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|
; ------------------------------------------------------------------
; Copyright (C) 1998-2009 PacketVideo
;
; Licensed under the Apache License, Version 2.0 (the "License");
; you may not use this file except in compliance with the License.
; You may obtain a copy of the License at
;
; http://www.apache.org/licenses/LICENSE-2.0
;
; Unless required by applicable law or agreed to in writing, software
; distributed under the License is distributed on an "AS IS" BASIS,
; WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
; express or implied.
; See the License for the specific language governing permissions
; and limitations under the License.
; -------------------------------------------------------------------
;
;
; Filename: pvmp3_dct_18.s
;
;------------------------------------------------------------------------------
; REVISION HISTORY
;
;
; Who: Date: MM/DD/YYYY
; Description:
;
;------------------------------------------------------------------------------
EXPORT |pvmp3_mdct_18|
IMPORT pvmp3_dct_9
;------------------------------------------------------------------------------
AREA |.text|, CODE, READONLY, ALIGN=2
;------------------------------------------------------------------------------
|pvmp3_mdct_18| PROC
stmfd sp!,{r4-r10,lr}
mov r7,r2
ldr r2,table
mov r6,r1
add r3,r2,#0x24
add r12,r3,#0x44
add r1,r0,#0x44
mov r5,r0
; for ( i=9; i!=0; i--)
; {
mov r4,#9
Loop_1
; tmp = *(pt_vec);
; tmp1 = *(pt_vec_o);
ldr lr,[r0] ;; tmp == lr
ldr r8,[r3],#4 ;; tmp1 == r8
; tmp = fxp_mul32_Q32( tmp<<1, *(pt_cos++ ));
; tmp1 = fxp_mul32_Q27( tmp1, *(pt_cos_x--));
mov lr,lr,lsl #1
smull r10,lr,r8,lr
ldr r8,[r12],#-4
ldr r9,[r1]
subs r4,r4,#1
smull r9,r10,r8,r9
mov r8,r9,lsr #27
add r8,r8,r10,lsl #5
; *(pt_vec++) = tmp + tmp1 ;
; *(pt_vec_o--) = fxp_mul32_Q28( (tmp - tmp1), *(pt_cos_split++));
add r9,lr,r8
sub r8,lr,r8
ldr lr,[r2],#4
str r9,[r0],#4
smull r8,r9,lr,r8
mov lr,r8,lsr #28
add lr,lr,r9,lsl #4
str lr,[r1],#-4
bne Loop_1
; }
mov r0,r5 ;; r0 = vec
bl pvmp3_dct_9
add r0,r5,#0x24 ;; r0 = &vec[9]
bl pvmp3_dct_9
ldr r0,[r5,#0x20]
ldr r2,[r5,#0x40]
str r0,[r5,#0x40]
ldr r0,[r5,#0x1c]
ldr r3,[r5,#0x38]
str r0,[r5,#0x38]
ldr r1,[r5,#0x18]
ldr r0,[r5,#0x30]
str r1,[r5,#0x30]
ldr r12,[r5,#0x14]
ldr r1,[r5,#0x28]
str r12,[r5,#0x28]
ldr r12,[r5,#0x10]
str r12,[r5,#0x20]
ldr r12,[r5,#0xc]
str r12,[r5,#0x18]
ldr r12,[r5,#8]
str r12,[r5,#0x10]
ldr r12,[r5,#4]
str r12,[r5,#8]
ldr r12,[r5,#0x24]
sub r12,r12,r1
str r12,[r5,#4]
ldr r12,[r5,#0x2c]
sub r1,r12,r1
str r1,[r5,#0xc]
sub r1,r12,r0
str r1,[r5,#0x14]
ldr r1,[r5,#0x34]
sub r0,r1,r0
str r0,[r5,#0x1c]
sub r0,r1,r3
str r0,[r5,#0x24]
ldr r1,[r5,#0x3c]
sub r3,r1,r3
sub r1,r1,r2
str r1,[r5,#0x34]
str r3,[r5,#0x2c]
ldr r1,[r5,#0x44]
sub r1,r1,r2
str r1,[r5,#0x3c]
ldr r12,[r5,#0]
Loop_2
add r1,r5,r4,lsl #2
ldr r2,[r1,#0x28]
ldr r3,[r6,r4,lsl #2]
add r0,r0,r2
str r0,[r1,#0x28]
ldr lr,[r7,r4,lsl #2]
ldr r1,[r1,#4]
smlal r0,r3,lr,r0
mov r0,r2
add r2,r12,r1
rsb r2,r2,#0
str r3,[r5,r4,lsl #2]
str r2,[r6,r4,lsl #2]
add r4,r4,#1
cmp r4,#6
mov r12,r1
blt Loop_2
ldr r1,[r5,#0x40]
ldr r2,[r6,#0x18]
add r3,r0,r1
str r3,[r5,#0x40]
ldr lr,[r7,r4,lsl #2]
mov r3,r3,lsl #1
ldr r0,[r5,#0x1c]
smlal r3,r2,lr,r3
add r3,r12,r0
str r2,[r5,#0x18]
ldr r2,[r6,#0x1c]
rsb r3,r3,#0
str r3,[r6,#0x18]
ldr r3,[r5,#0x20]
add r0,r3,r0
rsb r0,r0,#0
str r0,[r6,#0x1c]
ldr r3,[r5,#0x44]
ldr r0,[r6,#0x20]
add r3,r3,r1
mov r1,r2
ldr r10,[r7,#0x1c]
mov r2,r3,lsl #1
smlal r12,r1,r10,r2
str r1,[r5,#0x1c]
ldr r1,[r5,#0x20]
ldr r3,[r5,#0x24]
add r1,r1,r3
rsb r1,r1,#0
str r1,[r6,#0x20]
ldr r1,[r5,#0x44]
ldr r3,[r7,#0x20]
mov r1,r1,lsl #1
smlal r12,r0,r3,r1
ldr lr,[r7,#0x24]
ldr r3,[r6,#0x24]
str r0,[r5,#0x20]
smlal r1,r3,lr,r1
ldr r0,[r6,#0x40]
ldr r12,[r6,#0x44]
str r3,[r5,#0x24]
ldr r1,[r5,#0x28]
ldr r3,[r7,#0x44]
mov r1,r1,lsl #1
smlal r1,r12,r3,r1
ldr r1,[r5,#0x40]
str r12,[r5,#0x44]
rsb r8,r1,#0
str r8,[r5,#0x28]
ldr r1,[r5,#0x2c]
ldr r3,[r7,#0x40]
mov r1,r1,lsl #1
smlal r1,r0,r3,r1
str r0,[r5,#0x40]
ldr r0,[r5,#0x3c]
ldr r1,[r6,#0x38]
ldr r3,[r6,#0x3c]
rsb r9,r0,#0
str r9,[r5,#0x2c]
ldr r0,[r5,#0x30]
ldr r12,[r7,#0x3c]
mov r0,r0,lsl #1
smlal r0,r3,r12,r0
str r3,[r5,#0x3c]
ldr r0,[r5,#0x38]
rsb r0,r0,#0
str r0,[r5,#0x30]
ldr r3,[r5,#0x34]
ldr r12,[r7,#0x38]
mov r3,r3,lsl #1
smlal r3,r1,r12,r3
mov r0,r0,lsl #1
str r1,[r5,#0x38]
ldr r4,[r7,#0x34]
ldr r1,[r6,#0x34]
ldr r3,[r6,#0x30]
smlal r0,r1,r4,r0
ldr r12,[r6,#0x2c]
ldr lr,[r6,#0x28]
str r1,[r5,#0x34]
ldr r1,[r7,#0x30]
mov r0,r9,lsl #1
smlal r0,r3,r1,r0
mov r0,r8,lsl #1
ldr r1,[r7,#0x2c]
str r3,[r5,#0x30]
smlal r0,r12,r1,r0
ldr r0,[r7,#0x28]
str r12,[r5,#0x2c]
smlal r2,lr,r0,r2
str lr,[r5,#0x28]
ldr r1,[r6,#4]
ldr r12,[r7,#0x48]
mov r2,r1,lsl #1
ldr r1,[r6,#0x20]
ldr r0,[r6]
mov r1,r1,lsl #1
smull r4,lr,r12,r1
ldr r3,[r6,#0x1c]
str lr,[r6]
ldr r12,[r7,#0x4c]
mov r3,r3,lsl #1
smull r4,lr,r12,r3
mov r0,r0,lsl #1
ldr r12,[r7,#0x64]
str lr,[r6,#4]
smull r4,lr,r12,r2
ldr r12,[r7,#0x68]
str lr,[r6,#0x1c]
smull r4,lr,r12,r0
ldr r12,[r7,#0x6c]
str lr,[r6,#0x20]
smull lr,r0,r12,r0
ldr r12,[r7,#0x70]
str r0,[r6,#0x24]
smull r0,r2,r12,r2
ldr r0,[r7,#0x88]
str r2,[r6,#0x28]
smull r3,r2,r0,r3
ldr r0,[r7,#0x8c]
str r2,[r6,#0x40]
smull r2,r1,r0,r1
str r1,[r6,#0x44]
ldr r0,[r6,#0x18]
ldr lr,[r7,#0x50]
mov r1,r0,lsl #1
ldr r0,[r6,#0x14]
smull r5,r4,lr,r1
ldr r12,[r6,#0x10]
mov r3,r0,lsl #1
ldr r0,[r6,#0xc]
mov r12,r12,lsl #1
mov r2,r0,lsl #1
ldr r0,[r6,#8]
str r4,[r6,#8]
ldr lr,[r7,#0x54]
mov r0,r0,lsl #1
smull r5,r4,lr,r3
ldr lr,[r7,#0x58]
str r4,[r6,#0xc]
smull r5,r4,lr,r12
ldr lr,[r7,#0x5c]
str r4,[r6,#0x10]
smull r5,r4,lr,r2
ldr lr,[r7,#0x60]
str r4,[r6,#0x14]
smull r5,r4,lr,r0
ldr lr,[r7,#0x74]
str r4,[r6,#0x18]
smull r4,r0,lr,r0
ldr lr,[r7,#0x78]
str r0,[r6,#0x2c]
smull r0,r2,lr,r2
ldr r0,[r7,#0x7c]
str r2,[r6,#0x30]
smull r12,r2,r0,r12
ldr r0,[r7,#0x80]
str r2,[r6,#0x34]
smull r3,r2,r0,r3
ldr r0,[r7,#0x84]
str r2,[r6,#0x38]
smull r2,r1,r0,r1
str r1,[r6,#0x3c]
ldmfd sp!,{r4-r10,pc}
table
DCD cosTerms_dct18
ENDP
;------------------------------------------------------------------------------
AREA |.constdata|, DATA, READONLY, ALIGN=2
;------------------------------------------------------------------------------
cosTerms_dct18
DCD 0x0807d2b0
DCD 0x08483ee0
DCD 0x08d3b7d0
DCD 0x09c42570
DCD 0x0b504f30
DCD 0x0df29440
DCD 0x12edfb20
DCD 0x1ee8dd40
DCD 0x5bca2a00
cosTerms_1_ov_cos_phi
DCD 0x400f9c00
DCD 0x408d6080
DCD 0x418dcb80
DCD 0x431b1a00
DCD 0x4545ea00
DCD 0x48270680
DCD 0x4be25480
DCD 0x50ab9480
DCD 0x56ce4d80
DCD 0x05ebb630
DCD 0x06921a98
DCD 0x0771d3a8
DCD 0x08a9a830
DCD 0x0a73d750
DCD 0x0d4d5260
DCD 0x127b1ca0
DCD 0x1ea52b40
DCD 0x5bb3cc80
END
|
