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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 | #include <stdint.h> | |
24 | ||
25 | #include "libavutil/internal.h" | |
26 | #include "libavutil/x86/asm.h" | |
27 | #include "libavcodec/mpegvideo.h" | |
28 | #include "fdct.h" | |
29 | ||
30 | #undef MMREG_WIDTH | |
31 | #undef MM | |
32 | #undef MOVQ | |
33 | #undef SPREADW | |
34 | #undef PMAXW | |
35 | #undef PMAX | |
36 | #undef SAVE_SIGN | |
37 | #undef RESTORE_SIGN | |
38 | ||
39 | #if COMPILE_TEMPLATE_SSE2 | |
40 | #define MMREG_WIDTH "16" | |
41 | #define MM "%%xmm" | |
42 | #define MOVQ "movdqa" | |
43 | #define SPREADW(a) \ | |
44 | "pshuflw $0, "a", "a" \n\t"\ | |
45 | "punpcklwd "a", "a" \n\t" | |
46 | #define PMAXW(a,b) "pmaxsw "a", "b" \n\t" | |
47 | #define PMAX(a,b) \ | |
48 | "movhlps "a", "b" \n\t"\ | |
49 | PMAXW(b, a)\ | |
50 | "pshuflw $0x0E, "a", "b" \n\t"\ | |
51 | PMAXW(b, a)\ | |
52 | "pshuflw $0x01, "a", "b" \n\t"\ | |
53 | PMAXW(b, a) | |
54 | #else | |
55 | #define MMREG_WIDTH "8" | |
56 | #define MM "%%mm" | |
57 | #define MOVQ "movq" | |
58 | #if COMPILE_TEMPLATE_MMXEXT | |
59 | #define SPREADW(a) "pshufw $0, "a", "a" \n\t" | |
60 | #define PMAXW(a,b) "pmaxsw "a", "b" \n\t" | |
61 | #define PMAX(a,b) \ | |
62 | "pshufw $0x0E, "a", "b" \n\t"\ | |
63 | PMAXW(b, a)\ | |
64 | "pshufw $0x01, "a", "b" \n\t"\ | |
65 | PMAXW(b, a) | |
66 | #else | |
67 | #define SPREADW(a) \ | |
68 | "punpcklwd "a", "a" \n\t"\ | |
69 | "punpcklwd "a", "a" \n\t" | |
70 | #define PMAXW(a,b) \ | |
71 | "psubusw "a", "b" \n\t"\ | |
72 | "paddw "a", "b" \n\t" | |
73 | #define PMAX(a,b) \ | |
74 | "movq "a", "b" \n\t"\ | |
75 | "psrlq $32, "a" \n\t"\ | |
76 | PMAXW(b, a)\ | |
77 | "movq "a", "b" \n\t"\ | |
78 | "psrlq $16, "a" \n\t"\ | |
79 | PMAXW(b, a) | |
80 | ||
81 | #endif | |
82 | #endif | |
83 | ||
84 | #if COMPILE_TEMPLATE_SSSE3 | |
85 | #define SAVE_SIGN(a,b) \ | |
86 | "movdqa "b", "a" \n\t"\ | |
87 | "pabsw "b", "b" \n\t" | |
88 | #define RESTORE_SIGN(a,b) \ | |
89 | "psignw "a", "b" \n\t" | |
90 | #else | |
91 | #define SAVE_SIGN(a,b) \ | |
92 | "pxor "a", "a" \n\t"\ | |
93 | "pcmpgtw "b", "a" \n\t" /* block[i] <= 0 ? 0xFF : 0x00 */\ | |
94 | "pxor "a", "b" \n\t"\ | |
95 | "psubw "a", "b" \n\t" /* ABS(block[i]) */ | |
96 | #define RESTORE_SIGN(a,b) \ | |
97 | "pxor "a", "b" \n\t"\ | |
98 | "psubw "a", "b" \n\t" // out=((ABS(block[i])*qmat[0] - bias[0]*qmat[0])>>16)*sign(block[i]) | |
99 | #endif | |
100 | ||
101 | static int RENAME(dct_quantize)(MpegEncContext *s, | |
102 | int16_t *block, int n, | |
103 | int qscale, int *overflow) | |
104 | { | |
105 | x86_reg last_non_zero_p1; | |
106 | int level=0, q; //=0 is because gcc says uninitialized ... | |
107 | const uint16_t *qmat, *bias; | |
108 | LOCAL_ALIGNED_16(int16_t, temp_block, [64]); | |
109 | ||
110 | av_assert2((7&(int)(&temp_block[0])) == 0); //did gcc align it correctly? | |
111 | ||
112 | //s->fdct (block); | |
113 | RENAME_FDCT(ff_fdct)(block); // cannot be anything else ... | |
114 | ||
115 | if(s->dct_error_sum) | |
116 | s->denoise_dct(s, block); | |
117 | ||
118 | if (s->mb_intra) { | |
119 | int dummy; | |
120 | if (n < 4){ | |
121 | q = s->y_dc_scale; | |
122 | bias = s->q_intra_matrix16[qscale][1]; | |
123 | qmat = s->q_intra_matrix16[qscale][0]; | |
124 | }else{ | |
125 | q = s->c_dc_scale; | |
126 | bias = s->q_chroma_intra_matrix16[qscale][1]; | |
127 | qmat = s->q_chroma_intra_matrix16[qscale][0]; | |
128 | } | |
129 | /* note: block[0] is assumed to be positive */ | |
130 | if (!s->h263_aic) { | |
131 | __asm__ volatile ( | |
132 | "mul %%ecx \n\t" | |
133 | : "=d" (level), "=a"(dummy) | |
134 | : "a" ((block[0]>>2) + q), "c" (ff_inverse[q<<1]) | |
135 | ); | |
136 | } else | |
137 | /* For AIC we skip quant/dequant of INTRADC */ | |
138 | level = (block[0] + 4)>>3; | |
139 | ||
140 | block[0]=0; //avoid fake overflow | |
141 | // temp_block[0] = (block[0] + (q >> 1)) / q; | |
142 | last_non_zero_p1 = 1; | |
143 | } else { | |
144 | last_non_zero_p1 = 0; | |
145 | bias = s->q_inter_matrix16[qscale][1]; | |
146 | qmat = s->q_inter_matrix16[qscale][0]; | |
147 | } | |
148 | ||
149 | if((s->out_format == FMT_H263 || s->out_format == FMT_H261) && s->mpeg_quant==0){ | |
150 | ||
151 | __asm__ volatile( | |
152 | "movd %%"REG_a", "MM"3 \n\t" // last_non_zero_p1 | |
153 | SPREADW(MM"3") | |
154 | "pxor "MM"7, "MM"7 \n\t" // 0 | |
155 | "pxor "MM"4, "MM"4 \n\t" // 0 | |
156 | MOVQ" (%2), "MM"5 \n\t" // qmat[0] | |
157 | "pxor "MM"6, "MM"6 \n\t" | |
158 | "psubw (%3), "MM"6 \n\t" // -bias[0] | |
159 | "mov $-128, %%"REG_a" \n\t" | |
160 | ".p2align 4 \n\t" | |
161 | "1: \n\t" | |
162 | MOVQ" (%1, %%"REG_a"), "MM"0 \n\t" // block[i] | |
163 | SAVE_SIGN(MM"1", MM"0") // ABS(block[i]) | |
164 | "psubusw "MM"6, "MM"0 \n\t" // ABS(block[i]) + bias[0] | |
165 | "pmulhw "MM"5, "MM"0 \n\t" // (ABS(block[i])*qmat[0] - bias[0]*qmat[0])>>16 | |
166 | "por "MM"0, "MM"4 \n\t" | |
167 | RESTORE_SIGN(MM"1", MM"0") // out=((ABS(block[i])*qmat[0] - bias[0]*qmat[0])>>16)*sign(block[i]) | |
168 | MOVQ" "MM"0, (%5, %%"REG_a") \n\t" | |
169 | "pcmpeqw "MM"7, "MM"0 \n\t" // out==0 ? 0xFF : 0x00 | |
170 | MOVQ" (%4, %%"REG_a"), "MM"1 \n\t" | |
171 | MOVQ" "MM"7, (%1, %%"REG_a") \n\t" // 0 | |
172 | "pandn "MM"1, "MM"0 \n\t" | |
173 | PMAXW(MM"0", MM"3") | |
174 | "add $"MMREG_WIDTH", %%"REG_a" \n\t" | |
175 | " js 1b \n\t" | |
176 | PMAX(MM"3", MM"0") | |
177 | "movd "MM"3, %%"REG_a" \n\t" | |
178 | "movzbl %%al, %%eax \n\t" // last_non_zero_p1 | |
179 | : "+a" (last_non_zero_p1) | |
180 | : "r" (block+64), "r" (qmat), "r" (bias), | |
181 | "r" (inv_zigzag_direct16 + 64), "r" (temp_block + 64) | |
182 | XMM_CLOBBERS_ONLY("%xmm0", "%xmm1", "%xmm2", "%xmm3", | |
183 | "%xmm4", "%xmm5", "%xmm6", "%xmm7") | |
184 | ); | |
185 | }else{ // FMT_H263 | |
186 | __asm__ volatile( | |
187 | "movd %%"REG_a", "MM"3 \n\t" // last_non_zero_p1 | |
188 | SPREADW(MM"3") | |
189 | "pxor "MM"7, "MM"7 \n\t" // 0 | |
190 | "pxor "MM"4, "MM"4 \n\t" // 0 | |
191 | "mov $-128, %%"REG_a" \n\t" | |
192 | ".p2align 4 \n\t" | |
193 | "1: \n\t" | |
194 | MOVQ" (%1, %%"REG_a"), "MM"0 \n\t" // block[i] | |
195 | SAVE_SIGN(MM"1", MM"0") // ABS(block[i]) | |
196 | MOVQ" (%3, %%"REG_a"), "MM"6 \n\t" // bias[0] | |
197 | "paddusw "MM"6, "MM"0 \n\t" // ABS(block[i]) + bias[0] | |
198 | MOVQ" (%2, %%"REG_a"), "MM"5 \n\t" // qmat[i] | |
199 | "pmulhw "MM"5, "MM"0 \n\t" // (ABS(block[i])*qmat[0] + bias[0]*qmat[0])>>16 | |
200 | "por "MM"0, "MM"4 \n\t" | |
201 | RESTORE_SIGN(MM"1", MM"0") // out=((ABS(block[i])*qmat[0] - bias[0]*qmat[0])>>16)*sign(block[i]) | |
202 | MOVQ" "MM"0, (%5, %%"REG_a") \n\t" | |
203 | "pcmpeqw "MM"7, "MM"0 \n\t" // out==0 ? 0xFF : 0x00 | |
204 | MOVQ" (%4, %%"REG_a"), "MM"1 \n\t" | |
205 | MOVQ" "MM"7, (%1, %%"REG_a") \n\t" // 0 | |
206 | "pandn "MM"1, "MM"0 \n\t" | |
207 | PMAXW(MM"0", MM"3") | |
208 | "add $"MMREG_WIDTH", %%"REG_a" \n\t" | |
209 | " js 1b \n\t" | |
210 | PMAX(MM"3", MM"0") | |
211 | "movd "MM"3, %%"REG_a" \n\t" | |
212 | "movzbl %%al, %%eax \n\t" // last_non_zero_p1 | |
213 | : "+a" (last_non_zero_p1) | |
214 | : "r" (block+64), "r" (qmat+64), "r" (bias+64), | |
215 | "r" (inv_zigzag_direct16 + 64), "r" (temp_block + 64) | |
216 | XMM_CLOBBERS_ONLY("%xmm0", "%xmm1", "%xmm2", "%xmm3", | |
217 | "%xmm4", "%xmm5", "%xmm6", "%xmm7") | |
218 | ); | |
219 | } | |
220 | __asm__ volatile( | |
221 | "movd %1, "MM"1 \n\t" // max_qcoeff | |
222 | SPREADW(MM"1") | |
223 | "psubusw "MM"1, "MM"4 \n\t" | |
224 | "packuswb "MM"4, "MM"4 \n\t" | |
225 | #if COMPILE_TEMPLATE_SSE2 | |
226 | "packsswb "MM"4, "MM"4 \n\t" | |
227 | #endif | |
228 | "movd "MM"4, %0 \n\t" // *overflow | |
229 | : "=g" (*overflow) | |
230 | : "g" (s->max_qcoeff) | |
231 | ); | |
232 | ||
233 | if(s->mb_intra) block[0]= level; | |
234 | else block[0]= temp_block[0]; | |
235 | ||
236 | if (s->idsp.perm_type == FF_IDCT_PERM_SIMPLE) { | |
237 | if(last_non_zero_p1 <= 1) goto end; | |
238 | block[0x08] = temp_block[0x01]; block[0x10] = temp_block[0x08]; | |
239 | block[0x20] = temp_block[0x10]; | |
240 | if(last_non_zero_p1 <= 4) goto end; | |
241 | block[0x18] = temp_block[0x09]; block[0x04] = temp_block[0x02]; | |
242 | block[0x09] = temp_block[0x03]; | |
243 | if(last_non_zero_p1 <= 7) goto end; | |
244 | block[0x14] = temp_block[0x0A]; block[0x28] = temp_block[0x11]; | |
245 | block[0x12] = temp_block[0x18]; block[0x02] = temp_block[0x20]; | |
246 | if(last_non_zero_p1 <= 11) goto end; | |
247 | block[0x1A] = temp_block[0x19]; block[0x24] = temp_block[0x12]; | |
248 | block[0x19] = temp_block[0x0B]; block[0x01] = temp_block[0x04]; | |
249 | block[0x0C] = temp_block[0x05]; | |
250 | if(last_non_zero_p1 <= 16) goto end; | |
251 | block[0x11] = temp_block[0x0C]; block[0x29] = temp_block[0x13]; | |
252 | block[0x16] = temp_block[0x1A]; block[0x0A] = temp_block[0x21]; | |
253 | block[0x30] = temp_block[0x28]; block[0x22] = temp_block[0x30]; | |
254 | block[0x38] = temp_block[0x29]; block[0x06] = temp_block[0x22]; | |
255 | if(last_non_zero_p1 <= 24) goto end; | |
256 | block[0x1B] = temp_block[0x1B]; block[0x21] = temp_block[0x14]; | |
257 | block[0x1C] = temp_block[0x0D]; block[0x05] = temp_block[0x06]; | |
258 | block[0x0D] = temp_block[0x07]; block[0x15] = temp_block[0x0E]; | |
259 | block[0x2C] = temp_block[0x15]; block[0x13] = temp_block[0x1C]; | |
260 | if(last_non_zero_p1 <= 32) goto end; | |
261 | block[0x0B] = temp_block[0x23]; block[0x34] = temp_block[0x2A]; | |
262 | block[0x2A] = temp_block[0x31]; block[0x32] = temp_block[0x38]; | |
263 | block[0x3A] = temp_block[0x39]; block[0x26] = temp_block[0x32]; | |
264 | block[0x39] = temp_block[0x2B]; block[0x03] = temp_block[0x24]; | |
265 | if(last_non_zero_p1 <= 40) goto end; | |
266 | block[0x1E] = temp_block[0x1D]; block[0x25] = temp_block[0x16]; | |
267 | block[0x1D] = temp_block[0x0F]; block[0x2D] = temp_block[0x17]; | |
268 | block[0x17] = temp_block[0x1E]; block[0x0E] = temp_block[0x25]; | |
269 | block[0x31] = temp_block[0x2C]; block[0x2B] = temp_block[0x33]; | |
270 | if(last_non_zero_p1 <= 48) goto end; | |
271 | block[0x36] = temp_block[0x3A]; block[0x3B] = temp_block[0x3B]; | |
272 | block[0x23] = temp_block[0x34]; block[0x3C] = temp_block[0x2D]; | |
273 | block[0x07] = temp_block[0x26]; block[0x1F] = temp_block[0x1F]; | |
274 | block[0x0F] = temp_block[0x27]; block[0x35] = temp_block[0x2E]; | |
275 | if(last_non_zero_p1 <= 56) goto end; | |
276 | block[0x2E] = temp_block[0x35]; block[0x33] = temp_block[0x3C]; | |
277 | block[0x3E] = temp_block[0x3D]; block[0x27] = temp_block[0x36]; | |
278 | block[0x3D] = temp_block[0x2F]; block[0x2F] = temp_block[0x37]; | |
279 | block[0x37] = temp_block[0x3E]; block[0x3F] = temp_block[0x3F]; | |
280 | }else if(s->idsp.perm_type == FF_IDCT_PERM_LIBMPEG2){ | |
281 | if(last_non_zero_p1 <= 1) goto end; | |
282 | block[0x04] = temp_block[0x01]; | |
283 | block[0x08] = temp_block[0x08]; block[0x10] = temp_block[0x10]; | |
284 | if(last_non_zero_p1 <= 4) goto end; | |
285 | block[0x0C] = temp_block[0x09]; block[0x01] = temp_block[0x02]; | |
286 | block[0x05] = temp_block[0x03]; | |
287 | if(last_non_zero_p1 <= 7) goto end; | |
288 | block[0x09] = temp_block[0x0A]; block[0x14] = temp_block[0x11]; | |
289 | block[0x18] = temp_block[0x18]; block[0x20] = temp_block[0x20]; | |
290 | if(last_non_zero_p1 <= 11) goto end; | |
291 | block[0x1C] = temp_block[0x19]; | |
292 | block[0x11] = temp_block[0x12]; block[0x0D] = temp_block[0x0B]; | |
293 | block[0x02] = temp_block[0x04]; block[0x06] = temp_block[0x05]; | |
294 | if(last_non_zero_p1 <= 16) goto end; | |
295 | block[0x0A] = temp_block[0x0C]; block[0x15] = temp_block[0x13]; | |
296 | block[0x19] = temp_block[0x1A]; block[0x24] = temp_block[0x21]; | |
297 | block[0x28] = temp_block[0x28]; block[0x30] = temp_block[0x30]; | |
298 | block[0x2C] = temp_block[0x29]; block[0x21] = temp_block[0x22]; | |
299 | if(last_non_zero_p1 <= 24) goto end; | |
300 | block[0x1D] = temp_block[0x1B]; block[0x12] = temp_block[0x14]; | |
301 | block[0x0E] = temp_block[0x0D]; block[0x03] = temp_block[0x06]; | |
302 | block[0x07] = temp_block[0x07]; block[0x0B] = temp_block[0x0E]; | |
303 | block[0x16] = temp_block[0x15]; block[0x1A] = temp_block[0x1C]; | |
304 | if(last_non_zero_p1 <= 32) goto end; | |
305 | block[0x25] = temp_block[0x23]; block[0x29] = temp_block[0x2A]; | |
306 | block[0x34] = temp_block[0x31]; block[0x38] = temp_block[0x38]; | |
307 | block[0x3C] = temp_block[0x39]; block[0x31] = temp_block[0x32]; | |
308 | block[0x2D] = temp_block[0x2B]; block[0x22] = temp_block[0x24]; | |
309 | if(last_non_zero_p1 <= 40) goto end; | |
310 | block[0x1E] = temp_block[0x1D]; block[0x13] = temp_block[0x16]; | |
311 | block[0x0F] = temp_block[0x0F]; block[0x17] = temp_block[0x17]; | |
312 | block[0x1B] = temp_block[0x1E]; block[0x26] = temp_block[0x25]; | |
313 | block[0x2A] = temp_block[0x2C]; block[0x35] = temp_block[0x33]; | |
314 | if(last_non_zero_p1 <= 48) goto end; | |
315 | block[0x39] = temp_block[0x3A]; block[0x3D] = temp_block[0x3B]; | |
316 | block[0x32] = temp_block[0x34]; block[0x2E] = temp_block[0x2D]; | |
317 | block[0x23] = temp_block[0x26]; block[0x1F] = temp_block[0x1F]; | |
318 | block[0x27] = temp_block[0x27]; block[0x2B] = temp_block[0x2E]; | |
319 | if(last_non_zero_p1 <= 56) goto end; | |
320 | block[0x36] = temp_block[0x35]; block[0x3A] = temp_block[0x3C]; | |
321 | block[0x3E] = temp_block[0x3D]; block[0x33] = temp_block[0x36]; | |
322 | block[0x2F] = temp_block[0x2F]; block[0x37] = temp_block[0x37]; | |
323 | block[0x3B] = temp_block[0x3E]; block[0x3F] = temp_block[0x3F]; | |
324 | }else{ | |
325 | if(last_non_zero_p1 <= 1) goto end; | |
326 | block[0x01] = temp_block[0x01]; | |
327 | block[0x08] = temp_block[0x08]; block[0x10] = temp_block[0x10]; | |
328 | if(last_non_zero_p1 <= 4) goto end; | |
329 | block[0x09] = temp_block[0x09]; block[0x02] = temp_block[0x02]; | |
330 | block[0x03] = temp_block[0x03]; | |
331 | if(last_non_zero_p1 <= 7) goto end; | |
332 | block[0x0A] = temp_block[0x0A]; block[0x11] = temp_block[0x11]; | |
333 | block[0x18] = temp_block[0x18]; block[0x20] = temp_block[0x20]; | |
334 | if(last_non_zero_p1 <= 11) goto end; | |
335 | block[0x19] = temp_block[0x19]; | |
336 | block[0x12] = temp_block[0x12]; block[0x0B] = temp_block[0x0B]; | |
337 | block[0x04] = temp_block[0x04]; block[0x05] = temp_block[0x05]; | |
338 | if(last_non_zero_p1 <= 16) goto end; | |
339 | block[0x0C] = temp_block[0x0C]; block[0x13] = temp_block[0x13]; | |
340 | block[0x1A] = temp_block[0x1A]; block[0x21] = temp_block[0x21]; | |
341 | block[0x28] = temp_block[0x28]; block[0x30] = temp_block[0x30]; | |
342 | block[0x29] = temp_block[0x29]; block[0x22] = temp_block[0x22]; | |
343 | if(last_non_zero_p1 <= 24) goto end; | |
344 | block[0x1B] = temp_block[0x1B]; block[0x14] = temp_block[0x14]; | |
345 | block[0x0D] = temp_block[0x0D]; block[0x06] = temp_block[0x06]; | |
346 | block[0x07] = temp_block[0x07]; block[0x0E] = temp_block[0x0E]; | |
347 | block[0x15] = temp_block[0x15]; block[0x1C] = temp_block[0x1C]; | |
348 | if(last_non_zero_p1 <= 32) goto end; | |
349 | block[0x23] = temp_block[0x23]; block[0x2A] = temp_block[0x2A]; | |
350 | block[0x31] = temp_block[0x31]; block[0x38] = temp_block[0x38]; | |
351 | block[0x39] = temp_block[0x39]; block[0x32] = temp_block[0x32]; | |
352 | block[0x2B] = temp_block[0x2B]; block[0x24] = temp_block[0x24]; | |
353 | if(last_non_zero_p1 <= 40) goto end; | |
354 | block[0x1D] = temp_block[0x1D]; block[0x16] = temp_block[0x16]; | |
355 | block[0x0F] = temp_block[0x0F]; block[0x17] = temp_block[0x17]; | |
356 | block[0x1E] = temp_block[0x1E]; block[0x25] = temp_block[0x25]; | |
357 | block[0x2C] = temp_block[0x2C]; block[0x33] = temp_block[0x33]; | |
358 | if(last_non_zero_p1 <= 48) goto end; | |
359 | block[0x3A] = temp_block[0x3A]; block[0x3B] = temp_block[0x3B]; | |
360 | block[0x34] = temp_block[0x34]; block[0x2D] = temp_block[0x2D]; | |
361 | block[0x26] = temp_block[0x26]; block[0x1F] = temp_block[0x1F]; | |
362 | block[0x27] = temp_block[0x27]; block[0x2E] = temp_block[0x2E]; | |
363 | if(last_non_zero_p1 <= 56) goto end; | |
364 | block[0x35] = temp_block[0x35]; block[0x3C] = temp_block[0x3C]; | |
365 | block[0x3D] = temp_block[0x3D]; block[0x36] = temp_block[0x36]; | |
366 | block[0x2F] = temp_block[0x2F]; block[0x37] = temp_block[0x37]; | |
367 | block[0x3E] = temp_block[0x3E]; block[0x3F] = temp_block[0x3F]; | |
368 | } | |
369 | end: | |
370 | return last_non_zero_p1 - 1; | |
371 | } |