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- /* $Id: dsp.h,v 4.9 1999/04/22 19:42:04 lcs Exp $ */
-
- /*
- AHI - Hardware independent audio subsystem
- Copyright (C) 1996-1999 Martin Blom <martin@blom.org>
-
- This library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public
- License as published by the Free Software Foundation; either
- version 2 of the License, or (at your option) any later version.
-
- This library 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
- Library General Public License for more details.
-
- You should have received a copy of the GNU Library General Public
- License along with this library; if not, write to the
- Free Software Foundation, Inc., 59 Temple Place - Suite 330, Cambridge,
- MA 02139, USA.
- */
-
- #ifndef _DSP_H_
- #define _DSP_H_
-
- #include <exec/types.h>
- #include "ahi_def.h"
-
-
- #ifdef VERSION68K
-
- typedef void ASMCALL (*ECHOFUNC)( REG(a0, struct Echo *),
- REG(a1, void *),
- REG(a2, struct AHIPrivAudioCtrl *) );
-
- #else
-
- typedef void (*ECHOFUNC)( struct Echo *,
- void *,
- struct AHIPrivAudioCtrl * );
-
- #endif
-
- struct Echo
- {
- ULONG ahiecho_Delay;
- ECHOFUNC ahiecho_Code; // The echo routine
- Fixed ahiecho_FeedbackDS; // Delayed signal to same channel
- Fixed ahiecho_FeedbackDO; // Delayed signal to other channel
- Fixed ahiecho_FeedbackNS; // Normal signal to same channel
- Fixed ahiecho_FeedbackNO; // Normal signal to other channel
- Fixed ahiecho_MixN; // Normal signal
- Fixed ahiecho_MixD; // Delayed signal
- ULONG ahiecho_Offset; // (&Buffer-&SrcPtr)/sizeof(ahiecho_Buffer[0])
- APTR ahiecho_SrcPtr; // Pointer to &Buffer
- APTR ahiecho_DstPtr; // Pointer to &(Buffer[Delay])
- APTR ahiecho_EndPtr; // Pointer to address after buffer
- ULONG ahiecho_BufferLength; // Delay buffer length in samples
- ULONG ahiecho_BufferSize; // Delay buffer size in bytes
- BYTE ahiecho_Buffer[0]; // Delay buffer
- };
-
-
- #endif /* _DSP_H_ */
-