The function takes an opus_int32 *, but we were passing the address
 of an int, which might not be the same.
This is only likely to affect platforms with a 16-bit int.

Without this check, a DRED extension encoded with an invalid frame
 number would still be used, potentially with a surprisingly large
 dred_frame_offset.

With an 8+ MB packet it is possible to craft an extension length
 that would overflow, bypassing the checks to ensure the extension
 data remains inside the packet.
This patch fixes that and adds a test for it.

dvosully authored 1 year ago and Jean-Marc Valin committed 1 year ago

Signed-off-by: Jean-Marc Valin <jmvalin@jmvalin.ca>

Michael Klingbeil authored 1 year ago and Jean-Marc Valin committed 1 year ago

Signed-off-by: Jean-Marc Valin <jmvalin@jmvalin.ca>

Timothy B. Terriberry authored 1 year ago and Jean-Marc Valin committed 1 year ago

Since any value of dQ > 0 will cause the initial quantizer to
 degrade to the format-implied maximum (15) with a sufficient
 number of DRED frames, allow signaling a maximum smaller than 15.
This allows encoders to improve the minimum quality of long DRED
 sequences (at the expense of bitrate) without requiring a constant
 quantizer for all frames (dQ == 0).

Also, fix documentation about return value of zero.

Trying to add padding in-place breaks when we have extensions,
which causes a memcpy() with overlapping data. Just doing a
copy instead.

Chris Hold authored 1 year ago and Jean-Marc Valin committed 1 year ago

Signed-off-by: Jean-Marc Valin <jmvalin@jmvalin.ca>

Chris Hold authored 1 year ago and Jean-Marc Valin committed 1 year ago

Signed-off-by: Jean-Marc Valin <jmvalin@jmvalin.ca>

Allows us to exclude the most recent silence from DRED

Chris Hold authored 1 year ago and Jean-Marc Valin committed 1 year ago

Signed-off-by: Jean-Marc Valin <jmvalin@jmvalin.ca>

Thanks to Igor Palaguta for reporting the issue.
https://github.com/xiph/opus/issues/313

Same for opus_multistream_packet_unpad()

Forgot to account for padding length bytes when DRED payload is large.

luzpaz authored 1 year ago and Jean-Marc Valin committed 1 year ago

Found using `codespell -q 3 -L caf,highe,inlin,nd,ordert,shft`

Signed-off-by: Jean-Marc Valin <jmvalin@jmvalin.ca>

Rename, reindent, change arg order