1 /*---------------------------------------------------------------------------*
2   Project:  DLS converter for SYN
3   File:     dspadpcm.h
4 
5   Copyright (C)2001-2006 Nintendo  All Rights Reserved.
6 
7   These coded instructions, statements, and computer programs contain
8   proprietary information of Nintendo of America Inc. and/or Nintendo
9   Company Ltd., and are protected by Federal copyright law.  They may
10   not be disclosed to third parties or copied or duplicated in any form,
11   in whole or in part, without the prior written consent of Nintendo.
12 
13   $Log: dspadpcm.h,v $
14   Revision 1.2  2006/02/08 06:21:14  aka
15   Changed copyright.
16 
17 
18  *---------------------------------------------------------------------------*/
19 
20 #ifndef __DSPADPCM_H__
21 #define __DSPADPCM_H__
22 
23 //#define MAKE_A_DLL
24 
25 #ifdef MAKE_A_DLL
26 #define LINKDLL __declspec(dllexport)
27 #else
28 #define LINKDLL __declspec(dllimport)
29 #endif
30 
31 /*---------------------------------------------------------------------------*
32     ADPCM info passed to the caller
33  *---------------------------------------------------------------------------*/
34 typedef struct
35 {
36     // start context
37     s16 coef[16];
38     u16 gain;
39     u16 pred_scale;
40     s16 yn1;
41     s16 yn2;
42 
43     // loop context
44     u16 loop_pred_scale;
45     s16 loop_yn1;
46     s16 loop_yn2;
47 
48 } ADPCMINFO;
49 
50 
51 /*---------------------------------------------------------------------------*
52     exported functions
53  *---------------------------------------------------------------------------*/
54 /*
55 LINKDLL u32 getBytesForAdpcmBuffer      (u32 samples);
56 LINKDLL u32 getBytesForAdpcmSamples     (u32 samples);
57 LINKDLL u32 getBytesForPcmBuffer        (u32 samples);
58 LINKDLL u32 getBytesForPcmSamples       (u32 samples);
59 LINKDLL u32 getSampleForAdpcmNibble     (u32 nibble);
60 LINKDLL u32 getBytesForAdpcmInfo        (void);
61 LINKDLL u32 getNibbleAddress            (u32 samples);
62 
63 LINKDLL void encode
64 (
65     s16         *src,   // location of source samples (16bit PCM signed little endian)
66     u8          *dst,   // location of destination buffer
67     ADPCMINFO   *cxt,   // location of adpcm info
68     u32         samples // number of samples to encode
69 );
70 
71 LINKDLL void decode
72 (
73     u8          *src,   // location of encoded source samples
74     s16         *dst,   // location of destination buffer (16 bits / sample)
75     ADPCMINFO   *cxt,   // location of adpcm info
76     u32         samples // number of samples to decode
77 );
78 
79 LINKDLL void getLoopContext
80 (
81     u8          *src,      // location of ADPCM buffer in RAM
82     ADPCMINFO   *cxt,      // location of adpcminfo
83     u32         samples    // samples to desired context
84 );
85 */
86 #endif
87