1 files changed, 32 insertions, 0 deletions
diff --git a/third_party/jpeg-xl/lib/jxl/render_pipeline/stage_noise.h b/third_party/jpeg-xl/lib/jxl/render_pipeline/stage_noise.h
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index 0000000000..bd7797f991
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+++ b/third_party/jpeg-xl/lib/jxl/render_pipeline/stage_noise.h
@@ -0,0 +1,32 @@
+// 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.
+
+#ifndef LIB_JXL_RENDER_PIPELINE_STAGE_NOISE_H_
+#define LIB_JXL_RENDER_PIPELINE_STAGE_NOISE_H_
+#include <math.h>
+#include <stdint.h>
+#include <stdio.h>
+
+#include <algorithm>
+#include <utility>
+#include <vector>
+
+#include "lib/jxl/dec_noise.h"
+#include "lib/jxl/render_pipeline/render_pipeline_stage.h"
+
+namespace jxl {
+
+// Adds noise to color channels.
+std::unique_ptr<RenderPipelineStage> GetAddNoiseStage(
+    const NoiseParams& noise_params, const ColorCorrelationMap& cmap,
+    size_t noise_c_start);
+
+// Applies a 5x5 subtract-box-filter convolution to the noise input channels.
+std::unique_ptr<RenderPipelineStage> GetConvolveNoiseStage(
+    size_t noise_c_start);
+
+}  // namespace jxl
+
+#endif  // LIB_JXL_RENDER_PIPELINE_STAGE_NOISE_H_