This allows some optimizations in driver, such as not having to read
back the data if write-only mapping is requested.
---
libavutil/hwcontext_vaapi.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/libavutil/hwcontext_vaapi.c b/libavutil/hwcontext_vaapi.c
index 558fed94c6..c3ecd90077 100644
--- a/libavutil/hwcontext_vaapi.c
+++ b/libavutil/hwcontext_vaapi.c
@@ -882,7 +882,16 @@ static int vaapi_map_frame(AVHWFramesContext *hwfc,
}
}
+#if VA_CHECK_VERSION(1, 21, 0)
+ uint32_t vaflags = 0;
+ if (flags & AV_HWFRAME_MAP_READ || !(flags & AV_HWFRAME_MAP_OVERWRITE))
+ vaflags |= VA_MAPBUFFER_FLAG_READ;
+ if (flags & AV_HWFRAME_MAP_WRITE)
+ vaflags |= VA_MAPBUFFER_FLAG_WRITE;
+ vas = vaMapBuffer2(hwctx->display, map->image.buf, &address, vaflags);
+#else
vas = vaMapBuffer(hwctx->display, map->image.buf, &address);
+#endif
if (vas != VA_STATUS_SUCCESS) {
av_log(hwfc, AV_LOG_ERROR, "Failed to map image from surface "
"%#x: %d (%s).\n", surface_id, vas, vaErrorStr(vas));
--
2.42.0
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