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/*
* Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "modules/video_coding/codecs/test/stats.h"
#include <stdio.h>
#include <algorithm>
#include "rtc_base/checks.h"
#include "rtc_base/format_macros.h"
namespace webrtc {
namespace test {
namespace {
bool LessForEncodeTime(const FrameStatistic& s1, const FrameStatistic& s2) {
RTC_DCHECK_NE(s1.frame_number, s2.frame_number);
return s1.encode_time_us < s2.encode_time_us;
}
bool LessForDecodeTime(const FrameStatistic& s1, const FrameStatistic& s2) {
RTC_DCHECK_NE(s1.frame_number, s2.frame_number);
return s1.decode_time_us < s2.decode_time_us;
}
bool LessForEncodedSize(const FrameStatistic& s1, const FrameStatistic& s2) {
RTC_DCHECK_NE(s1.frame_number, s2.frame_number);
return s1.encoded_frame_size_bytes < s2.encoded_frame_size_bytes;
}
bool LessForBitRate(const FrameStatistic& s1, const FrameStatistic& s2) {
RTC_DCHECK_NE(s1.frame_number, s2.frame_number);
return s1.bitrate_kbps < s2.bitrate_kbps;
}
bool LessForPsnr(const FrameStatistic& s1, const FrameStatistic& s2) {
RTC_DCHECK_NE(s1.frame_number, s2.frame_number);
return s1.psnr < s2.psnr;
}
bool LessForSsim(const FrameStatistic& s1, const FrameStatistic& s2) {
RTC_DCHECK_NE(s1.frame_number, s2.frame_number);
return s1.ssim < s2.ssim;
}
} // namespace
FrameStatistic* Stats::AddFrame() {
// We don't expect more frames than what can be stored in an int.
stats_.emplace_back(static_cast<int>(stats_.size()));
return &stats_.back();
}
FrameStatistic* Stats::GetFrame(int frame_number) {
RTC_CHECK_GE(frame_number, 0);
RTC_CHECK_LT(frame_number, stats_.size());
return &stats_[frame_number];
}
size_t Stats::size() const {
return stats_.size();
}
void Stats::PrintSummary() const {
if (stats_.empty()) {
printf("No frame statistics have been logged yet.\n");
return;
}
printf("Encode/decode statistics\n==\n");
// Calculate min, max, average and total encoding time.
int total_encoding_time_us = 0;
int total_decoding_time_us = 0;
size_t total_encoded_frame_size_bytes = 0;
size_t total_encoded_key_frame_size_bytes = 0;
size_t total_encoded_delta_frame_size_bytes = 0;
size_t num_key_frames = 0;
size_t num_delta_frames = 0;
int num_encode_failures = 0;
double total_psnr = 0.0;
double total_ssim = 0.0;
for (const FrameStatistic& stat : stats_) {
total_encoding_time_us += stat.encode_time_us;
total_decoding_time_us += stat.decode_time_us;
total_encoded_frame_size_bytes += stat.encoded_frame_size_bytes;
if (stat.frame_type == webrtc::kVideoFrameKey) {
total_encoded_key_frame_size_bytes += stat.encoded_frame_size_bytes;
++num_key_frames;
} else {
total_encoded_delta_frame_size_bytes += stat.encoded_frame_size_bytes;
++num_delta_frames;
}
if (stat.encode_return_code != 0) {
++num_encode_failures;
}
if (stat.decoding_successful) {
total_psnr += stat.psnr;
total_ssim += stat.ssim;
}
}
// Encoding stats.
printf("# Encoded frame failures: %d\n", num_encode_failures);
printf("Encoding time:\n");
auto frame_it =
std::min_element(stats_.begin(), stats_.end(), LessForEncodeTime);
printf(" Min : %7d us (frame %d)\n", frame_it->encode_time_us,
frame_it->frame_number);
frame_it = std::max_element(stats_.begin(), stats_.end(), LessForEncodeTime);
printf(" Max : %7d us (frame %d)\n", frame_it->encode_time_us,
frame_it->frame_number);
printf(" Average : %7d us\n",
static_cast<int>(total_encoding_time_us / stats_.size()));
// Decoding stats.
printf("Decoding time:\n");
// Only consider successfully decoded frames (packet loss may cause failures).
std::vector<FrameStatistic> decoded_frames;
for (const FrameStatistic& stat : stats_) {
if (stat.decoding_successful) {
decoded_frames.push_back(stat);
}
}
if (decoded_frames.empty()) {
printf("No successfully decoded frames exist in this statistics.\n");
} else {
frame_it = std::min_element(decoded_frames.begin(), decoded_frames.end(),
LessForDecodeTime);
printf(" Min : %7d us (frame %d)\n", frame_it->decode_time_us,
frame_it->frame_number);
frame_it = std::max_element(decoded_frames.begin(), decoded_frames.end(),
LessForDecodeTime);
printf(" Max : %7d us (frame %d)\n", frame_it->decode_time_us,
frame_it->frame_number);
printf(" Average : %7d us\n",
static_cast<int>(total_decoding_time_us / decoded_frames.size()));
printf(" Failures: %d frames failed to decode.\n",
static_cast<int>(stats_.size() - decoded_frames.size()));
}
// Frame size stats.
printf("Frame sizes:\n");
frame_it = std::min_element(stats_.begin(), stats_.end(), LessForEncodedSize);
printf(" Min : %7" PRIuS " bytes (frame %d)\n",
frame_it->encoded_frame_size_bytes, frame_it->frame_number);
frame_it = std::max_element(stats_.begin(), stats_.end(), LessForEncodedSize);
printf(" Max : %7" PRIuS " bytes (frame %d)\n",
frame_it->encoded_frame_size_bytes, frame_it->frame_number);
printf(" Average : %7" PRIuS " bytes\n",
total_encoded_frame_size_bytes / stats_.size());
if (num_key_frames > 0) {
printf(" Average key frame size : %7" PRIuS " bytes (%" PRIuS
" keyframes)\n",
total_encoded_key_frame_size_bytes / num_key_frames, num_key_frames);
}
if (num_delta_frames > 0) {
printf(" Average non-key frame size: %7" PRIuS " bytes (%" PRIuS
" frames)\n",
total_encoded_delta_frame_size_bytes / num_delta_frames,
num_delta_frames);
}
// Bitrate stats.
printf("Bitrates:\n");
frame_it = std::min_element(stats_.begin(), stats_.end(), LessForBitRate);
printf(" Min bitrate: %7d kbps (frame %d)\n", frame_it->bitrate_kbps,
frame_it->frame_number);
frame_it = std::max_element(stats_.begin(), stats_.end(), LessForBitRate);
printf(" Max bitrate: %7d kbps (frame %d)\n", frame_it->bitrate_kbps,
frame_it->frame_number);
// Quality.
printf("Quality:\n");
if (decoded_frames.empty()) {
printf("No successfully decoded frames exist in this statistics.\n");
} else {
frame_it = std::min_element(decoded_frames.begin(), decoded_frames.end(),
LessForPsnr);
printf(" PSNR min: %f (frame %d)\n", frame_it->psnr,
frame_it->frame_number);
printf(" PSNR avg: %f\n", total_psnr / decoded_frames.size());
frame_it = std::min_element(decoded_frames.begin(), decoded_frames.end(),
LessForSsim);
printf(" SSIM min: %f (frame %d)\n", frame_it->ssim,
frame_it->frame_number);
printf(" SSIM avg: %f\n", total_ssim / decoded_frames.size());
}
printf("\n");
printf("Total encoding time : %7d ms.\n", total_encoding_time_us / 1000);
printf("Total decoding time : %7d ms.\n", total_decoding_time_us / 1000);
printf("Total processing time: %7d ms.\n",
(total_encoding_time_us + total_decoding_time_us) / 1000);
// QP stats.
int total_qp = 0;
int total_qp_count = 0;
for (const FrameStatistic& stat : stats_) {
if (stat.qp >= 0) {
total_qp += stat.qp;
++total_qp_count;
}
}
int avg_qp = (total_qp_count > 0) ? (total_qp / total_qp_count) : -1;
printf("Average QP: %d\n", avg_qp);
printf("\n");
}
} // namespace test
} // namespace webrtc
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