[pulseaudio-discuss] Bluetooth aptX codec

[ValdikSS]

On 09.08.2018 16:39, ValdikSS wrote:
> On 06.07.2018 13:25, Pali Rohár wrote:
>> I did some investigation and basically this is the list of all known
>> codecs used in A2DP:
>>
>> Mandatory:
>> 0x00 - SBC
>>
>> Optional:
>> 0x01 - MPEG-1,2 (aka MP3)
>> 0x02 - MPEG-2,4 (aka AAC)
>> 0x04 - ATRAC
>>
>> Vendor specific:
>> 0xFF 0x004F 0x01 - aptX
>> 0xFF 0x000A 0x01 - FastStream
>> 0xFF 0x000A 0x02 - aptX Low Latency
>> 0xFF 0x00D7 0x24 - aptX HD
>> 0xFF 0x012D 0xAA - LDAC
>>
>> And also I found some references that some sort of raw 16bit PCM samples
>> via codec id 0x05 are used... But I have never seen such product.
>>
> Could it be Samsung UHQ-BT?
> https://www.samsung.com/uk/mobile-accessories/level-on-pro-wireless-headset-pn920/EO-PN920CFEGWW/
>
> There are also:
> 0xFF 0x0075 0x0102 — Samsung HD (found on Samsung LEVEL Link)
> Value hex dump: 7a
>
> 0xFF 0x000A 0x0103 — Unknown codec found on Bose QuietComfort QC35 II
> Value hex dump: 07 06 00 00 ff ff 02 35
>
> 0xFF 0x000A 0x0104 — Unknown codec found on Bose QuietComfort QC35 II
> Value hex dump: 07 08 00 02 c0 ff 8c 84 e2 00
>
>
> Samsung LEVEL on/on pro also have support for what Samsung call "Scalable Codec".

0xFF 0x000A 0x0106 — Unknown codec found on LEVN SK-BTI-031 bluetooth receiver
Value hex dump: 07 09 00 ff 4f 00 00 00 01 00 32

This receiver also supports unknown codecs 0x0103 and 0x0104 with the same values as shown in previous message.