X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavutil%2Fhwcontext_qsv.c;h=b1b67400de7e670dc608f0e2c929d021ad130e59;hb=e923a35988151842083ae7f8230ae2a40149982c;hp=49b5952cef28a17ebe27c92d724e100435091d05;hpb=2d81acaa1adf2280d74d280491f05f0baa4a31d9;p=ffmpeg

diff --git a/libavutil/hwcontext_qsv.c b/libavutil/hwcontext_qsv.c
index 49b5952cef2..b1b67400de7 100644
--- a/libavutil/hwcontext_qsv.c
+++ b/libavutil/hwcontext_qsv.c
@@ -1180,11 +1180,6 @@ static int qsv_device_derive_from_child(AVHWDeviceContext *ctx,
         goto fail;
     }
 
-    ret = MFXQueryVersion(hwctx->session,&ver);
-    if (ret == MFX_ERR_NONE) {
-        av_log(ctx, AV_LOG_VERBOSE, "MFX compile/runtime API: %d.%d/%d.%d\n",
-               MFX_VERSION_MAJOR, MFX_VERSION_MINOR, ver.Major, ver.Minor);
-    }
     return 0;
 
 fail:
@@ -1206,6 +1201,7 @@ static int qsv_device_create(AVHWDeviceContext *ctx, const char *device,
     QSVDevicePriv *priv;
     enum AVHWDeviceType child_device_type;
     AVHWDeviceContext *child_device;
+    AVDictionary *child_device_opts;
     AVDictionaryEntry *e;
 
     mfxIMPL impl;
@@ -1220,9 +1216,17 @@ static int qsv_device_create(AVHWDeviceContext *ctx, const char *device,
 
     e = av_dict_get(opts, "child_device", NULL, 0);
 
-    if (CONFIG_VAAPI)
+    child_device_opts = NULL;
+    if (CONFIG_VAAPI) {
         child_device_type = AV_HWDEVICE_TYPE_VAAPI;
-    else if (CONFIG_DXVA2)
+        // libmfx does not actually implement VAAPI properly, rather it
+        // depends on the specific behaviour of a matching iHD driver when
+        // used on recent Intel hardware.  Set options to the VAAPI device
+        // creation so that we should pick a usable setup by default if
+        // possible, even when multiple devices and drivers are available.
+        av_dict_set(&child_device_opts, "kernel_driver", "i915", 0);
+        av_dict_set(&child_device_opts, "driver",        "iHD",  0);
+    } else if (CONFIG_DXVA2)
         child_device_type = AV_HWDEVICE_TYPE_DXVA2;
     else {
         av_log(ctx, AV_LOG_ERROR, "No supported child device type is enabled\n");
@@ -1230,7 +1234,9 @@ static int qsv_device_create(AVHWDeviceContext *ctx, const char *device,
     }
 
     ret = av_hwdevice_ctx_create(&priv->child_device_ctx, child_device_type,
-                                 e ? e->value : NULL, NULL, 0);
+                                 e ? e->value : NULL, child_device_opts, 0);
+
+    av_dict_free(&child_device_opts);
     if (ret < 0)
         return ret;