OSDN Git Service

Rename dump methods to dumpState
[android-x86/frameworks-native.git] / services / surfaceflinger / DisplayHardware / FramebufferSurface.cpp
1 /*
2  **
3  ** Copyright 2012 The Android Open Source Project
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 // #define LOG_NDEBUG 0
19 #undef LOG_TAG
20 #define LOG_TAG "FramebufferSurface"
21
22 #include <stdlib.h>
23 #include <stdio.h>
24 #include <string.h>
25 #include <errno.h>
26
27 #include <cutils/log.h>
28
29 #include <utils/String8.h>
30
31 #include <ui/Rect.h>
32
33 #include <EGL/egl.h>
34
35 #include <hardware/hardware.h>
36 #include <gui/BufferItem.h>
37 #include <gui/GraphicBufferAlloc.h>
38 #include <gui/Surface.h>
39 #include <ui/GraphicBuffer.h>
40
41 #include "FramebufferSurface.h"
42 #include "HWComposer.h"
43
44 #ifndef NUM_FRAMEBUFFER_SURFACE_BUFFERS
45 #define NUM_FRAMEBUFFER_SURFACE_BUFFERS (2)
46 #endif
47
48 // ----------------------------------------------------------------------------
49 namespace android {
50 // ----------------------------------------------------------------------------
51
52 /*
53  * This implements the (main) framebuffer management. This class is used
54  * mostly by SurfaceFlinger, but also by command line GL application.
55  *
56  */
57
58 FramebufferSurface::FramebufferSurface(HWComposer& hwc, int disp,
59         const sp<IGraphicBufferConsumer>& consumer) :
60     ConsumerBase(consumer),
61     mDisplayType(disp),
62     mCurrentBufferSlot(-1),
63     mCurrentBuffer(),
64     mCurrentFence(Fence::NO_FENCE),
65 #ifdef USE_HWC2
66     mHwc(hwc),
67     mHasPendingRelease(false),
68     mPreviousBufferSlot(BufferQueue::INVALID_BUFFER_SLOT),
69     mPreviousBuffer()
70 #else
71     mHwc(hwc)
72 #endif
73 {
74 #ifdef USE_HWC2
75     ALOGV("Creating for display %d", disp);
76 #endif
77
78     mName = "FramebufferSurface";
79     mConsumer->setConsumerName(mName);
80     mConsumer->setConsumerUsageBits(GRALLOC_USAGE_HW_FB |
81                                        GRALLOC_USAGE_HW_RENDER |
82                                        GRALLOC_USAGE_HW_COMPOSER);
83 #ifdef USE_HWC2
84     const auto& activeConfig = mHwc.getActiveConfig(disp);
85     mConsumer->setDefaultBufferSize(activeConfig->getWidth(),
86             activeConfig->getHeight());
87 #else
88     mConsumer->setDefaultBufferFormat(mHwc.getFormat(disp));
89     mConsumer->setDefaultBufferSize(mHwc.getWidth(disp), mHwc.getHeight(disp));
90 #endif
91     mConsumer->setMaxAcquiredBufferCount(NUM_FRAMEBUFFER_SURFACE_BUFFERS - 1);
92 }
93
94 status_t FramebufferSurface::beginFrame(bool /*mustRecompose*/) {
95     return NO_ERROR;
96 }
97
98 status_t FramebufferSurface::prepareFrame(CompositionType /*compositionType*/) {
99     return NO_ERROR;
100 }
101
102 status_t FramebufferSurface::advanceFrame() {
103 #ifdef USE_HWC2
104     sp<GraphicBuffer> buf;
105     sp<Fence> acquireFence(Fence::NO_FENCE);
106     android_dataspace_t dataspace = HAL_DATASPACE_UNKNOWN;
107     status_t result = nextBuffer(buf, acquireFence, dataspace);
108     if (result != NO_ERROR) {
109         ALOGE("error latching next FramebufferSurface buffer: %s (%d)",
110                 strerror(-result), result);
111         return result;
112     }
113     result = mHwc.setClientTarget(mDisplayType, acquireFence, buf, dataspace);
114     if (result != NO_ERROR) {
115         ALOGE("error posting framebuffer: %d", result);
116     }
117     return result;
118 #else
119     // Once we remove FB HAL support, we can call nextBuffer() from here
120     // instead of using onFrameAvailable(). No real benefit, except it'll be
121     // more like VirtualDisplaySurface.
122     return NO_ERROR;
123 #endif
124 }
125
126 #ifdef USE_HWC2
127 status_t FramebufferSurface::nextBuffer(sp<GraphicBuffer>& outBuffer,
128         sp<Fence>& outFence, android_dataspace_t& outDataspace) {
129 #else
130 status_t FramebufferSurface::nextBuffer(sp<GraphicBuffer>& outBuffer, sp<Fence>& outFence) {
131 #endif
132     Mutex::Autolock lock(mMutex);
133
134     BufferItem item;
135     status_t err = acquireBufferLocked(&item, 0);
136     if (err == BufferQueue::NO_BUFFER_AVAILABLE) {
137         outBuffer = mCurrentBuffer;
138         return NO_ERROR;
139     } else if (err != NO_ERROR) {
140         ALOGE("error acquiring buffer: %s (%d)", strerror(-err), err);
141         return err;
142     }
143
144     // If the BufferQueue has freed and reallocated a buffer in mCurrentSlot
145     // then we may have acquired the slot we already own.  If we had released
146     // our current buffer before we call acquireBuffer then that release call
147     // would have returned STALE_BUFFER_SLOT, and we would have called
148     // freeBufferLocked on that slot.  Because the buffer slot has already
149     // been overwritten with the new buffer all we have to do is skip the
150     // releaseBuffer call and we should be in the same state we'd be in if we
151     // had released the old buffer first.
152     if (mCurrentBufferSlot != BufferQueue::INVALID_BUFFER_SLOT &&
153         item.mSlot != mCurrentBufferSlot) {
154 #ifdef USE_HWC2
155         mHasPendingRelease = true;
156         mPreviousBufferSlot = mCurrentBufferSlot;
157         mPreviousBuffer = mCurrentBuffer;
158 #else
159         // Release the previous buffer.
160         err = releaseBufferLocked(mCurrentBufferSlot, mCurrentBuffer,
161                 EGL_NO_DISPLAY, EGL_NO_SYNC_KHR);
162         if (err < NO_ERROR) {
163             ALOGE("error releasing buffer: %s (%d)", strerror(-err), err);
164             return err;
165         }
166 #endif
167     }
168     mCurrentBufferSlot = item.mSlot;
169     mCurrentBuffer = mSlots[mCurrentBufferSlot].mGraphicBuffer;
170     mCurrentFence = item.mFence;
171
172     outFence = item.mFence;
173     outBuffer = mCurrentBuffer;
174 #ifdef USE_HWC2
175     outDataspace = item.mDataSpace;
176 #endif
177     return NO_ERROR;
178 }
179
180 #ifndef USE_HWC2
181 // Overrides ConsumerBase::onFrameAvailable(), does not call base class impl.
182 void FramebufferSurface::onFrameAvailable(const BufferItem& /* item */) {
183     sp<GraphicBuffer> buf;
184     sp<Fence> acquireFence;
185     status_t err = nextBuffer(buf, acquireFence);
186     if (err != NO_ERROR) {
187         ALOGE("error latching nnext FramebufferSurface buffer: %s (%d)",
188                 strerror(-err), err);
189         return;
190     }
191     err = mHwc.fbPost(mDisplayType, acquireFence, buf);
192     if (err != NO_ERROR) {
193         ALOGE("error posting framebuffer: %d", err);
194     }
195 }
196 #endif
197
198 void FramebufferSurface::freeBufferLocked(int slotIndex) {
199     ConsumerBase::freeBufferLocked(slotIndex);
200     if (slotIndex == mCurrentBufferSlot) {
201         mCurrentBufferSlot = BufferQueue::INVALID_BUFFER_SLOT;
202     }
203 }
204
205 void FramebufferSurface::onFrameCommitted() {
206 #ifdef USE_HWC2
207     if (mHasPendingRelease) {
208         sp<Fence> fence = mHwc.getRetireFence(mDisplayType);
209         if (fence->isValid()) {
210             status_t result = addReleaseFence(mPreviousBufferSlot,
211                     mPreviousBuffer, fence);
212             ALOGE_IF(result != NO_ERROR, "onFrameCommitted: failed to add the"
213                     " fence: %s (%d)", strerror(-result), result);
214         }
215         status_t result = releaseBufferLocked(mPreviousBufferSlot,
216                 mPreviousBuffer, EGL_NO_DISPLAY, EGL_NO_SYNC_KHR);
217         ALOGE_IF(result != NO_ERROR, "onFrameCommitted: error releasing buffer:"
218                 " %s (%d)", strerror(-result), result);
219
220         mPreviousBuffer.clear();
221         mHasPendingRelease = false;
222     }
223 #else
224     sp<Fence> fence = mHwc.getAndResetReleaseFence(mDisplayType);
225     if (fence->isValid() &&
226             mCurrentBufferSlot != BufferQueue::INVALID_BUFFER_SLOT) {
227         status_t err = addReleaseFence(mCurrentBufferSlot,
228                 mCurrentBuffer, fence);
229         ALOGE_IF(err, "setReleaseFenceFd: failed to add the fence: %s (%d)",
230                 strerror(-err), err);
231     }
232 #endif
233 }
234
235 #ifndef USE_HWC2
236 status_t FramebufferSurface::compositionComplete()
237 {
238     return mHwc.fbCompositionComplete();
239 }
240 #endif
241
242 void FramebufferSurface::dumpAsString(String8& result) const {
243     ConsumerBase::dumpState(result);
244 }
245
246 void FramebufferSurface::dumpLocked(String8& result, const char* prefix) const
247 {
248 #ifndef USE_HWC2
249     mHwc.fbDump(result);
250 #endif
251     ConsumerBase::dumpLocked(result, prefix);
252 }
253
254 const sp<Fence>& FramebufferSurface::getClientTargetAcquireFence() const {
255     return mCurrentFence;
256 }
257
258 // ----------------------------------------------------------------------------
259 }; // namespace android
260 // ----------------------------------------------------------------------------