[Speex-dev] Speex Windows from 1.1.6 source

[Jean-Marc Valin]

Same answer as anyone else: start from the sampleenc/sampledec examples
in the manual.

	Jean-Marc

Le mercredi 20 juillet 2005 à 15:41 -0500, Palani Selvam a écrit :
> Hi All,
> 
> I am using Speex for encoding/decoding the audio stream for 
> my streaming application. I have used almost the same code 
> In the sampleenc.c and sampledec.c, except that I have used 
> The buffers from the mic as input for encoder and encoded audio 
> As input for decoder, instead of files input.
> 
> My Problem is the audio played on the receiving side after decoding 
> Is only a "hush" or it is pure noise. 
> 
> Below is my code, that I have used for encoding and decoding. 
> 
>    /************** Encode ******************/ 
>      speex_bits_reset(&Encbits); 
>      psInput = (short *)InputBuf; 
>      iIndex = 80;
> 
>     memset(OutputBuf,0,(200 * sizeof(float)));
> 
>     /*Copy the 16 bits values to float so Speex can work on them*/ 
>      for (i=0;i<iIndex;i++){ 
>          /* float */pfEncBuf[i]=/* short */psInput[i];   
>      }
> 
>     /*Encode the frame*/ 
>     speex_encode(encState,pfEncBuf, &Encbits);
> 
>      memset(OutputBuf,0,outputSize);
> 
>      /*Copy the bits to an array of char that can be written*/ 
>      iEncBytes = speex_bits_write(&Encbits, OutputBuf, outputSize); 
>     return iEncBytes; 
>       
>     
> /**************** Decode ******************/
> 
>     /*  Flush all the bits in the struct so we can code a new frame
> */ 
>     speex_bits_reset(&Decbits);
> 
>     /*  Copy the data into the bit-stream struct  */ 
>     speex_bits_read_from(&Decbits, InputBuf, InputSize);
> 
>     /* Get the Size of the Decoded Frame */ 
>     speex_decoder_ctl(decState, SPEEX_GET_FRAME_SIZE, &iDecBytes); 
>     if(iIndex > outputSize) 
>                 return -1; 
>     iIndex = iDecBytes/sizeof(short);
> 
>     /* Allocate the Decode Frame */ 
>     memset(pfDecBuf,0,sizeof(200 * sizeof(float)));
> 
>     /*  Decode the data  */ 
>     speex_decode(decState, &Decbits, pfDecBuf);
> 
>     memset(OutputBuf,0,outputSize); 
>     psOutput = (short *)OutputBuf;
> 
>     /*  Copy from float to short (16 bits) for output  */ 
>     for (i=0;i<iIndex;i++) 
>        psOutput[i]=(short) pfDecBuf[i]; 
>     return iDecBytes;
> 
> 
> I tried encoding, decoding and playing on the 
> Same , the results are the same. I am not sure 
> If I am missing something here.Any Light on this is  
> much appreciated.
> 
> Thanx, 
> Palani.
> 
> _______________________________________________
> Speex-dev mailing list
> Speex-dev at xiph.org
> http://lists.xiph.org/mailman/listinfo/speex-dev
-- 
Jean-Marc Valin <Jean-Marc.Valin at USherbrooke.ca>
Université de Sherbrooke