83 lines
2.0 KiB
C
83 lines
2.0 KiB
C
/*
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* Copyright 2008-2013 Various Authors
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* Copyright 2004 Timo Hirvonen
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef CMUS_OP_H
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#define CMUS_OP_H
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#include "sf.h"
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#include "channelmap.h"
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#ifndef __GNUC__
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#include <fcntl.h>
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#endif
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#define OP_ABI_VERSION 3
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enum {
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/* no error */
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OP_ERROR_SUCCESS,
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/* system error (error code in errno) */
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OP_ERROR_ERRNO,
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/* no such plugin */
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OP_ERROR_NO_PLUGIN,
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/* plugin not initialized */
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OP_ERROR_NOT_INITIALIZED,
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/* function not supported */
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OP_ERROR_NOT_SUPPORTED,
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/* mixer not open */
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OP_ERROR_NOT_OPEN,
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/* plugin does not support the sample format */
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OP_ERROR_SAMPLE_FORMAT,
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/* plugin does not have this option */
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OP_ERROR_NOT_OPTION,
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/* */
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OP_ERROR_INTERNAL
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};
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struct output_plugin_ops {
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int (*init)(void);
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int (*exit)(void);
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int (*open)(sample_format_t sf, const channel_position_t *channel_map);
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int (*close)(void);
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int (*drop)(void);
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int (*write)(const char *buffer, int count);
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int (*buffer_space)(void);
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/* these can be NULL */
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int (*pause)(void);
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int (*unpause)(void);
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};
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#define OPT(prefix, name) { #name, prefix ## _set_ ## name, \
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prefix ## _get_ ## name }
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struct output_plugin_opt {
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const char *name;
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int (*set)(const char *val);
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int (*get)(char **val);
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};
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/* symbols exported by plugin */
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extern const struct output_plugin_ops op_pcm_ops;
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extern const struct output_plugin_opt op_pcm_options[];
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extern const int op_priority;
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extern const unsigned op_abi_version;
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#endif
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