Commit 15a47db7 authored by Linfeng Zhang's avatar Linfeng Zhang
Browse files

Extract inlined 16x16 idct sse2 code into header file

Will be called by high bitdepth functions.

Change-Id: I76727df00941b5a27adceaba8347f275475fcd8c
parent 8c0ab760
......@@ -422,100 +422,6 @@ void iadst8_sse2(__m128i *in) {
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);
......@@ -604,181 +510,6 @@ void vpx_idct16x16_38_add_sse2(const tran_low_t *input, uint8_t *dest,
}
}
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,
int stride) {
__m128i in[16], l[16];
......
......@@ -447,6 +447,275 @@ static INLINE void idct8x8_12_add_kernel_sse2(__m128i *const io /*io[8]*/) {
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]);
}