2009-10-27 21:40:43 +00:00
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/*
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2010-11-28 10:22:58 +00:00
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* Copyright (c) 2007 Bobby Bingham
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2009-10-27 21:40:43 +00:00
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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2010-04-20 14:45:34 +00:00
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* @file
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2009-11-03 21:59:41 +00:00
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* format and noformat video filters
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2009-10-27 21:40:43 +00:00
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*/
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2012-08-06 13:49:32 +00:00
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#include <string.h>
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#include "libavutil/internal.h"
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#include "libavutil/mem.h"
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2010-01-30 19:10:26 +00:00
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#include "libavutil/pixdesc.h"
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2013-02-25 20:21:29 +00:00
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#include "libavutil/opt.h"
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2009-10-27 21:40:43 +00:00
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#include "avfilter.h"
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2012-05-30 08:12:55 +00:00
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#include "formats.h"
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2012-06-12 18:12:42 +00:00
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#include "internal.h"
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2012-05-19 08:37:56 +00:00
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#include "video.h"
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2009-10-27 21:40:43 +00:00
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2014-04-11 09:54:15 +00:00
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typedef struct FormatContext {
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2013-02-25 20:21:29 +00:00
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const AVClass *class;
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char *pix_fmts;
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2014-05-24 09:15:15 +00:00
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2009-10-27 21:40:43 +00:00
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/**
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2014-05-24 09:15:15 +00:00
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* pix_fmts parsed into AVPixelFormats and terminated with
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* AV_PIX_FMT_NONE
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2009-10-27 21:40:43 +00:00
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*/
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2014-05-24 09:15:15 +00:00
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enum AVPixelFormat *formats;
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2009-10-27 21:40:43 +00:00
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} FormatContext;
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2014-05-24 09:15:15 +00:00
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static av_cold void uninit(AVFilterContext *ctx)
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{
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FormatContext *s = ctx->priv;
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av_freep(&s->formats);
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}
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2009-10-27 21:40:43 +00:00
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2013-03-13 07:26:39 +00:00
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static av_cold int init(AVFilterContext *ctx)
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2009-10-27 21:40:43 +00:00
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{
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2013-03-18 19:44:36 +00:00
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FormatContext *s = ctx->priv;
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2014-05-24 09:15:15 +00:00
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char *cur, *sep;
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int nb_formats = 1;
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int i;
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2014-05-27 00:46:56 +00:00
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int ret;
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2014-05-24 09:15:15 +00:00
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2014-10-18 15:10:35 +00:00
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if (!s->pix_fmts) {
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av_log(ctx, AV_LOG_ERROR, "Empty output format string.\n");
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2014-07-03 00:05:34 +00:00
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return AVERROR(EINVAL);
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2014-10-18 15:10:35 +00:00
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}
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2014-07-03 00:05:34 +00:00
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2014-05-24 09:15:15 +00:00
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/* count the formats */
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cur = s->pix_fmts;
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while ((cur = strchr(cur, '|'))) {
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nb_formats++;
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if (*cur)
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cur++;
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}
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s->formats = av_malloc_array(nb_formats + 1, sizeof(*s->formats));
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if (!s->formats)
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return AVERROR(ENOMEM);
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2009-10-27 21:40:43 +00:00
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/* parse the list of formats */
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2014-05-24 09:15:15 +00:00
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cur = s->pix_fmts;
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for (i = 0; i < nb_formats; i++) {
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sep = strchr(cur, '|');
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if (sep)
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*sep++ = 0;
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2009-10-27 21:40:43 +00:00
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2014-05-27 00:46:56 +00:00
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if ((ret = ff_parse_pixel_format(&s->formats[i], cur, ctx)) < 0)
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2011-08-22 12:56:23 +00:00
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return ret;
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2009-10-27 21:40:43 +00:00
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2014-05-24 09:15:15 +00:00
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cur = sep;
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}
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s->formats[nb_formats] = AV_PIX_FMT_NONE;
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if (!strcmp(ctx->filter->name, "noformat")) {
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const AVPixFmtDescriptor *desc = NULL;
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enum AVPixelFormat *formats_allowed;
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2014-05-27 00:53:17 +00:00
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int nb_formats_lavu = 0, nb_formats_allowed = 0;
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2009-10-27 21:40:43 +00:00
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2014-05-24 09:15:15 +00:00
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/* count the formats known to lavu */
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while ((desc = av_pix_fmt_desc_next(desc)))
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nb_formats_lavu++;
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formats_allowed = av_malloc_array(nb_formats_lavu + 1, sizeof(*formats_allowed));
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if (!formats_allowed)
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return AVERROR(ENOMEM);
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/* for each format known to lavu, check if it's in the list of
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* forbidden formats */
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while ((desc = av_pix_fmt_desc_next(desc))) {
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enum AVPixelFormat pix_fmt = av_pix_fmt_desc_get_id(desc);
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2009-10-27 21:40:43 +00:00
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2014-05-24 09:15:15 +00:00
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for (i = 0; i < nb_formats; i++) {
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if (s->formats[i] == pix_fmt)
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break;
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}
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if (i < nb_formats)
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continue;
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formats_allowed[nb_formats_allowed++] = pix_fmt;
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}
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formats_allowed[nb_formats_allowed] = AV_PIX_FMT_NONE;
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av_freep(&s->formats);
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s->formats = formats_allowed;
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2009-10-27 21:40:43 +00:00
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}
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return 0;
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}
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2014-05-24 09:15:15 +00:00
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static int query_formats(AVFilterContext *ctx)
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2009-10-27 21:40:43 +00:00
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{
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2014-05-24 09:15:15 +00:00
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FormatContext *s = ctx->priv;
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2021-08-09 23:25:31 +00:00
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return ff_set_common_formats_from_list(ctx, s->formats);
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2009-10-27 21:40:43 +00:00
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}
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2014-05-24 09:15:15 +00:00
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2013-02-25 20:21:29 +00:00
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#define OFFSET(x) offsetof(FormatContext, x)
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static const AVOption options[] = {
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2016-04-21 14:49:00 +00:00
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{ "pix_fmts", "A '|'-separated list of pixel formats", OFFSET(pix_fmts), AV_OPT_TYPE_STRING, .flags = AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM },
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2013-09-07 12:13:50 +00:00
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{ NULL }
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2013-02-25 20:21:29 +00:00
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};
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2021-09-10 20:40:20 +00:00
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AVFILTER_DEFINE_CLASS_EXT(format, "(no)format", options);
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2010-03-17 04:37:36 +00:00
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2021-09-10 20:40:20 +00:00
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#if CONFIG_FORMAT_FILTER
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2013-02-25 20:21:29 +00:00
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2012-07-24 13:14:01 +00:00
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static const AVFilterPad avfilter_vf_format_inputs[] = {
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{
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.name = "default",
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.type = AVMEDIA_TYPE_VIDEO,
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2021-08-17 03:48:27 +00:00
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.get_buffer.video = ff_null_get_video_buffer,
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2012-07-24 13:14:01 +00:00
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},
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};
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static const AVFilterPad avfilter_vf_format_outputs[] = {
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{
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.name = "default",
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.type = AVMEDIA_TYPE_VIDEO
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},
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};
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2021-04-19 16:33:56 +00:00
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const AVFilter ff_vf_format = {
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2013-09-07 12:13:50 +00:00
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.name = "format",
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.description = NULL_IF_CONFIG_SMALL("Convert the input video to one of the specified pixel formats."),
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2009-10-27 21:40:43 +00:00
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2013-09-07 12:13:50 +00:00
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.init = init,
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2014-05-27 00:46:56 +00:00
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.uninit = uninit,
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2009-10-27 21:40:43 +00:00
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2014-05-24 09:15:15 +00:00
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.query_formats = query_formats,
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2009-10-27 21:40:43 +00:00
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2013-09-07 12:13:50 +00:00
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.priv_size = sizeof(FormatContext),
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.priv_class = &format_class,
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2009-10-27 21:40:43 +00:00
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2021-08-12 11:05:31 +00:00
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FILTER_INPUTS(avfilter_vf_format_inputs),
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FILTER_OUTPUTS(avfilter_vf_format_outputs),
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2009-10-27 21:40:43 +00:00
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};
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2010-03-17 04:37:40 +00:00
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#endif /* CONFIG_FORMAT_FILTER */
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2009-10-27 21:40:43 +00:00
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2010-03-17 04:37:40 +00:00
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#if CONFIG_NOFORMAT_FILTER
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2010-03-17 04:37:36 +00:00
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2012-07-24 13:14:01 +00:00
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static const AVFilterPad avfilter_vf_noformat_inputs[] = {
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{
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.name = "default",
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.type = AVMEDIA_TYPE_VIDEO,
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2021-08-17 03:48:27 +00:00
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.get_buffer.video = ff_null_get_video_buffer,
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2012-07-24 13:14:01 +00:00
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},
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};
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static const AVFilterPad avfilter_vf_noformat_outputs[] = {
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{
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.name = "default",
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.type = AVMEDIA_TYPE_VIDEO
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},
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};
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2021-04-19 16:33:56 +00:00
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const AVFilter ff_vf_noformat = {
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2013-09-07 12:13:50 +00:00
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.name = "noformat",
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.description = NULL_IF_CONFIG_SMALL("Force libavfilter not to use any of the specified pixel formats for the input to the next filter."),
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2021-09-10 20:40:20 +00:00
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.priv_class = &format_class,
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2009-10-27 21:40:43 +00:00
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2013-09-07 12:13:50 +00:00
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.init = init,
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2014-05-27 00:46:56 +00:00
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.uninit = uninit,
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2009-10-27 21:40:43 +00:00
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2014-05-24 09:15:15 +00:00
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.query_formats = query_formats,
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2009-10-27 21:40:43 +00:00
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2013-09-07 12:13:50 +00:00
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.priv_size = sizeof(FormatContext),
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2009-10-27 21:40:43 +00:00
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2021-08-12 11:05:31 +00:00
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FILTER_INPUTS(avfilter_vf_noformat_inputs),
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FILTER_OUTPUTS(avfilter_vf_noformat_outputs),
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2009-10-27 21:40:43 +00:00
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};
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2010-03-17 04:37:40 +00:00
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#endif /* CONFIG_NOFORMAT_FILTER */
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