Camera (Android): init support

CMakeLists.txt

@@ -487,7 +487,7 @@ elseif(ANDROID)
         src/detection/wm/wm_nosupport.c
         src/detection/de/de_nosupport.c
         src/detection/wmtheme/wmtheme_nosupport.c
-        src/detection/camera/camera_nosupport.c
+        src/detection/camera/camera_android.c
         src/util/platform/FFPlatform_unix.c
     )
 elseif(BSD)

src/detection/camera/camera_android.c

@@ -0,0 +1,54 @@
+#include "camera.h"
+
+#include "common/processing.h"
+#include "common/properties.h"
+
+#define FF_TERMUX_API_PATH FASTFETCH_TARGET_DIR_ROOT "/libexec/termux-api"
+#define FF_TERMUX_API_PARAM "CameraInfo"
+
+static inline void wrapYyjsonFree(yyjson_doc** doc)
+{
+    assert(doc);
+    if (*doc)
+        yyjson_doc_free(*doc);
+}
+
+const char* ffDetectCamera(FF_MAYBE_UNUSED FFlist* result)
+{
+    FF_STRBUF_AUTO_DESTROY buffer = ffStrbufCreate();
+
+    if(ffProcessAppendStdOut(&buffer, (char* const[]){
+        FF_TERMUX_API_PATH,
+        FF_TERMUX_API_PARAM,
+        NULL
+    }))
+        return "Starting `" FF_TERMUX_API_PATH " " FF_TERMUX_API_PARAM "` failed";
+
+    yyjson_doc* __attribute__((__cleanup__(wrapYyjsonFree))) doc = yyjson_read_opts(buffer.chars, buffer.length, 0, NULL, NULL);
+    if (!doc)
+        return "Failed to parse camera info";
+
+    yyjson_val* root = yyjson_doc_get_root(doc);
+    if (!yyjson_is_arr(root))
+        return "Camera info result is not a JSON array";
+
+    yyjson_val* device;
+    size_t idx, max;
+    yyjson_arr_foreach(root, idx, max, device)
+    {
+        FFCameraResult* camera = (FFCameraResult*) ffListAdd(result);
+        ffStrbufInitF(&camera->name, "Camera-%s", yyjson_get_str(yyjson_obj_get(device, "facing")));
+        ffStrbufInit(&camera->vendor);
+        ffStrbufInitS(&camera->id, yyjson_get_str(yyjson_obj_get(device, "id")));
+        yyjson_val* format = yyjson_arr_get_first(yyjson_obj_get(device, "jpeg_output_sizes"));
+        if (yyjson_is_obj(format))
+        {
+            camera->width = (uint32_t) yyjson_get_uint(yyjson_obj_get(format, "width"));
+            camera->height = (uint32_t) yyjson_get_uint(yyjson_obj_get(format, "height"));
+        }
+        else
+            camera->width = camera->height = 0;
+    }
+
+    return NULL;
+}