Add libavcodec to compiler include flags in order to simplify header
[libav.git] / libavcodec / ppc / vc1dsp_altivec.c
1 /*
2 * VC-1 and WMV3 decoder - DSP functions AltiVec-optimized
3 * Copyright (c) 2006 Konstantin Shishkov
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
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
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 *
21 */
22
23 #include "dsputil.h"
24
25 #include "gcc_fixes.h"
26
27 #include "dsputil_altivec.h"
28
29 // main steps of 8x8 transform
30 #define STEP8(s0, s1, s2, s3, s4, s5, s6, s7, vec_rnd) \
31 do { \
32 t0 = vec_sl(vec_add(s0, s4), vec_2); \
33 t0 = vec_add(vec_sl(t0, vec_1), t0); \
34 t0 = vec_add(t0, vec_rnd); \
35 t1 = vec_sl(vec_sub(s0, s4), vec_2); \
36 t1 = vec_add(vec_sl(t1, vec_1), t1); \
37 t1 = vec_add(t1, vec_rnd); \
38 t2 = vec_add(vec_sl(s6, vec_2), vec_sl(s6, vec_1)); \
39 t2 = vec_add(t2, vec_sl(s2, vec_4)); \
40 t3 = vec_add(vec_sl(s2, vec_2), vec_sl(s2, vec_1)); \
41 t3 = vec_sub(t3, vec_sl(s6, vec_4)); \
42 t4 = vec_add(t0, t2); \
43 t5 = vec_add(t1, t3); \
44 t6 = vec_sub(t1, t3); \
45 t7 = vec_sub(t0, t2); \
46 \
47 t0 = vec_sl(vec_add(s1, s3), vec_4); \
48 t0 = vec_add(t0, vec_sl(s5, vec_3)); \
49 t0 = vec_add(t0, vec_sl(s7, vec_2)); \
50 t0 = vec_add(t0, vec_sub(s5, s3)); \
51 \
52 t1 = vec_sl(vec_sub(s1, s5), vec_4); \
53 t1 = vec_sub(t1, vec_sl(s7, vec_3)); \
54 t1 = vec_sub(t1, vec_sl(s3, vec_2)); \
55 t1 = vec_sub(t1, vec_add(s1, s7)); \
56 \
57 t2 = vec_sl(vec_sub(s7, s3), vec_4); \
58 t2 = vec_add(t2, vec_sl(s1, vec_3)); \
59 t2 = vec_add(t2, vec_sl(s5, vec_2)); \
60 t2 = vec_add(t2, vec_sub(s1, s7)); \
61 \
62 t3 = vec_sl(vec_sub(s5, s7), vec_4); \
63 t3 = vec_sub(t3, vec_sl(s3, vec_3)); \
64 t3 = vec_add(t3, vec_sl(s1, vec_2)); \
65 t3 = vec_sub(t3, vec_add(s3, s5)); \
66 \
67 s0 = vec_add(t4, t0); \
68 s1 = vec_add(t5, t1); \
69 s2 = vec_add(t6, t2); \
70 s3 = vec_add(t7, t3); \
71 s4 = vec_sub(t7, t3); \
72 s5 = vec_sub(t6, t2); \
73 s6 = vec_sub(t5, t1); \
74 s7 = vec_sub(t4, t0); \
75 }while(0)
76
77 #define SHIFT_HOR8(s0, s1, s2, s3, s4, s5, s6, s7) \
78 do { \
79 s0 = vec_sra(s0, vec_3); \
80 s1 = vec_sra(s1, vec_3); \
81 s2 = vec_sra(s2, vec_3); \
82 s3 = vec_sra(s3, vec_3); \
83 s4 = vec_sra(s4, vec_3); \
84 s5 = vec_sra(s5, vec_3); \
85 s6 = vec_sra(s6, vec_3); \
86 s7 = vec_sra(s7, vec_3); \
87 }while(0)
88
89 #define SHIFT_VERT8(s0, s1, s2, s3, s4, s5, s6, s7) \
90 do { \
91 s0 = vec_sra(s0, vec_7); \
92 s1 = vec_sra(s1, vec_7); \
93 s2 = vec_sra(s2, vec_7); \
94 s3 = vec_sra(s3, vec_7); \
95 s4 = vec_sra(vec_add(s4, vec_1s), vec_7); \
96 s5 = vec_sra(vec_add(s5, vec_1s), vec_7); \
97 s6 = vec_sra(vec_add(s6, vec_1s), vec_7); \
98 s7 = vec_sra(vec_add(s7, vec_1s), vec_7); \
99 }while(0)
100
101 /* main steps of 4x4 transform */
102 #define STEP4(s0, s1, s2, s3, vec_rnd) \
103 do { \
104 t1 = vec_add(vec_sl(s0, vec_4), s0); \
105 t1 = vec_add(t1, vec_rnd); \
106 t2 = vec_add(vec_sl(s2, vec_4), s2); \
107 t0 = vec_add(t1, t2); \
108 t1 = vec_sub(t1, t2); \
109 t3 = vec_sl(vec_sub(s3, s1), vec_1); \
110 t3 = vec_add(t3, vec_sl(t3, vec_2)); \
111 t2 = vec_add(t3, vec_sl(s1, vec_5)); \
112 t3 = vec_add(t3, vec_sl(s3, vec_3)); \
113 t3 = vec_add(t3, vec_sl(s3, vec_2)); \
114 s0 = vec_add(t0, t2); \
115 s1 = vec_sub(t1, t3); \
116 s2 = vec_add(t1, t3); \
117 s3 = vec_sub(t0, t2); \
118 }while (0)
119
120 #define SHIFT_HOR4(s0, s1, s2, s3) \
121 s0 = vec_sra(s0, vec_3); \
122 s1 = vec_sra(s1, vec_3); \
123 s2 = vec_sra(s2, vec_3); \
124 s3 = vec_sra(s3, vec_3);
125
126 #define SHIFT_VERT4(s0, s1, s2, s3) \
127 s0 = vec_sra(s0, vec_7); \
128 s1 = vec_sra(s1, vec_7); \
129 s2 = vec_sra(s2, vec_7); \
130 s3 = vec_sra(s3, vec_7);
131
132 /** Do inverse transform on 8x8 block
133 */
134 static void vc1_inv_trans_8x8_altivec(DCTELEM block[64])
135 {
136 vector signed short src0, src1, src2, src3, src4, src5, src6, src7;
137 vector signed int s0, s1, s2, s3, s4, s5, s6, s7;
138 vector signed int s8, s9, sA, sB, sC, sD, sE, sF;
139 vector signed int t0, t1, t2, t3, t4, t5, t6, t7;
140 const vector signed int vec_64 = vec_sl(vec_splat_s32(4), vec_splat_u32(4));
141 const vector unsigned int vec_7 = vec_splat_u32(7);
142 const vector unsigned int vec_5 = vec_splat_u32(5);
143 const vector unsigned int vec_4 = vec_splat_u32(4);
144 const vector signed int vec_4s = vec_splat_s32(4);
145 const vector unsigned int vec_3 = vec_splat_u32(3);
146 const vector unsigned int vec_2 = vec_splat_u32(2);
147 const vector signed int vec_1s = vec_splat_s32(1);
148 const vector unsigned int vec_1 = vec_splat_u32(1);
149
150
151 src0 = vec_ld( 0, block);
152 src1 = vec_ld( 16, block);
153 src2 = vec_ld( 32, block);
154 src3 = vec_ld( 48, block);
155 src4 = vec_ld( 64, block);
156 src5 = vec_ld( 80, block);
157 src6 = vec_ld( 96, block);
158 src7 = vec_ld(112, block);
159
160 TRANSPOSE8(src0, src1, src2, src3, src4, src5, src6, src7);
161 s0 = vec_unpackl(src0);
162 s1 = vec_unpackl(src1);
163 s2 = vec_unpackl(src2);
164 s3 = vec_unpackl(src3);
165 s4 = vec_unpackl(src4);
166 s5 = vec_unpackl(src5);
167 s6 = vec_unpackl(src6);
168 s7 = vec_unpackl(src7);
169 s8 = vec_unpackh(src0);
170 s9 = vec_unpackh(src1);
171 sA = vec_unpackh(src2);
172 sB = vec_unpackh(src3);
173 sC = vec_unpackh(src4);
174 sD = vec_unpackh(src5);
175 sE = vec_unpackh(src6);
176 sF = vec_unpackh(src7);
177 STEP8(s0, s1, s2, s3, s4, s5, s6, s7, vec_4s);
178 SHIFT_HOR8(s0, s1, s2, s3, s4, s5, s6, s7);
179 STEP8(s8, s9, sA, sB, sC, sD, sE, sF, vec_4s);
180 SHIFT_HOR8(s8, s9, sA, sB, sC, sD, sE, sF);
181 src0 = vec_pack(s8, s0);
182 src1 = vec_pack(s9, s1);
183 src2 = vec_pack(sA, s2);
184 src3 = vec_pack(sB, s3);
185 src4 = vec_pack(sC, s4);
186 src5 = vec_pack(sD, s5);
187 src6 = vec_pack(sE, s6);
188 src7 = vec_pack(sF, s7);
189 TRANSPOSE8(src0, src1, src2, src3, src4, src5, src6, src7);
190
191 s0 = vec_unpackl(src0);
192 s1 = vec_unpackl(src1);
193 s2 = vec_unpackl(src2);
194 s3 = vec_unpackl(src3);
195 s4 = vec_unpackl(src4);
196 s5 = vec_unpackl(src5);
197 s6 = vec_unpackl(src6);
198 s7 = vec_unpackl(src7);
199 s8 = vec_unpackh(src0);
200 s9 = vec_unpackh(src1);
201 sA = vec_unpackh(src2);
202 sB = vec_unpackh(src3);
203 sC = vec_unpackh(src4);
204 sD = vec_unpackh(src5);
205 sE = vec_unpackh(src6);
206 sF = vec_unpackh(src7);
207 STEP8(s0, s1, s2, s3, s4, s5, s6, s7, vec_64);
208 SHIFT_VERT8(s0, s1, s2, s3, s4, s5, s6, s7);
209 STEP8(s8, s9, sA, sB, sC, sD, sE, sF, vec_64);
210 SHIFT_VERT8(s8, s9, sA, sB, sC, sD, sE, sF);
211 src0 = vec_pack(s8, s0);
212 src1 = vec_pack(s9, s1);
213 src2 = vec_pack(sA, s2);
214 src3 = vec_pack(sB, s3);
215 src4 = vec_pack(sC, s4);
216 src5 = vec_pack(sD, s5);
217 src6 = vec_pack(sE, s6);
218 src7 = vec_pack(sF, s7);
219
220 vec_st(src0, 0, block);
221 vec_st(src1, 16, block);
222 vec_st(src2, 32, block);
223 vec_st(src3, 48, block);
224 vec_st(src4, 64, block);
225 vec_st(src5, 80, block);
226 vec_st(src6, 96, block);
227 vec_st(src7,112, block);
228 }
229
230 /** Do inverse transform on 8x4 part of block
231 */
232 static void vc1_inv_trans_8x4_altivec(DCTELEM block[64], int n)
233 {
234 vector signed short src0, src1, src2, src3, src4, src5, src6, src7;
235 vector signed int s0, s1, s2, s3, s4, s5, s6, s7;
236 vector signed int s8, s9, sA, sB, sC, sD, sE, sF;
237 vector signed int t0, t1, t2, t3, t4, t5, t6, t7;
238 const vector signed int vec_64 = vec_sl(vec_splat_s32(4), vec_splat_u32(4));
239 const vector unsigned int vec_7 = vec_splat_u32(7);
240 const vector unsigned int vec_5 = vec_splat_u32(5);
241 const vector unsigned int vec_4 = vec_splat_u32(4);
242 const vector signed int vec_4s = vec_splat_s32(4);
243 const vector unsigned int vec_3 = vec_splat_u32(3);
244 const vector unsigned int vec_2 = vec_splat_u32(2);
245 const vector unsigned int vec_1 = vec_splat_u32(1);
246
247 src0 = vec_ld( 0, block);
248 src1 = vec_ld( 16, block);
249 src2 = vec_ld( 32, block);
250 src3 = vec_ld( 48, block);
251 src4 = vec_ld( 64, block);
252 src5 = vec_ld( 80, block);
253 src6 = vec_ld( 96, block);
254 src7 = vec_ld(112, block);
255
256 TRANSPOSE8(src0, src1, src2, src3, src4, src5, src6, src7);
257 s0 = vec_unpackl(src0);
258 s1 = vec_unpackl(src1);
259 s2 = vec_unpackl(src2);
260 s3 = vec_unpackl(src3);
261 s4 = vec_unpackl(src4);
262 s5 = vec_unpackl(src5);
263 s6 = vec_unpackl(src6);
264 s7 = vec_unpackl(src7);
265 s8 = vec_unpackh(src0);
266 s9 = vec_unpackh(src1);
267 sA = vec_unpackh(src2);
268 sB = vec_unpackh(src3);
269 sC = vec_unpackh(src4);
270 sD = vec_unpackh(src5);
271 sE = vec_unpackh(src6);
272 sF = vec_unpackh(src7);
273 STEP8(s0, s1, s2, s3, s4, s5, s6, s7, vec_4s);
274 SHIFT_HOR8(s0, s1, s2, s3, s4, s5, s6, s7);
275 STEP8(s8, s9, sA, sB, sC, sD, sE, sF, vec_4s);
276 SHIFT_HOR8(s8, s9, sA, sB, sC, sD, sE, sF);
277 src0 = vec_pack(s8, s0);
278 src1 = vec_pack(s9, s1);
279 src2 = vec_pack(sA, s2);
280 src3 = vec_pack(sB, s3);
281 src4 = vec_pack(sC, s4);
282 src5 = vec_pack(sD, s5);
283 src6 = vec_pack(sE, s6);
284 src7 = vec_pack(sF, s7);
285 TRANSPOSE8(src0, src1, src2, src3, src4, src5, src6, src7);
286
287 if(!n){ // upper half of block
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);
304
305 vec_st(src0, 0, block);
306 vec_st(src1, 16, block);
307 vec_st(src2, 32, block);
308 vec_st(src3, 48, block);
309 } else { //lower half of block
310 s0 = vec_unpackh(src4);
311 s1 = vec_unpackh(src5);
312 s2 = vec_unpackh(src6);
313 s3 = vec_unpackh(src7);
314 s8 = vec_unpackl(src4);
315 s9 = vec_unpackl(src5);
316 sA = vec_unpackl(src6);
317 sB = vec_unpackl(src7);
318 STEP4(s0, s1, s2, s3, vec_64);
319 SHIFT_VERT4(s0, s1, s2, s3);
320 STEP4(s8, s9, sA, sB, vec_64);
321 SHIFT_VERT4(s8, s9, sA, sB);
322 src4 = vec_pack(s0, s8);
323 src5 = vec_pack(s1, s9);
324 src6 = vec_pack(s2, sA);
325 src7 = vec_pack(s3, sB);
326
327 vec_st(src4, 64, block);
328 vec_st(src5, 80, block);
329 vec_st(src6, 96, block);
330 vec_st(src7,112, block);
331 }
332 }
333
334
335 void vc1dsp_init_altivec(DSPContext* dsp, AVCodecContext *avctx) {
336 dsp->vc1_inv_trans_8x8 = vc1_inv_trans_8x8_altivec;
337 dsp->vc1_inv_trans_8x4 = vc1_inv_trans_8x4_altivec;
338 }