GPU (OpenBSD): adds DRM method

src/detection/gpu/gpu_drm.c

@@ -356,6 +356,7 @@ const char* ffDrmDetectNouveau(FFGPUResult* gpu, int fd) {
 #include "gpu_driver_specific.h"
 
 const char* ffGPUDetectDriverSpecific(const FFGPUOptions* options, FFGPUResult* gpu, FFGpuDriverPciBusId pciBusId) {
+#if !__OpenBSD__
     __typeof__(&ffDetectNvidiaGpuInfo) detectFn;
     const char* soName;
     if (getDriverSpecificDetectionFn(gpu->vendor.chars, &detectFn, &soName) && (options->temp || options->driverSpecific)) {
@@ -375,6 +376,7 @@ const char* ffGPUDetectDriverSpecific(const FFGPUOptions* options, FFGPUResult*
             },
             soName);
     }
+#endif
 
     return "No driver-specific detection function found for the GPU vendor";
 }

src/detection/gpu/gpu_obsd.c

@@ -27,7 +27,7 @@ static inline int pciReadConf(int fd, uint8_t bus, uint8_t device, uint8_t func,
     return 0;
 }
 
-const char* ffDetectGPUImpl(FF_A_UNUSED const FFGPUOptions* options, FFlist* gpus) {
+const char* detectByPci(FF_A_UNUSED const FFGPUOptions* options, FFlist* gpus) {
     char pciDevPath[] = "/dev/pci0";
     FF_AUTO_CLOSE_FD int pcifd = open(pciDevPath, O_RDONLY | O_CLOEXEC);
     if (pcifd < 0) {
@@ -99,3 +99,16 @@ const char* ffDetectGPUImpl(FF_A_UNUSED const FFGPUOptions* options, FFlist* gpu
 
     return NULL;
 }
+
+const char* ffDetectGPUImpl(const FFGPUOptions* options, FFlist* gpus) {
+#if FF_HAVE_DRM
+    if (options->detectionMethod == FF_GPU_DETECTION_METHOD_AUTO) {
+        ffGPUDetectByDrmBSD(options, gpus);
+        if (gpus->length > 0) {
+            return NULL;
+        }
+    }
+#endif
+
+    return detectByPci(options, gpus);
+}