void mxf_update_partitions_in_memory(MXFFilePartitions *partitions)
{
MXFPartition *previousPartition;
MXFPartition *lastPartition;
MXFListIterator iter;
int haveFooter;
/* check if anything there to update */
if (mxf_get_list_length(partitions) == 0)
{
return;
}
/* update partition packs with previousPartition and footerPartition (if present) offsets */
lastPartition = (MXFPartition*)mxf_get_last_list_element(partitions);
haveFooter = mxf_is_footer_partition_pack(&lastPartition->key);
previousPartition = NULL;
mxf_initialise_list_iter(&iter, partitions);
while (mxf_next_list_iter_element(&iter))
{
MXFPartition *partition = (MXFPartition*)mxf_get_iter_element(&iter);
if (previousPartition != NULL)
{
partition->previousPartition = previousPartition->thisPartition;
}
if (haveFooter)
{
partition->footerPartition = lastPartition->thisPartition;
}
previousPartition = partition;
}
}
void* mxf_get_list_element(MXFList* list, long index)
{
long currentIndex = 0;
MXFListElement* element = list->elements;
if (index < 0 || index > list->len - 1)
{
return NULL;
}
if (index == 0)
{
return mxf_get_first_list_element(list);
}
if (index == list->len - 1)
{
return mxf_get_last_list_element(list);
}
while (currentIndex != index && element != NULL)
{
currentIndex++;
element = element->next;
}
if (currentIndex != index || element == NULL)
{
return NULL;
}
return element->data;
}
int archive_mxf_read_footer_metadata(const char* filename, MXFDataModel* dataModel, MXFHeaderMetadata** headerMetadata)
{
MXFPageFile* mxfPageFile = NULL;
MXFFile* mxfFile = NULL;
MXFRIP rip;
MXFRIPEntry* lastRIPEntry = NULL;
mxfKey key;
uint8_t llen;
uint64_t len;
MXFPartition* footerPartition = NULL;
int result = 0;
MXFHeaderMetadata* newHeaderMetadata = NULL;
memset(&rip, 0, sizeof(rip));
/* open MXF file */
if (strstr(filename, "%d") != NULL)
{
CHK_OFAIL_NOMSG(mxf_page_file_open_read(filename, &mxfPageFile));
mxfFile = mxf_page_file_get_file(mxfPageFile);
}
else
{
CHK_OFAIL_NOMSG(mxf_disk_file_open_read(filename, &mxfFile));
}
/* read the RIP */
CHK_OFAIL_NOMSG(mxf_read_rip(mxfFile, &rip));
/* read footer partition pack */
CHK_OFAIL_NOMSG((lastRIPEntry = (MXFRIPEntry*)mxf_get_last_list_element(&rip.entries)) != NULL);
CHK_OFAIL_NOMSG(mxf_file_seek(mxfFile, mxf_get_runin_len(mxfFile) + lastRIPEntry->thisPartition, SEEK_SET));
CHK_OFAIL_NOMSG(mxf_read_kl(mxfFile, &key, &llen, &len));
CHK_OFAIL_NOMSG(mxf_is_partition_pack(&key));
result = 2; /* the file is complete and the presence, or not, of the header metadata will not change */
*headerMetadata = NULL;
CHK_OFAIL_NOMSG(mxf_is_footer_partition_pack(&key));
CHK_OFAIL_NOMSG(mxf_read_partition(mxfFile, &key, &footerPartition));
/* read the header metadata */
CHK_OFAIL_NOMSG(mxf_read_next_nonfiller_kl(mxfFile, &key, &llen, &len));
CHK_OFAIL_NOMSG(mxf_is_header_metadata(&key));
CHK_OFAIL_NOMSG(mxf_create_header_metadata(&newHeaderMetadata, dataModel));
CHK_OFAIL_NOMSG(mxf_read_header_metadata(mxfFile, newHeaderMetadata,
footerPartition->headerByteCount, &key, llen, len));
mxf_free_partition(&footerPartition);
mxf_clear_rip(&rip);
mxf_file_close(&mxfFile);
*headerMetadata = newHeaderMetadata;
newHeaderMetadata = NULL;
return 1;
fail:
mxf_free_header_metadata(&newHeaderMetadata);
mxf_free_partition(&footerPartition);
mxf_clear_rip(&rip);
mxf_file_close(&mxfFile);
return result;
}
int add_timecode_to_index(TimecodeIndex* index, ArchiveTimecode* timecode)
{
TimecodeIndexArray* newArray = NULL;
TimecodeIndexArray* lastArray;
int64_t timecodePos = timecode_to_position(timecode);
if (mxf_get_list_length(&index->indexArrays) == 0)
{
CHK_MALLOC_OFAIL(newArray, TimecodeIndexArray);
CHK_MALLOC_ARRAY_OFAIL(newArray->elements, TimecodeIndexElement, index->arraySize);
newArray->numElements = 0;
CHK_OFAIL(mxf_append_list_element(&index->indexArrays, newArray));
newArray = NULL; /* list has ownership */
}
lastArray = (TimecodeIndexArray*)mxf_get_last_list_element(&index->indexArrays);
if (lastArray->numElements != 0)
{
if (lastArray->elements[lastArray->numElements - 1].timecodePos +
lastArray->elements[lastArray->numElements - 1].duration == timecodePos)
{
/* timecode is previous + 1 */
lastArray->elements[lastArray->numElements - 1].duration++;
}
else if (lastArray->elements[lastArray->numElements - 1].timecodePos == timecodePos &&
(lastArray->elements[lastArray->numElements - 1].frozen ||
lastArray->elements[lastArray->numElements - 1].duration == 1))
{
/* timecode is frozen with the previous timecode value */
lastArray->elements[lastArray->numElements - 1].frozen = 1;
lastArray->elements[lastArray->numElements - 1].duration++;
}
else
{
/* timecode is not frozen or previous + 1 */
if (lastArray->numElements == index->arraySize)
{
CHK_MALLOC_OFAIL(newArray, TimecodeIndexArray);
CHK_MALLOC_ARRAY_OFAIL(newArray->elements, TimecodeIndexElement, index->arraySize);
newArray->numElements = 0;
CHK_OFAIL(mxf_append_list_element(&index->indexArrays, newArray));
newArray = NULL; /* list has ownership */
lastArray = (TimecodeIndexArray*)mxf_get_last_list_element(&index->indexArrays);
}
lastArray->numElements++;
lastArray->elements[lastArray->numElements - 1].frozen = 0;
lastArray->elements[lastArray->numElements - 1].timecodePos = timecodePos;
lastArray->elements[lastArray->numElements - 1].duration = 1;
}
}
else
{
lastArray->numElements++;
lastArray->elements[lastArray->numElements - 1].frozen = 0;
lastArray->elements[lastArray->numElements - 1].timecodePos = timecodePos;
lastArray->elements[lastArray->numElements - 1].duration = 1;
}
return 1;
fail:
free_index_array(&newArray);
return 0;
}
