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54 lines
1.5 KiB
54 lines
1.5 KiB
/* SPDX-License-Identifier: GPL-2.0 OR MIT */ |
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/* |
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* Xen para-virtual sound device |
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* |
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* Copyright (C) 2016-2018 EPAM Systems Inc. |
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* |
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* Author: Oleksandr Andrushchenko <[email protected]> |
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*/ |
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#ifndef __XEN_SND_FRONT_H |
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#define __XEN_SND_FRONT_H |
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#include "xen_snd_front_cfg.h" |
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struct xen_snd_front_card_info; |
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struct xen_snd_front_evtchnl; |
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struct xen_snd_front_evtchnl_pair; |
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struct xen_front_pgdir_shbuf; |
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struct xensnd_query_hw_param; |
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struct xen_snd_front_info { |
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struct xenbus_device *xb_dev; |
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struct xen_snd_front_card_info *card_info; |
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int num_evt_pairs; |
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struct xen_snd_front_evtchnl_pair *evt_pairs; |
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struct xen_front_cfg_card cfg; |
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}; |
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int xen_snd_front_stream_query_hw_param(struct xen_snd_front_evtchnl *evtchnl, |
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struct xensnd_query_hw_param *hw_param_req, |
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struct xensnd_query_hw_param *hw_param_resp); |
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int xen_snd_front_stream_prepare(struct xen_snd_front_evtchnl *evtchnl, |
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struct xen_front_pgdir_shbuf *shbuf, |
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u8 format, unsigned int channels, |
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unsigned int rate, u32 buffer_sz, |
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u32 period_sz); |
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int xen_snd_front_stream_close(struct xen_snd_front_evtchnl *evtchnl); |
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int xen_snd_front_stream_write(struct xen_snd_front_evtchnl *evtchnl, |
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unsigned long pos, unsigned long count); |
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int xen_snd_front_stream_read(struct xen_snd_front_evtchnl *evtchnl, |
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unsigned long pos, unsigned long count); |
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int xen_snd_front_stream_trigger(struct xen_snd_front_evtchnl *evtchnl, |
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int type); |
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#endif /* __XEN_SND_FRONT_H */
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