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From: Andreas Pehrson <apehrson@mozilla.com>
Date: Tue, 2 Nov 2021 14:35:00 +0000
Subject: Bug 1729455 - Inject RTCStatsTimestampMakerRealtimeClock into Call
instances. r=bwc
This patch makes libwebrtc use our clock for timestamps.
It also makes sure there's no use of the libwebrtc realtime clock, other than
for relative time tracking (like timeouts), and that future libwebrtc updates
don't introduce unaudited use of it.
Differential Revision: https://phabricator.services.mozilla.com/D127714
Mercurial Revision: https://hg.mozilla.org/mozilla-central/rev/0744d68b8c944e69945de4ac5c4ca71332e78ad8
---
audio/channel_send.cc | 2 +-
call/call.cc | 2 ++
call/call_factory.cc | 4 ++++
call/degraded_call.cc | 2 ++
modules/audio_coding/acm2/audio_coding_module.cc | 2 +-
modules/rtp_rtcp/include/flexfec_receiver.h | 2 ++
modules/rtp_rtcp/source/flexfec_receiver.cc | 2 ++
rtc_base/task_utils/repeating_task.h | 4 ++--
system_wrappers/include/clock.h | 2 +-
system_wrappers/source/clock.cc | 2 +-
10 files changed, 18 insertions(+), 6 deletions(-)
diff --git a/audio/channel_send.cc b/audio/channel_send.cc
index c84a91770e..9609ac8a31 100644
--- a/audio/channel_send.cc
+++ b/audio/channel_send.cc
@@ -502,7 +502,7 @@ ChannelSend::ChannelSend(
RtpRtcpInterface::Configuration configuration;
configuration.bandwidth_callback = rtcp_observer_.get();
configuration.transport_feedback_callback = feedback_observer_;
- configuration.clock = (clock ? clock : Clock::GetRealTimeClock());
+ configuration.clock = clock;
configuration.audio = true;
configuration.outgoing_transport = rtp_transport;
diff --git a/call/call.cc b/call/call.cc
index e676d7a30a..a63087f5c1 100644
--- a/call/call.cc
+++ b/call/call.cc
@@ -485,12 +485,14 @@ std::string Call::Stats::ToString(int64_t time_ms) const {
return ss.str();
}
+/* Mozilla: Avoid this since it could use GetRealTimeClock().
Call* Call::Create(const Call::Config& config) {
Clock* clock = Clock::GetRealTimeClock();
return Create(config, clock,
RtpTransportControllerSendFactory().Create(
config.ExtractTransportConfig(), clock));
}
+ */
Call* Call::Create(const Call::Config& config,
Clock* clock,
diff --git a/call/call_factory.cc b/call/call_factory.cc
index 380e80ce12..253f8cd7de 100644
--- a/call/call_factory.cc
+++ b/call/call_factory.cc
@@ -95,6 +95,9 @@ Call* CallFactory::CreateCall(const Call::Config& config) {
RtpTransportConfig transportConfig = config.ExtractTransportConfig();
+ RTC_CHECK(false);
+ return nullptr;
+ /* Mozilla: Avoid this since it could use GetRealTimeClock().
Call* call =
Call::Create(config, Clock::GetRealTimeClock(),
config.rtp_transport_controller_send_factory->Create(
@@ -107,6 +110,7 @@ Call* CallFactory::CreateCall(const Call::Config& config) {
}
return call;
+ */
}
std::unique_ptr<CallFactoryInterface> CreateCallFactory() {
diff --git a/call/degraded_call.cc b/call/degraded_call.cc
index fc76c7be5c..99c32296c3 100644
--- a/call/degraded_call.cc
+++ b/call/degraded_call.cc
@@ -129,6 +129,7 @@ bool DegradedCall::FakeNetworkPipeTransportAdapter::SendRtcp(
return true;
}
+/* Mozilla: Avoid this since it could use GetRealTimeClock().
DegradedCall::DegradedCall(
std::unique_ptr<Call> call,
const std::vector<TimeScopedNetworkConfig>& send_configs,
@@ -165,6 +166,7 @@ DegradedCall::DegradedCall(
}
}
}
+*/
DegradedCall::~DegradedCall() {
RTC_DCHECK_RUN_ON(call_->worker_thread());
diff --git a/modules/audio_coding/acm2/audio_coding_module.cc b/modules/audio_coding/acm2/audio_coding_module.cc
index 4367ab08fa..2c186273b6 100644
--- a/modules/audio_coding/acm2/audio_coding_module.cc
+++ b/modules/audio_coding/acm2/audio_coding_module.cc
@@ -620,7 +620,7 @@ int AudioCodingModuleImpl::GetTargetBitrate() const {
AudioCodingModule::Config::Config(
rtc::scoped_refptr<AudioDecoderFactory> decoder_factory)
: neteq_config(),
- clock(Clock::GetRealTimeClock()),
+ clock(Clock::GetRealTimeClockRaw()),
decoder_factory(decoder_factory) {
// Post-decode VAD is disabled by default in NetEq, however, Audio
// Conference Mixer relies on VAD decisions and fails without them.
diff --git a/modules/rtp_rtcp/include/flexfec_receiver.h b/modules/rtp_rtcp/include/flexfec_receiver.h
index 3cf4c3845e..29d9e72786 100644
--- a/modules/rtp_rtcp/include/flexfec_receiver.h
+++ b/modules/rtp_rtcp/include/flexfec_receiver.h
@@ -29,9 +29,11 @@ class Clock;
class FlexfecReceiver {
public:
+ /* Mozilla: Avoid this since it could use GetRealTimeClock().
FlexfecReceiver(uint32_t ssrc,
uint32_t protected_media_ssrc,
RecoveredPacketReceiver* recovered_packet_receiver);
+ */
FlexfecReceiver(Clock* clock,
uint32_t ssrc,
uint32_t protected_media_ssrc,
diff --git a/modules/rtp_rtcp/source/flexfec_receiver.cc b/modules/rtp_rtcp/source/flexfec_receiver.cc
index 3f345cd6d2..bd67de1f83 100644
--- a/modules/rtp_rtcp/source/flexfec_receiver.cc
+++ b/modules/rtp_rtcp/source/flexfec_receiver.cc
@@ -29,6 +29,7 @@ constexpr int kPacketLogIntervalMs = 10000;
} // namespace
+/* Mozilla: Avoid this since it could use GetRealTimeClock().
FlexfecReceiver::FlexfecReceiver(
uint32_t ssrc,
uint32_t protected_media_ssrc,
@@ -37,6 +38,7 @@ FlexfecReceiver::FlexfecReceiver(
ssrc,
protected_media_ssrc,
recovered_packet_receiver) {}
+ */
FlexfecReceiver::FlexfecReceiver(
Clock* clock,
diff --git a/rtc_base/task_utils/repeating_task.h b/rtc_base/task_utils/repeating_task.h
index e5ea3d8174..c06bac2247 100644
--- a/rtc_base/task_utils/repeating_task.h
+++ b/rtc_base/task_utils/repeating_task.h
@@ -56,7 +56,7 @@ class RepeatingTaskHandle {
absl::AnyInvocable<TimeDelta()> closure,
TaskQueueBase::DelayPrecision precision =
TaskQueueBase::DelayPrecision::kLow,
- Clock* clock = Clock::GetRealTimeClock());
+ Clock* clock = Clock::GetRealTimeClockRaw());
// DelayedStart is equivalent to Start except that the first invocation of the
// closure will be delayed by the given amount.
@@ -66,7 +66,7 @@ class RepeatingTaskHandle {
absl::AnyInvocable<TimeDelta()> closure,
TaskQueueBase::DelayPrecision precision =
TaskQueueBase::DelayPrecision::kLow,
- Clock* clock = Clock::GetRealTimeClock());
+ Clock* clock = Clock::GetRealTimeClockRaw());
// Stops future invocations of the repeating task closure. Can only be called
// from the TaskQueue where the task is running. The closure is guaranteed to
diff --git a/system_wrappers/include/clock.h b/system_wrappers/include/clock.h
index 60296070cc..214b34c970 100644
--- a/system_wrappers/include/clock.h
+++ b/system_wrappers/include/clock.h
@@ -49,7 +49,7 @@ class RTC_EXPORT Clock {
}
// Returns an instance of the real-time system clock implementation.
- static Clock* GetRealTimeClock();
+ static Clock* GetRealTimeClockRaw();
};
class SimulatedClock : public Clock {
diff --git a/system_wrappers/source/clock.cc b/system_wrappers/source/clock.cc
index 88c99d6a68..f7460b831c 100644
--- a/system_wrappers/source/clock.cc
+++ b/system_wrappers/source/clock.cc
@@ -57,7 +57,7 @@ class RealTimeClock : public Clock {
}
};
-Clock* Clock::GetRealTimeClock() {
+Clock* Clock::GetRealTimeClockRaw() {
static Clock* const clock = new RealTimeClock();
return clock;
}
--
2.34.1
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