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168d11cba9
It's unused in Chromium and internally - GetMetadata() provides sufficient information. Bug: chromium:1414370 Change-Id: Id93bdccbda85090c1aa2fabf5d6b7b79f2b1e2e6 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/292862 Reviewed-by: Harald Alvestrand <hta@webrtc.org> Auto-Submit: Tony Herre <herre@google.com> Commit-Queue: Tony Herre <herre@google.com> Cr-Commit-Position: refs/heads/main@{#39287}
115 lines
4.1 KiB
C++
115 lines
4.1 KiB
C++
/*
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* Copyright 2020 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef API_FRAME_TRANSFORMER_INTERFACE_H_
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#define API_FRAME_TRANSFORMER_INTERFACE_H_
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#include <memory>
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#include <vector>
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#include "api/scoped_refptr.h"
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#include "api/video/encoded_frame.h"
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#include "api/video/video_frame_metadata.h"
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#include "rtc_base/ref_count.h"
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namespace webrtc {
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// Owns the frame payload data.
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class TransformableFrameInterface {
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public:
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virtual ~TransformableFrameInterface() = default;
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// Returns the frame payload data. The data is valid until the next non-const
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// method call.
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virtual rtc::ArrayView<const uint8_t> GetData() const = 0;
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// Copies `data` into the owned frame payload data.
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virtual void SetData(rtc::ArrayView<const uint8_t> data) = 0;
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virtual uint8_t GetPayloadType() const = 0;
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virtual uint32_t GetSsrc() const = 0;
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virtual uint32_t GetTimestamp() const = 0;
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enum class Direction {
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kUnknown,
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kReceiver,
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kSender,
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};
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// TODO(crbug.com/1250638): Remove this distinction between receiver and
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// sender frames to allow received frames to be directly re-transmitted on
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// other PeerConnectionss.
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virtual Direction GetDirection() const { return Direction::kUnknown; }
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};
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class TransformableVideoFrameInterface : public TransformableFrameInterface {
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public:
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virtual ~TransformableVideoFrameInterface() = default;
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virtual bool IsKeyFrame() const = 0;
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// Returns data needed in the frame transformation logic; for example,
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// when the transformation applied to the frame is encryption/decryption, the
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// additional data holds the serialized generic frame descriptor extension
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// calculated in webrtc::RtpDescriptorAuthentication.
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// This has been superseeded by GetMetadata() and will be removed shortly.
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[[deprecated("https://crbug.com/1414370")]] virtual std::vector<uint8_t>
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GetAdditionalData() const = 0;
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virtual const VideoFrameMetadata& GetMetadata() const = 0;
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// TODO(https://crbug.com/webrtc/14709): Make pure virtual when Chromium MOCK
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// has implemented this.
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virtual void SetMetadata(const VideoFrameMetadata&) {}
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};
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// Extends the TransformableFrameInterface to expose audio-specific information.
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class TransformableAudioFrameInterface : public TransformableFrameInterface {
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public:
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virtual ~TransformableAudioFrameInterface() = default;
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// Exposes the frame header, enabling the interface clients to use the
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// information in the header as needed, for example to compile the list of
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// csrcs.
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virtual const RTPHeader& GetHeader() const = 0;
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virtual rtc::ArrayView<const uint32_t> GetContributingSources() const = 0;
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};
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// Objects implement this interface to be notified with the transformed frame.
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class TransformedFrameCallback : public rtc::RefCountInterface {
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public:
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virtual void OnTransformedFrame(
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std::unique_ptr<TransformableFrameInterface> frame) = 0;
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protected:
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~TransformedFrameCallback() override = default;
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};
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// Transforms encoded frames. The transformed frame is sent in a callback using
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// the TransformedFrameCallback interface (see above).
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class FrameTransformerInterface : public rtc::RefCountInterface {
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public:
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// Transforms `frame` using the implementing class' processing logic.
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virtual void Transform(
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std::unique_ptr<TransformableFrameInterface> transformable_frame) = 0;
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virtual void RegisterTransformedFrameCallback(
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rtc::scoped_refptr<TransformedFrameCallback>) {}
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virtual void RegisterTransformedFrameSinkCallback(
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rtc::scoped_refptr<TransformedFrameCallback>,
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uint32_t ssrc) {}
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virtual void UnregisterTransformedFrameCallback() {}
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virtual void UnregisterTransformedFrameSinkCallback(uint32_t ssrc) {}
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protected:
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~FrameTransformerInterface() override = default;
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};
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} // namespace webrtc
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#endif // API_FRAME_TRANSFORMER_INTERFACE_H_
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