Remove LOGC()

It is not clear when to use LOGC() rather than LOGE(). Always use
LOGE().

Moreover, enum sc_log_level has no "critical" log level.

app/src/controller.c

@@ -113,7 +113,7 @@ sc_controller_start(struct sc_controller *controller) {
     bool ok = sc_thread_create(&controller->thread, run_controller,
                                "scrcpy-ctl", controller);
     if (!ok) {
-        LOGC("Could not start controller thread");
+        LOGE("Could not start controller thread");
         return false;
     }
 

app/src/demuxer.c

@@ -276,7 +276,7 @@ sc_demuxer_start(struct sc_demuxer *demuxer) {
     bool ok = sc_thread_create(&demuxer->thread, run_demuxer, "scrcpy-demuxer",
                                demuxer);
     if (!ok) {
-        LOGC("Could not start demuxer thread");
+        LOGE("Could not start demuxer thread");
         return false;
     }
     return true;

app/src/file_pusher.c

@@ -156,7 +156,7 @@ sc_file_pusher_start(struct sc_file_pusher *fp) {
 
     bool ok = sc_thread_create(&fp->thread, run_file_pusher, "scrcpy-file", fp);
     if (!ok) {
-        LOGC("Could not start file_pusher thread");
+        LOGE("Could not start file_pusher thread");
         return false;
     }
 

app/src/receiver.c

@@ -114,7 +114,7 @@ receiver_start(struct receiver *receiver) {
     bool ok = sc_thread_create(&receiver->thread, run_receiver,
                                "scrcpy-receiver", receiver);
     if (!ok) {
-        LOGC("Could not start receiver thread");
+        LOGE("Could not start receiver thread");
         return false;
     }
 

app/src/recorder.c

@@ -290,7 +290,7 @@ sc_recorder_open(struct sc_recorder *recorder, const AVCodec *input_codec) {
     ok = sc_thread_create(&recorder->thread, run_recorder, "scrcpy-recorder",
                           recorder);
     if (!ok) {
-        LOGC("Could not start recorder thread");
+        LOGE("Could not start recorder thread");
         goto error_avio_close;
     }
 

app/src/scrcpy.c

@@ -269,7 +269,7 @@ scrcpy(struct scrcpy_options *options) {
 
     // Minimal SDL initialization
     if (SDL_Init(SDL_INIT_EVENTS)) {
-        LOGC("Could not initialize SDL: %s", SDL_GetError());
+        LOGE("Could not initialize SDL: %s", SDL_GetError());
         return false;
     }
 
@@ -341,7 +341,7 @@ scrcpy(struct scrcpy_options *options) {
 
     // Initialize SDL video in addition if display is enabled
     if (options->display && SDL_Init(SDL_INIT_VIDEO)) {
-        LOGC("Could not initialize SDL: %s", SDL_GetError());
+        LOGE("Could not initialize SDL: %s", SDL_GetError());
         goto end;
     }
 

app/src/screen.c

@@ -423,14 +423,14 @@ sc_screen_init(struct sc_screen *screen,
     screen->window =
         SDL_CreateWindow(params->window_title, 0, 0, 0, 0, window_flags);
     if (!screen->window) {
-        LOGC("Could not create window: %s", SDL_GetError());
+        LOGE("Could not create window: %s", SDL_GetError());
         goto error_destroy_fps_counter;
     }
 
     screen->renderer = SDL_CreateRenderer(screen->window, -1,
                                           SDL_RENDERER_ACCELERATED);
     if (!screen->renderer) {
-        LOGC("Could not create renderer: %s", SDL_GetError());
+        LOGE("Could not create renderer: %s", SDL_GetError());
         goto error_destroy_window;
     }
 
@@ -479,7 +479,7 @@ sc_screen_init(struct sc_screen *screen,
                                                   params->frame_size.height);
     screen->texture = create_texture(screen);
     if (!screen->texture) {
-        LOGC("Could not create texture: %s", SDL_GetError());
+        LOGE("Could not create texture: %s", SDL_GetError());
         goto error_destroy_renderer;
     }
 
@@ -666,7 +666,7 @@ prepare_for_frame(struct sc_screen *screen, struct sc_size new_frame_size) {
                      screen->frame_size.width, screen->frame_size.height);
         screen->texture = create_texture(screen);
         if (!screen->texture) {
-            LOGC("Could not create texture: %s", SDL_GetError());
+            LOGE("Could not create texture: %s", SDL_GetError());
             return false;
         }
     }

app/src/sys/unix/process.c

@@ -176,7 +176,7 @@ sc_process_execute_p(const char *const argv[], sc_pid *pid, unsigned flags,
 bool
 sc_process_terminate(pid_t pid) {
     if (pid <= 0) {
-        LOGC("Requested to kill %d, this is an error. Please report the bug.\n",
+        LOGE("Requested to kill %d, this is an error. Please report the bug.\n",
              (int) pid);
         abort();
     }

app/src/usb/aoa_hid.c

@@ -278,7 +278,7 @@ sc_aoa_start(struct sc_aoa *aoa) {
 
     bool ok = sc_thread_create(&aoa->thread, run_aoa_thread, "scrcpy-aoa", aoa);
     if (!ok) {
-        LOGC("Could not start AOA thread");
+        LOGE("Could not start AOA thread");
         return false;
     }
 

app/src/usb/scrcpy_otg.c

@@ -56,7 +56,7 @@ scrcpy_otg(struct scrcpy_options *options) {
 
     // Minimal SDL initialization
     if (SDL_Init(SDL_INIT_EVENTS)) {
-        LOGC("Could not initialize SDL: %s", SDL_GetError());
+        LOGE("Could not initialize SDL: %s", SDL_GetError());
         return false;
     }
 

app/src/util/log.h

@@ -15,10 +15,9 @@
 #define LOGI(...) SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION, __VA_ARGS__)
 #define LOGW(...) SDL_LogWarn(SDL_LOG_CATEGORY_APPLICATION, __VA_ARGS__)
 #define LOGE(...) SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, __VA_ARGS__)
-#define LOGC(...) SDL_LogCritical(SDL_LOG_CATEGORY_APPLICATION, __VA_ARGS__)
 
 #define LOG_OOM() \
-    LOGC("OOM: %s:%d %s()", __FILE__, __LINE__, __func__)
+    LOGE("OOM: %s:%d %s()", __FILE__, __LINE__, __func__)
 
 void
 sc_set_log_level(enum sc_log_level level);

app/src/util/net.c

@@ -33,7 +33,7 @@ net_init(void) {
     WSADATA wsa;
     int res = WSAStartup(MAKEWORD(2, 2), &wsa) < 0;
     if (res < 0) {
-        LOGC("WSAStartup failed with error %d", res);
+        LOGE("WSAStartup failed with error %d", res);
         return false;
     }
 #endif

app/src/util/thread.c

@@ -54,7 +54,7 @@ sc_mutex_lock(sc_mutex *mutex) {
     int r = SDL_LockMutex(mutex->mutex);
 #ifndef NDEBUG
     if (r) {
-        LOGC("Could not lock mutex: %s", SDL_GetError());
+        LOGE("Could not lock mutex: %s", SDL_GetError());
         abort();
     }
 
@@ -74,7 +74,7 @@ sc_mutex_unlock(sc_mutex *mutex) {
     int r = SDL_UnlockMutex(mutex->mutex);
 #ifndef NDEBUG
     if (r) {
-        LOGC("Could not lock mutex: %s", SDL_GetError());
+        LOGE("Could not lock mutex: %s", SDL_GetError());
         abort();
     }
 #else
@@ -118,7 +118,7 @@ sc_cond_wait(sc_cond *cond, sc_mutex *mutex) {
     int r = SDL_CondWait(cond->cond, mutex->mutex);
 #ifndef NDEBUG
     if (r) {
-        LOGC("Could not wait on condition: %s", SDL_GetError());
+        LOGE("Could not wait on condition: %s", SDL_GetError());
         abort();
     }
 
@@ -140,7 +140,7 @@ sc_cond_timedwait(sc_cond *cond, sc_mutex *mutex, sc_tick deadline) {
     int r = SDL_CondWaitTimeout(cond->cond, mutex->mutex, ms);
 #ifndef NDEBUG
     if (r < 0) {
-        LOGC("Could not wait on condition with timeout: %s", SDL_GetError());
+        LOGE("Could not wait on condition with timeout: %s", SDL_GetError());
         abort();
     }
 
@@ -156,7 +156,7 @@ sc_cond_signal(sc_cond *cond) {
     int r = SDL_CondSignal(cond->cond);
 #ifndef NDEBUG
     if (r) {
-        LOGC("Could not signal a condition: %s", SDL_GetError());
+        LOGE("Could not signal a condition: %s", SDL_GetError());
         abort();
     }
 #else
@@ -169,7 +169,7 @@ sc_cond_broadcast(sc_cond *cond) {
     int r = SDL_CondBroadcast(cond->cond);
 #ifndef NDEBUG
     if (r) {
-        LOGC("Could not broadcast a condition: %s", SDL_GetError());
+        LOGE("Could not broadcast a condition: %s", SDL_GetError());
         abort();
     }
 #else

app/src/v4l2_sink.c

@@ -274,7 +274,7 @@ sc_v4l2_sink_open(struct sc_v4l2_sink *vs) {
     LOGD("Starting v4l2 thread");
     ok = sc_thread_create(&vs->thread, run_v4l2_sink, "scrcpy-v4l2", vs);
     if (!ok) {
-        LOGC("Could not start v4l2 thread");
+        LOGE("Could not start v4l2 thread");
         goto error_av_packet_free;
     }