preventing aac playback

John Stirling <[email protected]>
Newsgroups gmane.comp.multimedia.helix.devel
Message-ID <[email protected]>
We've been applying this patch in order to selectively disable playback 
of AAC content.

This does prevent AAC content from playing. It currently just starts the 
stream, doesn't play anything and sticks there without reporting any 
errors to the TLC. We'd like it to behave as if the raac.so plugin 
didn't exist (HXR_NO_RENDERER).

I've tried a few things, but can't seem to find the correct thing to 
make this work. Can someone advise on how to do this.

John

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aac.diff.txt (text/plain, 2.6 KB)
? datatype/aac/codec/fixpt/decoder/Makefile
? datatype/aac/codec/fixpt/decoder/Umakefil.upp
? datatype/aac/codec/fixpt/decoder/armv4l-rel
? datatype/aac/codec/fixpt/decoder/rel
? datatype/aac/codec/fixpt/decoder/hxwrap/Makefile
? datatype/aac/codec/fixpt/decoder/hxwrap/Umakefil.upp
? datatype/aac/codec/fixpt/decoder/hxwrap/armv4l-rel
? datatype/aac/codec/fixpt/decoder/hxwrap/raac.exp
? datatype/aac/codec/fixpt/decoder/hxwrap/rel
? datatype/aac/codec/fixpt/decoder/hxwrap/rlink
? datatype/aac/codec/fixpt/decoder/hxwrap/umake_dll.mak
? datatype/aac/codec/fixpt/decoder/hxwrap/umake_dll.upp
? datatype/aac/codec/fixpt/decoder/hxwrap/umake_lib.mak
? datatype/aac/codec/fixpt/decoder/hxwrap/umake_lib.upp
? datatype/aac/fileformat/Makefile
? datatype/aac/fileformat/Umakefil.upp
? datatype/aac/fileformat/aacff.exp
? datatype/aac/fileformat/aacffdll.mak
? datatype/aac/fileformat/aacffdll.upp
? datatype/aac/fileformat/armv4l-rel
? datatype/aac/fileformat/rel
? datatype/aac/fileformat/rlink
? datatype/aac/parser/Makefile
? datatype/aac/parser/Umakefil.upp
? datatype/aac/parser/armv4l-rel
? datatype/aac/parser/rel
? datatype/aac/payload/Makefile
? datatype/aac/payload/Umakefil.upp
? datatype/aac/payload/armv4l-rel
? datatype/aac/payload/rel
Index: datatype/aac/codec/fixpt/decoder/hxwrap/aacdecdll.cpp
===================================================================
RCS file: /nexus/proj/InternetRadio/cvs/helix_cayenne_20070820/datatype/aac/codec/fixpt/decoder/hxwrap/aacdecdll.cpp,v
retrieving revision 1.1.1.1
diff -u -r1.1.1.1 aacdecdll.cpp
--- datatype/aac/codec/fixpt/decoder/hxwrap/aacdecdll.cpp	1 Jul 2008 15:35:05 -0000	1.1.1.1
+++ datatype/aac/codec/fixpt/decoder/hxwrap/aacdecdll.cpp	2 Sep 2008 10:46:15 -0000
@@ -46,6 +46,10 @@
 #include "aacdecdll.h"
 #include "aacconstants.h"
 
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
 const char* const CAACDec::m_pszCodecName = "RealAudio 10";
 
 CAACDec::CAACDec()
@@ -80,6 +84,15 @@
 //
 STDMETHODIMP CAACDec::QueryInterface(REFIID riid, void** ppvObj)
 {
+  /* This file controls whether we are allowed to use the AAC plugin */
+  #define ENABLE_FILE "/tmp/enable_plugin_aac"
+
+  /* Only allow AAC plugin to be used if there if file
+   * /tmp/enable_plugin_aac exists */    
+  struct stat s;
+  if (stat(ENABLE_FILE, &s) == 0)
+  {
+    printf("HELIX: AAC Plugin Manually Enabled\n");
     if (IsEqualIID(riid, IID_IHXAudioDecoder))
     {
         AddRef();
@@ -92,6 +105,11 @@
         *ppvObj = this;
         return HXR_OK;
     }
+  }
+  else
+  {
+    printf("HELIX: AAC Plugin Manually Disabled\n");
+  }
 
     *ppvObj = NULL;
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