wgui: video: variable speed control

uidev/assets/gui/video.xml

@@ -1,9 +1,25 @@
 <layout>
+  <theme>
+    <var key="width" value="426.666" />
+    <var key="height" value="133.333" />
+  </theme>
   <elements>
     <rectangle position="absolute" width="10000" height="10000" color="#112233"/>
-    <div margin="16" gap="8" flex_direction="column">
+    <div flex_direction="row">
-      <label text="640x200"/>
+      <div margin="16" gap="8" flex_direction="column" overflow_y="scroll" >
-      <Video src="video.ivf" width="640" height="200"/>
+        <label text="640x200, looping"/>
+        <Video src_builtin="video.ivf" width="~width" height="~height" looping="1"/>
+        <label text="640x200, non-looping "/>
+        <Video src_builtin="video.ivf" width="~width" height="~height" looping="0"/>
+      </div>
+      <div margin="16" gap="8" flex_direction="column" overflow_y="scroll" >
+        <label text="640x200, looping, speed 2x"/>
+        <Video src_builtin="video.ivf" width="~width" height="~height" looping="1" speed="2"/>
+        <label text="640x200, looping, speed 0.5x"/>
+        <Video src_builtin="video.ivf" width="~width" height="~height" looping="1" speed="0.5"/>
+        <label text="640x200, looping, speed 4x"/>
+        <Video src_builtin="video.ivf" width="~width" height="~height" looping="1" speed="4"/>
+      </div>
     </div>
   </elements>
 </layout>

wgui/src/components/video.rs

@@ -29,6 +29,7 @@ pub struct Params<'a> {
 	pub style: taffy::Style,
 	pub src: Option<AssetPath<'a>>,
 	pub looping: bool,
+	pub speed: f32,
 }
 
 struct PlayingSource {
@@ -50,6 +51,7 @@ struct Data {
 	id_image: WidgetID,
 
 	looping: bool,
+	speed: f32,
 }
 
 #[allow(dead_code)]
@@ -104,7 +106,7 @@ impl ComponentVideo {
 
 		state.playing = true;
 
-		let framerate = source.demuxer.framerate;
+		let framerate = source.demuxer.framerate * self.data.speed;
 		let looping = self.data.looping;
 		let id_image = self.data.id_image;
 		let start_time = get_millis();
@@ -248,6 +250,7 @@ pub fn construct(ess: &mut ConstructEssentials, params: Params) -> anyhow::Resul
 		id_container,
 		id_image: image.id,
 		looping: params.looping,
+		speed: params.speed,
 	});
 
 	let state = Rc::new(RefCell::new(State {

wgui/src/parser/component_video.rs

@@ -3,8 +3,8 @@ use crate::{
 	components::{self, Component},
 	layout::WidgetID,
 	parser::{
-		AttribPair, ParserContext, ParserFile, get_asset_path_from_kv, parse_children, parse_i32, process_component,
+		AttribPair, ParserContext, ParserFile, get_asset_path_from_kv, parse_children, parse_f32, parse_i32,
-		style::parse_style,
+		process_component, style::parse_style,
 	},
 };
 
@@ -18,12 +18,16 @@ pub fn parse_component_video<'a>(
 ) -> anyhow::Result<WidgetID> {
 	let mut src: Option<AssetPath> = None;
 	let mut looping: bool = false;
+	let mut speed: f32 = 1.0;
 
 	let style = parse_style(ctx, attribs, tag_name);
 
 	for pair in attribs {
 		let (key, value) = (pair.attrib.as_ref(), pair.value.as_ref());
 		match key {
+			"speed" => {
+				speed = parse_f32(value).unwrap_or(speed);
+			}
 			"looping" => {
 				if let Some(v) = parse_i32(value)
 					&& v != 0
@@ -44,7 +48,12 @@ pub fn parse_component_video<'a>(
 
 	let (widget, video) = components::video::construct(
 		&mut ctx.get_construct_essentials(parent_id),
-		components::video::Params { style, src, looping },
+		components::video::Params {
+			style,
+			src,
+			looping,
+			speed,
+		},
 	)?;
 
 	process_component(ctx, Component(video), widget.id, attribs);