new stuff

1 files changed, 241 insertions, 0 deletions

diff --git a/src/AS_DCP_TimedText.cpp b/src/AS_DCP_TimedText.cpp
new file mode 100644
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+++ b/src/AS_DCP_TimedText.cpp
@@ -0,0 +1,241 @@
+/*
+Copyright (c) 2007, John Hurst
+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    AS_DCP_TimedText.cpp
+    \version $Id$       
+    \brief   AS-DCP library, PCM essence reader and writer implementation
+*/
+
+
+#include "AS_DCP_internal.h"
+#include "AS_DCP_TimedText.h"
+#include "KM_xml.h"
+
+using namespace Kumu;
+using namespace ASDCP;
+
+
+//------------------------------------------------------------------------------------------
+
+//
+void
+ASDCP::TimedText::FrameBuffer::Dump(FILE* stream, ui32_t dump_len) const
+{
+  if ( stream == 0 )
+    stream = stderr;
+
+  UUID TmpID(m_AssetID);
+  char buf[64];
+  fprintf(stream, "ID: %s (type %s)\n", TmpID.EncodeHex(buf, 64), m_MIMEType.c_str());
+
+  if ( dump_len > 0 )
+    Kumu::hexdump(m_Data, dump_len, stream);
+}
+
+//------------------------------------------------------------------------------------------
+
+class ASDCP::TimedText::MXFReader::h__Reader : public ASDCP::h__Reader
+{
+  TimedTextDescriptor*        m_EssenceDescriptor;
+
+  ASDCP_NO_COPY_CONSTRUCT(h__Reader);
+
+public:
+  TimedTextDescriptor m_TDesc;    
+
+  h__Reader() : m_EssenceDescriptor(0) {}
+  Result_t    OpenRead(const char*);
+  Result_t    ReadFrame(ui32_t, FrameBuffer&, AESDecContext*, HMACContext*);
+  Result_t    ReadFrameGOPStart(ui32_t, FrameBuffer&, AESDecContext*, HMACContext*);
+  Result_t    MD_to_TimedText_PDesc(TimedText::TimedTextDescriptor& TDesc);
+};
+
+//------------------------------------------------------------------------------------------
+
+ASDCP::TimedText::MXFReader::MXFReader()
+{
+  m_Reader = new h__Reader;
+}
+
+
+ASDCP::TimedText::MXFReader::~MXFReader()
+{
+}
+
+// Open the file for reading. The file must exist. Returns error if the
+// operation cannot be completed.
+ASDCP::Result_t
+ASDCP::TimedText::MXFReader::OpenRead(const char* filename) const
+{
+  return m_Reader->OpenRead(filename);
+}
+
+//
+ASDCP::Result_t
+ASDCP::TimedText::MXFReader::ReadFrame(ui32_t FrameNum, FrameBuffer& FrameBuf,
+				   AESDecContext* Ctx, HMACContext* HMAC) const
+{
+  if ( m_Reader && m_Reader->m_File.IsOpen() )
+    return m_Reader->ReadFrame(FrameNum, FrameBuf, Ctx, HMAC);
+
+  return RESULT_INIT;
+}
+
+
+// Fill the struct with the values from the file's header.
+// Returns RESULT_INIT if the file is not open.
+ASDCP::Result_t
+ASDCP::TimedText::MXFReader::FillDescriptor(TimedText::TimedTextDescriptor& TDesc) const
+{
+  if ( m_Reader && m_Reader->m_File.IsOpen() )
+    {
+      TDesc = m_Reader->m_TDesc;
+      return RESULT_OK;
+    }
+
+  return RESULT_INIT;
+}
+
+
+// Fill the struct with the values from the file's header.
+// Returns RESULT_INIT if the file is not open.
+ASDCP::Result_t
+ASDCP::TimedText::MXFReader::FillWriterInfo(WriterInfo& Info) const
+{
+  if ( m_Reader && m_Reader->m_File.IsOpen() )
+    {
+      Info = m_Reader->m_Info;
+      return RESULT_OK;
+    }
+
+  return RESULT_INIT;
+}
+
+//
+void
+ASDCP::TimedText::MXFReader::DumpHeaderMetadata(FILE* stream) const
+{
+  if ( m_Reader->m_File.IsOpen() )
+    m_Reader->m_HeaderPart.Dump(stream);
+}
+
+
+//
+void
+ASDCP::TimedText::MXFReader::DumpIndex(FILE* stream) const
+{
+  if ( m_Reader->m_File.IsOpen() )
+    m_Reader->m_FooterPart.Dump(stream);
+}
+
+//------------------------------------------------------------------------------------------
+
+
+//
+class ASDCP::TimedText::MXFWriter::h__Writer : public ASDCP::h__Writer
+{
+public:
+  TimedTextDescriptor m_TDesc;
+  byte_t              m_EssenceUL[SMPTE_UL_LENGTH];
+
+  ASDCP_NO_COPY_CONSTRUCT(h__Writer);
+
+  h__Writer() {
+    memset(m_EssenceUL, 0, SMPTE_UL_LENGTH);
+  }
+
+  ~h__Writer(){}
+
+  Result_t OpenWrite(const char*, ui32_t HeaderSize);
+  Result_t SetSourceStream(const TimedTextDescriptor&);
+  Result_t WriteFrame(const FrameBuffer&, AESEncContext* = 0, HMACContext* = 0);
+  Result_t Finalize();
+  Result_t TimedText_PDesc_to_MD(TimedText::TimedTextDescriptor& PDesc);
+};
+
+
+//------------------------------------------------------------------------------------------
+
+ASDCP::TimedText::MXFWriter::MXFWriter()
+{
+}
+
+ASDCP::TimedText::MXFWriter::~MXFWriter()
+{
+}
+
+
+// Open the file for writing. The file must not exist. Returns error if
+// the operation cannot be completed.
+ASDCP::Result_t
+ASDCP::TimedText::MXFWriter::OpenWrite(const char* filename, const WriterInfo& Info,
+				       const TimedTextDescriptor& TDesc, ui32_t HeaderSize)
+{
+  m_Writer = new h__Writer;
+  
+  Result_t result = m_Writer->OpenWrite(filename, HeaderSize);
+
+  if ( ASDCP_SUCCESS(result) )
+    {
+      m_Writer->m_Info = Info;
+      result = m_Writer->SetSourceStream(TDesc);
+    }
+
+  if ( ASDCP_FAILURE(result) )
+    m_Writer.release();
+
+  return result;
+}
+
+
+// Writes a frame of essence to the MXF file. If the optional AESEncContext
+// argument is present, the essence is encrypted prior to writing.
+// Fails if the file is not open, is finalized, or an operating system
+// error occurs.
+ASDCP::Result_t
+ASDCP::TimedText::MXFWriter::WriteFrame(const FrameBuffer& FrameBuf, AESEncContext* Ctx, HMACContext* HMAC)
+{
+  if ( m_Writer.empty() )
+    return RESULT_INIT;
+
+  return m_Writer->WriteFrame(FrameBuf, Ctx, HMAC);
+}
+
+// Closes the MXF file, writing the index and other closing information.
+ASDCP::Result_t
+ASDCP::TimedText::MXFWriter::Finalize()
+{
+  if ( m_Writer.empty() )
+    return RESULT_INIT;
+
+  return m_Writer->Finalize();
+}
+
+
+
+//
+// end AS_DCP_timedText.cpp
+//