fn parse_audio_edata(br: &mut ByteReader, start_pos: u64, size: u64) -> DemuxerResult<Option<Vec<u8>>> {
let read_part = br.tell() - start_pos;
if read_part + 8 < size {
+ let mut buf = [0; 8];
+ br.peek_buf(&mut buf)?;
+ if &buf[4..8] != b"wave" {
+ let mut buf = vec![0; (size - read_part) as usize];
+ br.read_buf(&mut buf)?;
+ return Ok(Some(buf));
+ }
+
let csize = br.read_u32be()? as u64;
let ctag = br.read_u32be()?;
validate!(read_part + csize <= size);
let edata = if br.tell() - start_pos + 4 < size {
//todo skip various common atoms
let edata_size = br.read_u32be()? as usize;
- let mut buf = vec![0; edata_size];
+ validate!(edata_size >= 4);
+ let mut buf = vec![0; edata_size - 4];
br.read_buf(buf.as_mut_slice())?;
Some(buf)
} else {
self.last_offset += size as u64;
if self.stream_type == StreamType::Video {
self.samples_left -= 1;
- } else if self.frame_samples != 0 {
- self.samples_left -= self.frame_samples.min(self.samples_left);
+ } else if self.frame_samples != 0 && self.bsize != 0 {
+ let nblocks = size / self.bsize;
+ if nblocks > 0 {
+ let consumed = (nblocks * self.frame_samples).min(self.samples_left);
+ self.samples_left -= consumed;
+ } else {
+ self.samples_left = 0;
+ }
} else {
self.samples_left = 0;
}