commit 5f7a214b9c178d289f0f0dacbe35e6f58e2835a0
author Yuanjun Huang <yuanjun.huang@intel.com> Wed Dec 10 01:38:52 2014 +0800
committer Patrick Tjin <pattjin@google.com> Fri Dec 12 08:09:25 2014 -0800
tree 8bdcff07f0d6672b8571b014014b7e2b7fde5113
parent 2c6fb3e28229a8b90c4a719caeb0e30b44dc0510

clear video buffer that from gralloc to be black.

Bug: 18156738
BZ: 227732
Change-Id: Id2f135e3cf27a15300e19ccadd18ef257f13109f
Signed-off-by: Yuanjun Huang <yuanjun.huang@intel.com>

src/android/psb_surface_gralloc.c

diff --git a/src/android/psb_surface_gralloc.c b/src/android/psb_surface_gralloc.c
index 86d61c8..0d63d5e 100644
--- a/src/android/psb_surface_gralloc.c
+++ b/src/android/psb_surface_gralloc.c
@@ -262,6 +262,7 @@
     unsigned long handle;
     int size = num_surfaces * sizeof(unsigned int);
     void *vaddr[GRALLOC_SUB_BUFFER_MAX];
+    unsigned char * surface_data = NULL;
 
 
     /* follow are gralloc-buffers */
@@ -429,6 +430,16 @@
             }
             gralloc_unlock((buffer_handle_t)handle);
             psb_surface->buf.user_ptr = NULL;
+
+            if (psb_buffer_map(&psb_surface->buf, &surface_data)) {
+                drv_debug_msg(VIDEO_DEBUG_ERROR, "Failed to map rotation buffer before clear it");
+            }
+            else {
+                size = psb_surface->chroma_offset;
+                memset(surface_data, 0, size);
+                memset(surface_data + size, 0x80, psb_surface->size - size);
+                psb_buffer_unmap(&psb_surface->buf);
+            }
         }
         pthread_mutex_unlock(&gralloc_mutex);