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<p class=MsoNormal><span lang=IT>Hi.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=IT><o:p> </o:p></span></p>
<p class=MsoNormal>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.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Here’s the sequence of calls:<o:p></o:p></p>
<p class=MsoNormal> //Initialization<o:p></o:p></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'> _Mode =
speex_lib_get_mode(0);<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'> _State =
speex_encoder_init(_Mode);<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'><o:p> </o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'> <span
style='color:blue'>fixed</span> (<span style='color:blue'>int</span>*
__FrameSize = &_FrameSize, __Complexity = &_Complexity, __SamplingRate
= &_SamplingRate)<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'> {<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'>
speex_encoder_ctl(_State, 3 <span style='color:green'>/*SPEEX_GET_FRAME_SIZE*/</span>,
__FrameSize);<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'>
speex_encoder_ctl(_State, 16 <span style='color:green'>/*SPEEX_SET_COMPLEXITY*/</span>,
__Complexity);<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'> speex_encoder_ctl(_State,
24 <span style='color:green'>/*SPEEX_SET_SAMPLING_RATE*/</span>,
__SamplingRate);<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'> }<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'><o:p> </o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'> _Bits = <span
style='color:blue'>new</span> <span style='color:#2B91AF'>SpeexBits</span>();<o:p></o:p></span></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>//Data encoding<o:p></o:p></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'> <span style='color:blue'>public</span>
<span style='color:blue'>byte</span>[] ProcessData(<span style='color:blue'>byte</span>[]
ABuffer, <span style='color:blue'>int</span> ADataSize)<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'> {<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'> <span
style='color:blue'>int</span> OutputDataSize;<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'> <span
style='color:blue'>short</span>[] TempData = <span style='color:blue'>new</span>
<span style='color:blue'>short</span>[ADataSize];<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'> <span
style='color:blue'>for</span> (<span style='color:blue'>int</span> Index =
ADataSize-1; Index >= 0; Index--)<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'>
TempData[Index] = (<span style='color:blue'>short</span>)((ABuffer[Index]
<< 8) ^ 0x8000); <o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'><o:p> </o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'> <span
style='color:blue'>fixed</span> (<span style='color:blue'>short</span>*
__TempData = &TempData[0])<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'> {<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'> <span
style='color:blue'>fixed</span> (<span style='color:blue'>void</span>* __Bits =
&_Bits)<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'> {<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'>
<span style='color:blue'>if</span> (speex_encode_int(_State, __TempData,
__Bits) == 1)<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'>
{<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'>
<span style='color:blue'>fixed</span> (<span style='color:blue'>void</span>*
__Buffer = _Buffer)<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'>
OutputDataSize = speex_bits_write(__Bits, __Buffer, _Buffer.Length);<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'>
speex_bits_reset(__Bits);<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'>
}<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'>
<span style='color:blue'>else<o:p></o:p></span></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'>
<span style='color:blue'>return</span> <span style='color:blue'>null</span>;<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'> }<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'> }<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'> <span
style='color:blue'>byte</span>[] Result = <span style='color:blue'>new</span> <span
style='color:blue'>byte</span>[OutputDataSize];<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'> <span
style='color:blue'>for</span> (<span style='color:blue'>int</span> Index = 0;
Index < OutputDataSize; Index++)<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'>
Result[Index] = (<span style='color:blue'>byte</span>)(_Buffer[Index] >>
8);<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'> <span
style='color:blue'>return</span> Result;<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'> }<o:p></o:p></span></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Thank you in advance.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Regards,<o:p></o:p></p>
<p class=MsoNormal> Andrew.<o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>Andrea Laperuta</span><span
style='font-size:12.0pt;font-family:"Times New Roman","serif"'> </span><span
style='font-size:10.0pt;font-family:"Verdana","sans-serif"'><br>
</span><i><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>Solution
Architect & Team Leader</span></i><span style='font-size:12.0pt;font-family:
"Times New Roman","serif"'><o:p></o:p></span></p>
<p class=MsoNormal><br>
<b><span lang=IT style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>DigInt
Srl</span></b><b><span lang=IT style='font-size:10.0pt;font-family:"Verdana","sans-serif"'><o:p></o:p></span></b></p>
<p class=MsoNormal><span lang=IT style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>Via
Dei Pioppi n. 18/A<br>
20024 Garbagnate Milanese (MI)<br>
Tel. </span><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>+39
0299020206<br>
Fax. +39 029958518<br>
web:</span> <a href="http://www.ikon-corp.it/"><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif";color:blue'>www.digint.it</span></a><br>
<span lang=IT style='font-size:7.5pt;font-family:Wingdings'>* </span><span
lang=IT style='font-size:10.0pt;font-family:"Verdana","sans-serif"'><a
href="mailto:andrea.laperuta@ikon-corp.it"><span lang=EN-US style='color:blue'>andrea.laperuta@digint.it</span></a></span><o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
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<P><FONT SIZE=2>No virus found in this outgoing message.<BR>
Checked by AVG Free Edition.<BR>
Version: 7.5.488 / Virus Database: 269.14.6/1060 - Release Date: 09/10/2007 16.43<BR>
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