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Allow custom pipelines, autodetect live sources

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Vladimir Romashchenko 2024-08-05 17:55:50 -04:00
parent 217fa7730a
commit be21d2a19b
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5 changed files with 93 additions and 79 deletions
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@ -50,7 +50,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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@ -162,9 +162,9 @@ checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
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@ -214,7 +214,7 @@ checksum = "965ab7eb5f8f97d2a083c799f3a1b994fc397b2fe2da5d1da1626ce15a39f2b1"
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[[package]] [[package]]
@ -235,7 +235,7 @@ version = "0.12.4"
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@ -542,7 +542,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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@ -589,7 +589,7 @@ version = "0.11.1"
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@ -781,7 +781,7 @@ checksum = "1a5c6c585bc94aaf2c7b51dd4c2ba22680844aba4c687be581871a6f518c5742"
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@ -856,7 +856,7 @@ checksum = "87750cf4b7a4c0625b1529e4c543c2182106e4dedc60a2a6455e00d212c489ac"
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@ -982,7 +982,7 @@ dependencies = [
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@ -1055,7 +1055,7 @@ version = "0.3.0"
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@ -1088,7 +1088,7 @@ version = "0.1.2"
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@ -1219,7 +1219,7 @@ version = "0.11.0"
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@ -1278,7 +1278,7 @@ version = "0.12.0"
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@ -1424,6 +1424,7 @@ dependencies = [
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@ -1730,9 +1731,9 @@ dependencies = [
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@ -1758,7 +1759,7 @@ version = "0.27.0"
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@ -1815,7 +1816,7 @@ version = "0.8.0"
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@ -1896,7 +1897,7 @@ dependencies = [
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@ -2037,7 +2038,7 @@ checksum = "e05d1c929301fee6830dafa764341118829b2535c216b0571e3821ecac5c885b"
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@ -2130,7 +2131,7 @@ dependencies = [
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@ -2204,9 +2205,9 @@ dependencies = [
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@ -2357,7 +2358,7 @@ version = "0.38.31"
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@ -2438,7 +2439,7 @@ checksum = "33c85360c95e7d137454dc81d9a4ed2b8efd8fbe19cee57357b32b9771fccb67"
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@ -2825,7 +2826,7 @@ checksum = "34704c8d6ebcbc939824180af020566b01a7c01f80641264eba0999f6c2b6be7"
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@ -2988,7 +2989,7 @@ dependencies = [
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@ -3022,7 +3023,7 @@ checksum = "642f325be6301eb8107a83d12a8ac6c1e1c54345a7ef1a9261962dfefda09e66"
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"wayland-protocols", "wayland-protocols",
@ -3216,7 +3217,7 @@ checksum = "6b15e451d4060ada0d99a64df44e4d590213496da7c4f245572d51071e8e30ed"
dependencies = [ dependencies = [
"arrayvec", "arrayvec",
"bit-vec", "bit-vec",
"bitflags 2.4.2", "bitflags 2.6.0",
"cfg_aliases 0.1.1", "cfg_aliases 0.1.1",
"codespan-reporting", "codespan-reporting",
"indexmap", "indexmap",
@ -3244,7 +3245,7 @@ dependencies = [
"arrayvec", "arrayvec",
"ash", "ash",
"bit-set", "bit-set",
"bitflags 2.4.2", "bitflags 2.6.0",
"block", "block",
"cfg_aliases 0.1.1", "cfg_aliases 0.1.1",
"core-graphics-types", "core-graphics-types",
@ -3284,7 +3285,7 @@ version = "0.19.0"
source = "registry+https://github.com/rust-lang/crates.io-index" source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "895fcbeb772bfb049eb80b2d6e47f6c9af235284e9703c96fc0218a42ffd5af2" checksum = "895fcbeb772bfb049eb80b2d6e47f6c9af235284e9703c96fc0218a42ffd5af2"
dependencies = [ dependencies = [
"bitflags 2.4.2", "bitflags 2.6.0",
"js-sys", "js-sys",
"web-sys", "web-sys",
] ]
@ -3566,7 +3567,7 @@ dependencies = [
"ahash", "ahash",
"android-activity", "android-activity",
"atomic-waker", "atomic-waker",
"bitflags 2.4.2", "bitflags 2.6.0",
"bytemuck", "bytemuck",
"calloop", "calloop",
"cfg_aliases 0.1.1", "cfg_aliases 0.1.1",
@ -3667,7 +3668,7 @@ version = "0.4.2"
source = "registry+https://github.com/rust-lang/crates.io-index" source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "d039de8032a9a8856a6be89cea3e5d12fdd82306ab7c94d74e6deab2460651c5" checksum = "d039de8032a9a8856a6be89cea3e5d12fdd82306ab7c94d74e6deab2460651c5"
dependencies = [ dependencies = [
"bitflags 2.4.2", "bitflags 2.6.0",
"dlib", "dlib",
"log", "log",
"once_cell", "once_cell",
@ -3721,7 +3722,7 @@ checksum = "9ce1b18ccd8e73a9321186f97e46f9f04b778851177567b1975109d26a08d2a6"
dependencies = [ dependencies = [
"proc-macro2", "proc-macro2",
"quote", "quote",
"syn 2.0.49", "syn 2.0.72",
] ]
[[package]] [[package]]

1
Cargo.toml
View file

@ -21,6 +21,7 @@ iced_native = "0.10"
iced_wgpu = "0.12" iced_wgpu = "0.12"
gstreamer = "0.22" gstreamer = "0.22"
gstreamer-app = "0.22" # appsink gstreamer-app = "0.22" # appsink
gstreamer-base = "0.22" # basesrc
glib = "0.19" # gobject traits and error type glib = "0.19" # gobject traits and error type
thiserror = "1" thiserror = "1"
url = "2" # media uri url = "2" # media uri

1
examples/minimal.rs
View file

@ -39,7 +39,6 @@ impl Sandbox for App {
.unwrap(), .unwrap(),
) )
.unwrap(), .unwrap(),
false,
) )
.unwrap(); .unwrap();
App { App {

2
src/lib.rs
View file

@ -60,6 +60,8 @@ pub enum Error {
Bool(#[from] glib::BoolError), Bool(#[from] glib::BoolError),
#[error("failed to get the gstreamer bus")] #[error("failed to get the gstreamer bus")]
Bus, Bus,
#[error("failed to get AppSink element with name='{0}' from gstreamer pipeline")]
AppSink(String),
#[error("{0}")] #[error("{0}")]
StateChange(#[from] gst::StateChangeError), StateChange(#[from] gst::StateChangeError),
#[error("failed to cast gstreamer element")] #[error("failed to cast gstreamer element")]

63
src/video.rs
View file

@ -1,7 +1,9 @@
use crate::Error; use crate::Error;
use gst::prelude::*; use gst::prelude::*;
use gst_base::prelude::*;
use gstreamer as gst; use gstreamer as gst;
use gstreamer_app as gst_app; use gstreamer_app as gst_app;
use gstreamer_base as gst_base;
use iced::widget::image as img; use iced::widget::image as img;
use std::cell::RefCell; use std::cell::RefCell;
use std::sync::atomic::{AtomicBool, AtomicU64, Ordering}; use std::sync::atomic::{AtomicBool, AtomicU64, Ordering};
@ -44,7 +46,7 @@ pub(crate) struct Internal {
pub(crate) id: u64, pub(crate) id: u64,
pub(crate) bus: gst::Bus, pub(crate) bus: gst::Bus,
pub(crate) source: gst::Bin, pub(crate) source: gst::Pipeline,
pub(crate) width: i32, pub(crate) width: i32,
pub(crate) height: i32, pub(crate) height: i32,
@ -110,35 +112,45 @@ impl Drop for Video {
impl Video { impl Video {
/// Create a new video player from a given video which loads from `uri`. /// Create a new video player from a given video which loads from `uri`.
/// /// Note that live sourced will report the duration to be zero.
/// If `live` is set then no duration is queried (as this will result in an error and is non-sensical for live streams). pub fn new(uri: &url::Url) -> Result<Self, Error> {
/// Set `live` if the streaming source is indefinite (e.g. a live stream). let pipeline = format!("uridecodebin uri=\"{}\" ! videoconvert ! videoscale ! appsink name=iced_video caps=video/x-raw,format=RGBA,pixel-aspect-ratio=1/1", uri.as_str());
/// Note that this will cause the duration to be zero. Self::from_pipeline(pipeline)
pub fn new(uri: &url::Url, live: bool) -> Result<Self, Error> { }
pub fn from_pipeline<S: AsRef<str>>(pipeline: S) -> Result<Self, Error> {
static NEXT_ID: AtomicU64 = AtomicU64::new(0); static NEXT_ID: AtomicU64 = AtomicU64::new(0);
let id = NEXT_ID.fetch_add(1, Ordering::SeqCst); let id = NEXT_ID.fetch_add(1, Ordering::SeqCst);
gst::init()?; gst::init()?;
let source = gst::parse::launch(&format!("playbin uri=\"{}\" video-sink=\"videoconvert ! videoscale ! appsink name=app_sink caps=video/x-raw,format=RGBA,pixel-aspect-ratio=1/1\"", uri.as_str()))?; let pipeline = gst::parse::launch(pipeline.as_ref())?
let source = source.downcast::<gst::Bin>().unwrap(); .downcast::<gst::Pipeline>()
.map_err(|_| Error::Cast)?;
let video_sink: gst::Element = source.property("video-sink"); let mut live = false;
let pad = video_sink.pads().get(0).cloned().unwrap(); pipeline
let pad = pad.dynamic_cast::<gst::GhostPad>().unwrap(); .iterate_sources()
let bin = pad .foreach(|elem| {
.parent_element() if let Ok(src) = elem.downcast::<gst_base::BaseSrc>() {
.unwrap() if src.is_live() {
.downcast::<gst::Bin>() live = true;
}
}
})
.unwrap(); .unwrap();
let app_sink = bin.by_name("app_sink").unwrap(); let app_sink_name = "iced_video";
let app_sink = app_sink.downcast::<gst_app::AppSink>().unwrap(); let app_sink = pipeline
.by_name(app_sink_name)
.and_then(|elem| elem.downcast::<gst_app::AppSink>().ok())
.ok_or(Error::AppSink(app_sink_name.to_string()))?;
source.set_state(gst::State::Playing)?; let pad = app_sink.pads().first().cloned().unwrap();
pipeline.set_state(gst::State::Playing)?;
// wait for up to 5 seconds until the decoder gets the source capabilities // wait for up to 5 seconds until the decoder gets the source capabilities
source.state(gst::ClockTime::from_seconds(5)).0?; pipeline.state(gst::ClockTime::from_seconds(5)).0?;
// extract resolution and framerate // extract resolution and framerate
// TODO(jazzfool): maybe we want to extract some other information too? // TODO(jazzfool): maybe we want to extract some other information too?
@ -152,7 +164,7 @@ impl Video {
let duration = if !live { let duration = if !live {
std::time::Duration::from_nanos( std::time::Duration::from_nanos(
source pipeline
.query_duration::<gst::ClockTime>() .query_duration::<gst::ClockTime>()
.ok_or(Error::Duration)? .ok_or(Error::Duration)?
.nseconds(), .nseconds(),
@ -194,8 +206,8 @@ impl Video {
Ok(Video(RefCell::new(Internal { Ok(Video(RefCell::new(Internal {
id, id,
bus: source.bus().unwrap(), bus: pipeline.bus().unwrap(),
source, source: pipeline,
width, width,
height, height,
@ -231,14 +243,14 @@ impl Video {
/// ///
/// This uses a linear scale, for example `0.5` is perceived as half as loud. /// This uses a linear scale, for example `0.5` is perceived as half as loud.
pub fn set_volume(&mut self, volume: f64) { pub fn set_volume(&mut self, volume: f64) {
self.0.borrow().source.set_property("volume", &volume); self.0.borrow().source.set_property("volume", volume);
} }
/// Set if the audio is muted or not, without changing the volume. /// Set if the audio is muted or not, without changing the volume.
pub fn set_muted(&mut self, muted: bool) { pub fn set_muted(&mut self, muted: bool) {
let mut inner = self.0.borrow_mut(); let mut inner = self.0.borrow_mut();
inner.muted = muted; inner.muted = muted;
inner.source.set_property("mute", &muted); inner.source.set_property("mute", muted);
} }
/// Get if the audio is muted or not. /// Get if the audio is muted or not.
@ -292,7 +304,6 @@ impl Video {
.query_position::<gst::ClockTime>() .query_position::<gst::ClockTime>()
.map_or(0, |pos| pos.nseconds()), .map_or(0, |pos| pos.nseconds()),
) )
.into()
} }
/// Get the media duration. /// Get the media duration.