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// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef MEDIA_BASE_ANDROID_STREAM_TEXTURE_WRAPPER_H_
#define MEDIA_BASE_ANDROID_STREAM_TEXTURE_WRAPPER_H_
#include "base/task/single_thread_task_runner.h"
#include "base/unguessable_token.h"
#include "media/base/video_frame.h"
namespace media {
// StreamTextureWrapper encapsulates a StreamTexture's creation, initialization
// and registration for later retrieval (in the Browser process).
class MEDIA_EXPORT StreamTextureWrapper {
public:
using StreamTextureWrapperInitCB = base::OnceCallback<void(bool)>;
StreamTextureWrapper() {}
// Initialize the underlying StreamTexture.
// See StreamTextureWrapperImpl.
virtual void Initialize(
const base::RepeatingClosure& received_frame_cb,
scoped_refptr<base::SingleThreadTaskRunner> compositor_task_runner,
StreamTextureWrapperInitCB init_cb) = 0;
// Called whenever the video's natural size changes.
// See StreamTextureWrapperImpl.
virtual void UpdateTextureSize(const gfx::Size& natural_size) = 0;
// Returns the latest frame.
// See StreamTextureWrapperImpl.
virtual scoped_refptr<VideoFrame> GetCurrentFrame() = 0;
// Sends the StreamTexture to the browser process, to fulfill the request
// identified by |request_token|.
// See StreamTextureWrapperImpl.
virtual void ForwardStreamTextureForSurfaceRequest(
const base::UnguessableToken& request_token) = 0;
// Clears the |received_frame_cb| passed in Initialize().
// Should be safe to call from any thread.
virtual void ClearReceivedFrameCBOnAnyThread() = 0;
struct Deleter {
inline void operator()(StreamTextureWrapper* ptr) const { ptr->Destroy(); }
};
protected:
virtual ~StreamTextureWrapper() {}
// Safely destroys the StreamTextureWrapper.
// See StreamTextureWrapperImpl.
virtual void Destroy() = 0;
};
typedef std::unique_ptr<StreamTextureWrapper, StreamTextureWrapper::Deleter>
ScopedStreamTextureWrapper;
} // namespace media
#endif // MEDIA_BASE_ANDROID_STREAM_TEXTURE_WRAPPER_H_
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