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Add MSA optimized color transform functions

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We add the following MSA optimized color transform functions:
- TransformColor
- SubtractGreenFromBlueAndRed

Change-Id: Ib182d2b5faa7191f503ce70f0dfde0ac89402fd3
This commit is contained in:
Parag Salasakar 2016-07-18 16:32:36 +05:30 committed by Pascal Massimino
parent 3f4042b52a
commit cb19dbc1a4
7 changed files with 158 additions and 0 deletions
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1
Android.mk
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@ -92,6 +92,7 @@ dsp_enc_srcs := \
src/dsp/lossless_enc.c \
src/dsp/lossless_enc_mips32.c \
src/dsp/lossless_enc_mips_dsp_r2.c \
src/dsp/lossless_enc_msa.c \
src/dsp/lossless_enc_neon.$(NEON) \
src/dsp/lossless_enc_sse2.c \
src/dsp/lossless_enc_sse41.c \

1
Makefile.vc
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@ -240,6 +240,7 @@ DSP_ENC_OBJS = \
$(DIROBJ)\dsp\lossless_enc.obj \
$(DIROBJ)\dsp\lossless_enc_mips32.obj \
$(DIROBJ)\dsp\lossless_enc_mips_dsp_r2.obj \
$(DIROBJ)\dsp\lossless_enc_msa.obj \
$(DIROBJ)\dsp\lossless_enc_neon.obj \
$(DIROBJ)\dsp\lossless_enc_sse2.obj \
$(DIROBJ)\dsp\lossless_enc_sse41.obj \

1
build.gradle
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@ -172,6 +172,7 @@ model {
include "lossless_enc.c"
include "lossless_enc_mips32.c"
include "lossless_enc_mips_dsp_r2.c"
include "lossless_enc_msa.c"
include "lossless_enc_neon.$NEON"
include "lossless_enc_sse2.c"
include "lossless_enc_sse41.c"

1
makefile.unix
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@ -184,6 +184,7 @@ DSP_ENC_OBJS = \
src/dsp/lossless_enc.o \
src/dsp/lossless_enc_mips32.o \
src/dsp/lossless_enc_mips_dsp_r2.o \
src/dsp/lossless_enc_msa.o \
src/dsp/lossless_enc_neon.o \
src/dsp/lossless_enc_sse2.o \
src/dsp/lossless_enc_sse41.o \

1
src/dsp/Makefile.am
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@ -114,6 +114,7 @@ libwebpdsp_neon_la_LIBADD = libwebpdspdecode_neon.la
libwebpdsp_msa_la_SOURCES =
libwebpdsp_msa_la_SOURCES += enc_msa.c
libwebpdsp_msa_la_SOURCES += lossless_enc_msa.c
libwebpdsp_msa_la_CPPFLAGS = $(libwebpdsp_la_CPPFLAGS)
libwebpdsp_msa_la_CFLAGS = $(AM_CFLAGS)
libwebpdsp_msa_la_LIBADD = libwebpdspdecode_msa.la

6
src/dsp/lossless_enc.c
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@ -1376,6 +1376,7 @@ extern void VP8LEncDspInitSSE41(void);
extern void VP8LEncDspInitNEON(void);
extern void VP8LEncDspInitMIPS32(void);
extern void VP8LEncDspInitMIPSdspR2(void);
extern void VP8LEncDspInitMSA(void);
static volatile VP8CPUInfo lossless_enc_last_cpuinfo_used =
(VP8CPUInfo)&lossless_enc_last_cpuinfo_used;
@ -1431,6 +1432,11 @@ WEBP_TSAN_IGNORE_FUNCTION void VP8LEncDspInit(void) {
if (VP8GetCPUInfo(kMIPSdspR2)) {
VP8LEncDspInitMIPSdspR2();
}
#endif
#if defined(WEBP_USE_MSA)
if (VP8GetCPUInfo(kMSA)) {
VP8LEncDspInitMSA();
}
#endif
}
lossless_enc_last_cpuinfo_used = VP8GetCPUInfo;

147
src/dsp/lossless_enc_msa.c Normal file
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@ -0,0 +1,147 @@
// Copyright 2016 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING 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.
// -----------------------------------------------------------------------------
//
// MSA variant of Image transform methods for lossless encoder.
//
// Authors: Prashant Patil (Prashant.Patil@imgtec.com)
#include "./dsp.h"
#if defined(WEBP_USE_MSA)
#include "./lossless.h"
#include "./msa_macro.h"
#define TRANSFORM_COLOR_8(src0, src1, dst0, dst1, c0, c1, mask0, mask1) do { \
v8i16 g0, g1, t0, t1, t2, t3; \
v4i32 t4, t5; \
VSHF_B2_SH(src0, src0, src1, src1, mask0, mask0, g0, g1); \
DOTP_SB2_SH(g0, g1, c0, c0, t0, t1); \
SRAI_H2_SH(t0, t1, 5); \
t0 = __msa_subv_h((v8i16)src0, t0); \
t1 = __msa_subv_h((v8i16)src1, t1); \
t4 = __msa_srli_w((v4i32)src0, 16); \
t5 = __msa_srli_w((v4i32)src1, 16); \
DOTP_SB2_SH(t4, t5, c1, c1, t2, t3); \
SRAI_H2_SH(t2, t3, 5); \
SUB2(t0, t2, t1, t3, t0, t1); \
VSHF_B2_UB(src0, t0, src1, t1, mask1, mask1, dst0, dst1); \
} while (0)
#define TRANSFORM_COLOR_4(src, dst, c0, c1, mask0, mask1) do { \
const v16i8 g0 = VSHF_SB(src, src, mask0); \
v8i16 t0 = __msa_dotp_s_h(c0, g0); \
v8i16 t1; \
v4i32 t2; \
t0 = SRAI_H(t0, 5); \
t0 = __msa_subv_h((v8i16)src, t0); \
t2 = __msa_srli_w((v4i32)src, 16); \
t1 = __msa_dotp_s_h(c1, (v16i8)t2); \
t1 = SRAI_H(t1, 5); \
t0 = t0 - t1; \
dst = VSHF_UB(src, t0, mask1); \
} while (0)
static void TransformColor(const VP8LMultipliers* const m, uint32_t* data,
int num_pixels) {
v16u8 src0, dst0;
const v16i8 g2br = (v16i8)__msa_fill_w(m->green_to_blue_ |
(m->green_to_red_ << 16));
const v16i8 r2b = (v16i8)__msa_fill_w(m->red_to_blue_);
const v16u8 mask0 = { 1, 255, 1, 255, 5, 255, 5, 255, 9, 255, 9, 255,
13, 255, 13, 255 };
const v16u8 mask1 = { 16, 1, 18, 3, 20, 5, 22, 7, 24, 9, 26, 11,
28, 13, 30, 15 };
while (num_pixels >= 8) {
v16u8 src1, dst1;
LD_UB2(data, 4, src0, src1);
TRANSFORM_COLOR_8(src0, src1, dst0, dst1, g2br, r2b, mask0, mask1);
ST_UB2(dst0, dst1, data, 4);
data += 8;
num_pixels -= 8;
}
if (num_pixels > 0) {
if (num_pixels >= 4) {
src0 = LD_UB(data);
TRANSFORM_COLOR_4(src0, dst0, g2br, r2b, mask0, mask1);
ST_UB(dst0, data);
data += 4;
num_pixels -= 4;
}
if (num_pixels > 0) {
src0 = LD_UB(data);
TRANSFORM_COLOR_4(src0, dst0, g2br, r2b, mask0, mask1);
if (num_pixels == 3) {
const uint64_t pix_d = __msa_copy_s_d((v2i64)dst0, 0);
const uint32_t pix_w = __msa_copy_s_w((v4i32)dst0, 2);
SD(pix_d, data + 0);
SW(pix_w, data + 2);
} else if (num_pixels == 2) {
const uint64_t pix_d = __msa_copy_s_d((v2i64)dst0, 0);
SD(pix_d, data);
} else {
const uint32_t pix_w = __msa_copy_s_w((v4i32)dst0, 0);
SW(pix_w, data);
}
}
}
}
static void SubtractGreenFromBlueAndRed(uint32_t* argb_data, int num_pixels) {
int i;
uint8_t* ptemp_data = (uint8_t*)argb_data;
v16u8 src0, dst0, tmp0;
const v16u8 mask = { 1, 255, 1, 255, 5, 255, 5, 255, 9, 255, 9, 255,
13, 255, 13, 255 };
while (num_pixels >= 8) {
v16u8 src1, dst1, tmp1;
LD_UB2(ptemp_data, 16, src0, src1);
VSHF_B2_UB(src0, src1, src1, src0, mask, mask, tmp0, tmp1);
SUB2(src0, tmp0, src1, tmp1, dst0, dst1);
ST_UB2(dst0, dst1, ptemp_data, 16);
ptemp_data += 8 * 4;
num_pixels -= 8;
}
if (num_pixels > 0) {
if (num_pixels >= 4) {
src0 = LD_UB(ptemp_data);
tmp0 = VSHF_UB(src0, src0, mask);
dst0 = src0 - tmp0;
ST_UB(dst0, ptemp_data);
ptemp_data += 4 * 4;
num_pixels -= 4;
}
for (i = 0; i < num_pixels; i++) {
const uint8_t b = ptemp_data[0];
const uint8_t g = ptemp_data[1];
const uint8_t r = ptemp_data[2];
ptemp_data[0] = (b - g) & 0xff;
ptemp_data[2] = (r - g) & 0xff;
ptemp_data += 4;
}
}
}
//------------------------------------------------------------------------------
// Entry point
extern void VP8LEncDspInitMSA(void);
WEBP_TSAN_IGNORE_FUNCTION void VP8LEncDspInitMSA(void) {
VP8LSubtractGreenFromBlueAndRed = SubtractGreenFromBlueAndRed;
VP8LTransformColor = TransformColor;
}
#else // !WEBP_USE_MSA
WEBP_DSP_INIT_STUB(VP8LEncDspInitMSA)
#endif // WEBP_USE_MSA