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Diffstat (limited to 'services/camera/libcameraservice/device3/Camera3DummyStream.h')
-rw-r--r-- | services/camera/libcameraservice/device3/Camera3DummyStream.h | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/services/camera/libcameraservice/device3/Camera3DummyStream.h b/services/camera/libcameraservice/device3/Camera3DummyStream.h new file mode 100644 index 0000000..3e42623 --- /dev/null +++ b/services/camera/libcameraservice/device3/Camera3DummyStream.h @@ -0,0 +1,98 @@ +/* + * Copyright (C) 2014 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_DUMMY_STREAM_H +#define ANDROID_SERVERS_CAMERA3_DUMMY_STREAM_H + +#include <utils/RefBase.h> +#include <gui/Surface.h> + +#include "Camera3Stream.h" +#include "Camera3IOStreamBase.h" +#include "Camera3OutputStreamInterface.h" + +namespace android { +namespace camera3 { + +/** + * A dummy output stream class, to be used as a placeholder when no valid + * streams are configured by the client. + * This is necessary because camera HAL v3.2 or older disallow configuring + * 0 output streams, while the public camera2 API allows for it. + */ +class Camera3DummyStream : + public Camera3IOStreamBase, + public Camera3OutputStreamInterface { + + public: + /** + * Set up a dummy stream; doesn't actually connect to anything, and uses + * a default dummy format and size. + */ + Camera3DummyStream(int id); + + virtual ~Camera3DummyStream(); + + /** + * Camera3Stream interface + */ + + virtual void dump(int fd, const Vector<String16> &args) const; + + status_t setTransform(int transform); + + protected: + + /** + * Note that we release the lock briefly in this function + */ + virtual status_t returnBufferCheckedLocked( + const camera3_stream_buffer &buffer, + nsecs_t timestamp, + bool output, + /*out*/ + sp<Fence> *releaseFenceOut); + + virtual status_t disconnectLocked(); + + private: + + // Default dummy parameters; 320x240 is a required size for all devices, + // otherwise act like a SurfaceView would. + static const int DUMMY_WIDTH = 320; + static const int DUMMY_HEIGHT = 240; + static const int DUMMY_FORMAT = HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED; + static const uint32_t DUMMY_USAGE = GRALLOC_USAGE_HW_COMPOSER; + + /** + * Internal Camera3Stream interface + */ + virtual status_t getBufferLocked(camera3_stream_buffer *buffer); + virtual status_t returnBufferLocked( + const camera3_stream_buffer &buffer, + nsecs_t timestamp); + + virtual status_t configureQueueLocked(); + + virtual status_t getEndpointUsage(uint32_t *usage); + +}; // class Camera3DummyStream + +} // namespace camera3 + +} // namespace android + +#endif |