The gradfun filter was already integrated natively in libavfilter.
Both filters issue the same output, and have a comparable performance.
See thread:
Subject: [FFmpeg-devel] [PATCH] lavfi: remove gradfun mp wrapper
Date: Fri, 5 Aug 2011 00:19:04 +0200
Previously both the buffer and buffersink elements were associated to
the "BUFFER" symbol in allfilters.c, so it was not possible to enable
one without the other.
void* pointer arithmetic semantics is undefined, use uint8_t* instead.
Also fix GCC warnings:
defaults.c: In function ‘set_common_formats’:
defaults.c:184: warning: pointer of type ‘void *’ used in arithmetic
defaults.c:189: warning: pointer of type ‘void *’ used in arithmetic
Update/extend documentation related to the link fields to set, and fix
a pads->filters braino.
Signed-off-by: Stefano Sabatini <stefano.sabatini-lala@poste.it>
Link properties have to be checked after config_props() is called to
make sure everything is sane, so the default config_props() for output
links was redundant.
Also remove channel_layout check as it is now negotiated.
Signed-off-by: Stefano Sabatini <stefano.sabatini-lala@poste.it>
Previously, "dar" and "a" were documented like "input display aspect
ratio", but their actual value was "in_w/in_h".
In order to avoid to break scripts which rely on the "a" variable, the
patch keeps the same semantics but fixes the corresponding docs, and
fixes the semantics of the recently added "dar" variable, which
now correctly expresses the input Display Aspect Ratio value as
"(inw_w/in_h)*sar".
avfilter_draw_slice() is already called in the end_frame() callback,
this avoids multiple calls. This is done by adding a null draw_slice()
callback.
In particular fix crash occurring with -vf transpose=3,hflip, fix trac
issue #371.
The licence was changed from GPL to LGPL with explicit approval from
the original author.
See thread:
Subject: [FFmpeg-devel] [PATCH] lavfi: add rgbtestsrc source,
ported from MPlayer libmpcodecs
Date: Mon, 11 Jul 2011 16:32:41 +0200
In particular creates a special test_init function, which calls a
common init, and introduces a fill_picture_fn which points to the
filling function.
This is required by the pending patch for adding the rgbtestsrc
source.
With the following additions:
* support to gray format
* support to yuva420p format
* parametric luma/chroma/alpha radius
* consistency check on the radius values, avoid crashes with invalid values
Declaring tools associated with each library in their respective
makefiles allows these tools to easily depend on the correct
prerequisites and link against the libs they need.
Signed-off-by: Mans Rullgard <mans@mansr.com>
Since avfilter_graph_parse() creates the "[in]" inout for the first
unlabelled input pad, it is expected that it will create an "[out]"
inout for last unlabelled output pad, even in the case where it cannot
find any open input pad with that name.
This change removes the check on the existence of an open input pad
named "out", so it simplifies the checked condition while implementing
a more intuitive behavior.
libavfilter/vf_drawtext.c:427:22: warning: variable 'dst_pixel' set but not used
libavfilter/vf_drawtext.c:463:22: warning: variable 'dst_pixel' set but not used
Create open_inputs and open_outputs structs if they are not provided by
the user, and free them before exit.
In particular, fix NULL pointer dereference and crash, in case the
passed open_inputs/outputs is NULL and the parsing failed.
Stefano Sabatini
William Yu
Mina Nagy Zaki
Joakim Plate
Michael Niedermayer
Diego Biurrun
Mans Rullgard
Anton Khirnov
Nicolas George
Loren Merritt