Open Sound System
OSS 4.x Programmer's Guide

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PCM_CAP_MMAP audio device capability

The device supports mmap


This capability will be reported if the device supports the mmap system call. Applications that need to use mmap must also check that the PCM_CAP_TRIGGER capability is supported too.

Audio device capabilities like PCM_CAP_MMAP can be checked using the SNDCTL_AUDIOINFO or SNDCTL_DSP_GETCAPS ioctl calls.

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