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// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/memory/linked_ptr.h"
#include "base/memory/scoped_ptr.h"
#include "media/cast/logging/logging_stats.h"
namespace media {
namespace cast {
LoggingStats::LoggingStats(base::TickClock* clock)
: frame_stats_(),
packet_stats_(),
generic_stats_(),
start_time_(),
clock_(clock) {
memset(counts_, 0, sizeof(counts_));
memset(start_time_, 0, sizeof(start_time_));
}
LoggingStats::~LoggingStats() {}
void LoggingStats::Reset() {
frame_stats_.clear();
packet_stats_.clear();
generic_stats_.clear();
memset(counts_, 0, sizeof(counts_));
}
void LoggingStats::InsertFrameEvent(CastLoggingEvent event,
uint32 rtp_timestamp,
uint32 frame_id) {
InsertBaseFrameEvent(event, frame_id, rtp_timestamp);
}
void LoggingStats::InsertFrameEventWithSize(CastLoggingEvent event,
uint32 rtp_timestamp,
uint32 frame_id,
int frame_size) {
InsertBaseFrameEvent(event, frame_id, rtp_timestamp);
// Update size.
FrameStatsMap::iterator it = frame_stats_.find(event);
DCHECK(it != frame_stats_.end());
it->second->bitrate_kbps += frame_size;
}
void LoggingStats::InsertFrameEventWithDelay(CastLoggingEvent event,
uint32 rtp_timestamp,
uint32 frame_id,
base::TimeDelta delay) {
InsertBaseFrameEvent(event, frame_id, rtp_timestamp);
// Update size.
FrameStatsMap::iterator it = frame_stats_.find(event);
DCHECK(it != frame_stats_.end());
// Using the average delay as a counter, will divide by the counter when
// triggered.
it->second->avg_delay_ms += delay.InMilliseconds();
if (delay.InMilliseconds() > it->second->max_delay_ms)
it->second->max_delay_ms = delay.InMilliseconds();
if ((delay.InMilliseconds() < it->second->min_delay_ms) ||
(counts_[event] == 1) )
it->second->min_delay_ms = delay.InMilliseconds();
}
void LoggingStats::InsertBaseFrameEvent(CastLoggingEvent event,
uint32 frame_id,
uint32 rtp_timestamp) {
// Does this belong to an existing event?
FrameStatsMap::iterator it = frame_stats_.find(event);
if (it == frame_stats_.end()) {
// New event.
start_time_[event] = clock_->NowTicks();
linked_ptr<FrameLogStats> stats(new FrameLogStats());
frame_stats_.insert(std::make_pair(event, stats));
}
++counts_[event];
}
void LoggingStats::InsertPacketEvent(CastLoggingEvent event,
uint32 rtp_timestamp,
uint32 frame_id,
uint16 packet_id,
uint16 max_packet_id,
size_t size) {
// Does this packet belong to an existing event?
PacketStatsMap::iterator it = packet_stats_.find(event);
if (it == packet_stats_.end()) {
// New event.
start_time_[event] = clock_->NowTicks();
packet_stats_.insert(std::make_pair(event, size));
} else {
// Add to existing.
it->second += size;
}
++counts_[event];
}
void LoggingStats::InsertGenericEvent(CastLoggingEvent event, int value) {
// Does this event belong to an existing event?
GenericStatsMap::iterator it = generic_stats_.find(event);
if (it == generic_stats_.end()) {
// New event.
start_time_[event] = clock_->NowTicks();
generic_stats_.insert(std::make_pair(event, value));
} else {
// Add to existing (will be used to compute average).
it->second += value;
}
++counts_[event];
}
const FrameStatsMap* LoggingStats::GetFrameStatsData() {
// Compute framerate and bitrate (when available).
FrameStatsMap::iterator it;
for (it = frame_stats_.begin(); it != frame_stats_.end(); ++it) {
base::TimeDelta time_diff = clock_->NowTicks() - start_time_[it->first];
it->second->framerate_fps = counts_[it->first] / time_diff.InSecondsF();
if (it->second->bitrate_kbps > 0) {
it->second->bitrate_kbps = (8 / 1000) *
it->second->bitrate_kbps / time_diff.InSecondsF();
}
if (it->second->avg_delay_ms > 0)
it->second->avg_delay_ms /= counts_[it->first];
}
return &frame_stats_;
}
const PacketStatsMap* LoggingStats::GetPacketStatsData() {
PacketStatsMap::iterator it;
for (it = packet_stats_.begin(); it != packet_stats_.end(); ++it) {
if (counts_[it->first] == 0) continue;
base::TimeDelta time_diff = clock_->NowTicks() - start_time_[it->first];
it->second = (8 / 1000) * it->second / time_diff.InSecondsF();
}
return &packet_stats_;
}
const GenericStatsMap* LoggingStats::GetGenericStatsData() {
// Compute averages.
GenericStatsMap::iterator it;
for (it = generic_stats_.begin(); it != generic_stats_.end(); ++it) {
it->second /= counts_[ it->first];
}
return &generic_stats_;
}
} // namespace cast
} // namespace media
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