2013-01-24 19:14:40 +01:00
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/*
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* Copyright (C) 2003-2013 The Music Player Daemon Project
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* http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (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,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU 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 along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef MPD_INPUT_STREAM_HXX
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#define MPD_INPUT_STREAM_HXX
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#include "input_stream.h"
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#include "check.h"
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2013-01-27 17:20:50 +01:00
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#include "thread/Mutex.hxx"
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#include "thread/Cond.hxx"
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2013-01-24 19:14:40 +01:00
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#include "gcc.h"
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2013-01-28 23:41:45 +01:00
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#include <string>
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2013-01-24 19:14:40 +01:00
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2013-01-28 20:32:23 +01:00
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#include <assert.h>
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2013-01-24 19:14:40 +01:00
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struct input_stream {
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/**
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* the plugin which implements this input stream
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*/
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2013-01-28 23:35:01 +01:00
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const struct input_plugin &plugin;
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2013-01-24 19:14:40 +01:00
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/**
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2013-01-28 23:41:45 +01:00
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* The absolute URI which was used to open this stream.
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2013-01-24 19:14:40 +01:00
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*/
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2013-01-28 23:41:45 +01:00
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std::string uri;
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2013-01-24 19:14:40 +01:00
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/**
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* A mutex that protects the mutable attributes of this object
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* and its implementation. It must be locked before calling
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* any of the public methods.
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*
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* This object is allocated by the client, and the client is
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* responsible for freeing it.
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*/
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2013-01-28 23:35:01 +01:00
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Mutex &mutex;
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2013-01-24 19:14:40 +01:00
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/**
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* A cond that gets signalled when the state of this object
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* changes from the I/O thread. The client of this object may
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* wait on it. Optional, may be NULL.
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*
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* This object is allocated by the client, and the client is
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* responsible for freeing it.
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*/
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2013-01-28 23:35:01 +01:00
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Cond &cond;
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2013-01-24 19:14:40 +01:00
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/**
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* indicates whether the stream is ready for reading and
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* whether the other attributes in this struct are valid
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*/
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bool ready;
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/**
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* if true, then the stream is fully seekable
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*/
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bool seekable;
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/**
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* the size of the resource, or -1 if unknown
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*/
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goffset size;
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/**
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* the current offset within the stream
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*/
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goffset offset;
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/**
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2013-01-28 23:41:45 +01:00
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* the MIME content type of the resource, or empty if unknown.
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2013-01-24 19:14:40 +01:00
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*/
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2013-01-28 23:41:45 +01:00
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std::string mime;
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input_stream(const input_plugin &_plugin,
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const char *_uri, Mutex &_mutex, Cond &_cond)
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:plugin(_plugin), uri(_uri),
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mutex(_mutex), cond(_cond),
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ready(false), seekable(false),
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size(-1), offset(0) {
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assert(_uri != NULL);
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}
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};
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gcc_nonnull(1)
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static inline void
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input_stream_lock(struct input_stream *is)
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{
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is->mutex.lock();
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}
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gcc_nonnull(1)
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static inline void
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input_stream_unlock(struct input_stream *is)
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{
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is->mutex.unlock();
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2013-01-24 19:14:40 +01:00
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}
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#endif
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