Added arn to the main repository
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213
arn/AnimeImage.go
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213
arn/AnimeImage.go
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package arn
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import (
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"bytes"
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"image"
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"path"
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"time"
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"github.com/akyoto/imageserver"
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)
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const (
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// AnimeImageLargeWidth is the minimum width in pixels of a large anime image.
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AnimeImageLargeWidth = 250
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// AnimeImageLargeHeight is the minimum height in pixels of a large anime image.
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AnimeImageLargeHeight = 350
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// AnimeImageMediumWidth is the minimum width in pixels of a medium anime image.
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AnimeImageMediumWidth = 142
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// AnimeImageMediumHeight is the minimum height in pixels of a medium anime image.
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AnimeImageMediumHeight = 200
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// AnimeImageSmallWidth is the minimum width in pixels of a small anime image.
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AnimeImageSmallWidth = 55
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// AnimeImageSmallHeight is the minimum height in pixels of a small anime image.
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AnimeImageSmallHeight = 78
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// AnimeImageWebPQuality is the WebP quality of anime images.
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AnimeImageWebPQuality = 70
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// AnimeImageJPEGQuality is the JPEG quality of anime images.
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AnimeImageJPEGQuality = 70
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// AnimeImageQualityBonusLowDPI ...
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AnimeImageQualityBonusLowDPI = 10
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// AnimeImageQualityBonusLarge ...
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AnimeImageQualityBonusLarge = 5
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// AnimeImageQualityBonusMedium ...
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AnimeImageQualityBonusMedium = 10
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// AnimeImageQualityBonusSmall ...
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AnimeImageQualityBonusSmall = 10
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)
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// Define the anime image outputs
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var animeImageOutputs = []imageserver.Output{
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// Original at full size
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&imageserver.OriginalFile{
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Directory: path.Join(Root, "images/anime/original/"),
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Width: 0,
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Height: 0,
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Quality: 0,
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},
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// JPEG - Large
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&imageserver.JPEGFile{
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Directory: path.Join(Root, "images/anime/large/"),
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Width: AnimeImageLargeWidth,
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Height: AnimeImageLargeHeight,
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Quality: AnimeImageJPEGQuality + AnimeImageQualityBonusLowDPI + AnimeImageQualityBonusLarge,
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},
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// JPEG - Medium
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&imageserver.JPEGFile{
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Directory: path.Join(Root, "images/anime/medium/"),
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Width: AnimeImageMediumWidth,
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Height: AnimeImageMediumHeight,
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Quality: AnimeImageJPEGQuality + AnimeImageQualityBonusLowDPI + AnimeImageQualityBonusMedium,
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},
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// JPEG - Small
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&imageserver.JPEGFile{
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Directory: path.Join(Root, "images/anime/small/"),
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Width: AnimeImageSmallWidth,
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Height: AnimeImageSmallHeight,
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Quality: AnimeImageJPEGQuality + AnimeImageQualityBonusLowDPI + AnimeImageQualityBonusSmall,
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},
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// WebP - Large
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&imageserver.WebPFile{
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Directory: path.Join(Root, "images/anime/large/"),
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Width: AnimeImageLargeWidth,
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Height: AnimeImageLargeHeight,
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Quality: AnimeImageWebPQuality + AnimeImageQualityBonusLowDPI + AnimeImageQualityBonusLarge,
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},
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// WebP - Medium
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&imageserver.WebPFile{
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Directory: path.Join(Root, "images/anime/medium/"),
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Width: AnimeImageMediumWidth,
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Height: AnimeImageMediumHeight,
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Quality: AnimeImageWebPQuality + AnimeImageQualityBonusLowDPI + AnimeImageQualityBonusMedium,
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},
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// WebP - Small
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&imageserver.WebPFile{
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Directory: path.Join(Root, "images/anime/small/"),
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Width: AnimeImageSmallWidth,
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Height: AnimeImageSmallHeight,
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Quality: AnimeImageWebPQuality + AnimeImageQualityBonusLowDPI + AnimeImageQualityBonusSmall,
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},
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}
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// Define the high DPI anime image outputs
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var animeImageOutputsHighDPI = []imageserver.Output{
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// JPEG - Large
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&imageserver.JPEGFile{
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Directory: path.Join(Root, "images/anime/large/"),
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Width: AnimeImageLargeWidth * 2,
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Height: AnimeImageLargeHeight * 2,
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Quality: AnimeImageJPEGQuality + AnimeImageQualityBonusLarge,
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},
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// JPEG - Medium
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&imageserver.JPEGFile{
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Directory: path.Join(Root, "images/anime/medium/"),
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Width: AnimeImageMediumWidth * 2,
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Height: AnimeImageMediumHeight * 2,
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Quality: AnimeImageJPEGQuality + AnimeImageQualityBonusMedium,
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},
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// JPEG - Small
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&imageserver.JPEGFile{
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Directory: path.Join(Root, "images/anime/small/"),
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Width: AnimeImageSmallWidth * 2,
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Height: AnimeImageSmallHeight * 2,
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Quality: AnimeImageJPEGQuality + AnimeImageQualityBonusSmall,
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},
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// WebP - Large
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&imageserver.WebPFile{
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Directory: path.Join(Root, "images/anime/large/"),
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Width: AnimeImageLargeWidth * 2,
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Height: AnimeImageLargeHeight * 2,
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Quality: AnimeImageWebPQuality + AnimeImageQualityBonusLarge,
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},
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// WebP - Medium
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&imageserver.WebPFile{
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Directory: path.Join(Root, "images/anime/medium/"),
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Width: AnimeImageMediumWidth * 2,
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Height: AnimeImageMediumHeight * 2,
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Quality: AnimeImageWebPQuality + AnimeImageQualityBonusMedium,
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},
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// WebP - Small
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&imageserver.WebPFile{
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Directory: path.Join(Root, "images/anime/small/"),
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Width: AnimeImageSmallWidth * 2,
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Height: AnimeImageSmallHeight * 2,
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Quality: AnimeImageWebPQuality + AnimeImageQualityBonusSmall,
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},
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}
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// AnimeImage ...
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type AnimeImage struct {
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Extension string `json:"extension"`
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Width int `json:"width"`
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Height int `json:"height"`
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AverageColor HSLColor `json:"averageColor"`
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LastModified int64 `json:"lastModified"`
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}
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// SetImageBytes accepts a byte buffer that represents an image file and updates the anime image.
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func (anime *Anime) SetImageBytes(data []byte) error {
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// Decode
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img, format, err := image.Decode(bytes.NewReader(data))
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if err != nil {
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return err
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}
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return anime.SetImage(&imageserver.MetaImage{
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Image: img,
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Format: format,
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Data: data,
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})
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}
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// SetImage sets the anime image to the given MetaImage.
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func (anime *Anime) SetImage(metaImage *imageserver.MetaImage) error {
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var lastError error
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// Save the different image formats and sizes in low DPI
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for _, output := range animeImageOutputs {
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err := output.Save(metaImage, anime.ID)
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if err != nil {
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lastError = err
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}
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}
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// Save the different image formats and sizes in high DPI
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for _, output := range animeImageOutputsHighDPI {
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err := output.Save(metaImage, anime.ID+"@2")
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if err != nil {
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lastError = err
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}
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}
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anime.Image.Extension = metaImage.Extension()
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anime.Image.Width = metaImage.Image.Bounds().Dx()
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anime.Image.Height = metaImage.Image.Bounds().Dy()
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anime.Image.AverageColor = GetAverageColor(metaImage.Image)
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anime.Image.LastModified = time.Now().Unix()
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return lastError
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}
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