dash: Reworking MPD tree building.

First build a DOM tree, then compute the MPD tree.
This should ease the pain later when implementing UrlTemplate elements.
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

modules/stream_filter/dash/DASHManager.cpp

@@ -34,15 +34,17 @@ using namespace dash::logic;
 using namespace dash::mpd;
 using namespace dash::exception;
 
-DASHManager::DASHManager    ( HTTPConnectionManager *conManager, Node *node, IAdaptationLogic::LogicType type )
+DASHManager::DASHManager    ( HTTPConnectionManager *conManager, MPD *mpd,
+                              IAdaptationLogic::LogicType type ) :
+    conManager( conManager ),
+    currentChunk( NULL ),
+    adaptationLogic( NULL ),
+    logicType( type ),
+    mpdManager( NULL ),
+    mpd( mpd )
 {
-    this->conManager        = conManager;
-    this->node              = node;
-    this->logicType         = type;
-    this->mpdManager        = mpd::MPDManagerFactory::create(this->node);
+    this->mpdManager        = mpd::MPDManagerFactory::create( mpd );
     this->adaptationLogic   = AdaptationLogicFactory::create( this->logicType, this->mpdManager );
-    this->currentChunk      = NULL;
-
     this->conManager->attach(this->adaptationLogic);
 }
 DASHManager::~DASHManager   ()

modules/stream_filter/dash/DASHManager.h

@@ -32,13 +32,15 @@
 #include "mpd/IMPDManager.h"
 #include "mpd/MPDManagerFactory.h"
 #include "exceptions/EOFException.h"
+#include "mpd/MPD.h"
 
 namespace dash
 {
     class DASHManager
     {
         public:
-            DASHManager             (http::HTTPConnectionManager *conManager, xml::Node *node, logic::IAdaptationLogic::LogicType type);
+            DASHManager( http::HTTPConnectionManager *conManager, mpd::MPD *mpd,
+                         logic::IAdaptationLogic::LogicType type );
             virtual ~DASHManager    ();
 
             int read        (void *p_buffer, size_t len);
@@ -50,8 +52,8 @@ namespace dash
             http::Chunk                         *currentChunk;
             logic::IAdaptationLogic             *adaptationLogic;
             logic::IAdaptationLogic::LogicType  logicType;
-            xml::Node                           *node;
             mpd::IMPDManager                    *mpdManager;
+            mpd::MPD                            *mpd;
     };
 }
 

modules/stream_filter/dash/dash.cpp

@@ -38,6 +38,7 @@
 #include "xml/DOMParser.h"
 #include "http/HTTPConnectionManager.h"
 #include "adaptationlogic/IAdaptationLogic.h"
+#include "mpd/BasicCMParser.h"
 
 #define SEEK 0
 
@@ -63,7 +64,7 @@ struct stream_sys_t
 {
         dash::DASHManager                   *p_dashManager;
         dash::http::HTTPConnectionManager   *p_conManager;
-        dash::xml::Node                     *p_node;
+        dash::mpd::MPD                      *p_mpd;
         int                                 position;
         bool                                isLive;
 };
@@ -82,35 +83,40 @@ static int Open(vlc_object_t *p_obj)
     if(!dash::xml::DOMParser::isDash(p_stream->p_source))
         return VLC_EGENERIC;
 
-    dash::xml::DOMParser parser(p_stream->p_source);
-    if(!parser.parse())
+    //Build a XML tree
+    dash::xml::DOMParser        parser(p_stream->p_source);
+    if( !parser.parse() )
     {
-        msg_Dbg(p_stream, "could not parse mpd file");
+        msg_Dbg( p_stream, "Could not parse mpd file." );
+        return VLC_EGENERIC;
+    }
+    //Begin the actual MPD parsing:
+    dash::mpd::BasicCMParser    mpdParser( parser.getRootNode(), p_stream->p_source );
+    if ( mpdParser.parse() == false || mpdParser.getMPD() == NULL )
+    {
+        msg_Err( p_obj, "MPD file parsing failed." );
         return VLC_EGENERIC;
     }
 
-    stream_sys_t *p_sys = (stream_sys_t *) malloc(sizeof(stream_sys_t));
-
+    stream_sys_t        *p_sys = (stream_sys_t *) malloc(sizeof(stream_sys_t));
     if (unlikely(p_sys == NULL))
         return VLC_ENOMEM;
 
+    p_sys->p_mpd = mpdParser.getMPD();
     dash::http::HTTPConnectionManager *p_conManager =
-        new dash::http::HTTPConnectionManager(p_stream);
-    dash::xml::Node *p_node = parser.getRootNode();
+                              new dash::http::HTTPConnectionManager( p_stream );
     dash::DASHManager*p_dashManager =
-        new dash::DASHManager( p_conManager, p_node,
-                              dash::logic::IAdaptationLogic::RateBased );
+            new dash::DASHManager( p_conManager, p_sys->p_mpd,
+                                   dash::logic::IAdaptationLogic::RateBased );
 
     if ( p_dashManager->getMpdManager()->getMPD() == NULL )
     {
-        msg_Err( p_obj, "MPD file parsing failed." );
         delete p_conManager;
         delete p_dashManager;
         free( p_sys );
         return VLC_EGENERIC;
     }
     p_sys->p_dashManager    = p_dashManager;
-    p_sys->p_node           = p_node;
     p_sys->p_conManager     = p_conManager;
     p_sys->position         = 0;
     p_sys->isLive           = p_dashManager->getMpdManager()->getMPD()->isLive();

modules/stream_filter/dash/mpd/BasicCMParser.cpp

@@ -32,13 +32,19 @@
 #include <sstream>
 
 #include <vlc_common.h>
+#include <vlc_stream.h>
 #include <vlc_strings.h>
 
 using namespace dash::mpd;
 using namespace dash::xml;
 
-BasicCMParser::BasicCMParser    (Node *root) : root(root), mpd(NULL)
+BasicCMParser::BasicCMParser( Node *root, stream_t *p_stream ) :
+    root( root ),
+    mpd( NULL )
 {
+    this->url = p_stream->psz_access;
+    this->url += "://";
+    this->url += p_stream->psz_path;
 }
 
 BasicCMParser::~BasicCMParser   ()

modules/stream_filter/dash/mpd/BasicCMParser.h

@@ -36,6 +36,8 @@
 #include "mpd/SegmentInfo.h"
 #include "mpd/Segment.h"
 
+struct stream_t;
+
 namespace dash
 {
     namespace mpd
@@ -43,8 +45,8 @@ namespace dash
         class BasicCMParser : public IMPDParser
         {
             public:
-                BasicCMParser           (dash::xml::Node *root);
-                virtual ~BasicCMParser  ();
+                BasicCMParser( dash::xml::Node *root, stream_t *p_stream );
+                virtual ~BasicCMParser();
 
                 bool    parse  ();
                 MPD*    getMPD ();
@@ -53,9 +55,6 @@ namespace dash
                 void    handleDependencyId( Representation* rep, const Group* group, const std::string& dependencyId );
 
             private:
-                dash::xml::Node *root;
-                MPD             *mpd;
-
                 bool    setMPD              ();
                 void    setPeriods          (dash::xml::Node *root);
                 void    setGroups           (dash::xml::Node *root, Period *period);
@@ -73,6 +72,11 @@ namespace dash
                                                        CommonAttributesElements *parent ) const;
                 bool    parseSegment( Segment *seg, const std::map<std::string, std::string> &attr );
                 ProgramInformation*     parseProgramInformation();
+
+            private:
+                dash::xml::Node *root;
+                MPD             *mpd;
+                std::string     url;
         };
     }
 }

modules/stream_filter/dash/mpd/MPDManagerFactory.cpp

@@ -28,21 +28,14 @@
 #include "mpd/MPDManagerFactory.h"
 
 using namespace dash::mpd;
-using namespace dash::xml;
 
-IMPDManager* MPDManagerFactory::create( Node *root )
+IMPDManager* MPDManagerFactory::create( MPD *mpd )
 {
-    BasicCMParser parser(root);
-
-    if ( parser.parse() == false )
-        return NULL;
-
-    Profile profile = parser.getMPD()->getProfile();
-    switch( profile )
+    switch( mpd->getProfile() )
     {
         case mpd::BasicCM:
         case mpd::Full2011:
-            return new BasicCMManager( parser.getMPD() );
+            return new BasicCMManager( mpd );
         case mpd::Basic:
         case mpd::UnknownProfile:
         default:

modules/stream_filter/dash/mpd/MPDManagerFactory.h

@@ -27,8 +27,6 @@
 
 #include "mpd/IMPDManager.h"
 #include "mpd/BasicCMManager.h"
-#include "mpd/BasicCMParser.h"
-#include "xml/Node.h"
 
 namespace dash
 {
@@ -37,7 +35,7 @@ namespace dash
         class MPDManagerFactory
         {
             public:
-                static IMPDManager* create( xml::Node *root );
+                static IMPDManager* create( MPD *mpd );
         };
     }
 }