[Speex-dev] encode return 0

[Andrea Laperuta]

Hi.

 

I’m trying to use the speex library in c#, everything seems to works right,
when I call the speex_encode_int function it always return 0, any help would
be appreciated.

 

Here’s the sequence of calls:

                //Initialization

      _Mode = speex_lib_get_mode(0);

      _State = speex_encoder_init(_Mode);

 

      fixed (int* __FrameSize = &_FrameSize, __Complexity = &_Complexity,
__SamplingRate = &_SamplingRate)

      {

        speex_encoder_ctl(_State, 3 /*SPEEX_GET_FRAME_SIZE*/, __FrameSize);

        speex_encoder_ctl(_State, 16 /*SPEEX_SET_COMPLEXITY*/,
__Complexity);

        speex_encoder_ctl(_State, 24 /*SPEEX_SET_SAMPLING_RATE*/,
__SamplingRate);

      }

 

      _Bits = new SpeexBits();

 

//Data encoding

    public byte[] ProcessData(byte[] ABuffer, int ADataSize)

    {

      int OutputDataSize;

      short[] TempData = new short[ADataSize];

      for (int Index = ADataSize-1; Index >= 0; Index--)

        TempData[Index] = (short)((ABuffer[Index] << 8) ^ 0x8000);      

 

      fixed (short* __TempData = &TempData[0])

      {

        fixed (void* __Bits = &_Bits)

        {

          if (speex_encode_int(_State, __TempData, __Bits) == 1)

          {

            fixed (void* __Buffer = _Buffer)

              OutputDataSize = speex_bits_write(__Bits, __Buffer,
_Buffer.Length);

            speex_bits_reset(__Bits);

          }

          else

            return null;

        }

      }

      byte[] Result = new byte[OutputDataSize];

      for (int Index = 0; Index < OutputDataSize; Index++)

        Result[Index] = (byte)(_Buffer[Index] >> 8);

      return Result;

    }

 

 

Thank you in advance.

 

Regards,

   Andrew.

Andrea Laperuta 
Solution Architect & Team Leader


DigInt Srl

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* HYPERLINK "mailto:andrea.laperuta at ikon-corp.it"andrea.laperuta at digint.it

 


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