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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 "webrtc/modules/video_coding/codecs/test/stats.h"
#include <assert.h>
#include <stdio.h>
#include <algorithm> // min_element, max_element
#include "webrtc/base/format_macros.h"
namespace webrtc {
namespace test {
FrameStatistic::FrameStatistic()
: encoding_successful(false),
decoding_successful(false),
encode_return_code(0),
decode_return_code(0),
encode_time_in_us(0),
decode_time_in_us(0),
frame_number(0),
packets_dropped(0),
total_packets(0),
bit_rate_in_kbps(0),
encoded_frame_length_in_bytes(0),
frame_type(kDeltaFrame) {}
Stats::Stats() {}
Stats::~Stats() {}
bool LessForEncodeTime(const FrameStatistic& s1, const FrameStatistic& s2) {
return s1.encode_time_in_us < s2.encode_time_in_us;
}
bool LessForDecodeTime(const FrameStatistic& s1, const FrameStatistic& s2) {
return s1.decode_time_in_us < s2.decode_time_in_us;
}
bool LessForEncodedSize(const FrameStatistic& s1, const FrameStatistic& s2) {
return s1.encoded_frame_length_in_bytes < s2.encoded_frame_length_in_bytes;
}
bool LessForBitRate(const FrameStatistic& s1, const FrameStatistic& s2) {
return s1.bit_rate_in_kbps < s2.bit_rate_in_kbps;
}
FrameStatistic& Stats::NewFrame(int frame_number) {
assert(frame_number >= 0);
FrameStatistic stat;
stat.frame_number = frame_number;
stats_.push_back(stat);
return stats_[frame_number];
}
void Stats::PrintSummary() {
printf("Processing summary:\n");
if (stats_.size() == 0) {
printf("No frame statistics have been logged yet.\n");
return;
}
// Calculate min, max, average and total encoding time
int total_encoding_time_in_us = 0;
int total_decoding_time_in_us = 0;
size_t total_encoded_frames_lengths = 0;
size_t total_encoded_key_frames_lengths = 0;
size_t total_encoded_nonkey_frames_lengths = 0;
size_t nbr_keyframes = 0;
size_t nbr_nonkeyframes = 0;
for (FrameStatisticsIterator it = stats_.begin();
it != stats_.end(); ++it) {
total_encoding_time_in_us += it->encode_time_in_us;
total_decoding_time_in_us += it->decode_time_in_us;
total_encoded_frames_lengths += it->encoded_frame_length_in_bytes;
if (it->frame_type == webrtc::kKeyFrame) {
total_encoded_key_frames_lengths += it->encoded_frame_length_in_bytes;
nbr_keyframes++;
} else {
total_encoded_nonkey_frames_lengths += it->encoded_frame_length_in_bytes;
nbr_nonkeyframes++;
}
}
FrameStatisticsIterator frame;
// ENCODING
printf("Encoding time:\n");
frame = std::min_element(stats_.begin(),
stats_.end(), LessForEncodeTime);
printf(" Min : %7d us (frame %d)\n",
frame->encode_time_in_us, frame->frame_number);
frame = std::max_element(stats_.begin(),
stats_.end(), LessForEncodeTime);
printf(" Max : %7d us (frame %d)\n",
frame->encode_time_in_us, frame->frame_number);
printf(" Average : %7d us\n",
static_cast<int>(total_encoding_time_in_us / stats_.size()));
// DECODING
printf("Decoding time:\n");
// only consider frames that were successfully decoded (packet loss may cause
// failures)
std::vector<FrameStatistic> decoded_frames;
for (std::vector<FrameStatistic>::iterator it = stats_.begin();
it != stats_.end(); ++it) {
if (it->decoding_successful) {
decoded_frames.push_back(*it);
}
}
if (decoded_frames.size() == 0) {
printf("No successfully decoded frames exist in this statistics.\n");
} else {
frame = std::min_element(decoded_frames.begin(),
decoded_frames.end(), LessForDecodeTime);
printf(" Min : %7d us (frame %d)\n",
frame->decode_time_in_us, frame->frame_number);
frame = std::max_element(decoded_frames.begin(),
decoded_frames.end(), LessForDecodeTime);
printf(" Max : %7d us (frame %d)\n",
frame->decode_time_in_us, frame->frame_number);
printf(" Average : %7d us\n",
static_cast<int>(total_decoding_time_in_us / decoded_frames.size()));
printf(" Failures: %d frames failed to decode.\n",
static_cast<int>(stats_.size() - decoded_frames.size()));
}
// SIZE
printf("Frame sizes:\n");
frame = std::min_element(stats_.begin(),
stats_.end(), LessForEncodedSize);
printf(" Min : %7" PRIuS " bytes (frame %d)\n",
frame->encoded_frame_length_in_bytes, frame->frame_number);
frame = std::max_element(stats_.begin(),
stats_.end(), LessForEncodedSize);
printf(" Max : %7" PRIuS " bytes (frame %d)\n",
frame->encoded_frame_length_in_bytes, frame->frame_number);
printf(" Average : %7" PRIuS " bytes\n",
total_encoded_frames_lengths / stats_.size());
if (nbr_keyframes > 0) {
printf(" Average key frame size : %7" PRIuS " bytes (%" PRIuS
" keyframes)\n",
total_encoded_key_frames_lengths / nbr_keyframes, nbr_keyframes);
}
if (nbr_nonkeyframes > 0) {
printf(" Average non-key frame size: %7" PRIuS " bytes (%" PRIuS
" frames)\n",
total_encoded_nonkey_frames_lengths / nbr_nonkeyframes,
nbr_nonkeyframes);
}
// BIT RATE
printf("Bit rates:\n");
frame = std::min_element(stats_.begin(),
stats_.end(), LessForBitRate);
printf(" Min bit rate: %7d kbps (frame %d)\n",
frame->bit_rate_in_kbps, frame->frame_number);
frame = std::max_element(stats_.begin(),
stats_.end(), LessForBitRate);
printf(" Max bit rate: %7d kbps (frame %d)\n",
frame->bit_rate_in_kbps, frame->frame_number);
printf("\n");
printf("Total encoding time : %7d ms.\n",
total_encoding_time_in_us / 1000);
printf("Total decoding time : %7d ms.\n",
total_decoding_time_in_us / 1000);
printf("Total processing time: %7d ms.\n",
(total_encoding_time_in_us + total_decoding_time_in_us) / 1000);
}
} // namespace test
} // namespace webrtc
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