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/* compress_plugin.h
**
** Copyright (c) 2019, The Linux Foundation. All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above
** copyright notice, this list of conditions and the following
** disclaimer in the documentation and/or other materials provided
** with the distribution.
** * Neither the name of The Linux Foundation nor the names of its
** contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
** WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
** ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
** BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
** CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
** SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
** BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
** WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
** OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
** IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**/
#ifndef __COMPRESS_PLUGIN_H__
#define __COMPRESS_PLUGIN_H__
#include "sound/compress_params.h"
#include "sound/compress_offload.h"
#define COMPRESS_PLUGIN_OPEN_FN(name) \
int name##_open(struct compress_plugin **plugin, \
unsigned int card, \
unsigned int device, \
unsigned int flags)
#define COMPRESS_PLUGIN_OPEN_FN_PTR() \
int (*plugin_open_fn) (struct compress_plugin **plugin, \
unsigned int card, \
unsigned int device, \
unsigned int flags);
struct compress_plugin;
struct compress_plugin_ops {
void (*close) (struct compress_plugin *plugin);
int (*get_caps) (struct compress_plugin *plugin,
struct snd_compr_caps *caps);
int (*set_params) (struct compress_plugin *plugin,
struct snd_compr_params *params);
int (*avail) (struct compress_plugin *plugin,
struct snd_compr_avail *avail);
int (*tstamp) (struct compress_plugin *plugin,
struct snd_compr_tstamp *tstamp);
int (*write) (struct compress_plugin *plugin,
const void *buf, size_t size);
int (*read) (struct compress_plugin *plugin,
void *buf, size_t size);
int (*start) (struct compress_plugin *plugin);
int (*stop) (struct compress_plugin *plugin);
int (*pause) (struct compress_plugin *plugin);
int (*resume) (struct compress_plugin *plugin);
int (*drain) (struct compress_plugin *plugin);
int (*partial_drain) (struct compress_plugin *plugin);
int (*next_track) (struct compress_plugin *plugin);
int (*ioctl) (struct compress_plugin *plugin, int cmd, ...);
int (*poll) (struct compress_plugin *plugin,
struct pollfd *fds, nfds_t nfds, int timeout);
};
struct compress_plugin {
unsigned int card;
struct compress_plugin_ops *ops;
void *node;
int mode;
void *priv;
unsigned int state;
};
#endif /* end of __COMPRESS_PLUGIN_H__ */
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