private MediaFrame CreateAudioMediaFrame(byte[] data, long tick)
{
if (_firstAudioFrame)
{
var adts = new AAC_ADTS(data);
var frequencys = new int[] { 96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050, 16000, 2000, 11025 };
Frequency = frequencys[adts.MPEG_4_Sampling_Frequency_Index];
Channel = adts.MPEG_4_Channel_Configuration;
AudioFormat = 16;
Samples = 0;
}
VideoFrameCount++;
var mf = new MediaFrame()
{
nIsAudio = 1,
nIsKeyFrame = 1,
Data = data,
nSize = data.Length,
nChannel = Channel,
nFrequency = Frequency,
nAudioFormat = AudioFormat,
nTimetick = tick,
nOffset = 0,
nEncoder = MediaFrame.AAC_Encoder,
nEx = (byte)(_firstAudioFrame ? 0 : 1),
MediaFrameVersion = 1,
};
_firstAudioFrame = false;
return(mf);
}
private byte[] DecMultiAAC(byte[] buffer)
{
var aacs = AAC_ADTS.GetMultiAAC(buffer);
if (aacs != null)
{
if (aacs.Length == 1)
{
return(DecAAC(buffer));
}
else
{
return(DecMultiAAC(aacs));
}
}
else
{
return(new byte[0]);
}
}