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https://github.com/mpv-player/mpv
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9f595f3a80
Using the GL renderer for color conversion will make sure screenshots will use the same conversion as normal video rendering. It can do this for all types of screenshots. The logic when to write 16 bit PNGs changes. To approximate the old behavior, we decide by looking whether the source video format has more than 8 bits per component. We apply this logic even for window screenshots. Also, 16 bit PNGs now always include an unused alpha channel. The reason is that FFmpeg has RGB48 and RGBA64 formats, but no RGB064. RGB48 is 3 bytes and usually not supported by GPUs for rendering, so we have to use RGBA64, which forces an alpha channel. Will break for users who use --target-trc and similar options. I considered creating a new gl_video context, but it could double GPU memory use, so I didn't. This uses FBOs instead of glGetTexImage(), because that increases the chance it could work on GLES (e.g. ANGLE). Untested. No support for the Vulkan and D3D11 backends yet. Fixes #5498. Also fixes #5240, because the code for reading back is not used with the new code path.
72 lines
2.5 KiB
C
72 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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int 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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int jpeg_optimize;
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int jpeg_smooth;
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int jpeg_dpi;
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int jpeg_progressive;
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int jpeg_baseline;
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int jpeg_source_chroma;
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int 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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// 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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* 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 mp_log *log);
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/* Return the image converted to the given format. If the pixel aspect ratio is
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* not 1:1, the image is scaled as well. Returns NULL on failure.
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*/
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struct mp_image *convert_image(struct mp_image *image, int destfmt,
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struct mp_log *log);
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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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