1 /*M/////////////////////////////////////////////////////////////////////////////////////// 2 // 3 // IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING. 4 // 5 // By downloading, copying, installing or using the software you agree to this license. 6 // If you do not agree to this license, do not download, install, 7 // copy or use the software. 8 // 9 // 10 // License Agreement 11 // For Open Source Computer Vision Library 12 // 13 // Copyright (C) 2000-2008, Intel Corporation, all rights reserved. 14 // Copyright (C) 2009, Willow Garage Inc., all rights reserved. 15 // Copyright (C) 2013, OpenCV Foundation, all rights reserved. 16 // Third party copyrights are property of their respective owners. 17 // 18 // Redistribution and use in source and binary forms, with or without modification, 19 // are permitted provided that the following conditions are met: 20 // 21 // * Redistribution's of source code must retain the above copyright notice, 22 // this list of conditions and the following disclaimer. 23 // 24 // * Redistribution's in binary form must reproduce the above copyright notice, 25 // this list of conditions and the following disclaimer in the documentation 26 // and/or other materials provided with the distribution. 27 // 28 // * The name of the copyright holders may not be used to endorse or promote products 29 // derived from this software without specific prior written permission. 30 // 31 // This software is provided by the copyright holders and contributors "as is" and 32 // any express or implied warranties, including, but not limited to, the implied 33 // warranties of merchantability and fitness for a particular purpose are disclaimed. 34 // In no event shall the Intel Corporation or contributors be liable for any direct, 35 // indirect, incidental, special, exemplary, or consequential damages 36 // (including, but not limited to, procurement of substitute goods or services; 37 // loss of use, data, or profits; or business interruption) however caused 38 // and on any theory of liability, whether in contract, strict liability, 39 // or tort (including negligence or otherwise) arising in any way out of 40 // the use of this software, even if advised of the possibility of such damage. 41 // 42 //M*/ 43 44 #include "precomp.hpp" 45 46 #ifdef HAVE_NVCUVID 47 48 cv::cudacodec::detail::VideoParser::VideoParser(VideoDecoder* videoDecoder, FrameQueue* frameQueue) : 49 videoDecoder_(videoDecoder), frameQueue_(frameQueue), unparsedPackets_(0), hasError_(false) 50 { 51 CUVIDPARSERPARAMS params; 52 std::memset(¶ms, 0, sizeof(CUVIDPARSERPARAMS)); 53 54 params.CodecType = videoDecoder->codec(); 55 params.ulMaxNumDecodeSurfaces = videoDecoder->maxDecodeSurfaces(); 56 params.ulMaxDisplayDelay = 1; // this flag is needed so the parser will push frames out to the decoder as quickly as it can 57 params.pUserData = this; 58 params.pfnSequenceCallback = HandleVideoSequence; // Called before decoding frames and/or whenever there is a format change 59 params.pfnDecodePicture = HandlePictureDecode; // Called when a picture is ready to be decoded (decode order) 60 params.pfnDisplayPicture = HandlePictureDisplay; // Called whenever a picture is ready to be displayed (display order) 61 62 cuSafeCall( cuvidCreateVideoParser(&parser_, ¶ms) ); 63 } 64 65 bool cv::cudacodec::detail::VideoParser::parseVideoData(const unsigned char* data, size_t size, bool endOfStream) 66 { 67 CUVIDSOURCEDATAPACKET packet; 68 std::memset(&packet, 0, sizeof(CUVIDSOURCEDATAPACKET)); 69 70 if (endOfStream) 71 packet.flags |= CUVID_PKT_ENDOFSTREAM; 72 73 packet.payload_size = static_cast<unsigned long>(size); 74 packet.payload = data; 75 76 if (cuvidParseVideoData(parser_, &packet) != CUDA_SUCCESS) 77 { 78 hasError_ = true; 79 frameQueue_->endDecode(); 80 return false; 81 } 82 83 const int maxUnparsedPackets = 15; 84 85 ++unparsedPackets_; 86 if (unparsedPackets_ > maxUnparsedPackets) 87 { 88 hasError_ = true; 89 frameQueue_->endDecode(); 90 return false; 91 } 92 93 if (endOfStream) 94 frameQueue_->endDecode(); 95 96 return !frameQueue_->isEndOfDecode(); 97 } 98 99 int CUDAAPI cv::cudacodec::detail::VideoParser::HandleVideoSequence(void* userData, CUVIDEOFORMAT* format) 100 { 101 VideoParser* thiz = static_cast<VideoParser*>(userData); 102 103 thiz->unparsedPackets_ = 0; 104 105 if (format->codec != thiz->videoDecoder_->codec() || 106 format->coded_width != thiz->videoDecoder_->frameWidth() || 107 format->coded_height != thiz->videoDecoder_->frameHeight() || 108 format->chroma_format != thiz->videoDecoder_->chromaFormat()) 109 { 110 FormatInfo newFormat; 111 112 newFormat.codec = static_cast<Codec>(format->codec); 113 newFormat.chromaFormat = static_cast<ChromaFormat>(format->chroma_format); 114 newFormat.width = format->coded_width; 115 newFormat.height = format->coded_height; 116 117 try 118 { 119 thiz->videoDecoder_->create(newFormat); 120 } 121 catch (const cv::Exception&) 122 { 123 thiz->hasError_ = true; 124 return false; 125 } 126 } 127 128 return true; 129 } 130 131 int CUDAAPI cv::cudacodec::detail::VideoParser::HandlePictureDecode(void* userData, CUVIDPICPARAMS* picParams) 132 { 133 VideoParser* thiz = static_cast<VideoParser*>(userData); 134 135 thiz->unparsedPackets_ = 0; 136 137 bool isFrameAvailable = thiz->frameQueue_->waitUntilFrameAvailable(picParams->CurrPicIdx); 138 139 if (!isFrameAvailable) 140 return false; 141 142 if (!thiz->videoDecoder_->decodePicture(picParams)) 143 { 144 thiz->hasError_ = true; 145 return false; 146 } 147 148 return true; 149 } 150 151 int CUDAAPI cv::cudacodec::detail::VideoParser::HandlePictureDisplay(void* userData, CUVIDPARSERDISPINFO* picParams) 152 { 153 VideoParser* thiz = static_cast<VideoParser*>(userData); 154 155 thiz->unparsedPackets_ = 0; 156 157 thiz->frameQueue_->enqueue(picParams); 158 159 return true; 160 } 161 162 #endif // HAVE_NVCUVID 163
