| ; |
| ; Copyright (c) 2010 The WebM project authors. All Rights Reserved. |
| ; |
| ; Use of this source code is governed by a BSD-style license |
| ; that can be found in the LICENSE file in the root of the source |
| ; tree. An additional intellectual property rights grant can be found |
| ; in the file PATENTS. All contributing project authors may |
| ; be found in the AUTHORS file in the root of the source tree. |
| ; |
| |
| |
| EXPORT |vp8_dequant_idct_add_neon| |
| ARM |
| REQUIRE8 |
| PRESERVE8 |
| |
| AREA ||.text||, CODE, READONLY, ALIGN=2 |
| ;void vp8_dequant_idct_neon(short *input, short *dq, unsigned char *pred, |
| ; unsigned char *dest, int pitch, int stride) |
| ; r0 short *input, |
| ; r1 short *dq, |
| ; r2 unsigned char *pred |
| ; r3 unsigned char *dest |
| ; sp int pitch |
| ; sp+4 int stride |
| |
| |vp8_dequant_idct_add_neon| PROC |
| vld1.16 {q3, q4}, [r0] |
| vld1.16 {q5, q6}, [r1] |
| ldr r1, [sp] ; pitch |
| vld1.32 {d14[0]}, [r2], r1 |
| vld1.32 {d14[1]}, [r2], r1 |
| vld1.32 {d15[0]}, [r2], r1 |
| vld1.32 {d15[1]}, [r2] |
| |
| ldr r1, [sp, #4] ; stride |
| |
| adr r12, _CONSTANTS_ |
| |
| vmul.i16 q1, q3, q5 ;input for short_idct4x4llm_neon |
| vmul.i16 q2, q4, q6 |
| |
| ;|short_idct4x4llm_neon| PROC |
| vld1.16 {d0}, [r12] |
| vswp d3, d4 ;q2(vp[4] vp[12]) |
| |
| vqdmulh.s16 q3, q2, d0[2] |
| vqdmulh.s16 q4, q2, d0[0] |
| |
| vqadd.s16 d12, d2, d3 ;a1 |
| vqsub.s16 d13, d2, d3 ;b1 |
| |
| vshr.s16 q3, q3, #1 |
| vshr.s16 q4, q4, #1 |
| |
| vqadd.s16 q3, q3, q2 |
| vqadd.s16 q4, q4, q2 |
| |
| vqsub.s16 d10, d6, d9 ;c1 |
| vqadd.s16 d11, d7, d8 ;d1 |
| |
| vqadd.s16 d2, d12, d11 |
| vqadd.s16 d3, d13, d10 |
| vqsub.s16 d4, d13, d10 |
| vqsub.s16 d5, d12, d11 |
| |
| vtrn.32 d2, d4 |
| vtrn.32 d3, d5 |
| vtrn.16 d2, d3 |
| vtrn.16 d4, d5 |
| |
| ; memset(input, 0, 32) -- 32bytes |
| vmov.i16 q14, #0 |
| |
| vswp d3, d4 |
| vqdmulh.s16 q3, q2, d0[2] |
| vqdmulh.s16 q4, q2, d0[0] |
| |
| vqadd.s16 d12, d2, d3 ;a1 |
| vqsub.s16 d13, d2, d3 ;b1 |
| |
| vmov q15, q14 |
| |
| vshr.s16 q3, q3, #1 |
| vshr.s16 q4, q4, #1 |
| |
| vqadd.s16 q3, q3, q2 |
| vqadd.s16 q4, q4, q2 |
| |
| vqsub.s16 d10, d6, d9 ;c1 |
| vqadd.s16 d11, d7, d8 ;d1 |
| |
| vqadd.s16 d2, d12, d11 |
| vqadd.s16 d3, d13, d10 |
| vqsub.s16 d4, d13, d10 |
| vqsub.s16 d5, d12, d11 |
| |
| vst1.16 {q14, q15}, [r0] |
| |
| vrshr.s16 d2, d2, #3 |
| vrshr.s16 d3, d3, #3 |
| vrshr.s16 d4, d4, #3 |
| vrshr.s16 d5, d5, #3 |
| |
| vtrn.32 d2, d4 |
| vtrn.32 d3, d5 |
| vtrn.16 d2, d3 |
| vtrn.16 d4, d5 |
| |
| vaddw.u8 q1, q1, d14 |
| vaddw.u8 q2, q2, d15 |
| |
| vqmovun.s16 d0, q1 |
| vqmovun.s16 d1, q2 |
| |
| vst1.32 {d0[0]}, [r3], r1 |
| vst1.32 {d0[1]}, [r3], r1 |
| vst1.32 {d1[0]}, [r3], r1 |
| vst1.32 {d1[1]}, [r3] |
| |
| bx lr |
| |
| ENDP ; |vp8_dequant_idct_add_neon| |
| |
| ; Constant Pool |
| _CONSTANTS_ |
| cospi8sqrt2minus1 DCD 0x4e7b4e7b |
| sinpi8sqrt2 DCD 0x8a8c8a8c |
| |
| END |
