/
media_type.go
343 lines (300 loc) · 6.79 KB
/
media_type.go
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package media_type
import (
"io"
"os"
"path"
"path/filepath"
"strings"
"github.com/h2non/filetype"
"github.com/photoview/photoview/api/scanner/media_encoding/executable_worker"
"github.com/photoview/photoview/api/scanner/scanner_utils"
"github.com/pkg/errors"
)
type MediaType string
const (
TypeJpeg MediaType = "image/jpeg"
TypePng MediaType = "image/png"
TypeTiff MediaType = "image/tiff"
TypeWebp MediaType = "image/webp"
TypeBmp MediaType = "image/bmp"
TypeHeic MediaType = "image/heic"
// Raw formats
TypeDNG MediaType = "image/x-adobe-dng"
TypeARW MediaType = "image/x-sony-arw"
TypeSR2 MediaType = "image/x-sony-sr2"
TypeSRF MediaType = "image/x-sony-srf"
TypeCR2 MediaType = "image/x-canon-cr2"
TypeCR3 MediaType = "image/x-canon-cr3"
TypeCRW MediaType = "image/x-canon-crw"
TypeERF MediaType = "image/x-epson-erf"
TypeDCS MediaType = "image/x-kodak-dcs"
TypeDRF MediaType = "image/x-kodak-drf"
TypeDCR MediaType = "image/x-kodak-dcr"
TypeK25 MediaType = "image/x-kodak-k25"
TypeKDC MediaType = "image/x-kodak-kdc"
TypeMRW MediaType = "image/x-minolta-mrw"
TypeMDC MediaType = "image/x-minolta-mdc"
TypeNEF MediaType = "image/x-nikon-nef"
TypeNRW MediaType = "image/x-nikon-nrw"
TypeORF MediaType = "image/x-olympus-orf"
TypePEF MediaType = "image/x-pentax-pef"
TypeRAF MediaType = "image/x-fuji-raf"
TypeRAW MediaType = "image/x-panasonic-raw"
TypeRW2 MediaType = "image/x-panasonic-rw2"
TypeGPR MediaType = "image/x-gopro-gpr"
Type3FR MediaType = "image/x-hasselblad-3fr"
TypeFFF MediaType = "image/x-hasselblad-fff"
TypeMEF MediaType = "image/x-mamiya-mef"
TypeCap MediaType = "image/x-phaseone-cap"
TypeIIQ MediaType = "image/x-phaseone-iiq"
TypeMOS MediaType = "image/x-leaf-mos"
TypeRWL MediaType = "image/x-leica-rwl"
TypeSRW MediaType = "image/x-samsung-srw"
// Video formats
TypeMP4 MediaType = "video/mp4"
TypeMPEG MediaType = "video/mpeg"
Type3GP MediaType = "video/3gpp"
Type3G2 MediaType = "video/3gpp2"
TypeOGG MediaType = "video/ogg"
TypeWMV MediaType = "video/x-ms-wmv"
TypeAVI MediaType = "video/x-msvideo"
TypeWEBM MediaType = "video/webm"
TypeMOV MediaType = "video/quicktime"
TypeTS MediaType = "video/mp2t"
TypeMTS MediaType = "video/MP2T"
TypeMKV MediaType = "video/x-matroska"
)
var SupportedMimetypes = [...]MediaType{
TypeJpeg,
TypePng,
TypeTiff,
TypeWebp,
TypeBmp,
TypeHeic,
}
var WebMimetypes = [...]MediaType{
TypeJpeg,
TypePng,
TypeWebp,
TypeBmp,
}
var RawMimeTypes = [...]MediaType{
TypeDNG,
TypeARW,
TypeSR2,
TypeSRF,
TypeCR2,
TypeCR3,
TypeCRW,
TypeERF,
TypeDCS,
TypeDRF,
TypeDCR,
TypeK25,
TypeKDC,
TypeMRW,
TypeMDC,
TypeNEF,
TypeNRW,
TypeORF,
TypePEF,
TypeRAF,
TypeRAW,
TypeRW2,
TypeGPR,
Type3FR,
TypeFFF,
TypeMEF,
TypeCap,
TypeIIQ,
TypeMOS,
TypeRWL,
TypeSRW,
}
var VideoMimetypes = [...]MediaType{
TypeMP4,
TypeMPEG,
Type3GP,
Type3G2,
TypeOGG,
TypeWMV,
TypeAVI,
TypeWEBM,
TypeMOV,
TypeTS,
TypeMTS,
TypeMKV,
}
// WebVideoMimetypes are video types that can be played directly in the browser without transcoding
var WebVideoMimetypes = [...]MediaType{
TypeMP4,
TypeMPEG,
TypeWEBM,
TypeOGG,
}
var fileExtensions = map[string]MediaType{
".jpg": TypeJpeg,
".jpeg": TypeJpeg,
".png": TypePng,
".tif": TypeTiff,
".tiff": TypeTiff,
".bmp": TypeBmp,
".heic": TypeHeic,
// RAW formats
".dng": TypeDNG,
".arw": TypeARW,
".sr2": TypeSR2,
".srf": TypeSRF,
".srw": TypeSRW,
".cr2": TypeCR2,
".cr3": TypeCR3,
".crw": TypeCRW,
".erf": TypeERF,
".dcr": TypeDCR,
".k25": TypeK25,
".kdc": TypeKDC,
".mrw": TypeMRW,
".nef": TypeNEF,
".nrw": TypeNRW,
".mdc": TypeMDC,
".mef": TypeMEF,
".orf": TypeORF,
".pef": TypePEF,
".raf": TypeRAF,
".raw": TypeRAW,
".rw2": TypeRW2,
".dcs": TypeDCS,
".drf": TypeDRF,
".gpr": TypeGPR,
".3fr": Type3FR,
".fff": TypeFFF,
".cap": TypeCap,
".iiq": TypeIIQ,
".mos": TypeMOS,
".rwl": TypeRWL,
// Video formats
".mp4": TypeMP4,
".m4v": TypeMP4,
".mpeg": TypeMPEG,
".3gp": Type3GP,
".3g2": Type3G2,
".ogv": TypeOGG,
".wmv": TypeWMV,
".avi": TypeAVI,
".webm": TypeWEBM,
".mov": TypeMOV,
".qt": TypeMOV,
".ts": TypeTS,
".m2ts": TypeMTS,
".mts": TypeMTS,
".mkv": TypeMKV,
}
func (imgType *MediaType) IsRaw() bool {
for _, raw_mime := range RawMimeTypes {
if raw_mime == *imgType {
return true
}
}
return false
}
func (imgType *MediaType) IsWebCompatible() bool {
for _, web_mime := range WebMimetypes {
if web_mime == *imgType {
return true
}
}
for _, web_mime := range WebVideoMimetypes {
if web_mime == *imgType {
return true
}
}
return false
}
func (imgType *MediaType) IsVideo() bool {
for _, video_mime := range VideoMimetypes {
if video_mime == *imgType {
return true
}
}
return false
}
func (imgType *MediaType) IsBasicTypeSupported() bool {
for _, img_mime := range SupportedMimetypes {
if img_mime == *imgType {
return true
}
}
return false
}
// IsSupported determines if the given type can be processed
func (imgType *MediaType) IsSupported() bool {
if imgType.IsBasicTypeSupported() {
return true
}
if executable_worker.DarktableCli.IsInstalled() && imgType.IsRaw() {
return true
}
if executable_worker.FfmpegCli.IsInstalled() && imgType.IsVideo() {
return true
}
return false
}
func GetExtensionMediaType(ext string) (MediaType, bool) {
result, found := fileExtensions[strings.ToLower(ext)]
return result, found
}
func GetMediaType(path string) (*MediaType, error) {
ext := filepath.Ext(path)
fileExtType, found := GetExtensionMediaType(ext)
if found {
if fileExtType.IsSupported() {
return &fileExtType, nil
} else {
return nil, nil
}
}
// If extension was not recognized try to read file header
file, err := os.Open(path)
if err != nil {
return nil, errors.Wrapf(err, "could not open file to determine content-type %s", path)
}
defer file.Close()
head := make([]byte, 261)
if _, err := file.Read(head); err != nil {
if err == io.EOF {
return nil, nil
}
return nil, errors.Wrapf(err, "could not read file to determine content-type: %s", path)
}
_imgType, err := filetype.Image(head)
if err != nil {
return nil, nil
}
imgType := MediaType(_imgType.MIME.Value)
if imgType.IsSupported() {
return &imgType, nil
}
return nil, nil
}
func (mediaType MediaType) FileExtensions() []string {
var extensions []string
for ext, extType := range fileExtensions {
if extType == mediaType {
extensions = append(extensions, ext)
extensions = append(extensions, strings.ToUpper(ext))
}
}
return extensions
}
func RawCounterpart(imagePath string) *string {
pathWithoutExt := strings.TrimSuffix(imagePath, path.Ext(imagePath))
for _, rawType := range RawMimeTypes {
for _, ext := range rawType.FileExtensions() {
testPath := pathWithoutExt + ext
if scanner_utils.FileExists(testPath) {
return &testPath
}
}
}
return nil
}