54 lines
2.0 KiB
C
54 lines
2.0 KiB
C
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/*
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* Copyright (c) 2021 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_VIDEO_RTP_VIDEO_FRAME_ASSEMBLER_H_
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#define API_VIDEO_RTP_VIDEO_FRAME_ASSEMBLER_H_
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#include <cstdint>
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#include <memory>
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#include "absl/container/inlined_vector.h"
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#include "api/video/encoded_frame.h"
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#include "modules/rtp_rtcp/source/rtp_packet_received.h"
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namespace webrtc {
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// The RtpVideoFrameAssembler takes RtpPacketReceived and assembles them into
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// complete frames. A frame is considered complete when all packets of the frame
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// has been received, the bitstream data has successfully extracted, an ID has
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// been assigned, and all dependencies are known. Frame IDs are strictly
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// monotonic in decode order, dependencies are expressed as frame IDs.
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class RtpVideoFrameAssembler {
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public:
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// FrameVector is just a vector-like type of std::unique_ptr<EncodedFrame>.
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// The vector type may change without notice.
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using FrameVector = absl::InlinedVector<std::unique_ptr<EncodedFrame>, 3>;
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enum PayloadFormat { kRaw, kH264, kVp8, kVp9, kAv1, kGeneric };
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explicit RtpVideoFrameAssembler(PayloadFormat payload_format);
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RtpVideoFrameAssembler(const RtpVideoFrameAssembler& other) = delete;
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RtpVideoFrameAssembler& operator=(const RtpVideoFrameAssembler& other) =
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delete;
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~RtpVideoFrameAssembler();
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// Typically when a packet is inserted zero or one frame is completed. In the
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// case of RTP packets being inserted out of order then sometime multiple
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// frames could be completed from a single packet, hence the 'FrameVector'
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// return type.
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FrameVector InsertPacket(const RtpPacketReceived& packet);
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private:
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class Impl;
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std::unique_ptr<Impl> impl_;
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};
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} // namespace webrtc
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#endif // API_VIDEO_RTP_VIDEO_FRAME_ASSEMBLER_H_
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