Make the filter accept parametric expressions for the output video
size.
Signed-off-by: Stefano Sabatini <stefano.sabatini-lala@poste.it>
Signed-off-by: Anton Khirnov <anton@khirnov.net>
draw_slice() checks that the fade factor is < 65536 and only
calculates the fade if so. But the fade factor is clipped in
end_frame() by av_clip_uint16() to 65535, so the fade is calculated
for every frame. This patch alters the check so that it compares with
< 65535 (UINT16_MAX).
Signed-off-by: Anton Khirnov <anton@khirnov.net>
draw_slice() checks that planes 0 and 1 of AVFilterBufferRef's data
are not NULL before manipulating planes 1 and 2. This patch makes the
check against planes 1 and 2. More senseful and possibly more robust.
Signed-off-by: Anton Khirnov <anton@khirnov.net>
Port fade filter from libavfilter soc repo, with minor fixes by
Stefano.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Anton Khirnov <anton@khirnov.net>
This fixes compilation with preprocessors which do not add whitespace
around replaced tokens, resulting in invalid expressions like 1--1.
Signed-off-by: Mans Rullgard <mans@mansr.com>
Add drawutils.h and drawutils.c, and use them in the pad filter.
The new functions are going to be shared by other filters.
Signed-off-by: Mans Rullgard <mans@mansr.com>
It is pretty hopeless that other considerable projects will adopt
libavutil alone in other projects. Projects that need small footprint
are better off with more specialized libraries such as gnulib or rather
just copy the necessary parts that they need. With this in mind, nobody
is helped by having libavutil and libavcore split. In order to ease
maintenance inside and around FFmpeg and to reduce confusion where to
put common code, avcore's functionality is merged (back) to avutil.
Signed-off-by: Reinhard Tartler <siretart@tauware.de>
Make avfilter_graph_free() free not only the internal structures, but
also the allocated graph, and set the graph pointer to NULL for
increased safety.
Simplify usage.
Signed-off-by: Mans Rullgard <mans@mansr.com>
Make avfilter_graph_parse() only release the internal structures
allocated during the parsing, and leave to free the graph itself to
the calling code.
This approach looks cleaner, as the graph is not allocated by the
function.
Signed-off-by: Mans Rullgard <mans@mansr.com>
That's required because -1 is evaluated as NAN, which converted back
to int looks like a random number, this is especially annoying when
debugging sources with undefined pos (as the video4linux2 device).
Signed-off-by: Janne Grunau <janne-ffmpeg@jannau.net>
This removes ff_get_ref_perms_string, ff_dprintf_ref and ff_dprintf_link
fro the interface of libavfilter.
Signed-off-by: Mans Rullgard <mans@mansr.com>
libavfilter/defaults.c: In function 'avfilter_default_get_audio_buffer':
libavfilter/defaults.c:129: warning: 'buf' is used uninitialized in this function
Originally committed as revision 26382 to svn://svn.ffmpeg.org/ffmpeg/trunk
More consistent with the rest of FFmpeg and sounds more natural to
English speaking people.
Originally committed as revision 26374 to svn://svn.ffmpeg.org/ffmpeg/trunk
Previously the pad filter just drawed borders in the surrounding of the input
without checking if this area was allocated or writeable. Now we check and
allocate a new buffer if the input is unsuitable.
Originally committed as revision 26315 to svn://svn.ffmpeg.org/ffmpeg/trunk
These fields are needed to be able to know which area of memory is allocated and
which is off limits.
This reverts 24291 and parts of r24424.
Originally committed as revision 26314 to svn://svn.ffmpeg.org/ffmpeg/trunk
evaluated crop area coordinates.
Prevent debug log spamming, define the DEBUG symbol for enabling them.
Originally committed as revision 26110 to svn://svn.ffmpeg.org/ffmpeg/trunk
FILTERNAME=ARGS and FILTERNAME:ARGS syntax.
The same filter class will be used for managing all the libopencv
filtering functions.
Originally committed as revision 26079 to svn://svn.ffmpeg.org/ffmpeg/trunk
commit ab8610aa176c13b5e25a2d8770df28a14665e169
Author: koorogi <koorogi@9553f0bf-9b14-0410-a0b8-cfaf0461ba5b>
Date: Thu Mar 18 23:13:04 2010 +0000
The vflip filter does not need to keep ownership of a picture reference.
Avoid creating and releasing useless extra picture references in the
start_frame and end_frame callbacks.
Originally committed as revision 22596 to svn://svn.ffmpeg.org/ffmpeg/trunk
The new reference creation is required when the linesizes are used by the
previous filters in the filterchain, for example as in "pad=W:H:X:Y,vflip".
Originally committed as revision 26059 to svn://svn.ffmpeg.org/ffmpeg/trunk
Patch by Nolan L nol888 <=> gmail >=< com.
See thread:
Subject: [FFmpeg-devel] [PATCH] Port gradfun to libavfilter (GCI)
Date: Mon, 29 Nov 2010 07:18:14 -0500
Originally committed as revision 25942 to svn://svn.ffmpeg.org/ffmpeg/trunk
libavcodec to libavcore.
Remove another compile-time dependancy of libavfilter on libavcodec.
Originally committed as revision 25923 to svn://svn.ffmpeg.org/ffmpeg/trunk
Make it accept the frei0r=filtername=params as alternative to
frei0r=filtername:params.
Originally committed as revision 25856 to svn://svn.ffmpeg.org/ffmpeg/trunk
Compute the outpicref PTS in start_frame(), since it is required for
comparing that value with the value of the overpicref.
Originally committed as revision 25828 to svn://svn.ffmpeg.org/ffmpeg/trunk
Fix issue #2269.
Interpolate pts for the second frame when using field output mode.
Originally committed as revision 25798 to svn://svn.ffmpeg.org/ffmpeg/trunk
This also allows to remove a linking dependency of libavfilter on
libavcodec.
Originally committed as revision 25789 to svn://svn.ffmpeg.org/ffmpeg/trunk
AV_PERM_REUSE and AV_PERM_REUSE2 flags, avoid conflict with the char
'r' used for AV_PERM_READ.
Originally committed as revision 25739 to svn://svn.ffmpeg.org/ffmpeg/trunk
ff_avfilter_graph_check_validity()
ff_avfilter_graph_config_links()
ff_avfilter_graph_config_formats()
and move their declaration to internal.h. These functions are never
used in application code, so it is better to consider them internal
functions, this can be changed later if necessary. Simplify API.
Originally committed as revision 25737 to svn://svn.ffmpeg.org/ffmpeg/trunk
