1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136
|
// 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.
#include "ui/gfx/linux/client_native_pixmap_factory_dmabuf.h"
#include <utility>
#include "base/logging.h"
#include "base/memory/ptr_util.h"
#include "base/trace_event/trace_event.h"
#include "build/build_config.h"
#include "ui/gfx/native_pixmap_handle.h"
// Although, it's compiled for all linux platforms, it does not mean dmabuf
// will work there. Check the comment below in the
// ClientNativePixmapFactoryDmabuf for more details.
#include "ui/gfx/linux/client_native_pixmap_dmabuf.h"
namespace gfx {
namespace {
class ClientNativePixmapOpaque : public ClientNativePixmap {
public:
explicit ClientNativePixmapOpaque(NativePixmapHandle pixmap_handle)
: pixmap_handle_(std::move(pixmap_handle)) {}
~ClientNativePixmapOpaque() override = default;
bool Map() override { return false; }
void Unmap() override { NOTREACHED(); }
size_t GetNumberOfPlanes() const override {
return pixmap_handle_.planes.size();
}
void* GetMemoryAddress(size_t plane) const override { NOTREACHED(); }
int GetStride(size_t plane) const override {
CHECK_LT(plane, pixmap_handle_.planes.size());
// Even though a ClientNativePixmapOpaque should not be mapped, we may still
// need to query the stride of each plane. See
// VideoFrame::WrapExternalGpuMemoryBuffer() for such a use case.
return base::checked_cast<int>(pixmap_handle_.planes[plane].stride);
}
NativePixmapHandle CloneHandleForIPC() const override {
return gfx::CloneHandleForIPC(pixmap_handle_);
}
private:
NativePixmapHandle pixmap_handle_;
};
} // namespace
class ClientNativePixmapFactoryDmabuf : public ClientNativePixmapFactory {
public:
explicit ClientNativePixmapFactoryDmabuf() {}
ClientNativePixmapFactoryDmabuf(const ClientNativePixmapFactoryDmabuf&) =
delete;
ClientNativePixmapFactoryDmabuf& operator=(
const ClientNativePixmapFactoryDmabuf&) = delete;
~ClientNativePixmapFactoryDmabuf() override {}
std::unique_ptr<ClientNativePixmap> ImportFromHandle(
gfx::NativePixmapHandle handle,
const gfx::Size& size,
gfx::BufferFormat format,
gfx::BufferUsage usage) override {
DCHECK(!handle.planes.empty());
switch (usage) {
case gfx::BufferUsage::SCANOUT_CPU_READ_WRITE:
case gfx::BufferUsage::GPU_READ_CPU_READ_WRITE:
case gfx::BufferUsage::SCANOUT_CAMERA_READ_WRITE:
case gfx::BufferUsage::CAMERA_AND_CPU_READ_WRITE:
case gfx::BufferUsage::SCANOUT_VEA_CPU_READ:
case gfx::BufferUsage::VEA_READ_CAMERA_AND_CPU_READ_WRITE:
case gfx::BufferUsage::SCANOUT_FRONT_RENDERING: {
if (!CanFitImageForSizeAndFormat(
handle, size, format, /*assume_single_memory_object=*/false)) {
DLOG(ERROR) << "Failed to verify the size and format of the handle.";
return nullptr;
}
for (size_t i = 0; i < handle.planes.size(); ++i) {
if (!base::IsValueInRangeForNumericType<size_t>(
handle.planes[i].offset) ||
!base::IsValueInRangeForNumericType<size_t>(
handle.planes[i].size)) {
return nullptr;
}
if (!handle.planes[i].fd.is_valid())
return nullptr;
const int fd = handle.planes[i].fd.get();
const off_t dma_buf_size = lseek(fd, /*offset=*/0, SEEK_END);
if (dma_buf_size == static_cast<off_t>(-1)) {
PLOG(ERROR) << "Failed to get the size of the dma-buf";
return nullptr;
}
if (lseek(fd, /*offset=*/0, SEEK_SET) == static_cast<off_t>(-1)) {
PLOG(ERROR) << "Failed to reset the file offset of the dma-buf";
return nullptr;
}
if (!base::IsValueInRangeForNumericType<size_t>(dma_buf_size))
return nullptr;
base::CheckedNumeric<uint64_t> size_to_map =
base::CheckAdd(handle.planes[i].size, handle.planes[i].offset);
if (!size_to_map.IsValid<size_t>())
return nullptr;
if (size_to_map.ValueOrDie<size_t>() >
base::checked_cast<size_t>(dma_buf_size)) {
return nullptr;
}
}
return ClientNativePixmapDmaBuf::ImportFromDmabuf(std::move(handle),
size, format);
}
case gfx::BufferUsage::GPU_READ:
case gfx::BufferUsage::SCANOUT:
case gfx::BufferUsage::SCANOUT_VDA_WRITE:
case gfx::BufferUsage::PROTECTED_SCANOUT:
case gfx::BufferUsage::PROTECTED_SCANOUT_VDA_WRITE:
return base::WrapUnique(
new ClientNativePixmapOpaque(std::move(handle)));
}
NOTREACHED();
}
};
ClientNativePixmapFactory* CreateClientNativePixmapFactoryDmabuf() {
return new ClientNativePixmapFactoryDmabuf();
}
} // namespace gfx
|