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ppc: Add vpx_idct4x4_16_add_vsx

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Change-Id: Id2673eece32027fb245919c7a5c81994a4a19fd8
This commit is contained in:
Alexandra Hájková 2017-06-10 14:44:46 +00:00 committed by James Zern
parent 27e37e1a8a
commit d8c277030c
4 changed files with 114 additions and 1 deletions
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7
test/dct_test.cc
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@ -553,6 +553,13 @@ INSTANTIATE_TEST_CASE_P(
#endif // !CONFIG_VP9_HIGHBITDEPTH
#endif // HAVE_MSA
#if HAVE_VSX && !CONFIG_VP9_HIGHBITDEPTH && !CONFIG_EMULATE_HARDWARE
INSTANTIATE_TEST_CASE_P(VSX, TransDCT,
::testing::Values(make_tuple(&vpx_fdct4x4_c,
&vpx_idct4x4_16_add_vsx, 4,
0, VPX_BITS_8)));
#endif // HAVE_VSX && !CONFIG_VP9_HIGHBITDEPTH && !CONFIG_EMULATE_HARDWARE
class TransHT : public TransTestBase, public ::testing::TestWithParam<HtParam> {
public:
TransHT() {

104
vpx_dsp/ppc/inv_txfm_vsx.c Normal file
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@ -0,0 +1,104 @@
/*
* 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 <math.h>
#include <stdlib.h>
#include <string.h>
#include "vpx_dsp/ppc/types_vsx.h"
#include "./vpx_dsp_rtcd.h"
#include "vpx_dsp/inv_txfm.h"
static int16x8_t cospi8_v = { 15137, 15137, 15137, 15137,
15137, 15137, 15137, 15137 };
static int16x8_t cospi16_v = { 11585, 11585, 11585, 11585,
11585, 11585, 11585, 11585 };
static int16x8_t cospi24_v = { 6270, 6270, 6270, 6270, 6270, 6270, 6270, 6270 };
#define ROUND_SHIFT_INIT \
const int32x4_t shift = vec_sl(vec_splat_s32(1), vec_splat_u32(13)); \
const uint32x4_t shift14 = vec_splat_u32(14);
#define DCT_CONST_ROUND_SHIFT(vec) vec = vec_sra(vec_add(vec, shift), shift14);
#define PIXEL_ADD_INIT \
int16x8_t add8 = vec_splat_s16(8); \
uint16x8_t shift4 = vec_splat_u16(4);
#define PIXEL_ADD(out, in) out = vec_sra(vec_add(in, add8), shift4);
#define IDCT4(in0, in1, out0, out1) \
t0 = vec_add(in0, in1); \
t1 = vec_sub(in0, in1); \
tmp16_0 = vec_mergeh(t0, t1); \
temp1 = vec_sra(vec_add(vec_mule(tmp16_0, cospi16_v), shift), shift14); \
temp2 = vec_sra(vec_add(vec_mulo(tmp16_0, cospi16_v), shift), shift14); \
\
tmp16_0 = vec_mergel(in0, in1); \
temp3 = vec_sub(vec_mule(tmp16_0, cospi24_v), vec_mulo(tmp16_0, cospi8_v)); \
DCT_CONST_ROUND_SHIFT(temp3); \
temp4 = vec_add(vec_mule(tmp16_0, cospi8_v), vec_mulo(tmp16_0, cospi24_v)); \
DCT_CONST_ROUND_SHIFT(temp4); \
\
step0 = vec_packs(temp1, temp2); \
step1 = vec_packs(temp4, temp3); \
out0 = vec_add(step0, step1); \
out1 = vec_sub(step0, step1); \
out1 = vec_perm(out1, out1, mask0);
void vpx_idct4x4_16_add_vsx(const tran_low_t *input, uint8_t *dest,
int stride) {
int32x4_t temp1, temp2, temp3, temp4;
int16x8_t step0, step1, tmp16_0, tmp16_1, t_out0, t_out1;
uint8x16_t mask0 = { 0x8, 0x9, 0xA, 0xB, 0xC, 0xD, 0xE, 0xF,
0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7 };
uint8x16_t mask1 = { 0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7,
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17 };
int16x8_t v0 = vec_vsx_ld(0, input);
int16x8_t v1 = vec_vsx_ld(16, input);
int16x8_t t0 = vec_mergeh(v0, v1);
int16x8_t t1 = vec_mergel(v0, v1);
uint8x16_t dest0 = vec_vsx_ld(0, dest);
uint8x16_t dest1 = vec_vsx_ld(stride, dest);
uint8x16_t dest2 = vec_vsx_ld(2 * stride, dest);
uint8x16_t dest3 = vec_vsx_ld(3 * stride, dest);
uint8x16_t zerov = vec_splat_u8(0);
int16x8_t d_u0 = (int16x8_t)vec_mergeh(dest0, zerov);
int16x8_t d_u1 = (int16x8_t)vec_mergeh(dest1, zerov);
int16x8_t d_u2 = (int16x8_t)vec_mergeh(dest2, zerov);
int16x8_t d_u3 = (int16x8_t)vec_mergeh(dest3, zerov);
uint8x16_t output_v;
uint8_t tmp_dest[16];
ROUND_SHIFT_INIT
PIXEL_ADD_INIT;
v0 = vec_mergeh(t0, t1);
v1 = vec_mergel(t0, t1);
IDCT4(v0, v1, t_out0, t_out1);
// transpose
t0 = vec_mergeh(t_out0, t_out1);
t1 = vec_mergel(t_out0, t_out1);
v0 = vec_mergeh(t0, t1);
v1 = vec_mergel(t0, t1);
IDCT4(v0, v1, t_out0, t_out1);
PIXEL_ADD(v0, t_out0);
PIXEL_ADD(v1, t_out1);
tmp16_0 = vec_add(vec_perm(d_u0, d_u1, mask1), v0);
tmp16_1 = vec_add(vec_perm(d_u2, d_u3, mask1), v1);
output_v = vec_packsu(tmp16_0, tmp16_1);
vec_vsx_st(output_v, 0, tmp_dest);
for (int i = 0; i < 4; i++)
for (int j = 0; j < 4; j++) dest[j * stride + i] = tmp_dest[j * 4 + i];
}

2
vpx_dsp/vpx_dsp.mk
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@ -215,6 +215,8 @@ DSP_SRCS-$(HAVE_SSSE3) += x86/inv_txfm_ssse3.c
DSP_SRCS-$(HAVE_NEON_ASM) += arm/save_reg_neon$(ASM)
DSP_SRCS-$(HAVE_VSX) += ppc/inv_txfm_vsx.c
ifneq ($(CONFIG_VP9_HIGHBITDEPTH),yes)
DSP_SRCS-$(HAVE_MSA) += mips/inv_txfm_msa.h
DSP_SRCS-$(HAVE_MSA) += mips/idct4x4_msa.c

2
vpx_dsp/vpx_dsp_rtcd_defs.pl
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@ -584,7 +584,7 @@ add_proto qw/void vpx_iwht4x4_1_add/, "const tran_low_t *input, uint8_t *dest, i
if (vpx_config("CONFIG_EMULATE_HARDWARE") ne "yes") {
# Note that there are more specializations appended when CONFIG_VP9_HIGHBITDEPTH is off.
specialize qw/vpx_idct4x4_16_add neon sse2/;
specialize qw/vpx_idct4x4_16_add neon sse2 vsx/;
specialize qw/vpx_idct4x4_1_add neon sse2/;
specialize qw/vpx_idct8x8_64_add neon sse2/;
specialize qw/vpx_idct8x8_12_add neon sse2 ssse3/;