command: add property to scale window size

4 files changed, 51 insertions, 0 deletions

diff --git a/DOCS/man/en/input.rst b/DOCS/man/en/input.rst
index c2ba45a61c..67dbac07bf 100644
--- a/DOCS/man/en/input.rst
+++ b/DOCS/man/en/input.rst
@@ -533,6 +533,7 @@ Name                            W Comment
 ``fps``                           container FPS (may contain bogus values)
 ``dwidth``                        video width (after filters and aspect scaling)
 ``dheight``                       video height
+``window-scale``                x window size multiplier (1 means video size)
 ``aspect``                      x video aspect
 ``osd-width``                     last known OSD width (can be 0)
 ``osd-height``                    last known OSD height (can be 0)
diff --git a/mpvcore/player/command.c b/mpvcore/player/command.c
index 29352ee3f3..f393318fb6 100644
--- a/mpvcore/player/command.c
+++ b/mpvcore/player/command.c
@@ -1468,6 +1468,39 @@ static int mp_property_dheight(m_option_t *prop, int action, void *arg,
     return property_vo_wh(prop, action, arg, mpctx, false);
 }
 
+static int mp_property_window_scale(m_option_t *prop, int action, void *arg,
+                                    MPContext *mpctx)
+{
+    struct vo *vo = mpctx->video_out;
+    if (!vo || !vo->hasframe)
+        return M_PROPERTY_UNAVAILABLE;
+
+    int vid_w = vo->aspdat.prew;
+    int vid_h = vo->aspdat.preh;
+    if (vid_w < 1 || vid_h < 1)
+        return M_PROPERTY_UNAVAILABLE;
+
+    switch (action) {
+    case M_PROPERTY_SET: {
+        double scale = *(double *)arg;
+        int s[2] = {vid_w * scale, vid_h * scale};
+        if (s[0] > 0 && s[1] > 0 && vo_control(vo, VOCTRL_SET_WINDOW_SIZE, s) > 0)
+            return M_PROPERTY_OK;
+        return M_PROPERTY_UNAVAILABLE;
+    }
+    case M_PROPERTY_GET: {
+        int s[2];
+        if (vo_control(vo, VOCTRL_GET_WINDOW_SIZE, s) <= 0 || s[0] < 1 || s[1] < 1)
+            return M_PROPERTY_UNAVAILABLE;
+        double xs = (double)s[0] / vid_w;
+        double ys = (double)s[1] / vid_h;
+        *(double *)arg = (xs + ys) / 2;
+        return M_PROPERTY_OK;
+    }
+    }
+    return M_PROPERTY_NOT_IMPLEMENTED;
+}
+
 static int mp_property_osd_w(m_option_t *prop, int action, void *arg,
                              MPContext *mpctx)
 {
@@ -1901,6 +1934,8 @@ static const m_option_t mp_properties[] = {
       0, 0, 0, NULL },
     { "dwidth", mp_property_dwidth, CONF_TYPE_INT },
     { "dheight", mp_property_dheight, CONF_TYPE_INT },
+    { "window-scale", mp_property_window_scale, CONF_TYPE_DOUBLE,
+      CONF_RANGE, 0.125, 8 },
     { "fps", mp_property_fps, CONF_TYPE_FLOAT,
       0, 0, 0, NULL },
     { "aspect", mp_property_aspect, CONF_TYPE_FLOAT,
diff --git a/video/out/vo.h b/video/out/vo.h
index 1777245c96..d9058b96e9 100644
--- a/video/out/vo.h
+++ b/video/out/vo.h
@@ -71,6 +71,8 @@ enum mp_voctrl {
 
     VOCTRL_UPDATE_SCREENINFO,
     VOCTRL_WINDOW_TO_OSD_COORDS,        // float[2] (x/y)
+    VOCTRL_GET_WINDOW_SIZE,             // int[2] (w/h)
+    VOCTRL_SET_WINDOW_SIZE,             // int[2] (w/h)
 
     VOCTRL_SET_YUV_COLORSPACE,          // struct mp_csp_details*
     VOCTRL_GET_YUV_COLORSPACE,          // struct mp_csp_details*
diff --git a/video/out/x11_common.c b/video/out/x11_common.c
index 185350591f..fff74c3b2c 100644
--- a/video/out/x11_common.c
+++ b/video/out/x11_common.c
@@ -1486,6 +1486,19 @@ int vo_x11_control(struct vo *vo, int *events, int request, void *arg)
     case VOCTRL_UPDATE_SCREENINFO:
         vo_x11_update_screeninfo(vo);
         return VO_TRUE;
+    case VOCTRL_GET_WINDOW_SIZE: {
+        int *s = arg;
+        if (!x11->window)
+            return VO_FALSE;
+        s[0] = x11->win_width;
+        s[1] = x11->win_height;
+        return VO_TRUE;
+    }
+    case VOCTRL_SET_WINDOW_SIZE: {
+        int *s = arg;
+        vo_x11_highlevel_resize(vo, x11->win_x, x11->win_y, s[0], s[1]);
+        return VO_TRUE;
+    }
     case VOCTRL_SET_CURSOR_VISIBILITY:
         vo_set_cursor_hidden(vo, !(*(bool *)arg));
         return VO_TRUE;