mips msa vp8 quantize optimization

average improvement ~2x-3x

Change-Id: I6fc37191bf9cb5a67e1af9787d0d27659c17bdba

1 files changed, 246 insertions, 0 deletions

diff --git a/vp8/encoder/mips/msa/quantize_msa.c b/vp8/encoder/mips/msa/quantize_msa.c
new file mode 100644
index 000000000..0f97646b5
--- /dev/null
+++ b/vp8/encoder/mips/msa/quantize_msa.c
@@ -0,0 +1,246 @@
+/*
+ *  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 "./vp8_rtcd.h"
+#include "vp8/common/mips/msa/vp8_macros_msa.h"
+#include "vp8/encoder/block.h"
+
+static int8_t fast_quantize_b_msa(int16_t *coeff_ptr, int16_t *zbin,
+                                  int16_t *round, int16_t *quant,
+                                  int16_t *de_quant, int16_t *q_coeff,
+                                  int16_t *dq_coeff)
+{
+    int32_t cnt, eob;
+    v16i8 inv_zig_zag = { 0, 1, 5, 6, 2, 4, 7, 12,
+                          3, 8, 11, 13, 9, 10, 14, 15 };
+    v8i16 round0, round1;
+    v8i16 sign_z0, sign_z1;
+    v8i16 q_coeff0, q_coeff1;
+    v8i16 x0, x1, de_quant0, de_quant1;
+    v8i16 coeff0, coeff1, z0, z1;
+    v8i16 quant0, quant1, quant2, quant3;
+    v8i16 zero = { 0 };
+    v8i16 inv_zig_zag0, inv_zig_zag1;
+    v8i16 zigzag_mask0 = { 0, 1, 4, 8, 5, 2, 3, 6 };
+    v8i16 zigzag_mask1 = { 9, 12, 13, 10, 7, 11, 14, 15 };
+    v8i16 temp0_h, temp1_h, temp2_h, temp3_h;
+    v4i32 temp0_w, temp1_w, temp2_w, temp3_w;
+
+    ILVRL_B2_SH(zero, inv_zig_zag, inv_zig_zag0, inv_zig_zag1);
+    eob = -1;
+    LD_SH2(coeff_ptr, 8, coeff0, coeff1);
+    VSHF_H2_SH(coeff0, coeff1, coeff0, coeff1, zigzag_mask0, zigzag_mask1,
+               z0, z1);
+    LD_SH2(round, 8, coeff0, coeff1);
+    VSHF_H2_SH(coeff0, coeff1, coeff0, coeff1, zigzag_mask0, zigzag_mask1,
+               round0, round1);
+    LD_SH2(quant, 8, coeff0, coeff1);
+    VSHF_H2_SH(coeff0, coeff1, coeff0, coeff1, zigzag_mask0, zigzag_mask1,
+               quant0, quant2);
+    sign_z0 = z0 >> 15;
+    sign_z1 = z1 >> 15;
+    x0 = __msa_add_a_h(z0, zero);
+    x1 = __msa_add_a_h(z1, zero);
+    ILVL_H2_SH(quant0, quant0, quant2, quant2, quant1, quant3);
+    ILVR_H2_SH(quant0, quant0, quant2, quant2, quant0, quant2);
+    ILVL_H2_SH(round0, x0, round1, x1, temp1_h, temp3_h);
+    ILVR_H2_SH(round0, x0, round1, x1, temp0_h, temp2_h);
+    DOTP_SH4_SW(temp0_h, temp1_h, temp2_h, temp3_h, quant0, quant1, quant2,
+                quant3, temp0_w, temp1_w, temp2_w, temp3_w);
+    SRA_4V(temp0_w, temp1_w, temp2_w, temp3_w, 16);
+    PCKEV_H2_SH(temp1_w, temp0_w, temp3_w, temp2_w, x0, x1);
+    x0 = x0 ^ sign_z0;
+    x1 = x1 ^ sign_z1;
+    SUB2(x0, sign_z0, x1, sign_z1, x0, x1);
+    VSHF_H2_SH(x0, x1, x0, x1, inv_zig_zag0, inv_zig_zag1, q_coeff0, q_coeff1);
+    ST_SH2(q_coeff0, q_coeff1, q_coeff, 8);
+    LD_SH2(de_quant, 8, de_quant0, de_quant1);
+    q_coeff0 *= de_quant0;
+    q_coeff1 *= de_quant1;
+    ST_SH2(q_coeff0, q_coeff1, dq_coeff, 8);
+
+    for (cnt = 0; cnt < 16; ++cnt)
+    {
+        if ((cnt <= 7) && (x1[7 - cnt] != 0))
+        {
+            eob = (15 - cnt);
+            break;
+        }
+
+        if ((cnt > 7) && (x0[7 - (cnt - 8)] != 0))
+        {
+            eob = (7 - (cnt - 8));
+            break;
+        }
+    }
+
+    return (int8_t)(eob + 1);
+}
+
+static int8_t exact_regular_quantize_b_msa(int16_t *zbin_boost,
+                                           int16_t *coeff_ptr,
+                                           int16_t *zbin,
+                                           int16_t *round,
+                                           int16_t *quant,
+                                           int16_t *quant_shift,
+                                           int16_t *de_quant,
+                                           int16_t zbin_oq_in,
+                                           int16_t *q_coeff,
+                                           int16_t *dq_coeff)
+{
+    int32_t cnt, eob;
+    int16_t *boost_temp = zbin_boost;
+    v16i8 inv_zig_zag = { 0, 1, 5, 6, 2, 4, 7, 12,
+                          3, 8, 11, 13, 9, 10, 14, 15 };
+    v8i16 round0, round1;
+    v8i16 sign_z0, sign_z1;
+    v8i16 q_coeff0, q_coeff1;
+    v8i16 z_bin0, z_bin1, zbin_o_q;
+    v8i16 x0, x1, sign_x0, sign_x1, de_quant0, de_quant1;
+    v8i16 coeff0, coeff1, z0, z1;
+    v8i16 quant0, quant1, quant2, quant3;
+    v8i16 zero = { 0 };
+    v8i16 inv_zig_zag0, inv_zig_zag1;
+    v8i16 zigzag_mask0 = { 0, 1, 4, 8, 5, 2, 3, 6 };
+    v8i16 zigzag_mask1 = { 9, 12, 13, 10, 7, 11, 14, 15 };
+    v8i16 temp0_h, temp1_h, temp2_h, temp3_h;
+    v4i32 temp0_w, temp1_w, temp2_w, temp3_w;
+
+    ILVRL_B2_SH(zero, inv_zig_zag, inv_zig_zag0, inv_zig_zag1);
+    zbin_o_q = __msa_fill_h(zbin_oq_in);
+    eob = -1;
+    LD_SH2(coeff_ptr, 8, coeff0, coeff1);
+    VSHF_H2_SH(coeff0, coeff1, coeff0, coeff1, zigzag_mask0, zigzag_mask1,
+               z0, z1);
+    LD_SH2(round, 8, coeff0, coeff1);
+    VSHF_H2_SH(coeff0, coeff1, coeff0, coeff1, zigzag_mask0, zigzag_mask1,
+               round0, round1);
+    LD_SH2(quant, 8, coeff0, coeff1);
+    VSHF_H2_SH(coeff0, coeff1, coeff0, coeff1, zigzag_mask0, zigzag_mask1,
+               quant0, quant2);
+    LD_SH2(zbin, 8, coeff0, coeff1);
+    VSHF_H2_SH(coeff0, coeff1, coeff0, coeff1, zigzag_mask0, zigzag_mask1,
+               z_bin0, z_bin1);
+    sign_z0 = z0 >> 15;
+    sign_z1 = z1 >> 15;
+    x0 = __msa_add_a_h(z0, zero);
+    x1 = __msa_add_a_h(z1, zero);
+    SUB2(x0, z_bin0, x1, z_bin1, z_bin0, z_bin1);
+    SUB2(z_bin0, zbin_o_q, z_bin1, zbin_o_q, z_bin0, z_bin1);
+    ILVL_H2_SH(quant0, quant0, quant2, quant2, quant1, quant3);
+    ILVR_H2_SH(quant0, quant0, quant2, quant2, quant0, quant2);
+    ILVL_H2_SH(round0, x0, round1, x1, temp1_h, temp3_h);
+    ILVR_H2_SH(round0, x0, round1, x1, temp0_h, temp2_h);
+    DOTP_SH4_SW(temp0_h, temp1_h, temp2_h, temp3_h, quant0, quant1, quant2,
+                quant3, temp0_w, temp1_w, temp2_w, temp3_w);
+    SRA_4V(temp0_w, temp1_w, temp2_w, temp3_w, 16);
+    PCKEV_H2_SH(temp1_w, temp0_w, temp3_w, temp2_w, temp0_h, temp2_h);
+    LD_SH2(quant_shift, 8, coeff0, coeff1);
+    VSHF_H2_SH(coeff0, coeff1, coeff0, coeff1, zigzag_mask0, zigzag_mask1,
+               quant0, quant2);
+    ILVL_H2_SH(quant0, quant0, quant2, quant2, quant1, quant3);
+    ILVR_H2_SH(quant0, quant0, quant2, quant2, quant0, quant2);
+    ADD2(x0, round0, x1, round1, x0, x1);
+    ILVL_H2_SH(temp0_h, x0, temp2_h, x1, temp1_h, temp3_h);
+    ILVR_H2_SH(temp0_h, x0, temp2_h, x1, temp0_h, temp2_h);
+    DOTP_SH4_SW(temp0_h, temp1_h, temp2_h, temp3_h, quant0, quant1, quant2,
+                quant3, temp0_w, temp1_w, temp2_w, temp3_w);
+    SRA_4V(temp0_w, temp1_w, temp2_w, temp3_w, 16);
+    PCKEV_H2_SH(temp1_w, temp0_w, temp3_w, temp2_w, x0, x1);
+    sign_x0 = x0 ^ sign_z0;
+    sign_x1 = x1 ^ sign_z1;
+    SUB2(sign_x0, sign_z0, sign_x1, sign_z1, sign_x0, sign_x1);
+    for (cnt = 0; cnt < 16; ++cnt)
+    {
+        if (cnt <= 7)
+        {
+            if (boost_temp[0] <= z_bin0[cnt])
+            {
+                if (x0[cnt])
+                {
+                    eob = cnt;
+                    boost_temp = zbin_boost;
+                }
+                else
+                {
+                    boost_temp++;
+                }
+            }
+            else
+            {
+                sign_x0[cnt] = 0;
+                boost_temp++;
+            }
+        }
+        else
+        {
+            if (boost_temp[0] <= z_bin1[cnt - 8])
+            {
+                if (x1[cnt - 8])
+                {
+                    eob = cnt;
+                    boost_temp = zbin_boost;
+                }
+                else
+                {
+                    boost_temp++;
+                }
+            }
+            else
+            {
+                sign_x1[cnt - 8] = 0;
+                boost_temp++;
+            }
+        }
+    }
+
+    VSHF_H2_SH(sign_x0, sign_x1, sign_x0, sign_x1, inv_zig_zag0, inv_zig_zag1,
+               q_coeff0, q_coeff1);
+    ST_SH2(q_coeff0, q_coeff1, q_coeff, 8);
+    LD_SH2(de_quant, 8, de_quant0, de_quant1);
+    MUL2(de_quant0, q_coeff0, de_quant1, q_coeff1, de_quant0, de_quant1);
+    ST_SH2(de_quant0, de_quant1, dq_coeff, 8);
+
+    return (int8_t)(eob + 1);
+}
+
+void vp8_fast_quantize_b_msa(BLOCK *b, BLOCKD *d)
+{
+    int16_t *coeff_ptr = b->coeff;
+    int16_t *zbin_ptr = b->zbin;
+    int16_t *round_ptr = b->round;
+    int16_t *quant_ptr = b->quant_fast;
+    int16_t *qcoeff_ptr = d->qcoeff;
+    int16_t *dqcoeff_ptr = d->dqcoeff;
+    int16_t *dequant_ptr = d->dequant;
+
+    *d->eob = fast_quantize_b_msa(coeff_ptr, zbin_ptr, round_ptr, quant_ptr,
+                                  dequant_ptr, qcoeff_ptr, dqcoeff_ptr);
+}
+
+void vp8_regular_quantize_b_msa(BLOCK *b, BLOCKD *d)
+{
+    int16_t *zbin_boost_ptr = b->zrun_zbin_boost;
+    int16_t *coeff_ptr = b->coeff;
+    int16_t *zbin_ptr = b->zbin;
+    int16_t *round_ptr = b->round;
+    int16_t *quant_ptr = b->quant;
+    int16_t *quant_shift_ptr = b->quant_shift;
+    int16_t *qcoeff_ptr = d->qcoeff;
+    int16_t *dqcoeff_ptr = d->dqcoeff;
+    int16_t *dequant_ptr = d->dequant;
+    int16_t zbin_oq_value = b->zbin_extra;
+
+    *d->eob = exact_regular_quantize_b_msa(zbin_boost_ptr, coeff_ptr,
+                                           zbin_ptr, round_ptr,
+                                           quant_ptr, quant_shift_ptr,
+                                           dequant_ptr, zbin_oq_value,
+                                           qcoeff_ptr, dqcoeff_ptr);
+}