diff options
Diffstat (limited to 'Godeps/_workspace/src/github.com/nfnt/resize/ycc_test.go')
-rw-r--r-- | Godeps/_workspace/src/github.com/nfnt/resize/ycc_test.go | 214 |
1 files changed, 0 insertions, 214 deletions
diff --git a/Godeps/_workspace/src/github.com/nfnt/resize/ycc_test.go b/Godeps/_workspace/src/github.com/nfnt/resize/ycc_test.go deleted file mode 100644 index 54d53d157..000000000 --- a/Godeps/_workspace/src/github.com/nfnt/resize/ycc_test.go +++ /dev/null @@ -1,214 +0,0 @@ -/* -Copyright (c) 2014, Charlie Vieth <charlie.vieth@gmail.com> - -Permission to use, copy, modify, and/or distribute this software for any purpose -with or without fee is hereby granted, provided that the above copyright notice -and this permission notice appear in all copies. - -THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH -REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND -FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, -INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS -OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER -TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF -THIS SOFTWARE. -*/ - -package resize - -import ( - "image" - "image/color" - "testing" -) - -type Image interface { - image.Image - SubImage(image.Rectangle) image.Image -} - -func TestImage(t *testing.T) { - testImage := []Image{ - newYCC(image.Rect(0, 0, 10, 10), image.YCbCrSubsampleRatio420), - newYCC(image.Rect(0, 0, 10, 10), image.YCbCrSubsampleRatio422), - newYCC(image.Rect(0, 0, 10, 10), image.YCbCrSubsampleRatio440), - newYCC(image.Rect(0, 0, 10, 10), image.YCbCrSubsampleRatio444), - } - for _, m := range testImage { - if !image.Rect(0, 0, 10, 10).Eq(m.Bounds()) { - t.Errorf("%T: want bounds %v, got %v", - m, image.Rect(0, 0, 10, 10), m.Bounds()) - continue - } - m = m.SubImage(image.Rect(3, 2, 9, 8)).(Image) - if !image.Rect(3, 2, 9, 8).Eq(m.Bounds()) { - t.Errorf("%T: sub-image want bounds %v, got %v", - m, image.Rect(3, 2, 9, 8), m.Bounds()) - continue - } - // Test that taking an empty sub-image starting at a corner does not panic. - m.SubImage(image.Rect(0, 0, 0, 0)) - m.SubImage(image.Rect(10, 0, 10, 0)) - m.SubImage(image.Rect(0, 10, 0, 10)) - m.SubImage(image.Rect(10, 10, 10, 10)) - } -} - -func TestConvertYCbCr(t *testing.T) { - testImage := []Image{ - image.NewYCbCr(image.Rect(0, 0, 50, 50), image.YCbCrSubsampleRatio420), - image.NewYCbCr(image.Rect(0, 0, 50, 50), image.YCbCrSubsampleRatio422), - image.NewYCbCr(image.Rect(0, 0, 50, 50), image.YCbCrSubsampleRatio440), - image.NewYCbCr(image.Rect(0, 0, 50, 50), image.YCbCrSubsampleRatio444), - } - - for _, img := range testImage { - m := img.(*image.YCbCr) - for y := m.Rect.Min.Y; y < m.Rect.Max.Y; y++ { - for x := m.Rect.Min.X; x < m.Rect.Max.X; x++ { - yi := m.YOffset(x, y) - ci := m.COffset(x, y) - m.Y[yi] = uint8(16*y + x) - m.Cb[ci] = uint8(y + 16*x) - m.Cr[ci] = uint8(y + 16*x) - } - } - - // test conversion from YCbCr to ycc - yc := imageYCbCrToYCC(m) - for y := m.Rect.Min.Y; y < m.Rect.Max.Y; y++ { - for x := m.Rect.Min.X; x < m.Rect.Max.X; x++ { - ystride := 3 * (m.Rect.Max.X - m.Rect.Min.X) - xstride := 3 - yi := m.YOffset(x, y) - ci := m.COffset(x, y) - si := (y * ystride) + (x * xstride) - if m.Y[yi] != yc.Pix[si] { - t.Errorf("Err Y - found: %d expected: %d x: %d y: %d yi: %d si: %d", - m.Y[yi], yc.Pix[si], x, y, yi, si) - } - if m.Cb[ci] != yc.Pix[si+1] { - t.Errorf("Err Cb - found: %d expected: %d x: %d y: %d ci: %d si: %d", - m.Cb[ci], yc.Pix[si+1], x, y, ci, si+1) - } - if m.Cr[ci] != yc.Pix[si+2] { - t.Errorf("Err Cr - found: %d expected: %d x: %d y: %d ci: %d si: %d", - m.Cr[ci], yc.Pix[si+2], x, y, ci, si+2) - } - } - } - - // test conversion from ycc back to YCbCr - ym := yc.YCbCr() - for y := m.Rect.Min.Y; y < m.Rect.Max.Y; y++ { - for x := m.Rect.Min.X; x < m.Rect.Max.X; x++ { - yi := m.YOffset(x, y) - ci := m.COffset(x, y) - if m.Y[yi] != ym.Y[yi] { - t.Errorf("Err Y - found: %d expected: %d x: %d y: %d yi: %d", - m.Y[yi], ym.Y[yi], x, y, yi) - } - if m.Cb[ci] != ym.Cb[ci] { - t.Errorf("Err Cb - found: %d expected: %d x: %d y: %d ci: %d", - m.Cb[ci], ym.Cb[ci], x, y, ci) - } - if m.Cr[ci] != ym.Cr[ci] { - t.Errorf("Err Cr - found: %d expected: %d x: %d y: %d ci: %d", - m.Cr[ci], ym.Cr[ci], x, y, ci) - } - } - } - } -} - -func TestYCbCr(t *testing.T) { - rects := []image.Rectangle{ - image.Rect(0, 0, 16, 16), - image.Rect(1, 0, 16, 16), - image.Rect(0, 1, 16, 16), - image.Rect(1, 1, 16, 16), - image.Rect(1, 1, 15, 16), - image.Rect(1, 1, 16, 15), - image.Rect(1, 1, 15, 15), - image.Rect(2, 3, 14, 15), - image.Rect(7, 0, 7, 16), - image.Rect(0, 8, 16, 8), - image.Rect(0, 0, 10, 11), - image.Rect(5, 6, 16, 16), - image.Rect(7, 7, 8, 8), - image.Rect(7, 8, 8, 9), - image.Rect(8, 7, 9, 8), - image.Rect(8, 8, 9, 9), - image.Rect(7, 7, 17, 17), - image.Rect(8, 8, 17, 17), - image.Rect(9, 9, 17, 17), - image.Rect(10, 10, 17, 17), - } - subsampleRatios := []image.YCbCrSubsampleRatio{ - image.YCbCrSubsampleRatio444, - image.YCbCrSubsampleRatio422, - image.YCbCrSubsampleRatio420, - image.YCbCrSubsampleRatio440, - } - deltas := []image.Point{ - image.Pt(0, 0), - image.Pt(1000, 1001), - image.Pt(5001, -400), - image.Pt(-701, -801), - } - for _, r := range rects { - for _, subsampleRatio := range subsampleRatios { - for _, delta := range deltas { - testYCbCr(t, r, subsampleRatio, delta) - } - } - if testing.Short() { - break - } - } -} - -func testYCbCr(t *testing.T, r image.Rectangle, subsampleRatio image.YCbCrSubsampleRatio, delta image.Point) { - // Create a YCbCr image m, whose bounds are r translated by (delta.X, delta.Y). - r1 := r.Add(delta) - img := image.NewYCbCr(r1, subsampleRatio) - - // Initialize img's pixels. For 422 and 420 subsampling, some of the Cb and Cr elements - // will be set multiple times. That's OK. We just want to avoid a uniform image. - for y := r1.Min.Y; y < r1.Max.Y; y++ { - for x := r1.Min.X; x < r1.Max.X; x++ { - yi := img.YOffset(x, y) - ci := img.COffset(x, y) - img.Y[yi] = uint8(16*y + x) - img.Cb[ci] = uint8(y + 16*x) - img.Cr[ci] = uint8(y + 16*x) - } - } - - m := imageYCbCrToYCC(img) - - // Make various sub-images of m. - for y0 := delta.Y + 3; y0 < delta.Y+7; y0++ { - for y1 := delta.Y + 8; y1 < delta.Y+13; y1++ { - for x0 := delta.X + 3; x0 < delta.X+7; x0++ { - for x1 := delta.X + 8; x1 < delta.X+13; x1++ { - subRect := image.Rect(x0, y0, x1, y1) - sub := m.SubImage(subRect).(*ycc) - - // For each point in the sub-image's bounds, check that m.At(x, y) equals sub.At(x, y). - for y := sub.Rect.Min.Y; y < sub.Rect.Max.Y; y++ { - for x := sub.Rect.Min.X; x < sub.Rect.Max.X; x++ { - color0 := m.At(x, y).(color.YCbCr) - color1 := sub.At(x, y).(color.YCbCr) - if color0 != color1 { - t.Errorf("r=%v, subsampleRatio=%v, delta=%v, x=%d, y=%d, color0=%v, color1=%v", - r, subsampleRatio, delta, x, y, color0, color1) - return - } - } - } - } - } - } - } -} |