use frame buffers with codec-specific type of data

[nihav.git] / src / codecs / mod.rs

diff --git a/src/codecs/mod.rs b/src/codecs/mod.rs
index 782d4513a0d2dfe42b7cebeb0407373ca153e44c..a2c10fe93f013b1f1d5f6cbe21b11e47e508fdc9 100644 (file)
--- a/src/codecs/mod.rs
+++ b/src/codecs/mod.rs
@@ -1,9 +1,9 @@
 #[cfg(feature="decoder_indeo2")]
 pub mod indeo2;
 
-use std::rc::Rc;
 use frame::*;
-use demuxers::*;
+use std::rc::Rc;
+use std::cell::RefCell;
 use io::byteio::ByteIOError;
 use io::bitreader::BitReaderError;
 use io::codebook::CodebookError;
@@ -37,8 +37,60 @@ impl From<CodebookError> for DecoderError {
     fn from(_: CodebookError) -> Self { DecoderError::InvalidData }
 }
 
+#[allow(dead_code)]
+struct HAMShuffler {
+    lastframe: Option<NAVideoBuffer<u8>>,
+}
+
+impl HAMShuffler {
+    #[allow(dead_code)]
+    fn new() -> Self { HAMShuffler { lastframe: None } }
+    #[allow(dead_code)]
+    fn clear(&mut self) { self.lastframe = None; }
+    #[allow(dead_code)]
+    fn add_frame(&mut self, buf: NAVideoBuffer<u8>) {
+        self.lastframe = Some(buf);
+    }
+    #[allow(dead_code)]
+    fn clone_ref(&mut self) -> Option<NAVideoBuffer<u8>> {
+        if let Some(ref mut frm) = self.lastframe {
+            let newfrm = frm.copy_buffer();
+            *frm = newfrm.clone();
+            Some(newfrm)
+        } else {
+            None
+        }
+    }
+    #[allow(dead_code)]
+    fn get_output_frame(&mut self) -> Option<NAVideoBuffer<u8>> {
+        match self.lastframe {
+            Some(ref frm) => Some(frm.clone()),
+            None => None,
+        }
+    }
+}
+
 pub trait NADecoder {
     fn init(&mut self, info: Rc<NACodecInfo>) -> DecoderResult<()>;
-    fn decode(&mut self, pkt: &NAPacket) -> DecoderResult<Rc<NAFrame>>;
+    fn decode(&mut self, pkt: &NAPacket) -> DecoderResult<NAFrameRef>;
 }
 
+#[derive(Clone,Copy)]
+pub struct DecoderInfo {
+    name: &'static str,
+    get_decoder: fn () -> Box<NADecoder>,
+}
+
+const DECODERS: &[DecoderInfo] = &[
+#[cfg(feature="decoder_indeo2")]
+    DecoderInfo { name: "indeo2", get_decoder: indeo2::get_decoder },
+];
+
+pub fn find_decoder(name: &str) -> Option<fn () -> Box<NADecoder>> {
+    for &dec in DECODERS {
+        if dec.name == name {
+            return Some(dec.get_decoder);
+        }
+    }
+    None
+}