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Commit | Line | Data |
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5b24175d | 1 | use nihav_core::codecs::*; |
b4d5b851 KS |
2 | use nihav_codec_support::codecs::blockdsp; |
3 | use nihav_codec_support::codecs::blockdsp::*; | |
5b24175d | 4 | |
93bbc2b0 KS |
5 | pub const VP_YUVA420_FORMAT: NAPixelFormaton = NAPixelFormaton{ |
6 | model: ColorModel::YUV(YUVSubmodel::YUVJ), | |
7 | components: 4, | |
8 | comp_info: [ | |
9 | Some(NAPixelChromaton{ h_ss: 0, v_ss: 0, packed: false, depth: 8, shift: 0, comp_offs: 0, next_elem: 1}), | |
10 | Some(NAPixelChromaton{ h_ss: 1, v_ss: 1, packed: false, depth: 8, shift: 0, comp_offs: 1, next_elem: 1}), | |
11 | Some(NAPixelChromaton{ h_ss: 1, v_ss: 1, packed: false, depth: 8, shift: 0, comp_offs: 2, next_elem: 1}), | |
12 | Some(NAPixelChromaton{ h_ss: 0, v_ss: 0, packed: false, depth: 8, shift: 0, comp_offs: 3, next_elem: 1}), | |
13 | None ], | |
14 | elem_size: 0, | |
15 | be: false, | |
16 | alpha: true, | |
17 | palette: false | |
18 | }; | |
19 | ||
5b24175d KS |
20 | #[derive(Clone,Copy,Debug,PartialEq)] |
21 | #[allow(dead_code)] | |
22 | pub enum VPMBType { | |
23 | Intra, | |
24 | InterNoMV, | |
25 | InterMV, | |
26 | InterNearest, | |
27 | InterNear, | |
28 | InterFourMV, | |
29 | GoldenNoMV, | |
30 | GoldenMV, | |
31 | GoldenNearest, | |
32 | GoldenNear, | |
33 | } | |
34 | ||
3584b223 KS |
35 | pub const VP_REF_INTER: u8 = 1; |
36 | pub const VP_REF_GOLDEN: u8 = 2; | |
37 | ||
5b24175d KS |
38 | #[allow(dead_code)] |
39 | impl VPMBType { | |
40 | pub fn is_intra(self) -> bool { self == VPMBType::Intra } | |
41 | pub fn get_ref_id(self) -> u8 { | |
42 | match self { | |
43 | VPMBType::Intra => 0, | |
44 | VPMBType::InterNoMV | | |
45 | VPMBType::InterMV | | |
46 | VPMBType::InterNearest | | |
47 | VPMBType::InterNear | | |
3584b223 KS |
48 | VPMBType::InterFourMV => VP_REF_INTER, |
49 | _ => VP_REF_GOLDEN, | |
5b24175d KS |
50 | } |
51 | } | |
52 | } | |
53 | ||
54 | impl Default for VPMBType { | |
55 | fn default() -> Self { VPMBType::Intra } | |
56 | } | |
57 | ||
58 | #[derive(Default)] | |
59 | pub struct VPShuffler { | |
60 | lastframe: Option<NAVideoBufferRef<u8>>, | |
61 | goldframe: Option<NAVideoBufferRef<u8>>, | |
62 | } | |
63 | ||
64 | impl VPShuffler { | |
65 | pub fn new() -> Self { VPShuffler { lastframe: None, goldframe: None } } | |
66 | pub fn clear(&mut self) { self.lastframe = None; self.goldframe = None; } | |
67 | pub fn add_frame(&mut self, buf: NAVideoBufferRef<u8>) { | |
68 | self.lastframe = Some(buf); | |
69 | } | |
70 | pub fn add_golden_frame(&mut self, buf: NAVideoBufferRef<u8>) { | |
71 | self.goldframe = Some(buf); | |
72 | } | |
73 | pub fn get_last(&mut self) -> Option<NAVideoBufferRef<u8>> { | |
74 | if let Some(ref frm) = self.lastframe { | |
75 | Some(frm.clone()) | |
76 | } else { | |
77 | None | |
78 | } | |
79 | } | |
80 | pub fn get_golden(&mut self) -> Option<NAVideoBufferRef<u8>> { | |
81 | if let Some(ref frm) = self.goldframe { | |
82 | Some(frm.clone()) | |
83 | } else { | |
84 | None | |
85 | } | |
86 | } | |
6e24ec0b KS |
87 | pub fn has_refs(&self) -> bool { |
88 | self.lastframe.is_some() | |
89 | } | |
5b24175d KS |
90 | } |
91 | ||
3f67638d KS |
92 | pub const VP56_COEF_BASE: [i16; 6] = [ 5, 7, 11, 19, 35, 67 ]; |
93 | pub const VP56_COEF_ADD_PROBS: [[u8; 12]; 6] = [ | |
94 | [ 159, 128, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ], | |
95 | [ 165, 145, 128, 0, 0, 0, 0, 0, 0, 0, 0, 0 ], | |
96 | [ 173, 148, 140, 128, 0, 0, 0, 0, 0, 0, 0, 0 ], | |
97 | [ 176, 155, 140, 135, 128, 0, 0, 0, 0, 0, 0, 0 ], | |
98 | [ 180, 157, 141, 134, 130, 128, 0, 0, 0, 0, 0, 0 ], | |
99 | [ 254, 254, 243, 230, 196, 177, 153, 140, 133, 130, 129, 128 ], | |
100 | ]; | |
101 | ||
3584b223 KS |
102 | #[allow(dead_code)] |
103 | pub struct BoolCoder<'a> { | |
104 | pub src: &'a [u8], | |
105 | pos: usize, | |
106 | value: u32, | |
107 | range: u32, | |
108 | bits: i32, | |
109 | } | |
110 | ||
111 | #[allow(dead_code)] | |
112 | impl<'a> BoolCoder<'a> { | |
113 | pub fn new(src: &'a [u8]) -> DecoderResult<Self> { | |
114 | if src.len() < 3 { return Err(DecoderError::ShortData); } | |
115 | let value = ((src[0] as u32) << 24) | ((src[1] as u32) << 16) | ((src[2] as u32) << 8) | (src[3] as u32); | |
116 | Ok(Self { src, pos: 4, value, range: 255, bits: 8 }) | |
117 | } | |
118 | pub fn read_bool(&mut self) -> bool { | |
119 | self.read_prob(128) | |
120 | } | |
121 | pub fn read_prob(&mut self, prob: u8) -> bool { | |
122 | self.renorm(); | |
123 | let split = 1 + (((self.range - 1) * (prob as u32)) >> 8); | |
124 | let bit; | |
125 | if self.value < (split << 24) { | |
126 | self.range = split; | |
127 | bit = false; | |
128 | } else { | |
129 | self.range -= split; | |
130 | self.value -= split << 24; | |
131 | bit = true; | |
132 | } | |
133 | bit | |
134 | } | |
135 | pub fn read_bits(&mut self, bits: u8) -> u32 { | |
136 | let mut val = 0u32; | |
137 | for _ in 0..bits { | |
138 | val = (val << 1) | (self.read_prob(128) as u32); | |
139 | } | |
140 | val | |
141 | } | |
587a6d78 KS |
142 | pub fn read_byte(&mut self) -> u8 { |
143 | let mut val = 0u8; | |
144 | for _ in 0..8 { | |
145 | val = (val << 1) | (self.read_prob(128) as u8); | |
146 | } | |
147 | val | |
148 | } | |
149 | pub fn read_sbits(&mut self, bits: u8) -> i32 { | |
150 | let mut val = if self.read_prob(128) { -1i32 } else { 0i32 }; | |
151 | for _ in 1..bits { | |
152 | val = (val << 1) | (self.read_prob(128) as i32); | |
153 | } | |
154 | val | |
155 | } | |
3584b223 KS |
156 | pub fn read_probability(&mut self) -> u8 { |
157 | let val = self.read_bits(7) as u8; | |
158 | if val == 0 { | |
159 | 1 | |
160 | } else { | |
161 | val << 1 | |
162 | } | |
163 | } | |
164 | fn renorm(&mut self) { | |
165 | let shift = self.range.leading_zeros() & 7; | |
166 | self.range <<= shift; | |
167 | self.value <<= shift; | |
168 | self.bits -= shift as i32; | |
169 | if (self.bits <= 0) && (self.pos < self.src.len()) { | |
170 | self.value |= (self.src[self.pos] as u32) << (-self.bits as u8); | |
171 | self.pos += 1; | |
172 | self.bits += 8; | |
173 | } | |
174 | /* while self.range < 0x80 { | |
175 | self.range <<= 1; | |
176 | self.value <<= 1; | |
177 | self.bits -= 1; | |
178 | if (self.bits <= 0) && (self.pos < self.src.len()) { | |
179 | self.value |= self.src[self.pos] as u32; | |
180 | self.pos += 1; | |
181 | self.bits = 8; | |
182 | } | |
183 | }*/ | |
184 | } | |
185 | pub fn skip_bytes(&mut self, nbytes: usize) { | |
186 | for _ in 0..nbytes { | |
187 | self.value <<= 8; | |
188 | if self.pos < self.src.len() { | |
189 | self.value |= self.src[self.pos] as u32; | |
190 | self.pos += 1; | |
191 | } | |
192 | } | |
193 | } | |
194 | } | |
195 | ||
196 | #[allow(dead_code)] | |
197 | pub fn rescale_prob(prob: u8, weights: &[i16; 2], maxval: i32) -> u8 { | |
198 | ((((prob as i32) * (weights[0] as i32) + 128) >> 8) + (weights[1] as i32)).min(maxval).max(1) as u8 | |
199 | } | |
200 | ||
3584b223 KS |
201 | macro_rules! vp_tree { |
202 | ($bc: expr, $prob: expr, $node1: expr, $node2: expr) => { | |
203 | if !$bc.read_prob($prob) { | |
204 | $node1 | |
205 | } else { | |
206 | $node2 | |
207 | } | |
208 | }; | |
209 | ($leaf: expr) => { $leaf } | |
210 | } | |
211 | ||
5b24175d KS |
212 | const C1S7: i32 = 64277; |
213 | const C2S6: i32 = 60547; | |
214 | const C3S5: i32 = 54491; | |
215 | const C4S4: i32 = 46341; | |
216 | const C5S3: i32 = 36410; | |
217 | const C6S2: i32 = 25080; | |
218 | const C7S1: i32 = 12785; | |
219 | ||
220 | fn mul16(a: i32, b: i32) -> i32 { | |
221 | (a * b) >> 16 | |
222 | } | |
223 | ||
224 | macro_rules! idct_step { | |
225 | ($s0:expr, $s1:expr, $s2:expr, $s3:expr, $s4:expr, $s5:expr, $s6:expr, $s7:expr, | |
226 | $d0:expr, $d1:expr, $d2:expr, $d3:expr, $d4:expr, $d5:expr, $d6:expr, $d7:expr, | |
227 | $bias:expr, $shift:expr, $otype:ty) => { | |
228 | let t_a = mul16(C1S7, i32::from($s1)) + mul16(C7S1, i32::from($s7)); | |
229 | let t_b = mul16(C7S1, i32::from($s1)) - mul16(C1S7, i32::from($s7)); | |
230 | let t_c = mul16(C3S5, i32::from($s3)) + mul16(C5S3, i32::from($s5)); | |
231 | let t_d = mul16(C3S5, i32::from($s5)) - mul16(C5S3, i32::from($s3)); | |
232 | let t_a1 = mul16(C4S4, t_a - t_c); | |
233 | let t_b1 = mul16(C4S4, t_b - t_d); | |
234 | let t_c = t_a + t_c; | |
235 | let t_d = t_b + t_d; | |
236 | let t_e = mul16(C4S4, i32::from($s0 + $s4)) + $bias; | |
237 | let t_f = mul16(C4S4, i32::from($s0 - $s4)) + $bias; | |
238 | let t_g = mul16(C2S6, i32::from($s2)) + mul16(C6S2, i32::from($s6)); | |
239 | let t_h = mul16(C6S2, i32::from($s2)) - mul16(C2S6, i32::from($s6)); | |
240 | let t_e1 = t_e - t_g; | |
241 | let t_g = t_e + t_g; | |
242 | let t_a = t_f + t_a1; | |
243 | let t_f = t_f - t_a1; | |
244 | let t_b = t_b1 - t_h; | |
245 | let t_h = t_b1 + t_h; | |
246 | ||
247 | $d0 = ((t_g + t_c) >> $shift) as $otype; | |
248 | $d7 = ((t_g - t_c) >> $shift) as $otype; | |
249 | $d1 = ((t_a + t_h) >> $shift) as $otype; | |
250 | $d2 = ((t_a - t_h) >> $shift) as $otype; | |
251 | $d3 = ((t_e1 + t_d) >> $shift) as $otype; | |
252 | $d4 = ((t_e1 - t_d) >> $shift) as $otype; | |
253 | $d5 = ((t_f + t_b) >> $shift) as $otype; | |
254 | $d6 = ((t_f - t_b) >> $shift) as $otype; | |
255 | } | |
256 | } | |
257 | ||
258 | pub fn vp_idct(coeffs: &mut [i16; 64]) { | |
259 | let mut tmp = [0i32; 64]; | |
260 | for (src, dst) in coeffs.chunks(8).zip(tmp.chunks_mut(8)) { | |
261 | idct_step!(src[0], src[1], src[2], src[3], src[4], src[5], src[6], src[7], | |
262 | dst[0], dst[1], dst[2], dst[3], dst[4], dst[5], dst[6], dst[7], 0, 0, i32); | |
263 | } | |
264 | let src = &tmp; | |
265 | let dst = coeffs; | |
266 | for i in 0..8 { | |
267 | idct_step!(src[0 * 8 + i], src[1 * 8 + i], src[2 * 8 + i], src[3 * 8 + i], | |
268 | src[4 * 8 + i], src[5 * 8 + i], src[6 * 8 + i], src[7 * 8 + i], | |
269 | dst[0 * 8 + i], dst[1 * 8 + i], dst[2 * 8 + i], dst[3 * 8 + i], | |
270 | dst[4 * 8 + i], dst[5 * 8 + i], dst[6 * 8 + i], dst[7 * 8 + i], 8, 4, i16); | |
271 | } | |
272 | } | |
273 | ||
274 | pub fn vp_idct_dc(coeffs: &mut [i16; 64]) { | |
275 | let dc = ((mul16(C4S4, mul16(C4S4, i32::from(coeffs[0]))) + 8) >> 4) as i16; | |
276 | for i in 0..64 { | |
277 | coeffs[i] = dc; | |
278 | } | |
279 | } | |
280 | ||
281 | pub fn unquant(coeffs: &mut [i16; 64], qmat: &[i16; 64]) { | |
282 | for i in 1..64 { | |
283 | coeffs[i] = coeffs[i].wrapping_mul(qmat[i]); | |
284 | } | |
285 | } | |
286 | ||
287 | pub fn vp_put_block(coeffs: &mut [i16; 64], bx: usize, by: usize, plane: usize, frm: &mut NASimpleVideoFrame<u8>) { | |
288 | vp_idct(coeffs); | |
289 | let mut off = frm.offset[plane] + bx * 8 + by * 8 * frm.stride[plane]; | |
290 | for y in 0..8 { | |
291 | for x in 0..8 { | |
292 | frm.data[off + x] = (coeffs[x + y * 8] + 128).min(255).max(0) as u8; | |
293 | } | |
294 | off += frm.stride[plane]; | |
295 | } | |
296 | } | |
297 | ||
3584b223 KS |
298 | pub fn vp_put_block_ilace(coeffs: &mut [i16; 64], bx: usize, by: usize, plane: usize, frm: &mut NASimpleVideoFrame<u8>) { |
299 | vp_idct(coeffs); | |
300 | let mut off = frm.offset[plane] + bx * 8 + ((by & !1) * 8 + (by & 1)) * frm.stride[plane]; | |
301 | for y in 0..8 { | |
302 | for x in 0..8 { | |
303 | frm.data[off + x] = (coeffs[x + y * 8] + 128).min(255).max(0) as u8; | |
304 | } | |
305 | off += frm.stride[plane] * 2; | |
306 | } | |
307 | } | |
308 | ||
5b24175d KS |
309 | pub fn vp_put_block_dc(coeffs: &mut [i16; 64], bx: usize, by: usize, plane: usize, frm: &mut NASimpleVideoFrame<u8>) { |
310 | vp_idct_dc(coeffs); | |
311 | let dc = (coeffs[0] + 128).min(255).max(0) as u8; | |
312 | let mut off = frm.offset[plane] + bx * 8 + by * 8 * frm.stride[plane]; | |
313 | for _ in 0..8 { | |
314 | for x in 0..8 { | |
315 | frm.data[off + x] = dc; | |
316 | } | |
317 | off += frm.stride[plane]; | |
318 | } | |
319 | } | |
320 | ||
321 | pub fn vp_add_block(coeffs: &mut [i16; 64], bx: usize, by: usize, plane: usize, frm: &mut NASimpleVideoFrame<u8>) { | |
322 | vp_idct(coeffs); | |
323 | let mut off = frm.offset[plane] + bx * 8 + by * 8 * frm.stride[plane]; | |
324 | for y in 0..8 { | |
325 | for x in 0..8 { | |
326 | frm.data[off + x] = (coeffs[x + y * 8] + (frm.data[off + x] as i16)).min(255).max(0) as u8; | |
327 | } | |
328 | off += frm.stride[plane]; | |
329 | } | |
330 | } | |
331 | ||
3584b223 KS |
332 | pub fn vp_add_block_ilace(coeffs: &mut [i16; 64], bx: usize, by: usize, plane: usize, frm: &mut NASimpleVideoFrame<u8>) { |
333 | vp_idct(coeffs); | |
334 | let mut off = frm.offset[plane] + bx * 8 + ((by & !1) * 8 + (by & 1)) * frm.stride[plane]; | |
335 | for y in 0..8 { | |
336 | for x in 0..8 { | |
337 | frm.data[off + x] = (coeffs[x + y * 8] + (frm.data[off + x] as i16)).min(255).max(0) as u8; | |
338 | } | |
339 | off += frm.stride[plane] * 2; | |
340 | } | |
341 | } | |
342 | ||
5b24175d KS |
343 | pub fn vp_add_block_dc(coeffs: &mut [i16; 64], bx: usize, by: usize, plane: usize, frm: &mut NASimpleVideoFrame<u8>) { |
344 | vp_idct_dc(coeffs); | |
345 | let dc = coeffs[0]; | |
346 | let mut off = frm.offset[plane] + bx * 8 + by * 8 * frm.stride[plane]; | |
347 | for _ in 0..8 { | |
348 | for x in 0..8 { | |
349 | frm.data[off + x] = (dc + (frm.data[off + x] as i16)).min(255).max(0) as u8; | |
350 | } | |
351 | off += frm.stride[plane]; | |
352 | } | |
353 | } | |
8d8ddfe1 KS |
354 | |
355 | pub fn vp31_loop_filter(data: &mut [u8], mut off: usize, step: usize, stride: usize, | |
356 | len: usize, loop_str: i16) { | |
357 | for _ in 0..len { | |
358 | let a = data[off - step * 2] as i16; | |
359 | let b = data[off - step] as i16; | |
360 | let c = data[off] as i16; | |
361 | let d = data[off + step] as i16; | |
362 | let mut diff = ((a - d) + 3 * (c - b) + 4) >> 3; | |
363 | if diff.abs() >= 2 * loop_str { | |
364 | diff = 0; | |
365 | } else if diff.abs() >= loop_str { | |
366 | if diff < 0 { | |
367 | diff = -diff - 2 * loop_str; | |
368 | } else { | |
369 | diff = -diff + 2 * loop_str; | |
370 | } | |
371 | } | |
372 | if diff != 0 { | |
373 | data[off - step] = (b + diff).max(0).min(255) as u8; | |
374 | data[off] = (c - diff).max(0).min(255) as u8; | |
375 | } | |
376 | ||
377 | off += stride; | |
378 | } | |
379 | } | |
380 | ||
8e4b2f44 KS |
381 | pub fn vp_copy_block(dst: &mut NASimpleVideoFrame<u8>, src: NAVideoBufferRef<u8>, comp: usize, |
382 | dx: usize, dy: usize, mv_x: i16, mv_y: i16, | |
383 | preborder: usize, postborder: usize, loop_str: i16, | |
384 | mode: usize, interp: &[BlkInterpFunc], mut mc_buf: NAVideoBufferRef<u8>) | |
385 | { | |
386 | let sx = (dx as isize) + (mv_x as isize); | |
387 | let sy = (dy as isize) + (mv_y as isize); | |
388 | if ((sx | sy) & 7) == 0 { | |
389 | copy_block(dst, src, comp, dx, dy, mv_x, mv_y, 8, 8, preborder, postborder, mode, interp); | |
390 | return; | |
391 | } | |
392 | let pre = preborder.max(2); | |
393 | let post = postborder.max(1); | |
394 | let bsize = 8 + pre + post; | |
395 | let src_x = sx - (pre as isize); | |
396 | let src_y = sy - (pre as isize); | |
397 | { | |
900c9c57 | 398 | let tmp_buf = NASimpleVideoFrame::from_video_buf(&mut mc_buf).unwrap(); |
86081fed | 399 | edge_emu(src.as_ref(), src_x, src_y, bsize, bsize, &mut tmp_buf.data[tmp_buf.offset[comp]..], tmp_buf.stride[comp], comp, 0); |
900c9c57 KS |
400 | // copy_block(&mut tmp_buf, src, comp, 0, 0, src_x as i16, src_y as i16, |
401 | // bsize, bsize, 0, 0, 0, interp); | |
402 | if (sx & 7) != 0 { | |
8e4b2f44 | 403 | let foff = (8 - (sx & 7)) as usize; |
900c9c57 | 404 | let off = pre + foff + tmp_buf.offset[comp]; |
8e4b2f44 KS |
405 | vp31_loop_filter(tmp_buf.data, off, 1, tmp_buf.stride[comp], bsize, loop_str); |
406 | } | |
900c9c57 | 407 | if (sy & 7) != 0 { |
547a8074 | 408 | let foff = (8 - (sy & 7)) as usize; |
900c9c57 | 409 | let off = (pre + foff) * tmp_buf.stride[comp] + tmp_buf.offset[comp]; |
547a8074 KS |
410 | vp31_loop_filter(tmp_buf.data, off, tmp_buf.stride[comp], 1, bsize, loop_str); |
411 | } | |
8e4b2f44 KS |
412 | } |
413 | let dxoff = (pre as i16) - (dx as i16); | |
414 | let dyoff = (pre as i16) - (dy as i16); | |
547a8074 | 415 | copy_block(dst, mc_buf, comp, dx, dy, dxoff, dyoff, 8, 8, preborder, postborder, mode, interp); |
8e4b2f44 | 416 | } |
3584b223 KS |
417 | |
418 | fn vp3_interp00(dst: &mut [u8], dstride: usize, src: &[u8], sstride: usize, bw: usize, bh: usize) | |
419 | { | |
420 | let mut didx = 0; | |
421 | let mut sidx = 0; | |
422 | for _ in 0..bh { | |
423 | for x in 0..bw { dst[didx + x] = src[sidx + x]; } | |
424 | didx += dstride; | |
425 | sidx += sstride; | |
426 | } | |
427 | } | |
428 | ||
429 | fn vp3_interp01(dst: &mut [u8], dstride: usize, src: &[u8], sstride: usize, bw: usize, bh: usize) | |
430 | { | |
431 | let mut didx = 0; | |
432 | let mut sidx = 0; | |
433 | for _ in 0..bh { | |
434 | for x in 0..bw { dst[didx + x] = (((src[sidx + x] as u16) + (src[sidx + x + 1] as u16)) >> 1) as u8; } | |
435 | didx += dstride; | |
436 | sidx += sstride; | |
437 | } | |
438 | } | |
439 | ||
440 | fn vp3_interp10(dst: &mut [u8], dstride: usize, src: &[u8], sstride: usize, bw: usize, bh: usize) | |
441 | { | |
442 | let mut didx = 0; | |
443 | let mut sidx = 0; | |
444 | for _ in 0..bh { | |
445 | for x in 0..bw { dst[didx + x] = (((src[sidx + x] as u16) + (src[sidx + x + sstride] as u16)) >> 1) as u8; } | |
446 | didx += dstride; | |
447 | sidx += sstride; | |
448 | } | |
449 | } | |
450 | ||
3cc76ad5 | 451 | fn vp3_interp1x(dst: &mut [u8], dstride: usize, src: &[u8], sstride: usize, bw: usize, bh: usize) |
3584b223 KS |
452 | { |
453 | let mut didx = 0; | |
454 | let mut sidx = 0; | |
455 | for _ in 0..bh { | |
456 | for x in 0..bw { | |
457 | dst[didx + x] = (((src[sidx + x] as u16) + | |
3cc76ad5 | 458 | (src[sidx + x + sstride + 1] as u16)) >> 1) as u8; |
3584b223 KS |
459 | } |
460 | didx += dstride; | |
461 | sidx += sstride; | |
462 | } | |
463 | } | |
464 | ||
3cc76ad5 KS |
465 | fn vp3_interp1y(dst: &mut [u8], dstride: usize, src: &[u8], sstride: usize, bw: usize, bh: usize) |
466 | { | |
467 | let mut didx = 0; | |
468 | let mut sidx = 0; | |
469 | for _ in 0..bh { | |
470 | for x in 0..bw { | |
471 | dst[didx + x] = (((src[sidx + x + 1] as u16) + | |
472 | (src[sidx + x + sstride] as u16)) >> 1) as u8; | |
473 | } | |
474 | didx += dstride; | |
475 | sidx += sstride; | |
476 | } | |
477 | } | |
478 | ||
479 | pub const VP3_INTERP_FUNCS: &[blockdsp::BlkInterpFunc] = &[ vp3_interp00, vp3_interp01, vp3_interp10, vp3_interp1x, vp3_interp1y ]; | |
3584b223 | 480 |