1 ; 2 ; Copyright (c) 2010 The WebM project authors. All Rights Reserved. 3 ; 4 ; Use of this source code is governed by a BSD-style license 5 ; that can be found in the LICENSE file in the root of the source 6 ; tree. An additional intellectual property rights grant can be found 7 ; in the file PATENTS. All contributing project authors may 8 ; be found in the AUTHORS file in the root of the source tree. 9 ; 10 11 12 EXPORT |vp8_dequantize_b_loop_v6| 13 14 AREA |.text|, CODE, READONLY ; name this block of code 15 ;------------------------------- 16 ;void vp8_dequantize_b_loop_v6(short *Q, short *DQC, short *DQ); 17 ; r0 short *Q, 18 ; r1 short *DQC 19 ; r2 short *DQ 20 |vp8_dequantize_b_loop_v6| PROC 21 stmdb sp!, {r4-r9, lr} 22 23 ldr r3, [r0] ;load Q 24 ldr r4, [r1] ;load DQC 25 ldr r5, [r0, #4] 26 ldr r6, [r1, #4] 27 28 mov r12, #2 ;loop counter 29 30 dequant_loop 31 smulbb r7, r3, r4 ;multiply 32 smultt r8, r3, r4 33 smulbb r9, r5, r6 34 smultt lr, r5, r6 35 36 ldr r3, [r0, #8] 37 ldr r4, [r1, #8] 38 ldr r5, [r0, #12] 39 ldr r6, [r1, #12] 40 41 strh r7, [r2], #2 ;store result 42 smulbb r7, r3, r4 ;multiply 43 strh r8, [r2], #2 44 smultt r8, r3, r4 45 strh r9, [r2], #2 46 smulbb r9, r5, r6 47 strh lr, [r2], #2 48 smultt lr, r5, r6 49 50 subs r12, r12, #1 51 52 add r0, r0, #16 53 add r1, r1, #16 54 55 ldrne r3, [r0] 56 strh r7, [r2], #2 ;store result 57 ldrne r4, [r1] 58 strh r8, [r2], #2 59 ldrne r5, [r0, #4] 60 strh r9, [r2], #2 61 ldrne r6, [r1, #4] 62 strh lr, [r2], #2 63 64 bne dequant_loop 65 66 ldmia sp!, {r4-r9, pc} 67 ENDP ;|vp8_dequantize_b_loop_v6| 68 69 END 70
