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 "src/dsp/dsp.h"
16
17#if defined(WEBP_USE_MSA)
18
19#include "src/dsp/msa_macro.h"
20#include "src/dsp/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
243static WEBP_INLINE int Clip8(int v) {
244 return v < 0 ? 0 : v > 255 ? 255 : v;
245}
246
247static 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
257static 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
267#if !defined(WEBP_REDUCE_CSP)
268static void YuvToRgb565(int y, int u, int v, uint8_t* const rgb) {
269 const int y1 = MultHi(y, 19077);
270 const int r1 = y1 + MultHi(v, 26149) - 14234;
271 const int g1 = y1 - MultHi(u, 6419) - MultHi(v, 13320) + 8708;
272 const int b1 = y1 + MultHi(u, 33050) - 17685;
273 const int r = Clip8(r1 >> 6);
274 const int g = Clip8(g1 >> 6);
275 const int b = Clip8(b1 >> 6);
276 const int rg = (r & 0xf8) | (g >> 5);
277 const int gb = ((g << 3) & 0xe0) | (b >> 3);
278#if (WEBP_SWAP_16BIT_CSP == 1)
279 rgb[0] = gb;
280 rgb[1] = rg;
281#else
282 rgb[0] = rg;
283 rgb[1] = gb;
284#endif
285}
286
287static void YuvToRgba4444(int y, int u, int v, uint8_t* const argb) {
288 const int y1 = MultHi(y, 19077);
289 const int r1 = y1 + MultHi(v, 26149) - 14234;
290 const int g1 = y1 - MultHi(u, 6419) - MultHi(v, 13320) + 8708;
291 const int b1 = y1 + MultHi(u, 33050) - 17685;
292 const int r = Clip8(r1 >> 6);
293 const int g = Clip8(g1 >> 6);
294 const int b = Clip8(b1 >> 6);
295 const int rg = (r & 0xf0) | (g >> 4);
296 const int ba = (b & 0xf0) | 0x0f; // overwrite the lower 4 bits
297#if (WEBP_SWAP_16BIT_CSP == 1)
298 argb[0] = ba;
299 argb[1] = rg;
300#else
301 argb[0] = rg;
302 argb[1] = ba;
303#endif
304}
305
306static void YuvToArgb(uint8_t y, uint8_t u, uint8_t v, uint8_t* const argb) {
307 argb[0] = 0xff;
308 YuvToRgb(y, u, v, argb + 1);
309}
310#endif // WEBP_REDUCE_CSP
311
312static void YuvToBgra(uint8_t y, uint8_t u, uint8_t v, uint8_t* const bgra) {
313 YuvToBgr(y, u, v, bgra);
314 bgra[3] = 0xff;
315}
316
317static void YuvToRgba(uint8_t y, uint8_t u, uint8_t v, uint8_t* const rgba) {
318 YuvToRgb(y, u, v, rgba);
319 rgba[3] = 0xff;
320}
321
322#if !defined(WEBP_REDUCE_CSP)
323static void YuvToRgbLine(const uint8_t* y, const uint8_t* u,
324 const uint8_t* v, uint8_t* dst, int length) {
325 v16u8 R, G, B;
326 while (length >= 16) {
327 CALC_RGB16(y, u, v, R, G, B);
328 STORE16_3(R, G, B, dst);
329 y += 16;
330 u += 16;
331 v += 16;
332 dst += 16 * 3;
333 length -= 16;
334 }
335 if (length > 8) {
336 uint8_t temp[3 * 16] = { 0 };
337 memcpy(temp, y, length * sizeof(*temp));
338 CALC_RGB16(temp, u, v, R, G, B);
339 STORE16_3(R, G, B, temp);
340 memcpy(dst, temp, length * 3 * sizeof(*dst));
341 } else if (length > 0) {
342 uint8_t temp[3 * 8] = { 0 };
343 memcpy(temp, y, length * sizeof(*temp));
344 CALC_RGB8(temp, u, v, R, G, B);
345 STORE8_3(R, G, B, temp);
346 memcpy(dst, temp, length * 3 * sizeof(*dst));
347 }
348}
349
350static void YuvToBgrLine(const uint8_t* y, const uint8_t* u,
351 const uint8_t* v, uint8_t* dst, int length) {
352 v16u8 R, G, B;
353 while (length >= 16) {
354 CALC_RGB16(y, u, v, R, G, B);
355 STORE16_3(B, G, R, dst);
356 y += 16;
357 u += 16;
358 v += 16;
359 dst += 16 * 3;
360 length -= 16;
361 }
362 if (length > 8) {
363 uint8_t temp[3 * 16] = { 0 };
364 memcpy(temp, y, length * sizeof(*temp));
365 CALC_RGB16(temp, u, v, R, G, B);
366 STORE16_3(B, G, R, temp);
367 memcpy(dst, temp, length * 3 * sizeof(*dst));
368 } else if (length > 0) {
369 uint8_t temp[3 * 8] = { 0 };
370 memcpy(temp, y, length * sizeof(*temp));
371 CALC_RGB8(temp, u, v, R, G, B);
372 STORE8_3(B, G, R, temp);
373 memcpy(dst, temp, length * 3 * sizeof(*dst));
374 }
375}
376#endif // WEBP_REDUCE_CSP
377
378static void YuvToRgbaLine(const uint8_t* y, const uint8_t* u,
379 const uint8_t* v, uint8_t* dst, int length) {
380 v16u8 R, G, B;
381 const v16u8 A = (v16u8)__msa_ldi_b(ALPHAVAL);
382 while (length >= 16) {
383 CALC_RGB16(y, u, v, R, G, B);
384 STORE16_4(R, G, B, A, dst);
385 y += 16;
386 u += 16;
387 v += 16;
388 dst += 16 * 4;
389 length -= 16;
390 }
391 if (length > 8) {
392 uint8_t temp[4 * 16] = { 0 };
393 memcpy(temp, y, length * sizeof(*temp));
394 CALC_RGB16(&temp[0], u, v, R, G, B);
395 STORE16_4(R, G, B, A, temp);
396 memcpy(dst, temp, length * 4 * sizeof(*dst));
397 } else if (length > 0) {
398 uint8_t temp[4 * 8] = { 0 };
399 memcpy(temp, y, length * sizeof(*temp));
400 CALC_RGB8(temp, u, v, R, G, B);
401 STORE8_4(R, G, B, A, temp);
402 memcpy(dst, temp, length * 4 * sizeof(*dst));
403 }
404}
405
406static void YuvToBgraLine(const uint8_t* y, const uint8_t* u,
407 const uint8_t* v, uint8_t* dst, int length) {
408 v16u8 R, G, B;
409 const v16u8 A = (v16u8)__msa_ldi_b(ALPHAVAL);
410 while (length >= 16) {
411 CALC_RGB16(y, u, v, R, G, B);
412 STORE16_4(B, G, R, A, dst);
413 y += 16;
414 u += 16;
415 v += 16;
416 dst += 16 * 4;
417 length -= 16;
418 }
419 if (length > 8) {
420 uint8_t temp[4 * 16] = { 0 };
421 memcpy(temp, y, length * sizeof(*temp));
422 CALC_RGB16(temp, u, v, R, G, B);
423 STORE16_4(B, G, R, A, temp);
424 memcpy(dst, temp, length * 4 * sizeof(*dst));
425 } else if (length > 0) {
426 uint8_t temp[4 * 8] = { 0 };
427 memcpy(temp, y, length * sizeof(*temp));
428 CALC_RGB8(temp, u, v, R, G, B);
429 STORE8_4(B, G, R, A, temp);
430 memcpy(dst, temp, length * 4 * sizeof(*dst));
431 }
432}
433
434#if !defined(WEBP_REDUCE_CSP)
435static void YuvToArgbLine(const uint8_t* y, const uint8_t* u,
436 const uint8_t* v, uint8_t* dst, int length) {
437 v16u8 R, G, B;
438 const v16u8 A = (v16u8)__msa_ldi_b(ALPHAVAL);
439 while (length >= 16) {
440 CALC_RGB16(y, u, v, R, G, B);
441 STORE16_4(A, R, G, B, dst);
442 y += 16;
443 u += 16;
444 v += 16;
445 dst += 16 * 4;
446 length -= 16;
447 }
448 if (length > 8) {
449 uint8_t temp[4 * 16] = { 0 };
450 memcpy(temp, y, length * sizeof(*temp));
451 CALC_RGB16(temp, u, v, R, G, B);
452 STORE16_4(A, R, G, B, temp);
453 memcpy(dst, temp, length * 4 * sizeof(*dst));
454 } else if (length > 0) {
455 uint8_t temp[4 * 8] = { 0 };
456 memcpy(temp, y, length * sizeof(*temp));
457 CALC_RGB8(temp, u, v, R, G, B);
458 STORE8_4(A, R, G, B, temp);
459 memcpy(dst, temp, length * 4 * sizeof(*dst));
460 }
461}
462
463static void YuvToRgba4444Line(const uint8_t* y, const uint8_t* u,
464 const uint8_t* v, uint8_t* dst, int length) {
465 v16u8 R, G, B, RG, BA, tmp0, tmp1;
466 while (length >= 16) {
467#if (WEBP_SWAP_16BIT_CSP == 1)
468 CALC_RGBA4444(y, u, v, BA, RG, 16, dst);
469#else
470 CALC_RGBA4444(y, u, v, RG, BA, 16, dst);
471#endif
472 y += 16;
473 u += 16;
474 v += 16;
475 dst += 16 * 2;
476 length -= 16;
477 }
478 if (length > 8) {
479 uint8_t temp[2 * 16] = { 0 };
480 memcpy(temp, y, length * sizeof(*temp));
481#if (WEBP_SWAP_16BIT_CSP == 1)
482 CALC_RGBA4444(temp, u, v, BA, RG, 16, temp);
483#else
484 CALC_RGBA4444(temp, u, v, RG, BA, 16, temp);
485#endif
486 memcpy(dst, temp, length * 2 * sizeof(*dst));
487 } else if (length > 0) {
488 uint8_t temp[2 * 8] = { 0 };
489 memcpy(temp, y, length * sizeof(*temp));
490#if (WEBP_SWAP_16BIT_CSP == 1)
491 CALC_RGBA4444(temp, u, v, BA, RG, 8, temp);
492#else
493 CALC_RGBA4444(temp, u, v, RG, BA, 8, temp);
494#endif
495 memcpy(dst, temp, length * 2 * sizeof(*dst));
496 }
497}
498
499static void YuvToRgb565Line(const uint8_t* y, const uint8_t* u,
500 const uint8_t* v, uint8_t* dst, int length) {
501 v16u8 R, G, B, RG, GB, tmp0, tmp1;
502 while (length >= 16) {
503#if (WEBP_SWAP_16BIT_CSP == 1)
504 CALC_RGB565(y, u, v, GB, RG, 16, dst);
505#else
506 CALC_RGB565(y, u, v, RG, GB, 16, dst);
507#endif
508 y += 16;
509 u += 16;
510 v += 16;
511 dst += 16 * 2;
512 length -= 16;
513 }
514 if (length > 8) {
515 uint8_t temp[2 * 16] = { 0 };
516 memcpy(temp, y, length * sizeof(*temp));
517#if (WEBP_SWAP_16BIT_CSP == 1)
518 CALC_RGB565(temp, u, v, GB, RG, 16, temp);
519#else
520 CALC_RGB565(temp, u, v, RG, GB, 16, temp);
521#endif
522 memcpy(dst, temp, length * 2 * sizeof(*dst));
523 } else if (length > 0) {
524 uint8_t temp[2 * 8] = { 0 };
525 memcpy(temp, y, length * sizeof(*temp));
526#if (WEBP_SWAP_16BIT_CSP == 1)
527 CALC_RGB565(temp, u, v, GB, RG, 8, temp);
528#else
529 CALC_RGB565(temp, u, v, RG, GB, 8, temp);
530#endif
531 memcpy(dst, temp, length * 2 * sizeof(*dst));
532 }
533}
534#endif // WEBP_REDUCE_CSP
535
536#define UPSAMPLE_32PIXELS(a, b, c, d) do { \
537 v16u8 s = __msa_aver_u_b(a, d); \
538 v16u8 t = __msa_aver_u_b(b, c); \
539 const v16u8 st = s ^ t; \
540 v16u8 ad = a ^ d; \
541 v16u8 bc = b ^ c; \
542 v16u8 t0 = ad | bc; \
543 v16u8 t1 = t0 | st; \
544 v16u8 t2 = ANDI_B(t1, 1); \
545 v16u8 t3 = __msa_aver_u_b(s, t); \
546 const v16u8 k = t3 - t2; \
547 v16u8 diag1, diag2; \
548 AVER_UB2_UB(t, k, s, k, t0, t1); \
549 bc = bc & st; \
550 ad = ad & st; \
551 t = t ^ k; \
552 s = s ^ k; \
553 t2 = bc | t; \
554 t3 = ad | s; \
555 t2 = ANDI_B(t2, 1); \
556 t3 = ANDI_B(t3, 1); \
557 SUB2(t0, t2, t1, t3, diag1, diag2); \
558 AVER_UB2_UB(a, diag1, b, diag2, t0, t1); \
559 ILVRL_B2_UB(t1, t0, a, b); \
560 if (pbot_y != NULL) { \
561 AVER_UB2_UB(c, diag2, d, diag1, t0, t1); \
562 ILVRL_B2_UB(t1, t0, c, d); \
563 } \
564} while (0)
565
566#define UPSAMPLE_FUNC(FUNC_NAME, FUNC, XSTEP) \
567static void FUNC_NAME(const uint8_t* top_y, const uint8_t* bot_y, \
568 const uint8_t* top_u, const uint8_t* top_v, \
569 const uint8_t* cur_u, const uint8_t* cur_v, \
570 uint8_t* top_dst, uint8_t* bot_dst, int len) \
571{ \
572 int size = (len - 1) >> 1; \
573 uint8_t temp_u[64]; \
574 uint8_t temp_v[64]; \
575 const uint32_t tl_uv = ((top_u[0]) | ((top_v[0]) << 16)); \
576 const uint32_t l_uv = ((cur_u[0]) | ((cur_v[0]) << 16)); \
577 const uint32_t uv0 = (3 * tl_uv + l_uv + 0x00020002u) >> 2; \
578 const uint8_t* ptop_y = &top_y[1]; \
579 uint8_t* ptop_dst = top_dst + XSTEP; \
580 const uint8_t* pbot_y = &bot_y[1]; \
581 uint8_t* pbot_dst = bot_dst + XSTEP; \
582 \
583 FUNC(top_y[0], uv0 & 0xff, (uv0 >> 16), top_dst); \
584 if (bot_y != NULL) { \
585 const uint32_t uv1 = (3 * l_uv + tl_uv + 0x00020002u) >> 2; \
586 FUNC(bot_y[0], uv1 & 0xff, (uv1 >> 16), bot_dst); \
587 } \
588 while (size >= 16) { \
589 v16u8 tu0, tu1, tv0, tv1, cu0, cu1, cv0, cv1; \
590 LD_UB2(top_u, 1, tu0, tu1); \
591 LD_UB2(cur_u, 1, cu0, cu1); \
592 LD_UB2(top_v, 1, tv0, tv1); \
593 LD_UB2(cur_v, 1, cv0, cv1); \
594 UPSAMPLE_32PIXELS(tu0, tu1, cu0, cu1); \
595 UPSAMPLE_32PIXELS(tv0, tv1, cv0, cv1); \
596 ST_UB4(tu0, tu1, cu0, cu1, &temp_u[0], 16); \
597 ST_UB4(tv0, tv1, cv0, cv1, &temp_v[0], 16); \
598 FUNC##Line(ptop_y, &temp_u[ 0], &temp_v[0], ptop_dst, 32); \
599 if (bot_y != NULL) { \
600 FUNC##Line(pbot_y, &temp_u[32], &temp_v[32], pbot_dst, 32); \
601 } \
602 ptop_y += 32; \
603 pbot_y += 32; \
604 ptop_dst += XSTEP * 32; \
605 pbot_dst += XSTEP * 32; \
606 top_u += 16; \
607 top_v += 16; \
608 cur_u += 16; \
609 cur_v += 16; \
610 size -= 16; \
611 } \
612 if (size > 0) { \
613 v16u8 tu0, tu1, tv0, tv1, cu0, cu1, cv0, cv1; \
614 memcpy(&temp_u[ 0], top_u, 17 * sizeof(uint8_t)); \
615 memcpy(&temp_u[32], cur_u, 17 * sizeof(uint8_t)); \
616 memcpy(&temp_v[ 0], top_v, 17 * sizeof(uint8_t)); \
617 memcpy(&temp_v[32], cur_v, 17 * sizeof(uint8_t)); \
618 LD_UB2(&temp_u[ 0], 1, tu0, tu1); \
619 LD_UB2(&temp_u[32], 1, cu0, cu1); \
620 LD_UB2(&temp_v[ 0], 1, tv0, tv1); \
621 LD_UB2(&temp_v[32], 1, cv0, cv1); \
622 UPSAMPLE_32PIXELS(tu0, tu1, cu0, cu1); \
623 UPSAMPLE_32PIXELS(tv0, tv1, cv0, cv1); \
624 ST_UB4(tu0, tu1, cu0, cu1, &temp_u[0], 16); \
625 ST_UB4(tv0, tv1, cv0, cv1, &temp_v[0], 16); \
626 FUNC##Line(ptop_y, &temp_u[ 0], &temp_v[0], ptop_dst, size * 2); \
627 if (bot_y != NULL) { \
628 FUNC##Line(pbot_y, &temp_u[32], &temp_v[32], pbot_dst, size * 2); \
629 } \
630 top_u += size; \
631 top_v += size; \
632 cur_u += size; \
633 cur_v += size; \
634 } \
635 if (!(len & 1)) { \
636 const uint32_t t0 = ((top_u[0]) | ((top_v[0]) << 16)); \
637 const uint32_t c0 = ((cur_u[0]) | ((cur_v[0]) << 16)); \
638 const uint32_t tmp0 = (3 * t0 + c0 + 0x00020002u) >> 2; \
639 FUNC(top_y[len - 1], tmp0 & 0xff, (tmp0 >> 16), \
640 top_dst + (len - 1) * XSTEP); \
641 if (bot_y != NULL) { \
642 const uint32_t tmp1 = (3 * c0 + t0 + 0x00020002u) >> 2; \
643 FUNC(bot_y[len - 1], tmp1 & 0xff, (tmp1 >> 16), \
644 bot_dst + (len - 1) * XSTEP); \
645 } \
646 } \
647}
648
649UPSAMPLE_FUNC(UpsampleRgbaLinePair, YuvToRgba, 4)
650UPSAMPLE_FUNC(UpsampleBgraLinePair, YuvToBgra, 4)
651#if !defined(WEBP_REDUCE_CSP)
652UPSAMPLE_FUNC(UpsampleRgbLinePair, YuvToRgb, 3)
653UPSAMPLE_FUNC(UpsampleBgrLinePair, YuvToBgr, 3)
654UPSAMPLE_FUNC(UpsampleArgbLinePair, YuvToArgb, 4)
655UPSAMPLE_FUNC(UpsampleRgba4444LinePair, YuvToRgba4444, 2)
656UPSAMPLE_FUNC(UpsampleRgb565LinePair, YuvToRgb565, 2)
657#endif // WEBP_REDUCE_CSP
658
659//------------------------------------------------------------------------------
660// Entry point
661
662extern WebPUpsampleLinePairFunc WebPUpsamplers[/* MODE_LAST */];
663
664extern void WebPInitUpsamplersMSA(void);
665
666WEBP_TSAN_IGNORE_FUNCTION void WebPInitUpsamplersMSA(void) {
667 WebPUpsamplers[MODE_RGBA] = UpsampleRgbaLinePair;
668 WebPUpsamplers[MODE_BGRA] = UpsampleBgraLinePair;
669 WebPUpsamplers[MODE_rgbA] = UpsampleRgbaLinePair;
670 WebPUpsamplers[MODE_bgrA] = UpsampleBgraLinePair;
671#if !defined(WEBP_REDUCE_CSP)
672 WebPUpsamplers[MODE_RGB] = UpsampleRgbLinePair;
673 WebPUpsamplers[MODE_BGR] = UpsampleBgrLinePair;
674 WebPUpsamplers[MODE_ARGB] = UpsampleArgbLinePair;
675 WebPUpsamplers[MODE_Argb] = UpsampleArgbLinePair;
676 WebPUpsamplers[MODE_RGB_565] = UpsampleRgb565LinePair;
677 WebPUpsamplers[MODE_RGBA_4444] = UpsampleRgba4444LinePair;
678 WebPUpsamplers[MODE_rgbA_4444] = UpsampleRgba4444LinePair;
679#endif // WEBP_REDUCE_CSP
680}
681
682#endif // FANCY_UPSAMPLING
683
684#endif // WEBP_USE_MSA
685
686#if !(defined(FANCY_UPSAMPLING) && defined(WEBP_USE_MSA))
687WEBP_DSP_INIT_STUB(WebPInitUpsamplersMSA)
688#endif
689