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start_bitrate property, to allow specifying initial (video) bitrate

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machenmusik 2022-05-04 13:34:44 -04:00 committed by Mathieu Duponchelle
parent 075a625305
commit ee950499d5
1 changed files with 31 additions and 8 deletions
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37
plugins/src/webrtcsink/imp.rs
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@ -50,6 +50,8 @@ const DEFAULT_DO_FEC: bool = true;
const DEFAULT_DO_RETRANSMISSION: bool = true;
const DEFAULT_ENABLE_DATA_CHANNEL_NAVIGATION: bool = false;
const DEFAULT_START_BITRATE: u32 = 2048000;
/// User configuration
struct Settings {
video_caps: gst::Caps,
@ -59,6 +61,7 @@ struct Settings {
cc_heuristic: WebRTCSinkCongestionControl,
min_bitrate: u32,
max_bitrate: u32,
start_bitrate: u32,
do_fec: bool,
do_retransmission: bool,
enable_data_channel_navigation: bool,
@ -268,6 +271,7 @@ impl Default for Settings {
turn_server: None,
min_bitrate: DEFAULT_MIN_BITRATE,
max_bitrate: DEFAULT_MAX_BITRATE,
start_bitrate: DEFAULT_START_BITRATE,
do_fec: DEFAULT_DO_FEC,
do_retransmission: DEFAULT_DO_RETRANSMISSION,
enable_data_channel_navigation: DEFAULT_ENABLE_DATA_CHANNEL_NAVIGATION,
@ -324,13 +328,13 @@ fn make_converter_for_video_caps(caps: &gst::Caps) -> Result<gst::Element, Error
/// Default configuration for known encoders, can be disabled
/// by returning True from an encoder-setup handler.
fn configure_encoder(enc: &gst::Element) {
fn configure_encoder(enc: &gst::Element, start_bitrate: u32) {
if let Some(factory) = enc.factory() {
match factory.name().as_str() {
"vp8enc" | "vp9enc" => {
enc.set_property("deadline", 1i64);
enc.set_property("threads", 12i32);
enc.set_property("target-bitrate", 2560000i32);
enc.set_property("target-bitrate", start_bitrate);
enc.set_property("cpu-used", -16i32);
enc.set_property("keyframe-max-dist", 2000i32);
enc.set_property_from_str("keyframe-mode", "disabled");
@ -344,7 +348,7 @@ fn configure_encoder(enc: &gst::Element) {
enc.set_property("lag-in-frames", 0i32);
}
"x264enc" => {
enc.set_property("bitrate", 2048u32);
enc.set_property("bitrate", start_bitrate / 1000);
enc.set_property_from_str("tune", "zerolatency");
enc.set_property_from_str("speed-preset", "ultrafast");
enc.set_property("threads", 12u32);
@ -353,13 +357,13 @@ fn configure_encoder(enc: &gst::Element) {
enc.set_property("vbv-buf-capacity", 120u32);
}
"nvh264enc" => {
enc.set_property("bitrate", 2048u32);
enc.set_property("bitrate", start_bitrate / 1000);
enc.set_property("gop-size", 2560i32);
enc.set_property_from_str("rc-mode", "cbr-ld-hq");
enc.set_property("zerolatency", true);
}
"vaapih264enc" | "vaapivp8enc" => {
enc.set_property("bitrate", 2048u32);
enc.set_property("bitrate", start_bitrate / 1000);
enc.set_property("keyframe-period", 2560u32);
enc.set_property_from_str("rate-control", "cbr");
}
@ -2474,6 +2478,15 @@ impl ObjectImpl for WebRTCSink {
DEFAULT_MAX_BITRATE,
glib::ParamFlags::READWRITE | gst::PARAM_FLAG_MUTABLE_READY,
),
glib::ParamSpecUInt::new(
"start-bitrate",
"Start Bitrate",
"Start bitrate to use (in bit/sec)",
1,
u32::MAX as u32,
DEFAULT_START_BITRATE,
glib::ParamFlags::READWRITE | gst::PARAM_FLAG_MUTABLE_READY,
),
glib::ParamSpecBoxed::new(
"stats",
"Consumer statistics",
@ -2590,6 +2603,10 @@ impl ObjectImpl for WebRTCSink {
let mut settings = self.settings.lock().unwrap();
settings.max_bitrate = value.get::<u32>().expect("type checked upstream");
}
"start-bitrate" => {
let mut settings = self.settings.lock().unwrap();
settings.start_bitrate = value.get::<u32>().expect("type checked upstream");
}
"do-fec" => {
let mut settings = self.settings.lock().unwrap();
settings.do_fec = value.get::<bool>().expect("type checked upstream");
@ -2643,6 +2660,10 @@ impl ObjectImpl for WebRTCSink {
let settings = self.settings.lock().unwrap();
settings.max_bitrate.to_value()
}
"start-bitrate" => {
let settings = self.settings.lock().unwrap();
settings.start_bitrate.to_value()
}
"do-fec" => {
let settings = self.settings.lock().unwrap();
settings.do_fec.to_value()
@ -2751,7 +2772,7 @@ impl ObjectImpl for WebRTCSink {
)
.accumulator(|_hint, _ret, value| !value.get::<bool>().unwrap())
.class_handler(|_, args| {
let element = args[0].get::<gst::Element>().unwrap();
let element = args[0].get::<super::WebRTCSink>().expect("signal arg");
let enc = args[3].get::<gst::Element>().unwrap();
gst_debug!(
@ -2761,7 +2782,9 @@ impl ObjectImpl for WebRTCSink {
enc
);
configure_encoder(&enc);
let this = element.imp();
let settings = this.settings.lock().unwrap();
configure_encoder(&enc, settings.start_bitrate);
// Return false here so that latter handlers get called
Some(false.to_value())