From 9e6e4962f2346a3fbd96ab3e6c331858ef6ec0d1 Mon Sep 17 00:00:00 2001
From: Felix Kaaman <tmtu@tmtu.ee>
Date: Thu, 7 Jan 2021 20:32:49 +0100
Subject: Initial commit

---
 src/boxes/mdhd.rs | 48 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)
 create mode 100644 src/boxes/mdhd.rs

(limited to 'src/boxes/mdhd.rs')

diff --git a/src/boxes/mdhd.rs b/src/boxes/mdhd.rs
new file mode 100644
index 0000000..5befd67
--- /dev/null
+++ b/src/boxes/mdhd.rs
@@ -0,0 +1,48 @@
+use byteorder::{BigEndian, ByteOrder};
+use four_cc::FourCC;
+
+use bytes::{BufMut, BytesMut};
+
+use crate::Mp4BoxError;
+use crate::{FullBoxHeader, Mp4Box};
+
+use std::mem::size_of;
+
+pub struct MediaHeaderBox {
+    pub creation_time: u64,
+    pub modification_time: u64,
+    pub timescale: u32,
+    pub duration: u64,
+}
+
+impl Mp4Box for MediaHeaderBox {
+    const NAME: FourCC = FourCC(*b"mdhd");
+
+    fn get_full_box_header(&self) -> Option<FullBoxHeader> {
+        Some(FullBoxHeader::new(1, 0))
+    }
+
+    fn content_size(&self) -> u64 {
+        size_of::<u64>() as u64 + // creation_time
+        size_of::<u64>() as u64 + // modification_time
+        size_of::<u32>() as u64 + // timescale
+        size_of::<u64>() as u64 + // duration
+        size_of::<u16>() as u64 + // language
+        size_of::<u16>() as u64 // pre_defined
+    }
+
+    fn write_box_contents(&self, writer: &mut BytesMut) -> Result<(), Mp4BoxError> {
+        let mut contents = [0u8; 32];
+
+        BigEndian::write_u64(&mut contents[..], self.creation_time);
+        BigEndian::write_u64(&mut contents[8..], self.modification_time);
+        BigEndian::write_u32(&mut contents[16..], self.timescale);
+        BigEndian::write_u64(&mut contents[20..], self.duration);
+
+        BigEndian::write_u16(&mut contents[28..], 0); // language
+
+        writer.put_slice(&contents);
+
+        Ok(())
+    }
+}
-- 
cgit v1.2.3-70-g09d2