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ffmpeg / libavcodec / x86 / mpegvideo_mmx_template.c @ 84dc2d8a

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/*
2
 * 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 file is part of FFmpeg.
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 *
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 * FFmpeg is free software; you can redistribute it and/or
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 * 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 2.1 of the License, or (at your option) any later version.
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 *
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 * FFmpeg 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 FFmpeg; 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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 */
22

    
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#undef MMREG_WIDTH
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#undef MM
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#undef MOVQ
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#undef SPREADW
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#undef PMAXW
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#undef PMAX
29
#undef SAVE_SIGN
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#undef RESTORE_SIGN
31

    
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#if HAVE_SSE2
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#define MMREG_WIDTH "16"
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#define MM "%%xmm"
35
#define MOVQ "movdqa"
36
#define SPREADW(a) \
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            "pshuflw $0, "a", "a"       \n\t"\
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            "punpcklwd "a", "a"         \n\t"
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#define PMAXW(a,b) "pmaxsw "a", "b"     \n\t"
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#define PMAX(a,b) \
41
            "movhlps "a", "b"           \n\t"\
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            PMAXW(b, a)\
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            "pshuflw $0x0E, "a", "b"    \n\t"\
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            PMAXW(b, a)\
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            "pshuflw $0x01, "a", "b"    \n\t"\
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            PMAXW(b, a)
47
#else
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#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"
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#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"\
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            PMAXW(b, a)\
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            "pshufw $0x01, "a", "b"     \n\t"\
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            PMAXW(b, a)
59
#else
60
#define SPREADW(a) \
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            "punpcklwd "a", "a"         \n\t"\
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            "punpcklwd "a", "a"         \n\t"
63
#define PMAXW(a,b) \
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            "psubusw "a", "b"           \n\t"\
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            "paddw "a", "b"             \n\t"
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#define PMAX(a,b)  \
67
            "movq "a", "b"              \n\t"\
68
            "psrlq $32, "a"             \n\t"\
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            PMAXW(b, a)\
70
            "movq "a", "b"              \n\t"\
71
            "psrlq $16, "a"             \n\t"\
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            PMAXW(b, a)
73

    
74
#endif
75
#endif
76

    
77
#if HAVE_SSSE3
78
#define SAVE_SIGN(a,b) \
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            "movdqa "b", "a"            \n\t"\
80
            "pabsw  "b", "b"            \n\t"
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#define RESTORE_SIGN(a,b) \
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            "psignw "a", "b"            \n\t"
83
#else
84
#define SAVE_SIGN(a,b) \
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            "pxor "a", "a"              \n\t"\
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            "pcmpgtw "b", "a"           \n\t" /* block[i] <= 0 ? 0xFF : 0x00 */\
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            "pxor "a", "b"              \n\t"\
88
            "psubw "a", "b"             \n\t" /* ABS(block[i]) */
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#define RESTORE_SIGN(a,b) \
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            "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
            ASMALIGN(4)
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
        );
184
    }else{ // FMT_H263
185
        __asm__ volatile(
186
            "movd %%"REG_a", "MM"3              \n\t" // last_non_zero_p1
187
            SPREADW(MM"3")
188
            "pxor "MM"7, "MM"7                  \n\t" // 0
189
            "pxor "MM"4, "MM"4                  \n\t" // 0
190
            "mov $-128, %%"REG_a"               \n\t"
191
            ASMALIGN(4)
192
            "1:                                 \n\t"
193
            MOVQ" (%1, %%"REG_a"), "MM"0        \n\t" // block[i]
194
            SAVE_SIGN(MM"1", MM"0")                   // ABS(block[i])
195
            MOVQ" (%3, %%"REG_a"), "MM"6        \n\t" // bias[0]
196
            "paddusw "MM"6, "MM"0               \n\t" // ABS(block[i]) + bias[0]
197
            MOVQ" (%2, %%"REG_a"), "MM"5        \n\t" // qmat[i]
198
            "pmulhw "MM"5, "MM"0                \n\t" // (ABS(block[i])*qmat[0] + bias[0]*qmat[0])>>16
199
            "por "MM"0, "MM"4                   \n\t"
200
            RESTORE_SIGN(MM"1", MM"0")                // out=((ABS(block[i])*qmat[0] - bias[0]*qmat[0])>>16)*sign(block[i])
201
            MOVQ" "MM"0, (%5, %%"REG_a")        \n\t"
202
            "pcmpeqw "MM"7, "MM"0               \n\t" // out==0 ? 0xFF : 0x00
203
            MOVQ" (%4, %%"REG_a"), "MM"1        \n\t"
204
            MOVQ" "MM"7, (%1, %%"REG_a")        \n\t" // 0
205
            "pandn "MM"1, "MM"0                 \n\t"
206
            PMAXW(MM"0", MM"3")
207
            "add $"MMREG_WIDTH", %%"REG_a"      \n\t"
208
            " js 1b                             \n\t"
209
            PMAX(MM"3", MM"0")
210
            "movd "MM"3, %%"REG_a"              \n\t"
211
            "movzb %%al, %%"REG_a"              \n\t" // last_non_zero_p1
212
            : "+a" (last_non_zero_p1)
213
            : "r" (block+64), "r" (qmat+64), "r" (bias+64),
214
              "r" (inv_zigzag_direct16+64), "r" (temp_block+64)
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 HAVE_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->dsp.idct_permutation_type == FF_SIMPLE_IDCT_PERM){
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 if(s->dsp.idct_permutation_type == FF_LIBMPEG2_IDCT_PERM){
278
        if(last_non_zero_p1 <= 1) goto end;
279
        block[0x04] = 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[0x0C] = temp_block[0x09]; block[0x01] = temp_block[0x02];
283
        block[0x05] = temp_block[0x03];
284
        if(last_non_zero_p1 <= 7) goto end;
285
        block[0x09] = temp_block[0x0A]; block[0x14] = 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[0x1C] = temp_block[0x19];
289
        block[0x11] = temp_block[0x12]; block[0x0D] = temp_block[0x0B];
290
        block[0x02] = temp_block[0x04]; block[0x06] = temp_block[0x05];
291
        if(last_non_zero_p1 <= 16) goto end;
292
        block[0x0A] = temp_block[0x0C]; block[0x15] = temp_block[0x13];
293
        block[0x19] = temp_block[0x1A]; block[0x24] = temp_block[0x21];
294
        block[0x28] = temp_block[0x28]; block[0x30] = temp_block[0x30];
295
        block[0x2C] = temp_block[0x29]; block[0x21] = temp_block[0x22];
296
        if(last_non_zero_p1 <= 24) goto end;
297
        block[0x1D] = temp_block[0x1B]; block[0x12] = temp_block[0x14];
298
        block[0x0E] = temp_block[0x0D]; block[0x03] = temp_block[0x06];
299
        block[0x07] = temp_block[0x07]; block[0x0B] = temp_block[0x0E];
300
        block[0x16] = temp_block[0x15]; block[0x1A] = temp_block[0x1C];
301
        if(last_non_zero_p1 <= 32) goto end;
302
        block[0x25] = temp_block[0x23]; block[0x29] = temp_block[0x2A];
303
        block[0x34] = temp_block[0x31]; block[0x38] = temp_block[0x38];
304
        block[0x3C] = temp_block[0x39]; block[0x31] = temp_block[0x32];
305
        block[0x2D] = temp_block[0x2B]; block[0x22] = temp_block[0x24];
306
        if(last_non_zero_p1 <= 40) goto end;
307
        block[0x1E] = temp_block[0x1D]; block[0x13] = temp_block[0x16];
308
        block[0x0F] = temp_block[0x0F]; block[0x17] = temp_block[0x17];
309
        block[0x1B] = temp_block[0x1E]; block[0x26] = temp_block[0x25];
310
        block[0x2A] = temp_block[0x2C]; block[0x35] = temp_block[0x33];
311
        if(last_non_zero_p1 <= 48) goto end;
312
        block[0x39] = temp_block[0x3A]; block[0x3D] = temp_block[0x3B];
313
        block[0x32] = temp_block[0x34]; block[0x2E] = temp_block[0x2D];
314
            block[0x23] = temp_block[0x26]; block[0x1F] = temp_block[0x1F];
315
        block[0x27] = temp_block[0x27]; block[0x2B] = temp_block[0x2E];
316
        if(last_non_zero_p1 <= 56) goto end;
317
        block[0x36] = temp_block[0x35]; block[0x3A] = temp_block[0x3C];
318
        block[0x3E] = temp_block[0x3D]; block[0x33] = temp_block[0x36];
319
        block[0x2F] = temp_block[0x2F]; block[0x37] = temp_block[0x37];
320
        block[0x3B] = temp_block[0x3E]; block[0x3F] = temp_block[0x3F];
321
    }else{
322
        if(last_non_zero_p1 <= 1) goto end;
323
        block[0x01] = temp_block[0x01];
324
        block[0x08] = temp_block[0x08]; block[0x10] = temp_block[0x10];
325
        if(last_non_zero_p1 <= 4) goto end;
326
        block[0x09] = temp_block[0x09]; block[0x02] = temp_block[0x02];
327
        block[0x03] = temp_block[0x03];
328
        if(last_non_zero_p1 <= 7) goto end;
329
        block[0x0A] = temp_block[0x0A]; block[0x11] = temp_block[0x11];
330
        block[0x18] = temp_block[0x18]; block[0x20] = temp_block[0x20];
331
        if(last_non_zero_p1 <= 11) goto end;
332
        block[0x19] = temp_block[0x19];
333
        block[0x12] = temp_block[0x12]; block[0x0B] = temp_block[0x0B];
334
        block[0x04] = temp_block[0x04]; block[0x05] = temp_block[0x05];
335
        if(last_non_zero_p1 <= 16) goto end;
336
        block[0x0C] = temp_block[0x0C]; block[0x13] = temp_block[0x13];
337
        block[0x1A] = temp_block[0x1A]; block[0x21] = temp_block[0x21];
338
        block[0x28] = temp_block[0x28]; block[0x30] = temp_block[0x30];
339
        block[0x29] = temp_block[0x29]; block[0x22] = temp_block[0x22];
340
        if(last_non_zero_p1 <= 24) goto end;
341
        block[0x1B] = temp_block[0x1B]; block[0x14] = temp_block[0x14];
342
        block[0x0D] = temp_block[0x0D]; block[0x06] = temp_block[0x06];
343
        block[0x07] = temp_block[0x07]; block[0x0E] = temp_block[0x0E];
344
        block[0x15] = temp_block[0x15]; block[0x1C] = temp_block[0x1C];
345
        if(last_non_zero_p1 <= 32) goto end;
346
        block[0x23] = temp_block[0x23]; block[0x2A] = temp_block[0x2A];
347
        block[0x31] = temp_block[0x31]; block[0x38] = temp_block[0x38];
348
        block[0x39] = temp_block[0x39]; block[0x32] = temp_block[0x32];
349
        block[0x2B] = temp_block[0x2B]; block[0x24] = temp_block[0x24];
350
        if(last_non_zero_p1 <= 40) goto end;
351
        block[0x1D] = temp_block[0x1D]; block[0x16] = temp_block[0x16];
352
        block[0x0F] = temp_block[0x0F]; block[0x17] = temp_block[0x17];
353
        block[0x1E] = temp_block[0x1E]; block[0x25] = temp_block[0x25];
354
        block[0x2C] = temp_block[0x2C]; block[0x33] = temp_block[0x33];
355
        if(last_non_zero_p1 <= 48) goto end;
356
        block[0x3A] = temp_block[0x3A]; block[0x3B] = temp_block[0x3B];
357
        block[0x34] = temp_block[0x34]; block[0x2D] = temp_block[0x2D];
358
        block[0x26] = temp_block[0x26]; block[0x1F] = temp_block[0x1F];
359
        block[0x27] = temp_block[0x27]; block[0x2E] = temp_block[0x2E];
360
        if(last_non_zero_p1 <= 56) goto end;
361
        block[0x35] = temp_block[0x35]; block[0x3C] = temp_block[0x3C];
362
        block[0x3D] = temp_block[0x3D]; block[0x36] = temp_block[0x36];
363
        block[0x2F] = temp_block[0x2F]; block[0x37] = temp_block[0x37];
364
        block[0x3E] = temp_block[0x3E]; block[0x3F] = temp_block[0x3F];
365
    }
366
    end:
367
/*
368
    for(i=0; i<last_non_zero_p1; i++)
369
    {
370
       int j= zigzag_direct_noperm[i];
371
       block[block_permute_op(j)]= temp_block[j];
372
    }
373
*/
374

    
375
    return last_non_zero_p1 - 1;
376
}