public override void Parse(BoxInfo bi, HDSBinaryReader br)
{
base.Parse(bi, br);
uint sizes = br.ReadByte();
bool longIdFields = ((sizes & AFRA_MASK_LONG_ID) > 0);
bool longOffsetFields = ((sizes & AFRA_MASK_LONG_OFFSET) > 0);
bool globalEntries = ((sizes & AFRA_MASK_GLOBAL_ENTRIES) > 0);
timeScale = br.ReadUInt32();
localRandomAccessEntries.Clear();
uint entryCount = br.ReadUInt32();
for (uint i = 0; i < entryCount; i++)
{
LocalRandomAccessEntry lrae = new LocalRandomAccessEntry();
lrae.Parse(br, longOffsetFields);
localRandomAccessEntries.Add(lrae);
}
globalRandomAccessEntries.Clear();
if (globalEntries)
{
entryCount = br.ReadUInt32();
for (int i = 0; i < entryCount; i++)
{
GlobalRandomAccessEntry grae = new GlobalRandomAccessEntry();
grae.Parse(br, longIdFields, longOffsetFields);
globalRandomAccessEntries.Add(grae);
}
}
}
/// <summary>
/// Given a seekTime, return the offset of the key frame that is nearest from the
/// left. This is done among localRandomAccessEntries only.
/// </summary>
public LocalRandomAccessEntry findNearestKeyFrameOffset(uint seekToTime)
{
int i = localRandomAccessEntries.Count - 1;
while (i >= 0)
{
LocalRandomAccessEntry entry = localRandomAccessEntries[i];
if (entry.time <= seekToTime)
{
return(entry);
}
i--;
}
return(null);
}
