Make strict altivec parsers happy (gcc-4.3 and others)
[libav.git] / libavcodec / ppc / vc1dsp_altivec.c
CommitLineData
481fb636
KS
1/*
2 * VC-1 and WMV3 decoder - DSP functions AltiVec-optimized
3 * Copyright (c) 2006 Konstantin Shishkov
4 *
b78e7197
DB
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
481fb636
KS
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
b78e7197 10 * version 2.1 of the License, or (at your option) any later version.
481fb636 11 *
b78e7197 12 * FFmpeg is distributed in the hope that it will be useful,
481fb636
KS
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
b78e7197 18 * License along with FFmpeg; if not, write to the Free Software
481fb636 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
481fb636
KS
20 */
21
b550bfaa 22#include "dsputil.h"
481fb636
KS
23
24#include "gcc_fixes.h"
25
89523bee 26#include "util_altivec.h"
481fb636 27
481fb636
KS
28// main steps of 8x8 transform
29#define STEP8(s0, s1, s2, s3, s4, s5, s6, s7, vec_rnd) \
30do { \
31 t0 = vec_sl(vec_add(s0, s4), vec_2); \
32 t0 = vec_add(vec_sl(t0, vec_1), t0); \
33 t0 = vec_add(t0, vec_rnd); \
34 t1 = vec_sl(vec_sub(s0, s4), vec_2); \
35 t1 = vec_add(vec_sl(t1, vec_1), t1); \
36 t1 = vec_add(t1, vec_rnd); \
37 t2 = vec_add(vec_sl(s6, vec_2), vec_sl(s6, vec_1)); \
38 t2 = vec_add(t2, vec_sl(s2, vec_4)); \
39 t3 = vec_add(vec_sl(s2, vec_2), vec_sl(s2, vec_1)); \
40 t3 = vec_sub(t3, vec_sl(s6, vec_4)); \
41 t4 = vec_add(t0, t2); \
42 t5 = vec_add(t1, t3); \
43 t6 = vec_sub(t1, t3); \
44 t7 = vec_sub(t0, t2); \
45\
46 t0 = vec_sl(vec_add(s1, s3), vec_4); \
47 t0 = vec_add(t0, vec_sl(s5, vec_3)); \
48 t0 = vec_add(t0, vec_sl(s7, vec_2)); \
49 t0 = vec_add(t0, vec_sub(s5, s3)); \
50\
51 t1 = vec_sl(vec_sub(s1, s5), vec_4); \
52 t1 = vec_sub(t1, vec_sl(s7, vec_3)); \
53 t1 = vec_sub(t1, vec_sl(s3, vec_2)); \
54 t1 = vec_sub(t1, vec_add(s1, s7)); \
55\
56 t2 = vec_sl(vec_sub(s7, s3), vec_4); \
57 t2 = vec_add(t2, vec_sl(s1, vec_3)); \
58 t2 = vec_add(t2, vec_sl(s5, vec_2)); \
59 t2 = vec_add(t2, vec_sub(s1, s7)); \
60\
61 t3 = vec_sl(vec_sub(s5, s7), vec_4); \
62 t3 = vec_sub(t3, vec_sl(s3, vec_3)); \
63 t3 = vec_add(t3, vec_sl(s1, vec_2)); \
64 t3 = vec_sub(t3, vec_add(s3, s5)); \
65\
66 s0 = vec_add(t4, t0); \
67 s1 = vec_add(t5, t1); \
68 s2 = vec_add(t6, t2); \
69 s3 = vec_add(t7, t3); \
70 s4 = vec_sub(t7, t3); \
71 s5 = vec_sub(t6, t2); \
72 s6 = vec_sub(t5, t1); \
73 s7 = vec_sub(t4, t0); \
74}while(0)
75
76#define SHIFT_HOR8(s0, s1, s2, s3, s4, s5, s6, s7) \
77do { \
78 s0 = vec_sra(s0, vec_3); \
79 s1 = vec_sra(s1, vec_3); \
80 s2 = vec_sra(s2, vec_3); \
81 s3 = vec_sra(s3, vec_3); \
82 s4 = vec_sra(s4, vec_3); \
83 s5 = vec_sra(s5, vec_3); \
84 s6 = vec_sra(s6, vec_3); \
85 s7 = vec_sra(s7, vec_3); \
86}while(0)
87
88#define SHIFT_VERT8(s0, s1, s2, s3, s4, s5, s6, s7) \
89do { \
90 s0 = vec_sra(s0, vec_7); \
91 s1 = vec_sra(s1, vec_7); \
92 s2 = vec_sra(s2, vec_7); \
93 s3 = vec_sra(s3, vec_7); \
94 s4 = vec_sra(vec_add(s4, vec_1s), vec_7); \
95 s5 = vec_sra(vec_add(s5, vec_1s), vec_7); \
96 s6 = vec_sra(vec_add(s6, vec_1s), vec_7); \
97 s7 = vec_sra(vec_add(s7, vec_1s), vec_7); \
98}while(0)
99
100/* main steps of 4x4 transform */
101#define STEP4(s0, s1, s2, s3, vec_rnd) \
102do { \
103 t1 = vec_add(vec_sl(s0, vec_4), s0); \
104 t1 = vec_add(t1, vec_rnd); \
105 t2 = vec_add(vec_sl(s2, vec_4), s2); \
106 t0 = vec_add(t1, t2); \
107 t1 = vec_sub(t1, t2); \
108 t3 = vec_sl(vec_sub(s3, s1), vec_1); \
109 t3 = vec_add(t3, vec_sl(t3, vec_2)); \
110 t2 = vec_add(t3, vec_sl(s1, vec_5)); \
111 t3 = vec_add(t3, vec_sl(s3, vec_3)); \
112 t3 = vec_add(t3, vec_sl(s3, vec_2)); \
113 s0 = vec_add(t0, t2); \
114 s1 = vec_sub(t1, t3); \
115 s2 = vec_add(t1, t3); \
116 s3 = vec_sub(t0, t2); \
117}while (0)
118
119#define SHIFT_HOR4(s0, s1, s2, s3) \
120 s0 = vec_sra(s0, vec_3); \
121 s1 = vec_sra(s1, vec_3); \
122 s2 = vec_sra(s2, vec_3); \
123 s3 = vec_sra(s3, vec_3);
124
125#define SHIFT_VERT4(s0, s1, s2, s3) \
126 s0 = vec_sra(s0, vec_7); \
127 s1 = vec_sra(s1, vec_7); \
128 s2 = vec_sra(s2, vec_7); \
129 s3 = vec_sra(s3, vec_7);
130
131/** Do inverse transform on 8x8 block
132*/
133static void vc1_inv_trans_8x8_altivec(DCTELEM block[64])
134{
135 vector signed short src0, src1, src2, src3, src4, src5, src6, src7;
136 vector signed int s0, s1, s2, s3, s4, s5, s6, s7;
137 vector signed int s8, s9, sA, sB, sC, sD, sE, sF;
138 vector signed int t0, t1, t2, t3, t4, t5, t6, t7;
139 const vector signed int vec_64 = vec_sl(vec_splat_s32(4), vec_splat_u32(4));
140 const vector unsigned int vec_7 = vec_splat_u32(7);
481fb636
KS
141 const vector unsigned int vec_4 = vec_splat_u32(4);
142 const vector signed int vec_4s = vec_splat_s32(4);
143 const vector unsigned int vec_3 = vec_splat_u32(3);
144 const vector unsigned int vec_2 = vec_splat_u32(2);
145 const vector signed int vec_1s = vec_splat_s32(1);
146 const vector unsigned int vec_1 = vec_splat_u32(1);
147
148
149 src0 = vec_ld( 0, block);
150 src1 = vec_ld( 16, block);
151 src2 = vec_ld( 32, block);
152 src3 = vec_ld( 48, block);
153 src4 = vec_ld( 64, block);
154 src5 = vec_ld( 80, block);
155 src6 = vec_ld( 96, block);
156 src7 = vec_ld(112, block);
157
158 TRANSPOSE8(src0, src1, src2, src3, src4, src5, src6, src7);
159 s0 = vec_unpackl(src0);
160 s1 = vec_unpackl(src1);
161 s2 = vec_unpackl(src2);
162 s3 = vec_unpackl(src3);
163 s4 = vec_unpackl(src4);
164 s5 = vec_unpackl(src5);
165 s6 = vec_unpackl(src6);
166 s7 = vec_unpackl(src7);
167 s8 = vec_unpackh(src0);
168 s9 = vec_unpackh(src1);
169 sA = vec_unpackh(src2);
170 sB = vec_unpackh(src3);
171 sC = vec_unpackh(src4);
172 sD = vec_unpackh(src5);
173 sE = vec_unpackh(src6);
174 sF = vec_unpackh(src7);
175 STEP8(s0, s1, s2, s3, s4, s5, s6, s7, vec_4s);
176 SHIFT_HOR8(s0, s1, s2, s3, s4, s5, s6, s7);
177 STEP8(s8, s9, sA, sB, sC, sD, sE, sF, vec_4s);
178 SHIFT_HOR8(s8, s9, sA, sB, sC, sD, sE, sF);
179 src0 = vec_pack(s8, s0);
180 src1 = vec_pack(s9, s1);
181 src2 = vec_pack(sA, s2);
182 src3 = vec_pack(sB, s3);
183 src4 = vec_pack(sC, s4);
184 src5 = vec_pack(sD, s5);
185 src6 = vec_pack(sE, s6);
186 src7 = vec_pack(sF, s7);
187 TRANSPOSE8(src0, src1, src2, src3, src4, src5, src6, src7);
188
189 s0 = vec_unpackl(src0);
190 s1 = vec_unpackl(src1);
191 s2 = vec_unpackl(src2);
192 s3 = vec_unpackl(src3);
193 s4 = vec_unpackl(src4);
194 s5 = vec_unpackl(src5);
195 s6 = vec_unpackl(src6);
196 s7 = vec_unpackl(src7);
197 s8 = vec_unpackh(src0);
198 s9 = vec_unpackh(src1);
199 sA = vec_unpackh(src2);
200 sB = vec_unpackh(src3);
201 sC = vec_unpackh(src4);
202 sD = vec_unpackh(src5);
203 sE = vec_unpackh(src6);
204 sF = vec_unpackh(src7);
205 STEP8(s0, s1, s2, s3, s4, s5, s6, s7, vec_64);
206 SHIFT_VERT8(s0, s1, s2, s3, s4, s5, s6, s7);
207 STEP8(s8, s9, sA, sB, sC, sD, sE, sF, vec_64);
208 SHIFT_VERT8(s8, s9, sA, sB, sC, sD, sE, sF);
209 src0 = vec_pack(s8, s0);
210 src1 = vec_pack(s9, s1);
211 src2 = vec_pack(sA, s2);
212 src3 = vec_pack(sB, s3);
213 src4 = vec_pack(sC, s4);
214 src5 = vec_pack(sD, s5);
215 src6 = vec_pack(sE, s6);
216 src7 = vec_pack(sF, s7);
217
218 vec_st(src0, 0, block);
219 vec_st(src1, 16, block);
220 vec_st(src2, 32, block);
221 vec_st(src3, 48, block);
222 vec_st(src4, 64, block);
223 vec_st(src5, 80, block);
224 vec_st(src6, 96, block);
225 vec_st(src7,112, block);
226}
227
228/** Do inverse transform on 8x4 part of block
229*/
51ece684 230static void vc1_inv_trans_8x4_altivec(uint8_t *dest, int stride, DCTELEM *block)
481fb636
KS
231{
232 vector signed short src0, src1, src2, src3, src4, src5, src6, src7;
233 vector signed int s0, s1, s2, s3, s4, s5, s6, s7;
234 vector signed int s8, s9, sA, sB, sC, sD, sE, sF;
235 vector signed int t0, t1, t2, t3, t4, t5, t6, t7;
236 const vector signed int vec_64 = vec_sl(vec_splat_s32(4), vec_splat_u32(4));
237 const vector unsigned int vec_7 = vec_splat_u32(7);
238 const vector unsigned int vec_5 = vec_splat_u32(5);
239 const vector unsigned int vec_4 = vec_splat_u32(4);
240 const vector signed int vec_4s = vec_splat_s32(4);
241 const vector unsigned int vec_3 = vec_splat_u32(3);
242 const vector unsigned int vec_2 = vec_splat_u32(2);
243 const vector unsigned int vec_1 = vec_splat_u32(1);
51ece684
KS
244 vector unsigned char tmp;
245 vector signed short tmp2, tmp3;
246 vector unsigned char perm0, perm1, p0, p1, p;
481fb636
KS
247
248 src0 = vec_ld( 0, block);
249 src1 = vec_ld( 16, block);
250 src2 = vec_ld( 32, block);
251 src3 = vec_ld( 48, block);
252 src4 = vec_ld( 64, block);
253 src5 = vec_ld( 80, block);
254 src6 = vec_ld( 96, block);
255 src7 = vec_ld(112, block);
256
257 TRANSPOSE8(src0, src1, src2, src3, src4, src5, src6, src7);
258 s0 = vec_unpackl(src0);
259 s1 = vec_unpackl(src1);
260 s2 = vec_unpackl(src2);
261 s3 = vec_unpackl(src3);
262 s4 = vec_unpackl(src4);
263 s5 = vec_unpackl(src5);
264 s6 = vec_unpackl(src6);
265 s7 = vec_unpackl(src7);
266 s8 = vec_unpackh(src0);
267 s9 = vec_unpackh(src1);
268 sA = vec_unpackh(src2);
269 sB = vec_unpackh(src3);
270 sC = vec_unpackh(src4);
271 sD = vec_unpackh(src5);
272 sE = vec_unpackh(src6);
273 sF = vec_unpackh(src7);
274 STEP8(s0, s1, s2, s3, s4, s5, s6, s7, vec_4s);
275 SHIFT_HOR8(s0, s1, s2, s3, s4, s5, s6, s7);
276 STEP8(s8, s9, sA, sB, sC, sD, sE, sF, vec_4s);
277 SHIFT_HOR8(s8, s9, sA, sB, sC, sD, sE, sF);
278 src0 = vec_pack(s8, s0);
279 src1 = vec_pack(s9, s1);
280 src2 = vec_pack(sA, s2);
281 src3 = vec_pack(sB, s3);
282 src4 = vec_pack(sC, s4);
283 src5 = vec_pack(sD, s5);
284 src6 = vec_pack(sE, s6);
285 src7 = vec_pack(sF, s7);
286 TRANSPOSE8(src0, src1, src2, src3, src4, src5, src6, src7);
287
98f48ce1
KS
288 s0 = vec_unpackh(src0);
289 s1 = vec_unpackh(src1);
290 s2 = vec_unpackh(src2);
291 s3 = vec_unpackh(src3);
292 s8 = vec_unpackl(src0);
293 s9 = vec_unpackl(src1);
294 sA = vec_unpackl(src2);
295 sB = vec_unpackl(src3);
296 STEP4(s0, s1, s2, s3, vec_64);
297 SHIFT_VERT4(s0, s1, s2, s3);
298 STEP4(s8, s9, sA, sB, vec_64);
299 SHIFT_VERT4(s8, s9, sA, sB);
300 src0 = vec_pack(s0, s8);
301 src1 = vec_pack(s1, s9);
302 src2 = vec_pack(s2, sA);
303 src3 = vec_pack(s3, sB);
481fb636 304
51ece684
KS
305 p0 = vec_lvsl (0, dest);
306 p1 = vec_lvsl (stride, dest);
307 p = vec_splat_u8 (-1);
308 perm0 = vec_mergeh (p, p0);
309 perm1 = vec_mergeh (p, p1);
310
311#define ADD(dest,src,perm) \
312 /* *(uint64_t *)&tmp = *(uint64_t *)dest; */ \
313 tmp = vec_ld (0, dest); \
c49e23e2 314 tmp2 = (vector signed short)vec_perm (tmp, vec_splat_u8(0), perm); \
51ece684
KS
315 tmp3 = vec_adds (tmp2, src); \
316 tmp = vec_packsu (tmp3, tmp3); \
317 vec_ste ((vector unsigned int)tmp, 0, (unsigned int *)dest); \
318 vec_ste ((vector unsigned int)tmp, 4, (unsigned int *)dest);
481fb636 319
51ece684
KS
320 ADD (dest, src0, perm0) dest += stride;
321 ADD (dest, src1, perm1) dest += stride;
322 ADD (dest, src2, perm0) dest += stride;
323 ADD (dest, src3, perm1)
481fb636
KS
324}
325
326
327void vc1dsp_init_altivec(DSPContext* dsp, AVCodecContext *avctx) {
328 dsp->vc1_inv_trans_8x8 = vc1_inv_trans_8x8_altivec;
51ece684 329 dsp->vc1_inv_trans_8x4 = vc1_inv_trans_8x4_altivec;
481fb636 330}