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[chromium-blink-merge.git] / third_party / libwebp / dsp / dec_mips32.c
blob3e89ed37aae7de6423b099383e591395a54c1c97
1 // Copyright 2014 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 // MIPS version of dsp functions
11 //
12 // Author(s): Djordje Pesut (djordje.pesut@imgtec.com)
13 // Jovan Zelincevic (jovan.zelincevic@imgtec.com)
14
15 #include "./dsp.h"
16
17 #if defined(WEBP_USE_MIPS32)
18
19 static const int kC1 = 20091 + (1 << 16);
20 static const int kC2 = 35468;
21
22 static WEBP_INLINE int abs_mips32(int x) {
23 const int sign = x >> 31;
24 return (x ^ sign) - sign;
25 }
26
27 // 4 pixels in, 2 pixels out
28 static WEBP_INLINE void do_filter2(uint8_t* p, int step) {
29 const int p1 = p[-2 * step], p0 = p[-step], q0 = p[0], q1 = p[step];
30 const int a = 3 * (q0 - p0) + VP8ksclip1[p1 - q1];
31 const int a1 = VP8ksclip2[(a + 4) >> 3];
32 const int a2 = VP8ksclip2[(a + 3) >> 3];
33 p[-step] = VP8kclip1[p0 + a2];
34 p[ 0] = VP8kclip1[q0 - a1];
35 }
36
37 // 4 pixels in, 4 pixels out
38 static WEBP_INLINE void do_filter4(uint8_t* p, int step) {
39 const int p1 = p[-2 * step], p0 = p[-step], q0 = p[0], q1 = p[step];
40 const int a = 3 * (q0 - p0);
41 const int a1 = VP8ksclip2[(a + 4) >> 3];
42 const int a2 = VP8ksclip2[(a + 3) >> 3];
43 const int a3 = (a1 + 1) >> 1;
44 p[-2 * step] = VP8kclip1[p1 + a3];
45 p[- step] = VP8kclip1[p0 + a2];
46 p[ 0] = VP8kclip1[q0 - a1];
47 p[ step] = VP8kclip1[q1 - a3];
48 }
49
50 // 6 pixels in, 6 pixels out
51 static WEBP_INLINE void do_filter6(uint8_t* p, int step) {
52 const int p2 = p[-3 * step], p1 = p[-2 * step], p0 = p[-step];
53 const int q0 = p[0], q1 = p[step], q2 = p[2 * step];
54 const int a = VP8ksclip1[3 * (q0 - p0) + VP8ksclip1[p1 - q1]];
55 const int a1 = (27 * a + 63) >> 7; // eq. to ((3 * a + 7) * 9) >> 7
56 const int a2 = (18 * a + 63) >> 7; // eq. to ((2 * a + 7) * 9) >> 7
57 const int a3 = (9 * a + 63) >> 7; // eq. to ((1 * a + 7) * 9) >> 7
58 p[-3 * step] = VP8kclip1[p2 + a3];
59 p[-2 * step] = VP8kclip1[p1 + a2];
60 p[- step] = VP8kclip1[p0 + a1];
61 p[ 0] = VP8kclip1[q0 - a1];
62 p[ step] = VP8kclip1[q1 - a2];
63 p[ 2 * step] = VP8kclip1[q2 - a3];
64 }
65
66 static WEBP_INLINE int hev(const uint8_t* p, int step, int thresh) {
67 const int p1 = p[-2 * step], p0 = p[-step], q0 = p[0], q1 = p[step];
68 return (abs_mips32(p1 - p0) > thresh) || (abs_mips32(q1 - q0) > thresh);
69 }
70
71 static WEBP_INLINE int needs_filter(const uint8_t* p, int step, int thresh) {
72 const int p1 = p[-2 * step], p0 = p[-step], q0 = p[0], q1 = p[step];
73 return ((2 * abs_mips32(p0 - q0) + (abs_mips32(p1 - q1) >> 1)) <= thresh);
74 }
75
76 static WEBP_INLINE int needs_filter2(const uint8_t* p,
77 int step, int t, int it) {
78 const int p3 = p[-4 * step], p2 = p[-3 * step];
79 const int p1 = p[-2 * step], p0 = p[-step];
80 const int q0 = p[0], q1 = p[step], q2 = p[2 * step], q3 = p[3 * step];
81 if ((2 * abs_mips32(p0 - q0) + (abs_mips32(p1 - q1) >> 1)) > t) {
82 return 0;
83 }
84 return abs_mips32(p3 - p2) <= it && abs_mips32(p2 - p1) <= it &&
85 abs_mips32(p1 - p0) <= it && abs_mips32(q3 - q2) <= it &&
86 abs_mips32(q2 - q1) <= it && abs_mips32(q1 - q0) <= it;
87 }
88
89 static WEBP_INLINE void FilterLoop26(uint8_t* p,
90 int hstride, int vstride, int size,
91 int thresh, int ithresh, int hev_thresh) {
92 while (size-- > 0) {
93 if (needs_filter2(p, hstride, thresh, ithresh)) {
94 if (hev(p, hstride, hev_thresh)) {
95 do_filter2(p, hstride);
96 } else {
97 do_filter6(p, hstride);
98 }
99 }
100 p += vstride;
101 }
102 }
103
104 static WEBP_INLINE void FilterLoop24(uint8_t* p,
105 int hstride, int vstride, int size,
106 int thresh, int ithresh, int hev_thresh) {
107 while (size-- > 0) {
108 if (needs_filter2(p, hstride, thresh, ithresh)) {
109 if (hev(p, hstride, hev_thresh)) {
110 do_filter2(p, hstride);
111 } else {
112 do_filter4(p, hstride);
113 }
114 }
115 p += vstride;
116 }
117 }
118
119 // on macroblock edges
120 static void VFilter16(uint8_t* p, int stride,
121 int thresh, int ithresh, int hev_thresh) {
122 FilterLoop26(p, stride, 1, 16, thresh, ithresh, hev_thresh);
123 }
124
125 static void HFilter16(uint8_t* p, int stride,
126 int thresh, int ithresh, int hev_thresh) {
127 FilterLoop26(p, 1, stride, 16, thresh, ithresh, hev_thresh);
128 }
129
130 // 8-pixels wide variant, for chroma filtering
131 static void VFilter8(uint8_t* u, uint8_t* v, int stride,
132 int thresh, int ithresh, int hev_thresh) {
133 FilterLoop26(u, stride, 1, 8, thresh, ithresh, hev_thresh);
134 FilterLoop26(v, stride, 1, 8, thresh, ithresh, hev_thresh);
135 }
136
137 static void HFilter8(uint8_t* u, uint8_t* v, int stride,
138 int thresh, int ithresh, int hev_thresh) {
139 FilterLoop26(u, 1, stride, 8, thresh, ithresh, hev_thresh);
140 FilterLoop26(v, 1, stride, 8, thresh, ithresh, hev_thresh);
141 }
142
143 static void VFilter8i(uint8_t* u, uint8_t* v, int stride,
144 int thresh, int ithresh, int hev_thresh) {
145 FilterLoop24(u + 4 * stride, stride, 1, 8, thresh, ithresh, hev_thresh);
146 FilterLoop24(v + 4 * stride, stride, 1, 8, thresh, ithresh, hev_thresh);
147 }
148
149 static void HFilter8i(uint8_t* u, uint8_t* v, int stride,
150 int thresh, int ithresh, int hev_thresh) {
151 FilterLoop24(u + 4, 1, stride, 8, thresh, ithresh, hev_thresh);
152 FilterLoop24(v + 4, 1, stride, 8, thresh, ithresh, hev_thresh);
153 }
154
155 // on three inner edges
156 static void VFilter16i(uint8_t* p, int stride,
157 int thresh, int ithresh, int hev_thresh) {
158 int k;
159 for (k = 3; k > 0; --k) {
160 p += 4 * stride;
161 FilterLoop24(p, stride, 1, 16, thresh, ithresh, hev_thresh);
162 }
163 }
164
165 static void HFilter16i(uint8_t* p, int stride,
166 int thresh, int ithresh, int hev_thresh) {
167 int k;
168 for (k = 3; k > 0; --k) {
169 p += 4;
170 FilterLoop24(p, 1, stride, 16, thresh, ithresh, hev_thresh);
171 }
172 }
173
174 //------------------------------------------------------------------------------
175 // Simple In-loop filtering (Paragraph 15.2)
176
177 static void SimpleVFilter16(uint8_t* p, int stride, int thresh) {
178 int i;
179 for (i = 0; i < 16; ++i) {
180 if (needs_filter(p + i, stride, thresh)) {
181 do_filter2(p + i, stride);
182 }
183 }
184 }
185
186 static void SimpleHFilter16(uint8_t* p, int stride, int thresh) {
187 int i;
188 for (i = 0; i < 16; ++i) {
189 if (needs_filter(p + i * stride, 1, thresh)) {
190 do_filter2(p + i * stride, 1);
191 }
192 }
193 }
194
195 static void SimpleVFilter16i(uint8_t* p, int stride, int thresh) {
196 int k;
197 for (k = 3; k > 0; --k) {
198 p += 4 * stride;
199 SimpleVFilter16(p, stride, thresh);
200 }
201 }
202
203 static void SimpleHFilter16i(uint8_t* p, int stride, int thresh) {
204 int k;
205 for (k = 3; k > 0; --k) {
206 p += 4;
207 SimpleHFilter16(p, stride, thresh);
208 }
209 }
210
211 static void TransformOne(const int16_t* in, uint8_t* dst) {
212 int temp0, temp1, temp2, temp3, temp4;
213 int temp5, temp6, temp7, temp8, temp9;
214 int temp10, temp11, temp12, temp13, temp14;
215 int temp15, temp16, temp17, temp18;
216 int16_t* p_in = (int16_t*)in;
217
218 // loops unrolled and merged to avoid usage of tmp buffer
219 // and to reduce number of stalls. MUL macro is written
220 // in assembler and inlined
221 __asm__ volatile(
222 "lh %[temp0], 0(%[in]) \n\t"
223 "lh %[temp8], 16(%[in]) \n\t"
224 "lh %[temp4], 8(%[in]) \n\t"
225 "lh %[temp12], 24(%[in]) \n\t"
226 "addu %[temp16], %[temp0], %[temp8] \n\t"
227 "subu %[temp0], %[temp0], %[temp8] \n\t"
228 "mul %[temp8], %[temp4], %[kC2] \n\t"
229 "mul %[temp17], %[temp12], %[kC1] \n\t"
230 "mul %[temp4], %[temp4], %[kC1] \n\t"
231 "mul %[temp12], %[temp12], %[kC2] \n\t"
232 "lh %[temp1], 2(%[in]) \n\t"
233 "lh %[temp5], 10(%[in]) \n\t"
234 "lh %[temp9], 18(%[in]) \n\t"
235 "lh %[temp13], 26(%[in]) \n\t"
236 "sra %[temp8], %[temp8], 16 \n\t"
237 "sra %[temp17], %[temp17], 16 \n\t"
238 "sra %[temp4], %[temp4], 16 \n\t"
239 "sra %[temp12], %[temp12], 16 \n\t"
240 "lh %[temp2], 4(%[in]) \n\t"
241 "lh %[temp6], 12(%[in]) \n\t"
242 "lh %[temp10], 20(%[in]) \n\t"
243 "lh %[temp14], 28(%[in]) \n\t"
244 "subu %[temp17], %[temp8], %[temp17] \n\t"
245 "addu %[temp4], %[temp4], %[temp12] \n\t"
246 "addu %[temp8], %[temp16], %[temp4] \n\t"
247 "subu %[temp4], %[temp16], %[temp4] \n\t"
248 "addu %[temp16], %[temp1], %[temp9] \n\t"
249 "subu %[temp1], %[temp1], %[temp9] \n\t"
250 "lh %[temp3], 6(%[in]) \n\t"
251 "lh %[temp7], 14(%[in]) \n\t"
252 "lh %[temp11], 22(%[in]) \n\t"
253 "lh %[temp15], 30(%[in]) \n\t"
254 "addu %[temp12], %[temp0], %[temp17] \n\t"
255 "subu %[temp0], %[temp0], %[temp17] \n\t"
256 "mul %[temp9], %[temp5], %[kC2] \n\t"
257 "mul %[temp17], %[temp13], %[kC1] \n\t"
258 "mul %[temp5], %[temp5], %[kC1] \n\t"
259 "mul %[temp13], %[temp13], %[kC2] \n\t"
260 "sra %[temp9], %[temp9], 16 \n\t"
261 "sra %[temp17], %[temp17], 16 \n\t"
262 "subu %[temp17], %[temp9], %[temp17] \n\t"
263 "sra %[temp5], %[temp5], 16 \n\t"
264 "sra %[temp13], %[temp13], 16 \n\t"
265 "addu %[temp5], %[temp5], %[temp13] \n\t"
266 "addu %[temp13], %[temp1], %[temp17] \n\t"
267 "subu %[temp1], %[temp1], %[temp17] \n\t"
268 "mul %[temp17], %[temp14], %[kC1] \n\t"
269 "mul %[temp14], %[temp14], %[kC2] \n\t"
270 "addu %[temp9], %[temp16], %[temp5] \n\t"
271 "subu %[temp5], %[temp16], %[temp5] \n\t"
272 "addu %[temp16], %[temp2], %[temp10] \n\t"
273 "subu %[temp2], %[temp2], %[temp10] \n\t"
274 "mul %[temp10], %[temp6], %[kC2] \n\t"
275 "mul %[temp6], %[temp6], %[kC1] \n\t"
276 "sra %[temp17], %[temp17], 16 \n\t"
277 "sra %[temp14], %[temp14], 16 \n\t"
278 "sra %[temp10], %[temp10], 16 \n\t"
279 "sra %[temp6], %[temp6], 16 \n\t"
280 "subu %[temp17], %[temp10], %[temp17] \n\t"
281 "addu %[temp6], %[temp6], %[temp14] \n\t"
282 "addu %[temp10], %[temp16], %[temp6] \n\t"
283 "subu %[temp6], %[temp16], %[temp6] \n\t"
284 "addu %[temp14], %[temp2], %[temp17] \n\t"
285 "subu %[temp2], %[temp2], %[temp17] \n\t"
286 "mul %[temp17], %[temp15], %[kC1] \n\t"
287 "mul %[temp15], %[temp15], %[kC2] \n\t"
288 "addu %[temp16], %[temp3], %[temp11] \n\t"
289 "subu %[temp3], %[temp3], %[temp11] \n\t"
290 "mul %[temp11], %[temp7], %[kC2] \n\t"
291 "mul %[temp7], %[temp7], %[kC1] \n\t"
292 "addiu %[temp8], %[temp8], 4 \n\t"
293 "addiu %[temp12], %[temp12], 4 \n\t"
294 "addiu %[temp0], %[temp0], 4 \n\t"
295 "addiu %[temp4], %[temp4], 4 \n\t"
296 "sra %[temp17], %[temp17], 16 \n\t"
297 "sra %[temp15], %[temp15], 16 \n\t"
298 "sra %[temp11], %[temp11], 16 \n\t"
299 "sra %[temp7], %[temp7], 16 \n\t"
300 "subu %[temp17], %[temp11], %[temp17] \n\t"
301 "addu %[temp7], %[temp7], %[temp15] \n\t"
302 "addu %[temp15], %[temp3], %[temp17] \n\t"
303 "subu %[temp3], %[temp3], %[temp17] \n\t"
304 "addu %[temp11], %[temp16], %[temp7] \n\t"
305 "subu %[temp7], %[temp16], %[temp7] \n\t"
306 "addu %[temp16], %[temp8], %[temp10] \n\t"
307 "subu %[temp8], %[temp8], %[temp10] \n\t"
308 "mul %[temp10], %[temp9], %[kC2] \n\t"
309 "mul %[temp17], %[temp11], %[kC1] \n\t"
310 "mul %[temp9], %[temp9], %[kC1] \n\t"
311 "mul %[temp11], %[temp11], %[kC2] \n\t"
312 "sra %[temp10], %[temp10], 16 \n\t"
313 "sra %[temp17], %[temp17], 16 \n\t"
314 "sra %[temp9], %[temp9], 16 \n\t"
315 "sra %[temp11], %[temp11], 16 \n\t"
316 "subu %[temp17], %[temp10], %[temp17] \n\t"
317 "addu %[temp11], %[temp9], %[temp11] \n\t"
318 "addu %[temp10], %[temp12], %[temp14] \n\t"
319 "subu %[temp12], %[temp12], %[temp14] \n\t"
320 "mul %[temp14], %[temp13], %[kC2] \n\t"
321 "mul %[temp9], %[temp15], %[kC1] \n\t"
322 "mul %[temp13], %[temp13], %[kC1] \n\t"
323 "mul %[temp15], %[temp15], %[kC2] \n\t"
324 "sra %[temp14], %[temp14], 16 \n\t"
325 "sra %[temp9], %[temp9], 16 \n\t"
326 "sra %[temp13], %[temp13], 16 \n\t"
327 "sra %[temp15], %[temp15], 16 \n\t"
328 "subu %[temp9], %[temp14], %[temp9] \n\t"
329 "addu %[temp15], %[temp13], %[temp15] \n\t"
330 "addu %[temp14], %[temp0], %[temp2] \n\t"
331 "subu %[temp0], %[temp0], %[temp2] \n\t"
332 "mul %[temp2], %[temp1], %[kC2] \n\t"
333 "mul %[temp13], %[temp3], %[kC1] \n\t"
334 "mul %[temp1], %[temp1], %[kC1] \n\t"
335 "mul %[temp3], %[temp3], %[kC2] \n\t"
336 "sra %[temp2], %[temp2], 16 \n\t"
337 "sra %[temp13], %[temp13], 16 \n\t"
338 "sra %[temp1], %[temp1], 16 \n\t"
339 "sra %[temp3], %[temp3], 16 \n\t"
340 "subu %[temp13], %[temp2], %[temp13] \n\t"
341 "addu %[temp3], %[temp1], %[temp3] \n\t"
342 "addu %[temp2], %[temp4], %[temp6] \n\t"
343 "subu %[temp4], %[temp4], %[temp6] \n\t"
344 "mul %[temp6], %[temp5], %[kC2] \n\t"
345 "mul %[temp1], %[temp7], %[kC1] \n\t"
346 "mul %[temp5], %[temp5], %[kC1] \n\t"
347 "mul %[temp7], %[temp7], %[kC2] \n\t"
348 "sra %[temp6], %[temp6], 16 \n\t"
349 "sra %[temp1], %[temp1], 16 \n\t"
350 "sra %[temp5], %[temp5], 16 \n\t"
351 "sra %[temp7], %[temp7], 16 \n\t"
352 "subu %[temp1], %[temp6], %[temp1] \n\t"
353 "addu %[temp7], %[temp5], %[temp7] \n\t"
354 "addu %[temp5], %[temp16], %[temp11] \n\t"
355 "subu %[temp16], %[temp16], %[temp11] \n\t"
356 "addu %[temp11], %[temp8], %[temp17] \n\t"
357 "subu %[temp8], %[temp8], %[temp17] \n\t"
358 "sra %[temp5], %[temp5], 3 \n\t"
359 "sra %[temp16], %[temp16], 3 \n\t"
360 "sra %[temp11], %[temp11], 3 \n\t"
361 "sra %[temp8], %[temp8], 3 \n\t"
362 "addu %[temp17], %[temp10], %[temp15] \n\t"
363 "subu %[temp10], %[temp10], %[temp15] \n\t"
364 "addu %[temp15], %[temp12], %[temp9] \n\t"
365 "subu %[temp12], %[temp12], %[temp9] \n\t"
366 "sra %[temp17], %[temp17], 3 \n\t"
367 "sra %[temp10], %[temp10], 3 \n\t"
368 "sra %[temp15], %[temp15], 3 \n\t"
369 "sra %[temp12], %[temp12], 3 \n\t"
370 "addu %[temp9], %[temp14], %[temp3] \n\t"
371 "subu %[temp14], %[temp14], %[temp3] \n\t"
372 "addu %[temp3], %[temp0], %[temp13] \n\t"
373 "subu %[temp0], %[temp0], %[temp13] \n\t"
374 "sra %[temp9], %[temp9], 3 \n\t"
375 "sra %[temp14], %[temp14], 3 \n\t"
376 "sra %[temp3], %[temp3], 3 \n\t"
377 "sra %[temp0], %[temp0], 3 \n\t"
378 "addu %[temp13], %[temp2], %[temp7] \n\t"
379 "subu %[temp2], %[temp2], %[temp7] \n\t"
380 "addu %[temp7], %[temp4], %[temp1] \n\t"
381 "subu %[temp4], %[temp4], %[temp1] \n\t"
382 "sra %[temp13], %[temp13], 3 \n\t"
383 "sra %[temp2], %[temp2], 3 \n\t"
384 "sra %[temp7], %[temp7], 3 \n\t"
385 "sra %[temp4], %[temp4], 3 \n\t"
386 "addiu %[temp6], $zero, 255 \n\t"
387 "lbu %[temp1], 0(%[dst]) \n\t"
388 "addu %[temp1], %[temp1], %[temp5] \n\t"
389 "sra %[temp5], %[temp1], 8 \n\t"
390 "sra %[temp18], %[temp1], 31 \n\t"
391 "beqz %[temp5], 1f \n\t"
392 "xor %[temp1], %[temp1], %[temp1] \n\t"
393 "movz %[temp1], %[temp6], %[temp18] \n\t"
394 "1: \n\t"
395 "lbu %[temp18], 1(%[dst]) \n\t"
396 "sb %[temp1], 0(%[dst]) \n\t"
397 "addu %[temp18], %[temp18], %[temp11] \n\t"
398 "sra %[temp11], %[temp18], 8 \n\t"
399 "sra %[temp1], %[temp18], 31 \n\t"
400 "beqz %[temp11], 2f \n\t"
401 "xor %[temp18], %[temp18], %[temp18] \n\t"
402 "movz %[temp18], %[temp6], %[temp1] \n\t"
403 "2: \n\t"
404 "lbu %[temp1], 2(%[dst]) \n\t"
405 "sb %[temp18], 1(%[dst]) \n\t"
406 "addu %[temp1], %[temp1], %[temp8] \n\t"
407 "sra %[temp8], %[temp1], 8 \n\t"
408 "sra %[temp18], %[temp1], 31 \n\t"
409 "beqz %[temp8], 3f \n\t"
410 "xor %[temp1], %[temp1], %[temp1] \n\t"
411 "movz %[temp1], %[temp6], %[temp18] \n\t"
412 "3: \n\t"
413 "lbu %[temp18], 3(%[dst]) \n\t"
414 "sb %[temp1], 2(%[dst]) \n\t"
415 "addu %[temp18], %[temp18], %[temp16] \n\t"
416 "sra %[temp16], %[temp18], 8 \n\t"
417 "sra %[temp1], %[temp18], 31 \n\t"
418 "beqz %[temp16], 4f \n\t"
419 "xor %[temp18], %[temp18], %[temp18] \n\t"
420 "movz %[temp18], %[temp6], %[temp1] \n\t"
421 "4: \n\t"
422 "sb %[temp18], 3(%[dst]) \n\t"
423 "lbu %[temp5], 32(%[dst]) \n\t"
424 "lbu %[temp8], 33(%[dst]) \n\t"
425 "lbu %[temp11], 34(%[dst]) \n\t"
426 "lbu %[temp16], 35(%[dst]) \n\t"
427 "addu %[temp5], %[temp5], %[temp17] \n\t"
428 "addu %[temp8], %[temp8], %[temp15] \n\t"
429 "addu %[temp11], %[temp11], %[temp12] \n\t"
430 "addu %[temp16], %[temp16], %[temp10] \n\t"
431 "sra %[temp18], %[temp5], 8 \n\t"
432 "sra %[temp1], %[temp5], 31 \n\t"
433 "beqz %[temp18], 5f \n\t"
434 "xor %[temp5], %[temp5], %[temp5] \n\t"
435 "movz %[temp5], %[temp6], %[temp1] \n\t"
436 "5: \n\t"
437 "sra %[temp18], %[temp8], 8 \n\t"
438 "sra %[temp1], %[temp8], 31 \n\t"
439 "beqz %[temp18], 6f \n\t"
440 "xor %[temp8], %[temp8], %[temp8] \n\t"
441 "movz %[temp8], %[temp6], %[temp1] \n\t"
442 "6: \n\t"
443 "sra %[temp18], %[temp11], 8 \n\t"
444 "sra %[temp1], %[temp11], 31 \n\t"
445 "sra %[temp17], %[temp16], 8 \n\t"
446 "sra %[temp15], %[temp16], 31 \n\t"
447 "beqz %[temp18], 7f \n\t"
448 "xor %[temp11], %[temp11], %[temp11] \n\t"
449 "movz %[temp11], %[temp6], %[temp1] \n\t"
450 "7: \n\t"
451 "beqz %[temp17], 8f \n\t"
452 "xor %[temp16], %[temp16], %[temp16] \n\t"
453 "movz %[temp16], %[temp6], %[temp15] \n\t"
454 "8: \n\t"
455 "sb %[temp5], 32(%[dst]) \n\t"
456 "sb %[temp8], 33(%[dst]) \n\t"
457 "sb %[temp11], 34(%[dst]) \n\t"
458 "sb %[temp16], 35(%[dst]) \n\t"
459 "lbu %[temp5], 64(%[dst]) \n\t"
460 "lbu %[temp8], 65(%[dst]) \n\t"
461 "lbu %[temp11], 66(%[dst]) \n\t"
462 "lbu %[temp16], 67(%[dst]) \n\t"
463 "addu %[temp5], %[temp5], %[temp9] \n\t"
464 "addu %[temp8], %[temp8], %[temp3] \n\t"
465 "addu %[temp11], %[temp11], %[temp0] \n\t"
466 "addu %[temp16], %[temp16], %[temp14] \n\t"
467 "sra %[temp18], %[temp5], 8 \n\t"
468 "sra %[temp1], %[temp5], 31 \n\t"
469 "sra %[temp17], %[temp8], 8 \n\t"
470 "sra %[temp15], %[temp8], 31 \n\t"
471 "sra %[temp12], %[temp11], 8 \n\t"
472 "sra %[temp10], %[temp11], 31 \n\t"
473 "sra %[temp9], %[temp16], 8 \n\t"
474 "sra %[temp3], %[temp16], 31 \n\t"
475 "beqz %[temp18], 9f \n\t"
476 "xor %[temp5], %[temp5], %[temp5] \n\t"
477 "movz %[temp5], %[temp6], %[temp1] \n\t"
478 "9: \n\t"
479 "beqz %[temp17], 10f \n\t"
480 "xor %[temp8], %[temp8], %[temp8] \n\t"
481 "movz %[temp8], %[temp6], %[temp15] \n\t"
482 "10: \n\t"
483 "beqz %[temp12], 11f \n\t"
484 "xor %[temp11], %[temp11], %[temp11] \n\t"
485 "movz %[temp11], %[temp6], %[temp10] \n\t"
486 "11: \n\t"
487 "beqz %[temp9], 12f \n\t"
488 "xor %[temp16], %[temp16], %[temp16] \n\t"
489 "movz %[temp16], %[temp6], %[temp3] \n\t"
490 "12: \n\t"
491 "sb %[temp5], 64(%[dst]) \n\t"
492 "sb %[temp8], 65(%[dst]) \n\t"
493 "sb %[temp11], 66(%[dst]) \n\t"
494 "sb %[temp16], 67(%[dst]) \n\t"
495 "lbu %[temp5], 96(%[dst]) \n\t"
496 "lbu %[temp8], 97(%[dst]) \n\t"
497 "lbu %[temp11], 98(%[dst]) \n\t"
498 "lbu %[temp16], 99(%[dst]) \n\t"
499 "addu %[temp5], %[temp5], %[temp13] \n\t"
500 "addu %[temp8], %[temp8], %[temp7] \n\t"
501 "addu %[temp11], %[temp11], %[temp4] \n\t"
502 "addu %[temp16], %[temp16], %[temp2] \n\t"
503 "sra %[temp18], %[temp5], 8 \n\t"
504 "sra %[temp1], %[temp5], 31 \n\t"
505 "sra %[temp17], %[temp8], 8 \n\t"
506 "sra %[temp15], %[temp8], 31 \n\t"
507 "sra %[temp12], %[temp11], 8 \n\t"
508 "sra %[temp10], %[temp11], 31 \n\t"
509 "sra %[temp9], %[temp16], 8 \n\t"
510 "sra %[temp3], %[temp16], 31 \n\t"
511 "beqz %[temp18], 13f \n\t"
512 "xor %[temp5], %[temp5], %[temp5] \n\t"
513 "movz %[temp5], %[temp6], %[temp1] \n\t"
514 "13: \n\t"
515 "beqz %[temp17], 14f \n\t"
516 "xor %[temp8], %[temp8], %[temp8] \n\t"
517 "movz %[temp8], %[temp6], %[temp15] \n\t"
518 "14: \n\t"
519 "beqz %[temp12], 15f \n\t"
520 "xor %[temp11], %[temp11], %[temp11] \n\t"
521 "movz %[temp11], %[temp6], %[temp10] \n\t"
522 "15: \n\t"
523 "beqz %[temp9], 16f \n\t"
524 "xor %[temp16], %[temp16], %[temp16] \n\t"
525 "movz %[temp16], %[temp6], %[temp3] \n\t"
526 "16: \n\t"
527 "sb %[temp5], 96(%[dst]) \n\t"
528 "sb %[temp8], 97(%[dst]) \n\t"
529 "sb %[temp11], 98(%[dst]) \n\t"
530 "sb %[temp16], 99(%[dst]) \n\t"
531
532 : [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp2]"=&r"(temp2),
533 [temp3]"=&r"(temp3), [temp4]"=&r"(temp4), [temp5]"=&r"(temp5),
534 [temp6]"=&r"(temp6), [temp7]"=&r"(temp7), [temp8]"=&r"(temp8),
535 [temp9]"=&r"(temp9), [temp10]"=&r"(temp10), [temp11]"=&r"(temp11),
536 [temp12]"=&r"(temp12), [temp13]"=&r"(temp13), [temp14]"=&r"(temp14),
537 [temp15]"=&r"(temp15), [temp16]"=&r"(temp16), [temp17]"=&r"(temp17),
538 [temp18]"=&r"(temp18)
539 : [in]"r"(p_in), [kC1]"r"(kC1), [kC2]"r"(kC2), [dst]"r"(dst)
540 : "memory", "hi", "lo"
541 );
542 }
543
544 static void TransformTwo(const int16_t* in, uint8_t* dst, int do_two) {
545 TransformOne(in, dst);
546 if (do_two) {
547 TransformOne(in + 16, dst + 4);
548 }
549 }
550
551 #endif // WEBP_USE_MIPS32
552
553 //------------------------------------------------------------------------------
554 // Entry point
555
556 extern void VP8DspInitMIPS32(void);
557
558 void VP8DspInitMIPS32(void) {
559 #if defined(WEBP_USE_MIPS32)
560 VP8InitClipTables();
561
562 VP8Transform = TransformTwo;
563
564 VP8VFilter16 = VFilter16;
565 VP8HFilter16 = HFilter16;
566 VP8VFilter8 = VFilter8;
567 VP8HFilter8 = HFilter8;
568 VP8VFilter16i = VFilter16i;
569 VP8HFilter16i = HFilter16i;
570 VP8VFilter8i = VFilter8i;
571 VP8HFilter8i = HFilter8i;
572
573 VP8SimpleVFilter16 = SimpleVFilter16;
574 VP8SimpleHFilter16 = SimpleHFilter16;
575 VP8SimpleVFilter16i = SimpleVFilter16i;
576 VP8SimpleHFilter16i = SimpleHFilter16i;
577 #endif // WEBP_USE_MIPS32
578 }