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
28 static AVFilterBufferRef *get_video_buffer(AVFilterLink *link, int perms,
31 AVFilterBufferRef *picref =
32 avfilter_default_get_video_buffer(link, perms, w, h);
36 tmp = picref->data[2];
37 picref->data[2] = picref->data[1];
38 picref->data[1] = tmp;
40 tmp2 = picref->linesize[2];
41 picref->linesize[2] = picref->linesize[1];
42 picref->linesize[1] = tmp2;
47 static void start_frame(AVFilterLink *link, AVFilterBufferRef *inpicref)
49 AVFilterBufferRef *outpicref = avfilter_ref_buffer(inpicref, ~0);
51 outpicref->data[1] = inpicref->data[2];
52 outpicref->data[2] = inpicref->data[1];
54 outpicref->linesize[1] = inpicref->linesize[2];
55 outpicref->linesize[2] = inpicref->linesize[1];
57 avfilter_start_frame(link->dst->outputs[0], outpicref);
60 static int query_formats(AVFilterContext *ctx)
62 static const enum PixelFormat pix_fmts[] = {
63 PIX_FMT_YUV420P, PIX_FMT_YUVJ420P, PIX_FMT_YUVA420P,
64 PIX_FMT_YUV444P, PIX_FMT_YUVJ444P, PIX_FMT_YUVA444P,
65 PIX_FMT_YUV440P, PIX_FMT_YUVJ440P,
66 PIX_FMT_YUV422P, PIX_FMT_YUVJ422P,
71 avfilter_set_common_pixel_formats(ctx, avfilter_make_format_list(pix_fmts));
75 AVFilter avfilter_vf_swapuv = {
77 .description = NULL_IF_CONFIG_SMALL("Swap U and V components."),
79 .query_formats = query_formats,
81 .inputs = (const AVFilterPad[]) {
83 .type = AVMEDIA_TYPE_VIDEO,
84 .get_video_buffer = get_video_buffer,
85 .start_frame = start_frame, },
88 .outputs = (const AVFilterPad[]) {
90 .type = AVMEDIA_TYPE_VIDEO, },