]>
Commit | Line | Data |
---|---|---|
cf64af13 KS |
1 | use io::bitreader::*; |
2 | use io::codebook::*; | |
3 | use formats; | |
88c58b1b | 4 | use super::super::*; |
cf64af13 | 5 | use super::*; |
88c58b1b KS |
6 | use super::decoder::*; |
7 | use super::data::*; | |
cf64af13 KS |
8 | |
9 | #[allow(dead_code)] | |
10 | struct Tables { | |
11 | intra_mcbpc_cb: Codebook<u8>, | |
12 | inter_mcbpc_cb: Codebook<u8>, | |
13 | cbpy_cb: Codebook<u8>, | |
14 | rl_cb: Codebook<H263RLSym>, | |
15 | aic_rl_cb: Codebook<H263RLSym>, | |
16 | mv_cb: Codebook<u8>, | |
17 | } | |
18 | ||
19 | struct Intel263Decoder { | |
20 | info: Rc<NACodecInfo>, | |
88c58b1b | 21 | dec: H263BaseDecoder, |
cf64af13 KS |
22 | tables: Tables, |
23 | } | |
24 | ||
25 | struct Intel263BR<'a> { | |
26 | br: BitReader<'a>, | |
27 | tables: &'a Tables, | |
28 | gob_no: usize, | |
29 | mb_w: usize, | |
30 | is_pb: bool, | |
31 | } | |
32 | ||
33 | fn check_marker<'a>(br: &mut BitReader<'a>) -> DecoderResult<()> { | |
34 | let mark = br.read(1)?; | |
35 | validate!(mark == 1); | |
36 | Ok(()) | |
37 | } | |
38 | ||
39 | impl<'a> Intel263BR<'a> { | |
40 | fn new(src: &'a [u8], tables: &'a Tables) -> Self { | |
41 | Intel263BR { | |
42 | br: BitReader::new(src, src.len(), BitReaderMode::BE), | |
43 | tables: tables, | |
44 | gob_no: 0, | |
45 | mb_w: 0, | |
46 | is_pb: false, | |
47 | } | |
48 | } | |
49 | ||
50 | fn decode_block(&mut self, quant: u8, intra: bool, coded: bool, blk: &mut [i16; 64]) -> DecoderResult<()> { | |
51 | let mut br = &mut self.br; | |
52 | let mut idx = 0; | |
53 | if intra { | |
54 | let mut dc = br.read(8)?; | |
55 | if dc == 255 { dc = 128; } | |
56 | blk[0] = (dc as i16) << 3; | |
57 | idx = 1; | |
58 | } | |
59 | if !coded { return Ok(()); } | |
60 | ||
61 | let rl_cb = &self.tables.rl_cb; // could be aic too | |
62 | let q_add = if quant == 0 { 0i16 } else { ((quant - 1) | 1) as i16 }; | |
63 | let q = (quant * 2) as i16; | |
64 | while idx < 64 { | |
65 | let code = br.read_cb(rl_cb)?; | |
66 | let run; | |
67 | let mut level; | |
68 | let last; | |
69 | if !code.is_escape() { | |
70 | run = code.get_run(); | |
71 | level = code.get_level(); | |
72 | last = code.is_last(); | |
73 | if br.read_bool()? { level = -level; } | |
74 | level = (level * q) + q_add; | |
75 | } else { | |
76 | last = br.read_bool()?; | |
77 | run = br.read(6)? as u8; | |
78 | level = br.read_s(8)? as i16; | |
79 | if level == -128 { | |
80 | let low = br.read(5)? as i16; | |
81 | let top = br.read_s(6)? as i16; | |
82 | level = (top << 5) | low; | |
83 | } | |
84 | level = (level * q) + q_add; | |
85 | if level < -2048 { level = -2048; } | |
86 | if level > 2047 { level = 2047; } | |
87 | } | |
88 | idx += run; | |
89 | validate!(idx < 64); | |
90 | let oidx = H263_ZIGZAG[idx as usize]; | |
91 | blk[oidx] = level; | |
92 | idx += 1; | |
93 | if last { break; } | |
94 | } | |
95 | Ok(()) | |
96 | } | |
97 | } | |
98 | ||
99 | fn decode_mv_component(br: &mut BitReader, mv_cb: &Codebook<u8>) -> DecoderResult<i16> { | |
100 | let code = br.read_cb(mv_cb)? as i16; | |
101 | if code == 0 { return Ok(0) } | |
102 | if !br.read_bool()? { | |
103 | Ok(code) | |
104 | } else { | |
105 | Ok(-code) | |
106 | } | |
107 | } | |
108 | ||
109 | fn decode_mv(br: &mut BitReader, mv_cb: &Codebook<u8>) -> DecoderResult<MV> { | |
110 | let xval = decode_mv_component(br, mv_cb)?; | |
111 | let yval = decode_mv_component(br, mv_cb)?; | |
112 | Ok(MV::new(xval, yval)) | |
113 | } | |
114 | ||
21c16d5f KS |
115 | fn decode_b_info(br: &mut BitReader, is_pb: bool, is_intra: bool) -> DecoderResult<BBlockInfo> { |
116 | if is_pb { // as improved pb | |
117 | let pb_mv_add = if is_intra { 1 } else { 0 }; | |
118 | if br.read_bool()?{ | |
119 | if br.read_bool()? { | |
120 | let pb_mv_count = 1 - (br.read(1)? as usize); | |
121 | let cbpb = br.read(6)? as u8; | |
122 | Ok(BBlockInfo::new(true, cbpb, pb_mv_count + pb_mv_add, pb_mv_count == 1)) | |
123 | } else { | |
124 | Ok(BBlockInfo::new(true, 0, 1 + pb_mv_add, true)) | |
125 | } | |
126 | } else { | |
127 | Ok(BBlockInfo::new(true, 0, pb_mv_add, false)) | |
128 | } | |
129 | } else { | |
130 | Ok(BBlockInfo::new(false, 0, 0, false)) | |
131 | } | |
132 | } | |
133 | ||
cf64af13 KS |
134 | impl<'a> BlockDecoder for Intel263BR<'a> { |
135 | ||
136 | #[allow(unused_variables)] | |
137 | fn decode_pichdr(&mut self) -> DecoderResult<PicInfo> { | |
138 | let mut br = &mut self.br; | |
139 | let syncw = br.read(22)?; | |
140 | validate!(syncw == 0x000020); | |
141 | let tr = br.read(8)? as u8; | |
142 | check_marker(br)?; | |
143 | let id = br.read(1)?; | |
144 | validate!(id == 0); | |
145 | br.read(1)?; // split screen indicator | |
146 | br.read(1)?; // document camera indicator | |
147 | br.read(1)?; // freeze picture release | |
148 | let mut sfmt = br.read(3)?; | |
149 | validate!((sfmt != 0b000) && (sfmt != 0b110)); | |
150 | let is_intra = !br.read_bool()?; | |
151 | let umv = br.read_bool()?; | |
152 | br.read(1)?; // syntax arithmetic coding | |
153 | let apm = br.read_bool()?; | |
154 | self.is_pb = br.read_bool()?; | |
f2f1afb2 | 155 | let deblock; |
cf64af13 KS |
156 | if sfmt == 0b111 { |
157 | sfmt = br.read(3)?; | |
158 | validate!((sfmt != 0b000) && (sfmt != 0b111)); | |
159 | br.read(2)?; // unknown flags | |
f2f1afb2 | 160 | deblock = br.read_bool()?; |
cf64af13 KS |
161 | br.read(1)?; // unknown flag |
162 | let pbplus = br.read_bool()?; | |
163 | br.read(5)?; // unknown flags | |
164 | let marker = br.read(5)?; | |
165 | validate!(marker == 1); | |
f2f1afb2 KS |
166 | } else { |
167 | deblock = false; | |
cf64af13 KS |
168 | } |
169 | let w; let h; | |
170 | if sfmt == 0b110 { | |
171 | let par = br.read(4)?; | |
172 | w = ((br.read(9)? + 1) * 4) as usize; | |
173 | check_marker(br)?; | |
174 | h = ((br.read(9)? + 1) * 4) as usize; | |
175 | if par == 0b1111 { | |
176 | let pixw = br.read(8)?; | |
177 | let pixh = br.read(8)?; | |
178 | validate!((pixw != 0) && (pixh != 0)); | |
179 | } | |
180 | } else { | |
181 | let (w_, h_) = H263_SIZES[sfmt as usize]; | |
182 | w = w_; | |
183 | h = h_; | |
184 | } | |
185 | let quant = br.read(5)?; | |
186 | let cpm = br.read_bool()?; | |
187 | validate!(!cpm); | |
21c16d5f KS |
188 | |
189 | let pbinfo; | |
cf64af13 KS |
190 | if self.is_pb { |
191 | let trb = br.read(3)?; | |
192 | let dbquant = br.read(2)?; | |
21c16d5f KS |
193 | pbinfo = Some(PBInfo::new(trb as u8, dbquant as u8)); |
194 | } else { | |
195 | pbinfo = None; | |
cf64af13 KS |
196 | } |
197 | while br.read_bool()? { // skip PEI | |
198 | br.read(8)?; | |
199 | } | |
21c16d5f | 200 | //println!("frame {}x{} intra: {} q {} pb {} apm {} umv {} @{}", w, h, is_intra, quant, self.is_pb, apm, umv, br.tell()); |
cf64af13 KS |
201 | self.gob_no = 0; |
202 | self.mb_w = (w + 15) >> 4; | |
203 | ||
204 | let ftype = if is_intra { Type::I } else { Type::P }; | |
f2f1afb2 | 205 | let picinfo = PicInfo::new(w, h, ftype, quant as u8, apm, umv, tr, pbinfo, deblock); |
cf64af13 KS |
206 | Ok(picinfo) |
207 | } | |
208 | ||
209 | #[allow(unused_variables)] | |
210 | fn decode_slice_header(&mut self, info: &PicInfo) -> DecoderResult<Slice> { | |
211 | let mut br = &mut self.br; | |
212 | let gbsc = br.read(17)?; | |
cf64af13 KS |
213 | validate!(gbsc == 1); |
214 | let gn = br.read(5)?; | |
215 | let gfid = br.read(2)?; | |
216 | let gquant = br.read(5)?; | |
21c16d5f | 217 | //println!("GOB gn {:X} id {} q {}", gn, gfid, gquant); |
cf64af13 KS |
218 | let ret = Slice::new(0, self.gob_no, gquant as u8); |
219 | self.gob_no += 1; | |
220 | Ok(ret) | |
221 | } | |
222 | ||
223 | fn decode_block_header(&mut self, info: &PicInfo, slice: &Slice) -> DecoderResult<BlockInfo> { | |
224 | let mut br = &mut self.br; | |
225 | let mut q = slice.get_quant(); | |
226 | match info.get_mode() { | |
227 | Type::I => { | |
228 | let mut cbpc = br.read_cb(&self.tables.intra_mcbpc_cb)?; | |
229 | while cbpc == 8 { cbpc = br.read_cb(&self.tables.intra_mcbpc_cb)?; } | |
230 | let cbpy = br.read_cb(&self.tables.cbpy_cb)?; | |
231 | let cbp = (cbpy << 2) | (cbpc & 3); | |
232 | let dquant = (cbpc & 4) != 0; | |
233 | if dquant { | |
234 | let idx = br.read(2)? as usize; | |
235 | q = ((q as i16) + (H263_DQUANT_TAB[idx] as i16)) as u8; | |
236 | } | |
cf64af13 KS |
237 | Ok(BlockInfo::new(Type::I, cbp, q)) |
238 | }, | |
239 | Type::P => { | |
cf64af13 KS |
240 | if br.read_bool()? { return Ok(BlockInfo::new(Type::Skip, 0, info.get_quant())); } |
241 | let mut cbpc = br.read_cb(&self.tables.inter_mcbpc_cb)?; | |
242 | while cbpc == 20 { cbpc = br.read_cb(&self.tables.inter_mcbpc_cb)?; } | |
243 | let is_intra = (cbpc & 0x04) != 0; | |
244 | let dquant = (cbpc & 0x08) != 0; | |
245 | let is_4x4 = (cbpc & 0x10) != 0; | |
246 | if is_intra { | |
247 | let mut mvec: Vec<MV> = Vec::new(); | |
21c16d5f | 248 | let bbinfo = decode_b_info(br, self.is_pb, true)?; |
cf64af13 KS |
249 | let cbpy = br.read_cb(&self.tables.cbpy_cb)?; |
250 | let cbp = (cbpy << 2) | (cbpc & 3); | |
251 | if dquant { | |
252 | let idx = br.read(2)? as usize; | |
253 | q = ((q as i16) + (H263_DQUANT_TAB[idx] as i16)) as u8; | |
254 | } | |
255 | let mut binfo = BlockInfo::new(Type::I, cbp, q); | |
21c16d5f | 256 | binfo.set_bpart(bbinfo); |
cf64af13 | 257 | if self.is_pb { |
21c16d5f | 258 | for _ in 0..bbinfo.get_num_mv() { |
cf64af13 KS |
259 | mvec.push(decode_mv(br, &self.tables.mv_cb)?); |
260 | } | |
21c16d5f | 261 | binfo.set_b_mv(mvec.as_slice()); |
cf64af13 | 262 | } |
cf64af13 KS |
263 | return Ok(binfo); |
264 | } | |
265 | ||
21c16d5f | 266 | let bbinfo = decode_b_info(br, self.is_pb, false)?; |
cf64af13 KS |
267 | let mut cbpy = br.read_cb(&self.tables.cbpy_cb)?; |
268 | // if /* !aiv && */(cbpc & 3) != 3 { | |
269 | cbpy ^= 0xF; | |
270 | // } | |
271 | let cbp = (cbpy << 2) | (cbpc & 3); | |
272 | if dquant { | |
273 | let idx = br.read(2)? as usize; | |
274 | q = ((q as i16) + (H263_DQUANT_TAB[idx] as i16)) as u8; | |
275 | } | |
276 | let mut binfo = BlockInfo::new(Type::P, cbp, q); | |
21c16d5f | 277 | binfo.set_bpart(bbinfo); |
cf64af13 KS |
278 | if !is_4x4 { |
279 | let mvec: [MV; 1] = [decode_mv(br, &self.tables.mv_cb)?]; | |
cf64af13 KS |
280 | binfo.set_mv(&mvec); |
281 | } else { | |
282 | let mvec: [MV; 4] = [ | |
283 | decode_mv(br, &self.tables.mv_cb)?, | |
284 | decode_mv(br, &self.tables.mv_cb)?, | |
285 | decode_mv(br, &self.tables.mv_cb)?, | |
286 | decode_mv(br, &self.tables.mv_cb)? | |
287 | ]; | |
288 | binfo.set_mv(&mvec); | |
289 | } | |
290 | if self.is_pb { | |
21c16d5f KS |
291 | let mut mvec: Vec<MV> = Vec::with_capacity(bbinfo.get_num_mv()); |
292 | for _ in 0..bbinfo.get_num_mv() { | |
cf64af13 KS |
293 | let mv = decode_mv(br, &self.tables.mv_cb)?; |
294 | mvec.push(mv); | |
295 | } | |
21c16d5f | 296 | binfo.set_b_mv(mvec.as_slice()); |
cf64af13 | 297 | } |
cf64af13 KS |
298 | Ok(binfo) |
299 | }, | |
300 | _ => { Err(DecoderError::InvalidData) }, | |
301 | } | |
302 | } | |
303 | ||
304 | #[allow(unused_variables)] | |
21c16d5f KS |
305 | fn decode_block_intra(&mut self, info: &BlockInfo, quant: u8, no: usize, coded: bool, blk: &mut [i16; 64]) -> DecoderResult<()> { |
306 | self.decode_block(quant, true, coded, blk) | |
cf64af13 KS |
307 | } |
308 | ||
309 | #[allow(unused_variables)] | |
21c16d5f KS |
310 | fn decode_block_inter(&mut self, info: &BlockInfo, quant: u8, no: usize, coded: bool, blk: &mut [i16; 64]) -> DecoderResult<()> { |
311 | self.decode_block(quant, false, coded, blk) | |
cf64af13 KS |
312 | } |
313 | ||
cf64af13 | 314 | fn is_slice_end(&mut self) -> bool { self.br.peek(16) == 0 } |
f2f1afb2 KS |
315 | |
316 | fn filter_row(&mut self, buf: &mut NAVideoBuffer<u8>, mb_y: usize, mb_w: usize, cbpi: &CBPInfo) { | |
317 | let stride = buf.get_stride(0); | |
318 | let mut off = buf.get_offset(0) + mb_y * 16 * stride; | |
319 | for mb_x in 0..mb_w { | |
320 | let coff = off; | |
321 | let coded0 = cbpi.is_coded(mb_x, 0); | |
322 | let coded1 = cbpi.is_coded(mb_x, 1); | |
323 | let q = cbpi.get_q(mb_w + mb_x); | |
324 | if mb_y != 0 { | |
325 | if coded0 && cbpi.is_coded_top(mb_x, 0) { deblock_hor(buf, 0, q, coff); } | |
326 | if coded1 && cbpi.is_coded_top(mb_x, 1) { deblock_hor(buf, 0, q, coff + 8); } | |
327 | } | |
328 | let coff = off + 8 * stride; | |
329 | if cbpi.is_coded(mb_x, 2) && coded0 { deblock_hor(buf, 0, q, coff); } | |
330 | if cbpi.is_coded(mb_x, 3) && coded1 { deblock_hor(buf, 0, q, coff + 8); } | |
331 | off += 16; | |
332 | } | |
333 | let mut leftt = false; | |
334 | let mut leftc = false; | |
335 | let mut off = buf.get_offset(0) + mb_y * 16 * stride; | |
336 | for mb_x in 0..mb_w { | |
337 | let ctop0 = cbpi.is_coded_top(mb_x, 0); | |
338 | let ctop1 = cbpi.is_coded_top(mb_x, 0); | |
339 | let ccur0 = cbpi.is_coded(mb_x, 0); | |
340 | let ccur1 = cbpi.is_coded(mb_x, 1); | |
341 | let q = cbpi.get_q(mb_w + mb_x); | |
342 | if mb_y != 0 { | |
343 | let coff = off - 8 * stride; | |
344 | let qtop = cbpi.get_q(mb_x); | |
345 | if leftt && ctop0 { deblock_ver(buf, 0, qtop, coff); } | |
346 | if ctop0 && ctop1 { deblock_ver(buf, 0, qtop, coff + 8); } | |
347 | } | |
348 | if leftc && ccur0 { deblock_ver(buf, 0, q, off); } | |
349 | if ccur0 && ccur1 { deblock_ver(buf, 0, q, off + 8); } | |
350 | leftt = ctop1; | |
351 | leftc = ccur1; | |
352 | off += 16; | |
353 | } | |
354 | let strideu = buf.get_stride(1); | |
355 | let stridev = buf.get_stride(2); | |
356 | let offu = buf.get_offset(1) + mb_y * 8 * strideu; | |
357 | let offv = buf.get_offset(2) + mb_y * 8 * stridev; | |
358 | if mb_y != 0 { | |
359 | for mb_x in 0..mb_w { | |
360 | let ctu = cbpi.is_coded_top(mb_x, 4); | |
361 | let ccu = cbpi.is_coded(mb_x, 4); | |
362 | let ctv = cbpi.is_coded_top(mb_x, 5); | |
363 | let ccv = cbpi.is_coded(mb_x, 5); | |
364 | let q = cbpi.get_q(mb_w + mb_x); | |
365 | if ctu && ccu { deblock_hor(buf, 1, q, offu + mb_x * 8); } | |
366 | if ctv && ccv { deblock_hor(buf, 2, q, offv + mb_x * 8); } | |
367 | } | |
368 | let mut leftu = false; | |
369 | let mut leftv = false; | |
370 | let offu = buf.get_offset(1) + (mb_y - 1) * 8 * strideu; | |
371 | let offv = buf.get_offset(2) + (mb_y - 1) * 8 * stridev; | |
372 | for mb_x in 0..mb_w { | |
373 | let ctu = cbpi.is_coded_top(mb_x, 4); | |
374 | let ctv = cbpi.is_coded_top(mb_x, 5); | |
375 | let qt = cbpi.get_q(mb_x); | |
376 | if leftu && ctu { deblock_ver(buf, 1, qt, offu + mb_x * 8); } | |
377 | if leftv && ctv { deblock_ver(buf, 2, qt, offv + mb_x * 8); } | |
378 | leftu = ctu; | |
379 | leftv = ctv; | |
380 | } | |
381 | } | |
382 | } | |
383 | } | |
384 | ||
385 | fn deblock_hor(buf: &mut NAVideoBuffer<u8>, comp: usize, q: u8, off: usize) { | |
386 | let stride = buf.get_stride(comp); | |
387 | let mut dptr = buf.get_data_mut(); | |
388 | let mut buf = dptr.as_mut_slice(); | |
389 | for x in 0..8 { | |
390 | let a = buf[off - 2 * stride + x] as i16; | |
391 | let b = buf[off - 1 * stride + x] as i16; | |
392 | let c = buf[off + 0 * stride + x] as i16; | |
393 | let d = buf[off + 1 * stride + x] as i16; | |
394 | let diff = ((a - d) * 3 + (c - b) * 8) >> 4; | |
395 | if (diff != 0) && (diff >= -32) && (diff < 32) { | |
396 | let d0 = diff.abs() * 2 - (q as i16); | |
397 | let d1 = if d0 < 0 { 0 } else { d0 }; | |
398 | let d2 = diff.abs() - d1; | |
399 | let d3 = if d2 < 0 { 0 } else { d2 }; | |
400 | ||
401 | let delta = if diff < 0 { -d3 } else { d3 }; | |
402 | ||
403 | let b1 = b + delta; | |
404 | if b1 < 0 { buf[off - 1 * stride + x] = 0; } | |
405 | else if b1 > 255 { buf[off - 1 * stride + x] = 0xFF; } | |
406 | else { buf[off - 1 * stride + x] = b1 as u8; } | |
407 | let c1 = c - delta; | |
408 | if c1 < 0 { buf[off + x] = 0; } | |
409 | else if c1 > 255 { buf[off + x] = 0xFF; } | |
410 | else { buf[off + x] = c1 as u8; } | |
411 | } | |
412 | } | |
413 | } | |
414 | ||
415 | fn deblock_ver(buf: &mut NAVideoBuffer<u8>, comp: usize, q: u8, off: usize) { | |
416 | let stride = buf.get_stride(comp); | |
417 | let mut dptr = buf.get_data_mut(); | |
418 | let mut buf = dptr.as_mut_slice(); | |
419 | for y in 0..8 { | |
420 | let a = buf[off - 2 + y * stride] as i16; | |
421 | let b = buf[off - 1 + y * stride] as i16; | |
422 | let c = buf[off + 0 + y * stride] as i16; | |
423 | let d = buf[off + 1 + y * stride] as i16; | |
424 | let diff = ((a - d) * 3 + (c - b) * 8) >> 4; | |
425 | if (diff != 0) && (diff >= -32) && (diff < 32) { | |
426 | let d0 = diff.abs() * 2 - (q as i16); | |
427 | let d1 = if d0 < 0 { 0 } else { d0 }; | |
428 | let d2 = diff.abs() - d1; | |
429 | let d3 = if d2 < 0 { 0 } else { d2 }; | |
430 | ||
431 | let delta = if diff < 0 { -d3 } else { d3 }; | |
432 | ||
433 | let b1 = b + delta; | |
434 | if b1 < 0 { buf[off - 1 + y * stride] = 0; } | |
435 | else if b1 > 255 { buf[off - 1 + y * stride] = 0xFF; } | |
436 | else { buf[off - 1 + y * stride] = b1 as u8; } | |
437 | let c1 = c - delta; | |
438 | if c1 < 0 { buf[off + y * stride] = 0; } | |
439 | else if c1 > 255 { buf[off + y * stride] = 0xFF; } | |
440 | else { buf[off + y * stride] = c1 as u8; } | |
441 | } | |
442 | } | |
cf64af13 KS |
443 | } |
444 | ||
445 | impl Intel263Decoder { | |
446 | fn new() -> Self { | |
447 | let mut coderead = H263ShortCodeReader::new(H263_INTRA_MCBPC); | |
448 | let intra_mcbpc_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); | |
449 | let mut coderead = H263ShortCodeReader::new(H263_INTER_MCBPC); | |
450 | let inter_mcbpc_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); | |
451 | let mut coderead = H263ShortCodeReader::new(H263_CBPY); | |
452 | let cbpy_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); | |
453 | let mut coderead = H263RLCodeReader::new(H263_RL_CODES); | |
454 | let rl_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); | |
455 | let mut coderead = H263RLCodeReader::new(H263_RL_CODES_AIC); | |
456 | let aic_rl_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); | |
457 | let mut coderead = H263ShortCodeReader::new(H263_MV); | |
458 | let mv_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); | |
459 | let tables = Tables { | |
460 | intra_mcbpc_cb: intra_mcbpc_cb, | |
461 | inter_mcbpc_cb: inter_mcbpc_cb, | |
462 | cbpy_cb: cbpy_cb, | |
463 | rl_cb: rl_cb, | |
464 | aic_rl_cb: aic_rl_cb, | |
465 | mv_cb: mv_cb, | |
466 | }; | |
467 | ||
468 | Intel263Decoder{ | |
469 | info: Rc::new(DUMMY_CODEC_INFO), | |
88c58b1b | 470 | dec: H263BaseDecoder::new(), |
cf64af13 KS |
471 | tables: tables, |
472 | } | |
473 | } | |
474 | } | |
475 | ||
476 | impl NADecoder for Intel263Decoder { | |
477 | fn init(&mut self, info: Rc<NACodecInfo>) -> DecoderResult<()> { | |
478 | if let NACodecTypeInfo::Video(vinfo) = info.get_properties() { | |
479 | let w = vinfo.get_width(); | |
480 | let h = vinfo.get_height(); | |
481 | let fmt = formats::YUV420_FORMAT; | |
482 | let myinfo = NACodecTypeInfo::Video(NAVideoInfo::new(w, h, false, fmt)); | |
483 | self.info = Rc::new(NACodecInfo::new_ref(info.get_name(), myinfo, info.get_extradata())); | |
484 | Ok(()) | |
485 | } else { | |
486 | Err(DecoderError::InvalidData) | |
487 | } | |
488 | } | |
489 | fn decode(&mut self, pkt: &NAPacket) -> DecoderResult<NAFrameRef> { | |
490 | let src = pkt.get_buffer(); | |
491 | ||
492 | if src.len() == 8 { | |
21c16d5f | 493 | let bret = self.dec.get_bframe(); |
cf64af13 KS |
494 | let buftype; |
495 | let is_skip; | |
496 | if let Ok(btype) = bret { | |
497 | buftype = btype; | |
498 | is_skip = false; | |
499 | } else { | |
500 | buftype = NABufferType::None; | |
501 | is_skip = true; | |
502 | } | |
503 | let mut frm = NAFrame::new_from_pkt(pkt, self.info.clone(), buftype); | |
504 | frm.set_keyframe(false); | |
21c16d5f | 505 | frm.set_frame_type(if is_skip { FrameType::Skip } else { FrameType::B }); |
cf64af13 KS |
506 | return Ok(Rc::new(RefCell::new(frm))); |
507 | } | |
cf64af13 KS |
508 | let mut ibr = Intel263BR::new(&src, &self.tables); |
509 | ||
510 | let bufinfo = self.dec.parse_frame(&mut ibr)?; | |
511 | ||
512 | let mut frm = NAFrame::new_from_pkt(pkt, self.info.clone(), bufinfo); | |
513 | frm.set_keyframe(self.dec.is_intra()); | |
514 | frm.set_frame_type(if self.dec.is_intra() { FrameType::I } else { FrameType::P }); | |
515 | Ok(Rc::new(RefCell::new(frm))) | |
516 | } | |
517 | } | |
518 | ||
519 | ||
520 | pub fn get_decoder() -> Box<NADecoder> { | |
521 | Box::new(Intel263Decoder::new()) | |
522 | } | |
523 | ||
524 | #[cfg(test)] | |
525 | mod test { | |
379fd781 | 526 | use test::dec_video::test_file_decoding; |
cf64af13 KS |
527 | #[test] |
528 | fn test_intel263() { | |
379fd781 | 529 | test_file_decoding("avi", "assets/neal73_saber.avi", Some(16), true, false, None); |
cf64af13 KS |
530 | } |
531 | } |