void
v_dataViewSampleRemove(
v_dataViewSample sample)
{
v_dataViewInstance instance;
assert(C_TYPECHECK(sample,v_dataViewSample));
instance = v_dataViewInstance(v_readerSample(sample)->instance);
CHECK_INSTANCE(instance);
if (instance->sampleCount > 1) {
if (sample->next != NULL) {
v_dataViewSample(sample->next)->prev = sample->prev;
} else {
v_dataViewInstanceTemplate(instance)->sample = sample->prev;
}
if (sample->prev != NULL) {
v_dataViewSample(sample->prev)->next = sample->next;
}
sample->prev = NULL;
sample->next = NULL;
c_free(sample);
}
instance->sampleCount--;
if (instance->sampleCount > 0) {
CHECK_INSTANCE(instance);
} else {
CHECK_ZERO_INSTANCE(instance);
}
}
v_dataViewSample
v_dataViewSampleNew(
v_dataViewInstance instance,
v_readerSample masterSample)
{
v_dataView dataView;
v_dataViewSample sample;
assert(instance != NULL);
assert(masterSample != NULL);
assert(C_TYPECHECK(masterSample,v_readerSample));
dataView = v_dataView(instance->dataView);
#ifdef _EXTENT_
sample = v_dataViewSample(c_extentCreate(dataView->sampleExtent));
#else
sample = v_dataViewSample(c_new(dataView->sampleType));
#endif
if (sample) {
v_readerSample(sample)->instance = (c_voidp)instance;
v_readerSample(sample)->sampleState = 0;
v_dataViewSampleList(sample)->next = NULL;
v_dataViewSampleList(sample)->prev = NULL;
sample->prev = NULL;
v_dataViewSampleTemplate(sample)->sample = c_keep(masterSample);
} else {
OS_REPORT(OS_ERROR,
"v_dataViewSampleNew",0,
"Failed to allocate v_dataViewSample.");
}
return sample;
}
void
v_dataViewInstanceWrite(
v_dataViewInstance instance,
v_dataViewSample sample,
v_dataViewSample position)
{
v_dataViewSample head, *sampleptr;
assert (instance != NULL && C_TYPECHECK (instance, v_dataViewInstance));
assert (sample != NULL && C_TYPECHECK (sample, v_dataViewSample));
if (position != NULL) {
assert (C_TYPECHECK (position, v_dataViewSample));
}
head = v_dataViewInstanceTemplate(instance)->sample;
/* Keep alive view sample must be discarded, but only after the new
* view sample is inserted.
*/
if (instance->sampleCount == 0) {
assert (position == NULL);
assert(head == NULL);
sampleptr = &v_dataViewInstanceTemplate(instance)->sample;
sample->next = sample;
sample->prev = NULL;
(*sampleptr) = sample;
} else if (position == NULL) {
assert(head);
/* "normal" use case, append sample to list */
sampleptr = (v_dataViewSample *)&head->next;
sample->next = (*sampleptr);
sample->prev = NULL;
(*sampleptr)->prev = sample;
(*sampleptr) = sample;
} else {
assert (position->next != NULL);
assert(head);
sample->next = position->next;
if (position == head) {
sampleptr = &v_dataViewInstanceTemplate(instance)->sample;
/* verify previous pointer of tail sample is correct */
assert (v_dataViewSample(head->next)->prev == NULL);
(*sampleptr)->next = sample;
} else {
sampleptr = (v_dataViewSample *)&position->next;
(*sampleptr)->prev = sample;
}
sample->prev = position;
(*sampleptr) = sample;
}
instance->sampleCount++;
}
void
v_dataReaderSampleEmptyViews(
v_dataReaderSample sample)
{
v_dataViewSampleList viewSample;
assert(sample != NULL);
assert(C_TYPECHECK(sample, v_dataReaderSample));
viewSample = v_readerSample(sample)->viewSamples;
while (viewSample != NULL) {
v_dataViewSampleListRemove(viewSample);
v_dataViewSampleRemove(v_dataViewSample(viewSample));
viewSample = v_readerSample(sample)->viewSamples;
}
}
void
v_dataReaderSampleWipeViews(
v_dataReaderSample sample)
{
v_dataViewSampleList viewSample;
v_dataViewInstance instance;
assert(sample != NULL);
assert(C_TYPECHECK(sample, v_dataReaderSample));
viewSample = v_readerSample(sample)->viewSamples;
while (viewSample != NULL) {
instance = v_readerSample(viewSample)->instance;
v_dataViewSampleListRemove(viewSample);
v_dataViewSampleRemove(v_dataViewSample(viewSample));
v_dataViewInstanceRemove(instance);
viewSample = v_readerSample(sample)->viewSamples;
}
}
