From 59670db83c13807eda5b63704c0fac90aebe68e4 Mon Sep 17 00:00:00 2001 From: Carl Hetherington Date: Sat, 16 Mar 2024 21:04:15 +0100 Subject: Add another OpenReadFrame method for JP2K::CodestreamParser. --- src/JP2K_Codestream_Parser.cpp | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) (limited to 'src/JP2K_Codestream_Parser.cpp') diff --git a/src/JP2K_Codestream_Parser.cpp b/src/JP2K_Codestream_Parser.cpp index d68b52a..08b93f3 100755 --- a/src/JP2K_Codestream_Parser.cpp +++ b/src/JP2K_Codestream_Parser.cpp @@ -90,6 +90,26 @@ public: return result; } + + Result_t OpenReadFrame(const unsigned char * data, unsigned int size, FrameBuffer& FB) + { + if ( FB.Capacity() < size ) + { + DefaultLogSink().Error("FrameBuf.Capacity: %u frame length: %u\n", FB.Capacity(), (ui32_t) size); + return RESULT_SMALLBUF; + } + + memcpy (FB.Data(), data, size); + FB.Size(size); + + byte_t start_of_data = 0; // out param + const Result_t result = ParseMetadataIntoDesc(FB, m_PDesc, &start_of_data); + + if ( ASDCP_SUCCESS(result) ) + FB.PlaintextOffset(start_of_data); + + return result; + } }; ASDCP::Result_t @@ -271,6 +291,15 @@ ASDCP::JP2K::CodestreamParser::OpenReadFrame(const std::string& filename, FrameB return m_Parser->OpenReadFrame(filename, FB); } +// Opens the stream for reading, parses enough data to provide a complete +// set of stream metadata for the MXFWriter below. +ASDCP::Result_t +ASDCP::JP2K::CodestreamParser::OpenReadFrame(const unsigned char* data, unsigned int size, FrameBuffer& FB) const +{ + const_cast(this)->m_Parser = new h__CodestreamParser; + return m_Parser->OpenReadFrame(data, size, FB); +} + // ASDCP::Result_t ASDCP::JP2K::CodestreamParser::FillPictureDescriptor(PictureDescriptor& PDesc) const -- cgit v1.2.3