RE: Get abstrct information of media stream throughdtdriver (hxclientkit)

"Zhao, Halley" <[email protected]>
Newsgroups gmane.comp.multimedia.helix.devel
Message-ID <094BCE01AFBE9646AF220B0B3F367AAB031501B2@pdsmsx413.ccr.corp.intel.com>
  Agree, and with 2 following-up questions:
  1. for headerOnly, I will just use 3 options:
     DECODEAUDIO_OPTION_NAME, DECODEVIDEO_OPTION_NAME, PROCESSHEADERS_OPTION_NAME.
  Is it correct?
  
  2. for some common properties in both audio and video, ( I think there may be even more than one audio/video stream).
  So I'd like add integer variables in class CSourceInput, for example: m_VideoIndex, m_AudioIndex. The variables will be reset to 0 in OnFileHeader(), and increase respectively (for audio or video) in OnStreamHeader().
  And we will combine this 'stream index' with the properties name, for example: "video0:width, 320", or "audio1:AvgBitRate:32000"
  
  >-----Original Message-----
  >From: Eric Hyche [mailto:[email protected]]
  >Sent: 2008年5月19日 23:49
  >To: Zhao, Halley; [email protected]
  >Cc: Lynch, Rusty
  >Subject: RE: [Helix-client-dev] Get abstrct information of media stream
  >throughdtdriver (hxclientkit)
  >
  >
  >Halley,
  >
  >My comments:
  >
  >@@ -190,7 +222,11 @@
  >     	// pOptions->SetPropertyULONG32("StartTime", 10);
  >     	pOptions->SetPropertyULONG32("StartTime", startTime);
  >     	pOptions->SetPropertyULONG32(DECODE_OPTION_NAME, 1);
  >-    	//pOptions->SetPropertyULONG32("VideoThumbnail", 1);
  >+        if(headerOnly)
  >+        {
  >+            pOptions->SetPropertyULONG32(DECODEAUDIO_OPTION_NAME, 1);
  >+            pOptions->SetPropertyULONG32("ProcessHeadersOnly", 1);
  >+        }
  >
  >If you are setting "ProcessHeadersOnly", then you should NOT be
  >setting any of the other decode-related options. The reason is that
  >if you are decoding, then some of the file header properties are not
  >provided, and also that the stream header properties are different
  >when decoding.
  >
  >@@ -650,18 +782,22 @@
  >     //printf ("CSourceInput::OnStreamHeader\n");
  >     IHXBuffer* pMime = NULL;
  >     pValues->GetPropertyCString("MimeType", pMime);
  >-    //printf("Stream MimeType: %s\n", pMime->GetBuffer());
  >+    if( '\0' == g_sMimeType[0])
  >+    {
  >+        strcat( g_sMimeType, pMime->GetBuffer() );
  >+    }
  >+    else
  >+    {
  >+        strcat(g_sMimeType, ":");
  >+        strcat( g_sMimeType, pMime->GetBuffer() );
  >+    }
  >
  >This runs the risk of buffer overrun since g_sMimeType is a fixed-length
  >buffer of length 256. You should use SafeSprintf or SafeStrCat
  >defined in common/runtime/pub/safestring.h instead.
  >
  >@@ -80,13 +80,16 @@
  >     IHXDataTypeDriverResponse* m_pDTDResponse;
  >     IHXSourceInput* m_pSourceInput;
  >
  >+    bool m_bHeaderOnly ;
  >
  >We should use HX_BOOL here instead.
  >
  >
  >-/*
  >-    UINT32 ulChan = 0;
  >-    pValues->GetPropertyULONG32("Channels", ulChan);
  >-    if (ulChan == 2)
  >+    if( NULL != pValues)
  >     {
  >-	printf("Stereo\n");
  >+        DumpMediaInfo(pValues);
  >     }
  >-*/
  >-    //UINT32 ulSamplsPerSec = 0;
  >+
  >
  >This looks like you are passing both stream headers into DumpMediaInfo().
  >Both audio and video headers will have several properties in common, such
  >as "AvgBitRate". How will you distinguish between the "AvgBitRate" of
  >a video stream and an "AvgBitRate" of an audio stream?
  >
  >Rest looks good.
  >
  >Eric
  >=============================================
  >Eric Hyche ([email protected])
  >Technical Lead
  >RealNetworks, Inc.
  >
  >> -----Original Message-----
  >> From: Zhao, Halley [mailto:[email protected]]
  >> Sent: Tuesday, May 13, 2008 8:24 PM
  >> To: [email protected]; [email protected]
  >> Cc: Lynch, Rusty
  >> Subject: RE: [Helix-client-dev] Get abstrct information of
  >> media stream throughdtdriver (hxclientkit)
  >>
  >>   Sorry for mistake.
  >>
  >>   Attach the patch file.
  >>
  >>
  >>   >-----Original Message-----
  >>   >From: Eric Hyche [mailto:[email protected]]
  >>   >Sent: 2008年5月13日 23:45
  >>   >To: Zhao, Halley; [email protected]
  >>   >Cc: Lynch, Rusty
  >>   >Subject: RE: [Helix-client-dev] Get abstrct information of
  >> media stream
  >>   >throughdtdriver (hxclientkit)
  >>   >
  >>   >
  >>   >> Files Attached:
  >>   >>
  >>   >>     hxclientkit-mediaAbstractInfo.diff.txt
  >>   >>
  >>   >
  >>   >I didn't see any such file attached to the
  >>   >CR email.
  >>   >
  >>   >Eric
  >>   >
  >>   >=============================================
  >>   >Eric Hyche ([email protected])
  >>   >Technical Lead
  >>   >RealNetworks, Inc.
  >>   >
  >>   >> -----Original Message-----
  >>   >> From: [email protected]
  >>   >> [mailto:[email protected]] On
  >>   >> Behalf Of Zhao, Halley
  >>   >> Sent: Tuesday, May 13, 2008 5:56 AM
  >>   >> To: [email protected]
  >>   >> Cc: Lynch, Rusty
  >>   >> Subject: [Helix-client-dev] Get abstrct information of media
  >>   >> stream throughdtdriver (hxclientkit)
  >>   >>
  >>   >> Synopsis:
  >>   >>
  >>   >>     Get abstrct information of media stream through dtdriver
  >>   >>
  >>   >> Overview:
  >>   >>
  >>   >>     use dtdriver plugin to parse a media stream's file/stream
  >>   >> header to get some information,
  >>   >>
  >>   >>     for example: Title, width, hegith, Copyright, etc.
  >>   >>
  >>   >>
  >>   >>
  >>   >> Files Added:
  >>   >>
  >>   >>        No file added
  >>   >>
  >>   >> Files Modified:
  >>   >>
  >>   >>     player/hxclientkit/pub/HXClientCFuncs.h
  >>   >>
  >>   >>     player/hxclientkit/pub/HXClientCallbacks.h
  >>   >>
  >>   >>
  >player/hxclientkit/src/platform/unix/CHXClientThumbnailUnix.h
  >>   >>
  >>   >>         function and variables declaration
  >>   >>
  >>   >>
  >>   >>
  >>   >>
  >> player/hxclientkit/src/platform/unix/CHXClientThumbnailUnix.cpp
  >>   >>
  >>   >>         function implementation
  >>   >>
  >>   >>
  >>   >>
  >>   >>
  >>   >>
  >>   >> Image Size and Heap Use impact (Client -Only):
  >>   >>
  >>   >>     little
  >>   >>
  >>   >> Platforms and Profiles Affected:
  >>   >>
  >>   >>     platform:   linux-2.2-libc6-gcc32-i586
  >>   >>
  >>   >>     profile:    helix-client-all-defines
  >>   >>
  >>   >>
  >>   >>
  >>   >> Distribution Libraries Affected:
  >>   >>
  >>   >>     <libhxclient.a>
  >>   >>
  >>   >> Distribution library impact and planned action:
  >>   >>
  >>   >>     <None>
  >>   >>
  >>   >> Platforms and Profiles Build Verified:
  >>   >>
  >>   >>     Set BIF branch  -> hxdbus_3_1_0_atlas
  >>   >>
  >>   >>     Set Target(s)   -> dbus_server_with_video
  >>   >>
  >>   >>     Set Profile     -> helix-client-all-defines
  >>   >>
  >>   >>     System ID       -> linux-2.2-libc6-gcc32-i586
  >>   >>
  >>   >> Branch:
  >>   >>
  >>   >>     HEAD, hxclient_3_1_0_atlas
  >>   >>
  >>   >> Copyright assignment: <MUST be one of the following statements >
  >>   >>
  >>   >>    2.      Intel has signed and delivered a Joint
  >> Copyright Assignment
  >>   >>
  >>   >>            to RealNetworks, and received acknowledgment that the
  >>   >>
  >>   >>            agreement was received.
  >>   >>
  >>   >> Files Attached:
  >>   >>
  >>   >>     hxclientkit-mediaAbstractInfo.diff.txt
  >>   >>
  >>   >>
  >>   >>
  >>   >> ZHAO, Halley (Aihua)
  >>   >>
  >>   >> Email: [email protected] <mailto:[email protected]>
  >>   >>
  >>   >> Tel: +86(21)61166476
  >>   >>
  >>   >> iNet: 8821-6476
  >>   >>
  >>   >> SSG/OTC/UMD
  >>   >>
  >>   >>
  >>   >>
  >>   >>
  >>
  >>
  

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