c2140b8af1
Changes 'The VP8 project' to 'The WebM project', for consistency with other webmproject.org repositories. Fixes issue #97. Change-Id: I37c13ed5fbdb9d334ceef71c6350e9febed9bbba
131 lines
3.4 KiB
NASM
131 lines
3.4 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_dequant_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_dequant_idct_neon(short *input, short *dq, unsigned char *pred,
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; unsigned char *dest, int pitch, int stride)
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; r0 short *input,
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; r1 short *dq,
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; r2 unsigned char *pred
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; r3 unsigned char *dest
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; sp int pitch
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; sp+4 int stride
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|vp8_dequant_idct_add_neon| PROC
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vld1.16 {q3, q4}, [r0]
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vld1.16 {q5, q6}, [r1]
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ldr r1, [sp] ; pitch
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vld1.32 {d14[0]}, [r2], r1
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vld1.32 {d14[1]}, [r2], r1
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vld1.32 {d15[0]}, [r2], r1
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vld1.32 {d15[1]}, [r2]
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ldr r1, [sp, #4] ; stride
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ldr r12, _CONSTANTS_
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vmul.i16 q1, q3, q5 ;input for short_idct4x4llm_neon
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vmul.i16 q2, q4, q6
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;|short_idct4x4llm_neon| PROC
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vld1.16 {d0}, [r12]
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vswp d3, d4 ;q2(vp[4] vp[12])
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vqdmulh.s16 q3, q2, d0[2]
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vqdmulh.s16 q4, q2, d0[0]
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vqadd.s16 d12, d2, d3 ;a1
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vqsub.s16 d13, d2, d3 ;b1
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vshr.s16 q3, q3, #1
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vshr.s16 q4, q4, #1
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vqadd.s16 q3, q3, q2
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vqadd.s16 q4, q4, q2
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vqsub.s16 d10, d6, d9 ;c1
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vqadd.s16 d11, d7, d8 ;d1
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vqadd.s16 d2, d12, d11
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vqadd.s16 d3, d13, d10
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vqsub.s16 d4, d13, d10
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vqsub.s16 d5, d12, d11
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vtrn.32 d2, d4
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vtrn.32 d3, d5
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vtrn.16 d2, d3
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vtrn.16 d4, d5
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; memset(input, 0, 32) -- 32bytes
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vmov.i16 q14, #0
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vswp d3, d4
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vqdmulh.s16 q3, q2, d0[2]
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vqdmulh.s16 q4, q2, d0[0]
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vqadd.s16 d12, d2, d3 ;a1
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vqsub.s16 d13, d2, d3 ;b1
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vmov q15, q14
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vshr.s16 q3, q3, #1
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vshr.s16 q4, q4, #1
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vqadd.s16 q3, q3, q2
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vqadd.s16 q4, q4, q2
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vqsub.s16 d10, d6, d9 ;c1
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vqadd.s16 d11, d7, d8 ;d1
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vqadd.s16 d2, d12, d11
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vqadd.s16 d3, d13, d10
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vqsub.s16 d4, d13, d10
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vqsub.s16 d5, d12, d11
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vst1.16 {q14, q15}, [r0]
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vrshr.s16 d2, d2, #3
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vrshr.s16 d3, d3, #3
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vrshr.s16 d4, d4, #3
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vrshr.s16 d5, d5, #3
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vtrn.32 d2, d4
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vtrn.32 d3, d5
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vtrn.16 d2, d3
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vtrn.16 d4, d5
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vaddw.u8 q1, q1, d14
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vaddw.u8 q2, q2, d15
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vqmovun.s16 d0, q1
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vqmovun.s16 d1, q2
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vst1.32 {d0[0]}, [r3], r1
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vst1.32 {d0[1]}, [r3], r1
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vst1.32 {d1[0]}, [r3], r1
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vst1.32 {d1[1]}, [r3]
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bx lr
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ENDP ; |vp8_dequant_idct_add_neon|
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; Constant Pool
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_CONSTANTS_ DCD cospi8sqrt2minus1
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cospi8sqrt2minus1 DCD 0x4e7b4e7b
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sinpi8sqrt2 DCD 0x8a8c8a8c
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END
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