diff options
Diffstat (limited to 'libavfilter/vf_swapuv.c')
-rw-r--r-- | libavfilter/vf_swapuv.c | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/libavfilter/vf_swapuv.c b/libavfilter/vf_swapuv.c new file mode 100644 index 0000000..bfe71e8 --- /dev/null +++ b/libavfilter/vf_swapuv.c @@ -0,0 +1,95 @@ +/* + * 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; +} + +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 } + }, +}; |