nolibgs_hello_worlds/hello_cdda/hello_cdda.c
2021-07-25 10:15:43 +02:00

113 lines
4.3 KiB
C

// CDDA track playing example
// based on Lameguy64's tutorial : http://lameguy64.net/svn/pstutorials/chapter1/1-display.html
#include <sys/types.h>
#include <stdio.h>
#include <libgte.h>
#include <libetc.h>
#include <libgpu.h>
// CD library
#include <libds.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 * 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
// SPU attributes
SpuCommonAttr spuSettings;
// CD tracks
int playing = -1;
int tracks[] = {2, 0}; // Track to play , 1 is data, 2 is beach.wav, 3 is funk.wav. See isoconfig.xml
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, SCREENYRES - MARGINY - FONTSIZE, SCREENXRES - MARGINX * 2, FONTSIZE, 0, 280 ); // 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)
}
int main(void)
{
init(); // init() display
// Init extended CD system
DsInit();
// 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 );
// Master volume should be in range 0x0000 - 0x3fff
spuSettings.mvol.left = 0x3fff;
spuSettings.mvol.right = 0x3fff;
// Cd volume should be in range 0x0000 - 0x7fff
spuSettings.cd.volume.left = 0x7fff;
spuSettings.cd.volume.right = 0x7fff;
// Enable CD input ON
spuSettings.cd.mix = SPU_ON;
// Apply settings
SpuSetCommonAttr(&spuSettings);
// Set transfer mode
SpuSetTransferMode(SPU_TRANSFER_BY_DMA);
int count = 0;
int flip = 0;
while (1) // infinite loop
{
if ( count == 0){
DsPlay(2, tracks, 0);
}
count ++;
// Afer 5 seconds
if ( count == 300 ){
// Stop playback
DsPlay(0, tracks, 0);
}
// Wait one second
if ( count == 360 ){
// Flip value
flip = !flip;
// Switch track (can be 2 or 3)
tracks[0] = 2 + flip;
// Reset counter
count = 0;
}
FntPrint("Hello CDDA !\n"); // Send string to print stream
FntPrint("Playback status: %d", DsPlay(3, tracks, 0)); // Send string to print stream
FntFlush(-1); // Draw printe stream
display(); // Execute display()
}
return 0;
}