raze-gles/polymer/eduke32/source/jaudiolib/music.c

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/*
Copyright (C) 1994-1995 Apogee Software, Ltd.
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
Modifications for JonoF's port by Jonathon Fowler (jonof@edgenetwk.com)
*/
/**********************************************************************
module: MUSIC.C
author: James R. Dose
date: March 25, 1994
Device independant music playback routines.
(c) Copyright 1994 James R. Dose. All Rights Reserved.
**********************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include "music.h"
#include "midi.h"
#include "mpu401.h"
#define TRUE ( 1 == 1 )
#define FALSE ( !TRUE )
#ifdef __MINGW32__
#define max(a,b) (((a)>(b))?(a):(b))
#define min(a,b) (((a)<(b))?(a):(b))
#endif
int MUSIC_SoundDevice = -1;
int MUSIC_ErrorCode = MUSIC_Ok;
static midifuncs MUSIC_MidiFunctions;
static int MUSIC_FadeLength;
static int MUSIC_FadeRate;
static unsigned MUSIC_CurrentFadeVolume;
static unsigned MUSIC_LastFadeVolume;
static int MUSIC_EndingFadeVolume;
int MUSIC_InitMidi( int card, midifuncs *Funcs, int Address );
#define MUSIC_SetErrorCode( status ) \
MUSIC_ErrorCode = ( status );
/*---------------------------------------------------------------------
Function: MUSIC_ErrorString
Returns a pointer to the error message associated with an error
number. A -1 returns a pointer the current error.
---------------------------------------------------------------------*/
char *MUSIC_ErrorString
(
int ErrorNumber
)
{
char *ErrorString;
switch( ErrorNumber )
{
case MUSIC_Warning :
case MUSIC_Error :
ErrorString = MUSIC_ErrorString( MUSIC_ErrorCode );
break;
case MUSIC_Ok :
ErrorString = "Music ok.";
break;
case MUSIC_ASSVersion :
ErrorString = "Apogee Sound System Version WinMM "
"Programmed by Jim Dose, Ported by Jonathon Fowler\n"
"(c) Copyright 1996 James R. Dose. All Rights Reserved.\n";
break;
case MUSIC_SoundCardError :
case MUSIC_MPU401Error :
ErrorString = "Could not detect MPU-401.";
break;
case MUSIC_InvalidCard :
ErrorString = "Invalid Music device.";
break;
case MUSIC_MidiError :
ErrorString = "Error playing MIDI file.";
break;
case MUSIC_TaskManError :
ErrorString = "TaskMan error.";
break;
case MUSIC_DPMI_Error :
ErrorString = "DPMI Error in MUSIC.";
break;
default :
ErrorString = "Unknown Music error code.";
break;
}
return( ErrorString );
}
/*---------------------------------------------------------------------
Function: MUSIC_Init
Selects which sound device to use.
---------------------------------------------------------------------*/
int MUSIC_Init
(
int SoundCard,
int Address
)
{
int i;
int status;
for( i = 0; i < 128; i++ )
{
MIDI_PatchMap[ i ] = i;
}
MUSIC_SoundDevice = SoundCard;
status = MUSIC_InitMidi( SoundCard, &MUSIC_MidiFunctions, Address );
return( status );
}
/*---------------------------------------------------------------------
Function: MUSIC_Shutdown
Terminates use of sound device.
---------------------------------------------------------------------*/
int MUSIC_Shutdown
(
void
)
{
int status;
status = MUSIC_Ok;
MIDI_StopSong();
//MPU_Reset();
return( status );
}
/*---------------------------------------------------------------------
Function: MUSIC_SetVolume
Sets the volume of music playback.
---------------------------------------------------------------------*/
void MUSIC_SetVolume
(
int volume
)
{
volume = max( 0, volume );
volume = min( volume, 255 );
if ( MUSIC_SoundDevice != -1 )
{
MIDI_SetVolume( volume );
}
}
/*---------------------------------------------------------------------
Function: MUSIC_SetMidiChannelVolume
Sets the volume of music playback on the specified MIDI channel.
---------------------------------------------------------------------*/
void MUSIC_SetMidiChannelVolume
(
int channel,
int volume
)
{
MIDI_SetUserChannelVolume( channel, volume );
}
/*---------------------------------------------------------------------
Function: MUSIC_ResetMidiChannelVolumes
Sets the volume of music playback on all MIDI channels to full volume.
---------------------------------------------------------------------*/
void MUSIC_ResetMidiChannelVolumes
(
void
)
{
MIDI_ResetUserChannelVolume();
}
/*---------------------------------------------------------------------
Function: MUSIC_GetVolume
Returns the volume of music playback.
---------------------------------------------------------------------*/
int MUSIC_GetVolume
(
void
)
{
if ( MUSIC_SoundDevice == -1 )
{
return( 0 );
}
return( MIDI_GetVolume() );
}
/*---------------------------------------------------------------------
Function: MUSIC_SetLoopFlag
Set whether the music will loop or end when it reaches the end of
the song.
---------------------------------------------------------------------*/
void MUSIC_SetLoopFlag
(
int loopflag
)
{
MIDI_SetLoopFlag( loopflag );
}
/*---------------------------------------------------------------------
Function: MUSIC_SongPlaying
Returns whether there is a song playing.
---------------------------------------------------------------------*/
int MUSIC_SongPlaying
(
void
)
{
return( MIDI_SongPlaying() );
}
/*---------------------------------------------------------------------
Function: MUSIC_Continue
Continues playback of a paused song.
---------------------------------------------------------------------*/
void MUSIC_Continue
(
void
)
{
MIDI_ContinueSong();
}
/*---------------------------------------------------------------------
Function: MUSIC_Pause
Pauses playback of a song.
---------------------------------------------------------------------*/
void MUSIC_Pause
(
void
)
{
MIDI_PauseSong();
}
/*---------------------------------------------------------------------
Function: MUSIC_StopSong
Stops playback of current song.
---------------------------------------------------------------------*/
int MUSIC_StopSong
(
void
)
{
MUSIC_StopFade();
MIDI_StopSong();
MUSIC_SetErrorCode( MUSIC_Ok );
return( MUSIC_Ok );
}
/*---------------------------------------------------------------------
Function: MUSIC_PlaySong
Begins playback of MIDI song.
---------------------------------------------------------------------*/
int MUSIC_PlaySong
(
unsigned char *song,
int loopflag
)
{
int status;
MUSIC_StopSong();
status = MIDI_PlaySong( song, loopflag );
if ( status != MIDI_Ok )
{
MUSIC_SetErrorCode( MUSIC_MidiError );
return( MUSIC_Warning );
}
return( MUSIC_Ok );
}
/*---------------------------------------------------------------------
Function: MUSIC_SetContext
Sets the song context.
---------------------------------------------------------------------*/
void MUSIC_SetContext
(
int context
)
{
MIDI_SetContext( context );
}
/*---------------------------------------------------------------------
Function: MUSIC_GetContext
Returns the current song context.
---------------------------------------------------------------------*/
int MUSIC_GetContext
(
void
)
{
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_InitMidi
(
int card,
midifuncs *Funcs,
int Address
)
{
int status;
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 /*MPU_SetVolume*/;
Funcs->GetVolume = NULL /*MPU_GetVolume*/;
MIDI_SetMidiFuncs( Funcs );
return( MIDI_Ok );
}
/*---------------------------------------------------------------------
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;
MIDI_SetVolume( tovolume );
return( MUSIC_Ok );
}
/*---------------------------------------------------------------------
Function: MUSIC_FadeActive
Returns whether the fade routine is active.
---------------------------------------------------------------------*/
int MUSIC_FadeActive
(
void
)
{
return( 0 );
}
/*---------------------------------------------------------------------
Function: MUSIC_StopFade
Stops fading the music.
---------------------------------------------------------------------*/
void MUSIC_StopFade
(
void
)
{
}
/*---------------------------------------------------------------------
Function: MUSIC_RerouteMidiChannel
Sets callback function to reroute MIDI commands from specified
function.
---------------------------------------------------------------------*/
void MUSIC_RerouteMidiChannel
(
int channel,
int ( *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
)
{
}
void MUSIC_Update(void)
{
MIDI_UpdateMusic();
}