50 lines
1.3 KiB
NASM
50 lines
1.3 KiB
NASM
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;
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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_dc_only_idct_add_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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;void vp8_dc_only_idct_add_neon(short input_dc, unsigned char *pred_ptr,
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; unsigned char *dst_ptr, int pitch, int stride)
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; r0 input_dc
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; r1 pred_ptr
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; r2 dst_ptr
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; r3 pitch
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; sp stride
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|vp8_dc_only_idct_add_neon| PROC
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add r0, r0, #4
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asr r0, r0, #3
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ldr r12, [sp]
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vdup.16 q0, r0
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vld1.32 {d2[0]}, [r1], r3
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vld1.32 {d2[1]}, [r1], r3
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vld1.32 {d4[0]}, [r1], r3
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vld1.32 {d4[1]}, [r1]
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vaddw.u8 q1, q0, d2
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vaddw.u8 q2, q0, d4
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vqmovun.s16 d2, q1
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vqmovun.s16 d4, q2
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vst1.32 {d2[0]}, [r2], r12
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vst1.32 {d2[1]}, [r2], r12
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vst1.32 {d4[0]}, [r2], r12
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vst1.32 {d4[1]}, [r2]
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bx lr
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ENDP
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END
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