func TestDecodeAndEncodeSubsampledImages(t *testing.T) {
for _, file := range subsampledImageFiles {
r := util.OpenFile(file)
fmt.Printf(" - test: %s\n", file)
img, err := jpeg.Decode(r, &jpeg.DecoderOptions{})
if err != nil {
t.Errorf("Decode returns error: %v", err)
}
// Create output file
f, err := os.Create(util.GetOutFilePath(fmt.Sprintf("TestDecodeAndEncodeSubsampledImages_%s", file)))
if err != nil {
panic(err)
}
w := bufio.NewWriter(f)
defer func() {
w.Flush()
f.Close()
}()
if err := jpeg.Encode(w, img, &jpeg.EncoderOptions{Quality: 90}); err != nil {
t.Errorf("Encode returns error: %v", err)
}
}
}
func TestDecode(t *testing.T) {
for _, file := range naturalImageFiles {
io := util.OpenFile(file)
fmt.Printf(" - test: %s\n", file)
img, err := jpeg.Decode(io, &jpeg.DecoderOptions{})
if err != nil {
t.Errorf("Got Error: %v", err)
}
util.WritePNG(img, fmt.Sprintf("TestDecode_%s.png", file))
}
}
func BenchmarkDecodeWithNativeJPEG(b *testing.B) {
for i := 0; i < b.N; i++ {
for _, file := range naturalImageFiles {
io := util.OpenFile(file)
img, err := nativeJPEG.Decode(io)
if img == nil {
b.Error("Got nil")
}
if err != nil {
b.Errorf("Got Error: %v", err)
}
}
}
}
func BenchmarkDecodeIntoRGB(b *testing.B) {
for i := 0; i < b.N; i++ {
for _, file := range naturalImageFiles {
io := util.OpenFile(file)
img, err := jpeg.DecodeIntoRGB(io, &jpeg.DecoderOptions{})
if img == nil {
b.Error("Got nil")
}
if err != nil {
b.Errorf("Got Error: %v", err)
}
}
}
}
func TestDecodeIntoRGBA(t *testing.T) {
if jpeg.SupportRGBA() != true {
t.Skipf("This build is not support DecodeIntoRGBA.")
return
}
for _, file := range naturalImageFiles {
io := util.OpenFile(file)
fmt.Printf(" - test: %s\n", file)
img, err := jpeg.DecodeIntoRGBA(io, &jpeg.DecoderOptions{})
if err != nil {
t.Errorf("Got Error: %v", err)
continue
}
util.WritePNG(img, fmt.Sprintf("TestDecodeIntoRGBA_%s.png", file))
}
}
func TestDecodeScaledIntoRGB(t *testing.T) {
for _, file := range naturalImageFiles {
io := util.OpenFile(file)
fmt.Printf(" - test: %s\n", file)
img, err := jpeg.DecodeIntoRGB(io, &jpeg.DecoderOptions{ScaleTarget: image.Rect(0, 0, 100, 100)})
if err != nil {
t.Errorf("Got Error: %v", err)
}
if got := img.Bounds().Dx(); got != 256 {
t.Errorf("Wrong scaled width: %v, expect: 128 (=1024/8)", got)
}
if got := img.Bounds().Dy(); got != 192 {
t.Errorf("Wrong scaled height: %v, expect: 192 (=768/8)", got)
}
util.WritePNG(img, fmt.Sprintf("TestDecodeIntoRGB_%s.png", file))
}
}
func TestDecodeConfig(t *testing.T) {
for _, file := range naturalImageFiles {
r := util.OpenFile(file)
fmt.Printf(" - test: %s\n", file)
config, err := jpeg.DecodeConfig(r)
if err != nil {
t.Errorf("Got error: %v", err)
}
if got := config.ColorModel; got != color.YCbCrModel {
t.Errorf("got wrong ColorModel: %v, expect: color.YCbCrModel", got)
}
if got := config.Width; got != 1024 {
t.Errorf("got wrong width: %d, expect: 1024", got)
}
if got := config.Height; got != 768 {
t.Errorf("got wrong height: %d, expect: 768", got)
}
}
}
func TestOpenFile(t *testing.T) {
for _, file := range util.SubsampledImages {
util.OpenFile(file)
}
}