Merge branch 'master' into Sync-weave

1 files changed, 189 insertions, 0 deletions

diff --git a/third_party/aom/av1/encoder/x86/av1_quantize_sse2.c b/third_party/aom/av1/encoder/x86/av1_quantize_sse2.c
new file mode 100644
index 000000000..b07e7717f
--- /dev/null
+++ b/third_party/aom/av1/encoder/x86/av1_quantize_sse2.c
@@ -0,0 +1,189 @@
+/*
+ * 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 <emmintrin.h>
+#include <xmmintrin.h>
+
+#include "config/av1_rtcd.h"
+
+#include "aom/aom_integer.h"
+
+static INLINE void read_coeff(const tran_low_t *coeff, intptr_t offset,
+                              __m128i *c0, __m128i *c1) {
+  const tran_low_t *addr = coeff + offset;
+  if (sizeof(tran_low_t) == 4) {
+    const __m128i x0 = _mm_load_si128((const __m128i *)addr);
+    const __m128i x1 = _mm_load_si128((const __m128i *)addr + 1);
+    const __m128i x2 = _mm_load_si128((const __m128i *)addr + 2);
+    const __m128i x3 = _mm_load_si128((const __m128i *)addr + 3);
+    *c0 = _mm_packs_epi32(x0, x1);
+    *c1 = _mm_packs_epi32(x2, x3);
+  } else {
+    *c0 = _mm_load_si128((const __m128i *)addr);
+    *c1 = _mm_load_si128((const __m128i *)addr + 1);
+  }
+}
+
+static INLINE void write_qcoeff(const __m128i *qc0, const __m128i *qc1,
+                                tran_low_t *qcoeff, intptr_t offset) {
+  tran_low_t *addr = qcoeff + offset;
+  if (sizeof(tran_low_t) == 4) {
+    const __m128i zero = _mm_setzero_si128();
+    __m128i sign_bits = _mm_cmplt_epi16(*qc0, zero);
+    __m128i y0 = _mm_unpacklo_epi16(*qc0, sign_bits);
+    __m128i y1 = _mm_unpackhi_epi16(*qc0, sign_bits);
+    _mm_store_si128((__m128i *)addr, y0);
+    _mm_store_si128((__m128i *)addr + 1, y1);
+
+    sign_bits = _mm_cmplt_epi16(*qc1, zero);
+    y0 = _mm_unpacklo_epi16(*qc1, sign_bits);
+    y1 = _mm_unpackhi_epi16(*qc1, sign_bits);
+    _mm_store_si128((__m128i *)addr + 2, y0);
+    _mm_store_si128((__m128i *)addr + 3, y1);
+  } else {
+    _mm_store_si128((__m128i *)addr, *qc0);
+    _mm_store_si128((__m128i *)addr + 1, *qc1);
+  }
+}
+
+static INLINE void write_zero(tran_low_t *qcoeff, intptr_t offset) {
+  const __m128i zero = _mm_setzero_si128();
+  tran_low_t *addr = qcoeff + offset;
+  if (sizeof(tran_low_t) == 4) {
+    _mm_store_si128((__m128i *)addr, zero);
+    _mm_store_si128((__m128i *)addr + 1, zero);
+    _mm_store_si128((__m128i *)addr + 2, zero);
+    _mm_store_si128((__m128i *)addr + 3, zero);
+  } else {
+    _mm_store_si128((__m128i *)addr, zero);
+    _mm_store_si128((__m128i *)addr + 1, zero);
+  }
+}
+
+static INLINE void quantize(const int16_t *iscan_ptr,
+                            const tran_low_t *coeff_ptr, intptr_t n_coeffs,
+                            tran_low_t *qcoeff_ptr, tran_low_t *dqcoeff_ptr,
+                            const __m128i *round0, const __m128i *round1,
+                            const __m128i *quant0, const __m128i *quant1,
+                            const __m128i *dequant0, const __m128i *dequant1,
+                            const __m128i *thr0, const __m128i *thr1,
+                            __m128i *eob) {
+  __m128i coeff0, coeff1;
+  // Do DC and first 15 AC
+  read_coeff(coeff_ptr, n_coeffs, &coeff0, &coeff1);
+
+  // Poor man's sign extract
+  const __m128i coeff0_sign = _mm_srai_epi16(coeff0, 15);
+  const __m128i coeff1_sign = _mm_srai_epi16(coeff1, 15);
+  __m128i qcoeff0 = _mm_xor_si128(coeff0, coeff0_sign);
+  __m128i qcoeff1 = _mm_xor_si128(coeff1, coeff1_sign);
+  qcoeff0 = _mm_sub_epi16(qcoeff0, coeff0_sign);
+  qcoeff1 = _mm_sub_epi16(qcoeff1, coeff1_sign);
+  const __m128i mask0 = _mm_or_si128(_mm_cmpgt_epi16(qcoeff0, *thr0),
+                                     _mm_cmpeq_epi16(qcoeff0, *thr0));
+  const __m128i mask1 = _mm_or_si128(_mm_cmpgt_epi16(qcoeff1, *thr1),
+                                     _mm_cmpeq_epi16(qcoeff1, *thr1));
+  const int16_t nzflag = _mm_movemask_epi8(mask0) | _mm_movemask_epi8(mask1);
+
+  if (nzflag) {
+    qcoeff0 = _mm_adds_epi16(qcoeff0, *round0);
+    qcoeff1 = _mm_adds_epi16(qcoeff1, *round1);
+    const __m128i qtmp0 = _mm_mulhi_epi16(qcoeff0, *quant0);
+    const __m128i qtmp1 = _mm_mulhi_epi16(qcoeff1, *quant1);
+
+    // 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);
+
+    write_qcoeff(&qcoeff0, &qcoeff1, qcoeff_ptr, n_coeffs);
+
+    coeff0 = _mm_mullo_epi16(qcoeff0, *dequant0);
+    coeff1 = _mm_mullo_epi16(qcoeff1, *dequant1);
+
+    write_qcoeff(&coeff0, &coeff1, dqcoeff_ptr, n_coeffs);
+
+    const __m128i zero = _mm_setzero_si128();
+    // Scan for eob
+    const __m128i zero_coeff0 = _mm_cmpeq_epi16(coeff0, zero);
+    const __m128i zero_coeff1 = _mm_cmpeq_epi16(coeff1, zero);
+    const __m128i nzero_coeff0 = _mm_cmpeq_epi16(zero_coeff0, zero);
+    const __m128i nzero_coeff1 = _mm_cmpeq_epi16(zero_coeff1, zero);
+    const __m128i iscan0 =
+        _mm_load_si128((const __m128i *)(iscan_ptr + n_coeffs));
+    const __m128i iscan1 =
+        _mm_load_si128((const __m128i *)(iscan_ptr + n_coeffs) + 1);
+    // Add one to convert from indices to counts
+    const __m128i iscan0_nz = _mm_sub_epi16(iscan0, nzero_coeff0);
+    const __m128i iscan1_nz = _mm_sub_epi16(iscan1, nzero_coeff1);
+    const __m128i eob0 = _mm_and_si128(iscan0_nz, nzero_coeff0);
+    const __m128i eob1 = _mm_and_si128(iscan1_nz, nzero_coeff1);
+    const __m128i eob2 = _mm_max_epi16(eob0, eob1);
+    *eob = _mm_max_epi16(*eob, eob2);
+  } else {
+    write_zero(qcoeff_ptr, n_coeffs);
+    write_zero(dqcoeff_ptr, n_coeffs);
+  }
+}
+
+void av1_quantize_fp_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) {
+  (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;
+
+  const __m128i round0 = _mm_load_si128((const __m128i *)round_ptr);
+  const __m128i round1 = _mm_unpackhi_epi64(round0, round0);
+  const __m128i quant0 = _mm_load_si128((const __m128i *)quant_ptr);
+  const __m128i quant1 = _mm_unpackhi_epi64(quant0, quant0);
+  const __m128i dequant0 = _mm_load_si128((const __m128i *)dequant_ptr);
+  const __m128i dequant1 = _mm_unpackhi_epi64(dequant0, dequant0);
+  const __m128i thr0 = _mm_srai_epi16(dequant0, 1);
+  const __m128i thr1 = _mm_srai_epi16(dequant1, 1);
+  __m128i eob = _mm_setzero_si128();
+
+  quantize(iscan_ptr, coeff_ptr, n_coeffs, qcoeff_ptr, dqcoeff_ptr, &round0,
+           &round1, &quant0, &quant1, &dequant0, &dequant1, &thr0, &thr1, &eob);
+
+  n_coeffs += 8 * 2;
+
+  // AC only loop
+  while (n_coeffs < 0) {
+    quantize(iscan_ptr, coeff_ptr, n_coeffs, qcoeff_ptr, dqcoeff_ptr, &round1,
+             &round1, &quant1, &quant1, &dequant1, &dequant1, &thr1, &thr1,
+             &eob);
+    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);
+  }
+}