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/* the Music Player Daemon (MPD)
* (c)2003-2006 by Warren Dukes (warren.dukes@gmail.com)
* This project's homepage is: http://www.musicpd.org
*
* 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, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef INPUT_PLUGIN_H
#define INPUT_PLUGIN_H
#include "../config.h"
#include "inputStream.h"
#include "decode.h"
#include "outputBuffer.h"
#include "tag.h"
/* valid values for streamTypes in the InputPlugin struct: */
#define INPUT_PLUGIN_STREAM_FILE 0x01
#define INPUT_PLUGIN_STREAM_URL 0x02
/* optional, set this to NULL if the InputPlugin doesn't have/need one
* this must return < 0 if there is an error and >= 0 otherwise */
typedef int (*InputPlugin_initFunc) ();
/* optional, set this to NULL if the InputPlugin doesn't have/need one */
typedef void (*InputPlugin_finishFunc) ();
/* boolean return value, returns 1 if the InputStream is decodable by
* the InputPlugin, 0 if not */
typedef unsigned int (*InputPlugin_tryDecodeFunc) (InputStream *);
/* this will be used to decode InputStreams, and is recommended for files
* and networked (HTTP) connections.
*
* returns -1 on error, 0 on success */
typedef int (*InputPlugin_streamDecodeFunc) (OutputBuffer *, DecoderControl *,
InputStream *);
/* use this if and only if your InputPlugin can only be passed a filename or
* handle as input, and will not allow callbacks to be set (like Ogg-Vorbis
* and FLAC libraries allow)
*
* returns -1 on error, 0 on success */
typedef int (*InputPlugin_fileDecodeFunc) (OutputBuffer *, DecoderControl *,
char *path);
/* file should be the full path! Returns NULL if a tag cannot be found
* or read */
typedef MpdTag *(*InputPlugin_tagDupFunc) (char *file);
typedef struct _InputPlugin {
char *name;
InputPlugin_initFunc initFunc;
InputPlugin_finishFunc finishFunc;
InputPlugin_tryDecodeFunc tryDecodeFunc;
InputPlugin_streamDecodeFunc streamDecodeFunc;
InputPlugin_fileDecodeFunc fileDecodeFunc;
InputPlugin_tagDupFunc tagDupFunc;
/* one or more of the INPUT_PLUGIN_STREAM_* values OR'd together */
unsigned char streamTypes;
/* last element in these arrays must always be a NULL: */
char **suffixes;
char **mimeTypes;
} InputPlugin;
/* individual functions to load/unload plugins */
void loadInputPlugin(InputPlugin * inputPlugin);
void unloadInputPlugin(InputPlugin * inputPlugin);
/* interface for using plugins */
InputPlugin *getInputPluginFromSuffix(char *suffix, unsigned int next);
InputPlugin *getInputPluginFromMimeType(char *mimeType, unsigned int next);
InputPlugin *getInputPluginFromName(char *name);
void printAllInputPluginSuffixes(FILE * fp);
/* this is where we "load" all the "plugins" ;-) */
void initInputPlugins(void);
/* this is where we "unload" all the "plugins" */
void finishInputPlugins(void);
#endif
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