[FFmpeg-trac] #5862(avcodec:new): A clipping value of ADPCM is different from specifications.
FFmpeg
trac at avcodec.org
Sun Sep 25 10:33:32 EEST 2016
#5862: A clipping value of ADPCM is different from specifications.
-------------------------------------+-------------------------------------
Reporter: | Type: defect
kei_kissinger | Priority: normal
Status: new | Version: git-
Component: avcodec | master
Keywords: ADPCM 24567 | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
source code: adpcm.c
function: adpcm_yamaha_expand_nibble
line: c->step = av_clip(c->step, 127, 24567);
fail: 24567 must be 24576.
reference about specification:
http://nemesis.hacking-cult.org/MegaDrive/Documentation/YM2608J.PDF --
scanned image in japanese. page 44 (5)
http://nemesis.hacking-
cult.org/MegaDrive/Documentation/YM2608J%20Translated.PDF -- translated
into English. page 44 (5)
also another dokument,
http://www.dtech.lv/files_ym/ym2610.pdf page 6 und 7
Thank you.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/5862>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker
More information about the FFmpeg-trac
mailing list