PortAudio makes no sound

TheSergon13 · 04-28-2010, 09:24 AM

Hi everybody,

I'm trying to use PortAudio.
I compiled it to use oss devices. But when trying to execute some test programs, I'm always having the same error. For example, executing the program patest_sine (that should reproduce a sine signal):

Code:

[root@arm-linux portaudio]# ./patest_sine
PortAudio Test: output sine wave. SR = 44100, BufSize = 64request IOCTL 1074024464
Expression 'ioctl( stream->playback->fd, SNDCTL_DSP_request IOCTL 20488 SETTRIGGER, &enableBits )' failed in 'src/hostapi/oss/pa_unix_oss.c', line: 1437

Expression 'PaOssStream_Prepare( stream )' failed in 'src/hostapi/oss/pa_unix_oss.c', line: 1592
Stream Completed: No Message

I though something was not good with my sound devices, and I executed pa_devs:

Code:

[root@arm-linux portaudio]# ./pa_devs
PortAudio version number = 1899
PortAudio version text = 'PortAudio V19-devel (built Apr 27 2010 19:09:27)'
Number of devices = 1
--------------------------------------- device #0
[ Default Input, Default Output ]
Name                        = /dev/dsp
Host API                    = OSS
Max inputs = 2, Max outputs = 2
Default low input latency   =    0.012
Default low output latency  =    0.012
Default high input latency  =    0.046
Default high output latency =    0.046
Default sample rate         = 44100.00
Supported standard sample rates
 for half-duplex 16 bit 2 channel input =
         8000.00,  9600.00, 11025.00, 12000.00,
        16000.00, 22050.00, 24000.00, 32000.00,
        44100.00, 48000.00, 88200.00, 96000.00,
        192000.00
Supported standard sample rates
 for half-duplex 16 bit 2 channel output =
         8000.00,  9600.00, 11025.00, 12000.00,
        16000.00, 22050.00, 24000.00, 32000.00,
        44100.00, 48000.00, 88200.00, 96000.00,
        192000.00
Supported standard sample rates
 for full-duplex 16 bit 2 channel input, 2 channel output =
         8000.00,  9600.00, 11025.00, 12000.00,
        16000.00, 22050.00, 24000.00, 32000.00,
        44100.00, 48000.00, 88200.00, 96000.00,
        192000.00
----------------------------------------------
[root@arm-linux portaudio]#

It seems like should work, but doesn't.
Does anybody know how to make PortAudio work?

Regards,
Sérgio Gonçalves