1036 lines
22 KiB
C
Executable File
1036 lines
22 KiB
C
Executable File
/*
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Copyright (C) 1994-1995 Apogee Software, Ltd.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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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.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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/**********************************************************************
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module: MUSIC.C
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author: James R. Dose
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date: March 25, 1994
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Device independant music playback routines.
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(c) Copyright 1994 James R. Dose. All Rights Reserved.
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**********************************************************************/
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#include <stdio.h>
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#include <stdlib.h>
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#include "task_man.h"
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#include "sndcards.h"
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#include "music.h"
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#include "midi.h"
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#include "al_midi.h"
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#include "pas16.h"
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#include "blaster.h"
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#include "gusmidi.h"
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#include "mpu401.h"
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#include "awe32.h"
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#include "sndscape.h"
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#include "ll_man.h"
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#include "user.h"
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#define TRUE ( 1 == 1 )
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#define FALSE ( !TRUE )
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void TextMode( void );
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#pragma aux TextMode = \
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"mov ax, 0003h", \
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"int 10h" \
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modify [ ax ];
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int MUSIC_SoundDevice = -1;
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int MUSIC_ErrorCode = MUSIC_Ok;
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static midifuncs MUSIC_MidiFunctions;
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static int MUSIC_FadeLength;
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static int MUSIC_FadeRate;
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static unsigned MUSIC_CurrentFadeVolume;
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static unsigned MUSIC_LastFadeVolume;
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static int MUSIC_EndingFadeVolume;
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static task *MUSIC_FadeTask = NULL;
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int MUSIC_InitAWE32( midifuncs *Funcs );
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int MUSIC_InitFM( int card, midifuncs *Funcs );
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int MUSIC_InitMidi( int card, midifuncs *Funcs, int Address );
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int MUSIC_InitGUS( midifuncs *Funcs );
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#define MUSIC_SetErrorCode( status ) \
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MUSIC_ErrorCode = ( status );
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/*---------------------------------------------------------------------
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Function: MUSIC_ErrorString
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Returns a pointer to the error message associated with an error
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number. A -1 returns a pointer the current error.
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---------------------------------------------------------------------*/
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char *MUSIC_ErrorString
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(
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int ErrorNumber
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)
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{
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char *ErrorString;
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switch( ErrorNumber )
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{
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case MUSIC_Warning :
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case MUSIC_Error :
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ErrorString = MUSIC_ErrorString( MUSIC_ErrorCode );
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break;
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case MUSIC_Ok :
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ErrorString = "Music ok.";
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break;
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case MUSIC_ASSVersion :
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ErrorString = "Apogee Sound System Version " ASS_VERSION_STRING " "
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"Programmed by Jim Dose\n"
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"(c) Copyright 1996 James R. Dose. All Rights Reserved.\n";
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break;
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case MUSIC_SoundCardError :
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switch( MUSIC_SoundDevice )
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{
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case SoundBlaster :
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case WaveBlaster :
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ErrorString = BLASTER_ErrorString( BLASTER_Error );
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break;
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case ProAudioSpectrum :
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case SoundMan16 :
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ErrorString = PAS_ErrorString( PAS_Error );
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break;
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case Adlib :
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ErrorString = "Adlib error.";
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break;
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case GenMidi :
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case SoundCanvas :
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ErrorString = "Could not detect MPU-401.";
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break;
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case SoundScape :
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ErrorString = SOUNDSCAPE_ErrorString( SOUNDSCAPE_Error );
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break;
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case Awe32 :
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ErrorString = AWE32_ErrorString( AWE32_Error );
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break;
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case UltraSound :
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ErrorString = GUS_ErrorString( GUS_Error );
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break;
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default :
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ErrorString = MUSIC_ErrorString( MUSIC_InvalidCard );
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break;
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}
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break;
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case MUSIC_MPU401Error :
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ErrorString = "Could not detect MPU-401.";
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break;
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case MUSIC_InvalidCard :
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ErrorString = "Invalid Music device.";
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break;
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case MUSIC_MidiError :
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ErrorString = "Error playing MIDI file.";
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break;
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case MUSIC_TaskManError :
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ErrorString = "TaskMan error.";
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break;
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case MUSIC_FMNotDetected :
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ErrorString = "Could not detect FM chip.";
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break;
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case MUSIC_DPMI_Error :
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ErrorString = "DPMI Error in MUSIC.";
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break;
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default :
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ErrorString = "Unknown Music error code.";
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break;
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}
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return( ErrorString );
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}
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/*---------------------------------------------------------------------
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Function: MUSIC_Init
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Selects which sound device to use.
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---------------------------------------------------------------------*/
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int MUSIC_Init
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(
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int SoundCard,
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int Address
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)
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{
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int i;
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int status;
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if ( USER_CheckParameter( "ASSVER" ) )
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{
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MUSIC_SetErrorCode( MUSIC_ASSVersion );
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return( MUSIC_Error );
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}
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status = LL_LockMemory();
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if ( status != LL_Ok )
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{
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MUSIC_SetErrorCode( MUSIC_DPMI_Error );
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return( MUSIC_Error );
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}
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for( i = 0; i < 128; i++ )
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{
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MIDI_PatchMap[ i ] = i;
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}
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status = MUSIC_Ok;
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MUSIC_SoundDevice = SoundCard;
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switch( SoundCard )
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{
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case SoundBlaster :
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case Adlib :
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case ProAudioSpectrum :
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case SoundMan16 :
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status = MUSIC_InitFM( SoundCard, &MUSIC_MidiFunctions );
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break;
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case GenMidi :
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case SoundCanvas :
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case WaveBlaster :
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case SoundScape :
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status = MUSIC_InitMidi( SoundCard, &MUSIC_MidiFunctions, Address );
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break;
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case Awe32 :
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status = MUSIC_InitAWE32( &MUSIC_MidiFunctions );
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break;
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case UltraSound :
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status = MUSIC_InitGUS( &MUSIC_MidiFunctions );
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break;
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case SoundSource :
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case PC :
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default :
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MUSIC_SetErrorCode( MUSIC_InvalidCard );
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status = MUSIC_Error;
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}
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if ( status != MUSIC_Ok )
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{
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LL_UnlockMemory();
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}
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return( status );
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}
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/*---------------------------------------------------------------------
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Function: MUSIC_Shutdown
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Terminates use of sound device.
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---------------------------------------------------------------------*/
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int MUSIC_Shutdown
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(
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void
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)
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{
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int status;
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status = MUSIC_Ok;
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MIDI_StopSong();
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if ( MUSIC_FadeTask != NULL )
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{
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MUSIC_StopFade();
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}
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switch ( MUSIC_SoundDevice )
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{
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case Adlib :
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AL_Shutdown();
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break;
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case SoundBlaster :
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AL_Shutdown();
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BLASTER_RestoreMidiVolume();
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break;
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case GenMidi :
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case SoundCanvas :
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case SoundScape :
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MPU_Reset();
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break;
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case WaveBlaster :
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BLASTER_ShutdownWaveBlaster();
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MPU_Reset();
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BLASTER_RestoreMidiVolume();
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break;
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case Awe32 :
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AWE32_Shutdown();
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BLASTER_RestoreMidiVolume();
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break;
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case ProAudioSpectrum :
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case SoundMan16 :
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AL_Shutdown();
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PAS_RestoreMusicVolume();
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break;
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case UltraSound :
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GUSMIDI_Shutdown();
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break;
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}
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LL_UnlockMemory();
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return( status );
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}
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/*---------------------------------------------------------------------
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Function: MUSIC_SetMaxFMMidiChannel
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Sets the maximum MIDI channel that FM cards respond to.
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---------------------------------------------------------------------*/
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void MUSIC_SetMaxFMMidiChannel
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(
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int channel
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)
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{
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AL_SetMaxMidiChannel( channel );
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}
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/*---------------------------------------------------------------------
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Function: MUSIC_SetVolume
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Sets the volume of music playback.
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---------------------------------------------------------------------*/
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void MUSIC_SetVolume
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(
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int volume
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)
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{
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volume = max( 0, volume );
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volume = min( volume, 255 );
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if ( MUSIC_SoundDevice != -1 )
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{
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MIDI_SetVolume( volume );
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}
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}
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/*---------------------------------------------------------------------
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Function: MUSIC_SetMidiChannelVolume
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Sets the volume of music playback on the specified MIDI channel.
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---------------------------------------------------------------------*/
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void MUSIC_SetMidiChannelVolume
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(
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int channel,
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int volume
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)
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{
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MIDI_SetUserChannelVolume( channel, volume );
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}
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/*---------------------------------------------------------------------
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Function: MUSIC_ResetMidiChannelVolumes
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Sets the volume of music playback on all MIDI channels to full volume.
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---------------------------------------------------------------------*/
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void MUSIC_ResetMidiChannelVolumes
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(
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void
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)
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{
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MIDI_ResetUserChannelVolume();
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}
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/*---------------------------------------------------------------------
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Function: MUSIC_GetVolume
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Returns the volume of music playback.
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---------------------------------------------------------------------*/
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int MUSIC_GetVolume
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(
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void
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)
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{
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if ( MUSIC_SoundDevice == -1 )
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{
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return( 0 );
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}
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return( MIDI_GetVolume() );
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}
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/*---------------------------------------------------------------------
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Function: MUSIC_SetLoopFlag
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Set whether the music will loop or end when it reaches the end of
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the song.
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---------------------------------------------------------------------*/
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void MUSIC_SetLoopFlag
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(
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int loopflag
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)
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{
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MIDI_SetLoopFlag( loopflag );
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}
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/*---------------------------------------------------------------------
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Function: MUSIC_SongPlaying
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Returns whether there is a song playing.
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---------------------------------------------------------------------*/
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int MUSIC_SongPlaying
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(
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void
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)
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{
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return( MIDI_SongPlaying() );
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}
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/*---------------------------------------------------------------------
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Function: MUSIC_Continue
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Continues playback of a paused song.
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---------------------------------------------------------------------*/
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void MUSIC_Continue
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(
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void
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)
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{
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MIDI_ContinueSong();
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}
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/*---------------------------------------------------------------------
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Function: MUSIC_Pause
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Pauses playback of a song.
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---------------------------------------------------------------------*/
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void MUSIC_Pause
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(
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void
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)
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{
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MIDI_PauseSong();
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}
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/*---------------------------------------------------------------------
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Function: MUSIC_StopSong
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Stops playback of current song.
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---------------------------------------------------------------------*/
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int MUSIC_StopSong
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(
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void
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)
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{
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MUSIC_StopFade();
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MIDI_StopSong();
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MUSIC_SetErrorCode( MUSIC_Ok );
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return( MUSIC_Ok );
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}
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/*---------------------------------------------------------------------
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Function: MUSIC_PlaySong
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Begins playback of MIDI song.
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---------------------------------------------------------------------*/
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int MUSIC_PlaySong
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(
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unsigned char *song,
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int loopflag
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)
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{
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int status;
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switch( MUSIC_SoundDevice )
|
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{
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case SoundBlaster :
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case Adlib :
|
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case ProAudioSpectrum :
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case SoundMan16 :
|
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case GenMidi :
|
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case SoundCanvas :
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case WaveBlaster :
|
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case SoundScape :
|
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case Awe32 :
|
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case UltraSound :
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MIDI_StopSong();
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status = MIDI_PlaySong( song, loopflag );
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if ( status != MIDI_Ok )
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{
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MUSIC_SetErrorCode( MUSIC_MidiError );
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return( MUSIC_Warning );
|
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}
|
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break;
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case SoundSource :
|
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case PC :
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default :
|
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MUSIC_SetErrorCode( MUSIC_InvalidCard );
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return( MUSIC_Warning );
|
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break;
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}
|
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return( MUSIC_Ok );
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}
|
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|
|
|
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/*---------------------------------------------------------------------
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Function: MUSIC_SetContext
|
|
|
|
Sets the song context.
|
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---------------------------------------------------------------------*/
|
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void MUSIC_SetContext
|
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(
|
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int context
|
|
)
|
|
|
|
{
|
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MIDI_SetContext( context );
|
|
}
|
|
|
|
|
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/*---------------------------------------------------------------------
|
|
Function: MUSIC_GetContext
|
|
|
|
Returns the current song context.
|
|
---------------------------------------------------------------------*/
|
|
|
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int MUSIC_GetContext
|
|
(
|
|
void
|
|
)
|
|
|
|
{
|
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return MIDI_GetContext();
|
|
}
|
|
|
|
|
|
/*---------------------------------------------------------------------
|
|
Function: MUSIC_SetSongTick
|
|
|
|
Sets the position of the song pointer.
|
|
---------------------------------------------------------------------*/
|
|
|
|
void MUSIC_SetSongTick
|
|
(
|
|
unsigned long PositionInTicks
|
|
)
|
|
|
|
{
|
|
MIDI_SetSongTick( PositionInTicks );
|
|
}
|
|
|
|
|
|
/*---------------------------------------------------------------------
|
|
Function: MUSIC_SetSongTime
|
|
|
|
Sets the position of the song pointer.
|
|
---------------------------------------------------------------------*/
|
|
|
|
void MUSIC_SetSongTime
|
|
(
|
|
unsigned long milliseconds
|
|
)
|
|
|
|
{
|
|
MIDI_SetSongTime( milliseconds );
|
|
}
|
|
|
|
|
|
/*---------------------------------------------------------------------
|
|
Function: MUSIC_SetSongPosition
|
|
|
|
Sets the position of the song pointer.
|
|
---------------------------------------------------------------------*/
|
|
|
|
void MUSIC_SetSongPosition
|
|
(
|
|
int measure,
|
|
int beat,
|
|
int tick
|
|
)
|
|
|
|
{
|
|
MIDI_SetSongPosition( measure, beat, tick );
|
|
}
|
|
|
|
|
|
/*---------------------------------------------------------------------
|
|
Function: MUSIC_GetSongPosition
|
|
|
|
Returns the position of the song pointer.
|
|
---------------------------------------------------------------------*/
|
|
|
|
void MUSIC_GetSongPosition
|
|
(
|
|
songposition *pos
|
|
)
|
|
|
|
{
|
|
MIDI_GetSongPosition( pos );
|
|
}
|
|
|
|
|
|
/*---------------------------------------------------------------------
|
|
Function: MUSIC_GetSongLength
|
|
|
|
Returns the length of the song.
|
|
---------------------------------------------------------------------*/
|
|
|
|
void MUSIC_GetSongLength
|
|
(
|
|
songposition *pos
|
|
)
|
|
|
|
{
|
|
MIDI_GetSongLength( pos );
|
|
}
|
|
|
|
|
|
int MUSIC_InitAWE32
|
|
(
|
|
midifuncs *Funcs
|
|
)
|
|
|
|
{
|
|
int status;
|
|
|
|
status = AWE32_Init();
|
|
if ( status != AWE32_Ok )
|
|
{
|
|
MUSIC_SetErrorCode( MUSIC_SoundCardError );
|
|
return( MUSIC_Error );
|
|
}
|
|
|
|
Funcs->NoteOff = AWE32_NoteOff;
|
|
Funcs->NoteOn = AWE32_NoteOn;
|
|
Funcs->PolyAftertouch = AWE32_PolyAftertouch;
|
|
Funcs->ControlChange = AWE32_ControlChange;
|
|
Funcs->ProgramChange = AWE32_ProgramChange;
|
|
Funcs->ChannelAftertouch = AWE32_ChannelAftertouch;
|
|
Funcs->PitchBend = AWE32_PitchBend;
|
|
Funcs->ReleasePatches = NULL;
|
|
Funcs->LoadPatch = NULL;
|
|
Funcs->SetVolume = NULL;
|
|
Funcs->GetVolume = NULL;
|
|
|
|
if ( BLASTER_CardHasMixer() )
|
|
{
|
|
BLASTER_SaveMidiVolume();
|
|
Funcs->SetVolume = BLASTER_SetMidiVolume;
|
|
Funcs->GetVolume = BLASTER_GetMidiVolume;
|
|
}
|
|
|
|
status = MUSIC_Ok;
|
|
MIDI_SetMidiFuncs( Funcs );
|
|
|
|
return( status );
|
|
}
|
|
|
|
|
|
int MUSIC_InitFM
|
|
(
|
|
int card,
|
|
midifuncs *Funcs
|
|
)
|
|
|
|
{
|
|
int status;
|
|
int passtatus;
|
|
|
|
status = MIDI_Ok;
|
|
|
|
if ( !AL_DetectFM() )
|
|
{
|
|
MUSIC_SetErrorCode( MUSIC_FMNotDetected );
|
|
return( MUSIC_Error );
|
|
}
|
|
|
|
// Init the fm routines
|
|
AL_Init( card );
|
|
|
|
Funcs->NoteOff = AL_NoteOff;
|
|
Funcs->NoteOn = AL_NoteOn;
|
|
Funcs->PolyAftertouch = NULL;
|
|
Funcs->ControlChange = AL_ControlChange;
|
|
Funcs->ProgramChange = AL_ProgramChange;
|
|
Funcs->ChannelAftertouch = NULL;
|
|
Funcs->PitchBend = AL_SetPitchBend;
|
|
Funcs->ReleasePatches = NULL;
|
|
Funcs->LoadPatch = NULL;
|
|
Funcs->SetVolume = NULL;
|
|
Funcs->GetVolume = NULL;
|
|
|
|
switch( card )
|
|
{
|
|
case SoundBlaster :
|
|
if ( BLASTER_CardHasMixer() )
|
|
{
|
|
BLASTER_SaveMidiVolume();
|
|
Funcs->SetVolume = BLASTER_SetMidiVolume;
|
|
Funcs->GetVolume = BLASTER_GetMidiVolume;
|
|
}
|
|
else
|
|
{
|
|
Funcs->SetVolume = NULL;
|
|
Funcs->GetVolume = NULL;
|
|
}
|
|
break;
|
|
|
|
case Adlib :
|
|
Funcs->SetVolume = NULL;
|
|
Funcs->GetVolume = NULL;
|
|
break;
|
|
|
|
case ProAudioSpectrum :
|
|
case SoundMan16 :
|
|
Funcs->SetVolume = NULL;
|
|
Funcs->GetVolume = NULL;
|
|
|
|
passtatus = PAS_SaveMusicVolume();
|
|
if ( passtatus == PAS_Ok )
|
|
{
|
|
Funcs->SetVolume = PAS_SetFMVolume;
|
|
Funcs->GetVolume = PAS_GetFMVolume;
|
|
}
|
|
break;
|
|
}
|
|
|
|
MIDI_SetMidiFuncs( Funcs );
|
|
|
|
return( status );
|
|
}
|
|
|
|
int MUSIC_InitMidi
|
|
(
|
|
int card,
|
|
midifuncs *Funcs,
|
|
int Address
|
|
)
|
|
|
|
{
|
|
int status;
|
|
|
|
status = MUSIC_Ok;
|
|
|
|
if ( ( card == WaveBlaster ) || ( card == SoundCanvas ) ||
|
|
( card == GenMidi ) )
|
|
{
|
|
// Setup WaveBlaster Daughterboard clone
|
|
// (ie. SoundCanvas DB, TurtleBeach Rio)
|
|
BLASTER_SetupWaveBlaster();
|
|
}
|
|
|
|
if ( card == SoundScape )
|
|
{
|
|
Address = SOUNDSCAPE_GetMIDIPort();
|
|
if ( Address < SOUNDSCAPE_Ok )
|
|
{
|
|
MUSIC_SetErrorCode( MUSIC_SoundCardError );
|
|
return( MUSIC_Error );
|
|
}
|
|
}
|
|
|
|
if ( MPU_Init( Address ) != MPU_Ok )
|
|
{
|
|
MUSIC_SetErrorCode( MUSIC_MPU401Error );
|
|
return( MUSIC_Error );
|
|
}
|
|
|
|
Funcs->NoteOff = MPU_NoteOff;
|
|
Funcs->NoteOn = MPU_NoteOn;
|
|
Funcs->PolyAftertouch = MPU_PolyAftertouch;
|
|
Funcs->ControlChange = MPU_ControlChange;
|
|
Funcs->ProgramChange = MPU_ProgramChange;
|
|
Funcs->ChannelAftertouch = MPU_ChannelAftertouch;
|
|
Funcs->PitchBend = MPU_PitchBend;
|
|
Funcs->ReleasePatches = NULL;
|
|
Funcs->LoadPatch = NULL;
|
|
Funcs->SetVolume = NULL;
|
|
Funcs->GetVolume = NULL;
|
|
|
|
if ( card == WaveBlaster )
|
|
{
|
|
if ( BLASTER_CardHasMixer() )
|
|
{
|
|
BLASTER_SaveMidiVolume();
|
|
Funcs->SetVolume = BLASTER_SetMidiVolume;
|
|
Funcs->GetVolume = BLASTER_GetMidiVolume;
|
|
}
|
|
}
|
|
|
|
MIDI_SetMidiFuncs( Funcs );
|
|
|
|
return( status );
|
|
}
|
|
|
|
int MUSIC_InitGUS
|
|
(
|
|
midifuncs *Funcs
|
|
)
|
|
|
|
{
|
|
int status;
|
|
|
|
status = MUSIC_Ok;
|
|
|
|
if ( GUSMIDI_Init() != GUS_Ok )
|
|
{
|
|
MUSIC_SetErrorCode( MUSIC_SoundCardError );
|
|
return( MUSIC_Error );
|
|
}
|
|
|
|
Funcs->NoteOff = GUSMIDI_NoteOff;
|
|
Funcs->NoteOn = GUSMIDI_NoteOn;
|
|
Funcs->PolyAftertouch = NULL;
|
|
Funcs->ControlChange = GUSMIDI_ControlChange;
|
|
Funcs->ProgramChange = GUSMIDI_ProgramChange;
|
|
Funcs->ChannelAftertouch = NULL;
|
|
Funcs->PitchBend = GUSMIDI_PitchBend;
|
|
Funcs->ReleasePatches = NULL;//GUSMIDI_ReleasePatches;
|
|
Funcs->LoadPatch = NULL;//GUSMIDI_LoadPatch;
|
|
Funcs->SetVolume = GUSMIDI_SetVolume;
|
|
Funcs->GetVolume = GUSMIDI_GetVolume;
|
|
|
|
MIDI_SetMidiFuncs( Funcs );
|
|
|
|
return( status );
|
|
}
|
|
|
|
|
|
/*---------------------------------------------------------------------
|
|
Function: MUSIC_FadeRoutine
|
|
|
|
Fades music volume from current level to another over a specified
|
|
period of time.
|
|
---------------------------------------------------------------------*/
|
|
|
|
static void MUSIC_FadeRoutine
|
|
(
|
|
task *Task
|
|
)
|
|
|
|
{
|
|
int volume;
|
|
|
|
MUSIC_CurrentFadeVolume += MUSIC_FadeRate;
|
|
if ( MUSIC_FadeLength == 0 )
|
|
{
|
|
MIDI_SetVolume( MUSIC_EndingFadeVolume );
|
|
TS_Terminate( Task );
|
|
MUSIC_FadeTask = NULL;
|
|
}
|
|
else
|
|
{
|
|
MUSIC_FadeLength--;
|
|
// if ( ( MUSIC_SoundDevice == GenMidi ) &&
|
|
// ( ( MUSIC_FadeLength % 12 ) != 0 ) )
|
|
// {
|
|
// return;
|
|
// }
|
|
|
|
volume = MUSIC_CurrentFadeVolume >> 7;
|
|
if ( MUSIC_LastFadeVolume != volume )
|
|
{
|
|
MUSIC_LastFadeVolume = volume;
|
|
MIDI_SetVolume( volume );
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/*---------------------------------------------------------------------
|
|
Function: MUSIC_FadeVolume
|
|
|
|
Fades music volume from current level to another over a specified
|
|
period of time.
|
|
---------------------------------------------------------------------*/
|
|
|
|
int MUSIC_FadeVolume
|
|
(
|
|
int tovolume,
|
|
int milliseconds
|
|
)
|
|
|
|
{
|
|
int fromvolume;
|
|
|
|
if ( ( MUSIC_SoundDevice == ProAudioSpectrum ) ||
|
|
( MUSIC_SoundDevice == SoundMan16 ) ||
|
|
( MUSIC_SoundDevice == GenMidi ) ||
|
|
( MUSIC_SoundDevice == SoundScape ) ||
|
|
( MUSIC_SoundDevice == SoundCanvas ) )
|
|
{
|
|
MIDI_SetVolume( tovolume );
|
|
return( MUSIC_Ok );
|
|
}
|
|
|
|
if ( MUSIC_FadeTask != NULL )
|
|
{
|
|
MUSIC_StopFade();
|
|
}
|
|
|
|
tovolume = max( 0, tovolume );
|
|
tovolume = min( 255, tovolume );
|
|
fromvolume = MUSIC_GetVolume();
|
|
|
|
MUSIC_FadeLength = milliseconds / 25;
|
|
MUSIC_FadeRate = ( ( tovolume - fromvolume ) << 7 ) / MUSIC_FadeLength;
|
|
MUSIC_LastFadeVolume = fromvolume;
|
|
MUSIC_CurrentFadeVolume = fromvolume << 7;
|
|
MUSIC_EndingFadeVolume = tovolume;
|
|
|
|
MUSIC_FadeTask = TS_ScheduleTask( MUSIC_FadeRoutine, 40, 1, NULL );
|
|
if ( MUSIC_FadeTask == NULL )
|
|
{
|
|
MUSIC_SetErrorCode( MUSIC_TaskManError );
|
|
return( MUSIC_Warning );
|
|
}
|
|
|
|
TS_Dispatch();
|
|
return( MUSIC_Ok );
|
|
}
|
|
|
|
|
|
/*---------------------------------------------------------------------
|
|
Function: MUSIC_FadeActive
|
|
|
|
Returns whether the fade routine is active.
|
|
---------------------------------------------------------------------*/
|
|
|
|
int MUSIC_FadeActive
|
|
(
|
|
void
|
|
)
|
|
|
|
{
|
|
return( MUSIC_FadeTask != NULL );
|
|
}
|
|
|
|
|
|
/*---------------------------------------------------------------------
|
|
Function: MUSIC_StopFade
|
|
|
|
Stops fading the music.
|
|
---------------------------------------------------------------------*/
|
|
|
|
void MUSIC_StopFade
|
|
(
|
|
void
|
|
)
|
|
|
|
{
|
|
if ( MUSIC_FadeTask != NULL )
|
|
{
|
|
TS_Terminate( MUSIC_FadeTask );
|
|
MUSIC_FadeTask = NULL;
|
|
}
|
|
}
|
|
|
|
|
|
/*---------------------------------------------------------------------
|
|
Function: MUSIC_RerouteMidiChannel
|
|
|
|
Sets callback function to reroute MIDI commands from specified
|
|
function.
|
|
---------------------------------------------------------------------*/
|
|
|
|
void MUSIC_RerouteMidiChannel
|
|
(
|
|
int channel,
|
|
int cdecl ( *function )( int event, int c1, int c2 )
|
|
)
|
|
|
|
{
|
|
MIDI_RerouteMidiChannel( channel, function );
|
|
}
|
|
|
|
|
|
/*---------------------------------------------------------------------
|
|
Function: MUSIC_RegisterTimbreBank
|
|
|
|
Halts playback of all sounds.
|
|
---------------------------------------------------------------------*/
|
|
|
|
void MUSIC_RegisterTimbreBank
|
|
(
|
|
unsigned char *timbres
|
|
)
|
|
|
|
{
|
|
AL_RegisterTimbreBank( timbres );
|
|
}
|