I am using the latest android images on VIM4 from OOWOW and trying to play dolby audio based mp4 file. However from the logs i found that VIM4 audio hal is not loading dolby ms12 library.
On further debugging it seems that the utility fails decrypt dolbyms12 library.
VIM4:/ # cat /vendor/etc/init/dolby_fw_dolbyms12.rc
VIM4:/ # /vendor/bin/dolby_fw_dolbyms12 /odm/etc/ms12/libdolbyms12.so /odm/lib/ms12/libdolbyms12.so
sig error value: 132
so signature check fail!
Can you please provide how to resolve this and play a dolby decoded audio on VIM4.
@Krupal Can you send me your audio files?
@goenjoy I am using the sample dolby audio files from this link.
@Krupal Our CPU chip version does not support dolby.
@goenjoy Thanks for the checking it out. Can you please help me know how to check which CPU/SoC supports dolby?
A311D2 reference manual mentions that it has Dolby support (optional).
Yes, the SoC shipped on VIM4 doesn’t support Dolby.
We need a special lic code from Amlogic placed into OTP for DSP activation. Am I correct?
If this addressed to me, then I use linux from scratch with RT core. I will never use DSP for HiFi, but possibly want to use it for realtime audio communication noise canceling / trill enhancement if this possible.