commit cc7cc67349b7a3f498882087aa42ffc05a2daf11
author Lajos Molnar <lajos@google.com> Mon Jun 01 14:58:37 2015 -0700
committer Lajos Molnar <lajos@google.com> Mon Jun 01 15:31:13 2015 -0700
tree 8eee8d499bf395c14750b900a82ecc59d47e6dbd
parent f9a3dce5d44b1ba598cc6f6a2e80da36e44618f7

stagefright: allow to overallocate OMX codec buffers

Specify allottedSize for useBuffer and allocateBufferWithBackup,
where OMX will see only the allottedSize, even though framework may
allocate and use a bigger buffer.

Bug: 13222807
Change-Id: Ibfa93f6c7b7c8ca0853ef17d4a0758e496eaf921

include/media/IOMX.h

diff --git a/include/media/IOMX.h b/include/media/IOMX.h
index d33d142..46c363a 100644
--- a/include/media/IOMX.h
+++ b/include/media/IOMX.h
@@ -98,9 +98,10 @@
     virtual status_t getGraphicBufferUsage(
             node_id node, OMX_U32 port_index, OMX_U32* usage) = 0;
 
+    // Use |params| as an OMX buffer, but limit the size of the OMX buffer to |allottedSize|.
     virtual status_t useBuffer(
             node_id node, OMX_U32 port_index, const sp<IMemory> &params,
-            buffer_id *buffer) = 0;
+            buffer_id *buffer, OMX_U32 allottedSize) = 0;
 
     virtual status_t useGraphicBuffer(
             node_id node, OMX_U32 port_index,
@@ -132,9 +133,11 @@
             node_id node, OMX_U32 port_index, size_t size,
             buffer_id *buffer, void **buffer_data) = 0;
 
+    // Allocate an OMX buffer of size |allotedSize|. Use |params| as the backup buffer, which
+    // may be larger.
     virtual status_t allocateBufferWithBackup(
             node_id node, OMX_U32 port_index, const sp<IMemory> &params,
-            buffer_id *buffer) = 0;
+            buffer_id *buffer, OMX_U32 allottedSize) = 0;
 
     virtual status_t freeBuffer(
             node_id node, OMX_U32 port_index, buffer_id buffer) = 0;