// -------------------------------------------------------------------------
//
//    Copyright (C) 2009-2014 Fons Adriaensen <fons@linuxaudio.org>
//    
//    This program is free software; you can redistribute it and/or modify
//    it under the terms of the GNU General Public License as published by
//    the Free Software Foundation; either version 2 of the License, or
//    (at your option) any later version.
//
//    This program is distributed in the hope that it will be useful,
//    but WITHOUT ANY WARRANTY; without even the implied warranty of
//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//    GNU General Public License for more details.
//
//    You should have received a copy of the GNU General Public License
//    along with this program; if not, write to the Free Software
//    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
//
// -------------------------------------------------------------------------


#ifndef __AUDIOFILE_H
#define __AUDIOFILE_H


#include <stdio.h>
#include <stdint.h>
#include <sndfile.h>
#include "dither.h"


class Audiofile
{
public:

    enum
    {
        MODE_NONE,
	MODE_READ,
	MODE_WRITE
    };

    enum
    {
	TYPE_OTHER,
	TYPE_CAF,
        TYPE_WAV,
        TYPE_AMB,
	TYPE_AIFF,
	TYPE_FLAC
    };

    enum
    {
	FORM_OTHER,
        FORM_16BIT,
	FORM_24BIT,
	FORM_32BIT,
        FORM_FLOAT,
    };

    enum
    {
	DITHER_NONE,
        DITHER_RECT,
	DITHER_TRIA,
	DITHER_LIPS,
    };

    enum
    {
        ERR_NONE    = 0,
	ERR_MODE    = -1,
	ERR_TYPE    = -2,
	ERR_FORM    = -3,
	ERR_OPEN    = -4,
	ERR_SEEK    = -5,
	ERR_DATA    = -6,
	ERR_READ    = -7,
	ERR_WRITE   = -8
    };

    enum { BUFFSIZE = 1024 };

    Audiofile (void);
    ~Audiofile (void);

    int mode (void) const { return _mode; }
    int type (void) const { return _type; }
    int form (void) const { return _form; }
    int rate (void) const { return _rate; }
    int chan (void) const { return _chan; }
    uint64_t size (void) const { return _size; }

    const char *typestr (void) const { return _typestr [_type]; }
    const char *formstr (void) const { return _formstr [_form]; }
    const char *dithstr (void) const { return _dithstr [_dith_type]; }

    int enc_type (const char *s);
    int enc_form (const char *s);
    int enc_dith (const char *s);

    int open_read (const char *name);
    int open_write (const char *name, int type, int form, int rate, int chan);
    int close (void);
    int set_dither (int type);
    float *get_buffer (void);

    int64_t seek (int64_t posit, int mode = SEEK_SET);
    int read  (float *data, uint64_t frames);
    int write (float *data, uint64_t frames);


private:

    void clear (void);

    SNDFILE  *_sndfile;
    int       _mode;
    int       _type;
    int       _form;
    int       _rate;
    int       _chan;
    uint64_t  _size;
    int       _dith_type;
    Dither   *_dith_proc;
    int16_t  *_dith_buff;
    float    *_data_buff;

    static const char *_typestr [];
    static const char *_formstr [];
    static const char *_dithstr [];
};


#endif