45 lines
2.0 KiB
EmacsLisp
45 lines
2.0 KiB
EmacsLisp
;;; fix-dirvish-preview.el --- fix dirvish preview on windows -*- lexical-binding: t -*-
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;;; Commentary:
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;; Fix video-mtn preview issue on Windows
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;; The problem: mtn generates thumbnails with filename like "video.mp4.jpg",
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;; but dirvish expects MD5-based filename like "a1b2c3d4.jpg"
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;;; Code:
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(with-eval-after-load 'dirvish
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;; Function to find mtn output file for a given video file in cache directory
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(defun my-dirvish-find-mtn-output (video-file cache-dir ext)
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"Find mtn-generated thumbnail for VIDEO-FILE in CACHE-DIR with extension EXT."
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(let* ((file-base (file-name-base video-file))
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;; mtn generates: [filename].[ext].jpg
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(mtn-pattern (format "%s.%s.jpg" (regexp-quote file-base) ext))
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(files (directory-files cache-dir t mtn-pattern)))
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(car files)))
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;; Advice to fix the sentinel after mtn generates the thumbnail
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(defun my-dirvish-media--cache-sentinel-advice (orig-fun proc exit-code)
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"Advice to rename mtn output to MD5 format after generation."
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(let* ((video-path (process-get proc 'path))
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(ext (downcase (or (file-name-extension video-path) "")))
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(dv (dirvish-curr)))
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(when (and (memq system-type '(ms-dos windows-nt))
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(member ext dirvish-video-exts)
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dv)
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;; Try to find and rename mtn output to MD5 format
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(let* ((width (dirvish-media--img-size (dv-preview-window dv)))
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(cache (dirvish--img-thumb-name video-path width ".jpg"))
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(cache-dir (dirvish--get-parent-path cache))
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(mtn-file (my-dirvish-find-mtn-output video-path cache-dir ext)))
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(when (and mtn-file (file-exists-p mtn-file) (not (file-exists-p cache)))
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(rename-file mtn-file cache)))))
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;; Call original function
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(funcall orig-fun proc exit-code))
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;; Apply advice
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(advice-add 'dirvish-media--cache-sentinel :around #'my-dirvish-media--cache-sentinel-advice))
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(provide 'fix-dirvish-preview)
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;;; fix-dirvish-preview.el ends here
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