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author | Max Horn | 2011-02-09 01:09:01 +0000 |
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committer | Max Horn | 2011-02-09 01:09:01 +0000 |
commit | 42ab839dd6c8a1570b232101eb97f4e54de57935 (patch) | |
tree | 3b763d8913a87482b793e0348c88b9a5f40eecc9 /sound/softsynth/opl/dbopl.h | |
parent | 386203a3d6ce1abf457c9110d695408ec5f01b85 (diff) | |
download | scummvm-rg350-42ab839dd6c8a1570b232101eb97f4e54de57935.tar.gz scummvm-rg350-42ab839dd6c8a1570b232101eb97f4e54de57935.tar.bz2 scummvm-rg350-42ab839dd6c8a1570b232101eb97f4e54de57935.zip |
AUDIO: Rename sound/ dir to audio/
svn-id: r55850
Diffstat (limited to 'sound/softsynth/opl/dbopl.h')
-rw-r--r-- | sound/softsynth/opl/dbopl.h | 283 |
1 files changed, 0 insertions, 283 deletions
diff --git a/sound/softsynth/opl/dbopl.h b/sound/softsynth/opl/dbopl.h deleted file mode 100644 index 87d1045fab..0000000000 --- a/sound/softsynth/opl/dbopl.h +++ /dev/null @@ -1,283 +0,0 @@ -/* - * Copyright (C) 2002-2010 The DOSBox Team - * - * 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. - */ - -// Last synch with DOSBox SVN trunk r3556 - -#ifndef SOUND_SOFTSYNTH_OPL_DBOPL_H -#define SOUND_SOFTSYNTH_OPL_DBOPL_H - -#include "common/scummsys.h" - -#ifndef DISABLE_DOSBOX_OPL - -namespace OPL { -namespace DOSBox { - -//Use 8 handlers based on a small logatirmic wavetabe and an exponential table for volume -#define WAVE_HANDLER 10 -//Use a logarithmic wavetable with an exponential table for volume -#define WAVE_TABLELOG 11 -//Use a linear wavetable with a multiply table for volume -#define WAVE_TABLEMUL 12 - -//Select the type of wave generator routine -#define DBOPL_WAVE WAVE_TABLEMUL - -namespace DBOPL { - -// Type aliases for the DBOPL code -typedef int Bits; -typedef uint Bitu; - -typedef int8 Bit8s; -typedef uint8 Bit8u; - -typedef int16 Bit16s; -typedef uint16 Bit16u; - -typedef int32 Bit32s; -typedef uint32 Bit32u; - -#define DB_FASTCALL -#define GCC_UNLIKELY(x) (x) -#define INLINE inline -// ------------------------------- - -struct Chip; -struct Operator; -struct Channel; - -#if (DBOPL_WAVE == WAVE_HANDLER) -typedef Bits ( DB_FASTCALL *WaveHandler) ( Bitu i, Bitu volume ); -#endif - -typedef Bits ( DBOPL::Operator::*VolumeHandler) ( ); -typedef Channel* ( DBOPL::Channel::*SynthHandler) ( Chip* chip, Bit32u samples, Bit32s* output ); - -//Different synth modes that can generate blocks of data -typedef enum { - sm2AM, - sm2FM, - sm3AM, - sm3FM, - sm4Start, - sm3FMFM, - sm3AMFM, - sm3FMAM, - sm3AMAM, - sm6Start, - sm2Percussion, - sm3Percussion -} SynthMode; - -//Shifts for the values contained in chandata variable -enum { - SHIFT_KSLBASE = 16, - SHIFT_KEYCODE = 24 -}; - -struct Operator { -public: - //Masks for operator 20 values - enum { - MASK_KSR = 0x10, - MASK_SUSTAIN = 0x20, - MASK_VIBRATO = 0x40, - MASK_TREMOLO = 0x80 - }; - - typedef enum { - OFF, - RELEASE, - SUSTAIN, - DECAY, - ATTACK - } State; - - VolumeHandler volHandler; - -#if (DBOPL_WAVE == WAVE_HANDLER) - WaveHandler waveHandler; //Routine that generate a wave -#else - Bit16s* waveBase; - Bit32u waveMask; - Bit32u waveStart; -#endif - Bit32u waveIndex; //WAVE_BITS shifted counter of the frequency index - Bit32u waveAdd; //The base frequency without vibrato - Bit32u waveCurrent; //waveAdd + vibratao - - Bit32u chanData; //Frequency/octave and derived data coming from whatever channel controls this - Bit32u freqMul; //Scale channel frequency with this, TODO maybe remove? - Bit32u vibrato; //Scaled up vibrato strength - Bit32s sustainLevel; //When stopping at sustain level stop here - Bit32s totalLevel; //totalLevel is added to every generated volume - Bit32u currentLevel; //totalLevel + tremolo - Bit32s volume; //The currently active volume - - Bit32u attackAdd; //Timers for the different states of the envelope - Bit32u decayAdd; - Bit32u releaseAdd; - Bit32u rateIndex; //Current position of the evenlope - - Bit8u rateZero; //Bits for the different states of the envelope having no changes - Bit8u keyOn; //Bitmask of different values that can generate keyon - //Registers, also used to check for changes - Bit8u reg20, reg40, reg60, reg80, regE0; - //Active part of the envelope we're in - Bit8u state; - //0xff when tremolo is enabled - Bit8u tremoloMask; - //Strength of the vibrato - 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: - void UpdateAttenuation(); - void UpdateRates( const Chip* chip ); - void UpdateFrequency( ); - - void Write20( const Chip* chip, Bit8u val ); - void Write40( const Chip* chip, Bit8u val ); - void Write60( const Chip* chip, Bit8u val ); - void Write80( const Chip* chip, Bit8u val ); - void WriteE0( const Chip* chip, Bit8u val ); - - bool Silent() const; - void Prepare( const Chip* chip ); - - void KeyOn( Bit8u mask); - void KeyOff( Bit8u mask); - - template< State state> - Bits TemplateVolume( ); - - Bit32s RateForward( Bit32u add ); - Bitu ForwardWave(); - Bitu ForwardVolume(); - - Bits GetSample( Bits modulation ); - Bits GetWave( Bitu index, Bitu vol ); -public: - Operator(); -}; - -struct Channel { - Operator op[2]; - inline Operator* Op( Bitu index ) { - return &( ( this + (index >> 1) )->op[ index & 1 ]); - } - SynthHandler synthHandler; - Bit32u chanData; //Frequency/octave and derived values - Bit32s old[2]; //Old data for feedback - - Bit8u feedback; //Feedback shift - Bit8u regB0; //Register values to check for changes - Bit8u regC0; - //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; - - //Forward the channel data to the operators of the channel - void SetChanData( const Chip* chip, Bit32u data ); - //Change in the chandata, check for new values and if we have to forward to operators - void UpdateFrequency( const Chip* chip, Bit8u fourOp ); - void WriteA0( const Chip* chip, Bit8u val ); - void WriteB0( const Chip* chip, Bit8u val ); - void WriteC0( const Chip* chip, Bit8u val ); - void ResetC0( const Chip* chip ); - - //call this for the first channel - template< bool opl3Mode > - void GeneratePercussion( Chip* chip, Bit32s* output ); - - //Generate blocks of data in specific modes - template<SynthMode mode> - Channel* BlockTemplate( Chip* chip, Bit32u samples, Bit32s* output ); - Channel(); -}; - -struct Chip { - //This is used as the base counter for vibrato and tremolo - Bit32u lfoCounter; - Bit32u lfoAdd; - - - Bit32u noiseCounter; - Bit32u noiseAdd; - Bit32u noiseValue; - - //Frequency scales for the different multiplications - Bit32u freqMul[16]; - //Rates for decay and release for rate of this chip - Bit32u linearRates[76]; - //Best match attack rates for the rate of this chip - Bit32u attackRates[76]; - - //18 channels with 2 operators each - Channel chan[18]; - - Bit8u reg104; - Bit8u reg08; - Bit8u reg04; - Bit8u regBD; - Bit8u vibratoIndex; - Bit8u tremoloIndex; - Bit8s vibratoSign; - Bit8u vibratoShift; - Bit8u tremoloValue; - Bit8u vibratoStrength; - Bit8u tremoloStrength; - //Mask for allowed wave forms - Bit8u waveFormMask; - //0 or -1 when enabled - Bit8s opl3Active; - - //Return the maximum amount of samples before and LFO change - Bit32u ForwardLFO( Bit32u samples ); - Bit32u ForwardNoise(); - - void WriteBD( Bit8u val ); - void WriteReg(Bit32u reg, Bit8u val ); - - Bit32u WriteAddr( Bit32u port, Bit8u val ); - - void GenerateBlock2( Bitu samples, Bit32s* output ); - void GenerateBlock3( Bitu samples, Bit32s* output ); - - void Generate( Bit32u samples ); - void Setup( Bit32u r ); - - Chip(); -}; - -void InitTables(); - -} //Namespace -} // End of namespace DOSBox -} // End of namespace OPL - -#endif // !DISABLE_DOSBOX_OPL - -#endif |