diff --git a/libmpcodecs/vf_ass.c b/libmpcodecs/vf_ass.c
index 937912313b..77248b49c0 100644
--- a/libmpcodecs/vf_ass.c
+++ b/libmpcodecs/vf_ass.c
@@ -35,6 +35,7 @@
 #include "mp_image.h"
 #include "vf.h"
 #include "sub/sub.h"
+#include "sub/dec_sub.h"
 
 #include "libvo/fastmemcpy.h"
 
diff --git a/libvo/bitmap_packer.c b/libvo/bitmap_packer.c
index 9d3df70c34..603a6ce410 100644
--- a/libvo/bitmap_packer.c
+++ b/libvo/bitmap_packer.c
@@ -28,7 +28,6 @@
 #include "bitmap_packer.h"
 #include "mp_msg.h"
 #include "mpcommon.h"
-#include "sub/ass_mp.h"
 #include "sub/dec_sub.h"
 #include "fastmemcpy.h"
 
diff --git a/libvo/vo_corevideo.m b/libvo/vo_corevideo.m
index 37a16fec5e..e5c74f6cc8 100644
--- a/libvo/vo_corevideo.m
+++ b/libvo/vo_corevideo.m
@@ -333,7 +333,7 @@ static int control(struct vo *vo, uint32_t request, void *data)
             return mpgl_osd_query_format(p->osd, *(int *)data)
                    ? VO_TRUE : VO_NOTIMPL;
         case VOCTRL_GET_EOSD_RES: {
-            mp_eosd_res_t *r = data;
+            struct mp_eosd_res *r = data;
             r->w = vo->dwidth;
             r->h = vo->dheight;
             r->mt = r->mb = r->ml = r->mr = 0;
diff --git a/libvo/vo_gl.c b/libvo/vo_gl.c
index 7ad5fe31e3..d41adad6bc 100644
--- a/libvo/vo_gl.c
+++ b/libvo/vo_gl.c
@@ -42,7 +42,6 @@
 #include "gl_osd.h"
 #include "aspect.h"
 #include "fastmemcpy.h"
-#include "sub/ass_mp.h"
 
 //for gl_priv.use_yuv
 #define MASK_ALL_YUV (~(1 << YUV_CONVERSION_NONE))
@@ -1096,7 +1095,7 @@ static int control(struct vo *vo, uint32_t request, void *data)
     case VOCTRL_QUERY_EOSD_FORMAT:
         return mpgl_osd_query_format(p->osd, *(int *)data) ? VO_TRUE : VO_NOTIMPL;
     case VOCTRL_GET_EOSD_RES: {
-        mp_eosd_res_t *r = data;
+        struct mp_eosd_res *r = data;
         r->w = vo->dwidth;
         r->h = vo->dheight;
         r->mt = r->mb = r->ml = r->mr = 0;
diff --git a/libvo/vo_gl3.c b/libvo/vo_gl3.c
index 66324281ba..f3c1767b78 100644
--- a/libvo/vo_gl3.c
+++ b/libvo/vo_gl3.c
@@ -54,7 +54,6 @@
 #include "filter_kernels.h"
 #include "aspect.h"
 #include "fastmemcpy.h"
-#include "sub/ass_mp.h"
 
 static const char vo_gl3_shaders[] =
 // Generated from libvo/vo_gl3_shaders.glsl
@@ -1689,7 +1688,7 @@ static int control(struct vo *vo, uint32_t request, void *data)
         draw_eosd(p, data);
         return VO_TRUE;
     case VOCTRL_GET_EOSD_RES: {
-        mp_eosd_res_t *r = data;
+        struct mp_eosd_res *r = data;
         r->w = vo->dwidth;
         r->h = vo->dheight;
         r->ml = r->mr = p->border_x;
diff --git a/libvo/vo_vdpau.c b/libvo/vo_vdpau.c
index 1e587810ac..34aa9824dc 100644
--- a/libvo/vo_vdpau.c
+++ b/libvo/vo_vdpau.c
@@ -51,7 +51,6 @@
 #include "libmpcodecs/vfcap.h"
 #include "libmpcodecs/mp_image.h"
 #include "osdep/timer.h"
-#include "sub/ass_mp.h"
 #include "bitmap_packer.h"
 
 #define WRAP_ADD(x, a, m) ((a) < 0 \
@@ -984,7 +983,7 @@ static void draw_eosd(struct vo *vo, int index)
     }
 }
 
-static void generate_eosd(struct vo *vo, mp_eosd_images_t *imgs)
+static void generate_eosd(struct vo *vo, struct sub_bitmaps *imgs)
 {
     struct vdpctx *vc = vo->priv;
     struct vdp_functions *vdp = vc->vdp;
@@ -1617,7 +1616,7 @@ static int control(struct vo *vo, uint32_t request, void *data)
         if (!data)
             return VO_FALSE;
         if (status_ok(vo)) {
-            mp_eosd_images_t *imgs = data;
+            struct sub_bitmaps *imgs = data;
             generate_eosd(vo, imgs);
             draw_eosd(vo, imgs->render_index);
         }
diff --git a/sub/dec_sub.h b/sub/dec_sub.h
index 442cd870d8..9cfe8d964c 100644
--- a/sub/dec_sub.h
+++ b/sub/dec_sub.h
@@ -4,61 +4,11 @@
 #include <stdbool.h>
 #include <stdint.h>
 
+#include "sub.h"
+
 struct sh_sub;
-struct osd_state;
 struct ass_track;
-
-enum sub_bitmap_format {
-    SUBBITMAP_EMPTY = 0,// no bitmaps; always has num_parts==0
-    SUBBITMAP_LIBASS,   // A8, with a per-surface blend color (libass.color)
-    SUBBITMAP_RGBA,     // B8G8R8A8, can be scaled
-    SUBBITMAP_OLD,      // I8A8 (monochrome), premultiplied alpha
-    SUBBITMAP_OLD_PLANAR, // like previous, but bitmap points to old_osd_planar
-
-    SUBBITMAP_COUNT
-};
-
-// For SUBBITMAP_OLD_PANAR
-struct old_osd_planar {
-    unsigned char *bitmap;
-    unsigned char *alpha;
-};
-
-typedef struct mp_eosd_res {
-    int w, h; // screen dimensions, including black borders
-    int mt, mb, ml, mr; // borders (top, bottom, left, right)
-} mp_eosd_res_t;
-
-struct sub_bitmap {
-    void *bitmap;
-    int stride;
-    int w, h;
-    int x, y;
-    // Note: not clipped, going outside the screen area is allowed
-    int dw, dh;
-
-    union {
-        struct {
-            uint32_t color;
-        } libass;
-    };
-};
-
-typedef struct sub_bitmaps {
-    int render_index;   // for VO cache state (limited by MAX_OSD_PARTS)
-
-    enum sub_bitmap_format format;
-    bool scaled;        // if false, dw==w && dh==h
-
-    struct sub_bitmap *parts;
-    int num_parts;
-
-    // Provided for VOs with old code
-    struct ass_image *imgs;
-
-    // Incremented on each change
-    int bitmap_id, bitmap_pos_id;
-} mp_eosd_images_t;
+struct MPOpts *opts;
 
 struct sub_render_params {
     double pts;
diff --git a/sub/osd_libass.c b/sub/osd_libass.c
index 811bc009f3..f3296c6091 100644
--- a/sub/osd_libass.c
+++ b/sub/osd_libass.c
@@ -196,7 +196,7 @@ static void update_progbar(struct osd_state *osd, struct osd_object *obj)
     // Assume the OSD bar takes 2/3 of the OSD width at PlayResY=288 and
     // FontSize=22 with an OSD aspect ratio of 16:9. Rescale as needed.
     // xxx can fail when unknown fonts are involved
-    double asp = (double)osd->w / osd->h;
+    double asp = (double)osd->res.w / osd->res.h;
     double scale = (asp / 1.77777) * (obj->osd_track->PlayResY / 288.0);
     style->ScaleX = style->ScaleY = scale;
     style->FontSize = 22.0;
@@ -285,7 +285,7 @@ void osd_object_get_bitmaps(struct osd_state *osd, struct osd_object *obj,
     if (!obj->osd_track)
         return;
 
-    ass_set_frame_size(osd->osd_render, osd->w, osd->h);
+    ass_set_frame_size(osd->osd_render, osd->res.w, osd->res.h);
     mp_ass_render_frame(osd->osd_render, obj->osd_track, 0,
                         &obj->parts_cache, out_imgs);
     talloc_steal(obj, obj->parts_cache);
diff --git a/sub/sd_ass.c b/sub/sd_ass.c
index fca47c557b..44c91c6fdc 100644
--- a/sub/sd_ass.c
+++ b/sub/sd_ass.c
@@ -28,6 +28,7 @@
 #include "mp_msg.h"
 #include "libmpdemux/stheader.h"
 #include "sub.h"
+#include "dec_sub.h"
 #include "ass_mp.h"
 #include "sd.h"
 #include "subassconvert.h"
diff --git a/sub/sd_lavc.c b/sub/sd_lavc.c
index 7f327957dd..a10ac5e18e 100644
--- a/sub/sd_lavc.c
+++ b/sub/sd_lavc.c
@@ -25,6 +25,7 @@
 #include "sd.h"
 #include "spudec.h"
 // Current code still pushes subs directly to global spudec
+#include "dec_sub.h"
 #include "sub.h"
 
 struct sd_lavc_priv {
diff --git a/sub/sub.c b/sub/sub.c
index 600ef6fae1..b2d9eb82fc 100644
--- a/sub/sub.c
+++ b/sub/sub.c
@@ -35,7 +35,7 @@
 #include "mp_msg.h"
 #include "libvo/video_out.h"
 #include "sub.h"
-#include "sub/ass_mp.h"
+#include "dec_sub.h"
 #include "img_convert.h"
 #include "spudec.h"
 
@@ -92,9 +92,11 @@ static struct osd_state *global_osd;
 
 static void osd_update_ext(struct osd_state *osd, struct mp_eosd_res res)
 {
-    if (osd->w != res.w || osd->h != res.h) {
-        osd->w = res.w;
-        osd->h = res.h;
+    struct mp_eosd_res old = osd->res;
+    if (old.w != res.w || old.h != res.h || old.ml != res.ml || old.mt != res.mt
+        || old.mr != res.mr || old.mb != res.mb)
+    {
+        osd->res = res;
         for (int n = 0; n < MAX_OSD_PARTS; n++)
             osd->objs[n]->force_redraw = true;
     }
@@ -171,7 +173,7 @@ static bool render_object(struct osd_state *osd, struct osd_object *obj,
     if (obj->type == OSDTYPE_SPU) {
         *out_imgs = (struct sub_bitmaps) {0};
         if (spu_visible(osd, obj))
-            spudec_get_bitmap(vo_spudec, osd->w, osd->h, out_imgs);
+            spudec_get_bitmap(vo_spudec, osd->res.w, osd->res.h, out_imgs);
         // Normal change-detection (sub. dec. calls vo_osd_changed(OSDTYPE_SPU))
         if (obj->force_redraw) {
             out_imgs->bitmap_id++;
@@ -269,7 +271,7 @@ bool osd_draw_sub(struct osd_state *osd, struct sub_bitmaps *out_imgs,
 
 void draw_osd_with_eosd(struct vo *vo, struct osd_state *osd)
 {
-    mp_eosd_res_t dim = {0};
+    struct mp_eosd_res dim = {0};
     if (vo_control(vo, VOCTRL_GET_EOSD_RES, &dim) != VO_TRUE)
         return;
 
diff --git a/sub/sub.h b/sub/sub.h
index ed3010c1af..6a83036460 100644
--- a/sub/sub.h
+++ b/sub/sub.h
@@ -20,11 +20,64 @@
 #define MPLAYER_SUB_H
 
 #include <stdbool.h>
+#include <stdint.h>
 
 #include "subreader.h"
-#include "dec_sub.h"
 
 struct vo;
+struct sub_render_params;
+
+enum sub_bitmap_format {
+    SUBBITMAP_EMPTY = 0,// no bitmaps; always has num_parts==0
+    SUBBITMAP_LIBASS,   // A8, with a per-surface blend color (libass.color)
+    SUBBITMAP_RGBA,     // B8G8R8A8, can be scaled
+    SUBBITMAP_OLD,      // I8A8 (monochrome), premultiplied alpha
+    SUBBITMAP_OLD_PLANAR, // like previous, but bitmap points to old_osd_planar
+
+    SUBBITMAP_COUNT
+};
+
+// For SUBBITMAP_OLD_PANAR
+struct old_osd_planar {
+    unsigned char *bitmap;
+    unsigned char *alpha;
+};
+
+struct sub_bitmap {
+    void *bitmap;
+    int stride;
+    int w, h;
+    int x, y;
+    // Note: not clipped, going outside the screen area is allowed
+    int dw, dh;
+
+    union {
+        struct {
+            uint32_t color;
+        } libass;
+    };
+};
+
+struct sub_bitmaps {
+    int render_index;   // for VO cache state (limited by MAX_OSD_PARTS)
+
+    enum sub_bitmap_format format;
+    bool scaled;        // if false, dw==w && dh==h
+
+    struct sub_bitmap *parts;
+    int num_parts;
+
+    // Provided for VOs with old code
+    struct ass_image *imgs;
+
+    // Incremented on each change
+    int bitmap_id, bitmap_pos_id;
+};
+
+struct mp_eosd_res {
+    int w, h; // screen dimensions, including black borders
+    int mt, mb, ml, mr; // borders (top, bottom, left, right)
+};
 
 enum mp_osdtype {
     OSDTYPE_SUB,
@@ -71,7 +124,7 @@ struct osd_state {
 
     bool render_subs_in_filter;
 
-    int w, h;
+    struct mp_eosd_res res;
 
     char *osd_text;             // OSDTYPE_OSD
     int progbar_type, progbar_value; // OSDTYPE_PROGBAR