UsbCamera: Scale some properties to make them constently percentages.

The "raw" version of these properties are still available, just prefixed with "raw_".
2026-06-21 01:01:43 +00:00 · 2016-12-22 20:51:04 -08:00
parent 10b13da3da
commit ce69783871
8 changed files with 489 additions and 158 deletions
--- a/examples/settings/settings.cpp
+++ b/examples/settings/settings.cpp
@@ -0,0 +1,95 @@
+#include <chrono>
+#include <thread>
+
+#include "cscore.h"
+
+#include "llvm/SmallString.h"
+#include "llvm/raw_ostream.h"
+
+int main(int argc, char** argv) {
+  if (argc < 2) {
+    llvm::errs() << "Usage: settings camera [prop val] ... -- [prop val]...\n";
+    llvm::errs() << "  Example: settings 1 brightness 30 raw_contrast 10\n";
+    return 1;
+  }
+
+  int id;
+  if (llvm::StringRef{argv[1]}.getAsInteger(10, id)) {
+    llvm::errs() << "Expected number for camera\n";
+    return 2;
+  }
+
+  cs::UsbCamera camera{"usbcam", id};
+
+  // Set prior to connect
+  int arg = 2;
+  llvm::StringRef propName;
+  for (; arg < argc && llvm::StringRef{argv[arg]} != "--"; ++arg) {
+    if (propName.empty())
+      propName = argv[arg];
+    else {
+      llvm::StringRef propVal{argv[arg]};
+      int intVal;
+      if (propVal.getAsInteger(10, intVal))
+        camera.GetProperty(propName).SetString(propVal);
+      else
+        camera.GetProperty(propName).Set(intVal);
+      propName = llvm::StringRef{};
+    }
+  }
+  if (llvm::StringRef{argv[arg]} == "--") ++arg;
+
+  // Wait to connect
+  while (!camera.IsConnected())
+    std::this_thread::sleep_for(std::chrono::milliseconds(10));
+
+  // Set rest
+  propName = llvm::StringRef{};
+  for (; arg < argc; ++arg) {
+    if (propName.empty())
+      propName = argv[arg];
+    else {
+      llvm::StringRef propVal{argv[arg]};
+      int intVal;
+      if (propVal.getAsInteger(10, intVal))
+        camera.GetProperty(propName).SetString(propVal);
+      else
+        camera.GetProperty(propName).Set(intVal);
+      propName = llvm::StringRef{};
+    }
+  }
+
+  // Print settings
+  llvm::SmallString<64> buf;
+  llvm::outs() << "Properties:\n";
+  for (const auto& prop : camera.EnumerateProperties()) {
+    llvm::outs() << "  " << prop.GetName();
+    switch (prop.GetKind()) {
+      case cs::VideoProperty::kBoolean:
+        llvm::outs() << " (bool): " << "value=" << prop.Get()
+                     << " default=" << prop.GetDefault();
+        break;
+      case cs::VideoProperty::kInteger:
+        llvm::outs() << " (int): "
+                     << "value=" << prop.Get() << " min=" << prop.GetMin()
+                     << " max=" << prop.GetMax() << " step=" << prop.GetStep()
+                     << " default=" << prop.GetDefault();
+        break;
+      case cs::VideoProperty::kString:
+        llvm::outs() << " (string): " << prop.GetString(buf);
+        break;
+      case cs::VideoProperty::kEnum: {
+        llvm::outs() << " (enum): " << "value=" << prop.Get();
+        auto choices = prop.GetChoices();
+        for (size_t i = 0; i < choices.size(); ++i) {
+          if (choices[i].empty()) continue;
+          llvm::outs() << "\n    " << i << ": " << choices[i];
+        }
+        break;
+      }
+      default:
+        break;
+    }
+    llvm::outs() << '\n';
+  }
+}