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Annotation of src/usr.bin/aucat/wav.h, Revision 1.11

1.11    ! ratchov     1: /*     $OpenBSD: wav.h,v 1.10 2010/06/04 06:15:28 ratchov Exp $        */
1.1       ratchov     2: /*
                      3:  * Copyright (c) 2008 Alexandre Ratchov <alex@caoua.org>
                      4:  *
                      5:  * Permission to use, copy, modify, and distribute this software for any
                      6:  * purpose with or without fee is hereby granted, provided that the above
                      7:  * copyright notice and this permission notice appear in all copies.
                      8:  *
                      9:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
                     10:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
                     11:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
                     12:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
                     13:  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
                     14:  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
                     15:  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
                     16:  */
                     17: #ifndef WAV_H
                     18: #define WAV_H
                     19:
                     20: #include <sys/types.h>
                     21:
1.4       ratchov    22: #include "aparams.h"
1.1       ratchov    23: #include "pipe.h"
                     24:
                     25: struct wav {
                     26:        struct pipe pipe;
                     27: #define HDR_AUTO       0       /* guess by looking at the file name */
                     28: #define HDR_RAW                1       /* no headers, ie openbsd native ;-) */
                     29: #define HDR_WAV                2       /* microsoft riff wave */
                     30:        unsigned hdr;           /* HDR_RAW or HDR_WAV */
1.8       ratchov    31:        unsigned xrun;          /* xrun policy */
1.1       ratchov    32:        struct aparams hpar;    /* parameters to write on the header */
                     33:        off_t rbytes;           /* bytes to read, -1 if no limit */
                     34:        off_t wbytes;           /* bytes to write, -1 if no limit */
1.8       ratchov    35:        off_t startpos;         /* beginning of the data chunk */
                     36:        off_t endpos;           /* end of the data chunk */
                     37:        off_t mmcpos;           /* play/rec start point set by MMC */
1.3       ratchov    38:        short *map;             /* mulaw/alaw -> s16 conversion table */
1.8       ratchov    39:        int slot;               /* mixer ctl slot number */
1.10      ratchov    40:        int mmc;                /* use MMC control */
1.9       ratchov    41:        int join;               /* join/expand channels */
1.8       ratchov    42:        unsigned vol;           /* current volume */
                     43:        unsigned maxweight;     /* dynamic range when vol == 127 */
                     44: #define WAV_INIT       0       /* not trying to do anything */
                     45: #define WAV_START      1       /* buffer allocated */
                     46: #define WAV_READY      2       /* buffer filled enough */
                     47: #define WAV_RUN                3       /* buffer attached to device */
                     48: #define WAV_FAILED     4       /* failed to seek */
                     49:        unsigned pstate;        /* one of above */
                     50:        unsigned mode;          /* bitmap of MODE_* */
1.10      ratchov    51:        struct dev *dev;        /* device playing or recording */
1.1       ratchov    52: };
                     53:
                     54: extern struct fileops wav_ops;
                     55:
1.10      ratchov    56: struct wav *wav_new_in(struct fileops *, struct dev *,
                     57:     unsigned, char *, unsigned, struct aparams *, unsigned, unsigned, int, int);
                     58: struct wav *wav_new_out(struct fileops *, struct dev *,
                     59:     unsigned, char *, unsigned, struct aparams *, unsigned, int, int);
1.1       ratchov    60: unsigned wav_read(struct file *, unsigned char *, unsigned);
                     61: unsigned wav_write(struct file *, unsigned char *, unsigned);
                     62: void wav_close(struct file *);
1.8       ratchov    63: int wav_readhdr(int, struct aparams *, off_t *, off_t *, short **);
                     64: int wav_writehdr(int, struct aparams *, off_t *, off_t);
1.3       ratchov    65: void wav_conv(unsigned char *, unsigned, short *);
                     66:
                     67: extern short wav_ulawmap[256];
                     68: extern short wav_alawmap[256];
1.1       ratchov    69:
                     70: #endif /* !defined(WAV_H) */