diff options
Diffstat (limited to 'third_party/jpeg-xl/lib/jxl/dec_group_border.h')
-rw-r--r-- | third_party/jpeg-xl/lib/jxl/dec_group_border.h | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/third_party/jpeg-xl/lib/jxl/dec_group_border.h b/third_party/jpeg-xl/lib/jxl/dec_group_border.h new file mode 100644 index 0000000000..2d974c9987 --- /dev/null +++ b/third_party/jpeg-xl/lib/jxl/dec_group_border.h @@ -0,0 +1,47 @@ +// 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_DEC_GROUP_BORDER_H_ +#define LIB_JXL_DEC_GROUP_BORDER_H_ + +#include <stddef.h> + +#include <atomic> + +#include "lib/jxl/base/arch_macros.h" +#include "lib/jxl/base/status.h" +#include "lib/jxl/common.h" +#include "lib/jxl/image.h" + +namespace jxl { + +class GroupBorderAssigner { + public: + // Prepare the GroupBorderAssigner to handle a given frame. + void Init(const FrameDimensions& frame_dim); + // Marks a group as done, and returns the (at most 3) rects to run + // FinalizeImageRect on. `block_rect` must be the rect corresponding + // to the given `group_id`, measured in blocks. + void GroupDone(size_t group_id, size_t padx, size_t pady, + Rect* rects_to_finalize, size_t* num_to_finalize); + // Marks a group as not-done, for running re-paints. + void ClearDone(size_t group_id); + + static constexpr size_t kMaxToFinalize = 3; + + private: + FrameDimensions frame_dim_; + std::unique_ptr<std::atomic<uint8_t>[]> counters_; + + // Constants to identify group positions relative to the corners. + static constexpr uint8_t kTopLeft = 0x01; + static constexpr uint8_t kTopRight = 0x02; + static constexpr uint8_t kBottomRight = 0x04; + static constexpr uint8_t kBottomLeft = 0x08; +}; + +} // namespace jxl + +#endif // LIB_JXL_DEC_GROUP_BORDER_H_ |