[Bug 783583] aacparse: wrong src caps profile for ADIF format aac clips

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=783583

--- Comment #3 from Lyon <lyon.wang at nxp.com> ---
yes, I see in gstaacparse.c,  the channel / sample rate index / object type
will be packaged as codec_data (AudioSpecificConfig) and then parse in
gst_codec_uitls_aac_*_profile. (which deal with as above 3rd case)

Also for ADTS type file, in gst_aac_parse_parse_adts_header(above 1st case),
the object_type got will convert to the 3rd case by plus 1 (*object = ((data[2]
& 0xc0) >> 6) + 1;)

So similar as ADTS file format,  for ADIF format (above 1st case), the
object_type got also need plus 1 to convert to above 3rd case:
      aacparse->object_type = (((adif[6 + skip_size] & 0x01) << 1) |
          ((adif[7 + skip_size] & 0x80) >> 7)) + 1;

That's what I suggested in the patch.

And in gst_codec_utils_aac_*_profile(), it can get the correct profile.

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