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gtk4: Add scaling-filter and use-scaling-filter properties

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The property is added under the gtk_v4_10 feature because it requires
GTK 4.10.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/-/merge_requests/1309>
This commit is contained in:
Ivan Molodetskikh 2023-08-22 12:44:35 +04:00 committed by Sebastian Dröge
parent 3423d05f77
commit d8a61edca0
1 changed files with 50 additions and 3 deletions
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53
video/gtk4/src/sink/paintable/imp.rs
View file

@ -34,6 +34,9 @@ pub struct Paintable {
cached_textures: RefCell<HashMap<usize, gdk::Texture>>,
gl_context: RefCell<Option<gdk::GLContext>>,
background_color: Cell<gdk::RGBA>,
#[cfg(feature = "gtk_v4_10")]
scaling_filter: Cell<gsk::ScalingFilter>,
use_scaling_filter: Cell<bool>,
#[cfg(not(feature = "gtk_v4_10"))]
premult_shader: gsk::GLShader,
}
@ -45,6 +48,9 @@ impl Default for Paintable {
cached_textures: Default::default(),
gl_context: Default::default(),
background_color: Cell::new(gdk::RGBA::BLACK),
#[cfg(feature = "gtk_v4_10")]
scaling_filter: Cell::new(gsk::ScalingFilter::Linear),
use_scaling_filter: Cell::new(false),
#[cfg(not(feature = "gtk_v4_10"))]
premult_shader: gsk::GLShader::from_bytes(&glib::Bytes::from_static(include_bytes!(
"premult.glsl"
@ -74,6 +80,20 @@ impl ObjectImpl for Paintable {
.blurb("Background color to render behind the video frame and in the borders")
.default_value(0)
.build(),
#[cfg(feature = "gtk_v4_10")]
glib::ParamSpecEnum::builder_with_default::<gsk::ScalingFilter>(
"scaling-filter",
gsk::ScalingFilter::Linear,
)
.nick("Scaling Filter")
.blurb("Scaling filter to use for rendering")
.build(),
#[cfg(feature = "gtk_v4_10")]
glib::ParamSpecBoolean::builder("use-scaling-filter")
.nick("Use Scaling Filter")
.blurb("Use selected scaling filter or GTK default for rendering")
.default_value(false)
.build(),
]
});
@ -93,6 +113,10 @@ impl ObjectImpl for Paintable {
v.to_value()
}
#[cfg(feature = "gtk_v4_10")]
"scaling-filter" => self.scaling_filter.get().to_value(),
#[cfg(feature = "gtk_v4_10")]
"use-scaling-filter" => self.use_scaling_filter.get().to_value(),
_ => unimplemented!(),
}
}
@ -111,6 +135,10 @@ impl ObjectImpl for Paintable {
self.background_color
.set(gdk::RGBA::new(red, green, blue, alpha))
}
#[cfg(feature = "gtk_v4_10")]
"scaling-filter" => self.scaling_filter.set(value.get().unwrap()),
#[cfg(feature = "gtk_v4_10")]
"use-scaling-filter" => self.use_scaling_filter.set(value.get().unwrap()),
_ => unimplemented!(),
}
}
@ -224,7 +252,16 @@ impl PaintableImpl for Paintable {
context_requires_premult && texture.is::<gdk::GLTexture>() && *has_alpha;
if do_premult {
snapshot.push_mask(gsk::MaskMode::Alpha);
snapshot.append_texture(texture, &bounds);
if self.use_scaling_filter.get() {
#[cfg(feature = "gtk_v4_10")]
snapshot.append_scaled_texture(
texture,
self.scaling_filter.get(),
&bounds,
);
} else {
snapshot.append_texture(texture, &bounds);
}
snapshot.pop(); // pop mask
// color matrix to set alpha of the source to 1.0 as it was
@ -242,7 +279,12 @@ impl PaintableImpl for Paintable {
);
}
snapshot.append_texture(texture, &bounds);
if self.use_scaling_filter.get() {
#[cfg(feature = "gtk_v4_10")]
snapshot.append_scaled_texture(texture, self.scaling_filter.get(), &bounds);
} else {
snapshot.append_texture(texture, &bounds);
}
if do_premult {
snapshot.pop(); // pop color matrix
@ -261,7 +303,12 @@ impl PaintableImpl for Paintable {
);
}
snapshot.append_texture(texture, &bounds);
if self.use_scaling_filter.get() {
#[cfg(feature = "gtk_v4_10")]
snapshot.append_scaled_texture(texture, self.scaling_filter.get(), &bounds);
} else {
snapshot.append_texture(texture, &bounds);
}
if do_premult {
snapshot.gl_shader_pop_texture(); // pop texture appended above from the shader