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Saotome, do you have a better idea what the arguments of sceAudioInputInit do? We already know the following for sure: int sceAudioInputInit(short arg0, short mic_vol, short arg2); - where mic_vol is simply a signed short representing input volume. - arg0 produces weird results. In y...

Hi,

I'm contributing the audio input library I've created for the PSP Memo Recorder program I've created. It can be found in this post.

lteixeira

Hi, please check this thread, where I am posting new versions. The latest version already features 60 seconds max recording duration (file recording under way) and you can also control mic gain through the up and down arrows.

lteixeira

Ok wazowski, the callback definition which is in pspaudiolib I also used for the audio input (the best thing to do afterwards is to SVN commit this new code to PSPSDK). The definition typedef int (* pspAudioThreadfunc_t)(int args, void *argp); isn't used anywhere in p...

The most adequate is to use sceAudioInput in a thread where a callback from your application is invoked, in a similiar way to what is implemented in pspaudiolib. The only major difference is that instead of writing to a buffer you are reading from it. By frame Saotome means each frame of the two fra...

Hi, I'm posting PSP Memo Recorder v0.5, which is a sample program showing usage of the audio input syscalls. With this program you can record (in RAM) 5 seconds of audio and play it back afterwards. It requires the PSP remote and a headset such as the one used for the SOCOM game. PC to PSP headset a...

There is a difference in behaviour between sceAudioInput() and sceAudioInputBlocking(). The first one returns immediately (probably returns before the buffer is entirely filled). The second takes some extra time to return, causing noise to be heard (I have a loop between input and output), most like...

Ok, now it works. I had to change a few things. I was looking up the syscall pointers using kernel mode code such as sceKernelFindModuleByName(). Now I'm declaring the functions using extern as you said, which makes it a lot simpler :) I didn't notice these where specified in audio.S. Now I can run ...

Saotome, are you doing anything else besides initializing the sound input with sceAudioInputInit() (NID = 0x7DE61688) and calling sceAudioInput() (NID = 0x6D4BEC68) to filll the buffer. I'm using 1024 for the buffer size and 44100 as sample rate. I'm calling the function from within a dedicated thre...

Moreover I managed to inject some signal and I see a perfectly nice waveform very similar to the picture I see in my oscilloscope :). The second argument of sceAudioInputInit clearly seems to be the microphone gain level. But increasing it's value above 0x20 doesn't have any effect on the amplitude ...

Saotome, I tried your program using the remote, and whenever I put and remove the headphones jack there is reaction in the graph so I believe its working. Try using the remote because the 3.5 mm jack in the psp body doesn't have the microphone pins (the connector is a standard 3 pin one). Instead th...

Hi, upon tying to play with the audio input syscalls, so far I've been able to obtain the following: calling sceAudioInputInit supposing the following prototype: int sceAudioInputInit(int samplecount, int format); it returns 0. Next, I call sceAudioInputBlocking from a dedicated thread. The prototyp...

Relative to the microphone, the Socom headset shows pretty good evidence that the analog microphone input is the 4th ring in the stereo jack, so it should be quite easy to adapt a regular pc headset to this kind of jack. Now what is the most important is to figure out the parameters of the audio inp...

Hi, Is there any work done so far in extending the existing libraries to include the sceAudioInput, sceAudioGetInputLength, sceAudioInputBlocking and sceAudioInputInit system calls? The existing versions of the libraries don't seem to cover these yet.. Implementing the binding to these system calls ...