v4l2: Add initial support for alignment and cropping

[platform/upstream/gst-plugins-good.git] / sys / v4l2 / gstv4l2bufferpool.c

diff --git a/sys/v4l2/gstv4l2bufferpool.c b/sys/v4l2/gstv4l2bufferpool.c
index 5e669c9..f209345 100644 (file)
--- a/sys/v4l2/gstv4l2bufferpool.c
+++ b/sys/v4l2/gstv4l2bufferpool.c
@@ -141,11 +141,13 @@ gst_v4l2_buffer_pool_alloc_buffer (GstBufferPool * bpool, GstBuffer ** buffer,
   GstV4l2Meta *meta;
   GstV4l2Object *obj;
   GstVideoInfo *info;
+  GstVideoAlignment *align;
   guint index;
   gint i;
 
   obj = pool->obj;
   info = &obj->info;
+  align = &obj->align;
 
   switch (obj->mode) {
     case GST_V4L2_IO_RW:
@@ -339,6 +341,15 @@ gst_v4l2_buffer_pool_alloc_buffer (GstBufferPool * bpool, GstBuffer ** buffer,
             GST_VIDEO_INFO_FORMAT (info), width, height, n_gst_planes,
             offset, stride);
       }
+
+      if (pool->add_cropmeta) {
+        GstVideoCropMeta *crop;
+        crop = gst_buffer_add_video_crop_meta (newbuf);
+        crop->x = align->padding_left;
+        crop->y = align->padding_top;
+        crop->width = info->width;
+        crop->width = info->height;
+      }
       break;
     }
     case GST_V4L2_IO_USERPTR:
@@ -1666,3 +1677,9 @@ start_failed:
     return FALSE;
   }
 }
+
+void
+gst_v4l2_buffer_pool_add_crop_meta (GstV4l2BufferPool * bpool, gboolean add)
+{
+  bpool->add_cropmeta = add;
+}