Avoid the need to implement slice direction detection code, thus
reducing code duplication.
See the thread:
"[FFmpeg-devel] [PATCH] Add a slice_dir parameter to avfilter_start_frame()".
Originally committed as revision 20734 to svn://svn.ffmpeg.org/ffmpeg/trunk
draw_slice().
The chroma values to use are supposed to be those of the input format,
not that of the output format, the latter case was causing crashes and
chroma issues.
Originally committed as revision 20660 to svn://svn.ffmpeg.org/ffmpeg/trunk
The assumption depends on the corresponding assumption done by
sws_scale() and by the scale filter.
Originally committed as revision 20655 to svn://svn.ffmpeg.org/ffmpeg/trunk
Create a new static array containing pointers to the AVFilter
definitions, so that the non-constant next filter in the AVFilter
struct is not anymore required and the AVFilter definitions may be
stored in shareable memory.
Also change the signature for avfilter_register(), make it return an
int since it may fail if there is not enough space in the static array
for the registered filters.
Originally committed as revision 20605 to svn://svn.ffmpeg.org/ffmpeg/trunk
not correctly supported.
See the thread:
"[FFmpeg-devel] [PATCH] Remove not truly supported formats support from the crop filter".
Originally committed as revision 20576 to svn://svn.ffmpeg.org/ffmpeg/trunk
avfilter_default_get_video_buffer() if the get_video_buffer() callback
is not defined in a filter.
Libavfilter filters author have to explicitely define the
get_video_buffer() callback if they want the buffer to be requested to
the filter following in the filterchain.
See the thread:
"[FFmpeg-devel] [PATCH] Make avfilter_get_video_buffer() use
default_get_video_buffer if callback not defined".
Originally committed as revision 20444 to svn://svn.ffmpeg.org/ffmpeg/trunk
"video format and noformat filters" to
"format and noformat video filters",
as suggested by Diego.
Originally committed as revision 20442 to svn://svn.ffmpeg.org/ffmpeg/trunk
That was never required since avfilter_get_video_buffer() already
calls itself on the next link if get_video_buffer is not defined.
Originally committed as revision 20419 to svn://svn.ffmpeg.org/ffmpeg/trunk
for registering and finding filters, rather than use the struct
AVFilterList, which is removed.
Simplify the filter registration management code.
Originally committed as revision 20387 to svn://svn.ffmpeg.org/ffmpeg/trunk
Simplify the registration and iteration of all the registered filters,
consistent with what is done with formats / codecs.
Originally committed as revision 20385 to svn://svn.ffmpeg.org/ffmpeg/trunk
argument of avfilter_make_format_list(), as the argument represents a
list of elements.
Originally committed as revision 20341 to svn://svn.ffmpeg.org/ffmpeg/trunk
avfilter_make_format_list().
See the thread:
"[PATCH] Implement avfilter_make_format_list2(enum PixelFormat pix_fmt, ...)".
Originally committed as revision 20299 to svn://svn.ffmpeg.org/ffmpeg/trunk
min = FFMIN(min, avfilter_poll_frame(link->src->inputs[i]))
which, since FFMIN is a macro, was calling itself
twice for every input, causing an exponential cost in time.
Originally committed as revision 20295 to svn://svn.ffmpeg.org/ffmpeg/trunk
When called on a link with a filter whose destination pad has not a
get_video_buffer callback defined, it will call
avfilter_get_video_buffer() on the first output link of the
destination filer, rather than use avfilter_default_get_buffer(), so
the video buffer can be allocated forward in the filterchain.
Also add the w and h parameters to avfilter_get_video_buffer(), as the
minimum width and height requested by each filter in the filterchain
may change, this allows for example a memcpy-less pad filter.
This change breaks API / ABI backward compatibility.
See the thread:
"[PATCH] Implement recusive avfilter_get_video_buffer()".
Originally committed as revision 20272 to svn://svn.ffmpeg.org/ffmpeg/trunk
