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// Copyright (c) the JPEG XL Project Authors. All rights reserved.
//
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
#include "lib/jxl/loop_filter.h"
#include "lib/jxl/base/status.h"
#include "lib/jxl/fields.h"
namespace jxl {
LoopFilter::LoopFilter() { Bundle::Init(this); }
Status LoopFilter::VisitFields(Visitor* JXL_RESTRICT visitor) {
// Must come before AllDefault.
if (visitor->AllDefault(*this, &all_default)) {
// Overwrite all serialized fields, but not any nonserialized_*.
visitor->SetDefault(this);
return true;
}
JXL_QUIET_RETURN_IF_ERROR(visitor->Bool(true, &gab));
if (visitor->Conditional(gab)) {
JXL_QUIET_RETURN_IF_ERROR(visitor->Bool(false, &gab_custom));
if (visitor->Conditional(gab_custom)) {
JXL_QUIET_RETURN_IF_ERROR(
visitor->F16(1.1 * 0.104699568f, &gab_x_weight1));
JXL_QUIET_RETURN_IF_ERROR(
visitor->F16(1.1 * 0.055680538f, &gab_x_weight2));
if (std::abs(1.0f + (gab_x_weight1 + gab_x_weight2) * 4) < 1e-8) {
return JXL_FAILURE(
"Gaborish x weights lead to near 0 unnormalized kernel");
}
JXL_QUIET_RETURN_IF_ERROR(
visitor->F16(1.1 * 0.104699568f, &gab_y_weight1));
JXL_QUIET_RETURN_IF_ERROR(
visitor->F16(1.1 * 0.055680538f, &gab_y_weight2));
if (std::abs(1.0f + (gab_y_weight1 + gab_y_weight2) * 4) < 1e-8) {
return JXL_FAILURE(
"Gaborish y weights lead to near 0 unnormalized kernel");
}
JXL_QUIET_RETURN_IF_ERROR(
visitor->F16(1.1 * 0.104699568f, &gab_b_weight1));
JXL_QUIET_RETURN_IF_ERROR(
visitor->F16(1.1 * 0.055680538f, &gab_b_weight2));
if (std::abs(1.0f + (gab_b_weight1 + gab_b_weight2) * 4) < 1e-8) {
return JXL_FAILURE(
"Gaborish b weights lead to near 0 unnormalized kernel");
}
}
}
JXL_QUIET_RETURN_IF_ERROR(visitor->Bits(2, 2, &epf_iters));
if (visitor->Conditional(epf_iters > 0)) {
if (visitor->Conditional(!nonserialized_is_modular)) {
JXL_QUIET_RETURN_IF_ERROR(visitor->Bool(false, &epf_sharp_custom));
if (visitor->Conditional(epf_sharp_custom)) {
for (size_t i = 0; i < kEpfSharpEntries; ++i) {
JXL_QUIET_RETURN_IF_ERROR(visitor->F16(
float(i) / float(kEpfSharpEntries - 1), &epf_sharp_lut[i]));
}
}
}
JXL_QUIET_RETURN_IF_ERROR(visitor->Bool(false, &epf_weight_custom));
if (visitor->Conditional(epf_weight_custom)) {
JXL_QUIET_RETURN_IF_ERROR(visitor->F16(40.0f, &epf_channel_scale[0]));
JXL_QUIET_RETURN_IF_ERROR(visitor->F16(5.0f, &epf_channel_scale[1]));
JXL_QUIET_RETURN_IF_ERROR(visitor->F16(3.5f, &epf_channel_scale[2]));
JXL_QUIET_RETURN_IF_ERROR(visitor->F16(0.45f, &epf_pass1_zeroflush));
JXL_QUIET_RETURN_IF_ERROR(visitor->F16(0.6f, &epf_pass2_zeroflush));
}
JXL_QUIET_RETURN_IF_ERROR(visitor->Bool(false, &epf_sigma_custom));
if (visitor->Conditional(epf_sigma_custom)) {
if (visitor->Conditional(!nonserialized_is_modular)) {
JXL_QUIET_RETURN_IF_ERROR(visitor->F16(0.46f, &epf_quant_mul));
}
JXL_QUIET_RETURN_IF_ERROR(visitor->F16(0.9f, &epf_pass0_sigma_scale));
JXL_QUIET_RETURN_IF_ERROR(visitor->F16(6.5f, &epf_pass2_sigma_scale));
JXL_QUIET_RETURN_IF_ERROR(
visitor->F16(0.6666666666666666f, &epf_border_sad_mul));
}
if (visitor->Conditional(nonserialized_is_modular)) {
JXL_QUIET_RETURN_IF_ERROR(visitor->F16(1.0f, &epf_sigma_for_modular));
if (epf_sigma_for_modular < 1e-8) {
return JXL_FAILURE("EPF: sigma for modular is too small");
}
}
}
JXL_QUIET_RETURN_IF_ERROR(visitor->BeginExtensions(&extensions));
// Extensions: in chronological order of being added to the format.
return visitor->EndExtensions();
}
} // namespace jxl
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