ref: 15a47db73081109aa4167b339fff1f40bcf01e67
parent: 8c0ab7607e14cf63eb56a3f92b971100b4c9ef31
author: Linfeng Zhang <linfengz@google.com>
date: Wed Aug 2 12:17:43 EDT 2017
Extract inlined 16x16 idct sse2 code into header file Will be called by high bitdepth functions. Change-Id: I76727df00941b5a27adceaba8347f275475fcd8c
--- a/vpx_dsp/x86/inv_txfm_sse2.c
+++ b/vpx_dsp/x86/inv_txfm_sse2.c
@@ -422,100 +422,6 @@
in[7] = _mm_sub_epi16(k__const_0, s1);
}
-static INLINE void idct16_8col(__m128i *const io /*io[16]*/) {- __m128i step1[16], step2[16];
-
- // stage 2
- multiplication_and_add(io[1], io[15], (int)cospi_30_64, (int)cospi_2_64,
- &step2[8], &step2[15]);
- multiplication_and_add(io[9], io[7], (int)cospi_14_64, (int)cospi_18_64,
- &step2[9], &step2[14]);
- multiplication_and_add(io[5], io[11], (int)cospi_22_64, (int)cospi_10_64,
- &step2[10], &step2[13]);
- multiplication_and_add(io[13], io[3], (int)cospi_6_64, (int)cospi_26_64,
- &step2[11], &step2[12]);
-
- // stage 3
- multiplication_and_add(io[2], io[14], (int)cospi_28_64, (int)cospi_4_64,
- &step1[4], &step1[7]);
- multiplication_and_add(io[10], io[6], (int)cospi_12_64, (int)cospi_20_64,
- &step1[5], &step1[6]);
- step1[8] = _mm_add_epi16(step2[8], step2[9]);
- step1[9] = _mm_sub_epi16(step2[8], step2[9]);
- step1[10] = _mm_sub_epi16(step2[11], step2[10]);
- step1[11] = _mm_add_epi16(step2[10], step2[11]);
- step1[12] = _mm_add_epi16(step2[12], step2[13]);
- step1[13] = _mm_sub_epi16(step2[12], step2[13]);
- step1[14] = _mm_sub_epi16(step2[15], step2[14]);
- step1[15] = _mm_add_epi16(step2[14], step2[15]);
-
- // stage 4
- multiplication_and_add(io[0], io[8], (int)cospi_16_64, (int)cospi_16_64,
- &step2[1], &step2[0]);
- multiplication_and_add(io[4], io[12], (int)cospi_24_64, (int)cospi_8_64,
- &step2[2], &step2[3]);
- multiplication_and_add(step1[14], step1[9], (int)cospi_24_64, (int)cospi_8_64,
- &step2[9], &step2[14]);
- multiplication_and_add(step1[10], step1[13], -(int)cospi_8_64,
- -(int)cospi_24_64, &step2[13], &step2[10]);
- step2[5] = _mm_sub_epi16(step1[4], step1[5]);
- step1[4] = _mm_add_epi16(step1[4], step1[5]);
- step2[6] = _mm_sub_epi16(step1[7], step1[6]);
- step1[7] = _mm_add_epi16(step1[6], step1[7]);
- step2[8] = step1[8];
- step2[11] = step1[11];
- step2[12] = step1[12];
- step2[15] = step1[15];
-
- // stage 5
- step1[0] = _mm_add_epi16(step2[0], step2[3]);
- step1[1] = _mm_add_epi16(step2[1], step2[2]);
- step1[2] = _mm_sub_epi16(step2[1], step2[2]);
- step1[3] = _mm_sub_epi16(step2[0], step2[3]);
- multiplication_and_add(step2[6], step2[5], (int)cospi_16_64, (int)cospi_16_64,
- &step1[5], &step1[6]);
- step1[8] = _mm_add_epi16(step2[8], step2[11]);
- step1[9] = _mm_add_epi16(step2[9], step2[10]);
- step1[10] = _mm_sub_epi16(step2[9], step2[10]);
- step1[11] = _mm_sub_epi16(step2[8], step2[11]);
- step1[12] = _mm_sub_epi16(step2[15], step2[12]);
- step1[13] = _mm_sub_epi16(step2[14], step2[13]);
- step1[14] = _mm_add_epi16(step2[14], step2[13]);
- step1[15] = _mm_add_epi16(step2[15], step2[12]);
-
- // stage 6
- step2[0] = _mm_add_epi16(step1[0], step1[7]);
- step2[1] = _mm_add_epi16(step1[1], step1[6]);
- step2[2] = _mm_add_epi16(step1[2], step1[5]);
- step2[3] = _mm_add_epi16(step1[3], step1[4]);
- step2[4] = _mm_sub_epi16(step1[3], step1[4]);
- step2[5] = _mm_sub_epi16(step1[2], step1[5]);
- step2[6] = _mm_sub_epi16(step1[1], step1[6]);
- step2[7] = _mm_sub_epi16(step1[0], step1[7]);
- multiplication_and_add(step1[13], step1[10], (int)cospi_16_64,
- (int)cospi_16_64, &step2[10], &step2[13]);
- multiplication_and_add(step1[12], step1[11], (int)cospi_16_64,
- (int)cospi_16_64, &step2[11], &step2[12]);
-
- // stage 7
- io[0] = _mm_add_epi16(step2[0], step1[15]);
- io[1] = _mm_add_epi16(step2[1], step1[14]);
- io[2] = _mm_add_epi16(step2[2], step2[13]);
- io[3] = _mm_add_epi16(step2[3], step2[12]);
- io[4] = _mm_add_epi16(step2[4], step2[11]);
- io[5] = _mm_add_epi16(step2[5], step2[10]);
- io[6] = _mm_add_epi16(step2[6], step1[9]);
- io[7] = _mm_add_epi16(step2[7], step1[8]);
- io[8] = _mm_sub_epi16(step2[7], step1[8]);
- io[9] = _mm_sub_epi16(step2[6], step1[9]);
- io[10] = _mm_sub_epi16(step2[5], step2[10]);
- io[11] = _mm_sub_epi16(step2[4], step2[11]);
- io[12] = _mm_sub_epi16(step2[3], step2[12]);
- io[13] = _mm_sub_epi16(step2[2], step2[13]);
- io[14] = _mm_sub_epi16(step2[1], step1[14]);
- io[15] = _mm_sub_epi16(step2[0], step1[15]);
-}
-
static INLINE void idct16_load8x8(const tran_low_t *const input,
__m128i *const in) {in[0] = load_input_data8(input + 0 * 16);
@@ -602,181 +508,6 @@
dest += 8;
}
-}
-
-static INLINE void idct16x16_10_pass1(const __m128i *const input /*input[4]*/,
- __m128i *const output /*output[16]*/) {- const __m128i zero = _mm_setzero_si128();
- const __m128i k__cospi_p16_p16 = pair_set_epi16(cospi_16_64, cospi_16_64);
- const __m128i k__cospi_m16_p16 = pair_set_epi16(-cospi_16_64, cospi_16_64);
- __m128i step1[16], step2[16];
-
- transpose_16bit_4x4(input, output);
-
- // stage 2
- {- const __m128i k__cospi_p30_m02 = pair_set_epi16(cospi_30_64, -cospi_2_64);
- const __m128i k__cospi_p02_p30 = pair_set_epi16(cospi_2_64, cospi_30_64);
- const __m128i k__cospi_p06_m26 = pair_set_epi16(cospi_6_64, -cospi_26_64);
- const __m128i k__cospi_p26_p06 = pair_set_epi16(cospi_26_64, cospi_6_64);
- const __m128i lo_1_15 = _mm_unpackhi_epi16(output[0], zero);
- const __m128i lo_13_3 = _mm_unpackhi_epi16(zero, output[1]);
- step2[8] = idct_calc_wraplow_sse2(k__cospi_p30_m02, k__cospi_p02_p30,
- lo_1_15); // step2 8&15
- step2[11] = idct_calc_wraplow_sse2(k__cospi_p06_m26, k__cospi_p26_p06,
- lo_13_3); // step2 11&12
- }
-
- // stage 3
- {- const __m128i k__cospi_p28_m04 = pair_set_epi16(cospi_28_64, -cospi_4_64);
- const __m128i k__cospi_p04_p28 = pair_set_epi16(cospi_4_64, cospi_28_64);
- const __m128i lo_2_14 = _mm_unpacklo_epi16(output[1], zero);
- step1[4] = idct_calc_wraplow_sse2(k__cospi_p28_m04, k__cospi_p04_p28,
- lo_2_14); // step1 4&7
- step1[13] = _mm_unpackhi_epi64(step2[11], zero);
- step1[14] = _mm_unpackhi_epi64(step2[8], zero);
- }
-
- // stage 4
- {- const __m128i k__cospi_m08_p24 = pair_set_epi16(-cospi_8_64, cospi_24_64);
- const __m128i k__cospi_p24_p08 = pair_set_epi16(cospi_24_64, cospi_8_64);
- const __m128i k__cospi_m24_m08 = pair_set_epi16(-cospi_24_64, -cospi_8_64);
- const __m128i lo_0_8 = _mm_unpacklo_epi16(output[0], zero);
- const __m128i lo_9_14 = _mm_unpacklo_epi16(step2[8], step1[14]);
- const __m128i lo_10_13 = _mm_unpacklo_epi16(step2[11], step1[13]);
- const __m128i t = idct_madd_round_shift_sse2(lo_0_8, k__cospi_p16_p16);
- step1[0] = _mm_packs_epi32(t, t); // step2 0&1
- step2[9] = idct_calc_wraplow_sse2(k__cospi_m08_p24, k__cospi_p24_p08,
- lo_9_14); // step2 9&14
- step2[10] = idct_calc_wraplow_sse2(k__cospi_m24_m08, k__cospi_m08_p24,
- lo_10_13); // step2 10&13
- step2[6] = _mm_unpackhi_epi64(step1[4], zero);
- }
-
- // stage 5
- {- const __m128i lo_5_6 = _mm_unpacklo_epi16(step1[4], step2[6]);
- step1[6] = idct_calc_wraplow_sse2(k__cospi_p16_p16, k__cospi_m16_p16,
- lo_5_6); // step1 6&5
- step1[8] = _mm_add_epi16(step2[8], step2[11]);
- step1[9] = _mm_add_epi16(step2[9], step2[10]);
- step1[10] = _mm_sub_epi16(step2[9], step2[10]);
- step1[11] = _mm_sub_epi16(step2[8], step2[11]);
- step1[12] = _mm_unpackhi_epi64(step1[11], zero);
- step1[13] = _mm_unpackhi_epi64(step1[10], zero);
- step1[14] = _mm_unpackhi_epi64(step1[9], zero);
- step1[15] = _mm_unpackhi_epi64(step1[8], zero);
- }
-
- // stage 6
- {- const __m128i lo_10_13 = _mm_unpacklo_epi16(step1[10], step1[13]);
- const __m128i lo_11_12 = _mm_unpacklo_epi16(step1[11], step1[12]);
- step2[10] = idct_calc_wraplow_sse2(k__cospi_m16_p16, k__cospi_p16_p16,
- lo_10_13); // step2 10&13
- step2[11] = idct_calc_wraplow_sse2(k__cospi_m16_p16, k__cospi_p16_p16,
- lo_11_12); // step2 11&12
- step2[13] = _mm_unpackhi_epi64(step2[10], zero);
- step2[12] = _mm_unpackhi_epi64(step2[11], zero);
- step2[3] = _mm_add_epi16(step1[0], step1[4]);
- step2[1] = _mm_add_epi16(step1[0], step1[6]);
- step2[6] = _mm_sub_epi16(step1[0], step1[6]);
- step2[4] = _mm_sub_epi16(step1[0], step1[4]);
- step2[0] = _mm_unpackhi_epi64(step2[3], zero);
- step2[2] = _mm_unpackhi_epi64(step2[1], zero);
- step2[5] = _mm_unpackhi_epi64(step2[6], zero);
- step2[7] = _mm_unpackhi_epi64(step2[4], zero);
- }
-
- // stage 7. Left 8x16 only.
- output[0] = _mm_add_epi16(step2[0], step1[15]);
- output[1] = _mm_add_epi16(step2[1], step1[14]);
- output[2] = _mm_add_epi16(step2[2], step2[13]);
- output[3] = _mm_add_epi16(step2[3], step2[12]);
- output[4] = _mm_add_epi16(step2[4], step2[11]);
- output[5] = _mm_add_epi16(step2[5], step2[10]);
- output[6] = _mm_add_epi16(step2[6], step1[9]);
- output[7] = _mm_add_epi16(step2[7], step1[8]);
- output[8] = _mm_sub_epi16(step2[7], step1[8]);
- output[9] = _mm_sub_epi16(step2[6], step1[9]);
- output[10] = _mm_sub_epi16(step2[5], step2[10]);
- output[11] = _mm_sub_epi16(step2[4], step2[11]);
- output[12] = _mm_sub_epi16(step2[3], step2[12]);
- output[13] = _mm_sub_epi16(step2[2], step2[13]);
- output[14] = _mm_sub_epi16(step2[1], step1[14]);
- output[15] = _mm_sub_epi16(step2[0], step1[15]);
-}
-
-static INLINE void idct16x16_10_pass2(__m128i *const l /*l[8]*/,
- __m128i *const io /*io[16]*/) {- const __m128i zero = _mm_setzero_si128();
- __m128i step1[16], step2[16];
-
- transpose_16bit_4x8(l, io);
-
- // stage 2
- multiplication_and_add(io[1], zero, (int)cospi_30_64, (int)cospi_2_64,
- &step2[8], &step2[15]);
- multiplication_and_add(zero, io[3], (int)cospi_6_64, (int)cospi_26_64,
- &step2[11], &step2[12]);
-
- // stage 3
- multiplication_and_add(io[2], zero, (int)cospi_28_64, (int)cospi_4_64,
- &step1[4], &step1[7]);
-
- // stage 4
- multiplication_and_add(io[0], zero, (int)cospi_16_64, (int)cospi_16_64,
- &step1[1], &step1[0]);
- multiplication_and_add(step2[15], step2[8], (int)cospi_24_64, (int)cospi_8_64,
- &step2[9], &step2[14]);
- multiplication_and_add(step2[11], step2[12], -(int)cospi_8_64,
- -(int)cospi_24_64, &step2[13], &step2[10]);
-
- // stage 5
- multiplication_and_add(step1[7], step1[4], (int)cospi_16_64, (int)cospi_16_64,
- &step1[5], &step1[6]);
- step1[8] = _mm_add_epi16(step2[8], step2[11]);
- step1[9] = _mm_add_epi16(step2[9], step2[10]);
- step1[10] = _mm_sub_epi16(step2[9], step2[10]);
- step1[11] = _mm_sub_epi16(step2[8], step2[11]);
- step1[12] = _mm_sub_epi16(step2[15], step2[12]);
- step1[13] = _mm_sub_epi16(step2[14], step2[13]);
- step1[14] = _mm_add_epi16(step2[14], step2[13]);
- step1[15] = _mm_add_epi16(step2[15], step2[12]);
-
- // stage 6
- step2[0] = _mm_add_epi16(step1[0], step1[7]);
- step2[1] = _mm_add_epi16(step1[1], step1[6]);
- step2[2] = _mm_add_epi16(step1[1], step1[5]);
- step2[3] = _mm_add_epi16(step1[0], step1[4]);
- step2[4] = _mm_sub_epi16(step1[0], step1[4]);
- step2[5] = _mm_sub_epi16(step1[1], step1[5]);
- step2[6] = _mm_sub_epi16(step1[1], step1[6]);
- step2[7] = _mm_sub_epi16(step1[0], step1[7]);
- multiplication_and_add(step1[13], step1[10], (int)cospi_16_64,
- (int)cospi_16_64, &step2[10], &step2[13]);
- multiplication_and_add(step1[12], step1[11], (int)cospi_16_64,
- (int)cospi_16_64, &step2[11], &step2[12]);
-
- // stage 7
- io[0] = _mm_add_epi16(step2[0], step1[15]);
- io[1] = _mm_add_epi16(step2[1], step1[14]);
- io[2] = _mm_add_epi16(step2[2], step2[13]);
- io[3] = _mm_add_epi16(step2[3], step2[12]);
- io[4] = _mm_add_epi16(step2[4], step2[11]);
- io[5] = _mm_add_epi16(step2[5], step2[10]);
- io[6] = _mm_add_epi16(step2[6], step1[9]);
- io[7] = _mm_add_epi16(step2[7], step1[8]);
- io[8] = _mm_sub_epi16(step2[7], step1[8]);
- io[9] = _mm_sub_epi16(step2[6], step1[9]);
- io[10] = _mm_sub_epi16(step2[5], step2[10]);
- io[11] = _mm_sub_epi16(step2[4], step2[11]);
- io[12] = _mm_sub_epi16(step2[3], step2[12]);
- io[13] = _mm_sub_epi16(step2[2], step2[13]);
- io[14] = _mm_sub_epi16(step2[1], step1[14]);
- io[15] = _mm_sub_epi16(step2[0], step1[15]);
}
void vpx_idct16x16_10_add_sse2(const tran_low_t *input, uint8_t *dest,
--- a/vpx_dsp/x86/inv_txfm_sse2.h
+++ b/vpx_dsp/x86/inv_txfm_sse2.h
@@ -447,6 +447,275 @@
idct8(io, io);
}
+static INLINE void idct16_8col(__m128i *const io /*io[16]*/) {+ __m128i step1[16], step2[16];
+
+ // stage 2
+ multiplication_and_add(io[1], io[15], (int)cospi_30_64, (int)cospi_2_64,
+ &step2[8], &step2[15]);
+ multiplication_and_add(io[9], io[7], (int)cospi_14_64, (int)cospi_18_64,
+ &step2[9], &step2[14]);
+ multiplication_and_add(io[5], io[11], (int)cospi_22_64, (int)cospi_10_64,
+ &step2[10], &step2[13]);
+ multiplication_and_add(io[13], io[3], (int)cospi_6_64, (int)cospi_26_64,
+ &step2[11], &step2[12]);
+
+ // stage 3
+ multiplication_and_add(io[2], io[14], (int)cospi_28_64, (int)cospi_4_64,
+ &step1[4], &step1[7]);
+ multiplication_and_add(io[10], io[6], (int)cospi_12_64, (int)cospi_20_64,
+ &step1[5], &step1[6]);
+ step1[8] = _mm_add_epi16(step2[8], step2[9]);
+ step1[9] = _mm_sub_epi16(step2[8], step2[9]);
+ step1[10] = _mm_sub_epi16(step2[11], step2[10]);
+ step1[11] = _mm_add_epi16(step2[10], step2[11]);
+ step1[12] = _mm_add_epi16(step2[12], step2[13]);
+ step1[13] = _mm_sub_epi16(step2[12], step2[13]);
+ step1[14] = _mm_sub_epi16(step2[15], step2[14]);
+ step1[15] = _mm_add_epi16(step2[14], step2[15]);
+
+ // stage 4
+ multiplication_and_add(io[0], io[8], (int)cospi_16_64, (int)cospi_16_64,
+ &step2[1], &step2[0]);
+ multiplication_and_add(io[4], io[12], (int)cospi_24_64, (int)cospi_8_64,
+ &step2[2], &step2[3]);
+ multiplication_and_add(step1[14], step1[9], (int)cospi_24_64, (int)cospi_8_64,
+ &step2[9], &step2[14]);
+ multiplication_and_add(step1[10], step1[13], -(int)cospi_8_64,
+ -(int)cospi_24_64, &step2[13], &step2[10]);
+ step2[5] = _mm_sub_epi16(step1[4], step1[5]);
+ step1[4] = _mm_add_epi16(step1[4], step1[5]);
+ step2[6] = _mm_sub_epi16(step1[7], step1[6]);
+ step1[7] = _mm_add_epi16(step1[6], step1[7]);
+ step2[8] = step1[8];
+ step2[11] = step1[11];
+ step2[12] = step1[12];
+ step2[15] = step1[15];
+
+ // stage 5
+ step1[0] = _mm_add_epi16(step2[0], step2[3]);
+ step1[1] = _mm_add_epi16(step2[1], step2[2]);
+ step1[2] = _mm_sub_epi16(step2[1], step2[2]);
+ step1[3] = _mm_sub_epi16(step2[0], step2[3]);
+ multiplication_and_add(step2[6], step2[5], (int)cospi_16_64, (int)cospi_16_64,
+ &step1[5], &step1[6]);
+ step1[8] = _mm_add_epi16(step2[8], step2[11]);
+ step1[9] = _mm_add_epi16(step2[9], step2[10]);
+ step1[10] = _mm_sub_epi16(step2[9], step2[10]);
+ step1[11] = _mm_sub_epi16(step2[8], step2[11]);
+ step1[12] = _mm_sub_epi16(step2[15], step2[12]);
+ step1[13] = _mm_sub_epi16(step2[14], step2[13]);
+ step1[14] = _mm_add_epi16(step2[14], step2[13]);
+ step1[15] = _mm_add_epi16(step2[15], step2[12]);
+
+ // stage 6
+ step2[0] = _mm_add_epi16(step1[0], step1[7]);
+ step2[1] = _mm_add_epi16(step1[1], step1[6]);
+ step2[2] = _mm_add_epi16(step1[2], step1[5]);
+ step2[3] = _mm_add_epi16(step1[3], step1[4]);
+ step2[4] = _mm_sub_epi16(step1[3], step1[4]);
+ step2[5] = _mm_sub_epi16(step1[2], step1[5]);
+ step2[6] = _mm_sub_epi16(step1[1], step1[6]);
+ step2[7] = _mm_sub_epi16(step1[0], step1[7]);
+ multiplication_and_add(step1[13], step1[10], (int)cospi_16_64,
+ (int)cospi_16_64, &step2[10], &step2[13]);
+ multiplication_and_add(step1[12], step1[11], (int)cospi_16_64,
+ (int)cospi_16_64, &step2[11], &step2[12]);
+
+ // stage 7
+ io[0] = _mm_add_epi16(step2[0], step1[15]);
+ io[1] = _mm_add_epi16(step2[1], step1[14]);
+ io[2] = _mm_add_epi16(step2[2], step2[13]);
+ io[3] = _mm_add_epi16(step2[3], step2[12]);
+ io[4] = _mm_add_epi16(step2[4], step2[11]);
+ io[5] = _mm_add_epi16(step2[5], step2[10]);
+ io[6] = _mm_add_epi16(step2[6], step1[9]);
+ io[7] = _mm_add_epi16(step2[7], step1[8]);
+ io[8] = _mm_sub_epi16(step2[7], step1[8]);
+ io[9] = _mm_sub_epi16(step2[6], step1[9]);
+ io[10] = _mm_sub_epi16(step2[5], step2[10]);
+ io[11] = _mm_sub_epi16(step2[4], step2[11]);
+ io[12] = _mm_sub_epi16(step2[3], step2[12]);
+ io[13] = _mm_sub_epi16(step2[2], step2[13]);
+ io[14] = _mm_sub_epi16(step2[1], step1[14]);
+ io[15] = _mm_sub_epi16(step2[0], step1[15]);
+}
+
+static INLINE void idct16x16_10_pass1(const __m128i *const input /*input[4]*/,
+ __m128i *const output /*output[16]*/) {+ const __m128i zero = _mm_setzero_si128();
+ const __m128i k__cospi_p16_p16 = pair_set_epi16(cospi_16_64, cospi_16_64);
+ const __m128i k__cospi_m16_p16 = pair_set_epi16(-cospi_16_64, cospi_16_64);
+ __m128i step1[16], step2[16];
+
+ transpose_16bit_4x4(input, output);
+
+ // stage 2
+ {+ const __m128i k__cospi_p30_m02 = pair_set_epi16(cospi_30_64, -cospi_2_64);
+ const __m128i k__cospi_p02_p30 = pair_set_epi16(cospi_2_64, cospi_30_64);
+ const __m128i k__cospi_p06_m26 = pair_set_epi16(cospi_6_64, -cospi_26_64);
+ const __m128i k__cospi_p26_p06 = pair_set_epi16(cospi_26_64, cospi_6_64);
+ const __m128i lo_1_15 = _mm_unpackhi_epi16(output[0], zero);
+ const __m128i lo_13_3 = _mm_unpackhi_epi16(zero, output[1]);
+ step2[8] = idct_calc_wraplow_sse2(k__cospi_p30_m02, k__cospi_p02_p30,
+ lo_1_15); // step2 8&15
+ step2[11] = idct_calc_wraplow_sse2(k__cospi_p06_m26, k__cospi_p26_p06,
+ lo_13_3); // step2 11&12
+ }
+
+ // stage 3
+ {+ const __m128i k__cospi_p28_m04 = pair_set_epi16(cospi_28_64, -cospi_4_64);
+ const __m128i k__cospi_p04_p28 = pair_set_epi16(cospi_4_64, cospi_28_64);
+ const __m128i lo_2_14 = _mm_unpacklo_epi16(output[1], zero);
+ step1[4] = idct_calc_wraplow_sse2(k__cospi_p28_m04, k__cospi_p04_p28,
+ lo_2_14); // step1 4&7
+ step1[13] = _mm_unpackhi_epi64(step2[11], zero);
+ step1[14] = _mm_unpackhi_epi64(step2[8], zero);
+ }
+
+ // stage 4
+ {+ const __m128i k__cospi_m08_p24 = pair_set_epi16(-cospi_8_64, cospi_24_64);
+ const __m128i k__cospi_p24_p08 = pair_set_epi16(cospi_24_64, cospi_8_64);
+ const __m128i k__cospi_m24_m08 = pair_set_epi16(-cospi_24_64, -cospi_8_64);
+ const __m128i lo_0_8 = _mm_unpacklo_epi16(output[0], zero);
+ const __m128i lo_9_14 = _mm_unpacklo_epi16(step2[8], step1[14]);
+ const __m128i lo_10_13 = _mm_unpacklo_epi16(step2[11], step1[13]);
+ const __m128i t = idct_madd_round_shift_sse2(lo_0_8, k__cospi_p16_p16);
+ step1[0] = _mm_packs_epi32(t, t); // step2 0&1
+ step2[9] = idct_calc_wraplow_sse2(k__cospi_m08_p24, k__cospi_p24_p08,
+ lo_9_14); // step2 9&14
+ step2[10] = idct_calc_wraplow_sse2(k__cospi_m24_m08, k__cospi_m08_p24,
+ lo_10_13); // step2 10&13
+ step2[6] = _mm_unpackhi_epi64(step1[4], zero);
+ }
+
+ // stage 5
+ {+ const __m128i lo_5_6 = _mm_unpacklo_epi16(step1[4], step2[6]);
+ step1[6] = idct_calc_wraplow_sse2(k__cospi_p16_p16, k__cospi_m16_p16,
+ lo_5_6); // step1 6&5
+ step1[8] = _mm_add_epi16(step2[8], step2[11]);
+ step1[9] = _mm_add_epi16(step2[9], step2[10]);
+ step1[10] = _mm_sub_epi16(step2[9], step2[10]);
+ step1[11] = _mm_sub_epi16(step2[8], step2[11]);
+ step1[12] = _mm_unpackhi_epi64(step1[11], zero);
+ step1[13] = _mm_unpackhi_epi64(step1[10], zero);
+ step1[14] = _mm_unpackhi_epi64(step1[9], zero);
+ step1[15] = _mm_unpackhi_epi64(step1[8], zero);
+ }
+
+ // stage 6
+ {+ const __m128i lo_10_13 = _mm_unpacklo_epi16(step1[10], step1[13]);
+ const __m128i lo_11_12 = _mm_unpacklo_epi16(step1[11], step1[12]);
+ step2[10] = idct_calc_wraplow_sse2(k__cospi_m16_p16, k__cospi_p16_p16,
+ lo_10_13); // step2 10&13
+ step2[11] = idct_calc_wraplow_sse2(k__cospi_m16_p16, k__cospi_p16_p16,
+ lo_11_12); // step2 11&12
+ step2[13] = _mm_unpackhi_epi64(step2[10], zero);
+ step2[12] = _mm_unpackhi_epi64(step2[11], zero);
+ step2[3] = _mm_add_epi16(step1[0], step1[4]);
+ step2[1] = _mm_add_epi16(step1[0], step1[6]);
+ step2[6] = _mm_sub_epi16(step1[0], step1[6]);
+ step2[4] = _mm_sub_epi16(step1[0], step1[4]);
+ step2[0] = _mm_unpackhi_epi64(step2[3], zero);
+ step2[2] = _mm_unpackhi_epi64(step2[1], zero);
+ step2[5] = _mm_unpackhi_epi64(step2[6], zero);
+ step2[7] = _mm_unpackhi_epi64(step2[4], zero);
+ }
+
+ // stage 7. Left 8x16 only.
+ output[0] = _mm_add_epi16(step2[0], step1[15]);
+ output[1] = _mm_add_epi16(step2[1], step1[14]);
+ output[2] = _mm_add_epi16(step2[2], step2[13]);
+ output[3] = _mm_add_epi16(step2[3], step2[12]);
+ output[4] = _mm_add_epi16(step2[4], step2[11]);
+ output[5] = _mm_add_epi16(step2[5], step2[10]);
+ output[6] = _mm_add_epi16(step2[6], step1[9]);
+ output[7] = _mm_add_epi16(step2[7], step1[8]);
+ output[8] = _mm_sub_epi16(step2[7], step1[8]);
+ output[9] = _mm_sub_epi16(step2[6], step1[9]);
+ output[10] = _mm_sub_epi16(step2[5], step2[10]);
+ output[11] = _mm_sub_epi16(step2[4], step2[11]);
+ output[12] = _mm_sub_epi16(step2[3], step2[12]);
+ output[13] = _mm_sub_epi16(step2[2], step2[13]);
+ output[14] = _mm_sub_epi16(step2[1], step1[14]);
+ output[15] = _mm_sub_epi16(step2[0], step1[15]);
+}
+
+static INLINE void idct16x16_10_pass2(__m128i *const l /*l[8]*/,
+ __m128i *const io /*io[16]*/) {+ const __m128i zero = _mm_setzero_si128();
+ __m128i step1[16], step2[16];
+
+ transpose_16bit_4x8(l, io);
+
+ // stage 2
+ multiplication_and_add(io[1], zero, (int)cospi_30_64, (int)cospi_2_64,
+ &step2[8], &step2[15]);
+ multiplication_and_add(zero, io[3], (int)cospi_6_64, (int)cospi_26_64,
+ &step2[11], &step2[12]);
+
+ // stage 3
+ multiplication_and_add(io[2], zero, (int)cospi_28_64, (int)cospi_4_64,
+ &step1[4], &step1[7]);
+
+ // stage 4
+ multiplication_and_add(io[0], zero, (int)cospi_16_64, (int)cospi_16_64,
+ &step1[1], &step1[0]);
+ multiplication_and_add(step2[15], step2[8], (int)cospi_24_64, (int)cospi_8_64,
+ &step2[9], &step2[14]);
+ multiplication_and_add(step2[11], step2[12], -(int)cospi_8_64,
+ -(int)cospi_24_64, &step2[13], &step2[10]);
+
+ // stage 5
+ multiplication_and_add(step1[7], step1[4], (int)cospi_16_64, (int)cospi_16_64,
+ &step1[5], &step1[6]);
+ step1[8] = _mm_add_epi16(step2[8], step2[11]);
+ step1[9] = _mm_add_epi16(step2[9], step2[10]);
+ step1[10] = _mm_sub_epi16(step2[9], step2[10]);
+ step1[11] = _mm_sub_epi16(step2[8], step2[11]);
+ step1[12] = _mm_sub_epi16(step2[15], step2[12]);
+ step1[13] = _mm_sub_epi16(step2[14], step2[13]);
+ step1[14] = _mm_add_epi16(step2[14], step2[13]);
+ step1[15] = _mm_add_epi16(step2[15], step2[12]);
+
+ // stage 6
+ step2[0] = _mm_add_epi16(step1[0], step1[7]);
+ step2[1] = _mm_add_epi16(step1[1], step1[6]);
+ step2[2] = _mm_add_epi16(step1[1], step1[5]);
+ step2[3] = _mm_add_epi16(step1[0], step1[4]);
+ step2[4] = _mm_sub_epi16(step1[0], step1[4]);
+ step2[5] = _mm_sub_epi16(step1[1], step1[5]);
+ step2[6] = _mm_sub_epi16(step1[1], step1[6]);
+ step2[7] = _mm_sub_epi16(step1[0], step1[7]);
+ multiplication_and_add(step1[13], step1[10], (int)cospi_16_64,
+ (int)cospi_16_64, &step2[10], &step2[13]);
+ multiplication_and_add(step1[12], step1[11], (int)cospi_16_64,
+ (int)cospi_16_64, &step2[11], &step2[12]);
+
+ // stage 7
+ io[0] = _mm_add_epi16(step2[0], step1[15]);
+ io[1] = _mm_add_epi16(step2[1], step1[14]);
+ io[2] = _mm_add_epi16(step2[2], step2[13]);
+ io[3] = _mm_add_epi16(step2[3], step2[12]);
+ io[4] = _mm_add_epi16(step2[4], step2[11]);
+ io[5] = _mm_add_epi16(step2[5], step2[10]);
+ io[6] = _mm_add_epi16(step2[6], step1[9]);
+ io[7] = _mm_add_epi16(step2[7], step1[8]);
+ io[8] = _mm_sub_epi16(step2[7], step1[8]);
+ io[9] = _mm_sub_epi16(step2[6], step1[9]);
+ io[10] = _mm_sub_epi16(step2[5], step2[10]);
+ io[11] = _mm_sub_epi16(step2[4], step2[11]);
+ io[12] = _mm_sub_epi16(step2[3], step2[12]);
+ io[13] = _mm_sub_epi16(step2[2], step2[13]);
+ io[14] = _mm_sub_epi16(step2[1], step1[14]);
+ io[15] = _mm_sub_epi16(step2[0], step1[15]);
+}
+
void idct4_sse2(__m128i *in);
void idct8_sse2(__m128i *in);
void idct16_sse2(__m128i *in0, __m128i *in1);