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Add ReadBox trait (#7)
This commit is contained in:
Ian Jun
GitHub
parent
e637fb761e
commit
85a65ea596
2 changed files with 411 additions and 379 deletions
784
src/atoms.rs
784
src/atoms.rs
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@ -1,6 +1,5 @@
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use std::fmt;
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use std::io::{BufReader, SeekFrom, Seek, Read};
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use std::fs::File;
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use byteorder::{BigEndian, ReadBytesExt};
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use std::char::{decode_utf16, REPLACEMENT_CHARACTER};
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use crate::{Error, read_box_header, BoxHeader, HEADER_SIZE};
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@ -151,6 +150,10 @@ impl fmt::Display for FourCC {
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}
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}
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pub trait ReadBox<T>: Sized {
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fn read_box(_: T, offset: u64, size: u32) -> Result<Self>;
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}
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#[derive(Debug, Default)]
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pub struct FtypBox {
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pub major_brand: FourCC,
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@ -329,268 +332,285 @@ pub struct StsdBox {
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pub flags: u32,
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}
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pub fn parse_ftyp_box(f: &mut BufReader<File>, _offset: u64, size: u32) -> Result<FtypBox> {
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let major = f.read_u32::<BigEndian>().unwrap();
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let minor = f.read_u32::<BigEndian>().unwrap();
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if size % 4 != 0 {
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return Err(Error::InvalidData("invalid ftyp size"));
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}
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let brand_count = (size - 16) / 4; // header + major + minor
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let mut brands = Vec::new();
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for _ in 0..brand_count {
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let b = f.read_u32::<BigEndian>().unwrap();
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brands.push(From::from(b));
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}
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Ok(FtypBox {
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major_brand: From::from(major),
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minor_version: minor,
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compatible_brands: brands,
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})
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}
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pub(crate) fn parse_moov_box(f: &mut BufReader<File>, _offset: u64, size: u32) -> Result<MoovBox> {
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let mut moov = MoovBox::new();
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let mut start = 0u64;
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while start < size as u64 {
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// Get box header.
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let header = read_box_header(f, start).unwrap();
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let BoxHeader{ name, size: s, offset: _ } = header;
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match name {
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BoxType::MvhdBox => {
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moov.mvhd = parse_mvhd_box(f, 0, s as u32).unwrap();
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}
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BoxType::TrakBox => {
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let trak = parse_trak_box(f, 0, s as u32).unwrap();
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moov.traks.push(trak);
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}
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BoxType::UdtaBox => {
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start = (s as u32 - HEADER_SIZE) as u64;
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}
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_ => break
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impl<R: Read + Seek> ReadBox<&mut BufReader<R>> for FtypBox {
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fn read_box(reader: &mut BufReader<R>, _offset: u64, size: u32) -> Result<Self> {
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let major = reader.read_u32::<BigEndian>().unwrap();
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let minor = reader.read_u32::<BigEndian>().unwrap();
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if size % 4 != 0 {
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return Err(Error::InvalidData("invalid ftyp size"));
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}
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}
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Ok(moov)
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}
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let brand_count = (size - 16) / 4; // header + major + minor
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fn parse_mvhd_box(f: &mut BufReader<File>, _offset: u64, size: u32) -> Result<MvhdBox> {
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let current = f.seek(SeekFrom::Current(0)).unwrap(); // Current cursor position.
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let version = f.read_u8().unwrap();
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let flags_a = f.read_u8().unwrap();
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let flags_b = f.read_u8().unwrap();
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let flags_c = f.read_u8().unwrap();
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let flags = u32::from(flags_a) << 16 | u32::from(flags_b) << 8 | u32::from(flags_c);
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let creation_time = f.read_u32::<BigEndian>().unwrap();
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let modification_time = f.read_u32::<BigEndian>().unwrap();
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let timescale = f.read_u32::<BigEndian>().unwrap();
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let duration = f.read_u32::<BigEndian>().unwrap();
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let rate = f.read_u32::<BigEndian>().unwrap();
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skip(f, current, size);
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Ok(MvhdBox{
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version,
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flags,
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creation_time,
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modification_time,
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timescale,
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duration,
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rate,
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})
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}
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fn parse_trak_box(f: &mut BufReader<File>, _offset: u64, size: u32) -> Result<TrakBox> {
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let current = f.seek(SeekFrom::Current(0)).unwrap(); // Current cursor position.
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let mut trak = TrakBox::new();
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let start = 0u64;
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while start < size as u64 {
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// Get box header.
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let header = read_box_header(f, start).unwrap();
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let BoxHeader{ name, size: s, offset: _ } = header;
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match name {
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BoxType::TkhdBox => {
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let tkhd = parse_tkhd_box(f, 0, s as u32).unwrap();
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trak.tkhd = Some(tkhd);
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}
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BoxType::EdtsBox => {
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let edts = parse_edts_box(f, 0, s as u32).unwrap();
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trak.edts = Some(edts);
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}
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BoxType::MdiaBox => {
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let mdia = parse_mdia_box(f, 0, s as u32).unwrap();
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trak.mdia = Some(mdia);
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}
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_ => break
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let mut brands = Vec::new();
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for _ in 0..brand_count {
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let b = reader.read_u32::<BigEndian>().unwrap();
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brands.push(From::from(b));
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}
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Ok(FtypBox {
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major_brand: From::from(major),
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minor_version: minor,
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compatible_brands: brands,
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})
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}
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skip(f, current, size);
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Ok(trak)
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}
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impl<R: Read + Seek> ReadBox<&mut BufReader<R>> for MoovBox {
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fn read_box(reader: &mut BufReader<R>, _offset: u64, size: u32) -> Result<Self> {
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let mut moov = MoovBox::new();
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fn parse_tkhd_box(f: &mut BufReader<File>, _offset: u64, size: u32) -> Result<TkhdBox> {
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let current = f.seek(SeekFrom::Current(0)).unwrap(); // Current cursor position.
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let mut start = 0u64;
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while start < size as u64 {
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let version = f.read_u8().unwrap();
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let flags_a = f.read_u8().unwrap();
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let flags_b = f.read_u8().unwrap();
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let flags_c = f.read_u8().unwrap();
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let flags = u32::from(flags_a) << 16 | u32::from(flags_b) << 8 | u32::from(flags_c);
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let creation_time = f.read_u32::<BigEndian>().unwrap();
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let modification_time = f.read_u32::<BigEndian>().unwrap();
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let track_id = f.read_u32::<BigEndian>().unwrap();
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let duration = f.read_u64::<BigEndian>().unwrap();
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f.read_u64::<BigEndian>().unwrap(); // skip.
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let layer = f.read_u16::<BigEndian>().unwrap();
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let alternate_group = f.read_u16::<BigEndian>().unwrap();
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let volume = f.read_u16::<BigEndian>().unwrap() >> 8;
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// Get box header.
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let header = read_box_header(reader, start).unwrap();
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let BoxHeader{ name, size: s, offset: _ } = header;
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f.read_u8().unwrap(); // skip.
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let matrix = Matrix{
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a: f.read_i32::<byteorder::LittleEndian>().unwrap(),
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b: f.read_i32::<BigEndian>().unwrap(),
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u: f.read_i32::<BigEndian>().unwrap(),
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c: f.read_i32::<BigEndian>().unwrap(),
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d: f.read_i32::<BigEndian>().unwrap(),
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v: f.read_i32::<BigEndian>().unwrap(),
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x: f.read_i32::<BigEndian>().unwrap(),
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y: f.read_i32::<BigEndian>().unwrap(),
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w: f.read_i32::<BigEndian>().unwrap(),
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};
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let width = f.read_u32::<BigEndian>().unwrap() >> 8;
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let height = f.read_u32::<BigEndian>().unwrap() >> 8;
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skip(f, current, size);
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Ok(TkhdBox {
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version,
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flags,
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creation_time,
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modification_time,
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track_id,
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duration,
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layer,
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alternate_group,
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volume,
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matrix,
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width,
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height,
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})
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}
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fn parse_edts_box(f: &mut BufReader<File>, _offset: u64, size: u32) -> Result<EdtsBox> {
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let current = f.seek(SeekFrom::Current(0)).unwrap(); // Current cursor position.
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let mut edts = EdtsBox::new();
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let start = 0u64;
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while start < size as u64 {
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// Get box header.
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let header = read_box_header(f, start).unwrap();
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let BoxHeader{ name, size: s, offset: _ } = header;
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match name {
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BoxType::ElstBox => {
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let elst = parse_elst_box(f, 0, s as u32).unwrap();
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edts.elst = Some(elst);
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match name {
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BoxType::MvhdBox => {
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moov.mvhd = MvhdBox::read_box(reader, 0, s as u32).unwrap();
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}
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BoxType::TrakBox => {
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let trak = TrakBox::read_box(reader, 0, s as u32).unwrap();
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moov.traks.push(trak);
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}
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BoxType::UdtaBox => {
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start = (s as u32 - HEADER_SIZE) as u64;
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}
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_ => break
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}
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_ => break
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}
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Ok(moov)
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}
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skip(f, current, size);
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Ok(edts)
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}
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fn parse_elst_box(f: &mut BufReader<File>, _offset: u64, size: u32) -> Result<ElstBox> {
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let current = f.seek(SeekFrom::Current(0)).unwrap(); // Current cursor position.
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impl<R: Read + Seek> ReadBox<&mut BufReader<R>> for MvhdBox {
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fn read_box(reader: &mut BufReader<R>, _offset: u64, size: u32) -> Result<Self> {
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let current = reader.seek(SeekFrom::Current(0)).unwrap(); // Current cursor position.
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let version = f.read_u32::<BigEndian>().unwrap();
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let entry_count = f.read_u32::<BigEndian>().unwrap();
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let version = reader.read_u8().unwrap();
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let flags_a = reader.read_u8().unwrap();
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let flags_b = reader.read_u8().unwrap();
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let flags_c = reader.read_u8().unwrap();
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let flags = u32::from(flags_a) << 16 | u32::from(flags_b) << 8 | u32::from(flags_c);
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let creation_time = reader.read_u32::<BigEndian>().unwrap();
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let modification_time = reader.read_u32::<BigEndian>().unwrap();
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let timescale = reader.read_u32::<BigEndian>().unwrap();
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let duration = reader.read_u32::<BigEndian>().unwrap();
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let rate = reader.read_u32::<BigEndian>().unwrap();
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skip(reader, current, size);
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let mut entries = Vec::new();
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Ok(MvhdBox{
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version,
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flags,
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creation_time,
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modification_time,
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timescale,
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duration,
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rate,
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})
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}
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}
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for _i in 0..entry_count {
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let entry = ElstEntry{
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segment_duration: f.read_u32::<BigEndian>().unwrap(),
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media_time: f.read_u32::<BigEndian>().unwrap(),
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media_rate: f.read_u16::<BigEndian>().unwrap(),
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media_rate_fraction: f.read_u16::<BigEndian>().unwrap(),
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impl<R: Read + Seek> ReadBox<&mut BufReader<R>> for TrakBox {
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fn read_box(reader: &mut BufReader<R>, _offset: u64, size: u32) -> Result<Self> {
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let current = reader.seek(SeekFrom::Current(0)).unwrap(); // Current cursor position.
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let mut trak = TrakBox::new();
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let start = 0u64;
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while start < size as u64 {
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// Get box header.
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let header = read_box_header(reader, start).unwrap();
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let BoxHeader{ name, size: s, offset: _ } = header;
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match name {
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BoxType::TkhdBox => {
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let tkhd = TkhdBox::read_box(reader, 0, s as u32).unwrap();
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trak.tkhd = Some(tkhd);
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}
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BoxType::EdtsBox => {
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let edts = EdtsBox::read_box(reader, 0, s as u32).unwrap();
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trak.edts = Some(edts);
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}
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BoxType::MdiaBox => {
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let mdia = MdiaBox::read_box(reader, 0, s as u32).unwrap();
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trak.mdia = Some(mdia);
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}
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_ => break
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}
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}
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skip(reader, current, size);
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Ok(trak)
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}
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}
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impl<R: Read + Seek> ReadBox<&mut BufReader<R>> for TkhdBox {
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fn read_box(reader: &mut BufReader<R>, _offset: u64, size: u32) -> Result<Self> {
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let current = reader.seek(SeekFrom::Current(0)).unwrap(); // Current cursor position.
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let version = reader.read_u8().unwrap();
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let flags_a = reader.read_u8().unwrap();
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let flags_b = reader.read_u8().unwrap();
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let flags_c = reader.read_u8().unwrap();
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let flags = u32::from(flags_a) << 16 | u32::from(flags_b) << 8 | u32::from(flags_c);
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let creation_time = reader.read_u32::<BigEndian>().unwrap();
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let modification_time = reader.read_u32::<BigEndian>().unwrap();
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let track_id = reader.read_u32::<BigEndian>().unwrap();
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let duration = reader.read_u64::<BigEndian>().unwrap();
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reader.read_u64::<BigEndian>().unwrap(); // skip.
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let layer = reader.read_u16::<BigEndian>().unwrap();
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let alternate_group = reader.read_u16::<BigEndian>().unwrap();
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let volume = reader.read_u16::<BigEndian>().unwrap() >> 8;
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reader.read_u8().unwrap(); // skip.
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let matrix = Matrix{
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a: reader.read_i32::<byteorder::LittleEndian>().unwrap(),
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b: reader.read_i32::<BigEndian>().unwrap(),
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u: reader.read_i32::<BigEndian>().unwrap(),
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c: reader.read_i32::<BigEndian>().unwrap(),
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d: reader.read_i32::<BigEndian>().unwrap(),
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v: reader.read_i32::<BigEndian>().unwrap(),
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x: reader.read_i32::<BigEndian>().unwrap(),
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y: reader.read_i32::<BigEndian>().unwrap(),
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w: reader.read_i32::<BigEndian>().unwrap(),
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};
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entries.push(entry);
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}
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skip(f, current, size);
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Ok(ElstBox {
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version,
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entry_count,
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entries,
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})
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let width = reader.read_u32::<BigEndian>().unwrap() >> 8;
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let height = reader.read_u32::<BigEndian>().unwrap() >> 8;
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skip(reader, current, size);
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Ok(TkhdBox {
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version,
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flags,
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creation_time,
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modification_time,
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track_id,
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duration,
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layer,
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alternate_group,
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volume,
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matrix,
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width,
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height,
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})
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}
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}
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fn parse_mdia_box(f: &mut BufReader<File>, _offset: u64, size: u32) -> Result<MdiaBox> {
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let current = f.seek(SeekFrom::Current(0)).unwrap(); // Current cursor position.
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let mut mdia = MdiaBox::new();
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impl<R: Read + Seek> ReadBox<&mut BufReader<R>> for EdtsBox {
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fn read_box(reader: &mut BufReader<R>, _offset: u64, size: u32) -> Result<Self> {
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let current = reader.seek(SeekFrom::Current(0)).unwrap(); // Current cursor position.
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let mut edts = EdtsBox::new();
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let start = 0u64;
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while start < size as u64 {
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// Get box header.
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let header = read_box_header(f, start).unwrap();
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let BoxHeader{ name, size: s, offset: _ } = header;
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let start = 0u64;
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while start < size as u64 {
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// Get box header.
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let header = read_box_header(reader, start).unwrap();
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let BoxHeader{ name, size: s, offset: _ } = header;
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match name {
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BoxType::MdhdBox => {
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let mdhd = parse_mdhd_box(f, 0, s as u32).unwrap();
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mdia.mdhd = Some(mdhd);
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match name {
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BoxType::ElstBox => {
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let elst = ElstBox::read_box(reader, 0, s as u32).unwrap();
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edts.elst = Some(elst);
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}
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_ => break
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}
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BoxType::HdlrBox => {
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let hdlr = parse_hdlr_box(f, 0, s as u32).unwrap();
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mdia.hdlr = Some(hdlr);
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}
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BoxType::MinfBox => {
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let minf = parse_minf_box(f, 0, s as u32).unwrap();
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mdia.minf = Some(minf);
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}
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_ => break
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}
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}
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skip(f, current, size);
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skip(reader, current, size);
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Ok(mdia)
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Ok(edts)
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}
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}
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|
||||
fn parse_mdhd_box(f: &mut BufReader<File>, _offset: u64, size: u32) -> Result<MdhdBox> {
|
||||
let current = f.seek(SeekFrom::Current(0)).unwrap(); // Current cursor position.
|
||||
impl<R: Read + Seek> ReadBox<&mut BufReader<R>> for ElstBox {
|
||||
fn read_box(reader: &mut BufReader<R>, _offset: u64, size: u32) -> Result<Self> {
|
||||
let current = reader.seek(SeekFrom::Current(0)).unwrap(); // Current cursor position.
|
||||
|
||||
let version = f.read_u8().unwrap();
|
||||
let flags_a = f.read_u8().unwrap();
|
||||
let flags_b = f.read_u8().unwrap();
|
||||
let flags_c = f.read_u8().unwrap();
|
||||
let flags = u32::from(flags_a) << 16 | u32::from(flags_b) << 8 | u32::from(flags_c);
|
||||
let creation_time = f.read_u32::<BigEndian>().unwrap();
|
||||
let modification_time = f.read_u32::<BigEndian>().unwrap();
|
||||
let timescale = f.read_u32::<BigEndian>().unwrap();
|
||||
let duration = f.read_u32::<BigEndian>().unwrap();
|
||||
let language = f.read_u16::<BigEndian>().unwrap();
|
||||
let language_string = get_language_string(language);
|
||||
skip(f, current, size);
|
||||
let version = reader.read_u32::<BigEndian>().unwrap();
|
||||
let entry_count = reader.read_u32::<BigEndian>().unwrap();
|
||||
|
||||
Ok(MdhdBox {
|
||||
version,
|
||||
flags,
|
||||
creation_time,
|
||||
modification_time,
|
||||
timescale,
|
||||
duration,
|
||||
language,
|
||||
language_string,
|
||||
})
|
||||
let mut entries = Vec::new();
|
||||
|
||||
for _i in 0..entry_count {
|
||||
let entry = ElstEntry{
|
||||
segment_duration: reader.read_u32::<BigEndian>().unwrap(),
|
||||
media_time: reader.read_u32::<BigEndian>().unwrap(),
|
||||
media_rate: reader.read_u16::<BigEndian>().unwrap(),
|
||||
media_rate_fraction: reader.read_u16::<BigEndian>().unwrap(),
|
||||
};
|
||||
entries.push(entry);
|
||||
}
|
||||
skip(reader, current, size);
|
||||
|
||||
Ok(ElstBox {
|
||||
version,
|
||||
entry_count,
|
||||
entries,
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
impl<R: Read + Seek> ReadBox<&mut BufReader<R>> for MdiaBox {
|
||||
fn read_box(reader: &mut BufReader<R>, _offset: u64, size: u32) -> Result<Self> {
|
||||
let current = reader.seek(SeekFrom::Current(0)).unwrap(); // Current cursor position.
|
||||
let mut mdia = MdiaBox::new();
|
||||
|
||||
let start = 0u64;
|
||||
while start < size as u64 {
|
||||
// Get box header.
|
||||
let header = read_box_header(reader, start).unwrap();
|
||||
let BoxHeader{ name, size: s, offset: _ } = header;
|
||||
|
||||
match name {
|
||||
BoxType::MdhdBox => {
|
||||
let mdhd = MdhdBox::read_box(reader, 0, s as u32).unwrap();
|
||||
mdia.mdhd = Some(mdhd);
|
||||
}
|
||||
BoxType::HdlrBox => {
|
||||
let hdlr = HdlrBox::read_box(reader, 0, s as u32).unwrap();
|
||||
mdia.hdlr = Some(hdlr);
|
||||
}
|
||||
BoxType::MinfBox => {
|
||||
let minf = MinfBox::read_box(reader, 0, s as u32).unwrap();
|
||||
mdia.minf = Some(minf);
|
||||
}
|
||||
_ => break
|
||||
}
|
||||
}
|
||||
skip(reader, current, size);
|
||||
|
||||
Ok(mdia)
|
||||
}
|
||||
}
|
||||
|
||||
impl<R: Read + Seek> ReadBox<&mut BufReader<R>> for MdhdBox {
|
||||
fn read_box(reader: &mut BufReader<R>, _offset: u64, size: u32) -> Result<Self> {
|
||||
let current = reader.seek(SeekFrom::Current(0)).unwrap(); // Current cursor position.
|
||||
|
||||
let version = reader.read_u8().unwrap();
|
||||
let flags_a = reader.read_u8().unwrap();
|
||||
let flags_b = reader.read_u8().unwrap();
|
||||
let flags_c = reader.read_u8().unwrap();
|
||||
let flags = u32::from(flags_a) << 16 | u32::from(flags_b) << 8 | u32::from(flags_c);
|
||||
let creation_time = reader.read_u32::<BigEndian>().unwrap();
|
||||
let modification_time = reader.read_u32::<BigEndian>().unwrap();
|
||||
let timescale = reader.read_u32::<BigEndian>().unwrap();
|
||||
let duration = reader.read_u32::<BigEndian>().unwrap();
|
||||
let language = reader.read_u16::<BigEndian>().unwrap();
|
||||
let language_string = get_language_string(language);
|
||||
skip(reader, current, size);
|
||||
|
||||
Ok(MdhdBox {
|
||||
version,
|
||||
flags,
|
||||
creation_time,
|
||||
modification_time,
|
||||
timescale,
|
||||
duration,
|
||||
language,
|
||||
language_string,
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
fn get_language_string(language: u16) -> String {
|
||||
|
|
@ -608,178 +628,190 @@ fn get_language_string(language: u16) -> String {
|
|||
return lang_str;
|
||||
}
|
||||
|
||||
fn parse_hdlr_box(f: &mut BufReader<File>, _offset: u64, size: u32) -> Result<HdlrBox> {
|
||||
let current = f.seek(SeekFrom::Current(0)).unwrap(); // Current cursor position.
|
||||
impl<R: Read + Seek> ReadBox<&mut BufReader<R>> for HdlrBox {
|
||||
fn read_box(reader: &mut BufReader<R>, _offset: u64, size: u32) -> Result<Self> {
|
||||
let current = reader.seek(SeekFrom::Current(0)).unwrap(); // Current cursor position.
|
||||
|
||||
let version = f.read_u8().unwrap();
|
||||
let flags_a = f.read_u8().unwrap();
|
||||
let flags_b = f.read_u8().unwrap();
|
||||
let flags_c = f.read_u8().unwrap();
|
||||
let flags = u32::from(flags_a) << 16 | u32::from(flags_b) << 8 | u32::from(flags_c);
|
||||
f.read_u32::<BigEndian>().unwrap(); // skip.
|
||||
let handler = f.read_u32::<BigEndian>().unwrap();
|
||||
let version = reader.read_u8().unwrap();
|
||||
let flags_a = reader.read_u8().unwrap();
|
||||
let flags_b = reader.read_u8().unwrap();
|
||||
let flags_c = reader.read_u8().unwrap();
|
||||
let flags = u32::from(flags_a) << 16 | u32::from(flags_b) << 8 | u32::from(flags_c);
|
||||
reader.read_u32::<BigEndian>().unwrap(); // skip.
|
||||
let handler = reader.read_u32::<BigEndian>().unwrap();
|
||||
|
||||
let n = f.seek(SeekFrom::Current(12)).unwrap(); // 12 bytes reserved.
|
||||
let buf_size = (size as u64 - (n - current)) - HEADER_SIZE as u64;
|
||||
let mut buf = vec![0u8; buf_size as usize];
|
||||
f.read_exact(&mut buf).unwrap();
|
||||
let n = reader.seek(SeekFrom::Current(12)).unwrap(); // 12 bytes reserved.
|
||||
let buf_size = (size as u64 - (n - current)) - HEADER_SIZE as u64;
|
||||
let mut buf = vec![0u8; buf_size as usize];
|
||||
reader.read_exact(&mut buf).unwrap();
|
||||
|
||||
let handler_string = match String::from_utf8(buf) {
|
||||
Ok(t) => t,
|
||||
_ => String::from("null"),
|
||||
};
|
||||
skip(f, current, size);
|
||||
let handler_string = match String::from_utf8(buf) {
|
||||
Ok(t) => t,
|
||||
_ => String::from("null"),
|
||||
};
|
||||
skip(reader, current, size);
|
||||
|
||||
Ok(HdlrBox {
|
||||
version,
|
||||
flags,
|
||||
handler_type: From::from(handler),
|
||||
name: handler_string,
|
||||
})
|
||||
Ok(HdlrBox {
|
||||
version,
|
||||
flags,
|
||||
handler_type: From::from(handler),
|
||||
name: handler_string,
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
fn parse_minf_box(f: &mut BufReader<File>, _offset: u64, size: u32) -> Result<MinfBox> {
|
||||
let current = f.seek(SeekFrom::Current(0)).unwrap(); // Current cursor position.
|
||||
let mut minf = MinfBox::new();
|
||||
impl<R: Read + Seek> ReadBox<&mut BufReader<R>> for MinfBox {
|
||||
fn read_box(reader: &mut BufReader<R>, _offset: u64, size: u32) -> Result<Self> {
|
||||
let current = reader.seek(SeekFrom::Current(0)).unwrap(); // Current cursor position.
|
||||
let mut minf = MinfBox::new();
|
||||
|
||||
let mut start = 0u64;
|
||||
while start < size as u64 {
|
||||
// Get box header.
|
||||
let header = read_box_header(f, start).unwrap();
|
||||
let BoxHeader{ name, size: s, offset: _ } = header;
|
||||
let mut start = 0u64;
|
||||
while start < size as u64 {
|
||||
// Get box header.
|
||||
let header = read_box_header(reader, start).unwrap();
|
||||
let BoxHeader{ name, size: s, offset: _ } = header;
|
||||
|
||||
match name {
|
||||
BoxType::VmhdBox => {
|
||||
let vmhd = parse_vmhd_box(f, 0, s as u32).unwrap();
|
||||
minf.vmhd = Some(vmhd);
|
||||
match name {
|
||||
BoxType::VmhdBox => {
|
||||
let vmhd = VmhdBox::read_box(reader, 0, s as u32).unwrap();
|
||||
minf.vmhd = Some(vmhd);
|
||||
}
|
||||
BoxType::SmhdBox => {
|
||||
start = (s as u32 - HEADER_SIZE) as u64;
|
||||
}
|
||||
BoxType::DinfBox => {
|
||||
start = (s as u32 - HEADER_SIZE) as u64;
|
||||
}
|
||||
BoxType::StblBox => {
|
||||
let stbl = StblBox::read_box(reader, 0, s as u32).unwrap();
|
||||
minf.stbl = Some(stbl);
|
||||
}
|
||||
_ => break
|
||||
}
|
||||
BoxType::SmhdBox => {
|
||||
start = (s as u32 - HEADER_SIZE) as u64;
|
||||
}
|
||||
BoxType::DinfBox => {
|
||||
start = (s as u32 - HEADER_SIZE) as u64;
|
||||
}
|
||||
BoxType::StblBox => {
|
||||
let stbl = parse_stbl_box(f, 0, s as u32).unwrap();
|
||||
minf.stbl = Some(stbl);
|
||||
}
|
||||
_ => break
|
||||
}
|
||||
skip(reader, current, size);
|
||||
|
||||
Ok(minf)
|
||||
}
|
||||
skip(f, current, size);
|
||||
|
||||
Ok(minf)
|
||||
}
|
||||
|
||||
fn parse_vmhd_box(f: &mut BufReader<File>, _offset: u64, size: u32) -> Result<VmhdBox> {
|
||||
let current = f.seek(SeekFrom::Current(0)).unwrap(); // Current cursor position.
|
||||
impl<R: Read + Seek> ReadBox<&mut BufReader<R>> for VmhdBox {
|
||||
fn read_box(reader: &mut BufReader<R>, _offset: u64, size: u32) -> Result<Self> {
|
||||
let current = reader.seek(SeekFrom::Current(0)).unwrap(); // Current cursor position.
|
||||
|
||||
let version = f.read_u8().unwrap();
|
||||
let flags_a = f.read_u8().unwrap();
|
||||
let flags_b = f.read_u8().unwrap();
|
||||
let flags_c = f.read_u8().unwrap();
|
||||
let flags = u32::from(flags_a) << 16 | u32::from(flags_b) << 8 | u32::from(flags_c);
|
||||
let graphics_mode = f.read_u16::<BigEndian>().unwrap();
|
||||
let op_color = f.read_u16::<BigEndian>().unwrap();
|
||||
skip(f, current, size);
|
||||
let version = reader.read_u8().unwrap();
|
||||
let flags_a = reader.read_u8().unwrap();
|
||||
let flags_b = reader.read_u8().unwrap();
|
||||
let flags_c = reader.read_u8().unwrap();
|
||||
let flags = u32::from(flags_a) << 16 | u32::from(flags_b) << 8 | u32::from(flags_c);
|
||||
let graphics_mode = reader.read_u16::<BigEndian>().unwrap();
|
||||
let op_color = reader.read_u16::<BigEndian>().unwrap();
|
||||
skip(reader, current, size);
|
||||
|
||||
Ok(VmhdBox {
|
||||
version,
|
||||
flags,
|
||||
graphics_mode,
|
||||
op_color,
|
||||
})
|
||||
Ok(VmhdBox {
|
||||
version,
|
||||
flags,
|
||||
graphics_mode,
|
||||
op_color,
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
fn parse_stbl_box(f: &mut BufReader<File>, _offset: u64, size: u32) -> Result<StblBox> {
|
||||
let mut stbl = StblBox::new();
|
||||
impl<R: Read + Seek> ReadBox<&mut BufReader<R>> for StblBox {
|
||||
fn read_box(reader: &mut BufReader<R>, _offset: u64, size: u32) -> Result<Self> {
|
||||
let mut stbl = StblBox::new();
|
||||
|
||||
let start = 0u64;
|
||||
while start < size as u64 {
|
||||
// Get box header.
|
||||
let header = read_box_header(f, start).unwrap();
|
||||
let BoxHeader{ name, size: s, offset: _ } = header;
|
||||
let start = 0u64;
|
||||
while start < size as u64 {
|
||||
// Get box header.
|
||||
let header = read_box_header(reader, start).unwrap();
|
||||
let BoxHeader{ name, size: s, offset: _ } = header;
|
||||
|
||||
match name {
|
||||
BoxType::StsdBox => {
|
||||
let stsd = parse_stsd_box(f, 0, s as u32).unwrap();
|
||||
stbl.stsd = Some(stsd);
|
||||
match name {
|
||||
BoxType::StsdBox => {
|
||||
let stsd = StsdBox::read_box(reader, 0, s as u32).unwrap();
|
||||
stbl.stsd = Some(stsd);
|
||||
}
|
||||
BoxType::SttsBox => {
|
||||
let stts = SttsBox::read_box(reader, 0, s as u32).unwrap();
|
||||
stbl.stts = Some(stts);
|
||||
}
|
||||
_ => break
|
||||
}
|
||||
BoxType::SttsBox => {
|
||||
let stts = parse_stts_box(f, 0, s as u32).unwrap();
|
||||
stbl.stts = Some(stts);
|
||||
}
|
||||
_ => break
|
||||
}
|
||||
Ok(stbl)
|
||||
}
|
||||
Ok(stbl)
|
||||
}
|
||||
|
||||
fn parse_stts_box(f: &mut BufReader<File>, _offset: u64, size: u32) -> Result<SttsBox> {
|
||||
let current = f.seek(SeekFrom::Current(0)).unwrap(); // Current cursor position.
|
||||
impl<R: Read + Seek> ReadBox<&mut BufReader<R>> for SttsBox {
|
||||
fn read_box(reader: &mut BufReader<R>, _offset: u64, size: u32) -> Result<Self> {
|
||||
let current = reader.seek(SeekFrom::Current(0)).unwrap(); // Current cursor position.
|
||||
|
||||
let version = f.read_u8().unwrap();
|
||||
let flags_a = f.read_u8().unwrap();
|
||||
let flags_b = f.read_u8().unwrap();
|
||||
let flags_c = f.read_u8().unwrap();
|
||||
let flags = u32::from(flags_a) << 16 | u32::from(flags_b) << 8 | u32::from(flags_c);
|
||||
let entry_count = f.read_u32::<BigEndian>().unwrap();
|
||||
let mut sample_counts = Vec::new();
|
||||
let mut sample_deltas = Vec::new();
|
||||
let version = reader.read_u8().unwrap();
|
||||
let flags_a = reader.read_u8().unwrap();
|
||||
let flags_b = reader.read_u8().unwrap();
|
||||
let flags_c = reader.read_u8().unwrap();
|
||||
let flags = u32::from(flags_a) << 16 | u32::from(flags_b) << 8 | u32::from(flags_c);
|
||||
let entry_count = reader.read_u32::<BigEndian>().unwrap();
|
||||
let mut sample_counts = Vec::new();
|
||||
let mut sample_deltas = Vec::new();
|
||||
|
||||
for _i in 0..entry_count {
|
||||
let sc = f.read_u32::<BigEndian>().unwrap();
|
||||
let sd = f.read_u32::<BigEndian>().unwrap();
|
||||
sample_counts.push(sc);
|
||||
sample_deltas.push(sd);
|
||||
}
|
||||
skip(f, current, size);
|
||||
|
||||
Ok(SttsBox {
|
||||
version,
|
||||
flags,
|
||||
entry_count,
|
||||
sample_counts,
|
||||
sample_deltas,
|
||||
})
|
||||
}
|
||||
|
||||
fn parse_stsd_box(f: &mut BufReader<File>, _offset: u64, size: u32) -> Result<StsdBox> {
|
||||
let current = f.seek(SeekFrom::Current(0)).unwrap(); // Current cursor position.
|
||||
|
||||
let version = f.read_u8().unwrap();
|
||||
let flags_a = f.read_u8().unwrap();
|
||||
let flags_b = f.read_u8().unwrap();
|
||||
let flags_c = f.read_u8().unwrap();
|
||||
let flags = u32::from(flags_a) << 16 | u32::from(flags_b) << 8 | u32::from(flags_c);
|
||||
f.read_u32::<BigEndian>().unwrap(); // skip.
|
||||
|
||||
let mut start = 0u64;
|
||||
while start < size as u64 {
|
||||
// Get box header.
|
||||
let header = read_box_header(f, start).unwrap();
|
||||
let BoxHeader{ name, size: s, offset: _ } = header;
|
||||
|
||||
match name {
|
||||
BoxType::Avc1Box => {
|
||||
start = (s as u32 - HEADER_SIZE) as u64;
|
||||
}
|
||||
BoxType::Mp4aBox => {
|
||||
start = (s as u32 - HEADER_SIZE) as u64;
|
||||
}
|
||||
_ => break
|
||||
for _i in 0..entry_count {
|
||||
let sc = reader.read_u32::<BigEndian>().unwrap();
|
||||
let sd = reader.read_u32::<BigEndian>().unwrap();
|
||||
sample_counts.push(sc);
|
||||
sample_deltas.push(sd);
|
||||
}
|
||||
}
|
||||
skip(f, current, size);
|
||||
skip(reader, current, size);
|
||||
|
||||
Ok(StsdBox {
|
||||
version,
|
||||
flags,
|
||||
})
|
||||
Ok(SttsBox {
|
||||
version,
|
||||
flags,
|
||||
entry_count,
|
||||
sample_counts,
|
||||
sample_deltas,
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
fn skip(f: &mut BufReader<File>, current: u64, size: u32) {
|
||||
let after = f.seek(SeekFrom::Current(0)).unwrap();
|
||||
impl<R: Read + Seek> ReadBox<&mut BufReader<R>> for StsdBox {
|
||||
fn read_box(reader: &mut BufReader<R>, _offset: u64, size: u32) -> Result<Self> {
|
||||
let current = reader.seek(SeekFrom::Current(0)).unwrap(); // Current cursor position.
|
||||
|
||||
let version = reader.read_u8().unwrap();
|
||||
let flags_a = reader.read_u8().unwrap();
|
||||
let flags_b = reader.read_u8().unwrap();
|
||||
let flags_c = reader.read_u8().unwrap();
|
||||
let flags = u32::from(flags_a) << 16 | u32::from(flags_b) << 8 | u32::from(flags_c);
|
||||
reader.read_u32::<BigEndian>().unwrap(); // skip.
|
||||
|
||||
let mut start = 0u64;
|
||||
while start < size as u64 {
|
||||
// Get box header.
|
||||
let header = read_box_header(reader, start).unwrap();
|
||||
let BoxHeader{ name, size: s, offset: _ } = header;
|
||||
|
||||
match name {
|
||||
BoxType::Avc1Box => {
|
||||
start = (s as u32 - HEADER_SIZE) as u64;
|
||||
}
|
||||
BoxType::Mp4aBox => {
|
||||
start = (s as u32 - HEADER_SIZE) as u64;
|
||||
}
|
||||
_ => break
|
||||
}
|
||||
}
|
||||
skip(reader, current, size);
|
||||
|
||||
Ok(StsdBox {
|
||||
version,
|
||||
flags,
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
fn skip<R: Read + Seek>(reader: &mut BufReader<R>, current: u64, size: u32) {
|
||||
let after = reader.seek(SeekFrom::Current(0)).unwrap();
|
||||
let remaining_bytes = (size as u64 - (after - current)) as i64;
|
||||
f.seek(SeekFrom::Current(remaining_bytes - HEADER_SIZE as i64)).unwrap();
|
||||
reader.seek(SeekFrom::Current(remaining_bytes - HEADER_SIZE as i64)).unwrap();
|
||||
}
|
||||
|
|
|
|||
|
|
@ -67,7 +67,7 @@ fn read_boxes(f: File) -> Result<BMFF> {
|
|||
// Match and parse the atom boxes.
|
||||
match name {
|
||||
BoxType::FtypBox => {
|
||||
let ftyp = parse_ftyp_box(&mut reader, 0, size as u32).unwrap();
|
||||
let ftyp = FtypBox::read_box(&mut reader, 0, size as u32).unwrap();
|
||||
bmff.ftyp = ftyp;
|
||||
}
|
||||
BoxType::FreeBox => {
|
||||
|
|
@ -77,7 +77,7 @@ fn read_boxes(f: File) -> Result<BMFF> {
|
|||
start = (size as u32 - HEADER_SIZE) as u64;
|
||||
}
|
||||
BoxType::MoovBox => {
|
||||
let moov = parse_moov_box(&mut reader, 0, size as u32).unwrap();
|
||||
let moov = MoovBox::read_box(&mut reader, 0, size as u32).unwrap();
|
||||
bmff.moov = Some(moov);
|
||||
}
|
||||
BoxType::MoofBox => {
|
||||
|
|
@ -97,7 +97,7 @@ fn read_boxes(f: File) -> Result<BMFF> {
|
|||
Ok(bmff)
|
||||
}
|
||||
|
||||
fn read_box_header(reader: &mut BufReader<File>, start: u64) -> Result<BoxHeader> {
|
||||
fn read_box_header<R: Read + Seek>(reader: &mut BufReader<R>, start: u64) -> Result<BoxHeader> {
|
||||
// Seek to offset.
|
||||
let _r = reader.seek(SeekFrom::Current(start as i64));
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue