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 // TODO(b/129481165): remove the #pragma below and fix conversion issues
19 #pragma clang diagnostic push
20 #pragma clang diagnostic ignored "-Wconversion"
21
22 // #define LOG_NDEBUG 0
23 #undef LOG_TAG
24 #define LOG_TAG "FramebufferSurface"
25
26 #include <errno.h>
27 #include <stdio.h>
28 #include <stdlib.h>
29 #include <string.h>
30
31 #include <utils/String8.h>
32 #include <log/log.h>
33
34 #include <com_android_graphics_libgui_flags.h>
35 #include <gui/BufferItem.h>
36 #include <gui/BufferQueue.h>
37 #include <gui/Surface.h>
38 #include <hardware/hardware.h>
39
40 #include <ui/DebugUtils.h>
41 #include <ui/GraphicBuffer.h>
42 #include <ui/Rect.h>
43
44 #include "FramebufferSurface.h"
45 #include "HWComposer.h"
46 #include "../SurfaceFlinger.h"
47
48 namespace android {
49
50 using ui::Dataspace;
51
52 #if COM_ANDROID_GRAPHICS_LIBGUI_FLAGS(WB_CONSUMER_BASE_OWNS_BQ)
FramebufferSurface(HWComposer & hwc,PhysicalDisplayId displayId,const sp<IGraphicBufferProducer> & producer,const sp<IGraphicBufferConsumer> & consumer,const ui::Size & size,const ui::Size & maxSize)53 FramebufferSurface::FramebufferSurface(HWComposer& hwc, PhysicalDisplayId displayId,
54 const sp<IGraphicBufferProducer>& producer,
55 const sp<IGraphicBufferConsumer>& consumer,
56 const ui::Size& size, const ui::Size& maxSize)
57 : ConsumerBase(producer, consumer),
58 #else
59 FramebufferSurface::FramebufferSurface(HWComposer& hwc, PhysicalDisplayId displayId,
60 const sp<IGraphicBufferConsumer>& consumer,
61 const ui::Size& size, const ui::Size& maxSize)
62 : ConsumerBase(consumer),
63 #endif // COM_ANDROID_GRAPHICS_LIBGUI_FLAGS(WB_CONSUMER_BASE_OWNS_BQ)
64 mDisplayId(displayId),
65 mMaxSize(maxSize),
66 mCurrentBufferSlot(-1),
67 mCurrentBuffer(),
68 mCurrentFence(Fence::NO_FENCE),
69 mHwc(hwc),
70 mHasPendingRelease(false),
71 mPreviousBufferSlot(BufferQueue::INVALID_BUFFER_SLOT),
72 mPreviousBuffer() {
73 ALOGV("Creating for display %s", to_string(displayId).c_str());
74
75 mName = "FramebufferSurface";
76 mConsumer->setConsumerName(mName);
77 mConsumer->setConsumerUsageBits(GRALLOC_USAGE_HW_FB |
78 GRALLOC_USAGE_HW_RENDER |
79 GRALLOC_USAGE_HW_COMPOSER);
80 const auto limitedSize = limitSize(size);
81 mConsumer->setDefaultBufferSize(limitedSize.width, limitedSize.height);
82 mConsumer->setMaxAcquiredBufferCount(
83 SurfaceFlinger::maxFrameBufferAcquiredBuffers - 1);
84
85 for (size_t i = 0; i < sizeof(mHwcBufferIds) / sizeof(mHwcBufferIds[0]); ++i) {
86 mHwcBufferIds[i] = UINT64_MAX;
87 }
88 }
89
resizeBuffers(const ui::Size & newSize)90 void FramebufferSurface::resizeBuffers(const ui::Size& newSize) {
91 const auto limitedSize = limitSize(newSize);
92 mConsumer->setDefaultBufferSize(limitedSize.width, limitedSize.height);
93 }
94
beginFrame(bool)95 status_t FramebufferSurface::beginFrame(bool /*mustRecompose*/) {
96 return NO_ERROR;
97 }
98
prepareFrame(CompositionType)99 status_t FramebufferSurface::prepareFrame(CompositionType /*compositionType*/) {
100 return NO_ERROR;
101 }
102
advanceFrame(float hdrSdrRatio)103 status_t FramebufferSurface::advanceFrame(float hdrSdrRatio) {
104 Mutex::Autolock lock(mMutex);
105
106 BufferItem item;
107 status_t err = acquireBufferLocked(&item, 0);
108 if (err == BufferQueue::NO_BUFFER_AVAILABLE) {
109 mDataspace = Dataspace::UNKNOWN;
110 return NO_ERROR;
111 } else if (err != NO_ERROR) {
112 ALOGE("error acquiring buffer: %s (%d)", strerror(-err), err);
113 mDataspace = Dataspace::UNKNOWN;
114 return err;
115 }
116
117 // If the BufferQueue has freed and reallocated a buffer in mCurrentSlot
118 // then we may have acquired the slot we already own. If we had released
119 // our current buffer before we call acquireBuffer then that release call
120 // would have returned STALE_BUFFER_SLOT, and we would have called
121 // freeBufferLocked on that slot. Because the buffer slot has already
122 // been overwritten with the new buffer all we have to do is skip the
123 // releaseBuffer call and we should be in the same state we'd be in if we
124 // had released the old buffer first.
125 if (mCurrentBufferSlot != BufferQueue::INVALID_BUFFER_SLOT &&
126 item.mSlot != mCurrentBufferSlot) {
127 mHasPendingRelease = true;
128 mPreviousBufferSlot = mCurrentBufferSlot;
129 mPreviousBuffer = mCurrentBuffer;
130 }
131 mCurrentBufferSlot = item.mSlot;
132 mCurrentBuffer = mSlots[mCurrentBufferSlot].mGraphicBuffer;
133 mCurrentFence = item.mFence;
134 mDataspace = static_cast<Dataspace>(item.mDataSpace);
135
136 // assume HWC has previously seen the buffer in this slot
137 sp<GraphicBuffer> hwcBuffer = sp<GraphicBuffer>(nullptr);
138 if (mCurrentBuffer->getId() != mHwcBufferIds[mCurrentBufferSlot]) {
139 mHwcBufferIds[mCurrentBufferSlot] = mCurrentBuffer->getId();
140 hwcBuffer = mCurrentBuffer; // HWC hasn't previously seen this buffer in this slot
141 }
142 status_t result = mHwc.setClientTarget(mDisplayId, mCurrentBufferSlot, mCurrentFence, hwcBuffer,
143 mDataspace, hdrSdrRatio);
144 if (result != NO_ERROR) {
145 ALOGE("error posting framebuffer: %s (%d)", strerror(-result), result);
146 return result;
147 }
148
149 return NO_ERROR;
150 }
151
freeBufferLocked(int slotIndex)152 void FramebufferSurface::freeBufferLocked(int slotIndex) {
153 ConsumerBase::freeBufferLocked(slotIndex);
154 if (slotIndex == mCurrentBufferSlot) {
155 mCurrentBufferSlot = BufferQueue::INVALID_BUFFER_SLOT;
156 }
157 }
158
onFrameCommitted()159 void FramebufferSurface::onFrameCommitted() {
160 if (mHasPendingRelease) {
161 sp<Fence> fence = mHwc.getPresentFence(mDisplayId);
162 if (fence->isValid()) {
163 status_t result = addReleaseFence(mPreviousBufferSlot,
164 mPreviousBuffer, fence);
165 ALOGE_IF(result != NO_ERROR, "onFrameCommitted: failed to add the"
166 " fence: %s (%d)", strerror(-result), result);
167 }
168 status_t result = releaseBufferLocked(mPreviousBufferSlot, mPreviousBuffer);
169 ALOGE_IF(result != NO_ERROR, "onFrameCommitted: error releasing buffer:"
170 " %s (%d)", strerror(-result), result);
171
172 mPreviousBuffer.clear();
173 mHasPendingRelease = false;
174 }
175 }
176
limitSize(const ui::Size & size)177 ui::Size FramebufferSurface::limitSize(const ui::Size& size) {
178 return limitSizeInternal(size, mMaxSize);
179 }
180
limitSizeInternal(const ui::Size & size,const ui::Size & maxSize)181 ui::Size FramebufferSurface::limitSizeInternal(const ui::Size& size, const ui::Size& maxSize) {
182 ui::Size limitedSize = size;
183 bool wasLimited = false;
184 if (size.width > maxSize.width && maxSize.width != 0) {
185 const float aspectRatio = static_cast<float>(size.width) / size.height;
186 limitedSize.height = maxSize.width / aspectRatio;
187 limitedSize.width = maxSize.width;
188 wasLimited = true;
189 }
190 if (limitedSize.height > maxSize.height && maxSize.height != 0) {
191 const float aspectRatio = static_cast<float>(size.width) / size.height;
192 limitedSize.height = maxSize.height;
193 limitedSize.width = maxSize.height * aspectRatio;
194 wasLimited = true;
195 }
196 ALOGI_IF(wasLimited, "Framebuffer size has been limited to [%dx%d] from [%dx%d]",
197 limitedSize.width, limitedSize.height, size.width, size.height);
198 return limitedSize;
199 }
200
dumpAsString(String8 & result) const201 void FramebufferSurface::dumpAsString(String8& result) const {
202 Mutex::Autolock lock(mMutex);
203 result.append(" FramebufferSurface\n");
204 result.appendFormat(" mDataspace=%s (%d)\n",
205 dataspaceDetails(static_cast<android_dataspace>(mDataspace)).c_str(),
206 mDataspace);
207 ConsumerBase::dumpLocked(result, " ");
208 }
209
dumpLocked(String8 & result,const char * prefix) const210 void FramebufferSurface::dumpLocked(String8& result, const char* prefix) const {
211 ConsumerBase::dumpLocked(result, prefix);
212 }
213
getClientTargetAcquireFence() const214 const sp<Fence>& FramebufferSurface::getClientTargetAcquireFence() const {
215 return mCurrentFence;
216 }
217
218 } // namespace android
219
220 // TODO(b/129481165): remove the #pragma below and fix conversion issues
221 #pragma clang diagnostic pop // ignored "-Wconversion"
222