Statistics
| Branch: | Revision:

ffmpeg / libavcodec / i386 / mpegvideo_mmx_template.c @ 36cd3069

History | View | Annotate | Download (16.7 KB)

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
#undef SPREADW
23
#undef PMAXW
24
#undef PMAX
25
#ifdef HAVE_MMX2
26
#define SPREADW(a) "pshufw $0, " #a ", " #a " \n\t"
27
#define PMAXW(a,b) "pmaxsw " #a ", " #b "     \n\t"
28
#define PMAX(a,b) \
29
            "pshufw $0x0E," #a ", " #b "        \n\t"\
30
            PMAXW(b, a)\
31
            "pshufw $0x01," #a ", " #b "        \n\t"\
32
            PMAXW(b, a)
33
#else
34
#define SPREADW(a) \
35
        "punpcklwd " #a ", " #a " \n\t"\
36
        "punpcklwd " #a ", " #a " \n\t"
37
#define PMAXW(a,b) \
38
        "psubusw " #a ", " #b " \n\t"\
39
        "paddw " #a ", " #b "   \n\t"
40
#define PMAX(a,b)  \
41
            "movq " #a ", " #b "                \n\t"\
42
            "psrlq $32, " #a "                  \n\t"\
43
            PMAXW(b, a)\
44
            "movq " #a ", " #b "                \n\t"\
45
            "psrlq $16, " #a "                  \n\t"\
46
            PMAXW(b, a)
47

    
48
#endif
49

    
50
static int RENAME(dct_quantize)(MpegEncContext *s,
51
                            DCTELEM *block, int n,
52
                            int qscale, int *overflow)
53
{
54
    long last_non_zero_p1;
55
    int level=0, q; //=0 is cuz gcc says uninitalized ...
56
    const uint16_t *qmat, *bias;
57
    DECLARE_ALIGNED_8(int16_t, temp_block[64]);
58

    
59
    assert((7&(int)(&temp_block[0])) == 0); //did gcc align it correctly?
60

    
61
    //s->fdct (block);
62
    RENAMEl(ff_fdct) (block); //cant be anything else ...
63

    
64
    if(s->dct_error_sum)
65
        s->denoise_dct(s, block);
66

    
67
    if (s->mb_intra) {
68
        int dummy;
69
        if (n < 4)
70
            q = s->y_dc_scale;
71
        else
72
            q = s->c_dc_scale;
73
        /* note: block[0] is assumed to be positive */
74
        if (!s->h263_aic) {
75
#if 1
76
        asm volatile (
77
                "mul %%ecx                \n\t"
78
                : "=d" (level), "=a"(dummy)
79
                : "a" ((block[0]>>2) + q), "c" (ff_inverse[q<<1])
80
        );
81
#else
82
        asm volatile (
83
                "xorl %%edx, %%edx        \n\t"
84
                "divw %%cx                \n\t"
85
                "movzwl %%ax, %%eax       \n\t"
86
                : "=a" (level)
87
                : "a" ((block[0]>>2) + q), "c" (q<<1)
88
                : "%edx"
89
        );
90
#endif
91
        } else
92
            /* For AIC we skip quant/dequant of INTRADC */
93
            level = (block[0] + 4)>>3;
94

    
95
        block[0]=0; //avoid fake overflow
96
//        temp_block[0] = (block[0] + (q >> 1)) / q;
97
        last_non_zero_p1 = 1;
98
        bias = s->q_intra_matrix16[qscale][1];
99
        qmat = s->q_intra_matrix16[qscale][0];
100
    } else {
101
        last_non_zero_p1 = 0;
102
        bias = s->q_inter_matrix16[qscale][1];
103
        qmat = s->q_inter_matrix16[qscale][0];
104
    }
105

    
106
    if((s->out_format == FMT_H263 || s->out_format == FMT_H261) && s->mpeg_quant==0){
107

    
108
        asm volatile(
109
            "movd %%"REG_a", %%mm3              \n\t" // last_non_zero_p1
110
            SPREADW(%%mm3)
111
            "pxor %%mm7, %%mm7                  \n\t" // 0
112
            "pxor %%mm4, %%mm4                  \n\t" // 0
113
            "movq (%2), %%mm5                   \n\t" // qmat[0]
114
            "pxor %%mm6, %%mm6                  \n\t"
115
            "psubw (%3), %%mm6                  \n\t" // -bias[0]
116
            "mov $-128, %%"REG_a"               \n\t"
117
            ASMALIGN(4)
118
            "1:                                 \n\t"
119
            "pxor %%mm1, %%mm1                  \n\t" // 0
120
            "movq (%1, %%"REG_a"), %%mm0        \n\t" // block[i]
121
            "pcmpgtw %%mm0, %%mm1               \n\t" // block[i] <= 0 ? 0xFF : 0x00
122
            "pxor %%mm1, %%mm0                  \n\t"
123
            "psubw %%mm1, %%mm0                 \n\t" // ABS(block[i])
124
            "psubusw %%mm6, %%mm0               \n\t" // ABS(block[i]) + bias[0]
125
            "pmulhw %%mm5, %%mm0                \n\t" // (ABS(block[i])*qmat[0] - bias[0]*qmat[0])>>16
126
            "por %%mm0, %%mm4                   \n\t"
127
            "pxor %%mm1, %%mm0                  \n\t"
128
            "psubw %%mm1, %%mm0                 \n\t" // out=((ABS(block[i])*qmat[0] - bias[0]*qmat[0])>>16)*sign(block[i])
129
            "movq %%mm0, (%5, %%"REG_a")        \n\t"
130
            "pcmpeqw %%mm7, %%mm0               \n\t" // out==0 ? 0xFF : 0x00
131
            "movq (%4, %%"REG_a"), %%mm1        \n\t"
132
            "movq %%mm7, (%1, %%"REG_a")        \n\t" // 0
133
            "pandn %%mm1, %%mm0                 \n\t"
134
            PMAXW(%%mm0, %%mm3)
135
            "add $8, %%"REG_a"                  \n\t"
136
            " js 1b                             \n\t"
137
            PMAX(%%mm3, %%mm0)
138
            "movd %%mm3, %%"REG_a"              \n\t"
139
            "movzb %%al, %%"REG_a"              \n\t" // last_non_zero_p1
140
            : "+a" (last_non_zero_p1)
141
            : "r" (block+64), "r" (qmat), "r" (bias),
142
              "r" (inv_zigzag_direct16+64), "r" (temp_block+64)
143
        );
144
        // note the asm is split cuz gcc doesnt like that many operands ...
145
        asm volatile(
146
            "movd %1, %%mm1                     \n\t" // max_qcoeff
147
            SPREADW(%%mm1)
148
            "psubusw %%mm1, %%mm4               \n\t"
149
            "packuswb %%mm4, %%mm4              \n\t"
150
            "movd %%mm4, %0                     \n\t" // *overflow
151
        : "=g" (*overflow)
152
        : "g" (s->max_qcoeff)
153
        );
154
    }else{ // FMT_H263
155
        asm volatile(
156
            "movd %%"REG_a", %%mm3              \n\t" // last_non_zero_p1
157
            SPREADW(%%mm3)
158
            "pxor %%mm7, %%mm7                  \n\t" // 0
159
            "pxor %%mm4, %%mm4                  \n\t" // 0
160
            "mov $-128, %%"REG_a"               \n\t"
161
            ASMALIGN(4)
162
            "1:                                 \n\t"
163
            "pxor %%mm1, %%mm1                  \n\t" // 0
164
            "movq (%1, %%"REG_a"), %%mm0        \n\t" // block[i]
165
            "pcmpgtw %%mm0, %%mm1               \n\t" // block[i] <= 0 ? 0xFF : 0x00
166
            "pxor %%mm1, %%mm0                  \n\t"
167
            "psubw %%mm1, %%mm0                 \n\t" // ABS(block[i])
168
            "movq (%3, %%"REG_a"), %%mm6        \n\t" // bias[0]
169
            "paddusw %%mm6, %%mm0               \n\t" // ABS(block[i]) + bias[0]
170
            "movq (%2, %%"REG_a"), %%mm5        \n\t" // qmat[i]
171
            "pmulhw %%mm5, %%mm0                \n\t" // (ABS(block[i])*qmat[0] + bias[0]*qmat[0])>>16
172
            "por %%mm0, %%mm4                   \n\t"
173
            "pxor %%mm1, %%mm0                  \n\t"
174
            "psubw %%mm1, %%mm0                 \n\t" // out=((ABS(block[i])*qmat[0] - bias[0]*qmat[0])>>16)*sign(block[i])
175
            "movq %%mm0, (%5, %%"REG_a")        \n\t"
176
            "pcmpeqw %%mm7, %%mm0               \n\t" // out==0 ? 0xFF : 0x00
177
            "movq (%4, %%"REG_a"), %%mm1        \n\t"
178
            "movq %%mm7, (%1, %%"REG_a")        \n\t" // 0
179
            "pandn %%mm1, %%mm0                 \n\t"
180
            PMAXW(%%mm0, %%mm3)
181
            "add $8, %%"REG_a"                  \n\t"
182
            " js 1b                             \n\t"
183
            PMAX(%%mm3, %%mm0)
184
            "movd %%mm3, %%"REG_a"              \n\t"
185
            "movzb %%al, %%"REG_a"              \n\t" // last_non_zero_p1
186
            : "+a" (last_non_zero_p1)
187
            : "r" (block+64), "r" (qmat+64), "r" (bias+64),
188
              "r" (inv_zigzag_direct16+64), "r" (temp_block+64)
189
        );
190
        // note the asm is split cuz gcc doesnt like that many operands ...
191
        asm volatile(
192
            "movd %1, %%mm1                     \n\t" // max_qcoeff
193
            SPREADW(%%mm1)
194
            "psubusw %%mm1, %%mm4               \n\t"
195
            "packuswb %%mm4, %%mm4              \n\t"
196
            "movd %%mm4, %0                     \n\t" // *overflow
197
        : "=g" (*overflow)
198
        : "g" (s->max_qcoeff)
199
        );
200
    }
201

    
202
    if(s->mb_intra) block[0]= level;
203
    else            block[0]= temp_block[0];
204

    
205
    if(s->dsp.idct_permutation_type == FF_SIMPLE_IDCT_PERM){
206
        if(last_non_zero_p1 <= 1) goto end;
207
        block[0x08] = temp_block[0x01]; block[0x10] = temp_block[0x08];
208
        block[0x20] = temp_block[0x10];
209
        if(last_non_zero_p1 <= 4) goto end;
210
        block[0x18] = temp_block[0x09]; block[0x04] = temp_block[0x02];
211
        block[0x09] = temp_block[0x03];
212
        if(last_non_zero_p1 <= 7) goto end;
213
        block[0x14] = temp_block[0x0A]; block[0x28] = temp_block[0x11];
214
        block[0x12] = temp_block[0x18]; block[0x02] = temp_block[0x20];
215
        if(last_non_zero_p1 <= 11) goto end;
216
        block[0x1A] = temp_block[0x19]; block[0x24] = temp_block[0x12];
217
        block[0x19] = temp_block[0x0B]; block[0x01] = temp_block[0x04];
218
        block[0x0C] = temp_block[0x05];
219
        if(last_non_zero_p1 <= 16) goto end;
220
        block[0x11] = temp_block[0x0C]; block[0x29] = temp_block[0x13];
221
        block[0x16] = temp_block[0x1A]; block[0x0A] = temp_block[0x21];
222
        block[0x30] = temp_block[0x28]; block[0x22] = temp_block[0x30];
223
        block[0x38] = temp_block[0x29]; block[0x06] = temp_block[0x22];
224
        if(last_non_zero_p1 <= 24) goto end;
225
        block[0x1B] = temp_block[0x1B]; block[0x21] = temp_block[0x14];
226
        block[0x1C] = temp_block[0x0D]; block[0x05] = temp_block[0x06];
227
        block[0x0D] = temp_block[0x07]; block[0x15] = temp_block[0x0E];
228
        block[0x2C] = temp_block[0x15]; block[0x13] = temp_block[0x1C];
229
        if(last_non_zero_p1 <= 32) goto end;
230
        block[0x0B] = temp_block[0x23]; block[0x34] = temp_block[0x2A];
231
        block[0x2A] = temp_block[0x31]; block[0x32] = temp_block[0x38];
232
        block[0x3A] = temp_block[0x39]; block[0x26] = temp_block[0x32];
233
        block[0x39] = temp_block[0x2B]; block[0x03] = temp_block[0x24];
234
        if(last_non_zero_p1 <= 40) goto end;
235
        block[0x1E] = temp_block[0x1D]; block[0x25] = temp_block[0x16];
236
        block[0x1D] = temp_block[0x0F]; block[0x2D] = temp_block[0x17];
237
        block[0x17] = temp_block[0x1E]; block[0x0E] = temp_block[0x25];
238
        block[0x31] = temp_block[0x2C]; block[0x2B] = temp_block[0x33];
239
        if(last_non_zero_p1 <= 48) goto end;
240
        block[0x36] = temp_block[0x3A]; block[0x3B] = temp_block[0x3B];
241
        block[0x23] = temp_block[0x34]; block[0x3C] = temp_block[0x2D];
242
        block[0x07] = temp_block[0x26]; block[0x1F] = temp_block[0x1F];
243
        block[0x0F] = temp_block[0x27]; block[0x35] = temp_block[0x2E];
244
        if(last_non_zero_p1 <= 56) goto end;
245
        block[0x2E] = temp_block[0x35]; block[0x33] = temp_block[0x3C];
246
        block[0x3E] = temp_block[0x3D]; block[0x27] = temp_block[0x36];
247
        block[0x3D] = temp_block[0x2F]; block[0x2F] = temp_block[0x37];
248
        block[0x37] = temp_block[0x3E]; block[0x3F] = temp_block[0x3F];
249
    }else if(s->dsp.idct_permutation_type == FF_LIBMPEG2_IDCT_PERM){
250
        if(last_non_zero_p1 <= 1) goto end;
251
        block[0x04] = temp_block[0x01];
252
        block[0x08] = temp_block[0x08]; block[0x10] = temp_block[0x10];
253
        if(last_non_zero_p1 <= 4) goto end;
254
        block[0x0C] = temp_block[0x09]; block[0x01] = temp_block[0x02];
255
        block[0x05] = temp_block[0x03];
256
        if(last_non_zero_p1 <= 7) goto end;
257
        block[0x09] = temp_block[0x0A]; block[0x14] = temp_block[0x11];
258
        block[0x18] = temp_block[0x18]; block[0x20] = temp_block[0x20];
259
        if(last_non_zero_p1 <= 11) goto end;
260
        block[0x1C] = temp_block[0x19];
261
        block[0x11] = temp_block[0x12]; block[0x0D] = temp_block[0x0B];
262
        block[0x02] = temp_block[0x04]; block[0x06] = temp_block[0x05];
263
        if(last_non_zero_p1 <= 16) goto end;
264
        block[0x0A] = temp_block[0x0C]; block[0x15] = temp_block[0x13];
265
        block[0x19] = temp_block[0x1A]; block[0x24] = temp_block[0x21];
266
        block[0x28] = temp_block[0x28]; block[0x30] = temp_block[0x30];
267
        block[0x2C] = temp_block[0x29]; block[0x21] = temp_block[0x22];
268
        if(last_non_zero_p1 <= 24) goto end;
269
        block[0x1D] = temp_block[0x1B]; block[0x12] = temp_block[0x14];
270
        block[0x0E] = temp_block[0x0D]; block[0x03] = temp_block[0x06];
271
        block[0x07] = temp_block[0x07]; block[0x0B] = temp_block[0x0E];
272
        block[0x16] = temp_block[0x15]; block[0x1A] = temp_block[0x1C];
273
        if(last_non_zero_p1 <= 32) goto end;
274
        block[0x25] = temp_block[0x23]; block[0x29] = temp_block[0x2A];
275
        block[0x34] = temp_block[0x31]; block[0x38] = temp_block[0x38];
276
        block[0x3C] = temp_block[0x39]; block[0x31] = temp_block[0x32];
277
        block[0x2D] = temp_block[0x2B]; block[0x22] = temp_block[0x24];
278
        if(last_non_zero_p1 <= 40) goto end;
279
        block[0x1E] = temp_block[0x1D]; block[0x13] = temp_block[0x16];
280
        block[0x0F] = temp_block[0x0F]; block[0x17] = temp_block[0x17];
281
        block[0x1B] = temp_block[0x1E]; block[0x26] = temp_block[0x25];
282
        block[0x2A] = temp_block[0x2C]; block[0x35] = temp_block[0x33];
283
        if(last_non_zero_p1 <= 48) goto end;
284
        block[0x39] = temp_block[0x3A]; block[0x3D] = temp_block[0x3B];
285
        block[0x32] = temp_block[0x34]; block[0x2E] = temp_block[0x2D];
286
            block[0x23] = temp_block[0x26]; block[0x1F] = temp_block[0x1F];
287
        block[0x27] = temp_block[0x27]; block[0x2B] = temp_block[0x2E];
288
        if(last_non_zero_p1 <= 56) goto end;
289
        block[0x36] = temp_block[0x35]; block[0x3A] = temp_block[0x3C];
290
        block[0x3E] = temp_block[0x3D]; block[0x33] = temp_block[0x36];
291
        block[0x2F] = temp_block[0x2F]; block[0x37] = temp_block[0x37];
292
        block[0x3B] = temp_block[0x3E]; block[0x3F] = temp_block[0x3F];
293
    }else{
294
        if(last_non_zero_p1 <= 1) goto end;
295
        block[0x01] = temp_block[0x01];
296
        block[0x08] = temp_block[0x08]; block[0x10] = temp_block[0x10];
297
        if(last_non_zero_p1 <= 4) goto end;
298
        block[0x09] = temp_block[0x09]; block[0x02] = temp_block[0x02];
299
        block[0x03] = temp_block[0x03];
300
        if(last_non_zero_p1 <= 7) goto end;
301
        block[0x0A] = temp_block[0x0A]; block[0x11] = temp_block[0x11];
302
        block[0x18] = temp_block[0x18]; block[0x20] = temp_block[0x20];
303
        if(last_non_zero_p1 <= 11) goto end;
304
        block[0x19] = temp_block[0x19];
305
        block[0x12] = temp_block[0x12]; block[0x0B] = temp_block[0x0B];
306
        block[0x04] = temp_block[0x04]; block[0x05] = temp_block[0x05];
307
        if(last_non_zero_p1 <= 16) goto end;
308
        block[0x0C] = temp_block[0x0C]; block[0x13] = temp_block[0x13];
309
        block[0x1A] = temp_block[0x1A]; block[0x21] = temp_block[0x21];
310
        block[0x28] = temp_block[0x28]; block[0x30] = temp_block[0x30];
311
        block[0x29] = temp_block[0x29]; block[0x22] = temp_block[0x22];
312
        if(last_non_zero_p1 <= 24) goto end;
313
        block[0x1B] = temp_block[0x1B]; block[0x14] = temp_block[0x14];
314
        block[0x0D] = temp_block[0x0D]; block[0x06] = temp_block[0x06];
315
        block[0x07] = temp_block[0x07]; block[0x0E] = temp_block[0x0E];
316
        block[0x15] = temp_block[0x15]; block[0x1C] = temp_block[0x1C];
317
        if(last_non_zero_p1 <= 32) goto end;
318
        block[0x23] = temp_block[0x23]; block[0x2A] = temp_block[0x2A];
319
        block[0x31] = temp_block[0x31]; block[0x38] = temp_block[0x38];
320
        block[0x39] = temp_block[0x39]; block[0x32] = temp_block[0x32];
321
        block[0x2B] = temp_block[0x2B]; block[0x24] = temp_block[0x24];
322
        if(last_non_zero_p1 <= 40) goto end;
323
        block[0x1D] = temp_block[0x1D]; block[0x16] = temp_block[0x16];
324
        block[0x0F] = temp_block[0x0F]; block[0x17] = temp_block[0x17];
325
        block[0x1E] = temp_block[0x1E]; block[0x25] = temp_block[0x25];
326
        block[0x2C] = temp_block[0x2C]; block[0x33] = temp_block[0x33];
327
        if(last_non_zero_p1 <= 48) goto end;
328
        block[0x3A] = temp_block[0x3A]; block[0x3B] = temp_block[0x3B];
329
        block[0x34] = temp_block[0x34]; block[0x2D] = temp_block[0x2D];
330
        block[0x26] = temp_block[0x26]; block[0x1F] = temp_block[0x1F];
331
        block[0x27] = temp_block[0x27]; block[0x2E] = temp_block[0x2E];
332
        if(last_non_zero_p1 <= 56) goto end;
333
        block[0x35] = temp_block[0x35]; block[0x3C] = temp_block[0x3C];
334
        block[0x3D] = temp_block[0x3D]; block[0x36] = temp_block[0x36];
335
        block[0x2F] = temp_block[0x2F]; block[0x37] = temp_block[0x37];
336
        block[0x3E] = temp_block[0x3E]; block[0x3F] = temp_block[0x3F];
337
    }
338
    end:
339
/*
340
    for(i=0; i<last_non_zero_p1; i++)
341
    {
342
       int j= zigzag_direct_noperm[i];
343
       block[block_permute_op(j)]= temp_block[j];
344
    }
345
*/
346

    
347
    return last_non_zero_p1 - 1;
348
}