// 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 "../enc/vp8enci.h"
#include "../enc/cost.h"
#if defined(__GNUC__) && defined(__ANDROID__) && LOCAL_GCC_VERSION == 0x409
#define WORK_AROUND_GCC
#endif
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..D - offsets 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, B, C, D, 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], "#A"(%[temp20]) \n\t" \
"lbu %[temp17], "#B"(%[temp20]) \n\t" \
"lbu %[temp18], "#C"(%[temp20]) \n\t" \
"lbu %[temp19], "#D"(%[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"], "#A"(%[temp16]) \n\t" \
"sb %["#TEMP4"], "#B"(%[temp16]) \n\t" \
"sb %["#TEMP8"], "#C"(%[temp16]) \n\t" \
"sb %["#TEMP12"], "#D"(%[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, 1, 2, 3, temp0, temp4, temp8, temp12)
HORIZONTAL_PASS(16, 17, 18, 19, temp1, temp5, temp9, temp13)
HORIZONTAL_PASS(32, 33, 34, 35, temp2, temp6, temp10, temp14)
HORIZONTAL_PASS(48, 49, 50, 51, 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;
}
#undef QUANTIZE_ONE
// macro for one horizontal pass in Disto4x4 (TTransform)
// two calls of function TTransform are merged into single one
// A..D - offsets 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, B, C, D, E, F, G, H, E1, F1, G1, H1) \
"lbu %[temp0], "#A"(%[a]) \n\t" \
"lbu %[temp1], "#B"(%[a]) \n\t" \
"lbu %[temp2], "#C"(%[a]) \n\t" \
"lbu %[temp3], "#D"(%[a]) \n\t" \
"lbu %[temp4], "#A"(%[b]) \n\t" \
"lbu %[temp5], "#B"(%[b]) \n\t" \
"lbu %[temp6], "#C"(%[b]) \n\t" \
"lbu %[temp7], "#D"(%[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, 1, 2, 3, 0, 4, 8, 12, 64, 68, 72, 76)
HORIZONTAL_PASS(16, 17, 18, 19, 16, 20, 24, 28, 80, 84, 88, 92)
HORIZONTAL_PASS(32, 33, 34, 35, 32, 36, 40, 44, 96, 100, 104, 108)
HORIZONTAL_PASS(48, 49, 50, 51, 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..D - offsets in bytes to load from src and ref buffers
// TEMP0..TEMP3 - registers for corresponding tmp elements
#define HORIZONTAL_PASS(A, B, C, D, TEMP0, TEMP1, TEMP2, TEMP3) \
"lw %["#TEMP1"], 0(%[args]) \n\t" \
"lw %["#TEMP2"], 4(%[args]) \n\t" \
"lbu %[temp16], "#A"(%["#TEMP1"]) \n\t" \
"lbu %[temp17], "#A"(%["#TEMP2"]) \n\t" \
"lbu %[temp18], "#B"(%["#TEMP1"]) \n\t" \
"lbu %[temp19], "#B"(%["#TEMP2"]) \n\t" \
"subu %[temp20], %[temp16], %[temp17] \n\t" \
"lbu %[temp16], "#C"(%["#TEMP1"]) \n\t" \
"lbu %[temp17], "#C"(%["#TEMP2"]) \n\t" \
"subu %["#TEMP0"], %[temp18], %[temp19] \n\t" \
"lbu %[temp18], "#D"(%["#TEMP1"]) \n\t" \
"lbu %[temp19], "#D"(%["#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, 1, 2, 3, temp0, temp1, temp2, temp3)
HORIZONTAL_PASS(16, 17, 18, 19, temp4, temp5, temp6, temp7)
HORIZONTAL_PASS(32, 33, 34, 35, temp8, temp9, temp10, temp11)
HORIZONTAL_PASS(48, 49, 50, 51, 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
// Forward declaration.
extern int VP8GetResidualCostMIPS32(int ctx0, const VP8Residual* const res);
int VP8GetResidualCostMIPS32(int ctx0, const VP8Residual* const res) {
int n = res->first;
// should be prob[VP8EncBands[n]], but it's equivalent for n=0 or 1
int p0 = res->prob[n][ctx0][0];
const uint16_t* t = res->cost[n][ctx0];
int cost;
const int const_2 = 2;
const int const_255 = 255;
const int const_max_level = MAX_VARIABLE_LEVEL;
int res_cost;
int res_prob;
int res_coeffs;
int res_last;
int v_reg;
int b_reg;
int ctx_reg;
int cost_add, temp_1, temp_2, temp_3;
if (res->last < 0) {
return VP8BitCost(0, p0);
}
cost = (ctx0 == 0) ? VP8BitCost(1, p0) : 0;
res_cost = (int)res->cost;
res_prob = (int)res->prob;
res_coeffs = (int)res->coeffs;
res_last = (int)res->last;
__asm__ volatile(
".set push \n\t"
".set noreorder \n\t"
"sll %[temp_1], %[n], 1 \n\t"
"addu %[res_coeffs], %[res_coeffs], %[temp_1] \n\t"
"slt %[temp_2], %[n], %[res_last] \n\t"
"bnez %[temp_2], 1f \n\t"
" li %[cost_add], 0 \n\t"
"b 2f \n\t"
" nop \n\t"
"1: \n\t"
"lh %[v_reg], 0(%[res_coeffs]) \n\t"
"addu %[b_reg], %[n], %[VP8EncBands] \n\t"
"move %[temp_1], %[const_max_level] \n\t"
"addu %[cost], %[cost], %[cost_add] \n\t"
"negu %[temp_2], %[v_reg] \n\t"
"slti %[temp_3], %[v_reg], 0 \n\t"
"movn %[v_reg], %[temp_2], %[temp_3] \n\t"
"lbu %[b_reg], 1(%[b_reg]) \n\t"
"li %[cost_add], 0 \n\t"
"sltiu %[temp_3], %[v_reg], 2 \n\t"
"move %[ctx_reg], %[v_reg] \n\t"
"movz %[ctx_reg], %[const_2], %[temp_3] \n\t"
// cost += VP8LevelCost(t, v);
"slt %[temp_3], %[v_reg], %[const_max_level] \n\t"
"movn %[temp_1], %[v_reg], %[temp_3] \n\t"
"sll %[temp_2], %[v_reg], 1 \n\t"
"addu %[temp_2], %[temp_2], %[VP8LevelFixedCosts] \n\t"
"lhu %[temp_2], 0(%[temp_2]) \n\t"
"sll %[temp_1], %[temp_1], 1 \n\t"
"addu %[temp_1], %[temp_1], %[t] \n\t"
"lhu %[temp_3], 0(%[temp_1]) \n\t"
"addu %[cost], %[cost], %[temp_2] \n\t"
// t = res->cost[b][ctx];
"sll %[temp_1], %[ctx_reg], 7 \n\t"
"sll %[temp_2], %[ctx_reg], 3 \n\t"
"addu %[cost], %[cost], %[temp_3] \n\t"
"addu %[temp_1], %[temp_1], %[temp_2] \n\t"
"sll %[temp_2], %[b_reg], 3 \n\t"
"sll %[temp_3], %[b_reg], 5 \n\t"
"sub %[temp_2], %[temp_3], %[temp_2] \n\t"
"sll %[temp_3], %[temp_2], 4 \n\t"
"addu %[temp_1], %[temp_1], %[temp_3] \n\t"
"addu %[temp_2], %[temp_2], %[res_cost] \n\t"
"addiu %[n], %[n], 1 \n\t"
"addu %[t], %[temp_1], %[temp_2] \n\t"
"slt %[temp_1], %[n], %[res_last] \n\t"
"bnez %[temp_1], 1b \n\t"
" addiu %[res_coeffs], %[res_coeffs], 2 \n\t"
"2: \n\t"
".set pop \n\t"
: [cost]"+r"(cost), [t]"+r"(t), [n]"+r"(n), [v_reg]"=&r"(v_reg),
[ctx_reg]"=&r"(ctx_reg), [b_reg]"=&r"(b_reg), [cost_add]"=&r"(cost_add),
[temp_1]"=&r"(temp_1), [temp_2]"=&r"(temp_2), [temp_3]"=&r"(temp_3)
: [const_2]"r"(const_2), [const_255]"r"(const_255), [res_last]"r"(res_last),
[VP8EntropyCost]"r"(VP8EntropyCost), [VP8EncBands]"r"(VP8EncBands),
[const_max_level]"r"(const_max_level), [res_prob]"r"(res_prob),
[VP8LevelFixedCosts]"r"(VP8LevelFixedCosts), [res_coeffs]"r"(res_coeffs),
[res_cost]"r"(res_cost)
: "memory"
);
// Last coefficient is always non-zero
{
const int v = abs(res->coeffs[n]);
assert(v != 0);
cost += VP8LevelCost(t, v);
if (n < 15) {
const int b = VP8EncBands[n + 1];
const int ctx = (v == 1) ? 1 : 2;
const int last_p0 = res->prob[b][ctx][0];
cost += VP8BitCost(0, last_p0);
}
}
return cost;
}
#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)
#if !defined(WORK_AROUND_GCC)
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, 4, 8, 12)
GET_SSE( 16, 20, 24, 28)
GET_SSE( 32, 36, 40, 44)
GET_SSE( 48, 52, 56, 60)
GET_SSE( 64, 68, 72, 76)
GET_SSE( 80, 84, 88, 92)
GET_SSE( 96, 100, 104, 108)
GET_SSE(112, 116, 120, 124)
GET_SSE(128, 132, 136, 140)
GET_SSE(144, 148, 152, 156)
GET_SSE(160, 164, 168, 172)
GET_SSE(176, 180, 184, 188)
GET_SSE(192, 196, 200, 204)
GET_SSE(208, 212, 216, 220)
GET_SSE(224, 228, 232, 236)
GET_SSE(240, 244, 248, 252)
"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, 4, 8, 12)
GET_SSE( 16, 20, 24, 28)
GET_SSE( 32, 36, 40, 44)
GET_SSE( 48, 52, 56, 60)
GET_SSE( 64, 68, 72, 76)
GET_SSE( 80, 84, 88, 92)
GET_SSE( 96, 100, 104, 108)
GET_SSE(112, 116, 120, 124)
"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, 4, 16, 20)
GET_SSE(32, 36, 48, 52)
GET_SSE(64, 68, 80, 84)
GET_SSE(96, 100, 112, 116)
"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, 16, 32, 48)
"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;
}
#endif // WORK_AROUND_GCC
#undef GET_SSE_MIPS32
#undef GET_SSE_MIPS32_INNER
#endif // WEBP_USE_MIPS32
//------------------------------------------------------------------------------
// Entry point
extern void VP8EncDspInitMIPS32(void);
void VP8EncDspInitMIPS32(void) {
#if defined(WEBP_USE_MIPS32)
VP8ITransform = ITransform;
VP8EncQuantizeBlock = QuantizeBlock;
VP8TDisto4x4 = Disto4x4;
VP8TDisto16x16 = Disto16x16;
VP8FTransform = FTransform;
#if !defined(WORK_AROUND_GCC)
VP8SSE16x16 = SSE16x16;
VP8SSE8x8 = SSE8x8;
VP8SSE16x8 = SSE16x8;
VP8SSE4x4 = SSE4x4;
#endif
#endif // WEBP_USE_MIPS32
}