fixup! Implement a decoder

Author: lookback-hugotunius

src/decoder.rs

@@ -99,14 +99,14 @@ impl Decoder {
             (*pkt).buf = buf;
             (*pkt).data = data_ptr.cast();
             (*pkt).pts = packet.pts();
-
-            pkt
             // This should be the size of the data without the padding
             (*pkt).size = (len as i32) - sys::AV_INPUT_BUFFER_PADDING_SIZE as i32;
+
+            pkt
         };
         self.pts_map.set(packet.pts(), packet.rotation());
-
         let ret = unsafe { sys::avcodec_send_packet(self.ctx, pkt) };
+        // Regardless of errors we are done with this packet, parts of the packet might have been
         // retained in the decoder.
         unsafe {
             sys::av_packet_free(&mut pkt);
@@ -295,7 +295,7 @@ impl Default for DecodedFrame {
 
 impl Drop for DecodedFrame {
     fn drop(&mut self) {
-        if !self.0.is_null() {
+        if self.0.is_null() {
             return;
         }
 
@@ -308,7 +308,7 @@ impl Drop for DecodedFrame {
 impl Default for PtsMap {
     fn default() -> Self {
         Self {
-        if self.0.is_null() {
+            map: [(-1, 0); 16],
             cur: 0,
         }
     }