patch to gst to add export of DMA fd of input port

This patch adds h264 decode plugin using DMA for gstreamer.
This plugin is supposed to be used to encode video data for
CES2017 cluster demo.

Change-Id: I19e3595aac8943ce3f348764aca66d2b4132cf28
Signed-off-by: Grigory Kletsko <grigory.kletsko@cogentembedded.com>

1 files changed, 65 insertions, 0 deletions

diff --git a/meta-rcar-gen2/recipes-multimedia/gstreamer/gstreamer1.0-omx/0004-Export-a-first-dmabuf-file-descriptor-with-the-whole.patch b/meta-rcar-gen2/recipes-multimedia/gstreamer/gstreamer1.0-omx/0004-Export-a-first-dmabuf-file-descriptor-with-the-whole.patch
new file mode 100644
index 0000000..6aa5d48
--- /dev/null
+++ b/meta-rcar-gen2/recipes-multimedia/gstreamer/gstreamer1.0-omx/0004-Export-a-first-dmabuf-file-descriptor-with-the-whole.patch
@@ -0,0 +1,65 @@
+From 1fe52cec8fec530a79eb3ab9f313bb860ec109be Mon Sep 17 00:00:00 2001
+From: Andrey Gusakov <andrey.gusakov@cogentembedded.com>
+Date: Thu, 1 Sep 2016 18:44:49 +0300
+Subject: [PATCH 04/10] Export a first dmabuf file descriptor with the whole
+ size
+
+This patch exports a dmabuf file descriptor from the head of Y plane
+to the end of the buffer so that mapping the whole plane as
+contiguous memory is available.
+
+Signed-off-by: Andrey Gusakov <andrey.gusakov@cogentembedded.com>
+---
+ omx/gstomxbufferpool.c |   17 +++++++++++++----
+ 1 file changed, 13 insertions(+), 4 deletions(-)
+
+diff --git a/omx/gstomxbufferpool.c b/omx/gstomxbufferpool.c
+index 2585a72..b9fa769 100644
+--- a/omx/gstomxbufferpool.c
++++ b/omx/gstomxbufferpool.c
+@@ -399,6 +399,7 @@ gst_omx_buffer_pool_create_buffer_contain_dmabuf (GstOMXBufferPool * self,
+   gint i;
+   gint page_size;
+   guint phys_addr = 0;
++  guint phys_size = 0;
+ 
+   new_buf = gst_buffer_new ();
+   page_size = getpagesize ();
+@@ -410,13 +411,15 @@ gst_omx_buffer_pool_create_buffer_contain_dmabuf (GstOMXBufferPool * self,
+     OMXR_MC_VIDEO_DECODERESULTTYPE *decode_res =
+         (OMXR_MC_VIDEO_DECODERESULTTYPE *) omx_buf->omx_buf->pOutputPortPrivate;
+     phys_addr = decode_res->pvPhysImageAddressY;
++    phys_size = (guint) omx_buf->omx_buf->nAllocLen;
+   } else if (GST_IS_OMX_VIDEO_ENC (self->element)) {
+     /* private data is a physical address of HW buffer */
+     phys_addr = (guint) omx_buf->omx_buf->pInputPortPrivate;
++    phys_size = (guint) omx_buf->omx_buf->nAllocLen;
+   }
+ 
+-  if (phys_addr == 0) {
+-    GST_ERROR_OBJECT (self, "Invalid phys addr for OMX buffer");
++  if ((phys_addr == 0) || (phys_size == 0)) {
++    GST_ERROR_OBJECT (self, "Invalid phys range for OMX buffer");
+     return NULL;
+   }
+ 
+@@ -428,8 +431,14 @@ gst_omx_buffer_pool_create_buffer_contain_dmabuf (GstOMXBufferPool * self,
+     /* Calculate offset between physical address and page boundary */
+     page_offset[i] = plane_addr & (page_size - 1);
+ 
+-    plane_size[i] = stride[i] *
+-        GST_VIDEO_INFO_COMP_HEIGHT (&self->video_info, i);
++    /* Export a dmabuf file descriptor from the head of Y plane to
++     * the end of the buffer so that mapping the whole plane as
++     * contiguous memory is available. */
++    if (i == 0)
++      plane_size[i] = phys_size;
++    else
++      plane_size[i] = stride[i] *
++          GST_VIDEO_INFO_COMP_HEIGHT (&self->video_info, i);
+ 
+     /* When downstream plugins do mapping from dmabuf fd it requires
+      * mapping from boundary page and size align for page size so
+-- 
+1.7.10.4
+