| /* |
| * Copyright (c) 2014 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. |
| */ |
| |
| #include <arm_neon.h> |
| |
| #include "./vp8_rtcd.h" |
| |
| void vp8_short_fdct4x4_neon(int16_t *input, int16_t *output, int pitch) { |
| int16x4_t d0s16, d1s16, d2s16, d3s16, d4s16, d5s16, d6s16, d7s16; |
| int16x4_t d16s16, d17s16, d26s16, dEmptys16; |
| uint16x4_t d4u16; |
| int16x8_t q0s16, q1s16; |
| int32x4_t q9s32, q10s32, q11s32, q12s32; |
| int16x4x2_t v2tmp0, v2tmp1; |
| int32x2x2_t v2tmp2, v2tmp3; |
| |
| d16s16 = vdup_n_s16(5352); |
| d17s16 = vdup_n_s16(2217); |
| q9s32 = vdupq_n_s32(14500); |
| q10s32 = vdupq_n_s32(7500); |
| q11s32 = vdupq_n_s32(12000); |
| q12s32 = vdupq_n_s32(51000); |
| |
| // Part one |
| pitch >>= 1; |
| d0s16 = vld1_s16(input); |
| input += pitch; |
| d1s16 = vld1_s16(input); |
| input += pitch; |
| d2s16 = vld1_s16(input); |
| input += pitch; |
| d3s16 = vld1_s16(input); |
| |
| v2tmp2 = vtrn_s32(vreinterpret_s32_s16(d0s16), vreinterpret_s32_s16(d2s16)); |
| v2tmp3 = vtrn_s32(vreinterpret_s32_s16(d1s16), vreinterpret_s32_s16(d3s16)); |
| v2tmp0 = vtrn_s16(vreinterpret_s16_s32(v2tmp2.val[0]), // d0 |
| vreinterpret_s16_s32(v2tmp3.val[0])); // d1 |
| v2tmp1 = vtrn_s16(vreinterpret_s16_s32(v2tmp2.val[1]), // d2 |
| vreinterpret_s16_s32(v2tmp3.val[1])); // d3 |
| |
| d4s16 = vadd_s16(v2tmp0.val[0], v2tmp1.val[1]); |
| d5s16 = vadd_s16(v2tmp0.val[1], v2tmp1.val[0]); |
| d6s16 = vsub_s16(v2tmp0.val[1], v2tmp1.val[0]); |
| d7s16 = vsub_s16(v2tmp0.val[0], v2tmp1.val[1]); |
| |
| d4s16 = vshl_n_s16(d4s16, 3); |
| d5s16 = vshl_n_s16(d5s16, 3); |
| d6s16 = vshl_n_s16(d6s16, 3); |
| d7s16 = vshl_n_s16(d7s16, 3); |
| |
| d0s16 = vadd_s16(d4s16, d5s16); |
| d2s16 = vsub_s16(d4s16, d5s16); |
| |
| q9s32 = vmlal_s16(q9s32, d7s16, d16s16); |
| q10s32 = vmlal_s16(q10s32, d7s16, d17s16); |
| q9s32 = vmlal_s16(q9s32, d6s16, d17s16); |
| q10s32 = vmlsl_s16(q10s32, d6s16, d16s16); |
| |
| d1s16 = vshrn_n_s32(q9s32, 12); |
| d3s16 = vshrn_n_s32(q10s32, 12); |
| |
| // Part two |
| v2tmp2 = vtrn_s32(vreinterpret_s32_s16(d0s16), vreinterpret_s32_s16(d2s16)); |
| v2tmp3 = vtrn_s32(vreinterpret_s32_s16(d1s16), vreinterpret_s32_s16(d3s16)); |
| v2tmp0 = vtrn_s16(vreinterpret_s16_s32(v2tmp2.val[0]), // d0 |
| vreinterpret_s16_s32(v2tmp3.val[0])); // d1 |
| v2tmp1 = vtrn_s16(vreinterpret_s16_s32(v2tmp2.val[1]), // d2 |
| vreinterpret_s16_s32(v2tmp3.val[1])); // d3 |
| |
| d4s16 = vadd_s16(v2tmp0.val[0], v2tmp1.val[1]); |
| d5s16 = vadd_s16(v2tmp0.val[1], v2tmp1.val[0]); |
| d6s16 = vsub_s16(v2tmp0.val[1], v2tmp1.val[0]); |
| d7s16 = vsub_s16(v2tmp0.val[0], v2tmp1.val[1]); |
| |
| d26s16 = vdup_n_s16(7); |
| d4s16 = vadd_s16(d4s16, d26s16); |
| |
| d0s16 = vadd_s16(d4s16, d5s16); |
| d2s16 = vsub_s16(d4s16, d5s16); |
| |
| q11s32 = vmlal_s16(q11s32, d7s16, d16s16); |
| q12s32 = vmlal_s16(q12s32, d7s16, d17s16); |
| |
| dEmptys16 = vdup_n_s16(0); |
| d4u16 = vceq_s16(d7s16, dEmptys16); |
| |
| d0s16 = vshr_n_s16(d0s16, 4); |
| d2s16 = vshr_n_s16(d2s16, 4); |
| |
| q11s32 = vmlal_s16(q11s32, d6s16, d17s16); |
| q12s32 = vmlsl_s16(q12s32, d6s16, d16s16); |
| |
| d4u16 = vmvn_u16(d4u16); |
| d1s16 = vshrn_n_s32(q11s32, 16); |
| d1s16 = vsub_s16(d1s16, vreinterpret_s16_u16(d4u16)); |
| d3s16 = vshrn_n_s32(q12s32, 16); |
| |
| q0s16 = vcombine_s16(d0s16, d1s16); |
| q1s16 = vcombine_s16(d2s16, d3s16); |
| |
| vst1q_s16(output, q0s16); |
| vst1q_s16(output + 8, q1s16); |
| return; |
| } |
| |
| void vp8_short_fdct8x4_neon(int16_t *input, int16_t *output, int pitch) { |
| int16x4_t d0s16, d1s16, d2s16, d3s16, d4s16, d5s16, d6s16, d7s16; |
| int16x4_t d16s16, d17s16, d26s16, d27s16, d28s16, d29s16; |
| uint16x4_t d28u16, d29u16; |
| uint16x8_t q14u16; |
| int16x8_t q0s16, q1s16, q2s16, q3s16; |
| int16x8_t q11s16, q12s16, q13s16, q14s16, q15s16, qEmptys16; |
| int32x4_t q9s32, q10s32, q11s32, q12s32; |
| int16x8x2_t v2tmp0, v2tmp1; |
| int32x4x2_t v2tmp2, v2tmp3; |
| |
| d16s16 = vdup_n_s16(5352); |
| d17s16 = vdup_n_s16(2217); |
| q9s32 = vdupq_n_s32(14500); |
| q10s32 = vdupq_n_s32(7500); |
| |
| // Part one |
| pitch >>= 1; |
| q0s16 = vld1q_s16(input); |
| input += pitch; |
| q1s16 = vld1q_s16(input); |
| input += pitch; |
| q2s16 = vld1q_s16(input); |
| input += pitch; |
| q3s16 = vld1q_s16(input); |
| |
| v2tmp2 = |
| vtrnq_s32(vreinterpretq_s32_s16(q0s16), vreinterpretq_s32_s16(q2s16)); |
| v2tmp3 = |
| vtrnq_s32(vreinterpretq_s32_s16(q1s16), vreinterpretq_s32_s16(q3s16)); |
| v2tmp0 = vtrnq_s16(vreinterpretq_s16_s32(v2tmp2.val[0]), // q0 |
| vreinterpretq_s16_s32(v2tmp3.val[0])); // q1 |
| v2tmp1 = vtrnq_s16(vreinterpretq_s16_s32(v2tmp2.val[1]), // q2 |
| vreinterpretq_s16_s32(v2tmp3.val[1])); // q3 |
| |
| q11s16 = vaddq_s16(v2tmp0.val[0], v2tmp1.val[1]); |
| q12s16 = vaddq_s16(v2tmp0.val[1], v2tmp1.val[0]); |
| q13s16 = vsubq_s16(v2tmp0.val[1], v2tmp1.val[0]); |
| q14s16 = vsubq_s16(v2tmp0.val[0], v2tmp1.val[1]); |
| |
| q11s16 = vshlq_n_s16(q11s16, 3); |
| q12s16 = vshlq_n_s16(q12s16, 3); |
| q13s16 = vshlq_n_s16(q13s16, 3); |
| q14s16 = vshlq_n_s16(q14s16, 3); |
| |
| q0s16 = vaddq_s16(q11s16, q12s16); |
| q2s16 = vsubq_s16(q11s16, q12s16); |
| |
| q11s32 = q9s32; |
| q12s32 = q10s32; |
| |
| d26s16 = vget_low_s16(q13s16); |
| d27s16 = vget_high_s16(q13s16); |
| d28s16 = vget_low_s16(q14s16); |
| d29s16 = vget_high_s16(q14s16); |
| |
| q9s32 = vmlal_s16(q9s32, d28s16, d16s16); |
| q10s32 = vmlal_s16(q10s32, d28s16, d17s16); |
| q11s32 = vmlal_s16(q11s32, d29s16, d16s16); |
| q12s32 = vmlal_s16(q12s32, d29s16, d17s16); |
| |
| q9s32 = vmlal_s16(q9s32, d26s16, d17s16); |
| q10s32 = vmlsl_s16(q10s32, d26s16, d16s16); |
| q11s32 = vmlal_s16(q11s32, d27s16, d17s16); |
| q12s32 = vmlsl_s16(q12s32, d27s16, d16s16); |
| |
| d2s16 = vshrn_n_s32(q9s32, 12); |
| d6s16 = vshrn_n_s32(q10s32, 12); |
| d3s16 = vshrn_n_s32(q11s32, 12); |
| d7s16 = vshrn_n_s32(q12s32, 12); |
| q1s16 = vcombine_s16(d2s16, d3s16); |
| q3s16 = vcombine_s16(d6s16, d7s16); |
| |
| // Part two |
| q9s32 = vdupq_n_s32(12000); |
| q10s32 = vdupq_n_s32(51000); |
| |
| v2tmp2 = |
| vtrnq_s32(vreinterpretq_s32_s16(q0s16), vreinterpretq_s32_s16(q2s16)); |
| v2tmp3 = |
| vtrnq_s32(vreinterpretq_s32_s16(q1s16), vreinterpretq_s32_s16(q3s16)); |
| v2tmp0 = vtrnq_s16(vreinterpretq_s16_s32(v2tmp2.val[0]), // q0 |
| vreinterpretq_s16_s32(v2tmp3.val[0])); // q1 |
| v2tmp1 = vtrnq_s16(vreinterpretq_s16_s32(v2tmp2.val[1]), // q2 |
| vreinterpretq_s16_s32(v2tmp3.val[1])); // q3 |
| |
| q11s16 = vaddq_s16(v2tmp0.val[0], v2tmp1.val[1]); |
| q12s16 = vaddq_s16(v2tmp0.val[1], v2tmp1.val[0]); |
| q13s16 = vsubq_s16(v2tmp0.val[1], v2tmp1.val[0]); |
| q14s16 = vsubq_s16(v2tmp0.val[0], v2tmp1.val[1]); |
| |
| q15s16 = vdupq_n_s16(7); |
| q11s16 = vaddq_s16(q11s16, q15s16); |
| q0s16 = vaddq_s16(q11s16, q12s16); |
| q1s16 = vsubq_s16(q11s16, q12s16); |
| |
| q11s32 = q9s32; |
| q12s32 = q10s32; |
| |
| d0s16 = vget_low_s16(q0s16); |
| d1s16 = vget_high_s16(q0s16); |
| d2s16 = vget_low_s16(q1s16); |
| d3s16 = vget_high_s16(q1s16); |
| |
| d0s16 = vshr_n_s16(d0s16, 4); |
| d4s16 = vshr_n_s16(d1s16, 4); |
| d2s16 = vshr_n_s16(d2s16, 4); |
| d6s16 = vshr_n_s16(d3s16, 4); |
| |
| d26s16 = vget_low_s16(q13s16); |
| d27s16 = vget_high_s16(q13s16); |
| d28s16 = vget_low_s16(q14s16); |
| d29s16 = vget_high_s16(q14s16); |
| |
| q9s32 = vmlal_s16(q9s32, d28s16, d16s16); |
| q10s32 = vmlal_s16(q10s32, d28s16, d17s16); |
| q11s32 = vmlal_s16(q11s32, d29s16, d16s16); |
| q12s32 = vmlal_s16(q12s32, d29s16, d17s16); |
| |
| q9s32 = vmlal_s16(q9s32, d26s16, d17s16); |
| q10s32 = vmlsl_s16(q10s32, d26s16, d16s16); |
| q11s32 = vmlal_s16(q11s32, d27s16, d17s16); |
| q12s32 = vmlsl_s16(q12s32, d27s16, d16s16); |
| |
| d1s16 = vshrn_n_s32(q9s32, 16); |
| d3s16 = vshrn_n_s32(q10s32, 16); |
| d5s16 = vshrn_n_s32(q11s32, 16); |
| d7s16 = vshrn_n_s32(q12s32, 16); |
| |
| qEmptys16 = vdupq_n_s16(0); |
| q14u16 = vceqq_s16(q14s16, qEmptys16); |
| q14u16 = vmvnq_u16(q14u16); |
| |
| d28u16 = vget_low_u16(q14u16); |
| d29u16 = vget_high_u16(q14u16); |
| d1s16 = vsub_s16(d1s16, vreinterpret_s16_u16(d28u16)); |
| d5s16 = vsub_s16(d5s16, vreinterpret_s16_u16(d29u16)); |
| |
| q0s16 = vcombine_s16(d0s16, d1s16); |
| q1s16 = vcombine_s16(d2s16, d3s16); |
| q2s16 = vcombine_s16(d4s16, d5s16); |
| q3s16 = vcombine_s16(d6s16, d7s16); |
| |
| vst1q_s16(output, q0s16); |
| vst1q_s16(output + 8, q1s16); |
| vst1q_s16(output + 16, q2s16); |
| vst1q_s16(output + 24, q3s16); |
| return; |
| } |
