libavcodec/i386/dsputil_mmx.h

   1 /*
   2  * MMX optimized DSP utils
   3  * Copyright (c) 2007  Aurelien Jacobs <aurel@gnuage.org>
   4  *
   5  * This file is part of FFmpeg.
   6  *
   7  * FFmpeg is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * FFmpeg is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with FFmpeg; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  20  */
  21
  22 #ifndef FFMPEG_DSPUTIL_MMX_H
  23 #define FFMPEG_DSPUTIL_MMX_H
  24
  25 #include <stdint.h>
  26 #include "libavcodec/dsputil.h"
  27
  28 typedef struct { uint64_t a, b; } xmm_t;
  29
  30 extern const uint64_t ff_bone;
  31 extern const uint64_t ff_wtwo;
  32
  33 extern const uint64_t ff_pdw_80000000[2];
  34
  35 extern const uint64_t ff_pw_3;
  36 extern const uint64_t ff_pw_4;
  37 extern const xmm_t    ff_pw_5;
  38 extern const uint64_t ff_pw_8;
  39 extern const uint64_t ff_pw_15;
  40 extern const xmm_t    ff_pw_16;
  41 extern const uint64_t ff_pw_20;
  42 extern const xmm_t    ff_pw_28;
  43 extern const xmm_t    ff_pw_32;
  44 extern const uint64_t ff_pw_42;
  45 extern const uint64_t ff_pw_64;
  46 extern const uint64_t ff_pw_96;
  47 extern const uint64_t ff_pw_128;
  48 extern const uint64_t ff_pw_255;
  49
  50 extern const uint64_t ff_pb_1;
  51 extern const uint64_t ff_pb_3;
  52 extern const uint64_t ff_pb_7;
  53 extern const uint64_t ff_pb_3F;
  54 extern const uint64_t ff_pb_A1;
  55 extern const uint64_t ff_pb_FC;
  56
  57 extern const double ff_pd_1[2];
  58 extern const double ff_pd_2[2];
  59
  60 /* in/out: mma=mma+mmb, mmb=mmb-mma */
  61 #define SUMSUB_BA( a, b ) \
  62     "paddw "#b", "#a" \n\t"\
  63     "paddw "#b", "#b" \n\t"\
  64     "psubw "#a", "#b" \n\t"
  65
  66 #define SBUTTERFLY(a,b,t,n,m)\
  67     "mov" #m " " #a ", " #t "         \n\t" /* abcd */\
  68     "punpckl" #n " " #b ", " #a "     \n\t" /* aebf */\
  69     "punpckh" #n " " #b ", " #t "     \n\t" /* cgdh */\
  70
  71 #define TRANSPOSE4(a,b,c,d,t)\
  72     SBUTTERFLY(a,b,t,wd,q) /* a=aebf t=cgdh */\
  73     SBUTTERFLY(c,d,b,wd,q) /* c=imjn b=kolp */\
  74     SBUTTERFLY(a,c,d,dq,q) /* a=aeim d=bfjn */\
  75     SBUTTERFLY(t,b,c,dq,q) /* t=cgko c=dhlp */
  76
  77 #ifdef ARCH_X86_64
  78 // permutes 01234567 -> 05736421
  79 #define TRANSPOSE8(a,b,c,d,e,f,g,h,t)\
  80     SBUTTERFLY(a,b,%%xmm8,wd,dqa)\
  81     SBUTTERFLY(c,d,b,wd,dqa)\
  82     SBUTTERFLY(e,f,d,wd,dqa)\
  83     SBUTTERFLY(g,h,f,wd,dqa)\
  84     SBUTTERFLY(a,c,h,dq,dqa)\
  85     SBUTTERFLY(%%xmm8,b,c,dq,dqa)\
  86     SBUTTERFLY(e,g,b,dq,dqa)\
  87     SBUTTERFLY(d,f,g,dq,dqa)\
  88     SBUTTERFLY(a,e,f,qdq,dqa)\
  89     SBUTTERFLY(%%xmm8,d,e,qdq,dqa)\
  90     SBUTTERFLY(h,b,d,qdq,dqa)\
  91     SBUTTERFLY(c,g,b,qdq,dqa)\
  92     "movdqa %%xmm8, "#g"              \n\t"
  93 #else
  94 #define TRANSPOSE8(a,b,c,d,e,f,g,h,t)\
  95     "movdqa "#h", "#t"                \n\t"\
  96     SBUTTERFLY(a,b,h,wd,dqa)\
  97     "movdqa "#h", 16"#t"              \n\t"\
  98     "movdqa "#t", "#h"                \n\t"\
  99     SBUTTERFLY(c,d,b,wd,dqa)\
 100     SBUTTERFLY(e,f,d,wd,dqa)\
 101     SBUTTERFLY(g,h,f,wd,dqa)\
 102     SBUTTERFLY(a,c,h,dq,dqa)\
 103     "movdqa "#h", "#t"                \n\t"\
 104     "movdqa 16"#t", "#h"              \n\t"\
 105     SBUTTERFLY(h,b,c,dq,dqa)\
 106     SBUTTERFLY(e,g,b,dq,dqa)\
 107     SBUTTERFLY(d,f,g,dq,dqa)\
 108     SBUTTERFLY(a,e,f,qdq,dqa)\
 109     SBUTTERFLY(h,d,e,qdq,dqa)\
 110     "movdqa "#h", 16"#t"              \n\t"\
 111     "movdqa "#t", "#h"                \n\t"\
 112     SBUTTERFLY(h,b,d,qdq,dqa)\
 113     SBUTTERFLY(c,g,b,qdq,dqa)\
 114     "movdqa 16"#t", "#g"              \n\t"
 115 #endif
 116
 117 #define MOVQ_WONE(regd) \
 118     asm volatile ( \
 119     "pcmpeqd %%" #regd ", %%" #regd " \n\t" \
 120     "psrlw $15, %%" #regd ::)
 121
 122 void dsputilenc_init_mmx(DSPContext* c, AVCodecContext *avctx);
 123
 124 #endif /* FFMPEG_DSPUTIL_MMX_H */