c348254d65
This lets programs that underscore import this package build on Go 1.5. Change-Id: Icd977b16eb44389f8ee4640c2ab57e4b6791b1f4 Reviewed-on: https://go-review.googlesource.com/24954 Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
31 lines
1.3 KiB
Go
31 lines
1.3 KiB
Go
// Copyright 2016 The Go Authors. 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 webp implements a decoder for WEBP images.
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//
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// WEBP is defined at:
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// https://developers.google.com/speed/webp/docs/riff_container
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//
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// It requires Go 1.6 or later.
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package webp // import "golang.org/x/image/webp"
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// This blank Go file, other than the package clause, exists so that this
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// package can be built for Go 1.5 and earlier. (The other files in this
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// package are all marked "+build go1.6" for the NYCbCrA types introduced in Go
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// 1.6). There is no functionality in a blank package, but some image
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// manipulation programs might still underscore import this package for the
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// side effect of registering the WEBP format with the standard library's
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// image.RegisterFormat and image.Decode functions. For example, that program
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// might contain:
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//
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// // Underscore imports to register some formats for image.Decode.
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// import _ "image/gif"
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// import _ "image/jpeg"
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// import _ "image/png"
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// import _ "golang.org/x/image/webp"
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//
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// Such a program will still compile for Go 1.5 (due to this placeholder Go
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// file). It will simply not be able to recognize and decode WEBP (but still
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// handle GIF, JPEG and PNG).
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