commands, vd_ffmpeg: fix switch_ratio slave command

The implementation of the switch_ratio command was hacky and called
mpcodecs_config_vo() to reconfigure the filter/VO chain from under an
existing decoder. This call no longer worked properly with vd_ffmpeg
after that started using mpcodec_config_vo2(). Add new video decoder
control command VDCTRL_RESET_ASPECT and use this to tell vd_ffmpeg to
reinitialize the output chain properly.

1 files changed, 7 insertions, 0 deletions

diff --git a/libmpcodecs/dec_video.c b/libmpcodecs/dec_video.c
index 91b255114a..cd3083faa4 100644
--- a/libmpcodecs/dec_video.c
+++ b/libmpcodecs/dec_video.c
@@ -212,6 +212,13 @@ void resync_video_stream(sh_video_t *sh_video)
     sh_video->prev_sorted_pts = MP_NOPTS_VALUE;
 }
 
+void video_reset_aspect(struct sh_video *sh_video)
+{
+    int r = sh_video->vd_driver->control(sh_video, VDCTRL_RESET_ASPECT, NULL);
+    if (r != true)
+        mpcodecs_config_vo(sh_video, sh_video->disp_w, sh_video->disp_h, 0);
+}
+
 int get_current_video_decoder_lag(sh_video_t *sh_video)
 {
     const struct vd_functions *vd = sh_video->vd_driver;