Exemplo n.º 1
0
		public bool CanHandleData(ByteBuffer data) {
			if (data.Limit == 0)
				return false;// Empty buffer
			byte first = data.Get();
			bool result = ((first & 0x0f) == VideoCodec.AVC.Id);
			data.Rewind();
			return result;
		}
Exemplo n.º 2
0
		public bool AddData(ByteBuffer data) {
			if (data.Limit == 0)
				return true;
			if (!CanHandleData(data))
				return false;
			data.Rewind();
			byte frameType = data.Get();
			data.Rewind();
			if ((frameType & 0xf0) != VideoCodec.FLV_FRAME_KEY)
				return true;// Not a keyframe

			//If we don't have the AVCDecoderConfigurationRecord stored...
			if (_blockDataAVCDCR == null) {
				data.Get();//FT
				data.Get();//CODECID
				byte AVCPacketType = data.Get();
				//Sequence Header / here comes a AVCDecoderConfigurationRecord
				if (log.IsDebugEnabled)
					log.Debug(string.Format("AVCPacketType: {0}", AVCPacketType));
				if (AVCPacketType == 0) {
					data.Rewind();
					// Store AVCDecoderConfigurationRecord data
					_dataCountAVCDCR = data.Limit;
					if (_blockSizeAVCDCR < _dataCountAVCDCR) {
						_blockSizeAVCDCR = _dataCountAVCDCR;
						_blockDataAVCDCR = new byte[_blockSizeAVCDCR];
					}
					data.Read(_blockDataAVCDCR, 0, _dataCountAVCDCR);
				}
			}
			data.Rewind();
			// Store last keyframe
			_dataCountLKF = data.Limit;
			if (_blockSizeLKF < _dataCountLKF) {
				_blockSizeLKF = _dataCountLKF;
				_blockDataLKF = new byte[_blockSizeLKF];
			}
			data.Read(_blockDataLKF, 0, _dataCountLKF);
			data.Rewind();
			return true;
		}