[pulseaudio-discuss] Bluetooth aptX codec

[ValdikSS]

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".