diff options
Diffstat (limited to 'media/libstagefright/codecs/amrwbenc/src/asm/ARMV5E/scale_sig_opt.s')
| -rw-r--r-- | media/libstagefright/codecs/amrwbenc/src/asm/ARMV5E/scale_sig_opt.s | 150 |
1 files changed, 75 insertions, 75 deletions
diff --git a/media/libstagefright/codecs/amrwbenc/src/asm/ARMV5E/scale_sig_opt.s b/media/libstagefright/codecs/amrwbenc/src/asm/ARMV5E/scale_sig_opt.s index aa9f464..f83e688 100644 --- a/media/libstagefright/codecs/amrwbenc/src/asm/ARMV5E/scale_sig_opt.s +++ b/media/libstagefright/codecs/amrwbenc/src/asm/ARMV5E/scale_sig_opt.s @@ -1,75 +1,75 @@ -@/*
-@ ** 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 Scale_sig(
-@ Word16 x[], /* (i/o) : signal to scale */
-@ Word16 lg, /* (i) : size of x[] */
-@ Word16 exp /* (i) : exponent: x = round(x << exp) */
-@ )
-@
-@r0 --- x[]
-@r1 --- lg
-@r2 --- exp
-
- .section .text
- .global Scale_sig_opt
-
-Scale_sig_opt:
-
- STMFD r13!, {r4 - r12, r14}
- SUB r3, r1, #1 @i = lg - 1
- CMP r2, #0 @Compare exp and 0
- RSB r7, r2, #0 @exp = -exp
- ADD r10, r2, #16 @16 + exp
- ADD r4, r0, r3, LSL #1 @x[i] address
- MOV r8, #0x7fffffff
- MOV r9, #0x8000
- BLE LOOP2
-
-LOOP1:
-
- LDRSH r5, [r4] @load x[i]
- MOV r12, r5, LSL r10
- TEQ r5, r12, ASR r10
- EORNE r12, r8, r5, ASR #31
- SUBS r3, r3, #1
- QADD r11, r12, r9
- MOV r12, r11, ASR #16
- STRH r12, [r4], #-2
- BGE LOOP1
- BL The_end
-
-LOOP2:
-
- LDRSH r5, [r4] @load x[i]
- MOV r6, r5, LSL #16 @L_tmp = x[i] << 16
- MOV r5, r6, ASR r7 @L_tmp >>= exp
- QADD r11, r5, r9
- MOV r12, r11, ASR #16
- SUBS r3, r3, #1
- STRH r12, [r4], #-2
- BGE LOOP2
-
-The_end:
- LDMFD r13!, {r4 - r12, r15}
-
- @ENDFUNC
- .END
-
-
-
-
-
+@/* +@ ** 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 Scale_sig( +@ Word16 x[], /* (i/o) : signal to scale */ +@ Word16 lg, /* (i) : size of x[] */ +@ Word16 exp /* (i) : exponent: x = round(x << exp) */ +@ ) +@ +@r0 --- x[] +@r1 --- lg +@r2 --- exp + + .section .text + .global Scale_sig_opt + +Scale_sig_opt: + + STMFD r13!, {r4 - r12, r14} + SUB r3, r1, #1 @i = lg - 1 + CMP r2, #0 @Compare exp and 0 + RSB r7, r2, #0 @exp = -exp + ADD r10, r2, #16 @16 + exp + ADD r4, r0, r3, LSL #1 @x[i] address + MOV r8, #0x7fffffff + MOV r9, #0x8000 + BLE LOOP2 + +LOOP1: + + LDRSH r5, [r4] @load x[i] + MOV r12, r5, LSL r10 + TEQ r5, r12, ASR r10 + EORNE r12, r8, r5, ASR #31 + SUBS r3, r3, #1 + QADD r11, r12, r9 + MOV r12, r11, ASR #16 + STRH r12, [r4], #-2 + BGE LOOP1 + BL The_end + +LOOP2: + + LDRSH r5, [r4] @load x[i] + MOV r6, r5, LSL #16 @L_tmp = x[i] << 16 + MOV r5, r6, ASR r7 @L_tmp >>= exp + QADD r11, r5, r9 + MOV r12, r11, ASR #16 + SUBS r3, r3, #1 + STRH r12, [r4], #-2 + BGE LOOP2 + +The_end: + LDMFD r13!, {r4 - r12, r15} + + @ENDFUNC + .END + + + + + |