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Mixer control such as "Playback channel map" can be registered by
multiple pcm device nodes and is distinguished by device in
snd_ctl_elem_id. Add support to get the control handle associated
with mixer ctl name and device number.
Also, introduce API to get the device number associated with specific
mixer_ctl handle.
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Include time.h before asound.h to avoid the following build failure on
musl that was already fixed a long time with
https://github.com/tinyalsa/tinyalsa/commit/c8333f8c7a4e4b9549abeef7530b2cd20a18e537
but reappeared on version 2.0.0:
In file included from ../src/pcm_hw.c:42:
/home/peko/autobuild/instance-1/output-1/host/i586-buildroot-linux-musl/sysroot/usr/include/sound/asound.h:444:18: error: field 'trigger_tstamp' has incomplete type
444 | struct timespec trigger_tstamp; /* time when stream was started/stopped/paused */
| ^~~~~~~~~~~~~~
Fixes:
- http://autobuild.buildroot.org/results/a75e23dc585bd071f4d65face5489ed6ac22edbe
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
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In mixer_get_ctl_by_name_and_index(), the post-fix decrement
means that the index will be decremented after the comparison, but
before the return, leading to an unsigned integer underflow.
This causes a crash on platforms with -fsanitize=integer enabled.
Fix this by avoiding decrementing index until after the return.
Change-Id: I25a17ced4185bdebd500285bd30b342b16b4ac12
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There are some drivers assigning wrong ranges of mixer control's values.
Let ALSA drivers to check whether values are in ranges.
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1. Add a missing field and a function
2. Disable the deprecated attribute in Android temporarily to
allow us to use "pcm_read/write" which are deprecated upstream
3. Remove an unused define and an include in mixer.h
4. Add mixer_ctl_event and copy the snd_ctl_event to mixer_ctl_event
5. Add pcm_ioctl function and mark as deprecated function
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https://android.googlesource.com/platform/external/tinyalsa/+/49a61374fc18a0f39da0d9c11cc9ccc3e9c1ec3f
commit 49a61374fc18a0f39da0d9c11cc9ccc3e9c1ec3f
author Yogesh Agrawal <yagrawal@nvidia.com>
tinyalsa: channel status set as per IEC958
Add support for modifying the IEC958 structure in a mixer_ctl.
Bug: 9428304
Bug: 22576112
Change-Id: I8982340da9403a8a9e36b389fc97e9c635a9f681
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For TLV based mixer controls, mixer_ctl_set/get_array
adds TLV headers in the API itself. Size check for count
need not include tlv header size addition. Remove it to
fix size check.
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Fix memory leak in mixer_wait_event(). Also, poll should be
unblocked after increasing event_cnt in mixer_plugin, otherwise
event_cnt can become negative during read_event. Fix the same.
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snd_ctl_event is needed by client to get details of event received.
Introduce mixer_read_event() with plugin support to support this.
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mixer_consume_event consumes subscribed events from the mixer
in order to allow monitoring of mixer control value changed.
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Update the mixer framework to support plugins. Add ability for physical
card to have either kernel registered mixer controls or plugin
registered mixer control or both. Split mixer controls into two groups,
one for kernel registered (hw_grp) and the other for plugin registered
(virtual_grp).
Signed-off-by: Rohit kumar <rohitkr@codeaurora.org>
Signed-off-by: Bhalchandra Gajare <gajare@codeaurora.org>
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Changed order of operations to preserve the precision during the division.
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Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
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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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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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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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New controls could appear during runtime, for example if a
new firmware is downloaded to a DSP. Since ALSA drivers are
not supposed to delete or renumber existing controls we can
assume that any new controls will be after any controls we
already know about. We can use this to enable extending our
current list of controls, which is more efficient than
closing the mixer session and recreating it.
Signed-off-by: Richard Fitzgerald <rf@opensource.wolfsonmicro.com>
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This function is used to get the number of mixer controls by a given name.
It was added for use with mixer_get_ctl_by_name_and_index so that client code
can expect the last valid index to pass.
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This function was added to make available a mixer control accessor
in a function that does not modify its value.
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Functions changed are:
- mixer_get_name
- mixer_get_num_ctls
- mixer_ctl_get_id
- mixer_ctl_get_name
- mixer_ctl_get_type
- mixer_ctl_get_type_string
- mixer_ctl_get_num_values
- mixer_ctl_get_num_enums
- mixer_ctl_get_enum_string
- mixer_ctl_get_percent
- mixer_ctl_get_value
- mixer_ctl_get_array
- mixer_ctl_get_range_min
- mixer_ctl_get_range_max
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If users want to use only pcm.c or mixer.c
they can. It's not necessary to include
tinyalsa/asoundlib.h because mixer.c doesn't
use pcm.h and pcm.c doesn't use mixer.h.
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into dawagner-defer-enum-inspection
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