C/C++ Programming Help Thread

[Mr305]

im not using pspdebug altogether

#include <pspkernel.h>
#include <pspdisplay.h>
#include <pspgu.h>
#include <stdio.h>
#include <pspctrl.h>
#include <string.h>
#include <pspiofilemgr.h>
#include "blit.h"

am i missing something? :/

You cant proceed w/ using blit and USE_KERNEL_LIBS.

im afraid u might have to ditch status system totally or stop using Kmode only funcs.

[myschoo]

blit.c works with kernel mode... but then when i wanted to use stdio.h file functions, it didnt compile and my problems started -_-

[Auraomega]

im not using pspdebug altogether

#include <pspkernel.h>
#include <pspdisplay.h>
#include <pspgu.h>
#include <stdio.h>
#include <pspctrl.h>
#include <string.h>
#include <pspiofilemgr.h>
#include "blit.h"

am i missing something? :/

Have you tried

include# <pspsysmem.h>

?

This is the header that contains sceKernelMaxFreeMemSize, so it would only be logical to include that if its not working...

-Aura

[myschoo]

yeah i did it... same error... strange

[Archaemic]

-lpspuser

[myschoo]

nope

[Archaemic]

Weird. sceKernelMaxFreeMemSize is in pspuser, so that should have fixed it...

[Mr305]

Weird. sceKernelMaxFreeMemSize is in pspuser, so that should have fixed it...

Use_kernel_libs flag discards -lpspuser. (=_=)

[myschoo]

strange.... i will probably have to rewrite file system to use only sceIo functions :/

[MrChaos]

I'm trying to figure out how to make a varible stay 0 ONLY if no buttons are being pressed...I can't figure out how to do that..Can anyone help?

If I try, the varible will always be 0, so there's gotta be someway..

[Mr305]

I'm trying to figure out how to make a varible stay 0 ONLY if no buttons are being pressed...I can't figure out how to do that..Can anyone help?

If I try, the varible will always be 0, so there's gotta be someway..

Did u miss my post few pages back?

[Auraomega]

I'm trying to figure out how to make a varible stay 0 ONLY if no buttons are being pressed...I can't figure out how to do that..Can anyone help?

If I try, the varible will always be 0, so there's gotta be someway..

I've been using this in an app I've been working on, not sure if this is what you want though...

int button;         //global
SceCtrlData pad;    //another global, can be used here, or made local

void buttoncheck(SceSize args, void* argp)
{
     //sceCtrlData pad;                   //un-comment if using as a local
     while(1){
     sceCtrlReadBufferPositive(&pad, 1);
     if(pad.Buttons & 0xFFFF) button = 1;
     sceCtrlReadBufferNegatve(&pad, 1);   //only use if required
     if(pad.Buttons & 0xFFFF) button = 0; // ||   || ||  ||
     sceKernelDelayThread(10000);         //make sure other threads get processing time
             }
}

void buttoncheckinit(SceSize args, void* argp)
{
     SceUID buttonchect = sceKernelCreateThread("buttoncheck", buttoncheck, 0x30, 0x10000, 0, NULL);
     sceKernelStartThread(buttoncheckt, args, argp);
}

int main(SceSize args, void* argp)
{
    buttoncheckinit(args, argp);
    
    //rest of code here
}

-Aura

[myschoo]

code:

sprintf(buffer,"Hello");
printf("%s",buffer);
sprintf(buffer,"Hi");
printf("%s",buffer);

result:

Hello
Hillo


but i need:

Hello
Hi


does anyone know how to clear buffer? i tried free(buffer) but that just freezes my app

[Auraomega]

code:



result:

Hello
Hillo


but i need:

Hello
Hi


does anyone know how to clear buffer? i tried free(buffer) but that just freezes my app

I'm not sure, but putting

buffer = "";

may do the trick, I think you can also NULL it, but again, I'm not totally sure.

Alternatively, you could do...

sprintf(buffer,"Hello");
printf("%s",buffer);
sprintf(buffer,"Hi");
printf("%0.2s",buffer);

which will only give the first 2 letters, this probably will get tedious and if you're using variable length, then its not going to really be suitable, but I do know for a fact that works.

As for free(buffer) not working, thats freeing up the memory, when you then try and sprint, it has nowhere to actually store the value and causes a buffer overflow.

-Aura

[myschoo]

thx i will try it ;)

also tried to use memset and still same problem o_O

[Auraomega]

thx i will try it ;)

also tried to use memset and still same problem o_O

While I think about it, if you put

sprintf(buffer, "Hi\0");

it should also work, seeing as \0 is the NULL flag, and I'm pritty sure variables stop reading once they reach a NULL flag.

-Aura

[_dysfunctional]

sprintf(buffer,"Hello");
 printf("%s",buffer);
memset(buffer, 0, sizeof(buffer));
 sprintf(buffer,"Hi");
 printf("%s",buffer);

[hallo007]

or bzero(buffer , sizeof(buffer) );

[myschoo]

txh both of u.. it works

[pspballer07]

code:



result:

Hello
Hillo


but i need:

Hello
Hi


does anyone know how to clear buffer? i tried free(buffer) but that just freezes my app

u could've just done

strcpy(buffer,"Hello");
printf("%s",buffer);
strcpy(buffer,"Hi");
printf("%s",buffer);

[nataku92]

edit: my bad, read wrong >_>, sorry about that

[Auraomega]

That's exactly what he was doing originally... But it didn't work since "Hi" didn't completely replace the "Hello" before it.

If you actually bothered to read both peices of code properly you would notice that the original used sprintf, and that uses strcpy.

-Aura

[califrag]

u could've just done

strcpy(buffer,"Hello");
printf("%s",buffer);
strcpy(buffer,"Hi");
printf("%s",buffer);

or even simpler:

printf("%s\n", "Hello");
printf("%s", "Hi");

or

printf("Hello\n");
printf("Hi");

[Auraomega]

or even simpler:

printf("%s", "Hello");
printf("%s", "Hi");

printf("Hello");
printf("Hi");

would be even simplier, but I doubt anyone is going to want their program to just say
Hello
Hi
The string is going to have different values store in it no doubt, which makes both of the above useless.

-Aura

[myschoo]

^^^^^^^^^^^^^^
listen to him ;)

[Auraomega]

How would I go about streaming an mp3? The only good peice of source code I've found for playing music loads it directly to memory, and needless to say, an mp3 takes a big chunk of the PSPs RAM.

-Aura

[Mr305]

How would I go about streaming an mp3? The only good peice of source code I've found for playing music loads it directly to memory, and needless to say, an mp3 takes a big chunk of the PSPs RAM.

-Aura

Manually Keep filling libmad's stream decoding buffer as it exhausts.

-4m psp

[pspballer07]

How would I go about streaming an mp3? The only good peice of source code I've found for playing music loads it directly to memory, and needless to say, an mp3 takes a big chunk of the PSPs RAM.

-Aura

psp-programming.com has a tut for that

[MrChaos]

I've been using this in an app I've been working on, not sure if this is what you want though...

int button;         //global
SceCtrlData pad;    //another global, can be used here, or made local

void buttoncheck(SceSize args, void* argp)
{
     //sceCtrlData pad;                   //un-comment if using as a local
     while(1){
     sceCtrlReadBufferPositive(&pad, 1);
     if(pad.Buttons & 0xFFFF) button = 1;
     sceCtrlReadBufferNegatve(&pad, 1);   //only use if required
     if(pad.Buttons & 0xFFFF) button = 0; // ||   || ||  ||
     sceKernelDelayThread(10000);         //make sure other threads get processing time
             }
}

void buttoncheckinit(SceSize args, void* argp)
{
     SceUID buttonchect = sceKernelCreateThread("buttoncheck", buttoncheck, 0x30, 0x10000, 0, NULL);
     sceKernelStartThread(buttoncheckt, args, argp);
}

int main(SceSize args, void* argp)
{
    buttoncheckinit(args, argp);
    
    //rest of code here
}

-Aura

That may be what I need, but what would be the use for sceCtrlReadBufferNegative ?

[Auraomega]

That may be what I need, but what would be the use for sceCtrlReadBufferNegative ?

I wasn't sure if you wanted it so that it registers a 1 ONLY when a button is being pressed or not. If you want a 1 to register only when a button is pressed, then when nothing is pressed the negative kicks in, and allows the code under it to run. As I said, only use if you need it

psp-programming.com has a tut for that

I checked on there about 5 minutes before posting here, the only tutorial I could find was for loading it all into RAM, which isn't really suitable.

Manually Keep filling libmad's stream decoding buffer as it exhausts.

-4m psp

How would I go about doing that? Limiting how much is read should be easy, but updating everytime its running low, not sure how I should do that...

-Aura