--- /dev/null
+use nihav_core::codecs::*;
+use nihav_core::io::byteio::*;
+use nihav_core::io::bitreader::*;
+
+use super::apepred::*;
+use super::apereader::*;
+
+struct APEDecoder {
+ ainfo: NAAudioInfo,
+ chmap: NAChannelMap,
+ version: u16,
+ decode_mono: fn(&mut Coder, &mut [i32]) -> DecoderResult<()>,
+ decode_stereo: fn(&mut Coder, &mut [i32], &mut [i32]) -> DecoderResult<()>,
+ is_stereo: bool,
+ left: Vec<i32>,
+ right: Vec<i32>,
+ fmode: FilterMode,
+ data: Vec<u8>,
+ blocksperframe: usize,
+}
+
+impl APEDecoder {
+ fn new() -> Self {
+ Self {
+ ainfo: NAAudioInfo::new(0, 1, SND_S16P_FORMAT, 0),
+ chmap: NAChannelMap::new(),
+ version: 0,
+ decode_mono: decode_mono_dummy,
+ decode_stereo: decode_stereo_dummy,
+ is_stereo: false,
+ left: Vec::new(),
+ right: Vec::new(),
+ fmode: FilterMode::None,
+ data: Vec::new(),
+ blocksperframe: 0,
+ }
+ }
+}
+
+impl NADecoder for APEDecoder {
+ fn init(&mut self, _supp: &mut NADecoderSupport, info: NACodecInfoRef) -> DecoderResult<()> {
+ if let NACodecTypeInfo::Audio(_ainfo) = info.get_properties() {
+ if let Some(buf) = info.get_extradata() {
+ let mut mr = MemoryReader::new_read(&buf);
+ let mut br = ByteReader::new(&mut mr);
+ let version = br.read_u16le()?;
+ let compression = br.read_u16le()?;
+ let _flags = br.read_u16le()?;
+ let channels = br.read_byte()?;
+ let bits = br.read_byte()?;
+ let srate = br.read_u32le()?;
+ let blocksperframe = br.read_u32le()? as usize;
+
+ validate!(channels > 0);
+ validate!(bits > 0 && bits <= 32);
+ validate!((compression % 1000) == 0 && compression > 0 && compression <= 5000);
+ validate!(compression < 5000 || version >= 3930);
+ if bits != 16 {
+ return Err(DecoderError::NotImplemented);
+ }
+ if version > 3990 {
+ return Err(DecoderError::NotImplemented);
+ }
+
+ self.version = version;
+ self.blocksperframe = blocksperframe;
+ self.is_stereo = channels == 2;
+ self.left.resize(blocksperframe, 0);
+ if self.is_stereo {
+ self.right.resize(blocksperframe, 0);
+ }
+
+ self.decode_mono = if version >= 3990 {
+ decode_mono_3990
+ } else if version >= 3910 {
+ decode_mono_3910
+ } else if version >= 3900 {
+ decode_mono_3900
+ } else if version >= 3890 {
+ decode_mono_3890
+ } else if version >= 3860 {
+ decode_mono_3860
+ } else {
+ decode_mono_0000
+ };
+ self.decode_stereo = if version >= 3990 {
+ decode_stereo_3990
+ } else if version >= 3930 {
+ decode_stereo_3930
+ } else if version >= 3910 {
+ decode_stereo_3910
+ } else if version >= 3900 {
+ decode_stereo_3900
+ } else if version >= 3890 {
+ decode_stereo_3890
+ } else if version >= 3860 {
+ decode_stereo_3860
+ } else {
+ decode_stereo_0000
+ };
+ self.fmode = FilterMode::new(version, compression);
+
+ self.chmap = if channels == 1 {
+ NAChannelMap::from_str("C").unwrap()
+ } else if channels == 2 {
+ NAChannelMap::from_str("L,R").unwrap()
+ } else {
+ return Err(DecoderError::NotImplemented);
+ };
+ self.ainfo = NAAudioInfo::new(srate, channels as u8, SND_S16P_FORMAT, 4602);
+ Ok(())
+ } else {
+ Err(DecoderError::InvalidData)
+ }
+ } else {
+ Err(DecoderError::InvalidData)
+ }
+ }
+ fn decode(&mut self, _supp: &mut NADecoderSupport, pkt: &NAPacket) -> DecoderResult<NAFrameRef> {
+ let info = pkt.get_stream().get_info();
+ if let NACodecTypeInfo::Audio(_) = info.get_properties() {
+ let pktbuf = pkt.get_buffer();
+ validate!(pktbuf.len() > 9);
+
+ let nblocks = read_u32le(&pktbuf[0..])? as usize;
+ validate!(nblocks > 0);
+ let bits = u32::from(pktbuf[4]);
+ validate!(bits < 32);
+ self.data.truncate(0);
+ self.data.reserve((pktbuf.len() & !3) + 2);
+ for word in pktbuf[8..].chunks_exact(4) {
+ self.data.push(word[3]);
+ self.data.push(word[2]);
+ self.data.push(word[1]);
+ self.data.push(word[0]);
+ }
+ if self.version < 3950 {
+ self.data.push(0);
+ self.data.push(0);
+ }
+
+ let (mut coder, ref_crc, fflags) = if self.version < 3900 {
+ let mut br = BitReader::new(&self.data, BitReaderMode::BE);
+ br.skip(bits)?;
+ let mut crc = br.read(32)?;
+ let fflags = if self.version >= 3830 && (crc & 0x80000000) != 0 {
+ crc ^= 0x80000000;
+ br.read(32)?
+ } else {
+ 0
+ };
+ (Coder::Rice(RiceCoder::new(br)), crc, fflags)
+ } else {
+ let mut boff = (bits / 8) as usize;
+ let mut crc = read_u32be(&self.data[boff..])?;
+ boff += 4;
+ let fflags = if (crc & 0x80000000) != 0 {
+ crc ^= 0x80000000;
+ let flg = read_u32be(&self.data[boff..])?;
+ boff += 4;
+ flg
+ } else {
+ 0
+ };
+ // it ignores first byte anyway
+ (Coder::Range(RangeCoder::new(&self.data[boff + 1..])), crc, fflags)
+ };
+ self.left.resize(nblocks, 0);
+ if self.is_stereo {
+ self.right.resize(nblocks, 0);
+ }
+ if (fflags & 3) == 0 {
+ if !self.is_stereo || (fflags & 4) != 0 {
+ (self.decode_mono)(&mut coder, &mut self.left)?;
+ self.fmode.filter_mono(&mut self.left);
+
+ if (fflags & 4) != 0 {
+ self.right.copy_from_slice(&self.left);
+ }
+ } else {
+ (self.decode_stereo)(&mut coder, &mut self.left, &mut self.right)?;
+ self.fmode.filter_stereo(&mut self.left, &mut self.right);
+ }
+ }
+
+ if self.version >= 0x3990 || nblocks == self.blocksperframe {
+ let mut crc = 0xFFFFFFFF;
+ if !self.is_stereo {
+ for el in self.left.iter() {
+ let byte1 = *el as u8;
+ let byte0 = (*el >> 8) as u8;
+ crc = (crc >> 8) ^ CRC32_TAB[((crc as u8) ^ byte1) as usize];
+ crc = (crc >> 8) ^ CRC32_TAB[((crc as u8) ^ byte0) as usize];
+ }
+ } else {
+ for (l, r) in self.left.iter().zip(self.right.iter()) {
+ let byte1 = *l as u8;
+ let byte0 = (*l >> 8) as u8;
+ crc = (crc >> 8) ^ CRC32_TAB[((crc as u8) ^ byte1) as usize];
+ crc = (crc >> 8) ^ CRC32_TAB[((crc as u8) ^ byte0) as usize];
+ let byte1 = *r as u8;
+ let byte0 = (*r >> 8) as u8;
+ crc = (crc >> 8) ^ CRC32_TAB[((crc as u8) ^ byte1) as usize];
+ crc = (crc >> 8) ^ CRC32_TAB[((crc as u8) ^ byte0) as usize];
+ }
+ }
+ crc = !crc;
+ if self.version >= 3830 {
+ crc >>= 1;
+ }
+ if crc != ref_crc {
+ return Err(DecoderError::ChecksumError);
+ }
+ }
+
+ let abuf = alloc_audio_buffer(self.ainfo, nblocks, self.chmap.clone())?;
+ let mut adata = abuf.get_abuf_i16().unwrap();
+ let off1 = adata.get_offset(1);
+ let dst = adata.get_data_mut().unwrap();
+ let (left, right) = dst.split_at_mut(off1);
+ for (dst, src) in left.iter_mut().zip(self.left.iter()) {
+ *dst = *src as i16;
+ }
+ if self.is_stereo {
+ for (dst, src) in right.iter_mut().zip(self.right.iter()) {
+ *dst = *src as i16;
+ }
+ }
+
+ let mut frm = NAFrame::new_from_pkt(pkt, info, abuf);
+ frm.set_duration(Some(nblocks as u64));
+ Ok(frm.into_ref())
+ } else {
+ Err(DecoderError::InvalidData)
+ }
+ }
+ fn flush(&mut self) {
+ }
+}
+
+impl NAOptionHandler for APEDecoder {
+ fn get_supported_options(&self) -> &[NAOptionDefinition] { &[] }
+ fn set_options(&mut self, _options: &[NAOption]) { }
+ fn query_option_value(&self, _name: &str) -> Option<NAValue> { None }
+}
+
+pub fn get_decoder() -> Box<dyn NADecoder + Send> {
+ Box::new(APEDecoder::new())
+}
+
+#[cfg(test)]
+mod test {
+ use nihav_core::codecs::RegisteredDecoders;
+ use nihav_core::demuxers::RegisteredDemuxers;
+ use nihav_codec_support::test::dec_video::*;
+ use crate::llaudio_register_all_decoders;
+ use crate::llaudio_register_all_demuxers;
+ #[test]
+ fn test_ape_3990() {
+ let mut dmx_reg = RegisteredDemuxers::new();
+ llaudio_register_all_demuxers(&mut dmx_reg);
+ let mut dec_reg = RegisteredDecoders::new();
+ llaudio_register_all_decoders(&mut dec_reg);
+
+ test_decoding("ape", "ape", "assets/LLaudio/ape/luckynight.ape", Some(3), &dmx_reg, &dec_reg,
+ ExpectedTestResult::MD5([0x569e002b, 0xd93772a9, 0x1cfd81cd, 0xad81319a]));
+ }
+ #[test]
+ fn test_ape_3940() {
+ let mut dmx_reg = RegisteredDemuxers::new();
+ llaudio_register_all_demuxers(&mut dmx_reg);
+ let mut dec_reg = RegisteredDecoders::new();
+ llaudio_register_all_decoders(&mut dec_reg);
+
+ test_decoding("ape", "ape", "assets/LLaudio/ape/luckynight-mac394b1-c4000.ape", Some(1), &dmx_reg, &dec_reg,
+ ExpectedTestResult::MD5([0xeb55ece6, 0xe5f22759, 0xd0696dd6, 0x84ae9a6c]));
+ }
+ #[test]
+ fn test_ape_3920() {
+ let mut dmx_reg = RegisteredDemuxers::new();
+ llaudio_register_all_demuxers(&mut dmx_reg);
+ let mut dec_reg = RegisteredDecoders::new();
+ llaudio_register_all_decoders(&mut dec_reg);
+
+ test_decoding("ape", "ape", "assets/LLaudio/ape/luckynight-mac392b2-c4000.ape", Some(1), &dmx_reg, &dec_reg,
+ ExpectedTestResult::MD5([0xeb55ece6, 0xe5f22759, 0xd0696dd6, 0x84ae9a6c]));
+ }
+ #[test]
+ fn test_ape_3910() {
+ let mut dmx_reg = RegisteredDemuxers::new();
+ llaudio_register_all_demuxers(&mut dmx_reg);
+ let mut dec_reg = RegisteredDecoders::new();
+ llaudio_register_all_decoders(&mut dec_reg);
+
+ test_decoding("ape", "ape", "assets/LLaudio/ape/luckynight-mac391b1-c4000.ape", Some(1), &dmx_reg, &dec_reg,
+ ExpectedTestResult::MD5([0xeb55ece6, 0xe5f22759, 0xd0696dd6, 0x84ae9a6c]));
+ }
+ #[test]
+ fn test_ape_3890() {
+ let mut dmx_reg = RegisteredDemuxers::new();
+ llaudio_register_all_demuxers(&mut dmx_reg);
+ let mut dec_reg = RegisteredDecoders::new();
+ llaudio_register_all_decoders(&mut dec_reg);
+
+ test_decoding("ape", "ape", "assets/LLaudio/ape/luckynight-mac389b1-c4000.ape", Some(1), &dmx_reg, &dec_reg,
+ ExpectedTestResult::MD5([0xeb55ece6, 0xe5f22759, 0xd0696dd6, 0x84ae9a6c]));
+ }
+ #[test]
+ fn test_ape_3880() {
+ let mut dmx_reg = RegisteredDemuxers::new();
+ llaudio_register_all_demuxers(&mut dmx_reg);
+ let mut dec_reg = RegisteredDecoders::new();
+ llaudio_register_all_decoders(&mut dec_reg);
+
+ test_decoding("ape", "ape", "assets/LLaudio/ape/luckynight-mac388-c4000.ape", Some(1), &dmx_reg, &dec_reg,
+ ExpectedTestResult::MD5([0xeb55ece6, 0xe5f22759, 0xd0696dd6, 0x84ae9a6c]));
+ }
+ #[test]
+ fn test_ape_3800() {
+ let mut dmx_reg = RegisteredDemuxers::new();
+ llaudio_register_all_demuxers(&mut dmx_reg);
+ let mut dec_reg = RegisteredDecoders::new();
+ llaudio_register_all_decoders(&mut dec_reg);
+
+ test_decoding("ape", "ape", "assets/LLaudio/ape/luckynight-mac380-c4000.ape", Some(1), &dmx_reg, &dec_reg,
+ ExpectedTestResult::MD5([0xeb55ece6, 0xe5f22759, 0xd0696dd6, 0x84ae9a6c]));
+ }
+}
+
+const CRC32_TAB: [u32; 256] = [
+ 0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA, 0x076DC419, 0x706AF48F, 0xE963A535, 0x9E6495A3,
+ 0x0EDB8832, 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988, 0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91,
+ 0x1DB71064, 0x6AB020F2, 0xF3B97148, 0x84BE41DE, 0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7,
+ 0x136C9856, 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC, 0x14015C4F, 0x63066CD9, 0xFA0F3D63, 0x8D080DF5,
+ 0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172, 0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B,
+ 0x35B5A8FA, 0x42B2986C, 0xDBBBC9D6, 0xACBCF940, 0x32D86CE3, 0x45DF5C75, 0xDCD60DCF, 0xABD13D59,
+ 0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116, 0x21B4F4B5, 0x56B3C423, 0xCFBA9599, 0xB8BDA50F,
+ 0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924, 0x2F6F7C87, 0x58684C11, 0xC1611DAB, 0xB6662D3D,
+ 0x76DC4190, 0x01DB7106, 0x98D220BC, 0xEFD5102A, 0x71B18589, 0x06B6B51F, 0x9FBFE4A5, 0xE8B8D433,
+ 0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818, 0x7F6A0DBB, 0x086D3D2D, 0x91646C97, 0xE6635C01,
+ 0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E, 0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457,
+ 0x65B0D9C6, 0x12B7E950, 0x8BBEB8EA, 0xFCB9887C, 0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65,
+ 0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2, 0x4ADFA541, 0x3DD895D7, 0xA4D1C46D, 0xD3D6F4FB,
+ 0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0, 0x44042D73, 0x33031DE5, 0xAA0A4C5F, 0xDD0D7CC9,
+ 0x5005713C, 0x270241AA, 0xBE0B1010, 0xC90C2086, 0x5768B525, 0x206F85B3, 0xB966D409, 0xCE61E49F,
+ 0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4, 0x59B33D17, 0x2EB40D81, 0xB7BD5C3B, 0xC0BA6CAD,
+ 0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A, 0xEAD54739, 0x9DD277AF, 0x04DB2615, 0x73DC1683,
+ 0xE3630B12, 0x94643B84, 0x0D6D6A3E, 0x7A6A5AA8, 0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1,
+ 0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE, 0xF762575D, 0x806567CB, 0x196C3671, 0x6E6B06E7,
+ 0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC, 0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5,
+ 0xD6D6A3E8, 0xA1D1937E, 0x38D8C2C4, 0x4FDFF252, 0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B,
+ 0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, 0x41047A60, 0xDF60EFC3, 0xA867DF55, 0x316E8EEF, 0x4669BE79,
+ 0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236, 0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F,
+ 0xC5BA3BBE, 0xB2BD0B28, 0x2BB45A92, 0x5CB36A04, 0xC2D7FFA7, 0xB5D0CF31, 0x2CD99E8B, 0x5BDEAE1D,
+ 0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A, 0x9C0906A9, 0xEB0E363F, 0x72076785, 0x05005713,
+ 0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38, 0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, 0x0BDBDF21,
+ 0x86D3D2D4, 0xF1D4E242, 0x68DDB3F8, 0x1FDA836E, 0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777,
+ 0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C, 0x8F659EFF, 0xF862AE69, 0x616BFFD3, 0x166CCF45,
+ 0xA00AE278, 0xD70DD2EE, 0x4E048354, 0x3903B3C2, 0xA7672661, 0xD06016F7, 0x4969474D, 0x3E6E77DB,
+ 0xAED16A4A, 0xD9D65ADC, 0x40DF0B66, 0x37D83BF0, 0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9,
+ 0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6, 0xBAD03605, 0xCDD70693, 0x54DE5729, 0x23D967BF,
+ 0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94, 0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D,
+];