// 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 "./dsp.h"
#if defined(WEBP_USE_MIPS32)
#include "./mips_macro.h"
#include "../enc/vp8i_enc.h"
#include "../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(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(const uint8_t* ref, const int16_t* in,
uint8_t* dst, int do_two) {
ITransformOne(ref, in, dst);
if (do_two) {
ITransformOne(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(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(int16_t in[32], int16_t out[32],
const VP8Matrix* const mtx) {
int nz;
nz = QuantizeBlock(in + 0 * 16, out + 0 * 16, mtx) << 0;
nz |= QuantizeBlock(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(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(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(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(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(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(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(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(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;
VP8FTransform = FTransform;
VP8EncQuantizeBlock = QuantizeBlock;
VP8EncQuantize2Blocks = Quantize2Blocks;
VP8TDisto4x4 = Disto4x4;
VP8TDisto16x16 = Disto16x16;
#if !defined(WORK_AROUND_GCC)
VP8SSE16x16 = SSE16x16;
VP8SSE8x8 = SSE8x8;
VP8SSE16x8 = SSE16x8;
VP8SSE4x4 = SSE4x4;
#endif
}
#else // !WEBP_USE_MIPS32
WEBP_DSP_INIT_STUB(VP8EncDspInitMIPS32)
#endif // WEBP_USE_MIPS32