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
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
|
/*
**
** Copyright 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.
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <cutils/log.h>
#include <utils/String8.h>
#include <ui/Rect.h>
#include <EGL/egl.h>
#include <hardware/hardware.h>
#include <gui/SurfaceTextureClient.h>
#include <ui/GraphicBuffer.h>
#include "DisplayHardware/FramebufferSurface.h"
// ----------------------------------------------------------------------------
namespace android {
// ----------------------------------------------------------------------------
/*
* This implements the (main) framebuffer management. This class is used
* mostly by SurfaceFlinger, but also by command line GL application.
*
*/
FramebufferSurface::FramebufferSurface()
: SurfaceTextureClient(),
fbDev(0), mCurrentBufferIndex(-1), mUpdateOnDemand(false)
{
hw_module_t const* module;
if (hw_get_module(GRALLOC_HARDWARE_MODULE_ID, &module) == 0) {
int stride;
int err;
int i;
err = framebuffer_open(module, &fbDev);
ALOGE_IF(err, "couldn't open framebuffer HAL (%s)", strerror(-err));
// bail out if we can't initialize the modules
if (!fbDev)
return;
mUpdateOnDemand = (fbDev->setUpdateRect != 0);
const_cast<uint32_t&>(ANativeWindow::flags) = fbDev->flags;
const_cast<float&>(ANativeWindow::xdpi) = fbDev->xdpi;
const_cast<float&>(ANativeWindow::ydpi) = fbDev->ydpi;
const_cast<int&>(ANativeWindow::minSwapInterval) = fbDev->minSwapInterval;
const_cast<int&>(ANativeWindow::maxSwapInterval) = fbDev->maxSwapInterval;
} else {
ALOGE("Couldn't get gralloc module");
}
class GraphicBufferAlloc : public BnGraphicBufferAlloc {
public:
GraphicBufferAlloc() { };
virtual ~GraphicBufferAlloc() { };
virtual sp<GraphicBuffer> createGraphicBuffer(uint32_t w, uint32_t h,
PixelFormat format, uint32_t usage, status_t* error) {
sp<GraphicBuffer> graphicBuffer(new GraphicBuffer(w, h, format, usage));
return graphicBuffer;
}
};
mBufferQueue = new BufferQueue(true, NUM_FRAME_BUFFERS, new GraphicBufferAlloc());
mBufferQueue->setConsumerUsageBits(GRALLOC_USAGE_HW_FB|GRALLOC_USAGE_HW_RENDER|GRALLOC_USAGE_HW_COMPOSER);
mBufferQueue->setDefaultBufferFormat(fbDev->format);
mBufferQueue->setDefaultBufferSize(fbDev->width, fbDev->height);
mBufferQueue->setSynchronousMode(true);
mBufferQueue->setBufferCountServer(NUM_FRAME_BUFFERS);
setISurfaceTexture(mBufferQueue);
}
void FramebufferSurface::onFirstRef() {
class Listener : public BufferQueue::ConsumerListener {
const wp<FramebufferSurface> that;
virtual ~Listener() { }
virtual void onBuffersReleased() { }
void onFrameAvailable() {
sp<FramebufferSurface> self = that.promote();
if (self != NULL) {
BufferQueue::BufferItem item;
status_t err = self->mBufferQueue->acquireBuffer(&item);
if (err == 0) {
if (item.mGraphicBuffer != 0) {
self->mBuffers[item.mBuf] = item.mGraphicBuffer;
}
if (item.mFence.get()) {
err = item.mFence->wait(Fence::TIMEOUT_NEVER);
if (err) {
ALOGE("failed waiting for buffer's fence: %d", err);
self->mBufferQueue->releaseBuffer(item.mBuf,
EGL_NO_DISPLAY, EGL_NO_SYNC_KHR,
item.mFence);
return;
}
}
self->fbDev->post(self->fbDev, self->mBuffers[item.mBuf]->handle);
if (self->mCurrentBufferIndex >= 0) {
self->mBufferQueue->releaseBuffer(self->mCurrentBufferIndex,
EGL_NO_DISPLAY, EGL_NO_SYNC_KHR, Fence::NO_FENCE);
}
self->mCurrentBufferIndex = item.mBuf;
}
}
}
public:
Listener(const sp<FramebufferSurface>& that) : that(that) { }
};
mBufferQueue->setConsumerName(String8("FramebufferSurface"));
mBufferQueue->consumerConnect(new Listener(this));
}
FramebufferSurface::~FramebufferSurface() {
if (fbDev) {
framebuffer_close(fbDev);
}
}
status_t FramebufferSurface::setUpdateRectangle(const Rect& r)
{
if (!mUpdateOnDemand) {
return INVALID_OPERATION;
}
return fbDev->setUpdateRect(fbDev, r.left, r.top, r.width(), r.height());
}
status_t FramebufferSurface::compositionComplete()
{
if (fbDev->compositionComplete) {
return fbDev->compositionComplete(fbDev);
}
return INVALID_OPERATION;
}
void FramebufferSurface::dump(String8& result) {
if (fbDev->common.version >= 1 && fbDev->dump) {
const size_t SIZE = 4096;
char buffer[SIZE];
fbDev->dump(fbDev, buffer, SIZE);
result.append(buffer);
}
}
int FramebufferSurface::query(int what, int* value) const {
Mutex::Autolock _l(mLock);
framebuffer_device_t* fb = fbDev;
switch (what) {
case NATIVE_WINDOW_DEFAULT_WIDTH:
case NATIVE_WINDOW_WIDTH:
*value = fb->width;
return NO_ERROR;
case NATIVE_WINDOW_DEFAULT_HEIGHT:
case NATIVE_WINDOW_HEIGHT:
*value = fb->height;
return NO_ERROR;
case NATIVE_WINDOW_FORMAT:
*value = fb->format;
return NO_ERROR;
case NATIVE_WINDOW_CONCRETE_TYPE:
*value = NATIVE_WINDOW_FRAMEBUFFER;
return NO_ERROR;
case NATIVE_WINDOW_QUEUES_TO_WINDOW_COMPOSER:
*value = 0;
return NO_ERROR;
case NATIVE_WINDOW_TRANSFORM_HINT:
*value = 0;
return NO_ERROR;
}
return SurfaceTextureClient::query(what, value);
}
// ----------------------------------------------------------------------------
}; // namespace android
// ----------------------------------------------------------------------------
|
