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 )
66 #define vdst_load(d) \
67 vdst_orig = vec_ld(0, dst); \
68 vdst = vec_perm(vdst_orig, zero_u8v, vdst_mask);
70 #define vdst_load(d) vdst = vec_vsx_ld(0, dst)
73 #define VEC_LOAD_U8_ADD_S16_STORE_U8(va) \
75 vdst_ss = (vec_s16) VEC_MERGEH(zero_u8v, vdst); \
76 va = vec_add(va, vdst_ss); \
77 va_u8 = vec_packsu(va, zero_s16v); \
78 va_u32 = vec_splat((vec_u32)va_u8, 0); \
79 vec_ste(va_u32, element, (uint32_t*)dst);
81 static void h264_idct_add_altivec(uint8_t *dst, int16_t *block, int stride)
83 vec_s16 va0, va1, va2, va3;
84 vec_s16 vz0, vz1, vz2, vz3;
85 vec_s16 vtmp0, vtmp1, vtmp2, vtmp3;
89 const vec_u16 v6us = vec_splat_u16(6);
90 vec_u8 vdst, vdst_orig;
91 vec_u8 vdst_mask = vec_lvsl(0, dst);
92 int element = ((unsigned long)dst & 0xf) >> 2;
95 block[0] += 32; /* add 32 as a DC-level for rounding */
97 vtmp0 = vec_ld(0,block);
98 vtmp1 = vec_sld(vtmp0, vtmp0, 8);
99 vtmp2 = vec_ld(16,block);
100 vtmp3 = vec_sld(vtmp2, vtmp2, 8);
101 memset(block, 0, 16 * sizeof(int16_t));
103 VEC_1D_DCT(vtmp0,vtmp1,vtmp2,vtmp3,va0,va1,va2,va3);
104 VEC_TRANSPOSE_4(va0,va1,va2,va3,vtmp0,vtmp1,vtmp2,vtmp3);
105 VEC_1D_DCT(vtmp0,vtmp1,vtmp2,vtmp3,va0,va1,va2,va3);
107 va0 = vec_sra(va0,v6us);
108 va1 = vec_sra(va1,v6us);
109 va2 = vec_sra(va2,v6us);
110 va3 = vec_sra(va3,v6us);
112 VEC_LOAD_U8_ADD_S16_STORE_U8(va0);
114 VEC_LOAD_U8_ADD_S16_STORE_U8(va1);
116 VEC_LOAD_U8_ADD_S16_STORE_U8(va2);
118 VEC_LOAD_U8_ADD_S16_STORE_U8(va3);
121 #define IDCT8_1D_ALTIVEC(s0, s1, s2, s3, s4, s5, s6, s7, d0, d1, d2, d3, d4, d5, d6, d7) {\
122 /* a0 = SRC(0) + SRC(4); */ \
123 vec_s16 a0v = vec_add(s0, s4); \
124 /* a2 = SRC(0) - SRC(4); */ \
125 vec_s16 a2v = vec_sub(s0, s4); \
126 /* a4 = (SRC(2)>>1) - SRC(6); */ \
127 vec_s16 a4v = vec_sub(vec_sra(s2, onev), s6); \
128 /* a6 = (SRC(6)>>1) + SRC(2); */ \
129 vec_s16 a6v = vec_add(vec_sra(s6, onev), s2); \
130 /* b0 = a0 + a6; */ \
131 vec_s16 b0v = vec_add(a0v, a6v); \
132 /* b2 = a2 + a4; */ \
133 vec_s16 b2v = vec_add(a2v, a4v); \
134 /* b4 = a2 - a4; */ \
135 vec_s16 b4v = vec_sub(a2v, a4v); \
136 /* b6 = a0 - a6; */ \
137 vec_s16 b6v = vec_sub(a0v, a6v); \
138 /* a1 = SRC(5) - SRC(3) - SRC(7) - (SRC(7)>>1); */ \
139 /* a1 = (SRC(5)-SRC(3)) - (SRC(7) + (SRC(7)>>1)); */ \
140 vec_s16 a1v = vec_sub( vec_sub(s5, s3), vec_add(s7, vec_sra(s7, onev)) ); \
141 /* a3 = SRC(7) + SRC(1) - SRC(3) - (SRC(3)>>1); */ \
142 /* a3 = (SRC(7)+SRC(1)) - (SRC(3) + (SRC(3)>>1)); */ \
143 vec_s16 a3v = vec_sub( vec_add(s7, s1), vec_add(s3, vec_sra(s3, onev)) );\
144 /* a5 = SRC(7) - SRC(1) + SRC(5) + (SRC(5)>>1); */ \
145 /* a5 = (SRC(7)-SRC(1)) + SRC(5) + (SRC(5)>>1); */ \
146 vec_s16 a5v = vec_add( vec_sub(s7, s1), vec_add(s5, vec_sra(s5, onev)) );\
147 /* a7 = SRC(5)+SRC(3) + SRC(1) + (SRC(1)>>1); */ \
148 vec_s16 a7v = vec_add( vec_add(s5, s3), vec_add(s1, vec_sra(s1, onev)) );\
149 /* b1 = (a7>>2) + a1; */ \
150 vec_s16 b1v = vec_add( vec_sra(a7v, twov), a1v); \
151 /* b3 = a3 + (a5>>2); */ \
152 vec_s16 b3v = vec_add(a3v, vec_sra(a5v, twov)); \
153 /* b5 = (a3>>2) - a5; */ \
154 vec_s16 b5v = vec_sub( vec_sra(a3v, twov), a5v); \
155 /* b7 = a7 - (a1>>2); */ \
156 vec_s16 b7v = vec_sub( a7v, vec_sra(a1v, twov)); \
157 /* DST(0, b0 + b7); */ \
158 d0 = vec_add(b0v, b7v); \
159 /* DST(1, b2 + b5); */ \
160 d1 = vec_add(b2v, b5v); \
161 /* DST(2, b4 + b3); */ \
162 d2 = vec_add(b4v, b3v); \
163 /* DST(3, b6 + b1); */ \
164 d3 = vec_add(b6v, b1v); \
165 /* DST(4, b6 - b1); */ \
166 d4 = vec_sub(b6v, b1v); \
167 /* DST(5, b4 - b3); */ \
168 d5 = vec_sub(b4v, b3v); \
169 /* DST(6, b2 - b5); */ \
170 d6 = vec_sub(b2v, b5v); \
171 /* DST(7, b0 - b7); */ \
172 d7 = vec_sub(b0v, b7v); \
176 #define GET_2PERM(ldv, stv, d) \
177 ldv = vec_lvsl(0, d); \
178 stv = vec_lvsr(8, d);
179 #define dstv_load(d) \
180 vec_u8 hv = vec_ld( 0, d ); \
181 vec_u8 lv = vec_ld( 7, d); \
182 vec_u8 dstv = vec_perm( hv, lv, (vec_u8)perm_ldv );
183 #define dest_unligned_store(d) \
185 vec_u8 bodyv = vec_perm( idstsum8, idstsum8, perm_stv ); \
186 vec_u8 edgelv = vec_perm( sel, zero_u8v, perm_stv ); \
187 lv = vec_sel( lv, bodyv, edgelv ); \
188 vec_st( lv, 7, d ); \
189 hv = vec_ld( 0, d ); \
190 edgehv = vec_perm( zero_u8v, sel, perm_stv ); \
191 hv = vec_sel( hv, bodyv, edgehv ); \
195 #define GET_2PERM(ldv, stv, d) {}
196 #define dstv_load(d) vec_u8 dstv = vec_vsx_ld(0, d)
197 #define dest_unligned_store(d)\
198 vec_u8 dst8 = vec_perm((vec_u8)idstsum8, dstv, vcprm(2,3,s2,s3));\
199 vec_vsx_st(dst8, 0, d)
200 #endif /* HAVE_BIGENDIAN */
202 #define ALTIVEC_STORE_SUM_CLIP(dest, idctv, perm_ldv, perm_stv, sel) { \
203 /* unaligned load */ \
205 vec_s16 idct_sh6 = vec_sra(idctv, sixv); \
206 vec_u16 dst16 = (vec_u16)VEC_MERGEH(zero_u8v, dstv); \
207 vec_s16 idstsum = vec_adds(idct_sh6, (vec_s16)dst16); \
208 vec_u8 idstsum8 = vec_packsu(zero_s16v, idstsum); \
209 /* unaligned store */ \
210 dest_unligned_store(dest);\
213 static void h264_idct8_add_altivec(uint8_t *dst, int16_t *dct, int stride)
215 vec_s16 s0, s1, s2, s3, s4, s5, s6, s7;
216 vec_s16 d0, d1, d2, d3, d4, d5, d6, d7;
217 vec_s16 idct0, idct1, idct2, idct3, idct4, idct5, idct6, idct7;
219 vec_u8 perm_ldv, perm_stv;
220 GET_2PERM(perm_ldv, perm_stv, dst);
222 const vec_u16 onev = vec_splat_u16(1);
223 const vec_u16 twov = vec_splat_u16(2);
224 const vec_u16 sixv = vec_splat_u16(6);
226 const vec_u8 sel = (vec_u8) {0,0,0,0,0,0,0,0,-1,-1,-1,-1,-1,-1,-1,-1};
229 dct[0] += 32; // rounding for the >>6 at the end
231 s0 = vec_ld(0x00, (int16_t*)dct);
232 s1 = vec_ld(0x10, (int16_t*)dct);
233 s2 = vec_ld(0x20, (int16_t*)dct);
234 s3 = vec_ld(0x30, (int16_t*)dct);
235 s4 = vec_ld(0x40, (int16_t*)dct);
236 s5 = vec_ld(0x50, (int16_t*)dct);
237 s6 = vec_ld(0x60, (int16_t*)dct);
238 s7 = vec_ld(0x70, (int16_t*)dct);
239 memset(dct, 0, 64 * sizeof(int16_t));
241 IDCT8_1D_ALTIVEC(s0, s1, s2, s3, s4, s5, s6, s7,
242 d0, d1, d2, d3, d4, d5, d6, d7);
244 TRANSPOSE8( d0, d1, d2, d3, d4, d5, d6, d7 );
246 IDCT8_1D_ALTIVEC(d0, d1, d2, d3, d4, d5, d6, d7,
247 idct0, idct1, idct2, idct3, idct4, idct5, idct6, idct7);
249 ALTIVEC_STORE_SUM_CLIP(&dst[0*stride], idct0, perm_ldv, perm_stv, sel);
250 ALTIVEC_STORE_SUM_CLIP(&dst[1*stride], idct1, perm_ldv, perm_stv, sel);
251 ALTIVEC_STORE_SUM_CLIP(&dst[2*stride], idct2, perm_ldv, perm_stv, sel);
252 ALTIVEC_STORE_SUM_CLIP(&dst[3*stride], idct3, perm_ldv, perm_stv, sel);
253 ALTIVEC_STORE_SUM_CLIP(&dst[4*stride], idct4, perm_ldv, perm_stv, sel);
254 ALTIVEC_STORE_SUM_CLIP(&dst[5*stride], idct5, perm_ldv, perm_stv, sel);
255 ALTIVEC_STORE_SUM_CLIP(&dst[6*stride], idct6, perm_ldv, perm_stv, sel);
256 ALTIVEC_STORE_SUM_CLIP(&dst[7*stride], idct7, perm_ldv, perm_stv, sel);
260 #define DST_LD vec_ld
262 #define DST_LD vec_vsx_ld
264 static av_always_inline void h264_idct_dc_add_internal(uint8_t *dst, int16_t *block, int stride, int size)
267 vec_u8 dcplus, dcminus, v0, v1, v2, v3, aligner;
270 DECLARE_ALIGNED(16, int, dc);
273 dc = (block[0] + 32) >> 6;
275 v_dc32 = vec_lde(0, &dc);
276 dc16 = VEC_SPLAT16((vec_s16)v_dc32, 1);
279 dc16 = VEC_SLD16(dc16, zero_s16v, 8);
280 dcplus = vec_packsu(dc16, zero_s16v);
281 dcminus = vec_packsu(vec_sub(zero_s16v, dc16), zero_s16v);
284 aligner = vec_lvsr(0, dst);
285 dcplus = vec_perm(dcplus, dcplus, aligner);
286 dcminus = vec_perm(dcminus, dcminus, aligner);
289 for (i = 0; i < size; i += 4) {
290 v0 = DST_LD(0, dst+0*stride);
291 v1 = DST_LD(0, dst+1*stride);
292 v2 = DST_LD(0, dst+2*stride);
293 v3 = DST_LD(0, dst+3*stride);
295 v0 = vec_adds(v0, dcplus);
296 v1 = vec_adds(v1, dcplus);
297 v2 = vec_adds(v2, dcplus);
298 v3 = vec_adds(v3, dcplus);
300 v0 = vec_subs(v0, dcminus);
301 v1 = vec_subs(v1, dcminus);
302 v2 = vec_subs(v2, dcminus);
303 v3 = vec_subs(v3, dcminus);
305 VEC_ST(v0, 0, dst+0*stride);
306 VEC_ST(v1, 0, dst+1*stride);
307 VEC_ST(v2, 0, dst+2*stride);
308 VEC_ST(v3, 0, dst+3*stride);
314 static void h264_idct_dc_add_altivec(uint8_t *dst, int16_t *block, int stride)
316 h264_idct_dc_add_internal(dst, block, stride, 4);
319 static void h264_idct8_dc_add_altivec(uint8_t *dst, int16_t *block, int stride)
321 h264_idct_dc_add_internal(dst, block, stride, 8);
324 static void h264_idct_add16_altivec(uint8_t *dst, const int *block_offset,
325 int16_t *block, int stride,
326 const uint8_t nnzc[15 * 8])
330 int nnz = nnzc[ scan8[i] ];
332 if(nnz==1 && block[i*16]) h264_idct_dc_add_altivec(dst + block_offset[i], block + i*16, stride);
333 else h264_idct_add_altivec(dst + block_offset[i], block + i*16, stride);
338 static void h264_idct_add16intra_altivec(uint8_t *dst, const int *block_offset,
339 int16_t *block, int stride,
340 const uint8_t nnzc[15 * 8])
344 if(nnzc[ scan8[i] ]) h264_idct_add_altivec(dst + block_offset[i], block + i*16, stride);
345 else if(block[i*16]) h264_idct_dc_add_altivec(dst + block_offset[i], block + i*16, stride);
349 static void h264_idct8_add4_altivec(uint8_t *dst, const int *block_offset,
350 int16_t *block, int stride,
351 const uint8_t nnzc[15 * 8])
354 for(i=0; i<16; i+=4){
355 int nnz = nnzc[ scan8[i] ];
357 if(nnz==1 && block[i*16]) h264_idct8_dc_add_altivec(dst + block_offset[i], block + i*16, stride);
358 else h264_idct8_add_altivec(dst + block_offset[i], block + i*16, stride);
363 static void h264_idct_add8_altivec(uint8_t **dest, const int *block_offset,
364 int16_t *block, int stride,
365 const uint8_t nnzc[15 * 8])
368 for (j = 1; j < 3; j++) {
369 for(i = j * 16; i < j * 16 + 4; i++){
371 h264_idct_add_altivec(dest[j-1] + block_offset[i], block + i*16, stride);
373 h264_idct_dc_add_altivec(dest[j-1] + block_offset[i], block + i*16, stride);
378 #define transpose4x16(r0, r1, r2, r3) { \
379 register vec_u8 r4; \
380 register vec_u8 r5; \
381 register vec_u8 r6; \
382 register vec_u8 r7; \
384 r4 = vec_mergeh(r0, r2); /*0, 2 set 0*/ \
385 r5 = vec_mergel(r0, r2); /*0, 2 set 1*/ \
386 r6 = vec_mergeh(r1, r3); /*1, 3 set 0*/ \
387 r7 = vec_mergel(r1, r3); /*1, 3 set 1*/ \
389 r0 = vec_mergeh(r4, r6); /*all set 0*/ \
390 r1 = vec_mergel(r4, r6); /*all set 1*/ \
391 r2 = vec_mergeh(r5, r7); /*all set 2*/ \
392 r3 = vec_mergel(r5, r7); /*all set 3*/ \
395 static inline void write16x4(uint8_t *dst, int dst_stride,
396 register vec_u8 r0, register vec_u8 r1,
397 register vec_u8 r2, register vec_u8 r3) {
398 DECLARE_ALIGNED(16, unsigned char, result)[64];
399 uint32_t *src_int = (uint32_t *)result, *dst_int = (uint32_t *)dst;
400 int int_dst_stride = dst_stride/4;
402 vec_st(r0, 0, result);
403 vec_st(r1, 16, result);
404 vec_st(r2, 32, result);
405 vec_st(r3, 48, result);
406 /* FIXME: there has to be a better way!!!! */
408 *(dst_int+ int_dst_stride) = *(src_int + 1);
409 *(dst_int+ 2*int_dst_stride) = *(src_int + 2);
410 *(dst_int+ 3*int_dst_stride) = *(src_int + 3);
411 *(dst_int+ 4*int_dst_stride) = *(src_int + 4);
412 *(dst_int+ 5*int_dst_stride) = *(src_int + 5);
413 *(dst_int+ 6*int_dst_stride) = *(src_int + 6);
414 *(dst_int+ 7*int_dst_stride) = *(src_int + 7);
415 *(dst_int+ 8*int_dst_stride) = *(src_int + 8);
416 *(dst_int+ 9*int_dst_stride) = *(src_int + 9);
417 *(dst_int+10*int_dst_stride) = *(src_int + 10);
418 *(dst_int+11*int_dst_stride) = *(src_int + 11);
419 *(dst_int+12*int_dst_stride) = *(src_int + 12);
420 *(dst_int+13*int_dst_stride) = *(src_int + 13);
421 *(dst_int+14*int_dst_stride) = *(src_int + 14);
422 *(dst_int+15*int_dst_stride) = *(src_int + 15);
425 /** @brief performs a 6x16 transpose of data in src, and stores it to dst
426 @todo FIXME: see if we can't spare some vec_lvsl() by them factorizing
427 out of unaligned_load() */
428 #define readAndTranspose16x6(src, src_stride, r8, r9, r10, r11, r12, r13) {\
429 register vec_u8 r0 = unaligned_load(0, src); \
430 register vec_u8 r1 = unaligned_load( src_stride, src); \
431 register vec_u8 r2 = unaligned_load(2* src_stride, src); \
432 register vec_u8 r3 = unaligned_load(3* src_stride, src); \
433 register vec_u8 r4 = unaligned_load(4* src_stride, src); \
434 register vec_u8 r5 = unaligned_load(5* src_stride, src); \
435 register vec_u8 r6 = unaligned_load(6* src_stride, src); \
436 register vec_u8 r7 = unaligned_load(7* src_stride, src); \
437 register vec_u8 r14 = unaligned_load(14*src_stride, src); \
438 register vec_u8 r15 = unaligned_load(15*src_stride, src); \
440 r8 = unaligned_load( 8*src_stride, src); \
441 r9 = unaligned_load( 9*src_stride, src); \
442 r10 = unaligned_load(10*src_stride, src); \
443 r11 = unaligned_load(11*src_stride, src); \
444 r12 = unaligned_load(12*src_stride, src); \
445 r13 = unaligned_load(13*src_stride, src); \
447 /*Merge first pairs*/ \
448 r0 = vec_mergeh(r0, r8); /*0, 8*/ \
449 r1 = vec_mergeh(r1, r9); /*1, 9*/ \
450 r2 = vec_mergeh(r2, r10); /*2,10*/ \
451 r3 = vec_mergeh(r3, r11); /*3,11*/ \
452 r4 = vec_mergeh(r4, r12); /*4,12*/ \
453 r5 = vec_mergeh(r5, r13); /*5,13*/ \
454 r6 = vec_mergeh(r6, r14); /*6,14*/ \
455 r7 = vec_mergeh(r7, r15); /*7,15*/ \
457 /*Merge second pairs*/ \
458 r8 = vec_mergeh(r0, r4); /*0,4, 8,12 set 0*/ \
459 r9 = vec_mergel(r0, r4); /*0,4, 8,12 set 1*/ \
460 r10 = vec_mergeh(r1, r5); /*1,5, 9,13 set 0*/ \
461 r11 = vec_mergel(r1, r5); /*1,5, 9,13 set 1*/ \
462 r12 = vec_mergeh(r2, r6); /*2,6,10,14 set 0*/ \
463 r13 = vec_mergel(r2, r6); /*2,6,10,14 set 1*/ \
464 r14 = vec_mergeh(r3, r7); /*3,7,11,15 set 0*/ \
465 r15 = vec_mergel(r3, r7); /*3,7,11,15 set 1*/ \
468 r0 = vec_mergeh(r8, r12); /*0,2,4,6,8,10,12,14 set 0*/ \
469 r1 = vec_mergel(r8, r12); /*0,2,4,6,8,10,12,14 set 1*/ \
470 r2 = vec_mergeh(r9, r13); /*0,2,4,6,8,10,12,14 set 2*/ \
471 r4 = vec_mergeh(r10, r14); /*1,3,5,7,9,11,13,15 set 0*/ \
472 r5 = vec_mergel(r10, r14); /*1,3,5,7,9,11,13,15 set 1*/ \
473 r6 = vec_mergeh(r11, r15); /*1,3,5,7,9,11,13,15 set 2*/ \
474 /* Don't need to compute 3 and 7*/ \
477 r8 = vec_mergeh(r0, r4); /*all set 0*/ \
478 r9 = vec_mergel(r0, r4); /*all set 1*/ \
479 r10 = vec_mergeh(r1, r5); /*all set 2*/ \
480 r11 = vec_mergel(r1, r5); /*all set 3*/ \
481 r12 = vec_mergeh(r2, r6); /*all set 4*/ \
482 r13 = vec_mergel(r2, r6); /*all set 5*/ \
483 /* Don't need to compute 14 and 15*/ \
487 // out: o = |x-y| < a
488 static inline vec_u8 diff_lt_altivec ( register vec_u8 x,
492 register vec_u8 diff = vec_subs(x, y);
493 register vec_u8 diffneg = vec_subs(y, x);
494 register vec_u8 o = vec_or(diff, diffneg); /* |x-y| */
495 o = (vec_u8)vec_cmplt(o, a);
499 static inline vec_u8 h264_deblock_mask ( register vec_u8 p0,
503 register vec_u8 alpha,
504 register vec_u8 beta) {
506 register vec_u8 mask;
507 register vec_u8 tempmask;
509 mask = diff_lt_altivec(p0, q0, alpha);
510 tempmask = diff_lt_altivec(p1, p0, beta);
511 mask = vec_and(mask, tempmask);
512 tempmask = diff_lt_altivec(q1, q0, beta);
513 mask = vec_and(mask, tempmask);
518 // out: newp1 = clip((p2 + ((p0 + q0 + 1) >> 1)) >> 1, p1-tc0, p1+tc0)
519 static inline vec_u8 h264_deblock_q1(register vec_u8 p0,
523 register vec_u8 tc0) {
525 register vec_u8 average = vec_avg(p0, q0);
526 register vec_u8 temp;
527 register vec_u8 uncliped;
528 register vec_u8 ones;
531 register vec_u8 newp1;
533 temp = vec_xor(average, p2);
534 average = vec_avg(average, p2); /*avg(p2, avg(p0, q0)) */
535 ones = vec_splat_u8(1);
536 temp = vec_and(temp, ones); /*(p2^avg(p0, q0)) & 1 */
537 uncliped = vec_subs(average, temp); /*(p2+((p0+q0+1)>>1))>>1 */
538 max = vec_adds(p1, tc0);
539 min = vec_subs(p1, tc0);
540 newp1 = vec_max(min, uncliped);
541 newp1 = vec_min(max, newp1);
545 #define h264_deblock_p0_q0(p0, p1, q0, q1, tc0masked) { \
547 const vec_u8 A0v = vec_sl(vec_splat_u8(10), vec_splat_u8(4)); \
549 register vec_u8 pq0bit = vec_xor(p0,q0); \
550 register vec_u8 q1minus; \
551 register vec_u8 p0minus; \
552 register vec_u8 stage1; \
553 register vec_u8 stage2; \
554 register vec_u8 vec160; \
555 register vec_u8 delta; \
556 register vec_u8 deltaneg; \
558 q1minus = vec_nor(q1, q1); /* 255 - q1 */ \
559 stage1 = vec_avg(p1, q1minus); /* (p1 - q1 + 256)>>1 */ \
560 stage2 = vec_sr(stage1, vec_splat_u8(1)); /* (p1 - q1 + 256)>>2 = 64 + (p1 - q1) >> 2 */ \
561 p0minus = vec_nor(p0, p0); /* 255 - p0 */ \
562 stage1 = vec_avg(q0, p0minus); /* (q0 - p0 + 256)>>1 */ \
563 pq0bit = vec_and(pq0bit, vec_splat_u8(1)); \
564 stage2 = vec_avg(stage2, pq0bit); /* 32 + ((q0 - p0)&1 + (p1 - q1) >> 2 + 1) >> 1 */ \
565 stage2 = vec_adds(stage2, stage1); /* 160 + ((p0 - q0) + (p1 - q1) >> 2 + 1) >> 1 */ \
566 vec160 = vec_ld(0, &A0v); \
567 deltaneg = vec_subs(vec160, stage2); /* -d */ \
568 delta = vec_subs(stage2, vec160); /* d */ \
569 deltaneg = vec_min(tc0masked, deltaneg); \
570 delta = vec_min(tc0masked, delta); \
571 p0 = vec_subs(p0, deltaneg); \
572 q0 = vec_subs(q0, delta); \
573 p0 = vec_adds(p0, delta); \
574 q0 = vec_adds(q0, deltaneg); \
577 #define h264_loop_filter_luma_altivec(p2, p1, p0, q0, q1, q2, alpha, beta, tc0) { \
578 DECLARE_ALIGNED(16, unsigned char, temp)[16]; \
579 register vec_u8 alphavec; \
580 register vec_u8 betavec; \
581 register vec_u8 mask; \
582 register vec_u8 p1mask; \
583 register vec_u8 q1mask; \
584 register vector signed char tc0vec; \
585 register vec_u8 finaltc0; \
586 register vec_u8 tc0masked; \
587 register vec_u8 newp1; \
588 register vec_u8 newq1; \
592 alphavec = vec_ld(0, temp); \
593 betavec = vec_splat(alphavec, 0x1); \
594 alphavec = vec_splat(alphavec, 0x0); \
595 mask = h264_deblock_mask(p0, p1, q0, q1, alphavec, betavec); /*if in block */ \
597 AV_COPY32(temp, tc0); \
598 tc0vec = vec_ld(0, (signed char*)temp); \
599 tc0vec = vec_mergeh(tc0vec, tc0vec); \
600 tc0vec = vec_mergeh(tc0vec, tc0vec); \
601 mask = vec_and(mask, vec_cmpgt(tc0vec, vec_splat_s8(-1))); /* if tc0[i] >= 0 */ \
602 finaltc0 = vec_and((vec_u8)tc0vec, mask); /* tc = tc0 */ \
604 p1mask = diff_lt_altivec(p2, p0, betavec); \
605 p1mask = vec_and(p1mask, mask); /* if ( |p2 - p0| < beta) */ \
606 tc0masked = vec_and(p1mask, (vec_u8)tc0vec); \
607 finaltc0 = vec_sub(finaltc0, p1mask); /* tc++ */ \
608 newp1 = h264_deblock_q1(p0, p1, p2, q0, tc0masked); \
611 q1mask = diff_lt_altivec(q2, q0, betavec); \
612 q1mask = vec_and(q1mask, mask); /* if ( |q2 - q0| < beta ) */\
613 tc0masked = vec_and(q1mask, (vec_u8)tc0vec); \
614 finaltc0 = vec_sub(finaltc0, q1mask); /* tc++ */ \
615 newq1 = h264_deblock_q1(p0, q1, q2, q0, tc0masked); \
618 h264_deblock_p0_q0(p0, p1, q0, q1, finaltc0); \
623 static void h264_v_loop_filter_luma_altivec(uint8_t *pix, int stride, int alpha, int beta, int8_t *tc0) {
625 if ((tc0[0] & tc0[1] & tc0[2] & tc0[3]) >= 0) {
626 register vec_u8 p2 = vec_ld(-3*stride, pix);
627 register vec_u8 p1 = vec_ld(-2*stride, pix);
628 register vec_u8 p0 = vec_ld(-1*stride, pix);
629 register vec_u8 q0 = vec_ld(0, pix);
630 register vec_u8 q1 = vec_ld(stride, pix);
631 register vec_u8 q2 = vec_ld(2*stride, pix);
632 h264_loop_filter_luma_altivec(p2, p1, p0, q0, q1, q2, alpha, beta, tc0);
633 vec_st(p1, -2*stride, pix);
634 vec_st(p0, -1*stride, pix);
636 vec_st(q1, stride, pix);
640 static void h264_h_loop_filter_luma_altivec(uint8_t *pix, int stride, int alpha, int beta, int8_t *tc0) {
642 register vec_u8 line0, line1, line2, line3, line4, line5;
643 if ((tc0[0] & tc0[1] & tc0[2] & tc0[3]) < 0)
645 readAndTranspose16x6(pix-3, stride, line0, line1, line2, line3, line4, line5);
646 h264_loop_filter_luma_altivec(line0, line1, line2, line3, line4, line5, alpha, beta, tc0);
647 transpose4x16(line1, line2, line3, line4);
648 write16x4(pix-2, stride, line1, line2, line3, line4);
651 static av_always_inline
652 void weight_h264_W_altivec(uint8_t *block, int stride, int height,
653 int log2_denom, int weight, int offset, int w)
657 vec_s16 vtemp, vweight, voffset, v0, v1;
659 DECLARE_ALIGNED(16, int32_t, temp)[4];
662 offset <<= log2_denom;
663 if(log2_denom) offset += 1<<(log2_denom-1);
664 temp[0] = log2_denom;
668 vtemp = (vec_s16)vec_ld(0, temp);
670 vtemp =(vec_s16)vec_perm(vtemp, vtemp, vcswapi2s(0,1,2,3));
672 vlog2_denom = (vec_u16)vec_splat(vtemp, 1);
673 vweight = vec_splat(vtemp, 3);
674 voffset = vec_splat(vtemp, 5);
675 aligned = !((unsigned long)block & 0xf);
677 for (y = 0; y < height; y++) {
678 vblock = vec_ld(0, block);
680 v0 = (vec_s16)VEC_MERGEH(zero_u8v, vblock);
681 v1 = (vec_s16)VEC_MERGEL(zero_u8v, vblock);
683 if (w == 16 || aligned) {
684 v0 = vec_mladd(v0, vweight, zero_s16v);
685 v0 = vec_adds(v0, voffset);
686 v0 = vec_sra(v0, vlog2_denom);
688 if (w == 16 || !aligned) {
689 v1 = vec_mladd(v1, vweight, zero_s16v);
690 v1 = vec_adds(v1, voffset);
691 v1 = vec_sra(v1, vlog2_denom);
693 vblock = vec_packsu(v0, v1);
694 vec_st(vblock, 0, block);
700 static av_always_inline
701 void biweight_h264_W_altivec(uint8_t *dst, uint8_t *src, int stride, int height,
702 int log2_denom, int weightd, int weights, int offset, int w)
704 int y, dst_aligned, src_aligned;
706 vec_s16 vtemp, vweights, vweightd, voffset, v0, v1, v2, v3;
708 DECLARE_ALIGNED(16, int32_t, temp)[4];
711 offset = ((offset + 1) | 1) << log2_denom;
712 temp[0] = log2_denom+1;
717 vtemp = (vec_s16)vec_ld(0, temp);
719 vtemp =(vec_s16)vec_perm(vtemp, vtemp, vcswapi2s(0,1,2,3));
721 vlog2_denom = (vec_u16)vec_splat(vtemp, 1);
722 vweights = vec_splat(vtemp, 3);
723 vweightd = vec_splat(vtemp, 5);
724 voffset = vec_splat(vtemp, 7);
725 dst_aligned = !((unsigned long)dst & 0xf);
726 src_aligned = !((unsigned long)src & 0xf);
728 for (y = 0; y < height; y++) {
729 vdst = vec_ld(0, dst);
730 vsrc = vec_ld(0, src);
732 v0 = (vec_s16)VEC_MERGEH(zero_u8v, vdst);
733 v1 = (vec_s16)VEC_MERGEL(zero_u8v, vdst);
734 v2 = (vec_s16)VEC_MERGEH(zero_u8v, vsrc);
735 v3 = (vec_s16)VEC_MERGEL(zero_u8v, vsrc);
744 if (w == 16 || dst_aligned) {
745 v0 = vec_mladd(v0, vweightd, zero_s16v);
746 v2 = vec_mladd(v2, vweights, zero_s16v);
748 v0 = vec_adds(v0, voffset);
749 v0 = vec_adds(v0, v2);
750 v0 = vec_sra(v0, vlog2_denom);
752 if (w == 16 || !dst_aligned) {
753 v1 = vec_mladd(v1, vweightd, zero_s16v);
754 v3 = vec_mladd(v3, vweights, zero_s16v);
756 v1 = vec_adds(v1, voffset);
757 v1 = vec_adds(v1, v3);
758 v1 = vec_sra(v1, vlog2_denom);
760 vdst = vec_packsu(v0, v1);
761 vec_st(vdst, 0, dst);
768 #define H264_WEIGHT(W) \
769 static void weight_h264_pixels ## W ## _altivec(uint8_t *block, int stride, int height, \
770 int log2_denom, int weight, int offset) \
772 weight_h264_W_altivec(block, stride, height, log2_denom, weight, offset, W); \
774 static void biweight_h264_pixels ## W ## _altivec(uint8_t *dst, uint8_t *src, int stride, int height, \
775 int log2_denom, int weightd, int weights, int offset) \
777 biweight_h264_W_altivec(dst, src, stride, height, log2_denom, weightd, weights, offset, W); \
782 #endif /* HAVE_ALTIVEC */
784 av_cold void ff_h264dsp_init_ppc(H264DSPContext *c, const int bit_depth,
785 const int chroma_format_idc)
788 if (!PPC_ALTIVEC(av_get_cpu_flags()))
791 if (bit_depth == 8) {
792 c->h264_idct_add = h264_idct_add_altivec;
793 if (chroma_format_idc <= 1)
794 c->h264_idct_add8 = h264_idct_add8_altivec;
795 c->h264_idct_add16 = h264_idct_add16_altivec;
796 c->h264_idct_add16intra = h264_idct_add16intra_altivec;
797 c->h264_idct_dc_add= h264_idct_dc_add_altivec;
798 c->h264_idct8_dc_add = h264_idct8_dc_add_altivec;
799 c->h264_idct8_add = h264_idct8_add_altivec;
800 c->h264_idct8_add4 = h264_idct8_add4_altivec;
801 c->h264_v_loop_filter_luma= h264_v_loop_filter_luma_altivec;
802 c->h264_h_loop_filter_luma= h264_h_loop_filter_luma_altivec;
804 c->weight_h264_pixels_tab[0] = weight_h264_pixels16_altivec;
805 c->weight_h264_pixels_tab[1] = weight_h264_pixels8_altivec;
806 c->biweight_h264_pixels_tab[0] = biweight_h264_pixels16_altivec;
807 c->biweight_h264_pixels_tab[1] = biweight_h264_pixels8_altivec;
809 #endif /* HAVE_ALTIVEC */