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- // Copyright 2019 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_CHROMEOS_IMAGE_PROCESSOR_WITH_POOL_H_
- #define MEDIA_GPU_CHROMEOS_IMAGE_PROCESSOR_WITH_POOL_H_
- #include <memory>
- #include "base/containers/queue.h"
- #include "base/memory/raw_ptr.h"
- #include "base/memory/weak_ptr.h"
- #include "base/sequence_checker.h"
- #include "base/task/sequenced_task_runner.h"
- #include "media/base/video_frame.h"
- #include "media/gpu/chromeos/dmabuf_video_frame_pool.h"
- #include "media/gpu/chromeos/image_processor.h"
- #include "media/gpu/media_gpu_export.h"
- namespace media {
- // A simple client implementation of ImageProcessor.
- // By giving DmabufVideoFramePool, which provides VideoFrame for output, the
- // caller can process input frames without managing VideoFrame for output.
- class ImageProcessorWithPool {
- public:
- using FrameReadyCB = ImageProcessor::FrameReadyCB;
- // Initializes |frame_pool| and creates an ImageProcessorWithPool instance.
- // |num_frames| is the number of frames requested from |frame_pool|.
- // Returns a valid ImageProcessorWithPool instance if successful
- // otherwise returns any given error from the set of CroStatus::Codes.
- static CroStatus::Or<std::unique_ptr<ImageProcessorWithPool>> Create(
- std::unique_ptr<ImageProcessor> image_processor,
- DmabufVideoFramePool* const frame_pool,
- size_t num_frames,
- bool use_protected,
- const scoped_refptr<base::SequencedTaskRunner> task_runner);
- ~ImageProcessorWithPool();
- // Processes |frame| by |image_processor_|. The processed output frame will be
- // returned by |ready_cb|, which is called on |task_runner_|.
- void Process(scoped_refptr<VideoFrame> frame, FrameReadyCB ready_cb);
- // Returns true if there are pending frames.
- bool HasPendingFrames() const;
- // Abandons all pending process. After called, no previous frame will be
- // returned by |ready_cb|.
- void Reset();
- // Returns true if the image processor supports buffers allocated
- // incoherently. The MTK MDP3 image processor has coherency issues, but the
- // Libyuv image processor benefits greatly from incoherent allocations.
- bool SupportsIncoherentBufs() const {
- return image_processor_ && image_processor_->SupportsIncoherentBufs();
- }
- private:
- friend class VideoDecoderPipelineTest;
- ImageProcessorWithPool(
- std::unique_ptr<ImageProcessor> image_processor,
- DmabufVideoFramePool* const frame_pool,
- const scoped_refptr<base::SequencedTaskRunner> task_runner);
- // Tries to pass pending frames to |image_processor_|.
- void PumpProcessFrames();
- // Called when |image_processor_| finishes processing frames.
- void OnFrameProcessed(FrameReadyCB ready_cb, scoped_refptr<VideoFrame> frame);
- // The image processor for processing frames.
- std::unique_ptr<ImageProcessor> image_processor_;
- // The frame pool to allocate output frames of the image processor.
- // The caller should guarantee the pool alive during the lifetime of this
- // ImageProcessorWithPool instance.
- const raw_ptr<DmabufVideoFramePool> frame_pool_;
- // The pending input frames that wait for passing to |image_processor_|.
- base::queue<std::pair<scoped_refptr<VideoFrame>, FrameReadyCB>>
- pending_frames_;
- // Number of frames that are processed in |image_processor_|.
- size_t num_frames_in_ip_ = 0;
- // The main task runner and its checker. All methods should be called on
- // |task_runner_|.
- const scoped_refptr<base::SequencedTaskRunner> task_runner_;
- SEQUENCE_CHECKER(sequence_checker_);
- // WeakPtr of this instance and its factory, bound to |task_runner_|.
- base::WeakPtr<ImageProcessorWithPool> weak_this_;
- base::WeakPtrFactory<ImageProcessorWithPool> weak_this_factory_{this};
- };
- } // namespace media
- #endif // MEDIA_GPU_CHROMEOS_IMAGE_PROCESSOR_WITH_POOL_H_
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