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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 KS |
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::*; | |
5641dccf | 11 | |
be91b1c3 KS |
12 | |
13 | #[allow(dead_code)] | |
14 | struct Tables { | |
15 | intra_mcbpc_cb: Codebook<u8>, | |
16 | inter_mcbpc_cb: Codebook<u8>, | |
507f4b11 | 17 | mbtype_b_cb: Codebook<u8>, |
be91b1c3 | 18 | cbpy_cb: Codebook<u8>, |
507f4b11 | 19 | cbpc_b_cb: Codebook<u8>, |
be91b1c3 KS |
20 | rl_cb: Codebook<H263RLSym>, |
21 | aic_rl_cb: Codebook<H263RLSym>, | |
22 | mv_cb: Codebook<u8>, | |
23 | } | |
24 | ||
25 | #[derive(Clone,Copy)] | |
26 | struct RPRInfo { | |
27 | present: bool, | |
28 | bits: u8, | |
29 | widths: [usize; 8], | |
30 | heights: [usize; 8], | |
31 | } | |
32 | ||
33 | struct RealVideo20Decoder { | |
2422d969 | 34 | info: NACodecInfoRef, |
be91b1c3 KS |
35 | dec: H263BaseDecoder, |
36 | tables: Tables, | |
37 | w: usize, | |
38 | h: usize, | |
39 | minor_ver: u8, | |
40 | rpr: RPRInfo, | |
2a2aa421 | 41 | bdsp: H263BlockDSP, |
be91b1c3 KS |
42 | } |
43 | ||
44 | struct RealVideo20BR<'a> { | |
45 | br: BitReader<'a>, | |
46 | tables: &'a Tables, | |
47 | num_slices: usize, | |
48 | slice_no: usize, | |
49 | slice_off: Vec<u32>, | |
50 | w: usize, | |
51 | h: usize, | |
52 | mb_w: usize, | |
53 | mb_h: usize, | |
be91b1c3 | 54 | mb_pos_bits: u8, |
be91b1c3 KS |
55 | minor_ver: u8, |
56 | rpr: RPRInfo, | |
be91b1c3 KS |
57 | } |
58 | ||
59 | struct RV20SliceInfo { | |
60 | ftype: Type, | |
32007ad9 | 61 | seq: u32, |
be91b1c3 KS |
62 | qscale: u8, |
63 | mb_x: usize, | |
64 | mb_y: usize, | |
65 | mb_pos: usize, | |
66 | w: usize, | |
67 | h: usize, | |
68 | } | |
69 | ||
70 | impl RV20SliceInfo { | |
32007ad9 | 71 | fn new(ftype: Type, seq: u32, qscale: u8, mb_x: usize, mb_y: usize, mb_pos: usize, w: usize, h: usize) -> Self { |
e07387c7 | 72 | RV20SliceInfo { ftype, seq, qscale, mb_x, mb_y, mb_pos, w, h } |
be91b1c3 KS |
73 | } |
74 | } | |
75 | ||
76 | impl<'a> RealVideo20BR<'a> { | |
77 | fn new(src: &'a [u8], tables: &'a Tables, width: usize, height: usize, minor_ver: u8, rpr: RPRInfo) -> Self { | |
78 | let nslices = (src[0] as usize) + 1; | |
79 | let mut slice_offs = Vec::with_capacity(nslices); | |
80 | { | |
81 | let offs = &src[1..][..nslices * 8]; | |
fa90ccfb | 82 | let mut br = BitReader::new(offs, BitReaderMode::BE); |
be91b1c3 KS |
83 | for _ in 0..nslices { |
84 | br.skip(32).unwrap(); | |
85 | let off = br.read(32).unwrap(); | |
86 | slice_offs.push(off); | |
87 | } | |
88 | } | |
89 | let soff = nslices * 8 + 1; | |
90 | let mb_w = (width + 15) >> 4; | |
91 | let mb_h = (height + 15) >> 4; | |
92 | let max_pos = mb_w * mb_h - 1; | |
93 | let mut mbpb = 0; | |
94 | for i in 0..H263_MBB.len() { | |
95 | if max_pos <= H263_MBB[i].blocks { | |
96 | mbpb = H263_MBB[i].bits; | |
97 | break; | |
98 | } | |
99 | } | |
100 | RealVideo20BR { | |
fa90ccfb | 101 | br: BitReader::new(&src[soff..], BitReaderMode::BE), |
e07387c7 | 102 | tables, |
be91b1c3 KS |
103 | num_slices: nslices, |
104 | slice_no: 0, | |
105 | slice_off: slice_offs, | |
106 | w: width, | |
107 | h: height, | |
e07387c7 KS |
108 | mb_w, |
109 | mb_h, | |
be91b1c3 | 110 | mb_pos_bits: mbpb, |
e07387c7 KS |
111 | minor_ver, |
112 | rpr, | |
be91b1c3 KS |
113 | } |
114 | } | |
115 | ||
2a2aa421 | 116 | #[allow(unused_variables)] |
0c3b4923 | 117 | fn decode_block(&mut self, sstate: &SliceState, quant: u8, intra: bool, coded: bool, blk: &mut [i16; 64], plane_no: usize, acpred: ACPredMode) -> DecoderResult<()> { |
9037cf6b | 118 | let br = &mut self.br; |
be91b1c3 | 119 | let mut idx = 0; |
2a2aa421 | 120 | if !sstate.is_iframe && intra { |
fc26b944 | 121 | let mut dc = br.read(8)? as i16; |
be91b1c3 KS |
122 | if dc == 255 { dc = 128; } |
123 | blk[0] = dc << 3; | |
124 | idx = 1; | |
125 | } | |
126 | if !coded { return Ok(()); } | |
0c3b4923 KS |
127 | let scan = match acpred { |
128 | ACPredMode::Hor => H263_SCAN_V, | |
129 | ACPredMode::Ver => H263_SCAN_H, | |
64e8b971 | 130 | _ => &ZIGZAG, |
0c3b4923 | 131 | }; |
be91b1c3 | 132 | |
2a2aa421 | 133 | let rl_cb = if sstate.is_iframe { &self.tables.aic_rl_cb } else { &self.tables.rl_cb }; |
e3ace094 | 134 | let q_add = if quant == 0 || sstate.is_iframe { 0i16 } else { ((quant - 1) | 1) as i16 }; |
43c8b55e | 135 | let q = if plane_no == 0 { (quant * 2) as i16 } else { H263_CHROMA_QUANT[quant as usize] as i16 }; |
be91b1c3 | 136 | while idx < 64 { |
fc26b944 | 137 | let code = br.read_cb(rl_cb)?; |
be91b1c3 KS |
138 | let run; |
139 | let mut level; | |
140 | let last; | |
141 | if !code.is_escape() { | |
142 | run = code.get_run(); | |
143 | level = code.get_level(); | |
144 | last = code.is_last(); | |
fc26b944 | 145 | if br.read_bool()? { level = -level; } |
32007ad9 | 146 | level = (level * q) + q_add; |
be91b1c3 | 147 | } else { |
fc26b944 KS |
148 | last = br.read_bool()?; |
149 | run = br.read(6)? as u8; | |
150 | level = br.read_s(8)? as i16; | |
be91b1c3 | 151 | if level == -128 { |
fc26b944 KS |
152 | let low = br.read(5)? as i16; |
153 | let top = br.read_s(6)? as i16; | |
be91b1c3 KS |
154 | level = (top << 5) | low; |
155 | } | |
32007ad9 | 156 | level = (level * q) + q_add; |
be91b1c3 KS |
157 | if level < -2048 { level = -2048; } |
158 | if level > 2047 { level = 2047; } | |
159 | } | |
160 | idx += run; | |
161 | validate!(idx < 64); | |
0c3b4923 | 162 | let oidx = scan[idx as usize]; |
be91b1c3 KS |
163 | blk[oidx] = level; |
164 | idx += 1; | |
165 | if last { break; } | |
166 | } | |
167 | Ok(()) | |
168 | } | |
169 | } | |
170 | ||
171 | fn decode_mv_component(br: &mut BitReader, mv_cb: &Codebook<u8>) -> DecoderResult<i16> { | |
fc26b944 | 172 | let code = br.read_cb(mv_cb)? as i16; |
be91b1c3 | 173 | if code == 0 { return Ok(0) } |
fc26b944 | 174 | if !br.read_bool()? { |
be91b1c3 KS |
175 | Ok(code) |
176 | } else { | |
177 | Ok(-code) | |
178 | } | |
179 | } | |
180 | ||
181 | fn decode_mv(br: &mut BitReader, mv_cb: &Codebook<u8>) -> DecoderResult<MV> { | |
fc26b944 KS |
182 | let xval = decode_mv_component(br, mv_cb)?; |
183 | let yval = decode_mv_component(br, mv_cb)?; | |
be91b1c3 KS |
184 | Ok(MV::new(xval, yval)) |
185 | } | |
186 | ||
43c8b55e KS |
187 | fn read_dquant(br: &mut BitReader, q: u8) -> DecoderResult<u8> { |
188 | if br.read_bool()? { | |
189 | Ok(H263_MODIFIED_QUANT[br.read(1)? as usize][q as usize]) | |
190 | } else { | |
191 | Ok(br.read(5)? as u8) | |
192 | } | |
193 | } | |
194 | ||
be91b1c3 KS |
195 | impl<'a> BlockDecoder for RealVideo20BR<'a> { |
196 | ||
197 | #[allow(unused_variables)] | |
198 | fn decode_pichdr(&mut self) -> DecoderResult<PicInfo> { | |
199 | self.slice_no = 0; | |
fc26b944 | 200 | let shdr = self.read_slice_header()?; |
2a2aa421 | 201 | // self.slice_no += 1; |
be91b1c3 | 202 | validate!((shdr.mb_x == 0) && (shdr.mb_y == 0)); |
2a2aa421 | 203 | /* let mb_count; |
be91b1c3 KS |
204 | if self.slice_no < self.num_slices { |
205 | let pos = self.br.tell(); | |
fc26b944 | 206 | let shdr2 = self.read_slice_header()?; |
be91b1c3 KS |
207 | self.br.seek(pos as u32)?; |
208 | mb_count = shdr2.mb_pos - shdr.mb_pos; | |
209 | } else { | |
210 | mb_count = self.mb_w * self.mb_h; | |
2a2aa421 | 211 | }*/ |
be91b1c3 | 212 | |
0c3b4923 | 213 | let plusinfo = Some(PlusInfo::new(shdr.ftype == Type::I, false, false, false)); |
32007ad9 | 214 | let picinfo = PicInfo::new(shdr.w, shdr.h, shdr.ftype, MVMode::Long, false, false, shdr.qscale, shdr.seq as u16, None, plusinfo); |
be91b1c3 KS |
215 | Ok(picinfo) |
216 | } | |
217 | ||
218 | #[allow(unused_variables)] | |
2a2aa421 | 219 | fn decode_slice_header(&mut self, info: &PicInfo) -> DecoderResult<SliceInfo> { |
fc26b944 | 220 | let shdr = self.read_slice_header()?; |
be91b1c3 KS |
221 | self.slice_no += 1; |
222 | let mb_count; | |
223 | if self.slice_no < self.num_slices { | |
0c3b4923 | 224 | let pos = self.br.tell(); |
fc26b944 | 225 | let shdr2 = self.read_slice_header()?; |
be91b1c3 | 226 | mb_count = shdr2.mb_pos - shdr.mb_pos; |
0c3b4923 | 227 | self.br.seek(pos as u32)?; |
be91b1c3 KS |
228 | } else { |
229 | mb_count = self.mb_w * self.mb_h - shdr.mb_pos; | |
230 | } | |
2a2aa421 | 231 | let ret = SliceInfo::new(shdr.mb_x, shdr.mb_y, shdr.mb_pos + mb_count, shdr.qscale); |
be91b1c3 KS |
232 | |
233 | Ok(ret) | |
234 | } | |
235 | ||
43c8b55e | 236 | fn decode_block_header(&mut self, info: &PicInfo, _slice: &SliceInfo, sstate: &SliceState) -> DecoderResult<BlockInfo> { |
9037cf6b | 237 | let br = &mut self.br; |
43c8b55e | 238 | let mut q = sstate.quant; |
be91b1c3 KS |
239 | match info.get_mode() { |
240 | Type::I => { | |
fc26b944 KS |
241 | let mut cbpc = br.read_cb(&self.tables.intra_mcbpc_cb)?; |
242 | while cbpc == 8 { cbpc = br.read_cb(&self.tables.intra_mcbpc_cb)?; } | |
0c3b4923 KS |
243 | let mut acpred = ACPredMode::None; |
244 | if let Some(ref pi) = info.plusinfo { | |
245 | if pi.aic { | |
246 | let acpp = br.read_bool()?; | |
247 | acpred = ACPredMode::DC; | |
0c3b4923 KS |
248 | if acpp { |
249 | acpred = if br.read_bool()? { ACPredMode::Hor } else { ACPredMode::Ver }; | |
250 | } | |
251 | } | |
0c3b4923 | 252 | } |
fc26b944 | 253 | let cbpy = br.read_cb(&self.tables.cbpy_cb)?; |
be91b1c3 KS |
254 | let cbp = (cbpy << 2) | (cbpc & 3); |
255 | let dquant = (cbpc & 4) != 0; | |
256 | if dquant { | |
43c8b55e | 257 | q = read_dquant(br, q)?; |
be91b1c3 | 258 | } |
0c3b4923 KS |
259 | let mut binfo = BlockInfo::new(Type::I, cbp, q); |
260 | binfo.set_acpred(acpred); | |
261 | Ok(binfo) | |
be91b1c3 KS |
262 | }, |
263 | Type::P => { | |
fc26b944 | 264 | if br.read_bool()? { |
be91b1c3 KS |
265 | return Ok(BlockInfo::new(Type::Skip, 0, info.get_quant())); |
266 | } | |
fc26b944 KS |
267 | let mut cbpc = br.read_cb(&self.tables.inter_mcbpc_cb)?; |
268 | while cbpc == 20 { cbpc = br.read_cb(&self.tables.inter_mcbpc_cb)?; } | |
be91b1c3 KS |
269 | let is_intra = (cbpc & 0x04) != 0; |
270 | let dquant = (cbpc & 0x08) != 0; | |
271 | let is_4x4 = (cbpc & 0x10) != 0; | |
272 | if is_intra { | |
fc26b944 | 273 | let cbpy = br.read_cb(&self.tables.cbpy_cb)?; |
be91b1c3 KS |
274 | let cbp = (cbpy << 2) | (cbpc & 3); |
275 | if dquant { | |
43c8b55e | 276 | q = read_dquant(br, q)?; |
be91b1c3 KS |
277 | } |
278 | let binfo = BlockInfo::new(Type::I, cbp, q); | |
be91b1c3 KS |
279 | return Ok(binfo); |
280 | } | |
281 | ||
fc26b944 | 282 | let mut cbpy = br.read_cb(&self.tables.cbpy_cb)?; |
be91b1c3 KS |
283 | // if /* !aiv && */(cbpc & 3) != 3 { |
284 | cbpy ^= 0xF; | |
285 | // } | |
286 | let cbp = (cbpy << 2) | (cbpc & 3); | |
287 | if dquant { | |
43c8b55e | 288 | q = read_dquant(br, q)?; |
be91b1c3 | 289 | } |
be91b1c3 KS |
290 | let mut binfo = BlockInfo::new(Type::P, cbp, q); |
291 | if !is_4x4 { | |
fc26b944 | 292 | let mvec: [MV; 1] = [decode_mv(br, &self.tables.mv_cb)?]; |
be91b1c3 KS |
293 | binfo.set_mv(&mvec); |
294 | } else { | |
295 | let mvec: [MV; 4] = [ | |
fc26b944 KS |
296 | decode_mv(br, &self.tables.mv_cb)?, |
297 | decode_mv(br, &self.tables.mv_cb)?, | |
298 | decode_mv(br, &self.tables.mv_cb)?, | |
299 | decode_mv(br, &self.tables.mv_cb)? | |
be91b1c3 KS |
300 | ]; |
301 | binfo.set_mv(&mvec); | |
302 | } | |
be91b1c3 KS |
303 | Ok(binfo) |
304 | }, | |
32007ad9 | 305 | Type::B => { // B |
507f4b11 KS |
306 | let mut mbtype = br.read_cb(&self.tables.mbtype_b_cb)? as usize; |
307 | while mbtype == 14 { mbtype = br.read_cb(&self.tables.mbtype_b_cb)? as usize; } | |
308 | ||
309 | let is_coded = (H263_MBTYPE_B_CAPS[mbtype] & H263_MBB_CAP_CODED) != 0; | |
310 | let is_intra = (H263_MBTYPE_B_CAPS[mbtype] & H263_MBB_CAP_INTRA) != 0; | |
311 | let dquant = (H263_MBTYPE_B_CAPS[mbtype] & H263_MBB_CAP_DQUANT) != 0; | |
312 | let is_fwd = (H263_MBTYPE_B_CAPS[mbtype] & H263_MBB_CAP_FORWARD) != 0; | |
313 | let is_bwd = (H263_MBTYPE_B_CAPS[mbtype] & H263_MBB_CAP_BACKWARD) != 0; | |
314 | ||
315 | let cbp = if is_coded { | |
316 | let cbpc = br.read_cb(&self.tables.cbpc_b_cb)?; | |
317 | let mut cbpy = br.read_cb(&self.tables.cbpy_cb)?; | |
318 | if !is_intra { cbpy ^= 0xF; } | |
319 | (cbpy << 2) | (cbpc & 3) | |
320 | } else { 0 }; | |
1a151e53 | 321 | |
507f4b11 | 322 | if dquant { |
43c8b55e | 323 | q = read_dquant(br, q)?; |
507f4b11 | 324 | } |
507f4b11 KS |
325 | |
326 | if is_intra { | |
327 | let binfo = BlockInfo::new(Type::I, cbp, q); | |
328 | return Ok(binfo); | |
329 | } | |
330 | ||
331 | let mut binfo = BlockInfo::new(Type::B, cbp, q); | |
332 | if is_fwd { | |
333 | let mvec: [MV; 1] = [decode_mv(br, &self.tables.mv_cb)?]; | |
334 | binfo.set_mv(&mvec); | |
335 | } | |
336 | if is_bwd { | |
337 | let mvec: [MV; 1] = [decode_mv(br, &self.tables.mv_cb)?]; | |
338 | binfo.set_b_mv(&mvec); | |
339 | } | |
340 | Ok(binfo) | |
341 | }, | |
32007ad9 | 342 | _ => { unreachable!(); }, |
be91b1c3 KS |
343 | } |
344 | } | |
345 | ||
2a2aa421 | 346 | fn decode_block_intra(&mut self, info: &BlockInfo, sstate: &SliceState, quant: u8, no: usize, coded: bool, blk: &mut [i16; 64]) -> DecoderResult<()> { |
0c3b4923 | 347 | self.decode_block(sstate, quant, true, coded, blk, if no < 4 { 0 } else { no - 3 }, info.get_acpred()) |
be91b1c3 KS |
348 | } |
349 | ||
350 | #[allow(unused_variables)] | |
2a2aa421 | 351 | fn decode_block_inter(&mut self, info: &BlockInfo, sstate: &SliceState, quant: u8, no: usize, coded: bool, blk: &mut [i16; 64]) -> DecoderResult<()> { |
0c3b4923 | 352 | self.decode_block(sstate, quant, false, coded, blk, if no < 4 { 0 } else { no - 3 }, ACPredMode::None) |
be91b1c3 KS |
353 | } |
354 | ||
2a2aa421 | 355 | fn is_slice_end(&mut self) -> bool { false } |
be91b1c3 KS |
356 | } |
357 | ||
358 | impl<'a> RealVideo20BR<'a> { | |
2a2aa421 | 359 | #[allow(unused_variables)] |
be91b1c3 KS |
360 | fn read_slice_header(&mut self) -> DecoderResult<RV20SliceInfo> { |
361 | validate!(self.slice_no < self.num_slices); | |
362 | ||
9037cf6b | 363 | let br = &mut self.br; |
fc26b944 | 364 | br.seek(self.slice_off[self.slice_no] * 8)?; |
be91b1c3 | 365 | |
fc26b944 | 366 | let frm_type = br.read(2)?; |
be91b1c3 KS |
367 | let ftype = match frm_type { |
368 | 0 | 1 => { Type::I }, | |
369 | 2 => { Type::P }, | |
507f4b11 | 370 | _ => { Type::B }, |
be91b1c3 KS |
371 | }; |
372 | ||
fc26b944 | 373 | let marker = br.read(1)?; |
be91b1c3 | 374 | validate!(marker == 0); |
fc26b944 | 375 | let qscale = br.read(5)? as u8; |
be91b1c3 KS |
376 | validate!(qscale > 0); |
377 | if self.minor_ver >= 2 { | |
fc26b944 | 378 | br.skip(1)?; // loop filter |
be91b1c3 KS |
379 | } |
380 | let seq = if self.minor_ver <= 1 { | |
32007ad9 | 381 | br.read(8)? << 8 |
be91b1c3 | 382 | } else { |
32007ad9 | 383 | br.read(13)? << 3 |
be91b1c3 KS |
384 | }; |
385 | let w; | |
386 | let h; | |
387 | if self.rpr.present { | |
fc26b944 | 388 | let rpr = br.read(self.rpr.bits)? as usize; |
be91b1c3 KS |
389 | if rpr == 0 { |
390 | w = self.w; | |
391 | h = self.h; | |
392 | } else { | |
7c37f176 KS |
393 | w = self.rpr.widths[rpr - 1]; |
394 | h = self.rpr.heights[rpr - 1]; | |
be91b1c3 KS |
395 | validate!((w != 0) && (h != 0)); |
396 | } | |
397 | } else { | |
398 | w = self.w; | |
399 | h = self.h; | |
400 | } | |
401 | ||
fc26b944 | 402 | let mb_pos = br.read(self.mb_pos_bits)? as usize; |
be91b1c3 KS |
403 | let mb_x = mb_pos % self.mb_w; |
404 | let mb_y = mb_pos / self.mb_w; | |
405 | ||
fc26b944 | 406 | br.skip(1)?; // no rounding |
be91b1c3 KS |
407 | |
408 | if (self.minor_ver <= 1) && (frm_type == 3) { | |
fc26b944 | 409 | br.skip(5)?; |
be91b1c3 | 410 | } |
be91b1c3 | 411 | |
32007ad9 | 412 | Ok(RV20SliceInfo::new(ftype, seq, qscale, mb_x, mb_y, mb_pos, w, h)) |
be91b1c3 KS |
413 | } |
414 | } | |
415 | ||
be91b1c3 KS |
416 | impl RealVideo20Decoder { |
417 | fn new() -> Self { | |
418 | let mut coderead = H263ShortCodeReader::new(H263_INTRA_MCBPC); | |
419 | let intra_mcbpc_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); | |
420 | let mut coderead = H263ShortCodeReader::new(H263_INTER_MCBPC); | |
421 | let inter_mcbpc_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); | |
507f4b11 KS |
422 | let mut coderead = H263ShortCodeReader::new(H263_MBTYPE_B); |
423 | let mbtype_b_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); | |
be91b1c3 KS |
424 | let mut coderead = H263ShortCodeReader::new(H263_CBPY); |
425 | let cbpy_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); | |
507f4b11 KS |
426 | let mut coderead = H263ShortCodeReader::new(H263_CBPC_B); |
427 | let cbpc_b_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); | |
be91b1c3 KS |
428 | let mut coderead = H263RLCodeReader::new(H263_RL_CODES); |
429 | let rl_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); | |
430 | let mut coderead = H263RLCodeReader::new(H263_RL_CODES_AIC); | |
431 | let aic_rl_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); | |
432 | let mut coderead = H263ShortCodeReader::new(H263_MV); | |
433 | let mv_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); | |
1a151e53 | 434 | |
be91b1c3 | 435 | let tables = Tables { |
e07387c7 KS |
436 | intra_mcbpc_cb, |
437 | inter_mcbpc_cb, | |
438 | mbtype_b_cb, | |
439 | cbpy_cb, | |
440 | cbpc_b_cb, | |
441 | rl_cb, | |
442 | aic_rl_cb, | |
443 | mv_cb, | |
be91b1c3 KS |
444 | }; |
445 | ||
446 | RealVideo20Decoder{ | |
2422d969 | 447 | info: NACodecInfoRef::default(), |
32007ad9 | 448 | dec: H263BaseDecoder::new_b_frames(false), |
e07387c7 | 449 | tables, |
be91b1c3 KS |
450 | w: 0, |
451 | h: 0, | |
452 | minor_ver: 0, | |
453 | rpr: RPRInfo { present: false, bits: 0, widths: [0; 8], heights: [0; 8] }, | |
2a2aa421 | 454 | bdsp: H263BlockDSP::new(), |
be91b1c3 KS |
455 | } |
456 | } | |
457 | } | |
458 | ||
459 | impl NADecoder for RealVideo20Decoder { | |
2a2aa421 | 460 | #[allow(unused_variables)] |
01613464 | 461 | fn init(&mut self, _supp: &mut NADecoderSupport, info: NACodecInfoRef) -> DecoderResult<()> { |
be91b1c3 KS |
462 | if let NACodecTypeInfo::Video(vinfo) = info.get_properties() { |
463 | let w = vinfo.get_width(); | |
464 | let h = vinfo.get_height(); | |
465 | let fmt = formats::YUV420_FORMAT; | |
466 | let myinfo = NACodecTypeInfo::Video(NAVideoInfo::new(w, h, false, fmt)); | |
2422d969 | 467 | self.info = NACodecInfo::new_ref(info.get_name(), myinfo, info.get_extradata()).into_ref(); |
be91b1c3 KS |
468 | self.w = w; |
469 | self.h = h; | |
470 | ||
471 | let edata = info.get_extradata().unwrap(); | |
472 | let src: &[u8] = &edata; | |
473 | let ver = ((src[4] as u32) << 12) | ((src[5] as u32) << 4) | ((src[6] as u32) >> 4); | |
474 | let maj_ver = ver >> 16; | |
475 | let min_ver = (ver >> 8) & 0xFF; | |
476 | let mic_ver = ver & 0xFF; | |
be91b1c3 KS |
477 | validate!(maj_ver == 2); |
478 | self.minor_ver = min_ver as u8; | |
479 | let rprb = src[1] & 7; | |
480 | if rprb == 0 { | |
481 | self.rpr.present = false; | |
482 | } else { | |
483 | self.rpr.present = true; | |
7c37f176 | 484 | self.rpr.bits = ((rprb >> 1) + 1) as u8; |
be91b1c3 KS |
485 | for i in 4..(src.len()/2) { |
486 | self.rpr.widths [i - 4] = (src[i * 2] as usize) * 4; | |
487 | self.rpr.heights[i - 4] = (src[i * 2 + 1] as usize) * 4; | |
488 | } | |
489 | } | |
490 | Ok(()) | |
491 | } else { | |
be91b1c3 KS |
492 | Err(DecoderError::InvalidData) |
493 | } | |
494 | } | |
01613464 | 495 | fn decode(&mut self, _supp: &mut NADecoderSupport, pkt: &NAPacket) -> DecoderResult<NAFrameRef> { |
be91b1c3 KS |
496 | let src = pkt.get_buffer(); |
497 | ||
be91b1c3 KS |
498 | let mut ibr = RealVideo20BR::new(&src, &self.tables, self.w, self.h, self.minor_ver, self.rpr); |
499 | ||
fc26b944 | 500 | let bufinfo = self.dec.parse_frame(&mut ibr, &self.bdsp)?; |
be91b1c3 KS |
501 | |
502 | let mut frm = NAFrame::new_from_pkt(pkt, self.info.clone(), bufinfo); | |
503 | frm.set_keyframe(self.dec.is_intra()); | |
507f4b11 | 504 | frm.set_frame_type(self.dec.get_frame_type()); |
171860fc | 505 | Ok(frm.into_ref()) |
be91b1c3 | 506 | } |
f9be4e75 KS |
507 | fn flush(&mut self) { |
508 | self.dec.flush(); | |
509 | } | |
be91b1c3 KS |
510 | } |
511 | ||
512 | struct MBB { blocks: usize, bits: u8 } | |
513 | const H263_MBB: &[MBB; 7] = &[ | |
514 | MBB{ blocks: 47, bits: 6 }, | |
515 | MBB{ blocks: 98, bits: 7 }, | |
516 | MBB{ blocks: 395, bits: 9 }, | |
517 | MBB{ blocks: 1583, bits: 11 }, | |
518 | MBB{ blocks: 6335, bits: 13 }, | |
519 | MBB{ blocks: 9215, bits: 14 }, | |
520 | MBB{ blocks: 65536, bits: 14 }, | |
521 | ]; | |
522 | ||
08a1fab7 | 523 | pub fn get_decoder() -> Box<dyn NADecoder + Send> { |
be91b1c3 KS |
524 | Box::new(RealVideo20Decoder::new()) |
525 | } | |
526 | ||
527 | #[cfg(test)] | |
528 | mod test { | |
3167c45c KS |
529 | use nihav_core::codecs::RegisteredDecoders; |
530 | use nihav_core::demuxers::RegisteredDemuxers; | |
ce742854 | 531 | use nihav_codec_support::test::dec_video::*; |
e64739f8 KS |
532 | use crate::realmedia_register_all_codecs; |
533 | use crate::realmedia_register_all_demuxers; | |
be91b1c3 KS |
534 | #[test] |
535 | fn test_rv20() { | |
3167c45c KS |
536 | let mut dmx_reg = RegisteredDemuxers::new(); |
537 | realmedia_register_all_demuxers(&mut dmx_reg); | |
538 | let mut dec_reg = RegisteredDecoders::new(); | |
539 | realmedia_register_all_codecs(&mut dec_reg); | |
540 | ||
541 | 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 | 542 | // test_file_decoding("realmedia", "assets/RV/rv20_cook_640x352_realproducer_plus_8.51.rm", /*None*/Some(1000), true, false, Some("rv20")); |
be91b1c3 KS |
543 | } |
544 | } |