1 // Copyright 2016 Google Inc. All Rights Reserved.
2 //
3 // Use of this source code is governed by a BSD-style license
4 // that can be found in the COPYING file in the root of the source
5 // tree. An additional intellectual property rights grant can be found
6 // in the file PATENTS. All contributing project authors may
7 // be found in the AUTHORS file in the root of the source tree.
8 // -----------------------------------------------------------------------------
9 //
10 // MSA version of YUV to RGB upsampling functions.
11 //
12 // Author: Prashant Patil (prashant.patil@imgtec.com)
13
14 #include <string.h>
15 #include "./dsp.h"
16
17 #if defined(WEBP_USE_MSA)
18
19 #include "./msa_macro.h"
20 #include "./yuv.h"
21
22 #ifdef FANCY_UPSAMPLING
23
24 #define ILVR_UW2(in, out0, out1) do { \
25 const v8i16 t0 = (v8i16)__msa_ilvr_b((v16i8)zero, (v16i8)in); \
26 out0 = (v4u32)__msa_ilvr_h((v8i16)zero, t0); \
27 out1 = (v4u32)__msa_ilvl_h((v8i16)zero, t0); \
28 } while (0)
29
30 #define ILVRL_UW4(in, out0, out1, out2, out3) do { \
31 v16u8 t0, t1; \
32 ILVRL_B2_UB(zero, in, t0, t1); \
33 ILVRL_H2_UW(zero, t0, out0, out1); \
34 ILVRL_H2_UW(zero, t1, out2, out3); \
35 } while (0)
36
37 #define MULTHI_16(in0, in1, in2, in3, cnst, out0, out1) do { \
38 const v4i32 const0 = (v4i32)__msa_fill_w(cnst * 256); \
39 v4u32 temp0, temp1, temp2, temp3; \
40 MUL4(in0, const0, in1, const0, in2, const0, in3, const0, \
41 temp0, temp1, temp2, temp3); \
42 PCKOD_H2_UH(temp1, temp0, temp3, temp2, out0, out1); \
43 } while (0)
44
45 #define MULTHI_8(in0, in1, cnst, out0) do { \
46 const v4i32 const0 = (v4i32)__msa_fill_w(cnst * 256); \
47 v4u32 temp0, temp1; \
48 MUL2(in0, const0, in1, const0, temp0, temp1); \
49 out0 = (v8u16)__msa_pckod_h((v8i16)temp1, (v8i16)temp0); \
50 } while (0)
51
52 #define CALC_R16(y0, y1, v0, v1, dst) do { \
53 const v8i16 const_a = (v8i16)__msa_fill_h(14234); \
54 const v8i16 a0 = __msa_adds_s_h((v8i16)y0, (v8i16)v0); \
55 const v8i16 a1 = __msa_adds_s_h((v8i16)y1, (v8i16)v1); \
56 v8i16 b0 = __msa_subs_s_h(a0, const_a); \
57 v8i16 b1 = __msa_subs_s_h(a1, const_a); \
58 SRAI_H2_SH(b0, b1, 6); \
59 CLIP_SH2_0_255(b0, b1); \
60 dst = (v16u8)__msa_pckev_b((v16i8)b1, (v16i8)b0); \
61 } while (0)
62
63 #define CALC_R8(y0, v0, dst) do { \
64 const v8i16 const_a = (v8i16)__msa_fill_h(14234); \
65 const v8i16 a0 = __msa_adds_s_h((v8i16)y0, (v8i16)v0); \
66 v8i16 b0 = __msa_subs_s_h(a0, const_a); \
67 b0 = SRAI_H(b0, 6); \
68 CLIP_SH_0_255(b0); \
69 dst = (v16u8)__msa_pckev_b((v16i8)b0, (v16i8)b0); \
70 } while (0)
71
72 #define CALC_G16(y0, y1, u0, u1, v0, v1, dst) do { \
73 const v8i16 const_a = (v8i16)__msa_fill_h(8708); \
74 v8i16 a0 = __msa_subs_s_h((v8i16)y0, (v8i16)u0); \
75 v8i16 a1 = __msa_subs_s_h((v8i16)y1, (v8i16)u1); \
76 const v8i16 b0 = __msa_subs_s_h(a0, (v8i16)v0); \
77 const v8i16 b1 = __msa_subs_s_h(a1, (v8i16)v1); \
78 a0 = __msa_adds_s_h(b0, const_a); \
79 a1 = __msa_adds_s_h(b1, const_a); \
80 SRAI_H2_SH(a0, a1, 6); \
81 CLIP_SH2_0_255(a0, a1); \
82 dst = (v16u8)__msa_pckev_b((v16i8)a1, (v16i8)a0); \
83 } while (0)
84
85 #define CALC_G8(y0, u0, v0, dst) do { \
86 const v8i16 const_a = (v8i16)__msa_fill_h(8708); \
87 v8i16 a0 = __msa_subs_s_h((v8i16)y0, (v8i16)u0); \
88 const v8i16 b0 = __msa_subs_s_h(a0, (v8i16)v0); \
89 a0 = __msa_adds_s_h(b0, const_a); \
90 a0 = SRAI_H(a0, 6); \
91 CLIP_SH_0_255(a0); \
92 dst = (v16u8)__msa_pckev_b((v16i8)a0, (v16i8)a0); \
93 } while (0)
94
95 #define CALC_B16(y0, y1, u0, u1, dst) do { \
96 const v8u16 const_a = (v8u16)__msa_fill_h(17685); \
97 const v8u16 a0 = __msa_adds_u_h((v8u16)y0, u0); \
98 const v8u16 a1 = __msa_adds_u_h((v8u16)y1, u1); \
99 v8u16 b0 = __msa_subs_u_h(a0, const_a); \
100 v8u16 b1 = __msa_subs_u_h(a1, const_a); \
101 SRAI_H2_UH(b0, b1, 6); \
102 CLIP_UH2_0_255(b0, b1); \
103 dst = (v16u8)__msa_pckev_b((v16i8)b1, (v16i8)b0); \
104 } while (0)
105
106 #define CALC_B8(y0, u0, dst) do { \
107 const v8u16 const_a = (v8u16)__msa_fill_h(17685); \
108 const v8u16 a0 = __msa_adds_u_h((v8u16)y0, u0); \
109 v8u16 b0 = __msa_subs_u_h(a0, const_a); \
110 b0 = SRAI_H(b0, 6); \
111 CLIP_UH_0_255(b0); \
112 dst = (v16u8)__msa_pckev_b((v16i8)b0, (v16i8)b0); \
113 } while (0)
114
115 #define CALC_RGB16(y, u, v, R, G, B) do { \
116 const v16u8 zero = { 0 }; \
117 v8u16 y0, y1, u0, u1, v0, v1; \
118 v4u32 p0, p1, p2, p3; \
119 const v16u8 in_y = LD_UB(y); \
120 const v16u8 in_u = LD_UB(u); \
121 const v16u8 in_v = LD_UB(v); \
122 ILVRL_UW4(in_y, p0, p1, p2, p3); \
123 MULTHI_16(p0, p1, p2, p3, 19077, y0, y1); \
124 ILVRL_UW4(in_v, p0, p1, p2, p3); \
125 MULTHI_16(p0, p1, p2, p3, 26149, v0, v1); \
126 CALC_R16(y0, y1, v0, v1, R); \
127 MULTHI_16(p0, p1, p2, p3, 13320, v0, v1); \
128 ILVRL_UW4(in_u, p0, p1, p2, p3); \
129 MULTHI_16(p0, p1, p2, p3, 6419, u0, u1); \
130 CALC_G16(y0, y1, u0, u1, v0, v1, G); \
131 MULTHI_16(p0, p1, p2, p3, 33050, u0, u1); \
132 CALC_B16(y0, y1, u0, u1, B); \
133 } while (0)
134
135 #define CALC_RGB8(y, u, v, R, G, B) do { \
136 const v16u8 zero = { 0 }; \
137 v8u16 y0, u0, v0; \
138 v4u32 p0, p1; \
139 const v16u8 in_y = LD_UB(y); \
140 const v16u8 in_u = LD_UB(u); \
141 const v16u8 in_v = LD_UB(v); \
142 ILVR_UW2(in_y, p0, p1); \
143 MULTHI_8(p0, p1, 19077, y0); \
144 ILVR_UW2(in_v, p0, p1); \
145 MULTHI_8(p0, p1, 26149, v0); \
146 CALC_R8(y0, v0, R); \
147 MULTHI_8(p0, p1, 13320, v0); \
148 ILVR_UW2(in_u, p0, p1); \
149 MULTHI_8(p0, p1, 6419, u0); \
150 CALC_G8(y0, u0, v0, G); \
151 MULTHI_8(p0, p1, 33050, u0); \
152 CALC_B8(y0, u0, B); \
153 } while (0)
154
155 #define STORE16_3(a0, a1, a2, dst) do { \
156 const v16u8 mask0 = { 0, 1, 16, 2, 3, 17, 4, 5, 18, 6, 7, 19, \
157 8, 9, 20, 10 }; \
158 const v16u8 mask1 = { 0, 21, 1, 2, 22, 3, 4, 23, 5, 6, 24, 7, \
159 8, 25, 9, 10 }; \
160 const v16u8 mask2 = { 26, 0, 1, 27, 2, 3, 28, 4, 5, 29, 6, 7, \
161 30, 8, 9, 31 }; \
162 v16u8 out0, out1, out2, tmp0, tmp1, tmp2; \
163 ILVRL_B2_UB(a1, a0, tmp0, tmp1); \
164 out0 = VSHF_UB(tmp0, a2, mask0); \
165 tmp2 = SLDI_UB(tmp1, tmp0, 11); \
166 out1 = VSHF_UB(tmp2, a2, mask1); \
167 tmp2 = SLDI_UB(tmp1, tmp1, 6); \
168 out2 = VSHF_UB(tmp2, a2, mask2); \
169 ST_UB(out0, dst + 0); \
170 ST_UB(out1, dst + 16); \
171 ST_UB(out2, dst + 32); \
172 } while (0)
173
174 #define STORE8_3(a0, a1, a2, dst) do { \
175 int64_t out_m; \
176 const v16u8 mask0 = { 0, 1, 16, 2, 3, 17, 4, 5, 18, 6, 7, 19, \
177 8, 9, 20, 10 }; \
178 const v16u8 mask1 = { 11, 21, 12, 13, 22, 14, 15, 23, \
179 255, 255, 255, 255, 255, 255, 255, 255 }; \
180 const v16u8 tmp0 = (v16u8)__msa_ilvr_b((v16i8)a1, (v16i8)a0); \
181 v16u8 out0, out1; \
182 VSHF_B2_UB(tmp0, a2, tmp0, a2, mask0, mask1, out0, out1); \
183 ST_UB(out0, dst); \
184 out_m = __msa_copy_s_d((v2i64)out1, 0); \
185 SD(out_m, dst + 16); \
186 } while (0)
187
188 #define STORE16_4(a0, a1, a2, a3, dst) do { \
189 v16u8 tmp0, tmp1, tmp2, tmp3; \
190 v16u8 out0, out1, out2, out3; \
191 ILVRL_B2_UB(a1, a0, tmp0, tmp1); \
192 ILVRL_B2_UB(a3, a2, tmp2, tmp3); \
193 ILVRL_H2_UB(tmp2, tmp0, out0, out1); \
194 ILVRL_H2_UB(tmp3, tmp1, out2, out3); \
195 ST_UB(out0, dst + 0); \
196 ST_UB(out1, dst + 16); \
197 ST_UB(out2, dst + 32); \
198 ST_UB(out3, dst + 48); \
199 } while (0)
200
201 #define STORE8_4(a0, a1, a2, a3, dst) do { \
202 v16u8 tmp0, tmp1, tmp2, tmp3; \
203 ILVR_B2_UB(a1, a0, a3, a2, tmp0, tmp1); \
204 ILVRL_H2_UB(tmp1, tmp0, tmp2, tmp3); \
205 ST_UB(tmp2, dst + 0); \
206 ST_UB(tmp3, dst + 16); \
207 } while (0)
208
209 #define STORE2_16(a0, a1, dst) do { \
210 v16u8 out0, out1; \
211 ILVRL_B2_UB(a1, a0, out0, out1); \
212 ST_UB(out0, dst + 0); \
213 ST_UB(out1, dst + 16); \
214 } while (0)
215
216 #define STORE2_8(a0, a1, dst) do { \
217 const v16u8 out0 = (v16u8)__msa_ilvr_b((v16i8)a1, (v16i8)a0); \
218 ST_UB(out0, dst); \
219 } while (0)
220
221 #define CALC_RGBA4444(y, u, v, out0, out1, N, dst) do { \
222 CALC_RGB##N(y, u, v, R, G, B); \
223 tmp0 = ANDI_B(R, 0xf0); \
224 tmp1 = SRAI_B(G, 4); \
225 RG = tmp0 | tmp1; \
226 tmp0 = ANDI_B(B, 0xf0); \
227 BA = ORI_B(tmp0, 0x0f); \
228 STORE2_##N(out0, out1, dst); \
229 } while (0)
230
231 #define CALC_RGB565(y, u, v, out0, out1, N, dst) do { \
232 CALC_RGB##N(y, u, v, R, G, B); \
233 tmp0 = ANDI_B(R, 0xf8); \
234 tmp1 = SRAI_B(G, 5); \
235 RG = tmp0 | tmp1; \
236 tmp0 = SLLI_B(G, 3); \
237 tmp1 = ANDI_B(tmp0, 0xe0); \
238 tmp0 = SRAI_B(B, 3); \
239 GB = tmp0 | tmp1; \
240 STORE2_##N(out0, out1, dst); \
241 } while (0)
242
Clip8(int v)243 static WEBP_INLINE int Clip8(int v) {
244 return v < 0 ? 0 : v > 255 ? 255 : v;
245 }
246
YuvToRgb(int y,int u,int v,uint8_t * const rgb)247 static void YuvToRgb(int y, int u, int v, uint8_t* const rgb) {
248 const int y1 = MultHi(y, 19077);
249 const int r1 = y1 + MultHi(v, 26149) - 14234;
250 const int g1 = y1 - MultHi(u, 6419) - MultHi(v, 13320) + 8708;
251 const int b1 = y1 + MultHi(u, 33050) - 17685;
252 rgb[0] = Clip8(r1 >> 6);
253 rgb[1] = Clip8(g1 >> 6);
254 rgb[2] = Clip8(b1 >> 6);
255 }
256
YuvToBgr(int y,int u,int v,uint8_t * const bgr)257 static void YuvToBgr(int y, int u, int v, uint8_t* const bgr) {
258 const int y1 = MultHi(y, 19077);
259 const int r1 = y1 + MultHi(v, 26149) - 14234;
260 const int g1 = y1 - MultHi(u, 6419) - MultHi(v, 13320) + 8708;
261 const int b1 = y1 + MultHi(u, 33050) - 17685;
262 bgr[0] = Clip8(b1 >> 6);
263 bgr[1] = Clip8(g1 >> 6);
264 bgr[2] = Clip8(r1 >> 6);
265 }
266
YuvToRgb565(int y,int u,int v,uint8_t * const rgb)267 static void YuvToRgb565(int y, int u, int v, uint8_t* const rgb) {
268 const int y1 = MultHi(y, 19077);
269 const int r1 = y1 + MultHi(v, 26149) - 14234;
270 const int g1 = y1 - MultHi(u, 6419) - MultHi(v, 13320) + 8708;
271 const int b1 = y1 + MultHi(u, 33050) - 17685;
272 const int r = Clip8(r1 >> 6);
273 const int g = Clip8(g1 >> 6);
274 const int b = Clip8(b1 >> 6);
275 const int rg = (r & 0xf8) | (g >> 5);
276 const int gb = ((g << 3) & 0xe0) | (b >> 3);
277 #ifdef WEBP_SWAP_16BIT_CSP
278 rgb[0] = gb;
279 rgb[1] = rg;
280 #else
281 rgb[0] = rg;
282 rgb[1] = gb;
283 #endif
284 }
285
YuvToRgba4444(int y,int u,int v,uint8_t * const argb)286 static void YuvToRgba4444(int y, int u, int v, uint8_t* const argb) {
287 const int y1 = MultHi(y, 19077);
288 const int r1 = y1 + MultHi(v, 26149) - 14234;
289 const int g1 = y1 - MultHi(u, 6419) - MultHi(v, 13320) + 8708;
290 const int b1 = y1 + MultHi(u, 33050) - 17685;
291 const int r = Clip8(r1 >> 6);
292 const int g = Clip8(g1 >> 6);
293 const int b = Clip8(b1 >> 6);
294 const int rg = (r & 0xf0) | (g >> 4);
295 const int ba = (b & 0xf0) | 0x0f; // overwrite the lower 4 bits
296 #ifdef WEBP_SWAP_16BIT_CSP
297 argb[0] = ba;
298 argb[1] = rg;
299 #else
300 argb[0] = rg;
301 argb[1] = ba;
302 #endif
303 }
304
YuvToArgb(uint8_t y,uint8_t u,uint8_t v,uint8_t * const argb)305 static void YuvToArgb(uint8_t y, uint8_t u, uint8_t v, uint8_t* const argb) {
306 argb[0] = 0xff;
307 YuvToRgb(y, u, v, argb + 1);
308 }
309
YuvToBgra(uint8_t y,uint8_t u,uint8_t v,uint8_t * const bgra)310 static void YuvToBgra(uint8_t y, uint8_t u, uint8_t v, uint8_t* const bgra) {
311 YuvToBgr(y, u, v, bgra);
312 bgra[3] = 0xff;
313 }
314
YuvToRgba(uint8_t y,uint8_t u,uint8_t v,uint8_t * const rgba)315 static void YuvToRgba(uint8_t y, uint8_t u, uint8_t v, uint8_t* const rgba) {
316 YuvToRgb(y, u, v, rgba);
317 rgba[3] = 0xff;
318 }
319
YuvToRgbLine(const uint8_t * y,const uint8_t * u,const uint8_t * v,uint8_t * dst,int length)320 static void YuvToRgbLine(const uint8_t* y, const uint8_t* u,
321 const uint8_t* v, uint8_t* dst, int length) {
322 v16u8 R, G, B;
323 while (length >= 16) {
324 CALC_RGB16(y, u, v, R, G, B);
325 STORE16_3(R, G, B, dst);
326 y += 16;
327 u += 16;
328 v += 16;
329 dst += 16 * 3;
330 length -= 16;
331 }
332 if (length > 8) {
333 uint8_t temp[3 * 16] = { 0 };
334 memcpy(temp, y, length * sizeof(*temp));
335 CALC_RGB16(temp, u, v, R, G, B);
336 STORE16_3(R, G, B, temp);
337 memcpy(dst, temp, length * 3 * sizeof(*dst));
338 } else if (length > 0) {
339 uint8_t temp[3 * 8] = { 0 };
340 memcpy(temp, y, length * sizeof(*temp));
341 CALC_RGB8(temp, u, v, R, G, B);
342 STORE8_3(R, G, B, temp);
343 memcpy(dst, temp, length * 3 * sizeof(*dst));
344 }
345 }
346
YuvToBgrLine(const uint8_t * y,const uint8_t * u,const uint8_t * v,uint8_t * dst,int length)347 static void YuvToBgrLine(const uint8_t* y, const uint8_t* u,
348 const uint8_t* v, uint8_t* dst, int length) {
349 v16u8 R, G, B;
350 while (length >= 16) {
351 CALC_RGB16(y, u, v, R, G, B);
352 STORE16_3(B, G, R, dst);
353 y += 16;
354 u += 16;
355 v += 16;
356 dst += 16 * 3;
357 length -= 16;
358 }
359 if (length > 8) {
360 uint8_t temp[3 * 16] = { 0 };
361 memcpy(temp, y, length * sizeof(*temp));
362 CALC_RGB16(temp, u, v, R, G, B);
363 STORE16_3(B, G, R, temp);
364 memcpy(dst, temp, length * 3 * sizeof(*dst));
365 } else if (length > 0) {
366 uint8_t temp[3 * 8] = { 0 };
367 memcpy(temp, y, length * sizeof(*temp));
368 CALC_RGB8(temp, u, v, R, G, B);
369 STORE8_3(B, G, R, temp);
370 memcpy(dst, temp, length * 3 * sizeof(*dst));
371 }
372 }
373
YuvToRgbaLine(const uint8_t * y,const uint8_t * u,const uint8_t * v,uint8_t * dst,int length)374 static void YuvToRgbaLine(const uint8_t* y, const uint8_t* u,
375 const uint8_t* v, uint8_t* dst, int length) {
376 v16u8 R, G, B;
377 const v16u8 A = (v16u8)__msa_ldi_b(0xff);
378 while (length >= 16) {
379 CALC_RGB16(y, u, v, R, G, B);
380 STORE16_4(R, G, B, A, dst);
381 y += 16;
382 u += 16;
383 v += 16;
384 dst += 16 * 4;
385 length -= 16;
386 }
387 if (length > 8) {
388 uint8_t temp[4 * 16] = { 0 };
389 memcpy(temp, y, length * sizeof(*temp));
390 CALC_RGB16(&temp[0], u, v, R, G, B);
391 STORE16_4(R, G, B, A, temp);
392 memcpy(dst, temp, length * 4 * sizeof(*dst));
393 } else if (length > 0) {
394 uint8_t temp[4 * 8] = { 0 };
395 memcpy(temp, y, length * sizeof(*temp));
396 CALC_RGB8(temp, u, v, R, G, B);
397 STORE8_4(R, G, B, A, temp);
398 memcpy(dst, temp, length * 4 * sizeof(*dst));
399 }
400 }
401
YuvToBgraLine(const uint8_t * y,const uint8_t * u,const uint8_t * v,uint8_t * dst,int length)402 static void YuvToBgraLine(const uint8_t* y, const uint8_t* u,
403 const uint8_t* v, uint8_t* dst, int length) {
404 v16u8 R, G, B;
405 const v16u8 A = (v16u8)__msa_ldi_b(0xff);
406 while (length >= 16) {
407 CALC_RGB16(y, u, v, R, G, B);
408 STORE16_4(B, G, R, A, dst);
409 y += 16;
410 u += 16;
411 v += 16;
412 dst += 16 * 4;
413 length -= 16;
414 }
415 if (length > 8) {
416 uint8_t temp[4 * 16] = { 0 };
417 memcpy(temp, y, length * sizeof(*temp));
418 CALC_RGB16(temp, u, v, R, G, B);
419 STORE16_4(B, G, R, A, temp);
420 memcpy(dst, temp, length * 4 * sizeof(*dst));
421 } else if (length > 0) {
422 uint8_t temp[4 * 8] = { 0 };
423 memcpy(temp, y, length * sizeof(*temp));
424 CALC_RGB8(temp, u, v, R, G, B);
425 STORE8_4(B, G, R, A, temp);
426 memcpy(dst, temp, length * 4 * sizeof(*dst));
427 }
428 }
429
YuvToArgbLine(const uint8_t * y,const uint8_t * u,const uint8_t * v,uint8_t * dst,int length)430 static void YuvToArgbLine(const uint8_t* y, const uint8_t* u,
431 const uint8_t* v, uint8_t* dst, int length) {
432 v16u8 R, G, B;
433 const v16u8 A = (v16u8)__msa_ldi_b(0xff);
434 while (length >= 16) {
435 CALC_RGB16(y, u, v, R, G, B);
436 STORE16_4(A, R, G, B, dst);
437 y += 16;
438 u += 16;
439 v += 16;
440 dst += 16 * 4;
441 length -= 16;
442 }
443 if (length > 8) {
444 uint8_t temp[4 * 16] = { 0 };
445 memcpy(temp, y, length * sizeof(*temp));
446 CALC_RGB16(temp, u, v, R, G, B);
447 STORE16_4(A, R, G, B, temp);
448 memcpy(dst, temp, length * 4 * sizeof(*dst));
449 } else if (length > 0) {
450 uint8_t temp[4 * 8] = { 0 };
451 memcpy(temp, y, length * sizeof(*temp));
452 CALC_RGB8(temp, u, v, R, G, B);
453 STORE8_4(A, R, G, B, temp);
454 memcpy(dst, temp, length * 4 * sizeof(*dst));
455 }
456 }
457
YuvToRgba4444Line(const uint8_t * y,const uint8_t * u,const uint8_t * v,uint8_t * dst,int length)458 static void YuvToRgba4444Line(const uint8_t* y, const uint8_t* u,
459 const uint8_t* v, uint8_t* dst, int length) {
460 v16u8 R, G, B, RG, BA, tmp0, tmp1;
461 while (length >= 16) {
462 #ifdef WEBP_SWAP_16BIT_CSP
463 CALC_RGBA4444(y, u, v, BA, RG, 16, dst);
464 #else
465 CALC_RGBA4444(y, u, v, RG, BA, 16, dst);
466 #endif
467 y += 16;
468 u += 16;
469 v += 16;
470 dst += 16 * 2;
471 length -= 16;
472 }
473 if (length > 8) {
474 uint8_t temp[2 * 16] = { 0 };
475 memcpy(temp, y, length * sizeof(*temp));
476 #ifdef WEBP_SWAP_16BIT_CSP
477 CALC_RGBA4444(temp, u, v, BA, RG, 16, temp);
478 #else
479 CALC_RGBA4444(temp, u, v, RG, BA, 16, temp);
480 #endif
481 memcpy(dst, temp, length * 2 * sizeof(*dst));
482 } else if (length > 0) {
483 uint8_t temp[2 * 8] = { 0 };
484 memcpy(temp, y, length * sizeof(*temp));
485 #ifdef WEBP_SWAP_16BIT_CSP
486 CALC_RGBA4444(temp, u, v, BA, RG, 8, temp);
487 #else
488 CALC_RGBA4444(temp, u, v, RG, BA, 8, temp);
489 #endif
490 memcpy(dst, temp, length * 2 * sizeof(*dst));
491 }
492 }
493
YuvToRgb565Line(const uint8_t * y,const uint8_t * u,const uint8_t * v,uint8_t * dst,int length)494 static void YuvToRgb565Line(const uint8_t* y, const uint8_t* u,
495 const uint8_t* v, uint8_t* dst, int length) {
496 v16u8 R, G, B, RG, GB, tmp0, tmp1;
497 while (length >= 16) {
498 #ifdef WEBP_SWAP_16BIT_CSP
499 CALC_RGB565(y, u, v, GB, RG, 16, dst);
500 #else
501 CALC_RGB565(y, u, v, RG, GB, 16, dst);
502 #endif
503 y += 16;
504 u += 16;
505 v += 16;
506 dst += 16 * 2;
507 length -= 16;
508 }
509 if (length > 8) {
510 uint8_t temp[2 * 16] = { 0 };
511 memcpy(temp, y, length * sizeof(*temp));
512 #ifdef WEBP_SWAP_16BIT_CSP
513 CALC_RGB565(temp, u, v, GB, RG, 16, temp);
514 #else
515 CALC_RGB565(temp, u, v, RG, GB, 16, temp);
516 #endif
517 memcpy(dst, temp, length * 2 * sizeof(*dst));
518 } else if (length > 0) {
519 uint8_t temp[2 * 8] = { 0 };
520 memcpy(temp, y, length * sizeof(*temp));
521 #ifdef WEBP_SWAP_16BIT_CSP
522 CALC_RGB565(temp, u, v, GB, RG, 8, temp);
523 #else
524 CALC_RGB565(temp, u, v, RG, GB, 8, temp);
525 #endif
526 memcpy(dst, temp, length * 2 * sizeof(*dst));
527 }
528 }
529
530 #define UPSAMPLE_32PIXELS(a, b, c, d) do { \
531 v16u8 s = __msa_aver_u_b(a, d); \
532 v16u8 t = __msa_aver_u_b(b, c); \
533 const v16u8 st = s ^ t; \
534 v16u8 ad = a ^ d; \
535 v16u8 bc = b ^ c; \
536 v16u8 t0 = ad | bc; \
537 v16u8 t1 = t0 | st; \
538 v16u8 t2 = ANDI_B(t1, 1); \
539 v16u8 t3 = __msa_aver_u_b(s, t); \
540 const v16u8 k = t3 - t2; \
541 v16u8 diag1, diag2; \
542 AVER_UB2_UB(t, k, s, k, t0, t1); \
543 bc = bc & st; \
544 ad = ad & st; \
545 t = t ^ k; \
546 s = s ^ k; \
547 t2 = bc | t; \
548 t3 = ad | s; \
549 t2 = ANDI_B(t2, 1); \
550 t3 = ANDI_B(t3, 1); \
551 SUB2(t0, t2, t1, t3, diag1, diag2); \
552 AVER_UB2_UB(a, diag1, b, diag2, t0, t1); \
553 ILVRL_B2_UB(t1, t0, a, b); \
554 if (pbot_y != NULL) { \
555 AVER_UB2_UB(c, diag2, d, diag1, t0, t1); \
556 ILVRL_B2_UB(t1, t0, c, d); \
557 } \
558 } while (0)
559
560 #define UPSAMPLE_FUNC(FUNC_NAME, FUNC, XSTEP) \
561 static void FUNC_NAME(const uint8_t* top_y, const uint8_t* bot_y, \
562 const uint8_t* top_u, const uint8_t* top_v, \
563 const uint8_t* cur_u, const uint8_t* cur_v, \
564 uint8_t* top_dst, uint8_t* bot_dst, int len) \
565 { \
566 int size = (len - 1) >> 1; \
567 uint8_t temp_u[64]; \
568 uint8_t temp_v[64]; \
569 const uint32_t tl_uv = ((top_u[0]) | ((top_v[0]) << 16)); \
570 const uint32_t l_uv = ((cur_u[0]) | ((cur_v[0]) << 16)); \
571 const uint32_t uv0 = (3 * tl_uv + l_uv + 0x00020002u) >> 2; \
572 const uint8_t* ptop_y = &top_y[1]; \
573 uint8_t *ptop_dst = top_dst + XSTEP; \
574 const uint8_t* pbot_y = &bot_y[1]; \
575 uint8_t *pbot_dst = bot_dst + XSTEP; \
576 \
577 FUNC(top_y[0], uv0 & 0xff, (uv0 >> 16), top_dst); \
578 if (bot_y != NULL) { \
579 const uint32_t uv1 = (3 * l_uv + tl_uv + 0x00020002u) >> 2; \
580 FUNC(bot_y[0], uv1 & 0xff, (uv1 >> 16), bot_dst); \
581 } \
582 while (size >= 16) { \
583 v16u8 tu0, tu1, tv0, tv1, cu0, cu1, cv0, cv1; \
584 LD_UB2(top_u, 1, tu0, tu1); \
585 LD_UB2(cur_u, 1, cu0, cu1); \
586 LD_UB2(top_v, 1, tv0, tv1); \
587 LD_UB2(cur_v, 1, cv0, cv1); \
588 UPSAMPLE_32PIXELS(tu0, tu1, cu0, cu1); \
589 UPSAMPLE_32PIXELS(tv0, tv1, cv0, cv1); \
590 ST_UB4(tu0, tu1, cu0, cu1, &temp_u[0], 16); \
591 ST_UB4(tv0, tv1, cv0, cv1, &temp_v[0], 16); \
592 FUNC##Line(ptop_y, &temp_u[ 0], &temp_v[0], ptop_dst, 32); \
593 if (bot_y != NULL) { \
594 FUNC##Line(pbot_y, &temp_u[32], &temp_v[32], pbot_dst, 32); \
595 } \
596 ptop_y += 32; \
597 pbot_y += 32; \
598 ptop_dst += XSTEP * 32; \
599 pbot_dst += XSTEP * 32; \
600 top_u += 16; \
601 top_v += 16; \
602 cur_u += 16; \
603 cur_v += 16; \
604 size -= 16; \
605 } \
606 if (size > 0) { \
607 v16u8 tu0, tu1, tv0, tv1, cu0, cu1, cv0, cv1; \
608 memcpy(&temp_u[ 0], top_u, 17 * sizeof(uint8_t)); \
609 memcpy(&temp_u[32], cur_u, 17 * sizeof(uint8_t)); \
610 memcpy(&temp_v[ 0], top_v, 17 * sizeof(uint8_t)); \
611 memcpy(&temp_v[32], cur_v, 17 * sizeof(uint8_t)); \
612 LD_UB2(&temp_u[ 0], 1, tu0, tu1); \
613 LD_UB2(&temp_u[32], 1, cu0, cu1); \
614 LD_UB2(&temp_v[ 0], 1, tv0, tv1); \
615 LD_UB2(&temp_v[32], 1, cv0, cv1); \
616 UPSAMPLE_32PIXELS(tu0, tu1, cu0, cu1); \
617 UPSAMPLE_32PIXELS(tv0, tv1, cv0, cv1); \
618 ST_UB4(tu0, tu1, cu0, cu1, &temp_u[0], 16); \
619 ST_UB4(tv0, tv1, cv0, cv1, &temp_v[0], 16); \
620 FUNC##Line(ptop_y, &temp_u[ 0], &temp_v[0], ptop_dst, size * 2); \
621 if (bot_y != NULL) { \
622 FUNC##Line(pbot_y, &temp_u[32], &temp_v[32], pbot_dst, size * 2); \
623 } \
624 top_u += size; \
625 top_v += size; \
626 cur_u += size; \
627 cur_v += size; \
628 } \
629 if (!(len & 1)) { \
630 const uint32_t t0 = ((top_u[0]) | ((top_v[0]) << 16)); \
631 const uint32_t c0 = ((cur_u[0]) | ((cur_v[0]) << 16)); \
632 const uint32_t tmp0 = (3 * t0 + c0 + 0x00020002u) >> 2; \
633 FUNC(top_y[len - 1], tmp0 & 0xff, (tmp0 >> 16), \
634 top_dst + (len - 1) * XSTEP); \
635 if (bot_y != NULL) { \
636 const uint32_t tmp1 = (3 * c0 + t0 + 0x00020002u) >> 2; \
637 FUNC(bot_y[len - 1], tmp1 & 0xff, (tmp1 >> 16), \
638 bot_dst + (len - 1) * XSTEP); \
639 } \
640 } \
641 }
642
643 UPSAMPLE_FUNC(UpsampleRgbLinePair, YuvToRgb, 3)
644 UPSAMPLE_FUNC(UpsampleBgrLinePair, YuvToBgr, 3)
645 UPSAMPLE_FUNC(UpsampleRgbaLinePair, YuvToRgba, 4)
646 UPSAMPLE_FUNC(UpsampleBgraLinePair, YuvToBgra, 4)
647 UPSAMPLE_FUNC(UpsampleArgbLinePair, YuvToArgb, 4)
648 UPSAMPLE_FUNC(UpsampleRgba4444LinePair, YuvToRgba4444, 2)
649 UPSAMPLE_FUNC(UpsampleRgb565LinePair, YuvToRgb565, 2)
650
651 //------------------------------------------------------------------------------
652 // Entry point
653
654 extern WebPUpsampleLinePairFunc WebPUpsamplers[/* MODE_LAST */];
655
656 extern void WebPInitUpsamplersMSA(void);
657
WebPInitUpsamplersMSA(void)658 WEBP_TSAN_IGNORE_FUNCTION void WebPInitUpsamplersMSA(void) {
659 WebPUpsamplers[MODE_RGB] = UpsampleRgbLinePair;
660 WebPUpsamplers[MODE_RGBA] = UpsampleRgbaLinePair;
661 WebPUpsamplers[MODE_BGR] = UpsampleBgrLinePair;
662 WebPUpsamplers[MODE_BGRA] = UpsampleBgraLinePair;
663 WebPUpsamplers[MODE_ARGB] = UpsampleArgbLinePair;
664 WebPUpsamplers[MODE_rgbA] = UpsampleRgbaLinePair;
665 WebPUpsamplers[MODE_bgrA] = UpsampleBgraLinePair;
666 WebPUpsamplers[MODE_Argb] = UpsampleArgbLinePair;
667 WebPUpsamplers[MODE_RGB_565] = UpsampleRgb565LinePair;
668 WebPUpsamplers[MODE_RGBA_4444] = UpsampleRgba4444LinePair;
669 WebPUpsamplers[MODE_rgbA_4444] = UpsampleRgba4444LinePair;
670 }
671
672 #endif // FANCY_UPSAMPLING
673
674 #endif // WEBP_USE_MSA
675
676 #if !(defined(FANCY_UPSAMPLING) && defined(WEBP_USE_MSA))
677 WEBP_DSP_INIT_STUB(WebPInitUpsamplersMSA)
678 #endif
679