| 1 | use std::fmt; |
| 2 | use std::ops::{Add, AddAssign, Sub, SubAssign}; |
| 3 | |
| 4 | use frame::*; |
| 5 | use std::rc::Rc; |
| 6 | use std::cell::RefCell; |
| 7 | use std::mem; |
| 8 | use io::byteio::ByteIOError; |
| 9 | use io::bitreader::BitReaderError; |
| 10 | use io::codebook::CodebookError; |
| 11 | |
| 12 | #[derive(Debug,Clone,Copy,PartialEq)] |
| 13 | #[allow(dead_code)] |
| 14 | pub enum DecoderError { |
| 15 | NoFrame, |
| 16 | AllocError, |
| 17 | TryAgain, |
| 18 | InvalidData, |
| 19 | ShortData, |
| 20 | MissingReference, |
| 21 | NotImplemented, |
| 22 | Bug, |
| 23 | } |
| 24 | |
| 25 | pub type DecoderResult<T> = Result<T, DecoderError>; |
| 26 | |
| 27 | impl From<ByteIOError> for DecoderError { |
| 28 | fn from(_: ByteIOError) -> Self { DecoderError::ShortData } |
| 29 | } |
| 30 | |
| 31 | impl From<BitReaderError> for DecoderError { |
| 32 | fn from(e: BitReaderError) -> Self { |
| 33 | match e { |
| 34 | BitReaderError::BitstreamEnd => DecoderError::ShortData, |
| 35 | _ => DecoderError::InvalidData, |
| 36 | } |
| 37 | } |
| 38 | } |
| 39 | |
| 40 | impl From<CodebookError> for DecoderError { |
| 41 | fn from(_: CodebookError) -> Self { DecoderError::InvalidData } |
| 42 | } |
| 43 | |
| 44 | impl From<AllocatorError> for DecoderError { |
| 45 | fn from(_: AllocatorError) -> Self { DecoderError::AllocError } |
| 46 | } |
| 47 | |
| 48 | macro_rules! validate { |
| 49 | ($a:expr) => { if !$a { println!("check failed at {}:{}", file!(), line!()); return Err(DecoderError::InvalidData); } }; |
| 50 | } |
| 51 | |
| 52 | #[allow(dead_code)] |
| 53 | struct HAMShuffler { |
| 54 | lastframe: Option<NAVideoBuffer<u8>>, |
| 55 | } |
| 56 | |
| 57 | impl HAMShuffler { |
| 58 | #[allow(dead_code)] |
| 59 | fn new() -> Self { HAMShuffler { lastframe: None } } |
| 60 | #[allow(dead_code)] |
| 61 | fn clear(&mut self) { self.lastframe = None; } |
| 62 | #[allow(dead_code)] |
| 63 | fn add_frame(&mut self, buf: NAVideoBuffer<u8>) { |
| 64 | self.lastframe = Some(buf); |
| 65 | } |
| 66 | #[allow(dead_code)] |
| 67 | fn clone_ref(&mut self) -> Option<NAVideoBuffer<u8>> { |
| 68 | if let Some(ref mut frm) = self.lastframe { |
| 69 | let newfrm = frm.copy_buffer(); |
| 70 | *frm = newfrm.clone(); |
| 71 | Some(newfrm) |
| 72 | } else { |
| 73 | None |
| 74 | } |
| 75 | } |
| 76 | #[allow(dead_code)] |
| 77 | fn get_output_frame(&mut self) -> Option<NAVideoBuffer<u8>> { |
| 78 | match self.lastframe { |
| 79 | Some(ref frm) => Some(frm.clone()), |
| 80 | None => None, |
| 81 | } |
| 82 | } |
| 83 | } |
| 84 | |
| 85 | #[allow(dead_code)] |
| 86 | struct IPShuffler { |
| 87 | lastframe: Option<NAVideoBuffer<u8>>, |
| 88 | } |
| 89 | |
| 90 | impl IPShuffler { |
| 91 | #[allow(dead_code)] |
| 92 | fn new() -> Self { IPShuffler { lastframe: None } } |
| 93 | #[allow(dead_code)] |
| 94 | fn clear(&mut self) { self.lastframe = None; } |
| 95 | #[allow(dead_code)] |
| 96 | fn add_frame(&mut self, buf: NAVideoBuffer<u8>) { |
| 97 | self.lastframe = Some(buf); |
| 98 | } |
| 99 | #[allow(dead_code)] |
| 100 | fn get_ref(&mut self) -> Option<NAVideoBuffer<u8>> { |
| 101 | if let Some(ref frm) = self.lastframe { |
| 102 | Some(frm.clone()) |
| 103 | } else { |
| 104 | None |
| 105 | } |
| 106 | } |
| 107 | } |
| 108 | |
| 109 | #[allow(dead_code)] |
| 110 | struct IPBShuffler { |
| 111 | lastframe: Option<NAVideoBuffer<u8>>, |
| 112 | nextframe: Option<NAVideoBuffer<u8>>, |
| 113 | } |
| 114 | |
| 115 | impl IPBShuffler { |
| 116 | #[allow(dead_code)] |
| 117 | fn new() -> Self { IPBShuffler { lastframe: None, nextframe: None } } |
| 118 | #[allow(dead_code)] |
| 119 | fn clear(&mut self) { self.lastframe = None; self.nextframe = None; } |
| 120 | #[allow(dead_code)] |
| 121 | fn add_frame(&mut self, buf: NAVideoBuffer<u8>) { |
| 122 | mem::swap(&mut self.lastframe, &mut self.nextframe); |
| 123 | self.lastframe = Some(buf); |
| 124 | } |
| 125 | #[allow(dead_code)] |
| 126 | fn get_lastref(&mut self) -> Option<NAVideoBuffer<u8>> { |
| 127 | if let Some(ref frm) = self.lastframe { |
| 128 | Some(frm.clone()) |
| 129 | } else { |
| 130 | None |
| 131 | } |
| 132 | } |
| 133 | #[allow(dead_code)] |
| 134 | fn get_nextref(&mut self) -> Option<NAVideoBuffer<u8>> { |
| 135 | if let Some(ref frm) = self.nextframe { |
| 136 | Some(frm.clone()) |
| 137 | } else { |
| 138 | None |
| 139 | } |
| 140 | } |
| 141 | } |
| 142 | |
| 143 | #[derive(Debug,Clone,Copy)] |
| 144 | pub struct MV { |
| 145 | pub x: i16, |
| 146 | pub y: i16, |
| 147 | } |
| 148 | |
| 149 | impl MV { |
| 150 | pub fn new(x: i16, y: i16) -> Self { MV{ x: x, y: y } } |
| 151 | pub fn pred(a: MV, b: MV, c: MV) -> Self { |
| 152 | let x; |
| 153 | if a.x < b.x { |
| 154 | if b.x < c.x { |
| 155 | x = b.x; |
| 156 | } else { |
| 157 | if a.x < c.x { x = c.x; } else { x = a.x; } |
| 158 | } |
| 159 | } else { |
| 160 | if b.x < c.x { |
| 161 | if a.x < c.x { x = a.x; } else { x = c.x; } |
| 162 | } else { |
| 163 | x = b.x; |
| 164 | } |
| 165 | } |
| 166 | let y; |
| 167 | if a.y < b.y { |
| 168 | if b.y < c.y { |
| 169 | y = b.y; |
| 170 | } else { |
| 171 | if a.y < c.y { y = c.y; } else { y = a.y; } |
| 172 | } |
| 173 | } else { |
| 174 | if b.y < c.y { |
| 175 | if a.y < c.y { y = a.y; } else { y = c.y; } |
| 176 | } else { |
| 177 | y = b.y; |
| 178 | } |
| 179 | } |
| 180 | MV { x: x, y: y } |
| 181 | } |
| 182 | } |
| 183 | |
| 184 | pub const ZERO_MV: MV = MV { x: 0, y: 0 }; |
| 185 | |
| 186 | impl Add for MV { |
| 187 | type Output = MV; |
| 188 | fn add(self, other: MV) -> MV { MV { x: self.x + other.x, y: self.y + other.y } } |
| 189 | } |
| 190 | |
| 191 | impl AddAssign for MV { |
| 192 | fn add_assign(&mut self, other: MV) { self.x += other.x; self.y += other.y; } |
| 193 | } |
| 194 | |
| 195 | impl Sub for MV { |
| 196 | type Output = MV; |
| 197 | fn sub(self, other: MV) -> MV { MV { x: self.x - other.x, y: self.y - other.y } } |
| 198 | } |
| 199 | |
| 200 | impl SubAssign for MV { |
| 201 | fn sub_assign(&mut self, other: MV) { self.x -= other.x; self.y -= other.y; } |
| 202 | } |
| 203 | |
| 204 | impl fmt::Display for MV { |
| 205 | fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { |
| 206 | write!(f, "{},{}", self.x, self.y) |
| 207 | } |
| 208 | } |
| 209 | |
| 210 | |
| 211 | pub trait NADecoder { |
| 212 | fn init(&mut self, info: Rc<NACodecInfo>) -> DecoderResult<()>; |
| 213 | fn decode(&mut self, pkt: &NAPacket) -> DecoderResult<NAFrameRef>; |
| 214 | } |
| 215 | |
| 216 | #[derive(Clone,Copy)] |
| 217 | pub struct DecoderInfo { |
| 218 | name: &'static str, |
| 219 | get_decoder: fn () -> Box<NADecoder>, |
| 220 | } |
| 221 | |
| 222 | #[cfg(feature="h263")] |
| 223 | mod blockdsp; |
| 224 | |
| 225 | #[cfg(feature="decoder_clearvideo")] |
| 226 | mod clearvideo; |
| 227 | #[cfg(feature="decoder_gdvvid")] |
| 228 | mod gremlinvideo; |
| 229 | #[cfg(any(feature="decoder_indeo2", feature="decoder_indeo3", feature="decoder_indeo4", feature="decoder_indeo5", feature="decoder_imc"))] |
| 230 | mod indeo; |
| 231 | #[cfg(feature="h263")] |
| 232 | mod h263; |
| 233 | |
| 234 | #[cfg(feature="decoder_pcm")] |
| 235 | mod pcm; |
| 236 | |
| 237 | const DECODERS: &[DecoderInfo] = &[ |
| 238 | #[cfg(feature="decoder_clearvideo")] |
| 239 | DecoderInfo { name: "clearvideo", get_decoder: clearvideo::get_decoder }, |
| 240 | #[cfg(feature="decoder_clearvideo")] |
| 241 | DecoderInfo { name: "clearvideo_rm", get_decoder: clearvideo::get_decoder_rm }, |
| 242 | #[cfg(feature="decoder_gdvvid")] |
| 243 | DecoderInfo { name: "gdv-video", get_decoder: gremlinvideo::get_decoder }, |
| 244 | #[cfg(feature="decoder_indeo2")] |
| 245 | DecoderInfo { name: "indeo2", get_decoder: indeo::indeo2::get_decoder }, |
| 246 | #[cfg(feature="decoder_indeo3")] |
| 247 | DecoderInfo { name: "indeo3", get_decoder: indeo::indeo3::get_decoder }, |
| 248 | #[cfg(feature="decoder_indeo4")] |
| 249 | DecoderInfo { name: "indeo4", get_decoder: indeo::indeo4::get_decoder }, |
| 250 | #[cfg(feature="decoder_indeo5")] |
| 251 | DecoderInfo { name: "indeo5", get_decoder: indeo::indeo5::get_decoder }, |
| 252 | #[cfg(feature="decoder_intel263")] |
| 253 | DecoderInfo { name: "intel263", get_decoder: h263::intel263::get_decoder }, |
| 254 | #[cfg(feature="decoder_realvideo1")] |
| 255 | DecoderInfo { name: "realvideo1", get_decoder: h263::rv10::get_decoder }, |
| 256 | #[cfg(feature="decoder_realvideo2")] |
| 257 | DecoderInfo { name: "realvideo2", get_decoder: h263::rv20::get_decoder }, |
| 258 | |
| 259 | #[cfg(feature="decoder_pcm")] |
| 260 | DecoderInfo { name: "pcm", get_decoder: pcm::get_decoder }, |
| 261 | #[cfg(feature="decoder_imc")] |
| 262 | DecoderInfo { name: "imc", get_decoder: indeo::imc::get_decoder_imc }, |
| 263 | #[cfg(feature="decoder_imc")] |
| 264 | DecoderInfo { name: "iac", get_decoder: indeo::imc::get_decoder_iac }, |
| 265 | ]; |
| 266 | |
| 267 | pub fn find_decoder(name: &str) -> Option<fn () -> Box<NADecoder>> { |
| 268 | for &dec in DECODERS { |
| 269 | if dec.name == name { |
| 270 | return Some(dec.get_decoder); |
| 271 | } |
| 272 | } |
| 273 | None |
| 274 | } |