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change buffer size to 2 (#482)

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This commit is contained in:
Clyde Bazile
2023-03-29 17:42:58 -04:00
committed by GitHub
parent e4ac96ea6b
commit b9ce5bb861
3 changed files with 9 additions and 3 deletions
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pkg/driver/camera/camera_linux.go
+5 -3
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@@ -61,6 +61,8 @@ var (
}
)
const bufCount = 2
// Camera implementation using v4l2
// Reference: https://linuxtv.org/downloads/v4l-dvb-apis/uapi/v4l/videodev.html#videodev
type camera struct {
@@ -162,7 +164,7 @@ func (c *camera) Open() error {
}
// Buffering should be handled in higher level.
err = cam.SetBufferCount(1)
err = cam.SetBufferCount(bufCount)
if err != nil {
return err
}
@@ -236,8 +238,8 @@ func (c *camera) VideoRecord(p prop.Media) (video.Reader, error) {
return nil, func() {}, io.EOF
}
if p.DiscardFramesOlderThan != 0 {
if time.Now().Sub(c.prevFrameTime) >= p.DiscardFramesOlderThan {
if p.DiscardFramesOlderThan != 0 && time.Now().Sub(c.prevFrameTime) >= p.DiscardFramesOlderThan {
for i := 0; i < bufCount; i++ {
_ = cam.WaitForFrame(readTimeoutSec)
_, _ = cam.ReadFrame()
}