1 files changed, 77 insertions, 0 deletions
diff --git a/third_party/aom/aom_dsp/x86/quantize_x86.h b/third_party/aom/aom_dsp/x86/quantize_x86.h
new file mode 100644
index 000000000..4eed7dd29
--- /dev/null
+++ b/third_party/aom/aom_dsp/x86/quantize_x86.h
@@ -0,0 +1,77 @@
+/*
+ *  Copyright (c) 2018, 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 <emmintrin.h>
+
+#include "aom/aom_integer.h"
+
+static INLINE void load_b_values(const int16_t *zbin_ptr, __m128i *zbin,
+                                 const int16_t *round_ptr, __m128i *round,
+                                 const int16_t *quant_ptr, __m128i *quant,
+                                 const int16_t *dequant_ptr, __m128i *dequant,
+                                 const int16_t *shift_ptr, __m128i *shift) {
+  *zbin = _mm_load_si128((const __m128i *)zbin_ptr);
+  *round = _mm_load_si128((const __m128i *)round_ptr);
+  *quant = _mm_load_si128((const __m128i *)quant_ptr);
+  *zbin = _mm_sub_epi16(*zbin, _mm_set1_epi16(1));
+  *dequant = _mm_load_si128((const __m128i *)dequant_ptr);
+  *shift = _mm_load_si128((const __m128i *)shift_ptr);
+}
+
+// With ssse3 and later abs() and sign() are preferred.
+static INLINE __m128i invert_sign_sse2(__m128i a, __m128i sign) {
+  a = _mm_xor_si128(a, sign);
+  return _mm_sub_epi16(a, sign);
+}
+
+static INLINE void calculate_qcoeff(__m128i *coeff, const __m128i round,
+                                    const __m128i quant, const __m128i shift) {
+  __m128i tmp, qcoeff;
+  qcoeff = _mm_adds_epi16(*coeff, round);
+  tmp = _mm_mulhi_epi16(qcoeff, quant);
+  qcoeff = _mm_add_epi16(tmp, qcoeff);
+  *coeff = _mm_mulhi_epi16(qcoeff, shift);
+}
+
+static INLINE __m128i calculate_dqcoeff(__m128i qcoeff, __m128i dequant) {
+  return _mm_mullo_epi16(qcoeff, dequant);
+}
+
+// Scan 16 values for eob reference in scan_ptr. Use masks (-1) from comparing
+// to zbin to add 1 to the index in 'scan'.
+static INLINE __m128i scan_for_eob(__m128i *coeff0, __m128i *coeff1,
+                                   const __m128i zbin_mask0,
+                                   const __m128i zbin_mask1,
+                                   const int16_t *scan_ptr, const int index,
+                                   const __m128i zero) {
+  const __m128i zero_coeff0 = _mm_cmpeq_epi16(*coeff0, zero);
+  const __m128i zero_coeff1 = _mm_cmpeq_epi16(*coeff1, zero);
+  __m128i scan0 = _mm_load_si128((const __m128i *)(scan_ptr + index));
+  __m128i scan1 = _mm_load_si128((const __m128i *)(scan_ptr + index + 8));
+  __m128i eob0, eob1;
+  // Add one to convert from indices to counts
+  scan0 = _mm_sub_epi16(scan0, zbin_mask0);
+  scan1 = _mm_sub_epi16(scan1, zbin_mask1);
+  eob0 = _mm_andnot_si128(zero_coeff0, scan0);
+  eob1 = _mm_andnot_si128(zero_coeff1, scan1);
+  return _mm_max_epi16(eob0, eob1);
+}
+
+static INLINE int16_t accumulate_eob(__m128i 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);
+  return _mm_extract_epi16(eob, 1);
+}