From 328b6bc55d95d40936743ec1ef390026644e1a4c Mon Sep 17 00:00:00 2001
From: Guillaume Desmottes <guillaume.desmottes@onestream.live>
Date: Wed, 21 May 2025 10:54:48 +0200
Subject: [PATCH] core: gstvalue: fix ANY/EMPTY caps (features) hash

They should be special cases as both do not have any actual caps/features.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/9037>
---
 subprojects/gstreamer/gst/gstvalue.c             | 16 ++++++++++++++++
 subprojects/gstreamer/tests/check/gst/gstvalue.c |  2 ++
 2 files changed, 18 insertions(+)

diff --git a/subprojects/gstreamer/gst/gstvalue.c b/subprojects/gstreamer/gst/gstvalue.c
index d8e94a72ec..dce0d27f0f 100644
--- a/subprojects/gstreamer/gst/gstvalue.c
+++ b/subprojects/gstreamer/gst/gstvalue.c
@@ -8365,6 +8365,14 @@ gst_hash_caps_features (const GstCapsFeatures * features, guint * res)
 {
   guint i;
 
+  if (gst_caps_features_is_any (features)) {
+    *res = g_str_hash ("ANY");
+    return TRUE;
+  } else if (gst_caps_features_get_size (features) == 0) {
+    *res = g_str_hash ("EMPTY");
+    return TRUE;
+  }
+
   *res = 0;
 
   for (i = 0; i < gst_caps_features_get_size (features); i++) {
@@ -8389,6 +8397,14 @@ gst_value_hash_caps (const GValue * v, guint * res)
   guint i;
   guint n = gst_caps_get_size (caps);
 
+  if (gst_caps_is_any (caps)) {
+    *res = g_str_hash ("ANY");
+    return TRUE;
+  } else if (n == 0) {
+    *res = g_str_hash ("EMPTY");
+    return TRUE;
+  }
+
   *res = 0;
   for (i = 0; i < n; i++) {
     GstCapsFeatures *features = gst_caps_get_features (caps, i);
diff --git a/subprojects/gstreamer/tests/check/gst/gstvalue.c b/subprojects/gstreamer/tests/check/gst/gstvalue.c
index 9e6e8d0abf..58546222ee 100644
--- a/subprojects/gstreamer/tests/check/gst/gstvalue.c
+++ b/subprojects/gstreamer/tests/check/gst/gstvalue.c
@@ -4168,6 +4168,7 @@ GST_START_TEST (test_hash)
     {GST_TYPE_CAPS, "video/x-raw", "audio/x-raw", TRUE},
     {GST_TYPE_CAPS, "video/x-raw,width=1920", "video/x-raw,width=800", TRUE},
     {GST_TYPE_CAPS, "video/x-raw", "video/x-raw(memory:DMABuf)", TRUE},
+    {GST_TYPE_CAPS, "ANY", "EMPTY", TRUE},
     {GST_TYPE_TAG_LIST, "taglist, title=(string)Title, artist=(string)Artist",
         "taglist, title=(string)Title2, artist=(string)Artist", TRUE},
     {G_TYPE_DATE, "1984-11-30", "1985-11-30", TRUE},
@@ -4180,6 +4181,7 @@ GST_START_TEST (test_hash)
         TRUE},
     {GST_TYPE_LIST, "{1, 2}", "{1, 3}", TRUE},
     {GST_TYPE_CAPS_FEATURES, "memory:DMABuf", "memory:GLMemory", FALSE},
+    {GST_TYPE_CAPS_FEATURES, "ANY", "", FALSE},
   };
 
   /* check that a and b are equal */