1 files changed, 32 insertions, 0 deletions
diff --git a/filters/f_hwtransfer.h b/filters/f_hwtransfer.h
new file mode 100644
index 0000000000..4595cb393d
--- /dev/null
+++ b/filters/f_hwtransfer.h
@@ -0,0 +1,32 @@
+#pragma once
+
+#include "filter.h"
+
+// A filter which uploads sw frames to hw. Ignores hw frames.
+struct mp_hwupload {
+    struct mp_filter *f;
+
+    // Hardware wrapper format, e.g. IMGFMT_VAAPI.
+    int hw_imgfmt;
+
+    // List of supported underlying surface formats.
+    int *fmts;
+    int num_fmts;
+    // List of supported upload image formats. May contain duplicate entries
+    // (which should be ignored).
+    int *upload_fmts;
+    int num_upload_fmts;
+    // For fmts[n], fmt_upload_index[n] gives the index of the first supported
+    // upload format in upload_fmts[], and fmt_upload_num[n] gives the number
+    // of formats at this position.
+    int *fmt_upload_index;
+    int *fmt_upload_num;
+};
+
+struct mp_hwupload *mp_hwupload_create(struct mp_filter *parent, int hw_imgfmt);
+
+// Return the best format suited for upload that is supported for a given input
+// imgfmt. This returns the same as imgfmt if the format is natively supported,
+// and otherwise a format that likely results in the least loss.
+// Returns 0 if completely unsupported.
+int mp_hwupload_find_upload_format(struct mp_hwupload *u, int imgfmt);