Camera discovery

Link Symbian::Camera and include <symbian/api/camera/camera.h> to call DiscoverCameras(). It queries ECam's available camera count without reserving or powering hardware or starting preview.

CameraInventory carries the count. Native negative results become absl::StatusOr errors rather than zero cameras. The query is synchronous and stateless and needs no event loop. Original ECam classes and the frozen import are isolated in the native bridge; the SDK also includes the legacy header.

The API does not report camera identity, orientation, permission or capture modes. Camera opening, reservation, preview and capture are unsupported. Those legacy operations can leave and require request and buffer lifetimes that this discovery API does not supply.

Show an inventory label

Link Symbian::Camera. Discovery can populate a settings label without opening or reserving a camera:

#include <string>

#include "symbian/api/camera/camera.h"

absl::StatusOr<std::string> CameraLabel() {
  auto cameras = symbian::api::camera::DiscoverCameras();
  if (!cameras.ok()) {
    return cameras.status();
  }
  if (cameras->available_count == 0) {
    return "No cameras reported";
  }
  return std::to_string(cameras->available_count) + " camera slots";
}

A positive count does not authorize enabling a capture action; this component provides discovery only.