private void MicCapturer_CallBack(byte[] buffer)
{
var buf = Enc_AAC(buffer);
if (buf == null)
{
return;
}
if (buf.Length == 0)
{
return;
}
//生成媒体帧
var mf = new StreamingKit.MediaFrame()
{
Frequency = _frequency,
Samples = (short)_audioCfg.samples,
IsKeyFrame = (byte)((_audioFrameIndex++ % 50) == 0 ? 1 : 0),
Encoder = _audioCfg.encoder,
MediaFrameVersion = 0,
Channel = _channels,
AudioFormat = 2,
IsAudio = 1,
NTimetick = Environment.TickCount,
Ex = 1,
Size = buf.Length,
};
mf.SetData(buf);
mf.MediaFrameVersion = (byte)(mf.IsKeyFrame == 1 ? 1 : 0);
mf.Ex = (byte)(mf.IsKeyFrame == 1 ? 0 : 1);
if (_isFirstKeyFrame)
{
_isFirstKeyFrame = false;
var resetCodecMediaFrame = CreateResetCodecMediaFrame(mf);
if (_callBack != null)
{
_callBack(resetCodecMediaFrame);
}
}
if (_callBack != null)
{
_callBack(mf);
}
if (bw == null)
{
bw = new BinaryWriter(new System.IO.FileStream(@"D:\aac5.aac", System.IO.FileMode.Create));
}
byte[] bufs = mf.GetBytes();
bw.Write(bufs.Length);
bw.Write(bufs);
}
public static MediaFrame CreateAudioKeyFrame(AudioEncodeCfg cfg, long timetick, byte[] data, int offset, int size)
{
MediaFrame mFrame = CreateAudioFrame(cfg, timetick, data, offset, size);// new
// MediaFrame((byte)
// 1);
mFrame.MediaFrameVersion = 1;
mFrame.IsKeyFrame = 1;
mFrame.Frequency = cfg.Frequency;
mFrame.Channel = cfg.Channel;
mFrame.AudioFormat = (short)cfg.Format;
mFrame.Samples = (short)cfg.Samples;
mFrame.Encoder = cfg.encoder;
return(mFrame);
}
public static MediaFrame CreateCommandMediaFrame(bool isAudio, MediaFrameCommandType cmd, byte[] data = null)
{
data ??= Array.Empty <byte>();
var mf = new MediaFrame()
{
MediaFrameVersion = 0xff,
Ex = (byte)cmd,
IsKeyFrame = 0,
IsAudio = (byte)(isAudio ? 1 : 0),
NTimetick = 0,
Size = data.Length,
};
mf.SetData(data ?? Array.Empty <byte>());
return(mf);
}
public static MediaFrame CreateAudioFrame(AudioEncodeCfg cfg, long timetick, byte[] data, int offset, int size)
{
if (cfg is null)
{
throw new ArgumentNullException(nameof(cfg));
}
MediaFrame mFrame = new MediaFrame(0)
{
IsAudio = 1,
IsKeyFrame = 0,
NTimetick = timetick,
Size = size,
Offset = offset,
};
mFrame.SetData(data);
return(mFrame);
}
