C/C++ Programming Help Thread

Zitat:

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Zitat von Insert_Witty_Name

You're calling pspAudioInit() multiple times, remove the call in the thememenu() function.

Also if you want to use my wavloader library (even with MP3 too) don't call pspAudioInit() at all, as mikmod does this internally.

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Ok, i will test it when i remove the call in the thememenu() function. However, mikmod didn't do this internally, or maybe i don't know the proper functions from your mod? What files do i include and what are the functions if i want to use your mod? I have already used the wav loader though, i know how to work that. But i am not sure about the mp3 player one.

Yea, i removed it from thememenu, and now it's working. But if you press up or down once, the mp3 repeats itself, but that shouldn't be a problem. ;) Another question-how do you assign a variable to an mp3 in case you want for a specific mp3 file to play?

Super - You cannot, atleast not statically... Youd have to know the exact name of hte mp3. You can, however, make an array for all the mp3s to be played in, than search through there file names for the name you want:

Code:

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for(i=0;i<sizeof(mp3array);i+++)
  if(mp3array[i].filename == "somename.mp3") { break; }

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Note, you must be using C++ to compare 2 strings using the == operator.

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Zitat von SG57

Super - You cannot, atleast not statically... Youd have to know the exact name of hte mp3. You can, however, make an array for all the mp3s to be played in, than search through there file names for the name you want:

Code:

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for(i=0;i<sizeof(mp3array);i+++)
  if(mp3array[i].filename == "somename.mp3") { break; }

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Note, you must be using C++ to compare 2 strings using the == operator.

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No, that's not what i meant. Let me use images for an example:

Code:

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Image* Background;
Background = loadImage("./black.png");

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For that image, anytime i need to blit it, i can use the variable instead of having to repeat the whole location:

Code:

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blitAlphaImageToScreen(0, 0 , 480, 272, Background, 0, 0);

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For mp3's, is it possible to have something like this:

Code:

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Mp3* click;
click = MP3_Load("./click.mp3");

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Can i assign a specific variable for a certain mp3 file like i can with images?

hmm... nvm :|

It was a response to a post. I misread it -__-

superbatxs: Not with the code you are using no.

Why would you want more than one sound loop at once though?

Sorry to ask again, but I'm sure no one will ever read that post again; When you exit a game with the Home-button and you press (X) to confirm the game in the background still responds to that button if you have (like me) a main-loop that usually runs forever. So how do you pevent the program from responding to the buttons (or running the main loop) when you are in the exit-menu?

make your own exit ;)

The problem would remain that if someone exits using the home-button my program would send a command to the server.. :/

no it wouldnt , if you make your own exit you can disable it whenever you want

Do you mean making an own exit-screen for the Home-button or do you mean I should make my own exit-function and simply disable the Home-button? Because the last solution would suck and for the first solution i'd still prefer to have the original exit-screen... .

just delete the setupcallbacks etc
and
make an exit fucntion

if(pad.Button & PSP_CTRL_HOME) exitFunction();

Ok, that would work. Thank you. But I'd still prefer to have a working original exit-screen, so if anyone knows how to treat this issue, please tell me

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Zitat von Insert_Witty_Name

superbatxs: Not with the code you are using no.

Why would you want more than one sound loop at once though?

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What code can i use then?

You'd have to write some yourself for multiple MP3 playback at the same time.

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Zitat von Lukeson

Ok, that would work. Thank you. But I'd still prefer to have a working original exit-screen, so if anyone knows how to treat this issue, please tell me

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dunno know the code anymore , but do this
[code]
int checkCallBack()
{
"Exit Callback" --> check if that thread is started)

return true or false
}

int myfunction
{
//....
while(checkCallBack)
{
sceKerneldelayThread(1000 00); // 1/10 second
}
//.....
}

well i want to add version check(yes still)
i've got 2 options

1.read version check from flash0:\version.txt
-how safe is this? completly?
-can some search for "hex-name" of firmware 3.03 and 3.02, i can find it..

2.check file size; (example from xflash source)
-i know this is 100% safe if made correctly and with the right files checked

Code:

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        }
        if (oea == 1) {
                openingsize = 231756;
                topmenusize = 210836;
                systemsize = 84016;
                sysconfsize = 289096;
                systembgsize = 8352;
                updatesize = 13904;
        }

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-what "format" are those numbers, kilobyte?, byte?
-but what do i have to add more only some int?|
-and is this the complete check, because xflash source is realy big:o

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Zitat von Kwastie

well i want to add version check(yes still)
i've got 2 options

1.read version check from flash0:\version.txt
-how safe is this? completly?
-can some search for "hex-name" of firmware 3.03 and 3.02, i can find it..

2.check file size; (example from xflash source)
-i know this is 100% safe if made correctly and with the right files checked

Code:

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        }
        if (oea == 1) {
                openingsize = 231756;
                topmenusize = 210836;
                systemsize = 84016;
                sysconfsize = 289096;
                systembgsize = 8352;
                updatesize = 13904;
        }

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-what "format" are those numbers, kilobyte?, byte?
-but what do i have to add more only some int?|
-and is this the complete check, because xflash source is realy big:o

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better check the firmware version changer source ;)

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Zitat von Insert_Witty_Name

You'd have to write some yourself for multiple MP3 playback at the same time.

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No, i don't want to playback multiple at the same time. I just want to assign different variables for different mp3's. How do i assign a variable to an mp3?

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Zitat von hallo007

dunno know the code anymore , but do this
[code]
int checkCallBack()
{
"Exit Callback" --> check if that thread is started)

return true or false
}

int myfunction
{
//....
while(checkCallBack)
{
sceKerneldelayThread(1000 00); // 1/10 second
}
//.....
}

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I think the function for this should be sceKernelReferThreadStatu s but checking this every time on the main loop seems kind of expensive (you get so much information you don't really want) and would eventually slow down the program. I think I will use this for now but maybe somebody knows another way? Are there probably messages (events) you could catch?

alright, im trying to make it so that a variable, "gammal" is known In Every source file im using.
how would I do that? like

Code:

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extern int          gammal = 3;

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im trying to make it so that it is known in ever script, but gammal's # can be changed In one of them, gammal (or Gamma level) can still be read by all of the files, how would I do that and where would I put that? (the main file? or maybe the file that changes it?)

Zitat:

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Zitat von Kwastie

well i want to add version check(yes still)
i've got 2 options

1.read version check from flash0:\version.txt
-how safe is this? completly?
-can some search for "hex-name" of firmware 3.03 and 3.02, i can find it..

2.check file size; (example from xflash source)
-i know this is 100% safe if made correctly and with the right files checked

Code:

---

        }
        if (oea == 1) {
                openingsize = 231756;
                topmenusize = 210836;
                systemsize = 84016;
                sysconfsize = 289096;
                systembgsize = 8352;
                updatesize = 13904;
        }

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-what "format" are those numbers, kilobyte?, byte?
-but what do i have to add more only some int?|
-and is this the complete check, because xflash source is realy big:o

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You're barely ready for Lesson 5 at psp-programming.com. So I know you're not ready for the X-Flash source code.

Which Lib lets you play .wav?

I tried libmad, it has nothing but mp3 related...
No, I donot want to encode anything to mp3....

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Zitat von Mr305

Which Lib lets you play .wav?

I tried libmad, it has nothing but mp3 related...
No, I donot want to encode anything to mp3....

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svn checkout svn://svn.ps2dev.org/psp/trunk/mikmodlib
cd mikmodlib
make install

then download this:
http://insomniac.0x89.org/assets/files/Wavloader_01.zip

I had problems with wav at first, but it's almost the same as mp3. There is an example in the download if you want to learn the codes for it.

Oh... Shh...

Plays only mono wav?
Any stereo wav libs?

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Zitat von Mr305

Oh... Shh...

Plays only mono wav?
Any stereo wav libs?

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Not as far as i know. :( That is why i had to convert my stereo wav file to mp3 using a converter........which reduced the quality a lot.:Argh:

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Zitat von Lukeson

I think the function for this should be sceKernelReferThreadStatu s but checking this every time on the main loop seems kind of expensive (you get so much information you don't really want) and would eventually slow down the program. I think I will use this for now but maybe somebody knows another way? Are there probably messages (events) you could catch?

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load it as a thread , so you need to do it only ones
but dunno how to do then because if you do scekernelDelayThread(); it wont have effect on the orther thread
mayby with variabels

while(!exit)
{
}



the thread
while(1)
{
if(checkcallback)
{
exit = TRUE;
}
if(!checkcallback)
{
exit = FALSE;
}
}

How do you load jpg's? What lib do i need, and what are the codes? Same question for ogg. Thanks.

Download jpeg lib from the ps2dev.org svn. And for ogg, go to insomniac.0x89.org and download his ogg player.

I am going to post a link on this thread 22 March sometime after 12pm for downloading the graphics class that I have put together with help from Bronx for sorting out endain issues and making sure PNG is supported on PSP, Mac PowerPC & Intel

This is cross platform graphics class based on SDL for when not compiled for PSP

This was mainly developed so that I can work on easyChoice with great eas and the project easyChoice is allready well under way.

designed for Xcode

files will be ziped up so Window users can also use it, it is based on SDL so shouln't be any issues compiling for Windows

Also if you are reading this Bronx, i will email you it before I post it to save you time looking for the link in this thread

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Zitat von hallo007

load it as a thread , so you need to do it only ones
but dunno how to do then because if you do scekernelDelayThread(); it wont have effect on the orther thread
mayby with variabels

while(!exit)
{
}



the thread
while(1)
{
if(checkcallback)
{
exit = TRUE;
}
if(!checkcallback)
{
exit = FALSE;
}
}

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I don't think that there's a big difference between having to check the status everytime in the main loop and checking the status permanently in an own loop.

uh??, you dont understand me

different threads mean
that if running a loop in the one thread , it wont have effect on the other thread
so you need to just make one loop anyway

windows is to process as PSP is to thread.

I know what a thread is, I understand you that way that you would start a thread which checks whether or not the exit-thread is running, but I don't see why this much better than checking the status of the exit-thread in the main-loop. It wouldn't 'block' the main loop until the checking is over but either way permanently checking the exit-threads-status seems much to exagerated for me. I mean, isn't there an event you could react on? Or, thinking your idea of rebinding the Home-button a bit further, couldn't you start a function (when pressing the Home-button) that sets "exit=true" and then calls what the Home-button usually would call?

yes unloed and eload the setupcallbacks

This is for those who don't know what a thread is and what it is all about.

A thread in computer science is short for a thread of execution. Threads are a way for a program to fork (or split) itself into two or more simultaneously (or pseudo-simultaneously) running tasks. Threads and processes differ from one operating system to another, but in general, the way that a thread is created and shares its resources is different from the way a process does.

Thread and fiber issues
Typically fibers are implemented entirely in userspace. As a result, context switching between fibers in a process does not require any interaction with the kernel at all and is therefore extremely efficient: a context switch can be performed by locally saving the CPU registers used by the currently executing fiber and loading the registers required by the fiber to be executed. Since scheduling occurs in userspace, the scheduling policy can be more easily tailored to the requirements of the program's workload.

XSDK Cross Software Development Kit

The Xgraphics part of XSDK is readyy to be used.
Xgraphics 1st Edition

2nd Edition will have DAS support, it didn't make it into the 1st Edition

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Zitat von Lukeson

I know what a thread is, I understand you that way that you would start a thread which checks whether or not the exit-thread is running, but I don't see why this much better than checking the status of the exit-thread in the main-loop. It wouldn't 'block' the main loop until the checking is over but either way permanently checking the exit-threads-status seems much to exagerated for me. I mean, isn't there an event you could react on? Or, thinking your idea of rebinding the Home-button a bit further, couldn't you start a function (when pressing the Home-button) that sets "exit=true" and then calls what the Home-button usually would call?

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I think what you're looking for is in sceKernelRegisterThreadEv entHandler(), although I can't seem to find any infomation on the event bits. But since apparently only the lowest 4 bits are useable, you should be able to get it with a little trial and error.

pspDebugScreenSetXY(x,y);

whats the maximum for x and what is the max for y?
-= Double Post =-
i just found out , that for x its 68 , what's for y? (something behind 38 , not sure)

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Zitat von hallo007

pspDebugScreenSetXY(x,y);

whats the maximum for x and what is the max for y?
-= Double Post =-
i just found out , that for x its 68 , what's for y? (something behind 38 , not sure)

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I think it's 36 for y (correct me if i am wrong).

x and y are in character units. One character unit is 8 x 10 pixels.

PSP Screen = 480 x 272

thnx ;)

other question , trying to printf in center with variabels...

Code:

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void pspDebugScreenPrintfCenter(char *text , int cy, ...) __attribute__((format(printc,2,3)));
//printf in the center off the screen
void pspDebugScreenPrintfCenter(char *text , int cy, ...)
{

  pspDebugScreenSetXY(((68-strlen(text))/2),cy);
  pspDebugScreenPrintf(text , ...);
}

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is ofcourse not working
I am stuck at this

Code:

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pspDebugScreenPrintf(text , ...);

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