Sebastian Dröge · Guillaume Desmottes · Sebastian Dröge · Guillaume Desmottes · Sebastian Dröge · Sebastian Dröge
--- a/gstreamer-app/CHANGELOG.md
+++ b/gstreamer-app/CHANGELOG.md
@@ -5,6 +5,32 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html),
 specifically the [variant used by Rust](http://doc.crates.io/manifest.html#the-version-field).

+## [0.15.6] - 2020-05-28
+### Fixed
+- Assert that the data passed to `VideoCaptionMeta::add()` is not empty.
+- Don't store strong references to the object in the bus, appsink and appsrc
+  futures `Stream` / `Sink` adapters. This would keep them alive unnecessarily
+  and would prevent the `Stream` / `Sink` to ever "finish" on its own.
+- Handle receiving a `None` reply in the change function of `gst::Promise`.
+  This is apparently valid. For backwards compatibility reasons this is
+  currently replaced with an empty structure but in 0.16 the API will
+  explicitly handle `None`.
+
+### Added
+- `gst::Stream::debug()` and `gst::StreamCollection::debug()` for converting
+  into a structured string with the actual contents of each.
+- `gst::Structure::from_iter()` and `gst::Caps::from_iter()` to create
+  structures/caps from iterators.
+- `gst::Event` support for getting/setting the `gst::Stream` in the
+  `StreamStart` event.
+- `gst_video::calculate_display_ratio()` and `::guess_framerate()`.
+- Various video related `gst::CapsFeatures` in `gst_video`.
+- `TryFrom`/`From` impls for converting between `gst::Structure` and
+  `gst_video::VideoConverterConfig`.
+- Various `glib::Value` trait impls for `SDPMessage`, `StructureRef`,
+  `CapsFeatureRef` and all borrowed variants of miniobjects to be able to
+  work with the borrowed, non-owned variants when handling `glib::Value`s.
+
 ## [0.15.5] - 2020-05-03
 ### Fixed
 - Revert: Allow logging any `glib::Object` and not just `gst::Object`. This
@@ -705,7 +731,8 @@ specifically the [variant used by Rust](http://doc.crates.io/manifest.html#the-v
  (< 0.8.0) of the bindings can be found [here](https://github.com/arturoc/gstreamer1.0-rs).
  The API of the two is incompatible.

-[Unreleased]: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/compare/0.15.5...HEAD
+[Unreleased]: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/compare/0.15.6...HEAD
+[0.15.6]: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/compare/0.15.5...0.15.6
 [0.15.5]: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/compare/0.15.4...0.15.5
 [0.15.4]: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/compare/0.15.3...0.15.4
 [0.15.3]: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/compare/0.15.2...0.15.3

--- a/gstreamer-app/Cargo.toml
+++ b/gstreamer-app/Cargo.toml
 [package]
 name = "gstreamer-app"
-version = "0.15.5"
+version = "0.15.6"
 authors = ["Sebastian Dröge <sebastian@centricular.com>"]
 categories = ["api-bindings", "multimedia"]
 description = "Rust bindings for GStreamer App library"

--- a/gstreamer-app/src/app_sink.rs
+++ b/gstreamer-app/src/app_sink.rs
@@ -26,6 +26,7 @@ use AppSink;
 #[cfg(any(feature = "v1_10"))]
 use {
    futures_core::Stream,
+    glib::prelude::*,
    std::{
        pin::Pin,
        sync::{Arc, Mutex},
@@ -349,7 +350,7 @@ unsafe extern "C" fn new_preroll_trampoline<
 #[cfg(any(feature = "v1_10"))]
 #[derive(Debug)]
 pub struct AppSinkStream {
-    app_sink: AppSink,
+    app_sink: glib::WeakRef<AppSink>,
    waker_reference: Arc<Mutex<Option<Waker>>>,
 }

@@ -358,7 +359,6 @@ impl AppSinkStream {
    fn new(app_sink: &AppSink) -> Self {
        skip_assert_initialized!();

-        let app_sink = app_sink.clone();
        let waker_reference = Arc::new(Mutex::new(None as Option<Waker>));

        app_sink.set_callbacks(
@@ -387,7 +387,7 @@ impl AppSinkStream {
        );

        Self {
-            app_sink,
+            app_sink: app_sink.downgrade(),
            waker_reference,
        }
    }
@@ -399,7 +399,9 @@ impl Drop for AppSinkStream {
        // This is not thread-safe before 1.16.3, see
        // https://gitlab.freedesktop.org/gstreamer/gst-plugins-base/merge_requests/570
        if gst::version() >= (1, 16, 3, 0) {
-            self.app_sink.set_callbacks(AppSinkCallbacks::new().build());
+            if let Some(app_sink) = self.app_sink.upgrade() {
+                app_sink.set_callbacks(AppSinkCallbacks::new().build());
+            }
        }
    }
 }
@@ -411,11 +413,16 @@ impl Stream for AppSinkStream {
    fn poll_next(self: Pin<&mut Self>, context: &mut Context) -> Poll<Option<Self::Item>> {
        let mut waker = self.waker_reference.lock().unwrap();

-        self.app_sink
+        let app_sink = match self.app_sink.upgrade() {
+            Some(app_sink) => app_sink,
+            None => return Poll::Ready(None),
+        };
+
+        app_sink
            .try_pull_sample(gst::ClockTime::from_mseconds(0))
            .map(|sample| Poll::Ready(Some(sample)))
            .unwrap_or_else(|| {
-                if self.app_sink.is_eos() {
+                if app_sink.is_eos() {
                    return Poll::Ready(None);
                }


--- a/gstreamer-app/src/app_src.rs
+++ b/gstreamer-app/src/app_src.rs
@@ -7,6 +7,7 @@
 // except according to those terms.

 use futures_sink::Sink;
+use glib::prelude::*;
 use glib::translate::*;
 use glib_sys::{gboolean, gpointer};
 use gst;
@@ -324,7 +325,7 @@ impl AppSrc {

 #[derive(Debug)]
 pub struct AppSrcSink {
-    app_src: AppSrc,
+    app_src: glib::WeakRef<AppSrc>,
    waker_reference: Arc<Mutex<Option<Waker>>>,
 }

@@ -332,7 +333,6 @@ impl AppSrcSink {
    fn new(app_src: &AppSrc) -> Self {
        skip_assert_initialized!();

-        let app_src = app_src.clone();
        let waker_reference = Arc::new(Mutex::new(None as Option<Waker>));

        app_src.set_callbacks(
@@ -350,7 +350,7 @@ impl AppSrcSink {
        );

        Self {
-            app_src,
+            app_src: app_src.downgrade(),
            waker_reference,
        }
    }
@@ -361,7 +361,9 @@ impl Drop for AppSrcSink {
        // This is not thread-safe before 1.16.3, see
        // https://gitlab.freedesktop.org/gstreamer/gst-plugins-base/merge_requests/570
        if gst::version() >= (1, 16, 3, 0) {
-            self.app_src.set_callbacks(AppSrcCallbacks::new().build());
+            if let Some(app_src) = self.app_src.upgrade() {
+                app_src.set_callbacks(AppSrcCallbacks::new().build());
+            }
        }
    }
 }
@@ -372,8 +374,13 @@ impl Sink<gst::Sample> for AppSrcSink {
    fn poll_ready(self: Pin<&mut Self>, context: &mut Context) -> Poll<Result<(), Self::Error>> {
        let mut waker = self.waker_reference.lock().unwrap();

-        let current_level_bytes = self.app_src.get_current_level_bytes();
-        let max_bytes = self.app_src.get_max_bytes();
+        let app_src = match self.app_src.upgrade() {
+            Some(app_src) => app_src,
+            None => return Poll::Ready(Err(gst::FlowError::Eos)),
+        };
+
+        let current_level_bytes = app_src.get_current_level_bytes();
+        let max_bytes = app_src.get_max_bytes();

        if current_level_bytes >= max_bytes && max_bytes != 0 {
            waker.replace(context.waker().to_owned());
@@ -385,7 +392,12 @@ impl Sink<gst::Sample> for AppSrcSink {
    }

    fn start_send(self: Pin<&mut Self>, sample: gst::Sample) -> Result<(), Self::Error> {
-        self.app_src.push_sample(&sample)?;
+        let app_src = match self.app_src.upgrade() {
+            Some(app_src) => app_src,
+            None => return Err(gst::FlowError::Eos),
+        };
+
+        app_src.push_sample(&sample)?;

        Ok(())
    }
@@ -395,7 +407,12 @@ impl Sink<gst::Sample> for AppSrcSink {
    }

    fn poll_close(self: Pin<&mut Self>, _: &mut Context) -> Poll<Result<(), Self::Error>> {
-        self.app_src.end_of_stream()?;
+        let app_src = match self.app_src.upgrade() {
+            Some(app_src) => app_src,
+            None => return Poll::Ready(Ok(())),
+        };
+
+        app_src.end_of_stream()?;

        Poll::Ready(Ok(()))
    }

--- a/gstreamer-audio/CHANGELOG.md
+++ b/gstreamer-audio/CHANGELOG.md
@@ -5,6 +5,32 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html),
 specifically the [variant used by Rust](http://doc.crates.io/manifest.html#the-version-field).

+## [0.15.6] - 2020-05-28
+### Fixed
+- Assert that the data passed to `VideoCaptionMeta::add()` is not empty.
+- Don't store strong references to the object in the bus, appsink and appsrc
+  futures `Stream` / `Sink` adapters. This would keep them alive unnecessarily
+  and would prevent the `Stream` / `Sink` to ever "finish" on its own.
+- Handle receiving a `None` reply in the change function of `gst::Promise`.
+  This is apparently valid. For backwards compatibility reasons this is
+  currently replaced with an empty structure but in 0.16 the API will
+  explicitly handle `None`.
+
+### Added
+- `gst::Stream::debug()` and `gst::StreamCollection::debug()` for converting
+  into a structured string with the actual contents of each.
+- `gst::Structure::from_iter()` and `gst::Caps::from_iter()` to create
+  structures/caps from iterators.
+- `gst::Event` support for getting/setting the `gst::Stream` in the
+  `StreamStart` event.
+- `gst_video::calculate_display_ratio()` and `::guess_framerate()`.
+- Various video related `gst::CapsFeatures` in `gst_video`.
+- `TryFrom`/`From` impls for converting between `gst::Structure` and
+  `gst_video::VideoConverterConfig`.
+- Various `glib::Value` trait impls for `SDPMessage`, `StructureRef`,
+  `CapsFeatureRef` and all borrowed variants of miniobjects to be able to
+  work with the borrowed, non-owned variants when handling `glib::Value`s.
+
 ## [0.15.5] - 2020-05-03
 ### Fixed
 - Revert: Allow logging any `glib::Object` and not just `gst::Object`. This
@@ -705,7 +731,8 @@ specifically the [variant used by Rust](http://doc.crates.io/manifest.html#the-v
  (< 0.8.0) of the bindings can be found [here](https://github.com/arturoc/gstreamer1.0-rs).
  The API of the two is incompatible.

-[Unreleased]: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/compare/0.15.5...HEAD
+[Unreleased]: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/compare/0.15.6...HEAD
+[0.15.6]: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/compare/0.15.5...0.15.6
 [0.15.5]: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/compare/0.15.4...0.15.5
 [0.15.4]: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/compare/0.15.3...0.15.4
 [0.15.3]: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/compare/0.15.2...0.15.3

--- a/gstreamer-audio/Cargo.toml
+++ b/gstreamer-audio/Cargo.toml
 [package]
 name = "gstreamer-audio"
-version = "0.15.5"
+version = "0.15.6"
 authors = ["Sebastian Dröge <sebastian@centricular.com>"]
 categories = ["api-bindings", "multimedia"]
 description = "Rust bindings for GStreamer Audio library"

--- a/gstreamer-base/CHANGELOG.md
+++ b/gstreamer-base/CHANGELOG.md
@@ -5,6 +5,32 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html),
 specifically the [variant used by Rust](http://doc.crates.io/manifest.html#the-version-field).

+## [0.15.6] - 2020-05-28
+### Fixed
+- Assert that the data passed to `VideoCaptionMeta::add()` is not empty.
+- Don't store strong references to the object in the bus, appsink and appsrc
+  futures `Stream` / `Sink` adapters. This would keep them alive unnecessarily
+  and would prevent the `Stream` / `Sink` to ever "finish" on its own.
+- Handle receiving a `None` reply in the change function of `gst::Promise`.
+  This is apparently valid. For backwards compatibility reasons this is
+  currently replaced with an empty structure but in 0.16 the API will
+  explicitly handle `None`.
+
+### Added
+- `gst::Stream::debug()` and `gst::StreamCollection::debug()` for converting
+  into a structured string with the actual contents of each.
+- `gst::Structure::from_iter()` and `gst::Caps::from_iter()` to create
+  structures/caps from iterators.
+- `gst::Event` support for getting/setting the `gst::Stream` in the
+  `StreamStart` event.
+- `gst_video::calculate_display_ratio()` and `::guess_framerate()`.
+- Various video related `gst::CapsFeatures` in `gst_video`.
+- `TryFrom`/`From` impls for converting between `gst::Structure` and
+  `gst_video::VideoConverterConfig`.
+- Various `glib::Value` trait impls for `SDPMessage`, `StructureRef`,
+  `CapsFeatureRef` and all borrowed variants of miniobjects to be able to
+  work with the borrowed, non-owned variants when handling `glib::Value`s.
+
 ## [0.15.5] - 2020-05-03
 ### Fixed
 - Revert: Allow logging any `glib::Object` and not just `gst::Object`. This
@@ -705,7 +731,8 @@ specifically the [variant used by Rust](http://doc.crates.io/manifest.html#the-v
  (< 0.8.0) of the bindings can be found [here](https://github.com/arturoc/gstreamer1.0-rs).
  The API of the two is incompatible.

-[Unreleased]: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/compare/0.15.5...HEAD
+[Unreleased]: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/compare/0.15.6...HEAD
+[0.15.6]: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/compare/0.15.5...0.15.6
 [0.15.5]: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/compare/0.15.4...0.15.5
 [0.15.4]: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/compare/0.15.3...0.15.4
 [0.15.3]: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/compare/0.15.2...0.15.3

--- a/gstreamer-base/Cargo.toml
+++ b/gstreamer-base/Cargo.toml
 [package]
 name = "gstreamer-base"
-version = "0.15.5"
+version = "0.15.6"
 authors = ["Sebastian Dröge <sebastian@centricular.com>"]
 categories = ["api-bindings", "multimedia"]
 description = "Rust bindings for GStreamer Base library"

--- a/gstreamer-check/CHANGELOG.md
+++ b/gstreamer-check/CHANGELOG.md
@@ -5,6 +5,32 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html),
 specifically the [variant used by Rust](http://doc.crates.io/manifest.html#the-version-field).

+## [0.15.6] - 2020-05-28
+### Fixed
+- Assert that the data passed to `VideoCaptionMeta::add()` is not empty.
+- Don't store strong references to the object in the bus, appsink and appsrc
+  futures `Stream` / `Sink` adapters. This would keep them alive unnecessarily
+  and would prevent the `Stream` / `Sink` to ever "finish" on its own.
+- Handle receiving a `None` reply in the change function of `gst::Promise`.
+  This is apparently valid. For backwards compatibility reasons this is
+  currently replaced with an empty structure but in 0.16 the API will
+  explicitly handle `None`.
+
+### Added
+- `gst::Stream::debug()` and `gst::StreamCollection::debug()` for converting
+  into a structured string with the actual contents of each.
+- `gst::Structure::from_iter()` and `gst::Caps::from_iter()` to create
+  structures/caps from iterators.
+- `gst::Event` support for getting/setting the `gst::Stream` in the
+  `StreamStart` event.
+- `gst_video::calculate_display_ratio()` and `::guess_framerate()`.
+- Various video related `gst::CapsFeatures` in `gst_video`.
+- `TryFrom`/`From` impls for converting between `gst::Structure` and
+  `gst_video::VideoConverterConfig`.
+- Various `glib::Value` trait impls for `SDPMessage`, `StructureRef`,
+  `CapsFeatureRef` and all borrowed variants of miniobjects to be able to
+  work with the borrowed, non-owned variants when handling `glib::Value`s.
+
 ## [0.15.5] - 2020-05-03
 ### Fixed
 - Revert: Allow logging any `glib::Object` and not just `gst::Object`. This
@@ -705,7 +731,8 @@ specifically the [variant used by Rust](http://doc.crates.io/manifest.html#the-v
  (< 0.8.0) of the bindings can be found [here](https://github.com/arturoc/gstreamer1.0-rs).
  The API of the two is incompatible.

-[Unreleased]: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/compare/0.15.5...HEAD
+[Unreleased]: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/compare/0.15.6...HEAD
+[0.15.6]: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/compare/0.15.5...0.15.6
 [0.15.5]: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/compare/0.15.4...0.15.5
 [0.15.4]: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/compare/0.15.3...0.15.4
 [0.15.3]: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/compare/0.15.2...0.15.3

--- a/gstreamer-check/Cargo.toml
+++ b/gstreamer-check/Cargo.toml
 [package]
 name = "gstreamer-check"
-version = "0.15.5"
+version = "0.15.6"
 authors = ["Sebastian Dröge <sebastian@centricular.com>"]
 categories = ["api-bindings", "multimedia"]
 description = "Rust bindings for GStreamer Check library"

--- a/gstreamer-editing-services/CHANGELOG.md
+++ b/gstreamer-editing-services/CHANGELOG.md
@@ -5,6 +5,32 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html),
 specifically the [variant used by Rust](http://doc.crates.io/manifest.html#the-version-field).

+## [0.15.6] - 2020-05-28
+### Fixed
+- Assert that the data passed to `VideoCaptionMeta::add()` is not empty.
+- Don't store strong references to the object in the bus, appsink and appsrc
+  futures `Stream` / `Sink` adapters. This would keep them alive unnecessarily
+  and would prevent the `Stream` / `Sink` to ever "finish" on its own.
+- Handle receiving a `None` reply in the change function of `gst::Promise`.
+  This is apparently valid. For backwards compatibility reasons this is
+  currently replaced with an empty structure but in 0.16 the API will
+  explicitly handle `None`.
+
+### Added
+- `gst::Stream::debug()` and `gst::StreamCollection::debug()` for converting
+  into a structured string with the actual contents of each.
+- `gst::Structure::from_iter()` and `gst::Caps::from_iter()` to create
+  structures/caps from iterators.
+- `gst::Event` support for getting/setting the `gst::Stream` in the
+  `StreamStart` event.
+- `gst_video::calculate_display_ratio()` and `::guess_framerate()`.
+- Various video related `gst::CapsFeatures` in `gst_video`.
+- `TryFrom`/`From` impls for converting between `gst::Structure` and
+  `gst_video::VideoConverterConfig`.
+- Various `glib::Value` trait impls for `SDPMessage`, `StructureRef`,
+  `CapsFeatureRef` and all borrowed variants of miniobjects to be able to
+  work with the borrowed, non-owned variants when handling `glib::Value`s.
+
 ## [0.15.5] - 2020-05-03
 ### Fixed
 - Revert: Allow logging any `glib::Object` and not just `gst::Object`. This
@@ -705,7 +731,8 @@ specifically the [variant used by Rust](http://doc.crates.io/manifest.html#the-v
  (< 0.8.0) of the bindings can be found [here](https://github.com/arturoc/gstreamer1.0-rs).
  The API of the two is incompatible.

-[Unreleased]: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/compare/0.15.5...HEAD
+[Unreleased]: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/compare/0.15.6...HEAD
+[0.15.6]: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/compare/0.15.5...0.15.6
 [0.15.5]: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/compare/0.15.4...0.15.5
 [0.15.4]: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/compare/0.15.3...0.15.4
 [0.15.3]: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/compare/0.15.2...0.15.3

--- a/gstreamer-editing-services/Cargo.toml
+++ b/gstreamer-editing-services/Cargo.toml
 [package]
 name = "gstreamer-editing-services"
-version = "0.15.5"
+version = "0.15.6"
 authors = ["Thibault Saunier <tsaunier@igalia.com>", "Sebastian Dröge <sebastian@centricular.com>"]
 categories = ["api-bindings", "multimedia"]
 description = "Rust bindings for GStreamer Editing Services"

--- a/gstreamer-gl/CHANGELOG.md
+++ b/gstreamer-gl/CHANGELOG.md
@@ -5,6 +5,32 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html),
 specifically the [variant used by Rust](http://doc.crates.io/manifest.html#the-version-field).

+## [0.15.6] - 2020-05-28
+### Fixed
+- Assert that the data passed to `VideoCaptionMeta::add()` is not empty.
+- Don't store strong references to the object in the bus, appsink and appsrc
+  futures `Stream` / `Sink` adapters. This would keep them alive unnecessarily
+  and would prevent the `Stream` / `Sink` to ever "finish" on its own.
+- Handle receiving a `None` reply in the change function of `gst::Promise`.
+  This is apparently valid. For backwards compatibility reasons this is
+  currently replaced with an empty structure but in 0.16 the API will
+  explicitly handle `None`.
+
+### Added
+- `gst::Stream::debug()` and `gst::StreamCollection::debug()` for converting
+  into a structured string with the actual contents of each.
+- `gst::Structure::from_iter()` and `gst::Caps::from_iter()` to create
+  structures/caps from iterators.
+- `gst::Event` support for getting/setting the `gst::Stream` in the
+  `StreamStart` event.
+- `gst_video::calculate_display_ratio()` and `::guess_framerate()`.
+- Various video related `gst::CapsFeatures` in `gst_video`.
+- `TryFrom`/`From` impls for converting between `gst::Structure` and
+  `gst_video::VideoConverterConfig`.
+- Various `glib::Value` trait impls for `SDPMessage`, `StructureRef`,
+  `CapsFeatureRef` and all borrowed variants of miniobjects to be able to
+  work with the borrowed, non-owned variants when handling `glib::Value`s.
+
 ## [0.15.5] - 2020-05-03
 ### Fixed
 - Revert: Allow logging any `glib::Object` and not just `gst::Object`. This
@@ -705,7 +731,8 @@ specifically the [variant used by Rust](http://doc.crates.io/manifest.html#the-v
  (< 0.8.0) of the bindings can be found [here](https://github.com/arturoc/gstreamer1.0-rs).
  The API of the two is incompatible.

-[Unreleased]: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/compare/0.15.5...HEAD
+[Unreleased]: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/compare/0.15.6...HEAD
+[0.15.6]: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/compare/0.15.5...0.15.6
 [0.15.5]: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/compare/0.15.4...0.15.5
 [0.15.4]: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/compare/0.15.3...0.15.4
 [0.15.3]: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/compare/0.15.2...0.15.3

--- a/gstreamer-gl/Cargo.toml
+++ b/gstreamer-gl/Cargo.toml
 [package]
 name = "gstreamer-gl"
-version = "0.15.5"
+version = "0.15.6"
 authors = ["Sebastian Dröge <sebastian@centricular.com>",
           "Víctor M. Jáquez L. <vjaquez@igalia.com>"]
 categories = ["api-bindings", "multimedia"]

--- a/gstreamer-net/CHANGELOG.md
+++ b/gstreamer-net/CHANGELOG.md
@@ -5,6 +5,32 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html),
 specifically the [variant used by Rust](http://doc.crates.io/manifest.html#the-version-field).

+## [0.15.6] - 2020-05-28
+### Fixed
+- Assert that the data passed to `VideoCaptionMeta::add()` is not empty.
+- Don't store strong references to the object in the bus, appsink and appsrc
+  futures `Stream` / `Sink` adapters. This would keep them alive unnecessarily
+  and would prevent the `Stream` / `Sink` to ever "finish" on its own.
+- Handle receiving a `None` reply in the change function of `gst::Promise`.
+  This is apparently valid. For backwards compatibility reasons this is
+  currently replaced with an empty structure but in 0.16 the API will
+  explicitly handle `None`.
+
+### Added
+- `gst::Stream::debug()` and `gst::StreamCollection::debug()` for converting
+  into a structured string with the actual contents of each.
+- `gst::Structure::from_iter()` and `gst::Caps::from_iter()` to create
+  structures/caps from iterators.
+- `gst::Event` support for getting/setting the `gst::Stream` in the
+  `StreamStart` event.
+- `gst_video::calculate_display_ratio()` and `::guess_framerate()`.
+- Various video related `gst::CapsFeatures` in `gst_video`.
+- `TryFrom`/`From` impls for converting between `gst::Structure` and
+  `gst_video::VideoConverterConfig`.
+- Various `glib::Value` trait impls for `SDPMessage`, `StructureRef`,
+  `CapsFeatureRef` and all borrowed variants of miniobjects to be able to
+  work with the borrowed, non-owned variants when handling `glib::Value`s.
+
 ## [0.15.5] - 2020-05-03
 ### Fixed
 - Revert: Allow logging any `glib::Object` and not just `gst::Object`. This
@@ -705,7 +731,8 @@ specifically the [variant used by Rust](http://doc.crates.io/manifest.html#the-v
  (< 0.8.0) of the bindings can be found [here](https://github.com/arturoc/gstreamer1.0-rs).
  The API of the two is incompatible.

-[Unreleased]: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/compare/0.15.5...HEAD
+[Unreleased]: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/compare/0.15.6...HEAD
+[0.15.6]: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/compare/0.15.5...0.15.6
 [0.15.5]: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/compare/0.15.4...0.15.5
 [0.15.4]: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/compare/0.15.3...0.15.4
 [0.15.3]: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/compare/0.15.2...0.15.3

--- a/gstreamer-net/Cargo.toml
+++ b/gstreamer-net/Cargo.toml
 [package]
 name = "gstreamer-net"
-version = "0.15.5"
+version = "0.15.6"
 authors = ["Sebastian Dröge <sebastian@centricular.com>"]
 categories = ["api-bindings", "multimedia"]
 description = "Rust bindings for GStreamer Net library"

--- a/gstreamer-pbutils/CHANGELOG.md
+++ b/gstreamer-pbutils/CHANGELOG.md
@@ -5,6 +5,32 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html),
 specifically the [variant used by Rust](http://doc.crates.io/manifest.html#the-version-field).

+## [0.15.6] - 2020-05-28
+### Fixed
+- Assert that the data passed to `VideoCaptionMeta::add()` is not empty.
+- Don't store strong references to the object in the bus, appsink and appsrc
+  futures `Stream` / `Sink` adapters. This would keep them alive unnecessarily
+  and would prevent the `Stream` / `Sink` to ever "finish" on its own.
+- Handle receiving a `None` reply in the change function of `gst::Promise`.
+  This is apparently valid. For backwards compatibility reasons this is
+  currently replaced with an empty structure but in 0.16 the API will
+  explicitly handle `None`.
+
+### Added
+- `gst::Stream::debug()` and `gst::StreamCollection::debug()` for converting
+  into a structured string with the actual contents of each.
+- `gst::Structure::from_iter()` and `gst::Caps::from_iter()` to create
+  structures/caps from iterators.
+- `gst::Event` support for getting/setting the `gst::Stream` in the
+  `StreamStart` event.
+- `gst_video::calculate_display_ratio()` and `::guess_framerate()`.
+- Various video related `gst::CapsFeatures` in `gst_video`.
+- `TryFrom`/`From` impls for converting between `gst::Structure` and
+  `gst_video::VideoConverterConfig`.
+- Various `glib::Value` trait impls for `SDPMessage`, `StructureRef`,
+  `CapsFeatureRef` and all borrowed variants of miniobjects to be able to
+  work with the borrowed, non-owned variants when handling `glib::Value`s.
+
 ## [0.15.5] - 2020-05-03
 ### Fixed
 - Revert: Allow logging any `glib::Object` and not just `gst::Object`. This
@@ -705,7 +731,8 @@ specifically the [variant used by Rust](http://doc.crates.io/manifest.html#the-v
  (< 0.8.0) of the bindings can be found [here](https://github.com/arturoc/gstreamer1.0-rs).
  The API of the two is incompatible.

-[Unreleased]: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/compare/0.15.5...HEAD
+[Unreleased]: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/compare/0.15.6...HEAD
+[0.15.6]: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/compare/0.15.5...0.15.6
 [0.15.5]: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/compare/0.15.4...0.15.5
 [0.15.4]: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/compare/0.15.3...0.15.4
 [0.15.3]: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/compare/0.15.2...0.15.3

--- a/gstreamer-pbutils/Cargo.toml
+++ b/gstreamer-pbutils/Cargo.toml
 [package]
 name = "gstreamer-pbutils"
-version = "0.15.5"
+version = "0.15.6"
 authors = ["Sebastian Dröge <sebastian@centricular.com>"]
 categories = ["api-bindings", "multimedia"]
 description = "Rust bindings for GStreamer Base Utils library"

--- a/gstreamer-player/CHANGELOG.md
+++ b/gstreamer-player/CHANGELOG.md
@@ -5,6 +5,32 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html),
 specifically the [variant used by Rust](http://doc.crates.io/manifest.html#the-version-field).

+## [0.15.6] - 2020-05-28
+### Fixed
+- Assert that the data passed to `VideoCaptionMeta::add()` is not empty.
+- Don't store strong references to the object in the bus, appsink and appsrc
+  futures `Stream` / `Sink` adapters. This would keep them alive unnecessarily
+  and would prevent the `Stream` / `Sink` to ever "finish" on its own.
+- Handle receiving a `None` reply in the change function of `gst::Promise`.
+  This is apparently valid. For backwards compatibility reasons this is
+  currently replaced with an empty structure but in 0.16 the API will
+  explicitly handle `None`.
+
+### Added
+- `gst::Stream::debug()` and `gst::StreamCollection::debug()` for converting
+  into a structured string with the actual contents of each.
+- `gst::Structure::from_iter()` and `gst::Caps::from_iter()` to create
+  structures/caps from iterators.
+- `gst::Event` support for getting/setting the `gst::Stream` in the
+  `StreamStart` event.
+- `gst_video::calculate_display_ratio()` and `::guess_framerate()`.
+- Various video related `gst::CapsFeatures` in `gst_video`.
+- `TryFrom`/`From` impls for converting between `gst::Structure` and
+  `gst_video::VideoConverterConfig`.
+- Various `glib::Value` trait impls for `SDPMessage`, `StructureRef`,
+  `CapsFeatureRef` and all borrowed variants of miniobjects to be able to
+  work with the borrowed, non-owned variants when handling `glib::Value`s.
+
 ## [0.15.5] - 2020-05-03
 ### Fixed
 - Revert: Allow logging any `glib::Object` and not just `gst::Object`. This
@@ -705,7 +731,8 @@ specifically the [variant used by Rust](http://doc.crates.io/manifest.html#the-v
  (< 0.8.0) of the bindings can be found [here](https://github.com/arturoc/gstreamer1.0-rs).
  The API of the two is incompatible.

-[Unreleased]: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/compare/0.15.5...HEAD
+[Unreleased]: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/compare/0.15.6...HEAD
+[0.15.6]: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/compare/0.15.5...0.15.6
 [0.15.5]: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/compare/0.15.4...0.15.5
 [0.15.4]: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/compare/0.15.3...0.15.4
 [0.15.3]: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/compare/0.15.2...0.15.3

--- a/gstreamer-player/Cargo.toml
+++ b/gstreamer-player/Cargo.toml
 [package]
 name = "gstreamer-player"
-version = "0.15.5"
+version = "0.15.6"
 authors = ["Sebastian Dröge <sebastian@centricular.com>"]
 categories = ["api-bindings", "multimedia"]
 description = "Rust bindings for GStreamer Player library"