Add experimental camera session prepare API.
Bug: 18949148
Change-Id: I8f73e68ea2e3acc60d98954106f364d13f439a82
diff --git a/services/camera/libcameraservice/device3/Camera3StreamInterface.h b/services/camera/libcameraservice/device3/Camera3StreamInterface.h
index c086eaf..54009ae 100644
--- a/services/camera/libcameraservice/device3/Camera3StreamInterface.h
+++ b/services/camera/libcameraservice/device3/Camera3StreamInterface.h
@@ -34,6 +34,11 @@
*/
class Camera3StreamInterface : public virtual RefBase {
public:
+
+ enum {
+ ALLOCATE_PIPELINE_MAX = 0, // Allocate max buffers used by a given surface
+ };
+
/**
* Get the stream's ID
*/
@@ -98,7 +103,9 @@
/**
* Start stream preparation. May only be called in the CONFIGURED state,
- * when no valid buffers have yet been returned to this stream.
+ * when no valid buffers have yet been returned to this stream. Prepares
+ * up to maxCount buffers, or the maximum number of buffers needed by the
+ * pipeline if maxCount is ALLOCATE_PIPELINE_MAX.
*
* If no prepartion is necessary, returns OK and does not transition to
* PREPARING state. Otherwise, returns NOT_ENOUGH_DATA and transitions
@@ -112,7 +119,7 @@
* INVALID_OPERATION if called when not in CONFIGURED state, or a
* valid buffer has already been returned to this stream.
*/
- virtual status_t startPrepare() = 0;
+ virtual status_t startPrepare(int maxCount) = 0;
/**
* Check if the stream is mid-preparing.