@/* @ ** Copyright 2003-2010, VisualOn, Inc. @ ** @ ** 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. @ */ @ @void Residu( @ Word16 a[], /* (i) Q12 : prediction coefficients */ @ Word16 x[], /* (i) : speech (values x[-m..-1] are needed */ @ Word16 y[], /* (o) x2 : residual signal */ @ Word16 lg /* (i) : size of filtering */ @ ) @a[] --- r0 @x[] --- r1 @y[] --- r2 @lg --- r3 .section .text .global Residu_opt Residu_opt: STMFD r13!, {r4 - r12, r14} LDRH r5, [r0], #2 LDRH r6, [r0], #2 ORR r5, r6, r5, LSL #16 @r5 --- a0, a1 LDRH r6, [r0], #2 LDRH r7, [r0], #2 ORR r6, r7, r6, LSL #16 @r6 --- a2, a3 LDRH r7, [r0], #2 LDRH r8, [r0], #2 ORR r7, r8, r7, LSL #16 @r7 --- a4, a5 LDRH r8, [r0], #2 LDRH r9, [r0], #2 ORR r8, r9, r8, LSL #16 @r8 --- a6, a7 LDRH r9, [r0], #2 LDRH r10, [r0], #2 ORR r9, r10, r9, LSL #16 @r9 --- a8, a9 LDRH r10, [r0], #2 LDRH r11, [r0], #2 ORR r10, r11, r10, LSL #16 @r10 --- a10, a11 LDRH r11, [r0], #2 LDRH r12, [r0], #2 ORR r11, r12, r11, LSL #16 @r11 --- a12, a13 LDRH r12, [r0], #2 LDRH r4, [r0], #2 ORR r12, r4, r12, LSL #16 @r12 --- a14, a15 STMFD r13!, {r8 - r12} @store r8-r12 LDRH r4, [r0], #2 @load a16 MOV r14, r3, ASR #2 @one loop get 4 outputs ADD r1, r1, #4 MOV r0, r2 ORR r14, r4, r14, LSL #16 @r14 --- loopnum, a16 residu_loop: LDR r10, [r1], #-4 @r10 --- x[3], x[2] LDR r2, [r1], #-4 @r2 --- x[1], x[0] SMULTB r3, r5, r2 @i1(0) --- r3 = x[0] * a0 SMULTT r4, r5, r2 @i2(0) --- r4 = x[1] * a0 SMULTB r11, r5, r10 @i3(0) --- r11 = x[2] * a0 SMULTT r12, r5, r10 @i4(0) --- r12 = x[3] * a0 SMLABB r4, r5, r2, r4 @i2(1) --- r4 += x[0] * a1 SMLABT r11, r5, r2, r11 @i3(1) --- r11 += x[1] * a0 SMLABB r12, r5, r10, r12 @i4(1) --- r12 += x[2] * a1 SMLATB r11, r6, r2, r11 @i3(2) --- r11 += x[0] * a2 SMLATT r12, r6, r2, r12 @i4(2) --- r12 += x[1] * a2 SMLABB r12, r6, r2, r12 @i4(3) --- r12 += x[0] * a3 LDR r2, [r1], #-4 @r2 ---- x[-1], x[-2] SMLABT r3, r5, r2, r3 @i1(1) --- r3 += x[-1] * a1 SMLATT r4, r6, r2, r4 @i2(2) --- r4 += x[-1] * a2 SMLABT r11, r6, r2, r11 @i3(3) --- r11 += x[-1] * a3 SMLATT r12, r7, r2, r12 @i4(4) --- r12 += x[-1] * a4 SMLATB r3, r6, r2, r3 @i1(2) --- r3 += x[-2] * a2 SMLABB r4, r6, r2, r4 @ i2 (3) SMLATB r11,r7, r2, r11 @ i3 (4) SMLABB r12,r7, r2, r12 @ i4 (5) LDR r2,[r1],#-4 SMLABT r3, r6, r2, r3 @ i1 (3) SMLATT r4, r7, r2, r4 @ i2 (4) SMLABT r11,r7, r2, r11 @ i3 (5) SMLATT r12,r8, r2, r12 @ i4 (6) SMLATB r3, r7, r2, r3 @ i1 (4) SMLABB r4, r7, r2, r4 @ i2 (5) SMLATB r11,r8, r2, r11 @ i3 (6) SMLABB r12,r8, r2, r12 @ i4 (7) LDR r2,[r1],#-4 SMLABT r3, r7, r2, r3 @ i1 (5) SMLATT r4, r8, r2, r4 @ i2 (6) SMLABT r11,r8, r2, r11 @ i3 (7) SMLATT r12,r9, r2, r12 @ i4 (8) SMLATB r3, r8, r2, r3 @ i1 (6) SMLABB r4, r8, r2, r4 @ i2 (7) SMLATB r11,r9, r2, r11 @ i3 (8) SMLABB r12,r9, r2, r12 @ i4 (9) LDR r10, [r13, #8] @ [ a10 | a11] LDR r2,[r1],#-4 SMLABT r3, r8, r2, r3 @ i1 (7) SMLATT r4, r9, r2, r4 @ i2 (8) SMLABT r11,r9, r2, r11 @ i3 (9) SMLATT r12,r10, r2, r12 @ i4 (10) SMLATB r3, r9, r2, r3 @ i1 (8) SMLABB r4, r9, r2, r4 @ i2 (9) SMLATB r11,r10, r2, r11 @ i3 (10) SMLABB r12,r10, r2, r12 @ i4 (11) LDR r8, [r13, #12] @ [ a12 | a13 ] LDR r2,[r1],#-4 SMLABT r3, r9, r2, r3 @ i1 (9) SMLATT r4, r10, r2, r4 @ i2 (10) SMLABT r11,r10, r2, r11 @ i3 (11) SMLATT r12,r8, r2, r12 @ i4 (12) SMLATB r3, r10, r2, r3 @ i1 (10) SMLABB r4, r10, r2, r4 @ i2 (11) SMLATB r11,r8, r2, r11 @ i3 (12) SMLABB r12,r8, r2, r12 @ i4 (13) LDR r9, [r13, #16] @ [ a14 | a15 ] LDR r2,[r1],#-4 SMLABT r3, r10, r2, r3 @ i1 (11) SMLATT r4, r8, r2, r4 @ i2 (12) SMLABT r11,r8, r2, r11 @ i3 (13) SMLATT r12,r9, r2, r12 @ i4 (14) SMLATB r3, r8, r2, r3 @ i1 (12) SMLABB r4, r8, r2, r4 @ i2 (13) SMLATB r11,r9, r2, r11 @ i3 (14) SMLABB r12,r9, r2, r12 @ i4 (15) LDR r2,[r1],#-4 SMLABT r3, r8, r2, r3 @ i1 (13) SMLATT r4, r9, r2, r4 @ i2 (14) SMLABT r11,r9, r2, r11 @ i3 (15) SMLABT r12,r14, r2, r12 @ i4 (16) SMLATB r3, r9, r2, r3 @ i1 (14) SMLABB r4, r9, r2, r4 @ i2 (15) SMLABB r11,r14, r2, r11 @ i3 (16) LDR r8, [r13] @ [ a6 | a7 ] LDR r2,[r1],#44 @ Change SMLABT r3, r9, r2, r3 SMLABB r3, r14, r2, r3 SMLABT r4, r14, r2, r4 LDR r9, [r13, #4] @ [ a8 | a9 ] QADD r3,r3,r3 QADD r4,r4,r4 QADD r11,r11,r11 QADD r12,r12,r12 QADD r3,r3,r3 QADD r4,r4,r4 QADD r11,r11,r11 QADD r12,r12,r12 QADD r3,r3,r3 QADD r4,r4,r4 QADD r11,r11,r11 QADD r12,r12,r12 QADD r3,r3,r3 QADD r4,r4,r4 QADD r11,r11,r11 QADD r12,r12,r12 MOV r2,#32768 QDADD r3,r2,r3 QDADD r4,r2,r4 QDADD r11,r2,r11 QDADD r12,r2,r12 MOV r3,r3,asr #16 MOV r4,r4,asr #16 MOV r11,r11,asr #16 MOV r12,r12,asr #16 STRH r3,[r0],#2 STRH r4,[r0],#2 STRH r11,[r0],#2 STRH r12,[r0],#2 MOV r2,r14,asr #16 SUB r14, r14, #0x10000 SUBS r2,r2,#1 BNE residu_loop end: LDMFD r13!, {r8 -r12} LDMFD r13!, {r4 -r12,pc} @ENDFUNC .end