Re: [PATCH 4/4] audio: Add check for non-a2dp codec

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Hi Marcel,

On Thu, Oct 4, 2012 at 9:08 PM, Marcel Holtmann <marcel@xxxxxxxxxxxx> wrote:
> Hi Luiz,
>
>> > This patch adds checks(vendor ID, vendor specific codec ID) to make sure of
>> > non-a2dp codec selection.
>> > ---
>> >  audio/a2dp-codecs.h |    6 +++++
>> >  audio/a2dp.c        |   68 ++++++++++++++++++++++++++++++++++++++++++++++++++-
>> >  2 files changed, 73 insertions(+), 1 deletion(-)
>> >
>> > diff --git a/audio/a2dp-codecs.h b/audio/a2dp-codecs.h
>> > index 51c796a..e3d2cba 100644
>> > --- a/audio/a2dp-codecs.h
>> > +++ b/audio/a2dp-codecs.h
>> > @@ -26,6 +26,7 @@
>> >  #define A2DP_CODEC_MPEG12              0x01
>> >  #define A2DP_CODEC_MPEG24              0x02
>> >  #define A2DP_CODEC_ATRAC               0x03
>> > +#define A2DP_CODEC_NON_A2DP            0xFF
>>
>> I prefer A2DP_CODEC_VENDOR
>
> what is the specification calling these? And yes, I would prefer VENDOR
> as well.

Apparently it comes from the assigned numbers
http://www.bluetooth.org/Technical/AssignedNumbers/audio-video.htm:

1	1	1	1	1	1	1	1	non-A2DP	n/a	A2DP

But the spec refer to it as 4.7 Vendor Specific A2DP Codec, IMO the
term non-A2DP can be confused with not defined in A2DP spec when in
fact it is defined:

"4.2.3 Vendor Specific A2DP Codecs
The device may support other codecs as Vendor Specific A2DP codecs. A
user of a Vendor Specific A2DP codec (hereafter the Vendor) will need
to define parameters and other information necessary for use of the
codec in A2DP."

There is no such a thing as non-A2DP in the spec, so again to avoid
confusion I would stick to the terminology vendor or vendor specific.

-- 
Luiz Augusto von Dentz
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