player: add internal `vo-resize` command

Intended to be used with the properties from previous commit.

7 files changed, 19 insertions, 2 deletions

diff --git a/DOCS/man/input.rst b/DOCS/man/input.rst
index b67b490d8b..2294197368 100644
--- a/DOCS/man/input.rst
+++ b/DOCS/man/input.rst
@@ -732,7 +732,7 @@ Input Commands that are Possibly Subject to Change
     Load a script, similar to the ``--script`` option.
 
 Undocumented commands: ``tv-last-channel`` (TV/DVB only),
-``ao-reload`` (experimental/internal).
+``ao-reload``, ``vo-resize`` (experimental/internal).
 
 Hooks
 ~~~~~
diff --git a/DOCS/man/options.rst b/DOCS/man/options.rst
index 3a2c1a9fc4..e76f5a115a 100644
--- a/DOCS/man/options.rst
+++ b/DOCS/man/options.rst
@@ -4744,7 +4744,8 @@ The following video options are currently all specific to ``--vo=gpu`` and
 ``--android-surface-width=<number>``
 ``--android-surface-height=<number>``
     Set dimensions of the rendering surface used by the Android gpu context.
-    Needs to be set by the embedding application.
+    Needs to be set by the embedding application. Setting these does not re-
+    configure the vo, thus ``vo-resize`` should be called afterwards.
 
     Android with ``--gpu-context=android`` only.
 
diff --git a/input/cmd_list.c b/input/cmd_list.c
index 333f2cb223..44cd65fbce 100644
--- a/input/cmd_list.c
+++ b/input/cmd_list.c
@@ -191,6 +191,7 @@ const struct mp_cmd_def mp_cmds[] = {
 
   { MP_CMD_VF, "vf", { ARG_STRING, ARG_STRING } },
   { MP_CMD_VF_COMMAND, "vf-command", { ARG_STRING, ARG_STRING, ARG_STRING } },
+  { MP_CMD_VO_RESIZE, "vo-resize", },
 
   { MP_CMD_SCRIPT_BINDING, "script-binding", { ARG_STRING },
     .allow_auto_repeat = true, .on_updown = true},
diff --git a/input/cmd_list.h b/input/cmd_list.h
index 6590158c31..6b1b19795c 100644
--- a/input/cmd_list.h
+++ b/input/cmd_list.h
@@ -99,6 +99,7 @@ enum mp_command_type {
     /// Video filter commands
     MP_CMD_VF,
     MP_CMD_VF_COMMAND,
+    MP_CMD_VO_RESIZE,
 
     /// Internal for Lua scripts
     MP_CMD_SCRIPT_BINDING,
diff --git a/player/command.c b/player/command.c
index 2d91c09435..6f2c15b047 100644
--- a/player/command.c
+++ b/player/command.c
@@ -5419,6 +5419,13 @@ int run_command(struct MPContext *mpctx, struct mp_cmd *cmd, struct mpv_node *re
         reload_audio_output(mpctx);
         break;
 
+    case MP_CMD_VO_RESIZE: {
+        if (!mpctx->video_out)
+            return -1;
+        vo_control(mpctx->video_out, VOCTRL_EXTERNAL_RESIZE, NULL);
+        break;
+    }
+
     case MP_CMD_AF:
         return edit_filters_osd(mpctx, STREAM_AUDIO, cmd->args[0].v.s,
                                 cmd->args[1].v.s, msg_osd);
diff --git a/video/out/vo.h b/video/out/vo.h
index 995d6b97f5..cc86a632e7 100644
--- a/video/out/vo.h
+++ b/video/out/vo.h
@@ -111,6 +111,9 @@ enum mp_voctrl {
     VOCTRL_GET_DISPLAY_FPS,             // double*
 
     VOCTRL_GET_PREF_DEINT,              // int*
+
+    /* private to vo_gpu */
+    VOCTRL_EXTERNAL_RESIZE,
 };
 
 // VOCTRL_SET_EQUALIZER
diff --git a/video/out/vo_gpu.c b/video/out/vo_gpu.c
index 95318d36df..c59be48bd0 100644
--- a/video/out/vo_gpu.c
+++ b/video/out/vo_gpu.c
@@ -207,6 +207,10 @@ static int control(struct vo *vo, uint32_t request, void *data)
     case VOCTRL_PERFORMANCE_DATA:
         gl_video_perfdata(p->renderer, (struct voctrl_performance_data *)data);
         return true;
+    case VOCTRL_EXTERNAL_RESIZE:
+        p->ctx->fns->reconfig(p->ctx);
+        resize(vo);
+        return true;
     }
 
     int events = 0;