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Annotation of src/usr.bin/aucat/file.h, Revision 1.1

1.1     ! ratchov     1: /*     $OpenBSD$       */
        !             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 FILE_H
        !            18: #define FILE_H
        !            19:
        !            20: #include <sys/queue.h>
        !            21: #include <sys/types.h>
        !            22:
        !            23: #include <poll.h>
        !            24:
        !            25: struct aparams;
        !            26: struct aproc;
        !            27: struct abuf;
        !            28:
        !            29: struct file {
        !            30:        int fd;                         /* file descriptor */
        !            31:        struct pollfd *pfd;             /* arg to poll(2) syscall */
        !            32:        off_t rbytes;                   /* bytes to read, -1 if no limit */
        !            33:        off_t wbytes;                   /* bytes to write, -1 if no limit */
        !            34:        int events;                     /* events for poll(2) */
        !            35: #define FILE_ROK       0x1             /* file readable */
        !            36: #define FILE_WOK       0x2             /* file writable */
        !            37: #define FILE_EOF       0x4             /* eof on the read end */
        !            38: #define FILE_HUP       0x8             /* eof on the write end */
        !            39: #define FILE_RFLOW     0x10            /* has flow control on read() */
        !            40: #define FILE_WFLOW     0x20            /* has flow control on write() */
        !            41:        int state;                      /* one of above */
        !            42:        char *name;                     /* for debug purposes */
        !            43:        struct aproc *rproc, *wproc;    /* reader and/or writer */
        !            44:        LIST_ENTRY(file) entry;
        !            45: };
        !            46:
        !            47: LIST_HEAD(filelist,file);
        !            48:
        !            49: extern struct filelist file_list;
        !            50:
        !            51: void file_start(void);
        !            52: void file_stop(void);
        !            53: struct file *file_new(int, char *);
        !            54: void file_del(struct file *);
        !            55: void file_attach(struct file *, struct aproc *, struct aproc *);
        !            56: unsigned file_read(struct file *, unsigned char *, unsigned);
        !            57: unsigned file_write(struct file *, unsigned char *, unsigned);
        !            58: int file_poll(void);
        !            59: void file_eof(struct file *);
        !            60: void file_hup(struct file *);
        !            61:
        !            62: /*
        !            63:  * max data of a .wav file. The total file size must be smaller than
        !            64:  * 2^31, and we also have to leave some space for the headers (around 40
        !            65:  * bytes)
        !            66:  */
        !            67: #define WAV_DATAMAX    (0x7fff0000)
        !            68:
        !            69: int wav_readhdr(int, struct aparams *, off_t *);
        !            70: int wav_writehdr(int, struct aparams *);
        !            71:
        !            72: /* legacy */
        !            73: int legacy_play(char *, char *);
        !            74:
        !            75: #endif /* !defined(FILE_H) */