feat: 深入适配 RK628D CSI 采集卡的设备识别、参数读取、自恢复和音频采集

src/video/mod.rs

@@ -4,6 +4,7 @@
 
 pub mod codec_constraints;
 pub mod convert;
+pub mod csi_bridge;
 pub mod decoder;
 pub mod device;
 pub mod encoder;
@@ -25,6 +26,55 @@ pub use shared_video_pipeline::{
 pub use stream_manager::VideoStreamManager;
 pub use streamer::{Streamer, StreamerState};
 
+/// Fine-grained signal status reported by CSI/HDMI bridge devices.
+///
+/// Only `rk_hdmirx` / `rkcif` / tc358743-class bridges can distinguish these
+/// via `VIDIOC_QUERY_DV_TIMINGS` errno; USB UVC devices always report `Ok`
+/// until they fail with a generic timeout.
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum SignalStatus {
+    /// HDMI cable physically disconnected (`ENOLINK`).
+    NoCable,
+    /// TMDS signal present but timings cannot be locked (`ENOLCK`).
+    NoSync,
+    /// Timings outside of hardware capability (`ERANGE`).
+    OutOfRange,
+    /// Generic "no usable source" (fallback for EINVAL / EIO / unknown errnos).
+    NoSignal,
+}
+
+impl SignalStatus {
+    pub fn as_str(self) -> &'static str {
+        match self {
+            SignalStatus::NoCable => "no_cable",
+            SignalStatus::NoSync => "no_sync",
+            SignalStatus::OutOfRange => "out_of_range",
+            SignalStatus::NoSignal => "no_signal",
+        }
+    }
+
+    pub fn from_str(s: &str) -> Option<Self> {
+        Some(match s {
+            "no_cable" => SignalStatus::NoCable,
+            "no_sync" => SignalStatus::NoSync,
+            "out_of_range" => SignalStatus::OutOfRange,
+            "no_signal" => SignalStatus::NoSignal,
+            _ => return None,
+        })
+    }
+}
+
+impl From<SignalStatus> for streamer::StreamerState {
+    fn from(value: SignalStatus) -> Self {
+        match value {
+            SignalStatus::NoCable => streamer::StreamerState::NoCable,
+            SignalStatus::NoSync => streamer::StreamerState::NoSync,
+            SignalStatus::OutOfRange => streamer::StreamerState::OutOfRange,
+            SignalStatus::NoSignal => streamer::StreamerState::NoSignal,
+        }
+    }
+}
+
 pub(crate) fn is_rk_hdmirx_driver(driver: &str, card: &str) -> bool {
     driver.eq_ignore_ascii_case("rk_hdmirx") || card.eq_ignore_ascii_case("rk_hdmirx")
 }
@@ -32,3 +82,13 @@ pub(crate) fn is_rk_hdmirx_driver(driver: &str, card: &str) -> bool {
 pub(crate) fn is_rk_hdmirx_device(device: &device::VideoDeviceInfo) -> bool {
     is_rk_hdmirx_driver(&device.driver, &device.card)
 }
+
+pub(crate) fn is_rkcif_driver(driver: &str) -> bool {
+    driver.eq_ignore_ascii_case("rkcif")
+}
+
+/// Unified check for CSI/HDMI bridge devices (rk_hdmirx, rkcif, etc.)
+/// that require special enumeration and format-selection logic.
+pub(crate) fn is_csi_hdmi_bridge(device: &device::VideoDeviceInfo) -> bool {
+    is_rk_hdmirx_device(device) || is_rkcif_driver(&device.driver)
+}