1 files changed, 113 insertions, 0 deletions
diff --git a/media/libvpx/libvpx/vpx_dsp/x86/quantize_sse2.c b/media/libvpx/libvpx/vpx_dsp/x86/quantize_sse2.c
new file mode 100644
index 0000000000..64838eaa7d
--- /dev/null
+++ b/media/libvpx/libvpx/vpx_dsp/x86/quantize_sse2.c
@@ -0,0 +1,113 @@
+/*
+ *  Copyright (c) 2015 The WebM project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include <assert.h>
+#include <emmintrin.h>
+#include <xmmintrin.h>
+
+#include "./vpx_dsp_rtcd.h"
+#include "vpx/vpx_integer.h"
+#include "vpx_dsp/x86/bitdepth_conversion_sse2.h"
+#include "vpx_dsp/x86/quantize_sse2.h"
+#include "vp9/common/vp9_scan.h"
+
+void vpx_quantize_b_sse2(const tran_low_t *coeff_ptr, intptr_t n_coeffs,
+                         const struct macroblock_plane *const mb_plane,
+                         tran_low_t *qcoeff_ptr, tran_low_t *dqcoeff_ptr,
+                         const int16_t *dequant_ptr, uint16_t *eob_ptr,
+                         const struct ScanOrder *const scan_order) {
+  const __m128i zero = _mm_setzero_si128();
+  int index = 16;
+  const int16_t *iscan = scan_order->iscan;
+
+  __m128i zbin, round, quant, dequant, shift;
+  __m128i coeff0, coeff1, coeff0_sign, coeff1_sign;
+  __m128i qcoeff0, qcoeff1;
+  __m128i cmp_mask0, cmp_mask1;
+  __m128i eob, eob0;
+
+  // Setup global values.
+  load_b_values(mb_plane, &zbin, &round, &quant, dequant_ptr, &dequant, &shift);
+
+  // Do DC and first 15 AC.
+  coeff0 = load_tran_low(coeff_ptr);
+  coeff1 = load_tran_low(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_tran_low(qcoeff0, qcoeff_ptr);
+  store_tran_low(qcoeff1, qcoeff_ptr + 8);
+
+  calculate_dqcoeff_and_store(qcoeff0, dequant, dqcoeff_ptr);
+  dequant = _mm_unpackhi_epi64(dequant, dequant);
+  calculate_dqcoeff_and_store(qcoeff1, dequant, dqcoeff_ptr + 8);
+
+  eob = scan_for_eob(&qcoeff0, &qcoeff1, iscan, 0, zero);
+
+  // AC only loop.
+  while (index < n_coeffs) {
+    coeff0 = load_tran_low(coeff_ptr + index);
+    coeff1 = load_tran_low(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_tran_low(qcoeff0, qcoeff_ptr + index);
+    store_tran_low(qcoeff1, qcoeff_ptr + index + 8);
+
+    calculate_dqcoeff_and_store(qcoeff0, dequant, dqcoeff_ptr + index);
+    calculate_dqcoeff_and_store(qcoeff1, dequant, dqcoeff_ptr + index + 8);
+
+    eob0 = scan_for_eob(&qcoeff0, &qcoeff1, iscan, index, zero);
+    eob = _mm_max_epi16(eob, eob0);
+
+    index += 16;
+  }
+
+  *eob_ptr = accumulate_eob(eob);
+}