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Commit | Line | Data |
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5641dccf KS |
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::*; | |
b4d5b851 | 6 | use nihav_codec_support::codecs::{MV, ZIGZAG}; |
5c75af61 | 7 | use nihav_codec_support::codecs::blockdsp; |
b4d5b851 | 8 | use nihav_codec_support::codecs::h263::*; |
5c75af61 | 9 | use nihav_codec_support::codecs::h263::code::{H263_INTERP_FUNCS, H263_INTERP_AVG_FUNCS, h263_filter_row}; |
b4d5b851 KS |
10 | use nihav_codec_support::codecs::h263::decoder::*; |
11 | use nihav_codec_support::codecs::h263::data::*; | |
5641dccf | 12 | |
be91b1c3 KS |
13 | |
14 | #[allow(dead_code)] | |
15 | struct Tables { | |
16 | intra_mcbpc_cb: Codebook<u8>, | |
17 | inter_mcbpc_cb: Codebook<u8>, | |
507f4b11 | 18 | mbtype_b_cb: Codebook<u8>, |
be91b1c3 | 19 | cbpy_cb: Codebook<u8>, |
507f4b11 | 20 | cbpc_b_cb: Codebook<u8>, |
be91b1c3 KS |
21 | rl_cb: Codebook<H263RLSym>, |
22 | aic_rl_cb: Codebook<H263RLSym>, | |
23 | mv_cb: Codebook<u8>, | |
24 | } | |
25 | ||
26 | #[derive(Clone,Copy)] | |
27 | struct RPRInfo { | |
28 | present: bool, | |
29 | bits: u8, | |
30 | widths: [usize; 8], | |
31 | heights: [usize; 8], | |
32 | } | |
33 | ||
34 | struct RealVideo20Decoder { | |
2422d969 | 35 | info: NACodecInfoRef, |
be91b1c3 KS |
36 | dec: H263BaseDecoder, |
37 | tables: Tables, | |
38 | w: usize, | |
39 | h: usize, | |
40 | minor_ver: u8, | |
41 | rpr: RPRInfo, | |
5c75af61 | 42 | bdsp: Box<dyn BlockDSP + Send>, |
5ce3689c KS |
43 | base_ts: u64, |
44 | last_ts: u16, | |
45 | next_ts: u16, | |
be91b1c3 KS |
46 | } |
47 | ||
48 | struct RealVideo20BR<'a> { | |
49 | br: BitReader<'a>, | |
50 | tables: &'a Tables, | |
51 | num_slices: usize, | |
52 | slice_no: usize, | |
53 | slice_off: Vec<u32>, | |
54 | w: usize, | |
55 | h: usize, | |
56 | mb_w: usize, | |
57 | mb_h: usize, | |
be91b1c3 | 58 | mb_pos_bits: u8, |
be91b1c3 KS |
59 | minor_ver: u8, |
60 | rpr: RPRInfo, | |
5ce3689c | 61 | pts: u16, |
be91b1c3 KS |
62 | } |
63 | ||
64 | struct RV20SliceInfo { | |
65 | ftype: Type, | |
32007ad9 | 66 | seq: u32, |
be91b1c3 KS |
67 | qscale: u8, |
68 | mb_x: usize, | |
69 | mb_y: usize, | |
70 | mb_pos: usize, | |
71 | w: usize, | |
72 | h: usize, | |
73 | } | |
74 | ||
5c75af61 KS |
75 | #[derive(Default)] |
76 | struct RV20BlockDSP {} | |
77 | ||
be91b1c3 | 78 | impl RV20SliceInfo { |
32007ad9 | 79 | fn new(ftype: Type, seq: u32, qscale: u8, mb_x: usize, mb_y: usize, mb_pos: usize, w: usize, h: usize) -> Self { |
e07387c7 | 80 | RV20SliceInfo { ftype, seq, qscale, mb_x, mb_y, mb_pos, w, h } |
be91b1c3 KS |
81 | } |
82 | } | |
83 | ||
5c75af61 KS |
84 | macro_rules! idct { |
85 | ($src: expr, $sstep: expr, $dst: expr, $dstep: expr, $bias: expr, $shift: expr, $dtype: tt) => { | |
86 | let s0 = $src[0] as i32; | |
87 | let s1 = $src[$sstep] as i32; | |
88 | let s2 = $src[$sstep * 2] as i32; | |
89 | let s3 = $src[$sstep * 3] as i32; | |
90 | let s4 = $src[$sstep * 4] as i32; | |
91 | let s5 = $src[$sstep * 5] as i32; | |
92 | let s6 = $src[$sstep * 6] as i32; | |
93 | let s7 = $src[$sstep * 7] as i32; | |
94 | ||
95 | let t0 = (s0 + s4).wrapping_mul(1448); | |
96 | let t1 = (s0 - s4).wrapping_mul(1448); | |
97 | let t2 = s2.wrapping_mul(1892) + s6.wrapping_mul(784); | |
98 | let t3 = s2.wrapping_mul(784) - s6.wrapping_mul(1892); | |
99 | let t4 = s1.wrapping_mul(2009) + s3.wrapping_mul(1703) | |
100 | + s5.wrapping_mul(1138) + s7.wrapping_mul(400); | |
101 | let t5 = s1.wrapping_mul(1703) - s3.wrapping_mul(400) | |
102 | - s5.wrapping_mul(2009) - s7.wrapping_mul(1138); | |
103 | let t6 = s1.wrapping_mul(1138) - s3.wrapping_mul(2009) | |
104 | + s5.wrapping_mul(400) + s7.wrapping_mul(1703); | |
105 | let t7 = s1.wrapping_mul(400) - s3.wrapping_mul(1138) | |
106 | + s5.wrapping_mul(1703) - s7.wrapping_mul(2009); | |
107 | ||
108 | let t8 = t0 + t2; | |
109 | let t9 = t0 - t2; | |
110 | let ta = t1 + t3; | |
111 | let tb = t1 - t3; | |
112 | ||
113 | $dst[0] = ((t8 + t4 + $bias) >> $shift) as $dtype; | |
114 | $dst[$dstep] = ((ta + t5 + $bias) >> $shift) as $dtype; | |
115 | $dst[$dstep * 2] = ((tb + t6 + $bias) >> $shift) as $dtype; | |
116 | $dst[$dstep * 3] = ((t9 + t7 + $bias) >> $shift) as $dtype; | |
117 | $dst[$dstep * 4] = ((t9 - t7 + $bias) >> $shift) as $dtype; | |
118 | $dst[$dstep * 5] = ((tb - t6 + $bias) >> $shift) as $dtype; | |
119 | $dst[$dstep * 6] = ((ta - t5 + $bias) >> $shift) as $dtype; | |
120 | $dst[$dstep * 7] = ((t8 - t4 + $bias) >> $shift) as $dtype; | |
121 | } | |
122 | } | |
123 | ||
124 | impl BlockDSP for RV20BlockDSP { | |
125 | fn idct(&self, blk: &mut [i16; 64]) { | |
126 | let mut tmp = [0i32; 64]; | |
127 | for (dst, src) in tmp.chunks_mut(8).zip(blk.chunks(8)) { | |
128 | idct!(src, 1, dst, 1, 0, 4, i32); | |
129 | } | |
130 | for i in 0..8 { | |
131 | idct!(&tmp[i..], 8, &mut blk[i..], 8, 1 << 19, 20, i16); | |
132 | } | |
133 | } | |
134 | fn copy_blocks(&self, dst: &mut NAVideoBuffer<u8>, src: &NAVideoBuffer<u8>, xpos: usize, ypos: usize, w: usize, h: usize, mv: MV) { | |
135 | let srcx = ((mv.x >> 1) as isize) + (xpos as isize); | |
136 | let srcy = ((mv.y >> 1) as isize) + (ypos as isize); | |
137 | let mode = ((mv.x & 1) + (mv.y & 1) * 2) as usize; | |
138 | ||
139 | blockdsp::copy_blocks(dst, src, xpos, ypos, srcx, srcy, w, h, 0, 1, mode, H263_INTERP_FUNCS); | |
140 | } | |
141 | fn avg_blocks(&self, dst: &mut NAVideoBuffer<u8>, src: &NAVideoBuffer<u8>, xpos: usize, ypos: usize, w: usize, h: usize, mv: MV) { | |
142 | let srcx = ((mv.x >> 1) as isize) + (xpos as isize); | |
143 | let srcy = ((mv.y >> 1) as isize) + (ypos as isize); | |
144 | let mode = ((mv.x & 1) + (mv.y & 1) * 2) as usize; | |
145 | ||
146 | blockdsp::copy_blocks(dst, src, xpos, ypos, srcx, srcy, w, h, 0, 1, mode, H263_INTERP_AVG_FUNCS); | |
147 | } | |
148 | fn filter_row(&self, buf: &mut NAVideoBuffer<u8>, mb_y: usize, mb_w: usize, cbpi: &CBPInfo) { | |
149 | h263_filter_row(buf, mb_y, mb_w, cbpi) | |
150 | } | |
151 | } | |
152 | ||
be91b1c3 KS |
153 | impl<'a> RealVideo20BR<'a> { |
154 | fn new(src: &'a [u8], tables: &'a Tables, width: usize, height: usize, minor_ver: u8, rpr: RPRInfo) -> Self { | |
155 | let nslices = (src[0] as usize) + 1; | |
156 | let mut slice_offs = Vec::with_capacity(nslices); | |
157 | { | |
158 | let offs = &src[1..][..nslices * 8]; | |
fa90ccfb | 159 | let mut br = BitReader::new(offs, BitReaderMode::BE); |
be91b1c3 KS |
160 | for _ in 0..nslices { |
161 | br.skip(32).unwrap(); | |
162 | let off = br.read(32).unwrap(); | |
163 | slice_offs.push(off); | |
164 | } | |
165 | } | |
166 | let soff = nslices * 8 + 1; | |
167 | let mb_w = (width + 15) >> 4; | |
168 | let mb_h = (height + 15) >> 4; | |
169 | let max_pos = mb_w * mb_h - 1; | |
170 | let mut mbpb = 0; | |
171 | for i in 0..H263_MBB.len() { | |
172 | if max_pos <= H263_MBB[i].blocks { | |
173 | mbpb = H263_MBB[i].bits; | |
174 | break; | |
175 | } | |
176 | } | |
177 | RealVideo20BR { | |
fa90ccfb | 178 | br: BitReader::new(&src[soff..], BitReaderMode::BE), |
e07387c7 | 179 | tables, |
be91b1c3 KS |
180 | num_slices: nslices, |
181 | slice_no: 0, | |
182 | slice_off: slice_offs, | |
183 | w: width, | |
184 | h: height, | |
e07387c7 KS |
185 | mb_w, |
186 | mb_h, | |
be91b1c3 | 187 | mb_pos_bits: mbpb, |
e07387c7 KS |
188 | minor_ver, |
189 | rpr, | |
5ce3689c | 190 | pts: 0, |
be91b1c3 KS |
191 | } |
192 | } | |
193 | ||
2a2aa421 | 194 | #[allow(unused_variables)] |
0c3b4923 | 195 | fn decode_block(&mut self, sstate: &SliceState, quant: u8, intra: bool, coded: bool, blk: &mut [i16; 64], plane_no: usize, acpred: ACPredMode) -> DecoderResult<()> { |
9037cf6b | 196 | let br = &mut self.br; |
be91b1c3 | 197 | let mut idx = 0; |
2a2aa421 | 198 | if !sstate.is_iframe && intra { |
fc26b944 | 199 | let mut dc = br.read(8)? as i16; |
be91b1c3 KS |
200 | if dc == 255 { dc = 128; } |
201 | blk[0] = dc << 3; | |
202 | idx = 1; | |
203 | } | |
204 | if !coded { return Ok(()); } | |
0c3b4923 KS |
205 | let scan = match acpred { |
206 | ACPredMode::Hor => H263_SCAN_V, | |
207 | ACPredMode::Ver => H263_SCAN_H, | |
64e8b971 | 208 | _ => &ZIGZAG, |
0c3b4923 | 209 | }; |
be91b1c3 | 210 | |
2a2aa421 | 211 | let rl_cb = if sstate.is_iframe { &self.tables.aic_rl_cb } else { &self.tables.rl_cb }; |
7f73eeee KS |
212 | let q = if plane_no == 0 { (quant * 2) as i16 } else { (H263_CHROMA_QUANT[quant as usize] * 2) as i16 }; |
213 | let q_add = if q == 0 || sstate.is_iframe { 0i16 } else { (((q >> 1) - 1) | 1) as i16 }; | |
be91b1c3 | 214 | while idx < 64 { |
fc26b944 | 215 | let code = br.read_cb(rl_cb)?; |
be91b1c3 KS |
216 | let run; |
217 | let mut level; | |
218 | let last; | |
219 | if !code.is_escape() { | |
220 | run = code.get_run(); | |
221 | level = code.get_level(); | |
222 | last = code.is_last(); | |
fc26b944 | 223 | if br.read_bool()? { level = -level; } |
7f73eeee KS |
224 | if level >= 0 { |
225 | level = (level * q) + q_add; | |
226 | } else { | |
227 | level = (level * q) - q_add; | |
228 | } | |
be91b1c3 | 229 | } else { |
fc26b944 KS |
230 | last = br.read_bool()?; |
231 | run = br.read(6)? as u8; | |
232 | level = br.read_s(8)? as i16; | |
be91b1c3 | 233 | if level == -128 { |
fc26b944 KS |
234 | let low = br.read(5)? as i16; |
235 | let top = br.read_s(6)? as i16; | |
be91b1c3 KS |
236 | level = (top << 5) | low; |
237 | } | |
7f73eeee KS |
238 | if level >= 0 { |
239 | level = (level * q) + q_add; | |
240 | } else { | |
241 | level = (level * q) - q_add; | |
242 | } | |
be91b1c3 KS |
243 | if level < -2048 { level = -2048; } |
244 | if level > 2047 { level = 2047; } | |
245 | } | |
246 | idx += run; | |
247 | validate!(idx < 64); | |
0c3b4923 | 248 | let oidx = scan[idx as usize]; |
be91b1c3 KS |
249 | blk[oidx] = level; |
250 | idx += 1; | |
251 | if last { break; } | |
252 | } | |
253 | Ok(()) | |
254 | } | |
255 | } | |
256 | ||
257 | fn decode_mv_component(br: &mut BitReader, mv_cb: &Codebook<u8>) -> DecoderResult<i16> { | |
fc26b944 | 258 | let code = br.read_cb(mv_cb)? as i16; |
be91b1c3 | 259 | if code == 0 { return Ok(0) } |
fc26b944 | 260 | if !br.read_bool()? { |
be91b1c3 KS |
261 | Ok(code) |
262 | } else { | |
263 | Ok(-code) | |
264 | } | |
265 | } | |
266 | ||
267 | fn decode_mv(br: &mut BitReader, mv_cb: &Codebook<u8>) -> DecoderResult<MV> { | |
fc26b944 KS |
268 | let xval = decode_mv_component(br, mv_cb)?; |
269 | let yval = decode_mv_component(br, mv_cb)?; | |
be91b1c3 KS |
270 | Ok(MV::new(xval, yval)) |
271 | } | |
272 | ||
43c8b55e KS |
273 | fn read_dquant(br: &mut BitReader, q: u8) -> DecoderResult<u8> { |
274 | if br.read_bool()? { | |
275 | Ok(H263_MODIFIED_QUANT[br.read(1)? as usize][q as usize]) | |
276 | } else { | |
277 | Ok(br.read(5)? as u8) | |
278 | } | |
279 | } | |
280 | ||
be91b1c3 KS |
281 | impl<'a> BlockDecoder for RealVideo20BR<'a> { |
282 | ||
283 | #[allow(unused_variables)] | |
284 | fn decode_pichdr(&mut self) -> DecoderResult<PicInfo> { | |
285 | self.slice_no = 0; | |
fc26b944 | 286 | let shdr = self.read_slice_header()?; |
2a2aa421 | 287 | // self.slice_no += 1; |
be91b1c3 | 288 | validate!((shdr.mb_x == 0) && (shdr.mb_y == 0)); |
2a2aa421 | 289 | /* let mb_count; |
be91b1c3 KS |
290 | if self.slice_no < self.num_slices { |
291 | let pos = self.br.tell(); | |
fc26b944 | 292 | let shdr2 = self.read_slice_header()?; |
be91b1c3 KS |
293 | self.br.seek(pos as u32)?; |
294 | mb_count = shdr2.mb_pos - shdr.mb_pos; | |
295 | } else { | |
296 | mb_count = self.mb_w * self.mb_h; | |
2a2aa421 | 297 | }*/ |
be91b1c3 | 298 | |
0c3b4923 | 299 | let plusinfo = Some(PlusInfo::new(shdr.ftype == Type::I, false, false, false)); |
32007ad9 | 300 | let picinfo = PicInfo::new(shdr.w, shdr.h, shdr.ftype, MVMode::Long, false, false, shdr.qscale, shdr.seq as u16, None, plusinfo); |
be91b1c3 KS |
301 | Ok(picinfo) |
302 | } | |
303 | ||
304 | #[allow(unused_variables)] | |
2a2aa421 | 305 | fn decode_slice_header(&mut self, info: &PicInfo) -> DecoderResult<SliceInfo> { |
fc26b944 | 306 | let shdr = self.read_slice_header()?; |
be91b1c3 KS |
307 | self.slice_no += 1; |
308 | let mb_count; | |
309 | if self.slice_no < self.num_slices { | |
0c3b4923 | 310 | let pos = self.br.tell(); |
fc26b944 | 311 | let shdr2 = self.read_slice_header()?; |
be91b1c3 | 312 | mb_count = shdr2.mb_pos - shdr.mb_pos; |
0c3b4923 | 313 | self.br.seek(pos as u32)?; |
be91b1c3 KS |
314 | } else { |
315 | mb_count = self.mb_w * self.mb_h - shdr.mb_pos; | |
316 | } | |
2a2aa421 | 317 | let ret = SliceInfo::new(shdr.mb_x, shdr.mb_y, shdr.mb_pos + mb_count, shdr.qscale); |
be91b1c3 KS |
318 | |
319 | Ok(ret) | |
320 | } | |
321 | ||
43c8b55e | 322 | fn decode_block_header(&mut self, info: &PicInfo, _slice: &SliceInfo, sstate: &SliceState) -> DecoderResult<BlockInfo> { |
9037cf6b | 323 | let br = &mut self.br; |
43c8b55e | 324 | let mut q = sstate.quant; |
be91b1c3 KS |
325 | match info.get_mode() { |
326 | Type::I => { | |
fc26b944 KS |
327 | let mut cbpc = br.read_cb(&self.tables.intra_mcbpc_cb)?; |
328 | while cbpc == 8 { cbpc = br.read_cb(&self.tables.intra_mcbpc_cb)?; } | |
0c3b4923 KS |
329 | let mut acpred = ACPredMode::None; |
330 | if let Some(ref pi) = info.plusinfo { | |
331 | if pi.aic { | |
332 | let acpp = br.read_bool()?; | |
333 | acpred = ACPredMode::DC; | |
0c3b4923 KS |
334 | if acpp { |
335 | acpred = if br.read_bool()? { ACPredMode::Hor } else { ACPredMode::Ver }; | |
336 | } | |
337 | } | |
0c3b4923 | 338 | } |
fc26b944 | 339 | let cbpy = br.read_cb(&self.tables.cbpy_cb)?; |
be91b1c3 KS |
340 | let cbp = (cbpy << 2) | (cbpc & 3); |
341 | let dquant = (cbpc & 4) != 0; | |
342 | if dquant { | |
43c8b55e | 343 | q = read_dquant(br, q)?; |
be91b1c3 | 344 | } |
0c3b4923 KS |
345 | let mut binfo = BlockInfo::new(Type::I, cbp, q); |
346 | binfo.set_acpred(acpred); | |
347 | Ok(binfo) | |
be91b1c3 KS |
348 | }, |
349 | Type::P => { | |
fc26b944 | 350 | if br.read_bool()? { |
be91b1c3 KS |
351 | return Ok(BlockInfo::new(Type::Skip, 0, info.get_quant())); |
352 | } | |
fc26b944 KS |
353 | let mut cbpc = br.read_cb(&self.tables.inter_mcbpc_cb)?; |
354 | while cbpc == 20 { cbpc = br.read_cb(&self.tables.inter_mcbpc_cb)?; } | |
be91b1c3 KS |
355 | let is_intra = (cbpc & 0x04) != 0; |
356 | let dquant = (cbpc & 0x08) != 0; | |
357 | let is_4x4 = (cbpc & 0x10) != 0; | |
358 | if is_intra { | |
fc26b944 | 359 | let cbpy = br.read_cb(&self.tables.cbpy_cb)?; |
be91b1c3 KS |
360 | let cbp = (cbpy << 2) | (cbpc & 3); |
361 | if dquant { | |
43c8b55e | 362 | q = read_dquant(br, q)?; |
be91b1c3 KS |
363 | } |
364 | let binfo = BlockInfo::new(Type::I, cbp, q); | |
be91b1c3 KS |
365 | return Ok(binfo); |
366 | } | |
367 | ||
fc26b944 | 368 | let mut cbpy = br.read_cb(&self.tables.cbpy_cb)?; |
be91b1c3 KS |
369 | // if /* !aiv && */(cbpc & 3) != 3 { |
370 | cbpy ^= 0xF; | |
371 | // } | |
372 | let cbp = (cbpy << 2) | (cbpc & 3); | |
373 | if dquant { | |
43c8b55e | 374 | q = read_dquant(br, q)?; |
be91b1c3 | 375 | } |
be91b1c3 KS |
376 | let mut binfo = BlockInfo::new(Type::P, cbp, q); |
377 | if !is_4x4 { | |
fc26b944 | 378 | let mvec: [MV; 1] = [decode_mv(br, &self.tables.mv_cb)?]; |
be91b1c3 KS |
379 | binfo.set_mv(&mvec); |
380 | } else { | |
381 | let mvec: [MV; 4] = [ | |
fc26b944 KS |
382 | decode_mv(br, &self.tables.mv_cb)?, |
383 | decode_mv(br, &self.tables.mv_cb)?, | |
384 | decode_mv(br, &self.tables.mv_cb)?, | |
385 | decode_mv(br, &self.tables.mv_cb)? | |
be91b1c3 KS |
386 | ]; |
387 | binfo.set_mv(&mvec); | |
388 | } | |
be91b1c3 KS |
389 | Ok(binfo) |
390 | }, | |
32007ad9 | 391 | Type::B => { // B |
507f4b11 KS |
392 | let mut mbtype = br.read_cb(&self.tables.mbtype_b_cb)? as usize; |
393 | while mbtype == 14 { mbtype = br.read_cb(&self.tables.mbtype_b_cb)? as usize; } | |
394 | ||
395 | let is_coded = (H263_MBTYPE_B_CAPS[mbtype] & H263_MBB_CAP_CODED) != 0; | |
396 | let is_intra = (H263_MBTYPE_B_CAPS[mbtype] & H263_MBB_CAP_INTRA) != 0; | |
397 | let dquant = (H263_MBTYPE_B_CAPS[mbtype] & H263_MBB_CAP_DQUANT) != 0; | |
398 | let is_fwd = (H263_MBTYPE_B_CAPS[mbtype] & H263_MBB_CAP_FORWARD) != 0; | |
399 | let is_bwd = (H263_MBTYPE_B_CAPS[mbtype] & H263_MBB_CAP_BACKWARD) != 0; | |
400 | ||
401 | let cbp = if is_coded { | |
402 | let cbpc = br.read_cb(&self.tables.cbpc_b_cb)?; | |
403 | let mut cbpy = br.read_cb(&self.tables.cbpy_cb)?; | |
404 | if !is_intra { cbpy ^= 0xF; } | |
405 | (cbpy << 2) | (cbpc & 3) | |
406 | } else { 0 }; | |
1a151e53 | 407 | |
507f4b11 | 408 | if dquant { |
43c8b55e | 409 | q = read_dquant(br, q)?; |
507f4b11 | 410 | } |
507f4b11 KS |
411 | |
412 | if is_intra { | |
413 | let binfo = BlockInfo::new(Type::I, cbp, q); | |
414 | return Ok(binfo); | |
415 | } | |
416 | ||
417 | let mut binfo = BlockInfo::new(Type::B, cbp, q); | |
418 | if is_fwd { | |
419 | let mvec: [MV; 1] = [decode_mv(br, &self.tables.mv_cb)?]; | |
420 | binfo.set_mv(&mvec); | |
421 | } | |
422 | if is_bwd { | |
423 | let mvec: [MV; 1] = [decode_mv(br, &self.tables.mv_cb)?]; | |
424 | binfo.set_b_mv(&mvec); | |
425 | } | |
426 | Ok(binfo) | |
427 | }, | |
32007ad9 | 428 | _ => { unreachable!(); }, |
be91b1c3 KS |
429 | } |
430 | } | |
431 | ||
2a2aa421 | 432 | fn decode_block_intra(&mut self, info: &BlockInfo, sstate: &SliceState, quant: u8, no: usize, coded: bool, blk: &mut [i16; 64]) -> DecoderResult<()> { |
0c3b4923 | 433 | self.decode_block(sstate, quant, true, coded, blk, if no < 4 { 0 } else { no - 3 }, info.get_acpred()) |
be91b1c3 KS |
434 | } |
435 | ||
436 | #[allow(unused_variables)] | |
2a2aa421 | 437 | fn decode_block_inter(&mut self, info: &BlockInfo, sstate: &SliceState, quant: u8, no: usize, coded: bool, blk: &mut [i16; 64]) -> DecoderResult<()> { |
0c3b4923 | 438 | self.decode_block(sstate, quant, false, coded, blk, if no < 4 { 0 } else { no - 3 }, ACPredMode::None) |
be91b1c3 KS |
439 | } |
440 | ||
2a2aa421 | 441 | fn is_slice_end(&mut self) -> bool { false } |
be91b1c3 KS |
442 | } |
443 | ||
444 | impl<'a> RealVideo20BR<'a> { | |
2a2aa421 | 445 | #[allow(unused_variables)] |
be91b1c3 KS |
446 | fn read_slice_header(&mut self) -> DecoderResult<RV20SliceInfo> { |
447 | validate!(self.slice_no < self.num_slices); | |
448 | ||
9037cf6b | 449 | let br = &mut self.br; |
fc26b944 | 450 | br.seek(self.slice_off[self.slice_no] * 8)?; |
be91b1c3 | 451 | |
fc26b944 | 452 | let frm_type = br.read(2)?; |
be91b1c3 KS |
453 | let ftype = match frm_type { |
454 | 0 | 1 => { Type::I }, | |
455 | 2 => { Type::P }, | |
507f4b11 | 456 | _ => { Type::B }, |
be91b1c3 KS |
457 | }; |
458 | ||
fc26b944 | 459 | let marker = br.read(1)?; |
be91b1c3 | 460 | validate!(marker == 0); |
fc26b944 | 461 | let qscale = br.read(5)? as u8; |
be91b1c3 KS |
462 | validate!(qscale > 0); |
463 | if self.minor_ver >= 2 { | |
fc26b944 | 464 | br.skip(1)?; // loop filter |
be91b1c3 KS |
465 | } |
466 | let seq = if self.minor_ver <= 1 { | |
32007ad9 | 467 | br.read(8)? << 8 |
be91b1c3 | 468 | } else { |
32007ad9 | 469 | br.read(13)? << 3 |
be91b1c3 | 470 | }; |
5ce3689c | 471 | self.pts = seq as u16; |
be91b1c3 KS |
472 | let w; |
473 | let h; | |
474 | if self.rpr.present { | |
fc26b944 | 475 | let rpr = br.read(self.rpr.bits)? as usize; |
be91b1c3 KS |
476 | if rpr == 0 { |
477 | w = self.w; | |
478 | h = self.h; | |
479 | } else { | |
7c37f176 KS |
480 | w = self.rpr.widths[rpr - 1]; |
481 | h = self.rpr.heights[rpr - 1]; | |
be91b1c3 KS |
482 | validate!((w != 0) && (h != 0)); |
483 | } | |
484 | } else { | |
485 | w = self.w; | |
486 | h = self.h; | |
487 | } | |
488 | ||
fc26b944 | 489 | let mb_pos = br.read(self.mb_pos_bits)? as usize; |
be91b1c3 KS |
490 | let mb_x = mb_pos % self.mb_w; |
491 | let mb_y = mb_pos / self.mb_w; | |
492 | ||
fc26b944 | 493 | br.skip(1)?; // no rounding |
be91b1c3 KS |
494 | |
495 | if (self.minor_ver <= 1) && (frm_type == 3) { | |
fc26b944 | 496 | br.skip(5)?; |
be91b1c3 | 497 | } |
be91b1c3 | 498 | |
32007ad9 | 499 | Ok(RV20SliceInfo::new(ftype, seq, qscale, mb_x, mb_y, mb_pos, w, h)) |
be91b1c3 KS |
500 | } |
501 | } | |
502 | ||
be91b1c3 KS |
503 | impl RealVideo20Decoder { |
504 | fn new() -> Self { | |
505 | let mut coderead = H263ShortCodeReader::new(H263_INTRA_MCBPC); | |
506 | let intra_mcbpc_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); | |
507 | let mut coderead = H263ShortCodeReader::new(H263_INTER_MCBPC); | |
508 | let inter_mcbpc_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); | |
507f4b11 KS |
509 | let mut coderead = H263ShortCodeReader::new(H263_MBTYPE_B); |
510 | let mbtype_b_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); | |
be91b1c3 KS |
511 | let mut coderead = H263ShortCodeReader::new(H263_CBPY); |
512 | let cbpy_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); | |
507f4b11 KS |
513 | let mut coderead = H263ShortCodeReader::new(H263_CBPC_B); |
514 | let cbpc_b_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); | |
be91b1c3 KS |
515 | let mut coderead = H263RLCodeReader::new(H263_RL_CODES); |
516 | let rl_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); | |
517 | let mut coderead = H263RLCodeReader::new(H263_RL_CODES_AIC); | |
518 | let aic_rl_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); | |
519 | let mut coderead = H263ShortCodeReader::new(H263_MV); | |
520 | let mv_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); | |
1a151e53 | 521 | |
be91b1c3 | 522 | let tables = Tables { |
e07387c7 KS |
523 | intra_mcbpc_cb, |
524 | inter_mcbpc_cb, | |
525 | mbtype_b_cb, | |
526 | cbpy_cb, | |
527 | cbpc_b_cb, | |
528 | rl_cb, | |
529 | aic_rl_cb, | |
530 | mv_cb, | |
be91b1c3 KS |
531 | }; |
532 | ||
533 | RealVideo20Decoder{ | |
2422d969 | 534 | info: NACodecInfoRef::default(), |
32007ad9 | 535 | dec: H263BaseDecoder::new_b_frames(false), |
e07387c7 | 536 | tables, |
be91b1c3 KS |
537 | w: 0, |
538 | h: 0, | |
539 | minor_ver: 0, | |
540 | rpr: RPRInfo { present: false, bits: 0, widths: [0; 8], heights: [0; 8] }, | |
5c75af61 | 541 | bdsp: Box::new(RV20BlockDSP::default()), |
5ce3689c KS |
542 | base_ts: 0, |
543 | last_ts: 0, | |
544 | next_ts: 0, | |
be91b1c3 KS |
545 | } |
546 | } | |
547 | } | |
548 | ||
549 | impl NADecoder for RealVideo20Decoder { | |
2a2aa421 | 550 | #[allow(unused_variables)] |
01613464 | 551 | fn init(&mut self, _supp: &mut NADecoderSupport, info: NACodecInfoRef) -> DecoderResult<()> { |
be91b1c3 KS |
552 | if let NACodecTypeInfo::Video(vinfo) = info.get_properties() { |
553 | let w = vinfo.get_width(); | |
554 | let h = vinfo.get_height(); | |
555 | let fmt = formats::YUV420_FORMAT; | |
556 | let myinfo = NACodecTypeInfo::Video(NAVideoInfo::new(w, h, false, fmt)); | |
2422d969 | 557 | self.info = NACodecInfo::new_ref(info.get_name(), myinfo, info.get_extradata()).into_ref(); |
be91b1c3 KS |
558 | self.w = w; |
559 | self.h = h; | |
560 | ||
561 | let edata = info.get_extradata().unwrap(); | |
562 | let src: &[u8] = &edata; | |
563 | let ver = ((src[4] as u32) << 12) | ((src[5] as u32) << 4) | ((src[6] as u32) >> 4); | |
564 | let maj_ver = ver >> 16; | |
565 | let min_ver = (ver >> 8) & 0xFF; | |
566 | let mic_ver = ver & 0xFF; | |
be91b1c3 KS |
567 | validate!(maj_ver == 2); |
568 | self.minor_ver = min_ver as u8; | |
569 | let rprb = src[1] & 7; | |
570 | if rprb == 0 { | |
571 | self.rpr.present = false; | |
572 | } else { | |
573 | self.rpr.present = true; | |
7c37f176 | 574 | self.rpr.bits = ((rprb >> 1) + 1) as u8; |
be91b1c3 KS |
575 | for i in 4..(src.len()/2) { |
576 | self.rpr.widths [i - 4] = (src[i * 2] as usize) * 4; | |
577 | self.rpr.heights[i - 4] = (src[i * 2 + 1] as usize) * 4; | |
578 | } | |
579 | } | |
580 | Ok(()) | |
581 | } else { | |
be91b1c3 KS |
582 | Err(DecoderError::InvalidData) |
583 | } | |
584 | } | |
01613464 | 585 | fn decode(&mut self, _supp: &mut NADecoderSupport, pkt: &NAPacket) -> DecoderResult<NAFrameRef> { |
be91b1c3 KS |
586 | let src = pkt.get_buffer(); |
587 | ||
be91b1c3 KS |
588 | let mut ibr = RealVideo20BR::new(&src, &self.tables, self.w, self.h, self.minor_ver, self.rpr); |
589 | ||
5c75af61 | 590 | let bufinfo = self.dec.parse_frame(&mut ibr, self.bdsp.as_ref())?; |
be91b1c3 KS |
591 | |
592 | let mut frm = NAFrame::new_from_pkt(pkt, self.info.clone(), bufinfo); | |
5ce3689c KS |
593 | let ftype = self.dec.get_frame_type(); |
594 | let pts = ibr.pts; | |
595 | if ftype != FrameType::B { | |
596 | self.last_ts = self.next_ts; | |
597 | self.next_ts = pts; | |
598 | if self.last_ts > self.next_ts { | |
599 | self.base_ts += 1 << 16; | |
600 | } | |
601 | } | |
602 | let ts_diff = self.next_ts.wrapping_sub(pts); | |
603 | let ts = self.base_ts + (self.next_ts as u64) - (ts_diff as u64); | |
be91b1c3 | 604 | frm.set_keyframe(self.dec.is_intra()); |
5ce3689c KS |
605 | frm.set_frame_type(ftype); |
606 | frm.set_pts(Some(ts >> 3)); | |
171860fc | 607 | Ok(frm.into_ref()) |
be91b1c3 | 608 | } |
f9be4e75 KS |
609 | fn flush(&mut self) { |
610 | self.dec.flush(); | |
611 | } | |
be91b1c3 KS |
612 | } |
613 | ||
614 | struct MBB { blocks: usize, bits: u8 } | |
615 | const H263_MBB: &[MBB; 7] = &[ | |
616 | MBB{ blocks: 47, bits: 6 }, | |
617 | MBB{ blocks: 98, bits: 7 }, | |
618 | MBB{ blocks: 395, bits: 9 }, | |
619 | MBB{ blocks: 1583, bits: 11 }, | |
620 | MBB{ blocks: 6335, bits: 13 }, | |
621 | MBB{ blocks: 9215, bits: 14 }, | |
622 | MBB{ blocks: 65536, bits: 14 }, | |
623 | ]; | |
624 | ||
08a1fab7 | 625 | pub fn get_decoder() -> Box<dyn NADecoder + Send> { |
be91b1c3 KS |
626 | Box::new(RealVideo20Decoder::new()) |
627 | } | |
628 | ||
629 | #[cfg(test)] | |
630 | mod test { | |
3167c45c KS |
631 | use nihav_core::codecs::RegisteredDecoders; |
632 | use nihav_core::demuxers::RegisteredDemuxers; | |
ce742854 | 633 | use nihav_codec_support::test::dec_video::*; |
e64739f8 KS |
634 | use crate::realmedia_register_all_codecs; |
635 | use crate::realmedia_register_all_demuxers; | |
be91b1c3 KS |
636 | #[test] |
637 | fn test_rv20() { | |
3167c45c KS |
638 | let mut dmx_reg = RegisteredDemuxers::new(); |
639 | realmedia_register_all_demuxers(&mut dmx_reg); | |
640 | let mut dec_reg = RegisteredDecoders::new(); | |
641 | realmedia_register_all_codecs(&mut dec_reg); | |
642 | ||
643 | test_file_decoding("realmedia", "assets/RV/rv20_svt_atrc_640x352_realproducer_plus_8.51.rm", /*None*/Some(3000), true, false, None/*Some("rv20")*/, &dmx_reg, &dec_reg); | |
7c37f176 | 644 | // test_file_decoding("realmedia", "assets/RV/rv20_cook_640x352_realproducer_plus_8.51.rm", /*None*/Some(1000), true, false, Some("rv20")); |
be91b1c3 KS |
645 | } |
646 | } |