// Copyright 2014 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.

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

//

// MIPS version of speed-critical encoding functions.

//

// Author(s): Djordje Pesut (djordje.pesut@imgtec.com)

// Jovan Zelincevic (jovan.zelincevic@imgtec.com)

// Slobodan Prijic (slobodan.prijic@imgtec.com)

#include "src/dsp/dsp.h"

#if defined(WEBP_USE_MIPS32)

#include "src/dsp/mips_macro.h"

#include "src/enc/vp8i_enc.h"

#include "src/enc/cost_enc.h"

static const int kC1 = 20091 + (1 << 16);

static const int kC2 = 35468;

// macro for one vertical pass in ITransformOne

// MUL macro inlined

// temp0..temp15 holds tmp[0]..tmp[15]

// A..D - offsets in bytes to load from in buffer

// TEMP0..TEMP3 - registers for corresponding tmp elements

// TEMP4..TEMP5 - temporary registers

#define VERTICAL_PASS(A, B, C, D, TEMP4, TEMP0, TEMP1, TEMP2, TEMP3) \

"lh %[temp16], " #A "(%[temp20]) \n\t" \

"lh %[temp18], " #B "(%[temp20]) \n\t" \

"lh %[temp17], " #C "(%[temp20]) \n\t" \

"lh %[temp19], " #D "(%[temp20]) \n\t" \

"addu %[" #TEMP4 "], %[temp16], %[temp18] \n\t" \

"subu %[temp16], %[temp16], %[temp18] \n\t" \

"mul %[" #TEMP0 "], %[temp17], %[kC2] \n\t" \

"mul %[temp18], %[temp19], %[kC1] \n\t" \

"mul %[temp17], %[temp17], %[kC1] \n\t" \

"mul %[temp19], %[temp19], %[kC2] \n\t" \

"sra %[" #TEMP0 "], %[" #TEMP0 "], 16 \n\n" \

"sra %[temp18], %[temp18], 16 \n\n" \

"sra %[temp17], %[temp17], 16 \n\n" \

"sra %[temp19], %[temp19], 16 \n\n" \

"subu %[" #TEMP2 "], %[" #TEMP0 "], %[temp18] \n\t" \

"addu %[" #TEMP3 "], %[temp17], %[temp19] \n\t" \

"addu %[" #TEMP0 "], %[" #TEMP4 "], %[" #TEMP3 "] \n\t" \

"addu %[" #TEMP1 "], %[temp16], %[" #TEMP2 "] \n\t" \

"subu %[" #TEMP2 "], %[temp16], %[" #TEMP2 "] \n\t" \

"subu %[" #TEMP3 "], %[" #TEMP4 "], %[" #TEMP3 "] \n\t"

// macro for one horizontal pass in ITransformOne

// MUL and STORE macros inlined

// a = clip_8b(a) is replaced with: a = max(a, 0); a = min(a, 255)

// temp0..temp15 holds tmp[0]..tmp[15]

// A - offset in bytes to load from ref and store to dst buffer

// TEMP0, TEMP4, TEMP8 and TEMP12 - registers for corresponding tmp elements

#define HORIZONTAL_PASS(A, TEMP0, TEMP4, TEMP8, TEMP12) \

"addiu %[" #TEMP0 "], %[" #TEMP0 "], 4 \n\t" \

"addu %[temp16], %[" #TEMP0 "], %[" #TEMP8 "] \n\t" \

"subu %[temp17], %[" #TEMP0 "], %[" #TEMP8 "] \n\t" \

"mul %[" #TEMP0 "], %[" #TEMP4 "], %[kC2] \n\t" \

"mul %[" #TEMP8 "], %[" #TEMP12 "], %[kC1] \n\t" \

"mul %[" #TEMP4 "], %[" #TEMP4 "], %[kC1] \n\t" \

"mul %[" #TEMP12 "], %[" #TEMP12 "], %[kC2] \n\t" \

"sra %[" #TEMP0 "], %[" #TEMP0 "], 16 \n\t" \

"sra %[" #TEMP8 "], %[" #TEMP8 "], 16 \n\t" \

"sra %[" #TEMP4 "], %[" #TEMP4 "], 16 \n\t" \

"sra %[" #TEMP12 "], %[" #TEMP12 "], 16 \n\t" \

"subu %[temp18], %[" #TEMP0 "], %[" #TEMP8 "] \n\t" \

"addu %[temp19], %[" #TEMP4 "], %[" #TEMP12 "] \n\t" \

"addu %[" #TEMP0 "], %[temp16], %[temp19] \n\t" \

"addu %[" #TEMP4 "], %[temp17], %[temp18] \n\t" \

"subu %[" #TEMP8 "], %[temp17], %[temp18] \n\t" \

"subu %[" #TEMP12 "], %[temp16], %[temp19] \n\t" \

"lw %[temp20], 0(%[args]) \n\t" \

"sra %[" #TEMP0 "], %[" #TEMP0 "], 3 \n\t" \

"sra %[" #TEMP4 "], %[" #TEMP4 "], 3 \n\t" \

"sra %[" #TEMP8 "], %[" #TEMP8 "], 3 \n\t" \

"sra %[" #TEMP12 "], %[" #TEMP12 "], 3 \n\t" \

"lbu %[temp16], 0+" XSTR(BPS) "*" #A "(%[temp20]) \n\t" \

"lbu %[temp17], 1+" XSTR(BPS) "*" #A "(%[temp20]) \n\t" \

"lbu %[temp18], 2+" XSTR(BPS) "*" #A "(%[temp20]) \n\t" \

"lbu %[temp19], 3+" XSTR(BPS) "*" #A "(%[temp20]) \n\t" \

"addu %[" #TEMP0 "], %[temp16], %[" #TEMP0 "] \n\t" \

"addu %[" #TEMP4 "], %[temp17], %[" #TEMP4 "] \n\t" \

"addu %[" #TEMP8 "], %[temp18], %[" #TEMP8 "] \n\t" \

"addu %[" #TEMP12 "], %[temp19], %[" #TEMP12 "] \n\t" \

"slt %[temp16], %[" #TEMP0 "], $zero \n\t" \

"slt %[temp17], %[" #TEMP4 "], $zero \n\t" \

"slt %[temp18], %[" #TEMP8 "], $zero \n\t" \

"slt %[temp19], %[" #TEMP12 "], $zero \n\t" \

"movn %[" #TEMP0 "], $zero, %[temp16] \n\t" \

"movn %[" #TEMP4 "], $zero, %[temp17] \n\t" \

"movn %[" #TEMP8 "], $zero, %[temp18] \n\t" \

"movn %[" #TEMP12 "], $zero, %[temp19] \n\t" \

"addiu %[temp20], $zero, 255 \n\t" \

"slt %[temp16], %[" #TEMP0 "], %[temp20] \n\t" \

"slt %[temp17], %[" #TEMP4 "], %[temp20] \n\t" \

"slt %[temp18], %[" #TEMP8 "], %[temp20] \n\t" \

"slt %[temp19], %[" #TEMP12 "], %[temp20] \n\t" \

"movz %[" #TEMP0 "], %[temp20], %[temp16] \n\t" \

"movz %[" #TEMP4 "], %[temp20], %[temp17] \n\t" \

"lw %[temp16], 8(%[args]) \n\t" \

"movz %[" #TEMP8 "], %[temp20], %[temp18] \n\t" \

"movz %[" #TEMP12 "], %[temp20], %[temp19] \n\t" \

"sb %[" #TEMP0 "], 0+" XSTR(BPS) "*" #A "(%[temp16]) \n\t" \

"sb %[" #TEMP4 "], 1+" XSTR(BPS) "*" #A "(%[temp16]) \n\t" \

"sb %[" #TEMP8 "], 2+" XSTR(BPS) "*" #A "(%[temp16]) \n\t" \

"sb %[" #TEMP12 "], 3+" XSTR(BPS) "*" #A "(%[temp16]) \n\t"

// Does one or two inverse transforms.

static WEBP_INLINE void ITransformOne_MIPS32(const uint8_t* ref,

const int16_t* in,

uint8_t* dst) {

int temp0, temp1, temp2, temp3, temp4, temp5, temp6;

int temp7, temp8, temp9, temp10, temp11, temp12, temp13;

int temp14, temp15, temp16, temp17, temp18, temp19, temp20;

const int* args[3] = {(const int*)ref, (const int*)in, (const int*)dst};

__asm__ volatile(

"lw %[temp20], 4(%[args]) \n\t"

VERTICAL_PASS(0, 16, 8, 24, temp4, temp0, temp1, temp2, temp3)

VERTICAL_PASS(2, 18, 10, 26, temp8, temp4, temp5, temp6, temp7)

VERTICAL_PASS(4, 20, 12, 28, temp12, temp8, temp9, temp10, temp11)

VERTICAL_PASS(6, 22, 14, 30, temp20, temp12, temp13, temp14, temp15)

HORIZONTAL_PASS(0, temp0, temp4, temp8, temp12)

HORIZONTAL_PASS(1, temp1, temp5, temp9, temp13)

HORIZONTAL_PASS(2, temp2, temp6, temp10, temp14)

HORIZONTAL_PASS(3, temp3, temp7, temp11, temp15)

: [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp2]"=&r"(temp2),

[temp3]"=&r"(temp3), [temp4]"=&r"(temp4), [temp5]"=&r"(temp5),

[temp6]"=&r"(temp6), [temp7]"=&r"(temp7), [temp8]"=&r"(temp8),

[temp9]"=&r"(temp9), [temp10]"=&r"(temp10), [temp11]"=&r"(temp11),

[temp12]"=&r"(temp12), [temp13]"=&r"(temp13), [temp14]"=&r"(temp14),

[temp15]"=&r"(temp15), [temp16]"=&r"(temp16), [temp17]"=&r"(temp17),

[temp18]"=&r"(temp18), [temp19]"=&r"(temp19), [temp20]"=&r"(temp20)

: [args]"r"(args), [kC1]"r"(kC1), [kC2]"r"(kC2)

: "memory", "hi", "lo"

);

}

static void ITransform_MIPS32(const uint8_t* ref, const int16_t* in,

uint8_t* dst, int do_two) {

ITransformOne_MIPS32(ref, in, dst);

if (do_two) {

ITransformOne_MIPS32(ref + 4, in + 16, dst + 4);

}

}

#undef VERTICAL_PASS

#undef HORIZONTAL_PASS

// macro for one pass through for loop in QuantizeBlock

// QUANTDIV macro inlined

// J - offset in bytes (kZigzag[n] * 2)

// K - offset in bytes (kZigzag[n] * 4)

// N - offset in bytes (n * 2)

#define QUANTIZE_ONE(J, K, N) \

"lh %[temp0], " #J "(%[ppin]) \n\t" \

"lhu %[temp1], " #J "(%[ppsharpen]) \n\t" \

"lw %[temp2], " #K "(%[ppzthresh]) \n\t" \

"sra %[sign], %[temp0], 15 \n\t" \

"xor %[coeff], %[temp0], %[sign] \n\t" \

"subu %[coeff], %[coeff], %[sign] \n\t" \

"addu %[coeff], %[coeff], %[temp1] \n\t" \

"slt %[temp4], %[temp2], %[coeff] \n\t" \

"addiu %[temp5], $zero, 0 \n\t" \

"addiu %[level], $zero, 0 \n\t" \

"beqz %[temp4], 2f \n\t" \

"lhu %[temp1], " #J "(%[ppiq]) \n\t" \

"lw %[temp2], " #K "(%[ppbias]) \n\t" \

"lhu %[temp3], " #J "(%[ppq]) \n\t" \

"mul %[level], %[coeff], %[temp1] \n\t" \

"addu %[level], %[level], %[temp2] \n\t" \

"sra %[level], %[level], 17 \n\t" \

"slt %[temp4], %[max_level], %[level] \n\t" \

"movn %[level], %[max_level], %[temp4] \n\t" \

"xor %[level], %[level], %[sign] \n\t" \

"subu %[level], %[level], %[sign] \n\t" \

"mul %[temp5], %[level], %[temp3] \n\t" \

"2: \n\t" \

"sh %[temp5], " #J "(%[ppin]) \n\t" \

"sh %[level], " #N "(%[pout]) \n\t"

static int QuantizeBlock_MIPS32(int16_t in[16], int16_t out[16],

const VP8Matrix* const mtx) {

int temp0, temp1, temp2, temp3, temp4, temp5;

int sign, coeff, level, i;

int max_level = MAX_LEVEL;

int16_t* ppin = &in[0];

int16_t* pout = &out[0];

const uint16_t* ppsharpen = &mtx->sharpen_[0];

const uint32_t* ppzthresh = &mtx->zthresh_[0];

const uint16_t* ppq = &mtx->q_[0];

const uint16_t* ppiq = &mtx->iq_[0];

const uint32_t* ppbias = &mtx->bias_[0];

__asm__ volatile(

QUANTIZE_ONE( 0, 0, 0)

QUANTIZE_ONE( 2, 4, 2)

QUANTIZE_ONE( 8, 16, 4)

QUANTIZE_ONE(16, 32, 6)

QUANTIZE_ONE(10, 20, 8)

QUANTIZE_ONE( 4, 8, 10)

QUANTIZE_ONE( 6, 12, 12)

QUANTIZE_ONE(12, 24, 14)

QUANTIZE_ONE(18, 36, 16)

QUANTIZE_ONE(24, 48, 18)

QUANTIZE_ONE(26, 52, 20)

QUANTIZE_ONE(20, 40, 22)

QUANTIZE_ONE(14, 28, 24)

QUANTIZE_ONE(22, 44, 26)

QUANTIZE_ONE(28, 56, 28)

QUANTIZE_ONE(30, 60, 30)

: [temp0]"=&r"(temp0), [temp1]"=&r"(temp1),

[temp2]"=&r"(temp2), [temp3]"=&r"(temp3),

[temp4]"=&r"(temp4), [temp5]"=&r"(temp5),

[sign]"=&r"(sign), [coeff]"=&r"(coeff),

[level]"=&r"(level)

: [pout]"r"(pout), [ppin]"r"(ppin),

[ppiq]"r"(ppiq), [max_level]"r"(max_level),

[ppbias]"r"(ppbias), [ppzthresh]"r"(ppzthresh),

[ppsharpen]"r"(ppsharpen), [ppq]"r"(ppq)

: "memory", "hi", "lo"

);

// moved out from macro to increase possibility for earlier breaking

for (i = 15; i >= 0; i--) {

if (out[i]) return 1;

}

return 0;

}

static int Quantize2Blocks_MIPS32(int16_t in[32], int16_t out[32],

const VP8Matrix* const mtx) {

int nz;

nz = QuantizeBlock_MIPS32(in + 0 * 16, out + 0 * 16, mtx) << 0;

nz |= QuantizeBlock_MIPS32(in + 1 * 16, out + 1 * 16, mtx) << 1;

return nz;

}

#undef QUANTIZE_ONE

// macro for one horizontal pass in Disto4x4 (TTransform)

// two calls of function TTransform are merged into single one

// A - offset in bytes to load from a and b buffers

// E..H - offsets in bytes to store first results to tmp buffer

// E1..H1 - offsets in bytes to store second results to tmp buffer

#define HORIZONTAL_PASS(A, E, F, G, H, E1, F1, G1, H1) \

"lbu %[temp0], 0+" XSTR(BPS) "*" #A "(%[a]) \n\t" \

"lbu %[temp1], 1+" XSTR(BPS) "*" #A "(%[a]) \n\t" \

"lbu %[temp2], 2+" XSTR(BPS) "*" #A "(%[a]) \n\t" \

"lbu %[temp3], 3+" XSTR(BPS) "*" #A "(%[a]) \n\t" \

"lbu %[temp4], 0+" XSTR(BPS) "*" #A "(%[b]) \n\t" \

"lbu %[temp5], 1+" XSTR(BPS) "*" #A "(%[b]) \n\t" \

"lbu %[temp6], 2+" XSTR(BPS) "*" #A "(%[b]) \n\t" \

"lbu %[temp7], 3+" XSTR(BPS) "*" #A "(%[b]) \n\t" \

"addu %[temp8], %[temp0], %[temp2] \n\t" \

"subu %[temp0], %[temp0], %[temp2] \n\t" \

"addu %[temp2], %[temp1], %[temp3] \n\t" \

"subu %[temp1], %[temp1], %[temp3] \n\t" \

"addu %[temp3], %[temp4], %[temp6] \n\t" \

"subu %[temp4], %[temp4], %[temp6] \n\t" \

"addu %[temp6], %[temp5], %[temp7] \n\t" \

"subu %[temp5], %[temp5], %[temp7] \n\t" \

"addu %[temp7], %[temp8], %[temp2] \n\t" \

"subu %[temp2], %[temp8], %[temp2] \n\t" \

"addu %[temp8], %[temp0], %[temp1] \n\t" \

"subu %[temp0], %[temp0], %[temp1] \n\t" \

"addu %[temp1], %[temp3], %[temp6] \n\t" \

"subu %[temp3], %[temp3], %[temp6] \n\t" \

"addu %[temp6], %[temp4], %[temp5] \n\t" \

"subu %[temp4], %[temp4], %[temp5] \n\t" \

"sw %[temp7], " #E "(%[tmp]) \n\t" \

"sw %[temp2], " #H "(%[tmp]) \n\t" \

"sw %[temp8], " #F "(%[tmp]) \n\t" \

"sw %[temp0], " #G "(%[tmp]) \n\t" \

"sw %[temp1], " #E1 "(%[tmp]) \n\t" \

"sw %[temp3], " #H1 "(%[tmp]) \n\t" \

"sw %[temp6], " #F1 "(%[tmp]) \n\t" \

"sw %[temp4], " #G1 "(%[tmp]) \n\t"

// macro for one vertical pass in Disto4x4 (TTransform)

// two calls of function TTransform are merged into single one

// since only one accu is available in mips32r1 instruction set

// first is done second call of function TTransform and after

// that first one.

// const int sum1 = TTransform(a, w);

// const int sum2 = TTransform(b, w);

// return abs(sum2 - sum1) >> 5;

// (sum2 - sum1) is calculated with madds (sub2) and msubs (sub1)

// A..D - offsets in bytes to load first results from tmp buffer

// A1..D1 - offsets in bytes to load second results from tmp buffer

// E..H - offsets in bytes to load from w buffer

#define VERTICAL_PASS(A, B, C, D, A1, B1, C1, D1, E, F, G, H) \

"lw %[temp0], " #A1 "(%[tmp]) \n\t" \

"lw %[temp1], " #C1 "(%[tmp]) \n\t" \

"lw %[temp2], " #B1 "(%[tmp]) \n\t" \

"lw %[temp3], " #D1 "(%[tmp]) \n\t" \

"addu %[temp8], %[temp0], %[temp1] \n\t" \

"subu %[temp0], %[temp0], %[temp1] \n\t" \

"addu %[temp1], %[temp2], %[temp3] \n\t" \

"subu %[temp2], %[temp2], %[temp3] \n\t" \

"addu %[temp3], %[temp8], %[temp1] \n\t" \

"subu %[temp8], %[temp8], %[temp1] \n\t" \

"addu %[temp1], %[temp0], %[temp2] \n\t" \

"subu %[temp0], %[temp0], %[temp2] \n\t" \

"sra %[temp4], %[temp3], 31 \n\t" \

"sra %[temp5], %[temp1], 31 \n\t" \

"sra %[temp6], %[temp0], 31 \n\t" \

"sra %[temp7], %[temp8], 31 \n\t" \

"xor %[temp3], %[temp3], %[temp4] \n\t" \

"xor %[temp1], %[temp1], %[temp5] \n\t" \

"xor %[temp0], %[temp0], %[temp6] \n\t" \

"xor %[temp8], %[temp8], %[temp7] \n\t" \

"subu %[temp3], %[temp3], %[temp4] \n\t" \

"subu %[temp1], %[temp1], %[temp5] \n\t" \

"subu %[temp0], %[temp0], %[temp6] \n\t" \

"subu %[temp8], %[temp8], %[temp7] \n\t" \

"lhu %[temp4], " #E "(%[w]) \n\t" \

"lhu %[temp5], " #F "(%[w]) \n\t" \

"lhu %[temp6], " #G "(%[w]) \n\t" \

"lhu %[temp7], " #H "(%[w]) \n\t" \

"madd %[temp4], %[temp3] \n\t" \

"madd %[temp5], %[temp1] \n\t" \

"madd %[temp6], %[temp0] \n\t" \

"madd %[temp7], %[temp8] \n\t" \

"lw %[temp0], " #A "(%[tmp]) \n\t" \

"lw %[temp1], " #C "(%[tmp]) \n\t" \

"lw %[temp2], " #B "(%[tmp]) \n\t" \

"lw %[temp3], " #D "(%[tmp]) \n\t" \

"addu %[temp8], %[temp0], %[temp1] \n\t" \

"subu %[temp0], %[temp0], %[temp1] \n\t" \

"addu %[temp1], %[temp2], %[temp3] \n\t" \

"subu %[temp2], %[temp2], %[temp3] \n\t" \

"addu %[temp3], %[temp8], %[temp1] \n\t" \

"subu %[temp1], %[temp8], %[temp1] \n\t" \

"addu %[temp8], %[temp0], %[temp2] \n\t" \

"subu %[temp0], %[temp0], %[temp2] \n\t" \

"sra %[temp2], %[temp3], 31 \n\t" \

"xor %[temp3], %[temp3], %[temp2] \n\t" \

"subu %[temp3], %[temp3], %[temp2] \n\t" \

"msub %[temp4], %[temp3] \n\t" \

"sra %[temp2], %[temp8], 31 \n\t" \

"sra %[temp3], %[temp0], 31 \n\t" \

"sra %[temp4], %[temp1], 31 \n\t" \

"xor %[temp8], %[temp8], %[temp2] \n\t" \

"xor %[temp0], %[temp0], %[temp3] \n\t" \

"xor %[temp1], %[temp1], %[temp4] \n\t" \

"subu %[temp8], %[temp8], %[temp2] \n\t" \

"subu %[temp0], %[temp0], %[temp3] \n\t" \

"subu %[temp1], %[temp1], %[temp4] \n\t" \

"msub %[temp5], %[temp8] \n\t" \

"msub %[temp6], %[temp0] \n\t" \

"msub %[temp7], %[temp1] \n\t"

static int Disto4x4_MIPS32(const uint8_t* const a, const uint8_t* const b,

const uint16_t* const w) {

int tmp[32];

int temp0, temp1, temp2, temp3, temp4, temp5, temp6, temp7, temp8;

__asm__ volatile(

HORIZONTAL_PASS(0, 0, 4, 8, 12, 64, 68, 72, 76)

HORIZONTAL_PASS(1, 16, 20, 24, 28, 80, 84, 88, 92)

HORIZONTAL_PASS(2, 32, 36, 40, 44, 96, 100, 104, 108)

HORIZONTAL_PASS(3, 48, 52, 56, 60, 112, 116, 120, 124)

"mthi $zero \n\t"

"mtlo $zero \n\t"

VERTICAL_PASS( 0, 16, 32, 48, 64, 80, 96, 112, 0, 8, 16, 24)

VERTICAL_PASS( 4, 20, 36, 52, 68, 84, 100, 116, 2, 10, 18, 26)

VERTICAL_PASS( 8, 24, 40, 56, 72, 88, 104, 120, 4, 12, 20, 28)

VERTICAL_PASS(12, 28, 44, 60, 76, 92, 108, 124, 6, 14, 22, 30)

"mflo %[temp0] \n\t"

"sra %[temp1], %[temp0], 31 \n\t"

"xor %[temp0], %[temp0], %[temp1] \n\t"

"subu %[temp0], %[temp0], %[temp1] \n\t"

"sra %[temp0], %[temp0], 5 \n\t"

: [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp2]"=&r"(temp2),

[temp3]"=&r"(temp3), [temp4]"=&r"(temp4), [temp5]"=&r"(temp5),

[temp6]"=&r"(temp6), [temp7]"=&r"(temp7), [temp8]"=&r"(temp8)

: [a]"r"(a), [b]"r"(b), [w]"r"(w), [tmp]"r"(tmp)

: "memory", "hi", "lo"

);

return temp0;

}

#undef VERTICAL_PASS

#undef HORIZONTAL_PASS

static int Disto16x16_MIPS32(const uint8_t* const a, const uint8_t* const b,

const uint16_t* const w) {

int D = 0;

int x, y;

for (y = 0; y < 16 * BPS; y += 4 * BPS) {

for (x = 0; x < 16; x += 4) {

D += Disto4x4_MIPS32(a + x + y, b + x + y, w);

}

}

return D;

}

// macro for one horizontal pass in FTransform

// temp0..temp15 holds tmp[0]..tmp[15]

// A - offset in bytes to load from src and ref buffers

// TEMP0..TEMP3 - registers for corresponding tmp elements

#define HORIZONTAL_PASS(A, TEMP0, TEMP1, TEMP2, TEMP3) \

"lw %[" #TEMP1 "], 0(%[args]) \n\t" \

"lw %[" #TEMP2 "], 4(%[args]) \n\t" \

"lbu %[temp16], 0+" XSTR(BPS) "*" #A "(%[" #TEMP1 "]) \n\t" \

"lbu %[temp17], 0+" XSTR(BPS) "*" #A "(%[" #TEMP2 "]) \n\t" \

"lbu %[temp18], 1+" XSTR(BPS) "*" #A "(%[" #TEMP1 "]) \n\t" \

"lbu %[temp19], 1+" XSTR(BPS) "*" #A "(%[" #TEMP2 "]) \n\t" \

"subu %[temp20], %[temp16], %[temp17] \n\t" \

"lbu %[temp16], 2+" XSTR(BPS) "*" #A "(%[" #TEMP1 "]) \n\t" \

"lbu %[temp17], 2+" XSTR(BPS) "*" #A "(%[" #TEMP2 "]) \n\t" \

"subu %[" #TEMP0 "], %[temp18], %[temp19] \n\t" \

"lbu %[temp18], 3+" XSTR(BPS) "*" #A "(%[" #TEMP1 "]) \n\t" \

"lbu %[temp19], 3+" XSTR(BPS) "*" #A "(%[" #TEMP2 "]) \n\t" \

"subu %[" #TEMP1 "], %[temp16], %[temp17] \n\t" \

"subu %[" #TEMP2 "], %[temp18], %[temp19] \n\t" \

"addu %[" #TEMP3 "], %[temp20], %[" #TEMP2 "] \n\t" \

"subu %[" #TEMP2 "], %[temp20], %[" #TEMP2 "] \n\t" \

"addu %[temp20], %[" #TEMP0 "], %[" #TEMP1 "] \n\t" \

"subu %[" #TEMP0 "], %[" #TEMP0 "], %[" #TEMP1 "] \n\t" \

"mul %[temp16], %[" #TEMP2 "], %[c5352] \n\t" \

"mul %[temp17], %[" #TEMP2 "], %[c2217] \n\t" \

"mul %[temp18], %[" #TEMP0 "], %[c5352] \n\t" \

"mul %[temp19], %[" #TEMP0 "], %[c2217] \n\t" \

"addu %[" #TEMP1 "], %[" #TEMP3 "], %[temp20] \n\t" \

"subu %[temp20], %[" #TEMP3 "], %[temp20] \n\t" \

"sll %[" #TEMP0 "], %[" #TEMP1 "], 3 \n\t" \

"sll %[" #TEMP2 "], %[temp20], 3 \n\t" \

"addiu %[temp16], %[temp16], 1812 \n\t" \

"addiu %[temp17], %[temp17], 937 \n\t" \

"addu %[temp16], %[temp16], %[temp19] \n\t" \

"subu %[temp17], %[temp17], %[temp18] \n\t" \

"sra %[" #TEMP1 "], %[temp16], 9 \n\t" \

"sra %[" #TEMP3 "], %[temp17], 9 \n\t"

// macro for one vertical pass in FTransform

// temp0..temp15 holds tmp[0]..tmp[15]

// A..D - offsets in bytes to store to out buffer

// TEMP0, TEMP4, TEMP8 and TEMP12 - registers for corresponding tmp elements

#define VERTICAL_PASS(A, B, C, D, TEMP0, TEMP4, TEMP8, TEMP12) \

"addu %[temp16], %[" #TEMP0 "], %[" #TEMP12 "] \n\t" \

"subu %[temp19], %[" #TEMP0 "], %[" #TEMP12 "] \n\t" \

"addu %[temp17], %[" #TEMP4 "], %[" #TEMP8 "] \n\t" \

"subu %[temp18], %[" #TEMP4 "], %[" #TEMP8 "] \n\t" \

"mul %[" #TEMP8 "], %[temp19], %[c2217] \n\t" \

"mul %[" #TEMP12 "], %[temp18], %[c2217] \n\t" \

"mul %[" #TEMP4 "], %[temp19], %[c5352] \n\t" \

"mul %[temp18], %[temp18], %[c5352] \n\t" \

"addiu %[temp16], %[temp16], 7 \n\t" \

"addu %[" #TEMP0 "], %[temp16], %[temp17] \n\t" \

"sra %[" #TEMP0 "], %[" #TEMP0 "], 4 \n\t" \

"addu %[" #TEMP12 "], %[" #TEMP12 "], %[" #TEMP4 "] \n\t" \

"subu %[" #TEMP4 "], %[temp16], %[temp17] \n\t" \

"sra %[" #TEMP4 "], %[" #TEMP4 "], 4 \n\t" \

"addiu %[" #TEMP8 "], %[" #TEMP8 "], 30000 \n\t" \

"addiu %[" #TEMP12 "], %[" #TEMP12 "], 12000 \n\t" \

"addiu %[" #TEMP8 "], %[" #TEMP8 "], 21000 \n\t" \

"subu %[" #TEMP8 "], %[" #TEMP8 "], %[temp18] \n\t" \

"sra %[" #TEMP12 "], %[" #TEMP12 "], 16 \n\t" \

"sra %[" #TEMP8 "], %[" #TEMP8 "], 16 \n\t" \

"addiu %[temp16], %[" #TEMP12 "], 1 \n\t" \

"movn %[" #TEMP12 "], %[temp16], %[temp19] \n\t" \

"sh %[" #TEMP0 "], " #A "(%[temp20]) \n\t" \

"sh %[" #TEMP4 "], " #C "(%[temp20]) \n\t" \

"sh %[" #TEMP8 "], " #D "(%[temp20]) \n\t" \

"sh %[" #TEMP12 "], " #B "(%[temp20]) \n\t"

static void FTransform_MIPS32(const uint8_t* src, const uint8_t* ref,

int16_t* out) {

int temp0, temp1, temp2, temp3, temp4, temp5, temp6, temp7, temp8;

int temp9, temp10, temp11, temp12, temp13, temp14, temp15, temp16;

int temp17, temp18, temp19, temp20;

const int c2217 = 2217;

const int c5352 = 5352;

const int* const args[3] =

{ (const int*)src, (const int*)ref, (const int*)out };

__asm__ volatile(

HORIZONTAL_PASS(0, temp0, temp1, temp2, temp3)

HORIZONTAL_PASS(1, temp4, temp5, temp6, temp7)

HORIZONTAL_PASS(2, temp8, temp9, temp10, temp11)

HORIZONTAL_PASS(3, temp12, temp13, temp14, temp15)

"lw %[temp20], 8(%[args]) \n\t"

VERTICAL_PASS(0, 8, 16, 24, temp0, temp4, temp8, temp12)

VERTICAL_PASS(2, 10, 18, 26, temp1, temp5, temp9, temp13)

VERTICAL_PASS(4, 12, 20, 28, temp2, temp6, temp10, temp14)

VERTICAL_PASS(6, 14, 22, 30, temp3, temp7, temp11, temp15)

: [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp2]"=&r"(temp2),

[temp3]"=&r"(temp3), [temp4]"=&r"(temp4), [temp5]"=&r"(temp5),

[temp6]"=&r"(temp6), [temp7]"=&r"(temp7), [temp8]"=&r"(temp8),

[temp9]"=&r"(temp9), [temp10]"=&r"(temp10), [temp11]"=&r"(temp11),

[temp12]"=&r"(temp12), [temp13]"=&r"(temp13), [temp14]"=&r"(temp14),

[temp15]"=&r"(temp15), [temp16]"=&r"(temp16), [temp17]"=&r"(temp17),

[temp18]"=&r"(temp18), [temp19]"=&r"(temp19), [temp20]"=&r"(temp20)

: [args]"r"(args), [c2217]"r"(c2217), [c5352]"r"(c5352)

: "memory", "hi", "lo"

);

}

#undef VERTICAL_PASS

#undef HORIZONTAL_PASS

#if !defined(WORK_AROUND_GCC)

#define GET_SSE_INNER(A, B, C, D) \

"lbu %[temp0], " #A "(%[a]) \n\t" \

"lbu %[temp1], " #A "(%[b]) \n\t" \

"lbu %[temp2], " #B "(%[a]) \n\t" \

"lbu %[temp3], " #B "(%[b]) \n\t" \

"lbu %[temp4], " #C "(%[a]) \n\t" \

"lbu %[temp5], " #C "(%[b]) \n\t" \

"lbu %[temp6], " #D "(%[a]) \n\t" \

"lbu %[temp7], " #D "(%[b]) \n\t" \

"subu %[temp0], %[temp0], %[temp1] \n\t" \

"subu %[temp2], %[temp2], %[temp3] \n\t" \

"subu %[temp4], %[temp4], %[temp5] \n\t" \

"subu %[temp6], %[temp6], %[temp7] \n\t" \

"madd %[temp0], %[temp0] \n\t" \

"madd %[temp2], %[temp2] \n\t" \

"madd %[temp4], %[temp4] \n\t" \

"madd %[temp6], %[temp6] \n\t"

#define GET_SSE(A, B, C, D) \

GET_SSE_INNER(A, A + 1, A + 2, A + 3) \

GET_SSE_INNER(B, B + 1, B + 2, B + 3) \

GET_SSE_INNER(C, C + 1, C + 2, C + 3) \

GET_SSE_INNER(D, D + 1, D + 2, D + 3)

static int SSE16x16_MIPS32(const uint8_t* a, const uint8_t* b) {

int count;

int temp0, temp1, temp2, temp3, temp4, temp5, temp6, temp7;

__asm__ volatile(

"mult $zero, $zero \n\t"

GET_SSE( 0 * BPS, 4 + 0 * BPS, 8 + 0 * BPS, 12 + 0 * BPS)

GET_SSE( 1 * BPS, 4 + 1 * BPS, 8 + 1 * BPS, 12 + 1 * BPS)

GET_SSE( 2 * BPS, 4 + 2 * BPS, 8 + 2 * BPS, 12 + 2 * BPS)

GET_SSE( 3 * BPS, 4 + 3 * BPS, 8 + 3 * BPS, 12 + 3 * BPS)

GET_SSE( 4 * BPS, 4 + 4 * BPS, 8 + 4 * BPS, 12 + 4 * BPS)

GET_SSE( 5 * BPS, 4 + 5 * BPS, 8 + 5 * BPS, 12 + 5 * BPS)

GET_SSE( 6 * BPS, 4 + 6 * BPS, 8 + 6 * BPS, 12 + 6 * BPS)

GET_SSE( 7 * BPS, 4 + 7 * BPS, 8 + 7 * BPS, 12 + 7 * BPS)

GET_SSE( 8 * BPS, 4 + 8 * BPS, 8 + 8 * BPS, 12 + 8 * BPS)

GET_SSE( 9 * BPS, 4 + 9 * BPS, 8 + 9 * BPS, 12 + 9 * BPS)

GET_SSE(10 * BPS, 4 + 10 * BPS, 8 + 10 * BPS, 12 + 10 * BPS)

GET_SSE(11 * BPS, 4 + 11 * BPS, 8 + 11 * BPS, 12 + 11 * BPS)

GET_SSE(12 * BPS, 4 + 12 * BPS, 8 + 12 * BPS, 12 + 12 * BPS)

GET_SSE(13 * BPS, 4 + 13 * BPS, 8 + 13 * BPS, 12 + 13 * BPS)

GET_SSE(14 * BPS, 4 + 14 * BPS, 8 + 14 * BPS, 12 + 14 * BPS)

GET_SSE(15 * BPS, 4 + 15 * BPS, 8 + 15 * BPS, 12 + 15 * BPS)

"mflo %[count] \n\t"

: [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp2]"=&r"(temp2),

[temp3]"=&r"(temp3), [temp4]"=&r"(temp4), [temp5]"=&r"(temp5),

[temp6]"=&r"(temp6), [temp7]"=&r"(temp7), [count]"=&r"(count)

: [a]"r"(a), [b]"r"(b)

: "memory", "hi", "lo"

);

return count;

}

static int SSE16x8_MIPS32(const uint8_t* a, const uint8_t* b) {

int count;

int temp0, temp1, temp2, temp3, temp4, temp5, temp6, temp7;

__asm__ volatile(

"mult $zero, $zero \n\t"

GET_SSE( 0 * BPS, 4 + 0 * BPS, 8 + 0 * BPS, 12 + 0 * BPS)

GET_SSE( 1 * BPS, 4 + 1 * BPS, 8 + 1 * BPS, 12 + 1 * BPS)

GET_SSE( 2 * BPS, 4 + 2 * BPS, 8 + 2 * BPS, 12 + 2 * BPS)

GET_SSE( 3 * BPS, 4 + 3 * BPS, 8 + 3 * BPS, 12 + 3 * BPS)

GET_SSE( 4 * BPS, 4 + 4 * BPS, 8 + 4 * BPS, 12 + 4 * BPS)

GET_SSE( 5 * BPS, 4 + 5 * BPS, 8 + 5 * BPS, 12 + 5 * BPS)

GET_SSE( 6 * BPS, 4 + 6 * BPS, 8 + 6 * BPS, 12 + 6 * BPS)

GET_SSE( 7 * BPS, 4 + 7 * BPS, 8 + 7 * BPS, 12 + 7 * BPS)

"mflo %[count] \n\t"

: [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp2]"=&r"(temp2),

[temp3]"=&r"(temp3), [temp4]"=&r"(temp4), [temp5]"=&r"(temp5),

[temp6]"=&r"(temp6), [temp7]"=&r"(temp7), [count]"=&r"(count)

: [a]"r"(a), [b]"r"(b)

: "memory", "hi", "lo"

);

return count;

}

static int SSE8x8_MIPS32(const uint8_t* a, const uint8_t* b) {

int count;

int temp0, temp1, temp2, temp3, temp4, temp5, temp6, temp7;

__asm__ volatile(

"mult $zero, $zero \n\t"

GET_SSE(0 * BPS, 4 + 0 * BPS, 1 * BPS, 4 + 1 * BPS)

GET_SSE(2 * BPS, 4 + 2 * BPS, 3 * BPS, 4 + 3 * BPS)

GET_SSE(4 * BPS, 4 + 4 * BPS, 5 * BPS, 4 + 5 * BPS)

GET_SSE(6 * BPS, 4 + 6 * BPS, 7 * BPS, 4 + 7 * BPS)

"mflo %[count] \n\t"

: [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp2]"=&r"(temp2),

[temp3]"=&r"(temp3), [temp4]"=&r"(temp4), [temp5]"=&r"(temp5),

[temp6]"=&r"(temp6), [temp7]"=&r"(temp7), [count]"=&r"(count)

: [a]"r"(a), [b]"r"(b)

: "memory", "hi", "lo"

);

return count;

}

static int SSE4x4_MIPS32(const uint8_t* a, const uint8_t* b) {

int count;

int temp0, temp1, temp2, temp3, temp4, temp5, temp6, temp7;

__asm__ volatile(

"mult $zero, $zero \n\t"

GET_SSE(0 * BPS, 1 * BPS, 2 * BPS, 3 * BPS)

"mflo %[count] \n\t"

: [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp2]"=&r"(temp2),

[temp3]"=&r"(temp3), [temp4]"=&r"(temp4), [temp5]"=&r"(temp5),

[temp6]"=&r"(temp6), [temp7]"=&r"(temp7), [count]"=&r"(count)

: [a]"r"(a), [b]"r"(b)

: "memory", "hi", "lo"

);

return count;

}

#undef GET_SSE

#undef GET_SSE_INNER

#endif // !WORK_AROUND_GCC

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

// Entry point

extern void VP8EncDspInitMIPS32(void);

WEBP_TSAN_IGNORE_FUNCTION void VP8EncDspInitMIPS32(void) {

VP8ITransform = ITransform_MIPS32;

VP8FTransform = FTransform_MIPS32;

VP8EncQuantizeBlock = QuantizeBlock_MIPS32;

VP8EncQuantize2Blocks = Quantize2Blocks_MIPS32;

VP8TDisto4x4 = Disto4x4_MIPS32;

VP8TDisto16x16 = Disto16x16_MIPS32;

#if !defined(WORK_AROUND_GCC)

VP8SSE16x16 = SSE16x16_MIPS32;

VP8SSE8x8 = SSE8x8_MIPS32;

VP8SSE16x8 = SSE16x8_MIPS32;

VP8SSE4x4 = SSE4x4_MIPS32;

#endif

}

#else // !WEBP_USE_MIPS32

WEBP_DSP_INIT_STUB(VP8EncDspInitMIPS32)

#endif // WEBP_USE_MIPS32