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// Copyright 2021 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_VAAPI_VAAPI_IMAGE_PROCESSOR_BACKEND_H_
#define MEDIA_GPU_VAAPI_VAAPI_IMAGE_PROCESSOR_BACKEND_H_
#include <memory>
#include "base/containers/small_map.h"
#include "media/gpu/chromeos/image_processor_backend.h"
#include "media/gpu/media_gpu_export.h"
#include "ui/gfx/gpu_memory_buffer.h"
namespace media {
class VaapiWrapper;
class VASurface;
// ImageProcessor that is hardware accelerated with VA-API. This ImageProcessor
// supports only dma-buf and GpuMemoryBuffer VideoFrames for both input and
// output.
class VaapiImageProcessorBackend : public ImageProcessorBackend {
public:
VaapiImageProcessorBackend(const VaapiImageProcessorBackend&) = delete;
VaapiImageProcessorBackend& operator=(const VaapiImageProcessorBackend&) =
delete;
// Factory method to create a VaapiImageProcessorBackend for processing frames
// as specified by |input_config| and |output_config|. The provided |error_cb|
// will be posted to the same thread that executes Create() if an error occurs
// after initialization.
// Returns nullptr if it fails to create a VaapiImageProcessorBackend.
static std::unique_ptr<ImageProcessorBackend> Create(
const PortConfig& input_config,
const PortConfig& output_config,
OutputMode output_mode,
VideoRotation relative_rotation,
ErrorCB error_cb,
scoped_refptr<base::SequencedTaskRunner> backend_task_runner);
// ImageProcessor implementation.
void Process(scoped_refptr<VideoFrame> input_frame,
scoped_refptr<VideoFrame> output_frame,
FrameReadyCB cb) override;
void Reset() override;
private:
VaapiImageProcessorBackend(
const PortConfig& input_config,
const PortConfig& output_config,
OutputMode output_mode,
VideoRotation relative_rotation,
ErrorCB error_cb,
scoped_refptr<base::SequencedTaskRunner> backend_task_runner);
~VaapiImageProcessorBackend() override;
const VASurface* GetSurfaceForVideoFrame(scoped_refptr<VideoFrame> frame,
bool use_protected);
scoped_refptr<VaapiWrapper> vaapi_wrapper_;
bool needs_context_ = false;
// VASurfaces are created via importing dma-bufs into libva using
// |vaapi_wrapper_|->CreateVASurfaceForPixmap(). The following map keeps those
// VASurfaces for reuse according to the expectations of libva
// vaDestroySurfaces(): "Surfaces can only be destroyed after all contexts
// using these surfaces have been destroyed."
base::small_map<std::map<gfx::GpuMemoryBufferId, scoped_refptr<VASurface>>>
allocated_va_surfaces_;
};
} // namespace media
#endif // MEDIA_GPU_VAAPI_VAAPI_IMAGE_PROCESSOR_BACKEND_H_
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