1 files changed, 45 insertions, 0 deletions
diff --git a/src/boxes/traf.rs b/src/boxes/traf.rs
new file mode 100644
index 0000000..42dbea2
--- /dev/null
+++ b/src/boxes/traf.rs
@@ -0,0 +1,45 @@
+use four_cc::FourCC;
+
+use bytes::BytesMut;
+
+use crate::{Mp4Box, Mp4BoxError};
+
+use super::{TrackFragmentBaseMediaDecodeTimeBox, TrackFragmentHeaderBox, TrackFragmentRunBox};
+
+pub struct TrackFragmentBox {
+    pub tfhd: TrackFragmentHeaderBox,
+    pub track_runs: Vec<TrackFragmentRunBox>,
+    pub base_media_decode_time: Option<TrackFragmentBaseMediaDecodeTimeBox>,
+}
+
+impl Mp4Box for TrackFragmentBox {
+    const NAME: FourCC = FourCC(*b"traf");
+
+    fn content_size(&self) -> u64 {
+        let mut size = self.tfhd.size();
+
+        for trun in &self.track_runs {
+            size += trun.size();
+        }
+
+        if let Some(base_media_decode_time) = &self.base_media_decode_time {
+            size += base_media_decode_time.size();
+        }
+
+        size
+    }
+
+    fn write_box_contents(&self, writer: &mut BytesMut) -> Result<(), Mp4BoxError> {
+        self.tfhd.write(writer)?;
+
+        if let Some(base_media_decode_time) = &self.base_media_decode_time {
+            base_media_decode_time.write(writer)?;
+        }
+
+        for run in &self.track_runs {
+            run.write(writer)?;
+        }
+
+        Ok(())
+    }
+}