mirror of
https://github.com/alfg/mp4-rust.git
synced 2024-05-30 05:28:05 +00:00
c26bdcab59
* fix "mdat size too large" * fix clippy * Fix clippy::derive-partial-eq-without-eq
133 lines
3.7 KiB
Rust
133 lines
3.7 KiB
Rust
use crate::mp4box::*;
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use crate::Mp4Box;
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use serde::Serialize;
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#[derive(Debug, Clone, PartialEq, Eq, Default, Serialize)]
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pub struct VpccBox {
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pub version: u8,
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pub flags: u32,
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pub profile: u8,
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pub level: u8,
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pub bit_depth: u8,
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pub chroma_subsampling: u8,
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pub video_full_range_flag: bool,
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pub color_primaries: u8,
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pub transfer_characteristics: u8,
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pub matrix_coefficients: u8,
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pub codec_initialization_data_size: u16,
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}
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impl VpccBox {
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pub const DEFAULT_VERSION: u8 = 1;
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pub const DEFAULT_BIT_DEPTH: u8 = 8;
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}
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impl Mp4Box for VpccBox {
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fn box_type(&self) -> BoxType {
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BoxType::VpccBox
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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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fn to_json(&self) -> Result<String> {
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Ok(serde_json::to_string(&self).unwrap())
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}
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fn summary(&self) -> Result<String> {
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Ok(format!("{:?}", self))
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}
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}
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impl<R: Read + Seek> ReadBox<&mut R> for VpccBox {
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fn read_box(reader: &mut R, size: u64) -> Result<Self> {
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let start = box_start(reader)?;
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let (version, flags) = read_box_header_ext(reader)?;
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let profile: u8 = reader.read_u8()?;
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let level: u8 = reader.read_u8()?;
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let (bit_depth, chroma_subsampling, video_full_range_flag) = {
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let b = reader.read_u8()?;
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(b >> 4, b << 4 >> 5, b & 0x01 == 1)
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};
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let transfer_characteristics: u8 = reader.read_u8()?;
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let matrix_coefficients: u8 = reader.read_u8()?;
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let codec_initialization_data_size: u16 = reader.read_u16::<BigEndian>()?;
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skip_bytes_to(reader, start + size)?;
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Ok(Self {
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version,
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flags,
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profile,
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level,
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bit_depth,
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chroma_subsampling,
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video_full_range_flag,
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color_primaries: 0,
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transfer_characteristics,
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matrix_coefficients,
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codec_initialization_data_size,
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})
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}
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}
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impl<W: Write> WriteBox<&mut W> for VpccBox {
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fn write_box(&self, writer: &mut W) -> Result<u64> {
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let size = self.box_size();
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BoxHeader::new(self.box_type(), size).write(writer)?;
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write_box_header_ext(writer, self.version, self.flags)?;
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writer.write_u8(self.profile)?;
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writer.write_u8(self.level)?;
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writer.write_u8(
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(self.bit_depth << 4)
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| (self.chroma_subsampling << 1)
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| (self.video_full_range_flag as u8),
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)?;
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writer.write_u8(self.color_primaries)?;
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writer.write_u8(self.transfer_characteristics)?;
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writer.write_u8(self.matrix_coefficients)?;
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writer.write_u16::<BigEndian>(self.codec_initialization_data_size)?;
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Ok(size)
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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use crate::mp4box::BoxHeader;
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use std::io::Cursor;
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#[test]
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fn test_vpcc() {
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let src_box = VpccBox {
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version: VpccBox::DEFAULT_VERSION,
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flags: 0,
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profile: 0,
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level: 0x1F,
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bit_depth: VpccBox::DEFAULT_BIT_DEPTH,
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chroma_subsampling: 0,
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video_full_range_flag: false,
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color_primaries: 0,
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transfer_characteristics: 0,
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matrix_coefficients: 0,
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codec_initialization_data_size: 0,
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};
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let mut buf = Vec::new();
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src_box.write_box(&mut buf).unwrap();
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assert_eq!(buf.len(), src_box.box_size() as usize);
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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::VpccBox);
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assert_eq!(src_box.box_size(), header.size);
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let dst_box = VpccBox::read_box(&mut reader, header.size).unwrap();
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assert_eq!(src_box, dst_box);
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}
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}
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