mirror of
https://github.com/mickael-kerjean/filestash.git
synced 2025-10-31 18:16:00 +08:00
57 lines
1.1 KiB
Go
57 lines
1.1 KiB
Go
package lib
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// #cgo pkg-config: vips
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// #include <resizer.h>
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// #include <stdlib.h>
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import "C"
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import (
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"bytes"
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. "github.com/mickael-kerjean/filestash/server/common"
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"io"
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"runtime"
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"unsafe"
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)
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var LIBVIPS_INSTALLED = false
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type Transform struct {
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Temporary string
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Size int
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Crop bool
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Quality int
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Exif bool
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}
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func init() {
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if C.resizer_init(C.int(runtime.NumCPU()), 50, 1024) != 0 {
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Log.Warning("Can't load libvips")
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return
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}
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LIBVIPS_INSTALLED = true
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}
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func CreateThumbnail(t *Transform) (io.Reader, error) {
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if LIBVIPS_INSTALLED == false {
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return nil, NewError("Libvips not installed", 501)
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}
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filename := C.CString(t.Temporary)
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defer C.free(unsafe.Pointer(filename))
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var buffer unsafe.Pointer
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len := C.size_t(0)
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if C.resizer_process(filename, &buffer, &len, C.int(t.Size), boolToCInt(t.Crop), C.int(t.Quality), boolToCInt(t.Exif)) != 0 {
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return nil, NewError("", 500)
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}
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buf := C.GoBytes(buffer, C.int(len))
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C.g_free(C.gpointer(buffer))
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return bytes.NewReader(buf), nil
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}
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func boolToCInt(val bool) C.int {
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if val == false {
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return C.int(0)
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}
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return C.int(1)
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}
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