2 * Copyright (c) 2004 Romain Dolbeau <romain@dolbeau.org>
4 * This file is part of FFmpeg.
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.
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.
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
22 #include "libavutil/attributes.h"
23 #include "libavutil/cpu.h"
24 #include "libavutil/intreadwrite.h"
25 #include "libavutil/ppc/cpu.h"
26 #include "libavutil/ppc/types_altivec.h"
27 #include "libavutil/ppc/util_altivec.h"
28 #include "libavcodec/h264data.h"
29 #include "libavcodec/h264dsp.h"
33 /****************************************************************************
35 ****************************************************************************/
37 #define VEC_1D_DCT(vb0,vb1,vb2,vb3,va0,va1,va2,va3) \
39 vz0 = vec_add(vb0,vb2); /* temp[0] = Y[0] + Y[2] */ \
40 vz1 = vec_sub(vb0,vb2); /* temp[1] = Y[0] - Y[2] */ \
41 vz2 = vec_sra(vb1,vec_splat_u16(1)); \
42 vz2 = vec_sub(vz2,vb3); /* temp[2] = Y[1].1/2 - Y[3] */ \
43 vz3 = vec_sra(vb3,vec_splat_u16(1)); \
44 vz3 = vec_add(vb1,vz3); /* temp[3] = Y[1] + Y[3].1/2 */ \
45 /* 2nd stage: output */ \
46 va0 = vec_add(vz0,vz3); /* x[0] = temp[0] + temp[3] */ \
47 va1 = vec_add(vz1,vz2); /* x[1] = temp[1] + temp[2] */ \
48 va2 = vec_sub(vz1,vz2); /* x[2] = temp[1] - temp[2] */ \
49 va3 = vec_sub(vz0,vz3) /* x[3] = temp[0] - temp[3] */
51 #define VEC_TRANSPOSE_4(a0,a1,a2,a3,b0,b1,b2,b3) \
52 b0 = vec_mergeh( a0, a0 ); \
53 b1 = vec_mergeh( a1, a0 ); \
54 b2 = vec_mergeh( a2, a0 ); \
55 b3 = vec_mergeh( a3, a0 ); \
56 a0 = vec_mergeh( b0, b2 ); \
57 a1 = vec_mergel( b0, b2 ); \
58 a2 = vec_mergeh( b1, b3 ); \
59 a3 = vec_mergel( b1, b3 ); \
60 b0 = vec_mergeh( a0, a2 ); \
61 b1 = vec_mergel( a0, a2 ); \
62 b2 = vec_mergeh( a1, a3 ); \
63 b3 = vec_mergel( a1, a3 )
65 #define VEC_LOAD_U8_ADD_S16_STORE_U8(va) \
66 vdst_orig = vec_ld(0, dst); \
67 vdst = vec_perm(vdst_orig, zero_u8v, vdst_mask); \
68 vdst_ss = (vec_s16) vec_mergeh(zero_u8v, vdst); \
69 va = vec_add(va, vdst_ss); \
70 va_u8 = vec_packsu(va, zero_s16v); \
71 va_u32 = vec_splat((vec_u32)va_u8, 0); \
72 vec_ste(va_u32, element, (uint32_t*)dst);
74 static void h264_idct_add_altivec(uint8_t *dst
, int16_t *block
, int stride
)
76 vec_s16 va0
, va1
, va2
, va3
;
77 vec_s16 vz0
, vz1
, vz2
, vz3
;
78 vec_s16 vtmp0
, vtmp1
, vtmp2
, vtmp3
;
82 const vec_u16 v6us
= vec_splat_u16(6);
83 vec_u8 vdst
, vdst_orig
;
84 vec_u8 vdst_mask
= vec_lvsl(0, dst
);
85 int element
= ((unsigned long)dst
& 0xf) >> 2;
88 block
[0] += 32; /* add 32 as a DC-level for rounding */
90 vtmp0
= vec_ld(0,block
);
91 vtmp1
= vec_sld(vtmp0
, vtmp0
, 8);
92 vtmp2
= vec_ld(16,block
);
93 vtmp3
= vec_sld(vtmp2
, vtmp2
, 8);
94 memset(block
, 0, 16 * sizeof(int16_t));
96 VEC_1D_DCT(vtmp0
,vtmp1
,vtmp2
,vtmp3
,va0
,va1
,va2
,va3
);
97 VEC_TRANSPOSE_4(va0
,va1
,va2
,va3
,vtmp0
,vtmp1
,vtmp2
,vtmp3
);
98 VEC_1D_DCT(vtmp0
,vtmp1
,vtmp2
,vtmp3
,va0
,va1
,va2
,va3
);
100 va0
= vec_sra(va0
,v6us
);
101 va1
= vec_sra(va1
,v6us
);
102 va2
= vec_sra(va2
,v6us
);
103 va3
= vec_sra(va3
,v6us
);
105 VEC_LOAD_U8_ADD_S16_STORE_U8(va0
);
107 VEC_LOAD_U8_ADD_S16_STORE_U8(va1
);
109 VEC_LOAD_U8_ADD_S16_STORE_U8(va2
);
111 VEC_LOAD_U8_ADD_S16_STORE_U8(va3
);
114 #define IDCT8_1D_ALTIVEC(s0, s1, s2, s3, s4, s5, s6, s7, d0, d1, d2, d3, d4, d5, d6, d7) {\
115 /* a0 = SRC(0) + SRC(4); */ \
116 vec_s16 a0v = vec_add(s0, s4); \
117 /* a2 = SRC(0) - SRC(4); */ \
118 vec_s16 a2v = vec_sub(s0, s4); \
119 /* a4 = (SRC(2)>>1) - SRC(6); */ \
120 vec_s16 a4v = vec_sub(vec_sra(s2, onev), s6); \
121 /* a6 = (SRC(6)>>1) + SRC(2); */ \
122 vec_s16 a6v = vec_add(vec_sra(s6, onev), s2); \
123 /* b0 = a0 + a6; */ \
124 vec_s16 b0v = vec_add(a0v, a6v); \
125 /* b2 = a2 + a4; */ \
126 vec_s16 b2v = vec_add(a2v, a4v); \
127 /* b4 = a2 - a4; */ \
128 vec_s16 b4v = vec_sub(a2v, a4v); \
129 /* b6 = a0 - a6; */ \
130 vec_s16 b6v = vec_sub(a0v, a6v); \
131 /* a1 = SRC(5) - SRC(3) - SRC(7) - (SRC(7)>>1); */ \
132 /* a1 = (SRC(5)-SRC(3)) - (SRC(7) + (SRC(7)>>1)); */ \
133 vec_s16 a1v = vec_sub( vec_sub(s5, s3), vec_add(s7, vec_sra(s7, onev)) ); \
134 /* a3 = SRC(7) + SRC(1) - SRC(3) - (SRC(3)>>1); */ \
135 /* a3 = (SRC(7)+SRC(1)) - (SRC(3) + (SRC(3)>>1)); */ \
136 vec_s16 a3v = vec_sub( vec_add(s7, s1), vec_add(s3, vec_sra(s3, onev)) );\
137 /* a5 = SRC(7) - SRC(1) + SRC(5) + (SRC(5)>>1); */ \
138 /* a5 = (SRC(7)-SRC(1)) + SRC(5) + (SRC(5)>>1); */ \
139 vec_s16 a5v = vec_add( vec_sub(s7, s1), vec_add(s5, vec_sra(s5, onev)) );\
140 /* a7 = SRC(5)+SRC(3) + SRC(1) + (SRC(1)>>1); */ \
141 vec_s16 a7v = vec_add( vec_add(s5, s3), vec_add(s1, vec_sra(s1, onev)) );\
142 /* b1 = (a7>>2) + a1; */ \
143 vec_s16 b1v = vec_add( vec_sra(a7v, twov), a1v); \
144 /* b3 = a3 + (a5>>2); */ \
145 vec_s16 b3v = vec_add(a3v, vec_sra(a5v, twov)); \
146 /* b5 = (a3>>2) - a5; */ \
147 vec_s16 b5v = vec_sub( vec_sra(a3v, twov), a5v); \
148 /* b7 = a7 - (a1>>2); */ \
149 vec_s16 b7v = vec_sub( a7v, vec_sra(a1v, twov)); \
150 /* DST(0, b0 + b7); */ \
151 d0 = vec_add(b0v, b7v); \
152 /* DST(1, b2 + b5); */ \
153 d1 = vec_add(b2v, b5v); \
154 /* DST(2, b4 + b3); */ \
155 d2 = vec_add(b4v, b3v); \
156 /* DST(3, b6 + b1); */ \
157 d3 = vec_add(b6v, b1v); \
158 /* DST(4, b6 - b1); */ \
159 d4 = vec_sub(b6v, b1v); \
160 /* DST(5, b4 - b3); */ \
161 d5 = vec_sub(b4v, b3v); \
162 /* DST(6, b2 - b5); */ \
163 d6 = vec_sub(b2v, b5v); \
164 /* DST(7, b0 - b7); */ \
165 d7 = vec_sub(b0v, b7v); \
168 #define ALTIVEC_STORE_SUM_CLIP(dest, idctv, perm_ldv, perm_stv, sel) { \
169 /* unaligned load */ \
170 vec_u8 hv = vec_ld( 0, dest ); \
171 vec_u8 lv = vec_ld( 7, dest ); \
172 vec_u8 dstv = vec_perm( hv, lv, (vec_u8)perm_ldv ); \
173 vec_s16 idct_sh6 = vec_sra(idctv, sixv); \
174 vec_u16 dst16 = (vec_u16)vec_mergeh(zero_u8v, dstv); \
175 vec_s16 idstsum = vec_adds(idct_sh6, (vec_s16)dst16); \
176 vec_u8 idstsum8 = vec_packsu(zero_s16v, idstsum); \
178 /* unaligned store */ \
179 vec_u8 bodyv = vec_perm( idstsum8, idstsum8, perm_stv );\
180 vec_u8 edgelv = vec_perm( sel, zero_u8v, perm_stv ); \
181 lv = vec_sel( lv, bodyv, edgelv ); \
182 vec_st( lv, 7, dest ); \
183 hv = vec_ld( 0, dest ); \
184 edgehv = vec_perm( zero_u8v, sel, perm_stv ); \
185 hv = vec_sel( hv, bodyv, edgehv ); \
186 vec_st( hv, 0, dest ); \
189 static void h264_idct8_add_altivec(uint8_t *dst
, int16_t *dct
, int stride
)
191 vec_s16 s0
, s1
, s2
, s3
, s4
, s5
, s6
, s7
;
192 vec_s16 d0
, d1
, d2
, d3
, d4
, d5
, d6
, d7
;
193 vec_s16 idct0
, idct1
, idct2
, idct3
, idct4
, idct5
, idct6
, idct7
;
195 vec_u8 perm_ldv
= vec_lvsl(0, dst
);
196 vec_u8 perm_stv
= vec_lvsr(8, dst
);
198 const vec_u16 onev
= vec_splat_u16(1);
199 const vec_u16 twov
= vec_splat_u16(2);
200 const vec_u16 sixv
= vec_splat_u16(6);
202 const vec_u8 sel
= (vec_u8
) {0,0,0,0,0,0,0,0,-1,-1,-1,-1,-1,-1,-1,-1};
205 dct
[0] += 32; // rounding for the >>6 at the end
207 s0
= vec_ld(0x00, (int16_t*)dct
);
208 s1
= vec_ld(0x10, (int16_t*)dct
);
209 s2
= vec_ld(0x20, (int16_t*)dct
);
210 s3
= vec_ld(0x30, (int16_t*)dct
);
211 s4
= vec_ld(0x40, (int16_t*)dct
);
212 s5
= vec_ld(0x50, (int16_t*)dct
);
213 s6
= vec_ld(0x60, (int16_t*)dct
);
214 s7
= vec_ld(0x70, (int16_t*)dct
);
215 memset(dct
, 0, 64 * sizeof(int16_t));
217 IDCT8_1D_ALTIVEC(s0
, s1
, s2
, s3
, s4
, s5
, s6
, s7
,
218 d0
, d1
, d2
, d3
, d4
, d5
, d6
, d7
);
220 TRANSPOSE8( d0
, d1
, d2
, d3
, d4
, d5
, d6
, d7
);
222 IDCT8_1D_ALTIVEC(d0
, d1
, d2
, d3
, d4
, d5
, d6
, d7
,
223 idct0
, idct1
, idct2
, idct3
, idct4
, idct5
, idct6
, idct7
);
225 ALTIVEC_STORE_SUM_CLIP(&dst
[0*stride
], idct0
, perm_ldv
, perm_stv
, sel
);
226 ALTIVEC_STORE_SUM_CLIP(&dst
[1*stride
], idct1
, perm_ldv
, perm_stv
, sel
);
227 ALTIVEC_STORE_SUM_CLIP(&dst
[2*stride
], idct2
, perm_ldv
, perm_stv
, sel
);
228 ALTIVEC_STORE_SUM_CLIP(&dst
[3*stride
], idct3
, perm_ldv
, perm_stv
, sel
);
229 ALTIVEC_STORE_SUM_CLIP(&dst
[4*stride
], idct4
, perm_ldv
, perm_stv
, sel
);
230 ALTIVEC_STORE_SUM_CLIP(&dst
[5*stride
], idct5
, perm_ldv
, perm_stv
, sel
);
231 ALTIVEC_STORE_SUM_CLIP(&dst
[6*stride
], idct6
, perm_ldv
, perm_stv
, sel
);
232 ALTIVEC_STORE_SUM_CLIP(&dst
[7*stride
], idct7
, perm_ldv
, perm_stv
, sel
);
235 static av_always_inline
void h264_idct_dc_add_internal(uint8_t *dst
, int16_t *block
, int stride
, int size
)
238 vec_u8 dcplus
, dcminus
, v0
, v1
, v2
, v3
, aligner
;
240 DECLARE_ALIGNED(16, int, dc
);
243 dc
= (block
[0] + 32) >> 6;
245 dc16
= vec_splat((vec_s16
) vec_lde(0, &dc
), 1);
248 dc16
= vec_sld(dc16
, zero_s16v
, 8);
249 dcplus
= vec_packsu(dc16
, zero_s16v
);
250 dcminus
= vec_packsu(vec_sub(zero_s16v
, dc16
), zero_s16v
);
252 aligner
= vec_lvsr(0, dst
);
253 dcplus
= vec_perm(dcplus
, dcplus
, aligner
);
254 dcminus
= vec_perm(dcminus
, dcminus
, aligner
);
256 for (i
= 0; i
< size
; i
+= 4) {
257 v0
= vec_ld(0, dst
+0*stride
);
258 v1
= vec_ld(0, dst
+1*stride
);
259 v2
= vec_ld(0, dst
+2*stride
);
260 v3
= vec_ld(0, dst
+3*stride
);
262 v0
= vec_adds(v0
, dcplus
);
263 v1
= vec_adds(v1
, dcplus
);
264 v2
= vec_adds(v2
, dcplus
);
265 v3
= vec_adds(v3
, dcplus
);
267 v0
= vec_subs(v0
, dcminus
);
268 v1
= vec_subs(v1
, dcminus
);
269 v2
= vec_subs(v2
, dcminus
);
270 v3
= vec_subs(v3
, dcminus
);
272 vec_st(v0
, 0, dst
+0*stride
);
273 vec_st(v1
, 0, dst
+1*stride
);
274 vec_st(v2
, 0, dst
+2*stride
);
275 vec_st(v3
, 0, dst
+3*stride
);
281 static void h264_idct_dc_add_altivec(uint8_t *dst
, int16_t *block
, int stride
)
283 h264_idct_dc_add_internal(dst
, block
, stride
, 4);
286 static void h264_idct8_dc_add_altivec(uint8_t *dst
, int16_t *block
, int stride
)
288 h264_idct_dc_add_internal(dst
, block
, stride
, 8);
291 static void h264_idct_add16_altivec(uint8_t *dst
, const int *block_offset
,
292 int16_t *block
, int stride
,
293 const uint8_t nnzc
[15 * 8])
297 int nnz
= nnzc
[ scan8
[i
] ];
299 if(nnz
==1 && block
[i
*16]) h264_idct_dc_add_altivec(dst
+ block_offset
[i
], block
+ i
*16, stride
);
300 else h264_idct_add_altivec(dst
+ block_offset
[i
], block
+ i
*16, stride
);
305 static void h264_idct_add16intra_altivec(uint8_t *dst
, const int *block_offset
,
306 int16_t *block
, int stride
,
307 const uint8_t nnzc
[15 * 8])
311 if(nnzc
[ scan8
[i
] ]) h264_idct_add_altivec(dst
+ block_offset
[i
], block
+ i
*16, stride
);
312 else if(block
[i
*16]) h264_idct_dc_add_altivec(dst
+ block_offset
[i
], block
+ i
*16, stride
);
316 static void h264_idct8_add4_altivec(uint8_t *dst
, const int *block_offset
,
317 int16_t *block
, int stride
,
318 const uint8_t nnzc
[15 * 8])
321 for(i
=0; i
<16; i
+=4){
322 int nnz
= nnzc
[ scan8
[i
] ];
324 if(nnz
==1 && block
[i
*16]) h264_idct8_dc_add_altivec(dst
+ block_offset
[i
], block
+ i
*16, stride
);
325 else h264_idct8_add_altivec(dst
+ block_offset
[i
], block
+ i
*16, stride
);
330 static void h264_idct_add8_altivec(uint8_t **dest
, const int *block_offset
,
331 int16_t *block
, int stride
,
332 const uint8_t nnzc
[15 * 8])
335 for (j
= 1; j
< 3; j
++) {
336 for(i
= j
* 16; i
< j
* 16 + 4; i
++){
338 h264_idct_add_altivec(dest
[j
-1] + block_offset
[i
], block
+ i
*16, stride
);
340 h264_idct_dc_add_altivec(dest
[j
-1] + block_offset
[i
], block
+ i
*16, stride
);
345 #define transpose4x16(r0, r1, r2, r3) { \
346 register vec_u8 r4; \
347 register vec_u8 r5; \
348 register vec_u8 r6; \
349 register vec_u8 r7; \
351 r4 = vec_mergeh(r0, r2); /*0, 2 set 0*/ \
352 r5 = vec_mergel(r0, r2); /*0, 2 set 1*/ \
353 r6 = vec_mergeh(r1, r3); /*1, 3 set 0*/ \
354 r7 = vec_mergel(r1, r3); /*1, 3 set 1*/ \
356 r0 = vec_mergeh(r4, r6); /*all set 0*/ \
357 r1 = vec_mergel(r4, r6); /*all set 1*/ \
358 r2 = vec_mergeh(r5, r7); /*all set 2*/ \
359 r3 = vec_mergel(r5, r7); /*all set 3*/ \
362 static inline void write16x4(uint8_t *dst
, int dst_stride
,
363 register vec_u8 r0
, register vec_u8 r1
,
364 register vec_u8 r2
, register vec_u8 r3
) {
365 DECLARE_ALIGNED(16, unsigned char, result
)[64];
366 uint32_t *src_int
= (uint32_t *)result
, *dst_int
= (uint32_t *)dst
;
367 int int_dst_stride
= dst_stride
/4;
369 vec_st(r0
, 0, result
);
370 vec_st(r1
, 16, result
);
371 vec_st(r2
, 32, result
);
372 vec_st(r3
, 48, result
);
373 /* FIXME: there has to be a better way!!!! */
375 *(dst_int
+ int_dst_stride
) = *(src_int
+ 1);
376 *(dst_int
+ 2*int_dst_stride
) = *(src_int
+ 2);
377 *(dst_int
+ 3*int_dst_stride
) = *(src_int
+ 3);
378 *(dst_int
+ 4*int_dst_stride
) = *(src_int
+ 4);
379 *(dst_int
+ 5*int_dst_stride
) = *(src_int
+ 5);
380 *(dst_int
+ 6*int_dst_stride
) = *(src_int
+ 6);
381 *(dst_int
+ 7*int_dst_stride
) = *(src_int
+ 7);
382 *(dst_int
+ 8*int_dst_stride
) = *(src_int
+ 8);
383 *(dst_int
+ 9*int_dst_stride
) = *(src_int
+ 9);
384 *(dst_int
+10*int_dst_stride
) = *(src_int
+ 10);
385 *(dst_int
+11*int_dst_stride
) = *(src_int
+ 11);
386 *(dst_int
+12*int_dst_stride
) = *(src_int
+ 12);
387 *(dst_int
+13*int_dst_stride
) = *(src_int
+ 13);
388 *(dst_int
+14*int_dst_stride
) = *(src_int
+ 14);
389 *(dst_int
+15*int_dst_stride
) = *(src_int
+ 15);
392 /** @brief performs a 6x16 transpose of data in src, and stores it to dst
393 @todo FIXME: see if we can't spare some vec_lvsl() by them factorizing
394 out of unaligned_load() */
395 #define readAndTranspose16x6(src, src_stride, r8, r9, r10, r11, r12, r13) {\
396 register vec_u8 r0 = unaligned_load(0, src); \
397 register vec_u8 r1 = unaligned_load( src_stride, src); \
398 register vec_u8 r2 = unaligned_load(2* src_stride, src); \
399 register vec_u8 r3 = unaligned_load(3* src_stride, src); \
400 register vec_u8 r4 = unaligned_load(4* src_stride, src); \
401 register vec_u8 r5 = unaligned_load(5* src_stride, src); \
402 register vec_u8 r6 = unaligned_load(6* src_stride, src); \
403 register vec_u8 r7 = unaligned_load(7* src_stride, src); \
404 register vec_u8 r14 = unaligned_load(14*src_stride, src); \
405 register vec_u8 r15 = unaligned_load(15*src_stride, src); \
407 r8 = unaligned_load( 8*src_stride, src); \
408 r9 = unaligned_load( 9*src_stride, src); \
409 r10 = unaligned_load(10*src_stride, src); \
410 r11 = unaligned_load(11*src_stride, src); \
411 r12 = unaligned_load(12*src_stride, src); \
412 r13 = unaligned_load(13*src_stride, src); \
414 /*Merge first pairs*/ \
415 r0 = vec_mergeh(r0, r8); /*0, 8*/ \
416 r1 = vec_mergeh(r1, r9); /*1, 9*/ \
417 r2 = vec_mergeh(r2, r10); /*2,10*/ \
418 r3 = vec_mergeh(r3, r11); /*3,11*/ \
419 r4 = vec_mergeh(r4, r12); /*4,12*/ \
420 r5 = vec_mergeh(r5, r13); /*5,13*/ \
421 r6 = vec_mergeh(r6, r14); /*6,14*/ \
422 r7 = vec_mergeh(r7, r15); /*7,15*/ \
424 /*Merge second pairs*/ \
425 r8 = vec_mergeh(r0, r4); /*0,4, 8,12 set 0*/ \
426 r9 = vec_mergel(r0, r4); /*0,4, 8,12 set 1*/ \
427 r10 = vec_mergeh(r1, r5); /*1,5, 9,13 set 0*/ \
428 r11 = vec_mergel(r1, r5); /*1,5, 9,13 set 1*/ \
429 r12 = vec_mergeh(r2, r6); /*2,6,10,14 set 0*/ \
430 r13 = vec_mergel(r2, r6); /*2,6,10,14 set 1*/ \
431 r14 = vec_mergeh(r3, r7); /*3,7,11,15 set 0*/ \
432 r15 = vec_mergel(r3, r7); /*3,7,11,15 set 1*/ \
435 r0 = vec_mergeh(r8, r12); /*0,2,4,6,8,10,12,14 set 0*/ \
436 r1 = vec_mergel(r8, r12); /*0,2,4,6,8,10,12,14 set 1*/ \
437 r2 = vec_mergeh(r9, r13); /*0,2,4,6,8,10,12,14 set 2*/ \
438 r4 = vec_mergeh(r10, r14); /*1,3,5,7,9,11,13,15 set 0*/ \
439 r5 = vec_mergel(r10, r14); /*1,3,5,7,9,11,13,15 set 1*/ \
440 r6 = vec_mergeh(r11, r15); /*1,3,5,7,9,11,13,15 set 2*/ \
441 /* Don't need to compute 3 and 7*/ \
444 r8 = vec_mergeh(r0, r4); /*all set 0*/ \
445 r9 = vec_mergel(r0, r4); /*all set 1*/ \
446 r10 = vec_mergeh(r1, r5); /*all set 2*/ \
447 r11 = vec_mergel(r1, r5); /*all set 3*/ \
448 r12 = vec_mergeh(r2, r6); /*all set 4*/ \
449 r13 = vec_mergel(r2, r6); /*all set 5*/ \
450 /* Don't need to compute 14 and 15*/ \
454 // out: o = |x-y| < a
455 static inline vec_u8
diff_lt_altivec ( register vec_u8 x
,
459 register vec_u8 diff
= vec_subs(x
, y
);
460 register vec_u8 diffneg
= vec_subs(y
, x
);
461 register vec_u8 o
= vec_or(diff
, diffneg
); /* |x-y| */
462 o
= (vec_u8
)vec_cmplt(o
, a
);
466 static inline vec_u8
h264_deblock_mask ( register vec_u8 p0
,
470 register vec_u8 alpha
,
471 register vec_u8 beta
) {
473 register vec_u8 mask
;
474 register vec_u8 tempmask
;
476 mask
= diff_lt_altivec(p0
, q0
, alpha
);
477 tempmask
= diff_lt_altivec(p1
, p0
, beta
);
478 mask
= vec_and(mask
, tempmask
);
479 tempmask
= diff_lt_altivec(q1
, q0
, beta
);
480 mask
= vec_and(mask
, tempmask
);
485 // out: newp1 = clip((p2 + ((p0 + q0 + 1) >> 1)) >> 1, p1-tc0, p1+tc0)
486 static inline vec_u8
h264_deblock_q1(register vec_u8 p0
,
490 register vec_u8 tc0
) {
492 register vec_u8 average
= vec_avg(p0
, q0
);
493 register vec_u8 temp
;
494 register vec_u8 uncliped
;
495 register vec_u8 ones
;
498 register vec_u8 newp1
;
500 temp
= vec_xor(average
, p2
);
501 average
= vec_avg(average
, p2
); /*avg(p2, avg(p0, q0)) */
502 ones
= vec_splat_u8(1);
503 temp
= vec_and(temp
, ones
); /*(p2^avg(p0, q0)) & 1 */
504 uncliped
= vec_subs(average
, temp
); /*(p2+((p0+q0+1)>>1))>>1 */
505 max
= vec_adds(p1
, tc0
);
506 min
= vec_subs(p1
, tc0
);
507 newp1
= vec_max(min
, uncliped
);
508 newp1
= vec_min(max
, newp1
);
512 #define h264_deblock_p0_q0(p0, p1, q0, q1, tc0masked) { \
514 const vec_u8 A0v = vec_sl(vec_splat_u8(10), vec_splat_u8(4)); \
516 register vec_u8 pq0bit = vec_xor(p0,q0); \
517 register vec_u8 q1minus; \
518 register vec_u8 p0minus; \
519 register vec_u8 stage1; \
520 register vec_u8 stage2; \
521 register vec_u8 vec160; \
522 register vec_u8 delta; \
523 register vec_u8 deltaneg; \
525 q1minus = vec_nor(q1, q1); /* 255 - q1 */ \
526 stage1 = vec_avg(p1, q1minus); /* (p1 - q1 + 256)>>1 */ \
527 stage2 = vec_sr(stage1, vec_splat_u8(1)); /* (p1 - q1 + 256)>>2 = 64 + (p1 - q1) >> 2 */ \
528 p0minus = vec_nor(p0, p0); /* 255 - p0 */ \
529 stage1 = vec_avg(q0, p0minus); /* (q0 - p0 + 256)>>1 */ \
530 pq0bit = vec_and(pq0bit, vec_splat_u8(1)); \
531 stage2 = vec_avg(stage2, pq0bit); /* 32 + ((q0 - p0)&1 + (p1 - q1) >> 2 + 1) >> 1 */ \
532 stage2 = vec_adds(stage2, stage1); /* 160 + ((p0 - q0) + (p1 - q1) >> 2 + 1) >> 1 */ \
533 vec160 = vec_ld(0, &A0v); \
534 deltaneg = vec_subs(vec160, stage2); /* -d */ \
535 delta = vec_subs(stage2, vec160); /* d */ \
536 deltaneg = vec_min(tc0masked, deltaneg); \
537 delta = vec_min(tc0masked, delta); \
538 p0 = vec_subs(p0, deltaneg); \
539 q0 = vec_subs(q0, delta); \
540 p0 = vec_adds(p0, delta); \
541 q0 = vec_adds(q0, deltaneg); \
544 #define h264_loop_filter_luma_altivec(p2, p1, p0, q0, q1, q2, alpha, beta, tc0) { \
545 DECLARE_ALIGNED(16, unsigned char, temp)[16]; \
546 register vec_u8 alphavec; \
547 register vec_u8 betavec; \
548 register vec_u8 mask; \
549 register vec_u8 p1mask; \
550 register vec_u8 q1mask; \
551 register vector signed char tc0vec; \
552 register vec_u8 finaltc0; \
553 register vec_u8 tc0masked; \
554 register vec_u8 newp1; \
555 register vec_u8 newq1; \
559 alphavec = vec_ld(0, temp); \
560 betavec = vec_splat(alphavec, 0x1); \
561 alphavec = vec_splat(alphavec, 0x0); \
562 mask = h264_deblock_mask(p0, p1, q0, q1, alphavec, betavec); /*if in block */ \
564 AV_COPY32(temp, tc0); \
565 tc0vec = vec_ld(0, (signed char*)temp); \
566 tc0vec = vec_mergeh(tc0vec, tc0vec); \
567 tc0vec = vec_mergeh(tc0vec, tc0vec); \
568 mask = vec_and(mask, vec_cmpgt(tc0vec, vec_splat_s8(-1))); /* if tc0[i] >= 0 */ \
569 finaltc0 = vec_and((vec_u8)tc0vec, mask); /* tc = tc0 */ \
571 p1mask = diff_lt_altivec(p2, p0, betavec); \
572 p1mask = vec_and(p1mask, mask); /* if ( |p2 - p0| < beta) */ \
573 tc0masked = vec_and(p1mask, (vec_u8)tc0vec); \
574 finaltc0 = vec_sub(finaltc0, p1mask); /* tc++ */ \
575 newp1 = h264_deblock_q1(p0, p1, p2, q0, tc0masked); \
578 q1mask = diff_lt_altivec(q2, q0, betavec); \
579 q1mask = vec_and(q1mask, mask); /* if ( |q2 - q0| < beta ) */\
580 tc0masked = vec_and(q1mask, (vec_u8)tc0vec); \
581 finaltc0 = vec_sub(finaltc0, q1mask); /* tc++ */ \
582 newq1 = h264_deblock_q1(p0, q1, q2, q0, tc0masked); \
585 h264_deblock_p0_q0(p0, p1, q0, q1, finaltc0); \
590 static void h264_v_loop_filter_luma_altivec(uint8_t *pix
, int stride
, int alpha
, int beta
, int8_t *tc0
) {
592 if ((tc0
[0] & tc0
[1] & tc0
[2] & tc0
[3]) >= 0) {
593 register vec_u8 p2
= vec_ld(-3*stride
, pix
);
594 register vec_u8 p1
= vec_ld(-2*stride
, pix
);
595 register vec_u8 p0
= vec_ld(-1*stride
, pix
);
596 register vec_u8 q0
= vec_ld(0, pix
);
597 register vec_u8 q1
= vec_ld(stride
, pix
);
598 register vec_u8 q2
= vec_ld(2*stride
, pix
);
599 h264_loop_filter_luma_altivec(p2
, p1
, p0
, q0
, q1
, q2
, alpha
, beta
, tc0
);
600 vec_st(p1
, -2*stride
, pix
);
601 vec_st(p0
, -1*stride
, pix
);
603 vec_st(q1
, stride
, pix
);
607 static void h264_h_loop_filter_luma_altivec(uint8_t *pix
, int stride
, int alpha
, int beta
, int8_t *tc0
) {
609 register vec_u8 line0
, line1
, line2
, line3
, line4
, line5
;
610 if ((tc0
[0] & tc0
[1] & tc0
[2] & tc0
[3]) < 0)
612 readAndTranspose16x6(pix
-3, stride
, line0
, line1
, line2
, line3
, line4
, line5
);
613 h264_loop_filter_luma_altivec(line0
, line1
, line2
, line3
, line4
, line5
, alpha
, beta
, tc0
);
614 transpose4x16(line1
, line2
, line3
, line4
);
615 write16x4(pix
-2, stride
, line1
, line2
, line3
, line4
);
618 static av_always_inline
619 void weight_h264_W_altivec(uint8_t *block
, int stride
, int height
,
620 int log2_denom
, int weight
, int offset
, int w
)
624 vec_s16 vtemp
, vweight
, voffset
, v0
, v1
;
626 DECLARE_ALIGNED(16, int32_t, temp
)[4];
629 offset
<<= log2_denom
;
630 if(log2_denom
) offset
+= 1<<(log2_denom
-1);
631 temp
[0] = log2_denom
;
635 vtemp
= (vec_s16
)vec_ld(0, temp
);
636 vlog2_denom
= (vec_u16
)vec_splat(vtemp
, 1);
637 vweight
= vec_splat(vtemp
, 3);
638 voffset
= vec_splat(vtemp
, 5);
639 aligned
= !((unsigned long)block
& 0xf);
641 for (y
= 0; y
< height
; y
++) {
642 vblock
= vec_ld(0, block
);
644 v0
= (vec_s16
)vec_mergeh(zero_u8v
, vblock
);
645 v1
= (vec_s16
)vec_mergel(zero_u8v
, vblock
);
647 if (w
== 16 || aligned
) {
648 v0
= vec_mladd(v0
, vweight
, zero_s16v
);
649 v0
= vec_adds(v0
, voffset
);
650 v0
= vec_sra(v0
, vlog2_denom
);
652 if (w
== 16 || !aligned
) {
653 v1
= vec_mladd(v1
, vweight
, zero_s16v
);
654 v1
= vec_adds(v1
, voffset
);
655 v1
= vec_sra(v1
, vlog2_denom
);
657 vblock
= vec_packsu(v0
, v1
);
658 vec_st(vblock
, 0, block
);
664 static av_always_inline
665 void biweight_h264_W_altivec(uint8_t *dst
, uint8_t *src
, int stride
, int height
,
666 int log2_denom
, int weightd
, int weights
, int offset
, int w
)
668 int y
, dst_aligned
, src_aligned
;
670 vec_s16 vtemp
, vweights
, vweightd
, voffset
, v0
, v1
, v2
, v3
;
672 DECLARE_ALIGNED(16, int32_t, temp
)[4];
675 offset
= ((offset
+ 1) | 1) << log2_denom
;
676 temp
[0] = log2_denom
+1;
681 vtemp
= (vec_s16
)vec_ld(0, temp
);
682 vlog2_denom
= (vec_u16
)vec_splat(vtemp
, 1);
683 vweights
= vec_splat(vtemp
, 3);
684 vweightd
= vec_splat(vtemp
, 5);
685 voffset
= vec_splat(vtemp
, 7);
686 dst_aligned
= !((unsigned long)dst
& 0xf);
687 src_aligned
= !((unsigned long)src
& 0xf);
689 for (y
= 0; y
< height
; y
++) {
690 vdst
= vec_ld(0, dst
);
691 vsrc
= vec_ld(0, src
);
693 v0
= (vec_s16
)vec_mergeh(zero_u8v
, vdst
);
694 v1
= (vec_s16
)vec_mergel(zero_u8v
, vdst
);
695 v2
= (vec_s16
)vec_mergeh(zero_u8v
, vsrc
);
696 v3
= (vec_s16
)vec_mergel(zero_u8v
, vsrc
);
705 if (w
== 16 || dst_aligned
) {
706 v0
= vec_mladd(v0
, vweightd
, zero_s16v
);
707 v2
= vec_mladd(v2
, vweights
, zero_s16v
);
709 v0
= vec_adds(v0
, voffset
);
710 v0
= vec_adds(v0
, v2
);
711 v0
= vec_sra(v0
, vlog2_denom
);
713 if (w
== 16 || !dst_aligned
) {
714 v1
= vec_mladd(v1
, vweightd
, zero_s16v
);
715 v3
= vec_mladd(v3
, vweights
, zero_s16v
);
717 v1
= vec_adds(v1
, voffset
);
718 v1
= vec_adds(v1
, v3
);
719 v1
= vec_sra(v1
, vlog2_denom
);
721 vdst
= vec_packsu(v0
, v1
);
722 vec_st(vdst
, 0, dst
);
729 #define H264_WEIGHT(W) \
730 static void weight_h264_pixels ## W ## _altivec(uint8_t *block, int stride, int height, \
731 int log2_denom, int weight, int offset) \
733 weight_h264_W_altivec(block, stride, height, log2_denom, weight, offset, W); \
735 static void biweight_h264_pixels ## W ## _altivec(uint8_t *dst, uint8_t *src, int stride, int height, \
736 int log2_denom, int weightd, int weights, int offset) \
738 biweight_h264_W_altivec(dst, src, stride, height, log2_denom, weightd, weights, offset, W); \
743 #endif /* HAVE_ALTIVEC */
745 av_cold
void ff_h264dsp_init_ppc(H264DSPContext
*c
, const int bit_depth
,
746 const int chroma_format_idc
)
749 if (!PPC_ALTIVEC(av_get_cpu_flags()))
752 if (bit_depth
== 8) {
753 c
->h264_idct_add
= h264_idct_add_altivec
;
754 if (chroma_format_idc
<= 1)
755 c
->h264_idct_add8
= h264_idct_add8_altivec
;
756 c
->h264_idct_add16
= h264_idct_add16_altivec
;
757 c
->h264_idct_add16intra
= h264_idct_add16intra_altivec
;
758 c
->h264_idct_dc_add
= h264_idct_dc_add_altivec
;
759 c
->h264_idct8_dc_add
= h264_idct8_dc_add_altivec
;
760 c
->h264_idct8_add
= h264_idct8_add_altivec
;
761 c
->h264_idct8_add4
= h264_idct8_add4_altivec
;
762 c
->h264_v_loop_filter_luma
= h264_v_loop_filter_luma_altivec
;
763 c
->h264_h_loop_filter_luma
= h264_h_loop_filter_luma_altivec
;
765 c
->weight_h264_pixels_tab
[0] = weight_h264_pixels16_altivec
;
766 c
->weight_h264_pixels_tab
[1] = weight_h264_pixels8_altivec
;
767 c
->biweight_h264_pixels_tab
[0] = biweight_h264_pixels16_altivec
;
768 c
->biweight_h264_pixels_tab
[1] = biweight_h264_pixels8_altivec
;
770 #endif /* HAVE_ALTIVEC */