add seeking functionality

1 files changed, 21 insertions, 0 deletions

diff --git a/src/main.rs b/src/main.rs
index c26e671..784fccb 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -90,6 +90,7 @@ fn main() {
     let mut decode_video = true;
     let mut decode_audio = true;
     let mut nmode = NumberMode::FrmPTS;
+    let mut seek_time = 0u64;
 
     while (cur_arg < args.len()) && args[cur_arg].starts_with('-') {
         match args[cur_arg].as_str() {
@@ -100,6 +101,19 @@ fn main() {
             "-nm=count"  => { nmode = NumberMode::Counter; },
             "-nm=pktpts" => { nmode = NumberMode::PktPTS; },
             "-nm=frmpts" => { nmode = NumberMode::FrmPTS; },
+            "-seek"     => {
+                cur_arg += 1;
+                if cur_arg == args.len() {
+                    println!("seek time missing");
+                    return;
+                }
+                let ret = args[cur_arg].parse::<u64>();
+                if ret.is_err() {
+                    println!("wrong seek time");
+                    return;
+                }
+                seek_time = ret.unwrap();
+            },
             _           => { println!("unknown option {}", args[cur_arg]); return; },
         }
         cur_arg += 1;
@@ -132,6 +146,13 @@ println!("trying demuxer {} on {}", dmx_name, name);
     br.seek(SeekFrom::Start(0)).unwrap();
     let mut dmx = create_demuxer(dmx_fact, &mut br).unwrap();
 
+    if seek_time > 0 {
+        let ret = dmx.seek(seek_time);
+        if ret.is_err() {
+println!(" seek error {:?}", ret.err().unwrap());
+        }
+    }
+
     let mut decs: Vec<Option<(Box<NADecoderSupport>, Box<dyn NADecoder>)>> = Vec::new();
     let mut sids: Vec<u32> = Vec::new();
     let mut writers: Vec<Outputter> = Vec::new();