; ; Copyright (c) 2013 The WebM project authors. All Rights Reserved. ; ; Use of this source code is governed by a BSD-style license and patent ; grant that can be found in the LICENSE file in the root of the source ; tree. All contributing project authors may be found in the AUTHORS ; file in the root of the source tree. ; EXPORT |vp9_idct8x8_1_add_neon| ARM REQUIRE8 PRESERVE8 AREA ||.text||, CODE, READONLY, ALIGN=2 ;void vp9_idct8x8_1_add_neon(int16_t *input, uint8_t *dest, ; int dest_stride) ; ; r0 int16_t input ; r1 uint8_t *dest ; r2 int dest_stride) |vp9_idct8x8_1_add_neon| PROC ldrsh r0, [r0] ; generate cospi_16_64 = 11585 mov r12, #0x2d00 add r12, #0x41 ; out = dct_const_round_shift(input[0] * cospi_16_64) mul r0, r0, r12 ; input[0] * cospi_16_64 add r0, r0, #0x2000 ; +(1 << ((DCT_CONST_BITS) - 1)) asr r0, r0, #14 ; >> DCT_CONST_BITS ; out = dct_const_round_shift(out * cospi_16_64) mul r0, r0, r12 ; out * cospi_16_64 mov r12, r1 ; save dest add r0, r0, #0x2000 ; +(1 << ((DCT_CONST_BITS) - 1)) asr r0, r0, #14 ; >> DCT_CONST_BITS ; a1 = ROUND_POWER_OF_TWO(out, 5) add r0, r0, #16 ; + (1 <<((5) - 1)) asr r0, r0, #5 ; >> 5 vdup.s16 q0, r0 ; duplicate a1 ; load destination data vld1.64 {d2}, [r1], r2 vld1.64 {d3}, [r1], r2 vld1.64 {d4}, [r1], r2 vld1.64 {d5}, [r1], r2 vld1.64 {d6}, [r1], r2 vld1.64 {d7}, [r1], r2 vld1.64 {d16}, [r1], r2 vld1.64 {d17}, [r1] vaddw.u8 q9, q0, d2 ; dest[x] + a1 vaddw.u8 q10, q0, d3 ; dest[x] + a1 vaddw.u8 q11, q0, d4 ; dest[x] + a1 vaddw.u8 q12, q0, d5 ; dest[x] + a1 vqmovun.s16 d2, q9 ; clip_pixel vqmovun.s16 d3, q10 ; clip_pixel vqmovun.s16 d30, q11 ; clip_pixel vqmovun.s16 d31, q12 ; clip_pixel vst1.64 {d2}, [r12], r2 vst1.64 {d3}, [r12], r2 vst1.64 {d30}, [r12], r2 vst1.64 {d31}, [r12], r2 vaddw.u8 q9, q0, d6 ; dest[x] + a1 vaddw.u8 q10, q0, d7 ; dest[x] + a1 vaddw.u8 q11, q0, d16 ; dest[x] + a1 vaddw.u8 q12, q0, d17 ; dest[x] + a1 vqmovun.s16 d2, q9 ; clip_pixel vqmovun.s16 d3, q10 ; clip_pixel vqmovun.s16 d30, q11 ; clip_pixel vqmovun.s16 d31, q12 ; clip_pixel vst1.64 {d2}, [r12], r2 vst1.64 {d3}, [r12], r2 vst1.64 {d30}, [r12], r2 vst1.64 {d31}, [r12], r2 bx lr ENDP ; |vp9_idct8x8_1_add_neon| END