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1 | use std::fmt; | |
2 | ||
3 | #[derive(Debug,Clone,Copy)] | |
4 | #[allow(dead_code)] | |
5 | pub enum CodecType { | |
6 | Video, | |
7 | Audio, | |
8 | Subtitles, | |
9 | Data, | |
10 | None, | |
11 | } | |
12 | ||
13 | impl fmt::Display for CodecType { | |
14 | fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { | |
15 | match *self { | |
16 | CodecType::Video => write!(f, "Video"), | |
17 | CodecType::Audio => write!(f, "Audio"), | |
18 | CodecType::Subtitles => write!(f, "Subtitles"), | |
19 | CodecType::Data => write!(f, "Data"), | |
20 | CodecType::None => write!(f, "-"), | |
21 | } | |
22 | } | |
23 | } | |
24 | ||
25 | const CODEC_CAP_INTRAONLY:u32 = 0x000001; | |
26 | const CODEC_CAP_LOSSLESS:u32 = 0x000002; | |
27 | const CODEC_CAP_REORDER:u32 = 0x000004; | |
28 | const CODEC_CAP_HYBRID:u32 = 0x000008; | |
29 | const CODEC_CAP_SCALABLE:u32 = 0x000010; | |
30 | ||
31 | pub struct CodecDescription { | |
32 | name: &'static str, | |
33 | fname: &'static str, | |
34 | ctype: CodecType, | |
35 | caps: u32, | |
36 | } | |
37 | ||
38 | impl CodecDescription { | |
39 | pub fn get_name(&self) -> &'static str { self.name } | |
40 | pub fn get_full_name(&self) -> &'static str { self.fname } | |
41 | pub fn get_codec_type(&self) -> CodecType { self.ctype } | |
42 | pub fn is_intraonly(&self) -> bool { (self.caps & CODEC_CAP_INTRAONLY) != 0 } | |
43 | pub fn is_lossless(&self) -> bool { (self.caps & CODEC_CAP_LOSSLESS) != 0 } | |
44 | pub fn has_reorder(&self) -> bool { (self.caps & CODEC_CAP_REORDER) != 0 } | |
45 | pub fn is_hybrid(&self) -> bool { (self.caps & CODEC_CAP_HYBRID) != 0 } | |
46 | pub fn is_scalable(&self) -> bool { (self.caps & CODEC_CAP_SCALABLE) != 0 } | |
47 | } | |
48 | ||
49 | impl fmt::Display for CodecDescription { | |
50 | fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { | |
51 | let mut out = format!("{}", self.fname); | |
52 | if self.caps != 0 { | |
53 | let mut capfmt = "".to_string(); | |
54 | if (self.caps & CODEC_CAP_INTRAONLY) != 0 { | |
55 | capfmt = format!("{} Intra-only", capfmt); | |
56 | } | |
57 | if (self.caps & CODEC_CAP_LOSSLESS) != 0 { | |
58 | capfmt = format!("{} Lossless", capfmt); | |
59 | } | |
60 | if (self.caps & CODEC_CAP_REORDER) != 0 { | |
61 | capfmt = format!("{} Frame reorder", capfmt); | |
62 | } | |
63 | if (self.caps & CODEC_CAP_HYBRID) != 0 { | |
64 | capfmt = format!("{} Can be lossy and lossless", capfmt); | |
65 | } | |
66 | if (self.caps & CODEC_CAP_SCALABLE) != 0 { | |
67 | capfmt = format!("{} Scalable", capfmt); | |
68 | } | |
69 | out = format!("{} ({})", out, capfmt); | |
70 | } | |
71 | write!(f, "{}", out) | |
72 | } | |
73 | } | |
74 | ||
75 | macro_rules! desc { | |
76 | (video; $n:expr, $fn:expr) => ({ | |
77 | CodecDescription{ name: $n, fname: $fn, ctype: CodecType::Video, | |
78 | caps: 0 } | |
79 | }); | |
80 | (video; $n:expr, $fn:expr, $c:expr) => ({ | |
81 | CodecDescription{ name: $n, fname: $fn, ctype: CodecType::Video, | |
82 | caps: $c } | |
83 | }); | |
84 | (video-ll; $n:expr, $fn:expr) => ({ | |
85 | CodecDescription{ name: $n, fname: $fn, ctype: CodecType::Video, | |
86 | caps: CODEC_CAP_LOSSLESS | CODEC_CAP_INTRAONLY } | |
87 | }); | |
88 | (video-llp; $n:expr, $fn:expr) => ({ | |
89 | CodecDescription{ name: $n, fname: $fn, ctype: CodecType::Video, | |
90 | caps: CODEC_CAP_LOSSLESS } | |
91 | }); | |
92 | (video-im; $n:expr, $fn:expr) => ({ | |
93 | CodecDescription{ name: $n, fname: $fn, ctype: CodecType::Video, | |
94 | caps: CODEC_CAP_INTRAONLY } | |
95 | }); | |
96 | (video-modern; $n:expr, $fn:expr) => ({ | |
97 | CodecDescription{ name: $n, fname: $fn, ctype: CodecType::Video, | |
98 | caps: CODEC_CAP_REORDER | CODEC_CAP_HYBRID } | |
99 | }); | |
100 | (audio; $n:expr, $fn:expr) => ({ | |
101 | CodecDescription{ name: $n, fname: $fn, ctype: CodecType::Audio, | |
102 | caps: 0 } | |
103 | }); | |
104 | (audio-ll; $n:expr, $fn:expr) => ({ | |
105 | CodecDescription{ name: $n, fname: $fn, ctype: CodecType::Audio, | |
106 | caps: CODEC_CAP_LOSSLESS | CODEC_CAP_INTRAONLY } | |
107 | }); | |
108 | } | |
109 | ||
110 | pub fn get_codec_description(name: &str) -> Option<&'static CodecDescription> { | |
111 | for i in 0..CODEC_REGISTER.len() { | |
112 | if CODEC_REGISTER[i].name == name { | |
113 | return Some(&CODEC_REGISTER[i]); | |
114 | } | |
115 | } | |
116 | None | |
117 | } | |
118 | ||
119 | static CODEC_REGISTER: &'static [CodecDescription] = &[ | |
120 | desc!(video-im; "indeo1", "Intel Raw IF09"), | |
121 | desc!(video-im; "indeo2", "Intel Indeo 2"), | |
122 | desc!(video; "indeo3", "Intel Indeo 3"), | |
123 | desc!(video; "indeo4", "Intel Indeo 4", CODEC_CAP_REORDER | CODEC_CAP_SCALABLE), | |
124 | desc!(video; "indeo5", "Intel Indeo 5", CODEC_CAP_REORDER | CODEC_CAP_SCALABLE), | |
125 | desc!(audio; "iac", "Intel Indeo audio"), | |
126 | desc!(audio; "imc", "Intel Music Coder"), | |
127 | ]; | |
128 | ||
129 | static AVI_VIDEO_CODEC_REGISTER: &'static [(&[u8;4], &str)] = &[ | |
130 | (b"IF09", "indeo1"), | |
131 | (b"RT21", "indeo2"), | |
132 | (b"IV31", "indeo3"), | |
133 | (b"IV32", "indeo3"), | |
134 | (b"IV41", "indeo4"), | |
135 | (b"IV50", "indeo5"), | |
136 | ]; | |
137 | ||
138 | static WAV_CODEC_REGISTER: &'static [(u16, &str)] = &[ | |
139 | (0x0000, "pcm"), | |
140 | (0x0001, "pcm"), | |
141 | (0x0003, "pcm"), | |
142 | (0x0401, "imc"), | |
143 | (0x0402, "iac"), | |
144 | ]; | |
145 | ||
146 | pub fn find_codec_from_avi_fourcc(fcc: &[u8;4]) -> Option<&'static str> { | |
147 | for i in 0..AVI_VIDEO_CODEC_REGISTER.len() { | |
148 | let (fourcc, name) = AVI_VIDEO_CODEC_REGISTER[i]; | |
149 | if fourcc == fcc { return Some(name); } | |
150 | } | |
151 | None | |
152 | } | |
153 | ||
154 | pub fn find_codec_from_wav_twocc(tcc: u16) -> Option<&'static str> { | |
155 | for i in 0..WAV_CODEC_REGISTER.len() { | |
156 | let (twocc, name) = WAV_CODEC_REGISTER[i]; | |
157 | if twocc == tcc { return Some(name); } | |
158 | } | |
159 | None | |
160 | } | |
161 | ||
162 | #[cfg(test)] | |
163 | mod test { | |
164 | use super::*; | |
165 | ||
166 | #[test] | |
167 | fn test_register() { | |
168 | let c1 = find_codec_from_avi_fourcc(b"IV41").unwrap(); | |
169 | let c2 = find_codec_from_wav_twocc(0x401).unwrap(); | |
170 | println!("found {} and {}", c1, c2); | |
171 | let cd1 = get_codec_description(c1).unwrap(); | |
172 | let cd2 = get_codec_description(c2).unwrap(); | |
173 | println!("got {} and {}", cd1, cd2); | |
174 | } | |
175 | } |