blob: 72b0c431e4d65e56998a81ef1af58f2119a4302d [file] [log] [blame]
// Copyright (c) 2013 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_CAPTURE_VIDEO_VIDEO_CAPTURE_BUFFER_POOL_IMPL_H_
#define MEDIA_CAPTURE_VIDEO_VIDEO_CAPTURE_BUFFER_POOL_IMPL_H_
#include <stddef.h>
#include <map>
#include "base/files/file.h"
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/memory/shared_memory.h"
#include "base/process/process.h"
#include "base/synchronization/lock.h"
#include "build/build_config.h"
#include "media/base/video_frame.h"
#include "media/capture/capture_export.h"
#include "media/capture/video/video_capture_buffer_handle.h"
#include "media/capture/video/video_capture_buffer_pool.h"
#include "media/capture/video/video_capture_buffer_tracker_factory.h"
#include "media/capture/video_capture_types.h"
#include "ui/gfx/geometry/size.h"
#include "ui/gfx/gpu_memory_buffer.h"
namespace media {
class CAPTURE_EXPORT VideoCaptureBufferPoolImpl
: public VideoCaptureBufferPool {
public:
explicit VideoCaptureBufferPoolImpl(
std::unique_ptr<VideoCaptureBufferTrackerFactory> buffer_tracker_factory,
int count);
// VideoCaptureBufferPool implementation.
mojo::ScopedSharedBufferHandle GetHandleForInterProcessTransit(
int buffer_id,
bool read_only) override;
base::SharedMemoryHandle GetNonOwnedSharedMemoryHandleForLegacyIPC(
int buffer_id) override;
std::unique_ptr<VideoCaptureBufferHandle> GetHandleForInProcessAccess(
int buffer_id) override;
int ReserveForProducer(const gfx::Size& dimensions,
media::VideoPixelFormat format,
media::VideoPixelStorage storage,
int frame_feedback_id,
int* buffer_id_to_drop) override;
void RelinquishProducerReservation(int buffer_id) override;
int ResurrectLastForProducer(const gfx::Size& dimensions,
media::VideoPixelFormat format,
media::VideoPixelStorage storage) override;
double GetBufferPoolUtilization() const override;
void HoldForConsumers(int buffer_id, int num_clients) override;
void RelinquishConsumerHold(int buffer_id, int num_clients) override;
private:
friend class base::RefCountedThreadSafe<VideoCaptureBufferPoolImpl>;
~VideoCaptureBufferPoolImpl() override;
int ReserveForProducerInternal(const gfx::Size& dimensions,
media::VideoPixelFormat format,
media::VideoPixelStorage storage,
int frame_feedback_id,
int* tracker_id_to_drop);
VideoCaptureBufferTracker* GetTracker(int buffer_id);
// The max number of buffers that the pool is allowed to have at any moment.
const int count_;
// Protects everything below it.
mutable base::Lock lock_;
// The ID of the next buffer.
int next_buffer_id_;
// The ID of the buffer last relinquished by the producer (a candidate for
// resurrection).
int last_relinquished_buffer_id_;
// The buffers, indexed by the first parameter, a buffer id.
std::map<int, std::unique_ptr<VideoCaptureBufferTracker>> trackers_;
const std::unique_ptr<VideoCaptureBufferTrackerFactory>
buffer_tracker_factory_;
DISALLOW_IMPLICIT_CONSTRUCTORS(VideoCaptureBufferPoolImpl);
};
} // namespace media
#endif // MEDIA_CAPTURE_VIDEO_VIDEO_CAPTURE_BUFFER_POOL_IMPL_H_