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ae436cc5e4
libavformat/img2.h: New field export_path_metadata to
VideoDemuxData to only allow the use of the extra metadata
upon explicit user request, for security reasons.
libavformat/img2dec.c: Modify image2 demuxer to make available
two special metadata entries called lavf.image2dec.source_path
and lavf.image2dec.source_basename, which represents, respectively,
the complete path to the source image for the current frame and
the basename i.e. the file name related to the current frame.
These can then be used by filters like drawtext and others. The
metadata fields will only be available when explicitly enabled
with image2 option -export_path_metadata 1.
doc/demuxers.texi: Documented the new metadata fields available
for image2 and how to use them.
doc/filters.texi: Added an example on how to use the new metadata
fields with drawtext filter, in order to plot the input file path
to each output frame.
Usage example:
ffmpeg -f image2 -export_path_metadata 1 -pattern_type glob
-framerate 18 -i '/path/to/input/files/*.jpg'
-filter_complex drawtext="fontsize=40:fontcolor=white:
fontfile=FreeSans.ttf:borderw=2:bordercolor=black:
text='%{metadata\:lavf.image2dec.source_basename\:NA}':x=5:y=50"
output.avi
Fixes #2874.
Signed-off-by: Alexandre Heitor Schmidt <alexandre.schmidt@gmail.com>
Signed-off-by: Marton Balint <cus@passwd.hu>
80 lines
2.1 KiB
C
80 lines
2.1 KiB
C
/*
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* Image format
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* Copyright (c) 2014 Michael Niedermayer
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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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#ifndef AVFORMAT_IMG2_H
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#define AVFORMAT_IMG2_H
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#include <stdint.h>
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#include "avformat.h"
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#include "libavutil/opt.h"
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#if HAVE_GLOB
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#include <glob.h>
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#endif
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enum PatternType {
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PT_GLOB_SEQUENCE,
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PT_GLOB,
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PT_SEQUENCE,
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PT_NONE,
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PT_DEFAULT
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};
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typedef struct VideoDemuxData {
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const AVClass *class; /**< Class for private options. */
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int img_first;
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int img_last;
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int img_number;
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int64_t pts;
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int img_count;
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int is_pipe;
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int split_planes; /**< use independent file for each Y, U, V plane */
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char path[1024];
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char *pixel_format; /**< Set by a private option. */
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int width, height; /**< Set by a private option. */
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AVRational framerate; /**< Set by a private option. */
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int loop;
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int pattern_type; /**< PatternType */
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int use_glob;
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#if HAVE_GLOB
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glob_t globstate;
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#endif
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int start_number;
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int start_number_range;
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int frame_size;
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int ts_from_file;
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int export_path_metadata; /**< enabled when set to 1. */
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} VideoDemuxData;
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typedef struct IdStrMap {
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enum AVCodecID id;
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const char *str;
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} IdStrMap;
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extern const IdStrMap ff_img_tags[];
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extern const AVOption ff_img_options[];
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int ff_img_read_header(AVFormatContext *s1);
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int ff_img_read_packet(AVFormatContext *s1, AVPacket *pkt);
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#endif
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