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OSS emul in ALSA: no full duplex support?


Under OSS, if I want to open a sound device (/dev/dsp) for both capture and playback at the same time (full duplex), I can specify O_RDWR mode in the open call mode parameter. Under ALSA/OSS emulation, I can only use O_WRONLY (playback) for mode. Can someone please tell me why is it happening and how I can work around this?



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