webpanimation

package module
v0.0.0-...-92fd539 Latest Latest
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 Go to latest Published: Jul 30, 2022 License: BSD-3-Clause Imports: 7 Imported by: 0

README

webpanimation

Package is binding to libwebp providing methods to create webp animations from golang image.Image interface. It also allows decoding of webp animations into single frames that implement image.Image

Origin

This repo is a fork of github.com/sizeofint/webpanimation.

It adds decoding capabilities to already existing encoding capabilities.

Installing

go get github.com/kmicki/webpanimation

Examples

Check out examples folder.

No examples of decoding yet.

Dependencies

The only dependency is libwebp, it source code are embeded in package so no additional installations are needed on machine. It can be updated to latest libwebp via ./generate_from_libwebp.py /path/to/clean/libwebp/src/

Documentation

Index

Constants

View Source 
const (
	WebpMuxAbiVersion     = 0x0108
	WebpEncoderAbiVersion = 0x020f
	WebpDemuxAbiVersion   = 0x0107
)
View Source 
const (
	WebpMuxOk              = WebPMuxError(C.WEBP_MUX_OK)
	WebpMuxNotFound        = WebPMuxError(C.WEBP_MUX_NOT_FOUND)
	WebpMuxInvalidArgument = WebPMuxError(C.WEBP_MUX_INVALID_ARGUMENT)
	WebpMuxBadData         = WebPMuxError(C.WEBP_MUX_BAD_DATA)
	WebpMuxMemoryError     = WebPMuxError(C.WEBP_MUX_MEMORY_ERROR)
	WebpMuxNotEnoughData   = WebPMuxError(C.WEBP_MUX_NOT_ENOUGH_DATA)
)

Variables

This section is empty.

Functions

func DecodeAllFrames 

func DecodeAllFrames(animDecoded *WebpAnimationDecoded) error

func DecodeNextFrame 

func DecodeNextFrame(animDecoded *WebpAnimationDecoded) bool

Get next frame without and insert into animDecoded.Frames

func DecodeRemainingFrames 

func DecodeRemainingFrames(animDecoded *WebpAnimationDecoded) error

func DeleteWebPData 

func DeleteWebPData(webPData *WebPData)

func ReleaseDecoder 

func ReleaseDecoder(decoded *WebpAnimationDecoded)

func WebPAnimDecoderDelete 

func WebPAnimDecoderDelete(webPAnimDecoder *WebPAnimDecoder)

func WebPAnimDecoderGetInfo 

func WebPAnimDecoderGetInfo(webPAnimDecoder *WebPAnimDecoder, webPAnimInfo *WebPAnimInfo) bool

func WebPAnimDecoderGetNext 

func WebPAnimDecoderGetNext(webPAnimDecoder *WebPAnimDecoder, buffer *([]byte), timestamp *int, size int) bool

func WebPAnimDecoderReset 

func WebPAnimDecoderReset(webPAnimDecoder *WebPAnimDecoder)

func WebPAnimEncoderAdd 

func WebPAnimEncoderAdd(webPAnimEncoder *WebPAnimEncoder, webPPicture *WebPPicture, timestamp int, webpcfg WebPConfig) int

func WebPAnimEncoderAssemble 

func WebPAnimEncoderAssemble(webPAnimEncoder *WebPAnimEncoder, webPData *WebPData) int

func WebPAnimEncoderDelete 

func WebPAnimEncoderDelete(webPAnimEncoder *WebPAnimEncoder)

func WebPAnimEncoderOptionsInitInternal 

func WebPAnimEncoderOptionsInitInternal(webPAnimEncoderOptions *WebPAnimEncoderOptions) int

func WebPConfigInitInternal 

func WebPConfigInitInternal(config WebPConfig) int

func WebPDataClear 

func WebPDataClear(webPData *WebPData)

func WebPDataInit 

func WebPDataInit(webPData *WebPData)

func WebPMuxDelete 

func WebPMuxDelete(webPMux *WebPMux)

func WebPPictureFree 

func WebPPictureFree(webPPicture *WebPPicture)

func WebPPictureImportRGBA 

func WebPPictureImportRGBA(data []byte, stride int, webPPicture *WebPPicture) error

func WebPPictureInit 

func WebPPictureInit(webPPicture *WebPPicture) int

Types

type WebPAnimDecoder 

type WebPAnimDecoder C.WebPAnimDecoder

func WebPAnimDecoderNew 

func WebPAnimDecoderNew(webPData *WebPData) *WebPAnimDecoder

type WebPAnimDecoderOptions 

type WebPAnimDecoderOptions C.WebPAnimDecoderOptions

type WebPAnimEncoder 

type WebPAnimEncoder C.WebPAnimEncoder

func WebPAnimEncoderNewInternal 

func WebPAnimEncoderNewInternal(width, height int, webPAnimEncoderOptions *WebPAnimEncoderOptions) *WebPAnimEncoder

type WebPAnimEncoderOptions 

type WebPAnimEncoderOptions C.WebPAnimEncoderOptions

func (*WebPAnimEncoderOptions) GetAnimParams 

func (encOptions *WebPAnimEncoderOptions) GetAnimParams() WebPMuxAnimParams

func (*WebPAnimEncoderOptions) SetAllowMixed 

func (encOptions *WebPAnimEncoderOptions) SetAllowMixed(v int)

func (*WebPAnimEncoderOptions) SetAnimParams 

func (encOptions *WebPAnimEncoderOptions) SetAnimParams(v WebPMuxAnimParams)

func (*WebPAnimEncoderOptions) SetKmax 

func (encOptions *WebPAnimEncoderOptions) SetKmax(v int)

func (*WebPAnimEncoderOptions) SetKmin 

func (encOptions *WebPAnimEncoderOptions) SetKmin(v int)

func (*WebPAnimEncoderOptions) SetMinimizeSize 

func (encOptions *WebPAnimEncoderOptions) SetMinimizeSize(v int)

func (*WebPAnimEncoderOptions) SetVerbose 

func (encOptions *WebPAnimEncoderOptions) SetVerbose(v int)

type WebPAnimInfo 

type WebPAnimInfo C.WebPAnimInfo

func (WebPAnimInfo) GetBgColor 

func (wpi WebPAnimInfo) GetBgColor() uint32

func (WebPAnimInfo) GetFrameCnt 

func (wpi WebPAnimInfo) GetFrameCnt() uint32

func (WebPAnimInfo) GetHeight 

func (wpi WebPAnimInfo) GetHeight() uint32

func (WebPAnimInfo) GetLoopCount 

func (wpi WebPAnimInfo) GetLoopCount() uint32

func (WebPAnimInfo) GetWidth 

func (wpi WebPAnimInfo) GetWidth() uint32

type WebPConfig 

type WebPConfig interface {
	SetLossless(v int)
	GetLossless() int
	SetMethod(v int)
	SetImageHint(v int)
	SetTargetSize(v int)
	SetTargetPSNR(v float32)
	SetSegments(v int)
	SetSnsStrength(v int)
	SetFilterStrength(v int)
	SetFilterSharpness(v int)
	SetAutofilter(v int)
	SetAlphaCompression(v int)
	SetAlphaFiltering(v int)
	SetPass(v int)
	SetShowCompressed(v int)
	SetPreprocessing(v int)
	SetPartitions(v int)
	SetPartitionLimit(v int)
	SetEmulateJpegSize(v int)
	SetThreadLevel(v int)
	SetLowMemory(v int)
	SetNearLossless(v int)
	SetExact(v int)
	SetUseDeltaPalette(v int)
	SetUseSharpYuv(v int)
	SetAlphaQuality(v int)
	SetFilterType(v int)
	SetQuality(v float32)
	// contains filtered or unexported methods
}

func NewWebpConfig 

func NewWebpConfig() WebPConfig

NewWebpConfig create webpconfig instance

type WebPData 

type WebPData C.WebPData

func GenerateWebPData 

func GenerateWebPData(data []byte, size uint) *WebPData

func (WebPData) GetBytes 

func (wpd WebPData) GetBytes() []byte

type WebPFrame 

type WebPFrame struct {
	Image     image.Image
	Timestamp int
}

func GetNextFrame 

func GetNextFrame(animDecoded *WebpAnimationDecoded) (*WebPFrame, bool)

Get next frame without inserting into animDecoded.Frames

type WebPMux 

type WebPMux C.WebPMux

func WebPMuxCreateInternal 

func WebPMuxCreateInternal(webPData *WebPData, copyData int) *WebPMux

type WebPMuxAnimParams 

type WebPMuxAnimParams C.WebPMuxAnimParams

func (*WebPMuxAnimParams) SetBgcolor 

func (wmap *WebPMuxAnimParams) SetBgcolor(v uint32)

func (*WebPMuxAnimParams) SetLoopCount 

func (wmap *WebPMuxAnimParams) SetLoopCount(v int)

type WebPMuxError 

type WebPMuxError int

func WebPMuxAssemble 

func WebPMuxAssemble(webPMux *WebPMux, webPData *WebPData) WebPMuxError

func WebPMuxGetAnimationParams 

func WebPMuxGetAnimationParams(webPMux *WebPMux, webPMuxAnimParams *WebPMuxAnimParams) WebPMuxError

func WebPMuxSetAnimationParams 

func WebPMuxSetAnimationParams(webPMux *WebPMux, webPMuxAnimParams *WebPMuxAnimParams) WebPMuxError

type WebPPicture 

type WebPPicture C.WebPPicture

func (WebPPicture) GetHeight 

func (wpp WebPPicture) GetHeight() int

func (WebPPicture) GetWidth 

func (wpp WebPPicture) GetWidth() int

func (*WebPPicture) SetHeight 

func (wpp *WebPPicture) SetHeight(v int)

func (*WebPPicture) SetUseArgb 

func (wpp *WebPPicture) SetUseArgb(v int)

func (*WebPPicture) SetWidth 

func (wpp *WebPPicture) SetWidth(v int)

type WebpAnimation 

type WebpAnimation struct {
	WebPAnimEncoderOptions *WebPAnimEncoderOptions
	Width                  int
	Height                 int

	AnimationEncoder *WebPAnimEncoder
	WebPData         *WebPData
	WebPMux          *WebPMux
	WebPPictures     []*WebPPicture
	// contains filtered or unexported fields
}

func NewWebpAnimation 

func NewWebpAnimation(width, height, loopCount int) *WebpAnimation

NewWebpAnimation Initialize animation

func (*WebpAnimation) AddFrame 

func (wpa *WebpAnimation) AddFrame(img image.Image, timestamp int, webpcfg WebPConfig) error

AddFrame add frame to animation

func (*WebpAnimation) Encode 

func (wpa *WebpAnimation) Encode(w io.Writer) error

Encode encode animation

func (*WebpAnimation) GetFrames 

func (wpa *WebpAnimation) GetFrames() (frames []image.Image, err error)

Get Frame

func (*WebpAnimation) ReleaseMemory 

func (wpa *WebpAnimation) ReleaseMemory()

ReleaseMemory release memory

type WebpAnimationDecoded 

type WebpAnimationDecoded struct {
	Width     int
	Height    int
	LoopCount int
	FrameCnt  int
	Frames    []WebPFrame
	Decoder   *WebPAnimDecoder
	WebPData  *WebPData
}

func DecodeAll 

func DecodeAll(r io.Reader) (*WebpAnimationDecoded, error)

Decode all frames

func GetInfo 

func GetInfo(r io.Reader) (*WebpAnimationDecoded, error)

Get only info, without decoded frames

Source Files

View all Source files

Directories

Path Synopsis
examples
gif-to-webp
simple-animation

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