117299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong@/* 217299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong@ ** Copyright 2003-2010, VisualOn, Inc. 317299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong@ ** 417299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong@ ** Licensed under the Apache License, Version 2.0 (the "License"); 517299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong@ ** you may not use this file except in compliance with the License. 617299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong@ ** You may obtain a copy of the License at 717299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong@ ** 817299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong@ ** http://www.apache.org/licenses/LICENSE-2.0 917299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong@ ** 1017299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong@ ** Unless required by applicable law or agreed to in writing, software 1117299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong@ ** distributed under the License is distributed on an "AS IS" BASIS, 1217299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong@ ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1317299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong@ ** See the License for the specific language governing permissions and 1417299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong@ ** limitations under the License. 1517299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong@ */ 1617299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong@ 1717299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong@void Pred_lt4( 1817299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong@ Word16 exc[], /* in/out: excitation buffer */ 1917299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong@ Word16 T0, /* input : integer pitch lag */ 2017299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong@ Word16 frac, /* input : fraction of lag */ 2117299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong@ Word16 L_subfr /* input : subframe size */ 2217299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong@) 2317299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong@*********************************************************************** 2417299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong@ r0 --- exc[] 2517299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong@ r1 --- T0 2617299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong@ r2 --- frac 2717299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong@ r3 --- L_subfr 2817299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong 2917299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong .section .text 3017299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong .global pred_lt4_asm 3117299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong .extern inter4_2 3217299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong 3317299ab50ceb70d904e610e3b2d7fb2361a11e03James Dongpred_lt4_asm: 3417299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong 3517299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong STMFD r13!, {r4 - r12, r14} 3617299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong SUB r4, r0, r1, LSL #1 @ x = exc - T0 3717299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong RSB r2, r2, #0 @ frac = - frac 3817299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong SUB r4, r4, #30 @ x -= L_INTERPOL2 - 1 3917299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong CMP r2, #0 4017299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong ADDLT r2, r2, #4 @ frac += UP_SAMP 4117299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong SUBLT r4, r4, #2 @ x-- 4217299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong 4317299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong LDR r11, Lable1 4417299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong RSB r2, r2, #3 @ k = UP_SAMP - 1 - frac 4517299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong MOV r8, #0 @ j = 0 4617299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong ADD r11, r11, r2, LSL #6 @ get inter4_2[k][] 4717299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong 4817299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong VLD1.S16 {Q0, Q1}, [r11]! 4917299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong VLD1.S16 {Q2, Q3}, [r11]! 5017299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong 5117299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong MOV r6, #0x8000 5217299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong 5317299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong VLD1.S16 {Q4, Q5}, [r4]! @load 16 x[] 5417299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong VLD1.S16 {Q6, Q7}, [r4]! @load 16 x[] 5517299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong 5617299ab50ceb70d904e610e3b2d7fb2361a11e03James DongLOOP: 5717299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong VQDMULL.S16 Q15, D8, D0 5817299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong VQDMLAL.S16 Q15, D9, D1 5917299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong VQDMLAL.S16 Q15, D10, D2 6017299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong VQDMLAL.S16 Q15, D11, D3 6117299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong 6217299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong VQDMLAL.S16 Q15, D12, D4 6317299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong VQDMLAL.S16 Q15, D13, D5 6417299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong VQDMLAL.S16 Q15, D14, D6 6517299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong VQDMLAL.S16 Q15, D15, D7 6617299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong 6717299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong LDRSH r12, [r4], #2 6817299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong 6917299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong VEXT.S16 D8, D8, D9, #1 7017299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong VEXT.S16 D9, D9, D10, #1 7117299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong VEXT.S16 D10, D10, D11, #1 7217299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong VEXT.S16 D11, D11, D12, #1 7317299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong VDUP.S16 D24, r12 7417299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong VEXT.S16 D12, D12, D13, #1 7517299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong VEXT.S16 D13, D13, D14, #1 7617299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong 7717299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong VQADD.S32 D30, D30, D31 7817299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong MOV r11, #0x8000 7917299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong VPADD.S32 D30, D30, D30 8017299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong ADD r8, r8, #1 8117299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong VMOV.S32 r12, D30[0] 8217299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong VEXT.S16 D14, D14, D15, #1 8317299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong 8417299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong QADD r1, r12, r12 @ L_sum = (L_sum << 2) 8517299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong VEXT.S16 D15, D15, D24, #1 8617299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong QADD r5, r1, r6 8717299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong MOV r1, r5, ASR #16 8817299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong CMP r8, r3 8917299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong STRH r1, [r0], #2 @ exc[j] = (L_sum + 0x8000) >> 16 9017299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong BLT LOOP 9117299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong 9217299ab50ceb70d904e610e3b2d7fb2361a11e03James Dongpred_lt4_end: 9317299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong 9417299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong LDMFD r13!, {r4 - r12, r15} 9517299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong 9617299ab50ceb70d904e610e3b2d7fb2361a11e03James DongLable1: 9717299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong .word inter4_2 9817299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong @ENDFUNC 9917299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong .END 10017299ab50ceb70d904e610e3b2d7fb2361a11e03James Dong 101