chromium/media/capture/video/linux/v4l2_gpu_memory_buffer_tracker.cc

// 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 "media/capture/video/linux/v4l2_gpu_memory_buffer_tracker.h"

#include <optional>

#include "components/viz/common/resources/shared_image_format_utils.h"
#include "gpu/command_buffer/client/client_shared_image.h"
#include "gpu/command_buffer/client/shared_image_interface.h"
#include "media/capture/video/video_capture_buffer_handle.h"
#include "media/capture/video_capture_types.h"
#include "ui/gfx/geometry/size.h"

namespace media {

namespace {
// Converts the video pixel format |pixel_format| to gfx::BufferFormat.
std::optional<gfx::BufferFormat> ToBufferFormat(VideoPixelFormat pixel_format) { … }

gfx::BufferUsage GetBufferUsage(gfx::BufferFormat format) { … }
}  // namespace

V4L2GpuMemoryBufferTracker::V4L2GpuMemoryBufferTracker() = default;
V4L2GpuMemoryBufferTracker::~V4L2GpuMemoryBufferTracker() { … }

bool V4L2GpuMemoryBufferTracker::Init(const gfx::Size& dimensions,
                                      VideoPixelFormat format,
                                      const mojom::PlaneStridesPtr& strides) { … }

bool V4L2GpuMemoryBufferTracker::IsReusableForFormat(
    const gfx::Size& dimensions,
    VideoPixelFormat format,
    const mojom::PlaneStridesPtr& strides) { … }

std::unique_ptr<VideoCaptureBufferHandle>
V4L2GpuMemoryBufferTracker::GetMemoryMappedAccess() { … }

base::UnsafeSharedMemoryRegion
V4L2GpuMemoryBufferTracker::DuplicateAsUnsafeRegion() { … }

gfx::GpuMemoryBufferHandle
V4L2GpuMemoryBufferTracker::GetGpuMemoryBufferHandle() { … }

VideoCaptureBufferType V4L2GpuMemoryBufferTracker::GetBufferType() { … }

uint32_t V4L2GpuMemoryBufferTracker::GetMemorySizeInBytes() { … }

void V4L2GpuMemoryBufferTracker::OnContextLost() { … }

}  // namespace media