155 lines
7.0 KiB
C
155 lines
7.0 KiB
C
|
// 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.
|
||
|
|
// -----------------------------------------------------------------------------
|
||
|
|
//
|
||
|
|
// Author: Djordje Pesut (djordje.pesut@imgtec.com)
|
||
|
|
|
||
|
|
#include "./dsp.h"
|
||
|
|
|
||
|
|
#if defined(WEBP_USE_MIPS32)
|
||
|
|
|
||
|
|
#include "../enc/cost.h"
|
||
|
|
|
||
|
|
static int GetResidualCost(int ctx0, const VP8Residual* const res) {
|
||
|
|
int temp0, temp1;
|
||
|
|
int v_reg, ctx_reg;
|
||
|
|
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];
|
||
|
|
CostArrayPtr const costs = res->costs;
|
||
|
|
const uint16_t* t = costs[n][ctx0];
|
||
|
|
// bit_cost(1, p0) is already incorporated in t[] tables, but only if ctx != 0
|
||
|
|
// (as required by the syntax). For ctx0 == 0, we need to add it here or it'll
|
||
|
|
// be missing during the loop.
|
||
|
|
int cost = (ctx0 == 0) ? VP8BitCost(1, p0) : 0;
|
||
|
|
const int16_t* res_coeffs = res->coeffs;
|
||
|
|
const int res_last = res->last;
|
||
|
|
const int const_max_level = MAX_VARIABLE_LEVEL;
|
||
|
|
const int const_2 = 2;
|
||
|
|
const uint16_t** p_costs = &costs[n][0];
|
||
|
|
const size_t inc_p_costs = NUM_CTX * sizeof(*p_costs);
|
||
|
|
|
||
|
|
if (res->last < 0) {
|
||
|
|
return VP8BitCost(0, p0);
|
||
|
|
}
|
||
|
|
|
||
|
|
__asm__ volatile (
|
||
|
|
".set push \n\t"
|
||
|
|
".set noreorder \n\t"
|
||
|
|
"subu %[temp1], %[res_last], %[n] \n\t"
|
||
|
|
"sll %[temp0], %[n], 1 \n\t"
|
||
|
|
"blez %[temp1], 2f \n\t"
|
||
|
|
" addu %[res_coeffs], %[res_coeffs], %[temp0] \n\t"
|
||
|
|
"1: \n\t"
|
||
|
|
"lh %[v_reg], 0(%[res_coeffs]) \n\t"
|
||
|
|
"addiu %[n], %[n], 1 \n\t"
|
||
|
|
"negu %[temp0], %[v_reg] \n\t"
|
||
|
|
"slti %[temp1], %[v_reg], 0 \n\t"
|
||
|
|
"movn %[v_reg], %[temp0], %[temp1] \n\t"
|
||
|
|
"sltiu %[temp0], %[v_reg], 2 \n\t"
|
||
|
|
"move %[ctx_reg], %[v_reg] \n\t"
|
||
|
|
"movz %[ctx_reg], %[const_2], %[temp0] \n\t"
|
||
|
|
"sll %[temp1], %[v_reg], 1 \n\t"
|
||
|
|
"addu %[temp1], %[temp1], %[VP8LevelFixedCosts] \n\t"
|
||
|
|
"lhu %[temp1], 0(%[temp1]) \n\t"
|
||
|
|
"slt %[temp0], %[v_reg], %[const_max_level] \n\t"
|
||
|
|
"movz %[v_reg], %[const_max_level], %[temp0] \n\t"
|
||
|
|
"addu %[cost], %[cost], %[temp1] \n\t"
|
||
|
|
"sll %[v_reg], %[v_reg], 1 \n\t"
|
||
|
|
"sll %[ctx_reg], %[ctx_reg], 2 \n\t"
|
||
|
|
"addu %[v_reg], %[v_reg], %[t] \n\t"
|
||
|
|
"lhu %[temp0], 0(%[v_reg]) \n\t"
|
||
|
|
"addu %[p_costs], %[p_costs], %[inc_p_costs] \n\t"
|
||
|
|
"addu %[t], %[p_costs], %[ctx_reg] \n\t"
|
||
|
|
"addu %[cost], %[cost], %[temp0] \n\t"
|
||
|
|
"addiu %[res_coeffs], %[res_coeffs], 2 \n\t"
|
||
|
|
"bne %[n], %[res_last], 1b \n\t"
|
||
|
|
" lw %[t], 0(%[t]) \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), [p_costs]"+&r"(p_costs), [temp0]"=&r"(temp0),
|
||
|
|
[temp1]"=&r"(temp1), [res_coeffs]"+&r"(res_coeffs)
|
||
|
|
: [const_2]"r"(const_2), [const_max_level]"r"(const_max_level),
|
||
|
|
[VP8LevelFixedCosts]"r"(VP8LevelFixedCosts), [res_last]"r"(res_last),
|
||
|
|
[inc_p_costs]"r"(inc_p_costs)
|
||
|
|
: "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;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void SetResidualCoeffs(const int16_t* const coeffs,
|
||
|
|
VP8Residual* const res) {
|
||
|
|
const int16_t* p_coeffs = (int16_t*)coeffs;
|
||
|
|
int temp0, temp1, temp2, n, n1;
|
||
|
|
assert(res->first == 0 || coeffs[0] == 0);
|
||
|
|
|
||
|
|
__asm__ volatile (
|
||
|
|
".set push \n\t"
|
||
|
|
".set noreorder \n\t"
|
||
|
|
"addiu %[p_coeffs], %[p_coeffs], 28 \n\t"
|
||
|
|
"li %[n], 15 \n\t"
|
||
|
|
"li %[temp2], -1 \n\t"
|
||
|
|
"0: \n\t"
|
||
|
|
"ulw %[temp0], 0(%[p_coeffs]) \n\t"
|
||
|
|
"beqz %[temp0], 1f \n\t"
|
||
|
|
#if defined(WORDS_BIGENDIAN)
|
||
|
|
" sll %[temp1], %[temp0], 16 \n\t"
|
||
|
|
#else
|
||
|
|
" srl %[temp1], %[temp0], 16 \n\t"
|
||
|
|
#endif
|
||
|
|
"addiu %[n1], %[n], -1 \n\t"
|
||
|
|
"movz %[temp0], %[n1], %[temp1] \n\t"
|
||
|
|
"movn %[temp0], %[n], %[temp1] \n\t"
|
||
|
|
"j 2f \n\t"
|
||
|
|
" addiu %[temp2], %[temp0], 0 \n\t"
|
||
|
|
"1: \n\t"
|
||
|
|
"addiu %[n], %[n], -2 \n\t"
|
||
|
|
"bgtz %[n], 0b \n\t"
|
||
|
|
" addiu %[p_coeffs], %[p_coeffs], -4 \n\t"
|
||
|
|
"2: \n\t"
|
||
|
|
".set pop \n\t"
|
||
|
|
: [p_coeffs]"+&r"(p_coeffs), [temp0]"=&r"(temp0),
|
||
|
|
[temp1]"=&r"(temp1), [temp2]"=&r"(temp2),
|
||
|
|
[n]"=&r"(n), [n1]"=&r"(n1)
|
||
|
|
:
|
||
|
|
: "memory"
|
||
|
|
);
|
||
|
|
res->last = temp2;
|
||
|
|
res->coeffs = coeffs;
|
||
|
|
}
|
||
|
|
|
||
|
|
//------------------------------------------------------------------------------
|
||
|
|
// Entry point
|
||
|
|
|
||
|
|
extern void VP8EncDspCostInitMIPS32(void);
|
||
|
|
|
||
|
|
WEBP_TSAN_IGNORE_FUNCTION void VP8EncDspCostInitMIPS32(void) {
|
||
|
|
VP8GetResidualCost = GetResidualCost;
|
||
|
|
VP8SetResidualCoeffs = SetResidualCoeffs;
|
||
|
|
}
|
||
|
|
|
||
|
|
#else // !WEBP_USE_MIPS32
|
||
|
|
|
||
|
|
WEBP_DSP_INIT_STUB(VP8EncDspCostInitMIPS32)
|
||
|
|
|
||
|
|
#endif // WEBP_USE_MIPS32
|