Add OpenReadFrame passing some raw memory buffer.

1 files changed, 27 insertions, 0 deletions

diff --git a/src/JP2K_Codestream_Parser.cpp b/src/JP2K_Codestream_Parser.cpp
index d68b52a..cbaf9b8 100755
--- a/src/JP2K_Codestream_Parser.cpp
+++ b/src/JP2K_Codestream_Parser.cpp
@@ -90,6 +90,26 @@ public:
 
     return result;
   }
+
+  Result_t OpenReadFrame(const void* 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 +291,13 @@ ASDCP::JP2K::CodestreamParser::OpenReadFrame(const std::string& filename, FrameB
   return m_Parser->OpenReadFrame(filename, FB);
 }
 
+ASDCP::Result_t
+ASDCP::JP2K::CodestreamParser::OpenReadFrame(const void* data, int size, FrameBuffer& FB) const
+{
+  const_cast<ASDCP::JP2K::CodestreamParser*>(this)->m_Parser = new h__CodestreamParser;
+  return m_Parser->OpenReadFrame(data, size, FB);
+}
+
 //
 ASDCP::Result_t
 ASDCP::JP2K::CodestreamParser::FillPictureDescriptor(PictureDescriptor& PDesc) const