| 1 | use frame::*; |
| 2 | use std::rc::Rc; |
| 3 | use std::cell::RefCell; |
| 4 | use std::mem; |
| 5 | use io::byteio::ByteIOError; |
| 6 | use io::bitreader::BitReaderError; |
| 7 | use io::codebook::CodebookError; |
| 8 | |
| 9 | #[derive(Debug,Clone,Copy,PartialEq)] |
| 10 | #[allow(dead_code)] |
| 11 | pub enum DecoderError { |
| 12 | NoFrame, |
| 13 | AllocError, |
| 14 | TryAgain, |
| 15 | InvalidData, |
| 16 | ShortData, |
| 17 | MissingReference, |
| 18 | NotImplemented, |
| 19 | Bug, |
| 20 | } |
| 21 | |
| 22 | pub type DecoderResult<T> = Result<T, DecoderError>; |
| 23 | |
| 24 | impl From<ByteIOError> for DecoderError { |
| 25 | fn from(_: ByteIOError) -> Self { DecoderError::ShortData } |
| 26 | } |
| 27 | |
| 28 | impl From<BitReaderError> for DecoderError { |
| 29 | fn from(e: BitReaderError) -> Self { |
| 30 | match e { |
| 31 | BitReaderError::BitstreamEnd => DecoderError::ShortData, |
| 32 | _ => DecoderError::InvalidData, |
| 33 | } |
| 34 | } |
| 35 | } |
| 36 | |
| 37 | impl From<CodebookError> for DecoderError { |
| 38 | fn from(_: CodebookError) -> Self { DecoderError::InvalidData } |
| 39 | } |
| 40 | |
| 41 | impl From<AllocatorError> for DecoderError { |
| 42 | fn from(_: AllocatorError) -> Self { DecoderError::AllocError } |
| 43 | } |
| 44 | |
| 45 | macro_rules! validate { |
| 46 | ($a:expr) => { if !$a { println!("check failed at {}:{}", file!(), line!()); return Err(DecoderError::InvalidData); } }; |
| 47 | } |
| 48 | |
| 49 | #[allow(dead_code)] |
| 50 | struct HAMShuffler { |
| 51 | lastframe: Option<NAVideoBuffer<u8>>, |
| 52 | } |
| 53 | |
| 54 | impl HAMShuffler { |
| 55 | #[allow(dead_code)] |
| 56 | fn new() -> Self { HAMShuffler { lastframe: None } } |
| 57 | #[allow(dead_code)] |
| 58 | fn clear(&mut self) { self.lastframe = None; } |
| 59 | #[allow(dead_code)] |
| 60 | fn add_frame(&mut self, buf: NAVideoBuffer<u8>) { |
| 61 | self.lastframe = Some(buf); |
| 62 | } |
| 63 | #[allow(dead_code)] |
| 64 | fn clone_ref(&mut self) -> Option<NAVideoBuffer<u8>> { |
| 65 | if let Some(ref mut frm) = self.lastframe { |
| 66 | let newfrm = frm.copy_buffer(); |
| 67 | *frm = newfrm.clone(); |
| 68 | Some(newfrm) |
| 69 | } else { |
| 70 | None |
| 71 | } |
| 72 | } |
| 73 | #[allow(dead_code)] |
| 74 | fn get_output_frame(&mut self) -> Option<NAVideoBuffer<u8>> { |
| 75 | match self.lastframe { |
| 76 | Some(ref frm) => Some(frm.clone()), |
| 77 | None => None, |
| 78 | } |
| 79 | } |
| 80 | } |
| 81 | |
| 82 | #[allow(dead_code)] |
| 83 | struct IPShuffler { |
| 84 | lastframe: Option<NAVideoBuffer<u8>>, |
| 85 | } |
| 86 | |
| 87 | impl IPShuffler { |
| 88 | #[allow(dead_code)] |
| 89 | fn new() -> Self { IPShuffler { lastframe: None } } |
| 90 | #[allow(dead_code)] |
| 91 | fn clear(&mut self) { self.lastframe = None; } |
| 92 | #[allow(dead_code)] |
| 93 | fn add_frame(&mut self, buf: NAVideoBuffer<u8>) { |
| 94 | self.lastframe = Some(buf); |
| 95 | } |
| 96 | #[allow(dead_code)] |
| 97 | fn get_ref(&mut self) -> Option<NAVideoBuffer<u8>> { |
| 98 | if let Some(ref frm) = self.lastframe { |
| 99 | Some(frm.clone()) |
| 100 | } else { |
| 101 | None |
| 102 | } |
| 103 | } |
| 104 | } |
| 105 | |
| 106 | #[allow(dead_code)] |
| 107 | struct IPBShuffler { |
| 108 | lastframe: Option<NAVideoBuffer<u8>>, |
| 109 | nextframe: Option<NAVideoBuffer<u8>>, |
| 110 | } |
| 111 | |
| 112 | impl IPBShuffler { |
| 113 | #[allow(dead_code)] |
| 114 | fn new() -> Self { IPBShuffler { lastframe: None, nextframe: None } } |
| 115 | #[allow(dead_code)] |
| 116 | fn clear(&mut self) { self.lastframe = None; self.nextframe = None; } |
| 117 | #[allow(dead_code)] |
| 118 | fn add_frame(&mut self, buf: NAVideoBuffer<u8>) { |
| 119 | mem::swap(&mut self.lastframe, &mut self.nextframe); |
| 120 | self.lastframe = Some(buf); |
| 121 | } |
| 122 | #[allow(dead_code)] |
| 123 | fn get_lastref(&mut self) -> Option<NAVideoBuffer<u8>> { |
| 124 | if let Some(ref frm) = self.lastframe { |
| 125 | Some(frm.clone()) |
| 126 | } else { |
| 127 | None |
| 128 | } |
| 129 | } |
| 130 | #[allow(dead_code)] |
| 131 | fn get_nextref(&mut self) -> Option<NAVideoBuffer<u8>> { |
| 132 | if let Some(ref frm) = self.nextframe { |
| 133 | Some(frm.clone()) |
| 134 | } else { |
| 135 | None |
| 136 | } |
| 137 | } |
| 138 | } |
| 139 | |
| 140 | pub trait NADecoder { |
| 141 | fn init(&mut self, info: Rc<NACodecInfo>) -> DecoderResult<()>; |
| 142 | fn decode(&mut self, pkt: &NAPacket) -> DecoderResult<NAFrameRef>; |
| 143 | } |
| 144 | |
| 145 | #[derive(Clone,Copy)] |
| 146 | pub struct DecoderInfo { |
| 147 | name: &'static str, |
| 148 | get_decoder: fn () -> Box<NADecoder>, |
| 149 | } |
| 150 | |
| 151 | #[cfg(feature="h263")] |
| 152 | mod blockdsp; |
| 153 | |
| 154 | #[cfg(feature="decoder_clearvideo")] |
| 155 | mod clearvideo; |
| 156 | #[cfg(feature="decoder_gdvvid")] |
| 157 | mod gremlinvideo; |
| 158 | #[cfg(any(feature="decoder_indeo2", feature="decoder_indeo3", feature="decoder_indeo4", feature="decoder_indeo5", feature="decoder_imc"))] |
| 159 | mod indeo; |
| 160 | #[cfg(feature="h263")] |
| 161 | mod h263; |
| 162 | |
| 163 | #[cfg(feature="decoder_pcm")] |
| 164 | mod pcm; |
| 165 | |
| 166 | const DECODERS: &[DecoderInfo] = &[ |
| 167 | #[cfg(feature="decoder_clearvideo")] |
| 168 | DecoderInfo { name: "clearvideo", get_decoder: clearvideo::get_decoder }, |
| 169 | #[cfg(feature="decoder_clearvideo")] |
| 170 | DecoderInfo { name: "clearvideo_rm", get_decoder: clearvideo::get_decoder_rm }, |
| 171 | #[cfg(feature="decoder_gdvvid")] |
| 172 | DecoderInfo { name: "gdv-video", get_decoder: gremlinvideo::get_decoder }, |
| 173 | #[cfg(feature="decoder_indeo2")] |
| 174 | DecoderInfo { name: "indeo2", get_decoder: indeo::indeo2::get_decoder }, |
| 175 | #[cfg(feature="decoder_indeo3")] |
| 176 | DecoderInfo { name: "indeo3", get_decoder: indeo::indeo3::get_decoder }, |
| 177 | #[cfg(feature="decoder_indeo4")] |
| 178 | DecoderInfo { name: "indeo4", get_decoder: indeo::indeo4::get_decoder }, |
| 179 | #[cfg(feature="decoder_indeo5")] |
| 180 | DecoderInfo { name: "indeo5", get_decoder: indeo::indeo5::get_decoder }, |
| 181 | #[cfg(feature="decoder_intel263")] |
| 182 | DecoderInfo { name: "intel263", get_decoder: h263::intel263::get_decoder }, |
| 183 | #[cfg(feature="decoder_realvideo1")] |
| 184 | DecoderInfo { name: "realvideo1", get_decoder: h263::rv10::get_decoder }, |
| 185 | #[cfg(feature="decoder_realvideo2")] |
| 186 | DecoderInfo { name: "realvideo2", get_decoder: h263::rv20::get_decoder }, |
| 187 | |
| 188 | #[cfg(feature="decoder_pcm")] |
| 189 | DecoderInfo { name: "pcm", get_decoder: pcm::get_decoder }, |
| 190 | #[cfg(feature="decoder_imc")] |
| 191 | DecoderInfo { name: "imc", get_decoder: indeo::imc::get_decoder_imc }, |
| 192 | #[cfg(feature="decoder_imc")] |
| 193 | DecoderInfo { name: "iac", get_decoder: indeo::imc::get_decoder_iac }, |
| 194 | ]; |
| 195 | |
| 196 | pub fn find_decoder(name: &str) -> Option<fn () -> Box<NADecoder>> { |
| 197 | for &dec in DECODERS { |
| 198 | if dec.name == name { |
| 199 | return Some(dec.get_decoder); |
| 200 | } |
| 201 | } |
| 202 | None |
| 203 | } |