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Declares BitrateAllocator methods const.

Browse Source 
Bug: webrtc:9883
Change-Id: I79e4f8d233281975c4073a381c7568469390b817
Reviewed-on: https://webrtc-review.googlesource.com/c/107725
Reviewed-by: Niels Moller <nisse@webrtc.org>
Commit-Queue: Sebastian Jansson <srte@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#25343}
This commit is contained in:
Sebastian Jansson
2018-10-24 16:07:20 +02:00
committed by Commit Bot
parent 583d6d9d4f
commit 44a262a6aa
3 changed files with 43 additions and 24 deletions
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37
call/bitrate_allocator.cc
View File

@ -248,7 +248,8 @@ void BitrateAllocator::RemoveObserver(BitrateAllocatorObserver* observer) {
UpdateAllocationLimits();
}
int BitrateAllocator::GetStartBitrate(BitrateAllocatorObserver* observer) {
int BitrateAllocator::GetStartBitrate(
BitrateAllocatorObserver* observer) const {
RTC_DCHECK_CALLED_SEQUENTIALLY(&sequenced_checker_);
const auto& it = FindObserverConfig(observer);
if (it == bitrate_observer_configs_.end()) {
@ -272,6 +273,17 @@ void BitrateAllocator::SetBitrateAllocationStrategy(
bitrate_allocation_strategy_ = std::move(bitrate_allocation_strategy);
}
BitrateAllocator::ObserverConfigs::const_iterator
BitrateAllocator::FindObserverConfig(
const BitrateAllocatorObserver* observer) const {
for (auto it = bitrate_observer_configs_.begin();
it != bitrate_observer_configs_.end(); ++it) {
if (it->observer == observer)
return it;
}
return bitrate_observer_configs_.end();
}
BitrateAllocator::ObserverConfigs::iterator
BitrateAllocator::FindObserverConfig(const BitrateAllocatorObserver* observer) {
for (auto it = bitrate_observer_configs_.begin();
@ -283,7 +295,7 @@ BitrateAllocator::FindObserverConfig(const BitrateAllocatorObserver* observer) {
}
BitrateAllocator::ObserverAllocation BitrateAllocator::AllocateBitrates(
uint32_t bitrate) {
uint32_t bitrate) const {
if (bitrate_observer_configs_.empty())
return ObserverAllocation();
@ -331,7 +343,8 @@ BitrateAllocator::ObserverAllocation BitrateAllocator::AllocateBitrates(
return MaxRateAllocation(bitrate, sum_max_bitrates);
}
BitrateAllocator::ObserverAllocation BitrateAllocator::ZeroRateAllocation() {
BitrateAllocator::ObserverAllocation BitrateAllocator::ZeroRateAllocation()
const {
ObserverAllocation allocation;
for (const auto& observer_config : bitrate_observer_configs_)
allocation[observer_config.observer] = 0;
@ -339,7 +352,7 @@ BitrateAllocator::ObserverAllocation BitrateAllocator::ZeroRateAllocation() {
}
BitrateAllocator::ObserverAllocation BitrateAllocator::LowRateAllocation(
uint32_t bitrate) {
uint32_t bitrate) const {
ObserverAllocation allocation;
// Start by allocating bitrate to observers enforcing a min bitrate, hence
// remaining_bitrate might turn negative.
@ -400,7 +413,7 @@ BitrateAllocator::ObserverAllocation BitrateAllocator::LowRateAllocation(
// min_bitrate_bps values, until one of the observers hits its max_bitrate_bps.
BitrateAllocator::ObserverAllocation BitrateAllocator::NormalRateAllocation(
uint32_t bitrate,
uint32_t sum_min_bitrates) {
uint32_t sum_min_bitrates) const {
ObserverAllocation allocation;
ObserverAllocation observers_capacities;
for (const auto& observer_config : bitrate_observer_configs_) {
@ -420,7 +433,7 @@ BitrateAllocator::ObserverAllocation BitrateAllocator::NormalRateAllocation(
BitrateAllocator::ObserverAllocation BitrateAllocator::MaxRateAllocation(
uint32_t bitrate,
uint32_t sum_max_bitrates) {
uint32_t sum_max_bitrates) const {
ObserverAllocation allocation;
for (const auto& observer_config : bitrate_observer_configs_) {
@ -457,10 +470,11 @@ uint32_t BitrateAllocator::ObserverConfig::MinBitrateWithHysteresis() const {
return min_bitrate;
}
void BitrateAllocator::DistributeBitrateEvenly(uint32_t bitrate,
void BitrateAllocator::DistributeBitrateEvenly(
uint32_t bitrate,
bool include_zero_allocations,
int max_multiplier,
ObserverAllocation* allocation) {
ObserverAllocation* allocation) const {
RTC_DCHECK_EQ(allocation->size(), bitrate_observer_configs_.size());
ObserverSortingMap list_max_bitrates;
@ -491,8 +505,9 @@ void BitrateAllocator::DistributeBitrateEvenly(uint32_t bitrate,
}
}
bool BitrateAllocator::EnoughBitrateForAllObservers(uint32_t bitrate,
uint32_t sum_min_bitrates) {
bool BitrateAllocator::EnoughBitrateForAllObservers(
uint32_t bitrate,
uint32_t sum_min_bitrates) const {
if (bitrate < sum_min_bitrates)
return false;
@ -511,7 +526,7 @@ bool BitrateAllocator::EnoughBitrateForAllObservers(uint32_t bitrate,
void BitrateAllocator::DistributeBitrateRelatively(
uint32_t remaining_bitrate,
const ObserverAllocation& observers_capacities,
ObserverAllocation* allocation) {
ObserverAllocation* allocation) const {
RTC_DCHECK_EQ(allocation->size(), bitrate_observer_configs_.size());
RTC_DCHECK_EQ(observers_capacities.size(), bitrate_observer_configs_.size());

24
call/bitrate_allocator.h
View File

@ -73,7 +73,7 @@ class BitrateAllocatorInterface {
virtual void AddObserver(BitrateAllocatorObserver* observer,
MediaStreamAllocationConfig config) = 0;
virtual void RemoveObserver(BitrateAllocatorObserver* observer) = 0;
virtual int GetStartBitrate(BitrateAllocatorObserver* observer) = 0;
virtual int GetStartBitrate(BitrateAllocatorObserver* observer) const = 0;
protected:
virtual ~BitrateAllocatorInterface() = default;
@ -120,7 +120,7 @@ class BitrateAllocator : public BitrateAllocatorInterface {
// Returns initial bitrate allocated for |observer|. If |observer| is not in
// the list of added observers, a best guess is returned.
int GetStartBitrate(BitrateAllocatorObserver* observer) override;
int GetStartBitrate(BitrateAllocatorObserver* observer) const override;
// Sets external allocation strategy. If strategy is not set default WebRTC
// allocation mechanism will be used. The strategy may be changed during call.
@ -171,31 +171,34 @@ class BitrateAllocator : public BitrateAllocatorInterface {
void UpdateAllocationLimits() RTC_RUN_ON(&sequenced_checker_);
typedef std::vector<ObserverConfig> ObserverConfigs;
ObserverConfigs::const_iterator FindObserverConfig(
const BitrateAllocatorObserver* observer) const
RTC_RUN_ON(&sequenced_checker_);
ObserverConfigs::iterator FindObserverConfig(
const BitrateAllocatorObserver* observer) RTC_RUN_ON(&sequenced_checker_);
typedef std::multimap<uint32_t, const ObserverConfig*> ObserverSortingMap;
typedef std::map<BitrateAllocatorObserver*, int> ObserverAllocation;
ObserverAllocation AllocateBitrates(uint32_t bitrate)
ObserverAllocation AllocateBitrates(uint32_t bitrate) const
RTC_RUN_ON(&sequenced_checker_);
// Allocates zero bitrate to all observers.
ObserverAllocation ZeroRateAllocation() RTC_RUN_ON(&sequenced_checker_);
ObserverAllocation ZeroRateAllocation() const RTC_RUN_ON(&sequenced_checker_);
// Allocates bitrate to observers when there isn't enough to allocate the
// minimum to all observers.
ObserverAllocation LowRateAllocation(uint32_t bitrate)
ObserverAllocation LowRateAllocation(uint32_t bitrate) const
RTC_RUN_ON(&sequenced_checker_);
// Allocates bitrate to all observers when the available bandwidth is enough
// to allocate the minimum to all observers but not enough to allocate the
// max bitrate of each observer.
ObserverAllocation NormalRateAllocation(uint32_t bitrate,
uint32_t sum_min_bitrates)
uint32_t sum_min_bitrates) const
RTC_RUN_ON(&sequenced_checker_);
// Allocates bitrate to observers when there is enough available bandwidth
// for all observers to be allocated their max bitrate.
ObserverAllocation MaxRateAllocation(uint32_t bitrate,
uint32_t sum_max_bitrates)
uint32_t sum_max_bitrates) const
RTC_RUN_ON(&sequenced_checker_);
// Splits |bitrate| evenly to observers already in |allocation|.
@ -205,9 +208,10 @@ class BitrateAllocator : public BitrateAllocatorInterface {
void DistributeBitrateEvenly(uint32_t bitrate,
bool include_zero_allocations,
int max_multiplier,
ObserverAllocation* allocation)
ObserverAllocation* allocation) const
RTC_RUN_ON(&sequenced_checker_);
bool EnoughBitrateForAllObservers(uint32_t bitrate, uint32_t sum_min_bitrates)
bool EnoughBitrateForAllObservers(uint32_t bitrate,
uint32_t sum_min_bitrates) const
RTC_RUN_ON(&sequenced_checker_);
// From the available |bitrate|, each observer will be allocated a
@ -219,7 +223,7 @@ class BitrateAllocator : public BitrateAllocatorInterface {
void DistributeBitrateRelatively(
uint32_t bitrate,
const ObserverAllocation& observers_capacities,
ObserverAllocation* allocation) RTC_RUN_ON(&sequenced_checker_);
ObserverAllocation* allocation) const RTC_RUN_ON(&sequenced_checker_);
// Allow packets to be transmitted in up to 2 times max video bitrate if the
// bandwidth estimate allows it.

2
call/test/mock_bitrate_allocator.h
View File

@ -21,7 +21,7 @@ class MockBitrateAllocator : public BitrateAllocatorInterface {
MOCK_METHOD2(AddObserver,
void(BitrateAllocatorObserver*, MediaStreamAllocationConfig));
MOCK_METHOD1(RemoveObserver, void(BitrateAllocatorObserver*));
MOCK_METHOD1(GetStartBitrate, int(BitrateAllocatorObserver*));
MOCK_CONST_METHOD1(GetStartBitrate, int(BitrateAllocatorObserver*));
};
} // namespace webrtc
#endif // CALL_TEST_MOCK_BITRATE_ALLOCATOR_H_