summaryrefslogtreecommitdiffstats
path: root/include/ui/GraphicBuffer.h
blob: 3cf628c209610d9216364775593170ac61ed4c52 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
/*
 * Copyright (C) 2007 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef ANDROID_GRAPHIC_BUFFER_H
#define ANDROID_GRAPHIC_BUFFER_H

#include <stdint.h>
#include <sys/types.h>

#include <ui/ANativeObjectBase.h>
#include <ui/PixelFormat.h>
#include <ui/Rect.h>
#include <utils/Flattenable.h>
#include <utils/RefBase.h>


struct ANativeWindowBuffer;

namespace android {

class GraphicBufferMapper;

// ===========================================================================
// GraphicBuffer
// ===========================================================================

class GraphicBuffer
    : public ANativeObjectBase< ANativeWindowBuffer, GraphicBuffer, RefBase >,
      public Flattenable<GraphicBuffer>
{
    friend class Flattenable<GraphicBuffer>;
public:

    enum {
        USAGE_SW_READ_NEVER     = GRALLOC_USAGE_SW_READ_NEVER,
        USAGE_SW_READ_RARELY    = GRALLOC_USAGE_SW_READ_RARELY,
        USAGE_SW_READ_OFTEN     = GRALLOC_USAGE_SW_READ_OFTEN,
        USAGE_SW_READ_MASK      = GRALLOC_USAGE_SW_READ_MASK,
        
        USAGE_SW_WRITE_NEVER    = GRALLOC_USAGE_SW_WRITE_NEVER,
        USAGE_SW_WRITE_RARELY   = GRALLOC_USAGE_SW_WRITE_RARELY,
        USAGE_SW_WRITE_OFTEN    = GRALLOC_USAGE_SW_WRITE_OFTEN,
        USAGE_SW_WRITE_MASK     = GRALLOC_USAGE_SW_WRITE_MASK,

        USAGE_SOFTWARE_MASK     = USAGE_SW_READ_MASK|USAGE_SW_WRITE_MASK,

        USAGE_PROTECTED         = GRALLOC_USAGE_PROTECTED,

        USAGE_HW_TEXTURE        = GRALLOC_USAGE_HW_TEXTURE,
        USAGE_HW_RENDER         = GRALLOC_USAGE_HW_RENDER,
        USAGE_HW_2D             = GRALLOC_USAGE_HW_2D,
        USAGE_HW_COMPOSER       = GRALLOC_USAGE_HW_COMPOSER,
        USAGE_HW_VIDEO_ENCODER  = GRALLOC_USAGE_HW_VIDEO_ENCODER,
        USAGE_HW_MASK           = GRALLOC_USAGE_HW_MASK
    };

    GraphicBuffer();

    // creates w * h buffer
    GraphicBuffer(uint32_t w, uint32_t h, PixelFormat format, uint32_t usage);

    // create a buffer from an existing handle
    GraphicBuffer(uint32_t w, uint32_t h, PixelFormat format, uint32_t usage,
            uint32_t stride, native_handle_t* handle, bool keepOwnership);

    // create a buffer from an existing ANativeWindowBuffer
    GraphicBuffer(ANativeWindowBuffer* buffer, bool keepOwnership);

    // return status
    status_t initCheck() const;

    uint32_t getWidth() const           { return width; }
    uint32_t getHeight() const          { return height; }
    uint32_t getStride() const          { return stride; }
    uint32_t getUsage() const           { return usage; }
    PixelFormat getPixelFormat() const  { return format; }
    Rect getBounds() const              { return Rect(width, height); }
    
    status_t reallocate(uint32_t w, uint32_t h, PixelFormat f, uint32_t usage);

    status_t lock(uint32_t usage, void** vaddr);
    status_t lock(uint32_t usage, const Rect& rect, void** vaddr);
    // For HAL_PIXEL_FORMAT_YCbCr_420_888
    status_t lockYCbCr(uint32_t usage, android_ycbcr *ycbcr);
    status_t lockYCbCr(uint32_t usage, const Rect& rect, android_ycbcr *ycbcr);
    status_t unlock();

    ANativeWindowBuffer* getNativeBuffer() const;

    // for debugging
    static void dumpAllocationsToSystemLog();

    // Flattenable protocol
    size_t getFlattenedSize() const;
    size_t getFdCount() const;
    status_t flatten(void*& buffer, size_t& size, int*& fds, size_t& count) const;
    status_t unflatten(void const*& buffer, size_t& size, int const*& fds, size_t& count);

private:
    ~GraphicBuffer();

    enum {
        ownNone   = 0,
        ownHandle = 1,
        ownData   = 2,
    };

    inline const GraphicBufferMapper& getBufferMapper() const {
        return mBufferMapper;
    }
    inline GraphicBufferMapper& getBufferMapper() {
        return mBufferMapper;
    }
    uint8_t mOwner;

private:
    friend class Surface;
    friend class BpSurface;
    friend class BnSurface;
    friend class LightRefBase<GraphicBuffer>;
    GraphicBuffer(const GraphicBuffer& rhs);
    GraphicBuffer& operator = (const GraphicBuffer& rhs);
    const GraphicBuffer& operator = (const GraphicBuffer& rhs) const;

    status_t initSize(uint32_t w, uint32_t h, PixelFormat format, 
            uint32_t usage);

    void free_handle();

    GraphicBufferMapper& mBufferMapper;
    ssize_t mInitCheck;

    // If we're wrapping another buffer then this reference will make sure it
    // doesn't get freed.
    sp<ANativeWindowBuffer> mWrappedBuffer;
};

}; // namespace android

#endif // ANDROID_GRAPHIC_BUFFER_H