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/*
* Copyright 2005 Timo Hirvonen
*/
#ifndef _OUTPUT_H
#define _OUTPUT_H
#include <sf.h>
extern int soft_vol;
extern int soft_vol_l;
extern int soft_vol_r;
void op_load_plugins(void);
void op_exit_plugins(void);
/*
* select output plugin and open its mixer
*
* errors: OP_ERROR_{ERRNO, NO_PLUGIN}
*/
int op_select(const char *name);
int op_select_any(void);
/*
* open selected plugin
*
* errors: OP_ERROR_{}
*/
int op_open(sample_format_t sf);
/*
* drop pcm data
*
* errors: OP_ERROR_{ERRNO}
*/
int op_drop(void);
/*
* close plugin
*
* errors: OP_ERROR_{}
*/
int op_close(void);
/*
* returns bytes written or error
*
* errors: OP_ERROR_{ERRNO}
*/
int op_write(const char *buffer, int count);
/*
* errors: OP_ERROR_{}
*/
int op_pause(void);
int op_unpause(void);
/*
* returns space in output buffer in bytes or -1 if busy
*/
int op_buffer_space(void);
/*
* errors: OP_ERROR_{}
*/
int op_reset(void);
int op_set_volume(int left, int right);
int op_get_volume(int *left, int *right);
void op_set_soft_vol(int soft);
/*
* errors: OP_ERROR_{NO_PLUGIN, NOT_INITIALIZED, NOT_OPTION}
*/
int op_set_option(unsigned int id, const char *val);
int op_get_option(unsigned int id, char **val);
int op_for_each_option(void (*cb)(unsigned int id, const char *key));
char *op_get_error_msg(int rc, const char *arg);
void op_dump_plugins(void);
char *op_get_current(void);
#endif
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