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ojph_codestream_wasm.cpp
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//***************************************************************************/
// This software is released under the 2-Clause BSD license, included
// below.
//
// Copyright (c) 2022, Aous Naman
// Copyright (c) 2022, Kakadu Software Pty Ltd, Australia
// Copyright (c) 2022, The University of New South Wales, Australia
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
// IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
// TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
// PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
// TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//***************************************************************************/
// This file is part of the OpenJPH software implementation.
// File: ojph_codestream_wasm.cpp
// Author: Aous Naman
// Date: 15 May 2022
//***************************************************************************/
#include <climits>
#include <cstddef>
#include <wasm_simd128.h>
#include "ojph_defs.h"
namespace ojph {
namespace local {
void wasm_mem_clear(void* addr, size_t count)
{
float* p = (float*)addr;
v128_t zero = wasm_i32x4_splat(0);
for (size_t i = 0; i < count; i += 16, p += 4)
wasm_v128_store(p, zero);
}
ui32 wasm_find_max_val32(ui32* address)
{
v128_t x1, x0 = wasm_v128_load(address);
x1 = wasm_i32x4_shuffle(x0, x0, 2, 3, 2, 3); // x1 = x0[2,3,2,3]
x0 = wasm_v128_or(x0, x1);
x1 = wasm_i32x4_shuffle(x0, x0, 1, 1, 1, 1); // x1 = x0[1,1,1,1]
x0 = wasm_v128_or(x0, x1);
ui32 t = (ui32)wasm_i32x4_extract_lane(x0, 0);
return t;
}
ui64 wasm_find_max_val64(ui64* address)
{
v128_t x1, x0 = wasm_v128_load(address);
x1 = wasm_i64x2_shuffle(x0, x0, 1, 1); // x1 = x0[2,3,2,3]
x0 = wasm_v128_or(x0, x1);
ui64 t = (ui64)wasm_i64x2_extract_lane(x0, 0);
return t;
}
void wasm_rev_tx_to_cb32(const void *sp, ui32 *dp, ui32 K_max,
float delta_inv, ui32 count, ui32* max_val)
{
ojph_unused(delta_inv);
// convert to sign and magnitude and keep max_val
ui32 shift = 31 - K_max;
v128_t m0 = wasm_i32x4_splat(INT_MIN);
v128_t zero = wasm_i32x4_splat(0);
v128_t one = wasm_i32x4_splat(1);
v128_t tmax = wasm_v128_load(max_val);
si32 *p = (si32*)sp;
for ( ; count >= 4; count -= 4, p += 4, dp += 4)
{
v128_t v = wasm_v128_load(p);
v128_t sign = wasm_i32x4_lt(v, zero);
v128_t val = wasm_v128_xor(v, sign); // negate 1's complement
v128_t ones = wasm_v128_and(sign, one);
val = wasm_i32x4_add(val, ones); // 2's complement
sign = wasm_v128_and(sign, m0);
val = wasm_i32x4_shl(val, shift);
tmax = wasm_v128_or(tmax, val);
val = wasm_v128_or(val, sign);
wasm_v128_store(dp, val);
}
if (count)
{
v128_t v = wasm_v128_load(p);
v128_t sign = wasm_i32x4_lt(v, zero);
v128_t val = wasm_v128_xor(v, sign); // negate 1's complement
v128_t ones = wasm_v128_and(sign, one);
val = wasm_i32x4_add(val, ones); // 2's complement
sign = wasm_v128_and(sign, m0);
val = wasm_i32x4_shl(val, shift);
v128_t c = wasm_i32x4_splat((si32)count);
v128_t idx = wasm_i32x4_make(0, 1, 2, 3);
v128_t mask = wasm_i32x4_gt(c, idx);
c = wasm_v128_and(val, mask);
tmax = wasm_v128_or(tmax, c);
val = wasm_v128_or(val, sign);
wasm_v128_store(dp, val);
}
wasm_v128_store(max_val, tmax);
}
void wasm_irv_tx_to_cb32(const void *sp, ui32 *dp, ui32 K_max,
float delta_inv, ui32 count, ui32* max_val)
{
ojph_unused(K_max);
//quantize and convert to sign and magnitude and keep max_val
v128_t d = wasm_f32x4_splat(delta_inv);
v128_t zero = wasm_i32x4_splat(0);
v128_t one = wasm_i32x4_splat(1);
v128_t tmax = wasm_v128_load(max_val);
float *p = (float*)sp;
for ( ; count >= 4; count -= 4, p += 4, dp += 4)
{
v128_t vf = wasm_v128_load(p);
vf = wasm_f32x4_mul(vf, d); // multiply
v128_t val = wasm_i32x4_trunc_sat_f32x4(vf); // convert to signed int
v128_t sign = wasm_i32x4_lt(val, zero); // get sign
val = wasm_v128_xor(val, sign); // negate 1's complement
v128_t ones = wasm_v128_and(sign, one);
val = wasm_i32x4_add(val, ones); // 2's complement
tmax = wasm_v128_or(tmax, val);
sign = wasm_i32x4_shl(sign, 31);
val = wasm_v128_or(val, sign);
wasm_v128_store(dp, val);
}
if (count)
{
v128_t vf = wasm_v128_load(p);
vf = wasm_f32x4_mul(vf, d); // multiply
v128_t val = wasm_i32x4_trunc_sat_f32x4(vf); // convert to signed int
v128_t sign = wasm_i32x4_lt(val, zero); // get sign
val = wasm_v128_xor(val, sign); // negate 1's complement
v128_t ones = wasm_v128_and(sign, one);
val = wasm_i32x4_add(val, ones); // 2's complement
v128_t c = wasm_i32x4_splat((si32)count);
v128_t idx = wasm_i32x4_make(0, 1, 2, 3);
v128_t mask = wasm_i32x4_gt(c, idx);
c = wasm_v128_and(val, mask);
tmax = wasm_v128_or(tmax, c);
sign = wasm_i32x4_shl(sign, 31);
val = wasm_v128_or(val, sign);
wasm_v128_store(dp, val);
}
wasm_v128_store(max_val, tmax);
}
void wasm_rev_tx_from_cb32(const ui32 *sp, void *dp, ui32 K_max,
float delta, ui32 count)
{
ojph_unused(delta);
ui32 shift = 31 - K_max;
v128_t m1 = wasm_i32x4_splat(INT_MAX);
v128_t zero = wasm_i32x4_splat(0);
v128_t one = wasm_i32x4_splat(1);
si32 *p = (si32*)dp;
for (ui32 i = 0; i < count; i += 4, sp += 4, p += 4)
{
v128_t v = wasm_v128_load((v128_t*)sp);
v128_t val = wasm_v128_and(v, m1);
val = wasm_i32x4_shr(val, shift);
v128_t sign = wasm_i32x4_lt(v, zero);
val = wasm_v128_xor(val, sign); // negate 1's complement
v128_t ones = wasm_v128_and(sign, one);
val = wasm_i32x4_add(val, ones); // 2's complement
wasm_v128_store(p, val);
}
}
void wasm_irv_tx_from_cb32(const ui32 *sp, void *dp, ui32 K_max,
float delta, ui32 count)
{
ojph_unused(K_max);
v128_t m1 = wasm_i32x4_splat(INT_MAX);
v128_t d = wasm_f32x4_splat(delta);
float *p = (float*)dp;
for (ui32 i = 0; i < count; i += 4, sp += 4, p += 4)
{
v128_t v = wasm_v128_load((v128_t*)sp);
v128_t vali = wasm_v128_and(v, m1);
v128_t valf = wasm_f32x4_convert_i32x4(vali);
valf = wasm_f32x4_mul(valf, d);
v128_t sign = wasm_v128_andnot(v, m1);
valf = wasm_v128_or(valf, sign);
wasm_v128_store(p, valf);
}
}
void wasm_rev_tx_to_cb64(const void *sp, ui64 *dp, ui32 K_max,
float delta_inv, ui32 count, ui64* max_val)
{
ojph_unused(delta_inv);
// convert to sign and magnitude and keep max_val
ui32 shift = 63 - K_max;
v128_t m0 = wasm_i64x2_splat(LLONG_MIN);
v128_t zero = wasm_i64x2_splat(0);
v128_t one = wasm_i64x2_splat(1);
v128_t tmax = wasm_v128_load(max_val);
si64 *p = (si64*)sp;
for ( ; count >= 2; count -= 2, p += 2, dp += 2)
{
v128_t v = wasm_v128_load(p);
v128_t sign = wasm_i64x2_lt(v, zero);
v128_t val = wasm_v128_xor(v, sign); // negate 1's complement
v128_t ones = wasm_v128_and(sign, one);
val = wasm_i64x2_add(val, ones); // 2's complement
sign = wasm_v128_and(sign, m0);
val = wasm_i64x2_shl(val, shift);
tmax = wasm_v128_or(tmax, val);
val = wasm_v128_or(val, sign);
wasm_v128_store(dp, val);
}
if (count)
{
v128_t v = wasm_v128_load(p);
v128_t sign = wasm_i64x2_lt(v, zero);
v128_t val = wasm_v128_xor(v, sign); // negate 1's complement
v128_t ones = wasm_v128_and(sign, one);
val = wasm_i64x2_add(val, ones); // 2's complement
sign = wasm_v128_and(sign, m0);
val = wasm_i64x2_shl(val, shift);
v128_t c = wasm_i32x4_make((si32)0xFFFFFFFF, (si32)0xFFFFFFFF, 0, 0);
c = wasm_v128_and(val, c);
tmax = wasm_v128_or(tmax, c);
val = wasm_v128_or(val, sign);
wasm_v128_store(dp, val);
}
wasm_v128_store(max_val, tmax);
}
void wasm_rev_tx_from_cb64(const ui64 *sp, void *dp, ui32 K_max,
float delta, ui32 count)
{
ojph_unused(delta);
ui32 shift = 63 - K_max;
v128_t m1 = wasm_i64x2_splat(LLONG_MAX);
v128_t zero = wasm_i64x2_splat(0);
v128_t one = wasm_i64x2_splat(1);
si64 *p = (si64*)dp;
for (ui32 i = 0; i < count; i += 2, sp += 2, p += 2)
{
v128_t v = wasm_v128_load((v128_t*)sp);
v128_t val = wasm_v128_and(v, m1);
val = wasm_i64x2_shr(val, shift);
v128_t sign = wasm_i64x2_lt(v, zero);
val = wasm_v128_xor(val, sign); // negate 1's complement
v128_t ones = wasm_v128_and(sign, one);
val = wasm_i64x2_add(val, ones); // 2's complement
wasm_v128_store(p, val);
}
}
}
}
ojph::local
Definition ojph_bitbuffer_read.h:52
ojph::local::wasm_rev_tx_to_cb64
void wasm_rev_tx_to_cb64(const void *sp, ui64 *dp, ui32 K_max, float delta_inv, ui32 count, ui64 *max_val)
Definition ojph_codestream_wasm.cpp:220
ojph::local::wasm_find_max_val32
ui32 wasm_find_max_val32(ui32 *address)
Definition ojph_codestream_wasm.cpp:57
ojph::local::wasm_rev_tx_from_cb32
void wasm_rev_tx_from_cb32(const ui32 *sp, void *dp, ui32 K_max, float delta, ui32 count)
Definition ojph_codestream_wasm.cpp:177
ojph::local::wasm_rev_tx_from_cb64
void wasm_rev_tx_from_cb64(const ui64 *sp, void *dp, ui32 K_max, float delta, ui32 count)
Definition ojph_codestream_wasm.cpp:267
ojph::local::wasm_irv_tx_to_cb32
void wasm_irv_tx_to_cb32(const void *sp, ui32 *dp, ui32 K_max, float delta_inv, ui32 count, ui32 *max_val)
Definition ojph_codestream_wasm.cpp:127
ojph::local::wasm_find_max_val64
ui64 wasm_find_max_val64(ui64 *address)
Definition ojph_codestream_wasm.cpp:69
ojph::local::wasm_mem_clear
void wasm_mem_clear(void *addr, size_t count)
Definition ojph_codestream_wasm.cpp:48
ojph::local::wasm_rev_tx_to_cb32
void wasm_rev_tx_to_cb32(const void *sp, ui32 *dp, ui32 K_max, float delta_inv, ui32 count, ui32 *max_val)
Definition ojph_codestream_wasm.cpp:79
ojph::local::wasm_irv_tx_from_cb32
void wasm_irv_tx_from_cb32(const ui32 *sp, void *dp, ui32 K_max, float delta, ui32 count)
Definition ojph_codestream_wasm.cpp:200
ojph
Definition ojph_img_io.h:52
ojph::si64
int64_t si64
Definition ojph_defs.h:57
ojph::ui64
uint64_t ui64
Definition ojph_defs.h:56
ojph::si32
int32_t si32
Definition ojph_defs.h:55
ojph::ui32
uint32_t ui32
Definition ojph_defs.h:54
ojph_defs.h
ojph_unused
#define ojph_unused(x)
Definition ojph_defs.h:78