#include<stdio.h>
#include<string>
#include<vector>
extern "C"
{
#include "libavformat/avformat.h"
#include "libavutil/mathematics.h"
#include "libavutil/time.h"
}
using namespace std;
int main(std::string task_path,std::string objective_path,std::vector<std::string> warmup_path
,int start_timeMS, int persistent_timeMS)
{
AVOutputFormat *ofmt = NULL;
AVFormatContext *ifmt_ctx = NULL, *ofmt_ctx = NULL;
AVPacket pkt;
const char *in_filename, *out_filename;
int ret, i;
int videoindex = -1;
int frame_index = 0;
int64_t start_time = 0;
in_filename = "/home/centos/1.flv";
out_filename = "rtmp://10.237.92.44/live/livestream";
avformat_network_init();
if((ret = avformat_open_input(&ifmt_ctx, in_filename, 0, 0)) < 0 )
{
printf("Could not open input file.");
goto end;
}
if((ret = avformat_find_stream_info(ifmt_ctx, 0)) < 0){
printf("Failed to retrieve input stram information");
goto end;
}
for(i = 0 ; i < ifmt_ctx -> nb_streams ; i++)
if(ifmt_ctx -> streams[i] -> codecpar -> codec_type == AVMEDIA_TYPE_VIDEO)
{
videoindex = i;
break;
}
av_dump_format(ifmt_ctx, videoindex, in_filename, 0);
avformat_alloc_output_context2(&ofmt_ctx, NULL, "flv", out_filename);
if(!ofmt_ctx){
printf("Could not create output context\n");
ret = AVERROR_UNKNOWN;
goto end;
}
ofmt = ofmt_ctx -> oformat;
for(i = 0 ; i < ifmt_ctx -> nb_streams ; i++)
{
AVStream *in_stream = ifmt_ctx -> streams[i];
AVStream *out_stream = avformat_new_stream(ofmt_ctx, in_stream->codec->codec);
if(!out_stream){
printf("Faild allocating output stream\n");
ret = AVERROR_UNKNOWN;
goto end;
}
ret = avcodec_copy_context(out_stream -> codec, in_stream->codec);
if(ret < 0){
printf("Failed to copy context from input to output stream codec context\n");
goto end;
}
out_stream->codec->codec_tag = 0;
if(ofmt_ctx->oformat->flags & AVFMT_GLOBALHEADER)
out_stream->codec->flags |= AV_CODEC_FLAG_GLOBAL_HEADER;
}
av_dump_format(ofmt_ctx, 0, out_filename, 1);
if(!(ofmt->flags & AVFMT_NOFILE)){
ret = avio_open(&ofmt_ctx->pb, out_filename, AVIO_FLAG_WRITE);
if(ret < 0){
printf("Could not open output URL '%s'", out_filename);
goto end;
}
}
ret = avformat_write_header(ofmt_ctx, NULL);
if(ret < 0){
printf("Error occurred when opening output URL\n");
goto end;
}
start_time = av_gettime();
while(1){
AVStream *in_stream, *out_stream;
ret = av_read_frame(ifmt_ctx, &pkt);
if(ret < 0)
break;
if(pkt.pts == AV_NOPTS_VALUE) {
AVRational time_base1 = in_stream->time_base;
int64_t calc_duration = (double)AV_TIME_BASE / av_q2d(in_stream->r_frame_rate);
pkt.pts = (double)(frame_index*calc_duration) / (double)(av_q2d(time_base1)*AV_TIME_BASE);
pkt.dts = pkt.pts;
pkt.duration = (double)calc_duration / (double)(av_q2d(time_base1)*AV_TIME_BASE);
frame_index++;
}
if(pkt.stream_index == videoindex)
{
AVRational time_base=ifmt_ctx->streams[videoindex]->time_base;
AVRational time_base_q={1,AV_TIME_BASE};
int64_t pts_time = av_rescale_q(pkt.dts, time_base, time_base_q);
int64_t now_time = av_gettime() - start_time;
if (pts_time > now_time)
av_usleep(pts_time - now_time);
}
in_stream = ifmt_ctx->streams[pkt.stream_index];
out_stream = ofmt_ctx->streams[pkt.stream_index];
pkt.pts = av_rescale_q_rnd(pkt.pts, in_stream->time_base, out_stream->time_base, (AVRounding)(AV_ROUND_NEAR_INF|AV_ROUND_PASS_MINMAX));
pkt.dts = av_rescale_q_rnd(pkt.dts, in_stream->time_base, out_stream->time_base, (AVRounding)(AV_ROUND_NEAR_INF|AV_ROUND_PASS_MINMAX));
pkt.duration = av_rescale_q(pkt.duration, in_stream->time_base, out_stream->time_base);
pkt.pos = -1;
if(pkt.stream_index == videoindex){
printf("Send %8d video frams to output URL\n",frame_index);
frame_index++;
}
ret = av_interleaved_write_frame(ofmt_ctx, &pkt);
if(ret < 0){
printf("Error muxing pakcet\n");
break;
}
av_free_packet(&pkt);
}
av_write_trailer(ofmt_ctx);
end:
avformat_close_input(&ifmt_ctx);
if(ofmt_ctx && !(ofmt->flags & AVFMT_NOFILE))
avio_close(ofmt_ctx->pb);
avformat_free_context(ofmt_ctx);
if(ret < 0 && ret != AVERROR_EOF){
printf("Error coourred\n");
return -1;
}
return 0;
}