1 files changed, 78 insertions, 0 deletions
diff --git a/recipes-multimedia/gstreamer/gstreamer1.0-plugins-base/0001-basetextoverlay-make-memory-copy-when-video-buffer-s.patch b/recipes-multimedia/gstreamer/gstreamer1.0-plugins-base/0001-basetextoverlay-make-memory-copy-when-video-buffer-s.patch
new file mode 100644
index 0000000..28347c6
--- /dev/null
+++ b/recipes-multimedia/gstreamer/gstreamer1.0-plugins-base/0001-basetextoverlay-make-memory-copy-when-video-buffer-s.patch
@@ -0,0 +1,78 @@
+From f54f1c28272913a216e91868ce0270e6c0d99b2e Mon Sep 17 00:00:00 2001
+From: Mingke Wang <mingke.wang@freescale.com>
+Date: Fri, 16 Oct 2015 19:31:32 +0800
+Subject: [PATCH 01/16] basetextoverlay: make memory copy when video buffer's
+ memory is ready only
+
+1. since gst_buffer_make_writable just lookup the refcount to determine if
+   a buffer is writable, and it will use _gst_buffer_copy() which don't
+   perform a deep memory copy even if the flag of a memory is set to
+   GST_MEMORY_FLAG_READONLY. So, we detect the memory flag and use
+   gst_buffer_copy_region with GST_BUFFER_COPY_DEEP parameter to perform
+   deep memory copy. if the allocator of a memory don't support mem_copy
+   interface, the it will return NULL, if this case, we can use
+   gst_buffer_make_writable() to get a shared memory buffer or the orignal
+   buffer if the buffer's refcount is 1.
+
+Signed-off-by: Mingke Wang <mingke.wang@freescale.com>
+---
+ ext/pango/gstbasetextoverlay.c | 32 ++++++++++++++++++++++++++++++--
+ 1 file changed, 30 insertions(+), 2 deletions(-)
+ mode change 100644 => 100755 ext/pango/gstbasetextoverlay.c
+
+diff --git a/ext/pango/gstbasetextoverlay.c b/ext/pango/gstbasetextoverlay.c
+old mode 100644
+new mode 100755
+index 44f5f52..c08e3b0
+--- a/ext/pango/gstbasetextoverlay.c
++++ b/ext/pango/gstbasetextoverlay.c
+@@ -2227,16 +2227,44 @@ gst_base_text_overlay_push_frame (GstBaseTextOverlay * overlay,
+     }
+   }
+ 
+-  video_frame = gst_buffer_make_writable (video_frame);
+-
+   if (overlay->attach_compo_to_buffer) {
+     GST_DEBUG_OBJECT (overlay, "Attaching text overlay image to video buffer");
++    video_frame = gst_buffer_make_writable (video_frame);
+     gst_buffer_add_video_overlay_composition_meta (video_frame,
+         overlay->composition);
+     /* FIXME: emulate shaded background box if want_shading=true */
+     goto done;
+   }
+ 
++  gint idx = 0;
++  gboolean mem_rdonly = FALSE;
++  GstMemory *mem;
++
++  while (mem = gst_buffer_get_memory(video_frame, idx++)) {
++    if (GST_MEMORY_IS_READONLY(mem)) {
++      gst_memory_unref (mem);
++      mem_rdonly = TRUE;
++      break;
++    }
++    gst_memory_unref (mem);
++  }
++
++  if (mem_rdonly) {
++    GstBuffer *new_buf = gst_buffer_copy_region (video_frame,
++        GST_BUFFER_COPY_ALL | GST_BUFFER_COPY_DEEP, 0, -1);
++
++    if (!new_buf) {
++      GST_WARNING_OBJECT(overlay,
++                "buffer memory read only, but copy memory failed");
++      goto done;
++    } else {
++      gst_buffer_unref (video_frame);
++      video_frame = new_buf;
++    }
++  } else {
++    video_frame = gst_buffer_make_writable (video_frame);
++  }
++
+   if (!gst_video_frame_map (&frame, &overlay->info, video_frame,
+           GST_MAP_READWRITE))
+     goto invalid_frame;
+-- 
+1.9.1
+