1 files changed, 51 insertions, 0 deletions
diff --git a/video/out/bitmap_packer.h b/video/out/bitmap_packer.h
new file mode 100644
index 0000000..97bf88f
--- /dev/null
+++ b/video/out/bitmap_packer.h
@@ -0,0 +1,51 @@
+#ifndef MPLAYER_PACK_RECTANGLES_H
+#define MPLAYER_PACK_RECTANGLES_H
+
+struct pos {
+    int x;
+    int y;
+};
+
+struct bitmap_packer {
+    int w;
+    int h;
+    int w_max;
+    int h_max;
+    int padding;
+    int count;
+    struct pos *in;
+    struct pos *result;
+    int used_width;
+    int used_height;
+
+    // internal
+    int *scratch;
+    int asize;
+};
+
+struct sub_bitmaps;
+
+// Clear all internal state. Leave the following fields: w_max, h_max
+void packer_reset(struct bitmap_packer *packer);
+
+// Get the bounding box used for bitmap data (including padding).
+// The bounding box doesn't exceed (0,0)-(packer->w,packer->h).
+void packer_get_bb(struct bitmap_packer *packer, struct pos out_bb[2]);
+
+/* Reallocate packer->in for at least to desired number of items.
+ * Also sets packer->count to the same value.
+ */
+void packer_set_size(struct bitmap_packer *packer, int size);
+
+/* To use this, set packer->count to number of rectangles, w_max and h_max
+ * to maximum output rectangle size, and w and h to start size (may be 0).
+ * Write input sizes in packer->in.
+ * Resulting packing will be written in packer->result.
+ * w and h will be increased if necessary for successful packing.
+ * There is a strong guarantee that w and h will be powers of 2 (or set to 0).
+ * Return value is -1 if packing failed because w and h were set to max
+ * values but that wasn't enough, 1 if w or h was increased, and 0 otherwise.
+ */
+int packer_pack(struct bitmap_packer *packer);
+
+#endif