commit | b49414ea5da073042aab753a4fd9fd05fa5bb8d5 | [log] [tgz] |
---|---|---|
author | Caleb Connolly <caleb.connolly@linaro.org> | Tue Nov 02 18:56:21 2021 +0000 |
committer | Caleb Connolly <caleb.connolly@linaro.org> | Tue Nov 02 21:51:32 2021 +0000 |
tree | 6f7b782f0dfc64b5c5b0cf37c7983988015fb19d | |
parent | 9109c94f269102785c606bd6c211b52fbbcd822d [diff] |
mixer: fix index underflow when index=0 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
TinyALSA is a small library to interface with ALSA in the Linux kernel.
The aims are:
TinyALSA supports these build systems:
To build and install with Make, run the commands:
make sudo make install sudo ldconfig
TinyALSA is now available as a set of the following Debian packages from launchpad:
Package Name: | Description: |
---|---|
tinyalsa | Contains tinyplay, tinycap, tinymix and tinypcminfo |
libtinyalsa | Contains the shared library |
libtinyalsa-dev | Contains the static library and header files |
To install these packages, run the commands:
sudo apt-add-repository ppa:taylorcholberton/tinyalsa sudo apt-get update sudo apt-get install tinyalsa sudo apt-get install libtinyalsa-dev
Once installed, the man pages are available via:
man tinyplay man tinycap man tinymix man tinypcminfo man libtinyalsa-pcm man libtinyalsa-mixer
To test libtinyalsa, please follow the instructions,
Visit here to get more info to setup Bazel environment.
The test program does pcm_* operations on loopback devices. You have to insert loopback devices after your system boots up.
sudo modprobe snd-aloop sudo chmod 777 /dev/snd/*
bazel test //:tinyalsa_tests --test_output=all
The default playback device is hw:2,0 and the default capture device is hw:2,1. If your loopback devices are not hw:2,0 and hw:2,1, you can specify the loopback device.
bazel test //:tinyalsa_tests --test_output=all \ --copt=-DTEST_LOOPBACK_CARD=[loopback card] \ --copt=-DTEST_LOOPBACK_PLAYBACK_DEVICE=[loopback playback device] \ --copt=-DTEST_LOOPBACK_CAPTURE_DEVICE=[loopback capture device]
bazel coverage //:tinyalsa_tests --combined_report=lcov --test_output=all genhtml bazel-out/_coverage/_coverage_report.dat -o tinyalsa_tests_coverage