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// Copyright 2018 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_GPU_TEST_VIDEO_PLAYER_VIDEO_PLAYER_H_
#define MEDIA_GPU_TEST_VIDEO_PLAYER_VIDEO_PLAYER_H_
#include <memory>
#include <vector>
#include "base/callback.h"
#include "base/macros.h"
#include "base/sequence_checker.h"
#include "base/synchronization/condition_variable.h"
#include "base/synchronization/lock.h"
#include "base/thread_annotations.h"
namespace media {
namespace test {
class FrameRenderer;
class Video;
class VideoDecoderClient;
class VideoFrameProcessor;
// Default timeout used when waiting for events.
constexpr base::TimeDelta kDefaultTimeout = base::TimeDelta::FromSeconds(10);
enum class VideoPlayerState : size_t {
kUninitialized = 0,
kIdle,
kDecoding,
kDestroyed,
};
enum class VideoPlayerEvent : size_t {
kFrameDecoded,
kFlushing,
kFlushDone,
kResetting,
kResetDone,
kNumEvents,
};
// The video player provides a framework to build video decode accelerator tests
// upon. It provides methods to manipulate video playback, and wait for specific
// events to occur.
class VideoPlayer {
public:
using EventCallback = base::RepeatingCallback<void(VideoPlayerEvent)>;
~VideoPlayer();
// Create an instance of the video player. The |video|, |frame_renderer| and
// |frame_processors| will not be owned by the video player. The caller should
// guarantee they outlive the video player.
static std::unique_ptr<VideoPlayer> Create(
const Video* video,
FrameRenderer* frame_renderer,
const std::vector<VideoFrameProcessor*>& frame_processors);
void Play();
void Stop();
void Reset();
void Flush();
// Get current media time.
base::TimeDelta GetCurrentTime() const;
// Get the current frame number.
size_t GetCurrentFrame() const;
// Get the current state of the video player.
VideoPlayerState GetState() const;
// Wait for an event to occur the specified number of times. All events that
// occurred since last calling this function will be taken into account. All
// events with different types will be consumed. Will return false if the
// specified timeout is exceeded while waiting for the events.
bool WaitForEvent(VideoPlayerEvent event,
size_t times = 1,
base::TimeDelta max_wait = kDefaultTimeout);
// Helper function to wait for a FlushDone event.
bool WaitForFlushDone();
// Helper function to wait for a ResetDone event.
bool WaitForResetDone();
// Helper function to wait for the specified number of FrameDecoded events.
bool WaitForFrameDecoded(size_t times);
// Get the number of times the specified event occurred.
size_t GetEventCount(VideoPlayerEvent event) const;
// Helper function to get the number of ResetDone events thrown.
size_t GetResetDoneCount() const;
// Helper function to get the number of FlushDone events thrown.
size_t GetFlushDoneCount() const;
// Helper function to get the number of FrameDecoded events thrown.
size_t GetFrameDecodedCount() const;
private:
VideoPlayer();
void Initialize(const Video* video,
FrameRenderer* frame_renderer,
const std::vector<VideoFrameProcessor*>& frame_processors);
void Destroy();
// Notify the client an event has occurred (e.g. frame decoded).
void NotifyEvent(VideoPlayerEvent event);
const Video* video_;
VideoPlayerState video_player_state_;
std::unique_ptr<VideoDecoderClient> decoder_client_;
mutable base::Lock event_lock_;
base::ConditionVariable event_cv_;
std::vector<VideoPlayerEvent> video_player_events_ GUARDED_BY(event_lock_);
size_t video_player_event_counts_[static_cast<size_t>(
VideoPlayerEvent::kNumEvents)] GUARDED_BY(event_lock_);
// The next event ID to start at, when waiting for events.
size_t event_id_ GUARDED_BY(event_lock_);
SEQUENCE_CHECKER(sequence_checker_);
DISALLOW_COPY_AND_ASSIGN(VideoPlayer);
};
} // namespace test
} // namespace media
#endif // MEDIA_GPU_TEST_VIDEO_PLAYER_VIDEO_PLAYER_H_