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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_VAAPI_VAAPI_IMAGE_DECODER_H_
- #define MEDIA_GPU_VAAPI_VAAPI_IMAGE_DECODER_H_
- #include <stdint.h>
- #include <va/va.h>
- #include <memory>
- #include "base/callback_forward.h"
- #include "base/containers/span.h"
- #include "base/memory/scoped_refptr.h"
- #include "gpu/config/gpu_info.h"
- #include "third_party/skia/include/core/SkImageInfo.h"
- namespace gfx {
- class NativePixmapDmaBuf;
- } // namespace gfx
- namespace media {
- struct NativePixmapAndSizeInfo;
- class ScopedVASurface;
- class VaapiWrapper;
- enum class VaapiFunctions;
- using ReportErrorToUMACB = base::RepeatingCallback<void(VaapiFunctions)>;
- struct VAContextAndScopedVASurfaceDeleter {
- void operator()(ScopedVASurface* scoped_va_surface) const;
- };
- using ScopedVAContextAndSurface =
- std::unique_ptr<ScopedVASurface, VAContextAndScopedVASurfaceDeleter>;
- enum class VaapiImageDecodeStatus : uint32_t {
- kSuccess,
- kParseFailed,
- kUnsupportedImage,
- kUnsupportedSubsampling,
- kSurfaceCreationFailed,
- kSubmitVABuffersFailed,
- kExecuteDecodeFailed,
- kUnsupportedSurfaceFormat,
- kCannotGetImage,
- kCannotExportSurface,
- kInvalidState,
- };
- // This class abstracts the idea of VA-API format-specific decoders. It is the
- // responsibility of each subclass to initialize |vaapi_wrapper_| appropriately
- // for the purpose of performing hardware-accelerated image decodes of a
- // particular format (e.g. JPEG or WebP). Objects of this class are not
- // thread-safe, but they are also not thread-affine, i.e., the caller is free to
- // call the methods on any thread, but calls must be synchronized externally.
- class VaapiImageDecoder {
- public:
- VaapiImageDecoder(const VaapiImageDecoder&) = delete;
- VaapiImageDecoder& operator=(const VaapiImageDecoder&) = delete;
- virtual ~VaapiImageDecoder();
- // Initializes |vaapi_wrapper_| in kDecode mode with the
- // appropriate VAAPI profile and |error_uma_cb| for error reporting.
- virtual bool Initialize(const ReportErrorToUMACB& error_uma_cb);
- // Decodes a picture. It will fill VA-API parameters and call the
- // corresponding VA-API methods according to the image in |encoded_image|.
- // The image will be decoded into an internally allocated ScopedVASurface.
- // This VA surface will remain valid until the next Decode() call or
- // destruction of this class. Returns a VaapiImageDecodeStatus that will
- // indicate whether the decode succeeded or the reason it failed. Note that
- // the internal ScopedVASurface is destroyed on failure.
- virtual VaapiImageDecodeStatus Decode(
- base::span<const uint8_t> encoded_image);
- // Returns a pointer to the internally managed ScopedVASurface.
- virtual const ScopedVASurface* GetScopedVASurface() const;
- // Returns the type of image supported by this decoder.
- virtual gpu::ImageDecodeAcceleratorType GetType() const = 0;
- // Returns the type of mapping needed to convert the NativePixmapDmaBuf
- // returned by ExportAsNativePixmapDmaBuf() from YUV to RGB.
- virtual SkYUVColorSpace GetYUVColorSpace() const = 0;
- // Returns the image profile supported by this decoder.
- virtual gpu::ImageDecodeAcceleratorSupportedProfile GetSupportedProfile()
- const;
- // Exports the decoded data from the last Decode() call as a
- // gfx::NativePixmapDmaBuf. Returns nullptr on failure and sets *|status| to
- // the reason for failure. On success, the image decoder gives up ownership of
- // the buffer underlying the NativePixmapDmaBuf.
- virtual std::unique_ptr<NativePixmapAndSizeInfo> ExportAsNativePixmapDmaBuf(
- VaapiImageDecodeStatus* status);
- protected:
- explicit VaapiImageDecoder(VAProfile va_profile);
- ScopedVAContextAndSurface scoped_va_context_and_surface_;
- scoped_refptr<VaapiWrapper> vaapi_wrapper_;
- private:
- // Submits an image to the VA-API by filling its parameters and calling on the
- // corresponding methods according to the image in |encoded_image|. Returns a
- // VaapiImageDecodeStatus that will indicate whether the operation succeeded
- // or the reason it failed.
- virtual VaapiImageDecodeStatus AllocateVASurfaceAndSubmitVABuffers(
- base::span<const uint8_t> encoded_image) = 0;
- // The VA profile used for the current image decoder.
- const VAProfile va_profile_;
- };
- } // namespace media
- #endif // MEDIA_GPU_VAAPI_VAAPI_IMAGE_DECODER_H_
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