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#ifndef fooiochannelhfoo
#define fooiochannelhfoo
/* $Id$ */
/***
This file is part of polypaudio.
polypaudio is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser 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 <sys/types.h>
#include <polyp/mainloop-api.h>
/* A wrapper around UNIX file descriptors for attaching them to the a
main event loop. Everytime new data may be read or be written to
the channel a callback function is called. It is safe to destroy
the calling iochannel object from the callback */
/* When pa_iochannel_is_readable() returns non-zero, the user has to
* call this function in a loop until it is no longer set or EOF
* reached. Otherwise strange things may happen when an EOF is
* reached. */
typedef struct pa_iochannel pa_iochannel;
/* Create a new IO channel for the specified file descriptors for
input resp. output. It is safe to pass the same file descriptor for
both parameters (in case of full-duplex channels). For a simplex
channel specify -1 for the other direction. */
pa_iochannel* pa_iochannel_new(pa_mainloop_api*m, int ifd, int ofd);
void pa_iochannel_free(pa_iochannel*io);
ssize_t pa_iochannel_write(pa_iochannel*io, const void*data, size_t l);
ssize_t pa_iochannel_read(pa_iochannel*io, void*data, size_t l);
int pa_iochannel_is_readable(pa_iochannel*io);
int pa_iochannel_is_writable(pa_iochannel*io);
int pa_iochannel_is_hungup(pa_iochannel*io);
/* Don't close the file descirptors when the io channel is freed. By
* default the file descriptors are closed. */
void pa_iochannel_set_noclose(pa_iochannel*io, int b);
/* Set the callback function that is called whenever data becomes available for read or write */
typedef void (*pa_iochannel_cb_t)(pa_iochannel*io, void *userdata);
void pa_iochannel_set_callback(pa_iochannel*io, pa_iochannel_cb_t callback, void *userdata);
/* In case the file descriptor is a socket, return a pretty-printed string in *s which describes the peer connected */
void pa_iochannel_socket_peer_to_string(pa_iochannel*io, char*s, size_t l);
/* Use setsockopt() to tune the recieve and send buffers of TCP sockets */
int pa_iochannel_socket_set_rcvbuf(pa_iochannel*io, size_t l);
int pa_iochannel_socket_set_sndbuf(pa_iochannel*io, size_t l);
pa_mainloop_api* pa_iochannel_get_mainloop_api(pa_iochannel *io);
#endif
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