/*
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* Copyright (c) 2010-2019 Belledonne Communications SARL.
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*
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* This file is part of oRTP.
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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 3 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
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* \file sessionset.h
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* \brief Sending and receiving multiple streams together with only one thread.
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*
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**/
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#ifndef SESSIONSET_H
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#define SESSIONSET_H
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#include <ortp/rtpsession.h>
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#ifdef __cplusplus
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extern "C"{
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#endif
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#if !defined(_WIN32) && !defined(_WIN32_WCE)
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/* UNIX */
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#include <sys/time.h>
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#include <sys/types.h>
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#include <unistd.h>
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#define ORTP_FD_SET(d, s) FD_SET(d, s)
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#define ORTP_FD_CLR(d, s) FD_CLR(d, s)
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#define ORTP_FD_ISSET(d, s) FD_ISSET(d, s)
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#define ORTP_FD_ZERO(s) FD_ZERO(s)
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typedef fd_set ortp_fd_set;
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#else
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/* _WIN32 */
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#define ORTP_FD_ZERO(s) \
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do { \
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unsigned int __i; \
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ortp_fd_set *__arr = (s); \
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for (__i = 0; __i < sizeof (ortp_fd_set) / sizeof (ortp__fd_mask); ++__i) \
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ORTP__FDS_BITS (__arr)[__i] = 0; \
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} while (0)
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#define ORTP_FD_SET(d, s) (ORTP__FDS_BITS (s)[ORTP__FDELT(d)] |= ORTP__FDMASK(d))
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#define ORTP_FD_CLR(d, s) (ORTP__FDS_BITS (s)[ORTP__FDELT(d)] &= ~ORTP__FDMASK(d))
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#define ORTP_FD_ISSET(d, s) ((ORTP__FDS_BITS (s)[ORTP__FDELT(d)] & ORTP__FDMASK(d)) != 0)
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/* The fd_set member is required to be an array of longs. */
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typedef long int ortp__fd_mask;
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/* Number of bits per word of `fd_set' (some code assumes this is 32). */
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#define ORTP__FD_SETSIZE 1024
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/* It's easier to assume 8-bit bytes than to get CHAR_BIT. */
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#define ORTP__NFDBITS (8 * sizeof (ortp__fd_mask))
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#define ORTP__FDELT(d) ((d) / ORTP__NFDBITS)
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#define ORTP__FDMASK(d) ((ortp__fd_mask) 1 << ((d) % ORTP__NFDBITS))
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/* fd_set for select and pselect. */
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typedef struct
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{
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ortp__fd_mask fds_bits[ORTP__FD_SETSIZE / ORTP__NFDBITS];
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# define ORTP__FDS_BITS(set) ((set)->fds_bits)
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} ortp_fd_set;
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#endif /*end _WIN32*/
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struct _SessionSet
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{
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ortp_fd_set rtpset;
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};
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typedef struct _SessionSet SessionSet;
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#define session_set_init(ss) ORTP_FD_ZERO(&(ss)->rtpset)
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ORTP_PUBLIC SessionSet * session_set_new(void);
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/**
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* This macro adds the rtp session to the set.
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* @param ss a set (SessionSet object)
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* @param rtpsession a RtpSession
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**/
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#define session_set_set(ss,rtpsession) ORTP_FD_SET((rtpsession)->mask_pos,&(ss)->rtpset)
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/**
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* This macro tests if the session is part of the set. 1 is returned if true, 0 else.
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*@param ss a set
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*@param rtpsession a rtp session
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*
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**/
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#define session_set_is_set(ss,rtpsession) ORTP_FD_ISSET((rtpsession)->mask_pos,&(ss)->rtpset)
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/**
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* Removes the session from the set.
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*@param ss a set of sessions.
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*@param rtpsession a rtp session.
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*
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*
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**/
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#define session_set_clr(ss,rtpsession) ORTP_FD_CLR((rtpsession)->mask_pos,&(ss)->rtpset)
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#define session_set_copy(dest,src) memcpy(&(dest)->rtpset,&(src)->rtpset,sizeof(ortp_fd_set))
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/**
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* Frees a SessionSet.
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**/
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ORTP_PUBLIC void session_set_destroy(SessionSet *set);
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ORTP_PUBLIC int session_set_select(SessionSet *recvs, SessionSet *sends, SessionSet *errors);
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ORTP_PUBLIC int session_set_timedselect(SessionSet *recvs, SessionSet *sends, SessionSet *errors, struct timeval *timeout);
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#ifdef __cplusplus
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}
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#endif
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#endif
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