1 files changed, 46 insertions, 0 deletions
diff --git a/src/boxes/stts.rs b/src/boxes/stts.rs
new file mode 100644
index 0000000..b956a52
--- /dev/null
+++ b/src/boxes/stts.rs
@@ -0,0 +1,46 @@
+use byteorder::{BigEndian, WriteBytesExt};
+use four_cc::FourCC;
+
+use bytes::{BufMut, BytesMut};
+
+use crate::Mp4BoxError;
+use crate::{FullBoxHeader, Mp4Box};
+
+use std::mem::size_of;
+
+pub struct TimeToSampleEntry {
+    count: u32,
+    delta: u32,
+}
+
+pub struct TimeToSampleBox {
+    pub entries: Vec<TimeToSampleEntry>,
+}
+
+impl Mp4Box for TimeToSampleBox {
+    const NAME: FourCC = FourCC(*b"stts");
+
+    fn get_full_box_header(&self) -> Option<FullBoxHeader> {
+        Some(FullBoxHeader::new(0, 0))
+    }
+
+    fn content_size(&self) -> u64 {
+        size_of::<u32>() as u64
+            + (size_of::<u32>() as u64 + size_of::<u32>() as u64) * self.entries.len() as u64
+    }
+
+    fn write_box_contents(&self, writer: &mut BytesMut) -> Result<(), Mp4BoxError> {
+        let mut v = Vec::new();
+
+        v.write_u32::<BigEndian>(self.entries.len() as _)?;
+
+        for entry in &self.entries {
+            v.write_u32::<BigEndian>(entry.count)?;
+            v.write_u32::<BigEndian>(entry.delta)?;
+        }
+
+        writer.put_slice(&v);
+
+        Ok(())
+    }
+}