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Diffstat (limited to 'media/libvpx/libvpx/vp9/common/arm/neon/vp9_iht_neon.h')
| -rw-r--r-- | media/libvpx/libvpx/vp9/common/arm/neon/vp9_iht_neon.h | 272 |
1 files changed, 272 insertions, 0 deletions
diff --git a/media/libvpx/libvpx/vp9/common/arm/neon/vp9_iht_neon.h b/media/libvpx/libvpx/vp9/common/arm/neon/vp9_iht_neon.h new file mode 100644 index 0000000000..c64822e27c --- /dev/null +++ b/media/libvpx/libvpx/vp9/common/arm/neon/vp9_iht_neon.h @@ -0,0 +1,272 @@ +/* + * Copyright (c) 2018 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. + */ + +#ifndef VPX_VP9_COMMON_ARM_NEON_VP9_IHT_NEON_H_ +#define VPX_VP9_COMMON_ARM_NEON_VP9_IHT_NEON_H_ + +#include <arm_neon.h> + +#include "./vp9_rtcd.h" +#include "./vpx_config.h" +#include "vp9/common/vp9_common.h" +#include "vpx_dsp/arm/idct_neon.h" +#include "vpx_dsp/arm/mem_neon.h" +#include "vpx_dsp/txfm_common.h" + +static INLINE void iadst4(int16x8_t *const io) { + const int32x4_t c3 = vdupq_n_s32(sinpi_3_9); + int16x4_t x[4]; + int32x4_t s[8], output[4]; + const int16x4_t c = + create_s16x4_neon(sinpi_1_9, sinpi_2_9, sinpi_3_9, sinpi_4_9); + + x[0] = vget_low_s16(io[0]); + x[1] = vget_low_s16(io[1]); + x[2] = vget_high_s16(io[0]); + x[3] = vget_high_s16(io[1]); + + s[0] = vmull_lane_s16(x[0], c, 0); + s[1] = vmull_lane_s16(x[0], c, 1); + s[2] = vmull_lane_s16(x[1], c, 2); + s[3] = vmull_lane_s16(x[2], c, 3); + s[4] = vmull_lane_s16(x[2], c, 0); + s[5] = vmull_lane_s16(x[3], c, 1); + s[6] = vmull_lane_s16(x[3], c, 3); + s[7] = vaddl_s16(x[0], x[3]); + s[7] = vsubw_s16(s[7], x[2]); + + s[0] = vaddq_s32(s[0], s[3]); + s[0] = vaddq_s32(s[0], s[5]); + s[1] = vsubq_s32(s[1], s[4]); + s[1] = vsubq_s32(s[1], s[6]); + s[3] = s[2]; + s[2] = vmulq_s32(c3, s[7]); + + output[0] = vaddq_s32(s[0], s[3]); + output[1] = vaddq_s32(s[1], s[3]); + output[2] = s[2]; + output[3] = vaddq_s32(s[0], s[1]); + output[3] = vsubq_s32(output[3], s[3]); + dct_const_round_shift_low_8_dual(output, &io[0], &io[1]); +} + +static INLINE void iadst_half_butterfly_neon(int16x8_t *const x, + const int16x4_t c) { + // Don't add/sub before multiply, which will overflow in iadst8. + const int32x4_t x0_lo = vmull_lane_s16(vget_low_s16(x[0]), c, 0); + const int32x4_t x0_hi = vmull_lane_s16(vget_high_s16(x[0]), c, 0); + const int32x4_t x1_lo = vmull_lane_s16(vget_low_s16(x[1]), c, 0); + const int32x4_t x1_hi = vmull_lane_s16(vget_high_s16(x[1]), c, 0); + int32x4_t t0[2], t1[2]; + + t0[0] = vaddq_s32(x0_lo, x1_lo); + t0[1] = vaddq_s32(x0_hi, x1_hi); + t1[0] = vsubq_s32(x0_lo, x1_lo); + t1[1] = vsubq_s32(x0_hi, x1_hi); + x[0] = dct_const_round_shift_low_8(t0); + x[1] = dct_const_round_shift_low_8(t1); +} + +static INLINE void iadst_half_butterfly_neg_neon(int16x8_t *const x0, + int16x8_t *const x1, + const int16x4_t c) { + // Don't add/sub before multiply, which will overflow in iadst8. + const int32x4_t x0_lo = vmull_lane_s16(vget_low_s16(*x0), c, 1); + const int32x4_t x0_hi = vmull_lane_s16(vget_high_s16(*x0), c, 1); + const int32x4_t x1_lo = vmull_lane_s16(vget_low_s16(*x1), c, 1); + const int32x4_t x1_hi = vmull_lane_s16(vget_high_s16(*x1), c, 1); + int32x4_t t0[2], t1[2]; + + t0[0] = vaddq_s32(x0_lo, x1_lo); + t0[1] = vaddq_s32(x0_hi, x1_hi); + t1[0] = vsubq_s32(x0_lo, x1_lo); + t1[1] = vsubq_s32(x0_hi, x1_hi); + *x1 = dct_const_round_shift_low_8(t0); + *x0 = dct_const_round_shift_low_8(t1); +} + +static INLINE void iadst_half_butterfly_pos_neon(int16x8_t *const x0, + int16x8_t *const x1, + const int16x4_t c) { + // Don't add/sub before multiply, which will overflow in iadst8. + const int32x4_t x0_lo = vmull_lane_s16(vget_low_s16(*x0), c, 0); + const int32x4_t x0_hi = vmull_lane_s16(vget_high_s16(*x0), c, 0); + const int32x4_t x1_lo = vmull_lane_s16(vget_low_s16(*x1), c, 0); + const int32x4_t x1_hi = vmull_lane_s16(vget_high_s16(*x1), c, 0); + int32x4_t t0[2], t1[2]; + + t0[0] = vaddq_s32(x0_lo, x1_lo); + t0[1] = vaddq_s32(x0_hi, x1_hi); + t1[0] = vsubq_s32(x0_lo, x1_lo); + t1[1] = vsubq_s32(x0_hi, x1_hi); + *x1 = dct_const_round_shift_low_8(t0); + *x0 = dct_const_round_shift_low_8(t1); +} + +static INLINE void iadst_butterfly_lane_0_1_neon(const int16x8_t in0, + const int16x8_t in1, + const int16x4_t c, + int32x4_t *const s0, + int32x4_t *const s1) { + s0[0] = vmull_lane_s16(vget_low_s16(in0), c, 0); + s0[1] = vmull_lane_s16(vget_high_s16(in0), c, 0); + s1[0] = vmull_lane_s16(vget_low_s16(in0), c, 1); + s1[1] = vmull_lane_s16(vget_high_s16(in0), c, 1); + + s0[0] = vmlal_lane_s16(s0[0], vget_low_s16(in1), c, 1); + s0[1] = vmlal_lane_s16(s0[1], vget_high_s16(in1), c, 1); + s1[0] = vmlsl_lane_s16(s1[0], vget_low_s16(in1), c, 0); + s1[1] = vmlsl_lane_s16(s1[1], vget_high_s16(in1), c, 0); +} + +static INLINE void iadst_butterfly_lane_2_3_neon(const int16x8_t in0, + const int16x8_t in1, + const int16x4_t c, + int32x4_t *const s0, + int32x4_t *const s1) { + s0[0] = vmull_lane_s16(vget_low_s16(in0), c, 2); + s0[1] = vmull_lane_s16(vget_high_s16(in0), c, 2); + s1[0] = vmull_lane_s16(vget_low_s16(in0), c, 3); + s1[1] = vmull_lane_s16(vget_high_s16(in0), c, 3); + + s0[0] = vmlal_lane_s16(s0[0], vget_low_s16(in1), c, 3); + s0[1] = vmlal_lane_s16(s0[1], vget_high_s16(in1), c, 3); + s1[0] = vmlsl_lane_s16(s1[0], vget_low_s16(in1), c, 2); + s1[1] = vmlsl_lane_s16(s1[1], vget_high_s16(in1), c, 2); +} + +static INLINE void iadst_butterfly_lane_1_0_neon(const int16x8_t in0, + const int16x8_t in1, + const int16x4_t c, + int32x4_t *const s0, + int32x4_t *const s1) { + s0[0] = vmull_lane_s16(vget_low_s16(in0), c, 1); + s0[1] = vmull_lane_s16(vget_high_s16(in0), c, 1); + s1[0] = vmull_lane_s16(vget_low_s16(in0), c, 0); + s1[1] = vmull_lane_s16(vget_high_s16(in0), c, 0); + + s0[0] = vmlal_lane_s16(s0[0], vget_low_s16(in1), c, 0); + s0[1] = vmlal_lane_s16(s0[1], vget_high_s16(in1), c, 0); + s1[0] = vmlsl_lane_s16(s1[0], vget_low_s16(in1), c, 1); + s1[1] = vmlsl_lane_s16(s1[1], vget_high_s16(in1), c, 1); +} + +static INLINE void iadst_butterfly_lane_3_2_neon(const int16x8_t in0, + const int16x8_t in1, + const int16x4_t c, + int32x4_t *const s0, + int32x4_t *const s1) { + s0[0] = vmull_lane_s16(vget_low_s16(in0), c, 3); + s0[1] = vmull_lane_s16(vget_high_s16(in0), c, 3); + s1[0] = vmull_lane_s16(vget_low_s16(in0), c, 2); + s1[1] = vmull_lane_s16(vget_high_s16(in0), c, 2); + + s0[0] = vmlal_lane_s16(s0[0], vget_low_s16(in1), c, 2); + s0[1] = vmlal_lane_s16(s0[1], vget_high_s16(in1), c, 2); + s1[0] = vmlsl_lane_s16(s1[0], vget_low_s16(in1), c, 3); + s1[1] = vmlsl_lane_s16(s1[1], vget_high_s16(in1), c, 3); +} + +static INLINE int16x8_t add_dct_const_round_shift_low_8( + const int32x4_t *const in0, const int32x4_t *const in1) { + int32x4_t sum[2]; + + sum[0] = vaddq_s32(in0[0], in1[0]); + sum[1] = vaddq_s32(in0[1], in1[1]); + return dct_const_round_shift_low_8(sum); +} + +static INLINE int16x8_t sub_dct_const_round_shift_low_8( + const int32x4_t *const in0, const int32x4_t *const in1) { + int32x4_t sum[2]; + + sum[0] = vsubq_s32(in0[0], in1[0]); + sum[1] = vsubq_s32(in0[1], in1[1]); + return dct_const_round_shift_low_8(sum); +} + +static INLINE void iadst8(int16x8_t *const io) { + const int16x4_t c0 = + create_s16x4_neon(cospi_2_64, cospi_30_64, cospi_10_64, cospi_22_64); + const int16x4_t c1 = + create_s16x4_neon(cospi_18_64, cospi_14_64, cospi_26_64, cospi_6_64); + const int16x4_t c2 = + create_s16x4_neon(cospi_16_64, 0, cospi_8_64, cospi_24_64); + int16x8_t x[8], t[4]; + int32x4_t s0[2], s1[2], s2[2], s3[2], s4[2], s5[2], s6[2], s7[2]; + + x[0] = io[7]; + x[1] = io[0]; + x[2] = io[5]; + x[3] = io[2]; + x[4] = io[3]; + x[5] = io[4]; + x[6] = io[1]; + x[7] = io[6]; + + // stage 1 + iadst_butterfly_lane_0_1_neon(x[0], x[1], c0, s0, s1); + iadst_butterfly_lane_2_3_neon(x[2], x[3], c0, s2, s3); + iadst_butterfly_lane_0_1_neon(x[4], x[5], c1, s4, s5); + iadst_butterfly_lane_2_3_neon(x[6], x[7], c1, s6, s7); + + x[0] = add_dct_const_round_shift_low_8(s0, s4); + x[1] = add_dct_const_round_shift_low_8(s1, s5); + x[2] = add_dct_const_round_shift_low_8(s2, s6); + x[3] = add_dct_const_round_shift_low_8(s3, s7); + x[4] = sub_dct_const_round_shift_low_8(s0, s4); + x[5] = sub_dct_const_round_shift_low_8(s1, s5); + x[6] = sub_dct_const_round_shift_low_8(s2, s6); + x[7] = sub_dct_const_round_shift_low_8(s3, s7); + + // stage 2 + t[0] = x[0]; + t[1] = x[1]; + t[2] = x[2]; + t[3] = x[3]; + iadst_butterfly_lane_2_3_neon(x[4], x[5], c2, s4, s5); + iadst_butterfly_lane_3_2_neon(x[7], x[6], c2, s7, s6); + + x[0] = vaddq_s16(t[0], t[2]); + x[1] = vaddq_s16(t[1], t[3]); + x[2] = vsubq_s16(t[0], t[2]); + x[3] = vsubq_s16(t[1], t[3]); + x[4] = add_dct_const_round_shift_low_8(s4, s6); + x[5] = add_dct_const_round_shift_low_8(s5, s7); + x[6] = sub_dct_const_round_shift_low_8(s4, s6); + x[7] = sub_dct_const_round_shift_low_8(s5, s7); + + // stage 3 + iadst_half_butterfly_neon(x + 2, c2); + iadst_half_butterfly_neon(x + 6, c2); + + io[0] = x[0]; + io[1] = vnegq_s16(x[4]); + io[2] = x[6]; + io[3] = vnegq_s16(x[2]); + io[4] = x[3]; + io[5] = vnegq_s16(x[7]); + io[6] = x[5]; + io[7] = vnegq_s16(x[1]); +} + +void vpx_iadst16x16_256_add_half1d(const void *const input, int16_t *output, + void *const dest, const int stride, + const int highbd_flag); + +typedef void (*iht_1d)(const void *const input, int16_t *output, + void *const dest, const int stride, + const int highbd_flag); + +typedef struct { + iht_1d cols, rows; // vertical and horizontal +} iht_2d; + +#endif // VPX_VP9_COMMON_ARM_NEON_VP9_IHT_NEON_H_ |