278 lines
7.9 KiB
C
278 lines
7.9 KiB
C
/*
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* $Id$
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*/
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/*
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* Harbour Project source code:
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* Low level tone code common to some GT drivers
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*
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* Copyright 2006 Przemyslaw Czerpak <druzus / at / priv.onet.pl>
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* www - http://www.harbour-project.org
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*
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* the body of TONE function from W32 taken from GTWIN created by
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* the following authors:
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* Copyright 1999 David G. Holm <dholm@jsd-llc.com>
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* Copyright 1999-2006 Paul Tucker <ptucker@sympatico.ca>
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* Copyright 2005 Andi Jahja <andij@aonlippo.co.id>
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* Copyright 2005 Przemyslaw Czerpak <druzus / at / priv.onet.pl>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
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* Boston, MA 02111-1307 USA (or visit the web site http://www.gnu.org/).
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*
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* As a special exception, the Harbour Project gives permission for
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* additional uses of the text contained in its release of Harbour.
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*
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* The exception is that, if you link the Harbour libraries with other
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* files to produce an executable, this does not by itself cause the
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* resulting executable to be covered by the GNU General Public License.
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* Your use of that executable is in no way restricted on account of
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* linking the Harbour library code into it.
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*
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* This exception does not however invalidate any other reasons why
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* the executable file might be covered by the GNU General Public License.
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*
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* This exception applies only to the code released by the Harbour
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* Project under the name Harbour. If you copy code from other
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* Harbour Project or Free Software Foundation releases into a copy of
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* Harbour, as the General Public License permits, the exception does
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* not apply to the code that you add in this way. To avoid misleading
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* anyone as to the status of such modified files, you must delete
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* this exception notice from them.
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*
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* If you write modifications of your own for Harbour, it is your choice
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* whether to permit this exception to apply to your modifications.
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* If you do not wish that, delete this exception notice.
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*
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*/
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/* NOTE: User programs should never call this layer directly! */
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#define HB_OS_WIN_32_USED
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#include "hbgtcore.h"
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#if defined( HB_OS_WIN_32 )
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#if defined(_MSC_VER)
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#include <conio.h>
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#endif
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#if defined( HB_ARCH_32BIT ) && \
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( defined(__BORLANDC__) || defined(_MSC_VER) || \
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defined(__WATCOMC__) || defined(__MINGW32__) )
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static int hb_Inp9x( USHORT usPort )
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{
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USHORT usVal;
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HB_TRACE(HB_TR_DEBUG, ("hb_Inp9x(%hu)", usPort));
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#if defined( __BORLANDC__ ) || defined(__DMC__)
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_DX = usPort;
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__emit__(0xEC); /* ASM IN AL, DX */
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__emit__(0x32,0xE4); /* ASM XOR AH, AH */
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usVal = _AX;
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#elif defined( __XCC__ )
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__asm {
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mov dx, usPort
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xor ax, ax
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in al, dx
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mov usVal, ax
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}
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#elif defined( __MINGW32__ )
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__asm__ __volatile__ ("inb %w1,%b0":"=a" (usVal):"Nd" (usPort));
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#elif defined( __WATCOMC__ )
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usVal = inp( usPort );
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#else
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usVal = _inp( usPort );
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#endif
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return usVal;
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}
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/* *********************************************************************** */
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static int hb_Outp9x( USHORT usPort, USHORT usVal )
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{
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HB_TRACE(HB_TR_DEBUG, ("hb_Outp9x(%hu, %hu)", usPort, usVal));
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#if defined( __BORLANDC__ ) || defined(__DMC__)
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_DX = usPort;
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_AL = usVal;
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__emit__(0xEE); /* ASM OUT DX, AL */
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#elif defined( __XCC__ )
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__asm {
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mov dx, usPort
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mov ax, usVal
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out dx, al
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}
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#elif defined( __MINGW32__ )
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__asm__ __volatile__ ("outb %b0,%w1": :"a" (usVal), "Nd" (usPort));
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#elif defined( __WATCOMC__ )
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outp( usPort, usVal );
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#else
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_outp( usPort, usVal );
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#endif
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return usVal;
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}
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/* *********************************************************************** */
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/* dDurat is in seconds */
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static void hb_gt_w9xTone( double dFreq, double dDurat )
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{
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INT uLSB,uMSB;
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ULONG lAdjFreq;
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HB_TRACE(HB_TR_DEBUG, ("hb_gt_w9xtone(%lf, %lf)", dFreq, dDurat));
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/* sync with internal clock with very small time period */
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hb_idleSleep( 0.01 );
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/* Clipper ignores Tone() requests (but delays anyway) if Frequency is
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less than < 20 hz (and so should we) to maintain compatibility .. */
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if( dFreq >= 20.0 )
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{
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/* Setup Sound Control Port Registers and timer channel 2 */
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hb_Outp9x(67, 182) ;
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lAdjFreq = (ULONG)( 1193180 / dFreq ) ;
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if( (LONG) lAdjFreq < 0 )
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uLSB = lAdjFreq + 65536;
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else
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uLSB = lAdjFreq % 256;
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if( (LONG) lAdjFreq < 0 )
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uMSB = lAdjFreq + 65536;
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else
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uMSB = lAdjFreq / 256;
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/* set the frequency (LSB,MSB) */
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hb_Outp9x(66, uLSB);
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hb_Outp9x(66, uMSB);
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/* Get current Port setting */
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/* enable Speaker Data & Timer gate bits */
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/* (00000011B is bitmask to enable sound) */
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/* Turn on Speaker - sound Tone for duration.. */
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hb_Outp9x(97, hb_Inp9x( 97 ) | 3);
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hb_idleSleep( dDurat );
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/* Read back current Port value for Reset */
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/* disable Speaker Data & Timer gate bits */
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/* (11111100B is bitmask to disable sound) */
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/* Turn off the Speaker ! */
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hb_Outp9x(97, hb_Inp9x( 97 ) & 0xFC);
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}
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else
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{
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hb_idleSleep( dDurat );
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}
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}
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#endif
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/* *********************************************************************** */
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/* dDurat is in seconds */
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static void hb_gt_wNtTone( double dFreq, double dDurat )
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{
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HB_TRACE(HB_TR_DEBUG, ("hb_gt_wNtTone(%lf, %lf)", dFreq, dDurat));
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/* Clipper ignores Tone() requests (but delays anyway) if Frequency is
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less than < 20 hz. Windows NT minimum is 37... */
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if( dFreq >= 37.0 )
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{
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Beep( (ULONG) dFreq, (ULONG) ( dDurat * 1000 ) ); /* Beep wants Milliseconds */
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}
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else
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{
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hb_idleSleep( dDurat );
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}
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}
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/* *********************************************************************** */
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/* dDuration is in 'Ticks' (18.2 per second) */
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void hb_gt_w32_Tone( double dFrequency, double dDuration )
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{
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static OSVERSIONINFO s_osv;
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static BOOL s_fInit = TRUE;
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HB_TRACE(HB_TR_DEBUG, ("hb_gt_w32_Tone(%lf, %lf)", dFrequency, dDuration));
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if( s_fInit )
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{
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s_osv.dwOSVersionInfoSize = sizeof( OSVERSIONINFO );
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GetVersionEx( &s_osv );
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s_fInit = FALSE;
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}
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/*
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* According to the Clipper NG, the duration in 'ticks' is truncated to the
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* interger portion ... Depending on the platform, Harbour allows a finer
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* resolution, but the minimum is 1 tick (for compatibility)
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*/
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/* Convert from ticks to seconds */
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dDuration = ( HB_MIN( HB_MAX( 1.0, dDuration ), ULONG_MAX ) ) / 18.2;
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/* keep the frequency in an acceptable range */
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dFrequency = HB_MIN( HB_MAX( 0.0, dFrequency ), 32767.0 );
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/* If Windows 95 or 98, use w9xTone for BCC32, MSVC */
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if( s_osv.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS )
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{
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#if defined( HB_ARCH_32BIT ) && \
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( defined( __BORLANDC__ ) || defined( _MSC_VER ) || \
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defined( __WATCOMC__ ) || defined(__MINGW32__) )
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hb_gt_w9xTone( dFrequency, dDuration );
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#else
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hb_gt_wNtTone( dFrequency, dDuration );
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#endif
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}
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/* If Windows NT or NT2k, use wNtTone, which provides TONE()
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reset sequence support (new) */
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else /* if( s_osv.dwPlatformId == VER_PLATFORM_WIN32_NT ) */
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{
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hb_gt_wNtTone( dFrequency, dDuration );
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}
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}
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#endif /* HB_OS_WIN_32 */
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