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Commit | Line | Data |
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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 | } |