ref: b121a3e7b8be493c1fa91a740300e1880339fb93
dir: /vp10/encoder/x86/quantize_sse2.c/
/* * Copyright (c) 2014 The WebM project authors. All Rights Reserved. * * Use of this source code is governed by a BSD-style license * that can be found in the LICENSE file in the root of the source * tree. An additional intellectual property rights grant can be found * in the file PATENTS. All contributing project authors may * be found in the AUTHORS file in the root of the source tree. */ #include <emmintrin.h> #include <xmmintrin.h> #include "./vp10_rtcd.h" #include "vpx/vpx_integer.h" void vp10_quantize_fp_sse2(const int16_t* coeff_ptr, intptr_t n_coeffs, int skip_block, const int16_t* zbin_ptr, const int16_t* round_ptr, const int16_t* quant_ptr, const int16_t* quant_shift_ptr, int16_t* qcoeff_ptr, int16_t* dqcoeff_ptr, const int16_t* dequant_ptr, uint16_t* eob_ptr, const int16_t* scan_ptr, const int16_t* iscan_ptr) { __m128i zero; __m128i thr; int16_t nzflag; (void)scan_ptr; (void)zbin_ptr; (void)quant_shift_ptr; coeff_ptr += n_coeffs; iscan_ptr += n_coeffs; qcoeff_ptr += n_coeffs; dqcoeff_ptr += n_coeffs; n_coeffs = -n_coeffs; zero = _mm_setzero_si128(); if (!skip_block) { __m128i eob; __m128i round, quant, dequant; { __m128i coeff0, coeff1; // Setup global values { round = _mm_load_si128((const __m128i*)round_ptr); quant = _mm_load_si128((const __m128i*)quant_ptr); dequant = _mm_load_si128((const __m128i*)dequant_ptr); } { __m128i coeff0_sign, coeff1_sign; __m128i qcoeff0, qcoeff1; __m128i qtmp0, qtmp1; // Do DC and first 15 AC coeff0 = _mm_load_si128((const __m128i*)(coeff_ptr + n_coeffs)); coeff1 = _mm_load_si128((const __m128i*)(coeff_ptr + n_coeffs) + 1); // Poor man's sign extract coeff0_sign = _mm_srai_epi16(coeff0, 15); coeff1_sign = _mm_srai_epi16(coeff1, 15); qcoeff0 = _mm_xor_si128(coeff0, coeff0_sign); qcoeff1 = _mm_xor_si128(coeff1, coeff1_sign); qcoeff0 = _mm_sub_epi16(qcoeff0, coeff0_sign); qcoeff1 = _mm_sub_epi16(qcoeff1, coeff1_sign); qcoeff0 = _mm_adds_epi16(qcoeff0, round); round = _mm_unpackhi_epi64(round, round); qcoeff1 = _mm_adds_epi16(qcoeff1, round); qtmp0 = _mm_mulhi_epi16(qcoeff0, quant); quant = _mm_unpackhi_epi64(quant, quant); qtmp1 = _mm_mulhi_epi16(qcoeff1, quant); // Reinsert signs qcoeff0 = _mm_xor_si128(qtmp0, coeff0_sign); qcoeff1 = _mm_xor_si128(qtmp1, coeff1_sign); qcoeff0 = _mm_sub_epi16(qcoeff0, coeff0_sign); qcoeff1 = _mm_sub_epi16(qcoeff1, coeff1_sign); _mm_store_si128((__m128i*)(qcoeff_ptr + n_coeffs), qcoeff0); _mm_store_si128((__m128i*)(qcoeff_ptr + n_coeffs) + 1, qcoeff1); coeff0 = _mm_mullo_epi16(qcoeff0, dequant); dequant = _mm_unpackhi_epi64(dequant, dequant); coeff1 = _mm_mullo_epi16(qcoeff1, dequant); _mm_store_si128((__m128i*)(dqcoeff_ptr + n_coeffs), coeff0); _mm_store_si128((__m128i*)(dqcoeff_ptr + n_coeffs) + 1, coeff1); } { // Scan for eob __m128i zero_coeff0, zero_coeff1; __m128i nzero_coeff0, nzero_coeff1; __m128i iscan0, iscan1; __m128i eob1; zero_coeff0 = _mm_cmpeq_epi16(coeff0, zero); zero_coeff1 = _mm_cmpeq_epi16(coeff1, zero); nzero_coeff0 = _mm_cmpeq_epi16(zero_coeff0, zero); nzero_coeff1 = _mm_cmpeq_epi16(zero_coeff1, zero); iscan0 = _mm_load_si128((const __m128i*)(iscan_ptr + n_coeffs)); iscan1 = _mm_load_si128((const __m128i*)(iscan_ptr + n_coeffs) + 1); // Add one to convert from indices to counts iscan0 = _mm_sub_epi16(iscan0, nzero_coeff0); iscan1 = _mm_sub_epi16(iscan1, nzero_coeff1); eob = _mm_and_si128(iscan0, nzero_coeff0); eob1 = _mm_and_si128(iscan1, nzero_coeff1); eob = _mm_max_epi16(eob, eob1); } n_coeffs += 8 * 2; } thr = _mm_srai_epi16(dequant, 1); // AC only loop while (n_coeffs < 0) { __m128i coeff0, coeff1; { __m128i coeff0_sign, coeff1_sign; __m128i qcoeff0, qcoeff1; __m128i qtmp0, qtmp1; coeff0 = _mm_load_si128((const __m128i*)(coeff_ptr + n_coeffs)); coeff1 = _mm_load_si128((const __m128i*)(coeff_ptr + n_coeffs) + 1); // Poor man's sign extract coeff0_sign = _mm_srai_epi16(coeff0, 15); coeff1_sign = _mm_srai_epi16(coeff1, 15); qcoeff0 = _mm_xor_si128(coeff0, coeff0_sign); qcoeff1 = _mm_xor_si128(coeff1, coeff1_sign); qcoeff0 = _mm_sub_epi16(qcoeff0, coeff0_sign); qcoeff1 = _mm_sub_epi16(qcoeff1, coeff1_sign); nzflag = _mm_movemask_epi8(_mm_cmpgt_epi16(qcoeff0, thr)) | _mm_movemask_epi8(_mm_cmpgt_epi16(qcoeff1, thr)); if (nzflag) { qcoeff0 = _mm_adds_epi16(qcoeff0, round); qcoeff1 = _mm_adds_epi16(qcoeff1, round); qtmp0 = _mm_mulhi_epi16(qcoeff0, quant); qtmp1 = _mm_mulhi_epi16(qcoeff1, quant); // Reinsert signs qcoeff0 = _mm_xor_si128(qtmp0, coeff0_sign); qcoeff1 = _mm_xor_si128(qtmp1, coeff1_sign); qcoeff0 = _mm_sub_epi16(qcoeff0, coeff0_sign); qcoeff1 = _mm_sub_epi16(qcoeff1, coeff1_sign); _mm_store_si128((__m128i*)(qcoeff_ptr + n_coeffs), qcoeff0); _mm_store_si128((__m128i*)(qcoeff_ptr + n_coeffs) + 1, qcoeff1); coeff0 = _mm_mullo_epi16(qcoeff0, dequant); coeff1 = _mm_mullo_epi16(qcoeff1, dequant); _mm_store_si128((__m128i*)(dqcoeff_ptr + n_coeffs), coeff0); _mm_store_si128((__m128i*)(dqcoeff_ptr + n_coeffs) + 1, coeff1); } else { _mm_store_si128((__m128i*)(qcoeff_ptr + n_coeffs), zero); _mm_store_si128((__m128i*)(qcoeff_ptr + n_coeffs) + 1, zero); _mm_store_si128((__m128i*)(dqcoeff_ptr + n_coeffs), zero); _mm_store_si128((__m128i*)(dqcoeff_ptr + n_coeffs) + 1, zero); } } if (nzflag) { // Scan for eob __m128i zero_coeff0, zero_coeff1; __m128i nzero_coeff0, nzero_coeff1; __m128i iscan0, iscan1; __m128i eob0, eob1; zero_coeff0 = _mm_cmpeq_epi16(coeff0, zero); zero_coeff1 = _mm_cmpeq_epi16(coeff1, zero); nzero_coeff0 = _mm_cmpeq_epi16(zero_coeff0, zero); nzero_coeff1 = _mm_cmpeq_epi16(zero_coeff1, zero); iscan0 = _mm_load_si128((const __m128i*)(iscan_ptr + n_coeffs)); iscan1 = _mm_load_si128((const __m128i*)(iscan_ptr + n_coeffs) + 1); // Add one to convert from indices to counts iscan0 = _mm_sub_epi16(iscan0, nzero_coeff0); iscan1 = _mm_sub_epi16(iscan1, nzero_coeff1); eob0 = _mm_and_si128(iscan0, nzero_coeff0); eob1 = _mm_and_si128(iscan1, nzero_coeff1); eob0 = _mm_max_epi16(eob0, eob1); eob = _mm_max_epi16(eob, eob0); } n_coeffs += 8 * 2; } // Accumulate EOB { __m128i eob_shuffled; eob_shuffled = _mm_shuffle_epi32(eob, 0xe); eob = _mm_max_epi16(eob, eob_shuffled); eob_shuffled = _mm_shufflelo_epi16(eob, 0xe); eob = _mm_max_epi16(eob, eob_shuffled); eob_shuffled = _mm_shufflelo_epi16(eob, 0x1); eob = _mm_max_epi16(eob, eob_shuffled); *eob_ptr = _mm_extract_epi16(eob, 1); } } else { do { _mm_store_si128((__m128i*)(dqcoeff_ptr + n_coeffs), zero); _mm_store_si128((__m128i*)(dqcoeff_ptr + n_coeffs) + 1, zero); _mm_store_si128((__m128i*)(qcoeff_ptr + n_coeffs), zero); _mm_store_si128((__m128i*)(qcoeff_ptr + n_coeffs) + 1, zero); n_coeffs += 8 * 2; } while (n_coeffs < 0); *eob_ptr = 0; } }