int ST_SetKey( ST_TIFF *st, int tag, int count, int st_type, void *data )
{
int i, item_size = ST_TypeSize( st_type );
/* -------------------------------------------------------------------- */
/* If we already have a value for this tag, replace it. */
/* -------------------------------------------------------------------- */
for( i = 0; i < st->key_count; i++ )
{
if( st->key_list[i].tag == tag )
{
free( st->key_list[i].data );
st->key_list[i].count = count;
st->key_list[i].type = st_type;
st->key_list[i].data = malloc(item_size*count);
memcpy( st->key_list[i].data, data, count * item_size );
return 1;
}
}
/* -------------------------------------------------------------------- */
/* Otherwise, add a new entry. */
/* -------------------------------------------------------------------- */
st->key_count++;
st->key_list = (ST_KEY *) realloc(st->key_list,
sizeof(ST_KEY) * st->key_count);
st->key_list[st->key_count-1].tag = tag;
st->key_list[st->key_count-1].count = count;
st->key_list[st->key_count-1].type = st_type;
st->key_list[st->key_count-1].data = malloc(item_size * count);
memcpy( st->key_list[st->key_count-1].data, data, item_size * count );
return 1;
}
int ST_SetKey( ST_TIFF *st, int tag, int count, int st_type, void *data )
{
int i, item_size = ST_TypeSize( st_type );
/* -------------------------------------------------------------------- */
/* We should compute the length if we were not given a count */
/* -------------------------------------------------------------------- */
if (count == 0 && st_type == STT_ASCII )
{
count = (int)strlen((char*)data)+1;
}
/* -------------------------------------------------------------------- */
/* If we already have a value for this tag, replace it. */
/* -------------------------------------------------------------------- */
for( i = 0; i < st->key_count; i++ )
{
if( st->key_list[i].tag == tag )
{
free( st->key_list[i].data );
st->key_list[i].count = count;
st->key_list[i].type = st_type;
/* +1 to make clang static analyzer not warn about potential malloc(0) */
st->key_list[i].data = malloc(item_size*count+1);
memcpy( st->key_list[i].data, data, count * item_size );
return 1;
}
}
/* -------------------------------------------------------------------- */
/* Otherwise, add a new entry. */
/* -------------------------------------------------------------------- */
st->key_count++;
st->key_list = (ST_KEY *) realloc(st->key_list,
sizeof(ST_KEY) * st->key_count);
st->key_list[st->key_count-1].tag = tag;
st->key_list[st->key_count-1].count = count;
st->key_list[st->key_count-1].type = st_type;
/* +1 to make clang static analyzer not warn about potential malloc(0) */
st->key_list[st->key_count-1].data = malloc(item_size * count+1);
memcpy( st->key_list[st->key_count-1].data, data, item_size * count );
return 1;
}
/* returns the value of TIFF tag <tag>, or if
* the value is an array, returns an allocated buffer
* containing the values. Allocate a copy of the actual
* buffer, sized up for updating.
*/
static int _GTIFGetField (tiff_t *tif, pinfo_t tag, int *count, void *val )
{
int item_size, data_type;
void *internal_value, *ret_value;
if( !ST_GetKey( (ST_TIFF*) tif, (int) tag, count, &data_type,
&internal_value ) )
return 0;
if( data_type != ST_TagType( tag ) )
return 0;
item_size = ST_TypeSize( data_type );
ret_value = (char *)_GTIFcalloc( *count * item_size );
if (!ret_value) return 0;
_TIFFmemcpy( ret_value, internal_value, item_size * *count );
*(void **)val = ret_value;
return 1;
}
