diff options
Diffstat (limited to 'libgo/go/image/bmp/reader.go')
| -rw-r--r-- | libgo/go/image/bmp/reader.go | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/libgo/go/image/bmp/reader.go b/libgo/go/image/bmp/reader.go index 134de5be991..ad568654992 100644 --- a/libgo/go/image/bmp/reader.go +++ b/libgo/go/image/bmp/reader.go @@ -8,15 +8,15 @@ package bmp import ( + "errors" "image/color" "image" "io" - "os" ) // ErrUnsupported means that the input BMP image uses a valid but unsupported // feature. -var ErrUnsupported = os.NewError("bmp: unsupported BMP image") +var ErrUnsupported = errors.New("bmp: unsupported BMP image") func readUint16(b []byte) uint16 { return uint16(b[0]) | uint16(b[1])<<8 @@ -27,7 +27,7 @@ func readUint32(b []byte) uint32 { } // decodePaletted reads an 8 bit-per-pixel BMP image from r. -func decodePaletted(r io.Reader, c image.Config) (image.Image, os.Error) { +func decodePaletted(r io.Reader, c image.Config) (image.Image, error) { var tmp [4]byte paletted := image.NewPaletted(image.Rect(0, 0, c.Width, c.Height), c.ColorModel.(color.Palette)) // BMP images are stored bottom-up rather than top-down. @@ -49,7 +49,7 @@ func decodePaletted(r io.Reader, c image.Config) (image.Image, os.Error) { } // decodeRGBA reads a 24 bit-per-pixel BMP image from r. -func decodeRGBA(r io.Reader, c image.Config) (image.Image, os.Error) { +func decodeRGBA(r io.Reader, c image.Config) (image.Image, error) { rgba := image.NewRGBA(image.Rect(0, 0, c.Width, c.Height)) // There are 3 bytes per pixel, and each row is 4-byte aligned. b := make([]byte, (3*c.Width+3)&^3) @@ -73,7 +73,7 @@ func decodeRGBA(r io.Reader, c image.Config) (image.Image, os.Error) { // Decode reads a BMP image from r and returns it as an image.Image. // Limitation: The file must be 8 or 24 bits per pixel. -func Decode(r io.Reader) (image.Image, os.Error) { +func Decode(r io.Reader) (image.Image, error) { c, err := DecodeConfig(r) if err != nil { return nil, err @@ -87,7 +87,7 @@ func Decode(r io.Reader) (image.Image, os.Error) { // DecodeConfig returns the color model and dimensions of a BMP image without // decoding the entire image. // Limitation: The file must be 8 or 24 bits per pixel. -func DecodeConfig(r io.Reader) (config image.Config, err os.Error) { +func DecodeConfig(r io.Reader) (config image.Config, err error) { // We only support those BMP images that are a BITMAPFILEHEADER // immediately followed by a BITMAPINFOHEADER. const ( @@ -99,7 +99,7 @@ func DecodeConfig(r io.Reader) (config image.Config, err os.Error) { return } if string(b[:2]) != "BM" { - err = os.NewError("bmp: invalid format") + err = errors.New("bmp: invalid format") return } offset := readUint32(b[10:14]) |