modules/video_coding refactorings
The main purpose was the interface-> include rename, but other files were also moved, eliminating the "main" dir. To avoid breaking downstream, the "interface" directories were copied into a new "video_coding/include" dir. The old headers got pragma warnings added about deprecation (a very short deprecation since I plan to remove them as soon downstream is updated). Other files also moved: video_coding/main/source -> video_coding video_coding/main/test -> video_coding/test BUG=webrtc:5095 TESTED=Passing compile-trybots with --clobber flag: git cl try --clobber --bot=win_compile_rel --bot=linux_compile_rel --bot=android_compile_rel --bot=mac_compile_rel --bot=ios_rel --bot=linux_gn_rel --bot=win_x64_gn_rel --bot=mac_x64_gn_rel --bot=android_gn_rel -m tryserver.webrtc R=stefan@webrtc.org, tommi@webrtc.org Review URL: https://codereview.webrtc.org/1417283007 . Cr-Commit-Position: refs/heads/master@{#10694}
This commit is contained in:
Henrik Kjellander
578
webrtc/modules/video_coding/video_receiver.cc
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578
webrtc/modules/video_coding/video_receiver.cc
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@ -0,0 +1,578 @@
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/*
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* Copyright (c) 2013 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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#include "webrtc/base/checks.h"
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#include "webrtc/base/logging.h"
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#include "webrtc/base/trace_event.h"
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#include "webrtc/common_types.h"
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#include "webrtc/common_video/libyuv/include/webrtc_libyuv.h"
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#include "webrtc/modules/video_coding/include/video_codec_interface.h"
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#include "webrtc/modules/video_coding/encoded_frame.h"
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#include "webrtc/modules/video_coding/jitter_buffer.h"
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#include "webrtc/modules/video_coding/packet.h"
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#include "webrtc/modules/video_coding/video_coding_impl.h"
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#include "webrtc/system_wrappers/include/clock.h"
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// #define DEBUG_DECODER_BIT_STREAM
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namespace webrtc {
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namespace vcm {
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VideoReceiver::VideoReceiver(Clock* clock, EventFactory* event_factory)
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: clock_(clock),
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process_crit_sect_(CriticalSectionWrapper::CreateCriticalSection()),
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_receiveCritSect(CriticalSectionWrapper::CreateCriticalSection()),
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_timing(clock_),
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_receiver(&_timing, clock_, event_factory),
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_decodedFrameCallback(_timing, clock_),
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_frameTypeCallback(NULL),
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_receiveStatsCallback(NULL),
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_decoderTimingCallback(NULL),
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_packetRequestCallback(NULL),
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render_buffer_callback_(NULL),
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_decoder(NULL),
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#ifdef DEBUG_DECODER_BIT_STREAM
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_bitStreamBeforeDecoder(NULL),
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#endif
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_frameFromFile(),
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_scheduleKeyRequest(false),
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max_nack_list_size_(0),
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pre_decode_image_callback_(NULL),
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_codecDataBase(nullptr, nullptr),
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_receiveStatsTimer(1000, clock_),
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_retransmissionTimer(10, clock_),
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_keyRequestTimer(500, clock_) {
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assert(clock_);
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#ifdef DEBUG_DECODER_BIT_STREAM
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_bitStreamBeforeDecoder = fopen("decoderBitStream.bit", "wb");
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#endif
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}
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VideoReceiver::~VideoReceiver() {
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delete _receiveCritSect;
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#ifdef DEBUG_DECODER_BIT_STREAM
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fclose(_bitStreamBeforeDecoder);
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#endif
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}
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int32_t VideoReceiver::Process() {
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int32_t returnValue = VCM_OK;
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// Receive-side statistics
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if (_receiveStatsTimer.TimeUntilProcess() == 0) {
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_receiveStatsTimer.Processed();
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CriticalSectionScoped cs(process_crit_sect_.get());
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if (_receiveStatsCallback != NULL) {
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uint32_t bitRate;
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uint32_t frameRate;
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_receiver.ReceiveStatistics(&bitRate, &frameRate);
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_receiveStatsCallback->OnReceiveRatesUpdated(bitRate, frameRate);
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}
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if (_decoderTimingCallback != NULL) {
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int decode_ms;
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int max_decode_ms;
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int current_delay_ms;
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int target_delay_ms;
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int jitter_buffer_ms;
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int min_playout_delay_ms;
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int render_delay_ms;
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_timing.GetTimings(&decode_ms,
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&max_decode_ms,
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¤t_delay_ms,
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&target_delay_ms,
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&jitter_buffer_ms,
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&min_playout_delay_ms,
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&render_delay_ms);
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_decoderTimingCallback->OnDecoderTiming(decode_ms,
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max_decode_ms,
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current_delay_ms,
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target_delay_ms,
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jitter_buffer_ms,
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min_playout_delay_ms,
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render_delay_ms);
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}
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// Size of render buffer.
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if (render_buffer_callback_) {
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int buffer_size_ms = _receiver.RenderBufferSizeMs();
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render_buffer_callback_->RenderBufferSizeMs(buffer_size_ms);
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}
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}
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// Key frame requests
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if (_keyRequestTimer.TimeUntilProcess() == 0) {
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_keyRequestTimer.Processed();
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bool request_key_frame = false;
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{
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CriticalSectionScoped cs(process_crit_sect_.get());
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request_key_frame = _scheduleKeyRequest && _frameTypeCallback != NULL;
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}
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if (request_key_frame) {
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const int32_t ret = RequestKeyFrame();
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if (ret != VCM_OK && returnValue == VCM_OK) {
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returnValue = ret;
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}
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}
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}
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// Packet retransmission requests
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// TODO(holmer): Add API for changing Process interval and make sure it's
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// disabled when NACK is off.
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if (_retransmissionTimer.TimeUntilProcess() == 0) {
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_retransmissionTimer.Processed();
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bool callback_registered = false;
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uint16_t length;
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{
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CriticalSectionScoped cs(process_crit_sect_.get());
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length = max_nack_list_size_;
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callback_registered = _packetRequestCallback != NULL;
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}
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if (callback_registered && length > 0) {
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// Collect sequence numbers from the default receiver.
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bool request_key_frame = false;
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std::vector<uint16_t> nackList = _receiver.NackList(&request_key_frame);
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int32_t ret = VCM_OK;
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if (request_key_frame) {
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ret = RequestKeyFrame();
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if (ret != VCM_OK && returnValue == VCM_OK) {
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returnValue = ret;
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}
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}
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if (ret == VCM_OK && !nackList.empty()) {
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CriticalSectionScoped cs(process_crit_sect_.get());
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if (_packetRequestCallback != NULL) {
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_packetRequestCallback->ResendPackets(&nackList[0], nackList.size());
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}
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}
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}
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}
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return returnValue;
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}
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int64_t VideoReceiver::TimeUntilNextProcess() {
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int64_t timeUntilNextProcess = _receiveStatsTimer.TimeUntilProcess();
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if (_receiver.NackMode() != kNoNack) {
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// We need a Process call more often if we are relying on
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// retransmissions
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timeUntilNextProcess =
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VCM_MIN(timeUntilNextProcess, _retransmissionTimer.TimeUntilProcess());
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}
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timeUntilNextProcess =
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VCM_MIN(timeUntilNextProcess, _keyRequestTimer.TimeUntilProcess());
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return timeUntilNextProcess;
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}
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int32_t VideoReceiver::SetReceiveChannelParameters(int64_t rtt) {
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CriticalSectionScoped receiveCs(_receiveCritSect);
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_receiver.UpdateRtt(rtt);
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return 0;
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}
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// Enable or disable a video protection method.
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// Note: This API should be deprecated, as it does not offer a distinction
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// between the protection method and decoding with or without errors. If such a
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// behavior is desired, use the following API: SetReceiverRobustnessMode.
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int32_t VideoReceiver::SetVideoProtection(VCMVideoProtection videoProtection,
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bool enable) {
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// By default, do not decode with errors.
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_receiver.SetDecodeErrorMode(kNoErrors);
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switch (videoProtection) {
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case kProtectionNack: {
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RTC_DCHECK(enable);
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_receiver.SetNackMode(kNack, -1, -1);
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break;
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}
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case kProtectionNackFEC: {
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CriticalSectionScoped cs(_receiveCritSect);
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RTC_DCHECK(enable);
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_receiver.SetNackMode(kNack, media_optimization::kLowRttNackMs, -1);
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_receiver.SetDecodeErrorMode(kNoErrors);
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break;
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}
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case kProtectionFEC:
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case kProtectionNone:
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// No receiver-side protection.
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RTC_DCHECK(enable);
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_receiver.SetNackMode(kNoNack, -1, -1);
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_receiver.SetDecodeErrorMode(kWithErrors);
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break;
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}
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return VCM_OK;
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}
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// Register a receive callback. Will be called whenever there is a new frame
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// ready for rendering.
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int32_t VideoReceiver::RegisterReceiveCallback(
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VCMReceiveCallback* receiveCallback) {
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CriticalSectionScoped cs(_receiveCritSect);
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_decodedFrameCallback.SetUserReceiveCallback(receiveCallback);
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return VCM_OK;
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}
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int32_t VideoReceiver::RegisterReceiveStatisticsCallback(
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VCMReceiveStatisticsCallback* receiveStats) {
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CriticalSectionScoped cs(process_crit_sect_.get());
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_receiver.RegisterStatsCallback(receiveStats);
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_receiveStatsCallback = receiveStats;
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return VCM_OK;
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}
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int32_t VideoReceiver::RegisterDecoderTimingCallback(
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VCMDecoderTimingCallback* decoderTiming) {
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CriticalSectionScoped cs(process_crit_sect_.get());
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_decoderTimingCallback = decoderTiming;
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return VCM_OK;
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}
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// Register an externally defined decoder/render object.
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// Can be a decoder only or a decoder coupled with a renderer.
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int32_t VideoReceiver::RegisterExternalDecoder(VideoDecoder* externalDecoder,
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uint8_t payloadType,
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bool internalRenderTiming) {
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CriticalSectionScoped cs(_receiveCritSect);
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if (externalDecoder == NULL) {
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// Make sure the VCM updates the decoder next time it decodes.
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_decoder = NULL;
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return _codecDataBase.DeregisterExternalDecoder(payloadType) ? 0 : -1;
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}
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return _codecDataBase.RegisterExternalDecoder(
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externalDecoder, payloadType, internalRenderTiming)
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? 0
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: -1;
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}
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// Register a frame type request callback.
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int32_t VideoReceiver::RegisterFrameTypeCallback(
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VCMFrameTypeCallback* frameTypeCallback) {
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CriticalSectionScoped cs(process_crit_sect_.get());
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_frameTypeCallback = frameTypeCallback;
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return VCM_OK;
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}
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int32_t VideoReceiver::RegisterPacketRequestCallback(
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VCMPacketRequestCallback* callback) {
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CriticalSectionScoped cs(process_crit_sect_.get());
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_packetRequestCallback = callback;
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return VCM_OK;
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}
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int VideoReceiver::RegisterRenderBufferSizeCallback(
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VCMRenderBufferSizeCallback* callback) {
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CriticalSectionScoped cs(process_crit_sect_.get());
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render_buffer_callback_ = callback;
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return VCM_OK;
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}
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void VideoReceiver::TriggerDecoderShutdown() {
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_receiver.TriggerDecoderShutdown();
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}
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// Decode next frame, blocking.
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// Should be called as often as possible to get the most out of the decoder.
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int32_t VideoReceiver::Decode(uint16_t maxWaitTimeMs) {
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int64_t nextRenderTimeMs;
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bool supports_render_scheduling;
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{
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CriticalSectionScoped cs(_receiveCritSect);
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supports_render_scheduling = _codecDataBase.SupportsRenderScheduling();
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}
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VCMEncodedFrame* frame = _receiver.FrameForDecoding(
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maxWaitTimeMs, nextRenderTimeMs, supports_render_scheduling);
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if (frame == NULL) {
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return VCM_FRAME_NOT_READY;
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} else {
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CriticalSectionScoped cs(_receiveCritSect);
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// If this frame was too late, we should adjust the delay accordingly
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_timing.UpdateCurrentDelay(frame->RenderTimeMs(),
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clock_->TimeInMilliseconds());
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if (pre_decode_image_callback_) {
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EncodedImage encoded_image(frame->EncodedImage());
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int qp = -1;
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if (qp_parser_.GetQp(*frame, &qp)) {
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encoded_image.qp_ = qp;
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}
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pre_decode_image_callback_->Encoded(
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encoded_image, frame->CodecSpecific(), NULL);
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}
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#ifdef DEBUG_DECODER_BIT_STREAM
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if (_bitStreamBeforeDecoder != NULL) {
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// Write bit stream to file for debugging purposes
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if (fwrite(
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frame->Buffer(), 1, frame->Length(), _bitStreamBeforeDecoder) !=
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frame->Length()) {
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return -1;
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}
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}
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#endif
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const int32_t ret = Decode(*frame);
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_receiver.ReleaseFrame(frame);
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frame = NULL;
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if (ret != VCM_OK) {
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return ret;
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}
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}
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return VCM_OK;
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}
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int32_t VideoReceiver::RequestSliceLossIndication(
|
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const uint64_t pictureID) const {
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TRACE_EVENT1("webrtc", "RequestSLI", "picture_id", pictureID);
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CriticalSectionScoped cs(process_crit_sect_.get());
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if (_frameTypeCallback != NULL) {
|
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const int32_t ret =
|
||||
_frameTypeCallback->SliceLossIndicationRequest(pictureID);
|
||||
if (ret < 0) {
|
||||
return ret;
|
||||
}
|
||||
} else {
|
||||
return VCM_MISSING_CALLBACK;
|
||||
}
|
||||
return VCM_OK;
|
||||
}
|
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int32_t VideoReceiver::RequestKeyFrame() {
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TRACE_EVENT0("webrtc", "RequestKeyFrame");
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CriticalSectionScoped process_cs(process_crit_sect_.get());
|
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if (_frameTypeCallback != NULL) {
|
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const int32_t ret = _frameTypeCallback->RequestKeyFrame();
|
||||
if (ret < 0) {
|
||||
return ret;
|
||||
}
|
||||
_scheduleKeyRequest = false;
|
||||
} else {
|
||||
return VCM_MISSING_CALLBACK;
|
||||
}
|
||||
return VCM_OK;
|
||||
}
|
||||
|
||||
// Must be called from inside the receive side critical section.
|
||||
int32_t VideoReceiver::Decode(const VCMEncodedFrame& frame) {
|
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TRACE_EVENT_ASYNC_STEP1("webrtc",
|
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"Video",
|
||||
frame.TimeStamp(),
|
||||
"Decode",
|
||||
"type",
|
||||
frame.FrameType());
|
||||
// Change decoder if payload type has changed
|
||||
const bool renderTimingBefore = _codecDataBase.SupportsRenderScheduling();
|
||||
_decoder =
|
||||
_codecDataBase.GetDecoder(frame.PayloadType(), &_decodedFrameCallback);
|
||||
if (renderTimingBefore != _codecDataBase.SupportsRenderScheduling()) {
|
||||
// Make sure we reset the decode time estimate since it will
|
||||
// be zero for codecs without render timing.
|
||||
_timing.ResetDecodeTime();
|
||||
}
|
||||
if (_decoder == NULL) {
|
||||
return VCM_NO_CODEC_REGISTERED;
|
||||
}
|
||||
// Decode a frame
|
||||
int32_t ret = _decoder->Decode(frame, clock_->TimeInMilliseconds());
|
||||
|
||||
// Check for failed decoding, run frame type request callback if needed.
|
||||
bool request_key_frame = false;
|
||||
if (ret < 0) {
|
||||
if (ret == VCM_ERROR_REQUEST_SLI) {
|
||||
return RequestSliceLossIndication(
|
||||
_decodedFrameCallback.LastReceivedPictureID() + 1);
|
||||
} else {
|
||||
request_key_frame = true;
|
||||
}
|
||||
} else if (ret == VCM_REQUEST_SLI) {
|
||||
ret = RequestSliceLossIndication(
|
||||
_decodedFrameCallback.LastReceivedPictureID() + 1);
|
||||
}
|
||||
if (!frame.Complete() || frame.MissingFrame()) {
|
||||
request_key_frame = true;
|
||||
ret = VCM_OK;
|
||||
}
|
||||
if (request_key_frame) {
|
||||
CriticalSectionScoped cs(process_crit_sect_.get());
|
||||
_scheduleKeyRequest = true;
|
||||
}
|
||||
TRACE_EVENT_ASYNC_END0("webrtc", "Video", frame.TimeStamp());
|
||||
return ret;
|
||||
}
|
||||
|
||||
// Reset the decoder state
|
||||
int32_t VideoReceiver::ResetDecoder() {
|
||||
bool reset_key_request = false;
|
||||
{
|
||||
CriticalSectionScoped cs(_receiveCritSect);
|
||||
if (_decoder != NULL) {
|
||||
_receiver.Reset();
|
||||
_timing.Reset();
|
||||
reset_key_request = true;
|
||||
_decoder->Reset();
|
||||
}
|
||||
}
|
||||
if (reset_key_request) {
|
||||
CriticalSectionScoped cs(process_crit_sect_.get());
|
||||
_scheduleKeyRequest = false;
|
||||
}
|
||||
return VCM_OK;
|
||||
}
|
||||
|
||||
// Register possible receive codecs, can be called multiple times
|
||||
int32_t VideoReceiver::RegisterReceiveCodec(const VideoCodec* receiveCodec,
|
||||
int32_t numberOfCores,
|
||||
bool requireKeyFrame) {
|
||||
CriticalSectionScoped cs(_receiveCritSect);
|
||||
if (receiveCodec == NULL) {
|
||||
return VCM_PARAMETER_ERROR;
|
||||
}
|
||||
if (!_codecDataBase.RegisterReceiveCodec(
|
||||
receiveCodec, numberOfCores, requireKeyFrame)) {
|
||||
return -1;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
// Get current received codec
|
||||
int32_t VideoReceiver::ReceiveCodec(VideoCodec* currentReceiveCodec) const {
|
||||
CriticalSectionScoped cs(_receiveCritSect);
|
||||
if (currentReceiveCodec == NULL) {
|
||||
return VCM_PARAMETER_ERROR;
|
||||
}
|
||||
return _codecDataBase.ReceiveCodec(currentReceiveCodec) ? 0 : -1;
|
||||
}
|
||||
|
||||
// Get current received codec
|
||||
VideoCodecType VideoReceiver::ReceiveCodec() const {
|
||||
CriticalSectionScoped cs(_receiveCritSect);
|
||||
return _codecDataBase.ReceiveCodec();
|
||||
}
|
||||
|
||||
// Incoming packet from network parsed and ready for decode, non blocking.
|
||||
int32_t VideoReceiver::IncomingPacket(const uint8_t* incomingPayload,
|
||||
size_t payloadLength,
|
||||
const WebRtcRTPHeader& rtpInfo) {
|
||||
if (rtpInfo.frameType == kVideoFrameKey) {
|
||||
TRACE_EVENT1("webrtc",
|
||||
"VCM::PacketKeyFrame",
|
||||
"seqnum",
|
||||
rtpInfo.header.sequenceNumber);
|
||||
}
|
||||
if (incomingPayload == NULL) {
|
||||
// The jitter buffer doesn't handle non-zero payload lengths for packets
|
||||
// without payload.
|
||||
// TODO(holmer): We should fix this in the jitter buffer.
|
||||
payloadLength = 0;
|
||||
}
|
||||
const VCMPacket packet(incomingPayload, payloadLength, rtpInfo);
|
||||
int32_t ret = _receiver.InsertPacket(packet, rtpInfo.type.Video.width,
|
||||
rtpInfo.type.Video.height);
|
||||
// TODO(holmer): Investigate if this somehow should use the key frame
|
||||
// request scheduling to throttle the requests.
|
||||
if (ret == VCM_FLUSH_INDICATOR) {
|
||||
RequestKeyFrame();
|
||||
ResetDecoder();
|
||||
} else if (ret < 0) {
|
||||
return ret;
|
||||
}
|
||||
return VCM_OK;
|
||||
}
|
||||
|
||||
// Minimum playout delay (used for lip-sync). This is the minimum delay required
|
||||
// to sync with audio. Not included in VideoCodingModule::Delay()
|
||||
// Defaults to 0 ms.
|
||||
int32_t VideoReceiver::SetMinimumPlayoutDelay(uint32_t minPlayoutDelayMs) {
|
||||
_timing.set_min_playout_delay(minPlayoutDelayMs);
|
||||
return VCM_OK;
|
||||
}
|
||||
|
||||
// The estimated delay caused by rendering, defaults to
|
||||
// kDefaultRenderDelayMs = 10 ms
|
||||
int32_t VideoReceiver::SetRenderDelay(uint32_t timeMS) {
|
||||
_timing.set_render_delay(timeMS);
|
||||
return VCM_OK;
|
||||
}
|
||||
|
||||
// Current video delay
|
||||
int32_t VideoReceiver::Delay() const { return _timing.TargetVideoDelay(); }
|
||||
|
||||
uint32_t VideoReceiver::DiscardedPackets() const {
|
||||
return _receiver.DiscardedPackets();
|
||||
}
|
||||
|
||||
int VideoReceiver::SetReceiverRobustnessMode(
|
||||
ReceiverRobustness robustnessMode,
|
||||
VCMDecodeErrorMode decode_error_mode) {
|
||||
CriticalSectionScoped cs(_receiveCritSect);
|
||||
switch (robustnessMode) {
|
||||
case VideoCodingModule::kNone:
|
||||
_receiver.SetNackMode(kNoNack, -1, -1);
|
||||
break;
|
||||
case VideoCodingModule::kHardNack:
|
||||
// Always wait for retransmissions (except when decoding with errors).
|
||||
_receiver.SetNackMode(kNack, -1, -1);
|
||||
break;
|
||||
case VideoCodingModule::kSoftNack:
|
||||
#if 1
|
||||
assert(false); // TODO(hlundin): Not completed.
|
||||
return VCM_NOT_IMPLEMENTED;
|
||||
#else
|
||||
// Enable hybrid NACK/FEC. Always wait for retransmissions and don't add
|
||||
// extra delay when RTT is above kLowRttNackMs.
|
||||
_receiver.SetNackMode(kNack, media_optimization::kLowRttNackMs, -1);
|
||||
break;
|
||||
#endif
|
||||
case VideoCodingModule::kReferenceSelection:
|
||||
#if 1
|
||||
assert(false); // TODO(hlundin): Not completed.
|
||||
return VCM_NOT_IMPLEMENTED;
|
||||
#else
|
||||
if (decode_error_mode == kNoErrors) {
|
||||
return VCM_PARAMETER_ERROR;
|
||||
}
|
||||
_receiver.SetNackMode(kNoNack, -1, -1);
|
||||
break;
|
||||
#endif
|
||||
}
|
||||
_receiver.SetDecodeErrorMode(decode_error_mode);
|
||||
return VCM_OK;
|
||||
}
|
||||
|
||||
void VideoReceiver::SetDecodeErrorMode(VCMDecodeErrorMode decode_error_mode) {
|
||||
CriticalSectionScoped cs(_receiveCritSect);
|
||||
_receiver.SetDecodeErrorMode(decode_error_mode);
|
||||
}
|
||||
|
||||
void VideoReceiver::SetNackSettings(size_t max_nack_list_size,
|
||||
int max_packet_age_to_nack,
|
||||
int max_incomplete_time_ms) {
|
||||
if (max_nack_list_size != 0) {
|
||||
CriticalSectionScoped process_cs(process_crit_sect_.get());
|
||||
max_nack_list_size_ = max_nack_list_size;
|
||||
}
|
||||
_receiver.SetNackSettings(
|
||||
max_nack_list_size, max_packet_age_to_nack, max_incomplete_time_ms);
|
||||
}
|
||||
|
||||
int VideoReceiver::SetMinReceiverDelay(int desired_delay_ms) {
|
||||
return _receiver.SetMinReceiverDelay(desired_delay_ms);
|
||||
}
|
||||
|
||||
void VideoReceiver::RegisterPreDecodeImageCallback(
|
||||
EncodedImageCallback* observer) {
|
||||
CriticalSectionScoped cs(_receiveCritSect);
|
||||
pre_decode_image_callback_ = observer;
|
||||
}
|
||||
|
||||
} // namespace vcm
|
||||
} // namespace webrtc
|
||||
Reference in New Issue
Block a user