[FFmpeg-devel] [PATCH v10 09/13] lavu/hwcontext_qsv: add loader field to AVQSVDeviceContext

["Xiang, Haihao" <haihao.xiang-at-intel.com@ffmpeg.org>]

From: Haihao Xiang <haihao.xiang@intel.com>

In oneVPL, a valid mfxLoader handle is needed when creating mfx session
for decoding, encoding and processing[1], so add loader field to
AVQSVDeviceContext. User should fill this field before calling
av_hwdevice_ctx_init() if using oneVPL

This is in preparation for oneVPL support

[1]https://spec.oneapi.io/versions/latest/elements/oneVPL/source/programming_guide/VPL_prg_session.html#onevpl-dispatcher
---
 doc/APIchanges            |  3 +++
 libavutil/hwcontext_qsv.h | 11 +++++++++++
 libavutil/version.h       |  2 +-
 3 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/doc/APIchanges b/doc/APIchanges
index 20b944933a..1672aa0321 100644
--- a/doc/APIchanges
+++ b/doc/APIchanges
@@ -14,6 +14,9 @@ libavutil:     2021-04-27
 
 API changes, most recent first:
 
+2022-07-05 - xxxxxxxxxx - lavu 57.28.100 - hwcontext_qsv.h
+  Add loader field to AVQSVDeviceContext
+
 2022-06-12 - xxxxxxxxxx - lavf 59.25.100 - avio.h
   Add avio_vprintf(), similar to avio_printf() but allow to use it
   from within a function taking a variable argument list as input.
diff --git a/libavutil/hwcontext_qsv.h b/libavutil/hwcontext_qsv.h
index 42e34d0dda..e2dba8ad83 100644
--- a/libavutil/hwcontext_qsv.h
+++ b/libavutil/hwcontext_qsv.h
@@ -34,6 +34,17 @@
  */
 typedef struct AVQSVDeviceContext {
     mfxSession session;
+    /**
+     * The mfxLoader handle used for mfxSession creation
+     *
+     * This field is only available for oneVPL user. For non-oneVPL user, this
+     * field must be set to NULL.
+     *
+     * Filled by the user before calling av_hwdevice_ctx_init() and should be
+     * cast to mfxLoader handle. Deallocating the AVHWDeviceContext will always
+     * release this interface.
+     */
+    void *loader;
 } AVQSVDeviceContext;
 
 /**
diff --git a/libavutil/version.h b/libavutil/version.h
index 2e9e02dda8..87178e9e9a 100644
--- a/libavutil/version.h
+++ b/libavutil/version.h
@@ -79,7 +79,7 @@
  */
 
 #define LIBAVUTIL_VERSION_MAJOR  57
-#define LIBAVUTIL_VERSION_MINOR  27
+#define LIBAVUTIL_VERSION_MINOR  28
 #define LIBAVUTIL_VERSION_MICRO 100
 
 #define LIBAVUTIL_VERSION_INT   AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \
-- 
2.17.1

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