[FFmpeg-devel] [PATCH] avfilter/vpp_qsv: fix regression on older api versions (e.g. 1.11)

[ffmpegagent]

From: softworkz <softworkz at hotmail.com>

Commit 8b83dad82512a6948b63408f964463b063ad24c9 introduced a regression in a way
that scaling via vpp_qsv didn't work any longer for devices with an MSDK runtime
version lower than 1.19. This is true for older CPUs which are stuck at 1.11.
The commit added checks for the compile-sdk version but it didn't test for the
runtime version.

Signed-off-by: softworkz <softworkz at hotmail.com>
---
    avfilter/vpp_qsv: fix regression on older api versions (e.g. 1.11)
    
    Fix a recently introduced regression when using QSV VPP.

Published-As: https://github.com/ffstaging/FFmpeg/releases/tag/pr-ffstaging-15%2Fsoftworkz%2Fqsv_vpp_regression-v1
Fetch-It-Via: git fetch https://github.com/ffstaging/FFmpeg pr-ffstaging-15/softworkz/qsv_vpp_regression-v1
Pull-Request: https://github.com/ffstaging/FFmpeg/pull/15

 libavfilter/vf_vpp_qsv.c | 32 ++++++++++++++++++++------------
 1 file changed, 20 insertions(+), 12 deletions(-)

diff --git a/libavfilter/vf_vpp_qsv.c b/libavfilter/vf_vpp_qsv.c
index ab58a5777e..09590157e3 100644
--- a/libavfilter/vf_vpp_qsv.c
+++ b/libavfilter/vf_vpp_qsv.c
@@ -139,8 +139,9 @@ static const AVOption options[] = {
     { "height", "Output video height", OFFSET(oh), AV_OPT_TYPE_STRING, { .str="w*ch/cw" }, 0, 255, .flags = FLAGS },
     { "format", "Output pixel format", OFFSET(output_format_str), AV_OPT_TYPE_STRING, { .str = "same" }, .flags = FLAGS },
     { "async_depth", "Internal parallelization depth, the higher the value the higher the latency.", OFFSET(async_depth), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, .flags = FLAGS },
+#ifdef QSV_HAVE_SCALING_CONFIG
     { "scale_mode", "scale mode: 0=auto, 1=low power, 2=high quality", OFFSET(scale_mode), AV_OPT_TYPE_INT, { .i64 = MFX_SCALING_MODE_DEFAULT }, MFX_SCALING_MODE_DEFAULT, MFX_SCALING_MODE_QUALITY, .flags = FLAGS, "scale mode" },
-
+#endif
     { NULL }
 };
 
@@ -304,6 +305,7 @@ static int config_output(AVFilterLink *outlink)
     QSVVPPParam     param = { NULL };
     QSVVPPCrop      crop  = { 0 };
     mfxExtBuffer    *ext_buf[ENH_FILTERS_COUNT];
+    mfxVersion      mfx_version;
     AVFilterLink    *inlink = ctx->inputs[0];
     enum AVPixelFormat in_format;
 
@@ -317,6 +319,11 @@ static int config_output(AVFilterLink *outlink)
     param.ext_buf       = ext_buf;
     param.async_depth   = vpp->async_depth;
 
+    if (MFXQueryVersion(vpp->qsv->session, &mfx_version) < 0) {
+        av_log(ctx, AV_LOG_ERROR, "Failed to query mfx version.\n");
+        return AVERROR(EINVAL);
+    }
+
     if (inlink->format == AV_PIX_FMT_QSV) {
          if (!inlink->hw_frames_ctx || !inlink->hw_frames_ctx->data)
              return AVERROR(EINVAL);
@@ -467,19 +474,20 @@ static int config_output(AVFilterLink *outlink)
 #endif
     }
 
-    if (inlink->w != outlink->w || inlink->h != outlink->h) {
 #ifdef QSV_HAVE_SCALING_CONFIG
-        memset(&vpp->scale_conf, 0, sizeof(mfxExtVPPScaling));
-        vpp->scale_conf.Header.BufferId    = MFX_EXTBUFF_VPP_SCALING;
-        vpp->scale_conf.Header.BufferSz    = sizeof(mfxExtVPPScaling);
-        vpp->scale_conf.ScalingMode        = vpp->scale_mode;
-
-        param.ext_buf[param.num_ext_buf++] = (mfxExtBuffer*)&vpp->scale_conf;
-#else
-        av_log(ctx, AV_LOG_WARNING, "The QSV VPP Scale option is "
-            "not supported with this MSDK version.\n");
-#endif
+    if (inlink->w != outlink->w || inlink->h != outlink->h) {
+        if (QSV_RUNTIME_VERSION_ATLEAST(mfx_version, 1, 19)) {
+            memset(&vpp->scale_conf, 0, sizeof(mfxExtVPPScaling));
+            vpp->scale_conf.Header.BufferId    = MFX_EXTBUFF_VPP_SCALING;
+            vpp->scale_conf.Header.BufferSz    = sizeof(mfxExtVPPScaling);
+            vpp->scale_conf.ScalingMode        = vpp->scale_mode;
+
+            param.ext_buf[param.num_ext_buf++] = (mfxExtBuffer*)&vpp->scale_conf;
+        } else
+            av_log(ctx, AV_LOG_WARNING, "The QSV VPP Scale option is "
+                "not supported with this MSDK version.\n");
     }
+#endif
 
     if (vpp->use_frc || vpp->use_crop || vpp->deinterlace || vpp->denoise ||
         vpp->detail || vpp->procamp || vpp->rotate || vpp->hflip ||

base-commit: d6b2357eddca392ee137cb2a92ff178a0a7d0cce
-- 
ffmpeg-codebot