resize

func AddImageThumb ¶

func AddImageThumb(media Media, size int, c Conf, wg *sync.WaitGroup, errChan chan<- error)

AddImageThumb creates a request to generate a single thumbnail from the original image.

func CreateOriginalFilePath ¶

func CreateOriginalFilePath(path string, c Conf) string

CreateOriginalFilePath creates a string of the absolute path of the original media.

func CreateSaveImageThumb ¶

func CreateSaveImageThumb(path string, media Media, size int, c Conf) ([]byte, error)

CreateSaveImageThumb opens the original file for image media types.

func CreateSaveVideoThumb ¶

func CreateSaveVideoThumb(path string, media Media, size int, c Conf) ([]byte, error)

CreateSaveVideoThumb saves and returns a thumbnail for video media types.

func CreateTempDir ¶

func CreateTempDir() (string, error)

CreateTempDir creates a temporary directory and returns its path

func CreateThumbFilePath ¶

func CreateThumbFilePath(hash uint32, size int, c Conf) string

createThumbFilePath creates a string of the path where the thumb will live.

func CreateThumbFromDisk ¶

func CreateThumbFromDisk(hash uint32, size int, c Conf) ([]byte, error)

CreateThumbFromDisk checks for an existing thumbnail in the cache directory. If it does not exist, a new thumbnail is created and saved.

func CreateVideoThumb ¶

func CreateVideoThumb(path string) (io.Reader, error)

CreateVideoThumb creates a thumbnail for video media types.

func DecodeImage ¶

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

func GenerateSingleThumb ¶

func GenerateSingleThumb(path string, media Media, size int, c Conf) ([]byte, error)

GenerateSingleThumb serves a generated thumbnail from the original media.

func GetFFMPEGThumb ¶

func GetFFMPEGThumb(video string, frameNum int) (io.Reader, error)

GetFFMPEGThumb serves a frame from a video.

func GetThumbFromResizeService ¶

func GetThumbFromResizeService(media Media, size int, c Conf) ([]byte, error)

GetThumbFromResizeService requests a thumbnail from the resize service, serves the response, and then saves it to disk.

func HandleResize ¶

func HandleResize(regenThumb bool, media Media, c Conf) (int, error)

HandleResize coordinates the parallel (go routine) generation of all non-existing thumbnails.

func HandleThumb ¶

func HandleThumb(hash uint32, size int, c Conf) ([]byte, error)

HandleThumb determines whether to request a thumb from the resize service or check for one on disk.

func ResizeImageUpload ¶

func ResizeImageUpload(w http.ResponseWriter, r *http.Request, c Conf) error

ResizeImageUpload accepts an image via POST, resizes it based on the size query param, and serves the resulting image.

func SafeImageOperation ¶

func SafeImageOperation(operation func() ([]byte, error)) (file []byte, err error)

SafeImageOperation executes an image operation function and recovers from panics

func SaveImageToDisk ¶

func SaveImageToDisk(path string, image image.Image, c Conf) error

SaveImageToDisk saves an image to disk at a specified location after confirming the dir exists.