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e8a2b3c834
instead of rtc::RefCountInterface Bug: webrtc:15622 Change-Id: I085660a097a019c7aa58a7e3f0aceeedd9fcc8c0 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/325460 Commit-Queue: Harald Alvestrand <hta@webrtc.org> Reviewed-by: Tomas Gunnarsson <tommi@webrtc.org> Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org> Cr-Commit-Position: refs/heads/main@{#41050}
128 lines
4.3 KiB
C++
128 lines
4.3 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 <string>
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#include <vector>
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#include "api/ref_count.h"
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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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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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virtual void SetRTPTimestamp(uint32_t timestamp) = 0;
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// TODO(https://bugs.webrtc.org/14878): Change this to pure virtual after it
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// is implemented everywhere.
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virtual absl::optional<Timestamp> GetCaptureTimeIdentifier() const {
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return absl::nullopt;
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}
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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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virtual std::string GetMimeType() const {
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// TODO(bugs.webrtc.org/15579): Change this to pure virtual after it
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// is implemented everywhere.
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return "unknown/unknown";
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}
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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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virtual VideoFrameMetadata Metadata() const = 0;
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virtual void SetMetadata(const VideoFrameMetadata&) = 0;
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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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virtual rtc::ArrayView<const uint32_t> GetContributingSources() const = 0;
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// TODO(crbug.com/1453226): Change this to pure virtual after it
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// is implemented everywhere.
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virtual const absl::optional<uint16_t> SequenceNumber() const {
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return absl::nullopt;
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}
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virtual absl::optional<uint64_t> AbsoluteCaptureTimestamp() const = 0;
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enum class FrameType { kEmptyFrame, kAudioFrameSpeech, kAudioFrameCN };
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// TODO(crbug.com/1456628): Change this to pure virtual after it
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// is implemented everywhere.
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virtual FrameType Type() const { return FrameType::kEmptyFrame; }
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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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