1 /******************************************************************************
2  *
3  * Copyright (C) 2015 The Android Open Source Project
4  *
5  * Licensed under the Apache License, Version 2.0 (the "License");
6  * you may not use this file except in compliance with the License.
7  * You may obtain a copy of the License at:
8  *
9  * http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  *
17  *****************************************************************************
18  * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
19 */
20 /**
21  *******************************************************************************
22  * @file
23  *  ih264e_half_pel_ssse3.c
24  *
25  * @brief
26  *  Contains the x86 intrinsic function definitions for 6-tap vertical filter
27  *  and cascaded 2D filter used in motion estimation in H264 encoder.
28  *
29  * @author
30  *  Ittiam
31  *
32  * @par List of Functions:
33  *  ih264e_sixtapfilter_horz_ssse3
34  *  ih264e_sixtap_filter_2dvh_vert_ssse3
35  *
36  * @remarks
37  *  None
38  *
39  *******************************************************************************
40  */
41 
42 /*****************************************************************************/
43 /* File Includes                                                             */
44 /*****************************************************************************/
45 
46 /* System include files */
47 #include <stdio.h>
48 #include <assert.h>
49 #include <limits.h>
50 
51 /* User include files */
52 #include "ih264_typedefs.h"
53 #include "ithread.h"
54 #include "ih264_platform_macros.h"
55 #include "ih264_defs.h"
56 #include "ih264e_half_pel.h"
57 #include "ih264_macros.h"
58 #include "ih264e_debug.h"
59 #include "ih264_inter_pred_filters.h"
60 #include "ih264_mem_fns.h"
61 #include "ih264_padding.h"
62 #include "ih264_intra_pred_filters.h"
63 #include "ih264_deblk_edge_filters.h"
64 
65 
66 /*****************************************************************************/
67 /* Function Definitions                                                      */
68 /*****************************************************************************/
69 /*
70 *******************************************************************************
71 *
72 * @brief
73 *  Interprediction luma filter for horizontal input(Filter run for width = 17
74 *  and height =16)
75 *
76 * @par Description:
77 *  Applies a 6 tap horizontal filter .The output is  clipped to 8 bits sec.
78 *  8.4.2.2.1 titled "Luma sample interpolation process"
79 *
80 * @param[in] pu1_src
81 *  UWORD8 pointer to the source
82 *
83 * @param[out] pu1_dst
84 *  UWORD8 pointer to the destination
85 *
86 * @param[in] src_strd
87 *  integer source stride
88 *
89 * @param[in] dst_strd
90 *  integer destination stride
91 *
92 * @returns
93 *  None
94 *
95 * @remarks
96 *  None
97 *
98 *******************************************************************************
99 */
ih264e_sixtapfilter_horz_ssse3(UWORD8 * pu1_src,UWORD8 * pu1_dst,WORD32 src_strd,WORD32 dst_strd)100 void ih264e_sixtapfilter_horz_ssse3(UWORD8 *pu1_src,
101                                     UWORD8 *pu1_dst,
102                                     WORD32 src_strd,
103                                     WORD32 dst_strd)
104 {
105     WORD32 ht;
106     WORD32 tmp;
107 
108     __m128i src_r0_16x8b, src_r1_16x8b, src_r0_sht_16x8b, src_r1_sht_16x8b;
109     __m128i src_r0_t1_16x8b, src_r1_t1_16x8b;
110 
111     __m128i res_r0_t1_8x16b, res_r0_t2_8x16b, res_r0_t3_8x16b;
112     __m128i res_r1_t1_8x16b, res_r1_t2_8x16b, res_r1_t3_8x16b;
113 
114     __m128i coeff0_1_16x8b, coeff2_3_16x8b, coeff4_5_16x8b;
115     __m128i const_val16_8x16b;
116 
117     ht = 16;
118     pu1_src -= 2; // the filter input starts from x[-2] (till x[3])
119 
120     coeff0_1_16x8b = _mm_set1_epi32(0xFB01FB01); //c0 c1 c0 c1 c0 c1 c0 c1 c0 c1 c0 c1 c0 c1 c0 c1
121     coeff2_3_16x8b = _mm_set1_epi32(0x14141414); //c2 c3 c2 c3 c2 c3 c2 c3 c2 c3 c2 c3 c2 c3 c2 c3
122     coeff4_5_16x8b = _mm_set1_epi32(0x01FB01FB); //c4 c5 c4 c5 c4 c5 c4 c5 c4 c5 c4 c5 c4 c5 c4 c5
123                                                  //c0 = c5 = 1, c1 = c4 = -5, c2 = c3 = 20
124     const_val16_8x16b = _mm_set1_epi16(16);
125 
126     //Row0 : a0 a1 a2 a3 a4 a5 a6 a7 a8 a9.....
127     //Row0 :                         b0 b1 b2 b3 b4 b5 b6 b7 b8 b9.....
128     //b0 is same a8. Similarly other bn pixels are same as a(n+8) pixels.
129 
130     do
131     {
132         src_r0_16x8b = _mm_loadu_si128((__m128i *)pu1_src);                     //a0 a1 a2 a3 a4 a5 a6 a7 a8 a9....a15
133         src_r1_16x8b = _mm_loadu_si128((__m128i *)(pu1_src + 8));               //b0 b1 b2 b3 b4 b5 b6 b7 b8 b9....b15
134 
135         src_r0_sht_16x8b = _mm_srli_si128(src_r0_16x8b, 1);                      //a1 a2 a3 a4 a5 a6 a7 a8 a9....a15 0
136         src_r1_sht_16x8b = _mm_srli_si128(src_r1_16x8b, 1);                      //b1 b2 b3 b4 b5 b6 b7 b8 b9....b15 0
137 
138         src_r0_t1_16x8b = _mm_unpacklo_epi8(src_r0_16x8b, src_r0_sht_16x8b);     //a0 a1 a1 a2 a2 a3 a3 a4 a4 a5 a5 a6 a6 a7 a7 a8
139         src_r1_t1_16x8b = _mm_unpacklo_epi8(src_r1_16x8b, src_r1_sht_16x8b);     //b0 b1 b1 b2 b2 b3 b3 b4 b4 b5 b5 b6 b6 b7 b7 b8
140 
141         res_r0_t1_8x16b = _mm_maddubs_epi16(src_r0_t1_16x8b, coeff0_1_16x8b);    //a0*c0+a1*c1 a1*c0+a2*c1 a2*c0+a3*c1 a3*c0+a4*c1
142                                                                                  //a4*c0+a5*c1 a5*c0+a6*c1 a6*c0+a7*c1 a7*c0+a8*c1
143         res_r1_t1_8x16b = _mm_maddubs_epi16(src_r1_t1_16x8b, coeff0_1_16x8b);    //b0*c0+b1*c1 b1*c0+b2*c1 b2*c0+b3*c1 b3*c0+b4*c1
144                                                                                  //b4*c0+b5*c1 b5*c0+b6*c1 b6*c0+b7*c1 b7*c0+b8*c1
145 
146         src_r0_16x8b = _mm_srli_si128(src_r0_16x8b, 2);                          //a2 a3 a4 a5 a6 a7 a8 a9....a15 0 0
147         src_r1_16x8b = _mm_srli_si128(src_r1_16x8b, 2);                          //b2 b3 b4 b5 b6 b7 b8 b9....b15 0 0
148 
149         src_r0_sht_16x8b = _mm_srli_si128(src_r0_sht_16x8b, 2);                  //a3 a4 a5 a6 a7 a8 a9....a15 0  0  0
150         src_r1_sht_16x8b = _mm_srli_si128(src_r1_sht_16x8b, 2);                  //b3 b4 b5 b6 b7 b8 b9....b15 0  0  0
151 
152         src_r0_t1_16x8b = _mm_unpacklo_epi8(src_r0_16x8b, src_r0_sht_16x8b);     //a2 a3 a3 a4 a4 a5 a5 a6 a6 a7 a7 a8 a8 a9 a9 a10
153         src_r1_t1_16x8b = _mm_unpacklo_epi8(src_r1_16x8b, src_r1_sht_16x8b);     //b2 b3 b3 b4 b4 b5 b5 b6 b6 b7 b7 b8 a8 a9 a9 a10
154 
155         res_r0_t2_8x16b = _mm_maddubs_epi16(src_r0_t1_16x8b, coeff2_3_16x8b);    //a2*c2+a3*c3 a3*c2+a4*c3 a4*c2+a5*c3 a5*c2+a6*c3
156                                                                                  //a6*c2+a7*c3 a7*c2+a8*c3 a8*c2+a9*c3 a9*c2+a10*c3
157         res_r1_t2_8x16b = _mm_maddubs_epi16(src_r1_t1_16x8b, coeff2_3_16x8b);    //b2*c2+b3*c3 b3*c2+b4*c3 b2*c4+b5*c3 b5*c2+b6*c3
158                                                                                  //b6*c2+b7*c3 b7*c2+b8*c3 b8*c2+b9*c3 b9*c2+b10*c3
159 
160         src_r0_16x8b = _mm_srli_si128(src_r0_16x8b, 2);                          //a4 a5 a6 a7 a8 a9....a15 0  0  0  0
161         src_r1_16x8b = _mm_srli_si128(src_r1_16x8b, 2);                          //b4 b5 b6 b7 b8 b9....b15 0  0  0  0
162 
163         src_r0_sht_16x8b = _mm_srli_si128(src_r0_sht_16x8b, 2);                  //a5 a6 a7 a8 a9....a15 0  0  0  0  0
164         src_r1_sht_16x8b = _mm_srli_si128(src_r1_sht_16x8b, 2);                  //b5 b6 b7 b8 b9....b15 0  0  0  0  0
165 
166         src_r0_t1_16x8b = _mm_unpacklo_epi8(src_r0_16x8b, src_r0_sht_16x8b);     //a4 a5 a5 a6 a6 a7 a7 a8 a8 a9 a9 a10 a10 a11 a11 a12
167         src_r1_t1_16x8b = _mm_unpacklo_epi8(src_r1_16x8b, src_r1_sht_16x8b);     //b4 b5 b5 b6 b6 b7 b7 b8 b8 b9 b9 b10 b10 b11 b11 b12
168 
169         res_r0_t3_8x16b = _mm_maddubs_epi16(src_r0_t1_16x8b, coeff4_5_16x8b);    //a4*c4+a5*c5 a5*c4+a6*c5  a6*c4+a7*c5   a7*c4+a8*c5
170                                                                                  //a8*c4+a9*c5 a9*c4+a10*c5 a10*c4+a11*c5 a11*c4+a12*c5
171         res_r1_t3_8x16b = _mm_maddubs_epi16(src_r1_t1_16x8b, coeff4_5_16x8b);    //b4*c4+b5*c5 b5*c4+b6*c5  b6*c4+b7*c5   b7*c4+b8*c5
172                                                                                  //b8*c4+b9*c5 b9*c4+b10*c5 b10*c4+b11*c5 b11*c4+b12*c5
173         res_r0_t1_8x16b = _mm_add_epi16(res_r0_t1_8x16b, res_r0_t2_8x16b);
174         res_r1_t1_8x16b = _mm_add_epi16(res_r1_t1_8x16b, res_r1_t2_8x16b);
175         res_r0_t3_8x16b = _mm_add_epi16(res_r0_t3_8x16b, const_val16_8x16b);
176         res_r1_t3_8x16b = _mm_add_epi16(res_r1_t3_8x16b, const_val16_8x16b);
177         res_r0_t1_8x16b = _mm_add_epi16(res_r0_t1_8x16b, res_r0_t3_8x16b);
178         res_r1_t1_8x16b = _mm_add_epi16(res_r1_t1_8x16b, res_r1_t3_8x16b);
179 
180         tmp = ((pu1_src[18] + pu1_src[19]) << 2) - pu1_src[17] - pu1_src[20];
181         tmp = pu1_src[16] + pu1_src[21] + (tmp << 2) + tmp;
182 
183         res_r0_t1_8x16b = _mm_srai_epi16(res_r0_t1_8x16b, 5);                    //shifting right by 5 bits.
184         res_r1_t1_8x16b = _mm_srai_epi16(res_r1_t1_8x16b, 5);
185         tmp = (tmp + 16) >> 5;
186 
187         src_r0_16x8b = _mm_packus_epi16(res_r0_t1_8x16b, res_r1_t1_8x16b);
188         pu1_dst[16] = CLIP_U8(tmp);
189 
190         _mm_storeu_si128((__m128i *)pu1_dst, src_r0_16x8b);
191 
192         ht--;
193         pu1_src += src_strd;
194         pu1_dst += dst_strd;
195     }
196     while(ht > 0);
197 }
198 
199 /*
200 *******************************************************************************
201 *
202 * @brief
203 *   This function implements a two stage cascaded six tap filter. It
204 *    applies the six tap filter in the vertical direction on the
205 *    predictor values, followed by applying the same filter in the
206 *    horizontal direction on the output of the first stage. The six tap
207 *    filtering operation is described in sec 8.4.2.2.1 titled "Luma sample
208 *    interpolation process" (Filter run for width = 17 and height =17)
209 *
210 * @par Description:
211 *    The function interpolates the predictors first in the vertical direction
212 *    and then in the horizontal direction to output the (1/2,1/2). The output
213 *    of the first stage of the filter is stored in the buffer pointed to by
214 *    pi16_pred1(only in C) in 16 bit precision.
215 *
216 * @param[in] pu1_src
217 *  UWORD8 pointer to the source
218 *
219 * @param[out] pu1_dst1
220 *  UWORD8 pointer to the destination(Vertical filtered output)
221 *
222 * @param[out] pu1_dst2
223 *  UWORD8 pointer to the destination(out put after applying horizontal filter
224 *  to the intermediate vertical output)
225 *
226 * @param[in] src_strd
227 *  integer source stride
228 
229 * @param[in] dst_strd
230 *  integer destination stride of pu1_dst
231 *
232 * @param[in]pi16_pred1
233 *  Pointer to 16bit intermediate buffer(used only in c)
234 *
235 * @param[in] pi16_pred1_strd
236 *  integer destination stride of pi16_pred1
237 *
238 * @returns
239 *  None
240 *
241 * @remarks
242 *  None
243 *
244 *******************************************************************************
245 */
ih264e_sixtap_filter_2dvh_vert_ssse3(UWORD8 * pu1_src,UWORD8 * pu1_dst1,UWORD8 * pu1_dst2,WORD32 src_strd,WORD32 dst_strd,WORD32 * pi4_pred1,WORD32 pred1_strd)246 void ih264e_sixtap_filter_2dvh_vert_ssse3(UWORD8 *pu1_src,
247                                           UWORD8 *pu1_dst1,
248                                           UWORD8 *pu1_dst2,
249                                           WORD32 src_strd,
250                                           WORD32 dst_strd,
251                                           WORD32 *pi4_pred1,
252                                           WORD32 pred1_strd)
253 {
254     WORD32 ht;
255     WORD16 *pi2_pred1;
256 
257     ht = 17;
258     pi2_pred1 = (WORD16 *)pi4_pred1;
259     pred1_strd = pred1_strd << 1;
260 
261     // Vertical 6-tap filter
262     {
263         __m128i src1_r0_16x8b, src1_r1_16x8b, src1_r2_16x8b;
264         __m128i src1_r3_16x8b, src1_r4_16x8b, src1_r5_16x8b;
265         __m128i src2_r0_16x8b, src2_r1_16x8b, src2_r2_16x8b;
266         __m128i src2_r3_16x8b, src2_r4_16x8b, src2_r5_16x8b;
267 
268         __m128i src_r0r1_16x8b, src_r2r3_16x8b, src_r4r5_16x8b;
269 
270         __m128i res_t1_8x16b, res_t2_8x16b, res_t3_8x16b;
271         __m128i coeff0_1_16x8b, coeff2_3_16x8b, coeff4_5_16x8b;
272 
273         coeff0_1_16x8b = _mm_set1_epi32(0xFB01FB01); //c0 c1 c0 c1 c0 c1 c0 c1 c0 c1 c0 c1 c0 c1 c0 c1
274         coeff2_3_16x8b = _mm_set1_epi32(0x14141414); //c2 c3 c2 c3 c2 c3 c2 c3 c2 c3 c2 c3 c2 c3 c2 c3
275         coeff4_5_16x8b = _mm_set1_epi32(0x01FB01FB); //c4 c5 c4 c5 c4 c5 c4 c5 c4 c5 c4 c5 c4 c5 c4 c5
276                                                      //c0 = c5 = 1, c1 = c4 = -5, c2 = c3 = 20
277 
278         pu1_src -= 2;
279         pu1_src -= src_strd << 1; // the filter input starts from x[-2] (till x[3])
280 
281         // Loading first five rows to start first row processing.
282         // 22 values loaded in each row.
283         src1_r0_16x8b = _mm_loadu_si128((__m128i *)pu1_src);
284         src2_r0_16x8b = _mm_loadl_epi64((__m128i *)(pu1_src + 14));
285         pu1_src += src_strd;
286 
287         src1_r1_16x8b = _mm_loadu_si128((__m128i *)pu1_src);
288         src2_r1_16x8b = _mm_loadl_epi64((__m128i *)(pu1_src + 14));
289         pu1_src += src_strd;
290 
291         src1_r2_16x8b = _mm_loadu_si128((__m128i *)pu1_src);
292         src2_r2_16x8b = _mm_loadl_epi64((__m128i *)(pu1_src + 14));
293         pu1_src += src_strd;
294 
295         src1_r3_16x8b = _mm_loadu_si128((__m128i *)pu1_src);
296         src2_r3_16x8b = _mm_loadl_epi64((__m128i *)(pu1_src + 14));
297         pu1_src += src_strd;
298 
299         src1_r4_16x8b = _mm_loadu_si128((__m128i *)pu1_src);
300         src2_r4_16x8b = _mm_loadl_epi64((__m128i *)(pu1_src + 14));
301         pu1_src += src_strd;
302 
303         do
304         {
305             src1_r5_16x8b = _mm_loadu_si128((__m128i *)pu1_src);
306             src2_r5_16x8b = _mm_loadl_epi64((__m128i *)(pu1_src + 14));
307 
308             src_r0r1_16x8b = _mm_unpacklo_epi8(src1_r0_16x8b, src1_r1_16x8b);
309             src_r2r3_16x8b = _mm_unpacklo_epi8(src1_r2_16x8b, src1_r3_16x8b);
310             src_r4r5_16x8b = _mm_unpacklo_epi8(src1_r4_16x8b, src1_r5_16x8b);
311 
312             res_t1_8x16b = _mm_maddubs_epi16(src_r0r1_16x8b, coeff0_1_16x8b);
313             res_t2_8x16b = _mm_maddubs_epi16(src_r2r3_16x8b, coeff2_3_16x8b);
314             res_t3_8x16b = _mm_maddubs_epi16(src_r4r5_16x8b, coeff4_5_16x8b);
315 
316             res_t1_8x16b = _mm_add_epi16(res_t1_8x16b, res_t2_8x16b);
317             res_t1_8x16b = _mm_add_epi16(res_t3_8x16b, res_t1_8x16b);
318 
319             _mm_storeu_si128((__m128i *)pi2_pred1, res_t1_8x16b);
320 
321             src_r0r1_16x8b = _mm_unpackhi_epi8(src1_r0_16x8b, src1_r1_16x8b);
322             src_r2r3_16x8b = _mm_unpackhi_epi8(src1_r2_16x8b, src1_r3_16x8b);
323             src_r4r5_16x8b = _mm_unpackhi_epi8(src1_r4_16x8b, src1_r5_16x8b);
324 
325             res_t1_8x16b = _mm_maddubs_epi16(src_r0r1_16x8b, coeff0_1_16x8b);
326             res_t2_8x16b = _mm_maddubs_epi16(src_r2r3_16x8b, coeff2_3_16x8b);
327             res_t3_8x16b = _mm_maddubs_epi16(src_r4r5_16x8b, coeff4_5_16x8b);
328 
329             res_t1_8x16b = _mm_add_epi16(res_t1_8x16b, res_t2_8x16b);
330             res_t1_8x16b = _mm_add_epi16(res_t3_8x16b, res_t1_8x16b);
331 
332             _mm_storeu_si128((__m128i *)(pi2_pred1 + 8), res_t1_8x16b);
333 
334             src_r0r1_16x8b = _mm_unpacklo_epi8(src2_r0_16x8b, src2_r1_16x8b);
335             src_r2r3_16x8b = _mm_unpacklo_epi8(src2_r2_16x8b, src2_r3_16x8b);
336             src_r4r5_16x8b = _mm_unpacklo_epi8(src2_r4_16x8b, src2_r5_16x8b);
337 
338             res_t1_8x16b = _mm_maddubs_epi16(src_r0r1_16x8b, coeff0_1_16x8b);
339             res_t2_8x16b = _mm_maddubs_epi16(src_r2r3_16x8b, coeff2_3_16x8b);
340             res_t3_8x16b = _mm_maddubs_epi16(src_r4r5_16x8b, coeff4_5_16x8b);
341 
342             res_t1_8x16b = _mm_add_epi16(res_t1_8x16b, res_t2_8x16b);
343             res_t1_8x16b = _mm_add_epi16(res_t3_8x16b, res_t1_8x16b);
344 
345             _mm_storeu_si128((__m128i *)(pi2_pred1 + 14), res_t1_8x16b);
346 
347             src1_r0_16x8b = src1_r1_16x8b;
348             src1_r1_16x8b = src1_r2_16x8b;
349             src1_r2_16x8b = src1_r3_16x8b;
350             src1_r3_16x8b = src1_r4_16x8b;
351             src1_r4_16x8b = src1_r5_16x8b;
352 
353             src2_r0_16x8b = src2_r1_16x8b;
354             src2_r1_16x8b = src2_r2_16x8b;
355             src2_r2_16x8b = src2_r3_16x8b;
356             src2_r3_16x8b = src2_r4_16x8b;
357             src2_r4_16x8b = src2_r5_16x8b;
358 
359             ht--;
360             pu1_src += src_strd;
361             pi2_pred1 += pred1_strd;
362         }
363         while(ht > 0);
364     }
365 
366     ht = 17;
367     pi2_pred1 = (WORD16 *)pi4_pred1;
368 
369     // Horizontal 6-tap filter
370     {
371         WORD32 temp;
372 
373         __m128i src_r0_8x16b, src_r1_8x16b, src_r2_8x16b, src_r3_8x16b;
374         __m128i src_r4_8x16b, src_r5_8x16b;
375         __m128i src_r0r1_8x16b, src_r2r3_8x16b, src_r4r5_8x16b;
376         __m128i res_vert1_8x16b, res_vert2_8x16b, res_16x8b;
377 
378         __m128i res_t0_4x32b, res_t1_4x32b, res_t2_4x32b, res_t3_4x32b;
379         __m128i res_c0_8x16b, res_c1_8x16b;
380 
381         __m128i coeff0_1_8x16b, coeff2_3_8x16b, coeff4_5_8x16b;
382         __m128i const_val512_4x32b, const_val16_8x16b;
383 
384         coeff0_1_8x16b = _mm_set1_epi32(0xFFFB0001); //c0 c1 c0 c1 c0 c1 c0 c1
385         coeff2_3_8x16b = _mm_set1_epi32(0x00140014); //c2 c3 c2 c3 c2 c3 c2 c3
386         coeff4_5_8x16b = _mm_set1_epi32(0x0001FFFB); //c4 c5 c4 c5 c4 c5 c4 c5
387                                                      //c0 = c5 = 1, c1 = c4 = -5, c2 = c3 = 20
388         const_val512_4x32b = _mm_set1_epi32(512);
389         const_val16_8x16b = _mm_set1_epi16(16);
390 
391         do
392         {
393             src_r0_8x16b = _mm_loadu_si128((__m128i *)(pi2_pred1));
394             src_r1_8x16b = _mm_loadu_si128((__m128i *)(pi2_pred1 + 1));
395             src_r2_8x16b = _mm_loadu_si128((__m128i *)(pi2_pred1 + 2));
396             src_r3_8x16b = _mm_loadu_si128((__m128i *)(pi2_pred1 + 3));
397             src_r4_8x16b = _mm_loadu_si128((__m128i *)(pi2_pred1 + 4));
398             src_r5_8x16b = _mm_loadu_si128((__m128i *)(pi2_pred1 + 5));
399 
400             res_vert1_8x16b = _mm_add_epi16(src_r2_8x16b, const_val16_8x16b);
401             res_vert1_8x16b = _mm_srai_epi16(res_vert1_8x16b, 5); //shifting right by 5 bits.
402 
403             src_r0r1_8x16b = _mm_unpacklo_epi16(src_r0_8x16b, src_r1_8x16b);
404             src_r2r3_8x16b = _mm_unpacklo_epi16(src_r2_8x16b, src_r3_8x16b);
405             src_r4r5_8x16b = _mm_unpacklo_epi16(src_r4_8x16b, src_r5_8x16b);
406 
407             res_t1_4x32b = _mm_madd_epi16(src_r0r1_8x16b, coeff0_1_8x16b);
408             res_t2_4x32b = _mm_madd_epi16(src_r2r3_8x16b, coeff2_3_8x16b);
409             res_t3_4x32b = _mm_madd_epi16(src_r4r5_8x16b, coeff4_5_8x16b);
410 
411             res_t1_4x32b = _mm_add_epi32(res_t1_4x32b, res_t2_4x32b);
412             res_t3_4x32b = _mm_add_epi32(res_t3_4x32b, const_val512_4x32b);
413             res_t1_4x32b = _mm_add_epi32(res_t1_4x32b, res_t3_4x32b);
414             res_t0_4x32b = _mm_srai_epi32(res_t1_4x32b, 10);
415 
416             src_r0r1_8x16b = _mm_unpackhi_epi16(src_r0_8x16b, src_r1_8x16b);
417             src_r2r3_8x16b = _mm_unpackhi_epi16(src_r2_8x16b, src_r3_8x16b);
418             src_r4r5_8x16b = _mm_unpackhi_epi16(src_r4_8x16b, src_r5_8x16b);
419 
420             res_t1_4x32b = _mm_madd_epi16(src_r0r1_8x16b, coeff0_1_8x16b);
421             res_t2_4x32b = _mm_madd_epi16(src_r2r3_8x16b, coeff2_3_8x16b);
422             res_t3_4x32b = _mm_madd_epi16(src_r4r5_8x16b, coeff4_5_8x16b);
423 
424             res_t1_4x32b = _mm_add_epi32(res_t1_4x32b, res_t2_4x32b);
425             res_t3_4x32b = _mm_add_epi32(res_t3_4x32b, const_val512_4x32b);
426             res_t1_4x32b = _mm_add_epi32(res_t1_4x32b, res_t3_4x32b);
427             res_t1_4x32b = _mm_srai_epi32(res_t1_4x32b, 10);
428 
429             res_c0_8x16b = _mm_packs_epi32(res_t0_4x32b, res_t1_4x32b);
430 
431             src_r0_8x16b = _mm_loadu_si128((__m128i *)(pi2_pred1 + 8));
432             src_r1_8x16b = _mm_loadu_si128((__m128i *)(pi2_pred1 + 8 + 1));
433             src_r2_8x16b = _mm_loadu_si128((__m128i *)(pi2_pred1 + 8 + 2));
434             src_r3_8x16b = _mm_loadu_si128((__m128i *)(pi2_pred1 + 8 + 3));
435             src_r4_8x16b = _mm_loadu_si128((__m128i *)(pi2_pred1 + 8 + 4));
436             src_r5_8x16b = _mm_loadu_si128((__m128i *)(pi2_pred1 + 8 + 5));
437 
438             res_vert2_8x16b = _mm_add_epi16(src_r2_8x16b, const_val16_8x16b);
439             res_vert2_8x16b = _mm_srai_epi16(res_vert2_8x16b, 5); //shifting right by 5 bits.
440 
441             src_r0r1_8x16b = _mm_unpacklo_epi16(src_r0_8x16b, src_r1_8x16b);
442             src_r2r3_8x16b = _mm_unpacklo_epi16(src_r2_8x16b, src_r3_8x16b);
443             src_r4r5_8x16b = _mm_unpacklo_epi16(src_r4_8x16b, src_r5_8x16b);
444 
445             res_t1_4x32b = _mm_madd_epi16(src_r0r1_8x16b, coeff0_1_8x16b);
446             res_t2_4x32b = _mm_madd_epi16(src_r2r3_8x16b, coeff2_3_8x16b);
447             res_t3_4x32b = _mm_madd_epi16(src_r4r5_8x16b, coeff4_5_8x16b);
448 
449             res_t1_4x32b = _mm_add_epi32(res_t1_4x32b, res_t2_4x32b);
450             res_t3_4x32b = _mm_add_epi32(res_t3_4x32b, const_val512_4x32b);
451             res_t1_4x32b = _mm_add_epi32(res_t1_4x32b, res_t3_4x32b);
452             res_t0_4x32b = _mm_srai_epi32(res_t1_4x32b ,10);
453 
454             src_r0r1_8x16b = _mm_unpackhi_epi16(src_r0_8x16b, src_r1_8x16b);
455             src_r2r3_8x16b = _mm_unpackhi_epi16(src_r2_8x16b, src_r3_8x16b);
456             src_r4r5_8x16b = _mm_unpackhi_epi16(src_r4_8x16b, src_r5_8x16b);
457 
458             res_t1_4x32b = _mm_madd_epi16(src_r0r1_8x16b, coeff0_1_8x16b);
459             res_t2_4x32b = _mm_madd_epi16(src_r2r3_8x16b, coeff2_3_8x16b);
460             res_t3_4x32b = _mm_madd_epi16(src_r4r5_8x16b, coeff4_5_8x16b);
461 
462             res_t1_4x32b = _mm_add_epi32(res_t1_4x32b, res_t2_4x32b);
463             res_t3_4x32b = _mm_add_epi32(res_t3_4x32b, const_val512_4x32b);
464             res_t1_4x32b = _mm_add_epi32(res_t1_4x32b, res_t3_4x32b);
465             res_t1_4x32b = _mm_srai_epi32(res_t1_4x32b, 10);
466 
467             res_c1_8x16b = _mm_packs_epi32(res_t0_4x32b, res_t1_4x32b);
468 
469             res_16x8b = _mm_packus_epi16(res_vert1_8x16b, res_vert2_8x16b);
470             _mm_storeu_si128((__m128i *)pu1_dst1, res_16x8b);
471             pu1_dst1[16] = CLIP_U8((pi2_pred1[18] + 16) >> 5);
472 
473             res_16x8b = _mm_packus_epi16(res_c0_8x16b, res_c1_8x16b);
474             _mm_storeu_si128((__m128i *)pu1_dst2, res_16x8b);
475             temp = ((pi2_pred1[18] + pi2_pred1[19]) << 2) - pi2_pred1[17] - pi2_pred1[20];
476             temp = pi2_pred1[16] + pi2_pred1[21] + (temp << 2) + temp;
477             pu1_dst2[16] = CLIP_U8((temp + 512) >> 10);
478 
479             ht--;
480             pi2_pred1 += pred1_strd;
481             pu1_dst1 += dst_strd;
482             pu1_dst2 += dst_strd;
483         }
484         while(ht > 0);
485     }
486 }
487