| /****************************************************************************** |
| * |
| * Copyright (C) 2015 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at: |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| ***************************************************************************** |
| * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore |
| */ |
| /** |
| ******************************************************************************* |
| * @file |
| * ih264_iquant_itrans_recon_sse42.c |
| * |
| * @brief |
| * Contains function definitions for inverse quantization, inverse |
| * transform and reconstruction |
| * |
| * @author |
| * Mohit [100664] |
| * |
| * @par List of Functions: |
| * - ih264_iquant_itrans_recon_4x4_sse42() |
| * - ih264_iquant_itrans_recon_chroma_4x4_sse42() |
| * |
| * @remarks |
| * None |
| * |
| ******************************************************************************* |
| */ |
| /* User include files */ |
| #include "ih264_typedefs.h" |
| #include "ih264_defs.h" |
| #include "ih264_trans_macros.h" |
| #include "ih264_macros.h" |
| #include "ih264_platform_macros.h" |
| #include "ih264_trans_data.h" |
| #include "ih264_size_defs.h" |
| #include "ih264_structs.h" |
| #include "ih264_trans_quant_itrans_iquant.h" |
| #include <immintrin.h> |
| |
| /* |
| ******************************************************************************** |
| * |
| * @brief This function reconstructs a 4x4 sub block from quantized resiude and |
| * prediction buffer |
| * |
| * @par Description: |
| * The quantized residue is first inverse quantized, then inverse transformed. |
| * This inverse transformed content is added to the prediction buffer to recon- |
| * struct the end output |
| * |
| * @param[in] pi2_src |
| * quantized 4x4 block |
| * |
| * @param[in] pu1_pred |
| * prediction 4x4 block |
| * |
| * @param[out] pu1_out |
| * reconstructed 4x4 block |
| * |
| * @param[in] src_strd |
| * quantization buffer stride |
| * |
| * @param[in] pred_strd, |
| * Prediction buffer stride |
| * |
| * @param[in] out_strd |
| * recon buffer Stride |
| * |
| * @param[in] pu2_scaling_list |
| * pointer to scaling list |
| * |
| * @param[in] pu2_norm_adjust |
| * pointer to inverse scale matrix |
| * |
| * @param[in] u4_qp_div_6 |
| * Floor (qp/6) |
| * |
| * @param[in] pi4_tmp |
| * temporary buffer of size 1*16 |
| * |
| * @returns none |
| * |
| * @remarks none |
| * |
| ******************************************************************************* |
| */ |
| void ih264_iquant_itrans_recon_4x4_sse42(WORD16 *pi2_src, |
| UWORD8 *pu1_pred, |
| UWORD8 *pu1_out, |
| WORD32 pred_strd, |
| WORD32 out_strd, |
| const UWORD16 *pu2_iscal_mat, |
| const UWORD16 *pu2_weigh_mat, |
| UWORD32 u4_qp_div_6, |
| WORD16 *pi2_tmp, |
| WORD32 iq_start_idx, |
| WORD16 *pi2_dc_ld_addr) |
| { |
| UWORD32 *pu4_out = (UWORD32 *) pu1_out; |
| __m128i src_r0_r1, src_r2_r3; |
| __m128i src_r0, src_r1, src_r2, src_r3; |
| __m128i scalemat_r0_r1, scalemat_r2_r3; |
| __m128i pred_r0, pred_r1, pred_r2, pred_r3; |
| __m128i sign_reg, dequant_r0_r1, dequant_r2_r3; |
| __m128i zero_8x16b = _mm_setzero_si128(); // all bits reset to zero |
| __m128i temp0, temp1, temp2, temp3, temp4, temp5, temp6, temp7; |
| __m128i resq_r0, resq_r1, resq_r2, resq_r3; |
| __m128i add_rshift = _mm_set1_epi32((1 << (3 - u4_qp_div_6))); |
| __m128i value_32 = _mm_set1_epi32(32); |
| UNUSED (pi2_tmp); |
| |
| /*************************************************************/ |
| /* Dequantization of coefficients. Will be replaced by SIMD */ |
| /* operations on platform */ |
| /*************************************************************/ |
| src_r0_r1 = _mm_loadu_si128((__m128i *) (pi2_src)); //a00 a01 a02 a03 a10 a11 a12 a13 -- the source matrix 0th,1st row |
| src_r2_r3 = _mm_loadu_si128((__m128i *) (pi2_src + 8)); //a20 a21 a22 a23 a30 a31 a32 a33 -- the source matrix 2nd,3rd row |
| scalemat_r0_r1 = _mm_loadu_si128((__m128i *) (pu2_iscal_mat)); //b00 b01 b02 b03 b10 b11 b12 b13 -- the scaling matrix 0th,1st row |
| scalemat_r2_r3 = _mm_loadu_si128((__m128i *) (pu2_iscal_mat + 8)); //b20 b21 b22 b23 b30 b31 b32 b33 -- the scaling matrix 2nd,3rd row |
| dequant_r0_r1 = _mm_loadu_si128((__m128i *) (pu2_weigh_mat)); //q00 q01 q02 q03 q10 q11 q12 q13 -- all 16 bits |
| dequant_r2_r3 = _mm_loadu_si128((__m128i *) (pu2_weigh_mat + 8)); //q20 q21 q22 q23 q30 q31 q32 q33 -- all 16 bits |
| |
| temp0 = _mm_mullo_epi16(scalemat_r0_r1, dequant_r0_r1); //b00*q00 b01*q01 b02*q02 b03*q03 b10*q10 b11*q11 b12*q12 b13*q13 -- 16 bit result |
| temp1 = _mm_mullo_epi16(scalemat_r2_r3, dequant_r2_r3); //b00*q00 b01*q01 b02*q02 b03*q03 b10*q10 b11*q11 b12*q12 b13*q13 -- 16 bit result |
| |
| temp4 = _mm_unpacklo_epi16(temp0, zero_8x16b); // b00*q00 0 b01*q01 0 b02*q02 0 b03*q03 0 -- 16 bit long |
| temp5 = _mm_unpackhi_epi16(temp0, zero_8x16b); // b10*q10 0 b11*q11 0 b12*q12 0 b13*q13 0 -- 16 bit long |
| temp6 = _mm_unpacklo_epi16(temp1, zero_8x16b); // b00*q00 0 b01*q01 0 b02*q02 0 b03*q03 0 -- 16 bit long |
| temp7 = _mm_unpackhi_epi16(temp1, zero_8x16b); // b10*q10 0 b11*q11 0 b12*q12 0 b13*q13 0 -- 16 bit long |
| |
| src_r0 = _mm_unpacklo_epi16(src_r0_r1, zero_8x16b); // a00 0 a01 0 a02 0 a03 0 -- 16 bit long |
| src_r1 = _mm_unpackhi_epi16(src_r0_r1, zero_8x16b); // a10 0 a11 0 a12 0 a13 0 -- 16 bit long |
| src_r2 = _mm_unpacklo_epi16(src_r2_r3, zero_8x16b); // a20 0 a21 0 a22 0 a23 0 -- 16 bit long |
| src_r3 = _mm_unpackhi_epi16(src_r2_r3, zero_8x16b); // a30 0 a31 0 a32 0 a33 0 -- 16 bit long |
| |
| temp4 = _mm_madd_epi16(src_r0, temp4); //a00*b00*q00 a10*b10*q10 a20*b20*q20 a30*b30 q30 -- 32 bits long |
| temp5 = _mm_madd_epi16(src_r1, temp5); |
| temp6 = _mm_madd_epi16(src_r2, temp6); |
| temp7 = _mm_madd_epi16(src_r3, temp7); |
| |
| if (u4_qp_div_6 >= 4) { |
| resq_r0 = _mm_slli_epi32(temp4, u4_qp_div_6 - 4); |
| resq_r1 = _mm_slli_epi32(temp5, u4_qp_div_6 - 4); |
| resq_r2 = _mm_slli_epi32(temp6, u4_qp_div_6 - 4); |
| resq_r3 = _mm_slli_epi32(temp7, u4_qp_div_6 - 4); |
| } else { |
| temp4 = _mm_add_epi32(temp4, add_rshift); |
| temp5 = _mm_add_epi32(temp5, add_rshift); |
| temp6 = _mm_add_epi32(temp6, add_rshift); |
| temp7 = _mm_add_epi32(temp7, add_rshift); |
| resq_r0 = _mm_srai_epi32(temp4, 4 - u4_qp_div_6); |
| resq_r1 = _mm_srai_epi32(temp5, 4 - u4_qp_div_6); |
| resq_r2 = _mm_srai_epi32(temp6, 4 - u4_qp_div_6); |
| resq_r3 = _mm_srai_epi32(temp7, 4 - u4_qp_div_6); |
| } |
| |
| if (iq_start_idx == 1) |
| resq_r0 = _mm_insert_epi32(resq_r0,(WORD32)pi2_dc_ld_addr[0],0); |
| /* Perform Inverse transform */ |
| /*-------------------------------------------------------------*/ |
| /* IDCT [ Horizontal transformation ] */ |
| /*-------------------------------------------------------------*/ |
| // Matrix transpose |
| /* |
| * a0 a1 a2 a3 |
| * b0 b1 b2 b3 |
| * c0 c1 c2 c3 |
| * d0 d1 d2 d3 |
| */ |
| temp1 = _mm_unpacklo_epi32(resq_r0, resq_r1); //a0 b0 a1 b1 |
| temp3 = _mm_unpacklo_epi32(resq_r2, resq_r3); //c0 d0 c1 d1 |
| temp2 = _mm_unpackhi_epi32(resq_r0, resq_r1); //a2 b2 a3 b3 |
| temp4 = _mm_unpackhi_epi32(resq_r2, resq_r3); //c2 d2 c3 d3 |
| resq_r0 = _mm_unpacklo_epi64(temp1, temp3); //a0 b0 c0 d0 |
| resq_r1 = _mm_unpackhi_epi64(temp1, temp3); //a1 b1 c1 d1 |
| resq_r2 = _mm_unpacklo_epi64(temp2, temp4); //a2 b2 c2 d2 |
| resq_r3 = _mm_unpackhi_epi64(temp2, temp4); //a3 b3 c3 d3 |
| //Transform starts -- horizontal transform |
| /*------------------------------------------------------------------*/ |
| /* z0 = w0 + w2 */ |
| temp0 = _mm_add_epi32(resq_r0, resq_r2); |
| /* z1 = w0 - w2 */ |
| temp1 = _mm_sub_epi32(resq_r0, resq_r2); |
| /* z2 = (w1 >> 1) - w3 */ |
| temp2 = _mm_srai_epi32(resq_r1, 1); //(w1>>1) |
| temp2 = _mm_sub_epi32(temp2, resq_r3); //(w1>>1) - w3 |
| /* z3 = w1 + (w3 >> 1) */ |
| temp3 = _mm_srai_epi32(resq_r3, 1); //(w3>>1) + w1 |
| temp3 = _mm_add_epi32(temp3, resq_r1); |
| /*----------------------------------------------------------*/ |
| /* x0 = z0 + z3 */ |
| resq_r0 = _mm_add_epi32(temp0, temp3); |
| /* x1 = z1 + z2 */ |
| resq_r1 = _mm_add_epi32(temp1, temp2); |
| /* x2 = z1 - z2 */ |
| resq_r2 = _mm_sub_epi32(temp1, temp2); |
| /* x3 = z0 - z3 */ |
| resq_r3 = _mm_sub_epi32(temp0, temp3); |
| // Matrix transpose |
| /* |
| * a0 b0 c0 d0 |
| * a1 b1 c1 d1 |
| * a2 b2 c2 d2 |
| * a3 b3 c3 d3 |
| */ |
| temp1 = _mm_unpacklo_epi32(resq_r0, resq_r1); //a0 a1 b0 b1 |
| temp3 = _mm_unpacklo_epi32(resq_r2, resq_r3); //a2 a3 b2 b3 |
| temp2 = _mm_unpackhi_epi32(resq_r0, resq_r1); //c0 c1 d0 d1 |
| temp4 = _mm_unpackhi_epi32(resq_r2, resq_r3); //c2 c3 d2 d3 |
| resq_r0 = _mm_unpacklo_epi64(temp1, temp3); //a0 a1 a2 a3 |
| resq_r1 = _mm_unpackhi_epi64(temp1, temp3); //b0 b1 b2 b3 |
| resq_r2 = _mm_unpacklo_epi64(temp2, temp4); //c0 c1 c2 c3 |
| resq_r3 = _mm_unpackhi_epi64(temp2, temp4); //d0 d1 d2 d3 |
| //Transform ends -- horizontal transform |
| |
| //Load pred buffer |
| pred_r0 = _mm_loadl_epi64((__m128i *) (&pu1_pred[0])); //p00 p01 p02 p03 0 0 0 0 0 0 0 0 -- all 8 bits |
| pred_r1 = _mm_loadl_epi64((__m128i *) (&pu1_pred[pred_strd])); //p10 p11 p12 p13 0 0 0 0 0 0 0 0 -- all 8 bits |
| pred_r2 = _mm_loadl_epi64((__m128i *) (&pu1_pred[2 * pred_strd])); //p20 p21 p22 p23 0 0 0 0 0 0 0 0 -- all 8 bits |
| pred_r3 = _mm_loadl_epi64((__m128i *) (&pu1_pred[3 * pred_strd])); //p30 p31 p32 p33 0 0 0 0 0 0 0 0 -- all 8 bits |
| |
| pred_r0 = _mm_cvtepu8_epi32(pred_r0); //p00 p01 p02 p03 -- all 32 bits |
| pred_r1 = _mm_cvtepu8_epi32(pred_r1); //p10 p11 p12 p13 -- all 32 bits |
| pred_r2 = _mm_cvtepu8_epi32(pred_r2); //p20 p21 p22 p23 -- all 32 bits |
| pred_r3 = _mm_cvtepu8_epi32(pred_r3); //p30 p31 p32 p33 -- all 32 bits |
| |
| /*--------------------------------------------------------------*/ |
| /* IDCT [ Vertical transformation] and Xij = (xij + 32)>>6 */ |
| /* */ |
| /* Add the prediction and store it back to same buffer */ |
| /*--------------------------------------------------------------*/ |
| /* z0j = y0j + y2j */ |
| temp0 = _mm_add_epi32(resq_r0, resq_r2); |
| /* z1j = y0j - y2j */ |
| temp1 = _mm_sub_epi32(resq_r0, resq_r2); |
| /* z2j = (y1j>>1) - y3j */ |
| temp2 = _mm_srai_epi32(resq_r1, 1); //(y1j>>1) |
| temp2 = _mm_sub_epi32(temp2, resq_r3); |
| /* z3j = y1j + (y3j>>1) */ |
| temp3 = _mm_srai_epi32(resq_r3, 1); //(y3j>>1) |
| temp3 = _mm_add_epi32(temp3, resq_r1); |
| |
| /* x0j = z0j + z3j */ |
| temp4 = _mm_add_epi32(temp0, temp3); |
| temp4 = _mm_add_epi32(temp4, value_32); |
| temp4 = _mm_srai_epi32(temp4, 6); |
| temp4 = _mm_add_epi32(temp4, pred_r0); |
| /* x1j = z1j + z2j */ |
| temp5 = _mm_add_epi32(temp1, temp2); |
| temp5 = _mm_add_epi32(temp5, value_32); |
| temp5 = _mm_srai_epi32(temp5, 6); |
| temp5 = _mm_add_epi32(temp5, pred_r1); |
| /* x2j = z1j - z2j */ |
| temp6 = _mm_sub_epi32(temp1, temp2); |
| temp6 = _mm_add_epi32(temp6, value_32); |
| temp6 = _mm_srai_epi32(temp6, 6); |
| temp6 = _mm_add_epi32(temp6, pred_r2); |
| /* x3j = z0j - z3j */ |
| temp7 = _mm_sub_epi32(temp0, temp3); |
| temp7 = _mm_add_epi32(temp7, value_32); |
| temp7 = _mm_srai_epi32(temp7, 6); |
| temp7 = _mm_add_epi32(temp7, pred_r3); |
| |
| // 32-bit to 16-bit conversion |
| temp0 = _mm_packs_epi32(temp4, temp5); |
| temp1 = _mm_packs_epi32(temp6, temp7); |
| /*------------------------------------------------------------------*/ |
| //Clipping the results to 8 bits |
| sign_reg = _mm_cmpgt_epi16(temp0, zero_8x16b); // sign check |
| temp0 = _mm_and_si128(temp0, sign_reg); |
| sign_reg = _mm_cmpgt_epi16(temp1, zero_8x16b); |
| temp1 = _mm_and_si128(temp1, sign_reg); |
| |
| resq_r0 = _mm_packus_epi16(temp0, temp1); |
| resq_r1 = _mm_srli_si128(resq_r0, 4); |
| resq_r2 = _mm_srli_si128(resq_r1, 4); |
| resq_r3 = _mm_srli_si128(resq_r2, 4); |
| |
| *pu4_out = _mm_cvtsi128_si32(resq_r0); |
| pu1_out += out_strd; |
| pu4_out = (UWORD32 *) (pu1_out); |
| *(pu4_out) = _mm_cvtsi128_si32(resq_r1); |
| pu1_out += out_strd; |
| pu4_out = (UWORD32 *) (pu1_out); |
| *(pu4_out) = _mm_cvtsi128_si32(resq_r2); |
| pu1_out += out_strd; |
| pu4_out = (UWORD32 *) (pu1_out); |
| *(pu4_out) = _mm_cvtsi128_si32(resq_r3); |
| } |
| |
| /* |
| ******************************************************************************** |
| * |
| * @brief This function reconstructs a 4x4 sub block from quantized chroma resiude and |
| * prediction buffer |
| * |
| * @par Description: |
| * The quantized residue is first inverse quantized, then inverse transformed. |
| * This inverse transformed content is added to the prediction buffer to recon- |
| * struct the end output |
| * |
| * @param[in] pi2_src |
| * quantized 4x4 block |
| * |
| * @param[in] pu1_pred |
| * prediction 4x4 block |
| * |
| * @param[out] pu1_out |
| * reconstructed 4x4 block |
| * |
| * @param[in] src_strd |
| * quantization buffer stride |
| * |
| * @param[in] pred_strd, |
| * Prediction buffer stride |
| * |
| * @param[in] out_strd |
| * recon buffer Stride |
| * |
| * @param[in] pu2_scaling_list |
| * pointer to scaling list |
| * |
| * @param[in] pu2_norm_adjust |
| * pointer to inverse scale matrix |
| * |
| * @param[in] u4_qp_div_6 |
| * Floor (qp/6) |
| * |
| * @param[in] pi4_tmp |
| * temporary buffer of size 1*16 |
| * |
| * @returns none |
| * |
| * @remarks none |
| * |
| ******************************************************************************* |
| */ |
| void ih264_iquant_itrans_recon_chroma_4x4_sse42(WORD16 *pi2_src, |
| UWORD8 *pu1_pred, |
| UWORD8 *pu1_out, |
| WORD32 pred_strd, |
| WORD32 out_strd, |
| const UWORD16 *pu2_iscal_mat, |
| const UWORD16 *pu2_weigh_mat, |
| UWORD32 u4_qp_div_6, |
| WORD16 *pi2_tmp, |
| WORD16 *pi2_dc_ld_addr) |
| { |
| __m128i src_r0_r1, src_r2_r3; |
| __m128i src_r0, src_r1, src_r2, src_r3; |
| __m128i scalemat_r0_r1, scalemat_r2_r3; |
| __m128i pred_r0, pred_r1, pred_r2, pred_r3; |
| __m128i sign_reg, dequant_r0_r1, dequant_r2_r3; |
| __m128i zero_8x16b = _mm_setzero_si128(); // all bits reset to zero |
| __m128i temp0, temp1, temp2, temp3, temp4, temp5, temp6, temp7; |
| __m128i resq_r0, resq_r1, resq_r2, resq_r3; |
| __m128i add_rshift = _mm_set1_epi32((1 << (3 - u4_qp_div_6))); |
| __m128i value_32 = _mm_set1_epi32(32); |
| __m128i chroma_mask = _mm_set1_epi16 (0xFF); |
| __m128i out_r0, out_r1, out_r2, out_r3; |
| UNUSED (pi2_tmp); |
| |
| /*************************************************************/ |
| /* Dequantization of coefficients. Will be replaced by SIMD */ |
| /* operations on platform */ |
| /*************************************************************/ |
| src_r0_r1 = _mm_loadu_si128((__m128i *) (pi2_src)); //a00 a01 a02 a03 a10 a11 a12 a13 -- the source matrix 0th,1st row |
| src_r2_r3 = _mm_loadu_si128((__m128i *) (pi2_src + 8)); //a20 a21 a22 a23 a30 a31 a32 a33 -- the source matrix 2nd,3rd row |
| scalemat_r0_r1 = _mm_loadu_si128((__m128i *) (pu2_iscal_mat)); //b00 b01 b02 b03 b10 b11 b12 b13 -- the scaling matrix 0th,1st row |
| scalemat_r2_r3 = _mm_loadu_si128((__m128i *) (pu2_iscal_mat + 8)); //b20 b21 b22 b23 b30 b31 b32 b33 -- the scaling matrix 2nd,3rd row |
| dequant_r0_r1 = _mm_loadu_si128((__m128i *) (pu2_weigh_mat)); //q00 q01 q02 q03 q10 q11 q12 q13 -- all 16 bits |
| dequant_r2_r3 = _mm_loadu_si128((__m128i *) (pu2_weigh_mat + 8)); //q20 q21 q22 q23 q30 q31 q32 q33 -- all 16 bits |
| |
| temp0 = _mm_mullo_epi16(scalemat_r0_r1, dequant_r0_r1); //b00*q00 b01*q01 b02*q02 b03*q03 b10*q10 b11*q11 b12*q12 b13*q13 -- 16 bit result |
| temp1 = _mm_mullo_epi16(scalemat_r2_r3, dequant_r2_r3); //b00*q00 b01*q01 b02*q02 b03*q03 b10*q10 b11*q11 b12*q12 b13*q13 -- 16 bit result |
| |
| temp4 = _mm_unpacklo_epi16(temp0, zero_8x16b); // b00*q00 0 b01*q01 0 b02*q02 0 b03*q03 0 -- 16 bit long |
| temp5 = _mm_unpackhi_epi16(temp0, zero_8x16b); // b10*q10 0 b11*q11 0 b12*q12 0 b13*q13 0 -- 16 bit long |
| temp6 = _mm_unpacklo_epi16(temp1, zero_8x16b); // b00*q00 0 b01*q01 0 b02*q02 0 b03*q03 0 -- 16 bit long |
| temp7 = _mm_unpackhi_epi16(temp1, zero_8x16b); // b10*q10 0 b11*q11 0 b12*q12 0 b13*q13 0 -- 16 bit long |
| |
| src_r0 = _mm_unpacklo_epi16(src_r0_r1, zero_8x16b); // a00 0 a01 0 a02 0 a03 0 -- 16 bit long |
| src_r1 = _mm_unpackhi_epi16(src_r0_r1, zero_8x16b); // a10 0 a11 0 a12 0 a13 0 -- 16 bit long |
| src_r2 = _mm_unpacklo_epi16(src_r2_r3, zero_8x16b); // a20 0 a21 0 a22 0 a23 0 -- 16 bit long |
| src_r3 = _mm_unpackhi_epi16(src_r2_r3, zero_8x16b); // a30 0 a31 0 a32 0 a33 0 -- 16 bit long |
| |
| temp4 = _mm_madd_epi16(src_r0, temp4); //a00*b00*q00 a10*b10*q10 a20*b20*q20 a30*b30 q30 -- 32 bits long |
| temp5 = _mm_madd_epi16(src_r1, temp5); |
| temp6 = _mm_madd_epi16(src_r2, temp6); |
| temp7 = _mm_madd_epi16(src_r3, temp7); |
| |
| if (u4_qp_div_6 >= 4) { |
| resq_r0 = _mm_slli_epi32(temp4, u4_qp_div_6 - 4); |
| resq_r1 = _mm_slli_epi32(temp5, u4_qp_div_6 - 4); |
| resq_r2 = _mm_slli_epi32(temp6, u4_qp_div_6 - 4); |
| resq_r3 = _mm_slli_epi32(temp7, u4_qp_div_6 - 4); |
| } else { |
| temp4 = _mm_add_epi32(temp4, add_rshift); |
| temp5 = _mm_add_epi32(temp5, add_rshift); |
| temp6 = _mm_add_epi32(temp6, add_rshift); |
| temp7 = _mm_add_epi32(temp7, add_rshift); |
| resq_r0 = _mm_srai_epi32(temp4, 4 - u4_qp_div_6); |
| resq_r1 = _mm_srai_epi32(temp5, 4 - u4_qp_div_6); |
| resq_r2 = _mm_srai_epi32(temp6, 4 - u4_qp_div_6); |
| resq_r3 = _mm_srai_epi32(temp7, 4 - u4_qp_div_6); |
| } |
| |
| resq_r0 = _mm_insert_epi32(resq_r0,(WORD32)pi2_dc_ld_addr[0],0); |
| /* Perform Inverse transform */ |
| /*-------------------------------------------------------------*/ |
| /* IDCT [ Horizontal transformation ] */ |
| /*-------------------------------------------------------------*/ |
| // Matrix transpose |
| /* |
| * a0 a1 a2 a3 |
| * b0 b1 b2 b3 |
| * c0 c1 c2 c3 |
| * d0 d1 d2 d3 |
| */ |
| temp1 = _mm_unpacklo_epi32(resq_r0, resq_r1); //a0 b0 a1 b1 |
| temp3 = _mm_unpacklo_epi32(resq_r2, resq_r3); //c0 d0 c1 d1 |
| temp2 = _mm_unpackhi_epi32(resq_r0, resq_r1); //a2 b2 a3 b3 |
| temp4 = _mm_unpackhi_epi32(resq_r2, resq_r3); //c2 d2 c3 d3 |
| resq_r0 = _mm_unpacklo_epi64(temp1, temp3); //a0 b0 c0 d0 |
| resq_r1 = _mm_unpackhi_epi64(temp1, temp3); //a1 b1 c1 d1 |
| resq_r2 = _mm_unpacklo_epi64(temp2, temp4); //a2 b2 c2 d2 |
| resq_r3 = _mm_unpackhi_epi64(temp2, temp4); //a3 b3 c3 d3 |
| //Transform starts -- horizontal transform |
| /*------------------------------------------------------------------*/ |
| /* z0 = w0 + w2 */ |
| temp0 = _mm_add_epi32(resq_r0, resq_r2); |
| /* z1 = w0 - w2 */ |
| temp1 = _mm_sub_epi32(resq_r0, resq_r2); |
| /* z2 = (w1 >> 1) - w3 */ |
| temp2 = _mm_srai_epi32(resq_r1, 1); //(w1>>1) |
| temp2 = _mm_sub_epi32(temp2, resq_r3); //(w1>>1) - w3 |
| /* z3 = w1 + (w3 >> 1) */ |
| temp3 = _mm_srai_epi32(resq_r3, 1); //(w3>>1) + w1 |
| temp3 = _mm_add_epi32(temp3, resq_r1); |
| /*----------------------------------------------------------*/ |
| /* x0 = z0 + z3 */ |
| resq_r0 = _mm_add_epi32(temp0, temp3); |
| /* x1 = z1 + z2 */ |
| resq_r1 = _mm_add_epi32(temp1, temp2); |
| /* x2 = z1 - z2 */ |
| resq_r2 = _mm_sub_epi32(temp1, temp2); |
| /* x3 = z0 - z3 */ |
| resq_r3 = _mm_sub_epi32(temp0, temp3); |
| // Matrix transpose |
| /* |
| * a0 b0 c0 d0 |
| * a1 b1 c1 d1 |
| * a2 b2 c2 d2 |
| * a3 b3 c3 d3 |
| */ |
| temp1 = _mm_unpacklo_epi32(resq_r0, resq_r1); //a0 a1 b0 b1 |
| temp3 = _mm_unpacklo_epi32(resq_r2, resq_r3); //a2 a3 b2 b3 |
| temp2 = _mm_unpackhi_epi32(resq_r0, resq_r1); //c0 c1 d0 d1 |
| temp4 = _mm_unpackhi_epi32(resq_r2, resq_r3); //c2 c3 d2 d3 |
| resq_r0 = _mm_unpacklo_epi64(temp1, temp3); //a0 a1 a2 a3 |
| resq_r1 = _mm_unpackhi_epi64(temp1, temp3); //b0 b1 b2 b3 |
| resq_r2 = _mm_unpacklo_epi64(temp2, temp4); //c0 c1 c2 c3 |
| resq_r3 = _mm_unpackhi_epi64(temp2, temp4); //d0 d1 d2 d3 |
| //Transform ends -- horizontal transform |
| |
| //Load pred buffer |
| pred_r0 = _mm_loadl_epi64((__m128i *) (&pu1_pred[0])); //p00 p01 p02 p03 0 0 0 0 0 0 0 0 -- all 8 bits |
| pred_r1 = _mm_loadl_epi64((__m128i *) (&pu1_pred[pred_strd])); //p10 p11 p12 p13 0 0 0 0 0 0 0 0 -- all 8 bits |
| pred_r2 = _mm_loadl_epi64((__m128i *) (&pu1_pred[2 * pred_strd])); //p20 p21 p22 p23 0 0 0 0 0 0 0 0 -- all 8 bits |
| pred_r3 = _mm_loadl_epi64((__m128i *) (&pu1_pred[3 * pred_strd])); //p30 p31 p32 p33 0 0 0 0 0 0 0 0 -- all 8 bits |
| |
| pred_r0 = _mm_and_si128(pred_r0, chroma_mask); |
| pred_r1 = _mm_and_si128(pred_r1, chroma_mask); |
| pred_r2 = _mm_and_si128(pred_r2, chroma_mask); |
| pred_r3 = _mm_and_si128(pred_r3, chroma_mask); |
| |
| pred_r0 = _mm_cvtepu16_epi32(pred_r0); //p00 p01 p02 p03 -- all 32 bits |
| pred_r1 = _mm_cvtepu16_epi32(pred_r1); //p10 p11 p12 p13 -- all 32 bits |
| pred_r2 = _mm_cvtepu16_epi32(pred_r2); //p20 p21 p22 p23 -- all 32 bits |
| pred_r3 = _mm_cvtepu16_epi32(pred_r3); //p30 p31 p32 p33 -- all 32 bits |
| |
| /*--------------------------------------------------------------*/ |
| /* IDCT [ Vertical transformation] and Xij = (xij + 32)>>6 */ |
| /* */ |
| /* Add the prediction and store it back to same buffer */ |
| /*--------------------------------------------------------------*/ |
| /* z0j = y0j + y2j */ |
| temp0 = _mm_add_epi32(resq_r0, resq_r2); |
| /* z1j = y0j - y2j */ |
| temp1 = _mm_sub_epi32(resq_r0, resq_r2); |
| /* z2j = (y1j>>1) - y3j */ |
| temp2 = _mm_srai_epi32(resq_r1, 1); //(y1j>>1) |
| temp2 = _mm_sub_epi32(temp2, resq_r3); |
| /* z3j = y1j + (y3j>>1) */ |
| temp3 = _mm_srai_epi32(resq_r3, 1); //(y3j>>1) |
| temp3 = _mm_add_epi32(temp3, resq_r1); |
| |
| /* x0j = z0j + z3j */ |
| temp4 = _mm_add_epi32(temp0, temp3); |
| temp4 = _mm_add_epi32(temp4, value_32); |
| temp4 = _mm_srai_epi32(temp4, 6); |
| temp4 = _mm_add_epi32(temp4, pred_r0); |
| /* x1j = z1j + z2j */ |
| temp5 = _mm_add_epi32(temp1, temp2); |
| temp5 = _mm_add_epi32(temp5, value_32); |
| temp5 = _mm_srai_epi32(temp5, 6); |
| temp5 = _mm_add_epi32(temp5, pred_r1); |
| /* x2j = z1j - z2j */ |
| temp6 = _mm_sub_epi32(temp1, temp2); |
| temp6 = _mm_add_epi32(temp6, value_32); |
| temp6 = _mm_srai_epi32(temp6, 6); |
| temp6 = _mm_add_epi32(temp6, pred_r2); |
| /* x3j = z0j - z3j */ |
| temp7 = _mm_sub_epi32(temp0, temp3); |
| temp7 = _mm_add_epi32(temp7, value_32); |
| temp7 = _mm_srai_epi32(temp7, 6); |
| temp7 = _mm_add_epi32(temp7, pred_r3); |
| |
| // 32-bit to 16-bit conversion |
| temp0 = _mm_packs_epi32(temp4, temp5); |
| temp1 = _mm_packs_epi32(temp6, temp7); |
| /*------------------------------------------------------------------*/ |
| //Clipping the results to 8 bits |
| sign_reg = _mm_cmpgt_epi16(temp0, zero_8x16b); // sign check |
| temp0 = _mm_and_si128(temp0, sign_reg); |
| sign_reg = _mm_cmpgt_epi16(temp1, zero_8x16b); |
| temp1 = _mm_and_si128(temp1, sign_reg); |
| |
| resq_r0 = _mm_packus_epi16(temp0, temp1); |
| resq_r1 = _mm_srli_si128(resq_r0, 4); |
| resq_r2 = _mm_srli_si128(resq_r1, 4); |
| resq_r3 = _mm_srli_si128(resq_r2, 4); |
| |
| resq_r0 = _mm_cvtepu8_epi16(resq_r0); //p00 p01 p02 p03 -- all 16 bits |
| resq_r1 = _mm_cvtepu8_epi16(resq_r1); //p10 p11 p12 p13 -- all 16 bits |
| resq_r2 = _mm_cvtepu8_epi16(resq_r2); //p20 p21 p22 p23 -- all 16 bits |
| resq_r3 = _mm_cvtepu8_epi16(resq_r3); //p30 p31 p32 p33 -- all 16 bits |
| |
| chroma_mask = _mm_set1_epi16 (0xFF00); |
| out_r0 = _mm_loadl_epi64((__m128i *) (&pu1_out[0])); |
| out_r1 = _mm_loadl_epi64((__m128i *) (&pu1_out[out_strd])); |
| out_r2 = _mm_loadl_epi64((__m128i *) (&pu1_out[2 * out_strd])); |
| out_r3 = _mm_loadl_epi64((__m128i *) (&pu1_out[3 * out_strd])); |
| |
| out_r0 = _mm_and_si128(out_r0, chroma_mask); |
| out_r1 = _mm_and_si128(out_r1, chroma_mask); |
| out_r2 = _mm_and_si128(out_r2, chroma_mask); |
| out_r3 = _mm_and_si128(out_r3, chroma_mask); |
| |
| out_r0 = _mm_add_epi8(out_r0, resq_r0); |
| out_r1 = _mm_add_epi8(out_r1, resq_r1); |
| out_r2 = _mm_add_epi8(out_r2, resq_r2); |
| out_r3 = _mm_add_epi8(out_r3, resq_r3); |
| |
| _mm_storel_epi64((__m128i *)(&pu1_out[0]), out_r0); |
| _mm_storel_epi64((__m128i *)(&pu1_out[out_strd]), out_r1); |
| _mm_storel_epi64((__m128i *)(&pu1_out[2 * out_strd]), out_r2); |
| _mm_storel_epi64((__m128i *)(&pu1_out[3 * out_strd]), out_r3); |
| } |
