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Merge pull request #75 from h2non/master

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merge(master)
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Tomás Aparicio 2016-01-30 15:15:27 +00:00
commit aca57af419
5 changed files with 77 additions and 15 deletions
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17
README.md
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@ -1,4 +1,4 @@
# bimg [![Build Status](https://travis-ci.org/h2non/bimg.png)](https://travis-ci.org/h2non/bimg) [![GitHub release](http://img.shields.io/github/tag/h2non/bimg.svg?style=flat-square)](https://github.com/h2non/bimg/releases) [![GoDoc](https://godoc.org/github.com/h2non/bimg?status.svg)](https://godoc.org/github.com/h2non/bimg)
# bimg [![Build Status](https://travis-ci.org/h2non/bimg.png)](https://travis-ci.org/h2non/bimg) [![GoDoc](https://godoc.org/github.com/h2non/bimg?status.svg)](https://godoc.org/github.com/h2non/bimg) [![Go Report Card](http://goreportcard.com/badge/h2non/bimg)](http://goreportcard.com/report/h2non/bimg)
Small [Go](http://golang.org) package for fast high-level image processing using [libvips](https://github.com/jcupitt/libvips) via C bindings, providing a simple, elegant and fluent [programmatic API](#examples).
@ -297,6 +297,21 @@ Enable libvips traces (note that a lot of data will be written in stdout):
VIPS_TRACE=1 ./app
```
You can also dump a core on failure, as [John Cuppit](https://github.com/jcupitt) said:
```c
g_log_set_always_fatal(
G_LOG_FLAG_RECURSION |
G_LOG_FLAG_FATAL |
G_LOG_LEVEL_ERROR |
G_LOG_LEVEL_CRITICAL |
G_LOG_LEVEL_WARNING );
```
Or set the G_DEBUG environment variable:
```
export G_DEBUG=fatal-warnings,fatal-criticals
```
## API
See [godoc reference](https://godoc.org/github.com/h2non/bimg) for detailed API documentation.

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fixtures/vertical.jpg Normal file
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1
image.go
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@ -1,5 +1,6 @@
package bimg
// Image encapsulates the whole image buffer
type Image struct {
buffer []byte
}

2
metadata.go
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@ -6,11 +6,13 @@ package bimg
*/
import "C"
// ImageSize represents the image width and height values
type ImageSize struct {
Width int
Height int
}
// ImageMedatada represents the basic metadata fields
type ImageMetadata struct {
Orientation int
Channels int

72
resize_test.go
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@ -4,6 +4,7 @@ import (
"io/ioutil"
"os"
"path"
"strconv"
"testing"
)
@ -28,27 +29,70 @@ func TestResize(t *testing.T) {
Write("fixtures/test_out.jpg", newImg)
}
func TestResizeCustomSizes(t *testing.T) {
func TestResizeVerticalImage(t *testing.T) {
tests := []struct {
file string
format ImageType
options Options
}{
{"test.jpg", JPEG, Options{Width: 800, Height: 600}},
{"test.jpg", JPEG, Options{Width: 1000, Height: 1000}},
{"test.jpg", JPEG, Options{Width: 100, Height: 50}},
{"test.jpg", JPEG, Options{Width: 2000, Height: 2000}},
{"test.jpg", JPEG, Options{Width: 500, Height: 1000}},
{"test.jpg", JPEG, Options{Width: 500}},
{"test.jpg", JPEG, Options{Height: 500}},
{"test.jpg", JPEG, Options{Crop: true, Width: 500, Height: 1000}},
{"test.jpg", JPEG, Options{Crop: true, Enlarge: true, Width: 2000, Height: 1400}},
{"test.jpg", JPEG, Options{Enlarge: true, Force: true, Width: 2000, Height: 2000}},
{"test.jpg", JPEG, Options{Force: true, Width: 2000, Height: 2000}},
{JPEG, Options{Width: 800, Height: 600}},
{JPEG, Options{Width: 1000, Height: 1000}},
{JPEG, Options{Width: 1000, Height: 1500}},
{JPEG, Options{Width: 1000}},
{JPEG, Options{Height: 1500}},
{JPEG, Options{Width: 100, Height: 50}},
{JPEG, Options{Width: 2000, Height: 2000}},
{JPEG, Options{Width: 500, Height: 1000}},
{JPEG, Options{Width: 500}},
{JPEG, Options{Height: 500}},
{JPEG, Options{Crop: true, Width: 500, Height: 1000}},
{JPEG, Options{Crop: true, Enlarge: true, Width: 2000, Height: 1400}},
{JPEG, Options{Enlarge: true, Force: true, Width: 2000, Height: 2000}},
{JPEG, Options{Force: true, Width: 2000, Height: 2000}},
}
buf, _ := Read("fixtures/vertical.jpg")
for _, test := range tests {
image, err := Resize(buf, test.options)
if err != nil {
t.Errorf("Resize(imgData, %#v) error: %#v", test.options, err)
}
if DetermineImageType(image) != test.format {
t.Fatal("Image format is invalid. Expected: %s", test.format)
}
size, _ := Size(image)
if test.options.Height > 0 && size.Height != test.options.Height {
t.Fatalf("Invalid height: %d", size.Height)
}
if test.options.Width > 0 && size.Width != test.options.Width {
t.Fatalf("Invalid width: %d", size.Width)
}
Write("fixtures/test_vertical_"+strconv.Itoa(test.options.Width)+"x"+strconv.Itoa(test.options.Height)+".jpg", image)
}
}
func TestResizeCustomSizes(t *testing.T) {
tests := []struct {
format ImageType
options Options
}{
{JPEG, Options{Width: 800, Height: 600}},
{JPEG, Options{Width: 1000, Height: 1000}},
{JPEG, Options{Width: 100, Height: 50}},
{JPEG, Options{Width: 2000, Height: 2000}},
{JPEG, Options{Width: 500, Height: 1000}},
{JPEG, Options{Width: 500}},
{JPEG, Options{Height: 500}},
{JPEG, Options{Crop: true, Width: 500, Height: 1000}},
{JPEG, Options{Crop: true, Enlarge: true, Width: 2000, Height: 1400}},
{JPEG, Options{Enlarge: true, Force: true, Width: 2000, Height: 2000}},
{JPEG, Options{Force: true, Width: 2000, Height: 2000}},
}
buf, _ := Read("fixtures/test.jpg")
for _, test := range tests {
buf, _ := Read("fixtures/" + test.file)
image, err := Resize(buf, test.options)
if err != nil {
t.Errorf("Resize(imgData, %#v) error: %#v", test.options, err)