private void ProcessVideo(RtmpMessage message)
{
var payload = message.Payload.Span;
var frame_type = (payload[0] >> 4) & 0x0f;
var codec_id = payload[0] & 0x0f;
var video = _session.VideoCodec;
if (video == null)
{
video = new VideoCodecInfo
{
CodecId = codec_id,
};
_logger.LogInformation(
$@"[rtmp publish] Handle video. id ={_session.Id}
streamPath ={_session.PublishStream.Path}
frame_type ={frame_type}
codec_id ={codec_id}
codec_name ={video.CodecName} {video.Width} x {video.Height}");
}
if (codec_id == RtmpConstants.H264Video || codec_id == RtmpConstants.H265Video)
{
//cache avc sequence header
if (frame_type == 1 && payload[1] == 0)
{
video.AvcSequenceHeader = new byte[payload.Length];
payload.CopyTo(video.AvcSequenceHeader.Span);
dynamic info = AVUtil.ReadAVCSpecificConfig(payload);
video.Width = info.width;
video.Height = info.height;
video.ProfileName = AVUtil.GetAVCProfileName(info);
video.Level = info.level;
}
}
}
private void ProcessAudio(RtmpMessage message)
{
var payload = message.Payload.Span;
var sound_format = (payload[0] >> 4) & 0x0f;
var sound_type = payload[0] & 0x01;
var sound_size = (payload[0] >> 1) & 0x01;
var sound_rate = (payload[0] >> 2) & 0x03;
var audio = _session.AudioCodec;
if (audio == null)
{
audio = new AudioCodecInfo
{
CodecId = sound_format,
Samplerate = RtmpConstants.AudioSoundRates[sound_rate],
Channels = ++sound_type
};
_session.AudioCodec = audio;
if (sound_format == 4)
{
audio.Samplerate = 16000;
}
else if (sound_format == 5)
{
audio.Samplerate = 8000;
}
else if (sound_format == 11)
{
audio.Samplerate = 16000;
}
else if (sound_format == 14)
{
audio.Samplerate = 8000;
}
if (sound_format != 10)
{
_logger.LogInformation($@"[rtmp publish] Handle audio. id ={_session.Id}
streamPath ={_session.PublishStream.Path}
sound_format ={sound_format}
sound_type ={sound_type}
sound_size ={sound_size}
sound_rate ={sound_rate}
codec_name ={audio.CodecName} {audio.Samplerate}
{audio.Channels}ch");
}
}
if (audio.CodecId == RtmpConstants.AacAudio && payload[1] == 0)
{
dynamic info = AVUtil.ReadAACSpecificConfig(payload);
audio.AacSequenceHeader = new byte[payload.Length];
payload.CopyTo(audio.AacSequenceHeader.Span);
audio.ProfileName = AVUtil.GetAacProfileName(info);
audio.Samplerate = info.sample_rate;
audio.Channels = info.channels;
_logger.LogInformation(
$@"[rtmp publish] Handle audio. id ={_session.Id}
streamPath ={_session.PublishStream.Path}
sound_format ={sound_format}
sound_type ={sound_type}
sound_size ={sound_size}
sound_rate ={sound_rate}
codec_name ={audio.CodecName} {audio.Samplerate} {audio.Channels}ch");
}
}