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// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef UI_GFX_BUFFER_TYPES_H_
#define UI_GFX_BUFFER_TYPES_H_
#include <stdint.h>
namespace gfx {
// The format needs to be taken into account when mapping a buffer into the
// client's address space.
enum class BufferFormat : uint8_t {
// Used as an enum for metrics. DO NOT reorder or delete values. Rather,
// add them at the end and increment kMaxValue.
R_8,
R_16,
RG_88,
RG_1616,
BGR_565,
RGBA_4444,
RGBX_8888,
RGBA_8888,
BGRX_8888,
BGRA_1010102,
RGBA_1010102,
BGRA_8888,
RGBA_F16,
YVU_420,
YUV_420_BIPLANAR,
YUVA_420_TRIPLANAR,
P010,
LAST = P010,
kMaxValue = LAST
};
// The usage mode affects how a buffer can be used. Only buffers created with
// *_CPU_READ_WRITE_* can be mapped into the client's address space and accessed
// by the CPU.
// *_VDA_WRITE is for cases where a video decode accelerator writes into the
// buffers.
// PROTECTED_* are for HW protected buffers that cannot be read by the CPU and
// can only be read in protected GPU contexts or scanned out to overlays.
// At present, SCANOUT implies GPU_READ_WRITE. This doesn't apply to other
// SCANOUT_* values.
// TODO(reveman): Add GPU_READ_WRITE for use-cases where SCANOUT is not
// required.
enum class BufferUsage {
GPU_READ,
SCANOUT,
// SCANOUT_CAMERA_READ_WRITE implies CPU_READ_WRITE.
SCANOUT_CAMERA_READ_WRITE,
CAMERA_AND_CPU_READ_WRITE,
SCANOUT_CPU_READ_WRITE,
SCANOUT_VDA_WRITE,
PROTECTED_SCANOUT,
PROTECTED_SCANOUT_VDA_WRITE,
GPU_READ_CPU_READ_WRITE,
SCANOUT_VEA_CPU_READ,
SCANOUT_FRONT_RENDERING,
VEA_READ_CAMERA_AND_CPU_READ_WRITE,
LAST = VEA_READ_CAMERA_AND_CPU_READ_WRITE
};
struct BufferUsageAndFormat {
BufferUsageAndFormat()
: usage(BufferUsage::GPU_READ), format(BufferFormat::RGBA_8888) {}
BufferUsageAndFormat(BufferUsage usage, BufferFormat format)
: usage(usage), format(format) {}
bool operator==(const BufferUsageAndFormat& other) const {
return usage == other.usage && format == other.format;
}
BufferUsage usage;
BufferFormat format;
};
// Used to identify the plane of a GpuMemoryBuffer to use when creating a
// SharedImage.
enum class BufferPlane {
// For single-plane GpuMemoryBuffer, this refers to that single plane. For
// YUV_420, YUV_420_BIPLANAR, YUVA_420_TRIPLANAR, and P010 GpuMemoryBuffers,
// this refers to an RGB representation of the planes (either bound directly
// as a texture or created through an extra copy).
DEFAULT,
// The Y plane for YUV_420, YUV_420_BIPLANAR, YUVA_420_TRIPLANAR, and P010.
Y,
// The UV plane for YUV_420_BIPLANAR, YUVA_420_TRIPLANAR and P010.
UV,
// The U plane for YUV_420.
U,
// The V plane for YUV_420.
V,
// The A plane for YUVA_420_TRIPLANAR.
A,
LAST = A
};
} // namespace gfx
#endif // UI_GFX_BUFFER_TYPES_H_
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