#include <tamtypes.h>
#include <kernel.h>
#include <sifrpc.h>
#include <stdarg.h>
#include <string.h>
#include <malloc.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdio.h>
#include "ahx_rpc.h"

Include dependency graph for ahx_rpc.c:

Macros
#define	IOP_MEM 0xbc000000

Functions
void	iop_readwrite (void addr, void buf, u32 size, u32 read)

int	AHX_Init ()

int	AHX_Play ()

int	AHX_Pause ()

int	AHX_SubSong (int songNo)

int	AHX_SetVolume (int volumePercentage)

int	AHX_SetBoost (int boostValue)

int	AHX_ToggleOversampling ()

int	AHX_Quit ()

int	AHX_LoadSongBuffer (char *songdata, int songsize)

int	AHX_LoadSong (char *filename)

Variables
static unsigned	sbuff [64]

static struct t_SifRpcClientData	cd0

char *	songbuffer_addr

int	ahx_init_done = 0

Detailed Description

AHX EE-side RPC code.

Definition in file ahx_rpc.c.

Macro Definition Documentation

◆ IOP_MEM

#define IOP_MEM 0xbc000000

EE mapped IOP mem

Definition at line 30 of file ahx_rpc.c.

Function Documentation

◆ AHX_Init()

int AHX_Init ( )

AHX Init

Sends a call the the loaded AHX IRX, telling it to set things up ready for loading a song.

Definition at line 48 of file ahx_rpc.c.

 {
         int i;
         // struct t_SifDmaTransfer sdt;
  
         // if already init'd, exit
         if (ahx_init_done) return 0;
  
         // bind rpc
         while(1){
                 if (SifBindRpc( &cd0, AHX_IRX, 0) < 0) return -1; // bind error
                 if (cd0.server != 0) break;
         i = 0x10000;
         while(i--);
         }
  
         SifCallRpc(&cd0,AHX_INIT,0,(void*)(&sbuff[0]),64,(void*)(&sbuff[0]),64,NULL,NULL);
  
         songbuffer_addr = (char*)sbuff[1];
  
         // set flag, init done
         ahx_init_done = 1;
         return 0;
 }

References AHX_INIT, ahx_init_done, AHX_IRX, cd0, NULL, sbuff, SifBindRpc(), SifCallRpc(), and songbuffer_addr.

◆ AHX_LoadSong()

int AHX_LoadSong ( char * filename )

AHX LongSongBuffer

This loads a song from disk etc. It loads the songdata into memory and passes it to LongSongBuffer.

Returns: number of subsongs.

Definition at line 191 of file ahx_rpc.c.

 {
         int fd, fdSize;
         char* buffer;
  
         fd = open(filename, O_RDONLY);
         if(fd < 0)
         {
                  printf("ERROR LOADING SONG\n");
                  return -1;
         }
         fdSize = lseek(fd, 0, SEEK_END);
         lseek(fd, 0, SEEK_SET);
         buffer = malloc(fdSize);
         if(!buffer)
         {
                  printf("ERROR ALLOCATING SONG MEMORY SONG\n");
                  return -1;
         }
         read(fd, buffer, fdSize);
         close(fd);
         return AHX_LoadSongBuffer(buffer, fdSize);
 }

References AHX_LoadSongBuffer(), and buffer.

◆ AHX_LoadSongBuffer()

int AHX_LoadSongBuffer	(	char *	songdata,
		int	songsize
	)

AHX LongSongBuffer

This loads a song from a buffer in memory. It copies [songsize] bytes from [songdata] to the IOP memory song buffer.

Returns: number of subsongs.

Definition at line 167 of file ahx_rpc.c.

 {
         int i;
  
         // write song data to IOP song buffer
         iop_readwrite(songbuffer_addr, songdata, songsize, 0);
  
         while(1){
                 if (SifBindRpc( &cd0, AHX_IRX, 0) < 0) return -1;
                 if (cd0.server != 0) break;
         i = 0x10000;
         while(i--);
         }
  
         // set oversample and boost
         sbuff[0] = (unsigned)songsize;
  
         // call rpc
         SifCallRpc(&cd0,AHX_LOADSONG,0,(void*)(&sbuff[0]),64,(void*)(&sbuff[0]),64,NULL,NULL);
  
         // return number of sub-songs
         return (int)sbuff[1];
 }

References AHX_IRX, AHX_LOADSONG, cd0, iop_readwrite(), NULL, sbuff, SifBindRpc(), SifCallRpc(), and songbuffer_addr.

Referenced by AHX_LoadSong().

◆ AHX_Pause()

int AHX_Pause ( )

AHX Pause

Sends a call the the loaded AHX IRX, telling it to pause the currently loaded song.

Definition at line 86 of file ahx_rpc.c.

 {
         int i;
         while(1){
                 if (SifBindRpc( &cd0, AHX_IRX, 0) < 0) return -1;
                 if (cd0.server != 0) break;
         i = 0x10000;
         while(i--);
         }
         SifCallRpc(&cd0,AHX_PAUSE,0,(void*)(&sbuff[0]),64,(void*)(&sbuff[0]),64,NULL,NULL);
         return 0;
 }

References AHX_IRX, AHX_PAUSE, cd0, NULL, sbuff, SifBindRpc(), and SifCallRpc().

◆ AHX_Play()

int AHX_Play ( )

AHX Play

Sends a call the the loaded AHX IRX, telling it to play the currently loaded song.

Definition at line 73 of file ahx_rpc.c.

 {
         int i;
         while(1){
                 if (SifBindRpc( &cd0, AHX_IRX, 0) < 0) return -1;
                 if (cd0.server != 0) break;
         i = 0x10000;
         while(i--);
         }
         SifCallRpc(&cd0,AHX_PLAY,0,(void*)(&sbuff[0]),64,(void*)(&sbuff[0]),64,NULL,NULL);
         return 0;
 }

References AHX_IRX, AHX_PLAY, cd0, NULL, sbuff, SifBindRpc(), and SifCallRpc().

◆ AHX_Quit()

int AHX_Quit ( )

AHX Quit

Sends a call the the loaded AHX IRX, telling it to quit. This frees up IOP mem, quites threads, deletes semaphores and all that jazz....

Definition at line 154 of file ahx_rpc.c.

 {
         int i;
         while(1){
                 if (SifBindRpc( &cd0, AHX_IRX, 0) < 0) return -1;
                 if (cd0.server != 0) break;
         i = 0x10000;
         while(i--);
         }
         SifCallRpc(&cd0,AHX_QUIT,0,(void*)(&sbuff[0]),64,(void*)(&sbuff[0]),64,NULL,NULL);
         return 0;
 }

References AHX_IRX, AHX_QUIT, cd0, NULL, sbuff, SifBindRpc(), and SifCallRpc().

◆ AHX_SetBoost()

int AHX_SetBoost ( int boostValue )

AHX Set Boost

Sends a call the the loaded AHX IRX, telling it to change the output boost value. Boost value multiplies the level of the output for the AHX Mixer. A boost value of 1 is twice as load as a boost value of 0. A boost value of 3 is twice as load as 2 etc etc (ala DB)

Definition at line 127 of file ahx_rpc.c.

 {
         int i;
         while(1){
                 if (SifBindRpc( &cd0, AHX_IRX, 0) < 0) return -1;
                 if (cd0.server != 0) break;
         i = 0x10000;
         while(i--);
         }
         sbuff[0] = (unsigned)boostValue;
         SifCallRpc(&cd0,AHX_SETBOOST,0,(void*)(&sbuff[0]),64,(void*)(&sbuff[0]),64,NULL,NULL);
         return 0;
 }

References AHX_IRX, AHX_SETBOOST, cd0, NULL, sbuff, SifBindRpc(), and SifCallRpc().

◆ AHX_SetVolume()

int AHX_SetVolume ( int volumePercentage )

AHX Set Volume

Sends a call the the loaded AHX IRX, telling it to change the output volume of the SPU2. volumePercentage argument can range from 0 (0% silence) to 100 (100% full volume)

Definition at line 113 of file ahx_rpc.c.

 {
         int i;
         while(1){
                 if (SifBindRpc( &cd0, AHX_IRX, 0) < 0) return -1;
                 if (cd0.server != 0) break;
         i = 0x10000;
         while(i--);
         }
         sbuff[0] = (unsigned)volumePercentage;
         SifCallRpc(&cd0,AHX_QUIT,0,(void*)(&sbuff[0]),64,(void*)(&sbuff[0]),64,NULL,NULL);
         return 0;
 }

References AHX_IRX, AHX_QUIT, cd0, NULL, sbuff, SifBindRpc(), and SifCallRpc().

◆ AHX_SubSong()

int AHX_SubSong ( int songNo )

AHX Play Subsong

Sends a call the the loaded AHX IRX, telling it to load subsong (songNo). You can determine the number of subsongs by checking the values returned by AHX_LoadSong() and AHX_LoadSongBuffer();

Definition at line 99 of file ahx_rpc.c.

 {
         int i;
         while(1){
                 if (SifBindRpc( &cd0, AHX_IRX, 0) < 0) return -1;
                 if (cd0.server != 0) break;
         i = 0x10000;
         while(i--);
         }
         sbuff[0] = (unsigned)songNo;
         SifCallRpc(&cd0,AHX_PAUSE,0,(void*)(&sbuff[0]),64,(void*)(&sbuff[0]),64,NULL,NULL);
         return 0;
 }

References AHX_IRX, AHX_PAUSE, cd0, NULL, sbuff, SifBindRpc(), and SifCallRpc().

◆ AHX_ToggleOversampling()

int AHX_ToggleOversampling ( )

AHX Toggle Oversampling

Switches oversampling on/off. Oversampling produces a smoother output sound but uses a lot more CPU power. It sounds nasty/slows down for a lot of songs - use with caution (or not at all)

Definition at line 141 of file ahx_rpc.c.

 {
         int i;
         while(1){
                 if (SifBindRpc( &cd0, AHX_IRX, 0) < 0) return -1;
                 if (cd0.server != 0) break;
         i = 0x10000;
         while(i--);
         }
         SifCallRpc(&cd0,AHX_OVERSAMPLING,0,(void*)(&sbuff[0]),64,(void*)(&sbuff[0]),64,NULL,NULL);
         return 0;
 }

References AHX_IRX, AHX_OVERSAMPLING, cd0, NULL, sbuff, SifBindRpc(), and SifCallRpc().

◆ iop_readwrite()

void iop_readwrite	(	void *	addr,
		void *	buf,
		u32	size,
		u32	read
	)

Read/Write IOP Mem

This is an internal function used to read and write directly to IOP memory (write songdata to iop etc)

Definition at line 39 of file ahx_rpc.c.

 {
         DI();
         ee_kmode_enter();
         if (read) memcpy(buf, addr + IOP_MEM, size); else memcpy(addr + IOP_MEM, buf, size);
         ee_kmode_exit();
         EI();
 }

References DI, ee_kmode_enter(), ee_kmode_exit(), EI, and IOP_MEM.

Referenced by AHX_LoadSongBuffer().

Variable Documentation

◆ ahx_init_done

int ahx_init_done = 0

Definition at line 32 of file ahx_rpc.c.

Referenced by AHX_Init().

◆ cd0

struct t_SifRpcClientData cd0

static

Definition at line 27 of file ahx_rpc.c.

Referenced by AHX_Init(), AHX_LoadSongBuffer(), AHX_Pause(), AHX_Play(), AHX_Quit(), AHX_SetBoost(), AHX_SetVolume(), AHX_SubSong(), and AHX_ToggleOversampling().

◆ sbuff

unsigned sbuff[64]