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62 lines
1.9 KiB
62 lines
1.9 KiB
/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef STREAM_H_
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#define STREAM_H_
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#include <hardware/camera3.h>
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#include <hardware/gralloc.h>
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#include <system/graphics.h>
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#include <utils/Mutex.h>
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#include <utils/Vector.h>
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namespace usb_camera_hal {
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// Stream represents a single input or output stream for a camera device.
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class Stream {
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public:
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Stream(int id, camera3_stream_t *s);
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~Stream();
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// validate that a stream's parameters match this stream's parameters
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bool isValidReuseStream(int id, camera3_stream_t *s);
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void setUsage(uint32_t usage);
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void setMaxBuffers(uint32_t max_buffers);
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int getType();
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bool isInputType();
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bool isOutputType();
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const char* typeToString(int type);
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const char* formatToString(int format);
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void dump(int fd);
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// This stream is being reused. Used in stream configuration passes
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bool mReuse;
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private:
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// The camera device id this stream belongs to
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const int mId;
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// Handle to framework's stream, used as a cookie for buffers
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camera3_stream_t *mStream;
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// Array of handles to buffers currently in use by the stream
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android::Vector<buffer_handle_t *> mBuffers;
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// Lock protecting the Stream object for modifications
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android::Mutex mLock;
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};
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} // namespace usb_camera_hal
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#endif // STREAM_H_
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