mirror of
https://github.com/opencv/opencv.git
synced 2024-12-11 22:59:16 +08:00
117 lines
5.0 KiB
C++
117 lines
5.0 KiB
C++
/*M///////////////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
|
|
//
|
|
// By downloading, copying, installing or using the software you agree to this license.
|
|
// If you do not agree to this license, do not download, install,
|
|
// copy or use the software.
|
|
//
|
|
//
|
|
// License Agreement
|
|
// For Open Source Computer Vision Library
|
|
//
|
|
// Copyright (C) 2000-2008, Intel Corporation, all rights reserved.
|
|
// Copyright (C) 2009, Willow Garage Inc., all rights reserved.
|
|
// Copyright (C) 2013, OpenCV Foundation, all rights reserved.
|
|
// Third party copyrights are property of their respective owners.
|
|
//
|
|
// Redistribution and use in source and binary forms, with or without modification,
|
|
// are permitted provided that the following conditions are met:
|
|
//
|
|
// * Redistribution's of source code must retain the above copyright notice,
|
|
// this list of conditions and the following disclaimer.
|
|
//
|
|
// * Redistribution's in binary form must reproduce the above copyright notice,
|
|
// this list of conditions and the following disclaimer in the documentation
|
|
// and/or other materials provided with the distribution.
|
|
//
|
|
// * The name of the copyright holders may not be used to endorse or promote products
|
|
// derived from this software without specific prior written permission.
|
|
//
|
|
// This software is provided by the copyright holders and contributors "as is" and
|
|
// any express or implied warranties, including, but not limited to, the implied
|
|
// warranties of merchantability and fitness for a particular purpose are disclaimed.
|
|
// In no event shall the Intel Corporation or contributors be liable for any direct,
|
|
// indirect, incidental, special, exemplary, or consequential damages
|
|
// (including, but not limited to, procurement of substitute goods or services;
|
|
// loss of use, data, or profits; or business interruption) however caused
|
|
// and on any theory of liability, whether in contract, strict liability,
|
|
// or tort (including negligence or otherwise) arising in any way out of
|
|
// the use of this software, even if advised of the possibility of such damage.
|
|
//
|
|
//M*/
|
|
|
|
#include "precomp.hpp"
|
|
|
|
#ifdef HAVE_NVCUVID
|
|
|
|
void cv::cudacodec::detail::VideoDecoder::create(const FormatInfo& videoFormat)
|
|
{
|
|
release();
|
|
|
|
cudaVideoCodec _codec = static_cast<cudaVideoCodec>(videoFormat.codec);
|
|
cudaVideoChromaFormat _chromaFormat = static_cast<cudaVideoChromaFormat>(videoFormat.chromaFormat);
|
|
|
|
cudaVideoCreateFlags videoCreateFlags = (_codec == cudaVideoCodec_JPEG || _codec == cudaVideoCodec_MPEG2) ?
|
|
cudaVideoCreate_PreferCUDA :
|
|
cudaVideoCreate_PreferCUVID;
|
|
|
|
// Validate video format. These are the currently supported formats via NVCUVID
|
|
CV_Assert(cudaVideoCodec_MPEG1 == _codec ||
|
|
cudaVideoCodec_MPEG2 == _codec ||
|
|
cudaVideoCodec_MPEG4 == _codec ||
|
|
cudaVideoCodec_VC1 == _codec ||
|
|
cudaVideoCodec_H264 == _codec ||
|
|
cudaVideoCodec_JPEG == _codec ||
|
|
cudaVideoCodec_YUV420== _codec ||
|
|
cudaVideoCodec_YV12 == _codec ||
|
|
cudaVideoCodec_NV12 == _codec ||
|
|
cudaVideoCodec_YUYV == _codec ||
|
|
cudaVideoCodec_UYVY == _codec );
|
|
|
|
CV_Assert(cudaVideoChromaFormat_Monochrome == _chromaFormat ||
|
|
cudaVideoChromaFormat_420 == _chromaFormat ||
|
|
cudaVideoChromaFormat_422 == _chromaFormat ||
|
|
cudaVideoChromaFormat_444 == _chromaFormat);
|
|
|
|
// Fill the decoder-create-info struct from the given video-format struct.
|
|
std::memset(&createInfo_, 0, sizeof(CUVIDDECODECREATEINFO));
|
|
|
|
// Create video decoder
|
|
createInfo_.CodecType = _codec;
|
|
createInfo_.ulWidth = videoFormat.width;
|
|
createInfo_.ulHeight = videoFormat.height;
|
|
createInfo_.ulNumDecodeSurfaces = FrameQueue::MaximumSize;
|
|
|
|
// Limit decode memory to 24MB (16M pixels at 4:2:0 = 24M bytes)
|
|
while (createInfo_.ulNumDecodeSurfaces * videoFormat.width * videoFormat.height > 16 * 1024 * 1024)
|
|
createInfo_.ulNumDecodeSurfaces--;
|
|
|
|
createInfo_.ChromaFormat = _chromaFormat;
|
|
createInfo_.OutputFormat = cudaVideoSurfaceFormat_NV12;
|
|
createInfo_.DeinterlaceMode = cudaVideoDeinterlaceMode_Adaptive;
|
|
|
|
// No scaling
|
|
static const int MAX_FRAME_COUNT = 2;
|
|
|
|
createInfo_.ulTargetWidth = createInfo_.ulWidth;
|
|
createInfo_.ulTargetHeight = createInfo_.ulHeight;
|
|
createInfo_.ulNumOutputSurfaces = MAX_FRAME_COUNT; // We won't simultaneously map more than 8 surfaces
|
|
createInfo_.ulCreationFlags = videoCreateFlags;
|
|
createInfo_.vidLock = lock_;
|
|
|
|
// create the decoder
|
|
cuSafeCall( cuvidCreateDecoder(&decoder_, &createInfo_) );
|
|
}
|
|
|
|
void cv::cudacodec::detail::VideoDecoder::release()
|
|
{
|
|
if (decoder_)
|
|
{
|
|
cuvidDestroyDecoder(decoder_);
|
|
decoder_ = 0;
|
|
}
|
|
}
|
|
|
|
#endif // HAVE_NVCUVID
|