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1 /*
2 * Copyright (c) 2011-2013, The Linux Foundation. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met:
7 *    * Redistributions of source code must retain the above copyright
8 *      notice, this list of conditions and the following disclaimer.
9 *    * Redistributions in binary form must reproduce the above
10 *      copyright notice, this list of conditions and the following
11 *      disclaimer in the documentation and/or other materials provided
12 *      with the distribution.
13 *    * Neither the name of The Linux Foundation nor the names of its
14 *      contributors may be used to endorse or promote products derived
15 *      from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
21 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
24 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
25 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
26 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
27 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29 
30 #ifndef OVERLAY_GENERIC_PIPE_H
31 #define OVERLAY_GENERIC_PIPE_H
32 
33 #include "overlayUtils.h"
34 #include "overlayCtrlData.h"
35 
36 namespace overlay {
37 
38 class GenericPipe : utils::NoCopy {
39 public:
40     /* ctor */
41     explicit GenericPipe(int dpy);
42     /* dtor */
43     ~GenericPipe();
44     bool init();
45     bool close();
46     /* Control APIs */
47     /* set source using whf, orient and wait flag */
48     void setSource(const utils::PipeArgs& args);
49     /* set crop a.k.a the region of interest */
50     void setCrop(const utils::Dim& d);
51     /* set orientation*/
52     void setTransform(const utils::eTransform& param);
53     /* set mdp posision using dim */
54     void setPosition(const utils::Dim& dim);
55     /* set visual param */
56     bool setVisualParams(const MetaData_t &metadata);
57     /* commit changes to the overlay "set"*/
58     bool commit();
59     /* Data APIs */
60     /* queue buffer to the overlay */
61     bool queueBuffer(int fd, uint32_t offset);
62     /* return cached startup args */
63     const utils::PipeArgs& getArgs() const;
64     /* retrieve cached crop data */
65     utils::Dim getCrop() const;
66     /* is closed */
67     bool isClosed() const;
68     /* is open */
69     bool isOpen() const;
70     /* return Ctrl fd. Used for S3D */
71     int getCtrlFd() const;
72     /* dump the state of the object */
73     void dump() const;
74     /* Return the dump in the specified buffer */
75     void getDump(char *buf, size_t len);
76     /* Marks the pipe for forcible setting of params
77      * even if they haven't changed
78      */
79     void forceSet();
80 
81 private:
82     /* set Closed pipe */
83     bool setClosed();
84 
85     int mDpy;
86     /* Ctrl/Data aggregator */
87     CtrlData mCtrlData;
88     //Whether we will do downscale opt. This is just a request. If the frame is
89     //not a candidate, we might not do it.
90     bool mRotDownscaleOpt;
91     /* Pipe open or closed */
92     enum ePipeState {
93         CLOSED,
94         OPEN
95     };
96     ePipeState pipeState;
97 };
98 
99 } //namespace overlay
100 
101 #endif // OVERLAY_GENERIC_PIPE_H
102