Replace ASMALIGN() with .p2align
[ffmpeg.git] / libavcodec / x86 / mpegvideo_mmx_template.c
1 /*
2  * MPEG video MMX templates
3  *
4  * Copyright (c) 2002 Michael Niedermayer <michaelni@gmx.at>
5  *
6  * This file is part of FFmpeg.
7  *
8  * FFmpeg is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public
10  * License as published by the Free Software Foundation; either
11  * version 2.1 of the License, or (at your option) any later version.
12  *
13  * FFmpeg is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
16  * Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public
19  * License along with FFmpeg; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  */
22
23 #undef MMREG_WIDTH
24 #undef MM
25 #undef MOVQ
26 #undef SPREADW
27 #undef PMAXW
28 #undef PMAX
29 #undef SAVE_SIGN
30 #undef RESTORE_SIGN
31
32 #if HAVE_SSE2
33 #define MMREG_WIDTH "16"
34 #define MM "%%xmm"
35 #define MOVQ "movdqa"
36 #define SPREADW(a) \
37             "pshuflw $0, "a", "a"       \n\t"\
38             "punpcklwd "a", "a"         \n\t"
39 #define PMAXW(a,b) "pmaxsw "a", "b"     \n\t"
40 #define PMAX(a,b) \
41             "movhlps "a", "b"           \n\t"\
42             PMAXW(b, a)\
43             "pshuflw $0x0E, "a", "b"    \n\t"\
44             PMAXW(b, a)\
45             "pshuflw $0x01, "a", "b"    \n\t"\
46             PMAXW(b, a)
47 #else
48 #define MMREG_WIDTH "8"
49 #define MM "%%mm"
50 #define MOVQ "movq"
51 #if HAVE_MMX2
52 #define SPREADW(a) "pshufw $0, "a", "a" \n\t"
53 #define PMAXW(a,b) "pmaxsw "a", "b"     \n\t"
54 #define PMAX(a,b) \
55             "pshufw $0x0E, "a", "b"     \n\t"\
56             PMAXW(b, a)\
57             "pshufw $0x01, "a", "b"     \n\t"\
58             PMAXW(b, a)
59 #else
60 #define SPREADW(a) \
61             "punpcklwd "a", "a"         \n\t"\
62             "punpcklwd "a", "a"         \n\t"
63 #define PMAXW(a,b) \
64             "psubusw "a", "b"           \n\t"\
65             "paddw "a", "b"             \n\t"
66 #define PMAX(a,b)  \
67             "movq "a", "b"              \n\t"\
68             "psrlq $32, "a"             \n\t"\
69             PMAXW(b, a)\
70             "movq "a", "b"              \n\t"\
71             "psrlq $16, "a"             \n\t"\
72             PMAXW(b, a)
73
74 #endif
75 #endif
76
77 #if HAVE_SSSE3
78 #define SAVE_SIGN(a,b) \
79             "movdqa "b", "a"            \n\t"\
80             "pabsw  "b", "b"            \n\t"
81 #define RESTORE_SIGN(a,b) \
82             "psignw "a", "b"            \n\t"
83 #else
84 #define SAVE_SIGN(a,b) \
85             "pxor "a", "a"              \n\t"\
86             "pcmpgtw "b", "a"           \n\t" /* block[i] <= 0 ? 0xFF : 0x00 */\
87             "pxor "a", "b"              \n\t"\
88             "psubw "a", "b"             \n\t" /* ABS(block[i]) */
89 #define RESTORE_SIGN(a,b) \
90             "pxor "a", "b"              \n\t"\
91             "psubw "a", "b"             \n\t" // out=((ABS(block[i])*qmat[0] - bias[0]*qmat[0])>>16)*sign(block[i])
92 #endif
93
94 static int RENAME(dct_quantize)(MpegEncContext *s,
95                             DCTELEM *block, int n,
96                             int qscale, int *overflow)
97 {
98     x86_reg last_non_zero_p1;
99     int level=0, q; //=0 is because gcc says uninitialized ...
100     const uint16_t *qmat, *bias;
101     DECLARE_ALIGNED(16, int16_t, temp_block)[64];
102
103     assert((7&(int)(&temp_block[0])) == 0); //did gcc align it correctly?
104
105     //s->fdct (block);
106     RENAMEl(ff_fdct) (block); //cannot be anything else ...
107
108     if(s->dct_error_sum)
109         s->denoise_dct(s, block);
110
111     if (s->mb_intra) {
112         int dummy;
113         if (n < 4)
114             q = s->y_dc_scale;
115         else
116             q = s->c_dc_scale;
117         /* note: block[0] is assumed to be positive */
118         if (!s->h263_aic) {
119 #if 1
120         __asm__ volatile (
121                 "mul %%ecx                \n\t"
122                 : "=d" (level), "=a"(dummy)
123                 : "a" ((block[0]>>2) + q), "c" (ff_inverse[q<<1])
124         );
125 #else
126         __asm__ volatile (
127                 "xorl %%edx, %%edx        \n\t"
128                 "divw %%cx                \n\t"
129                 "movzwl %%ax, %%eax       \n\t"
130                 : "=a" (level)
131                 : "a" ((block[0]>>2) + q), "c" (q<<1)
132                 : "%edx"
133         );
134 #endif
135         } else
136             /* For AIC we skip quant/dequant of INTRADC */
137             level = (block[0] + 4)>>3;
138
139         block[0]=0; //avoid fake overflow
140 //        temp_block[0] = (block[0] + (q >> 1)) / q;
141         last_non_zero_p1 = 1;
142         bias = s->q_intra_matrix16[qscale][1];
143         qmat = s->q_intra_matrix16[qscale][0];
144     } else {
145         last_non_zero_p1 = 0;
146         bias = s->q_inter_matrix16[qscale][1];
147         qmat = s->q_inter_matrix16[qscale][0];
148     }
149
150     if((s->out_format == FMT_H263 || s->out_format == FMT_H261) && s->mpeg_quant==0){
151
152         __asm__ volatile(
153             "movd %%"REG_a", "MM"3              \n\t" // last_non_zero_p1
154             SPREADW(MM"3")
155             "pxor "MM"7, "MM"7                  \n\t" // 0
156             "pxor "MM"4, "MM"4                  \n\t" // 0
157             MOVQ" (%2), "MM"5                   \n\t" // qmat[0]
158             "pxor "MM"6, "MM"6                  \n\t"
159             "psubw (%3), "MM"6                  \n\t" // -bias[0]
160             "mov $-128, %%"REG_a"               \n\t"
161             ".p2align 4                         \n\t"
162             "1:                                 \n\t"
163             MOVQ" (%1, %%"REG_a"), "MM"0        \n\t" // block[i]
164             SAVE_SIGN(MM"1", MM"0")                   // ABS(block[i])
165             "psubusw "MM"6, "MM"0               \n\t" // ABS(block[i]) + bias[0]
166             "pmulhw "MM"5, "MM"0                \n\t" // (ABS(block[i])*qmat[0] - bias[0]*qmat[0])>>16
167             "por "MM"0, "MM"4                   \n\t"
168             RESTORE_SIGN(MM"1", MM"0")                // out=((ABS(block[i])*qmat[0] - bias[0]*qmat[0])>>16)*sign(block[i])
169             MOVQ" "MM"0, (%5, %%"REG_a")        \n\t"
170             "pcmpeqw "MM"7, "MM"0               \n\t" // out==0 ? 0xFF : 0x00
171             MOVQ" (%4, %%"REG_a"), "MM"1        \n\t"
172             MOVQ" "MM"7, (%1, %%"REG_a")        \n\t" // 0
173             "pandn "MM"1, "MM"0                 \n\t"
174             PMAXW(MM"0", MM"3")
175             "add $"MMREG_WIDTH", %%"REG_a"      \n\t"
176             " js 1b                             \n\t"
177             PMAX(MM"3", MM"0")
178             "movd "MM"3, %%"REG_a"              \n\t"
179             "movzb %%al, %%"REG_a"              \n\t" // last_non_zero_p1
180             : "+a" (last_non_zero_p1)
181             : "r" (block+64), "r" (qmat), "r" (bias),
182               "r" (inv_zigzag_direct16+64), "r" (temp_block+64)
183               XMM_CLOBBERS_ONLY("%xmm0", "%xmm1", "%xmm2", "%xmm3",
184                                 "%xmm4", "%xmm5", "%xmm6", "%xmm7")
185         );
186     }else{ // FMT_H263
187         __asm__ volatile(
188             "movd %%"REG_a", "MM"3              \n\t" // last_non_zero_p1
189             SPREADW(MM"3")
190             "pxor "MM"7, "MM"7                  \n\t" // 0
191             "pxor "MM"4, "MM"4                  \n\t" // 0
192             "mov $-128, %%"REG_a"               \n\t"
193             ".p2align 4                         \n\t"
194             "1:                                 \n\t"
195             MOVQ" (%1, %%"REG_a"), "MM"0        \n\t" // block[i]
196             SAVE_SIGN(MM"1", MM"0")                   // ABS(block[i])
197             MOVQ" (%3, %%"REG_a"), "MM"6        \n\t" // bias[0]
198             "paddusw "MM"6, "MM"0               \n\t" // ABS(block[i]) + bias[0]
199             MOVQ" (%2, %%"REG_a"), "MM"5        \n\t" // qmat[i]
200             "pmulhw "MM"5, "MM"0                \n\t" // (ABS(block[i])*qmat[0] + bias[0]*qmat[0])>>16
201             "por "MM"0, "MM"4                   \n\t"
202             RESTORE_SIGN(MM"1", MM"0")                // out=((ABS(block[i])*qmat[0] - bias[0]*qmat[0])>>16)*sign(block[i])
203             MOVQ" "MM"0, (%5, %%"REG_a")        \n\t"
204             "pcmpeqw "MM"7, "MM"0               \n\t" // out==0 ? 0xFF : 0x00
205             MOVQ" (%4, %%"REG_a"), "MM"1        \n\t"
206             MOVQ" "MM"7, (%1, %%"REG_a")        \n\t" // 0
207             "pandn "MM"1, "MM"0                 \n\t"
208             PMAXW(MM"0", MM"3")
209             "add $"MMREG_WIDTH", %%"REG_a"      \n\t"
210             " js 1b                             \n\t"
211             PMAX(MM"3", MM"0")
212             "movd "MM"3, %%"REG_a"              \n\t"
213             "movzb %%al, %%"REG_a"              \n\t" // last_non_zero_p1
214             : "+a" (last_non_zero_p1)
215             : "r" (block+64), "r" (qmat+64), "r" (bias+64),
216               "r" (inv_zigzag_direct16+64), "r" (temp_block+64)
217               XMM_CLOBBERS_ONLY("%xmm0", "%xmm1", "%xmm2", "%xmm3",
218                                 "%xmm4", "%xmm5", "%xmm6", "%xmm7")
219         );
220     }
221     __asm__ volatile(
222         "movd %1, "MM"1                     \n\t" // max_qcoeff
223         SPREADW(MM"1")
224         "psubusw "MM"1, "MM"4               \n\t"
225         "packuswb "MM"4, "MM"4              \n\t"
226 #if HAVE_SSE2
227         "packuswb "MM"4, "MM"4              \n\t"
228 #endif
229         "movd "MM"4, %0                     \n\t" // *overflow
230         : "=g" (*overflow)
231         : "g" (s->max_qcoeff)
232     );
233
234     if(s->mb_intra) block[0]= level;
235     else            block[0]= temp_block[0];
236
237     if(s->dsp.idct_permutation_type == FF_SIMPLE_IDCT_PERM){
238         if(last_non_zero_p1 <= 1) goto end;
239         block[0x08] = temp_block[0x01]; block[0x10] = temp_block[0x08];
240         block[0x20] = temp_block[0x10];
241         if(last_non_zero_p1 <= 4) goto end;
242         block[0x18] = temp_block[0x09]; block[0x04] = temp_block[0x02];
243         block[0x09] = temp_block[0x03];
244         if(last_non_zero_p1 <= 7) goto end;
245         block[0x14] = temp_block[0x0A]; block[0x28] = temp_block[0x11];
246         block[0x12] = temp_block[0x18]; block[0x02] = temp_block[0x20];
247         if(last_non_zero_p1 <= 11) goto end;
248         block[0x1A] = temp_block[0x19]; block[0x24] = temp_block[0x12];
249         block[0x19] = temp_block[0x0B]; block[0x01] = temp_block[0x04];
250         block[0x0C] = temp_block[0x05];
251         if(last_non_zero_p1 <= 16) goto end;
252         block[0x11] = temp_block[0x0C]; block[0x29] = temp_block[0x13];
253         block[0x16] = temp_block[0x1A]; block[0x0A] = temp_block[0x21];
254         block[0x30] = temp_block[0x28]; block[0x22] = temp_block[0x30];
255         block[0x38] = temp_block[0x29]; block[0x06] = temp_block[0x22];
256         if(last_non_zero_p1 <= 24) goto end;
257         block[0x1B] = temp_block[0x1B]; block[0x21] = temp_block[0x14];
258         block[0x1C] = temp_block[0x0D]; block[0x05] = temp_block[0x06];
259         block[0x0D] = temp_block[0x07]; block[0x15] = temp_block[0x0E];
260         block[0x2C] = temp_block[0x15]; block[0x13] = temp_block[0x1C];
261         if(last_non_zero_p1 <= 32) goto end;
262         block[0x0B] = temp_block[0x23]; block[0x34] = temp_block[0x2A];
263         block[0x2A] = temp_block[0x31]; block[0x32] = temp_block[0x38];
264         block[0x3A] = temp_block[0x39]; block[0x26] = temp_block[0x32];
265         block[0x39] = temp_block[0x2B]; block[0x03] = temp_block[0x24];
266         if(last_non_zero_p1 <= 40) goto end;
267         block[0x1E] = temp_block[0x1D]; block[0x25] = temp_block[0x16];
268         block[0x1D] = temp_block[0x0F]; block[0x2D] = temp_block[0x17];
269         block[0x17] = temp_block[0x1E]; block[0x0E] = temp_block[0x25];
270         block[0x31] = temp_block[0x2C]; block[0x2B] = temp_block[0x33];
271         if(last_non_zero_p1 <= 48) goto end;
272         block[0x36] = temp_block[0x3A]; block[0x3B] = temp_block[0x3B];
273         block[0x23] = temp_block[0x34]; block[0x3C] = temp_block[0x2D];
274         block[0x07] = temp_block[0x26]; block[0x1F] = temp_block[0x1F];
275         block[0x0F] = temp_block[0x27]; block[0x35] = temp_block[0x2E];
276         if(last_non_zero_p1 <= 56) goto end;
277         block[0x2E] = temp_block[0x35]; block[0x33] = temp_block[0x3C];
278         block[0x3E] = temp_block[0x3D]; block[0x27] = temp_block[0x36];
279         block[0x3D] = temp_block[0x2F]; block[0x2F] = temp_block[0x37];
280         block[0x37] = temp_block[0x3E]; block[0x3F] = temp_block[0x3F];
281     }else if(s->dsp.idct_permutation_type == FF_LIBMPEG2_IDCT_PERM){
282         if(last_non_zero_p1 <= 1) goto end;
283         block[0x04] = temp_block[0x01];
284         block[0x08] = temp_block[0x08]; block[0x10] = temp_block[0x10];
285         if(last_non_zero_p1 <= 4) goto end;
286         block[0x0C] = temp_block[0x09]; block[0x01] = temp_block[0x02];
287         block[0x05] = temp_block[0x03];
288         if(last_non_zero_p1 <= 7) goto end;
289         block[0x09] = temp_block[0x0A]; block[0x14] = temp_block[0x11];
290         block[0x18] = temp_block[0x18]; block[0x20] = temp_block[0x20];
291         if(last_non_zero_p1 <= 11) goto end;
292         block[0x1C] = temp_block[0x19];
293         block[0x11] = temp_block[0x12]; block[0x0D] = temp_block[0x0B];
294         block[0x02] = temp_block[0x04]; block[0x06] = temp_block[0x05];
295         if(last_non_zero_p1 <= 16) goto end;
296         block[0x0A] = temp_block[0x0C]; block[0x15] = temp_block[0x13];
297         block[0x19] = temp_block[0x1A]; block[0x24] = temp_block[0x21];
298         block[0x28] = temp_block[0x28]; block[0x30] = temp_block[0x30];
299         block[0x2C] = temp_block[0x29]; block[0x21] = temp_block[0x22];
300         if(last_non_zero_p1 <= 24) goto end;
301         block[0x1D] = temp_block[0x1B]; block[0x12] = temp_block[0x14];
302         block[0x0E] = temp_block[0x0D]; block[0x03] = temp_block[0x06];
303         block[0x07] = temp_block[0x07]; block[0x0B] = temp_block[0x0E];
304         block[0x16] = temp_block[0x15]; block[0x1A] = temp_block[0x1C];
305         if(last_non_zero_p1 <= 32) goto end;
306         block[0x25] = temp_block[0x23]; block[0x29] = temp_block[0x2A];
307         block[0x34] = temp_block[0x31]; block[0x38] = temp_block[0x38];
308         block[0x3C] = temp_block[0x39]; block[0x31] = temp_block[0x32];
309         block[0x2D] = temp_block[0x2B]; block[0x22] = temp_block[0x24];
310         if(last_non_zero_p1 <= 40) goto end;
311         block[0x1E] = temp_block[0x1D]; block[0x13] = temp_block[0x16];
312         block[0x0F] = temp_block[0x0F]; block[0x17] = temp_block[0x17];
313         block[0x1B] = temp_block[0x1E]; block[0x26] = temp_block[0x25];
314         block[0x2A] = temp_block[0x2C]; block[0x35] = temp_block[0x33];
315         if(last_non_zero_p1 <= 48) goto end;
316         block[0x39] = temp_block[0x3A]; block[0x3D] = temp_block[0x3B];
317         block[0x32] = temp_block[0x34]; block[0x2E] = temp_block[0x2D];
318             block[0x23] = temp_block[0x26]; block[0x1F] = temp_block[0x1F];
319         block[0x27] = temp_block[0x27]; block[0x2B] = temp_block[0x2E];
320         if(last_non_zero_p1 <= 56) goto end;
321         block[0x36] = temp_block[0x35]; block[0x3A] = temp_block[0x3C];
322         block[0x3E] = temp_block[0x3D]; block[0x33] = temp_block[0x36];
323         block[0x2F] = temp_block[0x2F]; block[0x37] = temp_block[0x37];
324         block[0x3B] = temp_block[0x3E]; block[0x3F] = temp_block[0x3F];
325     }else{
326         if(last_non_zero_p1 <= 1) goto end;
327         block[0x01] = temp_block[0x01];
328         block[0x08] = temp_block[0x08]; block[0x10] = temp_block[0x10];
329         if(last_non_zero_p1 <= 4) goto end;
330         block[0x09] = temp_block[0x09]; block[0x02] = temp_block[0x02];
331         block[0x03] = temp_block[0x03];
332         if(last_non_zero_p1 <= 7) goto end;
333         block[0x0A] = temp_block[0x0A]; block[0x11] = temp_block[0x11];
334         block[0x18] = temp_block[0x18]; block[0x20] = temp_block[0x20];
335         if(last_non_zero_p1 <= 11) goto end;
336         block[0x19] = temp_block[0x19];
337         block[0x12] = temp_block[0x12]; block[0x0B] = temp_block[0x0B];
338         block[0x04] = temp_block[0x04]; block[0x05] = temp_block[0x05];
339         if(last_non_zero_p1 <= 16) goto end;
340         block[0x0C] = temp_block[0x0C]; block[0x13] = temp_block[0x13];
341         block[0x1A] = temp_block[0x1A]; block[0x21] = temp_block[0x21];
342         block[0x28] = temp_block[0x28]; block[0x30] = temp_block[0x30];
343         block[0x29] = temp_block[0x29]; block[0x22] = temp_block[0x22];
344         if(last_non_zero_p1 <= 24) goto end;
345         block[0x1B] = temp_block[0x1B]; block[0x14] = temp_block[0x14];
346         block[0x0D] = temp_block[0x0D]; block[0x06] = temp_block[0x06];
347         block[0x07] = temp_block[0x07]; block[0x0E] = temp_block[0x0E];
348         block[0x15] = temp_block[0x15]; block[0x1C] = temp_block[0x1C];
349         if(last_non_zero_p1 <= 32) goto end;
350         block[0x23] = temp_block[0x23]; block[0x2A] = temp_block[0x2A];
351         block[0x31] = temp_block[0x31]; block[0x38] = temp_block[0x38];
352         block[0x39] = temp_block[0x39]; block[0x32] = temp_block[0x32];
353         block[0x2B] = temp_block[0x2B]; block[0x24] = temp_block[0x24];
354         if(last_non_zero_p1 <= 40) goto end;
355         block[0x1D] = temp_block[0x1D]; block[0x16] = temp_block[0x16];
356         block[0x0F] = temp_block[0x0F]; block[0x17] = temp_block[0x17];
357         block[0x1E] = temp_block[0x1E]; block[0x25] = temp_block[0x25];
358         block[0x2C] = temp_block[0x2C]; block[0x33] = temp_block[0x33];
359         if(last_non_zero_p1 <= 48) goto end;
360         block[0x3A] = temp_block[0x3A]; block[0x3B] = temp_block[0x3B];
361         block[0x34] = temp_block[0x34]; block[0x2D] = temp_block[0x2D];
362         block[0x26] = temp_block[0x26]; block[0x1F] = temp_block[0x1F];
363         block[0x27] = temp_block[0x27]; block[0x2E] = temp_block[0x2E];
364         if(last_non_zero_p1 <= 56) goto end;
365         block[0x35] = temp_block[0x35]; block[0x3C] = temp_block[0x3C];
366         block[0x3D] = temp_block[0x3D]; block[0x36] = temp_block[0x36];
367         block[0x2F] = temp_block[0x2F]; block[0x37] = temp_block[0x37];
368         block[0x3E] = temp_block[0x3E]; block[0x3F] = temp_block[0x3F];
369     }
370     end:
371 /*
372     for(i=0; i<last_non_zero_p1; i++)
373     {
374        int j= zigzag_direct_noperm[i];
375        block[block_permute_op(j)]= temp_block[j];
376     }
377 */
378
379     return last_non_zero_p1 - 1;
380 }