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#!/usr/bin/python3
##
## Copyright (c) 2022, Alliance for Open Media. All rights reserved
##
## This source code is subject to the terms of the BSD 2 Clause License and
## the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
## was not distributed with this source code in the LICENSE file, you can
## obtain it at www.aomedia.org/license/software. If the Alliance for Open
## Media Patent License 1.0 was not distributed with this source code in the
## PATENTS file, you can obtain it at www.aomedia.org/license/patent.
##
""" Analyze the log generated by experimental flag CONFIG_RATECTRL_LOG."""
import matplotlib.pyplot as plt
import os
def get_file_basename(filename):
return filename.split(".")[0]
def parse_log(log_file):
data_list = []
with open(log_file) as fp:
for line in fp:
dic = {}
word_ls = line.split()
i = 0
while i < len(word_ls):
dic[word_ls[i]] = float(word_ls[i + 1])
i += 2
data_list.append(dic)
fp.close()
return data_list
def extract_data(data_list, name):
arr = []
for data in data_list:
arr.append(data[name])
return arr
def visualize_q_indices(exp_summary, exp_list, fig_path=None):
for exp in exp_list:
data = parse_log(exp["log"])
q_indices = extract_data(data, "q")
plt.title(exp_summary)
plt.xlabel("frame_coding_idx")
plt.ylabel("q_index")
plt.plot(q_indices, marker=".", label=exp["label"])
plt.legend()
if fig_path:
plt.savefig(fig_path)
else:
plt.show()
plt.clf()
def get_rc_type_from_exp_type(exp_type):
if exp_type == "Q_3P":
return "q"
return "vbr"
def test_video(exe_name, input, exp_type, level, log=None, limit=150):
basic_cmd = ("--test-decode=warn --threads=0 --profile=0 --min-q=0 --max-q=63"
" --auto-alt-ref=1 --kf-max-dist=160 --kf-min-dist=0 "
"--drop-frame=0 --static-thresh=0 --minsection-pct=0 "
"--maxsection-pct=2000 --arnr-maxframes=7 --arnr-strength=5 "
"--sharpness=0 --undershoot-pct=100 --overshoot-pct=100 "
"--frame-parallel=0 --tile-columns=0 --cpu-used=3 "
"--lag-in-frames=48 --psnr")
rc_type = get_rc_type_from_exp_type(exp_type)
rc_cmd = "--end-usage=" + rc_type
level_cmd = ""
if rc_type == "q":
level_cmd += "--cq-level=" + str(level)
elif rc_type == "vbr":
level_cmd += "--target-bitrate=" + str(level)
limit_cmd = "--limit=" + str(limit)
passes_cmd = "--passes=3 --second-pass-log=second_pass_log"
output_cmd = "-o test.webm"
input_cmd = "~/data/" + input
log_cmd = ""
if log != None:
log_cmd = ">" + log
cmd_ls = [
exe_name, basic_cmd, rc_cmd, level_cmd, limit_cmd, passes_cmd, output_cmd,
input_cmd, log_cmd
]
cmd = " ".join(cmd_ls)
os.system(cmd)
def gen_ratectrl_log(test_case):
exe = test_case["exe"]
video = test_case["video"]
exp_type = test_case["exp_type"]
level = test_case["level"]
log = test_case["log"]
test_video(exe, video, exp_type, level, log=log, limit=150)
return log
def gen_test_case(exp_type, dataset, videoname, level, log_dir=None):
test_case = {}
exe = "./aomenc_bl"
if exp_type == "BA_3P":
exe = "./aomenc_ba"
test_case["exe"] = exe
video = os.path.join(dataset, videoname)
test_case["video"] = video
test_case["exp_type"] = exp_type
test_case["level"] = level
video_basename = get_file_basename(videoname)
log = ".".join([dataset, video_basename, exp_type, str(level)])
if log_dir != None:
log = os.path.join(log_dir, log)
test_case["log"] = log
return test_case
def run_ratectrl_exp(exp_config):
fp = open(exp_config)
log_dir = "./lowres_rc_log"
fig_dir = "./lowres_rc_fig"
dataset = "lowres"
for line in fp:
word_ls = line.split()
dataset = word_ls[0]
videoname = word_ls[1]
exp_type_ls = ["VBR_3P", "BA_3P"]
level_ls = [int(v) for v in word_ls[2:4]]
exp_ls = []
for i in range(len(exp_type_ls)):
exp_type = exp_type_ls[i]
test_case = gen_test_case(exp_type, dataset, videoname, level_ls[i],
log_dir)
log = gen_ratectrl_log(test_case)
exp = {}
exp["log"] = log
exp["label"] = exp_type
exp_ls.append(exp)
video_basename = get_file_basename(videoname)
fig_path = os.path.join(fig_dir, video_basename + ".png")
visualize_q_indices(video_basename, exp_ls, fig_path)
fp.close()
if __name__ == "__main__":
run_ratectrl_exp("exp_rc_config")
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