From: Stefan Schoenleitner <dev.c0debabe@gmail.com>
To: Raymond Yau <superquad.vortex2@gmail.com>
Cc: ALSA Development Mailing List <alsa-devel@alsa-project.org>
Subject: Re: "Resource temporarily unavailable" while reading although poll returns POLLIN event
Date: Sat, 24 Apr 2010 16:38:21 +0200 [thread overview]
Message-ID: <4BD3025D.1060207@gmail.com> (raw)
In-Reply-To: <k2i4f3252891004231832kcd722592hac37a667da424742@mail.gmail.com>
Raymond Yau wrote:
>>
>>
> Is it possible to post the output of your program when using your sound card
> "hw" since your program failed with XRUN (broken pipe) on my two sound cards
> ?
Sure, no problem.
However, I had to change 2 settings to get it working on my soundcard:
* change period size from 160 to 320, as my soundcard does not support a
period size of 160 frames
* change buffer size from 2 periods (1280 bytes) to 1 period (640
bytes), as my soundcard only supports a buffersize being equal to one period
After that the program works fine and runs forever (see below).
I'm looking forward to test it on my embedded target as well (with the
original settings).
If required I can post the output of that as well.
cheers,
stefan
-------------------------------------------------------------------------------
$ ./duplex hw
could not sched_setscheduler: Operation not permitted
PCM format is signed, linear, LE with 16 bits
PCM rate 8000 - 48000 Hz
PCM period size: 192 - 16384
PCM buffer size: 640 - 640
calculated buffer size: 640
avail min: 320
avail min after setup: 320
start threshold: 320 frames
stop threshold: 640 frames
PCM format is signed, linear, LE with 16 bits
PCM rate 4000 - 96000 Hz
PCM period size: 32 - 32768
PCM buffer size: 320 - 32640
calculated buffer size: 640
avail min: 320
avail min after setup: 320
start threshold: 320 frames
stop threshold: 640 frames
capture fds: 1, playback fds: 1
capture poll fd: 4, playback poll fd: 5
capture struct: fd: 4, events: POLLIN POLLERR , revents: 0
playback struct: fd: 5, events: POLLOUT POLLERR , revents: 0
capture avail min: 320
playback avail min: 320
snd_pcm_avail_update(capture): 0
demangled poll: on capture device
snd_pcm_avail_update(playback): 640
demangled poll: POLLOUT on playback device
wrote 320 frames
snd_pcm_avail_update(capture): 0
demangled poll: on capture device
snd_pcm_avail_update(playback): 320
demangled poll: POLLOUT on playback device
wrote 320 frames
snd_pcm_avail_update(capture): 320
demangled poll: POLLIN on capture device
read 320 frames
hexdump(): 640 bytes
0000 fe ff fe ff fe ff fe ff ff ff fe ff fe ff ff ff
0010 fe ff ff ff ff ff ff ff fe ff fe ff fe ff ff ff
0020 ff ff fe ff fe ff ff ff ff ff ff ff ff ff ff ff
0030 ff ff fe ff fe ff ff ff ff ff fe ff ff ff fe ff
0040 fe ff fe ff fe ff ff ff ff ff fe ff fe ff ff ff
0050 ff ff ff ff fe ff fe ff fe ff ff ff ff ff fe ff
0060 fe ff ff ff ff ff fe ff fe ff ff ff ff ff fe ff
0070 ff ff fe ff fe ff ff ff fe ff fe ff ff ff fe ff
0080 fe ff ff ff ff ff ff ff fe ff fe ff fe ff ff ff
0090 ff ff fe ff ff ff ff ff fe ff fe ff ff ff fe ff
00a0 ff ff ff ff fe ff fe ff ff ff fe ff fe ff ff ff
00b0 ff ff fe ff fe ff ff ff ff ff ff ff ff ff ff ff
00c0 ff ff ff ff ff ff ff ff ff ff ff ff ff ff fe ff
00d0 ff ff ff ff fe ff fe ff fe ff ff ff ff ff fe ff
00e0 fe ff fe ff ff ff ff ff fe ff fe ff ff ff fe ff
00f0 ff ff ff ff ff ff ff ff ff ff fe ff ff ff ff ff
0100 fe ff fe ff fe ff fe ff fe ff ff ff ff ff fe ff
0110 ff ff ff ff fe ff fe ff ff ff ff ff fe ff fe ff
0120 ff ff ff ff fe ff fe ff ff ff ff ff fe ff fe ff
0130 fe ff ff ff fe ff ff ff fe ff fe ff fe ff fe ff
0140 ff ff fe ff fe ff ff ff ff ff fe ff fe ff ff ff
0150 fe ff fe ff fe ff fe ff ff ff fe ff ff ff ff ff
0160 fe ff fe ff ff ff fe ff fe ff ff ff ff ff fe ff
0170 ff ff ff ff ff ff ff ff fe ff ff ff ff ff fe ff
0180 fe ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
0190 ff ff fe ff fe ff ff ff ff ff ff ff ff ff ff ff
01a0 ff ff ff ff fe ff fe ff fe ff ff ff ff ff fe ff
01b0 fe ff fe ff ff ff fe ff fe ff ff ff ff ff ff ff
01c0 ff ff ff ff ff ff ff ff ff ff ff ff fe ff fe ff
01d0 fe ff fe ff fe ff ff ff ff ff fe ff fe ff fe ff
01e0 fe ff ff ff ff ff ff ff fe ff fe ff ff ff ff ff
01f0 fe ff fe ff ff ff ff ff ff ff ff ff ff ff fe ff
0200 fe ff ff ff ff ff ff ff ff ff ff ff ff ff fe ff
0210 ff ff ff ff fe ff fe ff ff ff ff ff ff ff ff ff
0220 ff ff fe ff fe ff ff ff ff ff ff ff fe ff ff ff
0230 ff ff ff ff fe ff ff ff ff ff ff ff ff ff ff ff
0240 ff ff ff ff ff ff ff ff ff ff fe ff fe ff ff ff
0250 ff ff fe ff ff ff ff ff ff ff ff ff ff ff fe ff
0260 fe ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
0270 fe ff ff ff ff ff fe ff fe ff ff ff ff ff ff ff
snd_pcm_avail_update(playback): 320
demangled poll: on playback device
snd_pcm_avail_update(capture): 0
demangled poll: on capture device
snd_pcm_avail_update(playback): 320
demangled poll: POLLOUT on playback device
wrote 320 frames
snd_pcm_avail_update(capture): 320
demangled poll: POLLIN on capture device
read 320 frames
hexdump(): 640 bytes
0000 ff ff ff ff fe ff ff ff ff ff ff ff ff ff ff ff
0010 fe ff fe ff ff ff ff ff fe ff ff ff ff ff ff ff
0020 ff ff ff ff fe ff ff ff ff ff fe ff ff ff ff ff
0030 fe ff fe ff ff ff fe ff fe ff ff ff ff ff fe ff
0040 fe ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
0050 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
0060 ff ff fe ff fe ff ff ff ff ff ff ff ff ff ff ff
0070 ff ff fe ff fe ff fe ff ff ff ff ff ff ff fe ff
0080 fe ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
0090 ff ff ff ff ff ff ff ff fe ff fe ff ff ff fe ff
00a0 ff ff fe ff fe ff ff ff ff ff ff ff ff ff fe ff
00b0 fe ff fe ff fe ff fe ff fe ff fe ff ff ff ff ff
00c0 ff ff ff ff ff ff fe ff ff ff ff ff ff ff fe ff
00d0 fe ff ff ff fe ff fe ff ff ff ff ff fe ff fe ff
00e0 fe ff ff ff fe ff fe ff ff ff ff ff ff ff ff ff
00f0 ff ff ff ff fe ff ff ff ff ff ff ff ff ff ff ff
0100 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
0110 ff ff ff ff fe ff ff ff ff ff ff ff ff ff fe ff
0120 ff ff ff ff fe ff ff ff ff ff fe ff fe ff ff ff
0130 ff ff ff ff ff ff ff ff ff ff fe ff fe ff ff ff
0140 fe ff ff ff ff ff fe ff ff ff ff ff fe ff fe ff
0150 fe ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
0160 ff ff ff ff ff ff fe ff fe ff fe ff ff ff ff ff
0170 ff ff ff ff ff ff ff ff ff ff ff ff fe ff fe ff
0180 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
0190 ff ff ff ff ff ff ff ff ff ff fe ff fe ff ff ff
01a0 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
01b0 ff ff ff ff ff ff ff ff fe ff fe ff ff ff ff ff
01c0 ff ff ff ff ff ff ff ff ff ff ff ff ff ff fe ff
01d0 ff ff ff ff ff ff ff ff fe ff ff ff ff ff ff ff
01e0 ff ff fe ff fe ff ff ff ff ff ff ff ff ff ff ff
01f0 ff ff ff ff ff ff fe ff fe ff fe ff fe ff fe ff
0200 fe ff fe ff fe ff ff ff fe ff ff ff ff ff fe ff
0210 fe ff ff ff ff ff ff ff ff ff ff ff fe ff fe ff
0220 ff ff ff ff ff ff ff ff ff ff fe ff ff ff ff ff
0230 ff ff ff ff ff ff ff ff ff ff ff ff fe ff fe ff
0240 fe ff ff ff ff ff ff ff ff ff ff ff ff ff fe ff
0250 fe ff fe ff ff ff ff ff ff ff ff ff ff ff ff ff
0260 fe ff ff ff ff ff ff ff fe ff ff ff ff ff ff ff
0270 ff ff ff ff fe ff ff ff ff ff ff ff ff ff ff ff
snd_pcm_avail_update(playback): 320
demangled poll: on playback device
snd_pcm_avail_update(capture): 0
demangled poll: on capture device
snd_pcm_avail_update(playback): 320
demangled poll: POLLOUT on playback device
wrote 320 frames
snd_pcm_avail_update(capture): 320
demangled poll: POLLIN on capture device
read 320 frames
hexdump(): 640 bytes
0000 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
0010 ff ff ff ff ff ff ff ff ff ff fe ff fe ff ff ff
0020 ff ff fe ff fe ff ff ff fe ff fe ff ff ff fe ff
0030 fe ff ff ff ff ff ff ff ff ff fe ff ff ff ff ff
0040 fe ff fe ff fe ff fe ff fe ff fe ff fe ff fe ff
0050 fe ff fe ff ff ff fe ff fe ff fe ff ff ff ff ff
0060 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
0070 ff ff ff ff fe ff fe ff ff ff ff ff fe ff fe ff
0080 ff ff ff ff ff ff ff ff ff ff ff ff ff ff fe ff
0090 fe ff ff ff fe ff fe ff ff ff fe ff ff ff ff ff
00a0 ff ff fe ff ff ff ff ff fe ff ff ff ff ff ff ff
00b0 ff ff ff ff fe ff fe ff fe ff ff ff fe ff fe ff
00c0 fe ff fe ff fe ff fe ff fe ff fe ff ff ff fe ff
00d0 fe ff fe ff ff ff fe ff fe ff fe ff fe ff ff ff
00e0 ff ff ff ff ff ff fe ff fe ff fe ff fe ff fe ff
00f0 ff ff fe ff fe ff ff ff ff ff ff ff ff ff ff ff
0100 fe ff fe ff fe ff fe ff fe ff fe ff fe ff fe ff
0110 fe ff ff ff fe ff fe ff ff ff ff ff fe ff fe ff
0120 fe ff fe ff fe ff ff ff ff ff ff ff fe ff fe ff
0130 fe ff fe ff ff ff ff ff ff ff fe ff fe ff fe ff
0140 ff ff ff ff fe ff fe ff fe ff fe ff fe ff ff ff
0150 fe ff fe ff ff ff ff ff ff ff fe ff fe ff fe ff
0160 fe ff fe ff fe ff ff ff ff ff ff ff ff ff ff ff
0170 ff ff ff ff ff ff ff ff fe ff ff ff ff ff ff ff
0180 fe ff fe ff ff ff ff ff fe ff ff ff fe ff fe ff
0190 fe ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
01a0 ff ff ff ff fe ff ff ff ff ff fe ff fe ff ff ff
01b0 ff ff ff ff ff ff ff ff ff ff ff ff fe ff fe ff
01c0 ff ff ff ff fe ff fe ff ff ff ff ff ff ff ff ff
01d0 ff ff fe ff fe ff ff ff ff ff ff ff ff ff ff ff
01e0 ff ff fe ff ff ff ff ff ff ff fe ff ff ff fe ff
01f0 fe ff ff ff ff ff fe ff fe ff ff ff fe ff fe ff
0200 ff ff ff ff ff ff ff ff ff ff fe ff fe ff fe ff
0210 fe ff fe ff fe ff ff ff ff ff fe ff fe ff ff ff
0220 ff ff ff ff ff ff ff ff ff ff fe ff fe ff fe ff
0230 ff ff ff ff ff ff ff ff ff ff ff ff fe ff fe ff
0240 fe ff fe ff fe ff ff ff fe ff fe ff fe ff fe ff
0250 fe ff ff ff ff ff ff ff ff ff ff ff ff ff fe ff
0260 fe ff ff ff fe ff fe ff fe ff fe ff fe ff fe ff
0270 ff ff ff ff fe ff fe ff fe ff fe ff ff ff ff ff
snd_pcm_avail_update(playback): 320
demangled poll: POLLOUT on playback device
wrote 320 frames
snd_pcm_avail_update(capture): 320
demangled poll: POLLIN on capture device
read 320 frames
hexdump(): 640 bytes
0000 ff ff fe ff ff ff ff ff ff ff ff ff fe ff fe ff
0010 ff ff ff ff ff ff ff ff fe ff fe ff fe ff fe ff
0020 fe ff fe ff fe ff fe ff ff ff ff ff ff ff ff ff
0030 ff ff ff ff ff ff ff ff ff ff ff ff ff ff fe ff
0040 ff ff ff ff fe ff fe ff ff ff fe ff ff ff fe ff
0050 fe ff ff ff ff ff fe ff ff ff ff ff ff ff ff ff
0060 fe ff fe ff fe ff ff ff ff ff ff ff fe ff ff ff
0070 ff ff ff ff fe ff fe ff fe ff ff ff ff ff fe ff
0080 fe ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
0090 fe ff fe ff ff ff ff ff ff ff ff ff ff ff ff ff
00a0 fe ff ff ff fe ff ff ff fe ff fe ff ff ff fe ff
00b0 fe ff ff ff ff ff ff ff fe ff fe ff ff ff ff ff
00c0 fe ff fe ff ff ff ff ff fe ff ff ff ff ff fe ff
00d0 ff ff ff ff fe ff ff ff ff ff ff ff ff ff ff ff
00e0 ff ff ff ff ff ff ff ff fe ff ff ff ff ff fe ff
00f0 fe ff ff ff fe ff fe ff ff ff ff ff fe ff fe ff
0100 ff ff ff ff fe ff fe ff ff ff ff ff ff ff fe ff
0110 fe ff fe ff ff ff ff ff ff ff ff ff fe ff fe ff
0120 ff ff ff ff fe ff fe ff fe ff ff ff ff ff fe ff
0130 fe ff fe ff ff ff fe ff ff ff ff ff fe ff fe ff
0140 fe ff fe ff ff ff ff ff ff ff ff ff ff ff fe ff
0150 fe ff ff ff ff ff ff ff fe ff fe ff fe ff fe ff
0160 ff ff ff ff ff ff ff ff fe ff fe ff ff ff ff ff
0170 fe ff fe ff ff ff ff ff ff ff fe ff fe ff fe ff
0180 ff ff ff ff ff ff fe ff fe ff ff ff fe ff fe ff
0190 fe ff fe ff fe ff ff ff fe ff fe ff fe ff fe ff
01a0 fe ff ff ff fe ff fe ff fe ff fe ff ff ff fe ff
01b0 ff ff fe ff fe ff fe ff ff ff ff ff fe ff ff ff
01c0 ff ff fe ff fe ff fe ff ff ff fe ff fe ff fe ff
01d0 fe ff ff ff fe ff fe ff ff ff fe ff fe ff fe ff
01e0 fe ff fe ff fe ff fe ff ff ff ff ff ff ff ff ff
01f0 ff ff ff ff ff ff fe ff fe ff ff ff ff ff fe ff
0200 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[...]
-------------------------------------------------------------------------------
next prev parent reply other threads:[~2010-04-24 14:38 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-21 11:28 "Resource temporarily unavailable" while reading although poll returns POLLIN event Stefan Schoenleitner
2010-04-21 16:15 ` Stefan Schoenleitner
2010-04-21 17:18 ` Jaroslav Kysela
2010-04-22 10:09 ` Stefan Schoenleitner
2010-04-23 4:10 ` Raymond Yau
2010-04-24 1:32 ` Raymond Yau
2010-04-24 14:38 ` Stefan Schoenleitner [this message]
2010-04-24 23:43 ` Raymond Yau
2010-04-26 7:52 ` Stefan Schoenleitner
2010-04-27 0:35 ` Raymond Yau
2010-04-26 1:46 ` Raymond Yau
2010-04-26 8:19 ` Stefan Schoenleitner
2010-04-26 11:10 ` Raymond Yau
2010-04-22 4:28 ` Raymond Yau
2010-04-22 10:49 ` Stefan Schoenleitner
2010-04-23 7:45 ` Raymond Yau
2010-04-23 11:16 ` Stefan Schoenleitner
2010-04-22 2:41 ` Raymond Yau
2010-04-22 10:15 ` Stefan Schoenleitner
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