enhance libcamera test with detailed device and IPA path checks

Author: saeugetier

test_libcamera.cpp

@@ -4,11 +4,84 @@
 #include <unistd.h>
 #include <cstring>
 #include <cerrno>
+#include <dirent.h>
+#include <sys/ioctl.h>
+#include <linux/media.h>
+#include <linux/videodev2.h>
 
 #include <libcamera/libcamera.h>
 
 using namespace libcamera;
 
+void listDirectory(const char* path) {
+    DIR* dir = opendir(path);
+    if (!dir) {
+        std::cout << "  Cannot open " << path << ": " << strerror(errno) << std::endl;
+        return;
+    }
+    
+    struct dirent* entry;
+    while ((entry = readdir(dir)) != nullptr) {
+        if (entry->d_name[0] != '.') {
+            std::cout << "  " << entry->d_name << std::endl;
+        }
+    }
+    closedir(dir);
+}
+
+void testMediaDevice(const char* dev) {
+    int fd = open(dev, O_RDWR);
+    if (fd < 0) {
+        std::cout << "[FAIL] Cannot open " << dev << ": " << strerror(errno) << std::endl;
+        return;
+    }
+    
+    struct media_device_info info;
+    memset(&info, 0, sizeof(info));
+    
+    if (ioctl(fd, MEDIA_IOC_DEVICE_INFO, &info) < 0) {
+        std::cout << "[FAIL] Cannot get device info for " << dev << ": " << strerror(errno) << std::endl;
+        close(fd);
+        return;
+    }
+    
+    std::cout << "[OK] " << dev << ": " << info.driver << " - " << info.model << std::endl;
+    
+    // Enumerate entities
+    struct media_entity_desc entity;
+    memset(&entity, 0, sizeof(entity));
+    entity.id = MEDIA_ENT_ID_FLAG_NEXT;
+    
+    std::cout << "  Entities:" << std::endl;
+    while (ioctl(fd, MEDIA_IOC_ENUM_ENTITIES, &entity) == 0) {
+        std::cout << "    [" << entity.id << "] " << entity.name << " (type: " << entity.type << ")" << std::endl;
+        entity.id |= MEDIA_ENT_ID_FLAG_NEXT;
+    }
+    
+    close(fd);
+}
+
+void testV4L2Device(const char* dev) {
+    int fd = open(dev, O_RDWR);
+    if (fd < 0) {
+        std::cout << "[FAIL] Cannot open " << dev << ": " << strerror(errno) << std::endl;
+        return;
+    }
+    
+    struct v4l2_capability cap;
+    memset(&cap, 0, sizeof(cap));
+    
+    if (ioctl(fd, VIDIOC_QUERYCAP, &cap) < 0) {
+        std::cout << "[FAIL] Cannot query " << dev << ": " << strerror(errno) << std::endl;
+        close(fd);
+        return;
+    }
+    
+    std::cout << "[OK] " << dev << ": " << cap.card << " (" << cap.driver << ")" << std::endl;
+    
+    close(fd);
+}
+
 int main()
 {
     std::cout << "=== libcamera Test ===" << std::endl;
@@ -51,6 +124,38 @@ int main()
         }
     }
 
+    // Check IPA files
+    std::cout << "\n--- IPA Module Path ---" << std::endl;
+    const char* ipaModulePath = getenv("LIBCAMERA_IPA_MODULE_PATH");
+    if (ipaModulePath) {
+        listDirectory(ipaModulePath);
+        std::string ipaSubdir = std::string(ipaModulePath) + "/ipa";
+        std::cout << "  Subdir " << ipaSubdir << ":" << std::endl;
+        listDirectory(ipaSubdir.c_str());
+    }
+
+    std::cout << "\n--- IPA Config Path ---" << std::endl;
+    const char* ipaConfigPath = getenv("LIBCAMERA_IPA_CONFIG_PATH");
+    if (ipaConfigPath) {
+        listDirectory(ipaConfigPath);
+        std::string rpiPath = std::string(ipaConfigPath) + "/rpi";
+        std::cout << "  Subdir " << rpiPath << ":" << std::endl;
+        listDirectory(rpiPath.c_str());
+        std::string pispPath = rpiPath + "/pisp";
+        std::cout << "  Subdir " << pispPath << ":" << std::endl;
+        listDirectory(pispPath.c_str());
+    }
+
+    // Test media devices with ioctls
+    std::cout << "\n--- Media Device Details ---" << std::endl;
+    testMediaDevice("/dev/media0");
+    testMediaDevice("/dev/media1");
+
+    // Test V4L2 devices
+    std::cout << "\n--- V4L2 Device Details ---" << std::endl;
+    testV4L2Device("/dev/video0");
+    testV4L2Device("/dev/video1");
+
     // Initialize CameraManager
     std::cout << "\n--- Initializing CameraManager ---" << std::endl;