From 1b09bc609a578e731f0dbc8f6e698e25d8f4c5f8 Mon Sep 17 00:00:00 2001 From: Wim Taymans Date: Tue, 26 Jun 2012 12:07:47 +0200 Subject: [PATCH] v4l2: free kernel buffers before allocating new ones See https://bugzilla.gnome.org/show_bug.cgi?id=670257 --- sys/v4l2/gstv4l2bufferpool.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/sys/v4l2/gstv4l2bufferpool.c b/sys/v4l2/gstv4l2bufferpool.c index 0679ea3bf..65d1a5c57 100644 --- a/sys/v4l2/gstv4l2bufferpool.c +++ b/sys/v4l2/gstv4l2bufferpool.c @@ -305,6 +305,17 @@ gst_v4l2_buffer_pool_set_config (GstBufferPool * bpool, GstStructure * config) else num_buffers = max_buffers; + /* Free the buffers from the kernel */ + GST_DEBUG_OBJECT (pool, "Freeing the buffers from the kernel"); + + memset (&breq, 0, sizeof (struct v4l2_requestbuffers)); + breq.type = obj->type; + breq.count = 0; + breq.memory = V4L2_MEMORY_MMAP; + + if (v4l2_ioctl (pool->video_fd, VIDIOC_REQBUFS, &breq) < 0) + goto reqbufs_failed; + /* first, lets request buffers, and see how many we can get: */ GST_DEBUG_OBJECT (pool, "starting, requesting %d MMAP buffers", num_buffers); -- 2.34.1