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|
use nihav_core::codecs::*;
use std::str::FromStr;
const SND_U8P_FORMAT: NASoniton = NASoniton { bits: 8, be: false, packed: false, planar: true, float: false, signed: false };
#[derive(Clone,Copy,Default)]
struct ChannelPredictor {
index: usize,
prev: i16,
pprev: i16,
scale: i16,
level: i16,
}
fn clip(val: i32) -> i16 {
if val > 0x7FFF { 0x7FFF }
else if val < -0x8000 { -0x7FFF }
else { val as i16 }
}
fn to_sample(val: i32) -> u8 {
((val >> 8) + 128).max(0).min(255) as u8
}
impl ChannelPredictor {
fn get_quant(&mut self, idx: usize, middle: bool) -> i16 {
let pred;
let tab_idx = (self.index >> 4) & 0x7F;
if !middle {
if idx < 4 {
pred = QUANT_TAB0[tab_idx][idx];
} else {
pred = -1 - QUANT_TAB0[tab_idx][8 - 1 - idx];
}
self.index -= self.index >> 5;
self.index = ((self.index as isize) + (STEP_TAB0[idx] as isize)).max(0) as usize;
} else {
if idx < 2 {
pred = QUANT_TAB1[tab_idx][idx];
} else {
pred = -1 - QUANT_TAB1[tab_idx][4 - 1 - idx];
}
self.index -= self.index >> 5;
self.index = ((self.index as isize) + (STEP_TAB1[idx] as isize)).max(0) as usize;
}
pred
}
fn pred_mace3(&mut self, idx: usize, middle: bool) -> u8 {
let pred = self.get_quant(idx, middle);
let cur = clip(i32::from(pred) + i32::from(self.level));
self.level = cur - (cur >> 3);
to_sample(i32::from(cur))
}
fn pred_mace6(&mut self, idx: usize, middle: bool) -> (u8, u8) {
let pred = self.get_quant(idx, middle);
if (self.prev ^ pred) >= 0 {
self.scale = self.scale.saturating_add(506);
} else {
self.scale = clip(i32::from(self.scale) - 314);
}
let mut cur = clip(i32::from(pred) + i32::from(self.level));
self.level = ((i32::from(cur) * i32::from(self.scale)) >> 15) as i16;
cur >>= 1;
let diff = (i32::from(self.pprev) - i32::from(cur)) >> 2;
let s0 = i32::from(self.pprev) + i32::from(self.prev) - diff;
let s1 = i32::from(self.prev) + i32::from(cur) + diff;
self.pprev = self.prev;
self.prev = cur;
(to_sample(s0), to_sample(s1))
}
}
struct MaceDecoder {
ainfo: NAAudioInfo,
chmap: NAChannelMap,
ch_pred: [ChannelPredictor; 2],
is_mace6: bool,
}
impl MaceDecoder {
fn new(is_mace6: bool) -> Self {
Self {
ainfo: NAAudioInfo::new(0, 1, SND_U8P_FORMAT, 1),
chmap: NAChannelMap::new(),
ch_pred: [ChannelPredictor::default(); 2],
is_mace6,
}
}
}
impl NADecoder for MaceDecoder {
fn init(&mut self, _supp: &mut NADecoderSupport, info: NACodecInfoRef) -> DecoderResult<()> {
if let NACodecTypeInfo::Audio(ainfo) = info.get_properties() {
let channels = ainfo.get_channels() as usize;
validate!(channels == 2 || channels == 1);
self.ainfo = NAAudioInfo::new(ainfo.get_sample_rate(), channels as u8, SND_U8P_FORMAT, 1);
self.chmap = NAChannelMap::from_str(if channels == 1 { "C" } else { "L,R" }).unwrap();
Ok(())
} 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();
let channels = self.chmap.num_channels();
let nsamples = pktbuf.len() * (if self.is_mace6 { 6 } else { 3 }) / channels;
let abuf = alloc_audio_buffer(self.ainfo, nsamples, self.chmap.clone())?;
let mut adata = abuf.get_abuf_u8().unwrap();
let mut off = [adata.get_offset(0), adata.get_offset(1)];
let dst = adata.get_data_mut().unwrap();
if !self.is_mace6 {
for src in pktbuf.chunks(channels) {
for ch in 0..channels {
let val = src[ch];
let idx0 = val & 7;
let idx1 = (val >> 3) & 3;
let idx2 = val >> 5;
dst[off[ch]] = self.ch_pred[ch].pred_mace3(idx0 as usize, false);
dst[off[ch] + 1] = self.ch_pred[ch].pred_mace3(idx1 as usize, true);
dst[off[ch] + 2] = self.ch_pred[ch].pred_mace3(idx2 as usize, false);
off[ch] += 3;
}
}
} else {
for src in pktbuf.chunks(channels) {
for ch in 0..channels {
let val = src[ch];
let idx0 = val >> 5;
let idx1 = (val >> 3) & 3;
let idx2 = val & 7;
let (s0, s1) = self.ch_pred[ch].pred_mace6(idx0 as usize, false);
dst[off[ch]] = s0;
dst[off[ch] + 1] = s1;
let (s0, s1) = self.ch_pred[ch].pred_mace6(idx1 as usize, true);
dst[off[ch] + 2] = s0;
dst[off[ch] + 3] = s1;
let (s0, s1) = self.ch_pred[ch].pred_mace6(idx2 as usize, false);
dst[off[ch] + 4] = s0;
dst[off[ch] + 5] = s1;
off[ch] += 6;
}
}
}
let mut frm = NAFrame::new_from_pkt(pkt, info.replace_info(NACodecTypeInfo::Audio(self.ainfo)), abuf);
frm.set_duration(Some(nsamples as u64));
frm.set_keyframe(false);
Ok(frm.into_ref())
} else {
Err(DecoderError::InvalidData)
}
}
fn flush(&mut self) {
}
}
impl NAOptionHandler for MaceDecoder {
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_3() -> Box<dyn NADecoder + Send> {
Box::new(MaceDecoder::new(false))
}
pub fn get_decoder_6() -> Box<dyn NADecoder + Send> {
Box::new(MaceDecoder::new(true))
}
#[cfg(test)]
mod test {
use nihav_core::codecs::RegisteredDecoders;
use nihav_core::demuxers::RegisteredDemuxers;
use nihav_codec_support::test::dec_video::*;
use crate::qt_register_all_decoders;
use nihav_commonfmt::generic_register_all_demuxers;
#[test]
fn test_mace3() {
let mut dmx_reg = RegisteredDemuxers::new();
generic_register_all_demuxers(&mut dmx_reg);
let mut dec_reg = RegisteredDecoders::new();
qt_register_all_decoders(&mut dec_reg);
test_decoding("mov", "mace-3", "assets/QT/surge-1-8-MAC3.mov", None, &dmx_reg, &dec_reg,
ExpectedTestResult::MD5([0x2df88db3, 0xa6167019, 0x6d4c64e7, 0xc89da2a5]));
}
#[test]
fn test_mace6() {
let mut dmx_reg = RegisteredDemuxers::new();
generic_register_all_demuxers(&mut dmx_reg);
let mut dec_reg = RegisteredDecoders::new();
qt_register_all_decoders(&mut dec_reg);
test_decoding("mov", "mace-6", "assets/QT/surge-1-8-MAC6.mov", None, &dmx_reg, &dec_reg,
ExpectedTestResult::MD5([0xc32857e2, 0xc1ea1ce8, 0x2d77dacf, 0xef504f1f]));
}
}
const STEP_TAB0: [i16; 8] = [ -13, 8, 76, 222, 222, 76, 8, -13 ];
const STEP_TAB1: [i16; 4] = [ -18, 140, 140, -18 ];
const QUANT_TAB0: [[i16; 4]; 128] = [
[ 37, 116, 206, 330 ], [ 39, 121, 216, 346 ],
[ 41, 127, 225, 361 ], [ 42, 132, 235, 377 ],
[ 44, 137, 245, 392 ], [ 46, 144, 256, 410 ],
[ 48, 150, 267, 428 ], [ 51, 157, 280, 449 ],
[ 53, 165, 293, 470 ], [ 55, 172, 306, 490 ],
[ 58, 179, 319, 511 ], [ 60, 187, 333, 534 ],
[ 63, 195, 348, 557 ], [ 66, 205, 364, 583 ],
[ 69, 214, 380, 609 ], [ 72, 223, 396, 635 ],
[ 75, 233, 414, 663 ], [ 79, 244, 433, 694 ],
[ 82, 254, 453, 725 ], [ 86, 265, 472, 756 ],
[ 90, 278, 495, 792 ], [ 94, 290, 516, 826 ],
[ 98, 303, 538, 862 ], [ 102, 316, 562, 901 ],
[ 107, 331, 588, 942 ], [ 112, 345, 614, 983 ],
[ 117, 361, 641, 1027 ], [ 122, 377, 670, 1074 ],
[ 127, 394, 701, 1123 ], [ 133, 411, 732, 1172 ],
[ 139, 430, 764, 1224 ], [ 145, 449, 799, 1280 ],
[ 152, 469, 835, 1337 ], [ 159, 490, 872, 1397 ],
[ 166, 512, 911, 1459 ], [ 173, 535, 951, 1523 ],
[ 181, 558, 993, 1590 ], [ 189, 584, 1038, 1663 ],
[ 197, 610, 1085, 1738 ], [ 206, 637, 1133, 1815 ],
[ 215, 665, 1183, 1895 ], [ 225, 695, 1237, 1980 ],
[ 235, 726, 1291, 2068 ], [ 246, 759, 1349, 2161 ],
[ 257, 792, 1409, 2257 ], [ 268, 828, 1472, 2357 ],
[ 280, 865, 1538, 2463 ], [ 293, 903, 1606, 2572 ],
[ 306, 944, 1678, 2688 ], [ 319, 986, 1753, 2807 ],
[ 334, 1030, 1832, 2933 ], [ 349, 1076, 1914, 3065 ],
[ 364, 1124, 1999, 3202 ], [ 380, 1174, 2088, 3344 ],
[ 398, 1227, 2182, 3494 ], [ 415, 1281, 2278, 3649 ],
[ 434, 1339, 2380, 3811 ], [ 453, 1398, 2486, 3982 ],
[ 473, 1461, 2598, 4160 ], [ 495, 1526, 2714, 4346 ],
[ 517, 1594, 2835, 4540 ], [ 540, 1665, 2961, 4741 ],
[ 564, 1740, 3093, 4953 ], [ 589, 1818, 3232, 5175 ],
[ 615, 1898, 3375, 5405 ], [ 643, 1984, 3527, 5647 ],
[ 671, 2072, 3683, 5898 ], [ 701, 2164, 3848, 6161 ],
[ 733, 2261, 4020, 6438 ], [ 766, 2362, 4199, 6724 ],
[ 800, 2467, 4386, 7024 ], [ 836, 2578, 4583, 7339 ],
[ 873, 2692, 4786, 7664 ], [ 912, 2813, 5001, 8008 ],
[ 952, 2938, 5223, 8364 ], [ 995, 3070, 5457, 8739 ],
[ 1039, 3207, 5701, 9129 ], [ 1086, 3350, 5956, 9537 ],
[ 1134, 3499, 6220, 9960 ], [ 1185, 3655, 6497, 10404 ],
[ 1238, 3818, 6788, 10869 ], [ 1293, 3989, 7091, 11355 ],
[ 1351, 4166, 7407, 11861 ], [ 1411, 4352, 7738, 12390 ],
[ 1474, 4547, 8084, 12946 ], [ 1540, 4750, 8444, 13522 ],
[ 1609, 4962, 8821, 14126 ], [ 1680, 5183, 9215, 14756 ],
[ 1756, 5415, 9626, 15415 ], [ 1834, 5657, 10057, 16104 ],
[ 1916, 5909, 10505, 16822 ], [ 2001, 6173, 10975, 17574 ],
[ 2091, 6448, 11463, 18356 ], [ 2184, 6736, 11974, 19175 ],
[ 2282, 7037, 12510, 20032 ], [ 2383, 7351, 13068, 20926 ],
[ 2490, 7679, 13652, 21861 ], [ 2601, 8021, 14260, 22834 ],
[ 2717, 8380, 14897, 23854 ], [ 2838, 8753, 15561, 24918 ],
[ 2965, 9144, 16256, 26031 ], [ 3097, 9553, 16982, 27193 ],
[ 3236, 9979, 17740, 28407 ], [ 3380, 10424, 18532, 29675 ],
[ 3531, 10890, 19359, 31000 ], [ 3688, 11375, 20222, 32382 ],
[ 3853, 11883, 21125, 32767 ], [ 4025, 12414, 22069, 32767 ],
[ 4205, 12967, 23053, 32767 ], [ 4392, 13546, 24082, 32767 ],
[ 4589, 14151, 25157, 32767 ], [ 4793, 14783, 26280, 32767 ],
[ 5007, 15442, 27452, 32767 ], [ 5231, 16132, 28678, 32767 ],
[ 5464, 16851, 29957, 32767 ], [ 5708, 17603, 31294, 32767 ],
[ 5963, 18389, 32691, 32767 ], [ 6229, 19210, 32767, 32767 ],
[ 6507, 20067, 32767, 32767 ], [ 6797, 20963, 32767, 32767 ],
[ 7101, 21899, 32767, 32767 ], [ 7418, 22876, 32767, 32767 ],
[ 7749, 23897, 32767, 32767 ], [ 8095, 24964, 32767, 32767 ],
[ 8456, 26078, 32767, 32767 ], [ 8833, 27242, 32767, 32767 ],
[ 9228, 28457, 32767, 32767 ], [ 9639, 29727, 32767, 32767 ]
];
const QUANT_TAB1: [[i16; 2]; 128] = [
[ 64, 216 ], [ 67, 226 ], [ 70, 236 ], [ 74, 246 ],
[ 77, 257 ], [ 80, 268 ], [ 84, 280 ], [ 88, 294 ],
[ 92, 307 ], [ 96, 321 ], [ 100, 334 ], [ 104, 350 ],
[ 109, 365 ], [ 114, 382 ], [ 119, 399 ], [ 124, 416 ],
[ 130, 434 ], [ 136, 454 ], [ 142, 475 ], [ 148, 495 ],
[ 155, 519 ], [ 162, 541 ], [ 169, 564 ], [ 176, 590 ],
[ 185, 617 ], [ 193, 644 ], [ 201, 673 ], [ 210, 703 ],
[ 220, 735 ], [ 230, 767 ], [ 240, 801 ], [ 251, 838 ],
[ 262, 876 ], [ 274, 914 ], [ 286, 955 ], [ 299, 997 ],
[ 312, 1041 ], [ 326, 1089 ], [ 341, 1138 ], [ 356, 1188 ],
[ 372, 1241 ], [ 388, 1297 ], [ 406, 1354 ], [ 424, 1415 ],
[ 443, 1478 ], [ 462, 1544 ], [ 483, 1613 ], [ 505, 1684 ],
[ 527, 1760 ], [ 551, 1838 ], [ 576, 1921 ], [ 601, 2007 ],
[ 628, 2097 ], [ 656, 2190 ], [ 686, 2288 ], [ 716, 2389 ],
[ 748, 2496 ], [ 781, 2607 ], [ 816, 2724 ], [ 853, 2846 ],
[ 891, 2973 ], [ 930, 3104 ], [ 972, 3243 ], [ 1016, 3389 ],
[ 1061, 3539 ], [ 1108, 3698 ], [ 1158, 3862 ], [ 1209, 4035 ],
[ 1264, 4216 ], [ 1320, 4403 ], [ 1379, 4599 ], [ 1441, 4806 ],
[ 1505, 5019 ], [ 1572, 5244 ], [ 1642, 5477 ], [ 1715, 5722 ],
[ 1792, 5978 ], [ 1872, 6245 ], [ 1955, 6522 ], [ 2043, 6813 ],
[ 2134, 7118 ], [ 2229, 7436 ], [ 2329, 7767 ], [ 2432, 8114 ],
[ 2541, 8477 ], [ 2655, 8854 ], [ 2773, 9250 ], [ 2897, 9663 ],
[ 3026, 10094 ], [ 3162, 10546 ], [ 3303, 11016 ], [ 3450, 11508 ],
[ 3604, 12020 ], [ 3765, 12556 ], [ 3933, 13118 ], [ 4108, 13703 ],
[ 4292, 14315 ], [ 4483, 14953 ], [ 4683, 15621 ], [ 4892, 16318 ],
[ 5111, 17046 ], [ 5339, 17807 ], [ 5577, 18602 ], [ 5826, 19433 ],
[ 6086, 20300 ], [ 6358, 21205 ], [ 6642, 22152 ], [ 6938, 23141 ],
[ 7248, 24173 ], [ 7571, 25252 ], [ 7909, 26380 ], [ 8262, 27557 ],
[ 8631, 28786 ], [ 9016, 30072 ], [ 9419, 31413 ], [ 9839, 32767 ],
[ 10278, 32767 ], [ 10737, 32767 ], [ 11216, 32767 ], [ 11717, 32767 ],
[ 12240, 32767 ], [ 12786, 32767 ], [ 13356, 32767 ], [ 13953, 32767 ],
[ 14576, 32767 ], [ 15226, 32767 ], [ 15906, 32767 ], [ 16615, 32767 ]
];
|
