rawmidi: hide the frame structure using a decoder function

[GitHub pull_request - opened]

alsa-project/alsa-lib pull request #173 was opened from perexg:

The frame structure should be hidden. Remove it and add
snd_rawmidi_decode_frame0() which returns the timestamp
and the midi chunk pointer to the application.

BugLink: https://github.com/alsa-project/alsa-lib/issues/172

Request URL   : https://github.com/alsa-project/alsa-lib/pull/173
Patch URL     : https://github.com/alsa-project/alsa-lib/pull/173.patch
Repository URL: https://github.com/alsa-project/alsa-lib