valter/dosbox-staging
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Default to use the multiplication table

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Don't use extra envelope bits for exponential wave routines
Use the stereo percussion handler when opl3 is enabled
Init some more variables in the constructors
Shift the volume up once to make opl sound a bit louder


Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@3371
This commit is contained in:
Sjoerd van der Berg 2009-04-27 18:26:20 +00:00
parent 903a10ef9d
commit f5da809617
2 changed files with 43 additions and 29 deletions
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13
src/hardware/dbopl.h
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@ -27,7 +27,7 @@
#define WAVE_TABLEMUL 12
//Select the type of wave generator routine
#define DBOPL_WAVE WAVE_HANDLER
#define DBOPL_WAVE WAVE_TABLEMUL
//Enable vibrato in the output
#define DBOPL_VIBRATO
//Enable tremolo in the output
@ -51,14 +51,14 @@ typedef enum {
smNone,
sm2AM,
sm2FM,
sm2Rhytm,
sm2Percussion,
sm3AM,
sm3FM,
sm3FMFM,
sm3AMFM,
sm3FMAM,
sm3AMAM,
sm3Rhytm,
sm3Percussion,
} SynthMode;
//Shifts for the values contained in chandata variable
@ -121,14 +121,12 @@ public:
Bit8u vibStrength;
//Keep track of the calculated KSR so we can check for changes
Bit8u ksr;
private:
void SetState( Bit8u s );
void UpdateAttack( const Chip* chip );
void UpdateRelease( const Chip* chip );
void UpdateDecay( const Chip* chip );
public:
//is the operator silent?
void UpdateAttenuation();
void UpdateRates( const Chip* chip );
void UpdateFrequency( );
@ -168,7 +166,7 @@ struct Channel {
Bit8u feedback; //Feedback shift
Bit8u regB0; //Register values to check for changes
Bit8u regC0;
//This should correspond with reg104, bit 6 indicates a rhytm channel, bit 7 indicates a silent channel
//This should correspond with reg104, bit 6 indicates a Percussion channel, bit 7 indicates a silent channel
Bit8u fourMask;
Bit8s maskLeft; //Sign extended values for both channel's panning
Bit8s maskRight;
@ -184,12 +182,11 @@ struct Channel {
//call this for the first channel
template< bool opl3Mode >
void GenerateRhytm( Bit32s* output );
void GeneratePercussion( Bit32s* output );
//Generate blocks of data in specific modes
template<SynthMode mode>
Channel* BlockTemplate( );
void BlockRhytm( );
Channel();
};