303 lines
11 KiB
C
303 lines
11 KiB
C
|
// XA multi sample playback example
|
||
|
|
//
|
||
|
|
// Use an interleaved XA file to store multiple sound effects and use pre-calculated offset to play them back.
|
||
|
|
// Use up, down, left, right, triangle, cross, circle, square to play various samples.
|
||
|
|
// If this seems complicated, first study the simple XA playback example : https://github.com/ABelliqueux/nolibgs_hello_worlds/tree/main/hello_xa
|
||
|
|
//
|
||
|
|
// base on `psyq/addons/scee/CD/XAPLAYER`
|
||
|
|
// Refs : http://psx.arthus.net/code/XA/XATUT.pdf
|
||
|
|
// http://psx.arthus.net/code/XA/xatut.zip
|
||
|
|
// http://psx.arthus.net/code/XA/XA%20ADPCM%20documentation.txt
|
||
|
|
// Schnappy 2021
|
||
|
|
#include <sys/types.h>
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <libgte.h>
|
||
|
|
#include <libetc.h>
|
||
|
|
#include <libgpu.h>
|
||
|
|
// CD library
|
||
|
|
#include <libcd.h>
|
||
|
|
// SPU library
|
||
|
|
#include <libspu.h>
|
||
|
|
|
||
|
|
#define VMODE 0 // Video Mode : 0 : NTSC, 1: PAL
|
||
|
|
#define SCREENXRES 320 // Screen width
|
||
|
|
#define SCREENYRES 240 + (VMODE << 4) // Screen height : If VMODE is 0 = 240, if VMODE is 1 = 256
|
||
|
|
#define CENTERX SCREENXRES/2 // Center of screen on x
|
||
|
|
#define CENTERY SCREENYRES/2 // Center of screen on y
|
||
|
|
#define MARGINX 0 // margins for text display
|
||
|
|
#define MARGINY 32
|
||
|
|
#define FONTSIZE 8 * 16 // 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
|
||
|
|
|
||
|
|
// SPU attributes
|
||
|
|
SpuCommonAttr spuSettings;
|
||
|
|
#define CD_SECTOR_SIZE 2048
|
||
|
|
// XA
|
||
|
|
// Sector offset for XA data 4: simple speed, 8: double speed
|
||
|
|
#define XA_CHANNELS 8
|
||
|
|
#define XA_CDSPEED XA_CHANNELS >> 2
|
||
|
|
// Number of XA samples ( != # of XA files )
|
||
|
|
#define XA_TRACKS 8
|
||
|
|
|
||
|
|
typedef struct XAsound {
|
||
|
|
u_int id;
|
||
|
|
u_int size;
|
||
|
|
// We can find size in sector : size / 2336, start value begins at 23, end value is at start + offset ( (size / 2336)-1 * #channels )
|
||
|
|
// subsequent start value have an 8 bytes offset (n-1.end + 8)
|
||
|
|
u_char file, channel;
|
||
|
|
u_int start, end;
|
||
|
|
int cursor;
|
||
|
|
} XAsound;
|
||
|
|
|
||
|
|
typedef struct XAbank {
|
||
|
|
u_int index;
|
||
|
|
int offset;
|
||
|
|
XAsound samples[];
|
||
|
|
} XAbank;
|
||
|
|
|
||
|
|
XAbank soundBank = {
|
||
|
|
8,
|
||
|
|
0,
|
||
|
|
{
|
||
|
|
// channel 5
|
||
|
|
// id size file channel start end cursor
|
||
|
|
{ 0, 18688, 0, 5, 0, 56, -1 },
|
||
|
|
{ 1, 44384, 0, 5 , 144, 288, -1 },
|
||
|
|
// channel 6
|
||
|
|
{ 2, 32704, 0, 6 , 0, 104, -1 },
|
||
|
|
{ 3, 56064, 0, 6 , 196, 380, -1 },
|
||
|
|
{ 4, 53728, 0, 6 , 468, 644, -1 },
|
||
|
|
// channel 7
|
||
|
|
{ 5, 84096, 0, 7 , 0, 260, -1 },
|
||
|
|
{ 6, 16352, 0, 7 , 368, 440, -1 },
|
||
|
|
// channel 8
|
||
|
|
{ 7, 114464, 0, 8 , 0, 384, -1 }
|
||
|
|
}
|
||
|
|
};
|
||
|
|
// XA file to load
|
||
|
|
static char * loadXA = "\\INTER8.XA;1";
|
||
|
|
// File informations : pos, size, name
|
||
|
|
CdlFILE XAPos = {0};
|
||
|
|
// CD filter
|
||
|
|
CdlFILTER filter;
|
||
|
|
// File position in m/s/f
|
||
|
|
CdlLOC loc;
|
||
|
|
|
||
|
|
void init(void)
|
||
|
|
{
|
||
|
|
ResetGraph(0); // Initialize drawing engine with a complete reset (0)
|
||
|
|
SetDefDispEnv(&disp[0], 0, 0 , SCREENXRES, SCREENYRES); // Set display area for both &disp[0] and &disp[1]
|
||
|
|
SetDefDispEnv(&disp[1], 0, SCREENYRES, SCREENXRES, SCREENYRES); // &disp[0] is on top of &disp[1]
|
||
|
|
SetDefDrawEnv(&draw[0], 0, SCREENYRES, SCREENXRES, SCREENYRES); // Set draw for both &draw[0] and &draw[1]
|
||
|
|
SetDefDrawEnv(&draw[1], 0, 0 , SCREENXRES, SCREENYRES); // &draw[0] is below &draw[1]
|
||
|
|
// Set video mode
|
||
|
|
if (VMODE){ SetVideoMode(MODE_PAL);}
|
||
|
|
SetDispMask(1); // Display on screen
|
||
|
|
setRGB0(&draw[0], 50, 50, 50); // set color for first draw area
|
||
|
|
setRGB0(&draw[1], 50, 50, 50); // set color for second draw area
|
||
|
|
draw[0].isbg = 1; // set mask for draw areas. 1 means repainting the area with the RGB color each frame
|
||
|
|
draw[1].isbg = 1;
|
||
|
|
PutDispEnv(&disp[db]); // set the disp and draw environnments
|
||
|
|
PutDrawEnv(&draw[db]);
|
||
|
|
FntLoad(960, 0); // Load font to vram at 960,0(+128)
|
||
|
|
FntOpen(MARGINX, MARGINY, SCREENXRES - MARGINX * 2, FONTSIZE, 0, 512 ); // FntOpen(x, y, width, height, black_bg, max. nbr. chars
|
||
|
|
}
|
||
|
|
void display(void)
|
||
|
|
{
|
||
|
|
DrawSync(0); // Wait for all drawing to terminate
|
||
|
|
VSync(0); // Wait for the next vertical blank
|
||
|
|
PutDispEnv(&disp[db]); // set alternate disp and draw environnments
|
||
|
|
PutDrawEnv(&draw[db]);
|
||
|
|
db = !db; // flip db value (0 or 1)
|
||
|
|
}
|
||
|
|
|
||
|
|
void spuSetup(SpuCommonAttr * spuSettings)
|
||
|
|
{
|
||
|
|
// Init Spu
|
||
|
|
SpuInit();
|
||
|
|
// Set master & CD volume to max
|
||
|
|
spuSettings->mask = (SPU_COMMON_MVOLL | SPU_COMMON_MVOLR | SPU_COMMON_CDVOLL | SPU_COMMON_CDVOLR | SPU_COMMON_CDMIX);
|
||
|
|
spuSettings->mvol.left = 0x6000;
|
||
|
|
spuSettings->mvol.right = 0x6000;
|
||
|
|
spuSettings->cd.volume.left = 0x6000;
|
||
|
|
spuSettings->cd.volume.right = 0x6000;
|
||
|
|
// Enable CD input ON
|
||
|
|
spuSettings->cd.mix = SPU_ON;
|
||
|
|
// Apply settings
|
||
|
|
SpuSetCommonAttr(spuSettings);
|
||
|
|
// Set transfer mode
|
||
|
|
SpuSetTransferMode(SPU_TRANSFER_BY_DMA);
|
||
|
|
}
|
||
|
|
|
||
|
|
void XAsetup()
|
||
|
|
{
|
||
|
|
u_char param[4];
|
||
|
|
// ORing the parameters we need to set ; drive speed, ADPCM play, Subheader filter, sector size
|
||
|
|
// If using CdlModeSpeed(Double speed), you need to load an XA file that has 8 channels.
|
||
|
|
// In single speed, a 4 channels XA is to be used.
|
||
|
|
param[0] = CdlModeSpeed|CdlModeRT|CdlModeSF|CdlModeSize1;
|
||
|
|
// Issue primitive command to CD-ROM system (Blocking-type)
|
||
|
|
// Set the parameters above
|
||
|
|
CdControlB(CdlSetmode, param, 0);
|
||
|
|
// Pause at current pos
|
||
|
|
CdControlF(CdlPause,0);
|
||
|
|
}
|
||
|
|
int main(void)
|
||
|
|
{
|
||
|
|
// Init display
|
||
|
|
init();
|
||
|
|
// Set SPU
|
||
|
|
spuSetup(&spuSettings);
|
||
|
|
// Init CD system
|
||
|
|
CdInit();
|
||
|
|
// Pad
|
||
|
|
PadInit(0);
|
||
|
|
// Load XA file from cd
|
||
|
|
// Find XA file pos
|
||
|
|
CdSearchFile( &XAPos, loadXA);
|
||
|
|
// Set cd head to start of file
|
||
|
|
soundBank.offset = CdPosToInt(&XAPos.pos);
|
||
|
|
// Set cd XA playback parameters and pause cd
|
||
|
|
XAsetup();
|
||
|
|
// Pad variables to avoid multifire
|
||
|
|
int pad, oldpad;
|
||
|
|
// Keep track of XA Sample currently playing
|
||
|
|
int sample = -1;
|
||
|
|
while (1) // infinite loop
|
||
|
|
{
|
||
|
|
// if sample is set
|
||
|
|
if (sample != -1 ){
|
||
|
|
// Begin XA file playback...
|
||
|
|
// if sample's cursor is 0
|
||
|
|
if (soundBank.samples[sample].cursor == 0){
|
||
|
|
// Convert sector number to CD position in min/second/frame and set CdlLOC accordingly.
|
||
|
|
CdIntToPos( soundBank.samples[sample].start + soundBank.offset , &loc);
|
||
|
|
// Send CDROM read command
|
||
|
|
CdControlF(CdlReadS, (u_char *)&loc);
|
||
|
|
// Set playing flag
|
||
|
|
}
|
||
|
|
// if sample's cursor is close to sample's end position, stop playback
|
||
|
|
if ((soundBank.samples[sample].cursor += XA_CDSPEED) >= soundBank.samples[sample].end - soundBank.samples[sample].start ){
|
||
|
|
CdControlF(CdlStop,0);
|
||
|
|
soundBank.samples[sample].cursor = -1;
|
||
|
|
sample = -1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Pad
|
||
|
|
// Use up, down, left, right, triangle, cross, circle, square to play various samples
|
||
|
|
// Read pad values
|
||
|
|
pad = PadRead(0);
|
||
|
|
|
||
|
|
// Left
|
||
|
|
if (pad & PADLleft && !(oldpad & PADLleft)){
|
||
|
|
// Set sample ID for playback
|
||
|
|
sample = 7;
|
||
|
|
// Change file/channel in the filter struct
|
||
|
|
filter.chan = soundBank.samples[sample].channel;
|
||
|
|
filter.file = soundBank.samples[sample].file;
|
||
|
|
// Set filter
|
||
|
|
CdControlF(CdlSetfilter, (u_char *)&filter);
|
||
|
|
// Reset sample's cursor
|
||
|
|
soundBank.samples[sample].cursor = 0;
|
||
|
|
// Store pad value for release
|
||
|
|
oldpad = pad;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (pad & PADLright && !(oldpad & PADLright)){
|
||
|
|
sample = 6;
|
||
|
|
filter.chan = soundBank.samples[sample].channel;
|
||
|
|
filter.file = soundBank.samples[sample].file;
|
||
|
|
// Set filter
|
||
|
|
CdControlF(CdlSetfilter, (u_char *)&filter);
|
||
|
|
soundBank.samples[sample].cursor = 0;
|
||
|
|
oldpad = pad;
|
||
|
|
}
|
||
|
|
if (pad & PADLup && !(oldpad & PADLup)){
|
||
|
|
sample = 5;
|
||
|
|
filter.chan = soundBank.samples[sample].channel;
|
||
|
|
filter.file = soundBank.samples[sample].file;
|
||
|
|
// Set filter
|
||
|
|
CdControlF(CdlSetfilter, (u_char *)&filter);
|
||
|
|
soundBank.samples[sample].cursor = 0;
|
||
|
|
oldpad = pad;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (pad & PADLdown && !(oldpad & PADLdown)){
|
||
|
|
sample = 4;
|
||
|
|
filter.chan = soundBank.samples[sample].channel;
|
||
|
|
filter.file = soundBank.samples[sample].file;
|
||
|
|
// Set filter
|
||
|
|
CdControlF(CdlSetfilter, (u_char *)&filter);
|
||
|
|
soundBank.samples[sample].cursor = 0;
|
||
|
|
oldpad = pad;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (pad & PADRleft && !(oldpad & PADRleft)){
|
||
|
|
sample = 3;
|
||
|
|
filter.chan = soundBank.samples[sample].channel;
|
||
|
|
filter.file = soundBank.samples[sample].file;
|
||
|
|
// Set filter
|
||
|
|
CdControlF(CdlSetfilter, (u_char *)&filter);
|
||
|
|
soundBank.samples[sample].cursor = 0;
|
||
|
|
oldpad = pad;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (pad & PADRright && !(oldpad & PADRright)){
|
||
|
|
sample = 2;
|
||
|
|
filter.chan = soundBank.samples[sample].channel;
|
||
|
|
filter.file = soundBank.samples[sample].file;
|
||
|
|
// Set filter
|
||
|
|
CdControlF(CdlSetfilter, (u_char *)&filter);
|
||
|
|
soundBank.samples[sample].cursor = 0;
|
||
|
|
oldpad = pad;
|
||
|
|
}
|
||
|
|
if (pad & PADRup && !(oldpad & PADRup)){
|
||
|
|
sample = 1;
|
||
|
|
filter.chan = soundBank.samples[sample].channel;
|
||
|
|
filter.file = soundBank.samples[sample].file;
|
||
|
|
// Set filter
|
||
|
|
CdControlF(CdlSetfilter, (u_char *)&filter);
|
||
|
|
soundBank.samples[sample].cursor = 0;
|
||
|
|
oldpad = pad;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (pad & PADRdown && !(oldpad & PADRdown)){
|
||
|
|
sample = 0;
|
||
|
|
filter.chan = soundBank.samples[sample].channel;
|
||
|
|
filter.file = soundBank.samples[sample].file;
|
||
|
|
// Set filter
|
||
|
|
CdControlF(CdlSetfilter, (u_char *)&filter);
|
||
|
|
soundBank.samples[sample].cursor = 0;
|
||
|
|
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 XA ! %d\n", VSync(-1));
|
||
|
|
FntPrint("Use the pad to play various samples.\n");
|
||
|
|
for (int i=0;i<soundBank.index;i++){
|
||
|
|
if (i == sample){
|
||
|
|
FntPrint(">");
|
||
|
|
}
|
||
|
|
FntPrint("%d: %d %d\n", i, soundBank.samples[i].start, soundBank.samples[i].end);
|
||
|
|
}
|
||
|
|
FntPrint("Cursor: %d\n", soundBank.samples[sample].cursor );
|
||
|
|
FntPrint("File offset: %d\n", soundBank.offset );
|
||
|
|
|
||
|
|
FntFlush(-1); // Draw print stream
|
||
|
|
display(); // Execute display()
|
||
|
|
}
|
||
|
|
return 0;
|
||
|
|
}
|