1 /* Copyright (c) 2012-2016, The Linux Foundation. All rights reserved.
2  *
3  * Redistribution and use in source and binary forms, with or without
4  * modification, are permitted provided that the following conditions are
5  * met:
6  *     * Redistributions of source code must retain the above copyright
7  *       notice, this list of conditions and the following disclaimer.
8  *     * Redistributions in binary form must reproduce the above
9  *       copyright notice, this list of conditions and the following
10  *       disclaimer in the documentation and/or other materials provided
11  *       with the distribution.
12  *     * Neither the name of The Linux Foundation nor the names of its
13  *       contributors may be used to endorse or promote products derived
14  *       from this software without specific prior written permission.
15  *
16  * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
17  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
18  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
23  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
25  * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
26  * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27  *
28  */
29 
30 #ifndef __QCAMERA_ALLOCATOR__
31 #define __QCAMERA_ALLOCATOR__
32 
33 extern "C" {
34 #include "mm_camera_interface.h"
35 }
36 
37 namespace qcamera {
38 
39 class QCameraMemory;
40 class QCameraHeapMemory;
41 
42 typedef struct {
43     int32_t (*bgFunction) (void *);
44     void* bgArgs;
45 } BackgroundTask;
46 
47 class QCameraAllocator {
48 public:
49     virtual QCameraMemory *allocateStreamBuf(cam_stream_type_t stream_type,
50             size_t size, int stride, int scanline, uint8_t &bufferCnt) = 0;
51     virtual int32_t allocateMoreStreamBuf(QCameraMemory *mem_obj,
52             size_t size, uint8_t &bufferCnt) = 0;
53     virtual QCameraHeapMemory *allocateStreamInfoBuf(cam_stream_type_t stream_type) = 0;
54     virtual QCameraHeapMemory *allocateMiscBuf(cam_stream_info_t *streamInfo) = 0;
55     virtual QCameraMemory *allocateStreamUserBuf(cam_stream_info_t *streamInfo) = 0;
56     virtual void waitForDeferredAlloc(cam_stream_type_t stream_type) = 0;
57     virtual uint32_t scheduleBackgroundTask(BackgroundTask* bgTask) = 0;
58     virtual int32_t waitForBackgroundTask(uint32_t &taskId) = 0;
~QCameraAllocator()59     virtual ~QCameraAllocator() {}
60 };
61 
62 }; /* namespace qcamera */
63 #endif /* __QCAMERA_ALLOCATOR__ */
64