adapt to freshly-introduced encoder capabilities

2 files changed, 5 insertions, 0 deletions

diff --git a/src/main.rs b/src/main.rs
index 41a4a92..409c677 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -707,6 +707,10 @@ println!("can't generate default channel map for {} channels", dainfo.channels);
 fn encode_frame(dst_id: u32, encoder: &mut Box<dyn NAEncoder>, cvt: &mut OutputConvert, frm: NAFrameRef, scale_opts: &[(String, String)]) -> bool {
     let buf = frm.get_buffer();
     let cbuf = if let NABufferType::None = buf {
+        if (encoder.get_capabilities() & ENC_CAPS_SKIPFRAME) == 0 {
+            println!("encoder does not support skip frames, skipping");
+            return true;
+        }
         buf
     } else {
         match cvt {
diff --git a/src/null.rs b/src/null.rs
index 3e9b813..eece63b 100644
--- a/src/null.rs
+++ b/src/null.rs
@@ -16,6 +16,7 @@ impl NAEncoder for NullEncoder {
     fn negotiate_format(&self, encinfo: &EncodeParameters) -> EncoderResult<EncodeParameters> {
         Ok(*encinfo)
     }
+    fn get_capabilities(&self) -> u64 { 0 }
     fn init(&mut self, stream_id: u32, encinfo: EncodeParameters) -> EncoderResult<NAStreamRef> {
         let stype = match encinfo.format {
                 NACodecTypeInfo::Audio(_) => StreamType::Audio,