mirror of https://github.com/mpv-player/mpv
65 lines
1.6 KiB
C
65 lines
1.6 KiB
C
/* Imported from the dvbstream-0.2 project */
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <sys/types.h>
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#include "config.h"
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#ifndef HAVE_WINSOCK2
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#include <netinet/in.h>
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#include <sys/socket.h>
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#include <arpa/inet.h>
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#else
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#include <winsock2.h>
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#include <ws2tcpip.h>
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#endif
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/* MPEG-2 TS RTP stack */
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#define DEBUG 1
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#include "rtp.h"
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int getrtp2(int fd, struct rtpheader *rh, char** data, int* lengthData) {
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static char buf[1600];
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unsigned int intP;
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char* charP = (char*) &intP;
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int headerSize;
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int lengthPacket;
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lengthPacket=recv(fd,buf,1590,0);
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if (lengthPacket==0)
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exit(1);
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if (lengthPacket<0) {
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fprintf(stderr,"socket read error\n");
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exit(2);
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}
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if (lengthPacket<12) {
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fprintf(stderr,"packet too small (%d) to be an rtp frame (>12bytes)\n", lengthPacket);
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exit(3);
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}
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rh->b.v = (unsigned int) ((buf[0]>>6)&0x03);
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rh->b.p = (unsigned int) ((buf[0]>>5)&0x01);
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rh->b.x = (unsigned int) ((buf[0]>>4)&0x01);
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rh->b.cc = (unsigned int) ((buf[0]>>0)&0x0f);
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rh->b.m = (unsigned int) ((buf[1]>>7)&0x01);
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rh->b.pt = (unsigned int) ((buf[1]>>0)&0x7f);
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intP = 0;
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memcpy(charP+2,&buf[2],2);
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rh->b.sequence = ntohl(intP);
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intP = 0;
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memcpy(charP,&buf[4],4);
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rh->timestamp = ntohl(intP);
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headerSize = 12 + 4*rh->b.cc; /* in bytes */
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*lengthData = lengthPacket - headerSize;
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*data = (char*) buf + headerSize;
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// fprintf(stderr,"Reading rtp: v=%x p=%x x=%x cc=%x m=%x pt=%x seq=%x ts=%x lgth=%d\n",rh->b.v,rh->b.p,rh->b.x,rh->b.cc,rh->b.m,rh->b.pt,rh->b.sequence,rh->timestamp,lengthPacket);
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return(0);
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}
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