2020-07-31 17:12:26 +00:00
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use std::io::{Seek, Read, Write};
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2020-07-28 16:36:17 +00:00
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use byteorder::{BigEndian, ReadBytesExt, WriteBytesExt};
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use crate::*;
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2020-07-31 17:12:26 +00:00
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use crate::atoms::*;
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2020-07-28 16:36:17 +00:00
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2020-07-29 04:29:04 +00:00
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#[derive(Debug, Default, PartialEq)]
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2020-07-28 16:36:17 +00:00
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pub struct VmhdBox {
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pub version: u8,
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pub flags: u32,
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pub graphics_mode: u16,
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pub op_color: RgbColor,
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}
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2020-07-29 04:29:04 +00:00
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#[derive(Debug, Default, PartialEq)]
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2020-07-28 16:36:17 +00:00
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pub struct RgbColor {
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pub red: u16,
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pub green: u16,
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pub blue: u16,
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}
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impl Mp4Box for VmhdBox {
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2020-07-31 17:12:26 +00:00
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fn box_type() -> BoxType {
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2020-07-28 16:36:17 +00:00
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BoxType::VmhdBox
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}
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fn box_size(&self) -> u64 {
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HEADER_SIZE + HEADER_EXT_SIZE + 8
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}
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}
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2020-07-31 17:12:26 +00:00
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impl<R: Read + Seek> ReadBox<&mut R> for VmhdBox {
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fn read_box(reader: &mut R, size: u64) -> Result<Self> {
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let start = get_box_start(reader)?;
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2020-07-28 16:36:17 +00:00
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let (version, flags) = read_box_header_ext(reader)?;
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let graphics_mode = reader.read_u16::<BigEndian>()?;
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let op_color = RgbColor {
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red: reader.read_u16::<BigEndian>()?,
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green: reader.read_u16::<BigEndian>()?,
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blue: reader.read_u16::<BigEndian>()?,
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};
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2020-07-31 17:12:26 +00:00
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skip_read_to(reader, start + size)?;
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2020-07-28 16:36:17 +00:00
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Ok(VmhdBox {
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version,
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flags,
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graphics_mode,
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op_color,
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})
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}
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}
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2020-07-31 17:12:26 +00:00
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impl<W: Write> WriteBox<&mut W> for VmhdBox {
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fn write_box(&self, writer: &mut W) -> Result<u64> {
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2020-07-28 16:36:17 +00:00
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let size = self.box_size();
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2020-07-31 17:12:26 +00:00
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BoxHeader::new(Self::box_type(), size).write(writer)?;
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2020-07-28 16:36:17 +00:00
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write_box_header_ext(writer, self.version, self.flags)?;
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writer.write_u16::<BigEndian>(self.graphics_mode)?;
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writer.write_u16::<BigEndian>(self.op_color.red)?;
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writer.write_u16::<BigEndian>(self.op_color.green)?;
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writer.write_u16::<BigEndian>(self.op_color.blue)?;
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Ok(size)
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}
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}
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2020-07-29 04:29:04 +00:00
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#[cfg(test)]
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mod tests {
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use super::*;
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2020-07-31 17:12:26 +00:00
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use crate::atoms::BoxHeader;
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2020-07-29 04:29:04 +00:00
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use std::io::Cursor;
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#[test]
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fn test_vmhd() {
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let src_box = VmhdBox {
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version: 0,
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flags: 1,
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graphics_mode: 0,
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op_color: RgbColor { red: 0, green: 0, blue: 0},
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};
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let mut buf = Vec::new();
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2020-07-31 17:12:26 +00:00
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src_box.write_box(&mut buf).unwrap();
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2020-07-29 04:29:04 +00:00
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assert_eq!(buf.len(), src_box.box_size() as usize);
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2020-07-31 17:12:26 +00:00
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let mut reader = Cursor::new(&buf);
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let header = BoxHeader::read(&mut reader).unwrap();
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assert_eq!(header.name, BoxType::VmhdBox);
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assert_eq!(src_box.box_size(), header.size);
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2020-07-29 04:29:04 +00:00
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2020-07-31 17:12:26 +00:00
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let dst_box = VmhdBox::read_box(&mut reader, header.size).unwrap();
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assert_eq!(src_box, dst_box);
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2020-07-29 04:29:04 +00:00
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}
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}
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