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// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef MEDIA_VIDEO_CAPTURE_LINUX_V4L2_CAPTURE_DELEGATE_MULTI_PLANE_H_
#define MEDIA_VIDEO_CAPTURE_LINUX_V4L2_CAPTURE_DELEGATE_MULTI_PLANE_H_
#include "base/memory/ref_counted.h"
#include "media/video/capture/linux/v4l2_capture_delegate.h"
#if defined(OS_OPENBSD)
#error "OpenBSD does not support MPlane capture API."
#endif
namespace base {
class SingleThreadTaskRunner;
} // namespace base
namespace media {
// V4L2 specifics for MPLANE API.
class V4L2CaptureDelegateMultiPlane final : public V4L2CaptureDelegate {
public:
V4L2CaptureDelegateMultiPlane(
const VideoCaptureDevice::Name& device_name,
const scoped_refptr<base::SingleThreadTaskRunner>& v4l2_task_runner,
int power_line_frequency);
private:
// BufferTracker derivation to implement construction semantics for MPLANE.
class BufferTrackerMPlane final : public BufferTracker {
public:
bool Init(int fd, const v4l2_buffer& buffer) override;
private:
~BufferTrackerMPlane() override {}
};
~V4L2CaptureDelegateMultiPlane() override;
// V4L2CaptureDelegate virtual methods implementation.
scoped_refptr<BufferTracker> CreateBufferTracker() const override;
bool FillV4L2Format(v4l2_format* format,
uint32_t width,
uint32_t height,
uint32_t pixelformat_fourcc) const override;
void FinishFillingV4L2Buffer(v4l2_buffer* buffer) const override;
void SendBuffer(const scoped_refptr<BufferTracker>& buffer_tracker,
const v4l2_format& format) const override;
// Vector to allocate and track as many v4l2_plane structs as planes, needed
// for v4l2_buffer.m.planes. This is a scratchpad marked mutable to enable
// using it in otherwise const methods.
mutable std::vector<struct v4l2_plane> v4l2_planes_;
};
} // namespace media
#endif // MEDIA_VIDEO_CAPTURE_LINUX_V4L2_CAPTURE_DELEGATE_SINGLE_PLANE_H_
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