mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-23 12:43:46 +02:00
2f62a433f2
Lots of video filters use a very simple input or output: An array with a single AVFilterPad whose name is "default" and whose type is AVMEDIA_TYPE_VIDEO; everything else is unset. Given that we never use pointer equality for inputs or outputs*, we can simply use a single AVFilterPad instead of dozens; this even saves .data.rel.ro (8312B here) as well as relocations. *: In fact, several filters (like the filters in vf_lut.c) already use the same outputs; furthermore, ff_filter_alloc() duplicates the input and output pads so that we do not even work with the pads directly. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
49 lines
1.7 KiB
C
49 lines
1.7 KiB
C
/*
|
|
* Copyright (c) 2007 Bobby Bingham
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#ifndef AVFILTER_VIDEO_H
|
|
#define AVFILTER_VIDEO_H
|
|
|
|
#include "avfilter.h"
|
|
#include "internal.h"
|
|
|
|
/**
|
|
* An AVFilterPad array whose only entry has name "default"
|
|
* and is of type AVMEDIA_TYPE_VIDEO.
|
|
*/
|
|
extern const AVFilterPad ff_video_default_filterpad[1];
|
|
|
|
AVFrame *ff_default_get_video_buffer(AVFilterLink *link, int w, int h);
|
|
AVFrame *ff_default_get_video_buffer2(AVFilterLink *link, int w, int h, int align);
|
|
AVFrame *ff_null_get_video_buffer(AVFilterLink *link, int w, int h);
|
|
|
|
/**
|
|
* Request a picture buffer with a specific set of permissions.
|
|
*
|
|
* @param link the output link to the filter from which the buffer will
|
|
* be requested
|
|
* @param w the minimum width of the buffer to allocate
|
|
* @param h the minimum height of the buffer to allocate
|
|
* @return on success, an AVFrame owned by the caller, NULL on error
|
|
*/
|
|
AVFrame *ff_get_video_buffer(AVFilterLink *link, int w, int h);
|
|
|
|
#endif /* AVFILTER_VIDEO_H */
|