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be91b1c3 KS |
1 | use io::bitreader::*; |
2 | use io::codebook::*; | |
3 | use formats; | |
4 | use super::super::*; | |
5 | use super::*; | |
2a2aa421 | 6 | use super::code::H263BlockDSP; |
be91b1c3 KS |
7 | use super::decoder::*; |
8 | use super::data::*; | |
9 | ||
10 | #[allow(dead_code)] | |
11 | struct Tables { | |
12 | intra_mcbpc_cb: Codebook<u8>, | |
13 | inter_mcbpc_cb: Codebook<u8>, | |
14 | cbpy_cb: Codebook<u8>, | |
15 | rl_cb: Codebook<H263RLSym>, | |
16 | aic_rl_cb: Codebook<H263RLSym>, | |
17 | mv_cb: Codebook<u8>, | |
18 | } | |
19 | ||
20 | #[derive(Clone,Copy)] | |
21 | struct RPRInfo { | |
22 | present: bool, | |
23 | bits: u8, | |
24 | widths: [usize; 8], | |
25 | heights: [usize; 8], | |
26 | } | |
27 | ||
28 | struct RealVideo20Decoder { | |
29 | info: Rc<NACodecInfo>, | |
30 | dec: H263BaseDecoder, | |
31 | tables: Tables, | |
32 | w: usize, | |
33 | h: usize, | |
34 | minor_ver: u8, | |
35 | rpr: RPRInfo, | |
2a2aa421 | 36 | bdsp: H263BlockDSP, |
be91b1c3 KS |
37 | } |
38 | ||
39 | struct RealVideo20BR<'a> { | |
40 | br: BitReader<'a>, | |
41 | tables: &'a Tables, | |
42 | num_slices: usize, | |
43 | slice_no: usize, | |
44 | slice_off: Vec<u32>, | |
45 | w: usize, | |
46 | h: usize, | |
47 | mb_w: usize, | |
48 | mb_h: usize, | |
be91b1c3 | 49 | mb_pos_bits: u8, |
be91b1c3 KS |
50 | minor_ver: u8, |
51 | rpr: RPRInfo, | |
be91b1c3 KS |
52 | } |
53 | ||
54 | struct RV20SliceInfo { | |
55 | ftype: Type, | |
56 | qscale: u8, | |
57 | mb_x: usize, | |
58 | mb_y: usize, | |
59 | mb_pos: usize, | |
60 | w: usize, | |
61 | h: usize, | |
62 | } | |
63 | ||
64 | impl RV20SliceInfo { | |
65 | fn new(ftype: Type, qscale: u8, mb_x: usize, mb_y: usize, mb_pos: usize, w: usize, h: usize) -> Self { | |
66 | RV20SliceInfo { ftype: ftype, qscale: qscale, mb_x: mb_x, mb_y: mb_y, mb_pos: mb_pos, w: w, h: h } | |
67 | } | |
68 | } | |
69 | ||
70 | impl<'a> RealVideo20BR<'a> { | |
71 | fn new(src: &'a [u8], tables: &'a Tables, width: usize, height: usize, minor_ver: u8, rpr: RPRInfo) -> Self { | |
72 | let nslices = (src[0] as usize) + 1; | |
73 | let mut slice_offs = Vec::with_capacity(nslices); | |
74 | { | |
75 | let offs = &src[1..][..nslices * 8]; | |
76 | let mut br = BitReader::new(offs, offs.len(), BitReaderMode::BE); | |
77 | for _ in 0..nslices { | |
78 | br.skip(32).unwrap(); | |
79 | let off = br.read(32).unwrap(); | |
80 | slice_offs.push(off); | |
81 | } | |
82 | } | |
83 | let soff = nslices * 8 + 1; | |
84 | let mb_w = (width + 15) >> 4; | |
85 | let mb_h = (height + 15) >> 4; | |
86 | let max_pos = mb_w * mb_h - 1; | |
87 | let mut mbpb = 0; | |
88 | for i in 0..H263_MBB.len() { | |
89 | if max_pos <= H263_MBB[i].blocks { | |
90 | mbpb = H263_MBB[i].bits; | |
91 | break; | |
92 | } | |
93 | } | |
94 | RealVideo20BR { | |
95 | br: BitReader::new(&src[soff..], src.len() - soff, BitReaderMode::BE), | |
96 | tables: tables, | |
97 | num_slices: nslices, | |
98 | slice_no: 0, | |
99 | slice_off: slice_offs, | |
100 | w: width, | |
101 | h: height, | |
102 | mb_w: mb_w, | |
103 | mb_h: mb_h, | |
104 | mb_pos_bits: mbpb, | |
be91b1c3 KS |
105 | minor_ver: minor_ver, |
106 | rpr: rpr, | |
be91b1c3 KS |
107 | } |
108 | } | |
109 | ||
2a2aa421 | 110 | #[allow(unused_variables)] |
0c3b4923 | 111 | fn decode_block(&mut self, sstate: &SliceState, quant: u8, intra: bool, coded: bool, blk: &mut [i16; 64], plane_no: usize, acpred: ACPredMode) -> DecoderResult<()> { |
be91b1c3 KS |
112 | let mut br = &mut self.br; |
113 | let mut idx = 0; | |
2a2aa421 | 114 | if !sstate.is_iframe && intra { |
be91b1c3 KS |
115 | let mut dc = br.read(8).unwrap() as i16; |
116 | if dc == 255 { dc = 128; } | |
117 | blk[0] = dc << 3; | |
118 | idx = 1; | |
119 | } | |
120 | if !coded { return Ok(()); } | |
0c3b4923 KS |
121 | let scan = match acpred { |
122 | ACPredMode::Hor => H263_SCAN_V, | |
123 | ACPredMode::Ver => H263_SCAN_H, | |
124 | _ => H263_ZIGZAG, | |
125 | }; | |
be91b1c3 | 126 | |
2a2aa421 | 127 | let rl_cb = if sstate.is_iframe { &self.tables.aic_rl_cb } else { &self.tables.rl_cb }; |
be91b1c3 KS |
128 | let q_add = if quant == 0 { 0i16 } else { ((quant - 1) | 1) as i16 }; |
129 | let q = (quant * 2) as i16; | |
130 | while idx < 64 { | |
131 | let code = br.read_cb(rl_cb).unwrap(); | |
132 | let run; | |
133 | let mut level; | |
134 | let last; | |
135 | if !code.is_escape() { | |
136 | run = code.get_run(); | |
137 | level = code.get_level(); | |
138 | last = code.is_last(); | |
139 | if br.read_bool().unwrap() { level = -level; } | |
140 | level = (level * q) + q_add; | |
141 | } else { | |
142 | last = br.read_bool().unwrap(); | |
143 | run = br.read(6).unwrap() as u8; | |
144 | level = br.read_s(8).unwrap() as i16; | |
145 | if level == -128 { | |
146 | let low = br.read(5).unwrap() as i16; | |
147 | let top = br.read_s(6).unwrap() as i16; | |
148 | level = (top << 5) | low; | |
149 | } | |
150 | level = (level * q) + q_add; | |
151 | if level < -2048 { level = -2048; } | |
152 | if level > 2047 { level = 2047; } | |
153 | } | |
154 | idx += run; | |
155 | validate!(idx < 64); | |
0c3b4923 | 156 | let oidx = scan[idx as usize]; |
be91b1c3 KS |
157 | blk[oidx] = level; |
158 | idx += 1; | |
159 | if last { break; } | |
160 | } | |
161 | Ok(()) | |
162 | } | |
163 | } | |
164 | ||
165 | fn decode_mv_component(br: &mut BitReader, mv_cb: &Codebook<u8>) -> DecoderResult<i16> { | |
166 | let code = br.read_cb(mv_cb).unwrap() as i16; | |
167 | if code == 0 { return Ok(0) } | |
168 | if !br.read_bool().unwrap() { | |
169 | Ok(code) | |
170 | } else { | |
171 | Ok(-code) | |
172 | } | |
173 | } | |
174 | ||
175 | fn decode_mv(br: &mut BitReader, mv_cb: &Codebook<u8>) -> DecoderResult<MV> { | |
176 | let xval = decode_mv_component(br, mv_cb).unwrap(); | |
177 | let yval = decode_mv_component(br, mv_cb).unwrap(); | |
178 | //println!(" MV {},{} @ {}", xval, yval, br.tell()); | |
179 | Ok(MV::new(xval, yval)) | |
180 | } | |
181 | ||
182 | impl<'a> BlockDecoder for RealVideo20BR<'a> { | |
183 | ||
184 | #[allow(unused_variables)] | |
185 | fn decode_pichdr(&mut self) -> DecoderResult<PicInfo> { | |
186 | self.slice_no = 0; | |
187 | println!("decoding picture header size {}", if self.num_slices > 1 { self.slice_off[1] } else { ((self.br.tell() as u32) + (self.br.left() as u32))/8 }); | |
be91b1c3 KS |
188 | let shdr = self.read_slice_header().unwrap(); |
189 | println!("slice ends @ {}\n", self.br.tell()); | |
2a2aa421 | 190 | // self.slice_no += 1; |
be91b1c3 | 191 | validate!((shdr.mb_x == 0) && (shdr.mb_y == 0)); |
2a2aa421 | 192 | /* let mb_count; |
be91b1c3 KS |
193 | if self.slice_no < self.num_slices { |
194 | let pos = self.br.tell(); | |
195 | let shdr2 = self.read_slice_header().unwrap(); | |
196 | self.br.seek(pos as u32)?; | |
197 | mb_count = shdr2.mb_pos - shdr.mb_pos; | |
198 | } else { | |
199 | mb_count = self.mb_w * self.mb_h; | |
2a2aa421 | 200 | }*/ |
be91b1c3 | 201 | |
0c3b4923 KS |
202 | let plusinfo = Some(PlusInfo::new(shdr.ftype == Type::I, false, false, false)); |
203 | let picinfo = PicInfo::new(shdr.w, shdr.h, shdr.ftype, false, false, shdr.qscale, 0, None, plusinfo); | |
be91b1c3 KS |
204 | Ok(picinfo) |
205 | } | |
206 | ||
207 | #[allow(unused_variables)] | |
2a2aa421 | 208 | fn decode_slice_header(&mut self, info: &PicInfo) -> DecoderResult<SliceInfo> { |
be91b1c3 KS |
209 | //println!("read slice {} header", self.slice_no); |
210 | let shdr = self.read_slice_header().unwrap(); | |
211 | self.slice_no += 1; | |
212 | let mb_count; | |
213 | if self.slice_no < self.num_slices { | |
0c3b4923 | 214 | let pos = self.br.tell(); |
be91b1c3 KS |
215 | let shdr2 = self.read_slice_header().unwrap(); |
216 | mb_count = shdr2.mb_pos - shdr.mb_pos; | |
0c3b4923 | 217 | self.br.seek(pos as u32)?; |
be91b1c3 KS |
218 | } else { |
219 | mb_count = self.mb_w * self.mb_h - shdr.mb_pos; | |
220 | } | |
2a2aa421 | 221 | let ret = SliceInfo::new(shdr.mb_x, shdr.mb_y, shdr.mb_pos + mb_count, shdr.qscale); |
be91b1c3 KS |
222 | |
223 | Ok(ret) | |
224 | } | |
225 | ||
2a2aa421 | 226 | fn decode_block_header(&mut self, info: &PicInfo, slice: &SliceInfo, sstate: &SliceState) -> DecoderResult<BlockInfo> { |
be91b1c3 KS |
227 | let mut br = &mut self.br; |
228 | let mut q = slice.get_quant(); | |
229 | match info.get_mode() { | |
230 | Type::I => { | |
231 | let mut cbpc = br.read_cb(&self.tables.intra_mcbpc_cb).unwrap(); | |
232 | while cbpc == 8 { cbpc = br.read_cb(&self.tables.intra_mcbpc_cb).unwrap(); } | |
0c3b4923 KS |
233 | let mut acpred = ACPredMode::None; |
234 | if let Some(ref pi) = info.plusinfo { | |
235 | if pi.aic { | |
236 | let acpp = br.read_bool()?; | |
237 | acpred = ACPredMode::DC; | |
238 | println!(" acp {} @ {}", acpp as u8, br.tell()); | |
239 | if acpp { | |
240 | acpred = if br.read_bool()? { ACPredMode::Hor } else { ACPredMode::Ver }; | |
241 | } | |
242 | } | |
243 | println!(" @ {}", br.tell()); | |
244 | } | |
be91b1c3 KS |
245 | let cbpy = br.read_cb(&self.tables.cbpy_cb).unwrap(); |
246 | let cbp = (cbpy << 2) | (cbpc & 3); | |
247 | let dquant = (cbpc & 4) != 0; | |
248 | if dquant { | |
249 | let idx = br.read(2).unwrap() as usize; | |
250 | q = ((q as i16) + (H263_DQUANT_TAB[idx] as i16)) as u8; | |
251 | } | |
2a2aa421 | 252 | println!(" MB {},{} CBP {:X} @ {}", sstate.mb_x, sstate.mb_y, cbp, br.tell()); |
0c3b4923 KS |
253 | let mut binfo = BlockInfo::new(Type::I, cbp, q); |
254 | binfo.set_acpred(acpred); | |
255 | Ok(binfo) | |
be91b1c3 KS |
256 | }, |
257 | Type::P => { | |
258 | if br.read_bool().unwrap() { | |
be91b1c3 KS |
259 | return Ok(BlockInfo::new(Type::Skip, 0, info.get_quant())); |
260 | } | |
261 | let mut cbpc = br.read_cb(&self.tables.inter_mcbpc_cb).unwrap(); | |
262 | while cbpc == 20 { cbpc = br.read_cb(&self.tables.inter_mcbpc_cb).unwrap(); } | |
263 | let is_intra = (cbpc & 0x04) != 0; | |
264 | let dquant = (cbpc & 0x08) != 0; | |
265 | let is_4x4 = (cbpc & 0x10) != 0; | |
266 | if is_intra { | |
267 | let cbpy = br.read_cb(&self.tables.cbpy_cb).unwrap(); | |
268 | let cbp = (cbpy << 2) | (cbpc & 3); | |
269 | if dquant { | |
270 | let idx = br.read(2).unwrap() as usize; | |
271 | q = ((q as i16) + (H263_DQUANT_TAB[idx] as i16)) as u8; | |
272 | } | |
273 | let binfo = BlockInfo::new(Type::I, cbp, q); | |
be91b1c3 KS |
274 | return Ok(binfo); |
275 | } | |
276 | ||
277 | let mut cbpy = br.read_cb(&self.tables.cbpy_cb).unwrap(); | |
278 | // if /* !aiv && */(cbpc & 3) != 3 { | |
279 | cbpy ^= 0xF; | |
280 | // } | |
281 | let cbp = (cbpy << 2) | (cbpc & 3); | |
282 | if dquant { | |
283 | let idx = br.read(2).unwrap() as usize; | |
284 | q = ((q as i16) + (H263_DQUANT_TAB[idx] as i16)) as u8; | |
285 | } | |
2a2aa421 | 286 | println!(" MB {}.{} cbp = {:X}", sstate.mb_x, sstate.mb_y, cbp); |
be91b1c3 KS |
287 | let mut binfo = BlockInfo::new(Type::P, cbp, q); |
288 | if !is_4x4 { | |
289 | let mvec: [MV; 1] = [decode_mv(br, &self.tables.mv_cb).unwrap()]; | |
290 | binfo.set_mv(&mvec); | |
291 | } else { | |
292 | let mvec: [MV; 4] = [ | |
293 | decode_mv(br, &self.tables.mv_cb).unwrap(), | |
294 | decode_mv(br, &self.tables.mv_cb).unwrap(), | |
295 | decode_mv(br, &self.tables.mv_cb).unwrap(), | |
296 | decode_mv(br, &self.tables.mv_cb).unwrap() | |
297 | ]; | |
298 | binfo.set_mv(&mvec); | |
299 | } | |
be91b1c3 KS |
300 | Ok(binfo) |
301 | }, | |
302 | _ => { println!("wrong info mode"); Err(DecoderError::InvalidData) }, | |
303 | } | |
304 | } | |
305 | ||
2a2aa421 | 306 | fn decode_block_intra(&mut self, info: &BlockInfo, sstate: &SliceState, quant: u8, no: usize, coded: bool, blk: &mut [i16; 64]) -> DecoderResult<()> { |
0c3b4923 | 307 | self.decode_block(sstate, quant, true, coded, blk, if no < 4 { 0 } else { no - 3 }, info.get_acpred()) |
be91b1c3 KS |
308 | } |
309 | ||
310 | #[allow(unused_variables)] | |
2a2aa421 | 311 | fn decode_block_inter(&mut self, info: &BlockInfo, sstate: &SliceState, quant: u8, no: usize, coded: bool, blk: &mut [i16; 64]) -> DecoderResult<()> { |
0c3b4923 | 312 | self.decode_block(sstate, quant, false, coded, blk, if no < 4 { 0 } else { no - 3 }, ACPredMode::None) |
be91b1c3 KS |
313 | } |
314 | ||
2a2aa421 | 315 | fn is_slice_end(&mut self) -> bool { false } |
be91b1c3 | 316 | |
2a2aa421 | 317 | fn is_gob(&mut self) -> bool { false } |
be91b1c3 KS |
318 | } |
319 | ||
320 | impl<'a> RealVideo20BR<'a> { | |
2a2aa421 | 321 | #[allow(unused_variables)] |
be91b1c3 KS |
322 | fn read_slice_header(&mut self) -> DecoderResult<RV20SliceInfo> { |
323 | validate!(self.slice_no < self.num_slices); | |
324 | ||
325 | let mut br = &mut self.br; | |
326 | br.seek(self.slice_off[self.slice_no] * 8).unwrap(); | |
327 | //println!(" slice at off {}", br.tell()); | |
328 | ||
329 | let frm_type = br.read(2).unwrap(); | |
330 | let ftype = match frm_type { | |
331 | 0 | 1 => { Type::I }, | |
332 | 2 => { Type::P }, | |
333 | _ => { Type::Skip }, | |
334 | }; | |
335 | ||
336 | let marker = br.read(1).unwrap(); | |
337 | validate!(marker == 0); | |
338 | let qscale = br.read(5).unwrap() as u8; | |
339 | validate!(qscale > 0); | |
340 | if self.minor_ver >= 2 { | |
341 | br.skip(1).unwrap(); // loop filter | |
342 | } | |
343 | let seq = if self.minor_ver <= 1 { | |
344 | br.read(8).unwrap() << 7 | |
345 | } else { | |
346 | br.read(13).unwrap() << 2 | |
347 | }; | |
348 | let w; | |
349 | let h; | |
350 | if self.rpr.present { | |
351 | let rpr = br.read(self.rpr.bits).unwrap() as usize; | |
352 | if rpr == 0 { | |
353 | w = self.w; | |
354 | h = self.h; | |
355 | } else { | |
356 | w = self.rpr.widths[rpr]; | |
357 | h = self.rpr.heights[rpr]; | |
358 | validate!((w != 0) && (h != 0)); | |
359 | } | |
360 | } else { | |
361 | w = self.w; | |
362 | h = self.h; | |
363 | } | |
364 | ||
365 | let mb_pos = br.read(self.mb_pos_bits).unwrap() as usize; | |
366 | let mb_x = mb_pos % self.mb_w; | |
367 | let mb_y = mb_pos / self.mb_w; | |
368 | ||
369 | br.skip(1).unwrap(); // no rounding | |
370 | ||
371 | if (self.minor_ver <= 1) && (frm_type == 3) { | |
372 | br.skip(5).unwrap(); | |
373 | } | |
374 | println!("slice q {} mb {},{}", qscale, mb_x, mb_y); | |
375 | ||
376 | Ok(RV20SliceInfo::new(ftype, qscale, mb_x, mb_y, mb_pos, w, h)) | |
377 | } | |
378 | } | |
379 | ||
be91b1c3 KS |
380 | impl RealVideo20Decoder { |
381 | fn new() -> Self { | |
382 | let mut coderead = H263ShortCodeReader::new(H263_INTRA_MCBPC); | |
383 | let intra_mcbpc_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); | |
384 | let mut coderead = H263ShortCodeReader::new(H263_INTER_MCBPC); | |
385 | let inter_mcbpc_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); | |
386 | let mut coderead = H263ShortCodeReader::new(H263_CBPY); | |
387 | let cbpy_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); | |
388 | let mut coderead = H263RLCodeReader::new(H263_RL_CODES); | |
389 | let rl_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); | |
390 | let mut coderead = H263RLCodeReader::new(H263_RL_CODES_AIC); | |
391 | let aic_rl_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); | |
392 | let mut coderead = H263ShortCodeReader::new(H263_MV); | |
393 | let mv_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); | |
394 | ||
395 | let tables = Tables { | |
396 | intra_mcbpc_cb: intra_mcbpc_cb, | |
397 | inter_mcbpc_cb: inter_mcbpc_cb, | |
398 | cbpy_cb: cbpy_cb, | |
399 | rl_cb: rl_cb, | |
400 | aic_rl_cb: aic_rl_cb, | |
401 | mv_cb: mv_cb, | |
402 | }; | |
403 | ||
404 | RealVideo20Decoder{ | |
405 | info: Rc::new(DUMMY_CODEC_INFO), | |
406 | dec: H263BaseDecoder::new(), | |
407 | tables: tables, | |
408 | w: 0, | |
409 | h: 0, | |
410 | minor_ver: 0, | |
411 | rpr: RPRInfo { present: false, bits: 0, widths: [0; 8], heights: [0; 8] }, | |
2a2aa421 | 412 | bdsp: H263BlockDSP::new(), |
be91b1c3 KS |
413 | } |
414 | } | |
415 | } | |
416 | ||
417 | impl NADecoder for RealVideo20Decoder { | |
2a2aa421 | 418 | #[allow(unused_variables)] |
be91b1c3 KS |
419 | fn init(&mut self, info: Rc<NACodecInfo>) -> DecoderResult<()> { |
420 | if let NACodecTypeInfo::Video(vinfo) = info.get_properties() { | |
421 | let w = vinfo.get_width(); | |
422 | let h = vinfo.get_height(); | |
423 | let fmt = formats::YUV420_FORMAT; | |
424 | let myinfo = NACodecTypeInfo::Video(NAVideoInfo::new(w, h, false, fmt)); | |
425 | self.info = Rc::new(NACodecInfo::new_ref(info.get_name(), myinfo, info.get_extradata())); | |
426 | self.w = w; | |
427 | self.h = h; | |
428 | ||
429 | let edata = info.get_extradata().unwrap(); | |
430 | let src: &[u8] = &edata; | |
431 | let ver = ((src[4] as u32) << 12) | ((src[5] as u32) << 4) | ((src[6] as u32) >> 4); | |
432 | let maj_ver = ver >> 16; | |
433 | let min_ver = (ver >> 8) & 0xFF; | |
434 | let mic_ver = ver & 0xFF; | |
435 | println!("ver {:06X}", ver); | |
436 | validate!(maj_ver == 2); | |
437 | self.minor_ver = min_ver as u8; | |
438 | let rprb = src[1] & 7; | |
439 | if rprb == 0 { | |
440 | self.rpr.present = false; | |
441 | } else { | |
442 | self.rpr.present = true; | |
443 | self.rpr.bits = rprb as u8; | |
444 | for i in 4..(src.len()/2) { | |
445 | self.rpr.widths [i - 4] = (src[i * 2] as usize) * 4; | |
446 | self.rpr.heights[i - 4] = (src[i * 2 + 1] as usize) * 4; | |
447 | } | |
448 | } | |
449 | Ok(()) | |
450 | } else { | |
451 | println!(".unwrap().unwrap().unwrap()"); | |
452 | Err(DecoderError::InvalidData) | |
453 | } | |
454 | } | |
455 | fn decode(&mut self, pkt: &NAPacket) -> DecoderResult<NAFrameRef> { | |
456 | let src = pkt.get_buffer(); | |
457 | ||
458 | println!(" decode frame size {}, {} slices", src.len(), src[0]+1); | |
459 | let mut ibr = RealVideo20BR::new(&src, &self.tables, self.w, self.h, self.minor_ver, self.rpr); | |
460 | ||
2a2aa421 | 461 | let bufinfo = self.dec.parse_frame(&mut ibr, &self.bdsp).unwrap(); |
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462 | |
463 | let mut frm = NAFrame::new_from_pkt(pkt, self.info.clone(), bufinfo); | |
464 | frm.set_keyframe(self.dec.is_intra()); | |
465 | frm.set_frame_type(if self.dec.is_intra() { FrameType::I } else { FrameType::P }); | |
466 | Ok(Rc::new(RefCell::new(frm))) | |
467 | } | |
468 | } | |
469 | ||
470 | struct MBB { blocks: usize, bits: u8 } | |
471 | const H263_MBB: &[MBB; 7] = &[ | |
472 | MBB{ blocks: 47, bits: 6 }, | |
473 | MBB{ blocks: 98, bits: 7 }, | |
474 | MBB{ blocks: 395, bits: 9 }, | |
475 | MBB{ blocks: 1583, bits: 11 }, | |
476 | MBB{ blocks: 6335, bits: 13 }, | |
477 | MBB{ blocks: 9215, bits: 14 }, | |
478 | MBB{ blocks: 65536, bits: 14 }, | |
479 | ]; | |
480 | ||
481 | pub fn get_decoder() -> Box<NADecoder> { | |
482 | Box::new(RealVideo20Decoder::new()) | |
483 | } | |
484 | ||
485 | #[cfg(test)] | |
486 | mod test { | |
487 | use test::dec_video::test_file_decoding; | |
488 | #[test] | |
489 | fn test_rv20() { | |
0c3b4923 | 490 | test_file_decoding("realmedia", "assets/RV/rv20_cook_640x352_realproducer_plus_8.51.rm", /*None*/Some(1000), true, false, Some("rv20")); |
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491 | } |
492 | } |