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

@ ------------------------------------------------------------------
@ 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_9_gcc.s
@
@------------------------------------------------------------------------------
@ REVISION HISTORY
@
@
@ Who:                                   Date: MM/DD/YYYY
@ Description:
@
@------------------------------------------------------------------------------

.arm

.align 4

.text


@------------------------------------------------------------------------------

.global pvmp3_dct_9

pvmp3_dct_9:
        stmfd    sp!,{r4-r11,lr}
        ldr      r2, [r0, #0x20]
        ldr      r3, [r0, #0]
        ldr      r12,[r0, #4]
        add      r1,r2,r3
        sub      lr,r2,r3
        ldr      r3,[r0, #0x1c]
        ldr      r4,[r0, #0x18]
        add      r2,r3,r12
        ldr      r5,[r0,#8]
        sub      r3,r3,r12
        add      r12,r4,r5
        sub      r4,r4,r5
        ldr      r5,[r0, #0x14]
        ldr      r7,[r0, #0xc]
        ldr      r9,[r0, #0x10]
        add      r6,r5,r7
        sub      r5,r5,r7
        add      r7,r1,r12
        add      r8,r9,r2
        add      r7,r7,r6
        add      r10,r7,r8
        rsb      r7,r8,r7,asr #1
        str      r7,[r0, #0x18]
        rsb      r2,r9,r2,asr #1
        str      r10,[r0,#0]
        ldr      r11,cos_2pi_9
        rsb      r7,r2,#0

        ldr      r10,cos_4pi_9
        mov      r9,r1,lsl #1
        mov      r8,r7

@    vec[4]  = fxp_mac32_Q32( vec[4], tmp0<<1, cos_2pi_9)@

        smlal    r1,r8,r11,r9
        ldr      r11,cos_pi_9
		mov      r1,r9			@@@@@@  !!!!!!

@    vec[8]  = fxp_mac32_Q32( vec[8], tmp0<<1, cos_4pi_9)@

        smlal    r1,r7,r10,r9

        mov      r1,r12,lsl #1


@    vec[2]  = fxp_mac32_Q32( vec[2], tmp0<<1, cos_pi_9)@

        smlal    r9,r2,r11,r9
        rsb      r9,r10,#0
        ldr      r11,cos_5pi_9

        smlal    r12,r2,r9,r1



@    vec[2]  = fxp_mac32_Q32( vec[2], tmp2<<1, cos_5pi_9)@

        ldr      r9,cos_2pi_9
        mov      r12,r1			@@@@@@  !!!!!!
        smlal    r12,r8,r11,r1


@    vec[8]  = fxp_mac32_Q32( vec[8], tmp2<<1, cos_2pi_9)@

        smlal    r1,r7,r9,r1
        mov      r1,r6,lsl #1
        smlal    r12,r7,r11,r1
        and      r6,r10,r11,asr #14
        smlal    r12,r8,r6,r1
        ldr      r10,cos_11pi_18
        add      r12,r11,r6
        smlal    r1,r2,r12,r1
        ldr      r9,cos_8pi_9
        str      r2,[r0,#8]
        mov      r1,r5,lsl #1

@    vec[8]  = fxp_mac32_Q32( vec[8], tmp3<<1, cos_8pi_9)@

        smull    r2,r6,r9,r1
        str      r7,[r0,#0x20]
        mov      r2,r4,lsl #1
        ldr      r7,cos_13pi_18
        smlal    r12,r6,r10,r2

        mov      r3,r3,lsl #1

@    vec[5]  = fxp_mac32_Q32( vec[5], tmp8<<1, cos_13pi_18)@

        smlal    r12,r6,r7,r3
        add      r4,r5,r4
        mov      r12,lr,lsl #1
        sub      lr,r4,lr
        ldr      r7,cos_17pi_18
        str      r8,[r0, #0x10]
        ldr      r4,cos_pi_6

        mov      lr,lr,lsl #1

@    vec[1]  = fxp_mac32_Q32( vec[1], tmp8<<1, cos_17pi_18)@

        smlal    r8,r6,r7,r12

@    vec[3]  = fxp_mul32_Q32((tmp5 + tmp6  - tmp8)<<1, cos_pi_6)@

        smull    r5,lr,r4,lr
        str      r6,[r0, #4]
        str      lr,[r0, #0xc]


@    vec[5]  = fxp_mul32_Q32(tmp5<<1, cos_17pi_18)@
        smull    r5,lr,r7,r1
        rsb      r6,r9,#0
@    vec[5]  = fxp_mac32_Q32( vec[5], tmp6<<1,  cos_7pi_18)@
        smlal    r5,lr,r6,r2
@    vec[5]  = fxp_mac32_Q32( vec[5], tmp7<<1,    cos_pi_6)@
        smlal    r5,lr,r4,r3
@    vec[5]  = fxp_mac32_Q32( vec[5], tmp8<<1, cos_13pi_18)@
        smlal    r5,lr,r10,r12
        str      lr,[r0, #0x14]
        rsb      lr,r10,#0

@    vec[7]  = fxp_mul32_Q32(tmp5<<1, cos_5pi_18)@
        smull    r5,r1,lr,r1
@    vec[7]  = fxp_mac32_Q32( vec[7], tmp6<<1, cos_17pi_18)@
        smlal    r2,r1,r7,r2
@    vec[7]  = fxp_mac32_Q32( vec[7], tmp7<<1,    cos_pi_6)@
        smlal    r3,r1,r4,r3
@    vec[7]  = fxp_mac32_Q32( vec[7], tmp8<<1, cos_11pi_18)@
        smlal    r12,r1,r9,r12
        str      r1,[r0, #0x1c]
        ldmfd    sp!,{r4-r11,pc}
cos_2pi_9:
        .word      0x620dbe80
cos_4pi_9:
        .word      0x163a1a80
cos_pi_9:
        .word      0x7847d900
cos_5pi_9:
        .word      0x87b82700
cos_8pi_9:
        .word      0xd438af00
cos_11pi_18:
        .word      0xadb92280
cos_13pi_18:
        .word      0x91261480
cos_17pi_18:
        .word      0x81f1d200
cos_pi_6:
        .word      0x6ed9eb80