1 files changed, 55 insertions, 0 deletions
diff --git a/src/detection/gpu/gpu_android.c b/src/detection/gpu/gpu_android.c
new file mode 100644
index 0000000..08fd48a
--- /dev/null
+++ b/src/detection/gpu/gpu_android.c
@@ -0,0 +1,55 @@
+#include "gpu.h"
+#include "common/io.h"
+#include "common/strutil.h"
+
+#include <fcntl.h>
+
+static double parseTZDir(int dfd, FFstrbuf* buffer) {
+    if (!ffReadFileBufferRelative(dfd, "type", buffer) || !ffStrbufStartsWithS(buffer, "gpu")) {
+        return FF_GPU_TEMP_UNSET;
+    }
+
+    if (!ffReadFileBufferRelative(dfd, "temp", buffer)) {
+        return FF_GPU_TEMP_UNSET;
+    }
+
+    double value = ffStrbufToDouble(buffer, FF_GPU_TEMP_UNSET); // millidegree Celsius
+    if (value == FF_GPU_TEMP_UNSET) {
+        return FF_GPU_TEMP_UNSET;
+    }
+
+    return value / 1000.;
+}
+
+double ffGPUDetectTempFromTZ(void) {
+    FF_AUTO_CLOSE_DIR DIR* dirp = opendir("/sys/class/thermal/");
+    if (dirp) {
+        FF_STRBUF_AUTO_DESTROY buffer = ffStrbufCreate();
+        int dfd = dirfd(dirp);
+        struct dirent* entry;
+        while ((entry = readdir(dirp)) != NULL) {
+            if (entry->d_name[0] == '.') {
+                continue;
+            }
+            if (!ffStrStartsWith(entry->d_name, "thermal_zone")) {
+                continue;
+            }
+
+            FF_AUTO_CLOSE_FD int subfd = openat(dfd, entry->d_name, O_RDONLY | O_DIRECTORY | O_CLOEXEC);
+            if (subfd < 0) {
+                continue;
+            }
+
+            double result = parseTZDir(subfd, &buffer);
+            if (result != FF_GPU_TEMP_UNSET) {
+                return result;
+            }
+        }
+    }
+    return FF_GPU_TEMP_UNSET;
+}
+
+const char* ffDetectGPUImpl(const FFGPUOptions* options, FFlist* gpus) {
+    FF_UNUSED(options, gpus);
+    return "No permission. Fallbacks to Vulkan, OpenCL or OpenGL instead";
+}