1/*
2 * Copyright (C) 2010 The Android Open Source Project
3 * Copyright (C) 2012, The Linux Foundation. All rights reserved.
4 *
5 * Not a Contribution, Apache license notifications and license are
6 * retained 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#ifndef HWC_FBUPDATE_H
21#define HWC_FBUPDATE_H
22#include "hwc_utils.h"
23#include "overlay.h"
24
25#define LIKELY( exp )       (__builtin_expect( (exp) != 0, true  ))
26#define UNLIKELY( exp )     (__builtin_expect( (exp) != 0, false ))
27
28namespace overlay {
29    class Rotator;
30}
31
32namespace qhwc {
33namespace ovutils = overlay::utils;
34
35//Framebuffer update Interface
36class IFBUpdate {
37public:
38    explicit IFBUpdate(hwc_context_t *ctx, const int& dpy);
39    virtual ~IFBUpdate() {};
40    // Sets up members and prepares overlay if conditions are met
41    virtual bool prepare(hwc_context_t *ctx, hwc_display_contents_1 *list,
42            hwc_rect_t fbUpdatingRect, int fbZorder) = 0;
43    virtual bool prepareAndValidate(hwc_context_t *ctx,
44            hwc_display_contents_1 *list, int fbZorder);
45    // Draws layer
46    virtual bool draw(hwc_context_t *ctx, private_handle_t *hnd) = 0;
47    //Reset values
48    virtual void reset();
49    //Factory method that returns a low-res or high-res version
50    static IFBUpdate *getObject(hwc_context_t *ctx, const int& dpy);
51
52protected:
53    const int mDpy; // display to update
54    bool mModeOn; // if prepare happened
55    overlay::Rotator *mRot;
56    int mAlignedFBWidth;
57    int mAlignedFBHeight;
58    int mTileEnabled;
59};
60
61//Non-Split panel handler.
62class FBUpdateNonSplit : public IFBUpdate {
63public:
64    explicit FBUpdateNonSplit(hwc_context_t *ctx, const int& dpy);
65    virtual ~FBUpdateNonSplit() {};
66    bool prepare(hwc_context_t *ctx, hwc_display_contents_1 *list,
67            hwc_rect_t fbUpdatingRect, int fbZorder);
68    bool draw(hwc_context_t *ctx, private_handle_t *hnd);
69    void reset();
70private:
71    bool configure(hwc_context_t *ctx, hwc_display_contents_1 *list,
72            hwc_rect_t fbUpdatingRect, int fbZorder);
73    bool preRotateExtDisplay(hwc_context_t *ctx,
74                                 hwc_layer_1_t *layer,
75                                 ovutils::Whf &info,
76                                 hwc_rect_t& sourceCrop,
77                                 ovutils::eMdpFlags& mdpFlags,
78                                 int& rotFlags);
79    ovutils::eDest mDest; //pipe to draw on
80};
81
82//Split panel handler.
83class FBUpdateSplit : public IFBUpdate {
84public:
85    explicit FBUpdateSplit(hwc_context_t *ctx, const int& dpy);
86    virtual ~FBUpdateSplit() {};
87    bool prepare(hwc_context_t *ctx, hwc_display_contents_1 *list,
88            hwc_rect_t fbUpdatingRect, int fbZorder);
89    bool draw(hwc_context_t *ctx, private_handle_t *hnd);
90    void reset();
91
92protected:
93    virtual bool configure(hwc_context_t *ctx, hwc_display_contents_1 *list,
94            hwc_rect_t fbUpdatingRect, int fbZorder);
95    ovutils::eDest mDestLeft; //left pipe to draw on
96    ovutils::eDest mDestRight; //right pipe to draw on
97};
98
99//Source Split Handler
100class FBSrcSplit : public FBUpdateSplit {
101public:
102    explicit FBSrcSplit(hwc_context_t *ctx, const int& dpy);
103    virtual ~FBSrcSplit() {};
104private:
105    bool configure(hwc_context_t *ctx, hwc_display_contents_1 *list,
106            hwc_rect_t fbUpdatingRect, int fbZorder);
107};
108
109}; //namespace qhwc
110
111#endif //HWC_FBUPDATE_H
112