1/*
2 * Copyright (C) 2010 The Android Open Source Project
3 * Copyright (C) 2012-2014, The Linux Foundation. All rights reserved.
4 *
5 * Not a Contribution, Apache license notifications and license are retained
6 * for attribution purposes only.
7 *
8 * Licensed under the Apache License, Version 2.0 (the "License");
9 * you may not use this file except in compliance with the License.
10 * You may obtain a copy of the License at
11 *
12 *      http://www.apache.org/licenses/LICENSE-2.0
13 *
14 * Unless required by applicable law or agreed to in writing, software
15 * distributed under the License is distributed on an "AS IS" BASIS,
16 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17 * See the License for the specific language governing permissions and
18 * limitations under the License.
19 */
20
21#ifndef HWC_VIRTUAL
22#define HWC_VIRTUAL
23
24#include <hwc_utils.h>
25#include <virtual.h>
26
27namespace qhwc {
28namespace ovutils = overlay::utils;
29
30// Base and abstract class for VDS and V4L2 wfd design.
31class HWCVirtualBase {
32public:
33    explicit HWCVirtualBase(){};
34    virtual ~HWCVirtualBase(){};
35    // instantiates and returns the pointer to VDS or V4L2 object.
36    static HWCVirtualBase* getObject(bool isVDSEnabled);
37    virtual int prepare(hwc_composer_device_1 *dev,
38                          hwc_display_contents_1_t* list) = 0;
39    virtual int set(hwc_context_t *ctx, hwc_display_contents_1_t *list) = 0;
40    virtual void init(hwc_context_t *ctx) = 0;
41    virtual void destroy(hwc_context_t *ctx, size_t numDisplays,
42                       hwc_display_contents_1_t** displays) = 0;
43    virtual void pause(hwc_context_t* ctx, int dpy) = 0;
44    virtual void resume(hwc_context_t* ctx, int dpy) = 0;
45};
46
47class HWCVirtualVDS : public HWCVirtualBase {
48public:
49    explicit HWCVirtualVDS(){};
50    virtual ~HWCVirtualVDS(){};
51    // Chooses composition type and configures pipe for each layer in virtual
52    // display list
53    virtual int prepare(hwc_composer_device_1 *dev,
54                          hwc_display_contents_1_t* list);
55    // Queues the buffer for each layer in virtual display list and call display
56    // commit.
57    virtual int set(hwc_context_t *ctx, hwc_display_contents_1_t *list);
58    // instantiates mdpcomp, copybit and fbupdate objects and initialize those
59    // objects for virtual display during virtual display connect.
60    virtual void init(hwc_context_t *ctx);
61    // Destroys mdpcomp, copybit and fbupdate objects and for virtual display
62    // during virtual display disconnect.
63    virtual void destroy(hwc_context_t *ctx, size_t numDisplays,
64                       hwc_display_contents_1_t** displays);
65    virtual void pause(hwc_context_t* ctx, int dpy);
66    virtual void resume(hwc_context_t* ctx, int dpy);
67};
68
69class HWCVirtualV4L2 : public HWCVirtualBase {
70public:
71    explicit HWCVirtualV4L2(){};
72    virtual ~HWCVirtualV4L2(){};
73    // Chooses composition type and configures pipe for each layer in virtual
74    // display list
75    virtual int prepare(hwc_composer_device_1 *dev,
76                         hwc_display_contents_1_t* list);
77    // Queues the buffer for each layer in virtual display list and call
78    // display commit.
79    virtual int set(hwc_context_t *ctx, hwc_display_contents_1_t *list);
80    // instantiates mdpcomp, copybit and fbupdate objects and initialize those
81    // objects for virtual display during virtual display connect. This function
82    // is no-op for V4L2 design
83    virtual void init(hwc_context_t *) {};
84    // Destroys mdpcomp, copybit and fbupdate objects and for virtual display
85    // during virtual display disconnect. This function is no-op for V4L2 design
86    virtual void destroy(hwc_context_t *, size_t ,
87                       hwc_display_contents_1_t** ) {};
88    virtual void pause(hwc_context_t* ctx, int dpy);
89    virtual void resume(hwc_context_t* ctx, int dpy);
90};
91
92}; //namespace
93#endif
94