1 use nihav_core::codecs::*;
2 use nihav_core::io::byteio::*;
3 use nihav_core::io::bitreader::*;
4 use nihav_core::io::codebook::*;
7 const PAL_SIZE: usize = 768;
8 const SMK_FLAG_INTERLACED: u32 = 0x02;
9 const SMK_FLAG_SCALED: u32 = 0x04;
12 cb: Option<Codebook<u8>>,
16 fn get_tree8(br: &mut BitReader, bits: &mut [u8; 256], codes: &mut [u32; 256], syms: &mut [u8; 256], count: &mut usize, len: u8, prefix: u32) -> DecoderResult<()> {
19 codes[*count] = prefix;
20 syms[*count] = br.read(8)? as u8;
23 validate!((*count <= 256 - 2) && (len <= 31));
24 get_tree8(br, bits, codes, syms, count, len + 1, prefix)?;
25 get_tree8(br, bits, codes, syms, count, len + 1, prefix | (1 << len))?;
30 pub struct FullTableCodebookDescReader<'a> {
36 impl<'a> FullTableCodebookDescReader<'a> {
37 pub fn new(codes: &'a [u32], bits: &'a [u8], syms: &'a [u8]) -> Self {
38 Self { bits, codes, syms }
41 impl<'a> CodebookDescReader<u8> for FullTableCodebookDescReader<'a>
43 fn bits(&mut self, idx: usize) -> u8 { self.bits[idx] }
44 fn code(&mut self, idx: usize) -> u32 { self.codes[idx] }
45 fn sym (&mut self, idx: usize) -> u8 { self.syms[idx] }
46 fn len(&mut self) -> usize { self.bits.len() }
56 fn decode(&mut self, br: &mut BitReader) -> DecoderResult<()> {
57 if !br.read_bool()? { return Ok(()); }
59 let mut bits: [u8; 256] = [0; 256];
60 let mut codes: [u32; 256] = [0; 256];
61 let mut syms: [u8; 256] = [0; 256];
64 get_tree8(br, &mut bits, &mut codes, &mut syms, &mut count, 0, 0)?;
65 validate!(!br.read_bool()?);
68 let mut cr = FullTableCodebookDescReader::new(&codes[0..count], &bits[0..count], &syms[0..count]);
69 let cb = Codebook::new(&mut cr, CodebookMode::LSB)?;
72 self.defsym = syms[0];
79 struct SmackerTree16 {
84 struct SmackerTree16Builder {
85 tree_lo: SmackerTree8,
86 tree_hi: SmackerTree8,
91 const SMK_BIGTREE_NODE: u32 = 0x80000000;
92 const SMK_LAST_UNINIT: usize = 0xFFFFFFFF;
94 impl SmackerTree16Builder {
95 fn get_tree16(&mut self, br: &mut BitReader, tree: &mut SmackerTree16, depth: usize) -> DecoderResult<u32> {
96 validate!(tree.tree.len() < self.nsyms);
98 let lo = br.read_tree8(&self.tree_lo)?;
99 let hi = br.read_tree8(&self.tree_hi)?;
100 let mut sym = (((hi as u16) << 8) | (lo as u16)) as u32;
101 if sym == self.esc[0] {
102 tree.last[0] = tree.tree.len();
104 } else if sym == self.esc[1] {
105 tree.last[1] = tree.tree.len();
107 } else if sym == self.esc[2] {
108 tree.last[2] = tree.tree.len();
114 let cur_idx = tree.tree.len();
116 let lcount = self.get_tree16(br, tree, depth + 1)?;
117 let rcount = self.get_tree16(br, tree, depth + 1)?;
118 tree.tree[cur_idx] = SMK_BIGTREE_NODE | lcount;
119 Ok(lcount + rcount + 1)
128 last: [SMK_LAST_UNINIT; 3],
131 fn decode(&mut self, br: &mut BitReader, size: u32) -> DecoderResult<()> {
132 if !br.read_bool()? { return Ok(()); }
134 let mut tree_lo = SmackerTree8::new();
136 let mut tree_hi = SmackerTree8::new();
139 let mut esc: [u32; 3] = [0; 3];
140 for i in 0..esc.len() {
141 esc[i] = br.read(16)? as u32;
144 let nsyms = (((size + 3) >> 2) + 4) as usize;
145 self.tree = Vec::with_capacity(nsyms);
147 let mut tb = SmackerTree16Builder { tree_lo, tree_hi, nsyms, esc };
149 tb.get_tree16(br, self, 0)?;
150 validate!(!br.read_bool()?);
152 for i in 0..self.last.len() {
153 if self.last[i] == SMK_LAST_UNINIT {
154 self.last[i] = self.tree.len();
158 validate!(self.tree.len() <= nsyms);
161 fn reset(&mut self) {
162 for i in 0..self.last.len() {
163 if self.last[i] != SMK_LAST_UNINIT {
164 self.tree[self.last[i]] = 0;
171 fn read_tree8(&mut self, tree: &SmackerTree8) -> DecoderResult<u8>;
172 fn read_bigtree(&mut self, tree: &mut SmackerTree16) -> DecoderResult<u16>;
175 impl<'a> ReadTree for BitReader<'a> {
176 fn read_tree8(&mut self, tree: &SmackerTree8) -> DecoderResult<u8> {
177 if let Some(ref cb) = tree.cb {
178 Ok(self.read_cb(cb)?)
183 fn read_bigtree(&mut self, tree: &mut SmackerTree16) -> DecoderResult<u16> {
185 while (tree.tree[pos] & SMK_BIGTREE_NODE) != 0 {
186 if self.read_bool()? {
187 pos += (tree.tree[pos] & !SMK_BIGTREE_NODE) as usize;
191 let val = tree.tree[pos];
192 if val != tree.tree[tree.last[0]] {
193 tree.tree[tree.last[2]] = tree.tree[tree.last[1]];
194 tree.tree[tree.last[1]] = tree.tree[tree.last[0]];
195 tree.tree[tree.last[0]] = val;
201 const SMK_BLOCK_RUNS: [usize; 64] = [
202 1, 2, 3, 4, 5, 6, 7, 8,
203 9, 10, 11, 12, 13, 14, 15, 16,
204 17, 18, 19, 20, 21, 22, 23, 24,
205 25, 26, 27, 28, 29, 30, 31, 32,
206 33, 34, 35, 36, 37, 38, 39, 40,
207 41, 42, 43, 44, 45, 46, 47, 48,
208 49, 50, 51, 52, 53, 54, 55, 56,
209 57, 58, 59, 128, 256, 512, 1024, 2048
212 struct SmackerVideoDecoder {
213 info: NACodecInfoRef,
214 mmap_tree: SmackerTree16,
215 mclr_tree: SmackerTree16,
216 full_tree: SmackerTree16,
217 type_tree: SmackerTree16,
228 impl SmackerVideoDecoder {
231 info: NACodecInfoRef::default(),
232 mmap_tree: SmackerTree16::new(),
233 mclr_tree: SmackerTree16::new(),
234 full_tree: SmackerTree16::new(),
235 type_tree: SmackerTree16::new(),
246 fn block_pos(&self, blk_no: usize) -> usize {
247 let bx = blk_no % self.bw;
248 let by = blk_no / self.bw;
249 bx * 4 + by * 4 * self.stride
251 fn decode_frame(&mut self, br: &mut BitReader) -> DecoderResult<bool> {
252 let mut is_intra = true;
253 let blocks = self.bw * self.bh;
255 self.mmap_tree.reset();
256 self.mclr_tree.reset();
257 self.full_tree.reset();
258 self.type_tree.reset();
261 while block < blocks {
262 let btype = br.read_bigtree(&mut self.type_tree)?;
263 let run = SMK_BLOCK_RUNS[((btype as usize) >> 2) & 0x3F];
264 validate!(run <= blocks - block);
266 0 => { // two-colour pattern
268 let clr = br.read_bigtree(&mut self.mclr_tree)?;
269 let mut map = br.read_bigtree(&mut self.mmap_tree)?;
270 let hi = (clr >> 8) as u8;
271 let lo = (clr & 0xFF) as u8;
272 let mut doff = self.block_pos(block + i);
274 self.frame[doff + 0] = if (map & 1) != 0 { hi } else { lo };
275 self.frame[doff + 1] = if (map & 2) != 0 { hi } else { lo };
276 self.frame[doff + 2] = if (map & 4) != 0 { hi } else { lo };
277 self.frame[doff + 3] = if (map & 8) != 0 { hi } else { lo };
285 if !self.is_ver4 || !br.read_bool()? {
288 mode = 1 + br.read(1)?;
291 let mut doff = self.block_pos(block + i);
295 let clr0 = br.read_bigtree(&mut self.full_tree)?;
296 let clr1 = br.read_bigtree(&mut self.full_tree)?;
297 self.frame[doff + 0] = (clr1 & 0xFF) as u8;
298 self.frame[doff + 1] = (clr1 >> 8) as u8;
299 self.frame[doff + 2] = (clr0 & 0xFF) as u8;
300 self.frame[doff + 3] = (clr0 >> 8) as u8;
306 let clr = br.read_bigtree(&mut self.full_tree)?;
307 self.frame[doff + 0] = (clr & 0xFF) as u8;
308 self.frame[doff + 1] = (clr & 0xFF) as u8;
309 self.frame[doff + 2] = (clr >> 8) as u8;
310 self.frame[doff + 3] = (clr >> 8) as u8;
312 self.frame[doff + 0] = (clr & 0xFF) as u8;
313 self.frame[doff + 1] = (clr & 0xFF) as u8;
314 self.frame[doff + 2] = (clr >> 8) as u8;
315 self.frame[doff + 3] = (clr >> 8) as u8;
321 let clr0 = br.read_bigtree(&mut self.full_tree)?;
322 let clr1 = br.read_bigtree(&mut self.full_tree)?;
323 self.frame[doff + 0] = (clr1 & 0xFF) as u8;
324 self.frame[doff + 1] = (clr1 >> 8) as u8;
325 self.frame[doff + 2] = (clr0 & 0xFF) as u8;
326 self.frame[doff + 3] = (clr0 >> 8) as u8;
328 self.frame[doff + 0] = (clr1 & 0xFF) as u8;
329 self.frame[doff + 1] = (clr1 >> 8) as u8;
330 self.frame[doff + 2] = (clr0 & 0xFF) as u8;
331 self.frame[doff + 3] = (clr0 >> 8) as u8;
343 let clr = (btype >> 8) as u8;
345 let mut doff = self.block_pos(block + i);
347 self.frame[doff + 0] = clr;
348 self.frame[doff + 1] = clr;
349 self.frame[doff + 2] = clr;
350 self.frame[doff + 3] = clr;
361 fn output_frame(&self, buf: &mut NAVideoBuffer<u8>) {
362 let stride = buf.get_stride(0);
363 let data = buf.get_data_mut().unwrap();
364 let dst = data.as_mut_slice();
365 let is_scaled = (self.flags & SMK_FLAG_SCALED) != 0;
366 let is_interlaced = (self.flags & SMK_FLAG_INTERLACED) != 0;
370 for x in 0..self.w { dst[didx + x] = self.frame[sidx + x]; }
374 for x in 0..self.w { dst[didx + x] = dst[didx - stride + x]; }
378 for x in 0..self.w { dst[didx + x] = 0; }
381 for x in 0..self.w { dst[didx + x] = 0; }
389 impl NADecoder for SmackerVideoDecoder {
390 fn init(&mut self, _supp: &mut NADecoderSupport, info: NACodecInfoRef) -> DecoderResult<()> {
391 if let NACodecTypeInfo::Video(vinfo) = info.get_properties() {
392 let w = vinfo.get_width();
393 let h = vinfo.get_height();
394 let fmt = PAL8_FORMAT;
400 let edata = info.get_extradata().unwrap();
401 validate!(edata.len() > 24);
404 self.frame.resize(w * h, 0);
406 let mut mr = MemoryReader::new_read(&edata);
407 let mut br = ByteReader::new(&mut mr);
408 let magic = br.read_u32be()?;
409 self.flags = br.read_u32le()?;
410 let mmap_size = br.read_u32le()?;
411 let mclr_size = br.read_u32le()?;
412 let full_size = br.read_u32le()?;
413 let type_size = br.read_u32le()?;
415 self.is_ver4 = (magic & 0xFF) == 0x34;
416 let mut br = BitReader::new(&edata[24..], edata.len() - 24, BitReaderMode::LE);
417 self.mmap_tree.decode(&mut br, mmap_size)?;
418 self.mclr_tree.decode(&mut br, mclr_size)?;
419 self.full_tree.decode(&mut br, full_size)?;
420 self.type_tree.decode(&mut br, type_size)?;
423 if (self.flags & SMK_FLAG_INTERLACED) != 0 {
426 if (self.flags & SMK_FLAG_SCALED) != 0 {
429 let myinfo = NACodecTypeInfo::Video(NAVideoInfo::new(w, out_h, false, fmt));
430 self.info = NACodecInfo::new_ref(info.get_name(), myinfo, info.get_extradata()).into_ref();
434 Err(DecoderError::InvalidData)
437 fn decode(&mut self, _supp: &mut NADecoderSupport, pkt: &NAPacket) -> DecoderResult<NAFrameRef> {
438 let src = pkt.get_buffer();
439 validate!(src.len() >= PAL_SIZE);
444 if src.len() > PAL_SIZE {
445 let mut br = BitReader::new(&src[PAL_SIZE..], src.len() - PAL_SIZE, BitReaderMode::LE);
447 let bufret = alloc_video_buffer(self.info.get_properties().get_video_info().unwrap(), 2);
448 if let Err(_) = bufret { return Err(DecoderError::InvalidData); }
449 bufinfo = bufret.unwrap();
450 let mut buf = bufinfo.get_vbuf().unwrap();
451 is_intra = self.decode_frame(&mut br)?;
452 self.output_frame(&mut buf);
453 let paloff = buf.get_offset(1);
454 let data = buf.get_data_mut().unwrap();
455 let dst = data.as_mut_slice();
456 let palout = &mut dst[paloff..][..PAL_SIZE];
457 palout.copy_from_slice(&src[0..PAL_SIZE]);
458 ftype = if is_intra { FrameType::I } else { FrameType::P };
460 bufinfo = NABufferType::None;
461 ftype = FrameType::Skip;
465 let mut frm = NAFrame::new_from_pkt(pkt, self.info.clone(), bufinfo);
466 frm.set_keyframe(is_intra);
467 frm.set_frame_type(ftype);
472 pub fn get_decoder_video() -> Box<dyn NADecoder> {
473 Box::new(SmackerVideoDecoder::new())
476 struct SmackerAudioDecoder {
483 impl SmackerAudioDecoder {
486 ainfo: NAAudioInfo::new(0, 1, SND_S16P_FORMAT, 0),
487 chmap: NAChannelMap::new(),
494 impl NADecoder for SmackerAudioDecoder {
495 fn init(&mut self, _supp: &mut NADecoderSupport, info: NACodecInfoRef) -> DecoderResult<()> {
496 if let NACodecTypeInfo::Audio(ainfo) = info.get_properties() {
497 self.bits = ainfo.get_format().get_bits();
498 let fmt = if self.bits == 8 { SND_U8_FORMAT } else { SND_S16P_FORMAT };
499 self.chans = ainfo.get_channels() as usize;
500 self.ainfo = NAAudioInfo::new(ainfo.get_sample_rate(), ainfo.get_channels(), fmt, 0);
501 self.chmap = NAChannelMap::from_str(if ainfo.get_channels() == 2 {"L,R"} else {"C"}).unwrap();
504 Err(DecoderError::InvalidData)
507 fn decode(&mut self, _supp: &mut NADecoderSupport, pkt: &NAPacket) -> DecoderResult<NAFrameRef> {
508 let info = pkt.get_stream().get_info();
509 if let NACodecTypeInfo::Audio(_) = info.get_properties() {
510 let src = pkt.get_buffer();
511 validate!(src.len() > 4);
512 let mut br = BitReader::new(&src, src.len(), BitReaderMode::LE);
513 let unp_size = br.read(32)? as usize;
514 if !br.read_bool()? {
515 let mut frm = NAFrame::new_from_pkt(pkt, info.clone(), NABufferType::None);
516 frm.set_frame_type(FrameType::Skip);
517 return Ok(frm.into_ref());
519 let stereo = br.read_bool()?;
520 let bits16 = br.read_bool()?;
521 validate!(!(stereo ^ (self.chans == 2)));
522 validate!(!(bits16 ^ (self.bits == 16)));
526 let nch = if stereo { 2 } else { 1 };
528 samples = unp_size / 2 / nch;
529 let mask = if stereo { 1 } else { 0 };
530 let mut trees: [SmackerTree8; 4] = [SmackerTree8::new(), SmackerTree8::new(), SmackerTree8::new(), SmackerTree8::new()];
532 trees[i].decode(&mut br)?;
534 let mut pred: [i16; 2] = [0; 2];
536 let hi = br.read(8)?;
537 let lo = br.read(8)?;
538 pred[nch - i - 1] = (lo | (hi << 8)) as i16;
541 abuf = alloc_audio_buffer(self.ainfo, samples, self.chmap.clone())?;
542 let mut adata = abuf.get_abuf_i16().unwrap();
543 let offs: [usize; 2] = [0, adata.get_offset(1)];
544 let dst = adata.get_data_mut().unwrap();
546 dst[offs[ch]] = pred[ch];
548 for i in nch..(unp_size >> 1) {
550 let lo = br.read_tree8(&trees[idx * 2 + 0])? as u16;
551 let hi = br.read_tree8(&trees[idx * 2 + 1])? as u16;
552 let diff = (lo | (hi << 8)) as i16;
553 pred[idx] = pred[idx].wrapping_add(diff);
554 dst[offs[idx] + (i >> 1)] = pred[idx];
557 samples = unp_size / nch;
558 abuf = alloc_audio_buffer(self.ainfo, samples, self.chmap.clone())?;
559 let mut adata = abuf.get_abuf_u8().unwrap();
560 let dst = adata.get_data_mut().unwrap();
562 let mut trees: [SmackerTree8; 2] = [SmackerTree8::new(), SmackerTree8::new()];
563 trees[0].decode(&mut br)?;
564 trees[1].decode(&mut br)?;
565 let pred0 = br.read(8)? as u8;
566 let pred1 = br.read(8)? as u8;
567 let mut pred: [u8; 2] = [ pred1, pred0 ];
568 for ch in 0..2 { dst[ch] = pred[ch]; }
569 for i in 2..unp_size {
570 let diff = br.read_tree8(&trees[i & 1])? as u8;
571 pred[i & 1] = pred[i & 1].wrapping_add(diff);
572 dst[i] = pred[i & 1];
575 let mut tree = SmackerTree8::new();
576 tree.decode(&mut br)?;
577 let mut pred = br.read(8)? as u8;
579 for i in 1..unp_size {
580 let diff = br.read_tree8(&tree)? as u8;
581 pred = pred.wrapping_add(diff);
586 let mut frm = NAFrame::new_from_pkt(pkt, info, abuf);
587 frm.set_duration(Some(samples as u64));
588 frm.set_keyframe(false);
591 Err(DecoderError::InvalidData)
596 pub fn get_decoder_audio() -> Box<dyn NADecoder> {
597 Box::new(SmackerAudioDecoder::new())
602 use nihav_core::codecs::RegisteredDecoders;
603 use nihav_core::demuxers::RegisteredDemuxers;
604 use nihav_core::test::dec_video::*;
605 use crate::codecs::rad_register_all_codecs;
606 use crate::demuxers::rad_register_all_demuxers;
609 let mut dmx_reg = RegisteredDemuxers::new();
610 rad_register_all_demuxers(&mut dmx_reg);
611 let mut dec_reg = RegisteredDecoders::new();
612 rad_register_all_codecs(&mut dec_reg);
614 //let file = "assets/RAD/20130507_audio-distortion.smk";
615 //let file = "assets/RAD/ajfstr1.smk";
616 //let file = "assets/RAD/credits.smk";
617 let file = "assets/RAD/wetlogo.smk";
618 test_file_decoding("smacker", file, Some(1000), true, false, None, &dmx_reg, &dec_reg);
622 let mut dmx_reg = RegisteredDemuxers::new();
623 rad_register_all_demuxers(&mut dmx_reg);
624 let mut dec_reg = RegisteredDecoders::new();
625 rad_register_all_codecs(&mut dec_reg);
627 //let file = "assets/RAD/20130507_audio-distortion.smk";
628 let file = "assets/RAD/wetlogo.smk";
629 test_decode_audio("smacker", file, None, "smk", &dmx_reg, &dec_reg);