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Diffstat (limited to '')
-rw-r--r-- | third_party/jpeg-xl/lib/jxl/render_pipeline/stage_patches.cc | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/third_party/jpeg-xl/lib/jxl/render_pipeline/stage_patches.cc b/third_party/jpeg-xl/lib/jxl/render_pipeline/stage_patches.cc new file mode 100644 index 0000000000..527be03839 --- /dev/null +++ b/third_party/jpeg-xl/lib/jxl/render_pipeline/stage_patches.cc @@ -0,0 +1,48 @@ +// 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/render_pipeline/stage_patches.h" + +namespace jxl { +namespace { +class PatchDictionaryStage : public RenderPipelineStage { + public: + PatchDictionaryStage(const PatchDictionary* patches, size_t num_channels) + : RenderPipelineStage(RenderPipelineStage::Settings()), + patches_(*patches), + num_channels_(num_channels) {} + + 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 { + PROFILER_ZONE("RenderPatches"); + JXL_ASSERT(xpos == 0 || xpos >= xextra); + size_t x0 = xpos ? xpos - xextra : 0; + std::vector<float*> row_ptrs(num_channels_); + for (size_t i = 0; i < num_channels_; i++) { + row_ptrs[i] = GetInputRow(input_rows, i, 0) + x0 - xpos; + } + patches_.AddOneRow(row_ptrs.data(), ypos, x0, xsize + xextra + xpos - x0); + } + + RenderPipelineChannelMode GetChannelMode(size_t c) const final { + return c < num_channels_ ? RenderPipelineChannelMode::kInPlace + : RenderPipelineChannelMode::kIgnored; + } + + const char* GetName() const override { return "Patches"; } + + private: + const PatchDictionary& patches_; + const size_t num_channels_; +}; +} // namespace + +std::unique_ptr<RenderPipelineStage> GetPatchesStage( + const PatchDictionary* patches, size_t num_channels) { + return jxl::make_unique<PatchDictionaryStage>(patches, num_channels); +} + +} // namespace jxl |