1 #ifndef _DERINGBUFFER_H
2 #define _DERINGBUFFER_H
3 /*-------------------------------------------------------------------------
4  * drawElements Stream Library
5  * ---------------------------
6  *
7  * Copyright 2014 The Android Open Source Project
8  *
9  * Licensed under the Apache License, Version 2.0 (the "License");
10  * you may not use this file except in compliance with the License.
11  * You may obtain a copy of the License at
12  *
13  *      http://www.apache.org/licenses/LICENSE-2.0
14  *
15  * Unless required by applicable law or agreed to in writing, software
16  * distributed under the License is distributed on an "AS IS" BASIS,
17  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
18  * See the License for the specific language governing permissions and
19  * limitations under the License.
20  *
21  *//*!
22  * \file
23  * \brief Thread safe ringbuffer
24  *//*--------------------------------------------------------------------*/
25 
26 #include "deInStream.h"
27 #include "deOutStream.h"
28 
29 DE_BEGIN_EXTERN_C
30 
31 typedef struct deRingbuffer_s deRingbuffer;
32 
33 deRingbuffer*	deRingbuffer_create		(deInt32 blockSize, deInt32 blockCount);
34 
35 /* Changes state of ringbuffer to stopping which will make all subsequent writes
36  * to producer stream fail and notifies consumer with DE_STREAMRESULT_END_OF_STREAM
37  * when buffer is empty.
38  */
39 void			deRingbuffer_stop		(deRingbuffer* ringbuffer);
40 void			deRingbuffer_destroy	(deRingbuffer* ringbuffer);
41 
42 void			deProducerStream_init	(deOutStream* stream, deRingbuffer* buffer);
43 void			deConsumerStream_init	(deInStream* stream, deRingbuffer* buffer);
44 
45 DE_END_EXTERN_C
46 
47 #endif /* _DERINGBUFFER_H */
48