WEBVTT_INTERN webvtt_status
webvtt_create_bytearray_nt( const webvtt_byte *text, webvtt_uint32 alloc, webvtt_bytearray *pba )
{
webvtt_uint n = 0;
webvtt_status status;
webvtt_bytearray s;
webvtt_byte b;
if( !pba )
{
return WEBVTT_INVALID_PARAM;
}
s = (webvtt_bytearray)webvtt_alloc0( sizeof(struct webvtt_bytearray_t) + (alloc*sizeof(webvtt_byte)) );
if( !s )
{
return WEBVTT_OUT_OF_MEMORY;
}
s->alloc = alloc;
s->length = 0;
s->text = s->array;
s->text[0] = 0;
while( (alloc--) && (b = text[n++]) )
{
if( WEBVTT_FAILED( status = webvtt_bytearray_putc( &s, b ) ) )
{
webvtt_delete_bytearray( &s );
return status;
}
}
*pba = s;
return WEBVTT_SUCCESS;
}
WEBVTT_INTERN webvtt_status
webvtt_create_internal_node( webvtt_node **node, webvtt_node *parent, webvtt_node_kind kind,
webvtt_stringlist *css_classes, webvtt_string *annotation )
{
webvtt_status status;
webvtt_internal_node_data *node_data;
if( WEBVTT_FAILED( status = webvtt_create_node( node, kind, parent ) ) ) {
return status;
}
if ( !( node_data = (webvtt_internal_node_data *)webvtt_alloc0( sizeof(*node_data) ) ) )
{
return WEBVTT_OUT_OF_MEMORY;
}
webvtt_copy_stringlist( &node_data->css_classes, css_classes );
webvtt_copy_string( &node_data->annotation, annotation );
node_data->children = NULL;
node_data->length = 0;
node_data->alloc = 0;
(*node)->data.internal_data = node_data;
return WEBVTT_SUCCESS;
}
WEBVTT_INTERN webvtt_status
webvtt_attach_node( webvtt_node *parent, webvtt_node *to_attach )
{
webvtt_node **next = 0;
webvtt_internal_node_data *nd = 0;
if( !parent || !to_attach || !parent->data.internal_data ) {
return WEBVTT_INVALID_PARAM;
}
nd = parent->data.internal_data;
if( nd->alloc == 0 ) {
next = (webvtt_node **)webvtt_alloc0( sizeof( webvtt_node * ) * 8 );
if( !next ) {
return WEBVTT_OUT_OF_MEMORY;
}
nd->children = next;
nd->alloc = 8;
}
if( nd->length + 1 >= ( nd->alloc / 3 ) * 2 ) {
next = (webvtt_node **)webvtt_alloc0( sizeof( *next ) * nd->alloc * 2 );
if( !next ) {
return WEBVTT_OUT_OF_MEMORY;
}
nd->alloc *= 2;
memcpy( next, nd->children, nd->length * sizeof( webvtt_node * ) );
webvtt_free( nd->children );
nd->children = next;
}
nd->children[ nd->length++ ] = to_attach;
webvtt_ref_node( to_attach );
return WEBVTT_SUCCESS;
}
WEBVTT_INTERN webvtt_status
webvtt_create_token( webvtt_cuetext_token **token, webvtt_token_type token_type )
{
webvtt_cuetext_token *temp_token = (webvtt_cuetext_token *)webvtt_alloc0( sizeof(*temp_token) );
if( !temp_token ) {
return WEBVTT_OUT_OF_MEMORY;
}
temp_token->token_type = token_type;
*token = temp_token;
return WEBVTT_SUCCESS;
}
WEBVTT_INTERN webvtt_status
webvtt_create_node( webvtt_node **node, webvtt_node_kind kind, webvtt_node *parent )
{
webvtt_node *temp_node;
if( !node ) {
return WEBVTT_INVALID_PARAM;
}
if( !( temp_node = (webvtt_node *)webvtt_alloc0(sizeof(*temp_node)) ) )
{
return WEBVTT_OUT_OF_MEMORY;
}
webvtt_ref_node( temp_node );
temp_node->kind = kind;
temp_node->parent = parent;
*node = temp_node;
return WEBVTT_SUCCESS;
}
WEBVTT_EXPORT webvtt_status
webvtt_create_cue( webvtt_cue **pcue )
{
webvtt_cue *cue;
if( !pcue ) {
return WEBVTT_INVALID_PARAM;
}
cue = (webvtt_cue *)webvtt_alloc0( sizeof(*cue) );
if( !cue ) {
return WEBVTT_OUT_OF_MEMORY;
}
/**
* From http://dev.w3.org/html5/webvtt/#parsing (10/25/2012)
*
* Let cue's text track cue snap-to-lines flag be true.
*
* Let cue's text track cue line position be auto.
*
* Let cue's text track cue text position be 50.
*
* Let cue's text track cue size be 100.
*
* Let cue's text track cue alignment be middle alignment.
*/
webvtt_ref( &cue->refs );
webvtt_init_string( &cue->id );
webvtt_init_string( &cue->body );
cue->from = 0xFFFFFFFFFFFFFFFF;
cue->until = 0xFFFFFFFFFFFFFFFF;
cue->snap_to_lines = 1;
cue->settings.position = 50;
cue->settings.size = 100;
cue->settings.align = WEBVTT_ALIGN_MIDDLE;
cue->settings.line = WEBVTT_AUTO;
cue->settings.vertical = WEBVTT_HORIZONTAL;
*pcue = cue;
return WEBVTT_SUCCESS;
}