Replace SDL types by C99 standard types

Scrcpy is a C11 project. Use the C99 standard types instead of the
SDL-specific types:

    SDL_bool -> bool
    SintXX   -> intXX_t
    UintXX   -> uintXX_t

app/src/recorder.c

@@ -26,7 +26,7 @@ find_muxer(const char *name) {
     return oformat;
 }
 
-SDL_bool
+bool
 recorder_init(struct recorder *recorder,
               const char *filename,
               enum recorder_format format,
@@ -34,14 +34,14 @@ recorder_init(struct recorder *recorder,
     recorder->filename = SDL_strdup(filename);
     if (!recorder->filename) {
         LOGE("Cannot strdup filename");
-        return SDL_FALSE;
+        return false;
     }
 
     recorder->format = format;
     recorder->declared_frame_size = declared_frame_size;
-    recorder->header_written = SDL_FALSE;
+    recorder->header_written = false;
 
-    return SDL_TRUE;
+    return true;
 }
 
 void
@@ -58,20 +58,20 @@ recorder_get_format_name(enum recorder_format format) {
     }
 }
 
-SDL_bool
+bool
 recorder_open(struct recorder *recorder, AVCodec *input_codec) {
     const char *format_name = recorder_get_format_name(recorder->format);
     SDL_assert(format_name);
     const AVOutputFormat *format = find_muxer(format_name);
     if (!format) {
         LOGE("Could not find muxer");
-        return SDL_FALSE;
+        return false;
     }
 
     recorder->ctx = avformat_alloc_context();
     if (!recorder->ctx) {
         LOGE("Could not allocate output context");
-        return SDL_FALSE;
+        return false;
     }
 
     // contrary to the deprecated API (av_oformat_next()), av_muxer_iterate()
@@ -83,7 +83,7 @@ recorder_open(struct recorder *recorder, AVCodec *input_codec) {
     AVStream *ostream = avformat_new_stream(recorder->ctx, input_codec);
     if (!ostream) {
         avformat_free_context(recorder->ctx);
-        return SDL_FALSE;
+        return false;
     }
 
 #ifdef SCRCPY_LAVF_HAS_NEW_CODEC_PARAMS_API
@@ -106,12 +106,12 @@ recorder_open(struct recorder *recorder, AVCodec *input_codec) {
         LOGE("Failed to open output file: %s", recorder->filename);
         // ostream will be cleaned up during context cleaning
         avformat_free_context(recorder->ctx);
-        return SDL_FALSE;
+        return false;
     }
 
     LOGI("Recording started to %s file: %s", format_name, recorder->filename);
 
-    return SDL_TRUE;
+    return true;
 }
 
 void
@@ -127,14 +127,14 @@ recorder_close(struct recorder *recorder) {
     LOGI("Recording complete to %s file: %s", format_name, recorder->filename);
 }
 
-static SDL_bool
+static bool
 recorder_write_header(struct recorder *recorder, AVPacket *packet) {
     AVStream *ostream = recorder->ctx->streams[0];
 
     uint8_t *extradata = av_malloc(packet->size * sizeof(uint8_t));
     if (!extradata) {
         LOGC("Cannot allocate extradata");
-        return SDL_FALSE;
+        return false;
     }
 
     // copy the first packet to the extra data
@@ -154,10 +154,10 @@ recorder_write_header(struct recorder *recorder, AVPacket *packet) {
         SDL_free(extradata);
         avio_closep(&recorder->ctx->pb);
         avformat_free_context(recorder->ctx);
-        return SDL_FALSE;
+        return false;
     }
 
-    return SDL_TRUE;
+    return true;
 }
 
 static void
@@ -166,14 +166,14 @@ recorder_rescale_packet(struct recorder *recorder, AVPacket *packet) {
     av_packet_rescale_ts(packet, SCRCPY_TIME_BASE, ostream->time_base);
 }
 
-SDL_bool
+bool
 recorder_write(struct recorder *recorder, AVPacket *packet) {
     if (!recorder->header_written) {
-        SDL_bool ok = recorder_write_header(recorder, packet);
+        bool ok = recorder_write_header(recorder, packet);
         if (!ok) {
-            return SDL_FALSE;
+            return false;
         }
-        recorder->header_written = SDL_TRUE;
+        recorder->header_written = true;
     }
 
     recorder_rescale_packet(recorder, packet);