#ifndef foopolyplibcontexthfoo
#define foopolyplibcontexthfoo

/* $Id$ */

/***
  This file is part of polypaudio.
 
  polypaudio 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.
 
  polypaudio 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 polypaudio; if not, write to the Free Software
  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  USA.
***/

#include "sample.h"
#include "polyplib-def.h"
#include "mainloop-api.h"
#include "cdecl.h"
#include "polyplib-operation.h"

/** \file
 * Connection contexts */

PA_C_DECL_BEGIN

/** The state of a connection context */
enum pa_context_state {
    PA_CONTEXT_UNCONNECTED,    /**< The context hasn't been connected yet */
    PA_CONTEXT_CONNECTING,     /**< A connection is being established */
    PA_CONTEXT_AUTHORIZING,    /**< The client is authorizing itself to the daemon */
    PA_CONTEXT_SETTING_NAME,   /**< The client is passing its application name to the daemon */
    PA_CONTEXT_READY,          /**< The connection is established, the context is ready to execute operations */
    PA_CONTEXT_FAILED,         /**< The connection failed or was disconnected */
    PA_CONTEXT_TERMINATED      /**< The connect was terminated cleanly */
};

/** \struct pa_context
 * A connection context to a daemon */
struct pa_context;

/** Instantiate a new connection context with an abstract mainloop API
 * and an application name */
struct pa_context *pa_context_new(struct pa_mainloop_api *mainloop, const char *name);

/** Decrease the reference counter of the context by one */
void pa_context_unref(struct pa_context *c);

/** Increase the reference counter of the context by one */
struct pa_context* pa_context_ref(struct pa_context *c);

/** Set a callback function that is called whenever the context status changes */
void pa_context_set_state_callback(struct pa_context *c, void (*cb)(struct pa_context *c, void *userdata), void *userdata);

/** Return the error number of the last failed operation */
int pa_context_errno(struct pa_context *c);

/** Return non-zero if some data is pending to be written to the connection */
int pa_context_is_pending(struct pa_context *c);

/** Return the current context status */
enum pa_context_state pa_context_get_state(struct pa_context *c);

/** Connect the context to the specified server. If server is NULL,
connect to the default server. This routine may but will not always
return synchronously on error. Use pa_context_set_state_callback() to
be notified when the connection is established */
int pa_context_connect(struct pa_context *c, const char *server);

/** Terminate the context connection immediately */
void pa_context_disconnect(struct pa_context *c);

/** Drain the context. If there is nothing to drain, the function returns NULL */
struct pa_operation* pa_context_drain(struct pa_context *c, void (*cb) (struct pa_context*c, void *userdata), void *userdata);

/** Tell the daemon to exit. No operation object is returned as the
 * connection is terminated when the daemon quits, thus this operation
 * would never complete. */
void pa_context_exit_daemon(struct pa_context *c);

PA_C_DECL_END

#endif