diff options
Diffstat (limited to 'lib/rbcodec/codecs/cRSID/libcRSID.h')
-rw-r--r-- | lib/rbcodec/codecs/cRSID/libcRSID.h | 166 |
1 files changed, 2 insertions, 164 deletions
diff --git a/lib/rbcodec/codecs/cRSID/libcRSID.h b/lib/rbcodec/codecs/cRSID/libcRSID.h index 23c8dbcd28..18dadc4a58 100644 --- a/lib/rbcodec/codecs/cRSID/libcRSID.h +++ b/lib/rbcodec/codecs/cRSID/libcRSID.h @@ -10,13 +10,9 @@ enum cRSID_StatusCodes { CRSID_STATUS_OK=0, CRSID_ERROR_INIT=-1, CRSID_ERROR_ typedef struct cRSID_SIDheader cRSID_SIDheader; typedef struct cRSID_C64instance cRSID_C64instance; -typedef struct cRSID_CPUinstance cRSID_CPUinstance; -typedef struct cRSID_SIDinstance cRSID_SIDinstance; -typedef struct cRSID_CIAinstance cRSID_CIAinstance; -typedef struct cRSID_VICinstance cRSID_VICinstance; -cRSID_C64instance cRSID_C64; //the only global object (for faster & simpler access than with struct-pointers, in some places) +extern cRSID_C64instance cRSID_C64; //the only global object (for faster & simpler access than with struct-pointers, in some places) // Main API functions (mainly in libcRSID.c) @@ -30,61 +26,7 @@ void cRSID_close (void); //close sound etc. #endif cRSID_SIDheader* cRSID_processSIDfile (cRSID_C64instance* C64, unsigned char* filedata, int filesize); //in host/file.c, copy SID-data to C64 memory void cRSID_initSIDtune (cRSID_C64instance* C64, cRSID_SIDheader* SIDheader, char subtune); //init tune/subtune -static inline signed short cRSID_generateSample (cRSID_C64instance* C64); //in host/audio.c, calculate a single sample - - -//Internal functions - -// C64/C64.c -cRSID_C64instance* cRSID_createC64 (cRSID_C64instance* C64, unsigned short samplerate); -void cRSID_setC64 (cRSID_C64instance* C64); //configure hardware (SIDs) for SID-tune -void cRSID_initC64 (cRSID_C64instance* C64); //hard-reset -int cRSID_emulateC64 (cRSID_C64instance* C64); -static inline short cRSID_playPSIDdigi (cRSID_C64instance* C64); -// C64/MEM.c -static inline unsigned char* cRSID_getMemReadPtr (register unsigned short address); //for global cSID_C64 fast-access -static inline unsigned char* cRSID_getMemReadPtrC64 (cRSID_C64instance* C64, register unsigned short address); //maybe slower -static inline unsigned char* cRSID_getMemWritePtr (register unsigned short address); //for global cSID_C64 fast-access -static inline unsigned char* cRSID_getMemWritePtrC64 (cRSID_C64instance* C64, register unsigned short address); //maybe slower -static inline unsigned char cRSID_readMem (register unsigned short address); //for global cSID_C64 fast-access -static inline unsigned char cRSID_readMemC64 (cRSID_C64instance* C64, register unsigned short address); //maybe slower -static inline void cRSID_writeMem (register unsigned short address, register unsigned char data); //for global cSID_C64 fast-access -static inline void cRSID_writeMemC64 (cRSID_C64instance* C64, register unsigned short address, register unsigned char data); //maybe slower -void cRSID_setROMcontent (cRSID_C64instance* C64); //KERNAL, BASIC -void cRSID_initMem (cRSID_C64instance* C64); -// C64/CPU.c -void cRSID_initCPU (cRSID_CPUinstance* CPU, unsigned short mempos); -unsigned char cRSID_emulateCPU (void); //direct instances inside for hopefully faster operation -static inline char cRSID_handleCPUinterrupts (cRSID_CPUinstance* CPU); -// C64/SID.c -void cRSID_createSIDchip (cRSID_C64instance* C64, cRSID_SIDinstance* SID, unsigned short model, unsigned short baseaddress); -void cRSID_initSIDchip (cRSID_SIDinstance* SID); -void cRSID_emulateADSRs (cRSID_SIDinstance *SID, char cycles); -int cRSID_emulateWaves (cRSID_SIDinstance* SID); -// C64/CIA.c -void cRSID_createCIAchip (cRSID_C64instance* C64, cRSID_CIAinstance* CIA, unsigned short baseaddress); -void cRSID_initCIAchip (cRSID_CIAinstance* CIA); -static inline char cRSID_emulateCIA (cRSID_CIAinstance* CIA, char cycles); -static inline void cRSID_writeCIAIRQmask (cRSID_CIAinstance* CIA, unsigned char value); -static inline void cRSID_acknowledgeCIAIRQ (cRSID_CIAinstance* CIA); -// C64/VIC.c -void cRSID_createVICchip (cRSID_C64instance* C64, cRSID_VICinstance* VIC, unsigned short baseaddress); -void cRSID_initVICchip (cRSID_VICinstance* VIC); -static inline char cRSID_emulateVIC (cRSID_VICinstance* VIC, char cycles); -static inline void cRSID_acknowledgeVICrasterIRQ (cRSID_VICinstance* VIC); - -// host/file.c -#ifdef CRSID_PLATFORM_PC -int cRSID_loadSIDfile (unsigned char* SIDfileData, char* filename, int maxlen); //load SID-file to a memory location (and return size) -#endif -// host/audio.c -#ifdef CRSID_PLATFORM_PC -void* cRSID_initSound (cRSID_C64instance* C64, unsigned short samplerate, unsigned short buflen); -void cRSID_startSound (void); -void cRSID_stopSound (void); -void cRSID_closeSound (void); -void cRSID_generateSound (cRSID_C64instance* C64, unsigned char* buf, unsigned short len); -#endif +signed short cRSID_generateSample (cRSID_C64instance* C64); //in host/audio.c, calculate a single sample struct cRSID_SIDheader { //Offset: default/info: @@ -114,108 +56,4 @@ struct cRSID_SIDheader { //Offset: default/info: }; //music-program follows right after the header -struct cRSID_CPUinstance { - cRSID_C64instance* C64; //reference to the containing C64 - unsigned int PC; - short int A, SP; - unsigned char X, Y, ST; //STATUS-flags: N V - B D I Z C - unsigned char PrevNMI; //used for NMI leading edge detection -}; - - -struct cRSID_SIDinstance { - //SID-chip data: - cRSID_C64instance* C64; //reference to the containing C64 - unsigned short ChipModel; //values: 8580 / 6581 - unsigned short BaseAddress; //SID-baseaddress location in C64-memory (IO) - unsigned char* BasePtr; //SID-baseaddress location in host's memory - //ADSR-related: - unsigned char ADSRstate[15]; - unsigned short RateCounter[15]; - unsigned char EnvelopeCounter[15]; - unsigned char ExponentCounter[15]; - //Wave-related: - int PhaseAccu[15]; //28bit precision instead of 24bit - int PrevPhaseAccu[15]; //(integerized ClockRatio fractionals, WebSID has similar solution) - unsigned char SyncSourceMSBrise; - unsigned int RingSourceMSB; - unsigned int NoiseLFSR[15]; - unsigned int PrevWavGenOut[15]; - unsigned char PrevWavData[15]; - //Filter-related: - int PrevLowPass; - int PrevBandPass; - //Output-stage: - signed int PrevVolume; //lowpass-filtered version of Volume-band register -}; - - -struct cRSID_CIAinstance { - cRSID_C64instance* C64; //reference to the containing C64 - char ChipModel; //old or new CIA? (have 1 cycle difference in cases) - unsigned short BaseAddress; //CIA-baseaddress location in C64-memory (IO) - unsigned char* BasePtrWR; //CIA-baseaddress location in host's memory for writing - unsigned char* BasePtrRD; //CIA-baseaddress location in host's memory for reading -}; - - -struct cRSID_VICinstance { - cRSID_C64instance* C64; //reference to the containing C64 - char ChipModel; //(timing differences between models?) - unsigned short BaseAddress; //VIC-baseaddress location in C64-memory (IO) - unsigned char* BasePtrWR; //VIC-baseaddress location in host's memory for writing - unsigned char* BasePtrRD; //VIC-baseaddress location in host's memory for reading - unsigned short RasterLines; - unsigned char RasterRowCycles; - unsigned char RowCycleCnt; -}; - - -struct cRSID_C64instance { - //platform-related: - unsigned short SampleRate; - //C64-machine related: - unsigned char VideoStandard; //0:NTSC, 1:PAL (based on the SID-header field) - unsigned int CPUfrequency; - unsigned short SampleClockRatio; //ratio of CPU-clock and samplerate - //SID-file related: - union { - cRSID_SIDheader* SIDheader; - char* SIDfileData; - }; - unsigned short Attenuation; - char RealSIDmode; - char PSIDdigiMode; - unsigned char SubTune; - unsigned short LoadAddress; - unsigned short InitAddress; - unsigned short PlayAddress; - unsigned short EndAddress; - char TimerSource; //for current subtune, 0:VIC, 1:CIA (as in SID-header) - //PSID-playback related: - //char CIAisSet; //for dynamic CIA setting from player-routine (RealSID substitution) - int FrameCycles; - int FrameCycleCnt; //this is a substitution in PSID-mode for CIA/VIC counters - short PrevRasterLine; - short SampleCycleCnt; - short TenthSecondCnt; - char Finished; - char Returned; - unsigned char IRQ; //collected IRQ line from devices - unsigned char NMI; //collected NMI line from devices - - //Hardware-elements: - cRSID_CPUinstance CPU; - cRSID_SIDinstance SID[CRSID_SIDCOUNT_MAX+1]; - cRSID_CIAinstance CIA[CRSID_CIACOUNT+1]; - cRSID_VICinstance VIC; - //Overlapping system memories, which one is read/written in an address region depends on CPU-port bankselect-bits) - //Address $00 and $01 - data-direction and data-register of port built into CPU (used as bank-selection) (overriding RAM on C64) - unsigned char RAMbank[0x10100]; //$0000..$FFFF RAM (and RAM under IO/ROM/CPUport) - unsigned char IObankWR[0x10100]; //$D000..$DFFF IO-RAM (registers) to write (VIC/SID/CIA/ColorRAM/IOexpansion) - unsigned char IObankRD[0x10100]; //$D000..$DFFF IO-RAM (registers) to read from (VIC/SID/CIA/ColorRAM/IOexpansion) - unsigned char ROMbanks[0x10100]; //$1000..$1FFF/$9000..$9FFF (CHARGEN), $A000..$BFFF (BASIC), $E000..$FFFF (KERNAL) -}; - - #endif //LIBCRSID_HEADER |