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// Copyright 2015 The Chromium 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 UI_GFX_BUFFER_FORMAT_UTIL_H_
#define UI_GFX_BUFFER_FORMAT_UTIL_H_
#include <stddef.h>
#include <vector>
#include "ui/gfx/buffer_types.h"
#include "ui/gfx/geometry/size.h"
#include "ui/gfx/gfx_export.h"
namespace gfx {
// Returns a vector containing all buffer formats.
GFX_EXPORT std::vector<BufferFormat> GetBufferFormatsForTesting();
// Returns the number of planes for |format|.
GFX_EXPORT size_t NumberOfPlanesForBufferFormat(BufferFormat format);
// Returns the subsampling factor applied to the given zero-indexed |plane| of
// |format| both horizontally and vertically.
GFX_EXPORT size_t SubsamplingFactorForBufferFormat(BufferFormat format,
int plane);
// Returns the number of bytes used to store a row of the given zero-indexed
// |plane| of |format|.
GFX_EXPORT size_t RowSizeForBufferFormat(size_t width,
BufferFormat format,
int plane);
// Returns the number of bytes used to store all the planes of a given |format|.
GFX_EXPORT size_t BufferSizeForBufferFormat(const Size& size,
BufferFormat format);
GFX_EXPORT bool BufferSizeForBufferFormatChecked(const Size& size,
BufferFormat format,
size_t* size_in_bytes)
WARN_UNUSED_RESULT;
GFX_EXPORT int BufferOffsetForBufferFormat(const Size& size,
BufferFormat format,
size_t plane);
} // namespace gfx
#endif // UI_GFX_BUFFER_FORMAT_UTIL_H_
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