src/third_party/ffmpeg/libavcodec/bfin/pixels.S

   1 /*
   2  * Blackfin Pixel Operations
   3  * Copyright (C) 2007 Marc Hoffman <marc.hoffman@analog.com>
   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 #include "libavutil/bfin/asm.h"
  23
  24 /*
  25   motion compensation
  26   primitives
  27
  28      * Halfpel motion compensation with rounding (a+b+1)>>1.
  29      * This is an array[4][4] of motion compensation funcions for 4
  30      * horizontal blocksizes (8,16) and the 4 halfpel positions<br>
  31      * *pixels_tab[ 0->16xH 1->8xH ][ xhalfpel + 2*yhalfpel ]
  32      * @param block destination where the result is stored
  33      * @param pixels source
  34      * @param line_size number of bytes in a horizontal line of block
  35      * @param h height
  36
  37 */
  38
  39 DEFUN(put_pixels8uc,mL1,
  40         (uint8_t *block, const uint8_t *s0, const uint8_t *s1,
  41                  int dest_size, int line_size, int h)):
  42         i3=r0;        // dest
  43         i0=r1;        // src0
  44         i1=r2;        // src1
  45         r0=[sp+12];   // dest_size
  46         r2=[sp+16];   // line_size
  47         p0=[sp+20];   // h
  48         [--sp] = (r7:6);
  49         r0+=-4;
  50         m3=r0;
  51         r2+=-8;
  52         m0=r2;
  53         LSETUP(pp8$0,pp8$1) LC0=P0;
  54         DISALGNEXCPT                || R0 = [I0++]  || R2  =[I1++];
  55
  56 pp8$0:  DISALGNEXCPT                || R1 = [I0++]  || R3  =[I1++];
  57         R6 = BYTEOP1P(R1:0,R3:2)    || R0 = [I0++M0]|| R2  =[I1++M0];
  58         R7 = BYTEOP1P(R1:0,R3:2)(R) || R0 = [I0++]  || [I3++] = R6 ;
  59 pp8$1:  DISALGNEXCPT                || R2 = [I1++]  || [I3++M3] = R7;
  60
  61         (r7:6) = [sp++];
  62         RTS;
  63 DEFUN_END(put_pixels8uc)
  64
  65 DEFUN(put_pixels16uc,mL1,
  66         (uint8_t *block, const uint8_t *s0, const uint8_t *s1,
  67                  int dest_size, int line_size, int h)):
  68         link 0;
  69         [--sp] = (r7:6);
  70         i3=r0;        // dest
  71         i0=r1;        // src0
  72         i1=r2;        // src1
  73         r0=[fp+20];   // dest_size
  74         r2=[fp+24];   // line_size
  75         p0=[fp+28];   // h
  76
  77
  78         r0+=-12;
  79         m3=r0;        // line_size
  80         r2+=-16;
  81         m0=r2;
  82
  83         LSETUP(pp16$0,pp16$1) LC0=P0;
  84          DISALGNEXCPT                || R0 = [I0++]   || R2  =[I1++];
  85
  86 pp16$0:  DISALGNEXCPT                || R1 = [I0++]   || R3  =[I1++];
  87          R6 = BYTEOP1P(R1:0,R3:2)    || R0 = [I0++]   || R2  =[I1++];
  88          R7 = BYTEOP1P(R1:0,R3:2)(R) || R1 = [I0++]   || R3  =[I1++];
  89          [I3++] = R6;
  90          R6 = BYTEOP1P(R1:0,R3:2)    || R0 = [I0++M0] || R2  =[I1++M0];
  91          R7 = BYTEOP1P(R1:0,R3:2)(R) || R0 = [I0++]   || [I3++] = R7 ;
  92          [I3++] = R6;
  93 pp16$1:  DISALGNEXCPT                || R2 = [I1++]   || [I3++M3] = R7;
  94
  95         (r7:6) = [sp++];
  96         unlink;
  97         RTS;
  98 DEFUN_END(put_pixels16uc)
  99
 100 DEFUN(z_put_pixels16_xy2,mL1,
 101         (uint8_t *block, const uint8_t *s0,
 102                  int dest_size, int line_size, int h)):
 103         link 0;
 104         [--sp] = (r7:4);
 105         i3=r0;        // dest
 106         i0=r1;        // src0--> pixels
 107         i1=r1;        // src1--> pixels + line_size
 108         r2+=-12;
 109         m2=r2;        // m2=dest_width-4
 110         r2=[fp+20];
 111         m3=r2;        // line_size
 112         p0=[fp+24];   // h
 113         r2+=-16;
 114         i1+=m3;       /* src1 + line_size */
 115         m0=r2;        /* line-size - 20 */
 116
 117         B0 = I0;
 118         B1 = I1;
 119         B3 = I3;
 120
 121         DISALGNEXCPT                       || R0 = [I0++] || R2  =[I1++];
 122
 123         LSETUP(LS$16E,LE$16E) LC0=P0;
 124 LS$16E: DISALGNEXCPT                       || R1 = [I0++] || R3  =[I1++];
 125         R4 = BYTEOP2P (R3:2,R1:0) (RNDL)   || R0 = [I0++] || R2  =[I1++];
 126         R5 = BYTEOP2P (R3:2,R1:0) (RNDL,R) || R1 = [I0++] || [I3++] = R4 ;
 127         DISALGNEXCPT                       || R3 = [I1++] || [I3++] = R5;
 128         R4 = BYTEOP2P (R3:2,R1:0) (RNDL)   || R0 = [I0++M0]|| R2  = [I1++M0];
 129         R5 = BYTEOP2P (R3:2,R1:0) (RNDL,R) || R0 = [I0++] || [I3++] = R4 ;
 130 LE$16E: DISALGNEXCPT                       || R2 = [I1++] || [I3++M2] = R5;
 131
 132         M1 = 1;
 133         I3 = B3;
 134         I1 = B1;
 135         I0 = B0;
 136
 137         I0 += M1;
 138         I1 += M1;
 139
 140         DISALGNEXCPT                       || R0 = [I0++] || R2  =[I1++];
 141         LSETUP(LS$16O,LE$16O) LC0=P0;
 142 LS$16O: DISALGNEXCPT                       || R1 = [I0++] || R3  =[I1++];
 143         R4 = BYTEOP2P (R3:2,R1:0) (RNDH)   || R0 = [I0++] || R2  =[I1++];
 144         R5 = BYTEOP2P (R3:2,R1:0) (RNDH,R) || R1 = [I0++] || R6  =[I3++];
 145         R4 = R4 +|+ R6                       || R7 = [I3--];
 146         R5 = R5 +|+ R7                       || [I3++] = R4;
 147         DISALGNEXCPT                       || R3  =[I1++] || [I3++] = R5;
 148         R4 = BYTEOP2P (R3:2,R1:0) (RNDH)   || R0 = [I0++M0]|| R2  = [I1++M0];
 149         R5 = BYTEOP2P (R3:2,R1:0) (RNDH,R) || R0 = [I0++] || R6 = [I3++];
 150         R4 = R4 +|+ R6                       || R7 = [I3--];
 151         R5 = R5 +|+ R7                       || [I3++] = R4;
 152 LE$16O: DISALGNEXCPT                       || R2 = [I1++] || [I3++M2] = R5;
 153
 154         (r7:4) = [sp++];
 155         unlink;
 156         rts;
 157 DEFUN_END(z_put_pixels16_xy2)
 158
 159 DEFUN(z_put_pixels8_xy2,mL1,
 160         (uint8_t *block, const uint8_t *s0,
 161                  int dest_size, int line_size, int h)):
 162         link 0;
 163         [--sp] = (r7:4);
 164         i3=r0;        // dest
 165         i0=r1;        // src0--> pixels
 166         i1=r1;        // src1--> pixels + line_size
 167         r2+=-4;
 168         m2=r2;        // m2=dest_width-4
 169         r2=[fp+20];
 170         m3=r2;        // line_size
 171         p0=[fp+24];   // h
 172         r2+=-8;
 173         i1+=m3;       /* src1 + line_size */
 174         m0=r2;        /* line-size - 20 */
 175
 176         b0 = I0;
 177         b1 = I1;
 178         b3 = I3;
 179
 180         LSETUP(LS$8E,LE$8E) LC0=P0;
 181         DISALGNEXCPT                       || R0 = [I0++]   || R2  =[I1++];
 182 LS$8E:  DISALGNEXCPT                       || R1 = [I0++]   || R3  =[I1++];
 183         R4 = BYTEOP2P (R3:2,R1:0) (RNDL)   || R0 = [I0++M0] || R2  =[I1++M0];
 184         R5 = BYTEOP2P (R3:2,R1:0) (RNDL,R) || R0 = [I0++]   || [I3++] = R4 ;
 185 LE$8E:  DISALGNEXCPT                       || R2 = [I1++]   || [I3++M2] = R5;
 186
 187         M1 = 1;
 188         I3 = b3;
 189         I1 = b1;
 190         I0 = b0;
 191
 192         I0 += M1;
 193         I1 += M1;
 194
 195         LSETUP(LS$8O,LE$8O) LC0=P0;
 196         DISALGNEXCPT                       || R0 = [I0++]   || R2  =[I1++];
 197 LS$8O:  DISALGNEXCPT                       || R1 = [I0++]   || R3  =[I1++];
 198         R4 = BYTEOP2P (R3:2,R1:0) (RNDH)   || R0 = [I0++M0] || R2  =[I1++M0];
 199         R5 = BYTEOP2P (R3:2,R1:0) (RNDH,R) || R0 = [I0++]   || R6  =[I3++];
 200         R4 = R4 +|+ R6                                      || R7 = [I3--];
 201         R5 = R5 +|+ R7                                      || [I3++] = R4;
 202 LE$8O:  DISALGNEXCPT                       || R2  =[I1++]   || [I3++M2] = R5;
 203
 204         (r7:4) = [sp++];
 205         unlink;
 206         rts;
 207 DEFUN_END(z_put_pixels8_xy2)