/* Copyright (c) 2004-2013, John Hurst, Copyright (c) 2020, Thomas Richter Fraunhofer IIS, Copyright (c) 2020, Christian Minuth Fraunhofer IIS, All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions 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. 3. The name of the author may not be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. */ /*! \file JXS_Sequence_Parser.cpp \version $Id$ \brief AS-DCP library, JPEG XS sequence codestream essence reader implementation */ #include using namespace ASDCP; //------------------------------------------------------------------------------------------ class FileList : public std::list { std::string m_DirName; public: FileList() {} ~FileList() {} const FileList& operator=(const std::list& pathlist) { std::list::const_iterator i; for (i = pathlist.begin(); i != pathlist.end(); i++) push_back(*i); return *this; } // Result_t InitFromDirectory(const std::string& path) { char next_file[Kumu::MaxFilePath]; Kumu::DirScanner Scanner; Result_t result = Scanner.Open(path); if (ASDCP_SUCCESS(result)) { m_DirName = path; while (ASDCP_SUCCESS(Scanner.GetNext(next_file))) { if (next_file[0] == '.') // no hidden files or internal links continue; std::string Str(m_DirName); Str += "/"; Str += next_file; if (!Kumu::PathIsDirectory(Str)) push_back(Str); } sort(); } return result; } }; //------------------------------------------------------------------------------------------ class ASDCP::JXS::SequenceParser::h__SequenceParser { ui32_t m_FramesRead; Rational m_PictureRate; FileList m_FileList; FileList::iterator m_CurrentFile; CodestreamParser m_Parser; Result_t OpenRead(); ASDCP_NO_COPY_CONSTRUCT(h__SequenceParser); public: ASDCP::MXF::GenericPictureEssenceDescriptor m_PDesc; ASDCP::MXF::JPEGXSPictureSubDescriptor m_JxsSubdesc; h__SequenceParser() : m_FramesRead(0), m_PDesc(&DefaultSMPTEDict()), m_JxsSubdesc(&DefaultSMPTEDict()) {} ~h__SequenceParser() { Close(); } Result_t OpenRead(const std::string& filename); Result_t OpenRead(const std::list& file_list); void Close() {} Result_t Reset() { m_FramesRead = 0; m_CurrentFile = m_FileList.begin(); return RESULT_OK; } Result_t ReadFrame(FrameBuffer&); }; // ASDCP::Result_t ASDCP::JXS::SequenceParser::h__SequenceParser::OpenRead() { if (m_FileList.empty()) return RESULT_ENDOFFILE; m_CurrentFile = m_FileList.begin(); CodestreamParser Parser; FrameBuffer TmpBuffer; Kumu::fsize_t file_size = Kumu::FileSize((*m_CurrentFile).c_str()); if (file_size == 0) return RESULT_NOT_FOUND; assert(file_size <= 0xFFFFFFFFL); Result_t result = TmpBuffer.Capacity((ui32_t)file_size); if (ASDCP_SUCCESS(result)) result = Parser.OpenReadFrame((*m_CurrentFile).c_str(), TmpBuffer); if (ASDCP_SUCCESS(result)) result = Parser.FillPictureDescriptor(m_PDesc, m_JxsSubdesc); // how big is it? if (ASDCP_SUCCESS(result)) m_PDesc.ContainerDuration = m_FileList.size(); return result; } // ASDCP::Result_t ASDCP::JXS::SequenceParser::h__SequenceParser::OpenRead(const std::string& filename) { Result_t result = m_FileList.InitFromDirectory(filename); if (ASDCP_SUCCESS(result)) result = OpenRead(); return result; } // ASDCP::Result_t ASDCP::JXS::SequenceParser::h__SequenceParser::OpenRead(const std::list& file_list) { m_FileList = file_list; return OpenRead(); } // ASDCP::Result_t ASDCP::JXS::SequenceParser::h__SequenceParser::ReadFrame(FrameBuffer& FB) { if (m_CurrentFile == m_FileList.end()) return RESULT_ENDOFFILE; // open the file Result_t result = m_Parser.OpenReadFrame((*m_CurrentFile).c_str(), FB); if (ASDCP_SUCCESS(result)) { FB.FrameNumber(m_FramesRead++); m_CurrentFile++; } return result; } //------------------------------------------------------------------------------------------ ASDCP::JXS::SequenceParser::SequenceParser() { } ASDCP::JXS::SequenceParser::~SequenceParser() { } // Opens the stream for reading, parses enough data to provide a complete // set of stream metadata for the MXFWriter below. ASDCP::Result_t ASDCP::JXS::SequenceParser::OpenRead(const std::string& filename) const { const_cast(this)->m_Parser = new h__SequenceParser; Result_t result = m_Parser->OpenRead(filename); if (ASDCP_FAILURE(result)) const_cast(this)->m_Parser.release(); return result; } // Result_t ASDCP::JXS::SequenceParser::OpenRead(const std::list& file_list) const { const_cast(this)->m_Parser = new h__SequenceParser; Result_t result = m_Parser->OpenRead(file_list); if (ASDCP_FAILURE(result)) const_cast(this)->m_Parser.release(); return result; } // Rewinds the stream to the beginning. ASDCP::Result_t ASDCP::JXS::SequenceParser::Reset() const { if (m_Parser.empty()) return RESULT_INIT; return m_Parser->Reset(); } // Places a frame of data in the frame buffer. Fails if the buffer is too small // or the stream is empty. ASDCP::Result_t ASDCP::JXS::SequenceParser::ReadFrame(FrameBuffer& FB) const { if (m_Parser.empty()) return RESULT_INIT; return m_Parser->ReadFrame(FB); } // ASDCP::Result_t ASDCP::JXS::SequenceParser::FillPictureDescriptor( ASDCP::MXF::GenericPictureEssenceDescriptor& picture_descriptor, ASDCP::MXF::JPEGXSPictureSubDescriptor& jxs_subdescriptor) const { if (m_Parser.empty()) return RESULT_INIT; picture_descriptor = m_Parser->m_PDesc; jxs_subdescriptor = m_Parser->m_JxsSubdesc; return RESULT_OK; } // // end JXS_Sequence_Parser.cpp //