Add helper in utils to create a SDL_Surface from data

Src/data_store.cpp

@@ -24,6 +24,7 @@ struct ds_data *DataStore::registerNetworkData(uint32_t key, uint32_t metadata,
 	out = (struct ds_data *)xmalloc(sizeof(struct ds_data) + data_sz);
 	out->key = key;
 	out->metadata = metadata;
+	out->sz = data_sz;
 
 	memcpy(out->data, data, data_sz);
 

Src/data_store.hh

@@ -9,6 +9,7 @@ struct ds_data
 {
 	uint32_t key;
 	uint32_t metadata; /* Type etc */
+	size_t   sz;
 	uint8_t  data[];
 };
 

Src/gui/game_info.cpp

@@ -216,7 +216,6 @@ struct game_info *GameInfo::dump()
 bool GameInfo::fromDump(struct game_info *gi)
 {
 	struct game_info *p = gi;
-	SDL_RWops *rw;
 
 	/* Demarshal */
 	switch (ntohs(p->version_magic))
@@ -239,13 +238,8 @@ bool GameInfo::fromDump(struct game_info *gi)
 	this->score = p->score;
 	this->year = p->year;
 
-	rw = SDL_RWFromMem(p->data + p->screenshot_off,
+	this->screenshot = sdl_surface_from_data(p->data + p->screenshot_off,
 			p->sz - p->screenshot_off);
-	if (!rw)
-		goto bail_out;
-
-	this->screenshot = IMG_Load_RW(rw, 0);
-	SDL_FreeRW(rw);
 	if (!this->screenshot)
 		goto bail_out;
 	free(p);

Src/utils.cpp

@@ -4,6 +4,7 @@
 #include <png.h>
 #include <sys/stat.h>
 #include <SDL_ttf.h>
+#include <SDL_image.h>
 
 #include <sysdeps.h>
 #include <C64.h>
@@ -270,6 +271,21 @@ void *sdl_surface_to_png(SDL_Surface *surf, size_t *out_sz)
 	return out.data;
 }
 
+SDL_Surface *sdl_surface_from_data(void *data, size_t sz)
+{
+	SDL_RWops *rw;
+	SDL_Surface *out;
+
+	rw = SDL_RWFromMem(data, sz);
+	if (!rw)
+		return NULL;
+
+	out = IMG_Load_RW(rw, 0);
+	SDL_FreeRW(rw);
+
+	return out;
+}
+
 void highlight_background(SDL_Surface *where, Font *font,
 		SDL_Surface *bg_left, SDL_Surface *bg_middle, SDL_Surface *bg_right,
 		int x, int y, int w, int h)

Src/utils.hh

@@ -78,6 +78,8 @@ const char **get_file_list(const char *base_dir, const char *exts[]);
 
 void *sdl_surface_to_png(SDL_Surface *src, size_t *out_sz);
 
+SDL_Surface *sdl_surface_from_data(void *data, size_t sz);
+
 void highlight_background(SDL_Surface *where, Font *font,
 		SDL_Surface *bg_left, SDL_Surface *bg_middle, SDL_Surface *bg_right,
 		int x, int y, int w, int h);