GF_Err gf_isom_datamap_new(const char *location, const char *parentPath, u8 mode, GF_DataMap **outDataMap)
{
Bool extern_file;
char *sPath;
*outDataMap = NULL;
//if nothing specified, this is a MEMORY data map
if (!location) {
//not supported yet
return GF_NOT_SUPPORTED;
}
//we need a temp file ...
if (!strcmp(location, "mp4_tmp_edit")) {
#ifndef GPAC_DISABLE_ISOM_WRITE
*outDataMap = gf_isom_fdm_new_temp(parentPath);
if (! (*outDataMap)) return GF_IO_ERR;
return GF_OK;
#else
return GF_NOT_SUPPORTED;
#endif
}
extern_file = !gf_url_is_local(location);
if (mode == GF_ISOM_DATA_MAP_EDIT) {
//we need a local file for edition!!!
if (extern_file) return GF_ISOM_INVALID_MODE;
//OK, switch back to READ mode
mode = GF_ISOM_DATA_MAP_READ;
}
//TEMP: however, only support for file right now (we'd have to add some callback functions at some point)
if (extern_file) return GF_NOT_SUPPORTED;
sPath = gf_url_get_absolute_path(location, parentPath);
if (sPath == NULL) return GF_URL_ERROR;
if (mode == GF_ISOM_DATA_MAP_READ_ONLY) {
mode = GF_ISOM_DATA_MAP_READ;
/*It seems win32 file mapping is reported in prog mem usage -> large increases of occupancy. Should not be a pb
but unless you want mapping, only regular IO will be used...*/
#if 0
if (IsLargeFile(sPath)) {
*outDataMap = gf_isom_fdm_new(sPath, mode);
} else {
*outDataMap = gf_isom_fmo_new(sPath, mode);
}
#else
*outDataMap = gf_isom_fdm_new(sPath, mode);
#endif
} else {
*outDataMap = gf_isom_fdm_new(sPath, mode);
}
gf_free(sPath);
if (! (*outDataMap)) return GF_URL_ERROR;
return GF_OK;
}
GF_DataMap *gf_isom_fmo_new(const char *sPath, u8 mode) { return gf_isom_fdm_new(sPath, mode); }
