smacker

package

v0.1.0 Latest Latest Go to latest Published: Jun 14, 2026 License: MIT Imports: 7 Imported by: 0

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Valid go.mod file
Redistributable license
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Stable version
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Repository

github.com/coreprime/kbot

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Documentation ¶

Index ¶

Constants
func ConvertFromMP4(mp4Path, smkPath string) error
func ConvertToMP4(smkPath, mp4Path string) error
func FFmpegAvailable() bool
func StreamToMP4(smkPath string) (string, error)
type Header
type Reader
- func OpenReader(path string) (*Reader, error)

Constants ¶

View Source

const (
	SignatureSMK2 = 0x324B4D53 // "SMK2" as little-endian uint32
	SignatureSMK4 = 0x344B4D53 // "SMK4" as little-endian uint32
	HeaderSize    = 104        // Minimum header size
)

Smacker file header constants

Variables ¶

This section is empty.

Functions ¶

func ConvertFromMP4 ¶

func ConvertFromMP4(mp4Path, smkPath string) error

ConvertFromMP4 converts an MP4 file to Smacker format using FFmpeg

func ConvertToMP4 ¶

func ConvertToMP4(smkPath, mp4Path string) error

ConvertToMP4 converts a Smacker video file to MP4 using FFmpeg This is a practical implementation using FFmpeg as it has native Smacker support

func FFmpegAvailable ¶

func FFmpegAvailable() bool

FFmpegAvailable reports whether an ffmpeg binary is on the PATH.

func StreamToMP4 ¶

func StreamToMP4(smkPath string) (string, error)

StreamToMP4 converts a Smacker file to MP4 and returns the output path Useful for web streaming - converts on-demand

Types ¶

type Header ¶

type Header struct {
	Signature    uint32 // Should be "SMK2" or "SMK4"
	Width        uint32
	Height       uint32
	Frames       uint32
	FrameRate    int32 // Microseconds per frame (negative = frames per second)
	Flags        uint32
	AudioSize    [7]uint32
	TreesSize    uint32
	MMapSize     uint32
	MClrSize     uint32
	FullSize     uint32
	TypeSize     uint32
	AudioRate    [7]uint32
	AudioFlags   [7]uint32 // Lower 2 bytes: format, upper: channels
	FrameSizes   []uint32  // Array of frame sizes
	FrameTypes   []byte    // Array of frame types
	HuffmanTrees []byte    // Huffman trees data
	RingFrame    uint32
}

Header represents a Smacker video file header

type Reader ¶

type Reader struct {
	// contains filtered or unexported fields
}

Reader wraps a Smacker video file for reading

func OpenReader ¶

func OpenReader(path string) (*Reader, error)

OpenReader opens a Smacker video file for reading

func (*Reader) Close ¶

func (r *Reader) Close() error

Close closes the reader

func (*Reader) Duration ¶

func (r *Reader) Duration() float64

Duration returns video duration in seconds

func (*Reader) FrameCount ¶

func (r *Reader) FrameCount() int

FrameCount returns total number of frames

func (*Reader) FrameRate ¶

func (r *Reader) FrameRate() float64

FrameRate returns frames per second

func (*Reader) HasAudio ¶

func (r *Reader) HasAudio() bool

HasAudio returns true if the video has any audio tracks

func (r *Reader) Header() *Header

Header returns the video header

func (*Reader) Height ¶

func (r *Reader) Height() int

Height returns video height

func (*Reader) Info ¶

func (r *Reader) Info() string

Info returns a formatted string with video information

func (*Reader) SignatureString ¶

func (r *Reader) SignatureString() string

SignatureString returns the four-character signature ("SMK2" or "SMK4").

func (*Reader) Width ¶

func (r *Reader) Width() int

Width returns video width

Source Files ¶

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