vp8/common/arm/neon/shortidct4x4llm_1_neon.asm

   1 ;
   2 ;  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
   3 ;
   4 ;  Use of this source code is governed by a BSD-style license
   5 ;  that can be found in the LICENSE file in the root of the source
   6 ;  tree. An additional intellectual property rights grant can be found
   7 ;  in the file PATENTS.  All contributing project authors may
   8 ;  be found in the AUTHORS file in the root of the source tree.
   9 ;
  10
  11
  12     EXPORT  |vp8_short_idct4x4llm_1_neon|
  13     EXPORT  |vp8_dc_only_idct_neon|
  14     ARM
  15     REQUIRE8
  16     PRESERVE8
  17
  18     AREA ||.text||, CODE, READONLY, ALIGN=2
  19 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
  20 ;void vp8_short_idct4x4llm_1_c(short *input, short *output, int pitch);
  21 ; r0    short *input;
  22 ; r1    short *output;
  23 ; r2    int pitch;
  24 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
  25 |vp8_short_idct4x4llm_1_neon| PROC
  26     vld1.16         {d0[]}, [r0]            ;load input[0]
  27
  28     add             r3, r1, r2
  29     add             r12, r3, r2
  30
  31     vrshr.s16       d0, d0, #3
  32
  33     add             r0, r12, r2
  34
  35     vst1.16         {d0}, [r1]
  36     vst1.16         {d0}, [r3]
  37     vst1.16         {d0}, [r12]
  38     vst1.16         {d0}, [r0]
  39
  40     bx             lr
  41     ENDP
  42
  43 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;
  44 ;void vp8_dc_only_idct_c(short input_dc, short *output, int pitch);
  45 ; r0    short input_dc;
  46 ; r1    short *output;
  47 ; r2    int pitch;
  48 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
  49 |vp8_dc_only_idct_neon| PROC
  50     vdup.16         d0, r0
  51
  52     add             r3, r1, r2
  53     add             r12, r3, r2
  54
  55     vrshr.s16       d0, d0, #3
  56
  57     add             r0, r12, r2
  58
  59     vst1.16         {d0}, [r1]
  60     vst1.16         {d0}, [r3]
  61     vst1.16         {d0}, [r12]
  62     vst1.16         {d0}, [r0]
  63
  64     bx             lr
  65
  66     ENDP
  67     END