Configurable encoder pipeline

src/demux/info.rs

@@ -0,0 +1,37 @@
+use ffmpeg_sys_next::AVCodecParameters;
+use crate::fraction::Fraction;
+
+#[derive(Clone, Debug, PartialEq)]
+pub struct DemuxStreamInfo {
+    pub channels: Vec<StreamInfoChannel>,
+}
+
+#[derive(Clone, Debug, PartialEq)]
+pub enum StreamChannelType {
+    Video,
+    Audio,
+}
+
+#[derive(Clone, Debug, PartialEq)]
+pub struct StreamInfoChannel {
+    pub index: usize,
+    pub channel_type: StreamChannelType,
+    pub width: usize,
+    pub height: usize,
+    pub codec_params: *const AVCodecParameters,
+}
+
+unsafe impl Sync for StreamInfoChannel {}
+unsafe impl Send for StreamInfoChannel {}
+
+impl TryInto<Fraction> for StreamInfoChannel {
+    type Error = ();
+
+    fn try_into(self) -> Result<Fraction, Self::Error> {
+        if self.channel_type == StreamChannelType::Video {
+            Ok(Fraction::from((self.width, self.height)))
+        } else {
+            Err(())
+        }
+    }
+}