */
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uint32 ns_format; /* format; see below */
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uint32 ns_sr; /* sample rate */
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uint32 ns_nchans; /* number of channels */
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char ns_info[4]; /* comment */
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} t_nextstep;
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#define NS_FORMAT_LINEAR_16 3
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#define NS_FORMAT_LINEAR_24 4
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#define NS_FORMAT_FLOAT 6
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#define SCALE (1./(1024. * 1024. * 1024. * 2.))
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/* the WAVE header. All Wave files are little endian. We assume
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the "fmt" chunk comes first which is usually the case but perhaps not
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always; same for AIFF and the "COMM" chunk. */
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typedef unsigned word;
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typedef unsigned long dword;
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typedef struct _wave
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{
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char w_fileid[4]; /* chunk id 'RIFF' */
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uint32 w_chunksize; /* chunk size */
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char w_waveid[4]; /* wave chunk id 'WAVE' */
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char w_fmtid[4]; /* format chunk id 'fmt ' */
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uint32 w_fmtchunksize; /* format chunk size */
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uint16 w_fmttag; /* format tag, 1 for PCM */
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uint16 w_nchannels; /* number of channels */
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uint32 w_samplespersec; /* sample rate in hz */
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uint32 w_navgbytespersec; /* average bytes per second */
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uint16 w_nblockalign; /* number of bytes per sample */
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uint16 w_nbitspersample; /* number of bits in a sample */
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char w_datachunkid[4]; /* data chunk id 'data' */
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uint32 w_datachunksize; /* length of data chunk */
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} t_wave;
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#endif
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