190 lines
6.3 KiB
C
190 lines
6.3 KiB
C
/*
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* Copyright (c) 2017 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include <assert.h>
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#include <tmmintrin.h>
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#include "./vpx_dsp_rtcd.h"
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#include "vpx/vpx_integer.h"
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#include "vpx_dsp/x86/bitdepth_conversion_sse2.h"
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void vpx_quantize_b_ssse3(const tran_low_t *coeff_ptr, intptr_t n_coeffs,
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int skip_block, const int16_t *zbin_ptr,
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const int16_t *round_ptr, const int16_t *quant_ptr,
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const int16_t *quant_shift_ptr,
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tran_low_t *qcoeff_ptr, tran_low_t *dqcoeff_ptr,
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const int16_t *dequant_ptr, uint16_t *eob_ptr,
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const int16_t *scan_ptr, const int16_t *iscan_ptr) {
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const __m128i zero = _mm_setzero_si128();
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__m128i coeff0, coeff1;
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__m128i eob;
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__m128i zbin;
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__m128i round, quant, dequant, shift;
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intptr_t index = 0;
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(void)scan_ptr;
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(void)skip_block;
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assert(!skip_block);
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// Setup global values
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{
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const __m128i one = _mm_set1_epi16(1);
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zbin = _mm_load_si128((const __m128i *)zbin_ptr);
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// x86 has no "greater *or equal* comparison. Subtract 1 from zbin so
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// it is a strict "greater" comparison.
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zbin = _mm_sub_epi16(zbin, one);
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round = _mm_load_si128((const __m128i *)round_ptr);
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quant = _mm_load_si128((const __m128i *)quant_ptr);
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dequant = _mm_load_si128((const __m128i *)dequant_ptr);
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shift = _mm_load_si128((const __m128i *)quant_shift_ptr);
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}
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{
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__m128i qcoeff0, qcoeff1;
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__m128i qtmp0, qtmp1;
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__m128i cmp_mask0, cmp_mask1;
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__m128i zero_coeff0, zero_coeff1;
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__m128i iscan0, iscan1;
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__m128i eob1;
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// Do DC and first 15 AC
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coeff0 = load_tran_low(coeff_ptr + index);
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coeff1 = load_tran_low(coeff_ptr + index + 8);
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qcoeff0 = _mm_abs_epi16(coeff0);
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qcoeff1 = _mm_abs_epi16(coeff1);
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cmp_mask0 = _mm_cmpgt_epi16(qcoeff0, zbin);
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// Overwrite DC component.
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zbin = _mm_unpackhi_epi64(zbin, zbin);
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cmp_mask1 = _mm_cmpgt_epi16(qcoeff1, zbin);
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qcoeff0 = _mm_adds_epi16(qcoeff0, round);
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round = _mm_unpackhi_epi64(round, round);
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qcoeff1 = _mm_adds_epi16(qcoeff1, round);
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qtmp0 = _mm_mulhi_epi16(qcoeff0, quant);
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quant = _mm_unpackhi_epi64(quant, quant);
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qtmp1 = _mm_mulhi_epi16(qcoeff1, quant);
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qtmp0 = _mm_add_epi16(qtmp0, qcoeff0);
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qtmp1 = _mm_add_epi16(qtmp1, qcoeff1);
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qcoeff0 = _mm_mulhi_epi16(qtmp0, shift);
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shift = _mm_unpackhi_epi64(shift, shift);
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qcoeff1 = _mm_mulhi_epi16(qtmp1, shift);
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// Reinsert signs
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qcoeff0 = _mm_sign_epi16(qcoeff0, coeff0);
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qcoeff1 = _mm_sign_epi16(qcoeff1, coeff1);
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// Mask out zbin threshold coeffs
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qcoeff0 = _mm_and_si128(qcoeff0, cmp_mask0);
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qcoeff1 = _mm_and_si128(qcoeff1, cmp_mask1);
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store_tran_low(qcoeff0, qcoeff_ptr + index);
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store_tran_low(qcoeff1, qcoeff_ptr + index + 8);
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coeff0 = _mm_mullo_epi16(qcoeff0, dequant);
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dequant = _mm_unpackhi_epi64(dequant, dequant);
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coeff1 = _mm_mullo_epi16(qcoeff1, dequant);
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store_tran_low(coeff0, dqcoeff_ptr + index);
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store_tran_low(coeff1, dqcoeff_ptr + index + 8);
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// Scan for eob
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zero_coeff0 = _mm_cmpeq_epi16(coeff0, zero);
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zero_coeff1 = _mm_cmpeq_epi16(coeff1, zero);
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iscan0 = _mm_load_si128((const __m128i *)(iscan_ptr + index));
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iscan1 = _mm_load_si128((const __m128i *)(iscan_ptr + index + 8));
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// Add one to convert from indices to counts
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iscan0 = _mm_sub_epi16(iscan0, cmp_mask0);
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iscan1 = _mm_sub_epi16(iscan1, cmp_mask1);
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eob = _mm_andnot_si128(zero_coeff0, iscan0);
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eob1 = _mm_andnot_si128(zero_coeff1, iscan1);
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eob = _mm_max_epi16(eob, eob1);
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}
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index += 16;
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// AC only loop
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while (index < n_coeffs) {
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__m128i qcoeff0, qcoeff1;
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__m128i qtmp0, qtmp1;
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__m128i cmp_mask0, cmp_mask1;
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__m128i zero_coeff0, zero_coeff1;
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__m128i iscan0, iscan1;
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__m128i eob0, eob1;
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coeff0 = load_tran_low(coeff_ptr + index);
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coeff1 = load_tran_low(coeff_ptr + index + 8);
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qcoeff0 = _mm_abs_epi16(coeff0);
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qcoeff1 = _mm_abs_epi16(coeff1);
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cmp_mask0 = _mm_cmpgt_epi16(qcoeff0, zbin);
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cmp_mask1 = _mm_cmpgt_epi16(qcoeff1, zbin);
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qcoeff0 = _mm_adds_epi16(qcoeff0, round);
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qcoeff1 = _mm_adds_epi16(qcoeff1, round);
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qtmp0 = _mm_mulhi_epi16(qcoeff0, quant);
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qtmp1 = _mm_mulhi_epi16(qcoeff1, quant);
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qtmp0 = _mm_add_epi16(qtmp0, qcoeff0);
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qtmp1 = _mm_add_epi16(qtmp1, qcoeff1);
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qcoeff0 = _mm_mulhi_epi16(qtmp0, shift);
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qcoeff1 = _mm_mulhi_epi16(qtmp1, shift);
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// Reinsert signs
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qcoeff0 = _mm_sign_epi16(qcoeff0, coeff0);
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qcoeff1 = _mm_sign_epi16(qcoeff1, coeff1);
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// Mask out zbin threshold coeffs
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qcoeff0 = _mm_and_si128(qcoeff0, cmp_mask0);
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qcoeff1 = _mm_and_si128(qcoeff1, cmp_mask1);
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store_tran_low(qcoeff0, qcoeff_ptr + index);
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store_tran_low(qcoeff1, qcoeff_ptr + index + 8);
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coeff0 = _mm_mullo_epi16(qcoeff0, dequant);
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coeff1 = _mm_mullo_epi16(qcoeff1, dequant);
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store_tran_low(coeff0, dqcoeff_ptr + index);
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store_tran_low(coeff1, dqcoeff_ptr + index + 8);
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// Scan for eob
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zero_coeff0 = _mm_cmpeq_epi16(coeff0, zero);
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zero_coeff1 = _mm_cmpeq_epi16(coeff1, zero);
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iscan0 = _mm_load_si128((const __m128i *)(iscan_ptr + index));
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iscan1 = _mm_load_si128((const __m128i *)(iscan_ptr + index + 8));
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// Add one to convert from indices to counts
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iscan0 = _mm_sub_epi16(iscan0, cmp_mask0);
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iscan1 = _mm_sub_epi16(iscan1, cmp_mask1);
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eob0 = _mm_andnot_si128(zero_coeff0, iscan0);
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eob1 = _mm_andnot_si128(zero_coeff1, iscan1);
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eob0 = _mm_max_epi16(eob0, eob1);
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eob = _mm_max_epi16(eob, eob0);
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index += 16;
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}
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// Accumulate EOB
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{
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__m128i eob_shuffled;
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eob_shuffled = _mm_shuffle_epi32(eob, 0xe);
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eob = _mm_max_epi16(eob, eob_shuffled);
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eob_shuffled = _mm_shufflelo_epi16(eob, 0xe);
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eob = _mm_max_epi16(eob, eob_shuffled);
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eob_shuffled = _mm_shufflelo_epi16(eob, 0x1);
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eob = _mm_max_epi16(eob, eob_shuffled);
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*eob_ptr = _mm_extract_epi16(eob, 1);
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}
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}
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