MXF Reader Lib

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{{This|av_objects/splitters%26readers/MXFReaderLib.html}}
 
{{This|av_objects/splitters%26readers/MXFReaderLib.html}}
 
<!--SORT=1-->
 
<!--SORT=1-->
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__NOTOC__
  
 
TODO: Description
 
TODO: Description
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==Interfaces&Methods==
 
==Interfaces&Methods==
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Object implements follows methods of [http://avobjects.com/interfaces/iavobject.html IAVObject Interface]:
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 +
Object implements follows methods of [[:Category:IAVObject|IAVObject Interface]]
 
*[[Method Init|Init()]]
 
*[[Method Init|Init()]]
 +
 
*[[Method Close|Close()]]
 
*[[Method Close|Close()]]
 +
 
*[[Method CanGetFrame|CanGetFrame()]]
 
*[[Method CanGetFrame|CanGetFrame()]]
 +
 
*[[Method GetFrame|GetFrame()]]
 
*[[Method GetFrame|GetFrame()]]
  
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[http://avobjects.com/interfaces/iavproperties.html IAVProperties Interface] used for sets ang gets values of MXF Reader Lib properties.
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[[:Category:IAVProperties|IAVProperties Interface]] used for sets ang gets values of MXF Reader Lib properties.
 +
 
 
==Properties==
 
==Properties==
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{|
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−
|-
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| '''format'''
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<table class=prop>
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| BSTR  
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{{AVOProp|format|BSTR|ReadOnly|File format - "MXF"}}
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| RO
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{{AVOProp|format_name|BSTR|ReadOnly|File format description - "MXF (Material eXchange Format)"}}
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| File format
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{{AVOProp|source|BSTR|ReadWrite|Name of file}}
−
|-
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{{AVOProp|streams|array of objects|ReadWrite|Array of media streams for file}}
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| '''format_name'''
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{{AVOProp|start_time|LONGLONG|ReadOnly|Start timecode in frames}}
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| BSTR  
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{{AVOProp|duration|double|ReadOnly|File duration in second}}
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| RO
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{{AVOProp|ext_audio|bool|ReadWrite|Enable external audio file,as example for Panasonic P2 }}
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| File format description
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{{AVOProp|fw_play|bool|ReadWrite|Play direction, ''true'' for forward, ''false'' for backward}}
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|-
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{{AVOProp|aes_key|BSTR|ReadWrite|Encription key for DCI files in HEX format XX.XX.XX.XX.XX.XX.XX.XX.XX.XX.XX.XX.XX.XX.XX.XX, dots may be omnited or replaced to any delimiter}}
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| '''source'''
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{{AVOProp|metadata_xml|BSTR|ReadOnly|String with XML metadata according SMPTE 434-2006}}
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| BSTR  
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</table>
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| RW
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−
| Name of file
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−
|-
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−
| '''start_time'''
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−
| double
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−
| RO
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−
| Start timecode
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−
|-
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−
| '''duration'''
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−
| double
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−
| RO
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−
| File duration in second
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−
|-
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−
| '''ext_audio'''
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| bool
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| RW
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−
| Enable external audio file, as example for Panasonic P2  
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−
|-
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−
| '''fw_play'''
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| bool
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−
| RW
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−
| Play direction, true for forward, false  fo backward
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−
|-
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−
| '''aes_key'''
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−
| BSTR
+
−
| RW
+
−
| Encription key for DCI files in HEX format XX.XX.XX.XX.XX.XX.XX.XX.XX.XX.XX.XX.XX.XX.XX.XX dot may be omnited or replaced to any delimiter
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−
|-
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−
| '''streams'''
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−
| array of objects
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−
| RW
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−
| Array of media streams for file
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−
|}
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−
TODO: Properties
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==Samples==
 
==Samples==
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{{AVO Sample of create and Initialize|MXFReader}}
 
{{AVO Sample of trace properties}}
 
{{AVO Sample of trace properties}}
−
 
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{{AVO Sample of copy stream}}
  
 
[[Category:Splitters&Readers]]
 
[[Category:Splitters&Readers]]

Latest revision as of 15:23, 11 July 2014

This page is a copy of the original page on the AVObjects' web site and can also be viewed here.


TODO: Description

Overview

TODO: Overview

Interfaces&Methods

Object implements follows methods of IAVObject Interface

IAVProperties Interface used for sets ang gets values of MXF Reader Lib properties.

Properties

formatBSTRReadOnly
File format - "MXF"
format_nameBSTRReadOnly
File format description - "MXF (Material eXchange Format)"
sourceBSTRReadWrite
Name of file
streamsarray of objectsReadWrite
Array of media streams for file
start_timeLONGLONGReadOnly
Start timecode in frames
durationdoubleReadOnly
File duration in second
ext_audioboolReadWrite
Enable external audio file,as example for Panasonic P2
fw_playboolReadWrite
Play direction, true for forward, false for backward
aes_keyBSTRReadWrite
Encription key for DCI files in HEX format XX.XX.XX.XX.XX.XX.XX.XX.XX.XX.XX.XX.XX.XX.XX.XX, dots may be omnited or replaced to any delimiter
metadata_xmlBSTRReadOnly
String with XML metadata according SMPTE 434-2006


Samples

Create and Initialize

//---------------------------------
// Create {{{1}}} object
CComPtr<IAVObject>;	spReader;
 
HRESULT hr = Create_{{{1}}}(&spReader); 
if (hr != S_OK)
   return hr;
 
//---------------------------------
// Query IAVProperties interface
CComQIPtr<IAVProperties> spProps(spReader);
ATLASSERT(spProps != NULL);
 
//---------------------------------
// Set filename
hr = spProps->PropsSet(L"source", L"filename.ext");
if(hr != S_OK)
  return hr;
 
//---------------------------------
// Init Object
hr = spReader->Init();
if(hr != S_OK)
  return hr;

Trace all object's properties

//Query IAVProperties interface
CComQIPtr<IAVProperties> spProps(spObject);
 
//Get list name=value pairs separated CR
//for all properties of object
CComBSTR cbsPropsList;
HRESULT hr = spProps->PropsGet(L"\n", cbsPropsList);
ATLASSERT(hr == S_OK);
 
//Trace properties	
ATLTRACE2(atlTraceGeneral, 2, L"Qbject's properties:\n%s\n", 
  spPropsList);

Copy stream

//BYTE* pbBuffer - pointer to frame buffer
//DWORD cbBuffer - size of frane buffer in bytes
//int nStream - index of stream
 
HRESULT hr = S_OK;
while(1)
{
  hr = spDest->CanPutFrame(nStream, INFINITE);
  if ( hr != S_OK )
     return hr;
 
  hr = spSource->CanGetFrame(nStream, INFINITE);
  if (hr != S_OK)
    return hr;
 
  DWORD cbActual = 0;
  REFERENCE_TIME tS = 0, tE = 0;
  DWORD dwFlags = 0;
 
  hr = spSource->GetFrame(nStream, pbBuffer, cbBuffer,
    &cbActual, &dwFlags, &tS, &tE, NULL);
  if (hr == S_OK)
  {
     hr = spDest->PutFrame(nStream, m_pbBuffer, cbActual, 
        dwFlags, tS, tE, NULL);
  }
  else if (hr == HRESULT_FROM_WIN32(ERROR_HANDLE_EOF))
  {
     // EOS, put empty frame to dest
     hr = spDest->PutFrame(nStream, NULL, 0, 0, 0, 0, NULL);
     if (hr == S_OK)
        return hr;
  }  
  if (FAILED(hr))
    return hr;
}
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