diff options
Diffstat (limited to 'media/libvpx/libvpx/vp9/encoder/x86/vp9_dct_intrin_sse2.c')
| -rw-r--r-- | media/libvpx/libvpx/vp9/encoder/x86/vp9_dct_intrin_sse2.c | 1537 |
1 files changed, 1537 insertions, 0 deletions
diff --git a/media/libvpx/libvpx/vp9/encoder/x86/vp9_dct_intrin_sse2.c b/media/libvpx/libvpx/vp9/encoder/x86/vp9_dct_intrin_sse2.c new file mode 100644 index 0000000000..e9943447fd --- /dev/null +++ b/media/libvpx/libvpx/vp9/encoder/x86/vp9_dct_intrin_sse2.c @@ -0,0 +1,1537 @@ +/* + * Copyright (c) 2012 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 <assert.h> +#include <emmintrin.h> // SSE2 + +#include "./vp9_rtcd.h" +#include "./vpx_dsp_rtcd.h" +#include "vpx_dsp/txfm_common.h" +#include "vpx_dsp/x86/bitdepth_conversion_sse2.h" +#include "vpx_dsp/x86/fwd_txfm_sse2.h" +#include "vpx_dsp/x86/transpose_sse2.h" +#include "vpx_dsp/x86/txfm_common_sse2.h" +#include "vpx_ports/mem.h" + +static INLINE void load_buffer_4x4(const int16_t *input, __m128i *in, + int stride) { + const __m128i k__nonzero_bias_a = _mm_setr_epi16(0, 1, 1, 1, 1, 1, 1, 1); + const __m128i k__nonzero_bias_b = _mm_setr_epi16(1, 0, 0, 0, 0, 0, 0, 0); + __m128i mask; + + in[0] = _mm_loadl_epi64((const __m128i *)(input + 0 * stride)); + in[1] = _mm_loadl_epi64((const __m128i *)(input + 1 * stride)); + in[2] = _mm_loadl_epi64((const __m128i *)(input + 2 * stride)); + in[3] = _mm_loadl_epi64((const __m128i *)(input + 3 * stride)); + + in[0] = _mm_slli_epi16(in[0], 4); + in[1] = _mm_slli_epi16(in[1], 4); + in[2] = _mm_slli_epi16(in[2], 4); + in[3] = _mm_slli_epi16(in[3], 4); + + mask = _mm_cmpeq_epi16(in[0], k__nonzero_bias_a); + in[0] = _mm_add_epi16(in[0], mask); + in[0] = _mm_add_epi16(in[0], k__nonzero_bias_b); +} + +static INLINE void write_buffer_4x4(tran_low_t *output, __m128i *res) { + const __m128i kOne = _mm_set1_epi16(1); + __m128i in01 = _mm_unpacklo_epi64(res[0], res[1]); + __m128i in23 = _mm_unpacklo_epi64(res[2], res[3]); + __m128i out01 = _mm_add_epi16(in01, kOne); + __m128i out23 = _mm_add_epi16(in23, kOne); + out01 = _mm_srai_epi16(out01, 2); + out23 = _mm_srai_epi16(out23, 2); + store_output(&out01, (output + 0 * 8)); + store_output(&out23, (output + 1 * 8)); +} + +static INLINE void transpose_4x4(__m128i *res) { + // Combine and transpose + // 00 01 02 03 20 21 22 23 + // 10 11 12 13 30 31 32 33 + const __m128i tr0_0 = _mm_unpacklo_epi16(res[0], res[1]); + const __m128i tr0_1 = _mm_unpackhi_epi16(res[0], res[1]); + + // 00 10 01 11 02 12 03 13 + // 20 30 21 31 22 32 23 33 + res[0] = _mm_unpacklo_epi32(tr0_0, tr0_1); + res[2] = _mm_unpackhi_epi32(tr0_0, tr0_1); + + // 00 10 20 30 01 11 21 31 + // 02 12 22 32 03 13 23 33 + // only use the first 4 16-bit integers + res[1] = _mm_unpackhi_epi64(res[0], res[0]); + res[3] = _mm_unpackhi_epi64(res[2], res[2]); +} + +static void fdct4_sse2(__m128i *in) { + const __m128i k__cospi_p16_p16 = _mm_set1_epi16(cospi_16_64); + const __m128i k__cospi_p16_m16 = pair_set_epi16(cospi_16_64, -cospi_16_64); + const __m128i k__cospi_p08_p24 = pair_set_epi16(cospi_8_64, cospi_24_64); + const __m128i k__cospi_p24_m08 = pair_set_epi16(cospi_24_64, -cospi_8_64); + const __m128i k__DCT_CONST_ROUNDING = _mm_set1_epi32(DCT_CONST_ROUNDING); + + __m128i u[4], v[4]; + u[0] = _mm_unpacklo_epi16(in[0], in[1]); + u[1] = _mm_unpacklo_epi16(in[3], in[2]); + + v[0] = _mm_add_epi16(u[0], u[1]); + v[1] = _mm_sub_epi16(u[0], u[1]); + + u[0] = _mm_madd_epi16(v[0], k__cospi_p16_p16); // 0 + u[1] = _mm_madd_epi16(v[0], k__cospi_p16_m16); // 2 + u[2] = _mm_madd_epi16(v[1], k__cospi_p08_p24); // 1 + u[3] = _mm_madd_epi16(v[1], k__cospi_p24_m08); // 3 + + v[0] = _mm_add_epi32(u[0], k__DCT_CONST_ROUNDING); + v[1] = _mm_add_epi32(u[1], k__DCT_CONST_ROUNDING); + v[2] = _mm_add_epi32(u[2], k__DCT_CONST_ROUNDING); + v[3] = _mm_add_epi32(u[3], k__DCT_CONST_ROUNDING); + u[0] = _mm_srai_epi32(v[0], DCT_CONST_BITS); + u[1] = _mm_srai_epi32(v[1], DCT_CONST_BITS); + u[2] = _mm_srai_epi32(v[2], DCT_CONST_BITS); + u[3] = _mm_srai_epi32(v[3], DCT_CONST_BITS); + + in[0] = _mm_packs_epi32(u[0], u[1]); + in[1] = _mm_packs_epi32(u[2], u[3]); + transpose_4x4(in); +} + +static void fadst4_sse2(__m128i *in) { + const __m128i k__sinpi_p01_p02 = pair_set_epi16(sinpi_1_9, sinpi_2_9); + const __m128i k__sinpi_p04_m01 = pair_set_epi16(sinpi_4_9, -sinpi_1_9); + const __m128i k__sinpi_p03_p04 = pair_set_epi16(sinpi_3_9, sinpi_4_9); + const __m128i k__sinpi_m03_p02 = pair_set_epi16(-sinpi_3_9, sinpi_2_9); + const __m128i k__sinpi_p03_p03 = _mm_set1_epi16((int16_t)sinpi_3_9); + const __m128i kZero = _mm_setzero_si128(); + const __m128i k__DCT_CONST_ROUNDING = _mm_set1_epi32(DCT_CONST_ROUNDING); + __m128i u[8], v[8]; + __m128i in7 = _mm_add_epi16(in[0], in[1]); + + u[0] = _mm_unpacklo_epi16(in[0], in[1]); + u[1] = _mm_unpacklo_epi16(in[2], in[3]); + u[2] = _mm_unpacklo_epi16(in7, kZero); + u[3] = _mm_unpacklo_epi16(in[2], kZero); + u[4] = _mm_unpacklo_epi16(in[3], kZero); + + v[0] = _mm_madd_epi16(u[0], k__sinpi_p01_p02); // s0 + s2 + v[1] = _mm_madd_epi16(u[1], k__sinpi_p03_p04); // s4 + s5 + v[2] = _mm_madd_epi16(u[2], k__sinpi_p03_p03); // x1 + v[3] = _mm_madd_epi16(u[0], k__sinpi_p04_m01); // s1 - s3 + v[4] = _mm_madd_epi16(u[1], k__sinpi_m03_p02); // -s4 + s6 + v[5] = _mm_madd_epi16(u[3], k__sinpi_p03_p03); // s4 + v[6] = _mm_madd_epi16(u[4], k__sinpi_p03_p03); + + u[0] = _mm_add_epi32(v[0], v[1]); + u[1] = _mm_sub_epi32(v[2], v[6]); + u[2] = _mm_add_epi32(v[3], v[4]); + u[3] = _mm_sub_epi32(u[2], u[0]); + u[4] = _mm_slli_epi32(v[5], 2); + u[5] = _mm_sub_epi32(u[4], v[5]); + u[6] = _mm_add_epi32(u[3], u[5]); + + v[0] = _mm_add_epi32(u[0], k__DCT_CONST_ROUNDING); + v[1] = _mm_add_epi32(u[1], k__DCT_CONST_ROUNDING); + v[2] = _mm_add_epi32(u[2], k__DCT_CONST_ROUNDING); + v[3] = _mm_add_epi32(u[6], k__DCT_CONST_ROUNDING); + + u[0] = _mm_srai_epi32(v[0], DCT_CONST_BITS); + u[1] = _mm_srai_epi32(v[1], DCT_CONST_BITS); + u[2] = _mm_srai_epi32(v[2], DCT_CONST_BITS); + u[3] = _mm_srai_epi32(v[3], DCT_CONST_BITS); + + in[0] = _mm_packs_epi32(u[0], u[2]); + in[1] = _mm_packs_epi32(u[1], u[3]); + transpose_4x4(in); +} + +void vp9_fht4x4_sse2(const int16_t *input, tran_low_t *output, int stride, + int tx_type) { + __m128i in[4]; + + switch (tx_type) { + case DCT_DCT: vpx_fdct4x4_sse2(input, output, stride); break; + case ADST_DCT: + load_buffer_4x4(input, in, stride); + fadst4_sse2(in); + fdct4_sse2(in); + write_buffer_4x4(output, in); + break; + case DCT_ADST: + load_buffer_4x4(input, in, stride); + fdct4_sse2(in); + fadst4_sse2(in); + write_buffer_4x4(output, in); + break; + default: + assert(tx_type == ADST_ADST); + load_buffer_4x4(input, in, stride); + fadst4_sse2(in); + fadst4_sse2(in); + write_buffer_4x4(output, in); + break; + } +} + +// load 8x8 array +static INLINE void load_buffer_8x8(const int16_t *input, __m128i *in, + int stride) { + in[0] = _mm_load_si128((const __m128i *)(input + 0 * stride)); + in[1] = _mm_load_si128((const __m128i *)(input + 1 * stride)); + in[2] = _mm_load_si128((const __m128i *)(input + 2 * stride)); + in[3] = _mm_load_si128((const __m128i *)(input + 3 * stride)); + in[4] = _mm_load_si128((const __m128i *)(input + 4 * stride)); + in[5] = _mm_load_si128((const __m128i *)(input + 5 * stride)); + in[6] = _mm_load_si128((const __m128i *)(input + 6 * stride)); + in[7] = _mm_load_si128((const __m128i *)(input + 7 * stride)); + + in[0] = _mm_slli_epi16(in[0], 2); + in[1] = _mm_slli_epi16(in[1], 2); + in[2] = _mm_slli_epi16(in[2], 2); + in[3] = _mm_slli_epi16(in[3], 2); + in[4] = _mm_slli_epi16(in[4], 2); + in[5] = _mm_slli_epi16(in[5], 2); + in[6] = _mm_slli_epi16(in[6], 2); + in[7] = _mm_slli_epi16(in[7], 2); +} + +// right shift and rounding +static INLINE void right_shift_8x8(__m128i *res, const int bit) { + __m128i sign0 = _mm_srai_epi16(res[0], 15); + __m128i sign1 = _mm_srai_epi16(res[1], 15); + __m128i sign2 = _mm_srai_epi16(res[2], 15); + __m128i sign3 = _mm_srai_epi16(res[3], 15); + __m128i sign4 = _mm_srai_epi16(res[4], 15); + __m128i sign5 = _mm_srai_epi16(res[5], 15); + __m128i sign6 = _mm_srai_epi16(res[6], 15); + __m128i sign7 = _mm_srai_epi16(res[7], 15); + + if (bit == 2) { + const __m128i const_rounding = _mm_set1_epi16(1); + res[0] = _mm_add_epi16(res[0], const_rounding); + res[1] = _mm_add_epi16(res[1], const_rounding); + res[2] = _mm_add_epi16(res[2], const_rounding); + res[3] = _mm_add_epi16(res[3], const_rounding); + res[4] = _mm_add_epi16(res[4], const_rounding); + res[5] = _mm_add_epi16(res[5], const_rounding); + res[6] = _mm_add_epi16(res[6], const_rounding); + res[7] = _mm_add_epi16(res[7], const_rounding); + } + + res[0] = _mm_sub_epi16(res[0], sign0); + res[1] = _mm_sub_epi16(res[1], sign1); + res[2] = _mm_sub_epi16(res[2], sign2); + res[3] = _mm_sub_epi16(res[3], sign3); + res[4] = _mm_sub_epi16(res[4], sign4); + res[5] = _mm_sub_epi16(res[5], sign5); + res[6] = _mm_sub_epi16(res[6], sign6); + res[7] = _mm_sub_epi16(res[7], sign7); + + if (bit == 1) { + res[0] = _mm_srai_epi16(res[0], 1); + res[1] = _mm_srai_epi16(res[1], 1); + res[2] = _mm_srai_epi16(res[2], 1); + res[3] = _mm_srai_epi16(res[3], 1); + res[4] = _mm_srai_epi16(res[4], 1); + res[5] = _mm_srai_epi16(res[5], 1); + res[6] = _mm_srai_epi16(res[6], 1); + res[7] = _mm_srai_epi16(res[7], 1); + } else { + res[0] = _mm_srai_epi16(res[0], 2); + res[1] = _mm_srai_epi16(res[1], 2); + res[2] = _mm_srai_epi16(res[2], 2); + res[3] = _mm_srai_epi16(res[3], 2); + res[4] = _mm_srai_epi16(res[4], 2); + res[5] = _mm_srai_epi16(res[5], 2); + res[6] = _mm_srai_epi16(res[6], 2); + res[7] = _mm_srai_epi16(res[7], 2); + } +} + +// write 8x8 array +static INLINE void write_buffer_8x8(tran_low_t *output, __m128i *res, + int stride) { + store_output(&res[0], (output + 0 * stride)); + store_output(&res[1], (output + 1 * stride)); + store_output(&res[2], (output + 2 * stride)); + store_output(&res[3], (output + 3 * stride)); + store_output(&res[4], (output + 4 * stride)); + store_output(&res[5], (output + 5 * stride)); + store_output(&res[6], (output + 6 * stride)); + store_output(&res[7], (output + 7 * stride)); +} + +static void fdct8_sse2(__m128i *in) { + // constants + const __m128i k__cospi_p16_p16 = _mm_set1_epi16(cospi_16_64); + const __m128i k__cospi_p16_m16 = pair_set_epi16(cospi_16_64, -cospi_16_64); + const __m128i k__cospi_p24_p08 = pair_set_epi16(cospi_24_64, cospi_8_64); + const __m128i k__cospi_m08_p24 = pair_set_epi16(-cospi_8_64, cospi_24_64); + const __m128i k__cospi_p28_p04 = pair_set_epi16(cospi_28_64, cospi_4_64); + const __m128i k__cospi_m04_p28 = pair_set_epi16(-cospi_4_64, cospi_28_64); + const __m128i k__cospi_p12_p20 = pair_set_epi16(cospi_12_64, cospi_20_64); + const __m128i k__cospi_m20_p12 = pair_set_epi16(-cospi_20_64, cospi_12_64); + const __m128i k__DCT_CONST_ROUNDING = _mm_set1_epi32(DCT_CONST_ROUNDING); + __m128i u0, u1, u2, u3, u4, u5, u6, u7; + __m128i v0, v1, v2, v3, v4, v5, v6, v7; + __m128i s0, s1, s2, s3, s4, s5, s6, s7; + + // stage 1 + s0 = _mm_add_epi16(in[0], in[7]); + s1 = _mm_add_epi16(in[1], in[6]); + s2 = _mm_add_epi16(in[2], in[5]); + s3 = _mm_add_epi16(in[3], in[4]); + s4 = _mm_sub_epi16(in[3], in[4]); + s5 = _mm_sub_epi16(in[2], in[5]); + s6 = _mm_sub_epi16(in[1], in[6]); + s7 = _mm_sub_epi16(in[0], in[7]); + + u0 = _mm_add_epi16(s0, s3); + u1 = _mm_add_epi16(s1, s2); + u2 = _mm_sub_epi16(s1, s2); + u3 = _mm_sub_epi16(s0, s3); + // interleave and perform butterfly multiplication/addition + v0 = _mm_unpacklo_epi16(u0, u1); + v1 = _mm_unpackhi_epi16(u0, u1); + v2 = _mm_unpacklo_epi16(u2, u3); + v3 = _mm_unpackhi_epi16(u2, u3); + + u0 = _mm_madd_epi16(v0, k__cospi_p16_p16); + u1 = _mm_madd_epi16(v1, k__cospi_p16_p16); + u2 = _mm_madd_epi16(v0, k__cospi_p16_m16); + u3 = _mm_madd_epi16(v1, k__cospi_p16_m16); + u4 = _mm_madd_epi16(v2, k__cospi_p24_p08); + u5 = _mm_madd_epi16(v3, k__cospi_p24_p08); + u6 = _mm_madd_epi16(v2, k__cospi_m08_p24); + u7 = _mm_madd_epi16(v3, k__cospi_m08_p24); + + // shift and rounding + v0 = _mm_add_epi32(u0, k__DCT_CONST_ROUNDING); + v1 = _mm_add_epi32(u1, k__DCT_CONST_ROUNDING); + v2 = _mm_add_epi32(u2, k__DCT_CONST_ROUNDING); + v3 = _mm_add_epi32(u3, k__DCT_CONST_ROUNDING); + v4 = _mm_add_epi32(u4, k__DCT_CONST_ROUNDING); + v5 = _mm_add_epi32(u5, k__DCT_CONST_ROUNDING); + v6 = _mm_add_epi32(u6, k__DCT_CONST_ROUNDING); + v7 = _mm_add_epi32(u7, k__DCT_CONST_ROUNDING); + + u0 = _mm_srai_epi32(v0, DCT_CONST_BITS); + u1 = _mm_srai_epi32(v1, DCT_CONST_BITS); + u2 = _mm_srai_epi32(v2, DCT_CONST_BITS); + u3 = _mm_srai_epi32(v3, DCT_CONST_BITS); + u4 = _mm_srai_epi32(v4, DCT_CONST_BITS); + u5 = _mm_srai_epi32(v5, DCT_CONST_BITS); + u6 = _mm_srai_epi32(v6, DCT_CONST_BITS); + u7 = _mm_srai_epi32(v7, DCT_CONST_BITS); + + in[0] = _mm_packs_epi32(u0, u1); + in[2] = _mm_packs_epi32(u4, u5); + in[4] = _mm_packs_epi32(u2, u3); + in[6] = _mm_packs_epi32(u6, u7); + + // stage 2 + // interleave and perform butterfly multiplication/addition + u0 = _mm_unpacklo_epi16(s6, s5); + u1 = _mm_unpackhi_epi16(s6, s5); + v0 = _mm_madd_epi16(u0, k__cospi_p16_m16); + v1 = _mm_madd_epi16(u1, k__cospi_p16_m16); + v2 = _mm_madd_epi16(u0, k__cospi_p16_p16); + v3 = _mm_madd_epi16(u1, k__cospi_p16_p16); + + // shift and rounding + u0 = _mm_add_epi32(v0, k__DCT_CONST_ROUNDING); + u1 = _mm_add_epi32(v1, k__DCT_CONST_ROUNDING); + u2 = _mm_add_epi32(v2, k__DCT_CONST_ROUNDING); + u3 = _mm_add_epi32(v3, k__DCT_CONST_ROUNDING); + + v0 = _mm_srai_epi32(u0, DCT_CONST_BITS); + v1 = _mm_srai_epi32(u1, DCT_CONST_BITS); + v2 = _mm_srai_epi32(u2, DCT_CONST_BITS); + v3 = _mm_srai_epi32(u3, DCT_CONST_BITS); + + u0 = _mm_packs_epi32(v0, v1); + u1 = _mm_packs_epi32(v2, v3); + + // stage 3 + s0 = _mm_add_epi16(s4, u0); + s1 = _mm_sub_epi16(s4, u0); + s2 = _mm_sub_epi16(s7, u1); + s3 = _mm_add_epi16(s7, u1); + + // stage 4 + u0 = _mm_unpacklo_epi16(s0, s3); + u1 = _mm_unpackhi_epi16(s0, s3); + u2 = _mm_unpacklo_epi16(s1, s2); + u3 = _mm_unpackhi_epi16(s1, s2); + + v0 = _mm_madd_epi16(u0, k__cospi_p28_p04); + v1 = _mm_madd_epi16(u1, k__cospi_p28_p04); + v2 = _mm_madd_epi16(u2, k__cospi_p12_p20); + v3 = _mm_madd_epi16(u3, k__cospi_p12_p20); + v4 = _mm_madd_epi16(u2, k__cospi_m20_p12); + v5 = _mm_madd_epi16(u3, k__cospi_m20_p12); + v6 = _mm_madd_epi16(u0, k__cospi_m04_p28); + v7 = _mm_madd_epi16(u1, k__cospi_m04_p28); + + // shift and rounding + u0 = _mm_add_epi32(v0, k__DCT_CONST_ROUNDING); + u1 = _mm_add_epi32(v1, k__DCT_CONST_ROUNDING); + u2 = _mm_add_epi32(v2, k__DCT_CONST_ROUNDING); + u3 = _mm_add_epi32(v3, k__DCT_CONST_ROUNDING); + u4 = _mm_add_epi32(v4, k__DCT_CONST_ROUNDING); + u5 = _mm_add_epi32(v5, k__DCT_CONST_ROUNDING); + u6 = _mm_add_epi32(v6, k__DCT_CONST_ROUNDING); + u7 = _mm_add_epi32(v7, k__DCT_CONST_ROUNDING); + + v0 = _mm_srai_epi32(u0, DCT_CONST_BITS); + v1 = _mm_srai_epi32(u1, DCT_CONST_BITS); + v2 = _mm_srai_epi32(u2, DCT_CONST_BITS); + v3 = _mm_srai_epi32(u3, DCT_CONST_BITS); + v4 = _mm_srai_epi32(u4, DCT_CONST_BITS); + v5 = _mm_srai_epi32(u5, DCT_CONST_BITS); + v6 = _mm_srai_epi32(u6, DCT_CONST_BITS); + v7 = _mm_srai_epi32(u7, DCT_CONST_BITS); + + in[1] = _mm_packs_epi32(v0, v1); + in[3] = _mm_packs_epi32(v4, v5); + in[5] = _mm_packs_epi32(v2, v3); + in[7] = _mm_packs_epi32(v6, v7); + + // transpose + transpose_16bit_8x8(in, in); +} + +static void fadst8_sse2(__m128i *in) { + // Constants + const __m128i k__cospi_p02_p30 = pair_set_epi16(cospi_2_64, cospi_30_64); + const __m128i k__cospi_p30_m02 = pair_set_epi16(cospi_30_64, -cospi_2_64); + const __m128i k__cospi_p10_p22 = pair_set_epi16(cospi_10_64, cospi_22_64); + const __m128i k__cospi_p22_m10 = pair_set_epi16(cospi_22_64, -cospi_10_64); + const __m128i k__cospi_p18_p14 = pair_set_epi16(cospi_18_64, cospi_14_64); + const __m128i k__cospi_p14_m18 = pair_set_epi16(cospi_14_64, -cospi_18_64); + const __m128i k__cospi_p26_p06 = pair_set_epi16(cospi_26_64, cospi_6_64); + const __m128i k__cospi_p06_m26 = pair_set_epi16(cospi_6_64, -cospi_26_64); + const __m128i k__cospi_p08_p24 = pair_set_epi16(cospi_8_64, cospi_24_64); + const __m128i k__cospi_p24_m08 = pair_set_epi16(cospi_24_64, -cospi_8_64); + const __m128i k__cospi_m24_p08 = pair_set_epi16(-cospi_24_64, cospi_8_64); + const __m128i k__cospi_p16_m16 = pair_set_epi16(cospi_16_64, -cospi_16_64); + const __m128i k__cospi_p16_p16 = _mm_set1_epi16(cospi_16_64); + const __m128i k__const_0 = _mm_setzero_si128(); + const __m128i k__DCT_CONST_ROUNDING = _mm_set1_epi32(DCT_CONST_ROUNDING); + + __m128i u0, u1, u2, u3, u4, u5, u6, u7, u8, u9, u10, u11, u12, u13, u14, u15; + __m128i v0, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15; + __m128i w0, w1, w2, w3, w4, w5, w6, w7, w8, w9, w10, w11, w12, w13, w14, w15; + __m128i s0, s1, s2, s3, s4, s5, s6, s7; + __m128i in0, in1, in2, in3, in4, in5, in6, in7; + + // properly aligned for butterfly input + in0 = in[7]; + in1 = in[0]; + in2 = in[5]; + in3 = in[2]; + in4 = in[3]; + in5 = in[4]; + in6 = in[1]; + in7 = in[6]; + + // column transformation + // stage 1 + // interleave and multiply/add into 32-bit integer + s0 = _mm_unpacklo_epi16(in0, in1); + s1 = _mm_unpackhi_epi16(in0, in1); + s2 = _mm_unpacklo_epi16(in2, in3); + s3 = _mm_unpackhi_epi16(in2, in3); + s4 = _mm_unpacklo_epi16(in4, in5); + s5 = _mm_unpackhi_epi16(in4, in5); + s6 = _mm_unpacklo_epi16(in6, in7); + s7 = _mm_unpackhi_epi16(in6, in7); + + u0 = _mm_madd_epi16(s0, k__cospi_p02_p30); + u1 = _mm_madd_epi16(s1, k__cospi_p02_p30); + u2 = _mm_madd_epi16(s0, k__cospi_p30_m02); + u3 = _mm_madd_epi16(s1, k__cospi_p30_m02); + u4 = _mm_madd_epi16(s2, k__cospi_p10_p22); + u5 = _mm_madd_epi16(s3, k__cospi_p10_p22); + u6 = _mm_madd_epi16(s2, k__cospi_p22_m10); + u7 = _mm_madd_epi16(s3, k__cospi_p22_m10); + u8 = _mm_madd_epi16(s4, k__cospi_p18_p14); + u9 = _mm_madd_epi16(s5, k__cospi_p18_p14); + u10 = _mm_madd_epi16(s4, k__cospi_p14_m18); + u11 = _mm_madd_epi16(s5, k__cospi_p14_m18); + u12 = _mm_madd_epi16(s6, k__cospi_p26_p06); + u13 = _mm_madd_epi16(s7, k__cospi_p26_p06); + u14 = _mm_madd_epi16(s6, k__cospi_p06_m26); + u15 = _mm_madd_epi16(s7, k__cospi_p06_m26); + + // addition + w0 = _mm_add_epi32(u0, u8); + w1 = _mm_add_epi32(u1, u9); + w2 = _mm_add_epi32(u2, u10); + w3 = _mm_add_epi32(u3, u11); + w4 = _mm_add_epi32(u4, u12); + w5 = _mm_add_epi32(u5, u13); + w6 = _mm_add_epi32(u6, u14); + w7 = _mm_add_epi32(u7, u15); + w8 = _mm_sub_epi32(u0, u8); + w9 = _mm_sub_epi32(u1, u9); + w10 = _mm_sub_epi32(u2, u10); + w11 = _mm_sub_epi32(u3, u11); + w12 = _mm_sub_epi32(u4, u12); + w13 = _mm_sub_epi32(u5, u13); + w14 = _mm_sub_epi32(u6, u14); + w15 = _mm_sub_epi32(u7, u15); + + // shift and rounding + v0 = _mm_add_epi32(w0, k__DCT_CONST_ROUNDING); + v1 = _mm_add_epi32(w1, k__DCT_CONST_ROUNDING); + v2 = _mm_add_epi32(w2, k__DCT_CONST_ROUNDING); + v3 = _mm_add_epi32(w3, k__DCT_CONST_ROUNDING); + v4 = _mm_add_epi32(w4, k__DCT_CONST_ROUNDING); + v5 = _mm_add_epi32(w5, k__DCT_CONST_ROUNDING); + v6 = _mm_add_epi32(w6, k__DCT_CONST_ROUNDING); + v7 = _mm_add_epi32(w7, k__DCT_CONST_ROUNDING); + v8 = _mm_add_epi32(w8, k__DCT_CONST_ROUNDING); + v9 = _mm_add_epi32(w9, k__DCT_CONST_ROUNDING); + v10 = _mm_add_epi32(w10, k__DCT_CONST_ROUNDING); + v11 = _mm_add_epi32(w11, k__DCT_CONST_ROUNDING); + v12 = _mm_add_epi32(w12, k__DCT_CONST_ROUNDING); + v13 = _mm_add_epi32(w13, k__DCT_CONST_ROUNDING); + v14 = _mm_add_epi32(w14, k__DCT_CONST_ROUNDING); + v15 = _mm_add_epi32(w15, k__DCT_CONST_ROUNDING); + + u0 = _mm_srai_epi32(v0, DCT_CONST_BITS); + u1 = _mm_srai_epi32(v1, DCT_CONST_BITS); + u2 = _mm_srai_epi32(v2, DCT_CONST_BITS); + u3 = _mm_srai_epi32(v3, DCT_CONST_BITS); + u4 = _mm_srai_epi32(v4, DCT_CONST_BITS); + u5 = _mm_srai_epi32(v5, DCT_CONST_BITS); + u6 = _mm_srai_epi32(v6, DCT_CONST_BITS); + u7 = _mm_srai_epi32(v7, DCT_CONST_BITS); + u8 = _mm_srai_epi32(v8, DCT_CONST_BITS); + u9 = _mm_srai_epi32(v9, DCT_CONST_BITS); + u10 = _mm_srai_epi32(v10, DCT_CONST_BITS); + u11 = _mm_srai_epi32(v11, DCT_CONST_BITS); + u12 = _mm_srai_epi32(v12, DCT_CONST_BITS); + u13 = _mm_srai_epi32(v13, DCT_CONST_BITS); + u14 = _mm_srai_epi32(v14, DCT_CONST_BITS); + u15 = _mm_srai_epi32(v15, DCT_CONST_BITS); + + // back to 16-bit and pack 8 integers into __m128i + in[0] = _mm_packs_epi32(u0, u1); + in[1] = _mm_packs_epi32(u2, u3); + in[2] = _mm_packs_epi32(u4, u5); + in[3] = _mm_packs_epi32(u6, u7); + in[4] = _mm_packs_epi32(u8, u9); + in[5] = _mm_packs_epi32(u10, u11); + in[6] = _mm_packs_epi32(u12, u13); + in[7] = _mm_packs_epi32(u14, u15); + + // stage 2 + s0 = _mm_add_epi16(in[0], in[2]); + s1 = _mm_add_epi16(in[1], in[3]); + s2 = _mm_sub_epi16(in[0], in[2]); + s3 = _mm_sub_epi16(in[1], in[3]); + u0 = _mm_unpacklo_epi16(in[4], in[5]); + u1 = _mm_unpackhi_epi16(in[4], in[5]); + u2 = _mm_unpacklo_epi16(in[6], in[7]); + u3 = _mm_unpackhi_epi16(in[6], in[7]); + + v0 = _mm_madd_epi16(u0, k__cospi_p08_p24); + v1 = _mm_madd_epi16(u1, k__cospi_p08_p24); + v2 = _mm_madd_epi16(u0, k__cospi_p24_m08); + v3 = _mm_madd_epi16(u1, k__cospi_p24_m08); + v4 = _mm_madd_epi16(u2, k__cospi_m24_p08); + v5 = _mm_madd_epi16(u3, k__cospi_m24_p08); + v6 = _mm_madd_epi16(u2, k__cospi_p08_p24); + v7 = _mm_madd_epi16(u3, k__cospi_p08_p24); + + w0 = _mm_add_epi32(v0, v4); + w1 = _mm_add_epi32(v1, v5); + w2 = _mm_add_epi32(v2, v6); + w3 = _mm_add_epi32(v3, v7); + w4 = _mm_sub_epi32(v0, v4); + w5 = _mm_sub_epi32(v1, v5); + w6 = _mm_sub_epi32(v2, v6); + w7 = _mm_sub_epi32(v3, v7); + + v0 = _mm_add_epi32(w0, k__DCT_CONST_ROUNDING); + v1 = _mm_add_epi32(w1, k__DCT_CONST_ROUNDING); + v2 = _mm_add_epi32(w2, k__DCT_CONST_ROUNDING); + v3 = _mm_add_epi32(w3, k__DCT_CONST_ROUNDING); + v4 = _mm_add_epi32(w4, k__DCT_CONST_ROUNDING); + v5 = _mm_add_epi32(w5, k__DCT_CONST_ROUNDING); + v6 = _mm_add_epi32(w6, k__DCT_CONST_ROUNDING); + v7 = _mm_add_epi32(w7, k__DCT_CONST_ROUNDING); + + u0 = _mm_srai_epi32(v0, DCT_CONST_BITS); + u1 = _mm_srai_epi32(v1, DCT_CONST_BITS); + u2 = _mm_srai_epi32(v2, DCT_CONST_BITS); + u3 = _mm_srai_epi32(v3, DCT_CONST_BITS); + u4 = _mm_srai_epi32(v4, DCT_CONST_BITS); + u5 = _mm_srai_epi32(v5, DCT_CONST_BITS); + u6 = _mm_srai_epi32(v6, DCT_CONST_BITS); + u7 = _mm_srai_epi32(v7, DCT_CONST_BITS); + + // back to 16-bit intergers + s4 = _mm_packs_epi32(u0, u1); + s5 = _mm_packs_epi32(u2, u3); + s6 = _mm_packs_epi32(u4, u5); + s7 = _mm_packs_epi32(u6, u7); + + // stage 3 + u0 = _mm_unpacklo_epi16(s2, s3); + u1 = _mm_unpackhi_epi16(s2, s3); + u2 = _mm_unpacklo_epi16(s6, s7); + u3 = _mm_unpackhi_epi16(s6, s7); + + v0 = _mm_madd_epi16(u0, k__cospi_p16_p16); + v1 = _mm_madd_epi16(u1, k__cospi_p16_p16); + v2 = _mm_madd_epi16(u0, k__cospi_p16_m16); + v3 = _mm_madd_epi16(u1, k__cospi_p16_m16); + v4 = _mm_madd_epi16(u2, k__cospi_p16_p16); + v5 = _mm_madd_epi16(u3, k__cospi_p16_p16); + v6 = _mm_madd_epi16(u2, k__cospi_p16_m16); + v7 = _mm_madd_epi16(u3, k__cospi_p16_m16); + + u0 = _mm_add_epi32(v0, k__DCT_CONST_ROUNDING); + u1 = _mm_add_epi32(v1, k__DCT_CONST_ROUNDING); + u2 = _mm_add_epi32(v2, k__DCT_CONST_ROUNDING); + u3 = _mm_add_epi32(v3, k__DCT_CONST_ROUNDING); + u4 = _mm_add_epi32(v4, k__DCT_CONST_ROUNDING); + u5 = _mm_add_epi32(v5, k__DCT_CONST_ROUNDING); + u6 = _mm_add_epi32(v6, k__DCT_CONST_ROUNDING); + u7 = _mm_add_epi32(v7, k__DCT_CONST_ROUNDING); + + v0 = _mm_srai_epi32(u0, DCT_CONST_BITS); + v1 = _mm_srai_epi32(u1, DCT_CONST_BITS); + v2 = _mm_srai_epi32(u2, DCT_CONST_BITS); + v3 = _mm_srai_epi32(u3, DCT_CONST_BITS); + v4 = _mm_srai_epi32(u4, DCT_CONST_BITS); + v5 = _mm_srai_epi32(u5, DCT_CONST_BITS); + v6 = _mm_srai_epi32(u6, DCT_CONST_BITS); + v7 = _mm_srai_epi32(u7, DCT_CONST_BITS); + + s2 = _mm_packs_epi32(v0, v1); + s3 = _mm_packs_epi32(v2, v3); + s6 = _mm_packs_epi32(v4, v5); + s7 = _mm_packs_epi32(v6, v7); + + // FIXME(jingning): do subtract using bit inversion? + in[0] = s0; + in[1] = _mm_sub_epi16(k__const_0, s4); + in[2] = s6; + in[3] = _mm_sub_epi16(k__const_0, s2); + in[4] = s3; + in[5] = _mm_sub_epi16(k__const_0, s7); + in[6] = s5; + in[7] = _mm_sub_epi16(k__const_0, s1); + + // transpose + transpose_16bit_8x8(in, in); +} + +void vp9_fht8x8_sse2(const int16_t *input, tran_low_t *output, int stride, + int tx_type) { + __m128i in[8]; + + switch (tx_type) { + case DCT_DCT: vpx_fdct8x8_sse2(input, output, stride); break; + case ADST_DCT: + load_buffer_8x8(input, in, stride); + fadst8_sse2(in); + fdct8_sse2(in); + right_shift_8x8(in, 1); + write_buffer_8x8(output, in, 8); + break; + case DCT_ADST: + load_buffer_8x8(input, in, stride); + fdct8_sse2(in); + fadst8_sse2(in); + right_shift_8x8(in, 1); + write_buffer_8x8(output, in, 8); + break; + default: + assert(tx_type == ADST_ADST); + load_buffer_8x8(input, in, stride); + fadst8_sse2(in); + fadst8_sse2(in); + right_shift_8x8(in, 1); + write_buffer_8x8(output, in, 8); + break; + } +} + +static INLINE void load_buffer_16x16(const int16_t *input, __m128i *in0, + __m128i *in1, int stride) { + // load first 8 columns + load_buffer_8x8(input, in0, stride); + load_buffer_8x8(input + 8 * stride, in0 + 8, stride); + + input += 8; + // load second 8 columns + load_buffer_8x8(input, in1, stride); + load_buffer_8x8(input + 8 * stride, in1 + 8, stride); +} + +static INLINE void write_buffer_16x16(tran_low_t *output, __m128i *in0, + __m128i *in1, int stride) { + // write first 8 columns + write_buffer_8x8(output, in0, stride); + write_buffer_8x8(output + 8 * stride, in0 + 8, stride); + // write second 8 columns + output += 8; + write_buffer_8x8(output, in1, stride); + write_buffer_8x8(output + 8 * stride, in1 + 8, stride); +} + +static INLINE void right_shift_16x16(__m128i *res0, __m128i *res1) { + // perform rounding operations + right_shift_8x8(res0, 2); + right_shift_8x8(res0 + 8, 2); + right_shift_8x8(res1, 2); + right_shift_8x8(res1 + 8, 2); +} + +static void fdct16_8col(__m128i *in) { + // perform 16x16 1-D DCT for 8 columns + __m128i i[8], s[8], p[8], t[8], u[16], v[16]; + const __m128i k__cospi_p16_p16 = _mm_set1_epi16(cospi_16_64); + const __m128i k__cospi_p16_m16 = pair_set_epi16(cospi_16_64, -cospi_16_64); + const __m128i k__cospi_m16_p16 = pair_set_epi16(-cospi_16_64, cospi_16_64); + const __m128i k__cospi_p24_p08 = pair_set_epi16(cospi_24_64, cospi_8_64); + const __m128i k__cospi_p08_m24 = pair_set_epi16(cospi_8_64, -cospi_24_64); + const __m128i k__cospi_m08_p24 = pair_set_epi16(-cospi_8_64, cospi_24_64); + const __m128i k__cospi_p28_p04 = pair_set_epi16(cospi_28_64, cospi_4_64); + const __m128i k__cospi_m04_p28 = pair_set_epi16(-cospi_4_64, cospi_28_64); + const __m128i k__cospi_p12_p20 = pair_set_epi16(cospi_12_64, cospi_20_64); + const __m128i k__cospi_m20_p12 = pair_set_epi16(-cospi_20_64, cospi_12_64); + const __m128i k__cospi_p30_p02 = pair_set_epi16(cospi_30_64, cospi_2_64); + const __m128i k__cospi_p14_p18 = pair_set_epi16(cospi_14_64, cospi_18_64); + const __m128i k__cospi_m02_p30 = pair_set_epi16(-cospi_2_64, cospi_30_64); + const __m128i k__cospi_m18_p14 = pair_set_epi16(-cospi_18_64, cospi_14_64); + const __m128i k__cospi_p22_p10 = pair_set_epi16(cospi_22_64, cospi_10_64); + const __m128i k__cospi_p06_p26 = pair_set_epi16(cospi_6_64, cospi_26_64); + const __m128i k__cospi_m10_p22 = pair_set_epi16(-cospi_10_64, cospi_22_64); + const __m128i k__cospi_m26_p06 = pair_set_epi16(-cospi_26_64, cospi_6_64); + const __m128i k__DCT_CONST_ROUNDING = _mm_set1_epi32(DCT_CONST_ROUNDING); + + // stage 1 + i[0] = _mm_add_epi16(in[0], in[15]); + i[1] = _mm_add_epi16(in[1], in[14]); + i[2] = _mm_add_epi16(in[2], in[13]); + i[3] = _mm_add_epi16(in[3], in[12]); + i[4] = _mm_add_epi16(in[4], in[11]); + i[5] = _mm_add_epi16(in[5], in[10]); + i[6] = _mm_add_epi16(in[6], in[9]); + i[7] = _mm_add_epi16(in[7], in[8]); + + s[0] = _mm_sub_epi16(in[7], in[8]); + s[1] = _mm_sub_epi16(in[6], in[9]); + s[2] = _mm_sub_epi16(in[5], in[10]); + s[3] = _mm_sub_epi16(in[4], in[11]); + s[4] = _mm_sub_epi16(in[3], in[12]); + s[5] = _mm_sub_epi16(in[2], in[13]); + s[6] = _mm_sub_epi16(in[1], in[14]); + s[7] = _mm_sub_epi16(in[0], in[15]); + + p[0] = _mm_add_epi16(i[0], i[7]); + p[1] = _mm_add_epi16(i[1], i[6]); + p[2] = _mm_add_epi16(i[2], i[5]); + p[3] = _mm_add_epi16(i[3], i[4]); + p[4] = _mm_sub_epi16(i[3], i[4]); + p[5] = _mm_sub_epi16(i[2], i[5]); + p[6] = _mm_sub_epi16(i[1], i[6]); + p[7] = _mm_sub_epi16(i[0], i[7]); + + u[0] = _mm_add_epi16(p[0], p[3]); + u[1] = _mm_add_epi16(p[1], p[2]); + u[2] = _mm_sub_epi16(p[1], p[2]); + u[3] = _mm_sub_epi16(p[0], p[3]); + + v[0] = _mm_unpacklo_epi16(u[0], u[1]); + v[1] = _mm_unpackhi_epi16(u[0], u[1]); + v[2] = _mm_unpacklo_epi16(u[2], u[3]); + v[3] = _mm_unpackhi_epi16(u[2], u[3]); + + u[0] = _mm_madd_epi16(v[0], k__cospi_p16_p16); + u[1] = _mm_madd_epi16(v[1], k__cospi_p16_p16); + u[2] = _mm_madd_epi16(v[0], k__cospi_p16_m16); + u[3] = _mm_madd_epi16(v[1], k__cospi_p16_m16); + u[4] = _mm_madd_epi16(v[2], k__cospi_p24_p08); + u[5] = _mm_madd_epi16(v[3], k__cospi_p24_p08); + u[6] = _mm_madd_epi16(v[2], k__cospi_m08_p24); + u[7] = _mm_madd_epi16(v[3], k__cospi_m08_p24); + + v[0] = _mm_add_epi32(u[0], k__DCT_CONST_ROUNDING); + v[1] = _mm_add_epi32(u[1], k__DCT_CONST_ROUNDING); + v[2] = _mm_add_epi32(u[2], k__DCT_CONST_ROUNDING); + v[3] = _mm_add_epi32(u[3], k__DCT_CONST_ROUNDING); + v[4] = _mm_add_epi32(u[4], k__DCT_CONST_ROUNDING); + v[5] = _mm_add_epi32(u[5], k__DCT_CONST_ROUNDING); + v[6] = _mm_add_epi32(u[6], k__DCT_CONST_ROUNDING); + v[7] = _mm_add_epi32(u[7], k__DCT_CONST_ROUNDING); + + u[0] = _mm_srai_epi32(v[0], DCT_CONST_BITS); + u[1] = _mm_srai_epi32(v[1], DCT_CONST_BITS); + u[2] = _mm_srai_epi32(v[2], DCT_CONST_BITS); + u[3] = _mm_srai_epi32(v[3], DCT_CONST_BITS); + u[4] = _mm_srai_epi32(v[4], DCT_CONST_BITS); + u[5] = _mm_srai_epi32(v[5], DCT_CONST_BITS); + u[6] = _mm_srai_epi32(v[6], DCT_CONST_BITS); + u[7] = _mm_srai_epi32(v[7], DCT_CONST_BITS); + + in[0] = _mm_packs_epi32(u[0], u[1]); + in[4] = _mm_packs_epi32(u[4], u[5]); + in[8] = _mm_packs_epi32(u[2], u[3]); + in[12] = _mm_packs_epi32(u[6], u[7]); + + u[0] = _mm_unpacklo_epi16(p[5], p[6]); + u[1] = _mm_unpackhi_epi16(p[5], p[6]); + v[0] = _mm_madd_epi16(u[0], k__cospi_m16_p16); + v[1] = _mm_madd_epi16(u[1], k__cospi_m16_p16); + v[2] = _mm_madd_epi16(u[0], k__cospi_p16_p16); + v[3] = _mm_madd_epi16(u[1], k__cospi_p16_p16); + + u[0] = _mm_add_epi32(v[0], k__DCT_CONST_ROUNDING); + u[1] = _mm_add_epi32(v[1], k__DCT_CONST_ROUNDING); + u[2] = _mm_add_epi32(v[2], k__DCT_CONST_ROUNDING); + u[3] = _mm_add_epi32(v[3], k__DCT_CONST_ROUNDING); + + v[0] = _mm_srai_epi32(u[0], DCT_CONST_BITS); + v[1] = _mm_srai_epi32(u[1], DCT_CONST_BITS); + v[2] = _mm_srai_epi32(u[2], DCT_CONST_BITS); + v[3] = _mm_srai_epi32(u[3], DCT_CONST_BITS); + + u[0] = _mm_packs_epi32(v[0], v[1]); + u[1] = _mm_packs_epi32(v[2], v[3]); + + t[0] = _mm_add_epi16(p[4], u[0]); + t[1] = _mm_sub_epi16(p[4], u[0]); + t[2] = _mm_sub_epi16(p[7], u[1]); + t[3] = _mm_add_epi16(p[7], u[1]); + + u[0] = _mm_unpacklo_epi16(t[0], t[3]); + u[1] = _mm_unpackhi_epi16(t[0], t[3]); + u[2] = _mm_unpacklo_epi16(t[1], t[2]); + u[3] = _mm_unpackhi_epi16(t[1], t[2]); + + v[0] = _mm_madd_epi16(u[0], k__cospi_p28_p04); + v[1] = _mm_madd_epi16(u[1], k__cospi_p28_p04); + v[2] = _mm_madd_epi16(u[2], k__cospi_p12_p20); + v[3] = _mm_madd_epi16(u[3], k__cospi_p12_p20); + v[4] = _mm_madd_epi16(u[2], k__cospi_m20_p12); + v[5] = _mm_madd_epi16(u[3], k__cospi_m20_p12); + v[6] = _mm_madd_epi16(u[0], k__cospi_m04_p28); + v[7] = _mm_madd_epi16(u[1], k__cospi_m04_p28); + + u[0] = _mm_add_epi32(v[0], k__DCT_CONST_ROUNDING); + u[1] = _mm_add_epi32(v[1], k__DCT_CONST_ROUNDING); + u[2] = _mm_add_epi32(v[2], k__DCT_CONST_ROUNDING); + u[3] = _mm_add_epi32(v[3], k__DCT_CONST_ROUNDING); + u[4] = _mm_add_epi32(v[4], k__DCT_CONST_ROUNDING); + u[5] = _mm_add_epi32(v[5], k__DCT_CONST_ROUNDING); + u[6] = _mm_add_epi32(v[6], k__DCT_CONST_ROUNDING); + u[7] = _mm_add_epi32(v[7], k__DCT_CONST_ROUNDING); + + v[0] = _mm_srai_epi32(u[0], DCT_CONST_BITS); + v[1] = _mm_srai_epi32(u[1], DCT_CONST_BITS); + v[2] = _mm_srai_epi32(u[2], DCT_CONST_BITS); + v[3] = _mm_srai_epi32(u[3], DCT_CONST_BITS); + v[4] = _mm_srai_epi32(u[4], DCT_CONST_BITS); + v[5] = _mm_srai_epi32(u[5], DCT_CONST_BITS); + v[6] = _mm_srai_epi32(u[6], DCT_CONST_BITS); + v[7] = _mm_srai_epi32(u[7], DCT_CONST_BITS); + + in[2] = _mm_packs_epi32(v[0], v[1]); + in[6] = _mm_packs_epi32(v[4], v[5]); + in[10] = _mm_packs_epi32(v[2], v[3]); + in[14] = _mm_packs_epi32(v[6], v[7]); + + // stage 2 + u[0] = _mm_unpacklo_epi16(s[2], s[5]); + u[1] = _mm_unpackhi_epi16(s[2], s[5]); + u[2] = _mm_unpacklo_epi16(s[3], s[4]); + u[3] = _mm_unpackhi_epi16(s[3], s[4]); + + v[0] = _mm_madd_epi16(u[0], k__cospi_m16_p16); + v[1] = _mm_madd_epi16(u[1], k__cospi_m16_p16); + v[2] = _mm_madd_epi16(u[2], k__cospi_m16_p16); + v[3] = _mm_madd_epi16(u[3], k__cospi_m16_p16); + v[4] = _mm_madd_epi16(u[2], k__cospi_p16_p16); + v[5] = _mm_madd_epi16(u[3], k__cospi_p16_p16); + v[6] = _mm_madd_epi16(u[0], k__cospi_p16_p16); + v[7] = _mm_madd_epi16(u[1], k__cospi_p16_p16); + + u[0] = _mm_add_epi32(v[0], k__DCT_CONST_ROUNDING); + u[1] = _mm_add_epi32(v[1], k__DCT_CONST_ROUNDING); + u[2] = _mm_add_epi32(v[2], k__DCT_CONST_ROUNDING); + u[3] = _mm_add_epi32(v[3], k__DCT_CONST_ROUNDING); + u[4] = _mm_add_epi32(v[4], k__DCT_CONST_ROUNDING); + u[5] = _mm_add_epi32(v[5], k__DCT_CONST_ROUNDING); + u[6] = _mm_add_epi32(v[6], k__DCT_CONST_ROUNDING); + u[7] = _mm_add_epi32(v[7], k__DCT_CONST_ROUNDING); + + v[0] = _mm_srai_epi32(u[0], DCT_CONST_BITS); + v[1] = _mm_srai_epi32(u[1], DCT_CONST_BITS); + v[2] = _mm_srai_epi32(u[2], DCT_CONST_BITS); + v[3] = _mm_srai_epi32(u[3], DCT_CONST_BITS); + v[4] = _mm_srai_epi32(u[4], DCT_CONST_BITS); + v[5] = _mm_srai_epi32(u[5], DCT_CONST_BITS); + v[6] = _mm_srai_epi32(u[6], DCT_CONST_BITS); + v[7] = _mm_srai_epi32(u[7], DCT_CONST_BITS); + + t[2] = _mm_packs_epi32(v[0], v[1]); + t[3] = _mm_packs_epi32(v[2], v[3]); + t[4] = _mm_packs_epi32(v[4], v[5]); + t[5] = _mm_packs_epi32(v[6], v[7]); + + // stage 3 + p[0] = _mm_add_epi16(s[0], t[3]); + p[1] = _mm_add_epi16(s[1], t[2]); + p[2] = _mm_sub_epi16(s[1], t[2]); + p[3] = _mm_sub_epi16(s[0], t[3]); + p[4] = _mm_sub_epi16(s[7], t[4]); + p[5] = _mm_sub_epi16(s[6], t[5]); + p[6] = _mm_add_epi16(s[6], t[5]); + p[7] = _mm_add_epi16(s[7], t[4]); + + // stage 4 + u[0] = _mm_unpacklo_epi16(p[1], p[6]); + u[1] = _mm_unpackhi_epi16(p[1], p[6]); + u[2] = _mm_unpacklo_epi16(p[2], p[5]); + u[3] = _mm_unpackhi_epi16(p[2], p[5]); + + v[0] = _mm_madd_epi16(u[0], k__cospi_m08_p24); + v[1] = _mm_madd_epi16(u[1], k__cospi_m08_p24); + v[2] = _mm_madd_epi16(u[2], k__cospi_p24_p08); + v[3] = _mm_madd_epi16(u[3], k__cospi_p24_p08); + v[4] = _mm_madd_epi16(u[2], k__cospi_p08_m24); + v[5] = _mm_madd_epi16(u[3], k__cospi_p08_m24); + v[6] = _mm_madd_epi16(u[0], k__cospi_p24_p08); + v[7] = _mm_madd_epi16(u[1], k__cospi_p24_p08); + + u[0] = _mm_add_epi32(v[0], k__DCT_CONST_ROUNDING); + u[1] = _mm_add_epi32(v[1], k__DCT_CONST_ROUNDING); + u[2] = _mm_add_epi32(v[2], k__DCT_CONST_ROUNDING); + u[3] = _mm_add_epi32(v[3], k__DCT_CONST_ROUNDING); + u[4] = _mm_add_epi32(v[4], k__DCT_CONST_ROUNDING); + u[5] = _mm_add_epi32(v[5], k__DCT_CONST_ROUNDING); + u[6] = _mm_add_epi32(v[6], k__DCT_CONST_ROUNDING); + u[7] = _mm_add_epi32(v[7], k__DCT_CONST_ROUNDING); + + v[0] = _mm_srai_epi32(u[0], DCT_CONST_BITS); + v[1] = _mm_srai_epi32(u[1], DCT_CONST_BITS); + v[2] = _mm_srai_epi32(u[2], DCT_CONST_BITS); + v[3] = _mm_srai_epi32(u[3], DCT_CONST_BITS); + v[4] = _mm_srai_epi32(u[4], DCT_CONST_BITS); + v[5] = _mm_srai_epi32(u[5], DCT_CONST_BITS); + v[6] = _mm_srai_epi32(u[6], DCT_CONST_BITS); + v[7] = _mm_srai_epi32(u[7], DCT_CONST_BITS); + + t[1] = _mm_packs_epi32(v[0], v[1]); + t[2] = _mm_packs_epi32(v[2], v[3]); + t[5] = _mm_packs_epi32(v[4], v[5]); + t[6] = _mm_packs_epi32(v[6], v[7]); + + // stage 5 + s[0] = _mm_add_epi16(p[0], t[1]); + s[1] = _mm_sub_epi16(p[0], t[1]); + s[2] = _mm_add_epi16(p[3], t[2]); + s[3] = _mm_sub_epi16(p[3], t[2]); + s[4] = _mm_sub_epi16(p[4], t[5]); + s[5] = _mm_add_epi16(p[4], t[5]); + s[6] = _mm_sub_epi16(p[7], t[6]); + s[7] = _mm_add_epi16(p[7], t[6]); + + // stage 6 + u[0] = _mm_unpacklo_epi16(s[0], s[7]); + u[1] = _mm_unpackhi_epi16(s[0], s[7]); + u[2] = _mm_unpacklo_epi16(s[1], s[6]); + u[3] = _mm_unpackhi_epi16(s[1], s[6]); + u[4] = _mm_unpacklo_epi16(s[2], s[5]); + u[5] = _mm_unpackhi_epi16(s[2], s[5]); + u[6] = _mm_unpacklo_epi16(s[3], s[4]); + u[7] = _mm_unpackhi_epi16(s[3], s[4]); + + v[0] = _mm_madd_epi16(u[0], k__cospi_p30_p02); + v[1] = _mm_madd_epi16(u[1], k__cospi_p30_p02); + v[2] = _mm_madd_epi16(u[2], k__cospi_p14_p18); + v[3] = _mm_madd_epi16(u[3], k__cospi_p14_p18); + v[4] = _mm_madd_epi16(u[4], k__cospi_p22_p10); + v[5] = _mm_madd_epi16(u[5], k__cospi_p22_p10); + v[6] = _mm_madd_epi16(u[6], k__cospi_p06_p26); + v[7] = _mm_madd_epi16(u[7], k__cospi_p06_p26); + v[8] = _mm_madd_epi16(u[6], k__cospi_m26_p06); + v[9] = _mm_madd_epi16(u[7], k__cospi_m26_p06); + v[10] = _mm_madd_epi16(u[4], k__cospi_m10_p22); + v[11] = _mm_madd_epi16(u[5], k__cospi_m10_p22); + v[12] = _mm_madd_epi16(u[2], k__cospi_m18_p14); + v[13] = _mm_madd_epi16(u[3], k__cospi_m18_p14); + v[14] = _mm_madd_epi16(u[0], k__cospi_m02_p30); + v[15] = _mm_madd_epi16(u[1], k__cospi_m02_p30); + + u[0] = _mm_add_epi32(v[0], k__DCT_CONST_ROUNDING); + u[1] = _mm_add_epi32(v[1], k__DCT_CONST_ROUNDING); + u[2] = _mm_add_epi32(v[2], k__DCT_CONST_ROUNDING); + u[3] = _mm_add_epi32(v[3], k__DCT_CONST_ROUNDING); + u[4] = _mm_add_epi32(v[4], k__DCT_CONST_ROUNDING); + u[5] = _mm_add_epi32(v[5], k__DCT_CONST_ROUNDING); + u[6] = _mm_add_epi32(v[6], k__DCT_CONST_ROUNDING); + u[7] = _mm_add_epi32(v[7], k__DCT_CONST_ROUNDING); + u[8] = _mm_add_epi32(v[8], k__DCT_CONST_ROUNDING); + u[9] = _mm_add_epi32(v[9], k__DCT_CONST_ROUNDING); + u[10] = _mm_add_epi32(v[10], k__DCT_CONST_ROUNDING); + u[11] = _mm_add_epi32(v[11], k__DCT_CONST_ROUNDING); + u[12] = _mm_add_epi32(v[12], k__DCT_CONST_ROUNDING); + u[13] = _mm_add_epi32(v[13], k__DCT_CONST_ROUNDING); + u[14] = _mm_add_epi32(v[14], k__DCT_CONST_ROUNDING); + u[15] = _mm_add_epi32(v[15], k__DCT_CONST_ROUNDING); + + v[0] = _mm_srai_epi32(u[0], DCT_CONST_BITS); + v[1] = _mm_srai_epi32(u[1], DCT_CONST_BITS); + v[2] = _mm_srai_epi32(u[2], DCT_CONST_BITS); + v[3] = _mm_srai_epi32(u[3], DCT_CONST_BITS); + v[4] = _mm_srai_epi32(u[4], DCT_CONST_BITS); + v[5] = _mm_srai_epi32(u[5], DCT_CONST_BITS); + v[6] = _mm_srai_epi32(u[6], DCT_CONST_BITS); + v[7] = _mm_srai_epi32(u[7], DCT_CONST_BITS); + v[8] = _mm_srai_epi32(u[8], DCT_CONST_BITS); + v[9] = _mm_srai_epi32(u[9], DCT_CONST_BITS); + v[10] = _mm_srai_epi32(u[10], DCT_CONST_BITS); + v[11] = _mm_srai_epi32(u[11], DCT_CONST_BITS); + v[12] = _mm_srai_epi32(u[12], DCT_CONST_BITS); + v[13] = _mm_srai_epi32(u[13], DCT_CONST_BITS); + v[14] = _mm_srai_epi32(u[14], DCT_CONST_BITS); + v[15] = _mm_srai_epi32(u[15], DCT_CONST_BITS); + + in[1] = _mm_packs_epi32(v[0], v[1]); + in[9] = _mm_packs_epi32(v[2], v[3]); + in[5] = _mm_packs_epi32(v[4], v[5]); + in[13] = _mm_packs_epi32(v[6], v[7]); + in[3] = _mm_packs_epi32(v[8], v[9]); + in[11] = _mm_packs_epi32(v[10], v[11]); + in[7] = _mm_packs_epi32(v[12], v[13]); + in[15] = _mm_packs_epi32(v[14], v[15]); +} + +static void fadst16_8col(__m128i *in) { + // perform 16x16 1-D ADST for 8 columns + __m128i s[16], x[16], u[32], v[32]; + const __m128i k__cospi_p01_p31 = pair_set_epi16(cospi_1_64, cospi_31_64); + const __m128i k__cospi_p31_m01 = pair_set_epi16(cospi_31_64, -cospi_1_64); + const __m128i k__cospi_p05_p27 = pair_set_epi16(cospi_5_64, cospi_27_64); + const __m128i k__cospi_p27_m05 = pair_set_epi16(cospi_27_64, -cospi_5_64); + const __m128i k__cospi_p09_p23 = pair_set_epi16(cospi_9_64, cospi_23_64); + const __m128i k__cospi_p23_m09 = pair_set_epi16(cospi_23_64, -cospi_9_64); + const __m128i k__cospi_p13_p19 = pair_set_epi16(cospi_13_64, cospi_19_64); + const __m128i k__cospi_p19_m13 = pair_set_epi16(cospi_19_64, -cospi_13_64); + const __m128i k__cospi_p17_p15 = pair_set_epi16(cospi_17_64, cospi_15_64); + const __m128i k__cospi_p15_m17 = pair_set_epi16(cospi_15_64, -cospi_17_64); + const __m128i k__cospi_p21_p11 = pair_set_epi16(cospi_21_64, cospi_11_64); + const __m128i k__cospi_p11_m21 = pair_set_epi16(cospi_11_64, -cospi_21_64); + const __m128i k__cospi_p25_p07 = pair_set_epi16(cospi_25_64, cospi_7_64); + const __m128i k__cospi_p07_m25 = pair_set_epi16(cospi_7_64, -cospi_25_64); + const __m128i k__cospi_p29_p03 = pair_set_epi16(cospi_29_64, cospi_3_64); + const __m128i k__cospi_p03_m29 = pair_set_epi16(cospi_3_64, -cospi_29_64); + const __m128i k__cospi_p04_p28 = pair_set_epi16(cospi_4_64, cospi_28_64); + const __m128i k__cospi_p28_m04 = pair_set_epi16(cospi_28_64, -cospi_4_64); + const __m128i k__cospi_p20_p12 = pair_set_epi16(cospi_20_64, cospi_12_64); + const __m128i k__cospi_p12_m20 = pair_set_epi16(cospi_12_64, -cospi_20_64); + const __m128i k__cospi_m28_p04 = pair_set_epi16(-cospi_28_64, cospi_4_64); + const __m128i k__cospi_m12_p20 = pair_set_epi16(-cospi_12_64, cospi_20_64); + const __m128i k__cospi_p08_p24 = pair_set_epi16(cospi_8_64, cospi_24_64); + const __m128i k__cospi_p24_m08 = pair_set_epi16(cospi_24_64, -cospi_8_64); + const __m128i k__cospi_m24_p08 = pair_set_epi16(-cospi_24_64, cospi_8_64); + const __m128i k__cospi_m16_m16 = _mm_set1_epi16(-cospi_16_64); + const __m128i k__cospi_p16_p16 = _mm_set1_epi16(cospi_16_64); + const __m128i k__cospi_p16_m16 = pair_set_epi16(cospi_16_64, -cospi_16_64); + const __m128i k__cospi_m16_p16 = pair_set_epi16(-cospi_16_64, cospi_16_64); + const __m128i k__DCT_CONST_ROUNDING = _mm_set1_epi32(DCT_CONST_ROUNDING); + const __m128i kZero = _mm_setzero_si128(); + + u[0] = _mm_unpacklo_epi16(in[15], in[0]); + u[1] = _mm_unpackhi_epi16(in[15], in[0]); + u[2] = _mm_unpacklo_epi16(in[13], in[2]); + u[3] = _mm_unpackhi_epi16(in[13], in[2]); + u[4] = _mm_unpacklo_epi16(in[11], in[4]); + u[5] = _mm_unpackhi_epi16(in[11], in[4]); + u[6] = _mm_unpacklo_epi16(in[9], in[6]); + u[7] = _mm_unpackhi_epi16(in[9], in[6]); + u[8] = _mm_unpacklo_epi16(in[7], in[8]); + u[9] = _mm_unpackhi_epi16(in[7], in[8]); + u[10] = _mm_unpacklo_epi16(in[5], in[10]); + u[11] = _mm_unpackhi_epi16(in[5], in[10]); + u[12] = _mm_unpacklo_epi16(in[3], in[12]); + u[13] = _mm_unpackhi_epi16(in[3], in[12]); + u[14] = _mm_unpacklo_epi16(in[1], in[14]); + u[15] = _mm_unpackhi_epi16(in[1], in[14]); + + v[0] = _mm_madd_epi16(u[0], k__cospi_p01_p31); + v[1] = _mm_madd_epi16(u[1], k__cospi_p01_p31); + v[2] = _mm_madd_epi16(u[0], k__cospi_p31_m01); + v[3] = _mm_madd_epi16(u[1], k__cospi_p31_m01); + v[4] = _mm_madd_epi16(u[2], k__cospi_p05_p27); + v[5] = _mm_madd_epi16(u[3], k__cospi_p05_p27); + v[6] = _mm_madd_epi16(u[2], k__cospi_p27_m05); + v[7] = _mm_madd_epi16(u[3], k__cospi_p27_m05); + v[8] = _mm_madd_epi16(u[4], k__cospi_p09_p23); + v[9] = _mm_madd_epi16(u[5], k__cospi_p09_p23); + v[10] = _mm_madd_epi16(u[4], k__cospi_p23_m09); + v[11] = _mm_madd_epi16(u[5], k__cospi_p23_m09); + v[12] = _mm_madd_epi16(u[6], k__cospi_p13_p19); + v[13] = _mm_madd_epi16(u[7], k__cospi_p13_p19); + v[14] = _mm_madd_epi16(u[6], k__cospi_p19_m13); + v[15] = _mm_madd_epi16(u[7], k__cospi_p19_m13); + v[16] = _mm_madd_epi16(u[8], k__cospi_p17_p15); + v[17] = _mm_madd_epi16(u[9], k__cospi_p17_p15); + v[18] = _mm_madd_epi16(u[8], k__cospi_p15_m17); + v[19] = _mm_madd_epi16(u[9], k__cospi_p15_m17); + v[20] = _mm_madd_epi16(u[10], k__cospi_p21_p11); + v[21] = _mm_madd_epi16(u[11], k__cospi_p21_p11); + v[22] = _mm_madd_epi16(u[10], k__cospi_p11_m21); + v[23] = _mm_madd_epi16(u[11], k__cospi_p11_m21); + v[24] = _mm_madd_epi16(u[12], k__cospi_p25_p07); + v[25] = _mm_madd_epi16(u[13], k__cospi_p25_p07); + v[26] = _mm_madd_epi16(u[12], k__cospi_p07_m25); + v[27] = _mm_madd_epi16(u[13], k__cospi_p07_m25); + v[28] = _mm_madd_epi16(u[14], k__cospi_p29_p03); + v[29] = _mm_madd_epi16(u[15], k__cospi_p29_p03); + v[30] = _mm_madd_epi16(u[14], k__cospi_p03_m29); + v[31] = _mm_madd_epi16(u[15], k__cospi_p03_m29); + + u[0] = _mm_add_epi32(v[0], v[16]); + u[1] = _mm_add_epi32(v[1], v[17]); + u[2] = _mm_add_epi32(v[2], v[18]); + u[3] = _mm_add_epi32(v[3], v[19]); + u[4] = _mm_add_epi32(v[4], v[20]); + u[5] = _mm_add_epi32(v[5], v[21]); + u[6] = _mm_add_epi32(v[6], v[22]); + u[7] = _mm_add_epi32(v[7], v[23]); + u[8] = _mm_add_epi32(v[8], v[24]); + u[9] = _mm_add_epi32(v[9], v[25]); + u[10] = _mm_add_epi32(v[10], v[26]); + u[11] = _mm_add_epi32(v[11], v[27]); + u[12] = _mm_add_epi32(v[12], v[28]); + u[13] = _mm_add_epi32(v[13], v[29]); + u[14] = _mm_add_epi32(v[14], v[30]); + u[15] = _mm_add_epi32(v[15], v[31]); + u[16] = _mm_sub_epi32(v[0], v[16]); + u[17] = _mm_sub_epi32(v[1], v[17]); + u[18] = _mm_sub_epi32(v[2], v[18]); + u[19] = _mm_sub_epi32(v[3], v[19]); + u[20] = _mm_sub_epi32(v[4], v[20]); + u[21] = _mm_sub_epi32(v[5], v[21]); + u[22] = _mm_sub_epi32(v[6], v[22]); + u[23] = _mm_sub_epi32(v[7], v[23]); + u[24] = _mm_sub_epi32(v[8], v[24]); + u[25] = _mm_sub_epi32(v[9], v[25]); + u[26] = _mm_sub_epi32(v[10], v[26]); + u[27] = _mm_sub_epi32(v[11], v[27]); + u[28] = _mm_sub_epi32(v[12], v[28]); + u[29] = _mm_sub_epi32(v[13], v[29]); + u[30] = _mm_sub_epi32(v[14], v[30]); + u[31] = _mm_sub_epi32(v[15], v[31]); + + v[0] = _mm_add_epi32(u[0], k__DCT_CONST_ROUNDING); + v[1] = _mm_add_epi32(u[1], k__DCT_CONST_ROUNDING); + v[2] = _mm_add_epi32(u[2], k__DCT_CONST_ROUNDING); + v[3] = _mm_add_epi32(u[3], k__DCT_CONST_ROUNDING); + v[4] = _mm_add_epi32(u[4], k__DCT_CONST_ROUNDING); + v[5] = _mm_add_epi32(u[5], k__DCT_CONST_ROUNDING); + v[6] = _mm_add_epi32(u[6], k__DCT_CONST_ROUNDING); + v[7] = _mm_add_epi32(u[7], k__DCT_CONST_ROUNDING); + v[8] = _mm_add_epi32(u[8], k__DCT_CONST_ROUNDING); + v[9] = _mm_add_epi32(u[9], k__DCT_CONST_ROUNDING); + v[10] = _mm_add_epi32(u[10], k__DCT_CONST_ROUNDING); + v[11] = _mm_add_epi32(u[11], k__DCT_CONST_ROUNDING); + v[12] = _mm_add_epi32(u[12], k__DCT_CONST_ROUNDING); + v[13] = _mm_add_epi32(u[13], k__DCT_CONST_ROUNDING); + v[14] = _mm_add_epi32(u[14], k__DCT_CONST_ROUNDING); + v[15] = _mm_add_epi32(u[15], k__DCT_CONST_ROUNDING); + v[16] = _mm_add_epi32(u[16], k__DCT_CONST_ROUNDING); + v[17] = _mm_add_epi32(u[17], k__DCT_CONST_ROUNDING); + v[18] = _mm_add_epi32(u[18], k__DCT_CONST_ROUNDING); + v[19] = _mm_add_epi32(u[19], k__DCT_CONST_ROUNDING); + v[20] = _mm_add_epi32(u[20], k__DCT_CONST_ROUNDING); + v[21] = _mm_add_epi32(u[21], k__DCT_CONST_ROUNDING); + v[22] = _mm_add_epi32(u[22], k__DCT_CONST_ROUNDING); + v[23] = _mm_add_epi32(u[23], k__DCT_CONST_ROUNDING); + v[24] = _mm_add_epi32(u[24], k__DCT_CONST_ROUNDING); + v[25] = _mm_add_epi32(u[25], k__DCT_CONST_ROUNDING); + v[26] = _mm_add_epi32(u[26], k__DCT_CONST_ROUNDING); + v[27] = _mm_add_epi32(u[27], k__DCT_CONST_ROUNDING); + v[28] = _mm_add_epi32(u[28], k__DCT_CONST_ROUNDING); + v[29] = _mm_add_epi32(u[29], k__DCT_CONST_ROUNDING); + v[30] = _mm_add_epi32(u[30], k__DCT_CONST_ROUNDING); + v[31] = _mm_add_epi32(u[31], k__DCT_CONST_ROUNDING); + + u[0] = _mm_srai_epi32(v[0], DCT_CONST_BITS); + u[1] = _mm_srai_epi32(v[1], DCT_CONST_BITS); + u[2] = _mm_srai_epi32(v[2], DCT_CONST_BITS); + u[3] = _mm_srai_epi32(v[3], DCT_CONST_BITS); + u[4] = _mm_srai_epi32(v[4], DCT_CONST_BITS); + u[5] = _mm_srai_epi32(v[5], DCT_CONST_BITS); + u[6] = _mm_srai_epi32(v[6], DCT_CONST_BITS); + u[7] = _mm_srai_epi32(v[7], DCT_CONST_BITS); + u[8] = _mm_srai_epi32(v[8], DCT_CONST_BITS); + u[9] = _mm_srai_epi32(v[9], DCT_CONST_BITS); + u[10] = _mm_srai_epi32(v[10], DCT_CONST_BITS); + u[11] = _mm_srai_epi32(v[11], DCT_CONST_BITS); + u[12] = _mm_srai_epi32(v[12], DCT_CONST_BITS); + u[13] = _mm_srai_epi32(v[13], DCT_CONST_BITS); + u[14] = _mm_srai_epi32(v[14], DCT_CONST_BITS); + u[15] = _mm_srai_epi32(v[15], DCT_CONST_BITS); + u[16] = _mm_srai_epi32(v[16], DCT_CONST_BITS); + u[17] = _mm_srai_epi32(v[17], DCT_CONST_BITS); + u[18] = _mm_srai_epi32(v[18], DCT_CONST_BITS); + u[19] = _mm_srai_epi32(v[19], DCT_CONST_BITS); + u[20] = _mm_srai_epi32(v[20], DCT_CONST_BITS); + u[21] = _mm_srai_epi32(v[21], DCT_CONST_BITS); + u[22] = _mm_srai_epi32(v[22], DCT_CONST_BITS); + u[23] = _mm_srai_epi32(v[23], DCT_CONST_BITS); + u[24] = _mm_srai_epi32(v[24], DCT_CONST_BITS); + u[25] = _mm_srai_epi32(v[25], DCT_CONST_BITS); + u[26] = _mm_srai_epi32(v[26], DCT_CONST_BITS); + u[27] = _mm_srai_epi32(v[27], DCT_CONST_BITS); + u[28] = _mm_srai_epi32(v[28], DCT_CONST_BITS); + u[29] = _mm_srai_epi32(v[29], DCT_CONST_BITS); + u[30] = _mm_srai_epi32(v[30], DCT_CONST_BITS); + u[31] = _mm_srai_epi32(v[31], DCT_CONST_BITS); + + s[0] = _mm_packs_epi32(u[0], u[1]); + s[1] = _mm_packs_epi32(u[2], u[3]); + s[2] = _mm_packs_epi32(u[4], u[5]); + s[3] = _mm_packs_epi32(u[6], u[7]); + s[4] = _mm_packs_epi32(u[8], u[9]); + s[5] = _mm_packs_epi32(u[10], u[11]); + s[6] = _mm_packs_epi32(u[12], u[13]); + s[7] = _mm_packs_epi32(u[14], u[15]); + s[8] = _mm_packs_epi32(u[16], u[17]); + s[9] = _mm_packs_epi32(u[18], u[19]); + s[10] = _mm_packs_epi32(u[20], u[21]); + s[11] = _mm_packs_epi32(u[22], u[23]); + s[12] = _mm_packs_epi32(u[24], u[25]); + s[13] = _mm_packs_epi32(u[26], u[27]); + s[14] = _mm_packs_epi32(u[28], u[29]); + s[15] = _mm_packs_epi32(u[30], u[31]); + + // stage 2 + u[0] = _mm_unpacklo_epi16(s[8], s[9]); + u[1] = _mm_unpackhi_epi16(s[8], s[9]); + u[2] = _mm_unpacklo_epi16(s[10], s[11]); + u[3] = _mm_unpackhi_epi16(s[10], s[11]); + u[4] = _mm_unpacklo_epi16(s[12], s[13]); + u[5] = _mm_unpackhi_epi16(s[12], s[13]); + u[6] = _mm_unpacklo_epi16(s[14], s[15]); + u[7] = _mm_unpackhi_epi16(s[14], s[15]); + + v[0] = _mm_madd_epi16(u[0], k__cospi_p04_p28); + v[1] = _mm_madd_epi16(u[1], k__cospi_p04_p28); + v[2] = _mm_madd_epi16(u[0], k__cospi_p28_m04); + v[3] = _mm_madd_epi16(u[1], k__cospi_p28_m04); + v[4] = _mm_madd_epi16(u[2], k__cospi_p20_p12); + v[5] = _mm_madd_epi16(u[3], k__cospi_p20_p12); + v[6] = _mm_madd_epi16(u[2], k__cospi_p12_m20); + v[7] = _mm_madd_epi16(u[3], k__cospi_p12_m20); + v[8] = _mm_madd_epi16(u[4], k__cospi_m28_p04); + v[9] = _mm_madd_epi16(u[5], k__cospi_m28_p04); + v[10] = _mm_madd_epi16(u[4], k__cospi_p04_p28); + v[11] = _mm_madd_epi16(u[5], k__cospi_p04_p28); + v[12] = _mm_madd_epi16(u[6], k__cospi_m12_p20); + v[13] = _mm_madd_epi16(u[7], k__cospi_m12_p20); + v[14] = _mm_madd_epi16(u[6], k__cospi_p20_p12); + v[15] = _mm_madd_epi16(u[7], k__cospi_p20_p12); + + u[0] = _mm_add_epi32(v[0], v[8]); + u[1] = _mm_add_epi32(v[1], v[9]); + u[2] = _mm_add_epi32(v[2], v[10]); + u[3] = _mm_add_epi32(v[3], v[11]); + u[4] = _mm_add_epi32(v[4], v[12]); + u[5] = _mm_add_epi32(v[5], v[13]); + u[6] = _mm_add_epi32(v[6], v[14]); + u[7] = _mm_add_epi32(v[7], v[15]); + u[8] = _mm_sub_epi32(v[0], v[8]); + u[9] = _mm_sub_epi32(v[1], v[9]); + u[10] = _mm_sub_epi32(v[2], v[10]); + u[11] = _mm_sub_epi32(v[3], v[11]); + u[12] = _mm_sub_epi32(v[4], v[12]); + u[13] = _mm_sub_epi32(v[5], v[13]); + u[14] = _mm_sub_epi32(v[6], v[14]); + u[15] = _mm_sub_epi32(v[7], v[15]); + + v[0] = _mm_add_epi32(u[0], k__DCT_CONST_ROUNDING); + v[1] = _mm_add_epi32(u[1], k__DCT_CONST_ROUNDING); + v[2] = _mm_add_epi32(u[2], k__DCT_CONST_ROUNDING); + v[3] = _mm_add_epi32(u[3], k__DCT_CONST_ROUNDING); + v[4] = _mm_add_epi32(u[4], k__DCT_CONST_ROUNDING); + v[5] = _mm_add_epi32(u[5], k__DCT_CONST_ROUNDING); + v[6] = _mm_add_epi32(u[6], k__DCT_CONST_ROUNDING); + v[7] = _mm_add_epi32(u[7], k__DCT_CONST_ROUNDING); + v[8] = _mm_add_epi32(u[8], k__DCT_CONST_ROUNDING); + v[9] = _mm_add_epi32(u[9], k__DCT_CONST_ROUNDING); + v[10] = _mm_add_epi32(u[10], k__DCT_CONST_ROUNDING); + v[11] = _mm_add_epi32(u[11], k__DCT_CONST_ROUNDING); + v[12] = _mm_add_epi32(u[12], k__DCT_CONST_ROUNDING); + v[13] = _mm_add_epi32(u[13], k__DCT_CONST_ROUNDING); + v[14] = _mm_add_epi32(u[14], k__DCT_CONST_ROUNDING); + v[15] = _mm_add_epi32(u[15], k__DCT_CONST_ROUNDING); + + u[0] = _mm_srai_epi32(v[0], DCT_CONST_BITS); + u[1] = _mm_srai_epi32(v[1], DCT_CONST_BITS); + u[2] = _mm_srai_epi32(v[2], DCT_CONST_BITS); + u[3] = _mm_srai_epi32(v[3], DCT_CONST_BITS); + u[4] = _mm_srai_epi32(v[4], DCT_CONST_BITS); + u[5] = _mm_srai_epi32(v[5], DCT_CONST_BITS); + u[6] = _mm_srai_epi32(v[6], DCT_CONST_BITS); + u[7] = _mm_srai_epi32(v[7], DCT_CONST_BITS); + u[8] = _mm_srai_epi32(v[8], DCT_CONST_BITS); + u[9] = _mm_srai_epi32(v[9], DCT_CONST_BITS); + u[10] = _mm_srai_epi32(v[10], DCT_CONST_BITS); + u[11] = _mm_srai_epi32(v[11], DCT_CONST_BITS); + u[12] = _mm_srai_epi32(v[12], DCT_CONST_BITS); + u[13] = _mm_srai_epi32(v[13], DCT_CONST_BITS); + u[14] = _mm_srai_epi32(v[14], DCT_CONST_BITS); + u[15] = _mm_srai_epi32(v[15], DCT_CONST_BITS); + + x[0] = _mm_add_epi16(s[0], s[4]); + x[1] = _mm_add_epi16(s[1], s[5]); + x[2] = _mm_add_epi16(s[2], s[6]); + x[3] = _mm_add_epi16(s[3], s[7]); + x[4] = _mm_sub_epi16(s[0], s[4]); + x[5] = _mm_sub_epi16(s[1], s[5]); + x[6] = _mm_sub_epi16(s[2], s[6]); + x[7] = _mm_sub_epi16(s[3], s[7]); + x[8] = _mm_packs_epi32(u[0], u[1]); + x[9] = _mm_packs_epi32(u[2], u[3]); + x[10] = _mm_packs_epi32(u[4], u[5]); + x[11] = _mm_packs_epi32(u[6], u[7]); + x[12] = _mm_packs_epi32(u[8], u[9]); + x[13] = _mm_packs_epi32(u[10], u[11]); + x[14] = _mm_packs_epi32(u[12], u[13]); + x[15] = _mm_packs_epi32(u[14], u[15]); + + // stage 3 + u[0] = _mm_unpacklo_epi16(x[4], x[5]); + u[1] = _mm_unpackhi_epi16(x[4], x[5]); + u[2] = _mm_unpacklo_epi16(x[6], x[7]); + u[3] = _mm_unpackhi_epi16(x[6], x[7]); + u[4] = _mm_unpacklo_epi16(x[12], x[13]); + u[5] = _mm_unpackhi_epi16(x[12], x[13]); + u[6] = _mm_unpacklo_epi16(x[14], x[15]); + u[7] = _mm_unpackhi_epi16(x[14], x[15]); + + v[0] = _mm_madd_epi16(u[0], k__cospi_p08_p24); + v[1] = _mm_madd_epi16(u[1], k__cospi_p08_p24); + v[2] = _mm_madd_epi16(u[0], k__cospi_p24_m08); + v[3] = _mm_madd_epi16(u[1], k__cospi_p24_m08); + v[4] = _mm_madd_epi16(u[2], k__cospi_m24_p08); + v[5] = _mm_madd_epi16(u[3], k__cospi_m24_p08); + v[6] = _mm_madd_epi16(u[2], k__cospi_p08_p24); + v[7] = _mm_madd_epi16(u[3], k__cospi_p08_p24); + v[8] = _mm_madd_epi16(u[4], k__cospi_p08_p24); + v[9] = _mm_madd_epi16(u[5], k__cospi_p08_p24); + v[10] = _mm_madd_epi16(u[4], k__cospi_p24_m08); + v[11] = _mm_madd_epi16(u[5], k__cospi_p24_m08); + v[12] = _mm_madd_epi16(u[6], k__cospi_m24_p08); + v[13] = _mm_madd_epi16(u[7], k__cospi_m24_p08); + v[14] = _mm_madd_epi16(u[6], k__cospi_p08_p24); + v[15] = _mm_madd_epi16(u[7], k__cospi_p08_p24); + + u[0] = _mm_add_epi32(v[0], v[4]); + u[1] = _mm_add_epi32(v[1], v[5]); + u[2] = _mm_add_epi32(v[2], v[6]); + u[3] = _mm_add_epi32(v[3], v[7]); + u[4] = _mm_sub_epi32(v[0], v[4]); + u[5] = _mm_sub_epi32(v[1], v[5]); + u[6] = _mm_sub_epi32(v[2], v[6]); + u[7] = _mm_sub_epi32(v[3], v[7]); + u[8] = _mm_add_epi32(v[8], v[12]); + u[9] = _mm_add_epi32(v[9], v[13]); + u[10] = _mm_add_epi32(v[10], v[14]); + u[11] = _mm_add_epi32(v[11], v[15]); + u[12] = _mm_sub_epi32(v[8], v[12]); + u[13] = _mm_sub_epi32(v[9], v[13]); + u[14] = _mm_sub_epi32(v[10], v[14]); + u[15] = _mm_sub_epi32(v[11], v[15]); + + u[0] = _mm_add_epi32(u[0], k__DCT_CONST_ROUNDING); + u[1] = _mm_add_epi32(u[1], k__DCT_CONST_ROUNDING); + u[2] = _mm_add_epi32(u[2], k__DCT_CONST_ROUNDING); + u[3] = _mm_add_epi32(u[3], k__DCT_CONST_ROUNDING); + u[4] = _mm_add_epi32(u[4], k__DCT_CONST_ROUNDING); + u[5] = _mm_add_epi32(u[5], k__DCT_CONST_ROUNDING); + u[6] = _mm_add_epi32(u[6], k__DCT_CONST_ROUNDING); + u[7] = _mm_add_epi32(u[7], k__DCT_CONST_ROUNDING); + u[8] = _mm_add_epi32(u[8], k__DCT_CONST_ROUNDING); + u[9] = _mm_add_epi32(u[9], k__DCT_CONST_ROUNDING); + u[10] = _mm_add_epi32(u[10], k__DCT_CONST_ROUNDING); + u[11] = _mm_add_epi32(u[11], k__DCT_CONST_ROUNDING); + u[12] = _mm_add_epi32(u[12], k__DCT_CONST_ROUNDING); + u[13] = _mm_add_epi32(u[13], k__DCT_CONST_ROUNDING); + u[14] = _mm_add_epi32(u[14], k__DCT_CONST_ROUNDING); + u[15] = _mm_add_epi32(u[15], k__DCT_CONST_ROUNDING); + + v[0] = _mm_srai_epi32(u[0], DCT_CONST_BITS); + v[1] = _mm_srai_epi32(u[1], DCT_CONST_BITS); + v[2] = _mm_srai_epi32(u[2], DCT_CONST_BITS); + v[3] = _mm_srai_epi32(u[3], DCT_CONST_BITS); + v[4] = _mm_srai_epi32(u[4], DCT_CONST_BITS); + v[5] = _mm_srai_epi32(u[5], DCT_CONST_BITS); + v[6] = _mm_srai_epi32(u[6], DCT_CONST_BITS); + v[7] = _mm_srai_epi32(u[7], DCT_CONST_BITS); + v[8] = _mm_srai_epi32(u[8], DCT_CONST_BITS); + v[9] = _mm_srai_epi32(u[9], DCT_CONST_BITS); + v[10] = _mm_srai_epi32(u[10], DCT_CONST_BITS); + v[11] = _mm_srai_epi32(u[11], DCT_CONST_BITS); + v[12] = _mm_srai_epi32(u[12], DCT_CONST_BITS); + v[13] = _mm_srai_epi32(u[13], DCT_CONST_BITS); + v[14] = _mm_srai_epi32(u[14], DCT_CONST_BITS); + v[15] = _mm_srai_epi32(u[15], DCT_CONST_BITS); + + s[0] = _mm_add_epi16(x[0], x[2]); + s[1] = _mm_add_epi16(x[1], x[3]); + s[2] = _mm_sub_epi16(x[0], x[2]); + s[3] = _mm_sub_epi16(x[1], x[3]); + s[4] = _mm_packs_epi32(v[0], v[1]); + s[5] = _mm_packs_epi32(v[2], v[3]); + s[6] = _mm_packs_epi32(v[4], v[5]); + s[7] = _mm_packs_epi32(v[6], v[7]); + s[8] = _mm_add_epi16(x[8], x[10]); + s[9] = _mm_add_epi16(x[9], x[11]); + s[10] = _mm_sub_epi16(x[8], x[10]); + s[11] = _mm_sub_epi16(x[9], x[11]); + s[12] = _mm_packs_epi32(v[8], v[9]); + s[13] = _mm_packs_epi32(v[10], v[11]); + s[14] = _mm_packs_epi32(v[12], v[13]); + s[15] = _mm_packs_epi32(v[14], v[15]); + + // stage 4 + u[0] = _mm_unpacklo_epi16(s[2], s[3]); + u[1] = _mm_unpackhi_epi16(s[2], s[3]); + u[2] = _mm_unpacklo_epi16(s[6], s[7]); + u[3] = _mm_unpackhi_epi16(s[6], s[7]); + u[4] = _mm_unpacklo_epi16(s[10], s[11]); + u[5] = _mm_unpackhi_epi16(s[10], s[11]); + u[6] = _mm_unpacklo_epi16(s[14], s[15]); + u[7] = _mm_unpackhi_epi16(s[14], s[15]); + + v[0] = _mm_madd_epi16(u[0], k__cospi_m16_m16); + v[1] = _mm_madd_epi16(u[1], k__cospi_m16_m16); + v[2] = _mm_madd_epi16(u[0], k__cospi_p16_m16); + v[3] = _mm_madd_epi16(u[1], k__cospi_p16_m16); + v[4] = _mm_madd_epi16(u[2], k__cospi_p16_p16); + v[5] = _mm_madd_epi16(u[3], k__cospi_p16_p16); + v[6] = _mm_madd_epi16(u[2], k__cospi_m16_p16); + v[7] = _mm_madd_epi16(u[3], k__cospi_m16_p16); + v[8] = _mm_madd_epi16(u[4], k__cospi_p16_p16); + v[9] = _mm_madd_epi16(u[5], k__cospi_p16_p16); + v[10] = _mm_madd_epi16(u[4], k__cospi_m16_p16); + v[11] = _mm_madd_epi16(u[5], k__cospi_m16_p16); + v[12] = _mm_madd_epi16(u[6], k__cospi_m16_m16); + v[13] = _mm_madd_epi16(u[7], k__cospi_m16_m16); + v[14] = _mm_madd_epi16(u[6], k__cospi_p16_m16); + v[15] = _mm_madd_epi16(u[7], k__cospi_p16_m16); + + u[0] = _mm_add_epi32(v[0], k__DCT_CONST_ROUNDING); + u[1] = _mm_add_epi32(v[1], k__DCT_CONST_ROUNDING); + u[2] = _mm_add_epi32(v[2], k__DCT_CONST_ROUNDING); + u[3] = _mm_add_epi32(v[3], k__DCT_CONST_ROUNDING); + u[4] = _mm_add_epi32(v[4], k__DCT_CONST_ROUNDING); + u[5] = _mm_add_epi32(v[5], k__DCT_CONST_ROUNDING); + u[6] = _mm_add_epi32(v[6], k__DCT_CONST_ROUNDING); + u[7] = _mm_add_epi32(v[7], k__DCT_CONST_ROUNDING); + u[8] = _mm_add_epi32(v[8], k__DCT_CONST_ROUNDING); + u[9] = _mm_add_epi32(v[9], k__DCT_CONST_ROUNDING); + u[10] = _mm_add_epi32(v[10], k__DCT_CONST_ROUNDING); + u[11] = _mm_add_epi32(v[11], k__DCT_CONST_ROUNDING); + u[12] = _mm_add_epi32(v[12], k__DCT_CONST_ROUNDING); + u[13] = _mm_add_epi32(v[13], k__DCT_CONST_ROUNDING); + u[14] = _mm_add_epi32(v[14], k__DCT_CONST_ROUNDING); + u[15] = _mm_add_epi32(v[15], k__DCT_CONST_ROUNDING); + + v[0] = _mm_srai_epi32(u[0], DCT_CONST_BITS); + v[1] = _mm_srai_epi32(u[1], DCT_CONST_BITS); + v[2] = _mm_srai_epi32(u[2], DCT_CONST_BITS); + v[3] = _mm_srai_epi32(u[3], DCT_CONST_BITS); + v[4] = _mm_srai_epi32(u[4], DCT_CONST_BITS); + v[5] = _mm_srai_epi32(u[5], DCT_CONST_BITS); + v[6] = _mm_srai_epi32(u[6], DCT_CONST_BITS); + v[7] = _mm_srai_epi32(u[7], DCT_CONST_BITS); + v[8] = _mm_srai_epi32(u[8], DCT_CONST_BITS); + v[9] = _mm_srai_epi32(u[9], DCT_CONST_BITS); + v[10] = _mm_srai_epi32(u[10], DCT_CONST_BITS); + v[11] = _mm_srai_epi32(u[11], DCT_CONST_BITS); + v[12] = _mm_srai_epi32(u[12], DCT_CONST_BITS); + v[13] = _mm_srai_epi32(u[13], DCT_CONST_BITS); + v[14] = _mm_srai_epi32(u[14], DCT_CONST_BITS); + v[15] = _mm_srai_epi32(u[15], DCT_CONST_BITS); + + in[0] = s[0]; + in[1] = _mm_sub_epi16(kZero, s[8]); + in[2] = s[12]; + in[3] = _mm_sub_epi16(kZero, s[4]); + in[4] = _mm_packs_epi32(v[4], v[5]); + in[5] = _mm_packs_epi32(v[12], v[13]); + in[6] = _mm_packs_epi32(v[8], v[9]); + in[7] = _mm_packs_epi32(v[0], v[1]); + in[8] = _mm_packs_epi32(v[2], v[3]); + in[9] = _mm_packs_epi32(v[10], v[11]); + in[10] = _mm_packs_epi32(v[14], v[15]); + in[11] = _mm_packs_epi32(v[6], v[7]); + in[12] = s[5]; + in[13] = _mm_sub_epi16(kZero, s[13]); + in[14] = s[9]; + in[15] = _mm_sub_epi16(kZero, s[1]); +} + +static void fdct16_sse2(__m128i *in0, __m128i *in1) { + fdct16_8col(in0); + fdct16_8col(in1); + transpose_16bit_16x16(in0, in1); +} + +static void fadst16_sse2(__m128i *in0, __m128i *in1) { + fadst16_8col(in0); + fadst16_8col(in1); + transpose_16bit_16x16(in0, in1); +} + +void vp9_fht16x16_sse2(const int16_t *input, tran_low_t *output, int stride, + int tx_type) { + __m128i in0[16], in1[16]; + + switch (tx_type) { + case DCT_DCT: vpx_fdct16x16_sse2(input, output, stride); break; + case ADST_DCT: + load_buffer_16x16(input, in0, in1, stride); + fadst16_sse2(in0, in1); + right_shift_16x16(in0, in1); + fdct16_sse2(in0, in1); + write_buffer_16x16(output, in0, in1, 16); + break; + case DCT_ADST: + load_buffer_16x16(input, in0, in1, stride); + fdct16_sse2(in0, in1); + right_shift_16x16(in0, in1); + fadst16_sse2(in0, in1); + write_buffer_16x16(output, in0, in1, 16); + break; + default: + assert(tx_type == ADST_ADST); + load_buffer_16x16(input, in0, in1, stride); + fadst16_sse2(in0, in1); + right_shift_16x16(in0, in1); + fadst16_sse2(in0, in1); + write_buffer_16x16(output, in0, in1, 16); + break; + } +} |