Adds ips/bps softpatching

Patches named like the content will be auto-applied in memory when the
game is loaded.

Example: /roms/game.gba will apply patches named /roms/game.ips,
/roms/game.ips1, /roms/game.IPS2, /roms/game.bps, etc. This only
happens in memory, original files are unmodified.

Patches are loaded in case-insensitive alphabetical order. Note that
.ips12 loads before .ips2, but after .ips02.

Only supports cores that load from memory (see libretro page at
https://docs.libretro.com/guides/softpatching/ for compatibility list)

1 files changed, 23 insertions, 0 deletions

diff --git a/content.h b/content.h
new file mode 100644
index 0000000..a57c039
--- /dev/null
+++ b/content.h
@@ -0,0 +1,23 @@
+#ifndef CONTENT_H
+#define CONTENT_H
+
+#include "libretro.h"
+#include "main.h"
+
+struct content {
+	const char path[MAX_PATH];
+
+	char *tmpfile;
+	void *data;
+	size_t size;
+};
+
+struct content *content_init(const char *path);
+void content_based_name(const struct content *content,
+                        char *buf, size_t len,
+                        const char *basedir, const char *subdir,
+                        const char *new_extension);
+int content_load_game_info(struct content *content, struct retro_game_info *info, bool needs_fullpath);
+void content_free(struct content *content);
+
+#endif