text: /*
   * FILE:    ihdtv/ihdtv.h
   * AUTHORS: Martin Benes     <martinbenesh@gmail.com>
   *          Lukas Hejtmanek  <xhejtman@ics.muni.cz>
   *          Petr Holub       <hopet@ics.muni.cz>
   *          Milos Liska      <xliska@fi.muni.cz>
   *          Jiri Matela      <matela@ics.muni.cz>
   *          Dalibor Matura   <255899@mail.muni.cz>
   *          Ian Wesley-Smith <iwsmith@cct.lsu.edu>
   *
   * Copyright (c) 2005-2209 CESNET z.s.p.o.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, is permitted provided that the following conditions
   * are met:
   * 
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   * 
   * 3. All advertising materials mentioning features or use of this software
   *    must display the following acknowledgement:
   * 
   *      This product includes software developed by CESNET z.s.p.o.
   * 
   * 4. Neither the name of CESNET nor the names of its contributors may be used 
   *    to endorse or promote products derived from this software without specific
   *    prior written permission.
   * 
   * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS
   * "AS IS" AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING,
   * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
   * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
   * EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
   * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
   * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
   * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
   * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   *
   *
   */
  
  #ifdef HAVE_CONFIG_H
  #include "config.h"
  #include "config_unix.h"
  #include "config_win32.h"
  #endif // HAVE_CONFIG_H
  
  #ifndef WIN32
  
  #ifndef _IHDTV_H_
  #define _IHDTV_H_
  
  #include <ctype.h>
  
  #include "types.h"
  
  #ifdef __cplusplus
  extern "C" {
  #endif
  
  void ihdtv_receive_frames(void);
  
  typedef struct {
  	uint32_t stream_id;
  	uint32_t offset;	// offset into frame
  	uint64_t frame_number;
  	uint8_t data[65520];
  } __attribute__((packed)) ihdtv_packet;
  
  typedef struct {
  	unsigned int rx_port_1;	// receiving ports
  	unsigned int rx_port_2;
  
  	unsigned int tx_port;
  
  	unsigned int video_packets_per_frame;
  	unsigned int video_packets_per_half_frame;
  	uint64_t current_frame;	// internal use
  
  	unsigned long bytes_per_frame;
  	unsigned long bytes_per_half_frame;
  	
  	long video_data_per_packet;	// size of ihdtv_packet.data used
  	long video_data_per_last_packet;	// size of the last packet of each half of a frame
  
  // private:
  	int rx_socket_1;
  	int rx_socket_2;
  
  	int tx_socket_1;
  	int tx_socket_2;
  
  	int pending_packet;	// flag of pending packet (ppacket)
  	ihdtv_packet ppacket; // first packet of actual frame in case it came before the end of previous frame(partly lost in ether)
  	unsigned int ppacket_size;
  	unsigned int ppacket_offset_add;	// we use this to distinguish between upper and lower half of a frame
  
  
  	struct sockaddr_in target_sockaddress_1;
  	struct sockaddr_in target_sockaddress_2;
  
  	int check_peer_ip;	// if set, in rx mode we check, whether the sender address is one of peers addresses
  	struct in_addr peer_address_1;
  	struct in_addr peer_address_2;
  } ihdtv_connection;
  
  int
  ihdtv_init_rx_session(ihdtv_connection *connection, const char* address_1, const char* address_2, unsigned int port1, unsigned int port2, long mtu);
  
  int
  ihdtv_init_tx_session(ihdtv_connection* connection, const char *address_1, const char *address_2, long mtu);
  
  
  int
  ihdtv_receive(ihdtv_connection *rx_connection, char *buffer, unsigned long buffer_length);
  
  int
  ihdtv_send(ihdtv_connection *tx_connection, struct video_frame *tx_frame, unsigned long buffer_length);
  
  #ifdef __cplusplus
  }
  #endif
  
  #endif
  
  #endif // WIN32
  
  