minor updates

internal/project/mask.go

@@ -52,6 +52,18 @@ var black = image.NewUniform(color.Gray{})
 
 type Masks []Mask
 
+func (m Masks) Uniq() Masks {
+	var o Masks
+	data := make(map[Mask]bool)
+	for _, mm := range m {
+		data[mm] = true
+	}
+	for mm, _ := range data {
+		o = append(o, mm)
+	}
+	return o
+}
+
 func (m Masks) Apply(i image.Image) {
 	var ii draw.Image
 	var ok bool

internal/project/project.go

@@ -1,7 +1,7 @@
 package project
 
-// #cgo LDFLAGS="-L/usr/local/Cellar/ffmpeg/3.3/lib"
-// #cgo CGO_CFLAGS="-I/usr/local/Cellar/ffmpeg/3.3/include"
+// #cgo LDFLAGS="-L/usr/local/Cellar/ffmpeg/4.2.2_2/lib"
+// #cgo CGO_CFLAGS="-I/usr/local/Cellar/ffmpeg/4.2.2_2/include"
 
 import (
 	"encoding/json"
@@ -180,6 +180,7 @@ func (p *Project) Load(req *http.Request) error {
 			break
 		}
 	}
+	p.Masks = p.Masks.Uniq()
 	return nil
 }
 
@@ -353,6 +354,29 @@ func (p *Project) Run() (Response, error) {
 	if err = iterator.Error(); err != nil {
 		return results, err
 	}
+	if p.Step >= 5 && bgavg == nil {
+		if len(bg.Images) > 0 {
+			log.Printf("calculating background from %d frames", len(bg.Images))
+			bgavg = bg.Image()
+			analyzer.Background = bgavg
+			results.BackgroundImg = dataImg(bgavg, "")
+
+			if p.Step == 6 {
+				log.Printf("extracting vehicle position from %d pending frames", len(pendingAnalysis))
+				for _, pf := range pendingAnalysis {
+					if pf.Frame%50 == 0 && pf.Frame > 0 {
+						log.Printf("... frame %d", pf.Frame)
+					}
+					positions := analyzer.Positions(pf.Image)
+					if len(positions) > 0 {
+						framePositions = append(framePositions, FramePosition{pf.Frame, pf.Time, positions})
+					}
+				}
+				pendingAnalysis = nil
+			}
+		}
+
+	}
 
 	if p.Step == 6 {
 		results.VehiclePositions = TrackVehicles(framePositions)

internal/project/video_iterator.go

@@ -57,7 +57,7 @@ func NewIterator(filename string) (iter *Iterator, err error) {
 		// astream := stream.(av.AudioCodecData)
 		// fmt.Println(astream.Type(), astream.SampleRate(), astream.SampleFormat(), astream.ChannelLayout())
 		// } else if stream.Type().IsVideo() {
-		fmt.Printf("stream[%d] = %s\n", i, stream.Type())
+		fmt.Printf("stream[%d] = %s (video:%v)\n", i, stream.Type(), stream.Type().IsVideo())
 		if stream.Type().IsVideo() {
 			vstream := stream.(av.VideoCodecData)
 			r := image.Rect(0, 0, vstream.Width(), vstream.Height())
@@ -138,6 +138,10 @@ func (i *Iterator) DecodeFrame() error {
 	// decode
 	decoder := i.decoders[i.packet.Idx]
 	var err error
+	if len(i.packet.Data) == 0 {
+		log.Printf("no packet at frame %d", i.frame)
+		return nil
+	}
 	i.vf, err = decoder.Decode(i.packet.Data)
 	if i.vf == nil {
 		log.Printf("no image at frame %d", i.frame)
@@ -148,6 +152,11 @@ func (i *Iterator) DecodeFrame() error {
 }
 
 func (i *Iterator) Image() *image.YCbCr {
+	if i.frame == -1 {
+		if !i.NextWithImage() {
+			panic("no image")
+		}
+	}
 	i.err = i.DecodeFrame()
 	if i.vf == nil {
 		return nil

speed_camera/main.go

@@ -8,8 +8,8 @@ import (
 	"github.com/jehiah/TrafficSpeed/speed_camera/cmd"
 )
 
-// #cgo LDFLAGS="-L/usr/local/Cellar/ffmpeg/3.3/lib"
-// #cgo CGO_CFLAGS="-I/usr/local/Cellar/ffmpeg/3.3/include"
+// #cgo LDFLAGS="-L/usr/local/Cellar/ffmpeg/4.2.2_2/lib"
+// #cgo CGO_CFLAGS="-I/usr/local/Cellar/ffmpeg/4.2.2_2/include"
 
 func main() {
 	log.SetFlags(log.Ldate | log.Ltime | log.Lmicroseconds | log.Llongfile)

src/README.md

@@ -1,34 +1,7 @@
-# vision zero speed camera
-
-## create a project
-
-a) new project /path/to/video
-b) make a working directory for this project ymdhms_name
-c) pick all the settings (web UI)
-d) extract positions
-e) render video
-
-## Video Formating
-
-If the image file is not detected peroperly:
-
-If it's already h264
-
-```bash
-ffmpeg -i in.MOV -an -c copy out.m4a
-```
-
-Or to convert to h264
-
-```bash
-ffmpeg -i in.avi -an -c:v libx264 data/out.m4a
-
-```
-
-----
 
 
-CGO_LDFLAGS="-L/usr/local/Cellar/ffmpeg/3.3/lib" CGO_CFLAGS="-I/usr/local/Cellar/ffmpeg/3.3/include" gb build
+
+CGO_LDFLAGS="-L/usr/local/Cellar/ffmpeg/4.2.2_2/lib" CGO_CFLAGS="-I/usr/local/Cellar/ffmpeg/4.2.2_2/include" gb build
 
 
 # Image libraries