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