view camera (#11040)

* view camera

Signed-off-by: 21pages <sunboeasy@gmail.com>

* `No cameras` prompt if no cameras available,  `peerGetSessionsCount` use
connType as parameter

Signed-off-by: 21pages <sunboeasy@gmail.com>

* fix, use video_service_name rather than display_idx as key in qos,etc

Signed-off-by: 21pages <sunboeasy@gmail.com>

---------

Signed-off-by: 21pages <sunboeasy@gmail.com>
Co-authored-by: Adwin White <adwinw01@gmail.com>
Co-authored-by: RustDesk <71636191+rustdesk@users.noreply.github.com>

libs/scrap/src/common/dxgi.rs

@@ -70,23 +70,30 @@ impl TraitCapturer for Capturer {
 
 pub struct PixelBuffer<'a> {
     data: &'a [u8],
+    pixfmt: Pixfmt,
     width: usize,
     height: usize,
     stride: Vec<usize>,
 }
 
 impl<'a> PixelBuffer<'a> {
-    pub fn new(data: &'a [u8], width: usize, height: usize) -> Self {
+    pub fn new(data: &'a [u8], pixfmt: Pixfmt, width: usize, height: usize) -> Self {
         let stride0 = data.len() / height;
         let mut stride = Vec::new();
         stride.push(stride0);
         PixelBuffer {
             data,
+            pixfmt,
             width,
             height,
             stride,
         }
     }
+
+    #[allow(non_snake_case)]
+    pub fn with_BGRA(data: &'a [u8], width: usize, height: usize) -> Self {
+        Self::new(data, Pixfmt::BGRA, width, height)
+    }
 }
 
 impl<'a> crate::TraitPixelBuffer for PixelBuffer<'a> {
@@ -107,7 +114,7 @@ impl<'a> crate::TraitPixelBuffer for PixelBuffer<'a> {
     }
 
     fn pixfmt(&self) -> Pixfmt {
-        Pixfmt::BGRA
+        self.pixfmt
     }
 }
 
@@ -232,7 +239,7 @@ impl CapturerMag {
 impl TraitCapturer for CapturerMag {
     fn frame<'a>(&'a mut self, _timeout_ms: Duration) -> io::Result<Frame<'a>> {
         self.inner.frame(&mut self.data)?;
-        Ok(Frame::PixelBuffer(PixelBuffer::new(
+        Ok(Frame::PixelBuffer(PixelBuffer::with_BGRA(
             &self.data,
             self.inner.get_rect().1,
             self.inner.get_rect().2,