Signed-off-by: James Almer <jamrial@gmail.com>

This filter does not implement all features of MPEG7. Missing features:
- compression of signature files
- work only on (cropped) parts of the video

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Not used by anything at all since we don't auto insert lavr filters.

Reviewed-by: wm4 <nfxjfg@googlemail.com>
Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Add missing return value checks to suppress build warning and
remove noop ff_formats_unref() calling.

Note: most filters using ff_formats_ref() didn't have a suitable
error handling, it's a potential memory leak issue.

Signed-off-by: Jun Zhao <jun.zhao@intel.com>
Signed-off-by: Mark Thompson <sw@jkqxz.net>

This merges libav commit ac7bfd69678f3966e38debdb27f4bde94dc0345c,
which was previously skipped.

(cherry picked from commit ac7bfd6967)
Signed-off-by: Mark Thompson <sw@jkqxz.net>

slightly improved speed

Reviewed-by: wm4 <nfxjfg@googlemail.com>
Signed-off-by: Muhammad Faiz <mfcc64@gmail.com>

The 'sqrt' and 'cbrt' scalers were added in commit
80262d8c86e94ff9a4bb3a9e3c2d734e04ccb399, but their symbolic option values
only made available to the showwaves filter, not showwavespic, despite
the scalers working properly by their numerical option values.

Signed-off-by: Moritz Barsnick <barsnick@gmx.net>

use ff_thread_once

Suggested-by: wm4 <nfxjfg@googlemail.com>
Signed-off-by: Muhammad Faiz <mfcc64@gmail.com>

Fixes #6181.

Signed-off-by: Paul B Mahol <onemda@gmail.com>

(cherry picked from commit ade370a4d7)
(cherry picked from commit 2d518aec4c)

When setting the channel layout directly using AVBufferSrcParameters
the channel layout was correctly set however the init function still
expected the old string format to set the number of channels (when it
hadn't already been specified).

Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>

ticket #6157

Reported-by: Steven Liu <lq@chinaffmpeg.org>
Signed-off-by: Pavel Koshevoy <pkoshevoy@gmail.com>

Fixes Coverity CID 1396259.

Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Marton Balint <cus@passwd.hu>

Previous behavior was not useful at all as such pixels where all mapped to 0.

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Old behaviour was not useful at all. New behaviour only emulate
old behaviour with default options.

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Fixes Coverity CID 1396254.

Signed-off-by: Marton Balint <cus@passwd.hu>

Fixes CID 1374119.

This reworks the code a bit and also disallows NULL contexts.

Fixes Coverity CID 1396273, 1396279.

Signed-off-by: Marton Balint <cus@passwd.hu>

The user should supply a proper context.

Fixes Coverity CID 1396246.

Signed-off-by: Marton Balint <cus@passwd.hu>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Fixes memleak
Fixes part of CID1197065

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Fixes memleak
Fixes part of CID1197065

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Fixes memleak
Fixes part of CID1197065

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Fixes memleak
Fixes part of CID1197065

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Fixes memleak
Fixes part of CID1197065

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Implements support for height/width expressions in vf_scale_vaapi,
by refactoring common code into a new libavfilter/scale.c

Signed-off-by: Mark Thompson <sw@jkqxz.net>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

high basefreq does not require high timeclamp

Signed-off-by: Muhammad Faiz <mfcc64@gmail.com>

Instead of just updating statistics and leaving the work to the
call site, have it actually do the work.

Also: skip the samples by updating the frame data pointers
instead of moving the samples. More efficient and avoid writing
into shared frames.
Found-By: Muhammad Faiz <mfcc64@gmail.com>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Fixes CID1396252

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Make sure no division by zero is done.
Make sure there are actually samples available.

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Current code returned the number of channels as channel layout in that case,
and if nret is not set then unknown layouts are typically not supported.

Also use the common parsing code. Use a temporary workaround to parse an
unknown channel layout such as '13c', after a 1 year grace period only '13C'
will work.

Signed-off-by: Marton Balint <cus@passwd.hu>

Signed-off-by: Dave Rice <dave@dericed.com>
Signed-off-by: Paul B Mahol <onemda@gmail.com>

Fixes CID1396265

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Fixes CID1396261

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Fixes CID1270818

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Fixes CID1397292

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

add line_spacing parameter to set the space between two lines

Based on an idea by: Leandro Santiago <leandrosansilva@gmail.com>
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Steven Liu <lq@chinaffmpeg.org>

Hopefully fix compilation with suncc.