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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 <math.h>
#include <stdint.h>
#include <stdio.h>
#include <algorithm>
#include <utility>
#include <vector>
#include "lib/jxl/render_pipeline/render_pipeline_stage.h"
namespace jxl {
class UpsampleXSlowStage : public RenderPipelineStage {
public:
UpsampleXSlowStage()
: RenderPipelineStage(RenderPipelineStage::Settings::ShiftX(1, 1)) {}
void ProcessRow(const RowInfo& input_rows, const RowInfo& output_rows,
size_t xextra, size_t xsize, size_t xpos, size_t ypos,
size_t thread_id) const final {
for (size_t c = 0; c < input_rows.size(); c++) {
const float* row = GetInputRow(input_rows, c, 0);
float* row_out = GetOutputRow(output_rows, c, 0);
for (int64_t x = -xextra; x < (int64_t)(xsize + xextra); x++) {
float xp = *(row + x - 1);
float xc = *(row + x);
float xn = *(row + x + 1);
float xout0 = xp * 0.25f + xc * 0.75f;
float xout1 = xc * 0.75f + xn * 0.25f;
*(row_out + 2 * x + 0) = xout0;
*(row_out + 2 * x + 1) = xout1;
}
}
}
const char* GetName() const override { return "TEST::UpsampleXSlowStage"; }
RenderPipelineChannelMode GetChannelMode(size_t c) const final {
return RenderPipelineChannelMode::kInOut;
}
};
class UpsampleYSlowStage : public RenderPipelineStage {
public:
UpsampleYSlowStage()
: RenderPipelineStage(RenderPipelineStage::Settings::ShiftY(1, 1)) {}
void ProcessRow(const RowInfo& input_rows, const RowInfo& output_rows,
size_t xextra, size_t xsize, size_t xpos, size_t ypos,
size_t thread_id) const final {
for (size_t c = 0; c < input_rows.size(); c++) {
const float* rowp = GetInputRow(input_rows, c, -1);
const float* rowc = GetInputRow(input_rows, c, 0);
const float* rown = GetInputRow(input_rows, c, 1);
float* row_out0 = GetOutputRow(output_rows, c, 0);
float* row_out1 = GetOutputRow(output_rows, c, 1);
for (int64_t x = -xextra; x < (int64_t)(xsize + xextra); x++) {
float xp = *(rowp + x);
float xc = *(rowc + x);
float xn = *(rown + x);
float yout0 = xp * 0.25f + xc * 0.75f;
float yout1 = xc * 0.75f + xn * 0.25f;
*(row_out0 + x) = yout0;
*(row_out1 + x) = yout1;
}
}
}
RenderPipelineChannelMode GetChannelMode(size_t c) const final {
return RenderPipelineChannelMode::kInOut;
}
const char* GetName() const override { return "TEST::UpsampleYSlowStage"; }
};
class Check0FinalStage : public RenderPipelineStage {
public:
Check0FinalStage() : RenderPipelineStage(RenderPipelineStage::Settings()) {}
void ProcessRow(const RowInfo& input_rows, const RowInfo& output_rows,
size_t xextra, size_t xsize, size_t xpos, size_t ypos,
size_t thread_id) const final {
for (size_t c = 0; c < input_rows.size(); c++) {
for (size_t x = 0; x < xsize; x++) {
JXL_CHECK(fabsf(GetInputRow(input_rows, c, 0)[x]) < 1e-8);
}
}
}
RenderPipelineChannelMode GetChannelMode(size_t c) const final {
return RenderPipelineChannelMode::kInput;
}
const char* GetName() const override { return "TEST::Check0FinalStage"; }
};
} // namespace jxl
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