neko/server/internal/capture/manager.go
2022-09-13 20:35:53 +02:00

202 lines
4.8 KiB
Go

package capture
import (
"fmt"
"time"
"m1k1o/neko/internal/capture/gst"
"m1k1o/neko/internal/config"
"m1k1o/neko/internal/desktop/xorg"
"m1k1o/neko/internal/types"
"github.com/kataras/go-events"
"github.com/rs/zerolog"
"github.com/rs/zerolog/log"
)
type CaptureManagerCtx struct {
logger zerolog.Logger
video *gst.Pipeline
audio *gst.Pipeline
config *config.Capture
broadcast types.BroadcastManager
desktop types.DesktopManager
cleanup *time.Ticker
shutdown chan bool
emmiter events.EventEmmiter
streaming bool
}
func New(desktop types.DesktopManager, broadcast types.BroadcastManager, config *config.Capture) *CaptureManagerCtx {
return &CaptureManagerCtx{
logger: log.With().Str("module", "capture").Logger(),
cleanup: time.NewTicker(1 * time.Second),
shutdown: make(chan bool),
emmiter: events.New(),
config: config,
broadcast: broadcast,
desktop: desktop,
streaming: false,
}
}
func (manager *CaptureManagerCtx) VideoCodec() string {
return manager.config.VideoCodec
}
func (manager *CaptureManagerCtx) AudioCodec() string {
return manager.config.AudioCodec
}
func (manager *CaptureManagerCtx) Start() {
manager.createPipelines()
if err := manager.broadcast.Start(); err != nil {
manager.logger.Panic().Err(err).Msg("unable to create rtmp pipeline")
}
go func() {
defer func() {
manager.logger.Info().Msg("shutdown")
}()
for {
select {
case <-manager.shutdown:
return
case sample := <-manager.video.Sample:
manager.emmiter.Emit("video", sample)
case sample := <-manager.audio.Sample:
manager.emmiter.Emit("audio", sample)
case <-manager.cleanup.C:
// TODO: refactor.
}
}
}()
}
func (manager *CaptureManagerCtx) Shutdown() error {
manager.logger.Info().Msgf("capture shutting down")
manager.video.Stop()
manager.audio.Stop()
manager.broadcast.Stop()
manager.cleanup.Stop()
manager.shutdown <- true
return nil
}
func (manager *CaptureManagerCtx) OnVideoFrame(listener func(sample types.Sample)) {
manager.emmiter.On("video", func(payload ...interface{}) {
listener(payload[0].(types.Sample))
})
}
func (manager *CaptureManagerCtx) OnAudioFrame(listener func(sample types.Sample)) {
manager.emmiter.On("audio", func(payload ...interface{}) {
listener(payload[0].(types.Sample))
})
}
func (manager *CaptureManagerCtx) StartStream() {
manager.createPipelines()
manager.logger.Info().
Str("video_display", manager.config.Display).
Str("video_codec", manager.config.VideoCodec).
Str("audio_device", manager.config.Device).
Str("audio_codec", manager.config.AudioCodec).
Str("audio_pipeline_src", manager.audio.Src).
Str("video_pipeline_src", manager.video.Src).
Msgf("Pipelines starting...")
manager.video.Start()
manager.audio.Start()
manager.streaming = true
}
func (manager *CaptureManagerCtx) StopStream() {
manager.logger.Info().Msgf("Pipelines shutting down...")
manager.video.Stop()
manager.audio.Stop()
manager.streaming = false
}
func (manager *CaptureManagerCtx) Streaming() bool {
return manager.streaming
}
func (manager *CaptureManagerCtx) createPipelines() {
// handle maximum fps
rate := int(manager.desktop.GetScreenSize().Rate)
if manager.config.MaxFPS != 0 && manager.config.MaxFPS < rate {
rate = manager.config.MaxFPS
}
var err error
manager.video, err = CreateAppPipeline(
manager.config.VideoCodec,
manager.config.Display,
manager.config.VideoParams,
rate,
manager.config.VideoBitrate,
manager.config.VideoHWEnc,
)
if err != nil {
manager.logger.Panic().Err(err).Msg("unable to create video pipeline")
}
manager.audio, err = CreateAppPipeline(
manager.config.AudioCodec,
manager.config.Device,
manager.config.AudioParams,
0, // fps: n/a for audio
manager.config.AudioBitrate,
"", // hwenc: n/a for audio
)
if err != nil {
manager.logger.Panic().Err(err).Msg("unable to create audio pipeline")
}
}
func (manager *CaptureManagerCtx) ChangeResolution(width int, height int, rate int) error {
if !xorg.ValidScreenSize(width, height, rate) {
return fmt.Errorf("unknown configuration")
}
manager.video.Stop()
manager.broadcast.Stop()
defer func() {
manager.video.Start()
if err := manager.broadcast.Start(); err != nil {
manager.logger.Panic().Err(err).Msg("unable to create rtmp pipeline")
}
manager.logger.Info().Msg("starting video pipeline...")
}()
if err := xorg.ChangeScreenSize(width, height, rate); err != nil {
return err
}
// handle maximum fps
if manager.config.MaxFPS != 0 && manager.config.MaxFPS < rate {
rate = manager.config.MaxFPS
}
var err error
manager.video, err = CreateAppPipeline(
manager.config.VideoCodec,
manager.config.Display,
manager.config.VideoParams,
rate,
manager.config.VideoBitrate,
manager.config.VideoHWEnc,
)
if err != nil {
manager.logger.Panic().Err(err).Msg("unable to create new video pipeline")
}
return nil
}