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Constants ¶
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const ( // The maximum width of the artwork to extract. If the image is larger than this, it will be resized, // but the aspect ratio will be preserved. If the image is smaller than this, it will be returned as is, // but potentially converted to a jpeg. MaxWidth = 640 // Formats that should be encoded as PNG when resized or re-encoded. All other formats are encoded as JPEG. PNGFormats = "png,gif,bmp,tiff" )
Variables ¶
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Functions ¶
func ExtractArtwork ¶
ExtractArtwork decodes image data and returns it as a gomedia.Metadata entry under key, resized to at most MaxWidth (preserving aspect ratio) and re-encoded as PNG or JPEG as appropriate. Already-jpeg/png images near the target width are returned unchanged rather than re-encoded. It is shared by the generic image/* artwork handler, for RAW files' embedded thumbnail, and by metadata/audio for embedded cover art.
Types ¶
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