王纲非标准流
作者：互联网
#ifndef PCH_H
#define PCH_H
extern "C"
{
#include "libavutil/opt.h"
#include "libavutil/channel_layout.h"
#include "libavutil/common.h"
#include "libavutil/imgutils.h"
#include "libavutil/mathematics.h"
#include "libavutil/samplefmt.h"
#include "libavutil/time.h"
#include "libavutil/fifo.h"
#include "libavcodec/avcodec.h"
#include "libavformat/avformat.h"
#include "libavformat/avio.h"
// #include "libavfilter/avfiltergraph.h"
#include "libavfilter/avfilter.h"
#include "libavfilter/buffersink.h"
#include "libavfilter/buffersrc.h"
#include "libswscale/swscale.h"
#include "libswresample/swresample.h"
}
#endif
pch.h
// CGaveFile.cpp : 定义控制台应用程序的入口点。
//
/* Copyright [c] 2018-2028 By www.chungen90.com Allrights Reserved
This file give a simple example of how to get stream from
buffer. Any questions, you can join QQ group for help, QQ
Group number:127903734 or 766718184.
*/
//#include "stdafx.h"
#include "pch.h"
#include <string>
#include <memory>
#include <thread>
#include <iostream>
#include <WinSock2.h>
using namespace std;
#pragma comment(lib, "Ws2_32.lib")
class UdpSocket
{
public:
UdpSocket()
{
}
public:
SOCKET RecvSocket;
};
AVFormatContext *inputContext = nullptr;
AVFormatContext * outputContext;
int64_t lastReadPacktTime ;
UdpSocket udpSocket;
static int interrupt_cb(void *ctx)
{
int timeout = 10;
if(av_gettime() - lastReadPacktTime > timeout *1000 *1000)
{
return -1;
}
return 0;
}
static int readUdpSocket(void *opaque, uint8_t *buf, int buf_size)
{
UdpSocket *udpSocket = (UdpSocket *)opaque;
char cRecvBuff[2000]; //定义接收缓冲区
SOCKADDR_IN sin,saClient;
int nSize = sizeof(saClient);
int readSize = buf_size < sizeof(cRecvBuff) ? buf_size :sizeof(cRecvBuff);
auto iResult = recvfrom(udpSocket->RecvSocket,
(char *)cRecvBuff, readSize, 0, (SOCKADDR *) & saClient, &nSize);
if (iResult == SOCKET_ERROR) {
wprintf(L"recvfrom failed with error %d\n", WSAGetLastError());
iResult = 0;
}
else
{
if( iResult > 0)
{
memcpy(buf,cRecvBuff ,iResult );
}
}
if( iResult > 0)
{
return iResult;
}
return iResult;
}
int OpenInput()
{
lastReadPacktTime = av_gettime();
int size = 32 * 1024;
uint8_t * iobuffer = (uint8_t *)av_malloc(size);
AVIOContext *avio = avio_alloc_context(iobuffer, size, 0, &udpSocket, readUdpSocket, NULL, NULL);
inputContext = avformat_alloc_context();
inputContext->pb = avio;
inputContext->start_time_realtime = av_gettime();
int ret = avformat_open_input(&inputContext, nullptr, nullptr, nullptr);
if(ret < 0)
{
av_log(NULL, AV_LOG_ERROR, "Input file open input failed\n");
return ret;
}
ret = avformat_find_stream_info(inputContext,nullptr);
if(ret < 0)
{
av_log(NULL, AV_LOG_ERROR, "Find input file stream inform failed\n");
}
else
{
av_log(NULL, AV_LOG_FATAL, "Open input file success\n");
}
return ret;
}
shared_ptr<AVPacket> ReadPacketFromSource()
{
shared_ptr<AVPacket> packet(static_cast<AVPacket*>(av_malloc(sizeof(AVPacket))), [&](AVPacket *p) { av_packet_free(&p); av_freep(&p);});
av_init_packet(packet.get());
lastReadPacktTime = av_gettime();
int ret = av_read_frame(inputContext, packet.get());
if(ret >= 0)
{
return packet;
}
else
{
return nullptr;
}
}
void av_packet_rescale_ts(AVPacket *pkt, AVRational src_tb, AVRational dst_tb)
{
if (pkt->pts != AV_NOPTS_VALUE)
pkt->pts = av_rescale_q(pkt->pts, src_tb, dst_tb);
if (pkt->dts != AV_NOPTS_VALUE)
pkt->dts = av_rescale_q(pkt->dts, src_tb, dst_tb);
if (pkt->duration > 0)
pkt->duration = av_rescale_q(pkt->duration, src_tb, dst_tb);
}
int WritePacket(shared_ptr<AVPacket> packet)
{
auto inputStream = inputContext->streams[packet->stream_index];
auto outputStream = outputContext->streams[packet->stream_index];
av_packet_rescale_ts(packet.get(),inputStream->time_base,outputStream->time_base);
return av_interleaved_write_frame(outputContext, packet.get());
}
int OpenOutput(string outUrl)
{
int ret = avformat_alloc_output_context2(&outputContext, nullptr, "flv", outUrl.c_str());
if(ret < 0)
{
av_log(NULL, AV_LOG_ERROR, "open output context failed\n");
goto Error;
}
ret = avio_open2(&outputContext->pb, outUrl.c_str(), AVIO_FLAG_WRITE,nullptr, nullptr);
if(ret < 0)
{
av_log(NULL, AV_LOG_ERROR, "open avio failed");
goto Error;
}
for(int i = 0; i < inputContext->nb_streams; i++)
{
AVStream * stream = avformat_new_stream(outputContext, inputContext->streams[i]->codec->codec);
ret = avcodec_copy_context(stream->codec, inputContext->streams[i]->codec);
stream->codec->codec_tag = 0;
if(ret < 0)
{
av_log(NULL, AV_LOG_ERROR, "copy coddec context failed");
goto Error;
}
}
ret = avformat_write_header(outputContext, nullptr);
if(ret < 0)
{
av_log(NULL, AV_LOG_ERROR, "format write header failed");
goto Error;
}
av_log(NULL, AV_LOG_FATAL, " Open output file success %s\n",outUrl.c_str());
return ret ;
Error:
if(outputContext)
{
for(int i = 0; i < outputContext->nb_streams; i++)
{
avcodec_close(outputContext->streams[i]->codec);
}
avformat_close_input(&outputContext);
}
return ret ;
}
void CloseInput()
{
if(inputContext != nullptr)
{
avformat_close_input(&inputContext);
}
}
void CloseOutput()
{
if(outputContext != nullptr)
{
for(int i = 0 ; i < outputContext->nb_streams; i++)
{
AVCodecContext *codecContext = outputContext->streams[i]->codec;
avcodec_close(codecContext);
}
avformat_close_input(&outputContext);
}
}
void Init()
{
av_register_all();
avfilter_register_all();
avformat_network_init();
av_log_set_level(AV_LOG_ERROR);
}
int InitUdpSocket(string ip,int port)
{
WSADATA wsaData;
SOCKET sockListener;
sockaddr_in RecvAddr;
auto iResult = WSAStartup(MAKEWORD(2, 2), &wsaData);
if (iResult != NO_ERROR) {
wprintf(L"WSAStartup failed with error %d\n", iResult);
return -1;
}
udpSocket.RecvSocket = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
if (udpSocket.RecvSocket == INVALID_SOCKET) {
wprintf(L"socket failed with error %d\n", WSAGetLastError());
return -1;
}
//-----------------------------------------------
// Bind the socket to any address and the specified port.
RecvAddr.sin_family = AF_INET;
RecvAddr.sin_port = htons(port);
RecvAddr.sin_addr.s_addr = inet_addr(ip.c_str());
int nNetTimeout = 10000;
auto ret1 = setsockopt(udpSocket.RecvSocket,SOL_SOCKET,SO_RCVTIMEO,( char *)&nNetTimeout, sizeof(struct timeval));
iResult = ::bind(udpSocket.RecvSocket, (SOCKADDR *) & RecvAddr, sizeof (RecvAddr));
if (iResult != 0) {
wprintf(L"bind failed with error %d\n", WSAGetLastError());
return -1;
}
return 0;
}
int main(int argc, char* argv[])
{
Init();
string ip = "127.0.0.1";
int port = 1234;
int ret = InitUdpSocket(ip,port);
if(ret <0 )
{
cout <<"Init Udp Socket failed"<<endl;
goto Error;
}
ret = OpenInput();
if(ret >= 0)
{
ret = OpenOutput("rtmp://192.168.169.139/live/stream0");
}
if(ret <0) goto Error;
while(true)
{
auto packet = ReadPacketFromSource();
if(packet)
{
ret = WritePacket(packet);
if(ret >= 0)
{
cout<<"WritePacket Success!"<<endl;
}
else
{
cout<<"WritePacket failed!"<<endl;
}
}
else
{
break;
}
}
Error:
CloseInput();
CloseOutput();
while(true)
{
this_thread::sleep_for(chrono::seconds(100));
}
return 0;
}
main.cpp
标签：outputContext,return,int,ret,王纲,非标准,av,include 来源： https://www.cnblogs.com/zeliangzhang/p/15826220.html