codec/capabilities: add Capabilities and getter

src/codec/capabilities.rs

@@ -0,0 +1,25 @@
+use libc::c_uint;
+use ffi::*;
+
+bitflags! {
+	flags Capabilities: c_uint {
+		const DRAW_HORIZ_BAND     = CODEC_CAP_DRAW_HORIZ_BAND,
+		const DR1                 = CODEC_CAP_DR1,
+		const TRUNCATED           = CODEC_CAP_TRUNCATED,
+		const HWACCEL             = CODEC_CAP_HWACCEL,
+		const DELAY               = CODEC_CAP_DELAY,
+		const SMALL_LAST_FRAME    = CODEC_CAP_SMALL_LAST_FRAME,
+		const HWACCEL_VDPAU       = CODEC_CAP_HWACCEL_VDPAU,
+		const SUBFRAMES           = CODEC_CAP_SUBFRAMES,
+		const EXPERIMENTAL        = CODEC_CAP_EXPERIMENTAL,
+		const CHANNEL_CONF        = CODEC_CAP_CHANNEL_CONF,
+		const NEG_LINESIZES       = CODEC_CAP_NEG_LINESIZES,
+		const FRAME_THREADS       = CODEC_CAP_FRAME_THREADS,
+		const SLICE_THREADS       = CODEC_CAP_SLICE_THREADS,
+		const PARAM_CHANGE        = CODEC_CAP_PARAM_CHANGE,
+		const AUTO_THREADS        = CODEC_CAP_AUTO_THREADS,
+		const VARIABLE_FRAME_SIZE = CODEC_CAP_VARIABLE_FRAME_SIZE,
+		const INTRA_ONLY          = CODEC_CAP_INTRA_ONLY,
+		const LOSSLESS            = CODEC_CAP_LOSSLESS,
+	}
+}

src/codec/codec.rs

@@ -3,7 +3,7 @@ use std::ffi::CStr;
 use std::str::from_utf8_unchecked;
 
 use ffi::*;
-use super::{Id, Context, Video, Audio};
+use super::{Id, Context, Video, Audio, Capabilities};
 use ::{Error, media};
 use ::codec::context::Opened;
 
@@ -90,13 +90,15 @@ impl<'a> Codec<'a> {
 		}
 	}
 
-	// capabilities
-
 	pub fn max_lowres(&self) -> i32 {
 		unsafe {
 			av_codec_get_max_lowres(self.as_ptr())
 		}
 	}
 
-	// profiles
+	pub fn capabilities(&self) -> Capabilities {
+		unsafe {
+			Capabilities::from_bits_truncate((*self.as_ptr()).capabilities as u32)
+		}
+	}
 }

src/codec/mod.rs

@@ -12,6 +12,9 @@ pub mod discard;
 pub mod context;
 pub use self::context::Context;
 
+pub mod capabilities;
+pub use self::capabilities::Capabilities;
+
 pub mod codec;
 
 pub mod video;