diff options
Diffstat (limited to 'third_party/aom/aom_dsp/arm/idct8x8_1_add_neon_asm.asm')
| -rw-r--r-- | third_party/aom/aom_dsp/arm/idct8x8_1_add_neon_asm.asm | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/third_party/aom/aom_dsp/arm/idct8x8_1_add_neon_asm.asm b/third_party/aom/aom_dsp/arm/idct8x8_1_add_neon_asm.asm new file mode 100644 index 000000000..ec07e2053 --- /dev/null +++ b/third_party/aom/aom_dsp/arm/idct8x8_1_add_neon_asm.asm @@ -0,0 +1,91 @@ +; +; Copyright (c) 2016, Alliance for Open Media. All rights reserved +; +; This source code is subject to the terms of the BSD 2 Clause License and +; the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License +; was not distributed with this source code in the LICENSE file, you can +; obtain it at www.aomedia.org/license/software. If the Alliance for Open +; Media Patent License 1.0 was not distributed with this source code in the +; PATENTS file, you can obtain it at www.aomedia.org/license/patent. +; + + + + EXPORT |aom_idct8x8_1_add_neon| + ARM + REQUIRE8 + PRESERVE8 + + AREA ||.text||, CODE, READONLY, ALIGN=2 + +;void aom_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) + +|aom_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 ; |aom_idct8x8_1_add_neon| + + END |