148 lines
5.5 KiB
C
148 lines
5.5 KiB
C
// 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
|