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codec: ttml: add namespaces registry

This commit is contained in:
François Cartegnie 2024-02-25 16:46:35 +01:00 committed by Felix Paul Kühne
parent d9a8494f70
commit 29759b7141
2 changed files with 101 additions and 0 deletions
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86
modules/codec/ttml/ttml.c
View File

@ -65,6 +65,92 @@ vlc_module_begin ()
#endif
vlc_module_end ()
struct tt_namespace_s
{
char *psz_prefix;
char *psz_uri;
struct vlc_list links;
};
void tt_namespaces_Clean( tt_namespaces_t *nss )
{
struct tt_namespace_s *ns;
vlc_list_foreach( ns, &nss->nodes, links )
{
free( ns->psz_prefix );
free( ns->psz_uri );
free( ns );
}
}
void tt_namespaces_Init( tt_namespaces_t *nss )
{
vlc_list_init( &nss->nodes );
}
const char * tt_namespaces_GetURI( const tt_namespaces_t *nss,
const char *psz_qn )
{
const struct tt_namespace_s *ns;
vlc_list_foreach_const( ns, &nss->nodes, links )
{
/* compares prefixed name against raw prefix */
for( size_t i=0; ; i++ )
{
if( ns->psz_prefix[i] == psz_qn[i] )
{
if( psz_qn[i] == '\0' )
return ns->psz_uri;
}
else
{
if( ns->psz_prefix[i] == '\0' && psz_qn[i] == ':' )
return ns->psz_uri;
else
break;
}
}
}
return NULL;
}
const char * tt_namespaces_GetPrefix( const tt_namespaces_t *nss,
const char *psz_uri )
{
const struct tt_namespace_s *ns;
vlc_list_foreach_const( ns, &nss->nodes, links )
{
if( !strcmp( ns->psz_uri, psz_uri ) )
return ns->psz_prefix;
}
return NULL;
}
void tt_namespaces_Register( tt_namespaces_t *nss, const char *psz_prefix,
const char *psz_uri )
{
if( tt_namespaces_GetPrefix( nss, psz_uri ) )
return;
struct tt_namespace_s *ns = malloc(sizeof(*ns));
if( ns )
{
const char *sep = strchr( psz_prefix, ':' );
if( sep )
ns->psz_prefix = strndup( psz_prefix, sep - psz_prefix );
else
ns->psz_prefix = strdup("");
ns->psz_uri = strdup( psz_uri );
if( !ns->psz_prefix || !ns->psz_uri )
{
free( ns->psz_prefix );
free( ns->psz_uri );
free( ns );
return;
}
vlc_list_append( &ns->links, &nss->nodes );
}
}
static const char * tt_node_InheritNS( const tt_node_t *p_node )
{
for( ; p_node ; p_node = p_node->p_parent )

15
modules/codec/ttml/ttml.h
View File

@ -21,6 +21,7 @@
#include <vlc_tick.h>
#include <vlc_arrays.h>
#include <vlc_memstream.h>
#include <vlc_list.h>
int tt_OpenDemux( vlc_object_t* p_this );
void tt_CloseDemux( vlc_object_t* p_demux );
@ -68,6 +69,20 @@ struct tt_searchkey
#define TT_NS_FEATURE TT_NS "/feature/"
#define TT_NS_EXTENSION TT_NS "/extension/"
typedef struct
{
struct vlc_list nodes;
} tt_namespaces_t;
void tt_namespaces_Init( tt_namespaces_t *nss );
void tt_namespaces_Clean( tt_namespaces_t *nss );
void tt_namespaces_Register( tt_namespaces_t *nss, const char *psz_prefix,
const char *psz_uri );
const char * tt_namespaces_GetURI( const tt_namespaces_t *nss,
const char *psz_qn ); /* qn or prefix */
const char * tt_namespaces_GetPrefix( const tt_namespaces_t *nss,
const char *psz_uri );
enum
{
TT_NODE_TYPE_ELEMENT,