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#[cfg(feature="decoder_indeo2")]
pub mod indeo2;
use std::rc::Rc;
use frame::*;
use io::byteio::ByteIOError;
use io::bitreader::BitReaderError;
use io::codebook::CodebookError;
#[derive(Debug,Clone,Copy,PartialEq)]
#[allow(dead_code)]
pub enum DecoderError {
InvalidData,
ShortData,
MissingReference,
NotImplemented,
Bug,
}
type DecoderResult<T> = Result<T, DecoderError>;
impl From<ByteIOError> for DecoderError {
fn from(_: ByteIOError) -> Self { DecoderError::ShortData }
}
impl From<BitReaderError> for DecoderError {
fn from(e: BitReaderError) -> Self {
match e {
BitReaderError::BitstreamEnd => DecoderError::ShortData,
_ => DecoderError::InvalidData,
}
}
}
impl From<CodebookError> for DecoderError {
fn from(_: CodebookError) -> Self { DecoderError::InvalidData }
}
pub trait NADecoder {
fn init(&mut self, info: Rc<NACodecInfo>) -> DecoderResult<()>;
fn decode(&mut self, pkt: &NAPacket) -> DecoderResult<Rc<NAFrame>>;
}
#[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
}
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