Python: Add map view

include/mgba/core/map-cache.h

@@ -71,6 +71,7 @@ uint32_t mMapCacheTileId(struct mMapCache* cache, unsigned x, unsigned y);
 bool mMapCacheCheckTile(struct mMapCache* cache, const struct mMapCacheEntry* entry, unsigned x, unsigned y);
 void mMapCacheCleanTile(struct mMapCache* cache, struct mMapCacheEntry* entry, unsigned x, unsigned y);
 
+void mMapCacheCleanRow(struct mMapCache* cache, unsigned y);
 const color_t* mMapCacheGetRow(struct mMapCache* cache, unsigned y);
 
 CXX_GUARD_END

src/core/map-cache.c

@@ -171,6 +171,34 @@ bool mMapCacheCheckTile(struct mMapCache* cache, const struct mMapCacheEntry* en
 	return false;
 }
 
+void mMapCacheCleanRow(struct mMapCache* cache, unsigned y) {
+	// TODO: Cache
+	int tilesWide = 1 << mMapCacheSystemInfoGetTilesWide(cache->sysConfig);
+	int macroTile = (1 << mMapCacheSystemInfoGetMacroTileSize(cache->sysConfig)) - 1;
+	size_t stride = 8 << mMapCacheSystemInfoGetTilesWide(cache->sysConfig);
+	int location = 0;
+	int x;
+	for (x = 0; x < tilesWide; ++x) {
+		if (!(x & macroTile)) {
+			location = mMapCacheTileId(cache, x, y);
+		} else {
+			++location;
+		}
+		struct mMapCacheEntry* status = &cache->status[location];
+		if (!mMapCacheEntryFlagsIsVramClean(status->flags)) {
+			status->flags = mMapCacheEntryFlagsFillVramClean(status->flags);
+			cache->mapParser(cache, status, &cache->vram[cache->mapStart + (location << mMapCacheSystemInfoGetMapAlign(cache->sysConfig))]);
+		}
+		unsigned tileId = status->tileId + cache->tileStart;
+		if (tileId >= mTileCacheSystemInfoGetMaxTiles(cache->tileCache->sysConfig)) {
+			tileId = 0;
+		}
+		const color_t* tile = mTileCacheGetTile(cache->tileCache, tileId, mMapCacheEntryFlagsGetPaletteId(status->flags));
+		color_t* mapOut = &cache->cache[(y * stride + x) * 8];
+		_cleanTile(cache, tile, mapOut, status);
+	}
+}
+
 const color_t* mMapCacheGetRow(struct mMapCache* cache, unsigned y) {
 	size_t stride = 8 << mMapCacheSystemInfoGetTilesWide(cache->sysConfig);
 	return &cache->cache[y * stride];

src/platform/python/_builder.h

@@ -8,8 +8,14 @@
 
 #define ATTRIBUTE_FORMAT(X, Y, Z)
 #define DECL_BITFIELD(newtype, oldtype) typedef oldtype newtype
-#define DECL_BIT(type, name, bit)
-#define DECL_BITS(type, name, bit, nbits)
+#define DECL_BIT(type, field, bit) DECL_BITS(type, field, bit, 1)
+#define DECL_BITS(TYPE, FIELD, START, SIZE) \
+	TYPE TYPE ## Is ## FIELD (TYPE); \
+	TYPE TYPE ## Get ## FIELD (TYPE); \
+	TYPE TYPE ## Clear ## FIELD (TYPE); \
+	TYPE TYPE ## Fill ## FIELD (TYPE); \
+	TYPE TYPE ## Set ## FIELD (TYPE, TYPE); \
+	TYPE TYPE ## TestFill ## FIELD (TYPE, bool);
 
 #define CXX_GUARD_START
 #define CXX_GUARD_END
@@ -29,9 +35,10 @@ void free(void*);
 
 #include "flags.h"
 
-#include <mgba/core/core.h>
-#include <mgba/core/mem-search.h>
 #include <mgba/core/cache-set.h>
+#include <mgba/core/core.h>
+#include <mgba/core/map-cache.h>
+#include <mgba/core/mem-search.h>
 #include <mgba/core/thread.h>
 #include <mgba/core/version.h>
 

src/platform/python/_builder.py

@@ -17,14 +17,17 @@ if __name__ == "__main__":
 cppflags.extend(["-I" + incdir, "-I" + srcdir, "-I" + bindir])
 
 ffi.set_source("mgba._pylib", """
+#define static
+#define inline
 #include "flags.h"
 #define OPAQUE_THREADING
+#include <mgba/core/cache-set.h>
 #include <mgba-util/common.h>
 #include <mgba/core/core.h>
+#include <mgba/core/map-cache.h>
 #include <mgba/core/log.h>
 #include <mgba/core/mem-search.h>
 #include <mgba/core/thread.h>
-#include <mgba/core/cache-set.h>
 #include <mgba/core/version.h>
 #include <mgba/debugger/debugger.h>
 #include <mgba/internal/arm/arm.h>

src/platform/python/mgba/core.py

@@ -117,6 +117,14 @@ class Core(object):
             t.append(tile.TileView(lib.mTileCacheSetGetPointer(ts, i)))
         return t
 
+    @cached_property
+    def maps(self):
+        m = []
+        ms = ffi.addressof(self.graphicsCache.cache.maps)
+        for i in range(lib.mMapCacheSetSize(ms)):
+            m.append(tile.MapView(lib.mMapCacheSetGetPointer(ms, i)))
+        return m
+
     @classmethod
     def _init(cls, native):
         core = ffi.gc(native, native.deinit)

src/platform/python/mgba/tile.py

@@ -32,6 +32,27 @@ class TileView:
     def getTile(self, tile, palette):
         return Tile(lib.mTileCacheGetTile(self.cache, tile, palette))
 
+class MapView:
+    def __init__(self, cache):
+        self.cache = cache
+
+    @property
+    def width(self):
+        return 1 << lib.mMapCacheSystemInfoGetTilesWide(self.cache.sysConfig)
+
+    @property
+    def height(self):
+        return 1 << lib.mMapCacheSystemInfoGetTilesHigh(self.cache.sysConfig)
+
+    @property
+    def image(self):
+        i = image.Image(self.width * 8, self.height * 8, alpha=True)
+        for y in range(self.height * 8):
+            if not y & 7:
+                lib.mMapCacheCleanRow(self.cache, y >> 3)
+            row = lib.mMapCacheGetRow(self.cache, y)
+            ffi.memmove(ffi.addressof(i.buffer, i.stride * y), row, self.width * 8 * ffi.sizeof("color_t"))
+        return i
 
 class Sprite(object):
     def constitute(self, tileView, tilePitch):