video: make it possible to always override hardware decoding format

Mostly an obscure option for testing. But --videotoolbox-format can be
deprecated, as it becomes redundant.

We rely on the libavutil hwcontext implementation to reject invalid
pixfmts, or not to blow up if they are incompatible.

1 files changed, 1 insertions, 0 deletions

diff --git a/options/options.h b/options/options.h
index 3bb2a0a311..e56ed7d619 100644
--- a/options/options.h
+++ b/options/options.h
@@ -292,6 +292,7 @@ typedef struct MPOpts {
     int hwdec_api;
     char *hwdec_codecs;
     int videotoolbox_format;
+    int hwdec_image_format;
 
     int w32_priority;