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SampleSufraceDownload.py
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#
# Copyright 2019 NVIDIA Corporation
#
# 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
#
# 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 under the License.
#
import PyNvCodec as nvc
import numpy as np
gpuID = 0
encFile = "big_buck_bunny_1080p_h264.mov"
decFile = open("big_buck_bunny_1080p_h264.nv12", "wb")
nvDec = nvc.PyNvDecoder(encFile, gpuID)
nvDwl = nvc.PySurfaceDownloader(nvDec.Width(), nvDec.Height(), nvDec.PixelFormat(), gpuID)
while True:
rawSurface = nvDec.DecodeSingleSurface()
if (rawSurface.Empty()):
# Empty surface means we have reached EOF
break
rawFrame = nvDwl.DownloadSingleSurface(rawSurface)
if not (rawFrame.size):
break
frameByteArray = bytearray(rawFrame)
decFile.write(frameByteArray)