[change] compile options for unused-parameter to suite standards

binding.gyp

@@ -1,5 +1,10 @@
-{"targets": [
-    {"target_name": "v4l2camera", "sources": ["capture.c", "v4l2camera.cc"],
-     "cflags": ["-Wall", "-Wextra", "-pedantic"],
-     "cflags_c": ["-std=c11"], "cflags_cc": ["-std=c++11"]}
-]}
+{
+  "targets": [{
+    "target_name": "v4l2camera", 
+    "sources": ["capture.c", "v4l2camera.cc"],
+    "cflags": ["-Wall", "-Wextra", "-pedantic"],
+    "cflags_c": ["-std=c11", "-Wno-unused-parameter"], 
+    "cflags_cc": ["-std=c++11"]
+  }]
+}
+

c-examples.makefile

@@ -1,7 +1,7 @@
 # make -f c-examples.makefile
 
 CC = gcc
-CFLAGS = -std=c11 -Wall -Wextra -pedantic
+CFLAGS = -std=c11 -Wall -Wextra -Wno-unused-parameter -pedantic
 all: capture-jpeg list-controls list-formats
 
 capture-jpeg: capture.h capture.c c-examples/capture-jpeg.c

capture.c

@@ -26,7 +26,6 @@ void camera_format_name(uint32_t format_id, char* name)
 }
 
 static void log_stderr(camera_log_t type, const char* msg, void* pointer) {
-  (void) pointer;
   switch (type) {
   case CAMERA_ERROR:
     fprintf(stderr, "ERROR [%s] %d: %s\n", msg, errno, strerror(errno));
@@ -175,7 +174,7 @@ static bool camera_load_settings(camera_t* camera)
 static bool camera_set_config(camera_t* camera, camera_config_t* config)
 {
   if (config->width > 0 && config->height > 0) {
-    uint32_t pixformat = config->format || V4L2_PIX_FMT_YUYV;
+    uint32_t pixformat = config->format ? config->format : V4L2_PIX_FMT_YUYV;
     struct v4l2_format format;
     memset(&format, 0, sizeof format);
     format.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
@@ -288,7 +287,6 @@ static inline int minmax(int min, int v, int max)
 }
 static inline uint8_t yuv2r(int y, int u, int v)
 {
-  (void) u;
   return minmax(0, (y + 359 * v) >> 8, 255);
 }
 static inline uint8_t yuv2g(int y, int u, int v)
@@ -297,7 +295,6 @@ static inline uint8_t yuv2g(int y, int u, int v)
 }
 static inline uint8_t yuv2b(int y, int u, int v)
 {
-  (void) v;
   return minmax(0, (y + 454 * u) >> 8, 255);
 }
 uint8_t* yuyv2rgb(uint8_t* yuyv, uint32_t width, uint32_t height)

v4l2camera.cc

@@ -238,7 +238,7 @@ struct CaptureData {
 static void cameraCaptureClose(uv_handle_t* handle) {
   delete handle;
 }
-static void cameraCaptureCB(uv_poll_t* handle, int status, int events)
+static void cameraCaptureCB(uv_poll_t* handle, int /*status*/, int /*events*/)
 {
   v8::HandleScope scope;
   auto data = static_cast<CaptureData*>(handle->data);