3 use std::cell::RefCell;
4 use io::byteio::ByteIOError;
5 use io::bitreader::BitReaderError;
6 use io::codebook::CodebookError;
8 #[derive(Debug,Clone,Copy,PartialEq)]
10 pub enum DecoderError {
21 pub type DecoderResult<T> = Result<T, DecoderError>;
23 impl From<ByteIOError> for DecoderError {
24 fn from(_: ByteIOError) -> Self { DecoderError::ShortData }
27 impl From<BitReaderError> for DecoderError {
28 fn from(e: BitReaderError) -> Self {
30 BitReaderError::BitstreamEnd => DecoderError::ShortData,
31 _ => DecoderError::InvalidData,
36 impl From<CodebookError> for DecoderError {
37 fn from(_: CodebookError) -> Self { DecoderError::InvalidData }
40 impl From<AllocatorError> for DecoderError {
41 fn from(_: AllocatorError) -> Self { DecoderError::AllocError }
44 macro_rules! validate {
45 ($a:expr) => { if !$a { println!("check failed at {}:{}", file!(), line!()); return Err(DecoderError::InvalidData); } };
50 lastframe: Option<NAVideoBuffer<u8>>,
55 fn new() -> Self { HAMShuffler { lastframe: None } }
57 fn clear(&mut self) { self.lastframe = None; }
59 fn add_frame(&mut self, buf: NAVideoBuffer<u8>) {
60 self.lastframe = Some(buf);
63 fn clone_ref(&mut self) -> Option<NAVideoBuffer<u8>> {
64 if let Some(ref mut frm) = self.lastframe {
65 let newfrm = frm.copy_buffer();
66 *frm = newfrm.clone();
73 fn get_output_frame(&mut self) -> Option<NAVideoBuffer<u8>> {
74 match self.lastframe {
75 Some(ref frm) => Some(frm.clone()),
83 lastframe: Option<NAVideoBuffer<u8>>,
88 fn new() -> Self { IPShuffler { lastframe: None } }
90 fn clear(&mut self) { self.lastframe = None; }
92 fn add_frame(&mut self, buf: NAVideoBuffer<u8>) {
93 self.lastframe = Some(buf);
96 fn get_ref(&mut self) -> Option<NAVideoBuffer<u8>> {
97 if let Some(ref frm) = self.lastframe {
105 pub trait NADecoder {
106 fn init(&mut self, info: Rc<NACodecInfo>) -> DecoderResult<()>;
107 fn decode(&mut self, pkt: &NAPacket) -> DecoderResult<NAFrameRef>;
110 #[derive(Clone,Copy)]
111 pub struct DecoderInfo {
113 get_decoder: fn () -> Box<NADecoder>,
116 #[cfg(feature="h263")]
119 #[cfg(feature="decoder_gdvvid")]
121 #[cfg(any(feature="decoder_indeo2", feature="decoder_indeo3", feature="decoder_indeo4", feature="decoder_indeo5", feature="decoder_imc"))]
123 #[cfg(feature="h263")]
126 #[cfg(feature="decoder_pcm")]
129 const DECODERS: &[DecoderInfo] = &[
130 #[cfg(feature="decoder_gdvvid")]
131 DecoderInfo { name: "gdv-video", get_decoder: gremlinvideo::get_decoder },
132 #[cfg(feature="decoder_indeo2")]
133 DecoderInfo { name: "indeo2", get_decoder: indeo::indeo2::get_decoder },
134 #[cfg(feature="decoder_indeo3")]
135 DecoderInfo { name: "indeo3", get_decoder: indeo::indeo3::get_decoder },
136 #[cfg(feature="decoder_indeo4")]
137 DecoderInfo { name: "indeo4", get_decoder: indeo::indeo4::get_decoder },
138 #[cfg(feature="decoder_indeo5")]
139 DecoderInfo { name: "indeo5", get_decoder: indeo::indeo5::get_decoder },
140 #[cfg(feature="decoder_intel263")]
141 DecoderInfo { name: "intel263", get_decoder: h263::intel263::get_decoder },
142 #[cfg(feature="decoder_realvideo1")]
143 DecoderInfo { name: "realvideo1", get_decoder: h263::rv10::get_decoder },
144 #[cfg(feature="decoder_realvideo2")]
145 DecoderInfo { name: "realvideo2", get_decoder: h263::rv20::get_decoder },
147 #[cfg(feature="decoder_pcm")]
148 DecoderInfo { name: "pcm", get_decoder: pcm::get_decoder },
149 #[cfg(feature="decoder_imc")]
150 DecoderInfo { name: "imc", get_decoder: indeo::imc::get_decoder_imc },
151 #[cfg(feature="decoder_imc")]
152 DecoderInfo { name: "iac", get_decoder: indeo::imc::get_decoder_iac },
155 pub fn find_decoder(name: &str) -> Option<fn () -> Box<NADecoder>> {
156 for &dec in DECODERS {
157 if dec.name == name {
158 return Some(dec.get_decoder);