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compositor: Warn when inputs are SDR/HDR mixed

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Let user know that the result of mixed SDR/HDR is not guaranteed
to be a good visual quality.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1486>
This commit is contained in:
Seungha Yang 2022-01-18 21:21:23 +09:00 committed by GStreamer Marge Bot
parent 56d47f641f
commit 648739012a
1 changed files with 38 additions and 0 deletions
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38
subprojects/gst-plugins-base/gst/compositor/compositor.c
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@ -1389,6 +1389,10 @@ _negotiated_caps (GstAggregator * agg, GstCaps * caps)
GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (agg);
GstVideoInfo v_info;
guint n_threads;
GList *iter;
guint n_sdr = 0;
guint n_hlg = 0;
guint n_pq = 0;
GST_DEBUG_OBJECT (agg, "Negotiated caps %" GST_PTR_FORMAT, caps);
@ -1400,6 +1404,40 @@ _negotiated_caps (GstAggregator * agg, GstCaps * caps)
return FALSE;
}
GST_OBJECT_LOCK (vagg);
for (iter = GST_ELEMENT (vagg)->sinkpads; iter; iter = g_list_next (iter)) {
GstVideoAggregatorPad *pad = (GstVideoAggregatorPad *) iter->data;
if (!pad->info.finfo)
continue;
switch (pad->info.colorimetry.transfer) {
case GST_VIDEO_TRANSFER_SMPTE2084:
n_pq++;
break;
case GST_VIDEO_TRANSFER_ARIB_STD_B67:
n_hlg++;
break;
default:
n_sdr++;
break;
}
}
GST_OBJECT_UNLOCK (vagg);
/* TODO: we don't have support for HDR tone-mapping, so mixing HDR/SDR might
* result in somewhat visually bad image. Needs enhancement to the
* video-convert or somewhere */
if (n_sdr > 0) {
if (n_hlg > 0 || n_pq > 0) {
GST_ELEMENT_WARNING (compositor, STREAM, NOT_IMPLEMENTED,
("Mixing SDR and HDR contents would result in color loss"), (NULL));
}
} else if (n_hlg > 0 && n_pq > 0) {
GST_ELEMENT_WARNING (compositor, STREAM, NOT_IMPLEMENTED,
("Mixing HDR10 and HLG contents would result in color loss"), (NULL));
}
if (compositor->max_threads == 0)
n_threads = g_get_num_processors ();
else