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ce80886bf2
Bug: webrtc:7219 Change-Id: I360f7df5554389274fcaef64070b9441ce0ef984 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/266486 Reviewed-by: Philip Eliasson <philipel@webrtc.org> Auto-Submit: Danil Chapovalov <danilchap@webrtc.org> Commit-Queue: Philip Eliasson <philipel@webrtc.org> Cr-Commit-Position: refs/heads/main@{#37351}
135 lines
4.5 KiB
C++
135 lines
4.5 KiB
C++
/*
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* Copyright (c) 2012 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 MODULES_VIDEO_CODING_VIDEO_CODING_IMPL_H_
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#define MODULES_VIDEO_CODING_VIDEO_CODING_IMPL_H_
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#include <memory>
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#include <string>
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#include <vector>
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#include "absl/types/optional.h"
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#include "api/field_trials_view.h"
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#include "api/sequence_checker.h"
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#include "modules/video_coding/decoder_database.h"
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#include "modules/video_coding/frame_buffer.h"
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#include "modules/video_coding/generic_decoder.h"
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#include "modules/video_coding/include/video_coding.h"
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#include "modules/video_coding/jitter_buffer.h"
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#include "modules/video_coding/receiver.h"
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#include "modules/video_coding/timing/timing.h"
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#include "rtc_base/one_time_event.h"
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#include "rtc_base/synchronization/mutex.h"
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#include "rtc_base/thread_annotations.h"
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#include "system_wrappers/include/clock.h"
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namespace webrtc {
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class VideoBitrateAllocator;
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class VideoBitrateAllocationObserver;
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namespace vcm {
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class VCMProcessTimer {
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public:
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static const int64_t kDefaultProcessIntervalMs = 1000;
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VCMProcessTimer(int64_t periodMs, Clock* clock)
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: _clock(clock),
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_periodMs(periodMs),
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_latestMs(_clock->TimeInMilliseconds()) {}
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int64_t Period() const;
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int64_t TimeUntilProcess() const;
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void Processed();
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private:
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Clock* _clock;
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int64_t _periodMs;
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int64_t _latestMs;
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};
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class VideoReceiver {
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public:
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VideoReceiver(Clock* clock,
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VCMTiming* timing,
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const FieldTrialsView& field_trials);
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~VideoReceiver();
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void RegisterReceiveCodec(uint8_t payload_type,
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const VideoDecoder::Settings& settings);
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void RegisterExternalDecoder(VideoDecoder* externalDecoder,
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uint8_t payloadType);
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int32_t RegisterReceiveCallback(VCMReceiveCallback* receiveCallback);
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int32_t RegisterFrameTypeCallback(VCMFrameTypeCallback* frameTypeCallback);
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int32_t RegisterPacketRequestCallback(VCMPacketRequestCallback* callback);
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int32_t Decode(uint16_t maxWaitTimeMs);
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int32_t IncomingPacket(const uint8_t* incomingPayload,
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size_t payloadLength,
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const RTPHeader& rtp_header,
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const RTPVideoHeader& video_header);
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void SetNackSettings(size_t max_nack_list_size,
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int max_packet_age_to_nack,
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int max_incomplete_time_ms);
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void Process();
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protected:
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int32_t Decode(const webrtc::VCMEncodedFrame& frame);
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int32_t RequestKeyFrame();
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private:
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// Used for DCHECKing thread correctness.
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// In build where DCHECKs are enabled, will return false before
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// DecoderThreadStarting is called, then true until DecoderThreadStopped
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// is called.
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// In builds where DCHECKs aren't enabled, it will return true.
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bool IsDecoderThreadRunning();
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SequenceChecker construction_thread_checker_;
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SequenceChecker decoder_thread_checker_;
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SequenceChecker module_thread_checker_;
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Clock* const clock_;
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Mutex process_mutex_;
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VCMTiming* _timing;
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VCMReceiver _receiver;
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VCMDecodedFrameCallback _decodedFrameCallback;
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// These callbacks are set on the construction thread before being attached
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// to the module thread or decoding started, so a lock is not required.
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VCMFrameTypeCallback* _frameTypeCallback;
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VCMPacketRequestCallback* _packetRequestCallback;
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// Used on both the module and decoder thread.
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bool _scheduleKeyRequest RTC_GUARDED_BY(process_mutex_);
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bool drop_frames_until_keyframe_ RTC_GUARDED_BY(process_mutex_);
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// Modified on the construction thread while not attached to the process
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// thread. Once attached to the process thread, its value is only read
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// so a lock is not required.
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size_t max_nack_list_size_;
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// Callbacks are set before the decoder thread starts.
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// Once the decoder thread has been started, usage of `_codecDataBase` moves
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// over to the decoder thread.
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VCMDecoderDataBase _codecDataBase;
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VCMProcessTimer _retransmissionTimer RTC_GUARDED_BY(module_thread_checker_);
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VCMProcessTimer _keyRequestTimer RTC_GUARDED_BY(module_thread_checker_);
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ThreadUnsafeOneTimeEvent first_frame_received_
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RTC_GUARDED_BY(decoder_thread_checker_);
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};
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} // namespace vcm
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} // namespace webrtc
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#endif // MODULES_VIDEO_CODING_VIDEO_CODING_IMPL_H_
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