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filter: return length from the filter's Write method

This commit is contained in:
Scott 2020-01-27 11:23:56 +10:30
parent fb43e9214a
commit a111f21427
1 changed files with 6 additions and 3 deletions
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7
filter/difference.go
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@ -76,8 +76,11 @@ func (d *Difference) Write(f []byte) (int, error) {
if d.prev.Empty() {
var err error
d.prev, err = gocv.IMDecode(f, gocv.IMReadColor)
if err != nil {
return 0, err
}
return len(f), nil
}
img, err := gocv.IMDecode(f, gocv.IMReadColor)
defer img.Close()
@ -94,7 +97,7 @@ func (d *Difference) Write(f []byte) (int, error) {
mean := imgDelta.Mean().Val1
// Update History
// Update History.
d.prev = img.Clone()
// Draw debug information.
@ -118,7 +121,7 @@ func (d *Difference) Write(f []byte) (int, error) {
// Don't write to destination if there is no motion.
if mean < d.thresh {
return 0, nil
return len(f), nil
}
// Write to destination.