diff options
Diffstat (limited to 'src/H5P.c')
| -rw-r--r-- | src/H5P.c | 33 |
1 files changed, 29 insertions, 4 deletions
@@ -1859,6 +1859,10 @@ H5Pget_preserve (hid_t plist_id) * specific compression initialization functions like * H5Pset_deflate(). * + * The FLAGS, CD_SIZE, and CLIENT_DATA are copied to the + * property list and eventually to the file and passed to the + * compression functions. + * * Return: Success: SUCCEED * * Failure: FAIL @@ -1871,7 +1875,8 @@ H5Pget_preserve (hid_t plist_id) *------------------------------------------------------------------------- */ herr_t -H5Pset_compression (hid_t plist_id, H5Z_method_t method) +H5Pset_compression (hid_t plist_id, H5Z_method_t method, unsigned int flags, + size_t cd_size, const void *client_data) { H5D_create_t *plist = NULL; @@ -1891,7 +1896,12 @@ H5Pset_compression (hid_t plist_id, H5Z_method_t method) /* Clear any previous compression method info, then set new value */ H5O_reset (H5O_COMPRESS, &(plist->compress)); plist->compress.method = method; - + plist->compress.flags = flags; + plist->compress.cd_size = cd_size; + if (cd_size) { + plist->compress.client_data = H5MM_xmalloc (cd_size); + HDmemcpy (plist->compress.client_data, client_data, cd_size); + } FUNC_LEAVE (SUCCEED); } @@ -1900,7 +1910,11 @@ H5Pset_compression (hid_t plist_id, H5Z_method_t method) * Function: H5Pget_compression * * Purpose: Gets the compression method information from a dataset - * creation property list. + * creation property list. The CLIENT_DATA buffer is initially + * CD_SIZE bytes. On return, CLIENT_DATA will be initialized + * with at most that many bytes, and CD_SIZE will contain the + * actual size of the client data, which might be larger than + * its original value. * * Return: Success: Compression method. * @@ -1914,7 +1928,8 @@ H5Pset_compression (hid_t plist_id, H5Z_method_t method) *------------------------------------------------------------------------- */ H5Z_method_t -H5Pget_compression (hid_t plist_id) +H5Pget_compression (hid_t plist_id, unsigned int *flags/*out*/, + size_t *cd_size/*in,out*/, void *client_data/*out*/) { H5D_create_t *plist = NULL; @@ -1927,6 +1942,16 @@ H5Pget_compression (hid_t plist_id) "not a dataset creation property list"); } + /* Output values */ + if (flags) *flags = plist->compress.flags; + if (cd_size) { + if (*cd_size>0 && client_data) { + HDmemcpy (client_data, plist->compress.client_data, + MIN(plist->compress.cd_size, *cd_size)); + } + *cd_size = plist->compress.cd_size; + } + FUNC_LEAVE (plist->compress.method); } |