Merged in raspivid-options (pull request #173)

revid: expose raspivid brightness, saturation, exposure and awb to revid-cli

cmd/revid-cli/main.go

@@ -129,6 +129,10 @@ func handleFlags() revid.Config {
 		quantizationPtr       = flag.Uint("Quantization", 0, "Desired quantization value: 0-40")
 		intraRefreshPeriodPtr = flag.Uint("IntraRefreshPeriod", 0, "The IntraRefreshPeriod i.e. how many keyframes we send")
 		rotationPtr           = flag.Uint("Rotatation", 0, "Rotate video output. (0-359 degrees)")
+		brightnessPtr         = flag.Uint("Brightness", 50, "Set brightness. (0-100) ")
+		saturationPtr         = flag.Int("Saturation", 0, "Set Saturation. (100-100)")
+		exposurePtr           = flag.String("Exposure", "auto", "Set exposure mode. ("+strings.Join(revid.ExposureModes[:], ",")+")")
+		autoWhiteBalancePtr   = flag.String("Awb", "auto", "Set automatic white balance mode. ("+strings.Join(revid.AutoWhiteBalanceModes[:], ",")+")")
 	)
 
 	var outputs flagStrings
@@ -256,6 +260,10 @@ func handleFlags() revid.Config {
 	cfg.IntraRefreshPeriod = *intraRefreshPeriodPtr
 	cfg.RtpAddress = *rtpAddrPtr
 	cfg.SendRetry = *sendRetryPtr
+	cfg.Brightness = *brightnessPtr
+	cfg.Saturation = *saturationPtr
+	cfg.Exposure = *exposurePtr
+	cfg.AutoWhiteBalance = *autoWhiteBalancePtr
 
 	return cfg
 }

revid/config.go

@@ -70,6 +70,40 @@ type Config struct {
 	SendRetry          bool
 	BurstPeriod        uint
 	Rotation           uint
+	Brightness         uint
+	Saturation         int
+	Exposure           string
+	AutoWhiteBalance   string
+}
+
+// Possible modes for raspivid --exposure parameter.
+var ExposureModes = [...]string{
+	"auto",
+	"night",
+	"nightpreview",
+	"backlight",
+	"spotlight",
+	"sports",
+	"snow",
+	"beach",
+	"verylong",
+	"fixedfps",
+	"antishake",
+	"fireworks",
+}
+
+// Possible modes for raspivid --awb parameter.
+var AutoWhiteBalanceModes = [...]string{
+	"off",
+	"auto",
+	"sun",
+	"cloud",
+	"shade",
+	"tungsten",
+	"fluorescent",
+	"incandescent",
+	"flash",
+	"horizon",
 }
 
 // Enums for config struct
@@ -257,5 +291,32 @@ func (c *Config) Validate(r *Revid) error {
 	if c.RtpAddress == "" {
 		c.RtpAddress = defaultRtpAddr
 	}
+
+	if c.Brightness < 0 || c.Brightness > 100 {
+		return errors.New("bad brightness setting in config")
+	}
+
+	if c.Saturation < -100 || c.Saturation > 100 {
+		return errors.New("bad saturation setting in config")
+	}
+
+	if !stringInSlice(c.Exposure, ExposureModes[:]) {
+		return errors.New("bad exposure setting in config")
+	}
+
+	if !stringInSlice(c.AutoWhiteBalance, AutoWhiteBalanceModes[:]) {
+		return errors.New("bad awb setting in config")
+	}
+
 	return nil
 }
+
+// stringInSlice returns true if want is in slice.
+func stringInSlice(want string, slice []string) bool {
+	for _, s := range slice {
+		if s == want {
+			return true
+		}
+	}
+	return false
+}

revid/revid.go

@@ -358,6 +358,22 @@ func (r *Revid) Update(vars map[string]string) error {
 	//look through the vars and update revid where needed
 	for key, value := range vars {
 		switch key {
+		case "Saturation":
+			s, err := strconv.ParseInt(value, 10, 0)
+			if err != nil {
+				r.config.Logger.Log(logger.Warning, pkg+"invalid saturation param", "value", value)
+			}
+			r.config.Saturation = int(s)
+		case "Brightness":
+			b, err := strconv.ParseUint(value, 10, 0)
+			if err != nil {
+				r.config.Logger.Log(logger.Warning, pkg+"invalid brightness param", "value", value)
+			}
+			r.config.Brightness = uint(b)
+		case "Exposure":
+			r.config.Exposure = value
+		case "AutoWhiteBalance":
+			r.config.AutoWhiteBalance = value
 		case "Output":
 			outputs := strings.Split(value, ",")
 			r.config.Outputs = make([]uint8, len(outputs))
@@ -594,6 +610,14 @@ func (r *Revid) startRaspivid() error {
 		"--bitrate", fmt.Sprint(r.config.Bitrate),
 		"--framerate", fmt.Sprint(r.config.FrameRate),
 		"--rotation", fmt.Sprint(r.config.Rotation),
+		"--brightness", fmt.Sprint(r.config.Brightness),
+		"--saturation", fmt.Sprint(r.config.Saturation),
+		"--exposure", fmt.Sprint(r.config.Exposure),
+		"--awb", fmt.Sprint(r.config.AutoWhiteBalance),
+	}
+
+	if r.config.FlipHorizontal {
+		args = append(args, "--hflip")
 	}
 
 	if r.config.FlipVertical {