Older versions of linux's API header sound/asound.h accidentally rely on
indirect declaration of struct timespec, which isn't reliable, so
include time.h before it to support older versions of sound/asound.h
properly
ssize_t is defined in <sys/types.h>, see
https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/sys_types.h.html
Add an include for it to avoid a compile error when building with musl:
../include/tinyalsa/plugin.h:184:5: error: expected specifier-qualifier-list before 'ssize_t'
184 | ssize_t (*read_event) (struct mixer_plugin *plugin,
| ^~~~~~~
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>
Update the pcm framework to support plugins. Resolve the pcm device node
to be either kernel device or virtual device and setup function pointers
accordingly. Implement framework functionality for pcm_plugin.c for ease
of plugin development. Plugin itself is compiled as shared object (.so)
and dynamically linked from pcm_plugin.c.
Signed-off-by: Bhalchandra Gajare <gajare@codeaurora.org>
Signed-off-by: Rohit kumar <rohitkr@codeaurora.org>
Rohit kumar