1 /*
2 * Copyright 2012 The LibYuv Project Authors. All rights reserved.
3 *
4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
9 */
10
11 #include "libyuv/basic_types.h"
12 #include "libyuv/row.h"
13
14 #ifdef __cplusplus
15 namespace libyuv {
16 extern "C" {
17 #endif
18
19 // This module is for GCC MIPS DSPR2
20 #if !defined(LIBYUV_DISABLE_MIPS) && \
21 defined(__mips_dsp) && (__mips_dsp_rev >= 2) && \
22 (_MIPS_SIM == _MIPS_SIM_ABI32)
23
ScaleRowDown2_DSPR2(const uint8 * src_ptr,ptrdiff_t src_stride,uint8 * dst,int dst_width)24 void ScaleRowDown2_DSPR2(const uint8* src_ptr, ptrdiff_t src_stride,
25 uint8* dst, int dst_width) {
26 __asm__ __volatile__(
27 ".set push \n"
28 ".set noreorder \n"
29
30 "srl $t9, %[dst_width], 4 \n" // iterations -> by 16
31 "beqz $t9, 2f \n"
32 " nop \n"
33
34 "1: \n"
35 "lw $t0, 0(%[src_ptr]) \n" // |3|2|1|0|
36 "lw $t1, 4(%[src_ptr]) \n" // |7|6|5|4|
37 "lw $t2, 8(%[src_ptr]) \n" // |11|10|9|8|
38 "lw $t3, 12(%[src_ptr]) \n" // |15|14|13|12|
39 "lw $t4, 16(%[src_ptr]) \n" // |19|18|17|16|
40 "lw $t5, 20(%[src_ptr]) \n" // |23|22|21|20|
41 "lw $t6, 24(%[src_ptr]) \n" // |27|26|25|24|
42 "lw $t7, 28(%[src_ptr]) \n" // |31|30|29|28|
43 // TODO(fbarchard): Use odd pixels instead of even.
44 "precr.qb.ph $t8, $t1, $t0 \n" // |6|4|2|0|
45 "precr.qb.ph $t0, $t3, $t2 \n" // |14|12|10|8|
46 "precr.qb.ph $t1, $t5, $t4 \n" // |22|20|18|16|
47 "precr.qb.ph $t2, $t7, $t6 \n" // |30|28|26|24|
48 "addiu %[src_ptr], %[src_ptr], 32 \n"
49 "addiu $t9, $t9, -1 \n"
50 "sw $t8, 0(%[dst]) \n"
51 "sw $t0, 4(%[dst]) \n"
52 "sw $t1, 8(%[dst]) \n"
53 "sw $t2, 12(%[dst]) \n"
54 "bgtz $t9, 1b \n"
55 " addiu %[dst], %[dst], 16 \n"
56
57 "2: \n"
58 "andi $t9, %[dst_width], 0xf \n" // residue
59 "beqz $t9, 3f \n"
60 " nop \n"
61
62 "21: \n"
63 "lbu $t0, 0(%[src_ptr]) \n"
64 "addiu %[src_ptr], %[src_ptr], 2 \n"
65 "addiu $t9, $t9, -1 \n"
66 "sb $t0, 0(%[dst]) \n"
67 "bgtz $t9, 21b \n"
68 " addiu %[dst], %[dst], 1 \n"
69
70 "3: \n"
71 ".set pop \n"
72 : [src_ptr] "+r" (src_ptr),
73 [dst] "+r" (dst)
74 : [dst_width] "r" (dst_width)
75 : "t0", "t1", "t2", "t3", "t4", "t5",
76 "t6", "t7", "t8", "t9"
77 );
78 }
79
ScaleRowDown2Box_DSPR2(const uint8 * src_ptr,ptrdiff_t src_stride,uint8 * dst,int dst_width)80 void ScaleRowDown2Box_DSPR2(const uint8* src_ptr, ptrdiff_t src_stride,
81 uint8* dst, int dst_width) {
82 const uint8* t = src_ptr + src_stride;
83
84 __asm__ __volatile__ (
85 ".set push \n"
86 ".set noreorder \n"
87
88 "srl $t9, %[dst_width], 3 \n" // iterations -> step 8
89 "bltz $t9, 2f \n"
90 " nop \n"
91
92 "1: \n"
93 "lw $t0, 0(%[src_ptr]) \n" // |3|2|1|0|
94 "lw $t1, 4(%[src_ptr]) \n" // |7|6|5|4|
95 "lw $t2, 8(%[src_ptr]) \n" // |11|10|9|8|
96 "lw $t3, 12(%[src_ptr]) \n" // |15|14|13|12|
97 "lw $t4, 0(%[t]) \n" // |19|18|17|16|
98 "lw $t5, 4(%[t]) \n" // |23|22|21|20|
99 "lw $t6, 8(%[t]) \n" // |27|26|25|24|
100 "lw $t7, 12(%[t]) \n" // |31|30|29|28|
101 "addiu $t9, $t9, -1 \n"
102 "srl $t8, $t0, 16 \n" // |X|X|3|2|
103 "ins $t0, $t4, 16, 16 \n" // |17|16|1|0|
104 "ins $t4, $t8, 0, 16 \n" // |19|18|3|2|
105 "raddu.w.qb $t0, $t0 \n" // |17+16+1+0|
106 "raddu.w.qb $t4, $t4 \n" // |19+18+3+2|
107 "shra_r.w $t0, $t0, 2 \n" // |t0+2|>>2
108 "shra_r.w $t4, $t4, 2 \n" // |t4+2|>>2
109 "srl $t8, $t1, 16 \n" // |X|X|7|6|
110 "ins $t1, $t5, 16, 16 \n" // |21|20|5|4|
111 "ins $t5, $t8, 0, 16 \n" // |22|23|7|6|
112 "raddu.w.qb $t1, $t1 \n" // |21+20+5+4|
113 "raddu.w.qb $t5, $t5 \n" // |23+22+7+6|
114 "shra_r.w $t1, $t1, 2 \n" // |t1+2|>>2
115 "shra_r.w $t5, $t5, 2 \n" // |t5+2|>>2
116 "srl $t8, $t2, 16 \n" // |X|X|11|10|
117 "ins $t2, $t6, 16, 16 \n" // |25|24|9|8|
118 "ins $t6, $t8, 0, 16 \n" // |27|26|11|10|
119 "raddu.w.qb $t2, $t2 \n" // |25+24+9+8|
120 "raddu.w.qb $t6, $t6 \n" // |27+26+11+10|
121 "shra_r.w $t2, $t2, 2 \n" // |t2+2|>>2
122 "shra_r.w $t6, $t6, 2 \n" // |t5+2|>>2
123 "srl $t8, $t3, 16 \n" // |X|X|15|14|
124 "ins $t3, $t7, 16, 16 \n" // |29|28|13|12|
125 "ins $t7, $t8, 0, 16 \n" // |31|30|15|14|
126 "raddu.w.qb $t3, $t3 \n" // |29+28+13+12|
127 "raddu.w.qb $t7, $t7 \n" // |31+30+15+14|
128 "shra_r.w $t3, $t3, 2 \n" // |t3+2|>>2
129 "shra_r.w $t7, $t7, 2 \n" // |t7+2|>>2
130 "addiu %[src_ptr], %[src_ptr], 16 \n"
131 "addiu %[t], %[t], 16 \n"
132 "sb $t0, 0(%[dst]) \n"
133 "sb $t4, 1(%[dst]) \n"
134 "sb $t1, 2(%[dst]) \n"
135 "sb $t5, 3(%[dst]) \n"
136 "sb $t2, 4(%[dst]) \n"
137 "sb $t6, 5(%[dst]) \n"
138 "sb $t3, 6(%[dst]) \n"
139 "sb $t7, 7(%[dst]) \n"
140 "bgtz $t9, 1b \n"
141 " addiu %[dst], %[dst], 8 \n"
142
143 "2: \n"
144 "andi $t9, %[dst_width], 0x7 \n" // x = residue
145 "beqz $t9, 3f \n"
146 " nop \n"
147
148 "21: \n"
149 "lwr $t1, 0(%[src_ptr]) \n"
150 "lwl $t1, 3(%[src_ptr]) \n"
151 "lwr $t2, 0(%[t]) \n"
152 "lwl $t2, 3(%[t]) \n"
153 "srl $t8, $t1, 16 \n"
154 "ins $t1, $t2, 16, 16 \n"
155 "ins $t2, $t8, 0, 16 \n"
156 "raddu.w.qb $t1, $t1 \n"
157 "raddu.w.qb $t2, $t2 \n"
158 "shra_r.w $t1, $t1, 2 \n"
159 "shra_r.w $t2, $t2, 2 \n"
160 "sb $t1, 0(%[dst]) \n"
161 "sb $t2, 1(%[dst]) \n"
162 "addiu %[src_ptr], %[src_ptr], 4 \n"
163 "addiu $t9, $t9, -2 \n"
164 "addiu %[t], %[t], 4 \n"
165 "bgtz $t9, 21b \n"
166 " addiu %[dst], %[dst], 2 \n"
167
168 "3: \n"
169 ".set pop \n"
170
171 : [src_ptr] "+r" (src_ptr),
172 [dst] "+r" (dst), [t] "+r" (t)
173 : [dst_width] "r" (dst_width)
174 : "t0", "t1", "t2", "t3", "t4", "t5",
175 "t6", "t7", "t8", "t9"
176 );
177 }
178
ScaleRowDown4_DSPR2(const uint8 * src_ptr,ptrdiff_t src_stride,uint8 * dst,int dst_width)179 void ScaleRowDown4_DSPR2(const uint8* src_ptr, ptrdiff_t src_stride,
180 uint8* dst, int dst_width) {
181 __asm__ __volatile__ (
182 ".set push \n"
183 ".set noreorder \n"
184
185 "srl $t9, %[dst_width], 3 \n"
186 "beqz $t9, 2f \n"
187 " nop \n"
188
189 "1: \n"
190 "lw $t1, 0(%[src_ptr]) \n" // |3|2|1|0|
191 "lw $t2, 4(%[src_ptr]) \n" // |7|6|5|4|
192 "lw $t3, 8(%[src_ptr]) \n" // |11|10|9|8|
193 "lw $t4, 12(%[src_ptr]) \n" // |15|14|13|12|
194 "lw $t5, 16(%[src_ptr]) \n" // |19|18|17|16|
195 "lw $t6, 20(%[src_ptr]) \n" // |23|22|21|20|
196 "lw $t7, 24(%[src_ptr]) \n" // |27|26|25|24|
197 "lw $t8, 28(%[src_ptr]) \n" // |31|30|29|28|
198 "precr.qb.ph $t1, $t2, $t1 \n" // |6|4|2|0|
199 "precr.qb.ph $t2, $t4, $t3 \n" // |14|12|10|8|
200 "precr.qb.ph $t5, $t6, $t5 \n" // |22|20|18|16|
201 "precr.qb.ph $t6, $t8, $t7 \n" // |30|28|26|24|
202 "precr.qb.ph $t1, $t2, $t1 \n" // |12|8|4|0|
203 "precr.qb.ph $t5, $t6, $t5 \n" // |28|24|20|16|
204 "addiu %[src_ptr], %[src_ptr], 32 \n"
205 "addiu $t9, $t9, -1 \n"
206 "sw $t1, 0(%[dst]) \n"
207 "sw $t5, 4(%[dst]) \n"
208 "bgtz $t9, 1b \n"
209 " addiu %[dst], %[dst], 8 \n"
210
211 "2: \n"
212 "andi $t9, %[dst_width], 7 \n" // residue
213 "beqz $t9, 3f \n"
214 " nop \n"
215
216 "21: \n"
217 "lbu $t1, 0(%[src_ptr]) \n"
218 "addiu %[src_ptr], %[src_ptr], 4 \n"
219 "addiu $t9, $t9, -1 \n"
220 "sb $t1, 0(%[dst]) \n"
221 "bgtz $t9, 21b \n"
222 " addiu %[dst], %[dst], 1 \n"
223
224 "3: \n"
225 ".set pop \n"
226 : [src_ptr] "+r" (src_ptr),
227 [dst] "+r" (dst)
228 : [dst_width] "r" (dst_width)
229 : "t1", "t2", "t3", "t4", "t5",
230 "t6", "t7", "t8", "t9"
231 );
232 }
233
ScaleRowDown4Box_DSPR2(const uint8 * src_ptr,ptrdiff_t src_stride,uint8 * dst,int dst_width)234 void ScaleRowDown4Box_DSPR2(const uint8* src_ptr, ptrdiff_t src_stride,
235 uint8* dst, int dst_width) {
236 intptr_t stride = src_stride;
237 const uint8* s1 = src_ptr + stride;
238 const uint8* s2 = s1 + stride;
239 const uint8* s3 = s2 + stride;
240
241 __asm__ __volatile__ (
242 ".set push \n"
243 ".set noreorder \n"
244
245 "srl $t9, %[dst_width], 1 \n"
246 "andi $t8, %[dst_width], 1 \n"
247
248 "1: \n"
249 "lw $t0, 0(%[src_ptr]) \n" // |3|2|1|0|
250 "lw $t1, 0(%[s1]) \n" // |7|6|5|4|
251 "lw $t2, 0(%[s2]) \n" // |11|10|9|8|
252 "lw $t3, 0(%[s3]) \n" // |15|14|13|12|
253 "lw $t4, 4(%[src_ptr]) \n" // |19|18|17|16|
254 "lw $t5, 4(%[s1]) \n" // |23|22|21|20|
255 "lw $t6, 4(%[s2]) \n" // |27|26|25|24|
256 "lw $t7, 4(%[s3]) \n" // |31|30|29|28|
257 "raddu.w.qb $t0, $t0 \n" // |3 + 2 + 1 + 0|
258 "raddu.w.qb $t1, $t1 \n" // |7 + 6 + 5 + 4|
259 "raddu.w.qb $t2, $t2 \n" // |11 + 10 + 9 + 8|
260 "raddu.w.qb $t3, $t3 \n" // |15 + 14 + 13 + 12|
261 "raddu.w.qb $t4, $t4 \n" // |19 + 18 + 17 + 16|
262 "raddu.w.qb $t5, $t5 \n" // |23 + 22 + 21 + 20|
263 "raddu.w.qb $t6, $t6 \n" // |27 + 26 + 25 + 24|
264 "raddu.w.qb $t7, $t7 \n" // |31 + 30 + 29 + 28|
265 "add $t0, $t0, $t1 \n"
266 "add $t1, $t2, $t3 \n"
267 "add $t0, $t0, $t1 \n"
268 "add $t4, $t4, $t5 \n"
269 "add $t6, $t6, $t7 \n"
270 "add $t4, $t4, $t6 \n"
271 "shra_r.w $t0, $t0, 4 \n"
272 "shra_r.w $t4, $t4, 4 \n"
273 "sb $t0, 0(%[dst]) \n"
274 "sb $t4, 1(%[dst]) \n"
275 "addiu %[src_ptr], %[src_ptr], 8 \n"
276 "addiu %[s1], %[s1], 8 \n"
277 "addiu %[s2], %[s2], 8 \n"
278 "addiu %[s3], %[s3], 8 \n"
279 "addiu $t9, $t9, -1 \n"
280 "bgtz $t9, 1b \n"
281 " addiu %[dst], %[dst], 2 \n"
282 "beqz $t8, 2f \n"
283 " nop \n"
284
285 "lw $t0, 0(%[src_ptr]) \n" // |3|2|1|0|
286 "lw $t1, 0(%[s1]) \n" // |7|6|5|4|
287 "lw $t2, 0(%[s2]) \n" // |11|10|9|8|
288 "lw $t3, 0(%[s3]) \n" // |15|14|13|12|
289 "raddu.w.qb $t0, $t0 \n" // |3 + 2 + 1 + 0|
290 "raddu.w.qb $t1, $t1 \n" // |7 + 6 + 5 + 4|
291 "raddu.w.qb $t2, $t2 \n" // |11 + 10 + 9 + 8|
292 "raddu.w.qb $t3, $t3 \n" // |15 + 14 + 13 + 12|
293 "add $t0, $t0, $t1 \n"
294 "add $t1, $t2, $t3 \n"
295 "add $t0, $t0, $t1 \n"
296 "shra_r.w $t0, $t0, 4 \n"
297 "sb $t0, 0(%[dst]) \n"
298
299 "2: \n"
300 ".set pop \n"
301
302 : [src_ptr] "+r" (src_ptr),
303 [dst] "+r" (dst),
304 [s1] "+r" (s1),
305 [s2] "+r" (s2),
306 [s3] "+r" (s3)
307 : [dst_width] "r" (dst_width)
308 : "t0", "t1", "t2", "t3", "t4", "t5",
309 "t6","t7", "t8", "t9"
310 );
311 }
312
ScaleRowDown34_DSPR2(const uint8 * src_ptr,ptrdiff_t src_stride,uint8 * dst,int dst_width)313 void ScaleRowDown34_DSPR2(const uint8* src_ptr, ptrdiff_t src_stride,
314 uint8* dst, int dst_width) {
315 __asm__ __volatile__ (
316 ".set push \n"
317 ".set noreorder \n"
318 "1: \n"
319 "lw $t1, 0(%[src_ptr]) \n" // |3|2|1|0|
320 "lw $t2, 4(%[src_ptr]) \n" // |7|6|5|4|
321 "lw $t3, 8(%[src_ptr]) \n" // |11|10|9|8|
322 "lw $t4, 12(%[src_ptr]) \n" // |15|14|13|12|
323 "lw $t5, 16(%[src_ptr]) \n" // |19|18|17|16|
324 "lw $t6, 20(%[src_ptr]) \n" // |23|22|21|20|
325 "lw $t7, 24(%[src_ptr]) \n" // |27|26|25|24|
326 "lw $t8, 28(%[src_ptr]) \n" // |31|30|29|28|
327 "precrq.qb.ph $t0, $t2, $t4 \n" // |7|5|15|13|
328 "precrq.qb.ph $t9, $t6, $t8 \n" // |23|21|31|30|
329 "addiu %[dst_width], %[dst_width], -24 \n"
330 "ins $t1, $t1, 8, 16 \n" // |3|1|0|X|
331 "ins $t4, $t0, 8, 16 \n" // |X|15|13|12|
332 "ins $t5, $t5, 8, 16 \n" // |19|17|16|X|
333 "ins $t8, $t9, 8, 16 \n" // |X|31|29|28|
334 "addiu %[src_ptr], %[src_ptr], 32 \n"
335 "packrl.ph $t0, $t3, $t0 \n" // |9|8|7|5|
336 "packrl.ph $t9, $t7, $t9 \n" // |25|24|23|21|
337 "prepend $t1, $t2, 8 \n" // |4|3|1|0|
338 "prepend $t3, $t4, 24 \n" // |15|13|12|11|
339 "prepend $t5, $t6, 8 \n" // |20|19|17|16|
340 "prepend $t7, $t8, 24 \n" // |31|29|28|27|
341 "sw $t1, 0(%[dst]) \n"
342 "sw $t0, 4(%[dst]) \n"
343 "sw $t3, 8(%[dst]) \n"
344 "sw $t5, 12(%[dst]) \n"
345 "sw $t9, 16(%[dst]) \n"
346 "sw $t7, 20(%[dst]) \n"
347 "bnez %[dst_width], 1b \n"
348 " addiu %[dst], %[dst], 24 \n"
349 ".set pop \n"
350 : [src_ptr] "+r" (src_ptr),
351 [dst] "+r" (dst),
352 [dst_width] "+r" (dst_width)
353 :
354 : "t0", "t1", "t2", "t3", "t4", "t5",
355 "t6","t7", "t8", "t9"
356 );
357 }
358
ScaleRowDown34_0_Box_DSPR2(const uint8 * src_ptr,ptrdiff_t src_stride,uint8 * d,int dst_width)359 void ScaleRowDown34_0_Box_DSPR2(const uint8* src_ptr, ptrdiff_t src_stride,
360 uint8* d, int dst_width) {
361 __asm__ __volatile__ (
362 ".set push \n"
363 ".set noreorder \n"
364 "repl.ph $t3, 3 \n" // 0x00030003
365
366 "1: \n"
367 "lw $t0, 0(%[src_ptr]) \n" // |S3|S2|S1|S0|
368 "lwx $t1, %[src_stride](%[src_ptr]) \n" // |T3|T2|T1|T0|
369 "rotr $t2, $t0, 8 \n" // |S0|S3|S2|S1|
370 "rotr $t6, $t1, 8 \n" // |T0|T3|T2|T1|
371 "muleu_s.ph.qbl $t4, $t2, $t3 \n" // |S0*3|S3*3|
372 "muleu_s.ph.qbl $t5, $t6, $t3 \n" // |T0*3|T3*3|
373 "andi $t0, $t2, 0xFFFF \n" // |0|0|S2|S1|
374 "andi $t1, $t6, 0xFFFF \n" // |0|0|T2|T1|
375 "raddu.w.qb $t0, $t0 \n"
376 "raddu.w.qb $t1, $t1 \n"
377 "shra_r.w $t0, $t0, 1 \n"
378 "shra_r.w $t1, $t1, 1 \n"
379 "preceu.ph.qbr $t2, $t2 \n" // |0|S2|0|S1|
380 "preceu.ph.qbr $t6, $t6 \n" // |0|T2|0|T1|
381 "rotr $t2, $t2, 16 \n" // |0|S1|0|S2|
382 "rotr $t6, $t6, 16 \n" // |0|T1|0|T2|
383 "addu.ph $t2, $t2, $t4 \n"
384 "addu.ph $t6, $t6, $t5 \n"
385 "sll $t5, $t0, 1 \n"
386 "add $t0, $t5, $t0 \n"
387 "shra_r.ph $t2, $t2, 2 \n"
388 "shra_r.ph $t6, $t6, 2 \n"
389 "shll.ph $t4, $t2, 1 \n"
390 "addq.ph $t4, $t4, $t2 \n"
391 "addu $t0, $t0, $t1 \n"
392 "addiu %[src_ptr], %[src_ptr], 4 \n"
393 "shra_r.w $t0, $t0, 2 \n"
394 "addu.ph $t6, $t6, $t4 \n"
395 "shra_r.ph $t6, $t6, 2 \n"
396 "srl $t1, $t6, 16 \n"
397 "addiu %[dst_width], %[dst_width], -3 \n"
398 "sb $t1, 0(%[d]) \n"
399 "sb $t0, 1(%[d]) \n"
400 "sb $t6, 2(%[d]) \n"
401 "bgtz %[dst_width], 1b \n"
402 " addiu %[d], %[d], 3 \n"
403 "3: \n"
404 ".set pop \n"
405 : [src_ptr] "+r" (src_ptr),
406 [src_stride] "+r" (src_stride),
407 [d] "+r" (d),
408 [dst_width] "+r" (dst_width)
409 :
410 : "t0", "t1", "t2", "t3",
411 "t4", "t5", "t6"
412 );
413 }
414
ScaleRowDown34_1_Box_DSPR2(const uint8 * src_ptr,ptrdiff_t src_stride,uint8 * d,int dst_width)415 void ScaleRowDown34_1_Box_DSPR2(const uint8* src_ptr, ptrdiff_t src_stride,
416 uint8* d, int dst_width) {
417 __asm__ __volatile__ (
418 ".set push \n"
419 ".set noreorder \n"
420 "repl.ph $t2, 3 \n" // 0x00030003
421
422 "1: \n"
423 "lw $t0, 0(%[src_ptr]) \n" // |S3|S2|S1|S0|
424 "lwx $t1, %[src_stride](%[src_ptr]) \n" // |T3|T2|T1|T0|
425 "rotr $t4, $t0, 8 \n" // |S0|S3|S2|S1|
426 "rotr $t6, $t1, 8 \n" // |T0|T3|T2|T1|
427 "muleu_s.ph.qbl $t3, $t4, $t2 \n" // |S0*3|S3*3|
428 "muleu_s.ph.qbl $t5, $t6, $t2 \n" // |T0*3|T3*3|
429 "andi $t0, $t4, 0xFFFF \n" // |0|0|S2|S1|
430 "andi $t1, $t6, 0xFFFF \n" // |0|0|T2|T1|
431 "raddu.w.qb $t0, $t0 \n"
432 "raddu.w.qb $t1, $t1 \n"
433 "shra_r.w $t0, $t0, 1 \n"
434 "shra_r.w $t1, $t1, 1 \n"
435 "preceu.ph.qbr $t4, $t4 \n" // |0|S2|0|S1|
436 "preceu.ph.qbr $t6, $t6 \n" // |0|T2|0|T1|
437 "rotr $t4, $t4, 16 \n" // |0|S1|0|S2|
438 "rotr $t6, $t6, 16 \n" // |0|T1|0|T2|
439 "addu.ph $t4, $t4, $t3 \n"
440 "addu.ph $t6, $t6, $t5 \n"
441 "shra_r.ph $t6, $t6, 2 \n"
442 "shra_r.ph $t4, $t4, 2 \n"
443 "addu.ph $t6, $t6, $t4 \n"
444 "addiu %[src_ptr], %[src_ptr], 4 \n"
445 "shra_r.ph $t6, $t6, 1 \n"
446 "addu $t0, $t0, $t1 \n"
447 "addiu %[dst_width], %[dst_width], -3 \n"
448 "shra_r.w $t0, $t0, 1 \n"
449 "srl $t1, $t6, 16 \n"
450 "sb $t1, 0(%[d]) \n"
451 "sb $t0, 1(%[d]) \n"
452 "sb $t6, 2(%[d]) \n"
453 "bgtz %[dst_width], 1b \n"
454 " addiu %[d], %[d], 3 \n"
455 "3: \n"
456 ".set pop \n"
457 : [src_ptr] "+r" (src_ptr),
458 [src_stride] "+r" (src_stride),
459 [d] "+r" (d),
460 [dst_width] "+r" (dst_width)
461 :
462 : "t0", "t1", "t2", "t3",
463 "t4", "t5", "t6"
464 );
465 }
466
ScaleRowDown38_DSPR2(const uint8 * src_ptr,ptrdiff_t src_stride,uint8 * dst,int dst_width)467 void ScaleRowDown38_DSPR2(const uint8* src_ptr, ptrdiff_t src_stride,
468 uint8* dst, int dst_width) {
469 __asm__ __volatile__ (
470 ".set push \n"
471 ".set noreorder \n"
472
473 "1: \n"
474 "lw $t0, 0(%[src_ptr]) \n" // |3|2|1|0|
475 "lw $t1, 4(%[src_ptr]) \n" // |7|6|5|4|
476 "lw $t2, 8(%[src_ptr]) \n" // |11|10|9|8|
477 "lw $t3, 12(%[src_ptr]) \n" // |15|14|13|12|
478 "lw $t4, 16(%[src_ptr]) \n" // |19|18|17|16|
479 "lw $t5, 20(%[src_ptr]) \n" // |23|22|21|20|
480 "lw $t6, 24(%[src_ptr]) \n" // |27|26|25|24|
481 "lw $t7, 28(%[src_ptr]) \n" // |31|30|29|28|
482 "wsbh $t0, $t0 \n" // |2|3|0|1|
483 "wsbh $t6, $t6 \n" // |26|27|24|25|
484 "srl $t0, $t0, 8 \n" // |X|2|3|0|
485 "srl $t3, $t3, 16 \n" // |X|X|15|14|
486 "srl $t5, $t5, 16 \n" // |X|X|23|22|
487 "srl $t7, $t7, 16 \n" // |X|X|31|30|
488 "ins $t1, $t2, 24, 8 \n" // |8|6|5|4|
489 "ins $t6, $t5, 0, 8 \n" // |26|27|24|22|
490 "ins $t1, $t0, 0, 16 \n" // |8|6|3|0|
491 "ins $t6, $t7, 24, 8 \n" // |30|27|24|22|
492 "prepend $t2, $t3, 24 \n" // |X|15|14|11|
493 "ins $t4, $t4, 16, 8 \n" // |19|16|17|X|
494 "ins $t4, $t2, 0, 16 \n" // |19|16|14|11|
495 "addiu %[src_ptr], %[src_ptr], 32 \n"
496 "addiu %[dst_width], %[dst_width], -12 \n"
497 "addiu $t8,%[dst_width], -12 \n"
498 "sw $t1, 0(%[dst]) \n"
499 "sw $t4, 4(%[dst]) \n"
500 "sw $t6, 8(%[dst]) \n"
501 "bgez $t8, 1b \n"
502 " addiu %[dst], %[dst], 12 \n"
503 ".set pop \n"
504 : [src_ptr] "+r" (src_ptr),
505 [dst] "+r" (dst),
506 [dst_width] "+r" (dst_width)
507 :
508 : "t0", "t1", "t2", "t3", "t4",
509 "t5", "t6", "t7", "t8"
510 );
511 }
512
ScaleRowDown38_2_Box_DSPR2(const uint8 * src_ptr,ptrdiff_t src_stride,uint8 * dst_ptr,int dst_width)513 void ScaleRowDown38_2_Box_DSPR2(const uint8* src_ptr, ptrdiff_t src_stride,
514 uint8* dst_ptr, int dst_width) {
515 intptr_t stride = src_stride;
516 const uint8* t = src_ptr + stride;
517 const int c = 0x2AAA;
518
519 __asm__ __volatile__ (
520 ".set push \n"
521 ".set noreorder \n"
522
523 "1: \n"
524 "lw $t0, 0(%[src_ptr]) \n" // |S3|S2|S1|S0|
525 "lw $t1, 4(%[src_ptr]) \n" // |S7|S6|S5|S4|
526 "lw $t2, 0(%[t]) \n" // |T3|T2|T1|T0|
527 "lw $t3, 4(%[t]) \n" // |T7|T6|T5|T4|
528 "rotr $t1, $t1, 16 \n" // |S5|S4|S7|S6|
529 "packrl.ph $t4, $t1, $t3 \n" // |S7|S6|T7|T6|
530 "packrl.ph $t5, $t3, $t1 \n" // |T5|T4|S5|S4|
531 "raddu.w.qb $t4, $t4 \n" // S7+S6+T7+T6
532 "raddu.w.qb $t5, $t5 \n" // T5+T4+S5+S4
533 "precrq.qb.ph $t6, $t0, $t2 \n" // |S3|S1|T3|T1|
534 "precrq.qb.ph $t6, $t6, $t6 \n" // |S3|T3|S3|T3|
535 "srl $t4, $t4, 2 \n" // t4 / 4
536 "srl $t6, $t6, 16 \n" // |0|0|S3|T3|
537 "raddu.w.qb $t6, $t6 \n" // 0+0+S3+T3
538 "addu $t6, $t5, $t6 \n"
539 "mul $t6, $t6, %[c] \n" // t6 * 0x2AAA
540 "sll $t0, $t0, 8 \n" // |S2|S1|S0|0|
541 "sll $t2, $t2, 8 \n" // |T2|T1|T0|0|
542 "raddu.w.qb $t0, $t0 \n" // S2+S1+S0+0
543 "raddu.w.qb $t2, $t2 \n" // T2+T1+T0+0
544 "addu $t0, $t0, $t2 \n"
545 "mul $t0, $t0, %[c] \n" // t0 * 0x2AAA
546 "addiu %[src_ptr], %[src_ptr], 8 \n"
547 "addiu %[t], %[t], 8 \n"
548 "addiu %[dst_width], %[dst_width], -3 \n"
549 "addiu %[dst_ptr], %[dst_ptr], 3 \n"
550 "srl $t6, $t6, 16 \n"
551 "srl $t0, $t0, 16 \n"
552 "sb $t4, -1(%[dst_ptr]) \n"
553 "sb $t6, -2(%[dst_ptr]) \n"
554 "bgtz %[dst_width], 1b \n"
555 " sb $t0, -3(%[dst_ptr]) \n"
556 ".set pop \n"
557 : [src_ptr] "+r" (src_ptr),
558 [dst_ptr] "+r" (dst_ptr),
559 [t] "+r" (t),
560 [dst_width] "+r" (dst_width)
561 : [c] "r" (c)
562 : "t0", "t1", "t2", "t3", "t4", "t5", "t6"
563 );
564 }
565
ScaleRowDown38_3_Box_DSPR2(const uint8 * src_ptr,ptrdiff_t src_stride,uint8 * dst_ptr,int dst_width)566 void ScaleRowDown38_3_Box_DSPR2(const uint8* src_ptr,
567 ptrdiff_t src_stride,
568 uint8* dst_ptr, int dst_width) {
569 intptr_t stride = src_stride;
570 const uint8* s1 = src_ptr + stride;
571 stride += stride;
572 const uint8* s2 = src_ptr + stride;
573 const int c1 = 0x1C71;
574 const int c2 = 0x2AAA;
575
576 __asm__ __volatile__ (
577 ".set push \n"
578 ".set noreorder \n"
579
580 "1: \n"
581 "lw $t0, 0(%[src_ptr]) \n" // |S3|S2|S1|S0|
582 "lw $t1, 4(%[src_ptr]) \n" // |S7|S6|S5|S4|
583 "lw $t2, 0(%[s1]) \n" // |T3|T2|T1|T0|
584 "lw $t3, 4(%[s1]) \n" // |T7|T6|T5|T4|
585 "lw $t4, 0(%[s2]) \n" // |R3|R2|R1|R0|
586 "lw $t5, 4(%[s2]) \n" // |R7|R6|R5|R4|
587 "rotr $t1, $t1, 16 \n" // |S5|S4|S7|S6|
588 "packrl.ph $t6, $t1, $t3 \n" // |S7|S6|T7|T6|
589 "raddu.w.qb $t6, $t6 \n" // S7+S6+T7+T6
590 "packrl.ph $t7, $t3, $t1 \n" // |T5|T4|S5|S4|
591 "raddu.w.qb $t7, $t7 \n" // T5+T4+S5+S4
592 "sll $t8, $t5, 16 \n" // |R5|R4|0|0|
593 "raddu.w.qb $t8, $t8 \n" // R5+R4
594 "addu $t7, $t7, $t8 \n"
595 "srl $t8, $t5, 16 \n" // |0|0|R7|R6|
596 "raddu.w.qb $t8, $t8 \n" // R7 + R6
597 "addu $t6, $t6, $t8 \n"
598 "mul $t6, $t6, %[c2] \n" // t6 * 0x2AAA
599 "precrq.qb.ph $t8, $t0, $t2 \n" // |S3|S1|T3|T1|
600 "precrq.qb.ph $t8, $t8, $t4 \n" // |S3|T3|R3|R1|
601 "srl $t8, $t8, 8 \n" // |0|S3|T3|R3|
602 "raddu.w.qb $t8, $t8 \n" // S3 + T3 + R3
603 "addu $t7, $t7, $t8 \n"
604 "mul $t7, $t7, %[c1] \n" // t7 * 0x1C71
605 "sll $t0, $t0, 8 \n" // |S2|S1|S0|0|
606 "sll $t2, $t2, 8 \n" // |T2|T1|T0|0|
607 "sll $t4, $t4, 8 \n" // |R2|R1|R0|0|
608 "raddu.w.qb $t0, $t0 \n"
609 "raddu.w.qb $t2, $t2 \n"
610 "raddu.w.qb $t4, $t4 \n"
611 "addu $t0, $t0, $t2 \n"
612 "addu $t0, $t0, $t4 \n"
613 "mul $t0, $t0, %[c1] \n" // t0 * 0x1C71
614 "addiu %[src_ptr], %[src_ptr], 8 \n"
615 "addiu %[s1], %[s1], 8 \n"
616 "addiu %[s2], %[s2], 8 \n"
617 "addiu %[dst_width], %[dst_width], -3 \n"
618 "addiu %[dst_ptr], %[dst_ptr], 3 \n"
619 "srl $t6, $t6, 16 \n"
620 "srl $t7, $t7, 16 \n"
621 "srl $t0, $t0, 16 \n"
622 "sb $t6, -1(%[dst_ptr]) \n"
623 "sb $t7, -2(%[dst_ptr]) \n"
624 "bgtz %[dst_width], 1b \n"
625 " sb $t0, -3(%[dst_ptr]) \n"
626 ".set pop \n"
627 : [src_ptr] "+r" (src_ptr),
628 [dst_ptr] "+r" (dst_ptr),
629 [s1] "+r" (s1),
630 [s2] "+r" (s2),
631 [dst_width] "+r" (dst_width)
632 : [c1] "r" (c1), [c2] "r" (c2)
633 : "t0", "t1", "t2", "t3", "t4",
634 "t5", "t6", "t7", "t8"
635 );
636 }
637
638 #endif // defined(__mips_dsp) && (__mips_dsp_rev >= 2)
639
640 #ifdef __cplusplus
641 } // extern "C"
642 } // namespace libyuv
643 #endif
644
645