From 6e0ba50a9cb9ff082563adfd21823368c0ae1655 Mon Sep 17 00:00:00 2001
From: Wim Taymans <wtaymans@redhat.com>
Date: Thu, 15 Apr 2021 20:39:12 +0200
Subject: [PATCH] libcamera: use the buffer datatype as the port type

In use buffers we need to respect the buffer data type.
---
 spa/plugins/libcamera/libcamera-utils.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/spa/plugins/libcamera/libcamera-utils.c b/spa/plugins/libcamera/libcamera-utils.c
index 9b57ee4a6..c530f03e0 100644
--- a/spa/plugins/libcamera/libcamera-utils.c
+++ b/spa/plugins/libcamera/libcamera-utils.c
@@ -675,7 +675,14 @@ static int spa_libcamera_use_buffers(struct impl *this, struct spa_buffer **buff
 	if (n_buffers > 0) {
 		d = buffers[0]->datas;
 
-		port->memtype = SPA_DATA_DmaBuf;
+		if (d[0].type == SPA_DATA_MemPtr && d[0].data != NULL) {
+			port->memtype = SPA_DATA_MemPtr;
+		} else if (d[0].type == SPA_DATA_DmaBuf) {
+			port->memtype = SPA_DATA_DmaBuf;
+		} else {
+			spa_log_error(this->log, "v4l2: can't use buffers of type %d", d[0].type);
+			return -EINVAL;
+		}
 	}
 
 	for (i = 0; i < n_buffers; i++) {