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