mirror of
https://github.com/alfg/mp4-rust.git
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121 lines
2.9 KiB
Rust
121 lines
2.9 KiB
Rust
use serde::Serialize;
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use std::io::{Read, Seek, Write};
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use crate::mp4box::*;
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#[derive(Debug, Clone, PartialEq, Eq, Default, Serialize)]
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pub struct SinfBox {
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pub frma: FrmaBox,
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pub schm: Option<SchmBox>,
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pub schi: Option<SchiBox>,
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}
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impl SinfBox {
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pub fn get_type(&self) -> BoxType {
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BoxType::SinfBox
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}
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pub fn get_size(&self) -> u64 {
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let mut size = HEADER_SIZE + self.frma.get_size();
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if let Some(ref schm) = self.schm {
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size += schm.get_size();
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}
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if let Some(ref schi) = self.schi {
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size += schi.get_size();
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}
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size
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}
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}
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impl Mp4Box for SinfBox {
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fn box_type(&self) -> BoxType {
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self.get_type()
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}
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fn box_size(&self) -> u64 {
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self.get_size()
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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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let s = String::new();
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Ok(s)
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}
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}
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impl<R: Read + Seek> ReadBox<&mut R> for SinfBox {
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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 mut frma = None;
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let mut schm = None;
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let mut schi = None;
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let mut current = reader.stream_position()?;
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let end = start + size;
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while current < end {
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// Get box header.
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let header = BoxHeader::read(reader)?;
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let BoxHeader { name, size: s } = header;
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if s > size {
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return Err(Error::InvalidData(
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"sinf box contains a box with a larger size than it",
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));
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}
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match name {
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BoxType::FrmaBox => {
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frma = Some(FrmaBox::read_box(reader, s)?);
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}
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BoxType::SchmBox => {
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schm = Some(SchmBox::read_box(reader, s)?);
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}
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BoxType::SchiBox => {
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schi = Some(SchiBox::read_box(reader, s)?);
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}
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_ => {
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// XXX warn!()
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skip_box(reader, s)?;
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}
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}
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current = reader.stream_position()?;
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}
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if frma.is_none() {
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return Err(Error::BoxNotFound(BoxType::FrmaBox));
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}
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skip_bytes_to(reader, start + size)?;
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Ok(SinfBox {
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frma: frma.unwrap(),
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schm,
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schi,
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})
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}
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}
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impl<W: Write> WriteBox<&mut W> for SinfBox {
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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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self.frma.write_box(writer)?;
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if let Some(schm) = &self.schm {
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schm.write_box(writer)?;
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}
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if let Some(schi) = &self.schi {
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schi.write_box(writer)?;
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}
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Ok(size)
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}
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}
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