/* the Music Player Daemon (MPD) * Copyright (C) 2003-2007 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_STREAM_H #define INPUT_STREAM_H #include <stddef.h> #include <stdbool.h> #include <sys/types.h> struct input_stream; struct input_plugin { bool (*open)(struct input_stream *is, const char *url); void (*close)(struct input_stream *is); int (*buffer)(struct input_stream *is); size_t (*read)(struct input_stream *is, void *ptr, size_t size); bool (*eof)(struct input_stream *is); bool (*seek)(struct input_stream *is, off_t offset, int whence); }; struct input_stream { const struct input_plugin *plugin; bool seekable; bool ready; int error; off_t size, offset; char *mime; void *data; char *meta_name; char *meta_title; }; void input_stream_global_init(void); void input_stream_global_finish(void); /* if an error occurs for these 3 functions, then -1 is returned and errno for the input stream is set */ bool input_stream_open(struct input_stream *is, char *url); bool input_stream_seek(struct input_stream *is, off_t offset, int whence); void input_stream_close(struct input_stream *is); bool input_stream_eof(struct input_stream *is); /* return value: -1 is error, 1 inidicates stuff was buffered, 0 means nothing was buffered */ int input_stream_buffer(struct input_stream *is); size_t input_stream_read(struct input_stream *is, void *ptr, size_t size); #endif