| /* |
| * 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" |
| |
| static AVFilterBufferRef *get_video_buffer(AVFilterLink *link, int perms, |
| int w, int h) |
| { |
| AVFilterBufferRef *picref = |
| avfilter_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 void 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]; |
| |
| avfilter_start_frame(link->dst->outputs[0], outpicref); |
| } |
| |
| static int query_formats(AVFilterContext *ctx) |
| { |
| static const enum PixelFormat pix_fmts[] = { |
| PIX_FMT_YUV420P, PIX_FMT_YUVJ420P, PIX_FMT_YUVA420P, |
| PIX_FMT_YUV444P, PIX_FMT_YUVJ444P, |
| PIX_FMT_YUV440P, PIX_FMT_YUVJ440P, |
| PIX_FMT_YUV422P, PIX_FMT_YUVJ422P, |
| PIX_FMT_YUV411P, |
| PIX_FMT_NONE, |
| }; |
| |
| avfilter_set_common_pixel_formats(ctx, avfilter_make_format_list(pix_fmts)); |
| return 0; |
| } |
| |
| AVFilter avfilter_vf_swapuv = { |
| .name = "swapuv", |
| .description = NULL_IF_CONFIG_SMALL("Swap U and V components."), |
| .priv_size = 0, |
| .query_formats = query_formats, |
| |
| .inputs = (const AVFilterPad[]) { |
| { .name = "default", |
| .type = AVMEDIA_TYPE_VIDEO, |
| .get_video_buffer = get_video_buffer, |
| .start_frame = start_frame, }, |
| { .name = NULL } |
| }, |
| .outputs = (const AVFilterPad[]) { |
| { .name = "default", |
| .type = AVMEDIA_TYPE_VIDEO, }, |
| { .name = NULL } |
| }, |
| }; |