X-Git-Url: https://git.nihav.org/?p=nihav.git;a=blobdiff_plain;f=nihav-core%2Fsrc%2Fframe.rs;h=8c58e19b66756c2ebbcaf45fb981cc245ac37394;hp=9423b0ee8e475e5a87086a808fdb37cc9d4a1517;hb=a480a0de101483d802a11e72d758dae00fa4860a;hpb=4c05fc3e4513ba3789dcc237493abcbe74d548e3

diff --git a/nihav-core/src/frame.rs b/nihav-core/src/frame.rs
index 9423b0e..8c58e19 100644
--- a/nihav-core/src/frame.rs
+++ b/nihav-core/src/frame.rs
@@ -251,6 +251,12 @@ impl<T: Clone> NAAudioBuffer<T> {
     }
     /// Return the length of frame in samples.
     pub fn get_length(&self) -> usize { self.len }
+    /// Truncates buffer length if possible.
+    ///
+    /// In case when new length is larger than old length nothing is done.
+    pub fn truncate(&mut self, new_len: usize) {
+        self.len = self.len.min(new_len);
+    }
 
     fn print_contents(&self, datatype: &str) {
         println!("Audio buffer with {} data, stride {}, step {}", datatype, self.stride, self.step);
@@ -973,7 +979,7 @@ impl NATimeInfo {
             }
         }
     }
-    fn get_cur_ts(&self) -> u64 { self.pts.unwrap_or(self.dts.unwrap_or(0)) }
+    fn get_cur_ts(&self) -> u64 { self.pts.unwrap_or_else(|| self.dts.unwrap_or(0)) }
     fn get_cur_millis(&self) -> u64 {
         let ts = self.get_cur_ts();
         Self::ts_to_time(ts, 1000, self.tb_num, self.tb_den)
@@ -1283,6 +1289,8 @@ pub struct NAStream {
     pub tb_num:         u32,
     /// Timebase denominator.
     pub tb_den:         u32,
+    /// Duration in timebase units (zero if not available).
+    pub duration:       u64,
 }
 
 /// A specialised reference-counted `NAStream` type.
@@ -1306,9 +1314,9 @@ pub fn reduce_timebase(tb_num: u32, tb_den: u32) -> (u32, u32) {
 
 impl NAStream {
     /// Constructs a new `NAStream` instance.
-    pub fn new(mt: StreamType, id: u32, info: NACodecInfo, tb_num: u32, tb_den: u32) -> Self {
+    pub fn new(mt: StreamType, id: u32, info: NACodecInfo, tb_num: u32, tb_den: u32, duration: u64) -> Self {
         let (n, d) = reduce_timebase(tb_num, tb_den);
-        NAStream { media_type: mt, id, num: 0, info: info.into_ref(), tb_num: n, tb_den: d }
+        NAStream { media_type: mt, id, num: 0, info: info.into_ref(), tb_num: n, tb_den: d, duration }
     }
     /// Returns stream id.
     pub fn get_id(&self) -> u32 { self.id }
@@ -1328,6 +1336,8 @@ impl NAStream {
         self.tb_num = n;
         self.tb_den = d;
     }
+    /// Returns stream duration.
+    pub fn get_duration(&self) -> usize { self.num }
     /// Converts current instance into a reference-counted one.
     pub fn into_ref(self) -> NAStreamRef { Arc::new(self) }
 }