aboutsummaryrefslogtreecommitdiffhomepage
path: root/server/lib/thumbnail.ts
blob: 344c28566798ed48a080a72f675871311fab4a82 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
import { VideoFileModel } from '../models/video/video-file'
import { generateImageFromVideoFile } from '../helpers/ffmpeg-utils'
import { CONFIG } from '../initializers/config'
import { PREVIEWS_SIZE, THUMBNAILS_SIZE } from '../initializers/constants'
import { VideoModel } from '../models/video/video'
import { ThumbnailModel } from '../models/video/thumbnail'
import { ThumbnailType } from '../../shared/models/videos/thumbnail.type'
import { processImage } from '../helpers/image-utils'
import { join } from 'path'
import { downloadImage } from '../helpers/requests'
import { VideoPlaylistModel } from '../models/video/video-playlist'

type ImageSize = { height: number, width: number }

function createPlaylistThumbnailFromExisting (inputPath: string, playlist: VideoPlaylistModel, keepOriginal = false, size?: ImageSize) {
  const { filename, outputPath, height, width, existingThumbnail } = buildMetadataFromPlaylist(playlist, size)
  const type = ThumbnailType.THUMBNAIL

  const thumbnailCreator = () => processImage({ path: inputPath }, outputPath, { width, height }, keepOriginal)
  return createThumbnailFromFunction({ thumbnailCreator, filename, height, width, type, existingThumbnail })
}

function createPlaylistThumbnailFromUrl (url: string, playlist: VideoPlaylistModel, size?: ImageSize) {
  const { filename, basePath, height, width, existingThumbnail } = buildMetadataFromPlaylist(playlist, size)
  const type = ThumbnailType.THUMBNAIL

  const thumbnailCreator = () => downloadImage(url, basePath, filename, { width, height })
  return createThumbnailFromFunction({ thumbnailCreator, filename, height, width, type, existingThumbnail, url })
}

function createVideoThumbnailFromUrl (url: string, video: VideoModel, type: ThumbnailType, size?: ImageSize) {
  const { filename, basePath, height, width, existingThumbnail } = buildMetadataFromVideo(video, type, size)
  const thumbnailCreator = () => downloadImage(url, basePath, filename, { width, height })

  return createThumbnailFromFunction({ thumbnailCreator, filename, height, width, type, existingThumbnail, url })
}

function createVideoThumbnailFromExisting (inputPath: string, video: VideoModel, type: ThumbnailType, size?: ImageSize) {
  const { filename, outputPath, height, width, existingThumbnail } = buildMetadataFromVideo(video, type, size)
  const thumbnailCreator = () => processImage({ path: inputPath }, outputPath, { width, height })

  return createThumbnailFromFunction({ thumbnailCreator, filename, height, width, type, existingThumbnail })
}

function generateVideoThumbnail (video: VideoModel, videoFile: VideoFileModel, type: ThumbnailType) {
  const input = video.getVideoFilePath(videoFile)

  const { filename, basePath, height, width, existingThumbnail } = buildMetadataFromVideo(video, type)
  const thumbnailCreator = () => generateImageFromVideoFile(input, basePath, filename, { height, width })

  return createThumbnailFromFunction({ thumbnailCreator, filename, height, width, type, existingThumbnail })
}

function createPlaceholderThumbnail (url: string, video: VideoModel, type: ThumbnailType, size: ImageSize) {
  const { filename, height, width, existingThumbnail } = buildMetadataFromVideo(video, type, size)

  const thumbnail = existingThumbnail ? existingThumbnail : new ThumbnailModel()

  thumbnail.filename = filename
  thumbnail.height = height
  thumbnail.width = width
  thumbnail.type = type
  thumbnail.url = url

  return thumbnail
}

// ---------------------------------------------------------------------------

export {
  generateVideoThumbnail,
  createVideoThumbnailFromUrl,
  createVideoThumbnailFromExisting,
  createPlaceholderThumbnail,
  createPlaylistThumbnailFromUrl,
  createPlaylistThumbnailFromExisting
}

function buildMetadataFromPlaylist (playlist: VideoPlaylistModel, size: ImageSize) {
  const filename = playlist.generateThumbnailName()
  const basePath = CONFIG.STORAGE.THUMBNAILS_DIR

  return {
    filename,
    basePath,
    existingThumbnail: playlist.Thumbnail,
    outputPath: join(basePath, filename),
    height: size ? size.height : THUMBNAILS_SIZE.height,
    width: size ? size.width : THUMBNAILS_SIZE.width
  }
}

function buildMetadataFromVideo (video: VideoModel, type: ThumbnailType, size?: ImageSize) {
  const existingThumbnail = Array.isArray(video.Thumbnails)
    ? video.Thumbnails.find(t => t.type === type)
    : undefined

  if (type === ThumbnailType.THUMBNAIL) {
    const filename = video.generateThumbnailName()
    const basePath = CONFIG.STORAGE.THUMBNAILS_DIR

    return {
      filename,
      basePath,
      existingThumbnail,
      outputPath: join(basePath, filename),
      height: size ? size.height : THUMBNAILS_SIZE.height,
      width: size ? size.width : THUMBNAILS_SIZE.width
    }
  }

  if (type === ThumbnailType.PREVIEW) {
    const filename = video.generatePreviewName()
    const basePath = CONFIG.STORAGE.PREVIEWS_DIR

    return {
      filename,
      basePath,
      existingThumbnail,
      outputPath: join(basePath, filename),
      height: size ? size.height : PREVIEWS_SIZE.height,
      width: size ? size.width : PREVIEWS_SIZE.width
    }
  }

  return undefined
}

async function createThumbnailFromFunction (parameters: {
  thumbnailCreator: () => Promise<any>,
  filename: string,
  height: number,
  width: number,
  type: ThumbnailType,
  url?: string,
  existingThumbnail?: ThumbnailModel
}) {
  const { thumbnailCreator, filename, width, height, type, existingThumbnail, url = null } = parameters

  const thumbnail = existingThumbnail ? existingThumbnail : new ThumbnailModel()

  thumbnail.filename = filename
  thumbnail.height = height
  thumbnail.width = width
  thumbnail.type = type
  thumbnail.url = url

  await thumbnailCreator()

  return thumbnail
}