diff options
Diffstat (limited to 'vendor/golang.org/x/image/bmp')
-rw-r--r-- | vendor/golang.org/x/image/bmp/reader.go | 2 | ||||
-rw-r--r-- | vendor/golang.org/x/image/bmp/reader_test.go | 75 | ||||
-rw-r--r-- | vendor/golang.org/x/image/bmp/writer_test.go | 91 |
3 files changed, 167 insertions, 1 deletions
diff --git a/vendor/golang.org/x/image/bmp/reader.go b/vendor/golang.org/x/image/bmp/reader.go index a48cba84d..a0f2715cd 100644 --- a/vendor/golang.org/x/image/bmp/reader.go +++ b/vendor/golang.org/x/image/bmp/reader.go @@ -5,7 +5,7 @@ // Package bmp implements a BMP image decoder and encoder. // // The BMP specification is at http://www.digicamsoft.com/bmp/bmp.html. -package bmp +package bmp // import "golang.org/x/image/bmp" import ( "errors" diff --git a/vendor/golang.org/x/image/bmp/reader_test.go b/vendor/golang.org/x/image/bmp/reader_test.go new file mode 100644 index 000000000..fd6ff64f6 --- /dev/null +++ b/vendor/golang.org/x/image/bmp/reader_test.go @@ -0,0 +1,75 @@ +// Copyright 2012 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package bmp + +import ( + "fmt" + "image" + "os" + "testing" + + _ "image/png" +) + +const testdataDir = "../testdata/" + +func compare(t *testing.T, img0, img1 image.Image) error { + b := img1.Bounds() + if !b.Eq(img0.Bounds()) { + return fmt.Errorf("wrong image size: want %s, got %s", img0.Bounds(), b) + } + for y := b.Min.Y; y < b.Max.Y; y++ { + for x := b.Min.X; x < b.Max.X; x++ { + c0 := img0.At(x, y) + c1 := img1.At(x, y) + r0, g0, b0, a0 := c0.RGBA() + r1, g1, b1, a1 := c1.RGBA() + if r0 != r1 || g0 != g1 || b0 != b1 || a0 != a1 { + return fmt.Errorf("pixel at (%d, %d) has wrong color: want %v, got %v", x, y, c0, c1) + } + } + } + return nil +} + +// TestDecode tests that decoding a PNG image and a BMP image result in the +// same pixel data. +func TestDecode(t *testing.T) { + testCases := []string{ + "video-001", + "yellow_rose-small", + } + + for _, tc := range testCases { + f0, err := os.Open(testdataDir + tc + ".png") + if err != nil { + t.Errorf("%s: Open PNG: %v", tc, err) + continue + } + defer f0.Close() + img0, _, err := image.Decode(f0) + if err != nil { + t.Errorf("%s: Decode PNG: %v", tc, err) + continue + } + + f1, err := os.Open(testdataDir + tc + ".bmp") + if err != nil { + t.Errorf("%s: Open BMP: %v", tc, err) + continue + } + defer f1.Close() + img1, _, err := image.Decode(f1) + if err != nil { + t.Errorf("%s: Decode BMP: %v", tc, err) + continue + } + + if err := compare(t, img0, img1); err != nil { + t.Errorf("%s: %v", tc, err) + continue + } + } +} diff --git a/vendor/golang.org/x/image/bmp/writer_test.go b/vendor/golang.org/x/image/bmp/writer_test.go new file mode 100644 index 000000000..9e5a32741 --- /dev/null +++ b/vendor/golang.org/x/image/bmp/writer_test.go @@ -0,0 +1,91 @@ +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package bmp + +import ( + "bytes" + "fmt" + "image" + "io/ioutil" + "os" + "testing" + "time" +) + +func openImage(filename string) (image.Image, error) { + f, err := os.Open(testdataDir + filename) + if err != nil { + return nil, err + } + defer f.Close() + return Decode(f) +} + +func TestEncode(t *testing.T) { + img0, err := openImage("video-001.bmp") + if err != nil { + t.Fatal(err) + } + + buf := new(bytes.Buffer) + err = Encode(buf, img0) + if err != nil { + t.Fatal(err) + } + + img1, err := Decode(buf) + if err != nil { + t.Fatal(err) + } + + compare(t, img0, img1) +} + +// TestZeroWidthVeryLargeHeight tests that encoding and decoding a degenerate +// image with zero width but over one billion pixels in height is faster than +// naively calling an io.Reader or io.Writer method once per row. +func TestZeroWidthVeryLargeHeight(t *testing.T) { + c := make(chan error, 1) + go func() { + b := image.Rect(0, 0, 0, 0x3fffffff) + var buf bytes.Buffer + if err := Encode(&buf, image.NewRGBA(b)); err != nil { + c <- err + return + } + m, err := Decode(&buf) + if err != nil { + c <- err + return + } + if got := m.Bounds(); got != b { + c <- fmt.Errorf("bounds: got %v, want %v", got, b) + return + } + c <- nil + }() + select { + case err := <-c: + if err != nil { + t.Fatal(err) + } + case <-time.After(3 * time.Second): + t.Fatalf("timed out") + } +} + +// BenchmarkEncode benchmarks the encoding of an image. +func BenchmarkEncode(b *testing.B) { + img, err := openImage("video-001.bmp") + if err != nil { + b.Fatal(err) + } + s := img.Bounds().Size() + b.SetBytes(int64(s.X * s.Y * 4)) + b.ResetTimer() + for i := 0; i < b.N; i++ { + Encode(ioutil.Discard, img) + } +} |