/* bootstrap the structures for xml_parse() to be able to get started */
XmlNode* xml_load(const char * filename)
{
struct XMLBUF xml;
XmlNode *ret = NULL;
// printf("xml_load(\"%s\");\n", filename);
xml.error = 0;
xml.eof = 0;
xml.read_index = 0;
xml.fptr = fopen(filename, "rb");
if(!xml.fptr)
return NULL;
xml.buf = malloc(BUFFER+1);
if(!xml.buf)
goto xml_load_fail_malloc_buf;
xml.buf[BUFFER]=0;
xml.len = BUFFER;
xml_read_file(&xml);
ret = xml_parse(&xml);
if(xml.error)
{
xml_free(ret);
ret = NULL;
}
free(xml.buf);
xml_load_fail_malloc_buf:
fclose(xml.fptr);
return ret;
}
static void scene_init(int width, int height)
{
options.scene = new Scene(options.scene_params, options.session_params.device);
xml_read_file(options.scene, options.filepath.c_str());
if (width == 0 || height == 0) {
options.width = options.scene->camera->width;
options.height = options.scene->camera->height;
}
}
static void scene_init(int width, int height)
{
printf("scene_init.\n");
options.scene = new Scene(options.scene_params);
xml_read_file(options.scene, options.filepath.c_str());
if (width == 0 || height == 0) {
options.width = options.scene->camera->width;
options.height = options.scene->camera->height;
}
}
/*** read a byte and advance the offset */
static char xml_read_byte(XMLBUF *xml)
{
char ret = xml_peek(xml);
xml->read_index++;
if(xml->read_index >= xml->len)
{
if(xml->eof)
{
xml->read_index = xml->len;
return ret;
}
xml->read_index = 0 ;
xml_read_file(xml);
}
return ret;
}
/*
* char* xml_feed(x, test)
*
* Reads as many contiguous chars that pass test() into a newly allocated
* string.
*
* Instead of calling xml_read_byte and flogging realloc() for each byte,
* it checks the buffer itself.
*/
static char* xml_feed( XMLBUF *xml, int (*test)(char) )
{
int offset = xml->read_index;
int delta;
char *ret = NULL;
char *tmp = NULL;
int size = 0;
/* perform first and N middle realloc()'s */
while( test(xml->buf[offset]) )
{
offset ++;
if(offset >= xml->len)
{
delta = offset - xml->read_index;
tmp = realloc(ret, size + delta + 1);
if(!tmp)goto xml_feed_malloc;
ret = tmp;
memcpy(ret+size, xml->buf + xml->read_index, delta);
size += delta;
ret[size]=0;
if(xml->eof)return ret;
xml_read_file(xml);
xml->read_index = 0;
offset = 0;
}
}
/* perform final realloc() if needed */
if(offset > xml->read_index)
{
delta = offset - xml->read_index;
tmp = realloc(ret, size + delta + 1);
if(!tmp)goto xml_feed_malloc;
ret = tmp;
memcpy(ret+size, xml->buf + xml->read_index, delta);
xml->read_index = offset;
size += delta;
ret[size]=0;
}
return ret;
xml_feed_malloc:
free(ret);
xml_end_file(xml);
return 0;
}
static void scene_init()
{
options.scene = new Scene(options.scene_params, options.session_params.device);
/* Read XML */
xml_read_file(options.scene, options.filepath.c_str());
/* Camera width/height override? */
if(!(options.width == 0 || options.height == 0)) {
options.scene->camera->width = options.width;
options.scene->camera->height = options.height;
}
else {
options.width = options.scene->camera->width;
options.height = options.scene->camera->height;
}
/* Calculate Viewplane */
options.scene->camera->compute_auto_viewplane();
}
