58 lines
1.8 KiB
C++
58 lines
1.8 KiB
C++
// Copyright 2015 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Note: ported from Chromium commit head: a9d98e6
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#ifndef NATIVE_PIXMAP_HANDLE_H_
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#define NATIVE_PIXMAP_HANDLE_H_
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#include <vector>
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#include "base/file_descriptor_posix.h"
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namespace media {
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// NativePixmapPlane is used to carry the plane related information for GBM
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// buffer. More fields can be added if they are plane specific.
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struct NativePixmapPlane {
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// This is the same value as DRM_FORMAT_MOD_INVALID, which is not a valid
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// modifier. We use this to indicate that layout information
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// (tiling/compression) if any will be communicated out of band.
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static constexpr uint64_t kNoModifier = 0x00ffffffffffffffULL;
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NativePixmapPlane();
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NativePixmapPlane(int stride,
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int offset,
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uint64_t size,
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uint64_t modifier = kNoModifier);
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NativePixmapPlane(const NativePixmapPlane& other);
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~NativePixmapPlane();
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// The strides and offsets in bytes to be used when accessing the buffers via
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// a memory mapping. One per plane per entry.
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int stride;
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int offset;
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// Size in bytes of the plane.
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// This is necessary to map the buffers.
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uint64_t size;
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// The modifier is retrieved from GBM library and passed to EGL driver.
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// Generally it's platform specific, and we don't need to modify it in
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// Chromium code. Also one per plane per entry.
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uint64_t modifier;
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};
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struct NativePixmapHandle {
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NativePixmapHandle();
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NativePixmapHandle(const NativePixmapHandle& other);
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~NativePixmapHandle();
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// File descriptors for the underlying memory objects (usually dmabufs).
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std::vector<base::FileDescriptor> fds;
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std::vector<NativePixmapPlane> planes;
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};
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} // namespace media
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#endif // NATIVE_PIXMAP_HANDLE_H_
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