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nolibgs_hello_worlds/hello_multi_vag/hello_multi_vag.c

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// Hello multi vag by Schnappy
// August 2021
//
//
// Load VAG samples to the SPU sound buffer and play them back with pad input
//
// See here for more details, file format infos, tools, conversion :
// https://github.com/ABelliqueux/nolibgs_hello_worlds/wiki/VAG
// Docs : see libformat47.pdf p.209
// libover47.pdf, p.271
// libref47.pdf, p.980
#include <sys/types.h>
#include <stdio.h>
#include <libgte.h>
#include <libetc.h>
#include <libgpu.h>
// Sound system
#include <libsnd.h>
#include <libspu.h>
#define VMODE 0 // Video Mode : 0 : NTSC, 1: PAL
#define SCREENXRES 320
#define SCREENYRES 240
#define CENTERX SCREENXRES/2
#define CENTERY SCREENYRES/2
#define MARGINX 0 // margins for text display
#define MARGINY 32
#define FONTSIZE 8 * 7 // Text Field Height
DISPENV disp[2]; // Double buffered DISPENV and DRAWENV
DRAWENV draw[2];
short db = 0; // index of which buffer is used, values 0, 1
// Number of VAG files to load
#define VAG_NBR 8
#define MALLOC_MAX VAG_NBR // Max number of time we can call SpuMalloc
// convert Little endian to Big endian
#define SWAP_ENDIAN32(x) (((x)>>24) | (((x)>>8) & 0xFF00) | (((x)<<8) & 0x00FF0000) | ((x)<<24))
// Memory management table ; allow MALLOC_MAX calls to SpuMalloc() - libref47.pdf p.1044
char spu_malloc_rec[SPU_MALLOC_RECSIZ * (MALLOC_MAX + 1)];
// Custom struct to handle VAG files
typedef struct VAGsound {
u_char * VAGfile; // Pointer to VAG data address
u_long spu_channel; // SPU voice to playback to
u_long spu_address; // SPU address for memory freeing spu mem
} VAGsound;
// VAG header struct (see fileformat47.pdf, p.209)
typedef struct VAGhdr { // All the values in this header must be big endian
char id[4]; // VAGp 4 bytes -> 1 char * 4
unsigned int version; // 4 bytes
unsigned int reserved; // 4 bytes
unsigned int dataSize; // (in bytes) 4 bytes
unsigned int samplingFrequency;// 4 bytes
char reserved2[12]; // 12 bytes -> 1 char * 12
char name[16]; // 16 bytes -> 1 char * 16
// Waveform data after that
} VAGhdr;
// SPU settings
SpuCommonAttr commonAttributes; // structure for changing common voice attributes
SpuVoiceAttr voiceAttributes ; // structure for changing individual voice attributes
// extern VAG files
extern u_char _binary____VAG_0_come_vag_start;
extern u_char _binary____VAG_1_cuek_vag_start;
extern u_char _binary____VAG_2_erro_vag_start;
extern u_char _binary____VAG_3_hehe_vag_start;
extern u_char _binary____VAG_4_m4a1_vag_start;
extern u_char _binary____VAG_5_punc_vag_start;
extern u_char _binary____VAG_7_wron_vag_start;
extern u_char _binary____VAG_8_yooo_vag_start;
// soundBank
VAGsound soundBank[VAG_NBR] = {
{ &_binary____VAG_0_come_vag_start,
SPU_00CH, 0 },
{ &_binary____VAG_1_cuek_vag_start,
SPU_01CH, 0 },
{ &_binary____VAG_2_erro_vag_start,
SPU_02CH, 0 },
{ &_binary____VAG_3_hehe_vag_start,
SPU_03CH, 0 },
{ &_binary____VAG_4_m4a1_vag_start,
SPU_04CH, 0 },
{ &_binary____VAG_5_punc_vag_start,
SPU_05CH, 0 },
{ &_binary____VAG_7_wron_vag_start,
SPU_06CH, 0 },
{ &_binary____VAG_8_yooo_vag_start,
SPU_07CH, 0 }
};
// Prototypes
void initGraph(void);
void display(void);
void initSnd(void);
u_long sendVAGtoSPU(unsigned int VAG_data_size, u_char *VAG_data);
void setVoiceAttr(unsigned int pitch, long channel, unsigned long soundAddr );
u_long setSPUtransfer(VAGsound * sound);
void playSFX(VAGsound * sound);
void initGraph(void)
{
ResetGraph(0);
SetDefDispEnv(&disp[0], 0, 0, SCREENXRES, SCREENYRES);
SetDefDispEnv(&disp[1], 0, SCREENYRES, SCREENXRES, SCREENYRES);
SetDefDrawEnv(&draw[0], 0, SCREENYRES, SCREENXRES, SCREENYRES);
SetDefDrawEnv(&draw[1], 0, 0, SCREENXRES, SCREENYRES);
if (VMODE)
{
SetVideoMode(MODE_PAL);
disp[0].screen.y += 8;
disp[1].screen.y += 8;
}
SetDispMask(1); // Display on screen
setRGB0(&draw[0], 50, 50, 50);
setRGB0(&draw[1], 50, 50, 50);
draw[0].isbg = 1;
draw[1].isbg = 1;
PutDispEnv(&disp[db]);
PutDrawEnv(&draw[db]);
FntLoad(960, 0);
FntOpen(8, 60, 304, 200, 0, 500 );
}
void display(void)
{
DrawSync(0);
VSync(0);
PutDispEnv(&disp[db]);
PutDrawEnv(&draw[db]);
db = !db;
}
// Audio initialisation & functions
void initSnd(void){
SpuInitMalloc(MALLOC_MAX, spu_malloc_rec); // Maximum number of blocks, mem. management table address.
commonAttributes.mask = (SPU_COMMON_MVOLL | SPU_COMMON_MVOLR); // Mask which attributes to set
commonAttributes.mvol.left = 0x3fff; // Master volume left
commonAttributes.mvol.right = 0x3fff; // see libref47.pdf, p.1058
SpuSetCommonAttr(&commonAttributes); // set attributes
SpuSetIRQ(SPU_OFF);
SpuSetKey(SpuOff, SPU_ALLCH);
}
u_long sendVAGtoSPU(unsigned int VAG_data_size, u_char *VAG_data){
u_long transferred;
SpuSetTransferMode(SpuTransByDMA); // DMA transfer; can do other processing during transfer
transferred = SpuWrite (VAG_data + sizeof(VAGhdr), VAG_data_size); // transfer VAG_data_size bytes from VAG_data address to sound buffer
SpuIsTransferCompleted (SPU_TRANSFER_WAIT); // Checks whether transfer is completed and waits for completion
return transferred;
}
void setVoiceAttr(unsigned int pitch, long channel, unsigned long soundAddr ){
voiceAttributes.mask= //~ Attributes (bit string, 1 bit per attribute)
(
SPU_VOICE_VOLL |
SPU_VOICE_VOLR |
SPU_VOICE_PITCH |
SPU_VOICE_WDSA |
SPU_VOICE_ADSR_AMODE |
SPU_VOICE_ADSR_SMODE |
SPU_VOICE_ADSR_RMODE |
SPU_VOICE_ADSR_AR |
SPU_VOICE_ADSR_DR |
SPU_VOICE_ADSR_SR |
SPU_VOICE_ADSR_RR |
SPU_VOICE_ADSR_SL
);
voiceAttributes.voice = channel; //~ Voice (low 24 bits are a bit string, 1 bit per voice )
voiceAttributes.volume.left = 0x0; //~ Volume
voiceAttributes.volume.right = 0x0; //~ Volume
voiceAttributes.pitch = pitch; //~ Interval (set pitch)
voiceAttributes.addr = soundAddr; //~ Waveform data start address
voiceAttributes.a_mode = SPU_VOICE_LINEARIncN; //~ Attack rate mode = Linear Increase - see libref47.pdf p.1091
voiceAttributes.s_mode = SPU_VOICE_LINEARIncN; //~ Sustain rate mode = Linear Increase
voiceAttributes.r_mode = SPU_VOICE_LINEARDecN; //~ Release rate mode = Linear Decrease
voiceAttributes.ar = 0x0; //~ Attack rate
voiceAttributes.dr = 0x0; //~ Decay rate
voiceAttributes.rr = 0x0; //~ Release rate
voiceAttributes.sr = 0x0; //~ Sustain rate
voiceAttributes.sl = 0xf; //~ Sustain level
SpuSetVoiceAttr(&voiceAttributes); // set attributes
}
u_long setSPUtransfer(VAGsound * sound){
// Return spu_address
u_long transferred, spu_address;
u_int pitch;
const VAGhdr * VAGheader = (VAGhdr *) sound->VAGfile;
pitch = (SWAP_ENDIAN32(VAGheader->samplingFrequency) << 12) / 44100L;
spu_address = SpuMalloc(SWAP_ENDIAN32(VAGheader->dataSize)); // Allocate an area of dataSize bytes in the sound buffer.
SpuSetTransferStartAddr(spu_address); // Sets a starting address in the sound buffer
transferred = sendVAGtoSPU(SWAP_ENDIAN32(VAGheader->dataSize), sound->VAGfile);
setVoiceAttr(pitch, sound->spu_channel, spu_address);
// Return 1 if ok, size transferred else.
//~ if (transferred == SWAP_ENDIAN32(VAGheader->dataSize)){
//~ return 1;
//~ }
//~ return transferred;
return spu_address;
}
void playSFX(VAGsound * sound){
// Set voice volume to max
voiceAttributes.mask= ( SPU_VOICE_VOLL | SPU_VOICE_VOLR );
voiceAttributes.voice = sound->spu_channel;
voiceAttributes.volume.left = 0x1000;
voiceAttributes.volume.right = 0x1000;
SpuSetVoiceAttr(&voiceAttributes);
// Play voice
SpuSetKey(SpuOn, sound->spu_channel);
}
int main(void)
{
// Store input values
int pad, oldpad;
u_long spu_address;
// Init all the things !
initGraph();
// Init Spu
SpuInit();
// Init sound settings
initSnd();
// Init Pad
PadInit(0);
// Transfer all VAGs to SPU RAM
// Beware that the SPU only has 512KB of RAM so a 'soundbank' should stay within that limit.
// If more is needed, a second soundbank could be loaded on demand.
for (u_short vag = 0; vag < VAG_NBR; vag++ ){
soundBank[vag].spu_address = setSPUtransfer(&soundBank[vag]);
}
while (1)
{
// Pad
// Use up, down, left, right, triangle, cross, circle, square to play various samples
// Read pad values
pad = PadRead(0);
if (pad & PADLleft && !(oldpad & PADLleft)){
playSFX(&soundBank[0]);
oldpad = pad;
}
if (pad & PADLright && !(oldpad & PADLright)){
playSFX(&soundBank[1]);
oldpad = pad;
}
if (pad & PADLup && !(oldpad & PADLup)){
playSFX(&soundBank[2]);
oldpad = pad;
}
if (pad & PADLdown && !(oldpad & PADLdown)){
playSFX(&soundBank[3]);
oldpad = pad;
}
if (pad & PADRleft && !(oldpad & PADRleft)){
playSFX(&soundBank[4]);
oldpad = pad;
}
if (pad & PADRright && !(oldpad & PADRright)){
playSFX(&soundBank[5]);
oldpad = pad;
}
if (pad & PADRup && !(oldpad & PADRup)){
playSFX(&soundBank[6]);
oldpad = pad;
}
if (pad & PADRdown && !(oldpad & PADRdown)){
playSFX(&soundBank[7]);
oldpad = pad;
}
// Reset oldpad
if (!(pad & PADRdown) ||
!(pad & PADRup) ||
!(pad & PADRleft) ||
!(pad & PADRright) ||
!(pad & PADLdown) ||
!(pad & PADLup) ||
!(pad & PADLleft) ||
!(pad & PADLright)
){ oldpad = pad; }
FntPrint("Hello multi vag ! %d\n", VSync(-1));
FntPrint("Use the pad to play various samples.\n");
FntFlush(-1);
display();
}
return 0;
}
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