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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 17:32:43 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 17:32:43 +0000
commit6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch)
treea68f146d7fa01f0134297619fbe7e33db084e0aa /third_party/jpeg-xl/lib/jxl/render_pipeline/stage_tone_mapping.h
parentInitial commit. (diff)
downloadthunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.tar.xz
thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.zip
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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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.
+
+#ifndef LIB_JXL_RENDER_PIPELINE_STAGE_TONE_MAPPING_H_
+#define LIB_JXL_RENDER_PIPELINE_STAGE_TONE_MAPPING_H_
+#include <math.h>
+#include <stdint.h>
+#include <stdio.h>
+
+#include <algorithm>
+#include <utility>
+#include <vector>
+
+#include "lib/jxl/dec_xyb.h"
+#include "lib/jxl/render_pipeline/render_pipeline_stage.h"
+
+namespace jxl {
+
+// Tone maps the image if appropriate. It must be in linear space and
+// `output_encoding_info.luminances` must contain the luminance for the
+// primaries of that space. It must also be encoded such that (1, 1, 1)
+// represents `output_encoding_info.orig_intensity_target` nits, unless
+// `output_encoding_info.color_encoding.tf.IsPQ()`, in which case (1, 1, 1) must
+// represent 10000 nits. This corresponds to what XYBStage outputs. After this
+// stage, (1, 1, 1) will represent
+// `output_encoding_info.desired_intensity_target` nits, except in the PQ
+// special case in which it remains 10000.
+//
+// If no tone mapping is necessary, this will return nullptr.
+std::unique_ptr<RenderPipelineStage> GetToneMappingStage(
+ const OutputEncodingInfo& output_encoding_info);
+
+} // namespace jxl
+
+#endif // LIB_JXL_RENDER_PIPELINE_STAGE_TONE_MAPPING_H_