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v4l2bufferpool: add support for multi-planar V4l2 API in DMABUF mode

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Fixes bug https://bugzilla.gnome.org/show_bug.cgi?id=712754
This commit is contained in:
Julien Isorce 2013-11-21 12:29:28 +00:00
parent 303cec48db
commit 3c70741e45
1 changed files with 19 additions and 7 deletions
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26
sys/v4l2/gstv4l2bufferpool.c
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@ -273,13 +273,25 @@ gst_v4l2_buffer_pool_alloc_buffer (GstBufferPool * bpool, GstBuffer ** buffer,
expbuf.type = meta->vbuffer.type;
expbuf.index = meta->vbuffer.index;
expbuf.flags = O_CLOEXEC;
if (v4l2_ioctl (pool->video_fd, VIDIOC_EXPBUF, &expbuf) < 0)
goto expbuf_failed;
for (i = 0; i < meta->n_planes; i++) {
expbuf.plane = i;
if (v4l2_ioctl (pool->video_fd, VIDIOC_EXPBUF, &expbuf) < 0)
goto expbuf_failed;
gst_buffer_append_memory (newbuf,
gst_dmabuf_allocator_alloc (pool->allocator, expbuf.fd,
meta->vplanes[i].length));
}
meta->vbuffer.memory = V4L2_MEMORY_DMABUF;
gst_buffer_append_memory (newbuf,
gst_dmabuf_allocator_alloc (pool->allocator, expbuf.fd,
meta->vbuffer.length));
/* in non-MPLANE mode our meta is not automatically updated
* because the plane is emulated (not referenced by
* meta->vbuffer) */
if (!V4L2_TYPE_IS_MULTIPLANAR (obj->type))
meta->vplanes[0].m.fd = meta->vbuffer.m.fd;
}
#endif
/* add metadata to raw video buffers */
@ -425,8 +437,8 @@ gst_v4l2_buffer_pool_set_config (GstBufferPool * bpool, GstStructure * config)
GST_VIDEO_INFO_FORMAT (&obj->info) != GST_VIDEO_FORMAT_ENCODED) {
/* in non MPLANE mode, there is only one bytesperline field */
gint nb_checked_planes =
V4L2_TYPE_IS_MULTIPLANAR (obj->
type) ? GST_VIDEO_INFO_N_PLANES (&obj->info) : 1;
V4L2_TYPE_IS_MULTIPLANAR (obj->type) ? GST_VIDEO_INFO_N_PLANES (&obj->
info) : 1;
gint stride = 0;
gint i = 0;
for (i = 0; i < nb_checked_planes; i++) {