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rtsputils.c
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rtsputils.c
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/*
* rtsputils.cpp
* 肖军
* 2011.7.12创建
*/
#include <string.h>
#include <stdio.h>
#include <sys/socket.h>
#include <unistd.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <sys/ioctl.h>
#include <pthread.h>
#include <sys/time.h>
#include "fcntl.h"
#include "rtspservice.h"
#include "rtsputils.h"
#include "rtputils.h"
#include "picture_t.h"
#include "ringfifo.h"
extern int g_s32DoPlay;
struct encoded_pic_t buffer_pic;
//===============add===================
//=====================================
char *sock_ntop_host(const struct sockaddr *sa, socklen_t salen, char *str, size_t len)
{
switch (sa->sa_family) {
case AF_INET:
{
struct sockaddr_in *sin = (struct sockaddr_in *) sa;
if (inet_ntop(AF_INET, &sin->sin_addr, str, len) == NULL)
return(NULL);
return(str);
}
default:
snprintf(str, len, "sock_ntop_host: unknown AF_xxx: %d, len %d",
sa->sa_family, salen);
return(str);
}
return (NULL);
}
int tcp_accept(int fd)
{
int f;
struct sockaddr_storage addr;
socklen_t addrlen = sizeof(addr);
memset(&addr,0,sizeof(addr));
addrlen=sizeof(addr);
/*接收连接,创建一个新的socket,返回其描述符*/
f = accept (fd, (struct sockaddr *)&addr, &addrlen);
return f;
}
void tcp_close(int s)
{
close(s);
}
int tcp_connect(unsigned short port, char *addr)
{
int f;
int on=1;
int one = 1;/*used to set SO_KEEPALIVE*/
struct sockaddr_in s;
int v = 1;
if ((f = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP))<0) {
fprintf(stderr, "socket() error in tcp_connect.\n" );
return -1;
}
setsockopt(f, SOL_SOCKET, SO_REUSEADDR, (char *) &v, sizeof(int));
s.sin_family = AF_INET;
s.sin_addr.s_addr = inet_addr(addr);//htonl(addr);
s.sin_port = htons(port);
// set to non-blocking
if (ioctl(f, FIONBIO, &on) < 0) {
fprintf(stderr,"ioctl() error in tcp_connect.\n" );
return -1;
}
if (connect(f,(struct sockaddr*)&s, sizeof(s)) < 0) {
fprintf(stderr,"connect() error in tcp_connect.\n" );
return -1;
}
if(setsockopt(f, SOL_SOCKET, SO_KEEPALIVE, &one, sizeof(one))<0){
fprintf(stderr,"setsockopt() SO_KEEPALIVE error in tcp_connect.\n" );
return -1;
}
return f;
}
int tcp_listen(unsigned short port)
{
int f;
int on=1;
struct sockaddr_in s;
int v = 1;
/*创建套接字*/
if ((f = socket(AF_INET, SOCK_STREAM, 0))<0)
{
fprintf(stderr, "socket() error in tcp_listen.\n" );
return -1;
}
/*设置socket的可选参数*/
setsockopt(f, SOL_SOCKET, SO_REUSEADDR, (char *) &v, sizeof(int));
s.sin_family = AF_INET;
s.sin_addr.s_addr = htonl(INADDR_ANY);
s.sin_port = htons(port);
/*绑定socket*/
if (bind (f, (struct sockaddr *)&s, sizeof (s)))
{
fprintf(stderr, "bind() error in tcp_listen" );
return -1;
}
//设置为非阻塞方式
if (ioctl(f, FIONBIO, &on) < 0)
{
fprintf(stderr, "ioctl() error in tcp_listen.\n" );
return -1;
}
/*监听*/
if (listen(f, SOMAXCONN) < 0)
{
fprintf(stderr, "listen() error in tcp_listen.\n" );
return -1;
}
return f;
}
int tcp_read(int fd, void *buffer, int nbytes, struct sockaddr *Addr)
{
int n;
socklen_t Addrlen = sizeof(struct sockaddr);
char addr_str[128];
//fprintf(stderr, "readaddr:%s ", sock_ntop_host(Addr, Addrlen, addr_str, sizeof(addr_str)) );
//fprintf(stderr, "readPort:%d\n",ntohs(((struct sockaddr_in *)Addr)->sin_port));
n=recv(fd, buffer, nbytes, 0);
//printf ("read count:%d\n",n);
if(n>0)
{
//获取对方IP信息
if( getpeername(fd, Addr, &Addrlen) < 0 )
{
fprintf(stderr,"error getperrname:%s %i\n", __FILE__, __LINE__);
}
else
{
//打印出IP和port
fprintf(stderr, "%s ", sock_ntop_host(Addr, Addrlen, addr_str, sizeof(addr_str)) );
fprintf(stderr, "Port:%d\n",ntohs(((struct sockaddr_in *)Addr)->sin_port));
}
}
return n;
}
/*
int tcp_write(int fd, void *buffer, int nbytes)
{
int n;
n = write(fd, buffer, nbytes);
return n;
}
*/
int tcp_write(int connectSocketId, char *dataBuf, int dataSize)
{
int actDataSize;
//发送数据
while(dataSize > 0)
{
actDataSize = send(connectSocketId, dataBuf, dataSize, 0);
if(actDataSize<=0)
break;
dataBuf += actDataSize;
dataSize -= actDataSize;
}
if(dataSize > 0)
{
printf("Send Data error\n");
return -1;
}
return 0;
}
/* schedule 相关 */
stScheList sched[MAX_CONNECTION];
int stop_schedule = 0;//是否退出schedule
int num_conn = 2; /*连接个数*/
int ScheduleInit()
{
int i;
pthread_t thread=0;
/*初始化数据*/
for (i=0; i<MAX_CONNECTION; ++i)
{
sched[i].rtp_session=NULL;
sched[i].play_action=NULL;
sched[i].valid=0;
sched[i].BeginFrame=0;
}
/*创建处理主线程*/
pthread_create(&thread,NULL,schedule_do,NULL);
return 0;
}
void *schedule_do(void *arg)
{
int i=0;
struct timeval now;
unsigned long long mnow;
char *pDataBuf, *pFindNal;
unsigned int ringbuffer;
struct timespec ts = {0,33333};
int s32FileId;
unsigned int u32NaluToken;
char *pNalStart=NULL;
int s32NalSize;
int s32FindNal = 0;
int buflen=0,ringbuflen=0,ringbuftype;
struct ringbuf ringinfo;
//=====================
#ifdef RTSP_DEBUG
printf("The pthread %s start\n", __FUNCTION__);
#endif
//分配空间
//pDataBuf = (char *)malloc(200000);
/*//==============不需要============
if((s32FileId = open("test.264", O_RDONLY)) < 0)
{
printf("Open test.264 error\n");
goto cleanup;
}
*/
do
{
nanosleep(&ts, NULL);
// trace_point();
s32FindNal = 0;
//如果有客户端连接,则g_s32DoPlay大于零
if(g_s32DoPlay>0)
{
//================add==========================
//==============================================
/*
//如果起始地址为空则查找,只有在第一次时运行
if(pNalStart == NULL)
{
//查找nalu起始位置,保存在pNalStart中
pFindNal = pDataBuf;
if(read(s32FileId, pFindNal, 4) != 4)
{
//printf("File END %d!!!!!!!\n", __LINE__);
goto cleanup;
}
for(i=0; i<200000-4; i++,pFindNal++)
{
memcpy(&u32NaluToken, pFindNal, 4*sizeof(char));
if(0x01000000 == u32NaluToken)
{
//标记nalu起始位置,去掉头标识
pNalStart = pFindNal + 4;
#ifdef RTSP_DEBUG
printf("\tFind Nalu Head\n");
#endif
break;
}
if(read(s32FileId, pFindNal+4, 1) != 1)
{
//printf("File END %d!!!!!!!\n", __LINE__);
goto cleanup;
}
}
}
//查找结束标志起始地址
pFindNal = pDataBuf;
//发送数据起始地址
pNalStart = pDataBuf;
//查找nalu结束位置
if(read(s32FileId, pFindNal, 4) != 4)
{
//printf("\tFile END %d!!!!!!!\n", __LINE__);
continue;
}
for(i=0; i<190000; i++,pFindNal++)
{
memcpy(&u32NaluToken, pFindNal, 4*sizeof(char));
if(0x01000000 == u32NaluToken)
{
//nalu数据长度
s32NalSize = pFindNal - pNalStart;
//成功找到一个完整的nalu格式数据
s32FindNal = 1;
#ifdef RTSP_DEBUG
//printf("\tFind Nalu success\n");
#endif
break;
}
if(read(s32FileId, pFindNal + 4, 1)!=1)
{
//printf("\tFile END %d!!!!!!!\n", __LINE__);
continue;
}
}
*/
ringbuflen = ringget(&ringinfo);
if (ringbuflen ==0)
continue ;
}
s32FindNal = 1;
for (i=0; i<MAX_CONNECTION; ++i)
{
if(sched[i].valid)
{
if(!sched[i].rtp_session->pause)
{
//计算时间戳
gettimeofday(&now,NULL);
mnow = (now.tv_sec*1000 + now.tv_usec/1000);//毫秒
if((sched[i].rtp_session->hndRtp)&&(s32FindNal))
{
// RtpSend((unsigned int)(sched[i].rtp_session->hndRtp), pNalBuf, s32NalSize, mnow);
//printf("send i frame,length:%d,pointer:%x,timestamp:%lld\n",ringinfo.size,(int)(ringinfo.buffer),mnow);
buflen=ringbuflen;
if (ringinfo.frame_type ==FRAME_TYPE_I)
sched[i].BeginFrame=1;
if (sched[i].BeginFrame== 1)
sched[i].play_action((unsigned int)(sched[i].rtp_session->hndRtp), ringinfo.buffer, ringinfo.size, mnow);
}
}
}
}
//============add================
//===============================
} while (!stop_schedule);
cleanup:
//free(pDataBuf);
//close(s32FileId);
#ifdef RTSP_DEBUG
printf("The pthread %s end\n", __FUNCTION__);
#endif
return ERR_NOERROR;
}
//把RTP会话添加进schedule中,错误返回-1,正常返回schedule队列号
int schedule_add(RTP_session *rtp_session)
{
int i;
for (i=0; i<MAX_CONNECTION; ++i)
{
/*需是还没有被加入到调度队列中的会话*/
if (!sched[i].valid)
{
sched[i].valid=1;
sched[i].rtp_session=rtp_session;
//设置播放动作
sched[i].play_action=RtpSend;
printf("**adding a schedule object action %s,%d**\n", __FILE__, __LINE__);
return i;
}
}
return ERR_GENERIC;
}
int schedule_start(int id,stPlayArgs *args)
{
/* struct timeval now;
double mnow;
gettimeofday(&now,NULL);
mnow=(double)now.tv_sec*1000+(double)now.tv_usec/1000;
*/
sched[id].rtp_session->pause=0;
sched[id].rtp_session->started=1;
//播放状态,大于零则表示有客户端播放文件
g_s32DoPlay++;
return ERR_NOERROR;
}
void schedule_stop(int id)
{
// RTCP_send_packet(sched[id].rtp_session,SR);
// RTCP_send_packet(sched[id].rtp_session,BYE);
}
int schedule_remove(int id)
{
sched[id].valid=0;
sched[id].BeginFrame=0;
return ERR_NOERROR;
}
//把需要发送的信息放入rtsp.out_buffer中
int bwrite(char *buffer, unsigned short len, RTSP_buffer * rtsp)
{
/*检查是否有缓冲溢出*/
if ((rtsp->out_size + len) > (int) sizeof(rtsp->out_buffer))
{
fprintf(stderr,"bwrite(): not enough free space in out message buffer.\n");
return ERR_ALLOC;
}
/*填充数据*/
memcpy(&(rtsp->out_buffer[rtsp->out_size]), buffer, len);
rtsp->out_buffer[rtsp->out_size + len] = '\0';
rtsp->out_size += len;
#ifdef RTSP_DEBUG
printf("(Send to client:)\n%s\n",rtsp->out_buffer);
#endif
return ERR_NOERROR;
}
int send_reply(int err, char *addon, RTSP_buffer * rtsp)
{
unsigned int len;
char *b;
int res;
if (addon != NULL)
{
len = 256 + strlen(addon);
}
else
{
len = 256;
}
/*分配空间*/
b = (char *) malloc(len);
if (b == NULL)
{
fprintf(stderr,"send_reply(): memory allocation error.\n");
return ERR_ALLOC;
}
memset(b, 0, sizeof(b));
/*按照协议格式填充数据*/
sprintf(b, "%s %d %s"RTSP_EL"CSeq: %d"RTSP_EL, RTSP_VER, err, get_stat(err), rtsp->rtsp_cseq);
strcat(b, RTSP_EL);
/*将数据写入到缓冲区中*/
res = bwrite(b, (unsigned short) strlen(b), rtsp);
//释放空间
free(b);
return res;
}
//由错误码返回错误信息
const char *get_stat(int err)
{
struct {
const char *token;
int code;
} status[] = {
{
"Continue", 100}, {
"OK", 200}, {
"Created", 201}, {
"Accepted", 202}, {
"Non-Authoritative Information", 203}, {
"No Content", 204}, {
"Reset Content", 205}, {
"Partial Content", 206}, {
"Multiple Choices", 300}, {
"Moved Permanently", 301}, {
"Moved Temporarily", 302}, {
"Bad Request", 400}, {
"Unauthorized", 401}, {
"Payment Required", 402}, {
"Forbidden", 403}, {
"Not Found", 404}, {
"Method Not Allowed", 405}, {
"Not Acceptable", 406}, {
"Proxy Authentication Required", 407}, {
"Request Time-out", 408}, {
"Conflict", 409}, {
"Gone", 410}, {
"Length Required", 411}, {
"Precondition Failed", 412}, {
"Request Entity Too Large", 413}, {
"Request-URI Too Large", 414}, {
"Unsupported Media Type", 415}, {
"Bad Extension", 420}, {
"Invalid Parameter", 450}, {
"Parameter Not Understood", 451}, {
"Conference Not Found", 452}, {
"Not Enough Bandwidth", 453}, {
"Session Not Found", 454}, {
"Method Not Valid In This State", 455}, {
"Header Field Not Valid for Resource", 456}, {
"Invalid Range", 457}, {
"Parameter Is Read-Only", 458}, {
"Unsupported transport", 461}, {
"Internal Server Error", 500}, {
"Not Implemented", 501}, {
"Bad Gateway", 502}, {
"Service Unavailable", 503}, {
"Gateway Time-out", 504}, {
"RTSP Version Not Supported", 505}, {
"Option not supported", 551}, {
"Extended Error:", 911}, {
NULL, -1}
};
int i;
for (i = 0; status[i].code != err && status[i].code != -1; ++i);
return status[i].token;
}