| 1 | use nihav_core::codecs::*; |
| 2 | use nihav_core::io::byteio::*; |
| 3 | use nihav_core::io::bitreader::*; |
| 4 | |
| 5 | use super::apepred::*; |
| 6 | use super::apereader::*; |
| 7 | |
| 8 | struct APEDecoder { |
| 9 | ainfo: NAAudioInfo, |
| 10 | chmap: NAChannelMap, |
| 11 | version: u16, |
| 12 | decode_mono: fn(&mut Coder, &mut [i32]) -> DecoderResult<()>, |
| 13 | decode_stereo: fn(&mut Coder, &mut [i32], &mut [i32]) -> DecoderResult<()>, |
| 14 | is_stereo: bool, |
| 15 | left: Vec<i32>, |
| 16 | right: Vec<i32>, |
| 17 | fmode: FilterMode, |
| 18 | data: Vec<u8>, |
| 19 | blocksperframe: usize, |
| 20 | } |
| 21 | |
| 22 | impl APEDecoder { |
| 23 | fn new() -> Self { |
| 24 | Self { |
| 25 | ainfo: NAAudioInfo::new(0, 1, SND_S16P_FORMAT, 0), |
| 26 | chmap: NAChannelMap::new(), |
| 27 | version: 0, |
| 28 | decode_mono: decode_mono_dummy, |
| 29 | decode_stereo: decode_stereo_dummy, |
| 30 | is_stereo: false, |
| 31 | left: Vec::new(), |
| 32 | right: Vec::new(), |
| 33 | fmode: FilterMode::None, |
| 34 | data: Vec::new(), |
| 35 | blocksperframe: 0, |
| 36 | } |
| 37 | } |
| 38 | } |
| 39 | |
| 40 | impl NADecoder for APEDecoder { |
| 41 | fn init(&mut self, _supp: &mut NADecoderSupport, info: NACodecInfoRef) -> DecoderResult<()> { |
| 42 | if let NACodecTypeInfo::Audio(_ainfo) = info.get_properties() { |
| 43 | if let Some(buf) = info.get_extradata() { |
| 44 | let mut mr = MemoryReader::new_read(&buf); |
| 45 | let mut br = ByteReader::new(&mut mr); |
| 46 | let version = br.read_u16le()?; |
| 47 | let compression = br.read_u16le()?; |
| 48 | let _flags = br.read_u16le()?; |
| 49 | let channels = br.read_byte()?; |
| 50 | let bits = br.read_byte()?; |
| 51 | let srate = br.read_u32le()?; |
| 52 | let blocksperframe = br.read_u32le()? as usize; |
| 53 | |
| 54 | validate!(channels > 0); |
| 55 | validate!(bits > 0 && bits <= 32); |
| 56 | validate!((compression % 1000) == 0 && compression > 0 && compression <= 5000); |
| 57 | validate!(compression < 5000 || version >= 3930); |
| 58 | if bits != 16 { |
| 59 | return Err(DecoderError::NotImplemented); |
| 60 | } |
| 61 | if version > 3990 { |
| 62 | return Err(DecoderError::NotImplemented); |
| 63 | } |
| 64 | |
| 65 | self.version = version; |
| 66 | self.blocksperframe = blocksperframe; |
| 67 | self.is_stereo = channels == 2; |
| 68 | self.left.resize(blocksperframe, 0); |
| 69 | if self.is_stereo { |
| 70 | self.right.resize(blocksperframe, 0); |
| 71 | } |
| 72 | |
| 73 | self.decode_mono = if version >= 3990 { |
| 74 | decode_mono_3990 |
| 75 | } else if version >= 3910 { |
| 76 | decode_mono_3910 |
| 77 | } else if version >= 3900 { |
| 78 | decode_mono_3900 |
| 79 | } else if version >= 3890 { |
| 80 | decode_mono_3890 |
| 81 | } else if version >= 3860 { |
| 82 | decode_mono_3860 |
| 83 | } else { |
| 84 | decode_mono_0000 |
| 85 | }; |
| 86 | self.decode_stereo = if version >= 3990 { |
| 87 | decode_stereo_3990 |
| 88 | } else if version >= 3930 { |
| 89 | decode_stereo_3930 |
| 90 | } else if version >= 3910 { |
| 91 | decode_stereo_3910 |
| 92 | } else if version >= 3900 { |
| 93 | decode_stereo_3900 |
| 94 | } else if version >= 3890 { |
| 95 | decode_stereo_3890 |
| 96 | } else if version >= 3860 { |
| 97 | decode_stereo_3860 |
| 98 | } else { |
| 99 | decode_stereo_0000 |
| 100 | }; |
| 101 | self.fmode = FilterMode::new(version, compression); |
| 102 | |
| 103 | self.chmap = if channels == 1 { |
| 104 | NAChannelMap::from_str("C").unwrap() |
| 105 | } else if channels == 2 { |
| 106 | NAChannelMap::from_str("L,R").unwrap() |
| 107 | } else { |
| 108 | return Err(DecoderError::NotImplemented); |
| 109 | }; |
| 110 | self.ainfo = NAAudioInfo::new(srate, channels as u8, SND_S16P_FORMAT, 4602); |
| 111 | Ok(()) |
| 112 | } else { |
| 113 | Err(DecoderError::InvalidData) |
| 114 | } |
| 115 | } else { |
| 116 | Err(DecoderError::InvalidData) |
| 117 | } |
| 118 | } |
| 119 | fn decode(&mut self, _supp: &mut NADecoderSupport, pkt: &NAPacket) -> DecoderResult<NAFrameRef> { |
| 120 | let info = pkt.get_stream().get_info(); |
| 121 | if let NACodecTypeInfo::Audio(_) = info.get_properties() { |
| 122 | let pktbuf = pkt.get_buffer(); |
| 123 | validate!(pktbuf.len() > 9); |
| 124 | |
| 125 | let nblocks = read_u32le(&pktbuf[0..])? as usize; |
| 126 | validate!(nblocks > 0); |
| 127 | let bits = u32::from(pktbuf[4]); |
| 128 | validate!(bits < 32); |
| 129 | self.data.clear(); |
| 130 | self.data.reserve((pktbuf.len() & !3) + 2); |
| 131 | for word in pktbuf[8..].chunks_exact(4) { |
| 132 | self.data.push(word[3]); |
| 133 | self.data.push(word[2]); |
| 134 | self.data.push(word[1]); |
| 135 | self.data.push(word[0]); |
| 136 | } |
| 137 | if self.version < 3950 { |
| 138 | self.data.push(0); |
| 139 | self.data.push(0); |
| 140 | } |
| 141 | |
| 142 | let (mut coder, ref_crc, fflags) = if self.version < 3900 { |
| 143 | let mut br = BitReader::new(&self.data, BitReaderMode::BE); |
| 144 | br.skip(bits)?; |
| 145 | let mut crc = br.read(32)?; |
| 146 | let fflags = if self.version >= 3830 && (crc & 0x80000000) != 0 { |
| 147 | crc ^= 0x80000000; |
| 148 | br.read(32)? |
| 149 | } else { |
| 150 | 0 |
| 151 | }; |
| 152 | (Coder::Rice(RiceCoder::new(br)), crc, fflags) |
| 153 | } else { |
| 154 | let mut boff = (bits / 8) as usize; |
| 155 | let mut crc = read_u32be(&self.data[boff..])?; |
| 156 | boff += 4; |
| 157 | let fflags = if (crc & 0x80000000) != 0 { |
| 158 | crc ^= 0x80000000; |
| 159 | let flg = read_u32be(&self.data[boff..])?; |
| 160 | boff += 4; |
| 161 | flg |
| 162 | } else { |
| 163 | 0 |
| 164 | }; |
| 165 | // it ignores first byte anyway |
| 166 | (Coder::Range(RangeCoder::new(&self.data[boff + 1..])), crc, fflags) |
| 167 | }; |
| 168 | self.left.resize(nblocks, 0); |
| 169 | if self.is_stereo { |
| 170 | self.right.resize(nblocks, 0); |
| 171 | } |
| 172 | if (!self.is_stereo && (fflags & 1) == 0) || (self.is_stereo && (fflags & 3) != 3) { |
| 173 | if !self.is_stereo || (fflags & 4) != 0 { |
| 174 | (self.decode_mono)(&mut coder, &mut self.left)?; |
| 175 | self.fmode.filter_mono(&mut self.left); |
| 176 | |
| 177 | if (fflags & 4) != 0 { |
| 178 | self.right.copy_from_slice(&self.left); |
| 179 | } |
| 180 | } else { |
| 181 | (self.decode_stereo)(&mut coder, &mut self.left, &mut self.right)?; |
| 182 | self.fmode.filter_stereo(&mut self.left, &mut self.right); |
| 183 | } |
| 184 | } else { |
| 185 | for l in self.left.iter_mut() { *l = 0; } |
| 186 | if self.is_stereo { |
| 187 | for r in self.right.iter_mut() { *r = 0; } |
| 188 | } |
| 189 | } |
| 190 | |
| 191 | if self.version >= 0x3990 || nblocks == self.blocksperframe { |
| 192 | let mut crc = 0xFFFFFFFF; |
| 193 | if !self.is_stereo { |
| 194 | for el in self.left.iter() { |
| 195 | let byte1 = *el as u8; |
| 196 | let byte0 = (*el >> 8) as u8; |
| 197 | crc = (crc >> 8) ^ CRC32_TAB[((crc as u8) ^ byte1) as usize]; |
| 198 | crc = (crc >> 8) ^ CRC32_TAB[((crc as u8) ^ byte0) as usize]; |
| 199 | } |
| 200 | } else { |
| 201 | for (l, r) in self.left.iter().zip(self.right.iter()) { |
| 202 | let byte1 = *l as u8; |
| 203 | let byte0 = (*l >> 8) as u8; |
| 204 | crc = (crc >> 8) ^ CRC32_TAB[((crc as u8) ^ byte1) as usize]; |
| 205 | crc = (crc >> 8) ^ CRC32_TAB[((crc as u8) ^ byte0) as usize]; |
| 206 | let byte1 = *r as u8; |
| 207 | let byte0 = (*r >> 8) as u8; |
| 208 | crc = (crc >> 8) ^ CRC32_TAB[((crc as u8) ^ byte1) as usize]; |
| 209 | crc = (crc >> 8) ^ CRC32_TAB[((crc as u8) ^ byte0) as usize]; |
| 210 | } |
| 211 | } |
| 212 | crc = !crc; |
| 213 | if self.version >= 3830 { |
| 214 | crc >>= 1; |
| 215 | } |
| 216 | if crc != ref_crc { |
| 217 | return Err(DecoderError::ChecksumError); |
| 218 | } |
| 219 | } |
| 220 | |
| 221 | let abuf = alloc_audio_buffer(self.ainfo, nblocks, self.chmap.clone())?; |
| 222 | let mut adata = abuf.get_abuf_i16().unwrap(); |
| 223 | let off1 = adata.get_offset(1); |
| 224 | let dst = adata.get_data_mut().unwrap(); |
| 225 | let (left, right) = dst.split_at_mut(off1); |
| 226 | for (dst, src) in left.iter_mut().zip(self.left.iter()) { |
| 227 | *dst = *src as i16; |
| 228 | } |
| 229 | if self.is_stereo { |
| 230 | for (dst, src) in right.iter_mut().zip(self.right.iter()) { |
| 231 | *dst = *src as i16; |
| 232 | } |
| 233 | } |
| 234 | |
| 235 | let mut frm = NAFrame::new_from_pkt(pkt, info, abuf); |
| 236 | frm.set_duration(Some(nblocks as u64)); |
| 237 | Ok(frm.into_ref()) |
| 238 | } else { |
| 239 | Err(DecoderError::InvalidData) |
| 240 | } |
| 241 | } |
| 242 | fn flush(&mut self) { |
| 243 | } |
| 244 | } |
| 245 | |
| 246 | impl NAOptionHandler for APEDecoder { |
| 247 | fn get_supported_options(&self) -> &[NAOptionDefinition] { &[] } |
| 248 | fn set_options(&mut self, _options: &[NAOption]) { } |
| 249 | fn query_option_value(&self, _name: &str) -> Option<NAValue> { None } |
| 250 | } |
| 251 | |
| 252 | pub fn get_decoder() -> Box<dyn NADecoder + Send> { |
| 253 | Box::new(APEDecoder::new()) |
| 254 | } |
| 255 | |
| 256 | #[cfg(test)] |
| 257 | mod test { |
| 258 | use nihav_core::codecs::RegisteredDecoders; |
| 259 | use nihav_core::demuxers::RegisteredDemuxers; |
| 260 | use nihav_codec_support::test::dec_video::*; |
| 261 | use crate::llaudio_register_all_decoders; |
| 262 | use crate::llaudio_register_all_demuxers; |
| 263 | // samples from Libav test suite |
| 264 | #[test] |
| 265 | fn test_ape_3990() { |
| 266 | let mut dmx_reg = RegisteredDemuxers::new(); |
| 267 | llaudio_register_all_demuxers(&mut dmx_reg); |
| 268 | let mut dec_reg = RegisteredDecoders::new(); |
| 269 | llaudio_register_all_decoders(&mut dec_reg); |
| 270 | |
| 271 | test_decoding("ape", "ape", "assets/LLaudio/ape/luckynight.ape", Some(3), &dmx_reg, &dec_reg, |
| 272 | ExpectedTestResult::MD5([0x569e002b, 0xd93772a9, 0x1cfd81cd, 0xad81319a])); |
| 273 | } |
| 274 | #[test] |
| 275 | fn test_ape_3940() { |
| 276 | let mut dmx_reg = RegisteredDemuxers::new(); |
| 277 | llaudio_register_all_demuxers(&mut dmx_reg); |
| 278 | let mut dec_reg = RegisteredDecoders::new(); |
| 279 | llaudio_register_all_decoders(&mut dec_reg); |
| 280 | |
| 281 | test_decoding("ape", "ape", "assets/LLaudio/ape/luckynight-mac394b1-c4000.ape", Some(1), &dmx_reg, &dec_reg, |
| 282 | ExpectedTestResult::MD5([0xeb55ece6, 0xe5f22759, 0xd0696dd6, 0x84ae9a6c])); |
| 283 | } |
| 284 | #[test] |
| 285 | fn test_ape_3920() { |
| 286 | let mut dmx_reg = RegisteredDemuxers::new(); |
| 287 | llaudio_register_all_demuxers(&mut dmx_reg); |
| 288 | let mut dec_reg = RegisteredDecoders::new(); |
| 289 | llaudio_register_all_decoders(&mut dec_reg); |
| 290 | |
| 291 | test_decoding("ape", "ape", "assets/LLaudio/ape/luckynight-mac392b2-c4000.ape", Some(1), &dmx_reg, &dec_reg, |
| 292 | ExpectedTestResult::MD5([0xeb55ece6, 0xe5f22759, 0xd0696dd6, 0x84ae9a6c])); |
| 293 | } |
| 294 | #[test] |
| 295 | fn test_ape_3910() { |
| 296 | let mut dmx_reg = RegisteredDemuxers::new(); |
| 297 | llaudio_register_all_demuxers(&mut dmx_reg); |
| 298 | let mut dec_reg = RegisteredDecoders::new(); |
| 299 | llaudio_register_all_decoders(&mut dec_reg); |
| 300 | |
| 301 | test_decoding("ape", "ape", "assets/LLaudio/ape/luckynight-mac391b1-c4000.ape", Some(1), &dmx_reg, &dec_reg, |
| 302 | ExpectedTestResult::MD5([0xeb55ece6, 0xe5f22759, 0xd0696dd6, 0x84ae9a6c])); |
| 303 | } |
| 304 | #[test] |
| 305 | fn test_ape_3890() { |
| 306 | let mut dmx_reg = RegisteredDemuxers::new(); |
| 307 | llaudio_register_all_demuxers(&mut dmx_reg); |
| 308 | let mut dec_reg = RegisteredDecoders::new(); |
| 309 | llaudio_register_all_decoders(&mut dec_reg); |
| 310 | |
| 311 | test_decoding("ape", "ape", "assets/LLaudio/ape/luckynight-mac389b1-c4000.ape", Some(1), &dmx_reg, &dec_reg, |
| 312 | ExpectedTestResult::MD5([0xeb55ece6, 0xe5f22759, 0xd0696dd6, 0x84ae9a6c])); |
| 313 | } |
| 314 | #[test] |
| 315 | fn test_ape_3880() { |
| 316 | let mut dmx_reg = RegisteredDemuxers::new(); |
| 317 | llaudio_register_all_demuxers(&mut dmx_reg); |
| 318 | let mut dec_reg = RegisteredDecoders::new(); |
| 319 | llaudio_register_all_decoders(&mut dec_reg); |
| 320 | |
| 321 | test_decoding("ape", "ape", "assets/LLaudio/ape/luckynight-mac388-c4000.ape", Some(1), &dmx_reg, &dec_reg, |
| 322 | ExpectedTestResult::MD5([0xeb55ece6, 0xe5f22759, 0xd0696dd6, 0x84ae9a6c])); |
| 323 | } |
| 324 | #[test] |
| 325 | fn test_ape_3800() { |
| 326 | let mut dmx_reg = RegisteredDemuxers::new(); |
| 327 | llaudio_register_all_demuxers(&mut dmx_reg); |
| 328 | let mut dec_reg = RegisteredDecoders::new(); |
| 329 | llaudio_register_all_decoders(&mut dec_reg); |
| 330 | |
| 331 | test_decoding("ape", "ape", "assets/LLaudio/ape/luckynight-mac380-c4000.ape", Some(1), &dmx_reg, &dec_reg, |
| 332 | ExpectedTestResult::MD5([0xeb55ece6, 0xe5f22759, 0xd0696dd6, 0x84ae9a6c])); |
| 333 | } |
| 334 | } |
| 335 | |
| 336 | const CRC32_TAB: [u32; 256] = [ |
| 337 | 0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA, 0x076DC419, 0x706AF48F, 0xE963A535, 0x9E6495A3, |
| 338 | 0x0EDB8832, 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988, 0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91, |
| 339 | 0x1DB71064, 0x6AB020F2, 0xF3B97148, 0x84BE41DE, 0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7, |
| 340 | 0x136C9856, 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC, 0x14015C4F, 0x63066CD9, 0xFA0F3D63, 0x8D080DF5, |
| 341 | 0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172, 0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B, |
| 342 | 0x35B5A8FA, 0x42B2986C, 0xDBBBC9D6, 0xACBCF940, 0x32D86CE3, 0x45DF5C75, 0xDCD60DCF, 0xABD13D59, |
| 343 | 0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116, 0x21B4F4B5, 0x56B3C423, 0xCFBA9599, 0xB8BDA50F, |
| 344 | 0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924, 0x2F6F7C87, 0x58684C11, 0xC1611DAB, 0xB6662D3D, |
| 345 | 0x76DC4190, 0x01DB7106, 0x98D220BC, 0xEFD5102A, 0x71B18589, 0x06B6B51F, 0x9FBFE4A5, 0xE8B8D433, |
| 346 | 0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818, 0x7F6A0DBB, 0x086D3D2D, 0x91646C97, 0xE6635C01, |
| 347 | 0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E, 0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457, |
| 348 | 0x65B0D9C6, 0x12B7E950, 0x8BBEB8EA, 0xFCB9887C, 0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65, |
| 349 | 0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2, 0x4ADFA541, 0x3DD895D7, 0xA4D1C46D, 0xD3D6F4FB, |
| 350 | 0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0, 0x44042D73, 0x33031DE5, 0xAA0A4C5F, 0xDD0D7CC9, |
| 351 | 0x5005713C, 0x270241AA, 0xBE0B1010, 0xC90C2086, 0x5768B525, 0x206F85B3, 0xB966D409, 0xCE61E49F, |
| 352 | 0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4, 0x59B33D17, 0x2EB40D81, 0xB7BD5C3B, 0xC0BA6CAD, |
| 353 | 0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A, 0xEAD54739, 0x9DD277AF, 0x04DB2615, 0x73DC1683, |
| 354 | 0xE3630B12, 0x94643B84, 0x0D6D6A3E, 0x7A6A5AA8, 0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1, |
| 355 | 0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE, 0xF762575D, 0x806567CB, 0x196C3671, 0x6E6B06E7, |
| 356 | 0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC, 0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5, |
| 357 | 0xD6D6A3E8, 0xA1D1937E, 0x38D8C2C4, 0x4FDFF252, 0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B, |
| 358 | 0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, 0x41047A60, 0xDF60EFC3, 0xA867DF55, 0x316E8EEF, 0x4669BE79, |
| 359 | 0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236, 0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F, |
| 360 | 0xC5BA3BBE, 0xB2BD0B28, 0x2BB45A92, 0x5CB36A04, 0xC2D7FFA7, 0xB5D0CF31, 0x2CD99E8B, 0x5BDEAE1D, |
| 361 | 0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A, 0x9C0906A9, 0xEB0E363F, 0x72076785, 0x05005713, |
| 362 | 0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38, 0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, 0x0BDBDF21, |
| 363 | 0x86D3D2D4, 0xF1D4E242, 0x68DDB3F8, 0x1FDA836E, 0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777, |
| 364 | 0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C, 0x8F659EFF, 0xF862AE69, 0x616BFFD3, 0x166CCF45, |
| 365 | 0xA00AE278, 0xD70DD2EE, 0x4E048354, 0x3903B3C2, 0xA7672661, 0xD06016F7, 0x4969474D, 0x3E6E77DB, |
| 366 | 0xAED16A4A, 0xD9D65ADC, 0x40DF0B66, 0x37D83BF0, 0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9, |
| 367 | 0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6, 0xBAD03605, 0xCDD70693, 0x54DE5729, 0x23D967BF, |
| 368 | 0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94, 0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D, |
| 369 | ]; |