2 * Copyright (c) 2002 Michael Niedermayer <michaelni@gmx.at>
4 * This file is part of FFmpeg.
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
26 #include "libavutil/pixdesc.h"
27 #include "libavutil/version.h"
33 static void do_swap(AVFrame *frame)
35 FFSWAP(uint8_t*, frame->data[1], frame->data[2]);
36 FFSWAP(int, frame->linesize[1], frame->linesize[2]);
37 FFSWAP(AVBufferRef*, frame->buf[1], frame->buf[2]);
39 #if FF_API_ERROR_FRAME
40 FF_DISABLE_DEPRECATION_WARNINGS
41 FFSWAP(uint64_t, frame->error[1], frame->error[2]);
42 FF_ENABLE_DEPRECATION_WARNINGS
46 static AVFrame *get_video_buffer(AVFilterLink *link, int w, int h)
48 AVFrame *picref = ff_default_get_video_buffer(link, w, h);
53 static int filter_frame(AVFilterLink *link, AVFrame *inpicref)
56 return ff_filter_frame(link->dst->outputs[0], inpicref);
59 static int is_planar_yuv(const AVPixFmtDescriptor *desc)
63 if (desc->flags & ~(AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_ALPHA) ||
64 desc->nb_components < 3 ||
65 (desc->comp[1].depth != desc->comp[2].depth))
67 for (i = 0; i < desc->nb_components; i++) {
68 if (desc->comp[i].offset != 0 ||
69 desc->comp[i].shift != 0 ||
70 desc->comp[i].plane != i)
77 static int query_formats(AVFilterContext *ctx)
79 AVFilterFormats *formats = NULL;
82 for (fmt = 0; av_pix_fmt_desc_get(fmt); fmt++) {
83 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(fmt);
84 if (is_planar_yuv(desc))
85 ff_add_format(&formats, fmt);
88 return ff_set_common_formats(ctx, formats);
91 static const AVFilterPad swapuv_inputs[] = {
94 .type = AVMEDIA_TYPE_VIDEO,
95 .get_video_buffer = get_video_buffer,
96 .filter_frame = filter_frame,
101 static const AVFilterPad swapuv_outputs[] = {
104 .type = AVMEDIA_TYPE_VIDEO,
109 AVFilter ff_vf_swapuv = {
111 .description = NULL_IF_CONFIG_SMALL("Swap U and V components."),
112 .query_formats = query_formats,
113 .inputs = swapuv_inputs,
114 .outputs = swapuv_outputs,