127 lines
4.1 KiB
C
127 lines
4.1 KiB
C
/*
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* Copyright (c) 2015 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 <emmintrin.h>
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#include <xmmintrin.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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#include "vpx_dsp/x86/quantize_x86.h"
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void vpx_quantize_b_sse2(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, tran_low_t *qcoeff_ptr,
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tran_low_t *dqcoeff_ptr, const int16_t *dequant_ptr,
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uint16_t *eob_ptr, const int16_t *scan_ptr,
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const int16_t *iscan_ptr) {
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const __m128i zero = _mm_setzero_si128();
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int index = 16;
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__m128i zbin, round, quant, dequant, shift;
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__m128i coeff0, coeff1, coeff0_sign, coeff1_sign;
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__m128i qcoeff0, qcoeff1;
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__m128i cmp_mask0, cmp_mask1;
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__m128i eob, eob0;
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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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load_b_values(zbin_ptr, &zbin, round_ptr, &round, quant_ptr, &quant,
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dequant_ptr, &dequant, quant_shift_ptr, &shift);
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// Do DC and first 15 AC.
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coeff0 = load_tran_low(coeff_ptr);
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coeff1 = load_tran_low(coeff_ptr + 8);
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// Poor man's abs().
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coeff0_sign = _mm_srai_epi16(coeff0, 15);
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coeff1_sign = _mm_srai_epi16(coeff1, 15);
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qcoeff0 = invert_sign_sse2(coeff0, coeff0_sign);
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qcoeff1 = invert_sign_sse2(coeff1, coeff1_sign);
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cmp_mask0 = _mm_cmpgt_epi16(qcoeff0, zbin);
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zbin = _mm_unpackhi_epi64(zbin, zbin); // Switch DC to AC
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cmp_mask1 = _mm_cmpgt_epi16(qcoeff1, zbin);
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calculate_qcoeff(&qcoeff0, round, quant, shift);
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round = _mm_unpackhi_epi64(round, round);
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quant = _mm_unpackhi_epi64(quant, quant);
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shift = _mm_unpackhi_epi64(shift, shift);
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calculate_qcoeff(&qcoeff1, round, quant, shift);
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// Reinsert signs
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qcoeff0 = invert_sign_sse2(qcoeff0, coeff0_sign);
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qcoeff1 = invert_sign_sse2(qcoeff1, coeff1_sign);
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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);
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store_tran_low(qcoeff1, qcoeff_ptr + 8);
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coeff0 = calculate_dqcoeff(qcoeff0, dequant);
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dequant = _mm_unpackhi_epi64(dequant, dequant);
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coeff1 = calculate_dqcoeff(qcoeff1, dequant);
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store_tran_low(coeff0, dqcoeff_ptr);
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store_tran_low(coeff1, dqcoeff_ptr + 8);
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eob =
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scan_for_eob(&coeff0, &coeff1, cmp_mask0, cmp_mask1, iscan_ptr, 0, zero);
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// AC only loop.
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while (index < n_coeffs) {
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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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coeff0_sign = _mm_srai_epi16(coeff0, 15);
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coeff1_sign = _mm_srai_epi16(coeff1, 15);
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qcoeff0 = invert_sign_sse2(coeff0, coeff0_sign);
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qcoeff1 = invert_sign_sse2(coeff1, coeff1_sign);
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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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calculate_qcoeff(&qcoeff0, round, quant, shift);
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calculate_qcoeff(&qcoeff1, round, quant, shift);
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qcoeff0 = invert_sign_sse2(qcoeff0, coeff0_sign);
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qcoeff1 = invert_sign_sse2(qcoeff1, coeff1_sign);
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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 = calculate_dqcoeff(qcoeff0, dequant);
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coeff1 = calculate_dqcoeff(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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eob0 = scan_for_eob(&coeff0, &coeff1, cmp_mask0, cmp_mask1, iscan_ptr,
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index, zero);
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eob = _mm_max_epi16(eob, eob0);
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index += 16;
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}
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*eob_ptr = accumulate_eob(eob);
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}
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