| 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; "video-indeo1", "Intel Raw IF09"), |
| 121 | desc!(video-im; "video-indeo2", "Intel Indeo 2"), |
| 122 | desc!(video; "video-indeo3", "Intel Indeo 3"), |
| 123 | desc!(video; "video-indeo4", "Intel Indeo 4", CODEC_CAP_REORDER | CODEC_CAP_SCALABLE), |
| 124 | desc!(video; "video-indeo5", "Intel Indeo 5", CODEC_CAP_REORDER | CODEC_CAP_SCALABLE), |
| 125 | desc!(audio; "audio-iac", "Intel Indeo audio"), |
| 126 | desc!(audio; "audio-imc", "Intel Music Coder"), |
| 127 | ]; |
| 128 | |
| 129 | static AVI_VIDEO_CODEC_REGISTER: &'static [(&[u8;4], &str)] = &[ |
| 130 | (b"IF09", "video-indeo1"), |
| 131 | (b"RT21", "video-indeo2"), |
| 132 | (b"IV31", "video-indeo3"), |
| 133 | (b"IV32", "video-indeo3"), |
| 134 | (b"IV41", "video-indeo4"), |
| 135 | (b"IV50", "video-indeo5"), |
| 136 | ]; |
| 137 | |
| 138 | static WAV_CODEC_REGISTER: &'static [(u16, &str)] = &[ |
| 139 | (0x0000, "audio-pcm"), |
| 140 | (0x0001, "audio-pcm"), |
| 141 | (0x0003, "audio-pcm"), |
| 142 | (0x0401, "audio-imc"), |
| 143 | (0x0402, "audio-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 | } |