Fix issues related to duplicate enum variants

C enums allow duplicate variants, but Rust enums don't. At some point bindgen
switched to generating duplicate variants as associated constants instead of
module-level constants, so use SomeEnum::* broke. Here we switch to associated
constants in the native API as well.

src/util/color/space.rs

@@ -14,7 +14,6 @@ pub enum Space {
     BT470BG,
     SMPTE170M,
     SMPTE240M,
-    YCOCG,
     YCGCO,
     BT2020NCL,
     BT2020CL,
@@ -26,6 +25,8 @@ pub enum Space {
 }
 
 impl Space {
+    pub const YCOCG: Space = Space::YCGCO;
+
     pub fn name(&self) -> Option<&'static str> {
         if *self == Space::Unspecified {
             return None;
@@ -48,7 +49,7 @@ impl From<AVColorSpace> for Space {
             AVCOL_SPC_BT470BG => Space::BT470BG,
             AVCOL_SPC_SMPTE170M => Space::SMPTE170M,
             AVCOL_SPC_SMPTE240M => Space::SMPTE240M,
-            AVCOL_SPC_YCOCG => Space::YCOCG,
+            AVCOL_SPC_YCGCO => Space::YCGCO,
             AVCOL_SPC_BT2020_NCL => Space::BT2020NCL,
             AVCOL_SPC_BT2020_CL => Space::BT2020CL,
             AVCOL_SPC_SMPTE2085 => Space::SMPTE2085,
@@ -72,7 +73,6 @@ impl Into<AVColorSpace> for Space {
             Space::BT470BG => AVCOL_SPC_BT470BG,
             Space::SMPTE170M => AVCOL_SPC_SMPTE170M,
             Space::SMPTE240M => AVCOL_SPC_SMPTE240M,
-            Space::YCOCG => AVCOL_SPC_YCOCG,
             Space::YCGCO => AVCOL_SPC_YCGCO,
             Space::BT2020NCL => AVCOL_SPC_BT2020_NCL,
             Space::BT2020CL => AVCOL_SPC_BT2020_CL,

src/util/format/pixel.rs

@@ -223,9 +223,6 @@ pub enum Pixel {
 
     // --- defaults
     XVMC,
-    Y400A,
-    GRAY8A,
-    GBR24P,
 
     RGB32,
     RGB32_1,
@@ -324,6 +321,10 @@ unsafe impl Send for Descriptor {}
 unsafe impl Sync for Descriptor {}
 
 impl Pixel {
+    pub const Y400A: Pixel = Pixel::YA8;
+    pub const GRAY8A: Pixel = Pixel::YA8;
+    pub const GBR24P: Pixel = Pixel::GBRP;
+
     pub fn descriptor(self) -> Option<Descriptor> {
         unsafe {
             let ptr = av_pix_fmt_desc_get(self.into());
@@ -820,9 +821,6 @@ impl Into<AVPixelFormat> for Pixel {
 
             // --- defaults
             Pixel::XVMC => AV_PIX_FMT_XVMC,
-            Pixel::Y400A => AV_PIX_FMT_Y400A,
-            Pixel::GRAY8A => AV_PIX_FMT_GRAY8A,
-            Pixel::GBR24P => AV_PIX_FMT_GBR24P,
 
             Pixel::RGB32 => AV_PIX_FMT_RGB32,
             Pixel::RGB32_1 => AV_PIX_FMT_RGB32_1,