Add request tracking.
RequestTracker keeps track of how many buffers are in flight for
each stream, and what frame numbers correspond to what requests/buffers.
BUG: 31044638
TEST: unit tests pass
Change-Id: I8ef3fcacdf8171514ea7f7eaf77301a641bff61e
diff --git a/modules/camera/3_4/capture_request.h b/modules/camera/3_4/capture_request.h
new file mode 100644
index 0000000..e2f95fa
--- /dev/null
+++ b/modules/camera/3_4/capture_request.h
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef DEFAULT_CAMERA_HAL_CAPTURE_REQUEST_H_
+#define DEFAULT_CAMERA_HAL_CAPTURE_REQUEST_H_
+
+#include <memory>
+#include <vector>
+
+#include <camera/CameraMetadata.h>
+#include <hardware/camera3.h>
+
+namespace default_camera_hal {
+
+// A simple wrapper for camera3_capture_request_t,
+// with a constructor that makes a deep copy from the original struct.
+struct CaptureRequest {
+ uint32_t frame_number;
+ android::CameraMetadata settings;
+ std::unique_ptr<camera3_stream_buffer_t> input_buffer;
+ std::vector<camera3_stream_buffer_t> output_buffers;
+
+ CaptureRequest();
+ // Create a deep copy of |request|.
+ CaptureRequest(const camera3_capture_request_t* request);
+};
+
+} // namespace default_camera_hal
+
+#endif // DEFAULT_CAMERA_HAL_CAPTURE_REQUEST_H_