diff options
Diffstat (limited to 'third_party/aom/aom_dsp/x86/fwd_txfm_impl_sse2.h')
| -rw-r--r-- | third_party/aom/aom_dsp/x86/fwd_txfm_impl_sse2.h | 674 |
1 files changed, 2 insertions, 672 deletions
diff --git a/third_party/aom/aom_dsp/x86/fwd_txfm_impl_sse2.h b/third_party/aom/aom_dsp/x86/fwd_txfm_impl_sse2.h index 7bb1db70a..1e3d13ec8 100644 --- a/third_party/aom/aom_dsp/x86/fwd_txfm_impl_sse2.h +++ b/third_party/aom/aom_dsp/x86/fwd_txfm_impl_sse2.h @@ -11,7 +11,8 @@ #include <emmintrin.h> // SSE2 -#include "./aom_dsp_rtcd.h" +#include "config/aom_dsp_rtcd.h" + #include "aom_dsp/txfm_common.h" #include "aom_dsp/x86/fwd_txfm_sse2.h" #include "aom_dsp/x86/txfm_common_sse2.h" @@ -29,233 +30,6 @@ #define SUB_EPI16 _mm_sub_epi16 #endif -void FDCT4x4_2D(const int16_t *input, tran_low_t *output, int stride) { - // This 2D transform implements 4 vertical 1D transforms followed - // by 4 horizontal 1D transforms. The multiplies and adds are as given - // by Chen, Smith and Fralick ('77). The commands for moving the data - // around have been minimized by hand. - // For the purposes of the comments, the 16 inputs are referred to at i0 - // through iF (in raster order), intermediate variables are a0, b0, c0 - // through f, and correspond to the in-place computations mapped to input - // locations. The outputs, o0 through oF are labeled according to the - // output locations. - - // Constants - // These are the coefficients used for the multiplies. - // In the comments, pN means cos(N pi /64) and mN is -cos(N pi /64), - // where cospi_N_64 = cos(N pi /64) - const __m128i k__cospi_A = - octa_set_epi16(cospi_16_64, cospi_16_64, cospi_16_64, cospi_16_64, - cospi_16_64, -cospi_16_64, cospi_16_64, -cospi_16_64); - const __m128i k__cospi_B = - octa_set_epi16(cospi_16_64, -cospi_16_64, cospi_16_64, -cospi_16_64, - cospi_16_64, cospi_16_64, cospi_16_64, cospi_16_64); - const __m128i k__cospi_C = - octa_set_epi16(cospi_8_64, cospi_24_64, cospi_8_64, cospi_24_64, - cospi_24_64, -cospi_8_64, cospi_24_64, -cospi_8_64); - const __m128i k__cospi_D = - octa_set_epi16(cospi_24_64, -cospi_8_64, cospi_24_64, -cospi_8_64, - cospi_8_64, cospi_24_64, cospi_8_64, cospi_24_64); - const __m128i k__cospi_E = - octa_set_epi16(cospi_16_64, cospi_16_64, cospi_16_64, cospi_16_64, - cospi_16_64, cospi_16_64, cospi_16_64, cospi_16_64); - const __m128i k__cospi_F = - octa_set_epi16(cospi_16_64, -cospi_16_64, cospi_16_64, -cospi_16_64, - cospi_16_64, -cospi_16_64, cospi_16_64, -cospi_16_64); - const __m128i k__cospi_G = - octa_set_epi16(cospi_8_64, cospi_24_64, cospi_8_64, cospi_24_64, - -cospi_8_64, -cospi_24_64, -cospi_8_64, -cospi_24_64); - const __m128i k__cospi_H = - octa_set_epi16(cospi_24_64, -cospi_8_64, cospi_24_64, -cospi_8_64, - -cospi_24_64, cospi_8_64, -cospi_24_64, cospi_8_64); - - const __m128i k__DCT_CONST_ROUNDING = _mm_set1_epi32(DCT_CONST_ROUNDING); - // This second rounding constant saves doing some extra adds at the end - const __m128i k__DCT_CONST_ROUNDING2 = - _mm_set1_epi32(DCT_CONST_ROUNDING + (DCT_CONST_ROUNDING << 1)); - const int DCT_CONST_BITS2 = DCT_CONST_BITS + 2; - 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 in0, in1; -#if DCT_HIGH_BIT_DEPTH - __m128i cmp0, cmp1; - int test, overflow; -#endif - - // Load inputs. - in0 = _mm_loadl_epi64((const __m128i *)(input + 0 * stride)); - in1 = _mm_loadl_epi64((const __m128i *)(input + 1 * stride)); - // in0 = [i0 i1 i2 i3 iC iD iE iF] - // in1 = [i4 i5 i6 i7 i8 i9 iA iB] - in1 = _mm_unpacklo_epi64( - in1, _mm_loadl_epi64((const __m128i *)(input + 2 * stride))); - in0 = _mm_unpacklo_epi64( - in0, _mm_loadl_epi64((const __m128i *)(input + 3 * stride))); -#if DCT_HIGH_BIT_DEPTH - // Check inputs small enough to use optimised code - cmp0 = _mm_xor_si128(_mm_cmpgt_epi16(in0, _mm_set1_epi16(0x3ff)), - _mm_cmplt_epi16(in0, _mm_set1_epi16(0xfc00))); - cmp1 = _mm_xor_si128(_mm_cmpgt_epi16(in1, _mm_set1_epi16(0x3ff)), - _mm_cmplt_epi16(in1, _mm_set1_epi16(0xfc00))); - test = _mm_movemask_epi8(_mm_or_si128(cmp0, cmp1)); - if (test) { - aom_highbd_fdct4x4_c(input, output, stride); - return; - } -#endif // DCT_HIGH_BIT_DEPTH - - // multiply by 16 to give some extra precision - in0 = _mm_slli_epi16(in0, 4); - in1 = _mm_slli_epi16(in1, 4); - // if (i == 0 && input[0]) input[0] += 1; - // add 1 to the upper left pixel if it is non-zero, which helps reduce - // the round-trip error - { - // The mask will only contain whether the first value is zero, all - // other comparison will fail as something shifted by 4 (above << 4) - // can never be equal to one. To increment in the non-zero case, we - // add the mask and one for the first element: - // - if zero, mask = -1, v = v - 1 + 1 = v - // - if non-zero, mask = 0, v = v + 0 + 1 = v + 1 - __m128i mask = _mm_cmpeq_epi16(in0, k__nonzero_bias_a); - in0 = _mm_add_epi16(in0, mask); - in0 = _mm_add_epi16(in0, k__nonzero_bias_b); - } - // There are 4 total stages, alternating between an add/subtract stage - // followed by an multiply-and-add stage. - { - // Stage 1: Add/subtract - - // in0 = [i0 i1 i2 i3 iC iD iE iF] - // in1 = [i4 i5 i6 i7 i8 i9 iA iB] - const __m128i r0 = _mm_unpacklo_epi16(in0, in1); - const __m128i r1 = _mm_unpackhi_epi16(in0, in1); - // r0 = [i0 i4 i1 i5 i2 i6 i3 i7] - // r1 = [iC i8 iD i9 iE iA iF iB] - const __m128i r2 = _mm_shuffle_epi32(r0, 0xB4); - const __m128i r3 = _mm_shuffle_epi32(r1, 0xB4); - // r2 = [i0 i4 i1 i5 i3 i7 i2 i6] - // r3 = [iC i8 iD i9 iF iB iE iA] - - const __m128i t0 = _mm_add_epi16(r2, r3); - const __m128i t1 = _mm_sub_epi16(r2, r3); - // t0 = [a0 a4 a1 a5 a3 a7 a2 a6] - // t1 = [aC a8 aD a9 aF aB aE aA] - - // Stage 2: multiply by constants (which gets us into 32 bits). - // The constants needed here are: - // k__cospi_A = [p16 p16 p16 p16 p16 m16 p16 m16] - // k__cospi_B = [p16 m16 p16 m16 p16 p16 p16 p16] - // k__cospi_C = [p08 p24 p08 p24 p24 m08 p24 m08] - // k__cospi_D = [p24 m08 p24 m08 p08 p24 p08 p24] - const __m128i u0 = _mm_madd_epi16(t0, k__cospi_A); - const __m128i u2 = _mm_madd_epi16(t0, k__cospi_B); - const __m128i u1 = _mm_madd_epi16(t1, k__cospi_C); - const __m128i u3 = _mm_madd_epi16(t1, k__cospi_D); - // Then add and right-shift to get back to 16-bit range - const __m128i v0 = _mm_add_epi32(u0, k__DCT_CONST_ROUNDING); - const __m128i v1 = _mm_add_epi32(u1, k__DCT_CONST_ROUNDING); - const __m128i v2 = _mm_add_epi32(u2, k__DCT_CONST_ROUNDING); - const __m128i v3 = _mm_add_epi32(u3, k__DCT_CONST_ROUNDING); - const __m128i w0 = _mm_srai_epi32(v0, DCT_CONST_BITS); - const __m128i w1 = _mm_srai_epi32(v1, DCT_CONST_BITS); - const __m128i w2 = _mm_srai_epi32(v2, DCT_CONST_BITS); - const __m128i w3 = _mm_srai_epi32(v3, DCT_CONST_BITS); - // w0 = [b0 b1 b7 b6] - // w1 = [b8 b9 bF bE] - // w2 = [b4 b5 b3 b2] - // w3 = [bC bD bB bA] - const __m128i x0 = _mm_packs_epi32(w0, w1); - const __m128i x1 = _mm_packs_epi32(w2, w3); -#if DCT_HIGH_BIT_DEPTH - overflow = check_epi16_overflow_x2(&x0, &x1); - if (overflow) { - aom_highbd_fdct4x4_c(input, output, stride); - return; - } -#endif // DCT_HIGH_BIT_DEPTH - // x0 = [b0 b1 b7 b6 b8 b9 bF bE] - // x1 = [b4 b5 b3 b2 bC bD bB bA] - in0 = _mm_shuffle_epi32(x0, 0xD8); - in1 = _mm_shuffle_epi32(x1, 0x8D); - // in0 = [b0 b1 b8 b9 b7 b6 bF bE] - // in1 = [b3 b2 bB bA b4 b5 bC bD] - } - { - // vertical DCTs finished. Now we do the horizontal DCTs. - // Stage 3: Add/subtract - - // t0 = [c0 c1 c8 c9 c4 c5 cC cD] - // t1 = [c3 c2 cB cA -c7 -c6 -cF -cE] - const __m128i t0 = ADD_EPI16(in0, in1); - const __m128i t1 = SUB_EPI16(in0, in1); -#if DCT_HIGH_BIT_DEPTH - overflow = check_epi16_overflow_x2(&t0, &t1); - if (overflow) { - aom_highbd_fdct4x4_c(input, output, stride); - return; - } -#endif // DCT_HIGH_BIT_DEPTH - - // Stage 4: multiply by constants (which gets us into 32 bits). - { - // The constants needed here are: - // k__cospi_E = [p16 p16 p16 p16 p16 p16 p16 p16] - // k__cospi_F = [p16 m16 p16 m16 p16 m16 p16 m16] - // k__cospi_G = [p08 p24 p08 p24 m08 m24 m08 m24] - // k__cospi_H = [p24 m08 p24 m08 m24 p08 m24 p08] - const __m128i u0 = _mm_madd_epi16(t0, k__cospi_E); - const __m128i u1 = _mm_madd_epi16(t0, k__cospi_F); - const __m128i u2 = _mm_madd_epi16(t1, k__cospi_G); - const __m128i u3 = _mm_madd_epi16(t1, k__cospi_H); - // Then add and right-shift to get back to 16-bit range - // but this combines the final right-shift as well to save operations - // This unusual rounding operations is to maintain bit-accurate - // compatibility with the c version of this function which has two - // rounding steps in a row. - const __m128i v0 = _mm_add_epi32(u0, k__DCT_CONST_ROUNDING2); - const __m128i v1 = _mm_add_epi32(u1, k__DCT_CONST_ROUNDING2); - const __m128i v2 = _mm_add_epi32(u2, k__DCT_CONST_ROUNDING2); - const __m128i v3 = _mm_add_epi32(u3, k__DCT_CONST_ROUNDING2); - const __m128i w0 = _mm_srai_epi32(v0, DCT_CONST_BITS2); - const __m128i w1 = _mm_srai_epi32(v1, DCT_CONST_BITS2); - const __m128i w2 = _mm_srai_epi32(v2, DCT_CONST_BITS2); - const __m128i w3 = _mm_srai_epi32(v3, DCT_CONST_BITS2); - // w0 = [o0 o4 o8 oC] - // w1 = [o2 o6 oA oE] - // w2 = [o1 o5 o9 oD] - // w3 = [o3 o7 oB oF] - // remember the o's are numbered according to the correct output location - const __m128i x0 = _mm_packs_epi32(w0, w1); - const __m128i x1 = _mm_packs_epi32(w2, w3); -#if DCT_HIGH_BIT_DEPTH - overflow = check_epi16_overflow_x2(&x0, &x1); - if (overflow) { - aom_highbd_fdct4x4_c(input, output, stride); - return; - } -#endif // DCT_HIGH_BIT_DEPTH - { - // x0 = [o0 o4 o8 oC o2 o6 oA oE] - // x1 = [o1 o5 o9 oD o3 o7 oB oF] - const __m128i y0 = _mm_unpacklo_epi16(x0, x1); - const __m128i y1 = _mm_unpackhi_epi16(x0, x1); - // y0 = [o0 o1 o4 o5 o8 o9 oC oD] - // y1 = [o2 o3 o6 o7 oA oB oE oF] - in0 = _mm_unpacklo_epi32(y0, y1); - // in0 = [o0 o1 o2 o3 o4 o5 o6 o7] - in1 = _mm_unpackhi_epi32(y0, y1); - // in1 = [o8 o9 oA oB oC oD oE oF] - } - } - } - // Post-condition (v + 1) >> 2 is now incorporated into previous - // add and right-shift commands. Only 2 store instructions needed - // because we are using the fact that 1/3 are stored just after 0/2. - storeu_output(&in0, output + 0 * 4); - storeu_output(&in1, output + 2 * 4); -} - void FDCT8x8_2D(const int16_t *input, tran_low_t *output, int stride) { int pass; // Constants @@ -566,449 +340,5 @@ void FDCT8x8_2D(const int16_t *input, tran_low_t *output, int stride) { } } -void FDCT16x16_2D(const int16_t *input, tran_low_t *output, int stride) { - // The 2D transform is done with two passes which are actually pretty - // similar. In the first one, we transform the columns and transpose - // the results. In the second one, we transform the rows. To achieve that, - // as the first pass results are transposed, we transpose the columns (that - // is the transposed rows) and transpose the results (so that it goes back - // in normal/row positions). - int pass; - // We need an intermediate buffer between passes. - DECLARE_ALIGNED(16, int16_t, intermediate[256]); - const int16_t *in = input; - int16_t *out0 = intermediate; - tran_low_t *out1 = output; - // Constants - // When we use them, in one case, they are all the same. In all others - // it's a pair of them that we need to repeat four times. This is done - // by constructing the 32 bit constant corresponding to that pair. - const __m128i k__cospi_p16_p16 = _mm_set1_epi16((int16_t)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_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); - const __m128i kOne = _mm_set1_epi16(1); - // Do the two transform/transpose passes - for (pass = 0; pass < 2; ++pass) { - // We process eight columns (transposed rows in second pass) at a time. - int column_start; -#if DCT_HIGH_BIT_DEPTH - int overflow; -#endif - for (column_start = 0; column_start < 16; column_start += 8) { - __m128i in00, in01, in02, in03, in04, in05, in06, in07; - __m128i in08, in09, in10, in11, in12, in13, in14, in15; - __m128i input0, input1, input2, input3, input4, input5, input6, input7; - __m128i step1_0, step1_1, step1_2, step1_3; - __m128i step1_4, step1_5, step1_6, step1_7; - __m128i step2_1, step2_2, step2_3, step2_4, step2_5, step2_6; - __m128i step3_0, step3_1, step3_2, step3_3; - __m128i step3_4, step3_5, step3_6, step3_7; - __m128i res00, res01, res02, res03, res04, res05, res06, res07; - __m128i res08, res09, res10, res11, res12, res13, res14, res15; - // Load and pre-condition input. - if (0 == pass) { - in00 = _mm_load_si128((const __m128i *)(in + 0 * stride)); - in01 = _mm_load_si128((const __m128i *)(in + 1 * stride)); - in02 = _mm_load_si128((const __m128i *)(in + 2 * stride)); - in03 = _mm_load_si128((const __m128i *)(in + 3 * stride)); - in04 = _mm_load_si128((const __m128i *)(in + 4 * stride)); - in05 = _mm_load_si128((const __m128i *)(in + 5 * stride)); - in06 = _mm_load_si128((const __m128i *)(in + 6 * stride)); - in07 = _mm_load_si128((const __m128i *)(in + 7 * stride)); - in08 = _mm_load_si128((const __m128i *)(in + 8 * stride)); - in09 = _mm_load_si128((const __m128i *)(in + 9 * stride)); - in10 = _mm_load_si128((const __m128i *)(in + 10 * stride)); - in11 = _mm_load_si128((const __m128i *)(in + 11 * stride)); - in12 = _mm_load_si128((const __m128i *)(in + 12 * stride)); - in13 = _mm_load_si128((const __m128i *)(in + 13 * stride)); - in14 = _mm_load_si128((const __m128i *)(in + 14 * stride)); - in15 = _mm_load_si128((const __m128i *)(in + 15 * stride)); - // x = x << 2 - in00 = _mm_slli_epi16(in00, 2); - in01 = _mm_slli_epi16(in01, 2); - in02 = _mm_slli_epi16(in02, 2); - in03 = _mm_slli_epi16(in03, 2); - in04 = _mm_slli_epi16(in04, 2); - in05 = _mm_slli_epi16(in05, 2); - in06 = _mm_slli_epi16(in06, 2); - in07 = _mm_slli_epi16(in07, 2); - in08 = _mm_slli_epi16(in08, 2); - in09 = _mm_slli_epi16(in09, 2); - in10 = _mm_slli_epi16(in10, 2); - in11 = _mm_slli_epi16(in11, 2); - in12 = _mm_slli_epi16(in12, 2); - in13 = _mm_slli_epi16(in13, 2); - in14 = _mm_slli_epi16(in14, 2); - in15 = _mm_slli_epi16(in15, 2); - } else { - in00 = _mm_load_si128((const __m128i *)(in + 0 * 16)); - in01 = _mm_load_si128((const __m128i *)(in + 1 * 16)); - in02 = _mm_load_si128((const __m128i *)(in + 2 * 16)); - in03 = _mm_load_si128((const __m128i *)(in + 3 * 16)); - in04 = _mm_load_si128((const __m128i *)(in + 4 * 16)); - in05 = _mm_load_si128((const __m128i *)(in + 5 * 16)); - in06 = _mm_load_si128((const __m128i *)(in + 6 * 16)); - in07 = _mm_load_si128((const __m128i *)(in + 7 * 16)); - in08 = _mm_load_si128((const __m128i *)(in + 8 * 16)); - in09 = _mm_load_si128((const __m128i *)(in + 9 * 16)); - in10 = _mm_load_si128((const __m128i *)(in + 10 * 16)); - in11 = _mm_load_si128((const __m128i *)(in + 11 * 16)); - in12 = _mm_load_si128((const __m128i *)(in + 12 * 16)); - in13 = _mm_load_si128((const __m128i *)(in + 13 * 16)); - in14 = _mm_load_si128((const __m128i *)(in + 14 * 16)); - in15 = _mm_load_si128((const __m128i *)(in + 15 * 16)); - // x = (x + 1) >> 2 - in00 = _mm_add_epi16(in00, kOne); - in01 = _mm_add_epi16(in01, kOne); - in02 = _mm_add_epi16(in02, kOne); - in03 = _mm_add_epi16(in03, kOne); - in04 = _mm_add_epi16(in04, kOne); - in05 = _mm_add_epi16(in05, kOne); - in06 = _mm_add_epi16(in06, kOne); - in07 = _mm_add_epi16(in07, kOne); - in08 = _mm_add_epi16(in08, kOne); - in09 = _mm_add_epi16(in09, kOne); - in10 = _mm_add_epi16(in10, kOne); - in11 = _mm_add_epi16(in11, kOne); - in12 = _mm_add_epi16(in12, kOne); - in13 = _mm_add_epi16(in13, kOne); - in14 = _mm_add_epi16(in14, kOne); - in15 = _mm_add_epi16(in15, kOne); - in00 = _mm_srai_epi16(in00, 2); - in01 = _mm_srai_epi16(in01, 2); - in02 = _mm_srai_epi16(in02, 2); - in03 = _mm_srai_epi16(in03, 2); - in04 = _mm_srai_epi16(in04, 2); - in05 = _mm_srai_epi16(in05, 2); - in06 = _mm_srai_epi16(in06, 2); - in07 = _mm_srai_epi16(in07, 2); - in08 = _mm_srai_epi16(in08, 2); - in09 = _mm_srai_epi16(in09, 2); - in10 = _mm_srai_epi16(in10, 2); - in11 = _mm_srai_epi16(in11, 2); - in12 = _mm_srai_epi16(in12, 2); - in13 = _mm_srai_epi16(in13, 2); - in14 = _mm_srai_epi16(in14, 2); - in15 = _mm_srai_epi16(in15, 2); - } - in += 8; - // Calculate input for the first 8 results. - { - input0 = ADD_EPI16(in00, in15); - input1 = ADD_EPI16(in01, in14); - input2 = ADD_EPI16(in02, in13); - input3 = ADD_EPI16(in03, in12); - input4 = ADD_EPI16(in04, in11); - input5 = ADD_EPI16(in05, in10); - input6 = ADD_EPI16(in06, in09); - input7 = ADD_EPI16(in07, in08); -#if DCT_HIGH_BIT_DEPTH - overflow = check_epi16_overflow_x8(&input0, &input1, &input2, &input3, - &input4, &input5, &input6, &input7); - if (overflow) { - aom_highbd_fdct16x16_c(input, output, stride); - return; - } -#endif // DCT_HIGH_BIT_DEPTH - } - // Calculate input for the next 8 results. - { - step1_0 = SUB_EPI16(in07, in08); - step1_1 = SUB_EPI16(in06, in09); - step1_2 = SUB_EPI16(in05, in10); - step1_3 = SUB_EPI16(in04, in11); - step1_4 = SUB_EPI16(in03, in12); - step1_5 = SUB_EPI16(in02, in13); - step1_6 = SUB_EPI16(in01, in14); - step1_7 = SUB_EPI16(in00, in15); -#if DCT_HIGH_BIT_DEPTH - overflow = - check_epi16_overflow_x8(&step1_0, &step1_1, &step1_2, &step1_3, - &step1_4, &step1_5, &step1_6, &step1_7); - if (overflow) { - aom_highbd_fdct16x16_c(input, output, stride); - return; - } -#endif // DCT_HIGH_BIT_DEPTH - } - // Work on the first eight values; fdct8(input, even_results); - { - // Add/subtract - const __m128i q0 = ADD_EPI16(input0, input7); - const __m128i q1 = ADD_EPI16(input1, input6); - const __m128i q2 = ADD_EPI16(input2, input5); - const __m128i q3 = ADD_EPI16(input3, input4); - const __m128i q4 = SUB_EPI16(input3, input4); - const __m128i q5 = SUB_EPI16(input2, input5); - const __m128i q6 = SUB_EPI16(input1, input6); - const __m128i q7 = SUB_EPI16(input0, input7); -#if DCT_HIGH_BIT_DEPTH - overflow = - check_epi16_overflow_x8(&q0, &q1, &q2, &q3, &q4, &q5, &q6, &q7); - if (overflow) { - aom_highbd_fdct16x16_c(input, output, stride); - return; - } -#endif // DCT_HIGH_BIT_DEPTH - // Work on first four results - { - // Add/subtract - const __m128i r0 = ADD_EPI16(q0, q3); - const __m128i r1 = ADD_EPI16(q1, q2); - const __m128i r2 = SUB_EPI16(q1, q2); - const __m128i r3 = SUB_EPI16(q0, q3); -#if DCT_HIGH_BIT_DEPTH - overflow = check_epi16_overflow_x4(&r0, &r1, &r2, &r3); - if (overflow) { - aom_highbd_fdct16x16_c(input, output, stride); - return; - } -#endif // DCT_HIGH_BIT_DEPTH - // Interleave to do the multiply by constants which gets us - // into 32 bits. - { - const __m128i t0 = _mm_unpacklo_epi16(r0, r1); - const __m128i t1 = _mm_unpackhi_epi16(r0, r1); - const __m128i t2 = _mm_unpacklo_epi16(r2, r3); - const __m128i t3 = _mm_unpackhi_epi16(r2, r3); - res00 = mult_round_shift(&t0, &t1, &k__cospi_p16_p16, - &k__DCT_CONST_ROUNDING, DCT_CONST_BITS); - res08 = mult_round_shift(&t0, &t1, &k__cospi_p16_m16, - &k__DCT_CONST_ROUNDING, DCT_CONST_BITS); - res04 = mult_round_shift(&t2, &t3, &k__cospi_p24_p08, - &k__DCT_CONST_ROUNDING, DCT_CONST_BITS); - res12 = mult_round_shift(&t2, &t3, &k__cospi_m08_p24, - &k__DCT_CONST_ROUNDING, DCT_CONST_BITS); -#if DCT_HIGH_BIT_DEPTH - overflow = check_epi16_overflow_x4(&res00, &res08, &res04, &res12); - if (overflow) { - aom_highbd_fdct16x16_c(input, output, stride); - return; - } -#endif // DCT_HIGH_BIT_DEPTH - } - } - // Work on next four results - { - // Interleave to do the multiply by constants which gets us - // into 32 bits. - const __m128i d0 = _mm_unpacklo_epi16(q6, q5); - const __m128i d1 = _mm_unpackhi_epi16(q6, q5); - const __m128i r0 = - mult_round_shift(&d0, &d1, &k__cospi_p16_m16, - &k__DCT_CONST_ROUNDING, DCT_CONST_BITS); - const __m128i r1 = - mult_round_shift(&d0, &d1, &k__cospi_p16_p16, - &k__DCT_CONST_ROUNDING, DCT_CONST_BITS); -#if DCT_HIGH_BIT_DEPTH - overflow = check_epi16_overflow_x2(&r0, &r1); - if (overflow) { - aom_highbd_fdct16x16_c(input, output, stride); - return; - } -#endif // DCT_HIGH_BIT_DEPTH - { - // Add/subtract - const __m128i x0 = ADD_EPI16(q4, r0); - const __m128i x1 = SUB_EPI16(q4, r0); - const __m128i x2 = SUB_EPI16(q7, r1); - const __m128i x3 = ADD_EPI16(q7, r1); -#if DCT_HIGH_BIT_DEPTH - overflow = check_epi16_overflow_x4(&x0, &x1, &x2, &x3); - if (overflow) { - aom_highbd_fdct16x16_c(input, output, stride); - return; - } -#endif // DCT_HIGH_BIT_DEPTH - // Interleave to do the multiply by constants which gets us - // into 32 bits. - { - const __m128i t0 = _mm_unpacklo_epi16(x0, x3); - const __m128i t1 = _mm_unpackhi_epi16(x0, x3); - const __m128i t2 = _mm_unpacklo_epi16(x1, x2); - const __m128i t3 = _mm_unpackhi_epi16(x1, x2); - res02 = mult_round_shift(&t0, &t1, &k__cospi_p28_p04, - &k__DCT_CONST_ROUNDING, DCT_CONST_BITS); - res14 = mult_round_shift(&t0, &t1, &k__cospi_m04_p28, - &k__DCT_CONST_ROUNDING, DCT_CONST_BITS); - res10 = mult_round_shift(&t2, &t3, &k__cospi_p12_p20, - &k__DCT_CONST_ROUNDING, DCT_CONST_BITS); - res06 = mult_round_shift(&t2, &t3, &k__cospi_m20_p12, - &k__DCT_CONST_ROUNDING, DCT_CONST_BITS); -#if DCT_HIGH_BIT_DEPTH - overflow = - check_epi16_overflow_x4(&res02, &res14, &res10, &res06); - if (overflow) { - aom_highbd_fdct16x16_c(input, output, stride); - return; - } -#endif // DCT_HIGH_BIT_DEPTH - } - } - } - } - // Work on the next eight values; step1 -> odd_results - { - // step 2 - { - const __m128i t0 = _mm_unpacklo_epi16(step1_5, step1_2); - const __m128i t1 = _mm_unpackhi_epi16(step1_5, step1_2); - const __m128i t2 = _mm_unpacklo_epi16(step1_4, step1_3); - const __m128i t3 = _mm_unpackhi_epi16(step1_4, step1_3); - step2_2 = mult_round_shift(&t0, &t1, &k__cospi_p16_m16, - &k__DCT_CONST_ROUNDING, DCT_CONST_BITS); - step2_3 = mult_round_shift(&t2, &t3, &k__cospi_p16_m16, - &k__DCT_CONST_ROUNDING, DCT_CONST_BITS); - step2_5 = mult_round_shift(&t0, &t1, &k__cospi_p16_p16, - &k__DCT_CONST_ROUNDING, DCT_CONST_BITS); - step2_4 = mult_round_shift(&t2, &t3, &k__cospi_p16_p16, - &k__DCT_CONST_ROUNDING, DCT_CONST_BITS); -#if DCT_HIGH_BIT_DEPTH - overflow = - check_epi16_overflow_x4(&step2_2, &step2_3, &step2_5, &step2_4); - if (overflow) { - aom_highbd_fdct16x16_c(input, output, stride); - return; - } -#endif // DCT_HIGH_BIT_DEPTH - } - // step 3 - { - step3_0 = ADD_EPI16(step1_0, step2_3); - step3_1 = ADD_EPI16(step1_1, step2_2); - step3_2 = SUB_EPI16(step1_1, step2_2); - step3_3 = SUB_EPI16(step1_0, step2_3); - step3_4 = SUB_EPI16(step1_7, step2_4); - step3_5 = SUB_EPI16(step1_6, step2_5); - step3_6 = ADD_EPI16(step1_6, step2_5); - step3_7 = ADD_EPI16(step1_7, step2_4); -#if DCT_HIGH_BIT_DEPTH - overflow = - check_epi16_overflow_x8(&step3_0, &step3_1, &step3_2, &step3_3, - &step3_4, &step3_5, &step3_6, &step3_7); - if (overflow) { - aom_highbd_fdct16x16_c(input, output, stride); - return; - } -#endif // DCT_HIGH_BIT_DEPTH - } - // step 4 - { - const __m128i t0 = _mm_unpacklo_epi16(step3_1, step3_6); - const __m128i t1 = _mm_unpackhi_epi16(step3_1, step3_6); - const __m128i t2 = _mm_unpacklo_epi16(step3_2, step3_5); - const __m128i t3 = _mm_unpackhi_epi16(step3_2, step3_5); - step2_1 = mult_round_shift(&t0, &t1, &k__cospi_m08_p24, - &k__DCT_CONST_ROUNDING, DCT_CONST_BITS); - step2_2 = mult_round_shift(&t2, &t3, &k__cospi_p24_p08, - &k__DCT_CONST_ROUNDING, DCT_CONST_BITS); - step2_6 = mult_round_shift(&t0, &t1, &k__cospi_p24_p08, - &k__DCT_CONST_ROUNDING, DCT_CONST_BITS); - step2_5 = mult_round_shift(&t2, &t3, &k__cospi_p08_m24, - &k__DCT_CONST_ROUNDING, DCT_CONST_BITS); -#if DCT_HIGH_BIT_DEPTH - overflow = - check_epi16_overflow_x4(&step2_1, &step2_2, &step2_6, &step2_5); - if (overflow) { - aom_highbd_fdct16x16_c(input, output, stride); - return; - } -#endif // DCT_HIGH_BIT_DEPTH - } - // step 5 - { - step1_0 = ADD_EPI16(step3_0, step2_1); - step1_1 = SUB_EPI16(step3_0, step2_1); - step1_2 = ADD_EPI16(step3_3, step2_2); - step1_3 = SUB_EPI16(step3_3, step2_2); - step1_4 = SUB_EPI16(step3_4, step2_5); - step1_5 = ADD_EPI16(step3_4, step2_5); - step1_6 = SUB_EPI16(step3_7, step2_6); - step1_7 = ADD_EPI16(step3_7, step2_6); -#if DCT_HIGH_BIT_DEPTH - overflow = - check_epi16_overflow_x8(&step1_0, &step1_1, &step1_2, &step1_3, - &step1_4, &step1_5, &step1_6, &step1_7); - if (overflow) { - aom_highbd_fdct16x16_c(input, output, stride); - return; - } -#endif // DCT_HIGH_BIT_DEPTH - } - // step 6 - { - const __m128i t0 = _mm_unpacklo_epi16(step1_0, step1_7); - const __m128i t1 = _mm_unpackhi_epi16(step1_0, step1_7); - const __m128i t2 = _mm_unpacklo_epi16(step1_1, step1_6); - const __m128i t3 = _mm_unpackhi_epi16(step1_1, step1_6); - res01 = mult_round_shift(&t0, &t1, &k__cospi_p30_p02, - &k__DCT_CONST_ROUNDING, DCT_CONST_BITS); - res09 = mult_round_shift(&t2, &t3, &k__cospi_p14_p18, - &k__DCT_CONST_ROUNDING, DCT_CONST_BITS); - res15 = mult_round_shift(&t0, &t1, &k__cospi_m02_p30, - &k__DCT_CONST_ROUNDING, DCT_CONST_BITS); - res07 = mult_round_shift(&t2, &t3, &k__cospi_m18_p14, - &k__DCT_CONST_ROUNDING, DCT_CONST_BITS); -#if DCT_HIGH_BIT_DEPTH - overflow = check_epi16_overflow_x4(&res01, &res09, &res15, &res07); - if (overflow) { - aom_highbd_fdct16x16_c(input, output, stride); - return; - } -#endif // DCT_HIGH_BIT_DEPTH - } - { - const __m128i t0 = _mm_unpacklo_epi16(step1_2, step1_5); - const __m128i t1 = _mm_unpackhi_epi16(step1_2, step1_5); - const __m128i t2 = _mm_unpacklo_epi16(step1_3, step1_4); - const __m128i t3 = _mm_unpackhi_epi16(step1_3, step1_4); - res05 = mult_round_shift(&t0, &t1, &k__cospi_p22_p10, - &k__DCT_CONST_ROUNDING, DCT_CONST_BITS); - res13 = mult_round_shift(&t2, &t3, &k__cospi_p06_p26, - &k__DCT_CONST_ROUNDING, DCT_CONST_BITS); - res11 = mult_round_shift(&t0, &t1, &k__cospi_m10_p22, - &k__DCT_CONST_ROUNDING, DCT_CONST_BITS); - res03 = mult_round_shift(&t2, &t3, &k__cospi_m26_p06, - &k__DCT_CONST_ROUNDING, DCT_CONST_BITS); -#if DCT_HIGH_BIT_DEPTH - overflow = check_epi16_overflow_x4(&res05, &res13, &res11, &res03); - if (overflow) { - aom_highbd_fdct16x16_c(input, output, stride); - return; - } -#endif // DCT_HIGH_BIT_DEPTH - } - } - // Transpose the results, do it as two 8x8 transposes. - transpose_and_output8x8(&res00, &res01, &res02, &res03, &res04, &res05, - &res06, &res07, pass, out0, out1); - transpose_and_output8x8(&res08, &res09, &res10, &res11, &res12, &res13, - &res14, &res15, pass, out0 + 8, out1 + 8); - if (pass == 0) { - out0 += 8 * 16; - } else { - out1 += 8 * 16; - } - } - // Setup in/out for next pass. - in = intermediate; - } -} - #undef ADD_EPI16 #undef SUB_EPI16 |