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-rw-r--r--third_party/aom/aom_dsp/x86/quantize_sse2.c147
1 files changed, 147 insertions, 0 deletions
diff --git a/third_party/aom/aom_dsp/x86/quantize_sse2.c b/third_party/aom/aom_dsp/x86/quantize_sse2.c
new file mode 100644
index 0000000000..d3de6e24db
--- /dev/null
+++ b/third_party/aom/aom_dsp/x86/quantize_sse2.c
@@ -0,0 +1,147 @@
+/*
+ * Copyright (c) 2016, Alliance for Open Media. All rights reserved
+ *
+ * This source code is subject to the terms of the BSD 2 Clause License and
+ * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
+ * was not distributed with this source code in the LICENSE file, you can
+ * obtain it at www.aomedia.org/license/software. If the Alliance for Open
+ * Media Patent License 1.0 was not distributed with this source code in the
+ * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
+ */
+
+#include <assert.h>
+#include <emmintrin.h>
+#include <xmmintrin.h>
+
+#include "config/aom_dsp_rtcd.h"
+
+#include "aom/aom_integer.h"
+#include "aom_dsp/x86/quantize_x86.h"
+
+static INLINE __m128i load_coefficients(const tran_low_t *coeff_ptr) {
+ assert(sizeof(tran_low_t) == 4);
+
+ return _mm_setr_epi16((int16_t)coeff_ptr[0], (int16_t)coeff_ptr[1],
+ (int16_t)coeff_ptr[2], (int16_t)coeff_ptr[3],
+ (int16_t)coeff_ptr[4], (int16_t)coeff_ptr[5],
+ (int16_t)coeff_ptr[6], (int16_t)coeff_ptr[7]);
+}
+
+static INLINE void store_coefficients(__m128i coeff_vals,
+ tran_low_t *coeff_ptr) {
+ assert(sizeof(tran_low_t) == 4);
+
+ __m128i one = _mm_set1_epi16(1);
+ __m128i coeff_vals_hi = _mm_mulhi_epi16(coeff_vals, one);
+ __m128i coeff_vals_lo = _mm_mullo_epi16(coeff_vals, one);
+ __m128i coeff_vals_1 = _mm_unpacklo_epi16(coeff_vals_lo, coeff_vals_hi);
+ __m128i coeff_vals_2 = _mm_unpackhi_epi16(coeff_vals_lo, coeff_vals_hi);
+ _mm_store_si128((__m128i *)(coeff_ptr), coeff_vals_1);
+ _mm_store_si128((__m128i *)(coeff_ptr + 4), coeff_vals_2);
+}
+
+void aom_quantize_b_sse2(const tran_low_t *coeff_ptr, intptr_t n_coeffs,
+ const int16_t *zbin_ptr, const int16_t *round_ptr,
+ const int16_t *quant_ptr,
+ const int16_t *quant_shift_ptr, tran_low_t *qcoeff_ptr,
+ tran_low_t *dqcoeff_ptr, const int16_t *dequant_ptr,
+ uint16_t *eob_ptr, const int16_t *scan_ptr,
+ const int16_t *iscan_ptr) {
+ const __m128i zero = _mm_setzero_si128();
+ int index = 16;
+
+ __m128i zbin, round, quant, dequant, shift;
+ __m128i coeff0, coeff1, coeff0_sign, coeff1_sign;
+ __m128i qcoeff0, qcoeff1;
+ __m128i cmp_mask0, cmp_mask1;
+ __m128i eob, eob0;
+
+ (void)scan_ptr;
+
+ // Setup global values.
+ load_b_values(zbin_ptr, &zbin, round_ptr, &round, quant_ptr, &quant,
+ dequant_ptr, &dequant, quant_shift_ptr, &shift);
+
+ // Do DC and first 15 AC.
+ coeff0 = load_coefficients(coeff_ptr);
+ coeff1 = load_coefficients(coeff_ptr + 8);
+
+ // Poor man's abs().
+ coeff0_sign = _mm_srai_epi16(coeff0, 15);
+ coeff1_sign = _mm_srai_epi16(coeff1, 15);
+ qcoeff0 = invert_sign_sse2(coeff0, coeff0_sign);
+ qcoeff1 = invert_sign_sse2(coeff1, coeff1_sign);
+
+ cmp_mask0 = _mm_cmpgt_epi16(qcoeff0, zbin);
+ zbin = _mm_unpackhi_epi64(zbin, zbin); // Switch DC to AC
+ cmp_mask1 = _mm_cmpgt_epi16(qcoeff1, zbin);
+
+ calculate_qcoeff(&qcoeff0, round, quant, shift);
+
+ round = _mm_unpackhi_epi64(round, round);
+ quant = _mm_unpackhi_epi64(quant, quant);
+ shift = _mm_unpackhi_epi64(shift, shift);
+
+ calculate_qcoeff(&qcoeff1, round, quant, shift);
+
+ // Reinsert signs
+ qcoeff0 = invert_sign_sse2(qcoeff0, coeff0_sign);
+ qcoeff1 = invert_sign_sse2(qcoeff1, coeff1_sign);
+
+ // Mask out zbin threshold coeffs
+ qcoeff0 = _mm_and_si128(qcoeff0, cmp_mask0);
+ qcoeff1 = _mm_and_si128(qcoeff1, cmp_mask1);
+
+ store_coefficients(qcoeff0, qcoeff_ptr);
+ store_coefficients(qcoeff1, qcoeff_ptr + 8);
+
+ coeff0 = calculate_dqcoeff(qcoeff0, dequant);
+ dequant = _mm_unpackhi_epi64(dequant, dequant);
+ coeff1 = calculate_dqcoeff(qcoeff1, dequant);
+
+ store_coefficients(coeff0, dqcoeff_ptr);
+ store_coefficients(coeff1, dqcoeff_ptr + 8);
+
+ eob =
+ scan_for_eob(&coeff0, &coeff1, cmp_mask0, cmp_mask1, iscan_ptr, 0, zero);
+
+ // AC only loop.
+ while (index < n_coeffs) {
+ coeff0 = load_coefficients(coeff_ptr + index);
+ coeff1 = load_coefficients(coeff_ptr + index + 8);
+
+ coeff0_sign = _mm_srai_epi16(coeff0, 15);
+ coeff1_sign = _mm_srai_epi16(coeff1, 15);
+ qcoeff0 = invert_sign_sse2(coeff0, coeff0_sign);
+ qcoeff1 = invert_sign_sse2(coeff1, coeff1_sign);
+
+ cmp_mask0 = _mm_cmpgt_epi16(qcoeff0, zbin);
+ cmp_mask1 = _mm_cmpgt_epi16(qcoeff1, zbin);
+
+ calculate_qcoeff(&qcoeff0, round, quant, shift);
+ calculate_qcoeff(&qcoeff1, round, quant, shift);
+
+ qcoeff0 = invert_sign_sse2(qcoeff0, coeff0_sign);
+ qcoeff1 = invert_sign_sse2(qcoeff1, coeff1_sign);
+
+ qcoeff0 = _mm_and_si128(qcoeff0, cmp_mask0);
+ qcoeff1 = _mm_and_si128(qcoeff1, cmp_mask1);
+
+ store_coefficients(qcoeff0, qcoeff_ptr + index);
+ store_coefficients(qcoeff1, qcoeff_ptr + index + 8);
+
+ coeff0 = calculate_dqcoeff(qcoeff0, dequant);
+ coeff1 = calculate_dqcoeff(qcoeff1, dequant);
+
+ store_coefficients(coeff0, dqcoeff_ptr + index);
+ store_coefficients(coeff1, dqcoeff_ptr + index + 8);
+
+ eob0 = scan_for_eob(&coeff0, &coeff1, cmp_mask0, cmp_mask1, iscan_ptr,
+ index, zero);
+ eob = _mm_max_epi16(eob, eob0);
+
+ index += 16;
+ }
+
+ *eob_ptr = accumulate_eob(eob);
+}