From 02a43819a761c5bcac99b1a5ce07d65045fccf4e Mon Sep 17 00:00:00 2001
From: Mathieu Duponchelle <mathieu@centricular.com>
Date: Fri, 22 May 2020 21:27:56 +0200
Subject: [PATCH] gstreamer-video: expose caps features

---
 gstreamer-video/src/caps_features.rs | 56 ++++++++++++++++++++++++++++
 gstreamer-video/src/lib.rs           |  9 +++++
 2 files changed, 65 insertions(+)
 create mode 100644 gstreamer-video/src/caps_features.rs

diff --git a/gstreamer-video/src/caps_features.rs b/gstreamer-video/src/caps_features.rs
new file mode 100644
index 000000000..6fa1b7092
--- /dev/null
+++ b/gstreamer-video/src/caps_features.rs
@@ -0,0 +1,56 @@
+// Copyright (C) 2020 Mathieu Duponchelle <mathieu@centricular.com>
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+use gst::CapsFeatures;
+use gst_video_sys;
+use std::ffi::CStr;
+
+use once_cell::sync::Lazy;
+
+pub static CAPS_FEATURE_FORMAT_INTERLACED: Lazy<&'static str> = Lazy::new(|| unsafe {
+    CStr::from_ptr(gst_video_sys::GST_CAPS_FEATURE_FORMAT_INTERLACED)
+        .to_str()
+        .unwrap()
+});
+pub static CAPS_FEATURES_FORMAT_INTERLACED: Lazy<CapsFeatures> =
+    Lazy::new(|| CapsFeatures::new(&[*CAPS_FEATURE_FORMAT_INTERLACED]));
+
+pub static CAPS_FEATURE_META_GST_VIDEO_AFFINE_TRANSFORMATION_META: Lazy<&'static str> =
+    Lazy::new(|| unsafe {
+        CStr::from_ptr(gst_video_sys::GST_CAPS_FEATURE_META_GST_VIDEO_AFFINE_TRANSFORMATION_META)
+            .to_str()
+            .unwrap()
+    });
+pub static CAPS_FEATURES_META_GST_VIDEO_AFFINE_TRANSFORMATION_META: Lazy<CapsFeatures> =
+    Lazy::new(|| CapsFeatures::new(&[*CAPS_FEATURE_META_GST_VIDEO_AFFINE_TRANSFORMATION_META]));
+
+pub static CAPS_FEATURE_META_GST_VIDEO_GL_TEXTURE_UPLOAD_META: Lazy<&'static str> =
+    Lazy::new(|| unsafe {
+        CStr::from_ptr(gst_video_sys::GST_CAPS_FEATURE_META_GST_VIDEO_GL_TEXTURE_UPLOAD_META)
+            .to_str()
+            .unwrap()
+    });
+pub static CAPS_FEATURES_META_GST_VIDEO_GL_TEXTURE_UPLOAD_META: Lazy<CapsFeatures> =
+    Lazy::new(|| CapsFeatures::new(&[*CAPS_FEATURE_META_GST_VIDEO_GL_TEXTURE_UPLOAD_META]));
+
+pub static CAPS_FEATURE_META_GST_VIDEO_META: Lazy<&'static str> = Lazy::new(|| unsafe {
+    CStr::from_ptr(gst_video_sys::GST_CAPS_FEATURE_META_GST_VIDEO_META)
+        .to_str()
+        .unwrap()
+});
+pub static CAPS_FEATURES_META_GST_VIDEO_META: Lazy<CapsFeatures> =
+    Lazy::new(|| CapsFeatures::new(&[*CAPS_FEATURE_META_GST_VIDEO_META]));
+
+pub static CAPS_FEATURE_META_GST_VIDEO_OVERLAY_COMPOSITION: Lazy<&'static str> =
+    Lazy::new(|| unsafe {
+        CStr::from_ptr(gst_video_sys::GST_CAPS_FEATURE_META_GST_VIDEO_OVERLAY_COMPOSITION)
+            .to_str()
+            .unwrap()
+    });
+pub static CAPS_FEATURES_META_GST_VIDEO_OVERLAY_COMPOSITION: Lazy<CapsFeatures> =
+    Lazy::new(|| CapsFeatures::new(&[*CAPS_FEATURE_META_GST_VIDEO_OVERLAY_COMPOSITION]));
diff --git a/gstreamer-video/src/lib.rs b/gstreamer-video/src/lib.rs
index 953a71292..b321c355c 100644
--- a/gstreamer-video/src/lib.rs
+++ b/gstreamer-video/src/lib.rs
@@ -42,6 +42,15 @@ macro_rules! skip_assert_initialized {
 mod auto;
 pub use auto::*;
 
+mod caps_features;
+pub use caps_features::{
+    CAPS_FEATURES_FORMAT_INTERLACED, CAPS_FEATURES_META_GST_VIDEO_AFFINE_TRANSFORMATION_META,
+    CAPS_FEATURES_META_GST_VIDEO_GL_TEXTURE_UPLOAD_META, CAPS_FEATURES_META_GST_VIDEO_META,
+    CAPS_FEATURES_META_GST_VIDEO_OVERLAY_COMPOSITION, CAPS_FEATURE_FORMAT_INTERLACED,
+    CAPS_FEATURE_META_GST_VIDEO_AFFINE_TRANSFORMATION_META,
+    CAPS_FEATURE_META_GST_VIDEO_GL_TEXTURE_UPLOAD_META, CAPS_FEATURE_META_GST_VIDEO_META,
+    CAPS_FEATURE_META_GST_VIDEO_OVERLAY_COMPOSITION,
+};
 mod video_format;
 pub use video_format::*;
 mod video_format_info;