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/*
* Copyright 2008-2013 Various Authors
* Copyright 2004 Timo Hirvonen
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef CMUS_OP_H
#define CMUS_OP_H
#include "sf.h"
#include "channelmap.h"
#ifndef __GNUC__
#include <fcntl.h>
#endif
#define OP_ABI_VERSION 2
enum {
/* no error */
OP_ERROR_SUCCESS,
/* system error (error code in errno) */
OP_ERROR_ERRNO,
/* no such plugin */
OP_ERROR_NO_PLUGIN,
/* plugin not initialized */
OP_ERROR_NOT_INITIALIZED,
/* function not supported */
OP_ERROR_NOT_SUPPORTED,
/* mixer not open */
OP_ERROR_NOT_OPEN,
/* plugin does not support the sample format */
OP_ERROR_SAMPLE_FORMAT,
/* plugin does not have this option */
OP_ERROR_NOT_OPTION,
/* */
OP_ERROR_INTERNAL
};
struct output_plugin_ops {
int (*init)(void);
int (*exit)(void);
int (*open)(sample_format_t sf, const channel_position_t *channel_map);
int (*close)(void);
int (*drop)(void);
int (*write)(const char *buffer, int count);
int (*buffer_space)(void);
/* these can be NULL */
int (*pause)(void);
int (*unpause)(void);
};
#define OPT(prefix, name) { #name, prefix ## _set_ ## name, \
prefix ## _get_ ## name }
struct output_plugin_opt {
const char *name;
int (*set)(const char *val);
int (*get)(char **val);
};
/* symbols exported by plugin */
extern const struct output_plugin_ops op_pcm_ops;
extern const struct output_plugin_opt op_pcm_options[];
extern const int op_priority;
extern const unsigned op_abi_version;
#endif
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