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interval.h: add missing header
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The ssize_t type requires the unistd.h header. This fixes build with musl
libc:
In file included from ../include/tinyalsa/limits.h:32:0,
from limits.c:1:
../include/tinyalsa/interval.h:38:2: error: unknown type name 'ssize_t'
ssize_t max;
^
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
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Debian debug package
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Fix to pass num_frames to pcm_writei
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pcm_writei expects size of data in frames, whereas currently size
is passed as number of bytes. So convert number of bytes to frames
for argument to pcm_writei.
Signed-off-by: Jaikrishna Nemallapudi <jaikrishnax.nemallapudi@intel.com>
Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
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tinymix: fix segfaults with set command
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The arguments passed after the set command are not handled properly,
leading to segfaults or inability to set controls
Example with control 0 which is Headset Volume on my NUC:
before fix
$ ./tinymix set 0
Segmentation fault
$ ./tinymix set 0 10
Segmentation fault
$ ./tinymix set 0 10 20
Error: 3 values given, but control only takes 2
After correction
$ ./tinymix set 0
no value(s) specified
$ ./tinymix set 0 10
$ ./tinymix set 0 10 10
$ ./tinymix set 0 10 10 10
Error: 3 values given, but control only takes 2
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
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Fix mixer_wait_event function comments
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The @return comment description incorrect.
Fix it.
Change-Id: I148a5ebf3e05eb4824beb4c8fa1032a38272d86d
Signed-off-by: Pankaj Bharadiya <pankaj.laxminarayan.bharadiya@intel.com>
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Tinyalsa: Add support to poll on alsa control
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ALSA controls support polling on the kcontrols, this is used in HD-A for
jack notifcation. In tinyalsa we can use this for notfication from sound
card for any events detected by DSP
Change-Id: I4193809bfcdb60f4dc11e1c2ad6a07b29cfa80e9
Signed-off-by: Hardik T Shah <hardik.t.shah@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Pankaj Bharadiya <pankaj.laxminarayan.bharadiya@intel.com>
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Tvl fix
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The TLV byte controls expect a TLV header as well. Check for TLV
access and add TLV header size before invoking mixer API.
Change-Id: I12ba129e5bbc0676e80eb920e85b3683decfe0db
Signed-off-by: Pawse, GuruprasadX <guruprasadx.pawse@intel.com>
Signed-off-by: Pankaj Bharadiya <pankaj.laxminarayan.bharadiya@intel.com>
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Tinyalsa doesn't expose an api to check TLV RW access
Add mixer_ctl_is_access_tlv_rw().
This api will get used by tinymix and audio HALs for checking TLV RW
access before managing the byte related mixer controls.
Change-Id: Ib5707fabf479de638e1c7abd4cd149e7637ff9c2
Signed-off-by: Pankaj Bharadiya <pankaj.laxminarayan.bharadiya@intel.com>
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pcm.h -- (over/under)run definition
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overrun is in capture and underrun is in playback.
Look:
'+' has data / '-' hasn't data
overrun (capture):
You should have
read until here
v
|+++++++|++ <- buffer over(run/flow)
underrun (playback):
You should have
written until here
v
|+++++++|-- <- buffer under(run/flow)
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This function parses a PCM name similar to the ALSA library.
This is done so that the differences between alsa-lib and tinyalsa
are a little more transparent to the user.
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The link function is necessary for time sychronization between multiple PCMs.
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Added an example of pcm_writei usage and an example of pcm_readi
usage. Both examples use a common file called 'audio.raw'.
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Added ignore patterns for files in the new 'examples' directory.
The file 'audio.raw' is generated by running pcm-writei.
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It was added because bionic didn't have a copy of the file in 2011.
But, it was finally added in 2013 and update since.
There is no longer a need for this file.
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