Library: filter by file properties (quality, codec, HDR, DV, language)

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
2026-10-20 20:22:06 +02:00
parent a7d74e2097
commit b34f88ef3e
12 changed files with 564 additions and 45 deletions
@@ -0,0 +1,103 @@
+package arr
+
+import (
+	"regexp"
+	"strings"
+)
+
+// MediaFile is a downloaded file as Radarr (movieFile) and Sonarr
+// (episodeFile) describe it.
+type MediaFile struct {
+	Size         int64  `json:"size"`
+	SceneName    string `json:"sceneName,omitempty"`
+	RelativePath string `json:"relativePath,omitempty"`
+	Quality      struct {
+		Quality struct {
+			Name       string `json:"name"`
+			Resolution int    `json:"resolution"`
+		} `json:"quality"`
+	} `json:"quality"`
+	MediaInfo struct {
+		VideoCodec            string `json:"videoCodec"`
+		VideoDynamicRange     string `json:"videoDynamicRange"`
+		VideoDynamicRangeType string `json:"videoDynamicRangeType"`
+	} `json:"mediaInfo"`
+	Languages []struct {
+		Name string `json:"name"`
+	} `json:"languages"`
+}
+
+// Codec names used for filtering.
+const (
+	CodecX265 = "x265"
+	CodecX264 = "x264"
+	CodecAV1  = "AV1"
+)
+
+// FileAttrs are the properties of a file the library can be filtered by.
+type FileAttrs struct {
+	Resolution int      // 2160, 1080, 720, 480 ... or 0 if unknown
+	Codec      string   // CodecX265, CodecX264, CodecAV1 or ""
+	HDR        bool     // HDR10, HDR10+, HLG, PQ (also with Dolby Vision on top)
+	DV         bool     // Dolby Vision
+	Languages  []string // audio languages
+}
+
+var (
+	reRes = regexp.MustCompile(`(?i)\b(2160|1080|720|576|480)p\b`)
+	re265 = regexp.MustCompile(`(?i)(x\.?265|h\.?265|hevc)`)
+	re264 = regexp.MustCompile(`(?i)(x\.?264|h\.?264|\bavc\b)`)
+	reAV1 = regexp.MustCompile(`(?i)\bav1\b`)
+	reDV  = regexp.MustCompile(`(?i)(\bdv\b|dovi|dolby[ .]?vision)`)
+	reHDR = regexp.MustCompile(`(?i)\b(hdr(10(\+|plus)?)?|hlg|pq)\b`)
+)
+
+// Attrs derives the filterable properties. Radarr/Sonarr's media info is used
+// when present, otherwise the names (scene name, path, quality) are searched.
+func (f MediaFile) Attrs() FileAttrs {
+	names := strings.Join([]string{f.SceneName, f.RelativePath, f.Quality.Quality.Name}, " ")
+	a := FileAttrs{Resolution: f.Quality.Quality.Resolution}
+	if a.Resolution == 0 {
+		if m := reRes.FindStringSubmatch(names); m != nil {
+			a.Resolution = atoi(m[1])
+		}
+	}
+
+	codec := f.MediaInfo.VideoCodec + " " + names
+	switch {
+	case re265.MatchString(f.MediaInfo.VideoCodec):
+		a.Codec = CodecX265
+	case re264.MatchString(f.MediaInfo.VideoCodec):
+		a.Codec = CodecX264
+	case reAV1.MatchString(f.MediaInfo.VideoCodec):
+		a.Codec = CodecAV1
+	case f.MediaInfo.VideoCodec != "":
+		// A codec we do not offer as a filter (VC-1, MPEG-2...): do not guess from the name.
+	case re265.MatchString(codec):
+		a.Codec = CodecX265
+	case re264.MatchString(codec):
+		a.Codec = CodecX264
+	case reAV1.MatchString(codec):
+		a.Codec = CodecAV1
+	}
+
+	dr := f.MediaInfo.VideoDynamicRangeType + " " + f.MediaInfo.VideoDynamicRange
+	if strings.TrimSpace(dr) == "" {
+		dr = names
+	}
+	a.DV = reDV.MatchString(dr)
+	a.HDR = reHDR.MatchString(dr)
+	for _, l := range f.Languages {
+		if l.Name != "" {
+			a.Languages = append(a.Languages, l.Name)
+		}
+	}
+	return a
+}
+
+func atoi(s string) (n int) {
+	for _, c := range s {
+		n = n*10 + int(c-'0')
+	}
+	return n
+}