mirror of https://bitbucket.org/ausocean/av.git
revid: removed mutex locking and put unexported pipeline specific code in pipeline.go
This commit is contained in:
Saxon Nelson-Milton
parent
27f5f6ca83
commit
d7de7b2b5b
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@ -0,0 +1,366 @@
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/*
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DESCRIPTION
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pipeline.go provides functionality for set up of the revid processing pipeline.
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AUTHORS
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Saxon A. Nelson-Milton <saxon@ausocean.org>
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Alan Noble <alan@ausocean.org>
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Dan Kortschak <dan@ausocean.org>
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Trek Hopton <trek@ausocean.org>
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Scott Barnard <scott@ausocean.org>
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LICENSE
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Copyright (C) 2017-2020 the Australian Ocean Lab (AusOcean)
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It is free software: you can redistribute it and/or modify them
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under the terms of the GNU General Public License as published by the
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Free Software Foundation, either version 3 of the License, or (at your
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option) any later version.
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It is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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in gpl.txt. If not, see http://www.gnu.org/licenses.
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*/
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package revid
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import (
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"errors"
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"fmt"
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"io"
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"time"
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"bitbucket.org/ausocean/av/codec/codecutil"
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"bitbucket.org/ausocean/av/codec/h264"
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"bitbucket.org/ausocean/av/codec/h265"
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"bitbucket.org/ausocean/av/codec/mjpeg"
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"bitbucket.org/ausocean/av/container/flv"
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"bitbucket.org/ausocean/av/container/mts"
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"bitbucket.org/ausocean/av/device"
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"bitbucket.org/ausocean/av/device/file"
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"bitbucket.org/ausocean/av/device/geovision"
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"bitbucket.org/ausocean/av/device/raspivid"
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"bitbucket.org/ausocean/av/device/webcam"
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"bitbucket.org/ausocean/av/filter"
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"bitbucket.org/ausocean/av/revid/config"
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"bitbucket.org/ausocean/utils/ioext"
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"bitbucket.org/ausocean/utils/logger"
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"bitbucket.org/ausocean/utils/ring"
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)
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// TODO(Saxon): put more thought into error severity and how to handle these.
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func (r *Revid) handleErrors() {
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for {
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err := <-r.err
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if err != nil {
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r.cfg.Logger.Log(logger.Error, "async error", "error", err.Error())
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}
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}
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}
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// reset swaps the current config of a Revid with the passed
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// configuration; checking validity and returning errors if not valid. It then
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// sets up the data pipeline accordingly to this configuration.
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func (r *Revid) reset(c config.Config) error {
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r.cfg.Logger.Log(logger.Debug, "setting config")
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err := r.setConfig(c)
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if err != nil {
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return err
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}
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r.cfg.Logger.Log(logger.Info, "config set")
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r.cfg.Logger.Log(logger.Debug, "setting up revid pipeline")
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err = r.setupPipeline(
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func(dst io.WriteCloser, rate float64) (io.WriteCloser, error) {
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var st int
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var encOptions []func(*mts.Encoder) error
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switch r.cfg.Input {
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case config.InputRaspivid, config.InputFile, config.InputV4L, config.InputRTSP:
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switch r.cfg.InputCodec {
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case codecutil.H265:
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if r.cfg.Input != config.InputRTSP {
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panic("H265 codec valid only for InputRTSP")
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}
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st = mts.EncodeH265
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case codecutil.H264:
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st = mts.EncodeH264
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case codecutil.MJPEG:
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st = mts.EncodeMJPEG
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encOptions = append(encOptions, mts.TimeBasedPSI(time.Duration(r.cfg.PSITime)*time.Second))
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r.cfg.CBR = true
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default:
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panic("unknown input codec for Raspivid, File, V4l or RTSP input")
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}
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case config.InputAudio:
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st = mts.EncodeAudio
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encOptions = append(encOptions, mts.TimeBasedPSI(time.Duration(r.cfg.PSITime)*time.Second))
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rate = 1 / r.cfg.RecPeriod
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default:
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panic("unknown input type")
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}
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encOptions = append(encOptions, mts.MediaType(st), mts.Rate(rate))
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return mts.NewEncoder(dst, &encLog{r.cfg.Logger}, encOptions...)
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},
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func(dst io.WriteCloser, fps int) (io.WriteCloser, error) {
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return flv.NewEncoder(dst, true, true, fps)
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},
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ioext.MultiWriteCloser,
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)
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r.cfg.Logger.Log(logger.Info, "finished setting pipeline")
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if err != nil {
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return err
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}
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return nil
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}
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// setConfig takes a config, checks it's validity and then replaces the current
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// revid config.
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func (r *Revid) setConfig(config config.Config) error {
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r.cfg.Logger = config.Logger
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r.cfg.Logger.Log(logger.Debug, "validating config")
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err := config.Validate()
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if err != nil {
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return errors.New("Config struct is bad: " + err.Error())
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}
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r.cfg.Logger.Log(logger.Info, "config validated")
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r.cfg = config
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r.cfg.Logger.SetLevel(r.cfg.LogLevel)
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return nil
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}
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// setupPipeline constructs the revid dataPipeline. Inputs, encoders and
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// senders are created and linked based on the current revid config.
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//
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// mtsEnc and flvEnc will be called to obtain an mts encoder and flv encoder
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// respectively. multiWriter will be used to create an ioext.multiWriteCloser
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// so that encoders can write to multiple senders.
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func (r *Revid) setupPipeline(mtsEnc func(dst io.WriteCloser, rate float64) (io.WriteCloser, error), flvEnc func(dst io.WriteCloser, rate int) (io.WriteCloser, error), multiWriter func(...io.WriteCloser) io.WriteCloser) error {
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// encoders will hold the encoders that are required for revid's current
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// configuration.
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var encoders []io.WriteCloser
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// mtsSenders will hold the senders the require MPEGTS encoding, and flvSenders
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// will hold senders that require FLV encoding.
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var mtsSenders, flvSenders []io.WriteCloser
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// Calculate no. of ring buffer elements based on starting element size
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// const and config directed max ring buffer size, then create buffer.
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// This is only used if the selected output uses a ring buffer.
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nElements := r.cfg.RBCapacity / rbStartingElementSize
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writeTimeout := time.Duration(r.cfg.RBWriteTimeout) * time.Second
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// We will go through our outputs and create the corresponding senders to add
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// to mtsSenders if the output requires MPEGTS encoding, or flvSenders if the
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// output requires FLV encoding.
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var w io.WriteCloser
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for _, out := range r.cfg.Outputs {
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switch out {
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case config.OutputHTTP:
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r.cfg.Logger.Log(logger.Debug, "using HTTP output")
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rb := ring.NewBuffer(rbStartingElementSize, int(nElements), writeTimeout)
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hs := newHTTPSender(r.ns, r.cfg.Logger.Log, r.bitrate.Report)
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w = newMTSSender(hs, r.cfg.Logger.Log, rb, r.cfg.ClipDuration)
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mtsSenders = append(mtsSenders, w)
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case config.OutputRTP:
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r.cfg.Logger.Log(logger.Debug, "using RTP output")
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w, err := newRtpSender(r.cfg.RTPAddress, r.cfg.Logger.Log, r.cfg.FrameRate, r.bitrate.Report)
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if err != nil {
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r.cfg.Logger.Log(logger.Warning, "rtp connect error", "error", err.Error())
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}
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mtsSenders = append(mtsSenders, w)
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case config.OutputFile:
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r.cfg.Logger.Log(logger.Debug, "using File output")
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w, err := newFileSender(r.cfg.OutputPath)
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if err != nil {
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return err
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}
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mtsSenders = append(mtsSenders, w)
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case config.OutputRTMP:
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r.cfg.Logger.Log(logger.Debug, "using RTMP output")
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rb := ring.NewBuffer(rbStartingElementSize, int(nElements), writeTimeout)
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w, err := newRtmpSender(r.cfg.RTMPURL, rtmpConnectionMaxTries, rb, r.cfg.Logger.Log, r.bitrate.Report)
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if err != nil {
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r.cfg.Logger.Log(logger.Warning, "rtmp connect error", "error", err.Error())
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}
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flvSenders = append(flvSenders, w)
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}
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}
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// If we have some senders that require MPEGTS encoding then add an MPEGTS
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// encoder to revid's encoder slice, and give this encoder the mtsSenders
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// as a destination.
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if len(mtsSenders) != 0 {
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mw := multiWriter(mtsSenders...)
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e, _ := mtsEnc(mw, float64(r.cfg.FrameRate))
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encoders = append(encoders, e)
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}
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// If we have some senders that require FLV encoding then add an FLV
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// encoder to revid's encoder slice, and give this encoder the flvSenders
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// as a destination.
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if len(flvSenders) != 0 {
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mw := multiWriter(flvSenders...)
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e, err := flvEnc(mw, int(r.cfg.FrameRate))
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if err != nil {
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return err
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}
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encoders = append(encoders, e)
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}
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r.encoders = multiWriter(encoders...)
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l := len(r.cfg.Filters)
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r.filters = []filter.Filter{filter.NewNoOp(r.encoders)}
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if l != 0 {
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r.cfg.Logger.Log(logger.Debug, "setting up filters", "filters", r.cfg.Filters)
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r.filters = make([]filter.Filter, l)
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dst := r.encoders
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for i := l - 1; i >= 0; i-- {
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switch r.cfg.Filters[i] {
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case config.FilterNoOp:
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r.cfg.Logger.Log(logger.Debug, "using NoOp filter")
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r.filters[i] = filter.NewNoOp(dst)
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case config.FilterMOG:
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r.cfg.Logger.Log(logger.Debug, "using MOG filter")
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r.filters[i] = filter.NewMOG(dst, r.cfg)
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case config.FilterVariableFPS:
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r.cfg.Logger.Log(logger.Debug, "using Variable FPS MOG filter")
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r.filters[i] = filter.NewVariableFPS(dst, r.cfg.MinFPS, filter.NewMOG(dst, r.cfg))
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case config.FilterKNN:
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r.cfg.Logger.Log(logger.Debug, "using KNN filter")
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r.filters[i] = filter.NewKNN(dst, r.cfg)
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case config.FilterDiff:
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r.cfg.Logger.Log(logger.Debug, "using gocv difference filter")
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r.filters[i] = filter.NewDiff(dst, r.cfg)
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case config.FilterBasic:
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r.cfg.Logger.Log(logger.Debug, "using go difference filter")
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r.filters[i] = filter.NewBasic(dst, r.cfg)
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default:
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panic("Undefined Filter")
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}
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dst = r.filters[i]
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}
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r.cfg.Logger.Log(logger.Info, "filters set up")
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}
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switch r.cfg.Input {
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case config.InputRaspivid:
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r.cfg.Logger.Log(logger.Debug, "using raspivid input")
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r.input = raspivid.New(r.cfg.Logger)
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r.setLexer(r.cfg.InputCodec, false)
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case config.InputV4L:
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r.cfg.Logger.Log(logger.Debug, "using V4L input")
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r.input = webcam.New(r.cfg.Logger)
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r.setLexer(r.cfg.InputCodec, false)
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case config.InputFile:
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r.cfg.Logger.Log(logger.Debug, "using file input")
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r.input = file.New()
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r.setLexer(r.cfg.InputCodec, false)
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case config.InputRTSP:
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r.cfg.Logger.Log(logger.Debug, "using RTSP input")
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r.input = geovision.New(r.cfg.Logger)
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r.setLexer(r.cfg.InputCodec, true)
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case config.InputAudio:
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r.cfg.Logger.Log(logger.Debug, "using audio input")
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err := r.setupAudio()
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if err != nil {
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return err
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}
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}
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// Configure the input device. We know that defaults are set, so no need to
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// return error, but we should log.
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r.cfg.Logger.Log(logger.Debug, "configuring input device")
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err := r.input.Set(r.cfg)
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if err != nil {
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r.cfg.Logger.Log(logger.Warning, "errors from configuring input device", "errors", err)
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}
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r.cfg.Logger.Log(logger.Info, "input device configured")
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return nil
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}
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// setLexer sets the revid input lexer based on input codec and whether input
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// is RTSP or not, in which case an RTP/<codec> extractor is used.
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func (r *Revid) setLexer(c uint8, isRTSP bool) {
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switch c {
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case codecutil.H264:
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r.cfg.Logger.Log(logger.Debug, "using H.264 codec")
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r.lexTo = h264.Lex
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if isRTSP {
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r.lexTo = h264.NewExtractor().Extract
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}
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case codecutil.H265:
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r.cfg.Logger.Log(logger.Debug, "using H.265 codec")
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r.lexTo = h265.NewExtractor(false).Extract
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if !isRTSP {
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panic("byte stream H.265 lexing not implemented")
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}
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case codecutil.MJPEG:
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r.cfg.Logger.Log(logger.Debug, "using MJPEG codec")
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r.lexTo = mjpeg.Lex
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if isRTSP {
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r.lexTo = mjpeg.NewExtractor().Extract
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}
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default:
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panic("unrecognised codec")
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}
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}
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// processFrom is run as a routine to read from a input data source, lex and
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// then send individual access units to revid's encoders.
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func (r *Revid) processFrom(in device.AVDevice, delay time.Duration) {
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defer r.wg.Done()
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for l := true; l; l = r.cfg.Loop {
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err := in.Start()
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if err != nil {
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r.err <- fmt.Errorf("could not start input device: %w", err)
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return
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}
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// Lex data from input device, in, until finished or an error is encountered.
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// For a continuous source e.g. a camera or microphone, we should remain
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// in this call indefinitely unless in.Stop() is called and an io.EOF is forced.
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r.cfg.Logger.Log(logger.Debug, "lexing")
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err = r.lexTo(r.filters[0], in, delay)
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switch err {
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case nil, io.EOF:
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r.cfg.Logger.Log(logger.Info, "end of file")
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case io.ErrUnexpectedEOF:
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r.cfg.Logger.Log(logger.Info, "unexpected EOF from input")
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default:
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r.err <- err
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}
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r.cfg.Logger.Log(logger.Info, "finished reading input")
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r.cfg.Logger.Log(logger.Debug, "stopping input")
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err = in.Stop()
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if err != nil {
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r.err <- fmt.Errorf("could not stop input source: %w", err)
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} else {
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r.cfg.Logger.Log(logger.Info, "input stopped")
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}
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// If we're looping and we get a stop signal we return.
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select {
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case <-r.stop:
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return
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default:
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}
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}
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}
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355
revid/revid.go
355
revid/revid.go
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@ -30,30 +30,17 @@ LICENSE
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package revid
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||||
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import (
|
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"errors"
|
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"fmt"
|
||||
"io"
|
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"sync"
|
||||
"time"
|
||||
|
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"bitbucket.org/ausocean/av/codec/codecutil"
|
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"bitbucket.org/ausocean/av/codec/h264"
|
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"bitbucket.org/ausocean/av/codec/h265"
|
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"bitbucket.org/ausocean/av/codec/mjpeg"
|
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"bitbucket.org/ausocean/av/container/flv"
|
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"bitbucket.org/ausocean/av/container/mts"
|
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"bitbucket.org/ausocean/av/device"
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"bitbucket.org/ausocean/av/device/file"
|
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"bitbucket.org/ausocean/av/device/geovision"
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"bitbucket.org/ausocean/av/device/raspivid"
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"bitbucket.org/ausocean/av/device/webcam"
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"bitbucket.org/ausocean/av/filter"
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"bitbucket.org/ausocean/av/revid/config"
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"bitbucket.org/ausocean/iot/pi/netsender"
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"bitbucket.org/ausocean/utils/bitrate"
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"bitbucket.org/ausocean/utils/ioext"
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"bitbucket.org/ausocean/utils/logger"
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"bitbucket.org/ausocean/utils/ring"
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)
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// Misc consts.
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@ -106,9 +93,6 @@ type Revid struct {
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// running is used to keep track of revid's running state between methods.
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running bool
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// mu is used to protect isRunning during concurrent use.
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mu sync.Mutex
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// wg will be used to wait for any processing routines to finish.
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wg sync.WaitGroup
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|
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@ -135,299 +119,23 @@ func New(c config.Config, ns *netsender.Sender) (*Revid, error) {
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}
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// Config returns a copy of revids current config.
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//
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// Config is not safe for concurrent use.
|
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func (r *Revid) Config() config.Config {
|
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return r.cfg
|
||||
}
|
||||
|
||||
// TODO(Saxon): put more thought into error severity and how to handle these.
|
||||
func (r *Revid) handleErrors() {
|
||||
for {
|
||||
err := <-r.err
|
||||
if err != nil {
|
||||
r.cfg.Logger.Log(logger.Error, "async error", "error", err.Error())
|
||||
}
|
||||
}
|
||||
}
|
||||
|
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// Bitrate returns the result of the most recent bitrate check.
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func (r *Revid) Bitrate() int {
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return r.bitrate.Bitrate()
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||||
}
|
||||
|
||||
// reset swaps the current config of a Revid with the passed
|
||||
// configuration; checking validity and returning errors if not valid. It then
|
||||
// sets up the data pipeline accordingly to this configuration.
|
||||
func (r *Revid) reset(c config.Config) error {
|
||||
r.cfg.Logger.Log(logger.Debug, "setting config")
|
||||
err := r.setConfig(c)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
r.cfg.Logger.Log(logger.Info, "config set")
|
||||
|
||||
r.cfg.Logger.Log(logger.Debug, "setting up revid pipeline")
|
||||
|
||||
err = r.setupPipeline(
|
||||
func(dst io.WriteCloser, rate float64) (io.WriteCloser, error) {
|
||||
var st int
|
||||
var encOptions []func(*mts.Encoder) error
|
||||
|
||||
switch r.cfg.Input {
|
||||
case config.InputRaspivid,config.InputFile, config.InputV4L,config.InputRTSP:
|
||||
switch r.cfg.InputCodec {
|
||||
case codecutil.H265:
|
||||
if r.cfg.Input != config.InputRTSP {
|
||||
panic("H265 codec valid only for InputRTSP")
|
||||
}
|
||||
st = mts.EncodeH265
|
||||
case codecutil.H264:
|
||||
st = mts.EncodeH264
|
||||
case codecutil.MJPEG:
|
||||
st = mts.EncodeMJPEG
|
||||
encOptions = append(encOptions, mts.TimeBasedPSI(time.Duration(r.cfg.PSITime)*time.Second))
|
||||
r.cfg.CBR = true
|
||||
default:
|
||||
panic("unknown input codec for Raspivid, File, V4l or RTSP input")
|
||||
}
|
||||
case config.InputAudio:
|
||||
st = mts.EncodeAudio
|
||||
encOptions = append(encOptions, mts.TimeBasedPSI(time.Duration(r.cfg.PSITime)*time.Second))
|
||||
rate = 1 / r.cfg.RecPeriod
|
||||
default:
|
||||
panic("unknown input type")
|
||||
}
|
||||
encOptions = append(encOptions, mts.MediaType(st), mts.Rate(rate))
|
||||
return mts.NewEncoder(dst, &encLog{r.cfg.Logger}, encOptions...)
|
||||
},
|
||||
func(dst io.WriteCloser, fps int) (io.WriteCloser, error) {
|
||||
return flv.NewEncoder(dst, true, true, fps)
|
||||
},
|
||||
ioext.MultiWriteCloser,
|
||||
)
|
||||
r.cfg.Logger.Log(logger.Info, "finished setting pipeline")
|
||||
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// setConfig takes a config, checks it's validity and then replaces the current
|
||||
// revid config.
|
||||
func (r *Revid) setConfig(config config.Config) error {
|
||||
r.cfg.Logger = config.Logger
|
||||
r.cfg.Logger.Log(logger.Debug, "validating config")
|
||||
err := config.Validate()
|
||||
if err != nil {
|
||||
return errors.New("Config struct is bad: " + err.Error())
|
||||
}
|
||||
r.cfg.Logger.Log(logger.Info, "config validated")
|
||||
r.cfg = config
|
||||
r.cfg.Logger.SetLevel(r.cfg.LogLevel)
|
||||
return nil
|
||||
}
|
||||
|
||||
// setupPipeline constructs the revid dataPipeline. Inputs, encoders and
|
||||
// senders are created and linked based on the current revid config.
|
||||
//
|
||||
// mtsEnc and flvEnc will be called to obtain an mts encoder and flv encoder
|
||||
// respectively. multiWriter will be used to create an ioext.multiWriteCloser
|
||||
// so that encoders can write to multiple senders.
|
||||
func (r *Revid) setupPipeline(mtsEnc func(dst io.WriteCloser, rate float64) (io.WriteCloser, error), flvEnc func(dst io.WriteCloser, rate int) (io.WriteCloser, error), multiWriter func(...io.WriteCloser) io.WriteCloser) error {
|
||||
// encoders will hold the encoders that are required for revid's current
|
||||
// configuration.
|
||||
var encoders []io.WriteCloser
|
||||
|
||||
// mtsSenders will hold the senders the require MPEGTS encoding, and flvSenders
|
||||
// will hold senders that require FLV encoding.
|
||||
var mtsSenders, flvSenders []io.WriteCloser
|
||||
|
||||
// Calculate no. of ring buffer elements based on starting element size
|
||||
// const and config directed max ring buffer size, then create buffer.
|
||||
// This is only used if the selected output uses a ring buffer.
|
||||
nElements := r.cfg.RBCapacity / rbStartingElementSize
|
||||
writeTimeout := time.Duration(r.cfg.RBWriteTimeout) * time.Second
|
||||
|
||||
// We will go through our outputs and create the corresponding senders to add
|
||||
// to mtsSenders if the output requires MPEGTS encoding, or flvSenders if the
|
||||
// output requires FLV encoding.
|
||||
var w io.WriteCloser
|
||||
for _, out := range r.cfg.Outputs {
|
||||
switch out {
|
||||
case config.OutputHTTP:
|
||||
r.cfg.Logger.Log(logger.Debug, "using HTTP output")
|
||||
rb := ring.NewBuffer(rbStartingElementSize, int(nElements), writeTimeout)
|
||||
hs := newHTTPSender(r.ns, r.cfg.Logger.Log, r.bitrate.Report)
|
||||
w = newMTSSender(hs, r.cfg.Logger.Log, rb, r.cfg.ClipDuration)
|
||||
mtsSenders = append(mtsSenders, w)
|
||||
|
||||
case config.OutputRTP:
|
||||
r.cfg.Logger.Log(logger.Debug, "using RTP output")
|
||||
w, err := newRtpSender(r.cfg.RTPAddress, r.cfg.Logger.Log, r.cfg.FrameRate, r.bitrate.Report)
|
||||
if err != nil {
|
||||
r.cfg.Logger.Log(logger.Warning, "rtp connect error", "error", err.Error())
|
||||
}
|
||||
mtsSenders = append(mtsSenders, w)
|
||||
case config.OutputFile:
|
||||
r.cfg.Logger.Log(logger.Debug, "using File output")
|
||||
w, err := newFileSender(r.cfg.OutputPath)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
mtsSenders = append(mtsSenders, w)
|
||||
case config.OutputRTMP:
|
||||
r.cfg.Logger.Log(logger.Debug, "using RTMP output")
|
||||
rb := ring.NewBuffer(rbStartingElementSize, int(nElements), writeTimeout)
|
||||
w, err := newRtmpSender(r.cfg.RTMPURL, rtmpConnectionMaxTries, rb, r.cfg.Logger.Log, r.bitrate.Report)
|
||||
if err != nil {
|
||||
r.cfg.Logger.Log(logger.Warning, "rtmp connect error", "error", err.Error())
|
||||
}
|
||||
flvSenders = append(flvSenders, w)
|
||||
}
|
||||
}
|
||||
|
||||
// If we have some senders that require MPEGTS encoding then add an MPEGTS
|
||||
// encoder to revid's encoder slice, and give this encoder the mtsSenders
|
||||
// as a destination.
|
||||
if len(mtsSenders) != 0 {
|
||||
mw := multiWriter(mtsSenders...)
|
||||
e, _ := mtsEnc(mw, float64(r.cfg.FrameRate))
|
||||
encoders = append(encoders, e)
|
||||
}
|
||||
|
||||
// If we have some senders that require FLV encoding then add an FLV
|
||||
// encoder to revid's encoder slice, and give this encoder the flvSenders
|
||||
// as a destination.
|
||||
if len(flvSenders) != 0 {
|
||||
mw := multiWriter(flvSenders...)
|
||||
e, err := flvEnc(mw, int(r.cfg.FrameRate))
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
encoders = append(encoders, e)
|
||||
}
|
||||
|
||||
r.encoders = multiWriter(encoders...)
|
||||
|
||||
l := len(r.cfg.Filters)
|
||||
r.filters = []filter.Filter{filter.NewNoOp(r.encoders)}
|
||||
if l != 0 {
|
||||
r.cfg.Logger.Log(logger.Debug, "setting up filters", "filters", r.cfg.Filters)
|
||||
r.filters = make([]filter.Filter, l)
|
||||
dst := r.encoders
|
||||
|
||||
for i := l - 1; i >= 0; i-- {
|
||||
switch r.cfg.Filters[i] {
|
||||
case config.FilterNoOp:
|
||||
r.cfg.Logger.Log(logger.Debug, "using NoOp filter")
|
||||
r.filters[i] = filter.NewNoOp(dst)
|
||||
case config.FilterMOG:
|
||||
r.cfg.Logger.Log(logger.Debug, "using MOG filter")
|
||||
r.filters[i] = filter.NewMOG(dst, r.cfg)
|
||||
case config.FilterVariableFPS:
|
||||
r.cfg.Logger.Log(logger.Debug, "using Variable FPS MOG filter")
|
||||
r.filters[i] = filter.NewVariableFPS(dst, r.cfg.MinFPS, filter.NewMOG(dst, r.cfg))
|
||||
case config.FilterKNN:
|
||||
r.cfg.Logger.Log(logger.Debug, "using KNN filter")
|
||||
r.filters[i] = filter.NewKNN(dst, r.cfg)
|
||||
case config.FilterDiff:
|
||||
r.cfg.Logger.Log(logger.Debug, "using gocv difference filter")
|
||||
r.filters[i] = filter.NewDiff(dst, r.cfg)
|
||||
case config.FilterBasic:
|
||||
r.cfg.Logger.Log(logger.Debug, "using go difference filter")
|
||||
r.filters[i] = filter.NewBasic(dst, r.cfg)
|
||||
default:
|
||||
panic("Undefined Filter")
|
||||
}
|
||||
dst = r.filters[i]
|
||||
}
|
||||
r.cfg.Logger.Log(logger.Info, "filters set up")
|
||||
}
|
||||
|
||||
switch r.cfg.Input {
|
||||
case config.InputRaspivid:
|
||||
r.cfg.Logger.Log(logger.Debug, "using raspivid input")
|
||||
r.input = raspivid.New(r.cfg.Logger)
|
||||
r.setLexer(r.cfg.InputCodec, false)
|
||||
|
||||
case config.InputV4L:
|
||||
r.cfg.Logger.Log(logger.Debug, "using V4L input")
|
||||
r.input = webcam.New(r.cfg.Logger)
|
||||
r.setLexer(r.cfg.InputCodec, false)
|
||||
|
||||
case config.InputFile:
|
||||
r.cfg.Logger.Log(logger.Debug, "using file input")
|
||||
r.input = file.New()
|
||||
r.setLexer(r.cfg.InputCodec, false)
|
||||
|
||||
case config.InputRTSP:
|
||||
r.cfg.Logger.Log(logger.Debug, "using RTSP input")
|
||||
r.input = geovision.New(r.cfg.Logger)
|
||||
r.setLexer(r.cfg.InputCodec, true)
|
||||
|
||||
case config.InputAudio:
|
||||
r.cfg.Logger.Log(logger.Debug, "using audio input")
|
||||
err := r.setupAudio()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
// Configure the input device. We know that defaults are set, so no need to
|
||||
// return error, but we should log.
|
||||
r.cfg.Logger.Log(logger.Debug, "configuring input device")
|
||||
err := r.input.Set(r.cfg)
|
||||
if err != nil {
|
||||
r.cfg.Logger.Log(logger.Warning, "errors from configuring input device", "errors", err)
|
||||
}
|
||||
r.cfg.Logger.Log(logger.Info, "input device configured")
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// setLexer sets the revid input lexer based on input codec and whether input
|
||||
// is RTSP or not, in which case an RTP/<codec> extractor is used.
|
||||
func (r *Revid) setLexer(c uint8, isRTSP bool) {
|
||||
switch c {
|
||||
case codecutil.H264:
|
||||
r.cfg.Logger.Log(logger.Debug, "using H.264 codec")
|
||||
r.lexTo = h264.Lex
|
||||
if isRTSP {
|
||||
r.lexTo = h264.NewExtractor().Extract
|
||||
}
|
||||
case codecutil.H265:
|
||||
r.cfg.Logger.Log(logger.Debug, "using H.265 codec")
|
||||
r.lexTo = h265.NewExtractor(false).Extract
|
||||
if !isRTSP {
|
||||
panic("byte stream H.265 lexing not implemented")
|
||||
}
|
||||
case codecutil.MJPEG:
|
||||
r.cfg.Logger.Log(logger.Debug, "using MJPEG codec")
|
||||
r.lexTo = mjpeg.Lex
|
||||
if isRTSP {
|
||||
r.lexTo = mjpeg.NewExtractor().Extract
|
||||
}
|
||||
default:
|
||||
panic("unrecognised codec")
|
||||
}
|
||||
}
|
||||
|
||||
// Start invokes a Revid to start processing video from a defined input
|
||||
// and packetising (if theres packetization) to a defined output.
|
||||
//
|
||||
// Start is safe for concurrent use.
|
||||
func (r *Revid) Start() error {
|
||||
if r.IsRunning() {
|
||||
if r.running {
|
||||
r.cfg.Logger.Log(logger.Warning, "start called, but revid already running")
|
||||
return nil
|
||||
}
|
||||
|
||||
r.mu.Lock()
|
||||
defer r.mu.Unlock()
|
||||
|
||||
r.stop = make(chan struct{})
|
||||
|
||||
r.cfg.Logger.Log(logger.Debug, "resetting revid")
|
||||
|
|
@ -457,17 +165,12 @@ func (r *Revid) Start() error {
|
|||
|
||||
// Stop closes down the pipeline. This closes encoders and sender output routines,
|
||||
// connections, and/or files.
|
||||
//
|
||||
// Stop is safe for concurrent use.
|
||||
func (r *Revid) Stop() {
|
||||
if !r.IsRunning() {
|
||||
if !r.running {
|
||||
r.cfg.Logger.Log(logger.Warning, "stop called but revid isn't running")
|
||||
return
|
||||
}
|
||||
|
||||
r.mu.Lock()
|
||||
defer r.mu.Unlock()
|
||||
|
||||
close(r.stop)
|
||||
|
||||
r.cfg.Logger.Log(logger.Debug, "stopping input")
|
||||
|
|
@ -521,25 +224,19 @@ func (r *Revid) Burst() error {
|
|||
return nil
|
||||
}
|
||||
|
||||
func (r *Revid) IsRunning() bool {
|
||||
r.mu.Lock()
|
||||
defer r.mu.Unlock()
|
||||
func (r *Revid) Running() bool {
|
||||
return r.running
|
||||
}
|
||||
|
||||
// Update takes a map of variables and their values and edits the current config
|
||||
// if the variables are recognised as valid parameters.
|
||||
//
|
||||
// Update is safe for concurrent use.
|
||||
func (r *Revid) Update(vars map[string]string) error {
|
||||
if r.IsRunning() {
|
||||
if r.running {
|
||||
r.cfg.Logger.Log(logger.Debug, "revid running; stopping for re-config")
|
||||
r.Stop()
|
||||
r.cfg.Logger.Log(logger.Info, "revid was running; stopped for re-config")
|
||||
}
|
||||
|
||||
r.mu.Lock()
|
||||
defer r.mu.Unlock()
|
||||
//look through the vars and update revid where needed
|
||||
r.cfg.Logger.Log(logger.Debug, "checking vars from server", "vars", vars)
|
||||
r.cfg.Update(vars)
|
||||
|
|
@ -547,47 +244,3 @@ func (r *Revid) Update(vars map[string]string) error {
|
|||
r.cfg.Logger.Log(logger.Debug, "config changed", "config", r.cfg)
|
||||
return nil
|
||||
}
|
||||
|
||||
// processFrom is run as a routine to read from a input data source, lex and
|
||||
// then send individual access units to revid's encoders.
|
||||
func (r *Revid) processFrom(in device.AVDevice, delay time.Duration) {
|
||||
defer r.wg.Done()
|
||||
|
||||
for l := true; l; l = r.cfg.Loop {
|
||||
err := in.Start()
|
||||
if err != nil {
|
||||
r.err <- fmt.Errorf("could not start input device: %w", err)
|
||||
return
|
||||
}
|
||||
|
||||
// Lex data from input device, in, until finished or an error is encountered.
|
||||
// For a continuous source e.g. a camera or microphone, we should remain
|
||||
// in this call indefinitely unless in.Stop() is called and an io.EOF is forced.
|
||||
r.cfg.Logger.Log(logger.Debug, "lexing")
|
||||
err = r.lexTo(r.filters[0], in, delay)
|
||||
switch err {
|
||||
case nil, io.EOF:
|
||||
r.cfg.Logger.Log(logger.Info, "end of file")
|
||||
case io.ErrUnexpectedEOF:
|
||||
r.cfg.Logger.Log(logger.Info, "unexpected EOF from input")
|
||||
default:
|
||||
r.err <- err
|
||||
}
|
||||
r.cfg.Logger.Log(logger.Info, "finished reading input")
|
||||
|
||||
r.cfg.Logger.Log(logger.Debug, "stopping input")
|
||||
err = in.Stop()
|
||||
if err != nil {
|
||||
r.err <- fmt.Errorf("could not stop input source: %w", err)
|
||||
} else {
|
||||
r.cfg.Logger.Log(logger.Info, "input stopped")
|
||||
}
|
||||
|
||||
// If we're looping and we get a stop signal we return.
|
||||
select {
|
||||
case <-r.stop:
|
||||
return
|
||||
default:
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue