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return very partial image on first upload

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This commit is contained in:
tsmethurst 2022-01-03 17:37:38 +01:00
commit 8abfa7751a
5 changed files with 109 additions and 165 deletions
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143
internal/media/image.go
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@ -43,21 +43,55 @@ const (
thumbnailMaxHeight = 512
)
type imageAndMeta struct {
image []byte
width int
height int
size int
aspect float64
blurhash string
type ImageMeta struct {
image []byte
contentType string
width int
height int
size int
aspect float64
blurhash string
}
func (m *manager) processImage(ctx context.Context, data []byte, contentType string, accountID string) {
func (m *manager) preProcessImage(ctx context.Context, data []byte, contentType string, accountID string) (*Media, error) {
id, err := id.NewRandomULID()
if err != nil {
return nil, err
}
extension := strings.Split(contentType, "/")[1]
attachment := &gtsmodel.MediaAttachment{
ID: id,
UpdatedAt: time.Now(),
URL: uris.GenerateURIForAttachment(accountID, string(TypeAttachment), string(SizeOriginal), id, extension),
Type: gtsmodel.FileTypeImage,
AccountID: accountID,
Processing: 0,
File: gtsmodel.File{
Path: fmt.Sprintf("%s/%s/%s/%s.%s", accountID, TypeAttachment, SizeOriginal, id, extension),
ContentType: contentType,
UpdatedAt: time.Now(),
},
Thumbnail: gtsmodel.Thumbnail{
URL: uris.GenerateURIForAttachment(accountID, string(TypeAttachment), string(SizeSmall), id, mimeJpeg), // all thumbnails are encoded as jpeg,
Path: fmt.Sprintf("%s/%s/%s/%s.%s", accountID, TypeAttachment, SizeSmall, id, mimeJpeg), // all thumbnails are encoded as jpeg,
ContentType: mimeJpeg,
UpdatedAt: time.Now(),
},
Avatar: false,
Header: false,
}
media := &Media{
attachment: attachment,
}
return media, nil
var clean []byte
var err error
var original *imageAndMeta
var small *imageAndMeta
var original *ImageMeta
var small *ImageMeta
switch contentType {
case mimeImageJpeg, mimeImagePng:
@ -79,82 +113,17 @@ func (m *manager) processImage(ctx context.Context, data []byte, contentType str
return nil, err
}
small, err = deriveThumbnail(clean, contentType, thumbnailMaxWidth, thumbnailMaxHeight)
small, err = deriveThumbnail(clean, contentType)
if err != nil {
return nil, fmt.Errorf("error deriving thumbnail: %s", err)
}
// now put it in storage, take a new id for the name of the file so we don't store any unnecessary info about it
extension := strings.Split(contentType, "/")[1]
attachmentID, err := id.NewRandomULID()
if err != nil {
return nil, err
}
originalURL := uris.GenerateURIForAttachment(accountID, string(TypeAttachment), string(SizeOriginal), attachmentID, extension)
smallURL := uris.GenerateURIForAttachment(accountID, string(TypeAttachment), string(SizeSmall), attachmentID, "jpeg") // all thumbnails/smalls are encoded as jpeg
// we store the original...
originalPath := fmt.Sprintf("%s/%s/%s/%s.%s", accountID, TypeAttachment, SizeOriginal, attachmentID, extension)
if err := m.storage.Put(originalPath, original.image); err != nil {
return nil, fmt.Errorf("storage error: %s", err)
}
// and a thumbnail...
smallPath := fmt.Sprintf("%s/%s/%s/%s.jpeg", accountID, TypeAttachment, SizeSmall, attachmentID) // all thumbnails/smalls are encoded as jpeg
if err := m.storage.Put(smallPath, small.image); err != nil {
return nil, fmt.Errorf("storage error: %s", err)
}
attachment := &gtsmodel.MediaAttachment{
ID: attachmentID,
StatusID: "",
URL: originalURL,
RemoteURL: "",
CreatedAt: time.Time{},
UpdatedAt: time.Time{},
Type: gtsmodel.FileTypeImage,
FileMeta: gtsmodel.FileMeta{
Original: gtsmodel.Original{
Width: original.width,
Height: original.height,
Size: original.size,
Aspect: original.aspect,
},
Small: gtsmodel.Small{
Width: small.width,
Height: small.height,
Size: small.size,
Aspect: small.aspect,
},
},
AccountID: accountID,
Description: "",
ScheduledStatusID: "",
Blurhash: small.blurhash,
Processing: 2,
File: gtsmodel.File{
Path: originalPath,
ContentType: contentType,
FileSize: len(original.image),
UpdatedAt: time.Now(),
},
Thumbnail: gtsmodel.Thumbnail{
Path: smallPath,
ContentType: mimeJpeg, // all thumbnails/smalls are encoded as jpeg
FileSize: len(small.image),
UpdatedAt: time.Now(),
URL: smallURL,
RemoteURL: "",
},
Avatar: false,
Header: false,
}
return attachment, nil
}
func decodeGif(b []byte) (*imageAndMeta, error) {
func decodeGif(b []byte) (*ImageMeta, error) {
gif, err := gif.DecodeAll(bytes.NewReader(b))
if err != nil {
return nil, err
@ -166,7 +135,7 @@ func decodeGif(b []byte) (*imageAndMeta, error) {
size := width * height
aspect := float64(width) / float64(height)
return &imageAndMeta{
return &ImageMeta{
image: b,
width: width,
height: height,
@ -175,7 +144,7 @@ func decodeGif(b []byte) (*imageAndMeta, error) {
}, nil
}
func decodeImage(b []byte, contentType string) (*imageAndMeta, error) {
func decodeImage(b []byte, contentType string) (*ImageMeta, error) {
var i image.Image
var err error
@ -201,7 +170,7 @@ func decodeImage(b []byte, contentType string) (*imageAndMeta, error) {
size := width * height
aspect := float64(width) / float64(height)
return &imageAndMeta{
return &ImageMeta{
image: b,
width: width,
height: height,
@ -210,12 +179,12 @@ func decodeImage(b []byte, contentType string) (*imageAndMeta, error) {
}, nil
}
// deriveThumbnail returns a byte slice and metadata for a thumbnail of width x and height y,
// deriveThumbnail returns a byte slice and metadata for a thumbnail
// of a given jpeg, png, or gif, or an error if something goes wrong.
//
// Note that the aspect ratio of the image will be retained,
// so it will not necessarily be a square, even if x and y are set as the same value.
func deriveThumbnail(b []byte, contentType string, x uint, y uint) (*imageAndMeta, error) {
func deriveThumbnail(b []byte, contentType string) (*ImageMeta, error) {
var i image.Image
var err error
@ -239,7 +208,7 @@ func deriveThumbnail(b []byte, contentType string, x uint, y uint) (*imageAndMet
return nil, fmt.Errorf("content type %s not recognised", contentType)
}
thumb := resize.Thumbnail(x, y, i, resize.NearestNeighbor)
thumb := resize.Thumbnail(thumbnailMaxWidth, thumbnailMaxHeight, i, resize.NearestNeighbor)
width := thumb.Bounds().Size().X
height := thumb.Bounds().Size().Y
size := width * height
@ -257,7 +226,7 @@ func deriveThumbnail(b []byte, contentType string, x uint, y uint) (*imageAndMet
}); err != nil {
return nil, err
}
return &imageAndMeta{
return &ImageMeta{
image: out.Bytes(),
width: width,
height: height,
@ -268,7 +237,7 @@ func deriveThumbnail(b []byte, contentType string, x uint, y uint) (*imageAndMet
}
// deriveStaticEmojji takes a given gif or png of an emoji, decodes it, and re-encodes it as a static png.
func deriveStaticEmoji(b []byte, contentType string) (*imageAndMeta, error) {
func deriveStaticEmoji(b []byte, contentType string) (*ImageMeta, error) {
var i image.Image
var err error
@ -291,7 +260,7 @@ func deriveStaticEmoji(b []byte, contentType string) (*imageAndMeta, error) {
if err := png.Encode(out, i); err != nil {
return nil, err
}
return &imageAndMeta{
return &ImageMeta{
image: out.Bytes(),
}, nil
}