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
|
/*
* Copyright 2013 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_SF_DISPLAY_SURFACE_H
#define ANDROID_SF_DISPLAY_SURFACE_H
#include <gui/ConsumerBase.h>
#include <system/window.h>
#include <utils/Errors.h>
#include <utils/RefBase.h>
#include <utils/StrongPointer.h>
// ---------------------------------------------------------------------------
namespace android {
// ---------------------------------------------------------------------------
class IGraphicBufferProducer;
class String8;
#if ANDROID_VERSION >= 21
typedef IGraphicBufferConsumer StreamConsumer;
#else
typedef BufferQueue StreamConsumer;
#endif
class DisplaySurface : public ConsumerBase {
public:
// beginFrame is called at the beginning of the composition loop, before
// the configuration is known. The DisplaySurface should do anything it
// needs to do to enable HWComposer to decide how to compose the frame.
// We pass in mustRecompose so we can keep VirtualDisplaySurface's state
// machine happy without actually queueing a buffer if nothing has changed.
virtual status_t beginFrame(bool mustRecompose) = 0;
// prepareFrame is called after the composition configuration is known but
// before composition takes place. The DisplaySurface can use the
// composition type to decide how to manage the flow of buffers between
// GLES and HWC for this frame.
enum CompositionType {
COMPOSITION_UNKNOWN = 0,
COMPOSITION_GLES = 1,
COMPOSITION_HWC = 2,
COMPOSITION_MIXED = COMPOSITION_GLES | COMPOSITION_HWC
};
virtual status_t prepareFrame(CompositionType compositionType) = 0;
// Should be called when composition rendering is complete for a frame (but
// eglSwapBuffers hasn't necessarily been called). Required by certain
// older drivers for synchronization.
// TODO: Remove this when we drop support for HWC 1.0.
virtual status_t compositionComplete() = 0;
// Inform the surface that GLES composition is complete for this frame, and
// the surface should make sure that HWComposer has the correct buffer for
// this frame. Some implementations may only push a new buffer to
// HWComposer if GLES composition took place, others need to push a new
// buffer on every frame.
//
// advanceFrame must be followed by a call to onFrameCommitted before
// advanceFrame may be called again.
virtual status_t advanceFrame() = 0;
// onFrameCommitted is called after the frame has been committed to the
// hardware composer. The surface collects the release fence for this
// frame's buffer.
virtual void onFrameCommitted() = 0;
virtual void resizeBuffers(const uint32_t w, const uint32_t h) = 0;
// setReleaseFenceFd stores a fence file descriptor that will signal when the
// current buffer is no longer being read. This fence will be returned to
// the producer when the current buffer is released by updateTexImage().
// Multiple fences can be set for a given buffer; they will be merged into
// a single union fence. The SurfaceTexture will close the file descriptor
// when finished with it.
virtual status_t setReleaseFenceFd(int fenceFd) = 0;
virtual int GetPrevDispAcquireFd() = 0;
buffer_handle_t lastHandle;
protected:
DisplaySurface(const sp<StreamConsumer>& sc)
#if ANDROID_VERSION >= 19
: ConsumerBase(sc, true)
#else
: ConsumerBase(sc)
#endif
, lastHandle(0)
{ }
virtual ~DisplaySurface() {}
};
// ---------------------------------------------------------------------------
} // namespace android
// ---------------------------------------------------------------------------
#endif // ANDROID_SF_DISPLAY_SURFACE_H
|
