output_plugin.h

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/*  output_plugin.h
 *  Copyright (C) 1999-2002 Andy Lo A Foe <andy@alsaplayer.org>
 *
 *  This file is part of AlsaPlayer.
 *
 *  AlsaPlayer 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 3 of the License, or
 *  (at your option) any later version.
 *
 *  AlsaPlayer 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/>.
 *
 *  $Id: output_plugin.h 1344 2010-11-07 20:38:05Z dominique_libre $
 *  
 */ 

#ifndef __output_plugin_h__
#define __output_plugin_h__

#define OUTPUT_PLUGIN_BASE_VERSION      0x1000
#define OUTPUT_PLUGIN_VERSION   (OUTPUT_PLUGIN_BASE_VERSION + 6)

typedef int output_version_type;
typedef int(*output_init_type)(void);
typedef int(*output_open_type)(const char *path);
typedef void(*output_close_type)(void);
typedef int(*output_write_type)(void *data, int byte_count);
typedef int(*output_start_callbacks_type)(void *data);
typedef int(*output_set_buffer_type)(int *frag_size, int *frag_count, int *channels);
typedef unsigned int(*output_set_sample_rate_type)(unsigned int rate);
typedef int(*output_get_queue_count_type)(void);
typedef int(*output_get_latency_type)(void);

typedef struct _output_plugin
{
        output_version_type version;

        const char *name;

        const char *author;

        output_init_type init;

        output_open_type open;

        output_close_type close;

        output_write_type write;

        output_start_callbacks_type start_callbacks;
        
        output_set_buffer_type set_buffer;
        
        output_set_sample_rate_type set_sample_rate;

        output_get_queue_count_type get_queue_count;
        
        output_get_latency_type get_latency;
} output_plugin;

typedef output_plugin*(*output_plugin_info_type)(void);

#endif