---
libavcodec/qsv.h | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/libavcodec/qsv.h b/libavcodec/qsv.h
index 6532594..922b858 100644
--- a/libavcodec/qsv.h
+++ b/libavcodec/qsv.h
@@ -23,10 +23,29 @@
#include <mfx/mfxvideo.h>
+/**
+ * This struct is used for communicating QSV parameters between libavcodec and
+ * the caller. It is managed by the caller and must be assigned to
+ * AVCodecContext.hwaccel_context.
+ * - decoding: hwaccel_context must be set on return from the get_format()
+ * callback
+ * - encoding: hwaccel_context must be set before avcodec_open2()
+ */
typedef struct AVQSVContext {
+ /**
+ * If non-NULL, the session to use for encoding or decoding.
+ * Otherwise, libavcodec will try to create an internal session.
+ */
mfxSession session;
+
+ /**
+ * The IO pattern to use.
+ */
int iopattern;
+ /**
+ * Extra buffers to pass to encoder or decoder initialization.
+ */
mfxExtBuffer **ext_buffers;
int nb_ext_buffers;
} AVQSVContext;
--
2.0.0
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