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The Advanced Linux Sound Architecture (ALSA) - library
bd5389278c
In the normal mmap mode, the stream isn't started automatically even after the data >= start_threshold has been written. However, in the mmap-emulation mode, the stream is started because it uses snd_pcm_write_areas() internally. As a workaround for this inconsistency, start_threshold value is changed dynamically in sw_parmams and mmap_commit callbacks in mmap-emul plugin. Meanwhile, start_threshold for slave PCM is set to boundary so that only this plugin (or the one over it) can control the start of the stream. This will fix problems in some apps using pulse plugin in the mmap mode. Signed-off-by: Takashi Iwai <tiwai@suse.de> |
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