Moved all to videoio.go for portability

video.go

@@ -1,114 +0,0 @@
-package main
-
-import (
-	"io"
-	"os"
-	"os/exec"
-	"os/signal"
-	"syscall"
-)
-
-type Video struct {
-	filename    string
-	width       int
-	height      int
-	channels    int
-	bitrate     int
-	duration    float64
-	fps         float64
-	codec       string
-	pix_fmt     string
-	framebuffer []byte
-	pipe        *io.ReadCloser
-	cmd         *exec.Cmd
-}
-
-func NewVideo(filename string) *Video {
-	if !Exists(filename) {
-		panic("File: " + filename + " does not exist")
-	}
-	// Execute ffmpeg -i command to get video information.
-	cmd := exec.Command("ffmpeg", "-i", filename, "-")
-	// ffmpeg output piped to Stderr.
-	pipe, err := cmd.StderrPipe()
-	if err != nil {
-		panic(err)
-	}
-	if err := cmd.Start(); err != nil {
-		panic(err)
-	}
-	buffer := make([]byte, 2<<12)
-	total := 0
-	for {
-		n, err := pipe.Read(buffer[total:])
-		total += n
-		if err == io.EOF {
-			break
-		}
-	}
-	cmd.Wait()
-	video := &Video{filename: filename, channels: 3}
-	parseFFMPEGHeader(video, string(buffer))
-	return video
-}
-
-func (video *Video) initVideoStream() {
-	// If user exits with Ctrl+C, stop ffmpeg process.
-	video.cleanup()
-
-	cmd := exec.Command(
-		"ffmpeg",
-		"-loglevel", "quiet",
-		"-i", video.filename,
-		"-f", "image2pipe",
-		"-pix_fmt", "rgb24",
-		"-vcodec", "rawvideo", "-",
-	)
-	video.cmd = cmd
-	pipe, err := cmd.StdoutPipe()
-	if err != nil {
-		panic(err)
-	}
-	video.pipe = &pipe
-	if err := cmd.Start(); err != nil {
-		panic(err)
-	}
-	video.framebuffer = make([]byte, video.width*video.height*video.channels)
-}
-
-func (video *Video) NextFrame() bool {
-	// If cmd is nil, video reading has not been initialized.
-	if video.cmd == nil {
-		video.initVideoStream()
-	}
-	total := 0
-	for total < video.width*video.height*video.channels {
-		n, err := (*video.pipe).Read(video.framebuffer[total:])
-		if err == io.EOF {
-			(*video.pipe).Close()
-			if err := video.cmd.Wait(); err != nil {
-				panic(err)
-			}
-			return false
-		}
-		total += n
-	}
-	return true
-}
-
-// Stops the "cmd" process running when the user presses Ctrl+C.
-// https://stackoverflow.com/questions/11268943/is-it-possible-to-capture-a-ctrlc-signal-and-run-a-cleanup-function-in-a-defe
-func (video *Video) cleanup() {
-	c := make(chan os.Signal)
-	signal.Notify(c, os.Interrupt, syscall.SIGTERM)
-	go func() {
-		<-c
-		if video.pipe != nil {
-			(*video.pipe).Close()
-		}
-		if video.cmd != nil {
-			video.cmd.Process.Kill()
-		}
-		os.Exit(1)
-	}()
-}