imageio

package module

v0.0.0-...-4aaf21e Latest Latest Go to latest Published: Oct 19, 2016 License: MIT Imports: 19 Imported by: 0

Details

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Repository

github.com/openatx/go-imageio

Links

Open Source Insights

README ¶

go-imageio

Golang wraps for image IO read and write.

Usages

mp4 := NewMp4("test.mp4", &Options{})
	for i := 0; i < 100; i++ {
		err := mp4.WriteImage("camera.png")
		if err != nil {
			log.Printf(err)
		}
	}

Result

2016-10-19

System: Win 7 Memory: 8G CPU: Core(TM) i5-4570 3.20GHz

-- Write --
BenchmarkWriteJPEGImageFile                100          25.75 ms/op
BenchmarkWritePNGImageFile                  20          60.60 ms/op
BenchmarkWriteJPEGImage                    100          17.11 ms/op
BenchmarkWritePNGImage                     100          14.33 ms/op
-- Decode --
BenchmarkDecodeJPEGImage                   100          17.54 ms/op
BenchmarkDecodePNGImage                     20          57.90 ms/op

2016-10-19

Raspberry 2

-- Write --
BenchmarkWriteJPEGImageFile                  2         648 ms/op
BenchmarkWritePNGImageFile                   1        1271 ms/op
BenchmarkWriteJPEGImage                      3         436 ms/op
BenchmarkWritePNGImage                       3         400 ms/op
-- Decode --
BenchmarkDecodeJPEGImage                     2         510 ms/op
BenchmarkDecodePNGImage                      1        1229 ms/op

Reference

LICENSE

Under LICENSE MIT

Documentation ¶

Index ¶

Constants
Variables
func CheckFFmpegVersion(filepath string) (bool, error)
func CheckIfFFmpegInPATH() (bool, error)
func CheckIfFileExecutable(filepath string) (bool, error)
func GetFFmpegExe() (string, error)
func GetPlatform() (platform string)
func GetRomoteFile(fname string) error
func LoadImage(path string) (image.Image, error)
func LoadImageBitmap(imgfile image.Image) []uint8
type Options
type PassThru
- func (pt *PassThru) Read(p []byte) (int, error)
type Video
- func NewVideo(output string, op *Options) *Video

Constants ¶

View Source

const (
	RemoteResourceUrl = "https://github.com/imageio/imageio-binaries/raw/master/ffmpeg"
)

Variables ¶

View Source

var (
	FnamePerPlatform = map[string]string{
		"osx32":   "ffmpeg.osx",
		"osx64":   "ffmpeg.osx",
		"win32":   "ffmpeg.win32.exe",
		"win64":   "ffmpeg.win32.exe",
		"linux32": "ffmpeg.linux32",
		"linux64": "ffmpeg.linux64",
	}
)

Functions ¶

func CheckFFmpegVersion ¶

func CheckFFmpegVersion(filepath string) (bool, error)

func CheckIfFFmpegInPATH ¶

func CheckIfFFmpegInPATH() (bool, error)

Check if ffmpeg is in System PATH

func CheckIfFileExecutable ¶

func CheckIfFileExecutable(filepath string) (bool, error)

Check if the exe file is excutable.

func GetFFmpegExe ¶

func GetFFmpegExe() (string, error)

Ensure we have our version of the binary freeimage lib.

func GetPlatform ¶

func GetPlatform() (platform string)

Get a string that specifies the platform more specific than The result can be: linux32, linux64, win32, win64, osx32, osx64. Other platforms may be added in the future.

func GetRomoteFile ¶

func GetRomoteFile(fname string) error

Get a filename for the local version of a file from the web

func LoadImage ¶

func LoadImage(path string) (image.Image, error)

Load image.

func LoadImageBitmap ¶

func LoadImageBitmap(imgfile image.Image) []uint8

Load Image Bitmap.

Types ¶

type Options ¶

type Options struct {
	FPS         int
	Codec       string
	Pixelformat string
	Pixfmt      string
}

Mp4 video convert options.

type PassThru ¶

type PassThru struct {
	io.Reader
	CurrentSize int // Current # of bytes transferred
	TotalSize   int // Total # of bytes transferred
}

The results from individual calls to it.

func (*PassThru) Read ¶

func (pt *PassThru) Read(p []byte) (int, error)

Read 'overrides' the underlying io.Reader's Read method. This is the one that will be called by io.Copy(). We simply use it to keep track of byte counts and then forward the call.

type Video ¶

type Video struct {
	Cmd       *exec.Cmd
	StdinWr   io.WriteCloser
	Dimension string
	ExePath   string
	Output    string
	Option    *Options
}

Video struct.

func NewVideo ¶

func NewVideo(output string, op *Options) *Video

New Instance.

func (*Video) Close ¶

func (this *Video) Close() error

Close ffmpeg

func (*Video) WriteImage ¶

func (this *Video) WriteImage(image image.Image) error

Write image by image.Image

func (*Video) WriteImageFile ¶

func (this *Video) WriteImageFile(imagePath string) error

Write image by file path.

Source Files ¶

View all Source files

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