Jay Brown
43 lines
928 B
Go
43 lines
928 B
Go
// Copyright 2015 <chaishushan{AT}gmail.com>. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package tiff
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import (
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"fmt"
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"image"
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)
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func newImageWithIFD(r image.Rectangle, ifd *IFD) (m image.Image, err error) {
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switch ifd.ImageType() {
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case ImageType_Bilevel, ImageType_BilevelInvert:
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m = image.NewGray(r)
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case ImageType_Gray, ImageType_GrayInvert:
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if ifd.Depth() == 16 {
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m = image.NewGray16(r)
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} else {
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m = image.NewGray(r)
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}
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case ImageType_Paletted:
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m = image.NewPaletted(r, ifd.ColorMap())
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case ImageType_NRGBA:
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if ifd.Depth() == 16 {
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m = image.NewNRGBA64(r)
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} else {
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m = image.NewNRGBA(r)
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}
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case ImageType_RGB, ImageType_RGBA:
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if ifd.Depth() == 16 {
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m = image.NewRGBA64(r)
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} else {
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m = image.NewRGBA(r)
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}
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}
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if m == nil {
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err = fmt.Errorf("tiff: Decode, unknown format")
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return
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}
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return
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}
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