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Documentation

Index

• func AdjustProperties(srcWidth int, srcHeight int, desiredWidth int, desiredHeight int, ...) (bool, int, int, bool, string)
• func ApplyOrientation(src image.Image, orientation *ExifOrientation) image.Image
• func Encode(ctx rcontext.RequestContext, w io.Writer, img image.Image, ...) error
• func FastSampleAudio(stream beep.StreamSeekCloser, numSamples int) ([][2]float64, error)
• func GetID3Tags(b io.Reader) (tag.Metadata, io.ReadSeekCloser, error)
• func MakeThumbnail(src image.Image, method string, width int, height int) (image.Image, error)
• type EncodeSource
• type ExifOrientation
  • func ExtractExifOrientation(r io.Reader) *ExifOrientation
  • func GetExifOrientation(img io.Reader) (*ExifOrientation, error)

Functions

func AdjustProperties

func AdjustProperties(srcWidth int, srcHeight int, desiredWidth int, desiredHeight int, wantAnimated bool, method string) (bool, int, int, bool, string)

func ApplyOrientation

func ApplyOrientation(src image.Image, orientation *ExifOrientation) image.Image

func Encode

func Encode(ctx rcontext.RequestContext, w io.Writer, img image.Image, sourceFlags ...EncodeSource) error

func FastSampleAudio

func FastSampleAudio(stream beep.StreamSeekCloser, numSamples int) ([][2]float64, error)

func GetID3Tags

func GetID3Tags(b io.Reader) (tag.Metadata, io.ReadSeekCloser, error)

func MakeThumbnail

func MakeThumbnail(src image.Image, method string, width int, height int) (image.Image, error)

Types

type EncodeSource

type EncodeSource int

const (
	GenericSource EncodeSource = 0
	JpegSource    EncodeSource = 1
)

type ExifOrientation

type ExifOrientation struct {
	RotateDegrees  int // should be 0, 90, 180, or 270
	FlipVertical   bool
	FlipHorizontal bool
}

func ExtractExifOrientation

func ExtractExifOrientation(r io.Reader) *ExifOrientation

func GetExifOrientation

func GetExifOrientation(img io.Reader) (*ExifOrientation, error)