diff options
Diffstat (limited to 'vendor/github.com/dsoprea/go-jpeg-image-structure/v2/media_parser.go')
| -rw-r--r-- | vendor/github.com/dsoprea/go-jpeg-image-structure/v2/media_parser.go | 139 | 
1 files changed, 0 insertions, 139 deletions
diff --git a/vendor/github.com/dsoprea/go-jpeg-image-structure/v2/media_parser.go b/vendor/github.com/dsoprea/go-jpeg-image-structure/v2/media_parser.go deleted file mode 100644 index e6fc60bc4..000000000 --- a/vendor/github.com/dsoprea/go-jpeg-image-structure/v2/media_parser.go +++ /dev/null @@ -1,139 +0,0 @@ -package jpegstructure - -import ( -	"bufio" -	"bytes" -	"image" -	"io" -	"os" - -	"image/jpeg" - -	"github.com/dsoprea/go-logging" -	"github.com/dsoprea/go-utility/v2/image" -) - -// JpegMediaParser is a `riimage.MediaParser` that knows how to parse JPEG -// images. -type JpegMediaParser struct { -} - -// NewJpegMediaParser returns a new JpegMediaParser. -func NewJpegMediaParser() *JpegMediaParser { - -	// TODO(dustin): Add test - -	return new(JpegMediaParser) -} - -// Parse parses a JPEG uses an `io.ReadSeeker`. Even if it fails, it will return -// the list of segments encountered prior to the failure. -func (jmp *JpegMediaParser) Parse(rs io.ReadSeeker, size int) (ec riimage.MediaContext, err error) { -	defer func() { -		if state := recover(); state != nil { -			err = log.Wrap(state.(error)) -		} -	}() - -	s := bufio.NewScanner(rs) - -	// Since each segment can be any size, our buffer must allowed to grow as -	// large as the file. -	buffer := []byte{} -	s.Buffer(buffer, size) - -	js := NewJpegSplitter(nil) -	s.Split(js.Split) - -	for s.Scan() != false { -	} - -	// Always return the segments that were parsed, at least until there was an -	// error. -	ec = js.Segments() - -	log.PanicIf(s.Err()) - -	return ec, nil -} - -// ParseFile parses a JPEG file. Even if it fails, it will return the list of -// segments encountered prior to the failure. -func (jmp *JpegMediaParser) ParseFile(filepath string) (ec riimage.MediaContext, err error) { -	defer func() { -		if state := recover(); state != nil { -			err = log.Wrap(state.(error)) -		} -	}() - -	// TODO(dustin): Add test - -	f, err := os.Open(filepath) -	log.PanicIf(err) - -	defer f.Close() - -	stat, err := f.Stat() -	log.PanicIf(err) - -	size := stat.Size() - -	sl, err := jmp.Parse(f, int(size)) - -	// Always return the segments that were parsed, at least until there was an -	// error. -	ec = sl - -	log.PanicIf(err) - -	return ec, nil -} - -// ParseBytes parses a JPEG byte-slice. Even if it fails, it will return the -// list of segments encountered prior to the failure. -func (jmp *JpegMediaParser) ParseBytes(data []byte) (ec riimage.MediaContext, err error) { -	defer func() { -		if state := recover(); state != nil { -			err = log.Wrap(state.(error)) -		} -	}() - -	br := bytes.NewReader(data) - -	sl, err := jmp.Parse(br, len(data)) - -	// Always return the segments that were parsed, at least until there was an -	// error. -	ec = sl - -	log.PanicIf(err) - -	return ec, nil -} - -// LooksLikeFormat indicates whether the data looks like a JPEG image. -func (jmp *JpegMediaParser) LooksLikeFormat(data []byte) bool { -	if len(data) < 4 { -		return false -	} - -	l := len(data) -	if data[0] != 0xff || data[1] != MARKER_SOI || data[l-2] != 0xff || data[l-1] != MARKER_EOI { -		return false -	} - -	return true -} - -// GetImage returns an image.Image-compatible struct. -func (jmp *JpegMediaParser) GetImage(r io.Reader) (img image.Image, err error) { -	img, err = jpeg.Decode(r) -	log.PanicIf(err) - -	return img, nil -} - -var ( -	// Enforce interface conformance. -	_ riimage.MediaParser = new(JpegMediaParser) -)  | 
