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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<NAVideoBufferRef<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: NAVideoBufferRef<u8>) { | |
58 | self.lastframe = Some(buf); | |
59 | } | |
60 | #[allow(dead_code)] | |
61 | pub fn clone_ref(&mut self) -> Option<NAVideoBufferRef<u8>> { | |
62 | if let Some(ref mut frm) = self.lastframe { | |
63 | let newfrm = frm.copy_buffer(); | |
64 | *frm = newfrm.clone().into_ref(); | |
65 | Some(newfrm.into_ref()) | |
66 | } else { | |
67 | None | |
68 | } | |
69 | } | |
70 | #[allow(dead_code)] | |
71 | pub fn get_output_frame(&mut self) -> Option<NAVideoBufferRef<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<NAVideoBufferRef<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: NAVideoBufferRef<u8>) { | |
95 | self.lastframe = Some(buf); | |
96 | } | |
97 | #[allow(dead_code)] | |
98 | pub fn get_ref(&mut self) -> Option<NAVideoBufferRef<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<NAVideoBufferRef<u8>>, | |
114 | nextframe: Option<NAVideoBufferRef<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: NAVideoBufferRef<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<NAVideoBufferRef<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<NAVideoBufferRef<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<NAVideoBufferRef<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<NAVideoBufferRef<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,Default,PartialEq)] | |
166 | pub struct MV { | |
167 | pub x: i16, | |
168 | pub y: i16, | |
169 | } | |
170 | ||
171 | #[allow(clippy::many_single_char_names)] | |
172 | #[allow(clippy::collapsible_if)] | |
173 | impl MV { | |
174 | pub fn new(x: i16, y: i16) -> Self { MV{ x, y } } | |
175 | pub fn pred(a: MV, b: MV, c: MV) -> Self { | |
176 | let x; | |
177 | if a.x < b.x { | |
178 | if b.x < c.x { | |
179 | x = b.x; | |
180 | } else { | |
181 | if a.x < c.x { x = c.x; } else { x = a.x; } | |
182 | } | |
183 | } else { | |
184 | if b.x < c.x { | |
185 | if a.x < c.x { x = a.x; } else { x = c.x; } | |
186 | } else { | |
187 | x = b.x; | |
188 | } | |
189 | } | |
190 | let y; | |
191 | if a.y < b.y { | |
192 | if b.y < c.y { | |
193 | y = b.y; | |
194 | } else { | |
195 | if a.y < c.y { y = c.y; } else { y = a.y; } | |
196 | } | |
197 | } else { | |
198 | if b.y < c.y { | |
199 | if a.y < c.y { y = a.y; } else { y = c.y; } | |
200 | } else { | |
201 | y = b.y; | |
202 | } | |
203 | } | |
204 | MV { x, y } | |
205 | } | |
206 | } | |
207 | ||
208 | pub const ZERO_MV: MV = MV { x: 0, y: 0 }; | |
209 | ||
210 | impl Add for MV { | |
211 | type Output = MV; | |
212 | fn add(self, other: MV) -> MV { MV { x: self.x + other.x, y: self.y + other.y } } | |
213 | } | |
214 | ||
215 | impl AddAssign for MV { | |
216 | fn add_assign(&mut self, other: MV) { self.x += other.x; self.y += other.y; } | |
217 | } | |
218 | ||
219 | impl Sub for MV { | |
220 | type Output = MV; | |
221 | fn sub(self, other: MV) -> MV { MV { x: self.x - other.x, y: self.y - other.y } } | |
222 | } | |
223 | ||
224 | impl SubAssign for MV { | |
225 | fn sub_assign(&mut self, other: MV) { self.x -= other.x; self.y -= other.y; } | |
226 | } | |
227 | ||
228 | impl fmt::Display for MV { | |
229 | fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { | |
230 | write!(f, "{},{}", self.x, self.y) | |
231 | } | |
232 | } | |
233 | ||
234 | pub struct NADecoderSupport { | |
235 | pub pool_u8: NAVideoBufferPool<u8>, | |
236 | pub pool_u16: NAVideoBufferPool<u16>, | |
237 | pub pool_u32: NAVideoBufferPool<u32>, | |
238 | } | |
239 | ||
240 | impl NADecoderSupport { | |
241 | pub fn new() -> Self { | |
242 | Self { | |
243 | pool_u8: NAVideoBufferPool::new(0), | |
244 | pool_u16: NAVideoBufferPool::new(0), | |
245 | pool_u32: NAVideoBufferPool::new(0), | |
246 | } | |
247 | } | |
248 | } | |
249 | ||
250 | impl Default for NADecoderSupport { | |
251 | fn default() -> Self { Self::new() } | |
252 | } | |
253 | ||
254 | ||
255 | pub trait NADecoder { | |
256 | fn init(&mut self, supp: &mut NADecoderSupport, info: NACodecInfoRef) -> DecoderResult<()>; | |
257 | fn decode(&mut self, supp: &mut NADecoderSupport, pkt: &NAPacket) -> DecoderResult<NAFrameRef>; | |
258 | fn flush(&mut self); | |
259 | } | |
260 | ||
261 | #[derive(Clone,Copy)] | |
262 | pub struct DecoderInfo { | |
263 | pub name: &'static str, | |
264 | pub get_decoder: fn () -> Box<dyn NADecoder>, | |
265 | } | |
266 | ||
267 | #[cfg(any(feature="blockdsp"))] | |
268 | pub mod blockdsp; | |
269 | ||
270 | #[cfg(feature="h263")] | |
271 | pub mod h263; | |
272 | ||
273 | #[derive(Default)] | |
274 | pub struct RegisteredDecoders { | |
275 | decs: Vec<DecoderInfo>, | |
276 | } | |
277 | ||
278 | impl RegisteredDecoders { | |
279 | pub fn new() -> Self { | |
280 | Self { decs: Vec::new() } | |
281 | } | |
282 | pub fn add_decoder(&mut self, dec: DecoderInfo) { | |
283 | self.decs.push(dec); | |
284 | } | |
285 | pub fn find_decoder(&self, name: &str) -> Option<fn () -> Box<dyn NADecoder>> { | |
286 | for &dec in self.decs.iter() { | |
287 | if dec.name == name { | |
288 | return Some(dec.get_decoder); | |
289 | } | |
290 | } | |
291 | None | |
292 | } | |
293 | pub fn iter(&self) -> std::slice::Iter<DecoderInfo> { | |
294 | self.decs.iter() | |
295 | } | |
296 | } | |
297 | ||
298 | pub const ZIGZAG: [usize; 64] = [ | |
299 | 0, 1, 8, 16, 9, 2, 3, 10, | |
300 | 17, 24, 32, 25, 18, 11, 4, 5, | |
301 | 12, 19, 26, 33, 40, 48, 41, 34, | |
302 | 27, 20, 13, 6, 7, 14, 21, 28, | |
303 | 35, 42, 49, 56, 57, 50, 43, 36, | |
304 | 29, 22, 15, 23, 30, 37, 44, 51, | |
305 | 58, 59, 52, 45, 38, 31, 39, 46, | |
306 | 53, 60, 61, 54, 47, 55, 62, 63 | |
307 | ]; |