Hi again,
I just updated the entire installation, and the new cygwin.dll got installed.
The test program below, compiled with the new cygwin-1.5.25-11, under
Vista crashes immediately when waveInOpen is called.
If compiled with -mno-cygwin, runs fine under Vista and cygwin-1.5.25-11
Not tested under XP yet.
Ciao,
Giovanni
On Mon, Mar 10, 2008 at 1:48 PM, Giovanni Maruzzelli
<[EMAIL PROTECTED]> wrote:
> Hi Cygwin developers,
>
> I got a problem using waveInOpen under Vista:
>
> 1) As soon as waveInOpen is called, the cpu load becomes very high,
> 80% on a quad core.
> 2) To cause the high load it is not needed to use the wavein, just to open
> it.
> 3) Under XP, no problems.
> 4) If you compile under vista with -mno-cygwin and execute with a
> double click on it, no problem.
> 5) If you compile using cygwin, and execute it from bash, 80% load.
>
> See below a very simple test case.
>
> You can compile it without cygwin and then execute it with a double click:
> gcc -mno-cygwin -Wall waveinopen_vista.c -o waveinopen_vista -l winmm
>
> or you can compile it with cygwin and execute it from bash:
> gcc -Wall waveinopen_vista.c -o waveinopen_vista -l winmm
>
> =======================================
> #include <windows.h>
> #include <stdio.h>
> #include <mmsystem.h>
>
>
> /* Handle to the WAVE In Device */
> HWAVEIN WaveInHandle;
>
> int main(int argc , char ** argv)
> {
> MMRESULT err;
> WAVEFORMATEX waveFormat;
>
> /* Initialize the WAVEFORMATEX */
> waveFormat.wFormatTag = WAVE_FORMAT_PCM;
> waveFormat.nChannels = 2;
> waveFormat.nSamplesPerSec = 44100;
> waveFormat.wBitsPerSample = 16;
> waveFormat.nBlockAlign = waveFormat.nChannels *
> (waveFormat.wBitsPerSample/8);
> waveFormat.nAvgBytesPerSec = waveFormat.nSamplesPerSec *
> waveFormat.nBlockAlign;
> waveFormat.cbSize = 0;
>
>
> /* Open the default WAVE In Device */
>
> /* if you open it with or without a callback thread,
> the cpu load is the same */
> //err = waveInOpen(&WaveInHandle, WAVE_MAPPER, &waveFormat,
> // (DWORD)err, 0, CALLBACK_THREAD);
> err = waveInOpen(&WaveInHandle, WAVE_MAPPER, &waveFormat,
> 0, 0, CALLBACK_NULL);
>
> printf("\n\nciao!!!\n\n");
> Sleep(500000000);
> printf("\n\ngoodbye!!!\n\n");
>
> return 0;
> }
>
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