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* This copyright notice applies to this header file only:
*
* Copyright (c) 2010-2024 NVIDIA Corporation
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the software, and to permit persons to whom the
* software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
#pragma once
#include <thread>
#include <mutex>
extern "C" {
#include <libavformat/avformat.h>
#include <libavutil/opt.h>
#include <libswresample/swresample.h>
};
#include "Logger.h"
using namespace std;
extern simplelogger::Logger *logger;
static string AvErrorToString(int av_error_code) {
const auto buf_size = 1024U;
char *err_string = (char *)calloc(buf_size, sizeof(*err_string));
if (!err_string) {
return string();
}
if (0 != av_strerror(av_error_code, err_string, buf_size - 1)) {
free(err_string);
stringstream ss;
ss << "Unknown error with code " << av_error_code;
return ss.str();
}
string str(err_string);
free(err_string);
return str;
}
class FFmpegStreamer {
private:
AVFormatContext *oc = NULL;
AVStream *vs = NULL;
int nFps = 0;
public:
FFmpegStreamer(AVCodecID eCodecId, int nWidth, int nHeight, int nFps, const char *szInFilePath) : nFps(nFps) {
avformat_network_init();
int ret = 0;
if ((eCodecId == AV_CODEC_ID_H264) || (eCodecId == AV_CODEC_ID_HEVC))
ret = avformat_alloc_output_context2(&oc, NULL, "mpegts", NULL);
else if (eCodecId == AV_CODEC_ID_AV1)
ret = avformat_alloc_output_context2(&oc, NULL, "ivf", NULL);
if (ret < 0) {
LOG(ERROR) << "FFmpeg: failed to allocate an AVFormatContext. Error message: "
<< AvErrorToString(ret);
return;
}
oc->url = av_strdup(szInFilePath);
LOG(INFO) << "Streaming destination: " << oc->url;
// Add video stream to oc
vs = avformat_new_stream(oc, NULL);
if (!vs) {
LOG(ERROR) << "FFMPEG: Could not alloc video stream";
return;
}
vs->id = 0;
// Set video parameters
AVCodecParameters *vpar = vs->codecpar;
vpar->codec_id = eCodecId;
vpar->codec_type = AVMEDIA_TYPE_VIDEO;
vpar->width = nWidth;
vpar->height = nHeight;
// Everything is ready. Now open the output stream.
if (avio_open(&oc->pb, oc->url, AVIO_FLAG_WRITE) < 0) {
LOG(ERROR) << "FFMPEG: Could not open " << oc->url;
return ;
}
// Write the container header
if (avformat_write_header(oc, NULL)) {
LOG(ERROR) << "FFMPEG: avformat_write_header error!";
return;
}
}
~FFmpegStreamer() {
if (oc) {
av_write_trailer(oc);
avio_close(oc->pb);
avformat_free_context(oc);
}
}
bool Stream(uint8_t *pData, int nBytes, int nPts) {
AVPacket *pkt = av_packet_alloc();
if (!pkt) {
LOG(ERROR) << "AVPacket allocation failed !";
return false;
}
pkt->pts = av_rescale_q(nPts++, AVRational {1, nFps}, vs->time_base);
// No B-frames
pkt->dts = pkt->pts;
pkt->stream_index = vs->index;
pkt->data = pData;
pkt->size = nBytes;
if(!memcmp(pData, "\x00\x00\x00\x01\x67", 5)) {
pkt->flags |= AV_PKT_FLAG_KEY;
}
// Write the compressed frame into the output
int ret = av_write_frame(oc, pkt);
av_write_frame(oc, NULL);
if (ret < 0) {
LOG(ERROR) << "FFMPEG: Error while writing video frame";
}
av_packet_free(&pkt);
return true;
}
};
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