opt codec

1. use src width/height to convert yuv
2. align dst yuv to avoid illegal memory access
3. init yuvfmt when new codec
4. move remote reset calls from empty conns judge to emtpy remote conns
   judge

Signed-off-by: 21pages <pages21@163.com>

libs/scrap/src/common/android.rs

@@ -43,7 +43,7 @@ impl crate::TraitCapturer for Capturer {
             unsafe {
                 std::ptr::copy_nonoverlapping(buf.as_ptr(), self.rgba.as_mut_ptr(), buf.len())
             };
-            Ok(Frame::new(&self.rgba, self.height()))
+            Ok(Frame::new(&self.rgba, self.width(), self.height()))
         } else {
             return Err(io::ErrorKind::WouldBlock.into());
         }
@@ -51,16 +51,23 @@ impl crate::TraitCapturer for Capturer {
 }
 
 pub struct Frame<'a> {
-    pub data: &'a [u8],
-    pub stride: Vec<usize>,
+    data: &'a [u8],
+    width: usize,
+    height: usize,
+    stride: Vec<usize>,
 }
 
 impl<'a> Frame<'a> {
-    pub fn new(data: &'a [u8], h: usize) -> Self {
-        let stride = data.len() / h;
-        let mut v = Vec::new();
-        v.push(stride);
-        Frame { data, stride: v }
+    pub fn new(data: &'a [u8], width: usize, height: usize) -> Self {
+        let stride0 = data.len() / height;
+        let mut stride = Vec::new();
+        stride.push(stride0);
+        Frame {
+            data,
+            width,
+            height,
+            stride,
+        }
     }
 }
 
@@ -69,6 +76,14 @@ impl<'a> crate::TraitFrame for Frame<'a> {
         self.data
     }
 
+    fn width(&self) -> usize {
+        self.width
+    }
+
+    fn height(&self) -> usize {
+        self.height
+    }
+
     fn stride(&self) -> Vec<usize> {
         self.stride.clone()
     }