public AACFrame(byte[] data, long timeStamp, uint frameId, AACProfile profile,
int sampleRate, byte channels)
{
RawData = data;
TimeStamp = timeStamp;
FrameId = frameId;
Profile = profile;
SampleRate = sampleRate;
Channels = channels;
}
public static byte[] AssembleAudioFrame(byte[] data, AACProfile profile,
int samplingFreq, byte channels)
{
byte[] adtsHeader = new byte[ADTS_HEADER_LENGTH];
int frameSize = data.Length + ADTS_HEADER_LENGTH;
byte sampling_index = GetSamplingFrequencyIndex(samplingFreq);
adtsHeader[0] = 0xFF;
adtsHeader[1] = 0xF0 | (ADTS_HEADER_ID << 3) | 0x1;
adtsHeader[2] = (byte)(((byte)profile << 6) | (sampling_index << 2) | 0x2 | (channels & 0x4));
adtsHeader[3] = (byte)(((channels & 0x3) << 6) | 0x30 | (frameSize >> 11));
adtsHeader[4] = (byte)((frameSize >> 3) & 0x00FF);
adtsHeader[5] = (byte)(((frameSize & 0x0007) << 5) + 0x1F);
adtsHeader[6] = 0xFC;
return(adtsHeader);
}
public AACFrame AssembleAudioFrame(AudioData data, AACProfile profile,
int samplingFreq, byte channels)
{
AACFrame aacFrame = null;
ulong timestamp = data.Timestamp;
if (timestamp > _lastProcessedTimestamp)
{
// Only process new audio frames
aacFrame = new AACFrame(data.Data, data.Timestamp, data.FrameId, data.Flags,
profile, samplingFreq, channels);
_lastProcessedTimestamp = timestamp;
}
return(aacFrame);
}
public static AACFrame AssembleAudioFrame(AudioData data, AACProfile profile,
int samplingFreq, byte channels)
{
return(new AACFrame(data.Data, data.Timestamp, data.FrameId, profile,
samplingFreq, channels));
}
