Hi All,
I have found an issue with the GSM codec and a device that
sent multiple frames in a single RTP packet (which is valid).
The plug-in will return an error if the coded packet size
was not equal to 33 (a single 20 millisecond frame).
Attached is a patch that fixes this so that
it can cope with more than a single frame in a packet.
It still checks to ensure the packet contains a multiple of 33 bytes.
Enjoy.
--
Regards
Paul Whitfield
Software Engineer
15 Hector St Osborne Park
Perth WA 6017
P: +61 8 9445 2633
F: +61 8 9445 1687
I: www.omnitronics.com.au <http://www.omnitronics.com.au>
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122,126d121
< gsm_byte *pIn = (gsm_byte * ) pCodedData;
< gsm_signal *pOut = ( gsm_signal * ) pAudioBuffer;
< unsigned outSize = ( cbCodedPacketSize / 33 ) * 160;
< unsigned remaining = cbCodedPacketSize;
<
129c124
< if ( (cbCodedPacketSize % 33) != 0 )
---
> if (cbCodedPacketSize != 33)
134c129
< if (cbBufferSize < outSize )
---
> if (cbBufferSize < 160)
139,147c134,135
< while ( remaining > 0 )
< {
< gsm_decode(mpGsm->mpGsmState, pIn, pOut);
< pIn += 33;
< pOut +=160;
< remaining -= 33;
< }
<
< *pcbDecodedSize = outSize;
---
> gsm_decode(mpGsm->mpGsmState, (gsm_byte*)pCodedData,
> (gsm_signal*)pAudioBuffer);
> *pcbDecodedSize = 160;
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