[Asterisk-Users] Codec Formats

[Jeremy McNamara]

Binary mathematics....  You can think of  1<<5  as 2 to the 5th power.

1<<0 be 1
1<<1 be 2
1<<2 be 4
1<<3 be 8
1<<4 be 16
1<<5 be 32


Perhaps there might need to be a slightly more friendly message, but 
remember its just a debug message.



Jeremy McNamara


John Vozza wrote:

>Thanks for the feedback but I'm still lost on this one.... (Forgive my
>ignorance please)
>
>I don't understand how "#define AST_FORMAT_ADPCM        (1 << 5)" becomes
>a "format =  32" in the * console display.
>
>Regards
>
>John
>-------------------------------------------------------------------------
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>
>On Fri, 14 Mar 2003, Martin Pycko wrote:
>
>  
>
>>The formats that asterisk uses are #define'd in
>>asterisk/include/asterisk/frame.h
>>
>>RTP formats are #define'd in asterisk/rtp.c
>>
>>regards
>>Martin
>>
>>On Fri, 14 Mar 2003, John Vozza wrote:
>>
>>    
>>
>>>I've been trying to find a list of codec "format numbers" so I can more
>>>clearly understand the following message;
>>>
>>>Accepting AUTHENTICATED call from xxx.xxx.xxx.xxx, requested format = 4,
>>>actual format = 4
>>>
>>>I've seen 4, 32, 512 and I think a few others. For example I think format
>>>32 equal ADPCM but what are the others?
>>>
>>>TIA
>>>
>>>      
>>>
>
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