frameworks/base/media/libstagefright/codecs/mp3dec/src/asm/pvmp3_dct_9_gcc.s

   1 @ ------------------------------------------------------------------
   2 @ Copyright (C) 1998-2009 PacketVideo
   3 @
   4 @ Licensed under the Apache License, Version 2.0 (the "License");
   5 @ you may not use this file except in compliance with the License.
   6 @ You may obtain a copy of the License at
   7 @
   8 @      http://www.apache.org/licenses/LICENSE-2.0
   9 @
  10 @ Unless required by applicable law or agreed to in writing, software
  11 @ distributed under the License is distributed on an "AS IS" BASIS,
  12 @ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
  13 @ express or implied.
  14 @ See the License for the specific language governing permissions
  15 @ and limitations under the License.
  16 @ -------------------------------------------------------------------
  17
  18 @
  19 @
  20 @   Filename: pvmp3_dct_9_gcc.s
  21 @
  22 @------------------------------------------------------------------------------
  23 @ REVISION HISTORY
  24 @
  25 @
  26 @ Who:                                   Date: MM/DD/YYYY
  27 @ Description:
  28 @
  29 @------------------------------------------------------------------------------
  30
  31 .arm
  32
  33 .align 4
  34
  35 .text
  36
  37
  38 @------------------------------------------------------------------------------
  39
  40 .global pvmp3_dct_9
  41
  42 pvmp3_dct_9:
  43         stmfd    sp!,{r4-r11,lr}
  44         ldr      r2, [r0, #0x20]
  45         ldr      r3, [r0, #0]
  46         ldr      r12,[r0, #4]
  47         add      r1,r2,r3
  48         sub      lr,r2,r3
  49         ldr      r3,[r0, #0x1c]
  50         ldr      r4,[r0, #0x18]
  51         add      r2,r3,r12
  52         ldr      r5,[r0,#8]
  53         sub      r3,r3,r12
  54         add      r12,r4,r5
  55         sub      r4,r4,r5
  56         ldr      r5,[r0, #0x14]
  57         ldr      r7,[r0, #0xc]
  58         ldr      r9,[r0, #0x10]
  59         add      r6,r5,r7
  60         sub      r5,r5,r7
  61         add      r7,r1,r12
  62         add      r8,r9,r2
  63         add      r7,r7,r6
  64         add      r10,r7,r8
  65         rsb      r7,r8,r7,asr #1
  66         str      r7,[r0, #0x18]
  67         rsb      r2,r9,r2,asr #1
  68         str      r10,[r0,#0]
  69         ldr      r11,cos_2pi_9
  70         rsb      r7,r2,#0
  71
  72         ldr      r10,cos_4pi_9
  73         mov      r9,r1,lsl #1
  74         mov      r8,r7
  75
  76 @    vec[4]  = fxp_mac32_Q32( vec[4], tmp0<<1, cos_2pi_9)@
  77
  78         smlal    r1,r8,r11,r9
  79         ldr      r11,cos_pi_9
  80                 mov      r1,r9                  @@@@@@  !!!!!!
  81
  82 @    vec[8]  = fxp_mac32_Q32( vec[8], tmp0<<1, cos_4pi_9)@
  83
  84         smlal    r1,r7,r10,r9
  85
  86         mov      r1,r12,lsl #1
  87
  88
  89 @    vec[2]  = fxp_mac32_Q32( vec[2], tmp0<<1, cos_pi_9)@
  90
  91         smlal    r9,r2,r11,r9
  92         rsb      r9,r10,#0
  93         ldr      r11,cos_5pi_9
  94
  95         smlal    r12,r2,r9,r1
  96
  97
  98
  99 @    vec[2]  = fxp_mac32_Q32( vec[2], tmp2<<1, cos_5pi_9)@
 100
 101         ldr      r9,cos_2pi_9
 102         mov      r12,r1                 @@@@@@  !!!!!!
 103         smlal    r12,r8,r11,r1
 104
 105
 106 @    vec[8]  = fxp_mac32_Q32( vec[8], tmp2<<1, cos_2pi_9)@
 107
 108         smlal    r1,r7,r9,r1
 109         mov      r1,r6,lsl #1
 110         smlal    r12,r7,r11,r1
 111         and      r6,r10,r11,asr #14
 112         smlal    r12,r8,r6,r1
 113         ldr      r10,cos_11pi_18
 114         add      r12,r11,r6
 115         smlal    r1,r2,r12,r1
 116         ldr      r9,cos_8pi_9
 117         str      r2,[r0,#8]
 118         mov      r1,r5,lsl #1
 119
 120 @    vec[8]  = fxp_mac32_Q32( vec[8], tmp3<<1, cos_8pi_9)@
 121
 122         smull    r2,r6,r9,r1
 123         str      r7,[r0,#0x20]
 124         mov      r2,r4,lsl #1
 125         ldr      r7,cos_13pi_18
 126         smlal    r12,r6,r10,r2
 127
 128         mov      r3,r3,lsl #1
 129
 130 @    vec[5]  = fxp_mac32_Q32( vec[5], tmp8<<1, cos_13pi_18)@
 131
 132         smlal    r12,r6,r7,r3
 133         add      r4,r5,r4
 134         mov      r12,lr,lsl #1
 135         sub      lr,r4,lr
 136         ldr      r7,cos_17pi_18
 137         str      r8,[r0, #0x10]
 138         ldr      r4,cos_pi_6
 139
 140         mov      lr,lr,lsl #1
 141
 142 @    vec[1]  = fxp_mac32_Q32( vec[1], tmp8<<1, cos_17pi_18)@
 143
 144         smlal    r8,r6,r7,r12
 145
 146 @    vec[3]  = fxp_mul32_Q32((tmp5 + tmp6  - tmp8)<<1, cos_pi_6)@
 147
 148         smull    r5,lr,r4,lr
 149         str      r6,[r0, #4]
 150         str      lr,[r0, #0xc]
 151
 152
 153 @    vec[5]  = fxp_mul32_Q32(tmp5<<1, cos_17pi_18)@
 154         smull    r5,lr,r7,r1
 155         rsb      r6,r9,#0
 156 @    vec[5]  = fxp_mac32_Q32( vec[5], tmp6<<1,  cos_7pi_18)@
 157         smlal    r5,lr,r6,r2
 158 @    vec[5]  = fxp_mac32_Q32( vec[5], tmp7<<1,    cos_pi_6)@
 159         smlal    r5,lr,r4,r3
 160 @    vec[5]  = fxp_mac32_Q32( vec[5], tmp8<<1, cos_13pi_18)@
 161         smlal    r5,lr,r10,r12
 162         str      lr,[r0, #0x14]
 163         rsb      lr,r10,#0
 164
 165 @    vec[7]  = fxp_mul32_Q32(tmp5<<1, cos_5pi_18)@
 166         smull    r5,r1,lr,r1
 167 @    vec[7]  = fxp_mac32_Q32( vec[7], tmp6<<1, cos_17pi_18)@
 168         smlal    r2,r1,r7,r2
 169 @    vec[7]  = fxp_mac32_Q32( vec[7], tmp7<<1,    cos_pi_6)@
 170         smlal    r3,r1,r4,r3
 171 @    vec[7]  = fxp_mac32_Q32( vec[7], tmp8<<1, cos_11pi_18)@
 172         smlal    r12,r1,r9,r12
 173         str      r1,[r0, #0x1c]
 174         ldmfd    sp!,{r4-r11,pc}
 175 cos_2pi_9:
 176         .word      0x620dbe80
 177 cos_4pi_9:
 178         .word      0x163a1a80
 179 cos_pi_9:
 180         .word      0x7847d900
 181 cos_5pi_9:
 182         .word      0x87b82700
 183 cos_8pi_9:
 184         .word      0xd438af00
 185 cos_11pi_18:
 186         .word      0xadb92280
 187 cos_13pi_18:
 188         .word      0x91261480
 189 cos_17pi_18:
 190         .word      0x81f1d200
 191 cos_pi_6:
 192         .word      0x6ed9eb80
 193