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# Fluster - testing framework for decoders conformance
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public License
# as published by the Free Software Foundation, either version 3
# of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library. If not, see <https://www.gnu.org/licenses/>.
import os
import argparse
import xml.etree.ElementTree as ET
import sys
import multiprocessing
import urllib.request
# pylint: disable=wrong-import-position
sys.path.append(os.path.join(os.path.dirname(__file__), ".."))
from fluster.test_suite import TestSuite, TestVector
from fluster.codec import Codec, OutputFormat
from fluster import utils
from fluster.decoders import av1_aom
# pylint: enable=wrong-import-position
# Sourced from test/test_data_download_worker.cmake
AV1_URL = "https://storage.googleapis.com/aom-test-data"
# Sourced from test/test_vector_test.cc
BITSTREAM_EXTS = (
".ivf",
".webm",
".mkv"
)
class AOMGenerator:
"""Generates a test suite from the conformance bitstreams"""
def __init__(
self,
name: str,
suite_name: str,
codec: Codec,
description: str,
site: str,
):
self.name = name
self.suite_name = suite_name
self.codec = codec
self.description = description
self.site = site
self.decoder = av1_aom.AV1AOMDecoder()
def generate(self, download, jobs):
"""Generates the test suite and saves it to a file"""
output_filepath = os.path.join(self.suite_name + ".json")
test_suite = TestSuite(
output_filepath,
"resources",
self.suite_name,
self.codec,
self.description,
dict(),
)
print(f"Download list of bitstreams from {self.site + self.name}")
opener = urllib.request.build_opener()
root = ET.parse(opener.open(self.site)).getroot()
opener.close()
for entry in root.findall("{*}Contents"):
if "Contents" not in entry.tag:
continue
fname = entry.find("{*}Key").text
name = fname[:-4]
if fname[-4:] not in BITSTREAM_EXTS or "invalid" in fname:
continue
file_url = f"{AV1_URL}/{entry.find('{*}Key').text}"
test_vector = TestVector(
name, file_url, "__skip__", fname, OutputFormat.YUV420P, "")
test_suite.test_vectors[name] = test_vector
if download:
test_suite.download(
jobs=jobs,
out_dir=test_suite.resources_dir,
verify=False,
extract_all=True,
keep_file=True,
)
for test_vector in test_suite.test_vectors.values():
dest_dir = os.path.join(
test_suite.resources_dir, test_suite.name, test_vector.name
)
dest_path = os.path.join(
dest_dir, os.path.basename(test_vector.source))
test_vector.input_file = dest_path.replace(
os.path.join(
test_suite.resources_dir, test_suite.name, test_vector.name
)
+ os.sep,
"",
)
if not test_vector.input_file:
raise Exception(f"Bitstream file not found in {dest_dir}")
test_vector.source_checksum = utils.file_checksum(dest_path)
out420 = f"{dest_path}.i420"
# Run the libaom av1 decoder to get the checksum as the .md5 files are per-frame
test_vector.result = self.decoder.decode(
dest_path, out420, test_vector.output_format, 30, False)
os.remove(out420)
test_suite.to_json_file(output_filepath)
print("Generate new test suite: " + test_suite.name + ".json")
if __name__ == "__main__":
parser = argparse.ArgumentParser()
parser.add_argument(
"--skip-download",
help="skip extracting tarball",
action="store_true",
default=False,
)
parser.add_argument(
"-j",
"--jobs",
help="number of parallel jobs to use. 2x logical cores by default",
type=int,
default=2 * multiprocessing.cpu_count(),
)
args = parser.parse_args()
generator = AOMGenerator(
"libaom-AV1",
"AV1-TEST-VECTORS",
Codec.AV1,
"AV1 Test Vector Catalogue from https://storage.googleapis.com/aom-test-data",
AV1_URL,
)
generator.generate(not args.skip_download, args.jobs)
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