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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::blockdsp; | |
8 | use nihav_codec_support::codecs::h263::*; | |
9 | use nihav_codec_support::codecs::h263::code::{H263_INTERP_FUNCS, H263_INTERP_AVG_FUNCS}; | |
10 | use nihav_codec_support::codecs::h263::decoder::*; | |
11 | use nihav_codec_support::codecs::h263::data::*; | |
12 | ||
13 | #[allow(dead_code)] | |
14 | struct Tables { | |
15 | intra_mcbpc_cb: Codebook<u8>, | |
16 | inter_mcbpc_cb: Codebook<u8>, | |
17 | cbpy_cb: Codebook<u8>, | |
18 | rl_cb: Codebook<H263RLSym>, | |
19 | aic_rl_cb: Codebook<H263RLSym>, | |
20 | mv_cb: Codebook<u8>, | |
21 | } | |
22 | ||
23 | #[derive(Default)] | |
24 | struct I263BlockDSP {} | |
25 | ||
26 | struct Intel263Decoder { | |
27 | info: NACodecInfoRef, | |
28 | dec: H263BaseDecoder, | |
29 | tables: Tables, | |
30 | bdsp: I263BlockDSP, | |
31 | lastframe: Option<NABufferType>, | |
32 | lastpts: Option<u64>, | |
33 | } | |
34 | ||
35 | struct Intel263BR<'a> { | |
36 | br: BitReader<'a>, | |
37 | tables: &'a Tables, | |
38 | gob_no: usize, | |
39 | mb_w: usize, | |
40 | is_pb: bool, | |
41 | is_ipb: bool, | |
42 | } | |
43 | ||
44 | const W1: i32 = 2841; | |
45 | const W2: i32 = 2676; | |
46 | const W3: i32 = 2408; | |
47 | const W5: i32 = 1609; | |
48 | const W6: i32 = 1108; | |
49 | const W7: i32 = 565; | |
50 | const W8: i32 = 181; | |
51 | ||
52 | const ROW_SHIFT: u8 = 8; | |
53 | const COL_SHIFT: u8 = 14; | |
54 | ||
55 | #[allow(clippy::erasing_op)] | |
56 | fn idct_row(row: &mut [i16]) { | |
57 | let in0 = ((i32::from(row[0])) << 11) + (1 << (ROW_SHIFT - 1)); | |
58 | let in1 = (i32::from(row[4])) << 11; | |
59 | let in2 = i32::from(row[6]); | |
60 | let in3 = i32::from(row[2]); | |
61 | let in4 = i32::from(row[1]); | |
62 | let in5 = i32::from(row[7]); | |
63 | let in6 = i32::from(row[5]); | |
64 | let in7 = i32::from(row[3]); | |
65 | ||
66 | let tmp = W7 * (in4 + in5); | |
67 | let a4 = tmp + (W1 - W7) * in4; | |
68 | let a5 = tmp - (W1 + W7) * in5; | |
69 | ||
70 | let tmp = W3 * (in6 + in7); | |
71 | let a6 = tmp - (W3 - W5) * in6; | |
72 | let a7 = tmp - (W3 + W5) * in7; | |
73 | ||
74 | let tmp = in0 + in1; | |
75 | ||
76 | let a0 = in0 - in1; | |
77 | let t1 = W6 * (in2 + in3); | |
78 | let a2 = t1 - (W2 + W6) * in2; | |
79 | let a3 = t1 + (W2 - W6) * in3; | |
80 | let b1 = a4 + a6; | |
81 | ||
82 | let b4 = a4 - a6; | |
83 | let t2 = a5 - a7; | |
84 | let b6 = a5 + a7; | |
85 | let b7 = tmp + a3; | |
86 | let b5 = tmp - a3; | |
87 | let b3 = a0 + a2; | |
88 | let b0 = a0 - a2; | |
89 | let b2 = (W8 * (b4 + t2) + 128) >> 8; | |
90 | let b4 = (W8 * (b4 - t2) + 128) >> 8; | |
91 | ||
92 | row[0] = ((b7 + b1) >> ROW_SHIFT) as i16; | |
93 | row[7] = ((b7 - b1) >> ROW_SHIFT) as i16; | |
94 | row[1] = ((b3 + b2) >> ROW_SHIFT) as i16; | |
95 | row[6] = ((b3 - b2) >> ROW_SHIFT) as i16; | |
96 | row[2] = ((b0 + b4) >> ROW_SHIFT) as i16; | |
97 | row[5] = ((b0 - b4) >> ROW_SHIFT) as i16; | |
98 | row[3] = ((b5 + b6) >> ROW_SHIFT) as i16; | |
99 | row[4] = ((b5 - b6) >> ROW_SHIFT) as i16; | |
100 | } | |
101 | ||
102 | #[allow(clippy::erasing_op)] | |
103 | fn idct_col(blk: &mut [i16; 64], off: usize) { | |
104 | let in0 = ((i32::from(blk[off + 0*8])) << 8) + (1 << (COL_SHIFT - 1)); | |
105 | let in1 = (i32::from(blk[off + 4*8])) << 8; | |
106 | let in2 = i32::from(blk[off + 6*8]); | |
107 | let in3 = i32::from(blk[off + 2*8]); | |
108 | let in4 = i32::from(blk[off + 1*8]); | |
109 | let in5 = i32::from(blk[off + 7*8]); | |
110 | let in6 = i32::from(blk[off + 5*8]); | |
111 | let in7 = i32::from(blk[off + 3*8]); | |
112 | ||
113 | let tmp = W7 * (in4 + in5); | |
114 | let a4 = (tmp + (W1 - W7) * in4) >> 3; | |
115 | let a5 = (tmp - (W1 + W7) * in5) >> 3; | |
116 | ||
117 | let tmp = W3 * (in6 + in7); | |
118 | let a6 = (tmp - (W3 - W5) * in6) >> 3; | |
119 | let a7 = (tmp - (W3 + W5) * in7) >> 3; | |
120 | ||
121 | let tmp = in0 + in1; | |
122 | ||
123 | let a0 = in0 - in1; | |
124 | let t1 = W6 * (in2 + in3); | |
125 | let a2 = (t1 - (W2 + W6) * in2) >> 3; | |
126 | let a3 = (t1 + (W2 - W6) * in3) >> 3; | |
127 | let b1 = a4 + a6; | |
128 | ||
129 | let b4 = a4 - a6; | |
130 | let t2 = a5 - a7; | |
131 | let b6 = a5 + a7; | |
132 | let b7 = tmp + a3; | |
133 | let b5 = tmp - a3; | |
134 | let b3 = a0 + a2; | |
135 | let b0 = a0 - a2; | |
136 | let b2 = (W8 * (b4 + t2) + 128) >> 8; | |
137 | let b4 = (W8 * (b4 - t2) + 128) >> 8; | |
138 | ||
139 | blk[off + 0*8] = ((b7 + b1) >> COL_SHIFT) as i16; | |
140 | blk[off + 7*8] = ((b7 - b1) >> COL_SHIFT) as i16; | |
141 | blk[off + 1*8] = ((b3 + b2) >> COL_SHIFT) as i16; | |
142 | blk[off + 6*8] = ((b3 - b2) >> COL_SHIFT) as i16; | |
143 | blk[off + 2*8] = ((b0 + b4) >> COL_SHIFT) as i16; | |
144 | blk[off + 5*8] = ((b0 - b4) >> COL_SHIFT) as i16; | |
145 | blk[off + 3*8] = ((b5 + b6) >> COL_SHIFT) as i16; | |
146 | blk[off + 4*8] = ((b5 - b6) >> COL_SHIFT) as i16; | |
147 | } | |
148 | ||
149 | const FILTER_STRENGTH: [u8; 32] = [ | |
150 | 1, 1, 2, 2, 3, 3, 4, 4, 4, 5, 5, 5, 6, 6, 7, 7, | |
151 | 7, 8, 8, 8, 9, 9, 9, 10, 10, 10, 11, 11, 11, 12, 12, 12 | |
152 | ]; | |
153 | ||
154 | #[allow(clippy::erasing_op)] | |
155 | fn deblock_hor(buf: &mut NAVideoBuffer<u8>, comp: usize, strength: u8, off: usize) { | |
156 | let stride = buf.get_stride(comp); | |
157 | let dptr = buf.get_data_mut().unwrap(); | |
158 | let buf = dptr.as_mut_slice(); | |
159 | for x in 0..8 { | |
160 | let a = buf[off - 2 * stride + x] as i16; | |
161 | let b = buf[off - 1 * stride + x] as i16; | |
162 | let c = buf[off + 0 * stride + x] as i16; | |
163 | let d = buf[off + 1 * stride + x] as i16; | |
164 | let diff = (3 * (a - d) + 8 * (c - b)) / 16; | |
165 | if (diff != 0) && (diff > -24) && (diff < 24) { | |
166 | let d1a = (diff.abs() - 2 * (diff.abs() - (strength as i16)).max(0)).max(0); | |
167 | let d1 = if diff < 0 { -d1a } else { d1a }; | |
168 | ||
169 | buf[off - 1 * stride + x] = (b + d1).max(0).min(255) as u8; | |
170 | buf[off + 0 * stride + x] = (c - d1).max(0).min(255) as u8; | |
171 | } | |
172 | } | |
173 | } | |
174 | ||
175 | fn deblock_ver(buf: &mut NAVideoBuffer<u8>, comp: usize, strength: u8, off: usize) { | |
176 | let stride = buf.get_stride(comp); | |
177 | let dptr = buf.get_data_mut().unwrap(); | |
178 | let buf = dptr.as_mut_slice(); | |
179 | for y in 0..8 { | |
180 | let a = buf[off - 2 + y * stride] as i16; | |
181 | let b = buf[off - 1 + y * stride] as i16; | |
182 | let c = buf[off + 0 + y * stride] as i16; | |
183 | let d = buf[off + 1 + y * stride] as i16; | |
184 | let diff = (3 * (a - d) + 8 * (c - b)) / 16; | |
185 | if (diff != 0) && (diff > -24) && (diff < 24) { | |
186 | let d1a = (diff.abs() - 2 * (diff.abs() - (strength as i16)).max(0)).max(0); | |
187 | let d1 = if diff < 0 { -d1a } else { d1a }; | |
188 | ||
189 | buf[off - 1 + y * stride] = (b + d1).max(0).min(255) as u8; | |
190 | buf[off + y * stride] = (c - d1).max(0).min(255) as u8; | |
191 | } | |
192 | } | |
193 | } | |
194 | ||
195 | impl BlockDSP for I263BlockDSP { | |
196 | fn idct(&self, blk: &mut [i16; 64]) { | |
197 | for i in 0..8 { idct_row(&mut blk[i*8..(i+1)*8]); } | |
198 | for i in 0..8 { idct_col(blk, i); } | |
199 | } | |
200 | fn copy_blocks(&self, dst: &mut NAVideoBuffer<u8>, src: NAVideoBufferRef<u8>, xpos: usize, ypos: usize, mv: MV) { | |
201 | let mode = ((mv.x & 1) + (mv.y & 1) * 2) as usize; | |
202 | let cmode = (if (mv.x & 3) != 0 { 1 } else { 0 }) + (if (mv.y & 3) != 0 { 2 } else { 0 }); | |
203 | ||
204 | let mut dst = NASimpleVideoFrame::from_video_buf(dst).unwrap(); | |
205 | ||
206 | blockdsp::copy_block(&mut dst, src.clone(), 0, xpos, ypos, mv.x >> 1, mv.y >> 1, 16, 16, 0, 1, mode, H263_INTERP_FUNCS); | |
207 | blockdsp::copy_block(&mut dst, src.clone(), 1, xpos >> 1, ypos >> 1, mv.x >> 2, mv.y >> 2, 8, 8, 0, 1, cmode, H263_INTERP_FUNCS); | |
208 | blockdsp::copy_block(&mut dst, src.clone(), 2, xpos >> 1, ypos >> 1, mv.x >> 2, mv.y >> 2, 8, 8, 0, 1, cmode, H263_INTERP_FUNCS); | |
209 | } | |
210 | fn copy_blocks8x8(&self, dst: &mut NAVideoBuffer<u8>, src: NAVideoBufferRef<u8>, xpos: usize, ypos: usize, mvs: &[MV; 4]) { | |
211 | let mut dst = NASimpleVideoFrame::from_video_buf(dst).unwrap(); | |
212 | ||
213 | for i in 0..4 { | |
214 | let xadd = (i & 1) * 8; | |
215 | let yadd = (i & 2) * 4; | |
216 | let mode = ((mvs[i].x & 1) + (mvs[i].y & 1) * 2) as usize; | |
217 | ||
218 | blockdsp::copy_block(&mut dst, src.clone(), 0, xpos + xadd, ypos + yadd, mvs[i].x >> 1, mvs[i].y >> 1, 8, 8, 0, 1, mode, H263_INTERP_FUNCS); | |
219 | } | |
220 | ||
221 | let sum_mv = mvs[0] + mvs[1] + mvs[2] + mvs[3]; | |
222 | let cmx = (sum_mv.x >> 3) + H263_CHROMA_ROUND[(sum_mv.x & 0xF) as usize]; | |
223 | let cmy = (sum_mv.y >> 3) + H263_CHROMA_ROUND[(sum_mv.y & 0xF) as usize]; | |
224 | let mode = ((cmx & 1) + (cmy & 1) * 2) as usize; | |
225 | for plane in 1..3 { | |
226 | blockdsp::copy_block(&mut dst, src.clone(), plane, xpos >> 1, ypos >> 1, cmx >> 1, cmy >> 1, 8, 8, 0, 1, mode, H263_INTERP_FUNCS); | |
227 | } | |
228 | } | |
229 | fn avg_blocks(&self, dst: &mut NAVideoBuffer<u8>, src: NAVideoBufferRef<u8>, xpos: usize, ypos: usize, mv: MV) { | |
230 | let mode = ((mv.x & 1) + (mv.y & 1) * 2) as usize; | |
231 | let cmode = (if (mv.x & 3) != 0 { 1 } else { 0 }) + (if (mv.y & 3) != 0 { 2 } else { 0 }); | |
232 | ||
233 | let mut dst = NASimpleVideoFrame::from_video_buf(dst).unwrap(); | |
234 | ||
235 | blockdsp::copy_block(&mut dst, src.clone(), 0, xpos, ypos, mv.x >> 1, mv.y >> 1, 16, 16, 0, 1, mode, H263_INTERP_AVG_FUNCS); | |
236 | blockdsp::copy_block(&mut dst, src.clone(), 1, xpos >> 1, ypos >> 1, mv.x >> 2, mv.y >> 2, 8, 8, 0, 1, cmode, H263_INTERP_AVG_FUNCS); | |
237 | blockdsp::copy_block(&mut dst, src.clone(), 2, xpos >> 1, ypos >> 1, mv.x >> 2, mv.y >> 2, 8, 8, 0, 1, cmode, H263_INTERP_AVG_FUNCS); | |
238 | } | |
239 | fn avg_blocks8x8(&self, dst: &mut NAVideoBuffer<u8>, src: NAVideoBufferRef<u8>, xpos: usize, ypos: usize, mvs: &[MV; 4]) { | |
240 | let mut dst = NASimpleVideoFrame::from_video_buf(dst).unwrap(); | |
241 | ||
242 | for i in 0..4 { | |
243 | let xadd = (i & 1) * 8; | |
244 | let yadd = (i & 2) * 4; | |
245 | let mode = ((mvs[i].x & 1) + (mvs[i].y & 1) * 2) as usize; | |
246 | ||
247 | blockdsp::copy_block(&mut dst, src.clone(), 0, xpos + xadd, ypos + yadd, mvs[i].x >> 1, mvs[i].y >> 1, 8, 8, 0, 1, mode, H263_INTERP_AVG_FUNCS); | |
248 | } | |
249 | ||
250 | let sum_mv = mvs[0] + mvs[1] + mvs[2] + mvs[3]; | |
251 | let cmx = (sum_mv.x >> 3) + H263_CHROMA_ROUND[(sum_mv.x & 0xF) as usize]; | |
252 | let cmy = (sum_mv.y >> 3) + H263_CHROMA_ROUND[(sum_mv.y & 0xF) as usize]; | |
253 | let mode = ((cmx & 1) + (cmy & 1) * 2) as usize; | |
254 | for plane in 1..3 { | |
255 | blockdsp::copy_block(&mut dst, src.clone(), plane, xpos >> 1, ypos >> 1, cmx >> 1, cmy >> 1, 8, 8, 0, 1, mode, H263_INTERP_AVG_FUNCS); | |
256 | } | |
257 | } | |
258 | fn filter_row(&self, buf: &mut NAVideoBuffer<u8>, mb_y: usize, mb_w: usize, cbpi: &CBPInfo) { | |
259 | let stride = buf.get_stride(0); | |
260 | let mut off = buf.get_offset(0) + mb_y * 16 * stride; | |
261 | for mb_x in 0..mb_w { | |
262 | let coff = off; | |
263 | let coded0 = cbpi.is_coded(mb_x, 0); | |
264 | let coded1 = cbpi.is_coded(mb_x, 1); | |
265 | let q = cbpi.get_q(mb_w + mb_x); | |
266 | let str = if q < 32 { FILTER_STRENGTH[q as usize] } else { 0 }; | |
267 | if mb_y != 0 { | |
268 | if coded0 && cbpi.is_coded_top(mb_x, 0) { deblock_hor(buf, 0, str, coff); } | |
269 | if coded1 && cbpi.is_coded_top(mb_x, 1) { deblock_hor(buf, 0, str, coff + 8); } | |
270 | } | |
271 | let coff = off + 8 * stride; | |
272 | if cbpi.is_coded(mb_x, 2) && coded0 { deblock_hor(buf, 0, q, coff); } | |
273 | if cbpi.is_coded(mb_x, 3) && coded1 { deblock_hor(buf, 0, q, coff + 8); } | |
274 | off += 16; | |
275 | } | |
276 | let mut leftt = false; | |
277 | let mut leftc = false; | |
278 | let mut off = buf.get_offset(0) + mb_y * 16 * stride; | |
279 | for mb_x in 0..mb_w { | |
280 | let ctop0 = cbpi.is_coded_top(mb_x, 0); | |
281 | let ctop1 = cbpi.is_coded_top(mb_x, 0); | |
282 | let ccur0 = cbpi.is_coded(mb_x, 0); | |
283 | let ccur1 = cbpi.is_coded(mb_x, 1); | |
284 | let q = cbpi.get_q(mb_w + mb_x); | |
285 | let str = if q < 32 { FILTER_STRENGTH[q as usize] } else { 0 }; | |
286 | if mb_y != 0 { | |
287 | let coff = off - 8 * stride; | |
288 | let qtop = cbpi.get_q(mb_x); | |
289 | let strtop = if qtop < 32 { FILTER_STRENGTH[qtop as usize] } else { 0 }; | |
290 | if leftt && ctop0 { deblock_ver(buf, 0, strtop, coff); } | |
291 | if ctop0 && ctop1 { deblock_ver(buf, 0, strtop, coff + 8); } | |
292 | } | |
293 | if leftc && ccur0 { deblock_ver(buf, 0, str, off); } | |
294 | if ccur0 && ccur1 { deblock_ver(buf, 0, str, off + 8); } | |
295 | leftt = ctop1; | |
296 | leftc = ccur1; | |
297 | off += 16; | |
298 | } | |
299 | let strideu = buf.get_stride(1); | |
300 | let stridev = buf.get_stride(2); | |
301 | let offu = buf.get_offset(1) + mb_y * 8 * strideu; | |
302 | let offv = buf.get_offset(2) + mb_y * 8 * stridev; | |
303 | if mb_y != 0 { | |
304 | for mb_x in 0..mb_w { | |
305 | let ctu = cbpi.is_coded_top(mb_x, 4); | |
306 | let ccu = cbpi.is_coded(mb_x, 4); | |
307 | let ctv = cbpi.is_coded_top(mb_x, 5); | |
308 | let ccv = cbpi.is_coded(mb_x, 5); | |
309 | let q = cbpi.get_q(mb_w + mb_x); | |
310 | let str = if q < 32 { FILTER_STRENGTH[q as usize] } else { 0 }; | |
311 | if ctu && ccu { deblock_hor(buf, 1, str, offu + mb_x * 8); } | |
312 | if ctv && ccv { deblock_hor(buf, 2, str, offv + mb_x * 8); } | |
313 | } | |
314 | let mut leftu = false; | |
315 | let mut leftv = false; | |
316 | let offu = buf.get_offset(1) + (mb_y - 1) * 8 * strideu; | |
317 | let offv = buf.get_offset(2) + (mb_y - 1) * 8 * stridev; | |
318 | for mb_x in 0..mb_w { | |
319 | let ctu = cbpi.is_coded_top(mb_x, 4); | |
320 | let ctv = cbpi.is_coded_top(mb_x, 5); | |
321 | let qt = cbpi.get_q(mb_x); | |
322 | let strt = if qt < 32 { FILTER_STRENGTH[qt as usize] } else { 0 }; | |
323 | if leftu && ctu { deblock_ver(buf, 1, strt, offu + mb_x * 8); } | |
324 | if leftv && ctv { deblock_ver(buf, 2, strt, offv + mb_x * 8); } | |
325 | leftu = ctu; | |
326 | leftv = ctv; | |
327 | } | |
328 | } | |
329 | } | |
330 | } | |
331 | ||
332 | fn check_marker<'a>(br: &mut BitReader<'a>) -> DecoderResult<()> { | |
333 | let mark = br.read(1)?; | |
334 | validate!(mark == 1); | |
335 | Ok(()) | |
336 | } | |
337 | ||
338 | impl<'a> Intel263BR<'a> { | |
339 | fn new(src: &'a [u8], tables: &'a Tables) -> Self { | |
340 | Intel263BR { | |
341 | br: BitReader::new(src, BitReaderMode::BE), | |
342 | tables, | |
343 | gob_no: 0, | |
344 | mb_w: 0, | |
345 | is_pb: false, | |
346 | is_ipb: false, | |
347 | } | |
348 | } | |
349 | ||
350 | fn decode_block(&mut self, quant: u8, intra: bool, coded: bool, blk: &mut [i16; 64]) -> DecoderResult<()> { | |
351 | let br = &mut self.br; | |
352 | let mut idx = 0; | |
353 | if intra { | |
354 | let mut dc = br.read(8)?; | |
355 | if dc == 255 { dc = 128; } | |
356 | blk[0] = (dc as i16) << 3; | |
357 | idx = 1; | |
358 | } | |
359 | if !coded { return Ok(()); } | |
360 | ||
361 | let rl_cb = &self.tables.rl_cb; // could be aic too | |
362 | let q_add = if quant == 0 { 0i16 } else { i16::from((quant - 1) | 1) }; | |
363 | let q = i16::from(quant * 2); | |
364 | while idx < 64 { | |
365 | let code = br.read_cb(rl_cb)?; | |
366 | let run; | |
367 | let mut level; | |
368 | let last; | |
369 | if !code.is_escape() { | |
370 | run = code.get_run(); | |
371 | level = code.get_level(); | |
372 | last = code.is_last(); | |
373 | if br.read_bool()? { level = -level; } | |
374 | if level > 0 { | |
375 | level = (level * q) + q_add; | |
376 | } else { | |
377 | level = (level * q) - q_add; | |
378 | } | |
379 | } else { | |
380 | last = br.read_bool()?; | |
381 | run = br.read(6)? as u8; | |
382 | level = br.read_s(8)? as i16; | |
383 | if level == -128 { | |
384 | let low = br.read(5)? as i16; | |
385 | let top = br.read_s(6)? as i16; | |
386 | level = (top << 5) | low; | |
387 | } | |
388 | if level > 0 { | |
389 | level = (level * q) + q_add; | |
390 | } else { | |
391 | level = (level * q) - q_add; | |
392 | } | |
393 | if level < -2048 { level = -2048; } | |
394 | if level > 2047 { level = 2047; } | |
395 | } | |
396 | idx += run; | |
397 | validate!(idx < 64); | |
398 | let oidx = ZIGZAG[idx as usize]; | |
399 | blk[oidx] = level; | |
400 | idx += 1; | |
401 | if last { break; } | |
402 | } | |
403 | Ok(()) | |
404 | } | |
405 | } | |
406 | ||
407 | fn decode_mv_component(br: &mut BitReader, mv_cb: &Codebook<u8>) -> DecoderResult<i16> { | |
408 | let code = i16::from(br.read_cb(mv_cb)?); | |
409 | if code == 0 { return Ok(0) } | |
410 | if !br.read_bool()? { | |
411 | Ok(code) | |
412 | } else { | |
413 | Ok(-code) | |
414 | } | |
415 | } | |
416 | ||
417 | fn decode_mv(br: &mut BitReader, mv_cb: &Codebook<u8>) -> DecoderResult<MV> { | |
418 | let xval = decode_mv_component(br, mv_cb)?; | |
419 | let yval = decode_mv_component(br, mv_cb)?; | |
420 | Ok(MV::new(xval, yval)) | |
421 | } | |
422 | ||
423 | fn decode_b_info(br: &mut BitReader, is_pb: bool, is_ipb: bool, is_intra: bool) -> DecoderResult<BBlockInfo> { | |
424 | if is_pb { // as improved pb | |
425 | if is_ipb { | |
426 | let pb_mv_add = if is_intra { 1 } else { 0 }; | |
427 | if br.read_bool()?{ | |
428 | if br.read_bool()? { | |
429 | let pb_mv_count = 1 - (br.read(1)? as usize); | |
430 | let cbpb = br.read(6)? as u8; | |
431 | Ok(BBlockInfo::new(true, cbpb, pb_mv_count + pb_mv_add, pb_mv_count == 1)) | |
432 | } else { | |
433 | Ok(BBlockInfo::new(true, 0, 1 + pb_mv_add, true)) | |
434 | } | |
435 | } else { | |
436 | Ok(BBlockInfo::new(true, 0, pb_mv_add, false)) | |
437 | } | |
438 | } else { | |
439 | let mvdb = br.read_bool()?; | |
440 | let cbpb = if mvdb && br.read_bool()? { br.read(6)? as u8 } else { 0 }; | |
441 | Ok(BBlockInfo::new(true, cbpb, if mvdb { 1 } else { 0 }, false)) | |
442 | } | |
443 | } else { | |
444 | Ok(BBlockInfo::new(false, 0, 0, false)) | |
445 | } | |
446 | } | |
447 | ||
448 | impl<'a> BlockDecoder for Intel263BR<'a> { | |
449 | ||
450 | #[allow(unused_variables)] | |
451 | fn decode_pichdr(&mut self) -> DecoderResult<PicInfo> { | |
452 | let br = &mut self.br; | |
453 | let syncw = br.read(22)?; | |
454 | validate!(syncw == 0x000020); | |
455 | let tr = (br.read(8)? << 8) as u16; | |
456 | check_marker(br)?; | |
457 | let id = br.read(1)?; | |
458 | validate!(id == 0); | |
459 | br.read(1)?; // split screen indicator | |
460 | br.read(1)?; // document camera indicator | |
461 | br.read(1)?; // freeze picture release | |
462 | let mut sfmt = br.read(3)?; | |
463 | validate!((sfmt != 0b000) && (sfmt != 0b110)); | |
464 | let is_intra = !br.read_bool()?; | |
465 | let umv = br.read_bool()?; | |
466 | br.read(1)?; // syntax arithmetic coding | |
467 | let apm = br.read_bool()?; | |
468 | self.is_pb = br.read_bool()?; | |
469 | let deblock; | |
470 | let pbplus; | |
471 | if sfmt == 0b111 { | |
472 | sfmt = br.read(3)?; | |
473 | validate!((sfmt != 0b000) && (sfmt != 0b111)); | |
474 | br.read(2)?; // unknown flags | |
475 | deblock = br.read_bool()?; | |
476 | br.read(1)?; // unknown flag | |
477 | pbplus = br.read_bool()?; | |
478 | br.read(5)?; // unknown flags | |
479 | let marker = br.read(5)?; | |
480 | validate!(marker == 1); | |
481 | } else { | |
482 | deblock = false; | |
483 | pbplus = false; | |
484 | } | |
485 | self.is_ipb = pbplus; | |
486 | let w; let h; | |
487 | if sfmt == 0b110 { | |
488 | let par = br.read(4)?; | |
489 | w = ((br.read(9)? + 1) * 4) as usize; | |
490 | check_marker(br)?; | |
491 | h = ((br.read(9)? + 1) * 4) as usize; | |
492 | if par == 0b1111 { | |
493 | let pixw = br.read(8)?; | |
494 | let pixh = br.read(8)?; | |
495 | validate!((pixw != 0) && (pixh != 0)); | |
496 | } | |
497 | } else { | |
498 | let (w_, h_) = H263_SIZES[sfmt as usize]; | |
499 | w = w_; | |
500 | h = h_; | |
501 | } | |
502 | let quant = br.read(5)?; | |
503 | let cpm = br.read_bool()?; | |
504 | validate!(!cpm); | |
505 | ||
506 | let pbinfo; | |
507 | if self.is_pb { | |
508 | let trb = br.read(3)?; | |
509 | let dbquant = br.read(2)?; | |
510 | pbinfo = Some(PBInfo::new(trb as u8, dbquant as u8, pbplus)); | |
511 | } else { | |
512 | pbinfo = None; | |
513 | } | |
514 | while br.read_bool()? { // skip PEI | |
515 | br.read(8)?; | |
516 | } | |
517 | //println!("frame {}x{} intra: {} q {} pb {} apm {} umv {} @{}", w, h, is_intra, quant, self.is_pb, apm, umv, br.tell()); | |
518 | self.gob_no = 0; | |
519 | self.mb_w = (w + 15) >> 4; | |
520 | ||
521 | let ftype = if is_intra { Type::I } else { Type::P }; | |
522 | let plusinfo = if deblock { Some(PlusInfo::new(false, deblock, false, false)) } else { None }; | |
523 | let mvmode = if umv { MVMode::UMV } else { MVMode::Old }; | |
524 | let picinfo = PicInfo::new(w, h, ftype, mvmode, umv, apm, quant as u8, tr, pbinfo, plusinfo); | |
525 | Ok(picinfo) | |
526 | } | |
527 | ||
528 | #[allow(unused_variables)] | |
529 | fn decode_slice_header(&mut self, info: &PicInfo) -> DecoderResult<SliceInfo> { | |
530 | let br = &mut self.br; | |
531 | let gbsc = br.read(17)?; | |
532 | validate!(gbsc == 1); | |
533 | let gn = br.read(5)?; | |
534 | let gfid = br.read(2)?; | |
535 | let gquant = br.read(5)?; | |
536 | //println!("GOB gn {:X} id {} q {}", gn, gfid, gquant); | |
537 | let ret = SliceInfo::new_gob(0, self.gob_no, gquant as u8); | |
538 | self.gob_no += 1; | |
539 | Ok(ret) | |
540 | } | |
541 | ||
542 | #[allow(unused_variables)] | |
543 | fn decode_block_header(&mut self, info: &PicInfo, slice: &SliceInfo, sstate: &SliceState) -> DecoderResult<BlockInfo> { | |
544 | let br = &mut self.br; | |
545 | let mut q = slice.get_quant(); | |
546 | match info.get_mode() { | |
547 | Type::I => { | |
548 | let mut cbpc = br.read_cb(&self.tables.intra_mcbpc_cb)?; | |
549 | while cbpc == 8 { cbpc = br.read_cb(&self.tables.intra_mcbpc_cb)?; } | |
550 | let cbpy = br.read_cb(&self.tables.cbpy_cb)?; | |
551 | let cbp = (cbpy << 2) | (cbpc & 3); | |
552 | let dquant = (cbpc & 4) != 0; | |
553 | if dquant { | |
554 | let idx = br.read(2)? as usize; | |
555 | q = (i16::from(q) + i16::from(H263_DQUANT_TAB[idx])) as u8; | |
556 | } | |
557 | Ok(BlockInfo::new(Type::I, cbp, q)) | |
558 | }, | |
559 | Type::P => { | |
560 | if br.read_bool()? { return Ok(BlockInfo::new(Type::Skip, 0, info.get_quant())); } | |
561 | let mut cbpc = br.read_cb(&self.tables.inter_mcbpc_cb)?; | |
562 | while cbpc == 20 { cbpc = br.read_cb(&self.tables.inter_mcbpc_cb)?; } | |
563 | let is_intra = (cbpc & 0x04) != 0; | |
564 | let dquant = (cbpc & 0x08) != 0; | |
565 | let is_4x4 = (cbpc & 0x10) != 0; | |
566 | if is_intra { | |
567 | let mut mvec: Vec<MV> = Vec::new(); | |
568 | let bbinfo = decode_b_info(br, self.is_pb, self.is_ipb, true)?; | |
569 | let cbpy = br.read_cb(&self.tables.cbpy_cb)?; | |
570 | let cbp = (cbpy << 2) | (cbpc & 3); | |
571 | if dquant { | |
572 | let idx = br.read(2)? as usize; | |
573 | q = (i16::from(q) + i16::from(H263_DQUANT_TAB[idx])) as u8; | |
574 | } | |
575 | let mut binfo = BlockInfo::new(Type::I, cbp, q); | |
576 | binfo.set_bpart(bbinfo); | |
577 | if self.is_pb { | |
578 | for _ in 0..bbinfo.get_num_mv() { | |
579 | mvec.push(decode_mv(br, &self.tables.mv_cb)?); | |
580 | } | |
581 | binfo.set_b_mv(mvec.as_slice()); | |
582 | } | |
583 | return Ok(binfo); | |
584 | } | |
585 | ||
586 | let bbinfo = decode_b_info(br, self.is_pb, self.is_ipb, false)?; | |
587 | let mut cbpy = br.read_cb(&self.tables.cbpy_cb)?; | |
588 | // if /* !aiv && */(cbpc & 3) != 3 { | |
589 | cbpy ^= 0xF; | |
590 | // } | |
591 | let cbp = (cbpy << 2) | (cbpc & 3); | |
592 | if dquant { | |
593 | let idx = br.read(2)? as usize; | |
594 | q = (i16::from(q) + i16::from(H263_DQUANT_TAB[idx])) as u8; | |
595 | } | |
596 | let mut binfo = BlockInfo::new(Type::P, cbp, q); | |
597 | binfo.set_bpart(bbinfo); | |
598 | if !is_4x4 { | |
599 | let mvec: [MV; 1] = [decode_mv(br, &self.tables.mv_cb)?]; | |
600 | binfo.set_mv(&mvec); | |
601 | } else { | |
602 | let mvec: [MV; 4] = [ | |
603 | decode_mv(br, &self.tables.mv_cb)?, | |
604 | decode_mv(br, &self.tables.mv_cb)?, | |
605 | decode_mv(br, &self.tables.mv_cb)?, | |
606 | decode_mv(br, &self.tables.mv_cb)? | |
607 | ]; | |
608 | binfo.set_mv(&mvec); | |
609 | } | |
610 | if self.is_pb { | |
611 | let mut mvec: Vec<MV> = Vec::with_capacity(bbinfo.get_num_mv()); | |
612 | for _ in 0..bbinfo.get_num_mv() { | |
613 | let mv = decode_mv(br, &self.tables.mv_cb)?; | |
614 | mvec.push(mv); | |
615 | } | |
616 | binfo.set_b_mv(mvec.as_slice()); | |
617 | } | |
618 | Ok(binfo) | |
619 | }, | |
620 | _ => { Err(DecoderError::InvalidData) }, | |
621 | } | |
622 | } | |
623 | ||
624 | #[allow(unused_variables)] | |
625 | fn decode_block_intra(&mut self, info: &BlockInfo, sstate: &SliceState, quant: u8, no: usize, coded: bool, blk: &mut [i16; 64]) -> DecoderResult<()> { | |
626 | self.decode_block(quant, true, coded, blk) | |
627 | } | |
628 | ||
629 | #[allow(unused_variables)] | |
630 | fn decode_block_inter(&mut self, info: &BlockInfo, sstate: &SliceState, quant: u8, no: usize, coded: bool, blk: &mut [i16; 64]) -> DecoderResult<()> { | |
631 | self.decode_block(quant, false, coded, blk) | |
632 | } | |
633 | ||
634 | fn is_slice_end(&mut self) -> bool { self.br.peek(16) == 0 } | |
635 | } | |
636 | ||
637 | impl Intel263Decoder { | |
638 | fn new() -> Self { | |
639 | let mut coderead = H263ShortCodeReader::new(H263_INTRA_MCBPC); | |
640 | let intra_mcbpc_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); | |
641 | let mut coderead = H263ShortCodeReader::new(H263_INTER_MCBPC); | |
642 | let inter_mcbpc_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); | |
643 | let mut coderead = H263ShortCodeReader::new(H263_CBPY); | |
644 | let cbpy_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); | |
645 | let mut coderead = H263RLCodeReader::new(H263_RL_CODES); | |
646 | let rl_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); | |
647 | let mut coderead = H263RLCodeReader::new(H263_RL_CODES_AIC); | |
648 | let aic_rl_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); | |
649 | let mut coderead = H263ShortCodeReader::new(H263_MV); | |
650 | let mv_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); | |
651 | let tables = Tables { | |
652 | intra_mcbpc_cb, | |
653 | inter_mcbpc_cb, | |
654 | cbpy_cb, | |
655 | rl_cb, | |
656 | aic_rl_cb, | |
657 | mv_cb, | |
658 | }; | |
659 | ||
660 | Intel263Decoder{ | |
661 | info: NACodecInfo::new_dummy(), | |
662 | dec: H263BaseDecoder::new(true), | |
663 | tables, | |
664 | bdsp: I263BlockDSP::default(), | |
665 | lastframe: None, | |
666 | lastpts: None, | |
667 | } | |
668 | } | |
669 | } | |
670 | ||
671 | impl NADecoder for Intel263Decoder { | |
672 | fn init(&mut self, _supp: &mut NADecoderSupport, info: NACodecInfoRef) -> DecoderResult<()> { | |
673 | if let NACodecTypeInfo::Video(vinfo) = info.get_properties() { | |
674 | let w = vinfo.get_width(); | |
675 | let h = vinfo.get_height(); | |
676 | let fmt = formats::YUV420_FORMAT; | |
677 | let myinfo = NACodecTypeInfo::Video(NAVideoInfo::new(w, h, false, fmt)); | |
678 | self.info = NACodecInfo::new_ref(info.get_name(), myinfo, info.get_extradata()).into_ref(); | |
679 | Ok(()) | |
680 | } else { | |
681 | Err(DecoderError::InvalidData) | |
682 | } | |
683 | } | |
684 | fn decode(&mut self, _supp: &mut NADecoderSupport, pkt: &NAPacket) -> DecoderResult<NAFrameRef> { | |
685 | let src = pkt.get_buffer(); | |
686 | ||
687 | if src.len() == 8 { | |
688 | let buftype; | |
689 | let ftype; | |
690 | if self.lastframe.is_none() { | |
691 | buftype = NABufferType::None; | |
692 | ftype = FrameType::Skip; | |
693 | } else { | |
694 | let mut buf = None; | |
695 | std::mem::swap(&mut self.lastframe, &mut buf); | |
696 | buftype = buf.unwrap(); | |
697 | ftype = FrameType::B; | |
698 | } | |
699 | let mut frm = NAFrame::new_from_pkt(pkt, self.info.clone(), buftype); | |
700 | frm.set_keyframe(false); | |
701 | frm.set_frame_type(ftype); | |
702 | if self.lastpts.is_some() { | |
703 | frm.set_pts(self.lastpts); | |
704 | self.lastpts = None; | |
705 | } | |
706 | return Ok(frm.into_ref()); | |
707 | } | |
708 | let mut ibr = Intel263BR::new(&src, &self.tables); | |
709 | ||
710 | let bufinfo = self.dec.parse_frame(&mut ibr, &self.bdsp)?; | |
711 | ||
712 | let mut cur_pts = pkt.get_pts(); | |
713 | if !self.dec.is_intra() { | |
714 | let bret = self.dec.get_bframe(&self.bdsp); | |
715 | if let Ok(b_buf) = bret { | |
716 | self.lastframe = Some(b_buf); | |
717 | self.lastpts = pkt.get_pts(); | |
718 | if let Some(pts) = pkt.get_pts() { | |
719 | cur_pts = Some(pts + 1); | |
720 | } | |
721 | } | |
722 | } | |
723 | ||
724 | let mut frm = NAFrame::new_from_pkt(pkt, self.info.clone(), bufinfo); | |
725 | frm.set_keyframe(self.dec.is_intra()); | |
726 | frm.set_frame_type(if self.dec.is_intra() { FrameType::I } else { FrameType::P }); | |
727 | frm.set_pts(cur_pts); | |
728 | Ok(frm.into_ref()) | |
729 | } | |
730 | fn flush(&mut self) { | |
731 | self.dec.flush(); | |
732 | } | |
733 | } | |
734 | ||
735 | ||
736 | pub fn get_decoder() -> Box<dyn NADecoder + Send> { | |
737 | Box::new(Intel263Decoder::new()) | |
738 | } | |
739 | ||
740 | #[cfg(test)] | |
741 | mod test { | |
742 | use nihav_core::codecs::RegisteredDecoders; | |
743 | use nihav_core::demuxers::RegisteredDemuxers; | |
744 | use nihav_codec_support::test::dec_video::*; | |
745 | use crate::indeo_register_all_codecs; | |
746 | use nihav_commonfmt::generic_register_all_demuxers; | |
747 | #[test] | |
748 | fn test_intel263() { | |
749 | let mut dmx_reg = RegisteredDemuxers::new(); | |
750 | generic_register_all_demuxers(&mut dmx_reg); | |
751 | let mut dec_reg = RegisteredDecoders::new(); | |
752 | indeo_register_all_codecs(&mut dec_reg); | |
753 | ||
754 | test_decoding("avi", "intel263", "assets/Indeo/neal73_saber.avi", Some(16), | |
755 | &dmx_reg, &dec_reg, ExpectedTestResult::MD5Frames(vec![ | |
756 | [0x698c4f70, 0xf727bfc1, 0x96e687e9, 0xc9e37073], | |
757 | [0xd41d8cd9, 0x8f00b204, 0xe9800998, 0xecf8427e], | |
758 | [0x95dfe457, 0xaaeeaca9, 0x9764c111, 0xdf055b1f], | |
759 | [0xac1d708c, 0x8e34aa47, 0x240b8f0e, 0x797b052b], | |
760 | [0x965fe621, 0xebb049da, 0x18345724, 0x748ea32f], | |
761 | [0x126c7492, 0x54d7457f, 0x9968a723, 0x89629378], | |
762 | [0x8c690125, 0x3de8da89, 0x6030b702, 0xbd3f09ab], | |
763 | [0xa9d3f7c7, 0xdfa1795c, 0x7ed34e86, 0x58b7cc26], | |
764 | [0xe500e50e, 0x2312197d, 0xb8e93f41, 0xe6890cd8], | |
765 | [0x2e8d8f15, 0xaf1c84fe, 0x05fec093, 0x3c383abb], | |
766 | [0x6a1def4b, 0xc3549acc, 0x9ed127be, 0x2872f751], | |
767 | [0x36599508, 0xe169caf9, 0xcdf6af6b, 0x29d167b8], | |
768 | [0xfe98869d, 0x2b16b94b, 0x97caaf72, 0xbf7cc0c1], | |
769 | [0x9fbfaf0a, 0xfa4ce8fc, 0xdc038ab8, 0x649c1eaa], | |
770 | [0x141749be, 0xfba7acd4, 0xd0372e02, 0x6b191bc5], | |
771 | [0x99252b73, 0x2ce009d9, 0xf6753c1d, 0x31892a08], | |
772 | [0xefe81436, 0x4ab365db, 0x57a0b058, 0x26a6ca02]])); | |
773 | } | |
774 | } |