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| author | Andreas Rheinhardt <andreas.rheinhardt@gmail.com> | 2019-05-22 03:04:32 +0200 |
|---|---|---|
| committer | James Almer <jamrial@gmail.com> | 2019-07-21 01:05:24 -0300 |
| commit | b010caa6c9e85657c2032046773cb1a816a5b1da (patch) | |
| tree | 1bccd82e27abeb3f9c828c0fafd1408b46978d7a /libavdevice/dshow_enumpins.c | |
| parent | ae5c80b9cae8716085eaacd887c28378ae99233b (diff) | |
| download | ffmpeg-b010caa6c9e85657c2032046773cb1a816a5b1da.tar.gz | |
cbs_mpeg2: Improve checks for invalid values
MPEG-2 contains several elements that mustn't be zero according to the
specifications: horizontal/vertical_size_value, aspect_ratio_information,
frame_rate_code, the quantiser matrices, the colour_description
elements, picture_coding_type, the f_code[r][s] values and
quantiser_scale_code. It is now checked that the invalid values don't
occur.
The colour_description elements are treated specially in this regard:
Given that there are files in the wild which use illegal values for the
colour_description elements (some of them created by mpeg2_metadata),
they will be corrected to the value meaning "unknown" (namely 2) during
reading. This has been done in such a way that trace_headers will
nevertheless report the original value, together with a message about
the fixup.
Furthermore, the trace_headers output of user_data has been beautified.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
(cherry picked from commit 9c3f2a8894a66d6b5b9285caa25f91fbfca7b3bc)
Diffstat (limited to 'libavdevice/dshow_enumpins.c')
0 files changed, 0 insertions, 0 deletions