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72 lines
2.4 KiB
C++
72 lines
2.4 KiB
C++
/*
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* Copyright (c) 2015 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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//
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// This file contains the declaration of the VP9 packetizer class.
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// A packetizer object is created for each encoded video frame. The
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// constructor is called with the payload data and size.
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//
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// After creating the packetizer, the method NextPacket is called
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// repeatedly to get all packets for the frame. The method returns
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// false as long as there are more packets left to fetch.
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//
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#ifndef MODULES_RTP_RTCP_SOURCE_RTP_FORMAT_VP9_H_
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#define MODULES_RTP_RTCP_SOURCE_RTP_FORMAT_VP9_H_
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#include <stddef.h>
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#include <stdint.h>
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#include <vector>
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#include "api/array_view.h"
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#include "modules/rtp_rtcp/source/rtp_format.h"
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#include "modules/rtp_rtcp/source/rtp_packet_to_send.h"
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#include "modules/video_coding/codecs/vp9/include/vp9_globals.h"
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namespace webrtc {
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class RtpPacketizerVp9 : public RtpPacketizer {
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public:
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// The `payload` must be one encoded VP9 layer frame.
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RtpPacketizerVp9(rtc::ArrayView<const uint8_t> payload,
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PayloadSizeLimits limits,
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const RTPVideoHeaderVP9& hdr);
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~RtpPacketizerVp9() override;
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RtpPacketizerVp9(const RtpPacketizerVp9&) = delete;
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RtpPacketizerVp9& operator=(const RtpPacketizerVp9&) = delete;
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size_t NumPackets() const override;
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// Gets the next payload with VP9 payload header.
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// Write payload and set marker bit of the `packet`.
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// Returns true on success, false otherwise.
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bool NextPacket(RtpPacketToSend* packet) override;
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private:
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// Writes the payload descriptor header.
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// `layer_begin` and `layer_end` indicates the postision of the packet in
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// the layer frame. Returns false on failure.
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bool WriteHeader(bool layer_begin,
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bool layer_end,
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rtc::ArrayView<uint8_t> rtp_payload) const;
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const RTPVideoHeaderVP9 hdr_;
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const int header_size_;
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const int first_packet_extra_header_size_;
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rtc::ArrayView<const uint8_t> remaining_payload_;
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std::vector<int> payload_sizes_;
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std::vector<int>::const_iterator current_packet_;
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};
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} // namespace webrtc
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#endif // MODULES_RTP_RTCP_SOURCE_RTP_FORMAT_VP9_H_
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