From feb20c611752e88c86b738febed30bdb90234006 Mon Sep 17 00:00:00 2001
From: iximeow <me@iximeow.net>
Date: Mon, 19 Oct 2020 01:20:58 -0700
Subject: get and report readout modes at startup

---
 src/qhyccd/QHYCCDCam.rs |  5 +++++
 src/qhyccd/mod.rs       | 43 +++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 48 insertions(+)

diff --git a/src/qhyccd/QHYCCDCam.rs b/src/qhyccd/QHYCCDCam.rs
index 2f6b4fb..246681a 100644
--- a/src/qhyccd/QHYCCDCam.rs
+++ b/src/qhyccd/QHYCCDCam.rs
@@ -199,4 +199,9 @@ extern "C" {
     pub fn GetQHYCCDLiveFrame(handle: *mut os::raw::c_void, w: *mut os::raw::c_int, h: *mut os::raw::c_int, bpp: *mut os::raw::c_int, channels: *mut os::raw::c_int, data: *mut os::raw::c_uchar) -> os::raw::c_int;
     pub fn CloseQHYCCD(handle: *mut os::raw::c_void) -> os::raw::c_int;
     pub fn ReleaseQHYCCDResource() -> os::raw::c_int;
+    pub fn GetQHYCCDNumberOfReadModes(handle: *mut os::raw::c_void, num_modes: *mut os::raw::c_int) -> os::raw::c_int;
+    pub fn GetQHYCCDReadModeResolution(handle: *mut os::raw::c_void, mode_number: os::raw::c_int, width: *mut os::raw::c_int, height: *mut os::raw::c_int) -> os::raw::c_int;
+    pub fn GetQHYCCDReadModeName(handle: *mut os::raw::c_void, mode_number: os::raw::c_int, name: *mut os::raw::c_char) -> os::raw::c_int;
+    pub fn SetQHYCCDReadMode(handle: *mut os::raw::c_void, mode_number: os::raw::c_int) -> os::raw::c_int;
+    pub fn GetQHYCCDReadMode(handle: *mut os::raw::c_void, mode_number: *mut os::raw::c_int) -> os::raw::c_int;
 }
diff --git a/src/qhyccd/mod.rs b/src/qhyccd/mod.rs
index bda6822..e819bd4 100644
--- a/src/qhyccd/mod.rs
+++ b/src/qhyccd/mod.rs
@@ -172,6 +172,9 @@ pub fn connect(camera_idx: i32) -> Result<(Receiver<QHYResponse>, Sender<QHYMess
             },
         };
 
+        eprintln!("camera readout modes: {:?}", camera.readout_modes());
+        eprintln!("current mode: {}", camera.get_readout_mode().expect("can get current read mode"));
+
         camera.set_defaults().unwrap();
 
         // sleep for 2ms between waiting for messages and reading frames. This introduces an
@@ -361,6 +364,13 @@ fn acquire(camera_idx: i32) -> Result<Camera> {
     }
 }
 
+#[derive(Debug)]
+struct ReadoutMode {
+    width: u32,
+    height: u32,
+    name: String,
+}
+
 impl Camera {
     pub fn get_frame(&mut self) -> Option<Vec<u8>> {
         if self.frame_size != self.image_buf_size() {
@@ -381,6 +391,39 @@ impl Camera {
             check(QHYCCDCam::ControlQHYCCDTemp(self.handle, temp))
         }
     }
+    pub fn readout_modes(&self) -> Result<Vec<ReadoutMode>> {
+        unsafe {
+        let mut num_readout_modes = 0;
+        check(QHYCCDCam::GetQHYCCDNumberOfReadModes(self.handle, &mut num_readout_modes as *mut os::raw::c_int))?;
+        let mut modes = Vec::new();
+        for i in 0..num_readout_modes {
+            let mut width = 0;
+            let mut height = 0;
+            let mut name = [0i8; 512];
+            check(QHYCCDCam::GetQHYCCDReadModeResolution(self.handle, i, &mut width as *mut i32, &mut height as *mut i32))?;
+            check(QHYCCDCam::GetQHYCCDReadModeName(self.handle, i, name.as_mut_ptr()))?;
+            modes.push(ReadoutMode {
+                name: std::ffi::CStr::from_ptr(name.as_ptr()).to_str().expect("valid string").to_string(),
+                width: width as u32,
+                height: height as u32,
+            });
+        }
+
+        Ok(modes)
+        }
+    }
+    pub fn get_readout_mode(&self) -> Result<u32> {
+        let mut mode = 0;
+        unsafe {
+            check(QHYCCDCam::GetQHYCCDReadMode(self.handle, &mut mode))?;
+        }
+        Ok(mode as u32)
+    }
+    pub fn set_readout_mode(&self, mode: u32) -> Result<()> {
+        unsafe {
+            check(QHYCCDCam::SetQHYCCDReadMode(self.handle, mode as i32))
+        }
+    }
     pub fn has_control(&self, control: Control) -> bool {
         unsafe {
             match QHYResult::from(QHYCCDCam::IsQHYCCDControlAvailable(self.handle, control as i32) as u32) {
-- 
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