1 files changed, 103 insertions, 0 deletions
diff --git a/services/camera/libcameraservice/device3/Camera3IOStreamBase.h b/services/camera/libcameraservice/device3/Camera3IOStreamBase.h
new file mode 100644
index 0000000..fcb9d04
--- /dev/null
+++ b/services/camera/libcameraservice/device3/Camera3IOStreamBase.h
@@ -0,0 +1,103 @@
+/*
+ * Copyright (C) 2013 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 ANDROID_SERVERS_CAMERA3_IO_STREAM_BASE_H
+#define ANDROID_SERVERS_CAMERA3_IO_STREAM_BASE_H
+
+#include <utils/RefBase.h>
+#include <gui/Surface.h>
+
+#include "Camera3Stream.h"
+
+namespace android {
+
+namespace camera3 {
+
+/**
+ * A base class for managing a single stream of I/O data from the camera device.
+ */
+class Camera3IOStreamBase :
+        public Camera3Stream {
+  protected:
+    Camera3IOStreamBase(int id, camera3_stream_type_t type,
+            uint32_t width, uint32_t height, size_t maxSize, int format);
+
+  public:
+
+    virtual ~Camera3IOStreamBase();
+
+    /**
+     * Camera3Stream interface
+     */
+
+    virtual void     dump(int fd, const Vector<String16> &args) const;
+
+  protected:
+    size_t            mTotalBufferCount;
+    // sum of input and output buffers that are currently acquired by HAL
+    size_t            mDequeuedBufferCount;
+    Condition         mBufferReturnedSignal;
+    uint32_t          mFrameCount;
+    // Last received output buffer's timestamp
+    nsecs_t           mLastTimestamp;
+
+    // The merged release fence for all returned buffers
+    sp<Fence>         mCombinedFence;
+
+    status_t         returnAnyBufferLocked(
+            const camera3_stream_buffer &buffer,
+            nsecs_t timestamp,
+            bool output);
+
+    virtual status_t returnBufferCheckedLocked(
+            const camera3_stream_buffer &buffer,
+            nsecs_t timestamp,
+            bool output,
+            /*out*/
+            sp<Fence> *releaseFenceOut) = 0;
+
+    /**
+     * Internal Camera3Stream interface
+     */
+    virtual bool     hasOutstandingBuffersLocked() const;
+
+    virtual size_t   getBufferCountLocked();
+
+    virtual status_t getEndpointUsage(uint32_t *usage) = 0;
+
+    status_t getBufferPreconditionCheckLocked() const;
+    status_t returnBufferPreconditionCheckLocked() const;
+
+    // State check only
+    virtual status_t configureQueueLocked();
+    // State checks only
+    virtual status_t disconnectLocked();
+
+    // Hand out the buffer to a native location,
+    //   incrementing the internal refcount and dequeued buffer count
+    void handoutBufferLocked(camera3_stream_buffer &buffer,
+                             buffer_handle_t *handle,
+                             int acquire_fence,
+                             int release_fence,
+                             camera3_buffer_status_t status);
+
+}; // class Camera3IOStreamBase
+
+} // namespace camera3
+
+} // namespace android
+
+#endif