hls: Make crypto dependency optional when hls-crypto is auto

crypto libraries are not required for hlssink and hlssink2.
Also, hlsdemux with nonencrypted stream can work without crpyto.

Make an error only when users set "hls-crpyto" with non-auto option explicitly,
but no crpyto library was found.

1 files changed, 25 insertions, 1 deletions

diff --git a/ext/hls/gsthlsdemux.c b/ext/hls/gsthlsdemux.c
index 1e4d0df90..968475746 100644
--- a/ext/hls/gsthlsdemux.c
+++ b/ext/hls/gsthlsdemux.c
@@ -1753,7 +1753,7 @@ gst_hls_demux_stream_decrypt_end (GstHLSDemuxStream * stream)
   /* NOP */
 }
 
-#else
+#elif defined(HAVE_LIBGCRYPT)
 static gboolean
 gst_hls_demux_stream_decrypt_start (GstHLSDemuxStream * stream,
     const guint8 * key_data, const guint8 * iv_data)
@@ -1801,6 +1801,30 @@ gst_hls_demux_stream_decrypt_end (GstHLSDemuxStream * stream)
     stream->aes_ctx = NULL;
   }
 }
+
+#else
+/* NO crypto available */
+static gboolean
+gst_hls_demux_stream_decrypt_start (GstHLSDemuxStream * stream,
+    const guint8 * key_data, const guint8 * iv_data)
+{
+  GST_ERROR ("No crypto available");
+  return FALSE;
+}
+
+static gboolean
+decrypt_fragment (GstHLSDemuxStream * stream, gsize length,
+    const guint8 * encrypted_data, guint8 * decrypted_data)
+{
+  GST_ERROR ("Cannot decrypt fragment, no crypto available");
+  return FALSE;
+}
+
+static void
+gst_hls_demux_stream_decrypt_end (GstHLSDemuxStream * stream)
+{
+  return;
+}
 #endif
 
 static GstBuffer *