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undefined/exif_8828_oecf.go: Add Encode()

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This commit is contained in:
Dustin Oprea 2020-01-05 16:53:55 -05:00
parent f7701a222a
commit d293fcac9c
1 changed files with 44 additions and 0 deletions
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44
v2/undefined/exif_8828_oecf.go
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@ -1,8 +1,11 @@
package exifundefined
import (
"bytes"
"fmt"
"encoding/binary"
"github.com/dsoprea/go-logging"
"github.com/dsoprea/go-exif/v2/common"
@ -26,6 +29,47 @@ func (oecf Tag8828Oecf) EncoderName() string {
type Codec8828Oecf struct {
}
func (Codec8828Oecf) Encode(value interface{}, byteOrder binary.ByteOrder) (encoded []byte, unitCount uint32, err error) {
defer func() {
if state := recover(); state != nil {
err = log.Wrap(state.(error))
}
}()
// TODO(dustin): Add test
oecf, ok := value.(Tag8828Oecf)
if ok == false {
log.Panicf("can only encode a Tag8828Oecf")
}
b := new(bytes.Buffer)
err = binary.Write(b, byteOrder, oecf.Columns)
log.PanicIf(err)
err = binary.Write(b, byteOrder, oecf.Rows)
log.PanicIf(err)
for _, name := range oecf.ColumnNames {
_, err := b.Write([]byte(name))
log.PanicIf(err)
_, err = b.Write([]byte{0})
log.PanicIf(err)
}
ve := exifcommon.NewValueEncoder(byteOrder)
ed, err := ve.Encode(oecf.Values)
log.PanicIf(err)
_, err = b.Write(ed.Encoded)
log.PanicIf(err)
return b.Bytes(), uint32(b.Len()), nil
}
func (Codec8828Oecf) Decode(valueContext *exifcommon.ValueContext) (value EncodeableValue, err error) {
defer func() {
if state := recover(); state != nil {