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62 lines
1.9 KiB
C
62 lines
1.9 KiB
C
/* vjnet - low level network I/O for VeeJay
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*
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* (C) 2005-2016 Niels Elburg <nwelburg@gmail.com>
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*
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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
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef PACKET_H
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#define PACKET_H
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/*
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Veejay - Video streaming over UDP (Multicast)
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Veejay doesnt care about dropped packet. Dropped packet means drop frame.
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Ignoring machine byte order. Fix it yourself
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*/
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#include <stdio.h>
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#include <sys/time.h>
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#include <stdint.h>
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typedef struct
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{
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uint16_t seq_num; /* sequence number */
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long usec; /* time stamp */
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uint16_t length; /* total number */
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uint16_t data_size; /* number of data bytes, can be smaller than CHUNK_SIZE */
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} packet_header_t;
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#define MCAST_PACKET_SIZE 1500
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#define PACKET_HEADER_LENGTH ( sizeof(packet_header_t) )
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#define CHUNK_SIZE ( MCAST_PACKET_SIZE - PACKET_HEADER_LENGTH )
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#define PACKET_PAYLOAD_SIZE ( CHUNK_SIZE + PACKET_HEADER_LENGTH )
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packet_header_t packet_construct_header(uint8_t flag);
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packet_header_t *packet_get_hdr(const void *data);
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int packet_get_data( packet_header_t *h, const void *data, uint8_t *plane);
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int packet_put_data( packet_header_t *h, void *payload, const uint8_t *plane );
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int packet_put_padded_data( packet_header_t *h, void *payload, const uint8_t *plane, int bytes );
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#endif
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