1 use nihav_core::io::bitreader::*;
2 use nihav_core::io::codebook::*;
3 use nihav_core::formats;
4 use nihav_core::frame::*;
5 use nihav_core::codecs::*;
6 use nihav_codec_support::codecs::{MV, ZIGZAG};
7 use nihav_codec_support::codecs::h263::*;
8 use nihav_codec_support::codecs::h263::code::H263BlockDSP;
9 use nihav_codec_support::codecs::h263::decoder::*;
10 use nihav_codec_support::codecs::h263::data::*;
14 intra_mcbpc_cb: Codebook<u8>,
15 inter_mcbpc_cb: Codebook<u8>,
16 cbpy_cb: Codebook<u8>,
17 rl_cb: Codebook<H263RLSym>,
18 aic_rl_cb: Codebook<H263RLSym>,
27 lastframe: Option<NABufferType>,
45 fn check_marker<'a>(br: &mut BitReader<'a>) -> DecoderResult<()> {
46 let mark = br.read(1)?;
52 fn new(src: &'a [u8], tables: &'a Tables, ref_w: usize, ref_h: usize) -> Self {
54 br: BitReader::new(src, BitReaderMode::BE),
65 fn decode_block(&mut self, quant: u8, intra: bool, coded: bool, blk: &mut [i16; 64], plane_no: usize, acpred: ACPredMode) -> DecoderResult<()> {
66 let br = &mut self.br;
68 if !self.aic && intra {
69 let mut dc = br.read(8)? as i16;
70 if dc == 255 { dc = 128; }
74 if !coded { return Ok(()); }
75 let scan = match acpred {
76 ACPredMode::Hor => H263_SCAN_V,
77 ACPredMode::Ver => H263_SCAN_H,
81 let rl_cb = if self.aic && intra { &self.tables.aic_rl_cb } else { &self.tables.rl_cb };
82 let q = if plane_no == 0 { (quant * 2) as i16 } else { (H263_CHROMA_QUANT[quant as usize] * 2) as i16 };
83 let q_add = if q == 0 || self.aic { 0i16 } else { (((q >> 1) - 1) | 1) as i16 };
85 let code = br.read_cb(rl_cb)?;
89 if !code.is_escape() {
91 level = code.get_level();
92 last = code.is_last();
93 if br.read_bool()? { level = -level; }
95 level = (level * q) + q_add;
97 level = (level * q) - q_add;
100 last = br.read_bool()?;
101 run = br.read(6)? as u8;
102 level = br.read_s(8)? as i16;
104 let low = br.read(5)? as i16;
105 let top = br.read_s(6)? as i16;
106 level = (top << 5) | low;
109 level = (level * q) + q_add;
111 level = (level * q) - q_add;
113 if level < -2048 { level = -2048; }
114 if level > 2047 { level = 2047; }
118 let oidx = scan[idx as usize];
127 fn decode_mv_component(br: &mut BitReader, mv_cb: &Codebook<u8>) -> DecoderResult<i16> {
128 let code = i16::from(br.read_cb(mv_cb)?);
129 if code == 0 { return Ok(0) }
130 if !br.read_bool()? {
137 fn decode_mv(br: &mut BitReader, mv_cb: &Codebook<u8>) -> DecoderResult<MV> {
138 let xval = decode_mv_component(br, mv_cb)?;
139 let yval = decode_mv_component(br, mv_cb)?;
140 Ok(MV::new(xval, yval))
143 fn decode_b_info(br: &mut BitReader, is_pb: bool, is_ipb: bool, is_intra: bool) -> DecoderResult<BBlockInfo> {
144 if is_pb { // as improved pb
146 let pb_mv_add = if is_intra { 1 } else { 0 };
149 let pb_mv_count = 1 - (br.read(1)? as usize);
150 let cbpb = br.read(6)? as u8;
151 Ok(BBlockInfo::new(true, cbpb, pb_mv_count + pb_mv_add, pb_mv_count == 1))
153 Ok(BBlockInfo::new(true, 0, 1 + pb_mv_add, true))
156 Ok(BBlockInfo::new(true, 0, pb_mv_add, false))
159 let mvdb = br.read_bool()?;
160 let cbpb = if mvdb && br.read_bool()? { br.read(6)? as u8 } else { 0 };
161 Ok(BBlockInfo::new(true, cbpb, if mvdb { 1 } else { 0 }, false))
164 Ok(BBlockInfo::new(false, 0, 0, false))
168 impl<'a> BlockDecoder for VivoBR<'a> {
170 #[allow(unused_variables)]
171 fn decode_pichdr(&mut self) -> DecoderResult<PicInfo> {
172 let br = &mut self.br;
173 let syncw = br.read(22)?;
174 validate!(syncw == 0x000020);
175 let tr = (br.read(8)? << 8) as u16;
177 let id = br.read(1)?;
179 br.read(1)?; // split screen indicator
180 br.read(1)?; // document camera indicator
181 br.read(1)?; // freeze picture release
182 let mut sfmt = br.read(3)?;
183 validate!(sfmt != 0b000);
184 let is_intra = !br.read_bool()?;
185 let umv = br.read_bool()?;
186 br.read(1)?; // syntax arithmetic coding
187 let apm = br.read_bool()?;
188 self.is_pb = br.read_bool()?;
194 validate!(sfmt != 0b000 && sfmt != 0b110);
195 aic = br.read_bool()?;
196 br.read(1)?; // umv mode
197 deblock = br.read_bool()?;
198 br.read(3)?; // unknown flags
199 pbplus = br.read_bool()?;
200 br.read(4)?; // unknown flags
206 self.is_ipb = pbplus;
207 let (w, h) = match sfmt {
214 validate!((self.ref_w != 0) && (self.ref_h != 0));
215 ((self.ref_w + 15) & !15, (self.ref_h + 15) & !15)
217 _ => return Err(DecoderError::InvalidData),
219 let quant = br.read(5)?;
220 let cpm = br.read_bool()?;
225 let trb = br.read(3)?;
226 let dbquant = br.read(2)?;
227 pbinfo = Some(PBInfo::new(trb as u8, dbquant as u8, pbplus));
231 while br.read_bool()? { // skip PEI
235 self.mb_w = (w + 15) >> 4;
238 let ftype = if is_intra { Type::I } else { Type::P };
239 let plusinfo = Some(PlusInfo::new(aic, deblock, false, false));
240 let mvmode = if umv { MVMode::UMV } else { MVMode::Old };
241 let picinfo = PicInfo::new(w, h, ftype, mvmode, umv, apm, quant as u8, tr, pbinfo, plusinfo);
245 #[allow(unused_variables)]
246 fn decode_slice_header(&mut self, info: &PicInfo) -> DecoderResult<SliceInfo> {
247 let br = &mut self.br;
248 let gbsc = br.read(17)?;
249 validate!(gbsc == 1);
250 let gn = br.read(5)?;
251 let gfid = br.read(2)?;
252 let gquant = br.read(5)?;
253 let ret = SliceInfo::new_gob(0, self.gob_no, gquant as u8);
258 #[allow(unused_variables)]
259 fn decode_block_header(&mut self, info: &PicInfo, slice: &SliceInfo, sstate: &SliceState) -> DecoderResult<BlockInfo> {
260 let br = &mut self.br;
261 let mut q = slice.get_quant();
262 match info.get_mode() {
264 let mut cbpc = br.read_cb(&self.tables.intra_mcbpc_cb)?;
265 while cbpc == 8 { cbpc = br.read_cb(&self.tables.intra_mcbpc_cb)?; }
266 let mut acpred = ACPredMode::None;
267 if let Some(ref pi) = info.plusinfo {
269 let acpp = br.read_bool()?;
270 acpred = ACPredMode::DC;
272 acpred = if !br.read_bool()? { ACPredMode::Hor } else { ACPredMode::Ver };
276 let cbpy = br.read_cb(&self.tables.cbpy_cb)?;
277 let cbp = (cbpy << 2) | (cbpc & 3);
278 let dquant = (cbpc & 4) != 0;
280 let idx = br.read(2)? as usize;
281 q = (i16::from(q) + i16::from(H263_DQUANT_TAB[idx])) as u8;
283 let mut binfo = BlockInfo::new(Type::I, cbp, q);
284 binfo.set_acpred(acpred);
288 if br.read_bool()? { return Ok(BlockInfo::new(Type::Skip, 0, info.get_quant())); }
289 let mut cbpc = br.read_cb(&self.tables.inter_mcbpc_cb)?;
290 while cbpc == 20 { cbpc = br.read_cb(&self.tables.inter_mcbpc_cb)?; }
291 let is_intra = (cbpc & 0x04) != 0;
292 let dquant = (cbpc & 0x08) != 0;
293 let is_4x4 = (cbpc & 0x10) != 0;
295 let mut acpred = ACPredMode::None;
296 if let Some(ref pi) = info.plusinfo {
298 let acpp = br.read_bool()?;
299 acpred = ACPredMode::DC;
301 acpred = if !br.read_bool()? { ACPredMode::Hor } else { ACPredMode::Ver };
305 let mut mvec: Vec<MV> = Vec::new();
306 let bbinfo = decode_b_info(br, self.is_pb, self.is_ipb, true)?;
307 let cbpy = br.read_cb(&self.tables.cbpy_cb)?;
308 let cbp = (cbpy << 2) | (cbpc & 3);
310 let idx = br.read(2)? as usize;
311 q = (i16::from(q) + i16::from(H263_DQUANT_TAB[idx])) as u8;
313 let mut binfo = BlockInfo::new(Type::I, cbp, q);
314 binfo.set_bpart(bbinfo);
315 binfo.set_acpred(acpred);
317 for _ in 0..bbinfo.get_num_mv() {
318 mvec.push(decode_mv(br, &self.tables.mv_cb)?);
320 binfo.set_b_mv(mvec.as_slice());
325 let bbinfo = decode_b_info(br, self.is_pb, self.is_ipb, false)?;
326 let mut cbpy = br.read_cb(&self.tables.cbpy_cb)?;
327 // if /* !aiv && */(cbpc & 3) != 3 {
330 let cbp = (cbpy << 2) | (cbpc & 3);
332 let idx = br.read(2)? as usize;
333 q = (i16::from(q) + i16::from(H263_DQUANT_TAB[idx])) as u8;
335 let mut binfo = BlockInfo::new(Type::P, cbp, q);
336 binfo.set_bpart(bbinfo);
338 let mvec: [MV; 1] = [decode_mv(br, &self.tables.mv_cb)?];
341 let mvec: [MV; 4] = [
342 decode_mv(br, &self.tables.mv_cb)?,
343 decode_mv(br, &self.tables.mv_cb)?,
344 decode_mv(br, &self.tables.mv_cb)?,
345 decode_mv(br, &self.tables.mv_cb)?
350 let mut mvec: Vec<MV> = Vec::with_capacity(bbinfo.get_num_mv());
351 for _ in 0..bbinfo.get_num_mv() {
352 let mv = decode_mv(br, &self.tables.mv_cb)?;
355 binfo.set_b_mv(mvec.as_slice());
359 _ => Err(DecoderError::InvalidData),
363 #[allow(unused_variables)]
364 fn decode_block_intra(&mut self, info: &BlockInfo, _sstate: &SliceState, quant: u8, no: usize, coded: bool, blk: &mut [i16; 64]) -> DecoderResult<()> {
365 self.decode_block(quant, true, coded, blk, if no < 4 { 0 } else { no - 3 }, info.get_acpred())
368 #[allow(unused_variables)]
369 fn decode_block_inter(&mut self, info: &BlockInfo, _sstate: &SliceState, quant: u8, no: usize, coded: bool, blk: &mut [i16; 64]) -> DecoderResult<()> {
370 self.decode_block(quant, false, coded, blk, if no < 4 { 0 } else { no - 3 }, ACPredMode::None)
373 fn is_slice_end(&mut self) -> bool { self.br.peek(16) == 0 }
378 let mut coderead = H263ShortCodeReader::new(H263_INTRA_MCBPC);
379 let intra_mcbpc_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap();
380 let mut coderead = H263ShortCodeReader::new(H263_INTER_MCBPC);
381 let inter_mcbpc_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap();
382 let mut coderead = H263ShortCodeReader::new(H263_CBPY);
383 let cbpy_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap();
384 let mut coderead = H263RLCodeReader::new(H263_RL_CODES);
385 let rl_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap();
386 let mut coderead = H263RLCodeReader::new(H263_RL_CODES_AIC);
387 let aic_rl_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap();
388 let mut coderead = H263ShortCodeReader::new(H263_MV);
389 let mv_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap();
390 let tables = Tables {
400 info: NACodecInfo::new_dummy(),
401 dec: H263BaseDecoder::new(true),
403 bdsp: H263BlockDSP::new(),
412 impl NADecoder for VivoDecoder {
413 fn init(&mut self, _supp: &mut NADecoderSupport, info: NACodecInfoRef) -> DecoderResult<()> {
414 if let NACodecTypeInfo::Video(vinfo) = info.get_properties() {
415 let w = vinfo.get_width();
416 let h = vinfo.get_height();
417 let fmt = formats::YUV420_FORMAT;
418 let myinfo = NACodecTypeInfo::Video(NAVideoInfo::new(w, h, false, fmt));
419 self.info = NACodecInfo::new_ref(info.get_name(), myinfo, info.get_extradata()).into_ref();
424 Err(DecoderError::InvalidData)
427 fn decode(&mut self, _supp: &mut NADecoderSupport, pkt: &NAPacket) -> DecoderResult<NAFrameRef> {
428 let src = pkt.get_buffer();
433 if self.lastframe.is_none() {
434 buftype = NABufferType::None;
435 ftype = FrameType::Skip;
438 std::mem::swap(&mut self.lastframe, &mut buf);
439 buftype = buf.unwrap();
440 ftype = FrameType::B;
442 let mut frm = NAFrame::new_from_pkt(pkt, self.info.clone(), buftype);
443 frm.set_keyframe(false);
444 frm.set_frame_type(ftype);
445 if self.lastpts.is_some() {
446 frm.set_pts(self.lastpts);
449 return Ok(frm.into_ref());
451 let mut ibr = VivoBR::new(&src, &self.tables, self.width, self.height);
453 let bufinfo = self.dec.parse_frame(&mut ibr, &self.bdsp)?;
455 let mut cur_pts = pkt.get_pts();
456 if !self.dec.is_intra() {
457 let bret = self.dec.get_bframe(&self.bdsp);
458 if let Ok(b_buf) = bret {
459 self.lastframe = Some(b_buf);
460 self.lastpts = pkt.get_pts();
461 if let Some(pts) = pkt.get_pts() {
462 cur_pts = Some(pts + 1);
467 let mut frm = NAFrame::new_from_pkt(pkt, self.info.clone(), bufinfo);
468 frm.set_keyframe(self.dec.is_intra());
469 frm.set_frame_type(if self.dec.is_intra() { FrameType::I } else { FrameType::P });
470 frm.set_pts(cur_pts);
473 fn flush(&mut self) {
478 impl NAOptionHandler for VivoDecoder {
479 fn get_supported_options(&self) -> &[NAOptionDefinition] { &[] }
480 fn set_options(&mut self, _options: &[NAOption]) { }
481 fn query_option_value(&self, _name: &str) -> Option<NAValue> { None }
485 pub fn get_decoder() -> Box<dyn NADecoder + Send> {
486 Box::new(VivoDecoder::new())
491 use nihav_core::codecs::RegisteredDecoders;
492 use nihav_core::demuxers::RegisteredDemuxers;
493 use nihav_codec_support::test::dec_video::*;
494 use crate::vivo_register_all_codecs;
495 use crate::vivo_register_all_demuxers;
498 let mut dmx_reg = RegisteredDemuxers::new();
499 vivo_register_all_demuxers(&mut dmx_reg);
500 let mut dec_reg = RegisteredDecoders::new();
501 vivo_register_all_codecs(&mut dec_reg);
503 test_file_decoding("vivo", "assets/Misc/gr_al.viv", Some(16), true, false, Some("viv1"), &dmx_reg, &dec_reg);
504 // test_decoding("vivo", "vivo1", "assets/Misc/gr_al.viv", Some(16),
505 // &dmx_reg, &dec_reg, ExpectedTestResult::GenerateMD5Frames));
509 let mut dmx_reg = RegisteredDemuxers::new();
510 vivo_register_all_demuxers(&mut dmx_reg);
511 let mut dec_reg = RegisteredDecoders::new();
512 vivo_register_all_codecs(&mut dec_reg);
514 test_file_decoding("vivo", "assets/Misc/02-KimagureOrangeRoad.viv", Some(50), true, false, Some("viv2"), &dmx_reg, &dec_reg);
516 // test_decoding("vivo", "vivo2", "assets/Misc/greetings.viv", Some(16),
517 // &dmx_reg, &dec_reg, ExpectedTestResult::GenerateMD5Frames));