FFmpeg
h264chroma_template.c
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1 /*
2  * Copyright (c) 2004 Romain Dolbeau <romain@dolbeau.org>
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #include "libavutil/mem_internal.h"
22 #include "libavutil/ppc/util_altivec.h"
23 
24 /* this code assume that stride % 16 == 0 */
25 
26 #define CHROMA_MC8_ALTIVEC_CORE(BIAS1, BIAS2) \
27  vsrc2ssH = (vec_s16)VEC_MERGEH(zero_u8v,(vec_u8)vsrc2uc);\
28  vsrc3ssH = (vec_s16)VEC_MERGEH(zero_u8v,(vec_u8)vsrc3uc);\
29 \
30  psum = vec_mladd(vA, vsrc0ssH, BIAS1);\
31  psum = vec_mladd(vB, vsrc1ssH, psum);\
32  psum = vec_mladd(vC, vsrc2ssH, psum);\
33  psum = vec_mladd(vD, vsrc3ssH, psum);\
34  psum = BIAS2(psum);\
35  psum = vec_sr(psum, v6us);\
36 \
37  vdst = vec_ld(0, dst);\
38  ppsum = (vec_u8)vec_pack(psum, psum);\
39  vfdst = vec_perm(vdst, ppsum, fperm);\
40 \
41  OP_U8_ALTIVEC(fsum, vfdst, vdst);\
42 \
43  vec_st(fsum, 0, dst);\
44 \
45  vsrc0ssH = vsrc2ssH;\
46  vsrc1ssH = vsrc3ssH;\
47 \
48  dst += stride;\
49  src += stride;
50 
51 #define CHROMA_MC8_ALTIVEC_CORE_SIMPLE \
52 \
53  vsrc0ssH = (vec_s16)VEC_MERGEH(zero_u8v,(vec_u8)vsrc0uc);\
54  vsrc1ssH = (vec_s16)VEC_MERGEH(zero_u8v,(vec_u8)vsrc1uc);\
55 \
56  psum = vec_mladd(vA, vsrc0ssH, v32ss);\
57  psum = vec_mladd(vE, vsrc1ssH, psum);\
58  psum = vec_sr(psum, v6us);\
59 \
60  vdst = vec_ld(0, dst);\
61  ppsum = (vec_u8)vec_pack(psum, psum);\
62  vfdst = vec_perm(vdst, ppsum, fperm);\
63 \
64  OP_U8_ALTIVEC(fsum, vfdst, vdst);\
65 \
66  vec_st(fsum, 0, dst);\
67 \
68  dst += stride;\
69  src += stride;
70 
71 #define noop(a) a
72 #define add28(a) vec_add(v28ss, a)
73 
74 #if HAVE_BIGENDIAN
75 #define GET_VSRC1(vs0, off, b, perm0, s){ \
76  vec_u8 vsrcCuc, vsrcDuc; \
77  vsrcCuc = vec_ld(off, s); \
78  if (loadSecond){ \
79  vsrcDuc = vec_ld(off + b, s); \
80  } else \
81  vsrcDuc = vsrcCuc; \
82  \
83  vs0 = vec_perm(vsrcCuc, vsrcDuc, perm0); \
84 }
85 #define GET_VSRC(vs0, vs1, off, b, perm0, perm1, s){ \
86  vec_u8 vsrcCuc, vsrcDuc; \
87  vsrcCuc = vec_ld(off, s); \
88  if (loadSecond){ \
89  vsrcDuc = vec_ld(off + b, s); \
90  } else \
91  vsrcDuc = vsrcCuc; \
92  \
93  vs0 = vec_perm(vsrcCuc, vsrcDuc, perm0); \
94  if (reallyBadAlign){ \
95  vs1 = vsrcDuc; \
96  } else \
97  vs1 = vec_perm(vsrcCuc, vsrcDuc, perm1); \
98  }
99 
100 #else
101 
102 #define GET_VSRC1(vs0, off, b, perm0, s){ \
103  vs0 = vec_vsx_ld(off, s); \
104  }
105 #define GET_VSRC(vs0, vs1, off, b, perm0, perm1, s){ \
106  vs0 = vec_vsx_ld(off, s); \
107  vs1 = vec_vsx_ld(off + 1, s); \
108  }
109 #endif /* HAVE_BIGENDIAN */
110 
111 #ifdef PREFIX_h264_chroma_mc8_altivec
112 static void PREFIX_h264_chroma_mc8_altivec(uint8_t * dst, const uint8_t * src,
113  ptrdiff_t stride, int h,
114  int x, int y)
115 {
116  DECLARE_ALIGNED(16, signed int, ABCD)[4] =
117  {((8 - x) * (8 - y)),
118  (( x) * (8 - y)),
119  ((8 - x) * ( y)),
120  (( x) * ( y))};
121  register int i;
122  vec_u8 fperm;
123  LOAD_ZERO;
124  const vec_s32 vABCD = vec_ld(0, ABCD);
125  const vec_s16 vA = VEC_SPLAT16(vABCD, 1);
126  const vec_s16 vB = VEC_SPLAT16(vABCD, 3);
127  const vec_s16 vC = VEC_SPLAT16(vABCD, 5);
128  const vec_s16 vD = VEC_SPLAT16(vABCD, 7);
129  const vec_s16 v32ss = vec_sl(vec_splat_s16(1),vec_splat_u16(5));
130  const vec_u16 v6us = vec_splat_u16(6);
131 
132  vec_u8 vsrcperm0, vsrcperm1;
133  vec_u8 vsrc0uc, vsrc1uc;
134  vec_s16 vsrc0ssH, vsrc1ssH;
135  vec_u8 vsrc2uc, vsrc3uc;
136  vec_s16 vsrc2ssH, vsrc3ssH, psum;
137  vec_u8 vdst, ppsum, vfdst, fsum;
138 #if HAVE_BIGENDIAN
139  register int loadSecond = (((unsigned long)src) % 16) <= 7 ? 0 : 1;
140  register int reallyBadAlign = (((unsigned long)src) % 16) == 15 ? 1 : 0;
141  vsrcperm0 = vec_lvsl(0, src);
142  vsrcperm1 = vec_lvsl(1, src);
143 #endif
144 
145  if (((unsigned long)dst) % 16 == 0) {
146  fperm = (vec_u8){0x10, 0x11, 0x12, 0x13,
147  0x14, 0x15, 0x16, 0x17,
148  0x08, 0x09, 0x0A, 0x0B,
149  0x0C, 0x0D, 0x0E, 0x0F};
150  } else {
151  fperm = (vec_u8){0x00, 0x01, 0x02, 0x03,
152  0x04, 0x05, 0x06, 0x07,
153  0x18, 0x19, 0x1A, 0x1B,
154  0x1C, 0x1D, 0x1E, 0x1F};
155  }
156 
157  GET_VSRC(vsrc0uc, vsrc1uc, 0, 16, vsrcperm0, vsrcperm1, src);
158 
159  vsrc0ssH = (vec_s16)VEC_MERGEH(zero_u8v,(vec_u8)vsrc0uc);
160  vsrc1ssH = (vec_s16)VEC_MERGEH(zero_u8v,(vec_u8)vsrc1uc);
161 
162  if (ABCD[3]) {
163  for (i = 0 ; i < h ; i++) {
164  GET_VSRC(vsrc2uc, vsrc3uc, stride, 16, vsrcperm0, vsrcperm1, src);
165  CHROMA_MC8_ALTIVEC_CORE(v32ss, noop);
166  }
167  } else {
168  const vec_s16 vE = vec_add(vB, vC);
169  if (ABCD[2]) { // x == 0 B == 0
170  for (i = 0 ; i < h ; i++) {
171  GET_VSRC1(vsrc1uc, stride, 15, vsrcperm0, src);
172  CHROMA_MC8_ALTIVEC_CORE_SIMPLE;
173  vsrc0uc = vsrc1uc;
174  }
175  } else { // y == 0 C == 0
176  for (i = 0 ; i < h ; i++) {
177  GET_VSRC(vsrc0uc, vsrc1uc, 0, 15, vsrcperm0, vsrcperm1, src);
178  CHROMA_MC8_ALTIVEC_CORE_SIMPLE;
179  }
180  }
181  }
182 }
183 #endif
184 
185 /* this code assume that stride % 16 == 0 */
186 #ifdef PREFIX_no_rnd_vc1_chroma_mc8_altivec
187 static void PREFIX_no_rnd_vc1_chroma_mc8_altivec(uint8_t *dst, const uint8_t *src,
188  ptrdiff_t stride, int h,
189  int x, int y)
190 {
191  DECLARE_ALIGNED(16, signed int, ABCD)[4] =
192  {((8 - x) * (8 - y)),
193  (( x) * (8 - y)),
194  ((8 - x) * ( y)),
195  (( x) * ( y))};
196  register int i;
197  vec_u8 fperm;
198  LOAD_ZERO;
199  const vec_s32 vABCD = vec_ld(0, ABCD);
200  const vec_s16 vA = VEC_SPLAT16(vABCD, 1);
201  const vec_s16 vB = VEC_SPLAT16(vABCD, 3);
202  const vec_s16 vC = VEC_SPLAT16(vABCD, 5);
203  const vec_s16 vD = VEC_SPLAT16(vABCD, 7);
204  const vec_s16 v28ss = vec_sub(vec_sl(vec_splat_s16(1),vec_splat_u16(5)),vec_splat_s16(4));
205  const vec_u16 v6us = vec_splat_u16(6);
206 
207  vec_u8 vsrcperm0, vsrcperm1;
208  vec_u8 vsrc0uc, vsrc1uc;
209  vec_s16 vsrc0ssH, vsrc1ssH;
210  vec_u8 vsrc2uc, vsrc3uc;
211  vec_s16 vsrc2ssH, vsrc3ssH, psum;
212  vec_u8 vdst, ppsum, vfdst, fsum;
213 #if HAVE_BIGENDIAN
214  register int loadSecond = (((unsigned long)src) % 16) <= 7 ? 0 : 1;
215  register int reallyBadAlign = (((unsigned long)src) % 16) == 15 ? 1 : 0;
216  vsrcperm0 = vec_lvsl(0, src);
217  vsrcperm1 = vec_lvsl(1, src);
218 #endif
219 
220  if (((unsigned long)dst) % 16 == 0) {
221  fperm = (vec_u8){0x10, 0x11, 0x12, 0x13,
222  0x14, 0x15, 0x16, 0x17,
223  0x08, 0x09, 0x0A, 0x0B,
224  0x0C, 0x0D, 0x0E, 0x0F};
225  } else {
226  fperm = (vec_u8){0x00, 0x01, 0x02, 0x03,
227  0x04, 0x05, 0x06, 0x07,
228  0x18, 0x19, 0x1A, 0x1B,
229  0x1C, 0x1D, 0x1E, 0x1F};
230  }
231 
232  GET_VSRC(vsrc0uc, vsrc1uc, 0, 16, vsrcperm0, vsrcperm1, src);
233 
234  vsrc0ssH = (vec_s16)VEC_MERGEH(zero_u8v, (vec_u8)vsrc0uc);
235  vsrc1ssH = (vec_s16)VEC_MERGEH(zero_u8v, (vec_u8)vsrc1uc);
236 
237  for (i = 0 ; i < h ; i++) {
238  GET_VSRC(vsrc2uc, vsrc3uc, stride, 16, vsrcperm0, vsrcperm1, src);
239  CHROMA_MC8_ALTIVEC_CORE(vec_splat_s16(0), add28);
240  }
241 }
242 #endif
243 
244 #undef noop
245 #undef add28
246 #undef CHROMA_MC8_ALTIVEC_CORE
add28
#define add28(a)
Definition: h264chroma_template.c:72
mem_internal.h
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#define LOAD_ZERO
Definition: util_altivec.h:45
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Definition: h264chroma_template.c:102
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Definition: util_altivec.h:39
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Definition: util_altivec.h:37
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Definition: util_altivec.h:47
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Definition: mem_internal.h:104
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Definition: h264chroma_template.c:105
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Definition: util_altivec.h:34
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Definition: h264chroma_template.c:71
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Definition: h264pred_template.c:537
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Definition: h264chroma_template.c:26
util_altivec.h
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Definition: h264chroma_template.c:51
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