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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "gpu/ipc/common/android/android_hardware_buffer_utils.h"
#include <android/hardware_buffer.h>
#include "base/logging.h"
#include "ui/gfx/android/android_surface_control_compat.h"
#include "ui/gfx/geometry/size.h"
namespace gpu {
namespace {
AHardwareBuffer_Desc GetBufferDescription(const gfx::Size& size,
viz::SharedImageFormat format,
gfx::BufferUsage usage) {
// On create, all elements must be initialized, including setting the
// "reserved for future use" (rfu) fields to zero.
AHardwareBuffer_Desc desc = {};
desc.width = size.width();
desc.height = size.height();
desc.layers = 1; // number of images
if (format == viz::SinglePlaneFormat::kRGBA_8888) {
desc.format = AHARDWAREBUFFER_FORMAT_R8G8B8A8_UNORM;
} else if (format == viz::SinglePlaneFormat::kRGBX_8888) {
desc.format = AHARDWAREBUFFER_FORMAT_R8G8B8X8_UNORM;
} else if (format == viz::SinglePlaneFormat::kBGR_565) {
desc.format = AHARDWAREBUFFER_FORMAT_R5G6B5_UNORM;
} else if (format == viz::SinglePlaneFormat::kRGBA_F16) {
desc.format = AHARDWAREBUFFER_FORMAT_R16G16B16A16_FLOAT;
} else if (format == viz::SinglePlaneFormat::kRGBA_1010102) {
desc.format = AHARDWAREBUFFER_FORMAT_R10G10B10A2_UNORM;
} else {
NOTREACHED();
}
switch (usage) {
case gfx::BufferUsage::GPU_READ:
case gfx::BufferUsage::SCANOUT:
desc.usage = AHARDWAREBUFFER_USAGE_GPU_SAMPLED_IMAGE |
AHARDWAREBUFFER_USAGE_GPU_COLOR_OUTPUT;
if (usage == gfx::BufferUsage::SCANOUT) {
desc.usage |= gfx::SurfaceControl::RequiredUsage();
}
break;
default:
NOTREACHED();
}
return desc;
}
} // namespace
base::android::ScopedHardwareBufferHandle CreateScopedHardwareBufferHandle(
const gfx::Size& size,
viz::SharedImageFormat format,
gfx::BufferUsage usage) {
AHardwareBuffer* buffer = nullptr;
AHardwareBuffer_Desc desc = GetBufferDescription(size, format, usage);
AHardwareBuffer_allocate(&desc, &buffer);
if (!buffer) {
LOG(ERROR) << "Failed to allocate AHardwareBuffer";
return base::android::ScopedHardwareBufferHandle();
}
return base::android::ScopedHardwareBufferHandle::Adopt(buffer);
}
} // namespace gpu
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