49 lines
1.6 KiB
Python
Executable File
49 lines
1.6 KiB
Python
Executable File
###########################################
|
|
# Project: CMSIS DSP Library
|
|
# Title: StereoToMono.py
|
|
# Description: Stereo to mono in Q15
|
|
#
|
|
# $Date: 06 August 2021
|
|
# $Revision: V1.10.0
|
|
#
|
|
# Target Processor: Cortex-M and Cortex-A cores
|
|
# -------------------------------------------------------------------- */
|
|
#
|
|
# Copyright (C) 2010-2021 ARM Limited or its affiliates. All rights reserved.
|
|
#
|
|
# SPDX-License-Identifier: Apache-2.0
|
|
#
|
|
# Licensed 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
|
|
#
|
|
# 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 under the License.
|
|
############################################
|
|
from .simu import *
|
|
import numpy as np
|
|
import cmsisdsp as dsp
|
|
|
|
class StereoToMono(GenericNode):
|
|
def __init__(self,inputSize,outputSize,fifoin,fifoout):
|
|
GenericNode.__init__(self,inputSize,outputSize,fifoin,fifoout)
|
|
if fifoin.type == np.dtype(np.float32):
|
|
self._isFloat=True
|
|
else:
|
|
self._isFloat=False
|
|
|
|
|
|
def run(self):
|
|
i=self.getReadBuffer()
|
|
o=self.getWriteBuffer()
|
|
|
|
if self._isFloat:
|
|
o[:] = 0.5 * (i[::2] + i[1::2])
|
|
else:
|
|
o[:] = (i[::2]) // 2 + (i[1::2] // 2)
|
|
return(0) |