avi: handle audio extradata shorter than chunk size

[nihav.git] / nihav-commonfmt / src / demuxers / avi.rs

diff --git a/nihav-commonfmt/src/demuxers/avi.rs b/nihav-commonfmt/src/demuxers/avi.rs
index ed4edd4d67b7836c1335ac3970958e68d1db7764..43d154a30b487959f8818d597d09f1059258d245 100644 (file)
--- a/nihav-commonfmt/src/demuxers/avi.rs
+++ b/nihav-commonfmt/src/demuxers/avi.rs
@@ -154,6 +154,12 @@ impl<'a> DemuxCore<'a> for AVIDemuxer<'a> {
     }
 }
 
+impl<'a> NAOptionHandler for AVIDemuxer<'a> {
+    fn get_supported_options(&self) -> &[NAOptionDefinition] { &[] }
+    fn set_options(&mut self, _options: &[NAOption]) { }
+    fn query_option_value(&self, _name: &str) -> Option<NAValue> { None }
+}
+
 impl<'a> AVIDemuxer<'a> {
     fn new(io: &'a mut ByteReader<'a>) -> Self {
         AVIDemuxer {
@@ -393,7 +399,7 @@ fn parse_strf(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) ->
 fn parse_strf_vids(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> {
     if size < 40 { return Err(InvalidData); }
     let bi_size         = dmx.src.read_u32le()?;
-    if (bi_size as usize) > size { return Err(InvalidData); }
+    if (bi_size as usize) < 40 { return Err(InvalidData); }
     let width           = dmx.src.read_u32le()?;
     let height          = dmx.src.read_u32le()? as i32;
     let planes          = dmx.src.read_u16le()?;
@@ -409,7 +415,8 @@ fn parse_strf_vids(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize
 
     let flip = height < 0;
     let format = if bitcount > 8 { RGB24_FORMAT } else { PAL8_FORMAT };
-    let vhdr = NAVideoInfo::new(width as usize, if flip { -height as usize } else { height as usize}, flip, format);
+    let mut vhdr = NAVideoInfo::new(width as usize, if flip { -height as usize } else { height as usize}, flip, format);
+    vhdr.bits = (planes as u8) * (bitcount as u8);
     let vci = NACodecTypeInfo::Video(vhdr);
     let edata = dmx.read_extradata(size - 40)?;
     if colors > 0 {
@@ -448,7 +455,13 @@ fn parse_strf_auds(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize
 
     let soniton = NASoniton::new(bits_per_sample as u8, SONITON_FLAG_SIGNED);
     let ahdr = NAAudioInfo::new(samplespersec, channels as u8, soniton, block_align as usize);
-    let edata = dmx.read_extradata(size - 16)?;
+    let edata = if size > 16 {
+            let edata_size  = dmx.src.read_u16le()? as usize;
+            validate!(edata_size + 18 <= size);
+            dmx.read_extradata(size - 18)?
+        } else {
+            None
+        };
     let cname = match register::find_codec_from_wav_twocc(w_format_tag) {
                     None => "unknown",
                     Some(name) => name,
@@ -498,6 +511,7 @@ fn parse_junk(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) ->
     Ok(size)
 }
 
+#[allow(clippy::verbose_bit_mask)]
 fn parse_idx1(src: &mut ByteReader, strmgr: &mut StreamManager, seek_idx: &mut SeekIndex, size: usize, movi_pos: u64, key_offs: &mut Vec<u64>) -> DemuxerResult<usize> {
     validate!((size & 15) == 0);
     let mut tag = [0u8; 4];
@@ -520,7 +534,8 @@ fn parse_idx1(src: &mut ByteReader, strmgr: &mut StreamManager, seek_idx: &mut S
                     let (tb_num, tb_den) = str.get_timebase();
                     let pts = counter[stream_no];
                     let time = NATimeInfo::ts_to_time(pts, 1000, tb_num, tb_den);
-                    seek_idx.add_entry(stream_no as u32, SeekEntry { time, pts, pos: offset + movi_pos - 4 });
+                    validate!(offset >= movi_pos);
+                    seek_idx.add_entry(stream_no as u32, SeekEntry { time, pts, pos: offset });
                 }
                 key_offs.push(offset);
             }