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/*
* Copyright (c) 2002 Michael Niedermayer <michaelni@gmx.at>
*
* 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
*/
/**
* @file
* swap UV filter
*/
#include "avfilter.h"
#include "formats.h"
#include "video.h"
static AVFilterBufferRef *get_video_buffer(AVFilterLink *link, int perms,
int w, int h)
{
AVFilterBufferRef *picref =
ff_default_get_video_buffer(link, perms, w, h);
uint8_t *tmp;
int tmp2;
tmp = picref->data[2];
picref->data[2] = picref->data[1];
picref->data[1] = tmp;
tmp2 = picref->linesize[2];
picref->linesize[2] = picref->linesize[1];
picref->linesize[1] = tmp2;
return picref;
}
static int start_frame(AVFilterLink *link, AVFilterBufferRef *inpicref)
{
AVFilterBufferRef *outpicref = avfilter_ref_buffer(inpicref, ~0);
outpicref->data[1] = inpicref->data[2];
outpicref->data[2] = inpicref->data[1];
outpicref->linesize[1] = inpicref->linesize[2];
outpicref->linesize[2] = inpicref->linesize[1];
return ff_start_frame(link->dst->outputs[0], outpicref);
}
static int query_formats(AVFilterContext *ctx)
{
static const enum AVPixelFormat pix_fmts[] = {
AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVA420P,
AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVA444P,
AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUVJ440P,
AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVJ422P,
AV_PIX_FMT_YUV411P,
AV_PIX_FMT_NONE,
};
ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
return 0;
}
static const AVFilterPad swapuv_inputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.get_video_buffer = get_video_buffer,
.start_frame = start_frame,
},
{ NULL }
};
static const AVFilterPad swapuv_outputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
},
{ NULL }
};
AVFilter avfilter_vf_swapuv = {
.name = "swapuv",
.description = NULL_IF_CONFIG_SMALL("Swap U and V components."),
.priv_size = 0,
.query_formats = query_formats,
.inputs = swapuv_inputs,
.outputs = swapuv_outputs,
};
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