70 lines
2.0 KiB
NASM
70 lines
2.0 KiB
NASM
;
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; Copyright (c) 2010 The WebM 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_recon4b_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_recon4b_neon| PROC
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vld1.u8 {q12, q13}, [r0]! ;load data from pred_ptr
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vld1.16 {q8, q9}, [r1]! ;load data from diff_ptr
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vld1.u8 {q14, q15}, [r0]
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vld1.16 {q10, q11}, [r1]!
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vmovl.u8 q0, d24 ;modify Pred data from 8 bits to 16 bits
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vmovl.u8 q1, d25
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vmovl.u8 q2, d26
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vmovl.u8 q3, d27
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vmovl.u8 q4, d28
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vmovl.u8 q5, d29
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vmovl.u8 q6, d30
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vld1.16 {q12, q13}, [r1]!
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vmovl.u8 q7, d31
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vld1.16 {q14, q15}, [r1]
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vadd.s16 q0, q0, q8 ;add Diff data and Pred data together
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vadd.s16 q1, q1, q9
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vadd.s16 q2, q2, q10
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vadd.s16 q3, q3, q11
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vadd.s16 q4, q4, q12
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vadd.s16 q5, q5, q13
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vadd.s16 q6, q6, q14
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vadd.s16 q7, q7, q15
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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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vqmovun.s16 d4, q4
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vqmovun.s16 d5, q5
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vqmovun.s16 d6, q6
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vqmovun.s16 d7, q7
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add r0, r2, r3
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vst1.u8 {q0}, [r2] ;store result
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vst1.u8 {q1}, [r0], r3
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add r2, r0, r3
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vst1.u8 {q2}, [r0]
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vst1.u8 {q3}, [r2], r3
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bx lr
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ENDP
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END
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