// 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 version of YUV to RGB upsampling functions.

//

// Author: Prashant Patil (prashant.patil@imgtec.com)

#include <string.h>

#include "src/dsp/dsp.h"

#if defined(WEBP_USE_MSA)

#include "src/dsp/msa_macro.h"

#include "src/dsp/yuv.h"

#ifdef FANCY_UPSAMPLING

#define ILVR_UW2(in, out0, out1) do { \

const v8i16 t0 = (v8i16)__msa_ilvr_b((v16i8)zero, (v16i8)in); \

out0 = (v4u32)__msa_ilvr_h((v8i16)zero, t0); \

out1 = (v4u32)__msa_ilvl_h((v8i16)zero, t0); \

} while (0)

#define ILVRL_UW4(in, out0, out1, out2, out3) do { \

v16u8 t0, t1; \

ILVRL_B2_UB(zero, in, t0, t1); \

ILVRL_H2_UW(zero, t0, out0, out1); \

ILVRL_H2_UW(zero, t1, out2, out3); \

} while (0)

#define MULTHI_16(in0, in1, in2, in3, cnst, out0, out1) do { \

const v4i32 const0 = (v4i32)__msa_fill_w(cnst * 256); \

v4u32 temp0, temp1, temp2, temp3; \

MUL4(in0, const0, in1, const0, in2, const0, in3, const0, \

temp0, temp1, temp2, temp3); \

PCKOD_H2_UH(temp1, temp0, temp3, temp2, out0, out1); \

} while (0)

#define MULTHI_8(in0, in1, cnst, out0) do { \

const v4i32 const0 = (v4i32)__msa_fill_w(cnst * 256); \

v4u32 temp0, temp1; \

MUL2(in0, const0, in1, const0, temp0, temp1); \

out0 = (v8u16)__msa_pckod_h((v8i16)temp1, (v8i16)temp0); \

} while (0)

#define CALC_R16(y0, y1, v0, v1, dst) do { \

const v8i16 const_a = (v8i16)__msa_fill_h(14234); \

const v8i16 a0 = __msa_adds_s_h((v8i16)y0, (v8i16)v0); \

const v8i16 a1 = __msa_adds_s_h((v8i16)y1, (v8i16)v1); \

v8i16 b0 = __msa_subs_s_h(a0, const_a); \

v8i16 b1 = __msa_subs_s_h(a1, const_a); \

SRAI_H2_SH(b0, b1, 6); \

CLIP_SH2_0_255(b0, b1); \

dst = (v16u8)__msa_pckev_b((v16i8)b1, (v16i8)b0); \

} while (0)

#define CALC_R8(y0, v0, dst) do { \

const v8i16 const_a = (v8i16)__msa_fill_h(14234); \

const v8i16 a0 = __msa_adds_s_h((v8i16)y0, (v8i16)v0); \

v8i16 b0 = __msa_subs_s_h(a0, const_a); \

b0 = SRAI_H(b0, 6); \

CLIP_SH_0_255(b0); \

dst = (v16u8)__msa_pckev_b((v16i8)b0, (v16i8)b0); \

} while (0)

#define CALC_G16(y0, y1, u0, u1, v0, v1, dst) do { \

const v8i16 const_a = (v8i16)__msa_fill_h(8708); \

v8i16 a0 = __msa_subs_s_h((v8i16)y0, (v8i16)u0); \

v8i16 a1 = __msa_subs_s_h((v8i16)y1, (v8i16)u1); \

const v8i16 b0 = __msa_subs_s_h(a0, (v8i16)v0); \

const v8i16 b1 = __msa_subs_s_h(a1, (v8i16)v1); \

a0 = __msa_adds_s_h(b0, const_a); \

a1 = __msa_adds_s_h(b1, const_a); \

SRAI_H2_SH(a0, a1, 6); \

CLIP_SH2_0_255(a0, a1); \

dst = (v16u8)__msa_pckev_b((v16i8)a1, (v16i8)a0); \

} while (0)

#define CALC_G8(y0, u0, v0, dst) do { \

const v8i16 const_a = (v8i16)__msa_fill_h(8708); \

v8i16 a0 = __msa_subs_s_h((v8i16)y0, (v8i16)u0); \

const v8i16 b0 = __msa_subs_s_h(a0, (v8i16)v0); \

a0 = __msa_adds_s_h(b0, const_a); \

a0 = SRAI_H(a0, 6); \

CLIP_SH_0_255(a0); \

dst = (v16u8)__msa_pckev_b((v16i8)a0, (v16i8)a0); \

} while (0)

#define CALC_B16(y0, y1, u0, u1, dst) do { \

const v8u16 const_a = (v8u16)__msa_fill_h(17685); \

const v8u16 a0 = __msa_adds_u_h((v8u16)y0, u0); \

const v8u16 a1 = __msa_adds_u_h((v8u16)y1, u1); \

v8u16 b0 = __msa_subs_u_h(a0, const_a); \

v8u16 b1 = __msa_subs_u_h(a1, const_a); \

SRAI_H2_UH(b0, b1, 6); \

CLIP_UH2_0_255(b0, b1); \

dst = (v16u8)__msa_pckev_b((v16i8)b1, (v16i8)b0); \

} while (0)

#define CALC_B8(y0, u0, dst) do { \

const v8u16 const_a = (v8u16)__msa_fill_h(17685); \

const v8u16 a0 = __msa_adds_u_h((v8u16)y0, u0); \

v8u16 b0 = __msa_subs_u_h(a0, const_a); \

b0 = SRAI_H(b0, 6); \

CLIP_UH_0_255(b0); \

dst = (v16u8)__msa_pckev_b((v16i8)b0, (v16i8)b0); \

} while (0)

#define CALC_RGB16(y, u, v, R, G, B) do { \

const v16u8 zero = { 0 }; \

v8u16 y0, y1, u0, u1, v0, v1; \

v4u32 p0, p1, p2, p3; \

const v16u8 in_y = LD_UB(y); \

const v16u8 in_u = LD_UB(u); \

const v16u8 in_v = LD_UB(v); \

ILVRL_UW4(in_y, p0, p1, p2, p3); \

MULTHI_16(p0, p1, p2, p3, 19077, y0, y1); \

ILVRL_UW4(in_v, p0, p1, p2, p3); \

MULTHI_16(p0, p1, p2, p3, 26149, v0, v1); \

CALC_R16(y0, y1, v0, v1, R); \

MULTHI_16(p0, p1, p2, p3, 13320, v0, v1); \

ILVRL_UW4(in_u, p0, p1, p2, p3); \

MULTHI_16(p0, p1, p2, p3, 6419, u0, u1); \

CALC_G16(y0, y1, u0, u1, v0, v1, G); \

MULTHI_16(p0, p1, p2, p3, 33050, u0, u1); \

CALC_B16(y0, y1, u0, u1, B); \

} while (0)

#define CALC_RGB8(y, u, v, R, G, B) do { \

const v16u8 zero = { 0 }; \

v8u16 y0, u0, v0; \

v4u32 p0, p1; \

const v16u8 in_y = LD_UB(y); \

const v16u8 in_u = LD_UB(u); \

const v16u8 in_v = LD_UB(v); \

ILVR_UW2(in_y, p0, p1); \

MULTHI_8(p0, p1, 19077, y0); \

ILVR_UW2(in_v, p0, p1); \

MULTHI_8(p0, p1, 26149, v0); \

CALC_R8(y0, v0, R); \

MULTHI_8(p0, p1, 13320, v0); \

ILVR_UW2(in_u, p0, p1); \

MULTHI_8(p0, p1, 6419, u0); \

CALC_G8(y0, u0, v0, G); \

MULTHI_8(p0, p1, 33050, u0); \

CALC_B8(y0, u0, B); \

} while (0)

#define STORE16_3(a0, a1, a2, dst) do { \

const v16u8 mask0 = { 0, 1, 16, 2, 3, 17, 4, 5, 18, 6, 7, 19, \

8, 9, 20, 10 }; \

const v16u8 mask1 = { 0, 21, 1, 2, 22, 3, 4, 23, 5, 6, 24, 7, \

8, 25, 9, 10 }; \

const v16u8 mask2 = { 26, 0, 1, 27, 2, 3, 28, 4, 5, 29, 6, 7, \

30, 8, 9, 31 }; \

v16u8 out0, out1, out2, tmp0, tmp1, tmp2; \

ILVRL_B2_UB(a1, a0, tmp0, tmp1); \

out0 = VSHF_UB(tmp0, a2, mask0); \

tmp2 = SLDI_UB(tmp1, tmp0, 11); \

out1 = VSHF_UB(tmp2, a2, mask1); \

tmp2 = SLDI_UB(tmp1, tmp1, 6); \

out2 = VSHF_UB(tmp2, a2, mask2); \

ST_UB(out0, dst + 0); \

ST_UB(out1, dst + 16); \

ST_UB(out2, dst + 32); \

} while (0)

#define STORE8_3(a0, a1, a2, dst) do { \

int64_t out_m; \

const v16u8 mask0 = { 0, 1, 16, 2, 3, 17, 4, 5, 18, 6, 7, 19, \

8, 9, 20, 10 }; \

const v16u8 mask1 = { 11, 21, 12, 13, 22, 14, 15, 23, \

255, 255, 255, 255, 255, 255, 255, 255 }; \

const v16u8 tmp0 = (v16u8)__msa_ilvr_b((v16i8)a1, (v16i8)a0); \

v16u8 out0, out1; \

VSHF_B2_UB(tmp0, a2, tmp0, a2, mask0, mask1, out0, out1); \

ST_UB(out0, dst); \

out_m = __msa_copy_s_d((v2i64)out1, 0); \

SD(out_m, dst + 16); \

} while (0)

#define STORE16_4(a0, a1, a2, a3, dst) do { \

v16u8 tmp0, tmp1, tmp2, tmp3; \

v16u8 out0, out1, out2, out3; \

ILVRL_B2_UB(a1, a0, tmp0, tmp1); \

ILVRL_B2_UB(a3, a2, tmp2, tmp3); \

ILVRL_H2_UB(tmp2, tmp0, out0, out1); \

ILVRL_H2_UB(tmp3, tmp1, out2, out3); \

ST_UB(out0, dst + 0); \

ST_UB(out1, dst + 16); \

ST_UB(out2, dst + 32); \

ST_UB(out3, dst + 48); \

} while (0)

#define STORE8_4(a0, a1, a2, a3, dst) do { \

v16u8 tmp0, tmp1, tmp2, tmp3; \

ILVR_B2_UB(a1, a0, a3, a2, tmp0, tmp1); \

ILVRL_H2_UB(tmp1, tmp0, tmp2, tmp3); \

ST_UB(tmp2, dst + 0); \

ST_UB(tmp3, dst + 16); \

} while (0)

#define STORE2_16(a0, a1, dst) do { \

v16u8 out0, out1; \

ILVRL_B2_UB(a1, a0, out0, out1); \

ST_UB(out0, dst + 0); \

ST_UB(out1, dst + 16); \

} while (0)

#define STORE2_8(a0, a1, dst) do { \

const v16u8 out0 = (v16u8)__msa_ilvr_b((v16i8)a1, (v16i8)a0); \

ST_UB(out0, dst); \

} while (0)

#define CALC_RGBA4444(y, u, v, out0, out1, N, dst) do { \

CALC_RGB##N(y, u, v, R, G, B); \

tmp0 = ANDI_B(R, 0xf0); \

tmp1 = SRAI_B(G, 4); \

RG = tmp0 | tmp1; \

tmp0 = ANDI_B(B, 0xf0); \

BA = ORI_B(tmp0, 0x0f); \

STORE2_##N(out0, out1, dst); \

} while (0)

#define CALC_RGB565(y, u, v, out0, out1, N, dst) do { \

CALC_RGB##N(y, u, v, R, G, B); \

tmp0 = ANDI_B(R, 0xf8); \

tmp1 = SRAI_B(G, 5); \

RG = tmp0 | tmp1; \

tmp0 = SLLI_B(G, 3); \

tmp1 = ANDI_B(tmp0, 0xe0); \

tmp0 = SRAI_B(B, 3); \

GB = tmp0 | tmp1; \

STORE2_##N(out0, out1, dst); \

} while (0)

static WEBP_INLINE int Clip8(int v) {

return v < 0 ? 0 : v > 255 ? 255 : v;

}

static void YuvToRgb(int y, int u, int v, uint8_t* const rgb) {

const int y1 = MultHi(y, 19077);

const int r1 = y1 + MultHi(v, 26149) - 14234;

const int g1 = y1 - MultHi(u, 6419) - MultHi(v, 13320) + 8708;

const int b1 = y1 + MultHi(u, 33050) - 17685;

rgb[0] = Clip8(r1 >> 6);

rgb[1] = Clip8(g1 >> 6);

rgb[2] = Clip8(b1 >> 6);

}

static void YuvToBgr(int y, int u, int v, uint8_t* const bgr) {

const int y1 = MultHi(y, 19077);

const int r1 = y1 + MultHi(v, 26149) - 14234;

const int g1 = y1 - MultHi(u, 6419) - MultHi(v, 13320) + 8708;

const int b1 = y1 + MultHi(u, 33050) - 17685;

bgr[0] = Clip8(b1 >> 6);

bgr[1] = Clip8(g1 >> 6);

bgr[2] = Clip8(r1 >> 6);

}

#if !defined(WEBP_REDUCE_CSP)

static void YuvToRgb565(int y, int u, int v, uint8_t* const rgb) {

const int y1 = MultHi(y, 19077);

const int r1 = y1 + MultHi(v, 26149) - 14234;

const int g1 = y1 - MultHi(u, 6419) - MultHi(v, 13320) + 8708;

const int b1 = y1 + MultHi(u, 33050) - 17685;

const int r = Clip8(r1 >> 6);

const int g = Clip8(g1 >> 6);

const int b = Clip8(b1 >> 6);

const int rg = (r & 0xf8) | (g >> 5);

const int gb = ((g << 3) & 0xe0) | (b >> 3);

#if (WEBP_SWAP_16BIT_CSP == 1)

rgb[0] = gb;

rgb[1] = rg;

#else

rgb[0] = rg;

rgb[1] = gb;

#endif

}

static void YuvToRgba4444(int y, int u, int v, uint8_t* const argb) {

const int y1 = MultHi(y, 19077);

const int r1 = y1 + MultHi(v, 26149) - 14234;

const int g1 = y1 - MultHi(u, 6419) - MultHi(v, 13320) + 8708;

const int b1 = y1 + MultHi(u, 33050) - 17685;

const int r = Clip8(r1 >> 6);

const int g = Clip8(g1 >> 6);

const int b = Clip8(b1 >> 6);

const int rg = (r & 0xf0) | (g >> 4);

const int ba = (b & 0xf0) | 0x0f; // overwrite the lower 4 bits

#if (WEBP_SWAP_16BIT_CSP == 1)

argb[0] = ba;

argb[1] = rg;

#else

argb[0] = rg;

argb[1] = ba;

#endif

}

static void YuvToArgb(uint8_t y, uint8_t u, uint8_t v, uint8_t* const argb) {

argb[0] = 0xff;

YuvToRgb(y, u, v, argb + 1);

}

#endif // WEBP_REDUCE_CSP

static void YuvToBgra(uint8_t y, uint8_t u, uint8_t v, uint8_t* const bgra) {

YuvToBgr(y, u, v, bgra);

bgra[3] = 0xff;

}

static void YuvToRgba(uint8_t y, uint8_t u, uint8_t v, uint8_t* const rgba) {

YuvToRgb(y, u, v, rgba);

rgba[3] = 0xff;

}

#if !defined(WEBP_REDUCE_CSP)

static void YuvToRgbLine(const uint8_t* y, const uint8_t* u,

const uint8_t* v, uint8_t* dst, int length) {

v16u8 R, G, B;

while (length >= 16) {

CALC_RGB16(y, u, v, R, G, B);

STORE16_3(R, G, B, dst);

y += 16;

u += 16;

v += 16;

dst += 16 * 3;

length -= 16;

}

if (length > 8) {

uint8_t temp[3 * 16] = { 0 };

memcpy(temp, y, length * sizeof(*temp));

CALC_RGB16(temp, u, v, R, G, B);

STORE16_3(R, G, B, temp);

memcpy(dst, temp, length * 3 * sizeof(*dst));

} else if (length > 0) {

uint8_t temp[3 * 8] = { 0 };

memcpy(temp, y, length * sizeof(*temp));

CALC_RGB8(temp, u, v, R, G, B);

STORE8_3(R, G, B, temp);

memcpy(dst, temp, length * 3 * sizeof(*dst));

}

}

static void YuvToBgrLine(const uint8_t* y, const uint8_t* u,

const uint8_t* v, uint8_t* dst, int length) {

v16u8 R, G, B;

while (length >= 16) {

CALC_RGB16(y, u, v, R, G, B);

STORE16_3(B, G, R, dst);

y += 16;

u += 16;

v += 16;

dst += 16 * 3;

length -= 16;

}

if (length > 8) {

uint8_t temp[3 * 16] = { 0 };

memcpy(temp, y, length * sizeof(*temp));

CALC_RGB16(temp, u, v, R, G, B);

STORE16_3(B, G, R, temp);

memcpy(dst, temp, length * 3 * sizeof(*dst));

} else if (length > 0) {

uint8_t temp[3 * 8] = { 0 };

memcpy(temp, y, length * sizeof(*temp));

CALC_RGB8(temp, u, v, R, G, B);

STORE8_3(B, G, R, temp);

memcpy(dst, temp, length * 3 * sizeof(*dst));

}

}

#endif // WEBP_REDUCE_CSP

static void YuvToRgbaLine(const uint8_t* y, const uint8_t* u,

const uint8_t* v, uint8_t* dst, int length) {

v16u8 R, G, B;

const v16u8 A = (v16u8)__msa_ldi_b(ALPHAVAL);

while (length >= 16) {

CALC_RGB16(y, u, v, R, G, B);

STORE16_4(R, G, B, A, dst);

y += 16;

u += 16;

v += 16;

dst += 16 * 4;

length -= 16;

}

if (length > 8) {

uint8_t temp[4 * 16] = { 0 };

memcpy(temp, y, length * sizeof(*temp));

CALC_RGB16(&temp[0], u, v, R, G, B);

STORE16_4(R, G, B, A, temp);

memcpy(dst, temp, length * 4 * sizeof(*dst));

} else if (length > 0) {

uint8_t temp[4 * 8] = { 0 };

memcpy(temp, y, length * sizeof(*temp));

CALC_RGB8(temp, u, v, R, G, B);

STORE8_4(R, G, B, A, temp);

memcpy(dst, temp, length * 4 * sizeof(*dst));

}

}

static void YuvToBgraLine(const uint8_t* y, const uint8_t* u,

const uint8_t* v, uint8_t* dst, int length) {

v16u8 R, G, B;

const v16u8 A = (v16u8)__msa_ldi_b(ALPHAVAL);

while (length >= 16) {

CALC_RGB16(y, u, v, R, G, B);

STORE16_4(B, G, R, A, dst);

y += 16;

u += 16;

v += 16;

dst += 16 * 4;

length -= 16;

}

if (length > 8) {

uint8_t temp[4 * 16] = { 0 };

memcpy(temp, y, length * sizeof(*temp));

CALC_RGB16(temp, u, v, R, G, B);

STORE16_4(B, G, R, A, temp);

memcpy(dst, temp, length * 4 * sizeof(*dst));

} else if (length > 0) {

uint8_t temp[4 * 8] = { 0 };

memcpy(temp, y, length * sizeof(*temp));

CALC_RGB8(temp, u, v, R, G, B);

STORE8_4(B, G, R, A, temp);

memcpy(dst, temp, length * 4 * sizeof(*dst));

}

}

#if !defined(WEBP_REDUCE_CSP)

static void YuvToArgbLine(const uint8_t* y, const uint8_t* u,

const uint8_t* v, uint8_t* dst, int length) {

v16u8 R, G, B;

const v16u8 A = (v16u8)__msa_ldi_b(ALPHAVAL);

while (length >= 16) {

CALC_RGB16(y, u, v, R, G, B);

STORE16_4(A, R, G, B, dst);

y += 16;

u += 16;

v += 16;

dst += 16 * 4;

length -= 16;

}

if (length > 8) {

uint8_t temp[4 * 16] = { 0 };

memcpy(temp, y, length * sizeof(*temp));

CALC_RGB16(temp, u, v, R, G, B);

STORE16_4(A, R, G, B, temp);

memcpy(dst, temp, length * 4 * sizeof(*dst));

} else if (length > 0) {

uint8_t temp[4 * 8] = { 0 };

memcpy(temp, y, length * sizeof(*temp));

CALC_RGB8(temp, u, v, R, G, B);

STORE8_4(A, R, G, B, temp);

memcpy(dst, temp, length * 4 * sizeof(*dst));

}

}

static void YuvToRgba4444Line(const uint8_t* y, const uint8_t* u,

const uint8_t* v, uint8_t* dst, int length) {

v16u8 R, G, B, RG, BA, tmp0, tmp1;

while (length >= 16) {

#if (WEBP_SWAP_16BIT_CSP == 1)

CALC_RGBA4444(y, u, v, BA, RG, 16, dst);

#else

CALC_RGBA4444(y, u, v, RG, BA, 16, dst);

#endif

y += 16;

u += 16;

v += 16;

dst += 16 * 2;

length -= 16;

}

if (length > 8) {

uint8_t temp[2 * 16] = { 0 };

memcpy(temp, y, length * sizeof(*temp));

#if (WEBP_SWAP_16BIT_CSP == 1)

CALC_RGBA4444(temp, u, v, BA, RG, 16, temp);

#else

CALC_RGBA4444(temp, u, v, RG, BA, 16, temp);

#endif

memcpy(dst, temp, length * 2 * sizeof(*dst));

} else if (length > 0) {

uint8_t temp[2 * 8] = { 0 };

memcpy(temp, y, length * sizeof(*temp));

#if (WEBP_SWAP_16BIT_CSP == 1)

CALC_RGBA4444(temp, u, v, BA, RG, 8, temp);

#else

CALC_RGBA4444(temp, u, v, RG, BA, 8, temp);

#endif

memcpy(dst, temp, length * 2 * sizeof(*dst));

}

}

static void YuvToRgb565Line(const uint8_t* y, const uint8_t* u,

const uint8_t* v, uint8_t* dst, int length) {

v16u8 R, G, B, RG, GB, tmp0, tmp1;

while (length >= 16) {

#if (WEBP_SWAP_16BIT_CSP == 1)

CALC_RGB565(y, u, v, GB, RG, 16, dst);

#else

CALC_RGB565(y, u, v, RG, GB, 16, dst);

#endif

y += 16;

u += 16;

v += 16;

dst += 16 * 2;

length -= 16;

}

if (length > 8) {

uint8_t temp[2 * 16] = { 0 };

memcpy(temp, y, length * sizeof(*temp));

#if (WEBP_SWAP_16BIT_CSP == 1)

CALC_RGB565(temp, u, v, GB, RG, 16, temp);

#else

CALC_RGB565(temp, u, v, RG, GB, 16, temp);

#endif

memcpy(dst, temp, length * 2 * sizeof(*dst));

} else if (length > 0) {

uint8_t temp[2 * 8] = { 0 };

memcpy(temp, y, length * sizeof(*temp));

#if (WEBP_SWAP_16BIT_CSP == 1)

CALC_RGB565(temp, u, v, GB, RG, 8, temp);

#else

CALC_RGB565(temp, u, v, RG, GB, 8, temp);

#endif

memcpy(dst, temp, length * 2 * sizeof(*dst));

}

}

#endif // WEBP_REDUCE_CSP

#define UPSAMPLE_32PIXELS(a, b, c, d) do { \

v16u8 s = __msa_aver_u_b(a, d); \

v16u8 t = __msa_aver_u_b(b, c); \

const v16u8 st = s ^ t; \

v16u8 ad = a ^ d; \

v16u8 bc = b ^ c; \

v16u8 t0 = ad | bc; \

v16u8 t1 = t0 | st; \

v16u8 t2 = ANDI_B(t1, 1); \

v16u8 t3 = __msa_aver_u_b(s, t); \

const v16u8 k = t3 - t2; \

v16u8 diag1, diag2; \

AVER_UB2_UB(t, k, s, k, t0, t1); \

bc = bc & st; \

ad = ad & st; \

t = t ^ k; \

s = s ^ k; \

t2 = bc | t; \

t3 = ad | s; \

t2 = ANDI_B(t2, 1); \

t3 = ANDI_B(t3, 1); \

SUB2(t0, t2, t1, t3, diag1, diag2); \

AVER_UB2_UB(a, diag1, b, diag2, t0, t1); \

ILVRL_B2_UB(t1, t0, a, b); \

if (pbot_y != NULL) { \

AVER_UB2_UB(c, diag2, d, diag1, t0, t1); \

ILVRL_B2_UB(t1, t0, c, d); \

} \

} while (0)

#define UPSAMPLE_FUNC(FUNC_NAME, FUNC, XSTEP) \

static void FUNC_NAME(const uint8_t* top_y, const uint8_t* bot_y, \

const uint8_t* top_u, const uint8_t* top_v, \

const uint8_t* cur_u, const uint8_t* cur_v, \

uint8_t* top_dst, uint8_t* bot_dst, int len) \

{ \

int size = (len - 1) >> 1; \

uint8_t temp_u[64]; \

uint8_t temp_v[64]; \

const uint32_t tl_uv = ((top_u[0]) | ((top_v[0]) << 16)); \

const uint32_t l_uv = ((cur_u[0]) | ((cur_v[0]) << 16)); \

const uint32_t uv0 = (3 * tl_uv + l_uv + 0x00020002u) >> 2; \

const uint8_t* ptop_y = &top_y[1]; \

uint8_t *ptop_dst = top_dst + XSTEP; \

const uint8_t* pbot_y = &bot_y[1]; \

uint8_t *pbot_dst = bot_dst + XSTEP; \

\

FUNC(top_y[0], uv0 & 0xff, (uv0 >> 16), top_dst); \

if (bot_y != NULL) { \

const uint32_t uv1 = (3 * l_uv + tl_uv + 0x00020002u) >> 2; \

FUNC(bot_y[0], uv1 & 0xff, (uv1 >> 16), bot_dst); \

} \

while (size >= 16) { \

v16u8 tu0, tu1, tv0, tv1, cu0, cu1, cv0, cv1; \

LD_UB2(top_u, 1, tu0, tu1); \

LD_UB2(cur_u, 1, cu0, cu1); \

LD_UB2(top_v, 1, tv0, tv1); \

LD_UB2(cur_v, 1, cv0, cv1); \

UPSAMPLE_32PIXELS(tu0, tu1, cu0, cu1); \

UPSAMPLE_32PIXELS(tv0, tv1, cv0, cv1); \

ST_UB4(tu0, tu1, cu0, cu1, &temp_u[0], 16); \

ST_UB4(tv0, tv1, cv0, cv1, &temp_v[0], 16); \

FUNC##Line(ptop_y, &temp_u[ 0], &temp_v[0], ptop_dst, 32); \

if (bot_y != NULL) { \

FUNC##Line(pbot_y, &temp_u[32], &temp_v[32], pbot_dst, 32); \

} \

ptop_y += 32; \

pbot_y += 32; \

ptop_dst += XSTEP * 32; \

pbot_dst += XSTEP * 32; \

top_u += 16; \

top_v += 16; \

cur_u += 16; \

cur_v += 16; \

size -= 16; \

} \

if (size > 0) { \

v16u8 tu0, tu1, tv0, tv1, cu0, cu1, cv0, cv1; \

memcpy(&temp_u[ 0], top_u, 17 * sizeof(uint8_t)); \

memcpy(&temp_u[32], cur_u, 17 * sizeof(uint8_t)); \

memcpy(&temp_v[ 0], top_v, 17 * sizeof(uint8_t)); \

memcpy(&temp_v[32], cur_v, 17 * sizeof(uint8_t)); \

LD_UB2(&temp_u[ 0], 1, tu0, tu1); \

LD_UB2(&temp_u[32], 1, cu0, cu1); \

LD_UB2(&temp_v[ 0], 1, tv0, tv1); \

LD_UB2(&temp_v[32], 1, cv0, cv1); \

UPSAMPLE_32PIXELS(tu0, tu1, cu0, cu1); \

UPSAMPLE_32PIXELS(tv0, tv1, cv0, cv1); \

ST_UB4(tu0, tu1, cu0, cu1, &temp_u[0], 16); \

ST_UB4(tv0, tv1, cv0, cv1, &temp_v[0], 16); \

FUNC##Line(ptop_y, &temp_u[ 0], &temp_v[0], ptop_dst, size * 2); \

if (bot_y != NULL) { \

FUNC##Line(pbot_y, &temp_u[32], &temp_v[32], pbot_dst, size * 2); \

} \

top_u += size; \

top_v += size; \

cur_u += size; \

cur_v += size; \

} \

if (!(len & 1)) { \

const uint32_t t0 = ((top_u[0]) | ((top_v[0]) << 16)); \

const uint32_t c0 = ((cur_u[0]) | ((cur_v[0]) << 16)); \

const uint32_t tmp0 = (3 * t0 + c0 + 0x00020002u) >> 2; \

FUNC(top_y[len - 1], tmp0 & 0xff, (tmp0 >> 16), \

top_dst + (len - 1) * XSTEP); \

if (bot_y != NULL) { \

const uint32_t tmp1 = (3 * c0 + t0 + 0x00020002u) >> 2; \

FUNC(bot_y[len - 1], tmp1 & 0xff, (tmp1 >> 16), \

bot_dst + (len - 1) * XSTEP); \

} \

} \

}

UPSAMPLE_FUNC(UpsampleRgbaLinePair, YuvToRgba, 4)

UPSAMPLE_FUNC(UpsampleBgraLinePair, YuvToBgra, 4)

#if !defined(WEBP_REDUCE_CSP)

UPSAMPLE_FUNC(UpsampleRgbLinePair, YuvToRgb, 3)

UPSAMPLE_FUNC(UpsampleBgrLinePair, YuvToBgr, 3)

UPSAMPLE_FUNC(UpsampleArgbLinePair, YuvToArgb, 4)

UPSAMPLE_FUNC(UpsampleRgba4444LinePair, YuvToRgba4444, 2)

UPSAMPLE_FUNC(UpsampleRgb565LinePair, YuvToRgb565, 2)

#endif // WEBP_REDUCE_CSP

//------------------------------------------------------------------------------

// Entry point

extern WebPUpsampleLinePairFunc WebPUpsamplers[/* MODE_LAST */];

extern void WebPInitUpsamplersMSA(void);

WEBP_TSAN_IGNORE_FUNCTION void WebPInitUpsamplersMSA(void) {

WebPUpsamplers[MODE_RGBA] = UpsampleRgbaLinePair;

WebPUpsamplers[MODE_BGRA] = UpsampleBgraLinePair;

WebPUpsamplers[MODE_rgbA] = UpsampleRgbaLinePair;

WebPUpsamplers[MODE_bgrA] = UpsampleBgraLinePair;

#if !defined(WEBP_REDUCE_CSP)

WebPUpsamplers[MODE_RGB] = UpsampleRgbLinePair;

WebPUpsamplers[MODE_BGR] = UpsampleBgrLinePair;

WebPUpsamplers[MODE_ARGB] = UpsampleArgbLinePair;

WebPUpsamplers[MODE_Argb] = UpsampleArgbLinePair;

WebPUpsamplers[MODE_RGB_565] = UpsampleRgb565LinePair;

WebPUpsamplers[MODE_RGBA_4444] = UpsampleRgba4444LinePair;

WebPUpsamplers[MODE_rgbA_4444] = UpsampleRgba4444LinePair;

#endif // WEBP_REDUCE_CSP

}

#endif // FANCY_UPSAMPLING

#endif // WEBP_USE_MSA

#if !(defined(FANCY_UPSAMPLING) && defined(WEBP_USE_MSA))

WEBP_DSP_INIT_STUB(WebPInitUpsamplersMSA)

#endif