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9a861c930b
The screenshot command is documented to not overwrite existing files. However, there is a race window between the filename is generated with gen_fname and when the file is open to write. Specifically, the convert_image function in this window can be very time consuming depending on video and screenshot image format and size. This results in existing file being overwritten because the file writing functions don't check for the existance of file. Fix this be opening the file in exclusive mode. Add overwrite parameter to write_image for other operations that are documented to overwrite existing files, like screenshot-to-file. Note that for write_avif, checking existance is used instead because avio_open does not support exclusive open mode.
75 lines
2.5 KiB
C
75 lines
2.5 KiB
C
/*
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* This file is part of mpv.
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*
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* mpv 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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* mpv 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
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* GNU 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 mpv. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "options/m_option.h"
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struct mp_image;
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struct mp_log;
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struct image_writer_opts {
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int format;
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bool high_bit_depth;
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int png_compression;
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int png_filter;
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int jpeg_quality;
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bool jpeg_source_chroma;
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bool webp_lossless;
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int webp_quality;
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int webp_compression;
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double jxl_distance;
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int jxl_effort;
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char *avif_encoder;
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char *avif_pixfmt;
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char **avif_opts;
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bool tag_csp;
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};
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extern const struct image_writer_opts image_writer_opts_defaults;
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extern const struct m_option image_writer_opts[];
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// Return the file extension that will be used, e.g. "png".
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const char *image_writer_file_ext(const struct image_writer_opts *opts);
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// Return whether the selected format likely supports >8 bit per component.
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bool image_writer_high_depth(const struct image_writer_opts *opts);
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// Return whether the selected format likely supports non-sRGB colorspaces
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bool image_writer_flexible_csp(const struct image_writer_opts *opts);
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// Map file extension to format ID - return 0 (which is invalid) if unknown.
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int image_writer_format_from_ext(const char *ext);
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/*
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* Save the given image under the given filename. The parameters csp and opts
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* are optional. All pixel formats supported by swscale are supported.
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*
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* File format and compression settings are controlled via the opts parameter.
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*
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* If global!=NULL, use command line scaler options etc.
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*
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* NOTE: The fields w/h/width/height of the passed mp_image must be all set
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* accordingly. Setting w and width or h and height to different values
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* can be used to store snapshots of anamorphic video.
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*/
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bool write_image(struct mp_image *image, const struct image_writer_opts *opts,
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const char *filename, struct mpv_global *global,
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struct mp_log *log, bool overwrite);
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// Debugging helper.
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void dump_png(struct mp_image *image, const char *filename, struct mp_log *log);
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