hwc_utils.h revision 29a26818d7294055539167b2fbfdaa168bcf725c 
1/*
2 * Copyright (C) 2010 The Android Open Source Project
3 * Copyright (C) 2012, Code Aurora Forum. All rights reserved.
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 *      http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18#ifndef HWC_UTILS_H
19#define HWC_UTILS_H
20#include <cutils/log.h>
21#include <gralloc_priv.h>
22#include <hardware/hwcomposer.h>
23#include <hardware/hardware.h>
24#include <hardware/gralloc.h>
25#include <stdlib.h>
26#include <string.h>
27#include <fb_priv.h>
28#include <overlay.h>
29#include <qcom_ui.h>
30#include <genlock.h>
31#include "hwc_qbuf.h"
32
33#define ALIGN(x, align)     (((x) + ((align)-1)) & ~((align)-1))
34#define LIKELY( exp )       (__builtin_expect( (exp) != 0, true  ))
35#define UNLIKELY( exp )     (__builtin_expect( (exp) != 0, false ))
36
37struct hwc_context_t;
38namespace qhwc {
39
40// -----------------------------------------------------------------------------
41// Utility functions - implemented in hwc_utils.cpp
42void dumpLayer(hwc_layer_t const* l);
43void getLayerStats(hwc_context_t *ctx, const hwc_layer_list_t *list);
44void handleYUV(hwc_context_t *ctx, hwc_layer_t *layer);
45void initContext(hwc_context_t *ctx);
46void closeContext(hwc_context_t *ctx);
47void openFramebufferDevice(hwc_context_t *ctx);
48
49// Inline utility functions
50static inline bool isSkipLayer(const hwc_layer_t* l) {
51    return (UNLIKELY(l && (l->flags & HWC_SKIP_LAYER)));
52}
53
54// Returns true if the buffer is yuv
55static inline bool isYuvBuffer(const private_handle_t* hnd) {
56    return (hnd && (hnd->bufferType == BUFFER_TYPE_VIDEO));
57}
58
59//Return true if buffer is marked locked
60static inline bool isBufferLocked(const private_handle_t* hnd) {
61    return (hnd && (private_handle_t::PRIV_FLAGS_HWC_LOCK & hnd->flags));
62}
63
64// -----------------------------------------------------------------------------
65// Overlay specific functions - inline or implemented in hwc_overlay.cpp
66bool prepareOverlay(hwc_context_t *ctx, hwc_layer_t *layer);
67//XXX: Refine draw functions
68bool drawLayerUsingOverlay(hwc_context_t *ctx, hwc_layer_t *layer);
69//XXX: Refine
70void cleanOverlays(hwc_context_t *ctx );
71void setOverlayState(hwc_context_t* ctx, ovutils::eOverlayState state);
72
73// -----------------------------------------------------------------------------
74// Copybit specific functions - inline or implemented in hwc_copybit.cpp
75
76
77
78// -----------------------------------------------------------------------------
79// HDMI specific functions - inline or implemented in hwc_hdmi.cpp
80
81
82
83} //qhwc namespace
84
85
86
87// -----------------------------------------------------------------------------
88// HWC context
89// This structure contains overall state
90struct hwc_context_t {
91    hwc_composer_device_t device;
92    // Layer variables
93    int yuvBufferCount;
94    int hdmiEnabled;
95    int numHwLayers;
96    bool skipComposition;
97
98    //Framebuffer device
99    framebuffer_device_t *fbDev;
100
101    //Overlay object - NULL for non overlay devices
102    overlay::Overlay *mOverlay;
103
104    //QueuedBufferStore to hold buffers for overlay
105    qhwc::QueuedBufferStore *qbuf;
106};
107
108
109
110
111#endif //HWC_UTILS_H
112