53 lines
1.1 KiB
NASM
53 lines
1.1 KiB
NASM
;
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; Copyright (c) 2010 The VP8 project authors. All Rights Reserved.
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;
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; Use of this source code is governed by a BSD-style license
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; that can be found in the LICENSE file in the root of the source
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; tree. An additional intellectual property rights grant can be found
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; in the file PATENTS. All contributing project authors may
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; be found in the AUTHORS file in the root of the source tree.
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;
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EXPORT |vp8_dequantize_b_armv5|
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AREA |.text|, CODE, READONLY ; name this block of code
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q RN r0
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dqc RN r1
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cnt RN r2
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;void dequantize_b_armv5(short *Q, short *DQC)
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|vp8_dequantize_b_armv5| PROC
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stmdb sp!, {r4, lr}
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ldr r3, [q]
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ldr r4, [dqc], #8
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mov cnt, #4
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dequant_loop
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smulbb lr, r3, r4
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smultt r12, r3, r4
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ldr r3, [q, #4]
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ldr r4, [dqc, #-4]
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strh lr, [q], #2
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strh r12, [q], #2
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smulbb lr, r3, r4
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smultt r12, r3, r4
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subs cnt, cnt, #1
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ldrne r3, [q, #4]
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ldrne r4, [dqc], #8
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strh lr, [q], #2
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strh r12, [q], #2
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bne dequant_loop
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ldmia sp!, {r4, pc}
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ENDP ;|vp8_dequantize_b_arm|
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END
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