GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavcodec/x86/mpegvideoenc_template.c Lines: 0 215 0.0 %
Date: 2021-04-18 10:33:33 Branches: 0 0 - %

Line Branch Exec Source
1
/*
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 * MPEG video MMX templates
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 *
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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
9
 * 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
23
#include <stdint.h>
24
25
#include "libavutil/internal.h"
26
#include "libavutil/mem_internal.h"
27
#include "libavutil/x86/asm.h"
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#include "libavcodec/mpegutils.h"
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#include "libavcodec/mpegvideo.h"
30
#include "fdct.h"
31
32
#undef MMREG_WIDTH
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#undef MM
34
#undef MOVQ
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#undef SPREADW
36
#undef PMAXW
37
#undef PMAX
38
#undef SAVE_SIGN
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#undef RESTORE_SIGN
40
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#if COMPILE_TEMPLATE_SSE2
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#define MMREG_WIDTH "16"
43
#define MM "%%xmm"
44
#define MOVQ "movdqa"
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#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) \
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            "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)
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#else
57
#define MMREG_WIDTH "8"
58
#define MM "%%mm"
59
#define MOVQ "movq"
60
#if COMPILE_TEMPLATE_MMXEXT
61
#define SPREADW(a) "pshufw $0, "a", "a" \n\t"
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#define PMAXW(a,b) "pmaxsw "a", "b"     \n\t"
63
#define PMAX(a,b) \
64
            "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)
68
#else
69
#define SPREADW(a) \
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            "punpcklwd "a", "a"         \n\t"\
71
            "punpcklwd "a", "a"         \n\t"
72
#define PMAXW(a,b) \
73
            "psubusw "a", "b"           \n\t"\
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            "paddw "a", "b"             \n\t"
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#define PMAX(a,b)  \
76
            "movq "a", "b"              \n\t"\
77
            "psrlq $32, "a"             \n\t"\
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            PMAXW(b, a)\
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            "movq "a", "b"              \n\t"\
80
            "psrlq $16, "a"             \n\t"\
81
            PMAXW(b, a)
82
83
#endif
84
#endif
85
86
#if COMPILE_TEMPLATE_SSSE3
87
#define SAVE_SIGN(a,b) \
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            "movdqa "b", "a"            \n\t"\
89
            "pabsw  "b", "b"            \n\t"
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#define RESTORE_SIGN(a,b) \
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            "psignw "a", "b"            \n\t"
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#else
93
#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"\
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            "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"\
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            "psubw "a", "b"             \n\t" // out=((ABS(block[i])*qmat[0] - bias[0]*qmat[0])>>16)*sign(block[i])
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#endif
102
103
static int RENAME(dct_quantize)(MpegEncContext *s,
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                            int16_t *block, int n,
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                            int qscale, int *overflow)
106
{
107
    x86_reg last_non_zero_p1;
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    int level=0, q; //=0 is because gcc says uninitialized ...
109
    const uint16_t *qmat, *bias;
110
    LOCAL_ALIGNED_16(int16_t, temp_block, [64]);
111
112
    av_assert2((7&(int)(&temp_block[0])) == 0); //did gcc align it correctly?
113
114
    //s->fdct (block);
115
    RENAME_FDCT(ff_fdct)(block); // cannot be anything else ...
116
117
    if(s->dct_error_sum)
118
        s->denoise_dct(s, block);
119
120
    if (s->mb_intra) {
121
        int dummy;
122
        if (n < 4){
123
            q = s->y_dc_scale;
124
            bias = s->q_intra_matrix16[qscale][1];
125
            qmat = s->q_intra_matrix16[qscale][0];
126
        }else{
127
            q = s->c_dc_scale;
128
            bias = s->q_chroma_intra_matrix16[qscale][1];
129
            qmat = s->q_chroma_intra_matrix16[qscale][0];
130
        }
131
        /* note: block[0] is assumed to be positive */
132
        if (!s->h263_aic) {
133
        __asm__ volatile (
134
                "mul %%ecx                \n\t"
135
                : "=d" (level), "=a"(dummy)
136
                : "a" ((block[0]>>2) + q), "c" (ff_inverse[q<<1])
137
        );
138
        } else
139
            /* For AIC we skip quant/dequant of INTRADC */
140
            level = (block[0] + 4)>>3;
141
142
        block[0]=0; //avoid fake overflow
143
//        temp_block[0] = (block[0] + (q >> 1)) / q;
144
        last_non_zero_p1 = 1;
145
    } else {
146
        last_non_zero_p1 = 0;
147
        bias = s->q_inter_matrix16[qscale][1];
148
        qmat = s->q_inter_matrix16[qscale][0];
149
    }
150
151
    if((s->out_format == FMT_H263 || s->out_format == FMT_H261) && s->mpeg_quant==0){
152
153
        __asm__ volatile(
154
            "movd %%"FF_REG_a", "MM"3           \n\t" // last_non_zero_p1
155
            SPREADW(MM"3")
156
            "pxor "MM"7, "MM"7                  \n\t" // 0
157
            "pxor "MM"4, "MM"4                  \n\t" // 0
158
            MOVQ" (%2), "MM"5                   \n\t" // qmat[0]
159
            "pxor "MM"6, "MM"6                  \n\t"
160
            "psubw (%3), "MM"6                  \n\t" // -bias[0]
161
            "mov $-128, %%"FF_REG_a"            \n\t"
162
            ".p2align 4                         \n\t"
163
            "1:                                 \n\t"
164
            MOVQ" (%1, %%"FF_REG_a"), "MM"0     \n\t" // block[i]
165
            SAVE_SIGN(MM"1", MM"0")                   // ABS(block[i])
166
            "psubusw "MM"6, "MM"0               \n\t" // ABS(block[i]) + bias[0]
167
            "pmulhw "MM"5, "MM"0                \n\t" // (ABS(block[i])*qmat[0] - bias[0]*qmat[0])>>16
168
            "por "MM"0, "MM"4                   \n\t"
169
            RESTORE_SIGN(MM"1", MM"0")                // out=((ABS(block[i])*qmat[0] - bias[0]*qmat[0])>>16)*sign(block[i])
170
            MOVQ" "MM"0, (%5, %%"FF_REG_a")     \n\t"
171
            "pcmpeqw "MM"7, "MM"0               \n\t" // out==0 ? 0xFF : 0x00
172
            MOVQ" (%4, %%"FF_REG_a"), "MM"1     \n\t"
173
            MOVQ" "MM"7, (%1, %%"FF_REG_a")     \n\t" // 0
174
            "pandn "MM"1, "MM"0                 \n\t"
175
            PMAXW(MM"0", MM"3")
176
            "add $"MMREG_WIDTH", %%"FF_REG_a"   \n\t"
177
            " js 1b                             \n\t"
178
            PMAX(MM"3", MM"0")
179
            "movd "MM"3, %%"FF_REG_a"           \n\t"
180
            "movzbl %%al, %%eax                 \n\t" // last_non_zero_p1
181
            : "+a" (last_non_zero_p1)
182
            : "r" (block+64), "r" (qmat), "r" (bias),
183
              "r" (inv_zigzag_direct16 + 64), "r" (temp_block + 64)
184
              XMM_CLOBBERS_ONLY("%xmm0", "%xmm1", "%xmm2", "%xmm3",
185
                                "%xmm4", "%xmm5", "%xmm6", "%xmm7")
186
        );
187
    }else{ // FMT_H263
188
        __asm__ volatile(
189
            "movd %%"FF_REG_a", "MM"3           \n\t" // last_non_zero_p1
190
            SPREADW(MM"3")
191
            "pxor "MM"7, "MM"7                  \n\t" // 0
192
            "pxor "MM"4, "MM"4                  \n\t" // 0
193
            "mov $-128, %%"FF_REG_a"            \n\t"
194
            ".p2align 4                         \n\t"
195
            "1:                                 \n\t"
196
            MOVQ" (%1, %%"FF_REG_a"), "MM"0     \n\t" // block[i]
197
            SAVE_SIGN(MM"1", MM"0")                   // ABS(block[i])
198
            MOVQ" (%3, %%"FF_REG_a"), "MM"6     \n\t" // bias[0]
199
            "paddusw "MM"6, "MM"0               \n\t" // ABS(block[i]) + bias[0]
200
            MOVQ" (%2, %%"FF_REG_a"), "MM"5     \n\t" // qmat[i]
201
            "pmulhw "MM"5, "MM"0                \n\t" // (ABS(block[i])*qmat[0] + bias[0]*qmat[0])>>16
202
            "por "MM"0, "MM"4                   \n\t"
203
            RESTORE_SIGN(MM"1", MM"0")                // out=((ABS(block[i])*qmat[0] - bias[0]*qmat[0])>>16)*sign(block[i])
204
            MOVQ" "MM"0, (%5, %%"FF_REG_a")     \n\t"
205
            "pcmpeqw "MM"7, "MM"0               \n\t" // out==0 ? 0xFF : 0x00
206
            MOVQ" (%4, %%"FF_REG_a"), "MM"1     \n\t"
207
            MOVQ" "MM"7, (%1, %%"FF_REG_a")     \n\t" // 0
208
            "pandn "MM"1, "MM"0                 \n\t"
209
            PMAXW(MM"0", MM"3")
210
            "add $"MMREG_WIDTH", %%"FF_REG_a"   \n\t"
211
            " js 1b                             \n\t"
212
            PMAX(MM"3", MM"0")
213
            "movd "MM"3, %%"FF_REG_a"           \n\t"
214
            "movzbl %%al, %%eax                 \n\t" // last_non_zero_p1
215
            : "+a" (last_non_zero_p1)
216
            : "r" (block+64), "r" (qmat+64), "r" (bias+64),
217
              "r" (inv_zigzag_direct16 + 64), "r" (temp_block + 64)
218
              XMM_CLOBBERS_ONLY("%xmm0", "%xmm1", "%xmm2", "%xmm3",
219
                                "%xmm4", "%xmm5", "%xmm6", "%xmm7")
220
        );
221
    }
222
    __asm__ volatile(
223
        "movd %1, "MM"1                     \n\t" // max_qcoeff
224
        SPREADW(MM"1")
225
        "psubusw "MM"1, "MM"4               \n\t"
226
        "packuswb "MM"4, "MM"4              \n\t"
227
#if COMPILE_TEMPLATE_SSE2
228
        "packsswb "MM"4, "MM"4              \n\t"
229
#endif
230
        "movd "MM"4, %0                     \n\t" // *overflow
231
        : "=g" (*overflow)
232
        : "g" (s->max_qcoeff)
233
    );
234
235
    if(s->mb_intra) block[0]= level;
236
    else            block[0]= temp_block[0];
237
238
    if (s->idsp.perm_type == FF_IDCT_PERM_SIMPLE) {
239
        if(last_non_zero_p1 <= 1) goto end;
240
        block[0x08] = temp_block[0x01]; block[0x10] = temp_block[0x08];
241
        block[0x20] = temp_block[0x10];
242
        if(last_non_zero_p1 <= 4) goto end;
243
        block[0x18] = temp_block[0x09]; block[0x04] = temp_block[0x02];
244
        block[0x09] = temp_block[0x03];
245
        if(last_non_zero_p1 <= 7) goto end;
246
        block[0x14] = temp_block[0x0A]; block[0x28] = temp_block[0x11];
247
        block[0x12] = temp_block[0x18]; block[0x02] = temp_block[0x20];
248
        if(last_non_zero_p1 <= 11) goto end;
249
        block[0x1A] = temp_block[0x19]; block[0x24] = temp_block[0x12];
250
        block[0x19] = temp_block[0x0B]; block[0x01] = temp_block[0x04];
251
        block[0x0C] = temp_block[0x05];
252
        if(last_non_zero_p1 <= 16) goto end;
253
        block[0x11] = temp_block[0x0C]; block[0x29] = temp_block[0x13];
254
        block[0x16] = temp_block[0x1A]; block[0x0A] = temp_block[0x21];
255
        block[0x30] = temp_block[0x28]; block[0x22] = temp_block[0x30];
256
        block[0x38] = temp_block[0x29]; block[0x06] = temp_block[0x22];
257
        if(last_non_zero_p1 <= 24) goto end;
258
        block[0x1B] = temp_block[0x1B]; block[0x21] = temp_block[0x14];
259
        block[0x1C] = temp_block[0x0D]; block[0x05] = temp_block[0x06];
260
        block[0x0D] = temp_block[0x07]; block[0x15] = temp_block[0x0E];
261
        block[0x2C] = temp_block[0x15]; block[0x13] = temp_block[0x1C];
262
        if(last_non_zero_p1 <= 32) goto end;
263
        block[0x0B] = temp_block[0x23]; block[0x34] = temp_block[0x2A];
264
        block[0x2A] = temp_block[0x31]; block[0x32] = temp_block[0x38];
265
        block[0x3A] = temp_block[0x39]; block[0x26] = temp_block[0x32];
266
        block[0x39] = temp_block[0x2B]; block[0x03] = temp_block[0x24];
267
        if(last_non_zero_p1 <= 40) goto end;
268
        block[0x1E] = temp_block[0x1D]; block[0x25] = temp_block[0x16];
269
        block[0x1D] = temp_block[0x0F]; block[0x2D] = temp_block[0x17];
270
        block[0x17] = temp_block[0x1E]; block[0x0E] = temp_block[0x25];
271
        block[0x31] = temp_block[0x2C]; block[0x2B] = temp_block[0x33];
272
        if(last_non_zero_p1 <= 48) goto end;
273
        block[0x36] = temp_block[0x3A]; block[0x3B] = temp_block[0x3B];
274
        block[0x23] = temp_block[0x34]; block[0x3C] = temp_block[0x2D];
275
        block[0x07] = temp_block[0x26]; block[0x1F] = temp_block[0x1F];
276
        block[0x0F] = temp_block[0x27]; block[0x35] = temp_block[0x2E];
277
        if(last_non_zero_p1 <= 56) goto end;
278
        block[0x2E] = temp_block[0x35]; block[0x33] = temp_block[0x3C];
279
        block[0x3E] = temp_block[0x3D]; block[0x27] = temp_block[0x36];
280
        block[0x3D] = temp_block[0x2F]; block[0x2F] = temp_block[0x37];
281
        block[0x37] = temp_block[0x3E]; block[0x3F] = temp_block[0x3F];
282
    }else if(s->idsp.perm_type == FF_IDCT_PERM_LIBMPEG2){
283
        if(last_non_zero_p1 <= 1) goto end;
284
        block[0x04] = temp_block[0x01];
285
        block[0x08] = temp_block[0x08]; block[0x10] = temp_block[0x10];
286
        if(last_non_zero_p1 <= 4) goto end;
287
        block[0x0C] = temp_block[0x09]; block[0x01] = temp_block[0x02];
288
        block[0x05] = temp_block[0x03];
289
        if(last_non_zero_p1 <= 7) goto end;
290
        block[0x09] = temp_block[0x0A]; block[0x14] = temp_block[0x11];
291
        block[0x18] = temp_block[0x18]; block[0x20] = temp_block[0x20];
292
        if(last_non_zero_p1 <= 11) goto end;
293
        block[0x1C] = temp_block[0x19];
294
        block[0x11] = temp_block[0x12]; block[0x0D] = temp_block[0x0B];
295
        block[0x02] = temp_block[0x04]; block[0x06] = temp_block[0x05];
296
        if(last_non_zero_p1 <= 16) goto end;
297
        block[0x0A] = temp_block[0x0C]; block[0x15] = temp_block[0x13];
298
        block[0x19] = temp_block[0x1A]; block[0x24] = temp_block[0x21];
299
        block[0x28] = temp_block[0x28]; block[0x30] = temp_block[0x30];
300
        block[0x2C] = temp_block[0x29]; block[0x21] = temp_block[0x22];
301
        if(last_non_zero_p1 <= 24) goto end;
302
        block[0x1D] = temp_block[0x1B]; block[0x12] = temp_block[0x14];
303
        block[0x0E] = temp_block[0x0D]; block[0x03] = temp_block[0x06];
304
        block[0x07] = temp_block[0x07]; block[0x0B] = temp_block[0x0E];
305
        block[0x16] = temp_block[0x15]; block[0x1A] = temp_block[0x1C];
306
        if(last_non_zero_p1 <= 32) goto end;
307
        block[0x25] = temp_block[0x23]; block[0x29] = temp_block[0x2A];
308
        block[0x34] = temp_block[0x31]; block[0x38] = temp_block[0x38];
309
        block[0x3C] = temp_block[0x39]; block[0x31] = temp_block[0x32];
310
        block[0x2D] = temp_block[0x2B]; block[0x22] = temp_block[0x24];
311
        if(last_non_zero_p1 <= 40) goto end;
312
        block[0x1E] = temp_block[0x1D]; block[0x13] = temp_block[0x16];
313
        block[0x0F] = temp_block[0x0F]; block[0x17] = temp_block[0x17];
314
        block[0x1B] = temp_block[0x1E]; block[0x26] = temp_block[0x25];
315
        block[0x2A] = temp_block[0x2C]; block[0x35] = temp_block[0x33];
316
        if(last_non_zero_p1 <= 48) goto end;
317
        block[0x39] = temp_block[0x3A]; block[0x3D] = temp_block[0x3B];
318
        block[0x32] = temp_block[0x34]; block[0x2E] = temp_block[0x2D];
319
            block[0x23] = temp_block[0x26]; block[0x1F] = temp_block[0x1F];
320
        block[0x27] = temp_block[0x27]; block[0x2B] = temp_block[0x2E];
321
        if(last_non_zero_p1 <= 56) goto end;
322
        block[0x36] = temp_block[0x35]; block[0x3A] = temp_block[0x3C];
323
        block[0x3E] = temp_block[0x3D]; block[0x33] = temp_block[0x36];
324
        block[0x2F] = temp_block[0x2F]; block[0x37] = temp_block[0x37];
325
        block[0x3B] = temp_block[0x3E]; block[0x3F] = temp_block[0x3F];
326
    } else if (s->idsp.perm_type == FF_IDCT_PERM_NONE) {
327
        if(last_non_zero_p1 <= 1) goto end;
328
        block[0x01] = temp_block[0x01];
329
        block[0x08] = temp_block[0x08]; block[0x10] = temp_block[0x10];
330
        if(last_non_zero_p1 <= 4) goto end;
331
        block[0x09] = temp_block[0x09]; block[0x02] = temp_block[0x02];
332
        block[0x03] = temp_block[0x03];
333
        if(last_non_zero_p1 <= 7) goto end;
334
        block[0x0A] = temp_block[0x0A]; block[0x11] = temp_block[0x11];
335
        block[0x18] = temp_block[0x18]; block[0x20] = temp_block[0x20];
336
        if(last_non_zero_p1 <= 11) goto end;
337
        block[0x19] = temp_block[0x19];
338
        block[0x12] = temp_block[0x12]; block[0x0B] = temp_block[0x0B];
339
        block[0x04] = temp_block[0x04]; block[0x05] = temp_block[0x05];
340
        if(last_non_zero_p1 <= 16) goto end;
341
        block[0x0C] = temp_block[0x0C]; block[0x13] = temp_block[0x13];
342
        block[0x1A] = temp_block[0x1A]; block[0x21] = temp_block[0x21];
343
        block[0x28] = temp_block[0x28]; block[0x30] = temp_block[0x30];
344
        block[0x29] = temp_block[0x29]; block[0x22] = temp_block[0x22];
345
        if(last_non_zero_p1 <= 24) goto end;
346
        block[0x1B] = temp_block[0x1B]; block[0x14] = temp_block[0x14];
347
        block[0x0D] = temp_block[0x0D]; block[0x06] = temp_block[0x06];
348
        block[0x07] = temp_block[0x07]; block[0x0E] = temp_block[0x0E];
349
        block[0x15] = temp_block[0x15]; block[0x1C] = temp_block[0x1C];
350
        if(last_non_zero_p1 <= 32) goto end;
351
        block[0x23] = temp_block[0x23]; block[0x2A] = temp_block[0x2A];
352
        block[0x31] = temp_block[0x31]; block[0x38] = temp_block[0x38];
353
        block[0x39] = temp_block[0x39]; block[0x32] = temp_block[0x32];
354
        block[0x2B] = temp_block[0x2B]; block[0x24] = temp_block[0x24];
355
        if(last_non_zero_p1 <= 40) goto end;
356
        block[0x1D] = temp_block[0x1D]; block[0x16] = temp_block[0x16];
357
        block[0x0F] = temp_block[0x0F]; block[0x17] = temp_block[0x17];
358
        block[0x1E] = temp_block[0x1E]; block[0x25] = temp_block[0x25];
359
        block[0x2C] = temp_block[0x2C]; block[0x33] = temp_block[0x33];
360
        if(last_non_zero_p1 <= 48) goto end;
361
        block[0x3A] = temp_block[0x3A]; block[0x3B] = temp_block[0x3B];
362
        block[0x34] = temp_block[0x34]; block[0x2D] = temp_block[0x2D];
363
        block[0x26] = temp_block[0x26]; block[0x1F] = temp_block[0x1F];
364
        block[0x27] = temp_block[0x27]; block[0x2E] = temp_block[0x2E];
365
        if(last_non_zero_p1 <= 56) goto end;
366
        block[0x35] = temp_block[0x35]; block[0x3C] = temp_block[0x3C];
367
        block[0x3D] = temp_block[0x3D]; block[0x36] = temp_block[0x36];
368
        block[0x2F] = temp_block[0x2F]; block[0x37] = temp_block[0x37];
369
        block[0x3E] = temp_block[0x3E]; block[0x3F] = temp_block[0x3F];
370
    } else if (s->idsp.perm_type == FF_IDCT_PERM_TRANSPOSE) {
371
        if(last_non_zero_p1 <= 1) goto end;
372
        block[0x08] = temp_block[0x01];
373
        block[0x01] = temp_block[0x08]; block[0x02] = temp_block[0x10];
374
        if(last_non_zero_p1 <= 4) goto end;
375
        block[0x09] = temp_block[0x09]; block[0x10] = temp_block[0x02];
376
        block[0x18] = temp_block[0x03];
377
        if(last_non_zero_p1 <= 7) goto end;
378
        block[0x11] = temp_block[0x0A]; block[0x0A] = temp_block[0x11];
379
        block[0x03] = temp_block[0x18]; block[0x04] = temp_block[0x20];
380
        if(last_non_zero_p1 <= 11) goto end;
381
        block[0x0B] = temp_block[0x19];
382
        block[0x12] = temp_block[0x12]; block[0x19] = temp_block[0x0B];
383
        block[0x20] = temp_block[0x04]; block[0x28] = temp_block[0x05];
384
        if(last_non_zero_p1 <= 16) goto end;
385
        block[0x21] = temp_block[0x0C]; block[0x1A] = temp_block[0x13];
386
        block[0x13] = temp_block[0x1A]; block[0x0C] = temp_block[0x21];
387
        block[0x05] = temp_block[0x28]; block[0x06] = temp_block[0x30];
388
        block[0x0D] = temp_block[0x29]; block[0x14] = temp_block[0x22];
389
        if(last_non_zero_p1 <= 24) goto end;
390
        block[0x1B] = temp_block[0x1B]; block[0x22] = temp_block[0x14];
391
        block[0x29] = temp_block[0x0D]; block[0x30] = temp_block[0x06];
392
        block[0x38] = temp_block[0x07]; block[0x31] = temp_block[0x0E];
393
        block[0x2A] = temp_block[0x15]; block[0x23] = temp_block[0x1C];
394
        if(last_non_zero_p1 <= 32) goto end;
395
        block[0x1C] = temp_block[0x23]; block[0x15] = temp_block[0x2A];
396
        block[0x0E] = temp_block[0x31]; block[0x07] = temp_block[0x38];
397
        block[0x0F] = temp_block[0x39]; block[0x16] = temp_block[0x32];
398
        block[0x1D] = temp_block[0x2B]; block[0x24] = temp_block[0x24];
399
        if(last_non_zero_p1 <= 40) goto end;
400
        block[0x2B] = temp_block[0x1D]; block[0x32] = temp_block[0x16];
401
        block[0x39] = temp_block[0x0F]; block[0x3A] = temp_block[0x17];
402
        block[0x33] = temp_block[0x1E]; block[0x2C] = temp_block[0x25];
403
        block[0x25] = temp_block[0x2C]; block[0x1E] = temp_block[0x33];
404
        if(last_non_zero_p1 <= 48) goto end;
405
        block[0x17] = temp_block[0x3A]; block[0x1F] = temp_block[0x3B];
406
        block[0x26] = temp_block[0x34]; block[0x2D] = temp_block[0x2D];
407
        block[0x34] = temp_block[0x26]; block[0x3B] = temp_block[0x1F];
408
        block[0x3C] = temp_block[0x27]; block[0x35] = temp_block[0x2E];
409
        if(last_non_zero_p1 <= 56) goto end;
410
        block[0x2E] = temp_block[0x35]; block[0x27] = temp_block[0x3C];
411
        block[0x2F] = temp_block[0x3D]; block[0x36] = temp_block[0x36];
412
        block[0x3D] = temp_block[0x2F]; block[0x3E] = temp_block[0x37];
413
        block[0x37] = temp_block[0x3E]; block[0x3F] = temp_block[0x3F];
414
    } else {
415
        av_log(s, AV_LOG_DEBUG, "s->idsp.perm_type: %d\n",
416
                (int)s->idsp.perm_type);
417
        av_assert0(s->idsp.perm_type == FF_IDCT_PERM_NONE ||
418
                s->idsp.perm_type == FF_IDCT_PERM_LIBMPEG2 ||
419
                s->idsp.perm_type == FF_IDCT_PERM_SIMPLE ||
420
                s->idsp.perm_type == FF_IDCT_PERM_TRANSPOSE);
421
    }
422
    end:
423
    return last_non_zero_p1 - 1;
424
}