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media / renderers / video_frame_shared_image_cache.h [blame]
// Copyright 2021 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_RENDERERS_VIDEO_FRAME_SHARED_IMAGE_CACHE_H_
#define MEDIA_RENDERERS_VIDEO_FRAME_SHARED_IMAGE_CACHE_H_
#include "media/base/media_export.h"
#include "media/base/video_frame.h"
namespace gpu {
class ClientSharedImage;
struct SyncToken;
} // namespace gpu
namespace viz {
class RasterContextProvider;
} // namespace viz
namespace media {
class MEDIA_EXPORT VideoFrameSharedImageCache {
public:
// Returns the cache Status on interaction with VideoFrameSharedImageCache.
// Specifies whether a new SharedImage was created or not based on VideoFrame
// id and SharedImage data.
enum class Status {
// The cached VideoFrame id matched.
kMatchedVideoFrameId,
// The cached SharedImage metadata (size, usage etc) matched.
kMatchedSharedImageMetaData,
// Mismatch of id/data, new SharedImage created.
kCreatedNewSharedImage,
};
struct CachedData {
CachedData(scoped_refptr<gpu::ClientSharedImage> shared_image,
const gpu::SyncToken& sync_token,
Status status);
~CachedData();
scoped_refptr<gpu::ClientSharedImage> shared_image;
gpu::SyncToken sync_token;
Status status;
};
VideoFrameSharedImageCache();
~VideoFrameSharedImageCache();
void ReleaseCachedData();
// Creates a new shared image if the `video_frame` data differs from that in
// `shared_image_`. This function can be called repeatedly to re-use
// `shared_image_` in the case of CPU backed VideoFrames. Returns the
// `shared_image_` along with Status on whether the shared image was created
// or reused.
CachedData GetSharedImage(const VideoFrame* video_frame,
viz::RasterContextProvider* raster_context_provider,
gpu::SharedImageUsageSet usage);
// Update the `sync_token_` to wait for after performing raster/gles tasks.
void UpdateSyncToken(const gpu::SyncToken& sync_token);
private:
scoped_refptr<viz::RasterContextProvider> provider_;
// Populated by GetSharedImage.
scoped_refptr<gpu::ClientSharedImage> shared_image_;
VideoFrame::ID video_frame_id_;
// The sync token initially generated on SharedImageInterface that can be
// updated through UpdateSyncToken by the client based on raster/gles usages.
// This allows to makes sure that on shared image destruction, we wait on
// previous raster/gles tasks to be completed properly.
gpu::SyncToken sync_token_;
};
} // namespace media
#endif // MEDIA_RENDERERS_VIDEO_FRAME_SHARED_IMAGE_CACHE_H_