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ffmpeg / libavcodec / i386 / mpegvideo_mmx_template.c @ 68b51e58

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1
/*
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 * MPEG video MMX templates
3
 *
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 * Copyright (c) 2002 Michael Niedermayer <michaelni@gmx.at>
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 *
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 * This library is free software; you can redistribute it and/or
7
 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2 of the License, or (at your option) any later version.
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 *
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 * This library is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with this library; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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#undef SPREADW
21
#undef PMAXW
22
#ifdef HAVE_MMX2
23
#define SPREADW(a) "pshufw $0, " #a ", " #a " \n\t"
24
#define PMAXW(a,b) "pmaxsw " #a ", " #b "     \n\t"
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#define PMAX(a,b) \
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            "pshufw $0x0E," #a ", " #b "        \n\t"\
27
            PMAXW(b, a)\
28
            "pshufw $0x01," #a ", " #b "        \n\t"\
29
            PMAXW(b, a)
30
#else
31
#define SPREADW(a) \
32
        "punpcklwd " #a ", " #a " \n\t"\
33
        "punpcklwd " #a ", " #a " \n\t"
34
#define PMAXW(a,b) \
35
        "psubusw " #a ", " #b " \n\t"\
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        "paddw " #a ", " #b "   \n\t"
37
#define PMAX(a,b)  \
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            "movq " #a ", " #b "                \n\t"\
39
            "psrlq $32, " #a "                  \n\t"\
40
            PMAXW(b, a)\
41
            "movq " #a ", " #b "                \n\t"\
42
            "psrlq $16, " #a "                  \n\t"\
43
            PMAXW(b, a)
44

    
45
#endif
46

    
47
static int RENAME(dct_quantize)(MpegEncContext *s,
48
                            DCTELEM *block, int n,
49
                            int qscale, int *overflow)
50
{
51
    long last_non_zero_p1;
52
    int level=0, q; //=0 is cuz gcc says uninitalized ...
53
    const uint16_t *qmat, *bias;
54
    DECLARE_ALIGNED_8(int16_t, temp_block[64]);
55

    
56
    assert((7&(int)(&temp_block[0])) == 0); //did gcc align it correctly?
57

    
58
    //s->fdct (block);
59
    RENAMEl(ff_fdct) (block); //cant be anything else ...
60

    
61
    if(s->dct_error_sum)
62
        s->denoise_dct(s, block);
63

    
64
    if (s->mb_intra) {
65
        int dummy;
66
        if (n < 4)
67
            q = s->y_dc_scale;
68
        else
69
            q = s->c_dc_scale;
70
        /* note: block[0] is assumed to be positive */
71
        if (!s->h263_aic) {
72
#if 1
73
        asm volatile (
74
                "mul %%ecx                \n\t"
75
                : "=d" (level), "=a"(dummy)
76
                : "a" ((block[0]>>2) + q), "c" (inverse[q<<1])
77
        );
78
#else
79
        asm volatile (
80
                "xorl %%edx, %%edx        \n\t"
81
                "divw %%cx                \n\t"
82
                "movzwl %%ax, %%eax       \n\t"
83
                : "=a" (level)
84
                : "a" ((block[0]>>2) + q), "c" (q<<1)
85
                : "%edx"
86
        );
87
#endif
88
        } else
89
            /* For AIC we skip quant/dequant of INTRADC */
90
            level = (block[0] + 4)>>3;
91

    
92
        block[0]=0; //avoid fake overflow
93
//        temp_block[0] = (block[0] + (q >> 1)) / q;
94
        last_non_zero_p1 = 1;
95
        bias = s->q_intra_matrix16[qscale][1];
96
        qmat = s->q_intra_matrix16[qscale][0];
97
    } else {
98
        last_non_zero_p1 = 0;
99
        bias = s->q_inter_matrix16[qscale][1];
100
        qmat = s->q_inter_matrix16[qscale][0];
101
    }
102

    
103
    if((s->out_format == FMT_H263 || s->out_format == FMT_H261) && s->mpeg_quant==0){
104

    
105
        asm volatile(
106
            "movd %%"REG_a", %%mm3              \n\t" // last_non_zero_p1
107
            SPREADW(%%mm3)
108
            "pxor %%mm7, %%mm7                  \n\t" // 0
109
            "pxor %%mm4, %%mm4                  \n\t" // 0
110
            "movq (%2), %%mm5                   \n\t" // qmat[0]
111
            "pxor %%mm6, %%mm6                  \n\t"
112
            "psubw (%3), %%mm6                  \n\t" // -bias[0]
113
            "mov $-128, %%"REG_a"               \n\t"
114
            ".balign 16                         \n\t"
115
            "1:                                 \n\t"
116
            "pxor %%mm1, %%mm1                  \n\t" // 0
117
            "movq (%1, %%"REG_a"), %%mm0        \n\t" // block[i]
118
            "pcmpgtw %%mm0, %%mm1               \n\t" // block[i] <= 0 ? 0xFF : 0x00
119
            "pxor %%mm1, %%mm0                  \n\t"
120
            "psubw %%mm1, %%mm0                 \n\t" // ABS(block[i])
121
            "psubusw %%mm6, %%mm0               \n\t" // ABS(block[i]) + bias[0]
122
            "pmulhw %%mm5, %%mm0                \n\t" // (ABS(block[i])*qmat[0] - bias[0]*qmat[0])>>16
123
            "por %%mm0, %%mm4                   \n\t"
124
            "pxor %%mm1, %%mm0                  \n\t"
125
            "psubw %%mm1, %%mm0                 \n\t" // out=((ABS(block[i])*qmat[0] - bias[0]*qmat[0])>>16)*sign(block[i])
126
            "movq %%mm0, (%5, %%"REG_a")        \n\t"
127
            "pcmpeqw %%mm7, %%mm0               \n\t" // out==0 ? 0xFF : 0x00
128
            "movq (%4, %%"REG_a"), %%mm1        \n\t"
129
            "movq %%mm7, (%1, %%"REG_a")        \n\t" // 0
130
            "pandn %%mm1, %%mm0                 \n\t"
131
            PMAXW(%%mm0, %%mm3)
132
            "add $8, %%"REG_a"                  \n\t"
133
            " js 1b                             \n\t"
134
            PMAX(%%mm3, %%mm0)
135
            "movd %%mm3, %%"REG_a"              \n\t"
136
            "movzb %%al, %%"REG_a"              \n\t" // last_non_zero_p1
137
            : "+a" (last_non_zero_p1)
138
            : "r" (block+64), "r" (qmat), "r" (bias),
139
              "r" (inv_zigzag_direct16+64), "r" (temp_block+64)
140
        );
141
        // note the asm is split cuz gcc doesnt like that many operands ...
142
        asm volatile(
143
            "movd %1, %%mm1                     \n\t" // max_qcoeff
144
            SPREADW(%%mm1)
145
            "psubusw %%mm1, %%mm4               \n\t"
146
            "packuswb %%mm4, %%mm4              \n\t"
147
            "movd %%mm4, %0                     \n\t" // *overflow
148
        : "=g" (*overflow)
149
        : "g" (s->max_qcoeff)
150
        );
151
    }else{ // FMT_H263
152
        asm volatile(
153
            "movd %%"REG_a", %%mm3              \n\t" // last_non_zero_p1
154
            SPREADW(%%mm3)
155
            "pxor %%mm7, %%mm7                  \n\t" // 0
156
            "pxor %%mm4, %%mm4                  \n\t" // 0
157
            "mov $-128, %%"REG_a"               \n\t"
158
            ".balign 16                         \n\t"
159
            "1:                                 \n\t"
160
            "pxor %%mm1, %%mm1                  \n\t" // 0
161
            "movq (%1, %%"REG_a"), %%mm0        \n\t" // block[i]
162
            "pcmpgtw %%mm0, %%mm1               \n\t" // block[i] <= 0 ? 0xFF : 0x00
163
            "pxor %%mm1, %%mm0                  \n\t"
164
            "psubw %%mm1, %%mm0                 \n\t" // ABS(block[i])
165
            "movq (%3, %%"REG_a"), %%mm6        \n\t" // bias[0]
166
            "paddusw %%mm6, %%mm0               \n\t" // ABS(block[i]) + bias[0]
167
            "movq (%2, %%"REG_a"), %%mm5        \n\t" // qmat[i]
168
            "pmulhw %%mm5, %%mm0                \n\t" // (ABS(block[i])*qmat[0] + bias[0]*qmat[0])>>16
169
            "por %%mm0, %%mm4                   \n\t"
170
            "pxor %%mm1, %%mm0                  \n\t"
171
            "psubw %%mm1, %%mm0                 \n\t" // out=((ABS(block[i])*qmat[0] - bias[0]*qmat[0])>>16)*sign(block[i])
172
            "movq %%mm0, (%5, %%"REG_a")        \n\t"
173
            "pcmpeqw %%mm7, %%mm0               \n\t" // out==0 ? 0xFF : 0x00
174
            "movq (%4, %%"REG_a"), %%mm1        \n\t"
175
            "movq %%mm7, (%1, %%"REG_a")        \n\t" // 0
176
            "pandn %%mm1, %%mm0                 \n\t"
177
            PMAXW(%%mm0, %%mm3)
178
            "add $8, %%"REG_a"                  \n\t"
179
            " js 1b                             \n\t"
180
            PMAX(%%mm3, %%mm0)
181
            "movd %%mm3, %%"REG_a"              \n\t"
182
            "movzb %%al, %%"REG_a"              \n\t" // last_non_zero_p1
183
            : "+a" (last_non_zero_p1)
184
            : "r" (block+64), "r" (qmat+64), "r" (bias+64),
185
              "r" (inv_zigzag_direct16+64), "r" (temp_block+64)
186
        );
187
        // note the asm is split cuz gcc doesnt like that many operands ...
188
        asm volatile(
189
            "movd %1, %%mm1                     \n\t" // max_qcoeff
190
            SPREADW(%%mm1)
191
            "psubusw %%mm1, %%mm4               \n\t"
192
            "packuswb %%mm4, %%mm4              \n\t"
193
            "movd %%mm4, %0                     \n\t" // *overflow
194
        : "=g" (*overflow)
195
        : "g" (s->max_qcoeff)
196
        );
197
    }
198

    
199
    if(s->mb_intra) block[0]= level;
200
    else            block[0]= temp_block[0];
201

    
202
    if(s->dsp.idct_permutation_type == FF_SIMPLE_IDCT_PERM){
203
        if(last_non_zero_p1 <= 1) goto end;
204
        block[0x08] = temp_block[0x01]; block[0x10] = temp_block[0x08];
205
        block[0x20] = temp_block[0x10];
206
        if(last_non_zero_p1 <= 4) goto end;
207
        block[0x18] = temp_block[0x09]; block[0x04] = temp_block[0x02];
208
        block[0x09] = temp_block[0x03];
209
        if(last_non_zero_p1 <= 7) goto end;
210
        block[0x14] = temp_block[0x0A]; block[0x28] = temp_block[0x11];
211
        block[0x12] = temp_block[0x18]; block[0x02] = temp_block[0x20];
212
        if(last_non_zero_p1 <= 11) goto end;
213
        block[0x1A] = temp_block[0x19]; block[0x24] = temp_block[0x12];
214
        block[0x19] = temp_block[0x0B]; block[0x01] = temp_block[0x04];
215
        block[0x0C] = temp_block[0x05];
216
        if(last_non_zero_p1 <= 16) goto end;
217
        block[0x11] = temp_block[0x0C]; block[0x29] = temp_block[0x13];
218
        block[0x16] = temp_block[0x1A]; block[0x0A] = temp_block[0x21];
219
        block[0x30] = temp_block[0x28]; block[0x22] = temp_block[0x30];
220
        block[0x38] = temp_block[0x29]; block[0x06] = temp_block[0x22];
221
        if(last_non_zero_p1 <= 24) goto end;
222
        block[0x1B] = temp_block[0x1B]; block[0x21] = temp_block[0x14];
223
        block[0x1C] = temp_block[0x0D]; block[0x05] = temp_block[0x06];
224
        block[0x0D] = temp_block[0x07]; block[0x15] = temp_block[0x0E];
225
        block[0x2C] = temp_block[0x15]; block[0x13] = temp_block[0x1C];
226
        if(last_non_zero_p1 <= 32) goto end;
227
        block[0x0B] = temp_block[0x23]; block[0x34] = temp_block[0x2A];
228
        block[0x2A] = temp_block[0x31]; block[0x32] = temp_block[0x38];
229
        block[0x3A] = temp_block[0x39]; block[0x26] = temp_block[0x32];
230
        block[0x39] = temp_block[0x2B]; block[0x03] = temp_block[0x24];
231
        if(last_non_zero_p1 <= 40) goto end;
232
        block[0x1E] = temp_block[0x1D]; block[0x25] = temp_block[0x16];
233
        block[0x1D] = temp_block[0x0F]; block[0x2D] = temp_block[0x17];
234
        block[0x17] = temp_block[0x1E]; block[0x0E] = temp_block[0x25];
235
        block[0x31] = temp_block[0x2C]; block[0x2B] = temp_block[0x33];
236
        if(last_non_zero_p1 <= 48) goto end;
237
        block[0x36] = temp_block[0x3A]; block[0x3B] = temp_block[0x3B];
238
        block[0x23] = temp_block[0x34]; block[0x3C] = temp_block[0x2D];
239
        block[0x07] = temp_block[0x26]; block[0x1F] = temp_block[0x1F];
240
        block[0x0F] = temp_block[0x27]; block[0x35] = temp_block[0x2E];
241
        if(last_non_zero_p1 <= 56) goto end;
242
        block[0x2E] = temp_block[0x35]; block[0x33] = temp_block[0x3C];
243
        block[0x3E] = temp_block[0x3D]; block[0x27] = temp_block[0x36];
244
        block[0x3D] = temp_block[0x2F]; block[0x2F] = temp_block[0x37];
245
        block[0x37] = temp_block[0x3E]; block[0x3F] = temp_block[0x3F];
246
    }else if(s->dsp.idct_permutation_type == FF_LIBMPEG2_IDCT_PERM){
247
        if(last_non_zero_p1 <= 1) goto end;
248
        block[0x04] = temp_block[0x01];
249
        block[0x08] = temp_block[0x08]; block[0x10] = temp_block[0x10];
250
        if(last_non_zero_p1 <= 4) goto end;
251
        block[0x0C] = temp_block[0x09]; block[0x01] = temp_block[0x02];
252
        block[0x05] = temp_block[0x03];
253
        if(last_non_zero_p1 <= 7) goto end;
254
        block[0x09] = temp_block[0x0A]; block[0x14] = temp_block[0x11];
255
        block[0x18] = temp_block[0x18]; block[0x20] = temp_block[0x20];
256
        if(last_non_zero_p1 <= 11) goto end;
257
        block[0x1C] = temp_block[0x19];
258
        block[0x11] = temp_block[0x12]; block[0x0D] = temp_block[0x0B];
259
        block[0x02] = temp_block[0x04]; block[0x06] = temp_block[0x05];
260
        if(last_non_zero_p1 <= 16) goto end;
261
        block[0x0A] = temp_block[0x0C]; block[0x15] = temp_block[0x13];
262
        block[0x19] = temp_block[0x1A]; block[0x24] = temp_block[0x21];
263
        block[0x28] = temp_block[0x28]; block[0x30] = temp_block[0x30];
264
        block[0x2C] = temp_block[0x29]; block[0x21] = temp_block[0x22];
265
        if(last_non_zero_p1 <= 24) goto end;
266
        block[0x1D] = temp_block[0x1B]; block[0x12] = temp_block[0x14];
267
        block[0x0E] = temp_block[0x0D]; block[0x03] = temp_block[0x06];
268
        block[0x07] = temp_block[0x07]; block[0x0B] = temp_block[0x0E];
269
        block[0x16] = temp_block[0x15]; block[0x1A] = temp_block[0x1C];
270
        if(last_non_zero_p1 <= 32) goto end;
271
        block[0x25] = temp_block[0x23]; block[0x29] = temp_block[0x2A];
272
        block[0x34] = temp_block[0x31]; block[0x38] = temp_block[0x38];
273
        block[0x3C] = temp_block[0x39]; block[0x31] = temp_block[0x32];
274
        block[0x2D] = temp_block[0x2B]; block[0x22] = temp_block[0x24];
275
        if(last_non_zero_p1 <= 40) goto end;
276
        block[0x1E] = temp_block[0x1D]; block[0x13] = temp_block[0x16];
277
        block[0x0F] = temp_block[0x0F]; block[0x17] = temp_block[0x17];
278
        block[0x1B] = temp_block[0x1E]; block[0x26] = temp_block[0x25];
279
        block[0x2A] = temp_block[0x2C]; block[0x35] = temp_block[0x33];
280
        if(last_non_zero_p1 <= 48) goto end;
281
        block[0x39] = temp_block[0x3A]; block[0x3D] = temp_block[0x3B];
282
        block[0x32] = temp_block[0x34]; block[0x2E] = temp_block[0x2D];
283
            block[0x23] = temp_block[0x26]; block[0x1F] = temp_block[0x1F];
284
        block[0x27] = temp_block[0x27]; block[0x2B] = temp_block[0x2E];
285
        if(last_non_zero_p1 <= 56) goto end;
286
        block[0x36] = temp_block[0x35]; block[0x3A] = temp_block[0x3C];
287
        block[0x3E] = temp_block[0x3D]; block[0x33] = temp_block[0x36];
288
        block[0x2F] = temp_block[0x2F]; block[0x37] = temp_block[0x37];
289
        block[0x3B] = temp_block[0x3E]; block[0x3F] = temp_block[0x3F];
290
    }else{
291
        if(last_non_zero_p1 <= 1) goto end;
292
        block[0x01] = temp_block[0x01];
293
        block[0x08] = temp_block[0x08]; block[0x10] = temp_block[0x10];
294
        if(last_non_zero_p1 <= 4) goto end;
295
        block[0x09] = temp_block[0x09]; block[0x02] = temp_block[0x02];
296
        block[0x03] = temp_block[0x03];
297
        if(last_non_zero_p1 <= 7) goto end;
298
        block[0x0A] = temp_block[0x0A]; block[0x11] = temp_block[0x11];
299
        block[0x18] = temp_block[0x18]; block[0x20] = temp_block[0x20];
300
        if(last_non_zero_p1 <= 11) goto end;
301
        block[0x19] = temp_block[0x19];
302
        block[0x12] = temp_block[0x12]; block[0x0B] = temp_block[0x0B];
303
        block[0x04] = temp_block[0x04]; block[0x05] = temp_block[0x05];
304
        if(last_non_zero_p1 <= 16) goto end;
305
        block[0x0C] = temp_block[0x0C]; block[0x13] = temp_block[0x13];
306
        block[0x1A] = temp_block[0x1A]; block[0x21] = temp_block[0x21];
307
        block[0x28] = temp_block[0x28]; block[0x30] = temp_block[0x30];
308
        block[0x29] = temp_block[0x29]; block[0x22] = temp_block[0x22];
309
        if(last_non_zero_p1 <= 24) goto end;
310
        block[0x1B] = temp_block[0x1B]; block[0x14] = temp_block[0x14];
311
        block[0x0D] = temp_block[0x0D]; block[0x06] = temp_block[0x06];
312
        block[0x07] = temp_block[0x07]; block[0x0E] = temp_block[0x0E];
313
        block[0x15] = temp_block[0x15]; block[0x1C] = temp_block[0x1C];
314
        if(last_non_zero_p1 <= 32) goto end;
315
        block[0x23] = temp_block[0x23]; block[0x2A] = temp_block[0x2A];
316
        block[0x31] = temp_block[0x31]; block[0x38] = temp_block[0x38];
317
        block[0x39] = temp_block[0x39]; block[0x32] = temp_block[0x32];
318
        block[0x2B] = temp_block[0x2B]; block[0x24] = temp_block[0x24];
319
        if(last_non_zero_p1 <= 40) goto end;
320
        block[0x1D] = temp_block[0x1D]; block[0x16] = temp_block[0x16];
321
        block[0x0F] = temp_block[0x0F]; block[0x17] = temp_block[0x17];
322
        block[0x1E] = temp_block[0x1E]; block[0x25] = temp_block[0x25];
323
        block[0x2C] = temp_block[0x2C]; block[0x33] = temp_block[0x33];
324
        if(last_non_zero_p1 <= 48) goto end;
325
        block[0x3A] = temp_block[0x3A]; block[0x3B] = temp_block[0x3B];
326
        block[0x34] = temp_block[0x34]; block[0x2D] = temp_block[0x2D];
327
        block[0x26] = temp_block[0x26]; block[0x1F] = temp_block[0x1F];
328
        block[0x27] = temp_block[0x27]; block[0x2E] = temp_block[0x2E];
329
        if(last_non_zero_p1 <= 56) goto end;
330
        block[0x35] = temp_block[0x35]; block[0x3C] = temp_block[0x3C];
331
        block[0x3D] = temp_block[0x3D]; block[0x36] = temp_block[0x36];
332
        block[0x2F] = temp_block[0x2F]; block[0x37] = temp_block[0x37];
333
        block[0x3E] = temp_block[0x3E]; block[0x3F] = temp_block[0x3F];
334
    }
335
    end:
336
/*
337
    for(i=0; i<last_non_zero_p1; i++)
338
    {
339
       int j= zigzag_direct_noperm[i];
340
       block[block_permute_op(j)]= temp_block[j];
341
    }
342
*/
343

    
344
    return last_non_zero_p1 - 1;
345
}