/// <summary>
/// 解压Speex音频数据流
/// </summary>
/// <param name="input">需要解压的数据流</param>
/// <returns>解压后的正常音频数据</returns>
public byte[] DecodeBase(byte[] input)
{
SpeexBitsApi.Speex_bits_reset(ref _decodeSpeexBits);
SpeexBitsApi.Speex_bits_read_from(ref _decodeSpeexBits, input, input.Length);
//int i = SpeexBitsApi.Speex_bits_nbytes(ref _decodeSpeexBits);
short[] buffer = new short[160];
int len = SpeexDecodeApi.Speex_decode_int(_decodeStateIntptr, ref _decodeSpeexBits, buffer);
return(SpeexHelper.ShortsToBytes(buffer));
}
/// <summary>
/// 执行预处理
/// </summary>
/// <returns>预处理后的音频数据</returns>
public byte[] Run(byte[] input)
{
if (input == null || input.Length > _frameSize * 2)
{
throw new Exception($"值不能为空且每次压缩的数据大小不能超过{_frameSize * 2}个字节");
}
input = SpeexHelper.PadArr(input, _frameSize * 2);
short[] sShort = SpeexHelper.BytesToShorts(input);
int result = SpeexPreprocessApi.Speex_preprocess_run(preprocessMemAddress, sShort);
byte[] output = SpeexHelper.ShortsToBytes(sShort);
return(output);
}
