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

1 files changed, 5 insertions, 2 deletions

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 @@ public:
     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 @@ public:
             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;