54 lines
1.4 KiB
NASM
54 lines
1.4 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 and patent
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; grant that can be found in the LICENSE file in the root of the source
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; tree. All contributing project authors may be found in the AUTHORS
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; file in the root of the source tree.
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;
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EXPORT |vp8_recon2b_neon|
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ARM
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REQUIRE8
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PRESERVE8
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AREA ||.text||, CODE, READONLY, ALIGN=2
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; r0 unsigned char *pred_ptr,
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; r1 short *diff_ptr,
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; r2 unsigned char *dst_ptr,
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; r3 int stride
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|vp8_recon2b_neon| PROC
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vld1.u8 {q8, q9}, [r0] ;load data from pred_ptr
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vld1.16 {q4, q5}, [r1]! ;load data from diff_ptr
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vmovl.u8 q0, d16 ;modify Pred data from 8 bits to 16 bits
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vld1.16 {q6, q7}, [r1]!
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vmovl.u8 q1, d17
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vmovl.u8 q2, d18
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vmovl.u8 q3, d19
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vadd.s16 q0, q0, q4 ;add Diff data and Pred data together
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vadd.s16 q1, q1, q5
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vadd.s16 q2, q2, q6
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vadd.s16 q3, q3, q7
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vqmovun.s16 d0, q0 ;CLAMP() saturation
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vqmovun.s16 d1, q1
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vqmovun.s16 d2, q2
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vqmovun.s16 d3, q3
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add r0, r2, r3
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vst1.u8 {d0}, [r2] ;store result
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vst1.u8 {d1}, [r0], r3
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add r2, r0, r3
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vst1.u8 {d2}, [r0]
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vst1.u8 {d3}, [r2], r3
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bx lr
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ENDP
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END
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