diff options
| author | Daniil Cherednik <dan.cherednik@gmail.com> | 2025-08-20 21:29:42 +0200 |
|---|---|---|
| committer | michaelni <michael@niedermayer.cc> | 2025-08-29 12:29:52 +0000 |
| commit | 0828a3b6366042a2d65188c89a1f5bf0ae52ec75 (patch) | |
| tree | c3605f55da214cdbf9855533c7ad8d48761982c1 /tools/python | |
| parent | e3f01682d77679397593656b741d98503ceb6d4b (diff) | |
| download | ffmpeg-0828a3b6366042a2d65188c89a1f5bf0ae52ec75.tar.gz | |
avcodec/atrac3: fix inconsistent band num calculation
'decode_spectrum' reads 5 bits from bitstream to get
number of encoded subbands – so 31 means all 32
subbands are encoded. This value also is used to
determinate the number of used band in the hybrid
filterbank.
'subband_tab' array contains 33 values of MDCT spec
line positions started from 0 line and used to map
subband number in to the range of mdct lines.
Since the subband_num returned by decode_spectrum
actually is number – 1 and subband_tab started from 0
we need to add 1 to make num_bands calculation correct.
Diffstat (limited to 'tools/python')
0 files changed, 0 insertions, 0 deletions