IOMX: Add prepareForAdaptivePlayback method

prepareForAdaptivePlayback is the fallback mechanism to support
seamless resolution change for devices that do not support dynamic
output buffers.  It is up to the codecs to handle this appropriately,
but codecs that do not handle dynamic output buffers would
request enough buffers up to the requested size in this method
to avoid port reconfiguration on resolution changes.

Change-Id: I58d4aa8ef1359ea3472735bbe9140c3132039b3d
Signed-off-by: Lajos Molnar <lajos@google.com>
Bug: 10192531
Related-to-bug: 7093648

2 files changed, 8 insertions, 0 deletions

diff --git a/media/libstagefright/include/OMX.h b/media/libstagefright/include/OMX.h
index 7e53af3..31a5077 100644
--- a/media/libstagefright/include/OMX.h
+++ b/media/libstagefright/include/OMX.h
@@ -71,6 +71,10 @@ public:
     virtual status_t storeMetaDataInBuffers(
             node_id node, OMX_U32 port_index, OMX_BOOL enable);
 
+    virtual status_t prepareForAdaptivePlayback(
+            node_id node, OMX_U32 portIndex, OMX_BOOL enable,
+            OMX_U32 max_frame_width, OMX_U32 max_frame_height);
+
     virtual status_t useBuffer(
             node_id node, OMX_U32 port_index, const sp<IMemory> &params,
             buffer_id *buffer);
diff --git a/media/libstagefright/include/OMXNodeInstance.h b/media/libstagefright/include/OMXNodeInstance.h
index ae498b4..339179e 100644
--- a/media/libstagefright/include/OMXNodeInstance.h
+++ b/media/libstagefright/include/OMXNodeInstance.h
@@ -58,6 +58,10 @@ struct OMXNodeInstance {
 
     status_t storeMetaDataInBuffers(OMX_U32 portIndex, OMX_BOOL enable);
 
+    status_t prepareForAdaptivePlayback(
+            OMX_U32 portIndex, OMX_BOOL enable,
+            OMX_U32 maxFrameWidth, OMX_U32 maxFrameHeight);
+
     status_t useBuffer(
             OMX_U32 portIndex, const sp<IMemory> &params,
             OMX::buffer_id *buffer);