Libav
mpegvideoenc_template.c
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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 Libav.
7  *
8  * Libav 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  * Libav 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 Libav; 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 
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  assert((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  else
123  q = s->c_dc_scale;
124  /* note: block[0] is assumed to be positive */
125  if (!s->h263_aic) {
126  __asm__ volatile (
127  "mul %%ecx \n\t"
128  : "=d" (level), "=a"(dummy)
129  : "a" ((block[0]>>2) + q), "c" (ff_inverse[q<<1])
130  );
131  } else
132  /* For AIC we skip quant/dequant of INTRADC */
133  level = (block[0] + 4)>>3;
134 
135  block[0]=0; //avoid fake overflow
136 // temp_block[0] = (block[0] + (q >> 1)) / q;
137  last_non_zero_p1 = 1;
138  bias = s->q_intra_matrix16[qscale][1];
139  qmat = s->q_intra_matrix16[qscale][0];
140  } else {
141  last_non_zero_p1 = 0;
142  bias = s->q_inter_matrix16[qscale][1];
143  qmat = s->q_inter_matrix16[qscale][0];
144  }
145 
146  if((s->out_format == FMT_H263 || s->out_format == FMT_H261) && s->mpeg_quant==0){
147 
148  __asm__ volatile(
149  "movd %%"REG_a", "MM"3 \n\t" // last_non_zero_p1
150  SPREADW(MM"3")
151  "pxor "MM"7, "MM"7 \n\t" // 0
152  "pxor "MM"4, "MM"4 \n\t" // 0
153  MOVQ" (%2), "MM"5 \n\t" // qmat[0]
154  "pxor "MM"6, "MM"6 \n\t"
155  "psubw (%3), "MM"6 \n\t" // -bias[0]
156  "mov $-128, %%"REG_a" \n\t"
157  ".p2align 4 \n\t"
158  "1: \n\t"
159  MOVQ" (%1, %%"REG_a"), "MM"0 \n\t" // block[i]
160  SAVE_SIGN(MM"1", MM"0") // ABS(block[i])
161  "psubusw "MM"6, "MM"0 \n\t" // ABS(block[i]) + bias[0]
162  "pmulhw "MM"5, "MM"0 \n\t" // (ABS(block[i])*qmat[0] - bias[0]*qmat[0])>>16
163  "por "MM"0, "MM"4 \n\t"
164  RESTORE_SIGN(MM"1", MM"0") // out=((ABS(block[i])*qmat[0] - bias[0]*qmat[0])>>16)*sign(block[i])
165  MOVQ" "MM"0, (%5, %%"REG_a") \n\t"
166  "pcmpeqw "MM"7, "MM"0 \n\t" // out==0 ? 0xFF : 0x00
167  MOVQ" (%4, %%"REG_a"), "MM"1 \n\t"
168  MOVQ" "MM"7, (%1, %%"REG_a") \n\t" // 0
169  "pandn "MM"1, "MM"0 \n\t"
170  PMAXW(MM"0", MM"3")
171  "add $"MMREG_WIDTH", %%"REG_a" \n\t"
172  " js 1b \n\t"
173  PMAX(MM"3", MM"0")
174  "movd "MM"3, %%"REG_a" \n\t"
175  "movzb %%al, %%"REG_a" \n\t" // last_non_zero_p1
176  : "+a" (last_non_zero_p1)
177  : "r" (block+64), "r" (qmat), "r" (bias),
178  "r" (inv_zigzag_direct16 + 64), "r" (temp_block + 64)
179  XMM_CLOBBERS_ONLY("%xmm0", "%xmm1", "%xmm2", "%xmm3",
180  "%xmm4", "%xmm5", "%xmm6", "%xmm7")
181  );
182  }else{ // FMT_H263
183  __asm__ volatile(
184  "movd %%"REG_a", "MM"3 \n\t" // last_non_zero_p1
185  SPREADW(MM"3")
186  "pxor "MM"7, "MM"7 \n\t" // 0
187  "pxor "MM"4, "MM"4 \n\t" // 0
188  "mov $-128, %%"REG_a" \n\t"
189  ".p2align 4 \n\t"
190  "1: \n\t"
191  MOVQ" (%1, %%"REG_a"), "MM"0 \n\t" // block[i]
192  SAVE_SIGN(MM"1", MM"0") // ABS(block[i])
193  MOVQ" (%3, %%"REG_a"), "MM"6 \n\t" // bias[0]
194  "paddusw "MM"6, "MM"0 \n\t" // ABS(block[i]) + bias[0]
195  MOVQ" (%2, %%"REG_a"), "MM"5 \n\t" // qmat[i]
196  "pmulhw "MM"5, "MM"0 \n\t" // (ABS(block[i])*qmat[0] + bias[0]*qmat[0])>>16
197  "por "MM"0, "MM"4 \n\t"
198  RESTORE_SIGN(MM"1", MM"0") // out=((ABS(block[i])*qmat[0] - bias[0]*qmat[0])>>16)*sign(block[i])
199  MOVQ" "MM"0, (%5, %%"REG_a") \n\t"
200  "pcmpeqw "MM"7, "MM"0 \n\t" // out==0 ? 0xFF : 0x00
201  MOVQ" (%4, %%"REG_a"), "MM"1 \n\t"
202  MOVQ" "MM"7, (%1, %%"REG_a") \n\t" // 0
203  "pandn "MM"1, "MM"0 \n\t"
204  PMAXW(MM"0", MM"3")
205  "add $"MMREG_WIDTH", %%"REG_a" \n\t"
206  " js 1b \n\t"
207  PMAX(MM"3", MM"0")
208  "movd "MM"3, %%"REG_a" \n\t"
209  "movzb %%al, %%"REG_a" \n\t" // last_non_zero_p1
210  : "+a" (last_non_zero_p1)
211  : "r" (block+64), "r" (qmat+64), "r" (bias+64),
212  "r" (inv_zigzag_direct16 + 64), "r" (temp_block + 64)
213  XMM_CLOBBERS_ONLY("%xmm0", "%xmm1", "%xmm2", "%xmm3",
214  "%xmm4", "%xmm5", "%xmm6", "%xmm7")
215  );
216  }
217  __asm__ volatile(
218  "movd %1, "MM"1 \n\t" // max_qcoeff
219  SPREADW(MM"1")
220  "psubusw "MM"1, "MM"4 \n\t"
221  "packuswb "MM"4, "MM"4 \n\t"
222 #if COMPILE_TEMPLATE_SSE2
223  "packuswb "MM"4, "MM"4 \n\t"
224 #endif
225  "movd "MM"4, %0 \n\t" // *overflow
226  : "=g" (*overflow)
227  : "g" (s->max_qcoeff)
228  );
229 
230  if(s->mb_intra) block[0]= level;
231  else block[0]= temp_block[0];
232 
233  if (s->idsp.perm_type == FF_IDCT_PERM_SIMPLE) {
234  if(last_non_zero_p1 <= 1) goto end;
235  block[0x08] = temp_block[0x01]; block[0x10] = temp_block[0x08];
236  block[0x20] = temp_block[0x10];
237  if(last_non_zero_p1 <= 4) goto end;
238  block[0x18] = temp_block[0x09]; block[0x04] = temp_block[0x02];
239  block[0x09] = temp_block[0x03];
240  if(last_non_zero_p1 <= 7) goto end;
241  block[0x14] = temp_block[0x0A]; block[0x28] = temp_block[0x11];
242  block[0x12] = temp_block[0x18]; block[0x02] = temp_block[0x20];
243  if(last_non_zero_p1 <= 11) goto end;
244  block[0x1A] = temp_block[0x19]; block[0x24] = temp_block[0x12];
245  block[0x19] = temp_block[0x0B]; block[0x01] = temp_block[0x04];
246  block[0x0C] = temp_block[0x05];
247  if(last_non_zero_p1 <= 16) goto end;
248  block[0x11] = temp_block[0x0C]; block[0x29] = temp_block[0x13];
249  block[0x16] = temp_block[0x1A]; block[0x0A] = temp_block[0x21];
250  block[0x30] = temp_block[0x28]; block[0x22] = temp_block[0x30];
251  block[0x38] = temp_block[0x29]; block[0x06] = temp_block[0x22];
252  if(last_non_zero_p1 <= 24) goto end;
253  block[0x1B] = temp_block[0x1B]; block[0x21] = temp_block[0x14];
254  block[0x1C] = temp_block[0x0D]; block[0x05] = temp_block[0x06];
255  block[0x0D] = temp_block[0x07]; block[0x15] = temp_block[0x0E];
256  block[0x2C] = temp_block[0x15]; block[0x13] = temp_block[0x1C];
257  if(last_non_zero_p1 <= 32) goto end;
258  block[0x0B] = temp_block[0x23]; block[0x34] = temp_block[0x2A];
259  block[0x2A] = temp_block[0x31]; block[0x32] = temp_block[0x38];
260  block[0x3A] = temp_block[0x39]; block[0x26] = temp_block[0x32];
261  block[0x39] = temp_block[0x2B]; block[0x03] = temp_block[0x24];
262  if(last_non_zero_p1 <= 40) goto end;
263  block[0x1E] = temp_block[0x1D]; block[0x25] = temp_block[0x16];
264  block[0x1D] = temp_block[0x0F]; block[0x2D] = temp_block[0x17];
265  block[0x17] = temp_block[0x1E]; block[0x0E] = temp_block[0x25];
266  block[0x31] = temp_block[0x2C]; block[0x2B] = temp_block[0x33];
267  if(last_non_zero_p1 <= 48) goto end;
268  block[0x36] = temp_block[0x3A]; block[0x3B] = temp_block[0x3B];
269  block[0x23] = temp_block[0x34]; block[0x3C] = temp_block[0x2D];
270  block[0x07] = temp_block[0x26]; block[0x1F] = temp_block[0x1F];
271  block[0x0F] = temp_block[0x27]; block[0x35] = temp_block[0x2E];
272  if(last_non_zero_p1 <= 56) goto end;
273  block[0x2E] = temp_block[0x35]; block[0x33] = temp_block[0x3C];
274  block[0x3E] = temp_block[0x3D]; block[0x27] = temp_block[0x36];
275  block[0x3D] = temp_block[0x2F]; block[0x2F] = temp_block[0x37];
276  block[0x37] = temp_block[0x3E]; block[0x3F] = temp_block[0x3F];
277  }else{
278  if(last_non_zero_p1 <= 1) goto end;
279  block[0x01] = temp_block[0x01];
280  block[0x08] = temp_block[0x08]; block[0x10] = temp_block[0x10];
281  if(last_non_zero_p1 <= 4) goto end;
282  block[0x09] = temp_block[0x09]; block[0x02] = temp_block[0x02];
283  block[0x03] = temp_block[0x03];
284  if(last_non_zero_p1 <= 7) goto end;
285  block[0x0A] = temp_block[0x0A]; block[0x11] = temp_block[0x11];
286  block[0x18] = temp_block[0x18]; block[0x20] = temp_block[0x20];
287  if(last_non_zero_p1 <= 11) goto end;
288  block[0x19] = temp_block[0x19];
289  block[0x12] = temp_block[0x12]; block[0x0B] = temp_block[0x0B];
290  block[0x04] = temp_block[0x04]; block[0x05] = temp_block[0x05];
291  if(last_non_zero_p1 <= 16) goto end;
292  block[0x0C] = temp_block[0x0C]; block[0x13] = temp_block[0x13];
293  block[0x1A] = temp_block[0x1A]; block[0x21] = temp_block[0x21];
294  block[0x28] = temp_block[0x28]; block[0x30] = temp_block[0x30];
295  block[0x29] = temp_block[0x29]; block[0x22] = temp_block[0x22];
296  if(last_non_zero_p1 <= 24) goto end;
297  block[0x1B] = temp_block[0x1B]; block[0x14] = temp_block[0x14];
298  block[0x0D] = temp_block[0x0D]; block[0x06] = temp_block[0x06];
299  block[0x07] = temp_block[0x07]; block[0x0E] = temp_block[0x0E];
300  block[0x15] = temp_block[0x15]; block[0x1C] = temp_block[0x1C];
301  if(last_non_zero_p1 <= 32) goto end;
302  block[0x23] = temp_block[0x23]; block[0x2A] = temp_block[0x2A];
303  block[0x31] = temp_block[0x31]; block[0x38] = temp_block[0x38];
304  block[0x39] = temp_block[0x39]; block[0x32] = temp_block[0x32];
305  block[0x2B] = temp_block[0x2B]; block[0x24] = temp_block[0x24];
306  if(last_non_zero_p1 <= 40) goto end;
307  block[0x1D] = temp_block[0x1D]; block[0x16] = temp_block[0x16];
308  block[0x0F] = temp_block[0x0F]; block[0x17] = temp_block[0x17];
309  block[0x1E] = temp_block[0x1E]; block[0x25] = temp_block[0x25];
310  block[0x2C] = temp_block[0x2C]; block[0x33] = temp_block[0x33];
311  if(last_non_zero_p1 <= 48) goto end;
312  block[0x3A] = temp_block[0x3A]; block[0x3B] = temp_block[0x3B];
313  block[0x34] = temp_block[0x34]; block[0x2D] = temp_block[0x2D];
314  block[0x26] = temp_block[0x26]; block[0x1F] = temp_block[0x1F];
315  block[0x27] = temp_block[0x27]; block[0x2E] = temp_block[0x2E];
316  if(last_non_zero_p1 <= 56) goto end;
317  block[0x35] = temp_block[0x35]; block[0x3C] = temp_block[0x3C];
318  block[0x3D] = temp_block[0x3D]; block[0x36] = temp_block[0x36];
319  block[0x2F] = temp_block[0x2F]; block[0x37] = temp_block[0x37];
320  block[0x3E] = temp_block[0x3E]; block[0x3F] = temp_block[0x3F];
321  }
322  end:
323  return last_non_zero_p1 - 1;
324 }
#define PMAXW(a, b)
#define RENAME(a)
static int RENAME() dct_quantize(MpegEncContext *s, int16_t *block, int n, int qscale, int *overflow)
#define MOVQ
mpegvideo header.
static uint16_t inv_zigzag_direct16[64]
Definition: mpegvideoenc.c:31
#define PMAX(a, b)
const uint32_t ff_inverse[257]
Definition: mathtables.c:25
int x86_reg
Definition: asm.h:70
#define XMM_CLOBBERS_ONLY(...)
Definition: asm.h:97
#define RESTORE_SIGN(a, b)
#define MM
common internal API header
#define SAVE_SIGN(a, b)
uint8_t level
Definition: svq3.c:147
MpegEncContext.
Definition: mpegvideo.h:204
#define SPREADW(a)
#define LOCAL_ALIGNED_16(t, v,...)
Definition: internal.h:114
#define MMREG_WIDTH
static int16_t block[64]
Definition: dct-test.c:88