Virtual PCM Test Driver Coming With Linux 6.5 To Help With Audio Testing & Fuzzing
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The "pcmtest" Virtual PCM Test driver emulates a generic PCM device and can be used for testing/fuzzing of user-space ALSA applications as well as stressing Linux's PCM middle layer. The hope is this driver can also be used for simulating hard-to-reproduce problems with PCM devices.
This virtual audio driver can simulate both the capture and playback processes, generate random or pattern-based capturing data, inject delays into playback/capturing processes, and/or inject errors during the PCM callbacks. This new driver should be helpful for Linux kernel sound subsystem developers and ALSA user-space software developers in fuzzing, bug fixing, and all-around making Linux audio better.
This new driver has been queued into the sound.git's for-next branch by maintainer Takashi Iwai ahead of the upcoming Linux 6.5 merge window.
Also exciting on the sound front with Linux 6.5 is MIDI 2.0 driver support.
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