mirror of
https://github.com/m1k1o/neko.git
synced 2024-07-24 14:40:50 +12:00
203 lines
7.5 KiB
Go
203 lines
7.5 KiB
Go
package capture
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import (
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"fmt"
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"strings"
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"m1k1o/neko/internal/capture/gst"
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"m1k1o/neko/internal/types/codec"
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)
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/*
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apt-get install \
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libgstreamer1.0-0 \
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gstreamer1.0-plugins-base \
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gstreamer1.0-plugins-good \
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gstreamer1.0-plugins-bad \
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gstreamer1.0-plugins-ugly\
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gstreamer1.0-libav \
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gstreamer1.0-doc \
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gstreamer1.0-tools \
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gstreamer1.0-x \
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gstreamer1.0-alsa \
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gstreamer1.0-pulseaudio
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gst-inspect-1.0 --version
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gst-inspect-1.0 plugin
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gst-launch-1.0 ximagesrc show-pointer=true use-damage=false ! video/x-raw,framerate=30/1 ! videoconvert ! queue ! vp8enc error-resilient=partitions keyframe-max-dist=10 auto-alt-ref=true cpu-used=5 deadline=1 ! autovideosink
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gst-launch-1.0 pulsesrc ! audioconvert ! opusenc ! autoaudiosink
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*/
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const (
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videoSrc = "ximagesrc display-name=%s show-pointer=true use-damage=false ! video/x-raw,framerate=%d/1 ! videoconvert ! queue ! "
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audioSrc = "pulsesrc device=%s ! audio/x-raw,channels=2 ! audioconvert ! "
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)
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func NewBroadcastPipeline(device string, display string, pipelineSrc string, url string) (string, error) {
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video := fmt.Sprintf(videoSrc, display, 25)
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audio := fmt.Sprintf(audioSrc, device)
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var pipelineStr string
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if pipelineSrc != "" {
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// replace RTMP url
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pipelineStr = strings.Replace(pipelineSrc, "{url}", url, -1)
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// replace audio device
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pipelineStr = strings.Replace(pipelineStr, "{device}", device, -1)
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// replace display
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pipelineStr = strings.Replace(pipelineStr, "{display}", display, -1)
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} else {
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pipelineStr = fmt.Sprintf("flvmux name=mux ! rtmpsink location='%s live=1' %s audio/x-raw,channels=2 ! audioconvert ! voaacenc ! mux. %s x264enc bframes=0 key-int-max=60 byte-stream=true tune=zerolatency speed-preset=veryfast ! mux.", url, audio, video)
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}
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return pipelineStr, nil
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}
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func NewVideoPipeline(rtpCodec codec.RTPCodec, display string, pipelineSrc string, fps int16, bitrate uint, hwenc string) (string, error) {
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pipelineStr := " ! appsink name=appsink"
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// if using custom pipeline
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if pipelineSrc != "" {
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pipelineStr = fmt.Sprintf(pipelineSrc+pipelineStr, display)
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return pipelineStr, nil
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}
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switch rtpCodec.Name {
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case codec.VP8().Name:
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if hwenc == "VAAPI" {
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if err := gst.CheckPlugins([]string{"ximagesrc", "vaapi"}); err != nil {
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return "", err
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}
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// vp8 encode is missing from gstreamer.freedesktop.org/documentation
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// note that it was removed from some recent intel CPUs: https://trac.ffmpeg.org/wiki/Hardware/QuickSync
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// https://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer-vaapi-plugins/html/gstreamer-vaapi-plugins-vaapivp8enc.html
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pipelineStr = fmt.Sprintf(videoSrc+"video/x-raw,format=NV12 ! vaapivp8enc rate-control=vbr bitrate=%d keyframe-period=180"+pipelineStr, display, fps, bitrate)
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} else {
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// https://gstreamer.freedesktop.org/documentation/vpx/vp8enc.html?gi-language=c
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// gstreamer1.0-plugins-good
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// vp8enc error-resilient=partitions keyframe-max-dist=10 auto-alt-ref=true cpu-used=5 deadline=1
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if err := gst.CheckPlugins([]string{"ximagesrc", "vpx"}); err != nil {
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return "", err
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}
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pipelineStr = strings.Join([]string{
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fmt.Sprintf(videoSrc, display, fps),
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"vp8enc",
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fmt.Sprintf("target-bitrate=%d", bitrate*650),
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"cpu-used=4",
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"end-usage=cbr",
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"threads=4",
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"deadline=1",
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"undershoot=95",
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fmt.Sprintf("buffer-size=%d", bitrate*4),
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fmt.Sprintf("buffer-initial-size=%d", bitrate*2),
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fmt.Sprintf("buffer-optimal-size=%d", bitrate*3),
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"keyframe-max-dist=25",
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"min-quantizer=4",
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"max-quantizer=20",
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pipelineStr,
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}, " ")
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}
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case codec.VP9().Name:
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// https://gstreamer.freedesktop.org/documentation/vpx/vp9enc.html?gi-language=c
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// gstreamer1.0-plugins-good
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// vp9enc
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if err := gst.CheckPlugins([]string{"ximagesrc", "vpx"}); err != nil {
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return "", err
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}
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pipelineStr = fmt.Sprintf(videoSrc+"vp9enc target-bitrate=%d cpu-used=-5 threads=4 deadline=1 keyframe-max-dist=30 auto-alt-ref=true"+pipelineStr, display, fps, bitrate*1000)
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case codec.H264().Name:
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if err := gst.CheckPlugins([]string{"ximagesrc"}); err != nil {
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return "", err
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}
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if hwenc == "VAAPI" {
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if err := gst.CheckPlugins([]string{"vaapi"}); err != nil {
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return "", err
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}
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pipelineStr = fmt.Sprintf(videoSrc+"video/x-raw,format=NV12 ! vaapih264enc rate-control=vbr bitrate=%d keyframe-period=180 quality-level=7 ! video/x-h264,stream-format=byte-stream"+pipelineStr, display, fps, bitrate)
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} else {
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// https://gstreamer.freedesktop.org/documentation/openh264/openh264enc.html?gi-language=c#openh264enc
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// gstreamer1.0-plugins-bad
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// openh264enc multi-thread=4 complexity=high bitrate=3072000 max-bitrate=4096000
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if err := gst.CheckPlugins([]string{"openh264"}); err == nil {
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pipelineStr = fmt.Sprintf(videoSrc+"openh264enc multi-thread=4 complexity=high bitrate=%d max-bitrate=%d ! video/x-h264,stream-format=byte-stream"+pipelineStr, display, fps, bitrate*1000, (bitrate+1024)*1000)
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break
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}
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// https://gstreamer.freedesktop.org/documentation/x264/index.html?gi-language=c
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// gstreamer1.0-plugins-ugly
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// video/x-raw,format=I420 ! x264enc bframes=0 key-int-max=60 byte-stream=true tune=zerolatency speed-preset=veryfast ! video/x-h264,stream-format=byte-stream
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if err := gst.CheckPlugins([]string{"x264"}); err != nil {
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return "", err
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}
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vbvbuf := uint(1000)
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if bitrate > 1000 {
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vbvbuf = bitrate
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}
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pipelineStr = fmt.Sprintf(videoSrc+"video/x-raw,format=NV12 ! x264enc threads=4 bitrate=%d key-int-max=60 vbv-buf-capacity=%d byte-stream=true tune=zerolatency speed-preset=veryfast ! video/x-h264,stream-format=byte-stream"+pipelineStr, display, fps, bitrate, vbvbuf)
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}
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default:
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return "", fmt.Errorf("unknown codec %s", rtpCodec.Name)
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}
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return pipelineStr, nil
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}
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func NewAudioPipeline(rtpCodec codec.RTPCodec, device string, pipelineSrc string, bitrate uint) (string, error) {
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pipelineStr := " ! appsink name=appsink"
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// if using custom pipeline
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if pipelineSrc != "" {
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pipelineStr = fmt.Sprintf(pipelineSrc+pipelineStr, device)
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return pipelineStr, nil
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}
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switch rtpCodec.Name {
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case codec.Opus().Name:
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// https://gstreamer.freedesktop.org/documentation/opus/opusenc.html
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// gstreamer1.0-plugins-base
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// opusenc
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if err := gst.CheckPlugins([]string{"pulseaudio", "opus"}); err != nil {
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return "", err
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}
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pipelineStr = fmt.Sprintf(audioSrc+"opusenc inband-fec=true bitrate=%d"+pipelineStr, device, bitrate*1000)
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case codec.G722().Name:
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// https://gstreamer.freedesktop.org/documentation/libav/avenc_g722.html?gi-language=c
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// gstreamer1.0-libav
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// avenc_g722
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if err := gst.CheckPlugins([]string{"pulseaudio", "libav"}); err != nil {
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return "", err
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}
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pipelineStr = fmt.Sprintf(audioSrc+"avenc_g722 bitrate=%d"+pipelineStr, device, bitrate*1000)
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case codec.PCMU().Name:
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// https://gstreamer.freedesktop.org/documentation/mulaw/mulawenc.html?gi-language=c
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// gstreamer1.0-plugins-good
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// audio/x-raw, rate=8000 ! mulawenc
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if err := gst.CheckPlugins([]string{"pulseaudio", "mulaw"}); err != nil {
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return "", err
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}
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pipelineStr = fmt.Sprintf(audioSrc+"audio/x-raw, rate=8000 ! mulawenc"+pipelineStr, device)
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case codec.PCMA().Name:
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// https://gstreamer.freedesktop.org/documentation/alaw/alawenc.html?gi-language=c
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// gstreamer1.0-plugins-good
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// audio/x-raw, rate=8000 ! alawenc
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if err := gst.CheckPlugins([]string{"pulseaudio", "alaw"}); err != nil {
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return "", err
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}
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pipelineStr = fmt.Sprintf(audioSrc+"audio/x-raw, rate=8000 ! alawenc"+pipelineStr, device)
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default:
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return "", fmt.Errorf("unknown codec %s", rtpCodec.Name)
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}
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return pipelineStr, nil
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}
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