# Copyright 2022 ByteDance Ltd. and/or its affiliates.
#
# Licensed to the Apache Software Foundation (ASF) under one
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# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
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from typing import Any, Tuple, List
import sys
matx = sys.modules['matx']
from .. import ASYNC, ImdecodeOp
from ._base import BaseInterfaceClass, BatchBaseClass
[文档]class Decode(BaseInterfaceClass):
[文档] def __init__(self,
to_rgb: bool = False,
pool_size: int = 8,
device_id: int = -2,
sync: int = ASYNC) -> None:
super().__init__(device_id=device_id, sync=sync)
self.to_rgb: bool = to_rgb
self.pool_size: int = pool_size
[文档] def __call__(self, device: Any, device_str: str, sync: int) -> Any:
return DecodeImpl(device, device_str, self.to_rgb, self.pool_size, sync)
class DecodeImpl:
def __init__(self,
device: Any,
device_str: str,
to_rgb: bool = False,
pool_size: int = 8,
sync: int = ASYNC):
self.device: Any = device
self.device_str: str = device_str
self.color_format: str = "RGB" if to_rgb else "BGR"
self.pool_size: int = pool_size
self.op: ImdecodeOp = ImdecodeOp(self.device, self.color_format, self.pool_size)
self.sync: int = sync
self.name: str = "Decode"
def _process(self, imgs: List[bytes]) -> List[matx.NDArray]:
return self.op(imgs, sync=self.sync)
def __repr__(self) -> str:
return '{}(format={}, pool_size={}, device={}, sync={})'.format(
self.name, self.color_format, self.pool_size, self.device_str, self.sync)
def __call__(
self,
images: List[bytes],
apply_index: List[int] = []) -> List[matx.NDArray]:
assert len(apply_index) == 0, "apply_index is not support by jpeg decode."
new_images: List[matx.NDArray] = self._process(images)
return new_images