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Refine 8-bit 8x8 idct NEON intrinsics

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Change-Id: I4ec4ad1928ec2ed87f596f52f097bc52065278dd
This commit is contained in:
Linfeng Zhang 2016-11-16 13:22:50 -08:00
parent a8eee97b43
commit cb339d628f
3 changed files with 320 additions and 421 deletions
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70
vpx_dsp/arm/idct8x8_1_add_neon.c
View File

@ -16,47 +16,43 @@
void vpx_idct8x8_1_add_neon(const tran_low_t *input, uint8_t *dest,
int dest_stride) {
uint8x8_t d2u8, d3u8, d30u8, d31u8;
uint64x1_t d2u64, d3u64, d4u64, d5u64;
uint16x8_t q0u16, q9u16, q10u16, q11u16, q12u16;
int16x8_t q0s16;
uint8_t *d1, *d2;
int16_t i, a1;
int16_t out = dct_const_round_shift(input[0] * cospi_16_64);
out = dct_const_round_shift(out * cospi_16_64);
a1 = ROUND_POWER_OF_TWO(out, 5);
int i;
const int16_t out0 = dct_const_round_shift(input[0] * cospi_16_64);
const int16_t out1 = dct_const_round_shift(out0 * cospi_16_64);
const int16_t out2 = ROUND_POWER_OF_TWO(out1, 5);
const int16x8_t dc = vdupq_n_s16(out2);
const uint16x8_t dc_u16 = vreinterpretq_u16_s16(dc);
const uint8_t *dst = dest;
uint8x8_t d0, d1, d2, d3;
uint16x8_t d0_u16, d1_u16, d2_u16, d3_u16;
q0s16 = vdupq_n_s16(a1);
q0u16 = vreinterpretq_u16_s16(q0s16);
d1 = d2 = dest;
for (i = 0; i < 2; i++) {
d2u64 = vld1_u64((const uint64_t *)d1);
d1 += dest_stride;
d3u64 = vld1_u64((const uint64_t *)d1);
d1 += dest_stride;
d4u64 = vld1_u64((const uint64_t *)d1);
d1 += dest_stride;
d5u64 = vld1_u64((const uint64_t *)d1);
d1 += dest_stride;
d0 = vld1_u8(dst);
dst += dest_stride;
d1 = vld1_u8(dst);
dst += dest_stride;
d2 = vld1_u8(dst);
dst += dest_stride;
d3 = vld1_u8(dst);
dst += dest_stride;
q9u16 = vaddw_u8(q0u16, vreinterpret_u8_u64(d2u64));
q10u16 = vaddw_u8(q0u16, vreinterpret_u8_u64(d3u64));
q11u16 = vaddw_u8(q0u16, vreinterpret_u8_u64(d4u64));
q12u16 = vaddw_u8(q0u16, vreinterpret_u8_u64(d5u64));
d0_u16 = vaddw_u8(dc_u16, d0);
d1_u16 = vaddw_u8(dc_u16, d1);
d2_u16 = vaddw_u8(dc_u16, d2);
d3_u16 = vaddw_u8(dc_u16, d3);
d2u8 = vqmovun_s16(vreinterpretq_s16_u16(q9u16));
d3u8 = vqmovun_s16(vreinterpretq_s16_u16(q10u16));
d30u8 = vqmovun_s16(vreinterpretq_s16_u16(q11u16));
d31u8 = vqmovun_s16(vreinterpretq_s16_u16(q12u16));
d0 = vqmovun_s16(vreinterpretq_s16_u16(d0_u16));
d1 = vqmovun_s16(vreinterpretq_s16_u16(d1_u16));
d2 = vqmovun_s16(vreinterpretq_s16_u16(d2_u16));
d3 = vqmovun_s16(vreinterpretq_s16_u16(d3_u16));
vst1_u64((uint64_t *)d2, vreinterpret_u64_u8(d2u8));
d2 += dest_stride;
vst1_u64((uint64_t *)d2, vreinterpret_u64_u8(d3u8));
d2 += dest_stride;
vst1_u64((uint64_t *)d2, vreinterpret_u64_u8(d30u8));
d2 += dest_stride;
vst1_u64((uint64_t *)d2, vreinterpret_u64_u8(d31u8));
d2 += dest_stride;
vst1_u8(dest, d0);
dest += dest_stride;
vst1_u8(dest, d1);
dest += dest_stride;
vst1_u8(dest, d2);
dest += dest_stride;
vst1_u8(dest, d3);
dest += dest_stride;
}
}

663
vpx_dsp/arm/idct8x8_add_neon.c
View File

@ -16,431 +16,330 @@
#include "vpx_dsp/arm/transpose_neon.h"
#include "vpx_dsp/txfm_common.h"
static INLINE void IDCT8x8_1D(int16x8_t *q8s16, int16x8_t *q9s16,
int16x8_t *q10s16, int16x8_t *q11s16,
int16x8_t *q12s16, int16x8_t *q13s16,
int16x8_t *q14s16, int16x8_t *q15s16) {
int16x4_t d0s16, d1s16, d2s16, d3s16;
int16x4_t d8s16, d9s16, d10s16, d11s16, d12s16, d13s16, d14s16, d15s16;
int16x4_t d16s16, d17s16, d18s16, d19s16, d20s16, d21s16, d22s16, d23s16;
int16x4_t d24s16, d25s16, d26s16, d27s16, d28s16, d29s16, d30s16, d31s16;
int16x8_t q0s16, q1s16, q2s16, q3s16, q4s16, q5s16, q6s16, q7s16;
int32x4_t q2s32, q3s32, q5s32, q6s32, q8s32, q9s32;
int32x4_t q10s32, q11s32, q12s32, q13s32, q15s32;
static INLINE void IDCT8x8_1D(const int16x4_t cospis0, const int16x4_t cospis1,
int16x8_t *a0, int16x8_t *a1, int16x8_t *a2,
int16x8_t *a3, int16x8_t *a4, int16x8_t *a5,
int16x8_t *a6, int16x8_t *a7) {
const int16x4_t a0l = vget_low_s16(*a0);
const int16x4_t a0h = vget_high_s16(*a0);
const int16x4_t a1l = vget_low_s16(*a1);
const int16x4_t a1h = vget_high_s16(*a1);
const int16x4_t a2l = vget_low_s16(*a2);
const int16x4_t a2h = vget_high_s16(*a2);
const int16x4_t a3l = vget_low_s16(*a3);
const int16x4_t a3h = vget_high_s16(*a3);
const int16x4_t a4l = vget_low_s16(*a4);
const int16x4_t a4h = vget_high_s16(*a4);
const int16x4_t a5l = vget_low_s16(*a5);
const int16x4_t a5h = vget_high_s16(*a5);
const int16x4_t a6l = vget_low_s16(*a6);
const int16x4_t a6h = vget_high_s16(*a6);
const int16x4_t a7l = vget_low_s16(*a7);
const int16x4_t a7h = vget_high_s16(*a7);
int32x4_t b0, b1, b2, b3;
int16x4_t c0, c1, c2, c3;
int16x8_t d0, d1, d2, d3, d4, d5, d6, d7, e0, e1, e2, e3;
d0s16 = vdup_n_s16((int16_t)cospi_28_64);
d1s16 = vdup_n_s16((int16_t)cospi_4_64);
d2s16 = vdup_n_s16((int16_t)cospi_12_64);
d3s16 = vdup_n_s16((int16_t)cospi_20_64);
b0 = vmull_lane_s16(a1l, cospis1, 3);
b1 = vmull_lane_s16(a1h, cospis1, 3);
b2 = vmull_lane_s16(a5l, cospis1, 1);
b3 = vmull_lane_s16(a5h, cospis1, 1);
b0 = vmlsl_lane_s16(b0, a7l, cospis1, 0);
b1 = vmlsl_lane_s16(b1, a7h, cospis1, 0);
b2 = vmlal_lane_s16(b2, a3l, cospis1, 2);
b3 = vmlal_lane_s16(b3, a3h, cospis1, 2);
c0 = vrshrn_n_s32(b0, 14);
c1 = vrshrn_n_s32(b1, 14);
c2 = vrshrn_n_s32(b2, 14);
c3 = vrshrn_n_s32(b3, 14);
d4 = vcombine_s16(c0, c1);
d5 = vcombine_s16(c2, c3);
d16s16 = vget_low_s16(*q8s16);
d17s16 = vget_high_s16(*q8s16);
d18s16 = vget_low_s16(*q9s16);
d19s16 = vget_high_s16(*q9s16);
d20s16 = vget_low_s16(*q10s16);
d21s16 = vget_high_s16(*q10s16);
d22s16 = vget_low_s16(*q11s16);
d23s16 = vget_high_s16(*q11s16);
d24s16 = vget_low_s16(*q12s16);
d25s16 = vget_high_s16(*q12s16);
d26s16 = vget_low_s16(*q13s16);
d27s16 = vget_high_s16(*q13s16);
d28s16 = vget_low_s16(*q14s16);
d29s16 = vget_high_s16(*q14s16);
d30s16 = vget_low_s16(*q15s16);
d31s16 = vget_high_s16(*q15s16);
b0 = vmull_lane_s16(a1l, cospis1, 0);
b1 = vmull_lane_s16(a1h, cospis1, 0);
b2 = vmull_lane_s16(a3l, cospis1, 1);
b3 = vmull_lane_s16(a3h, cospis1, 1);
b0 = vmlal_lane_s16(b0, a7l, cospis1, 3);
b1 = vmlal_lane_s16(b1, a7h, cospis1, 3);
b2 = vmlsl_lane_s16(b2, a5l, cospis1, 2);
b3 = vmlsl_lane_s16(b3, a5h, cospis1, 2);
c0 = vrshrn_n_s32(b0, 14);
c1 = vrshrn_n_s32(b1, 14);
c2 = vrshrn_n_s32(b2, 14);
c3 = vrshrn_n_s32(b3, 14);
d6 = vcombine_s16(c2, c3);
d7 = vcombine_s16(c0, c1);
q2s32 = vmull_s16(d18s16, d0s16);
q3s32 = vmull_s16(d19s16, d0s16);
q5s32 = vmull_s16(d26s16, d2s16);
q6s32 = vmull_s16(d27s16, d2s16);
b2 = vmull_lane_s16(a0l, cospis0, 2);
b3 = vmull_lane_s16(a0h, cospis0, 2);
b0 = vmlal_lane_s16(b2, a4l, cospis0, 2);
b1 = vmlal_lane_s16(b3, a4h, cospis0, 2);
b2 = vmlsl_lane_s16(b2, a4l, cospis0, 2);
b3 = vmlsl_lane_s16(b3, a4h, cospis0, 2);
c0 = vrshrn_n_s32(b0, 14);
c1 = vrshrn_n_s32(b1, 14);
c2 = vrshrn_n_s32(b2, 14);
c3 = vrshrn_n_s32(b3, 14);
e0 = vcombine_s16(c0, c1);
e1 = vcombine_s16(c2, c3);
q2s32 = vmlsl_s16(q2s32, d30s16, d1s16);
q3s32 = vmlsl_s16(q3s32, d31s16, d1s16);
q5s32 = vmlsl_s16(q5s32, d22s16, d3s16);
q6s32 = vmlsl_s16(q6s32, d23s16, d3s16);
b0 = vmull_lane_s16(a2l, cospis0, 3);
b1 = vmull_lane_s16(a2h, cospis0, 3);
b2 = vmull_lane_s16(a2l, cospis0, 1);
b3 = vmull_lane_s16(a2h, cospis0, 1);
b0 = vmlsl_lane_s16(b0, a6l, cospis0, 1);
b1 = vmlsl_lane_s16(b1, a6h, cospis0, 1);
b2 = vmlal_lane_s16(b2, a6l, cospis0, 3);
b3 = vmlal_lane_s16(b3, a6h, cospis0, 3);
c0 = vrshrn_n_s32(b0, 14);
c1 = vrshrn_n_s32(b1, 14);
c2 = vrshrn_n_s32(b2, 14);
c3 = vrshrn_n_s32(b3, 14);
e2 = vcombine_s16(c0, c1);
e3 = vcombine_s16(c2, c3);
d8s16 = vqrshrn_n_s32(q2s32, 14);
d9s16 = vqrshrn_n_s32(q3s32, 14);
d10s16 = vqrshrn_n_s32(q5s32, 14);
d11s16 = vqrshrn_n_s32(q6s32, 14);
q4s16 = vcombine_s16(d8s16, d9s16);
q5s16 = vcombine_s16(d10s16, d11s16);
d0 = vaddq_s16(e0, e3);
d1 = vaddq_s16(e1, e2);
d2 = vsubq_s16(e1, e2);
d3 = vsubq_s16(e0, e3);
q2s32 = vmull_s16(d18s16, d1s16);
q3s32 = vmull_s16(d19s16, d1s16);
q9s32 = vmull_s16(d26s16, d3s16);
q13s32 = vmull_s16(d27s16, d3s16);
e0 = vsubq_s16(d4, d5);
e1 = vsubq_s16(d7, d6);
d4 = vaddq_s16(d4, d5);
d7 = vaddq_s16(d7, d6);
c0 = vget_low_s16(e0);
c1 = vget_high_s16(e0);
c2 = vget_low_s16(e1);
c3 = vget_high_s16(e1);
q2s32 = vmlal_s16(q2s32, d30s16, d0s16);
q3s32 = vmlal_s16(q3s32, d31s16, d0s16);
q9s32 = vmlal_s16(q9s32, d22s16, d2s16);
q13s32 = vmlal_s16(q13s32, d23s16, d2s16);
b2 = vmull_lane_s16(c2, cospis0, 2);
b3 = vmull_lane_s16(c3, cospis0, 2);
b0 = vmlsl_lane_s16(b2, c0, cospis0, 2);
b1 = vmlsl_lane_s16(b3, c1, cospis0, 2);
b2 = vmlal_lane_s16(b2, c0, cospis0, 2);
b3 = vmlal_lane_s16(b3, c1, cospis0, 2);
c0 = vrshrn_n_s32(b0, 14);
c1 = vrshrn_n_s32(b1, 14);
c2 = vrshrn_n_s32(b2, 14);
c3 = vrshrn_n_s32(b3, 14);
d5 = vcombine_s16(c0, c1);
d6 = vcombine_s16(c2, c3);
d14s16 = vqrshrn_n_s32(q2s32, 14);
d15s16 = vqrshrn_n_s32(q3s32, 14);
d12s16 = vqrshrn_n_s32(q9s32, 14);
d13s16 = vqrshrn_n_s32(q13s32, 14);
q6s16 = vcombine_s16(d12s16, d13s16);
q7s16 = vcombine_s16(d14s16, d15s16);
*a0 = vaddq_s16(d0, d7);
*a1 = vaddq_s16(d1, d6);
*a2 = vaddq_s16(d2, d5);
*a3 = vaddq_s16(d3, d4);
*a4 = vsubq_s16(d3, d4);
*a5 = vsubq_s16(d2, d5);
*a6 = vsubq_s16(d1, d6);
*a7 = vsubq_s16(d0, d7);
}
d0s16 = vdup_n_s16((int16_t)cospi_16_64);
static INLINE void add8x8(int16x8_t a0, int16x8_t a1, int16x8_t a2,
int16x8_t a3, int16x8_t a4, int16x8_t a5,
int16x8_t a6, int16x8_t a7, uint8_t *dest,
const int dest_stride) {
const uint8_t *dst = dest;
uint8x8_t d0, d1, d2, d3, d4, d5, d6, d7;
uint16x8_t d0_u16, d1_u16, d2_u16, d3_u16, d4_u16, d5_u16, d6_u16, d7_u16;
q2s32 = vmull_s16(d16s16, d0s16);
q3s32 = vmull_s16(d17s16, d0s16);
q13s32 = vmull_s16(d16s16, d0s16);
q15s32 = vmull_s16(d17s16, d0s16);
a0 = vrshrq_n_s16(a0, 5);
a1 = vrshrq_n_s16(a1, 5);
a2 = vrshrq_n_s16(a2, 5);
a3 = vrshrq_n_s16(a3, 5);
a4 = vrshrq_n_s16(a4, 5);
a5 = vrshrq_n_s16(a5, 5);
a6 = vrshrq_n_s16(a6, 5);
a7 = vrshrq_n_s16(a7, 5);
q2s32 = vmlal_s16(q2s32, d24s16, d0s16);
q3s32 = vmlal_s16(q3s32, d25s16, d0s16);
q13s32 = vmlsl_s16(q13s32, d24s16, d0s16);
q15s32 = vmlsl_s16(q15s32, d25s16, d0s16);
d0 = vld1_u8(dst);
dst += dest_stride;
d1 = vld1_u8(dst);
dst += dest_stride;
d2 = vld1_u8(dst);
dst += dest_stride;
d3 = vld1_u8(dst);
dst += dest_stride;
d4 = vld1_u8(dst);
dst += dest_stride;
d5 = vld1_u8(dst);
dst += dest_stride;
d6 = vld1_u8(dst);
dst += dest_stride;
d7 = vld1_u8(dst);
d0s16 = vdup_n_s16((int16_t)cospi_24_64);
d1s16 = vdup_n_s16((int16_t)cospi_8_64);
d0_u16 = vaddw_u8(vreinterpretq_u16_s16(a0), d0);
d1_u16 = vaddw_u8(vreinterpretq_u16_s16(a1), d1);
d2_u16 = vaddw_u8(vreinterpretq_u16_s16(a2), d2);
d3_u16 = vaddw_u8(vreinterpretq_u16_s16(a3), d3);
d4_u16 = vaddw_u8(vreinterpretq_u16_s16(a4), d4);
d5_u16 = vaddw_u8(vreinterpretq_u16_s16(a5), d5);
d6_u16 = vaddw_u8(vreinterpretq_u16_s16(a6), d6);
d7_u16 = vaddw_u8(vreinterpretq_u16_s16(a7), d7);
d18s16 = vqrshrn_n_s32(q2s32, 14);
d19s16 = vqrshrn_n_s32(q3s32, 14);
d22s16 = vqrshrn_n_s32(q13s32, 14);
d23s16 = vqrshrn_n_s32(q15s32, 14);
*q9s16 = vcombine_s16(d18s16, d19s16);
*q11s16 = vcombine_s16(d22s16, d23s16);
d0 = vqmovun_s16(vreinterpretq_s16_u16(d0_u16));
d1 = vqmovun_s16(vreinterpretq_s16_u16(d1_u16));
d2 = vqmovun_s16(vreinterpretq_s16_u16(d2_u16));
d3 = vqmovun_s16(vreinterpretq_s16_u16(d3_u16));
d4 = vqmovun_s16(vreinterpretq_s16_u16(d4_u16));
d5 = vqmovun_s16(vreinterpretq_s16_u16(d5_u16));
d6 = vqmovun_s16(vreinterpretq_s16_u16(d6_u16));
d7 = vqmovun_s16(vreinterpretq_s16_u16(d7_u16));
q2s32 = vmull_s16(d20s16, d0s16);
q3s32 = vmull_s16(d21s16, d0s16);
q8s32 = vmull_s16(d20s16, d1s16);
q12s32 = vmull_s16(d21s16, d1s16);
q2s32 = vmlsl_s16(q2s32, d28s16, d1s16);
q3s32 = vmlsl_s16(q3s32, d29s16, d1s16);
q8s32 = vmlal_s16(q8s32, d28s16, d0s16);
q12s32 = vmlal_s16(q12s32, d29s16, d0s16);
d26s16 = vqrshrn_n_s32(q2s32, 14);
d27s16 = vqrshrn_n_s32(q3s32, 14);
d30s16 = vqrshrn_n_s32(q8s32, 14);
d31s16 = vqrshrn_n_s32(q12s32, 14);
*q13s16 = vcombine_s16(d26s16, d27s16);
*q15s16 = vcombine_s16(d30s16, d31s16);
q0s16 = vaddq_s16(*q9s16, *q15s16);
q1s16 = vaddq_s16(*q11s16, *q13s16);
q2s16 = vsubq_s16(*q11s16, *q13s16);
q3s16 = vsubq_s16(*q9s16, *q15s16);
*q13s16 = vsubq_s16(q4s16, q5s16);
q4s16 = vaddq_s16(q4s16, q5s16);
*q14s16 = vsubq_s16(q7s16, q6s16);
q7s16 = vaddq_s16(q7s16, q6s16);
d26s16 = vget_low_s16(*q13s16);
d27s16 = vget_high_s16(*q13s16);
d28s16 = vget_low_s16(*q14s16);
d29s16 = vget_high_s16(*q14s16);
d16s16 = vdup_n_s16((int16_t)cospi_16_64);
q9s32 = vmull_s16(d28s16, d16s16);
q10s32 = vmull_s16(d29s16, d16s16);
q11s32 = vmull_s16(d28s16, d16s16);
q12s32 = vmull_s16(d29s16, d16s16);
q9s32 = vmlsl_s16(q9s32, d26s16, d16s16);
q10s32 = vmlsl_s16(q10s32, d27s16, d16s16);
q11s32 = vmlal_s16(q11s32, d26s16, d16s16);
q12s32 = vmlal_s16(q12s32, d27s16, d16s16);
d10s16 = vqrshrn_n_s32(q9s32, 14);
d11s16 = vqrshrn_n_s32(q10s32, 14);
d12s16 = vqrshrn_n_s32(q11s32, 14);
d13s16 = vqrshrn_n_s32(q12s32, 14);
q5s16 = vcombine_s16(d10s16, d11s16);
q6s16 = vcombine_s16(d12s16, d13s16);
*q8s16 = vaddq_s16(q0s16, q7s16);
*q9s16 = vaddq_s16(q1s16, q6s16);
*q10s16 = vaddq_s16(q2s16, q5s16);
*q11s16 = vaddq_s16(q3s16, q4s16);
*q12s16 = vsubq_s16(q3s16, q4s16);
*q13s16 = vsubq_s16(q2s16, q5s16);
*q14s16 = vsubq_s16(q1s16, q6s16);
*q15s16 = vsubq_s16(q0s16, q7s16);
vst1_u8(dest, d0);
dest += dest_stride;
vst1_u8(dest, d1);
dest += dest_stride;
vst1_u8(dest, d2);
dest += dest_stride;
vst1_u8(dest, d3);
dest += dest_stride;
vst1_u8(dest, d4);
dest += dest_stride;
vst1_u8(dest, d5);
dest += dest_stride;
vst1_u8(dest, d6);
dest += dest_stride;
vst1_u8(dest, d7);
}
void vpx_idct8x8_64_add_neon(const tran_low_t *input, uint8_t *dest,
int dest_stride) {
uint8_t *d1, *d2;
uint8x8_t d0u8, d1u8, d2u8, d3u8;
uint64x1_t d0u64, d1u64, d2u64, d3u64;
int16x8_t q8s16, q9s16, q10s16, q11s16, q12s16, q13s16, q14s16, q15s16;
uint16x8_t q8u16, q9u16, q10u16, q11u16;
const int16x8_t cospis = vld1q_s16(kCospi);
const int16x4_t cospis0 = vget_low_s16(cospis); // cospi 0, 8, 16, 24
const int16x4_t cospis1 = vget_high_s16(cospis); // cospi 4, 12, 20, 28
int16x8_t a0, a1, a2, a3, a4, a5, a6, a7;
q8s16 = load_tran_low_to_s16q(input);
q9s16 = load_tran_low_to_s16q(input + 8);
q10s16 = load_tran_low_to_s16q(input + 16);
q11s16 = load_tran_low_to_s16q(input + 24);
q12s16 = load_tran_low_to_s16q(input + 32);
q13s16 = load_tran_low_to_s16q(input + 40);
q14s16 = load_tran_low_to_s16q(input + 48);
q15s16 = load_tran_low_to_s16q(input + 56);
a0 = load_tran_low_to_s16q(input);
a1 = load_tran_low_to_s16q(input + 8);
a2 = load_tran_low_to_s16q(input + 16);
a3 = load_tran_low_to_s16q(input + 24);
a4 = load_tran_low_to_s16q(input + 32);
a5 = load_tran_low_to_s16q(input + 40);
a6 = load_tran_low_to_s16q(input + 48);
a7 = load_tran_low_to_s16q(input + 56);
transpose_s16_8x8(&q8s16, &q9s16, &q10s16, &q11s16, &q12s16, &q13s16, &q14s16,
&q15s16);
transpose_s16_8x8(&a0, &a1, &a2, &a3, &a4, &a5, &a6, &a7);
IDCT8x8_1D(cospis0, cospis1, &a0, &a1, &a2, &a3, &a4, &a5, &a6, &a7);
transpose_s16_8x8(&a0, &a1, &a2, &a3, &a4, &a5, &a6, &a7);
IDCT8x8_1D(cospis0, cospis1, &a0, &a1, &a2, &a3, &a4, &a5, &a6, &a7);
add8x8(a0, a1, a2, a3, a4, a5, a6, a7, dest, dest_stride);
}
IDCT8x8_1D(&q8s16, &q9s16, &q10s16, &q11s16, &q12s16, &q13s16, &q14s16,
&q15s16);
static INLINE void IDCT8x4_1D(const int16x4_t cospis0, const int16x4_t cospisd0,
const int16x4_t cospisd1, int16x8_t *a0,
int16x8_t *a1, int16x8_t *a2, int16x8_t *a3,
int16x8_t *a4, int16x8_t *a5, int16x8_t *a6,
int16x8_t *a7) {
int32x4_t b0, b1, b2, b3;
int16x4_t c0, c1, c2, c3;
int16x8_t d0, d1, d2, d3, d4, d5, d6, d7, e0, e1, e2, e3;
transpose_s16_8x8(&q8s16, &q9s16, &q10s16, &q11s16, &q12s16, &q13s16, &q14s16,
&q15s16);
d4 = vqrdmulhq_lane_s16(*a1, cospisd1, 3);
d5 = vqrdmulhq_lane_s16(*a3, cospisd1, 2);
d6 = vqrdmulhq_lane_s16(*a3, cospisd1, 1);
d7 = vqrdmulhq_lane_s16(*a1, cospisd1, 0);
e0 = vqrdmulhq_lane_s16(*a0, cospisd0, 2);
e2 = vqrdmulhq_lane_s16(*a2, cospisd0, 3);
e3 = vqrdmulhq_lane_s16(*a2, cospisd0, 1);
IDCT8x8_1D(&q8s16, &q9s16, &q10s16, &q11s16, &q12s16, &q13s16, &q14s16,
&q15s16);
d0 = vaddq_s16(e0, e3);
d1 = vaddq_s16(e0, e2);
d2 = vsubq_s16(e0, e2);
d3 = vsubq_s16(e0, e3);
q8s16 = vrshrq_n_s16(q8s16, 5);
q9s16 = vrshrq_n_s16(q9s16, 5);
q10s16 = vrshrq_n_s16(q10s16, 5);
q11s16 = vrshrq_n_s16(q11s16, 5);
q12s16 = vrshrq_n_s16(q12s16, 5);
q13s16 = vrshrq_n_s16(q13s16, 5);
q14s16 = vrshrq_n_s16(q14s16, 5);
q15s16 = vrshrq_n_s16(q15s16, 5);
e0 = vsubq_s16(d4, d5);
e1 = vsubq_s16(d7, d6);
d4 = vaddq_s16(d4, d5);
d7 = vaddq_s16(d7, d6);
c0 = vget_low_s16(e0);
c1 = vget_high_s16(e0);
c2 = vget_low_s16(e1);
c3 = vget_high_s16(e1);
d1 = d2 = dest;
b2 = vmull_lane_s16(c2, cospis0, 2);
b3 = vmull_lane_s16(c3, cospis0, 2);
b0 = vmlsl_lane_s16(b2, c0, cospis0, 2);
b1 = vmlsl_lane_s16(b3, c1, cospis0, 2);
b2 = vmlal_lane_s16(b2, c0, cospis0, 2);
b3 = vmlal_lane_s16(b3, c1, cospis0, 2);
c0 = vrshrn_n_s32(b0, 14);
c1 = vrshrn_n_s32(b1, 14);
c2 = vrshrn_n_s32(b2, 14);
c3 = vrshrn_n_s32(b3, 14);
d5 = vcombine_s16(c0, c1);
d6 = vcombine_s16(c2, c3);
d0u64 = vld1_u64((uint64_t *)d1);
d1 += dest_stride;
d1u64 = vld1_u64((uint64_t *)d1);
d1 += dest_stride;
d2u64 = vld1_u64((uint64_t *)d1);
d1 += dest_stride;
d3u64 = vld1_u64((uint64_t *)d1);
d1 += dest_stride;
q8u16 = vaddw_u8(vreinterpretq_u16_s16(q8s16), vreinterpret_u8_u64(d0u64));
q9u16 = vaddw_u8(vreinterpretq_u16_s16(q9s16), vreinterpret_u8_u64(d1u64));
q10u16 = vaddw_u8(vreinterpretq_u16_s16(q10s16), vreinterpret_u8_u64(d2u64));
q11u16 = vaddw_u8(vreinterpretq_u16_s16(q11s16), vreinterpret_u8_u64(d3u64));
d0u8 = vqmovun_s16(vreinterpretq_s16_u16(q8u16));
d1u8 = vqmovun_s16(vreinterpretq_s16_u16(q9u16));
d2u8 = vqmovun_s16(vreinterpretq_s16_u16(q10u16));
d3u8 = vqmovun_s16(vreinterpretq_s16_u16(q11u16));
vst1_u64((uint64_t *)d2, vreinterpret_u64_u8(d0u8));
d2 += dest_stride;
vst1_u64((uint64_t *)d2, vreinterpret_u64_u8(d1u8));
d2 += dest_stride;
vst1_u64((uint64_t *)d2, vreinterpret_u64_u8(d2u8));
d2 += dest_stride;
vst1_u64((uint64_t *)d2, vreinterpret_u64_u8(d3u8));
d2 += dest_stride;
q8s16 = q12s16;
q9s16 = q13s16;
q10s16 = q14s16;
q11s16 = q15s16;
d0u64 = vld1_u64((uint64_t *)d1);
d1 += dest_stride;
d1u64 = vld1_u64((uint64_t *)d1);
d1 += dest_stride;
d2u64 = vld1_u64((uint64_t *)d1);
d1 += dest_stride;
d3u64 = vld1_u64((uint64_t *)d1);
d1 += dest_stride;
q8u16 = vaddw_u8(vreinterpretq_u16_s16(q8s16), vreinterpret_u8_u64(d0u64));
q9u16 = vaddw_u8(vreinterpretq_u16_s16(q9s16), vreinterpret_u8_u64(d1u64));
q10u16 = vaddw_u8(vreinterpretq_u16_s16(q10s16), vreinterpret_u8_u64(d2u64));
q11u16 = vaddw_u8(vreinterpretq_u16_s16(q11s16), vreinterpret_u8_u64(d3u64));
d0u8 = vqmovun_s16(vreinterpretq_s16_u16(q8u16));
d1u8 = vqmovun_s16(vreinterpretq_s16_u16(q9u16));
d2u8 = vqmovun_s16(vreinterpretq_s16_u16(q10u16));
d3u8 = vqmovun_s16(vreinterpretq_s16_u16(q11u16));
vst1_u64((uint64_t *)d2, vreinterpret_u64_u8(d0u8));
d2 += dest_stride;
vst1_u64((uint64_t *)d2, vreinterpret_u64_u8(d1u8));
d2 += dest_stride;
vst1_u64((uint64_t *)d2, vreinterpret_u64_u8(d2u8));
d2 += dest_stride;
vst1_u64((uint64_t *)d2, vreinterpret_u64_u8(d3u8));
d2 += dest_stride;
*a0 = vaddq_s16(d0, d7);
*a1 = vaddq_s16(d1, d6);
*a2 = vaddq_s16(d2, d5);
*a3 = vaddq_s16(d3, d4);
*a4 = vsubq_s16(d3, d4);
*a5 = vsubq_s16(d2, d5);
*a6 = vsubq_s16(d1, d6);
*a7 = vsubq_s16(d0, d7);
}
void vpx_idct8x8_12_add_neon(const tran_low_t *input, uint8_t *dest,
int dest_stride) {
uint8_t *d1, *d2;
uint8x8_t d0u8, d1u8, d2u8, d3u8;
int16x4_t d10s16, d11s16, d12s16, d13s16, d16s16;
int16x4_t d26s16, d27s16, d28s16, d29s16;
uint64x1_t d0u64, d1u64, d2u64, d3u64;
int16x8_t q0s16, q1s16, q2s16, q3s16, q4s16, q5s16, q6s16, q7s16;
int16x8_t q8s16, q9s16, q10s16, q11s16, q12s16, q13s16, q14s16, q15s16;
uint16x8_t q8u16, q9u16, q10u16, q11u16;
int32x4_t q9s32, q10s32, q11s32, q12s32;
const int16x8_t cospis = vld1q_s16(kCospi);
const int16x8_t cospisd = vaddq_s16(cospis, cospis);
const int16x4_t cospis0 = vget_low_s16(cospis); // cospi 0, 8, 16, 24
const int16x4_t cospisd0 = vget_low_s16(cospisd); // doubled 0, 8, 16, 24
const int16x4_t cospisd1 = vget_high_s16(cospisd); // doubled 4, 12, 20, 28
int16x8_t a0, a1, a2, a3, a4, a5, a6, a7;
int16x4_t b0, b1, b2, b3, b4, b5, b6, b7, b8, b9, b10, b11;
int32x4_t c0, c1;
q8s16 = load_tran_low_to_s16q(input);
q9s16 = load_tran_low_to_s16q(input + 8);
q10s16 = load_tran_low_to_s16q(input + 16);
q11s16 = load_tran_low_to_s16q(input + 24);
q12s16 = load_tran_low_to_s16q(input + 32);
q13s16 = load_tran_low_to_s16q(input + 40);
q14s16 = load_tran_low_to_s16q(input + 48);
q15s16 = load_tran_low_to_s16q(input + 56);
b8 = load_tran_low_to_s16d(input);
b9 = load_tran_low_to_s16d(input + 8);
b10 = load_tran_low_to_s16d(input + 16);
b11 = load_tran_low_to_s16d(input + 24);
transpose_s16_8x8(&q8s16, &q9s16, &q10s16, &q11s16, &q12s16, &q13s16, &q14s16,
&q15s16);
transpose_s16_4x4d(&b8, &b9, &b10, &b11);
// First transform rows
// stage 1
q0s16 = vdupq_n_s16((int16_t)cospi_28_64 * 2);
q1s16 = vdupq_n_s16((int16_t)cospi_4_64 * 2);
q4s16 = vqrdmulhq_s16(q9s16, q0s16);
q0s16 = vdupq_n_s16(-(int16_t)cospi_20_64 * 2);
q7s16 = vqrdmulhq_s16(q9s16, q1s16);
q1s16 = vdupq_n_s16((int16_t)cospi_12_64 * 2);
q5s16 = vqrdmulhq_s16(q11s16, q0s16);
q0s16 = vdupq_n_s16((int16_t)cospi_16_64 * 2);
q6s16 = vqrdmulhq_s16(q11s16, q1s16);
b4 = vqrdmulh_lane_s16(b9, cospisd1, 3);
b5 = vqrdmulh_lane_s16(b11, cospisd1, 2);
b6 = vqrdmulh_lane_s16(b11, cospisd1, 1);
b7 = vqrdmulh_lane_s16(b9, cospisd1, 0);
// stage 2 & stage 3 - even half
q1s16 = vdupq_n_s16((int16_t)cospi_24_64 * 2);
q9s16 = vqrdmulhq_s16(q8s16, q0s16);
q0s16 = vdupq_n_s16((int16_t)cospi_8_64 * 2);
q13s16 = vqrdmulhq_s16(q10s16, q1s16);
q15s16 = vqrdmulhq_s16(q10s16, q0s16);
b8 = vqrdmulh_lane_s16(b8, cospisd0, 2);
b11 = vqrdmulh_lane_s16(b10, cospisd0, 3);
b10 = vqrdmulh_lane_s16(b10, cospisd0, 1);
// stage 3 -odd half
q0s16 = vaddq_s16(q9s16, q15s16);
q1s16 = vaddq_s16(q9s16, q13s16);
q2s16 = vsubq_s16(q9s16, q13s16);
q3s16 = vsubq_s16(q9s16, q15s16);
b0 = vadd_s16(b8, b10);
b1 = vadd_s16(b8, b11);
b2 = vsub_s16(b8, b11);
b3 = vsub_s16(b8, b10);
// stage 2 - odd half
q13s16 = vsubq_s16(q4s16, q5s16);
q4s16 = vaddq_s16(q4s16, q5s16);
q14s16 = vsubq_s16(q7s16, q6s16);
q7s16 = vaddq_s16(q7s16, q6s16);
d26s16 = vget_low_s16(q13s16);
d27s16 = vget_high_s16(q13s16);
d28s16 = vget_low_s16(q14s16);
d29s16 = vget_high_s16(q14s16);
b8 = vsub_s16(b4, b5);
b4 = vadd_s16(b4, b5);
b9 = vsub_s16(b7, b6);
b7 = vadd_s16(b7, b6);
d16s16 = vdup_n_s16((int16_t)cospi_16_64);
q9s32 = vmull_s16(d28s16, d16s16);
q10s32 = vmull_s16(d29s16, d16s16);
q11s32 = vmull_s16(d28s16, d16s16);
q12s32 = vmull_s16(d29s16, d16s16);
q9s32 = vmlsl_s16(q9s32, d26s16, d16s16);
q10s32 = vmlsl_s16(q10s32, d27s16, d16s16);
q11s32 = vmlal_s16(q11s32, d26s16, d16s16);
q12s32 = vmlal_s16(q12s32, d27s16, d16s16);
d10s16 = vqrshrn_n_s32(q9s32, 14);
d11s16 = vqrshrn_n_s32(q10s32, 14);
d12s16 = vqrshrn_n_s32(q11s32, 14);
d13s16 = vqrshrn_n_s32(q12s32, 14);
q5s16 = vcombine_s16(d10s16, d11s16);
q6s16 = vcombine_s16(d12s16, d13s16);
c1 = vmull_lane_s16(b9, cospis0, 2);
c0 = vmlsl_lane_s16(c1, b8, cospis0, 2);
c1 = vmlal_lane_s16(c1, b8, cospis0, 2);
b5 = vrshrn_n_s32(c0, 14);
b6 = vrshrn_n_s32(c1, 14);
// stage 4
q8s16 = vaddq_s16(q0s16, q7s16);
q9s16 = vaddq_s16(q1s16, q6s16);
q10s16 = vaddq_s16(q2s16, q5s16);
q11s16 = vaddq_s16(q3s16, q4s16);
q12s16 = vsubq_s16(q3s16, q4s16);
q13s16 = vsubq_s16(q2s16, q5s16);
q14s16 = vsubq_s16(q1s16, q6s16);
q15s16 = vsubq_s16(q0s16, q7s16);
b8 = vadd_s16(b0, b7);
b9 = vadd_s16(b1, b6);
b10 = vadd_s16(b2, b5);
b11 = vadd_s16(b3, b4);
b4 = vsub_s16(b3, b4);
b5 = vsub_s16(b2, b5);
b6 = vsub_s16(b1, b6);
b7 = vsub_s16(b0, b7);
transpose_s16_8x8(&q8s16, &q9s16, &q10s16, &q11s16, &q12s16, &q13s16, &q14s16,
&q15s16);
IDCT8x8_1D(&q8s16, &q9s16, &q10s16, &q11s16, &q12s16, &q13s16, &q14s16,
&q15s16);
q8s16 = vrshrq_n_s16(q8s16, 5);
q9s16 = vrshrq_n_s16(q9s16, 5);
q10s16 = vrshrq_n_s16(q10s16, 5);
q11s16 = vrshrq_n_s16(q11s16, 5);
q12s16 = vrshrq_n_s16(q12s16, 5);
q13s16 = vrshrq_n_s16(q13s16, 5);
q14s16 = vrshrq_n_s16(q14s16, 5);
q15s16 = vrshrq_n_s16(q15s16, 5);
d1 = d2 = dest;
d0u64 = vld1_u64((uint64_t *)d1);
d1 += dest_stride;
d1u64 = vld1_u64((uint64_t *)d1);
d1 += dest_stride;
d2u64 = vld1_u64((uint64_t *)d1);
d1 += dest_stride;
d3u64 = vld1_u64((uint64_t *)d1);
d1 += dest_stride;
q8u16 = vaddw_u8(vreinterpretq_u16_s16(q8s16), vreinterpret_u8_u64(d0u64));
q9u16 = vaddw_u8(vreinterpretq_u16_s16(q9s16), vreinterpret_u8_u64(d1u64));
q10u16 = vaddw_u8(vreinterpretq_u16_s16(q10s16), vreinterpret_u8_u64(d2u64));
q11u16 = vaddw_u8(vreinterpretq_u16_s16(q11s16), vreinterpret_u8_u64(d3u64));
d0u8 = vqmovun_s16(vreinterpretq_s16_u16(q8u16));
d1u8 = vqmovun_s16(vreinterpretq_s16_u16(q9u16));
d2u8 = vqmovun_s16(vreinterpretq_s16_u16(q10u16));
d3u8 = vqmovun_s16(vreinterpretq_s16_u16(q11u16));
vst1_u64((uint64_t *)d2, vreinterpret_u64_u8(d0u8));
d2 += dest_stride;
vst1_u64((uint64_t *)d2, vreinterpret_u64_u8(d1u8));
d2 += dest_stride;
vst1_u64((uint64_t *)d2, vreinterpret_u64_u8(d2u8));
d2 += dest_stride;
vst1_u64((uint64_t *)d2, vreinterpret_u64_u8(d3u8));
d2 += dest_stride;
q8s16 = q12s16;
q9s16 = q13s16;
q10s16 = q14s16;
q11s16 = q15s16;
d0u64 = vld1_u64((uint64_t *)d1);
d1 += dest_stride;
d1u64 = vld1_u64((uint64_t *)d1);
d1 += dest_stride;
d2u64 = vld1_u64((uint64_t *)d1);
d1 += dest_stride;
d3u64 = vld1_u64((uint64_t *)d1);
d1 += dest_stride;
q8u16 = vaddw_u8(vreinterpretq_u16_s16(q8s16), vreinterpret_u8_u64(d0u64));
q9u16 = vaddw_u8(vreinterpretq_u16_s16(q9s16), vreinterpret_u8_u64(d1u64));
q10u16 = vaddw_u8(vreinterpretq_u16_s16(q10s16), vreinterpret_u8_u64(d2u64));
q11u16 = vaddw_u8(vreinterpretq_u16_s16(q11s16), vreinterpret_u8_u64(d3u64));
d0u8 = vqmovun_s16(vreinterpretq_s16_u16(q8u16));
d1u8 = vqmovun_s16(vreinterpretq_s16_u16(q9u16));
d2u8 = vqmovun_s16(vreinterpretq_s16_u16(q10u16));
d3u8 = vqmovun_s16(vreinterpretq_s16_u16(q11u16));
vst1_u64((uint64_t *)d2, vreinterpret_u64_u8(d0u8));
d2 += dest_stride;
vst1_u64((uint64_t *)d2, vreinterpret_u64_u8(d1u8));
d2 += dest_stride;
vst1_u64((uint64_t *)d2, vreinterpret_u64_u8(d2u8));
d2 += dest_stride;
vst1_u64((uint64_t *)d2, vreinterpret_u64_u8(d3u8));
d2 += dest_stride;
transpose_s16_4x8(b8, b9, b10, b11, b4, b5, b6, b7, &a0, &a1, &a2, &a3);
IDCT8x4_1D(cospis0, cospisd0, cospisd1, &a0, &a1, &a2, &a3, &a4, &a5, &a6,
&a7);
add8x8(a0, a1, a2, a3, a4, a5, a6, a7, dest, dest_stride);
}

8
vpx_dsp/arm/idct_neon.h
View File

@ -17,8 +17,12 @@
#include "vpx_dsp/arm/transpose_neon.h"
#include "vpx_dsp/vpx_dsp_common.h"
DECLARE_ALIGNED(16, static const int16_t, kCospi[4]) = { 0, 15137, 11585,
6270 };
DECLARE_ALIGNED(16, static const int16_t, kCospi[8]) = {
16384 /* cospi_0_64 */, 15137 /* cospi_8_64 */,
11585 /* cospi_16_64 */, 6270 /* cospi_24_64 */,
16069 /* cospi_4_64 */, 13623 /* cospi_12_64 */,
-9102 /* -cospi_20_64 */, 3196 /* cospi_28_64 */
};
//------------------------------------------------------------------------------
// Helper functions used to load tran_low_t into int16, narrowing if necessary.