implementing rotate

RevidCLI.go

@@ -63,13 +63,14 @@ const (
 	quantizationPtr       = 16
 	timeoutPtr            = 17
 	intraRefreshPeriodPtr = 18
+	rotatePtr							= 19
 )
 
 // Other misc consts
 const (
 	sleepTime = 2 * 43200
 	defaultRunDuration = 2 * 43200
-	noOfConfigconfigFlags = 19
+	noOfConfigconfigFlags = 20
 	revidStopTime = 5
 	prepTime = 20
 	loggerVerbosity = 3
@@ -118,6 +119,7 @@ func main() {
 		{"Quantization", 				"Desired quantization value"},
 		{"Timeout", 						"Http timeout in seconds"},
 		{"IntraRefreshPeriod",	"The IntraRefreshPeriod i.e. how many keyframes we send"},
+		{"Rotate",							"Rotate video the specified number of degrees"},
 	}
 
 	// Create the configFlags based on the flagNames array
@@ -221,6 +223,7 @@ func main() {
 	config.Quantization 			= *configFlags[quantizationPtr]
 	config.Timeout 						= *configFlags[timeoutPtr]
 	config.IntraRefreshPeriod	= *configFlags[intraRefreshPeriodPtr]
+	config.Rotate 						= *configFlags[rotatePtr]
 
 	// Also give the config a logger object
 	config.Logger = smartLogger.New(loggerVerbosity, smartLogger.White)

revid/Config.go

@@ -98,6 +98,7 @@ const (
 	defaultBitrate            = "500000"
 	defaultQuantizationMode   = QuantizationOff
 	defaultFramesPerClip      = "1"
+	defaultRotate							= "0"
 )
 
 // Validate checks for any errors in the config fields and defaults settings
@@ -273,5 +274,14 @@ func (config *Config) Validate(r *revid) error {
 			return errors.New("Bad quantization defined in config!")
 		}
 	}
+
+	if config.Rotate = "" {
+		r.Log(Warning, fmt.Sprintf("No rotate defined defaulting to: %v", defaultRotate) )
+		r.config.Rotate = defaultRotate
+	} else {
+		if integer, err := strconv.Atoi(config.Rotate); integer < 0 || integer > 270 || err != nil {
+			return errors.New("Bad rotate defined in config!")
+		}
+	}
 	return nil
 }

revid/Revid.go

@@ -543,6 +543,7 @@ func (r *revid) setupInputForRaspivid() error {
 				"-fps", r.config.FrameRate,
 				"-ih",
 				"-g", r.config.IntraRefreshPeriod,
+				"-ro", r.config.Rotate,
 			)
 		case QuantizationOff:
 			r.cmd = exec.Command("raspivid",
@@ -556,6 +557,7 @@ func (r *revid) setupInputForRaspivid() error {
 				"-fps", r.config.FrameRate,
 				"-ih",
 				"-g", r.config.IntraRefreshPeriod,
+				"-ro", r.config.Rotate,
 			)
 		}