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 <hardware/hardware.h>
35 #include <gui/BufferItem.h>
36 #include <gui/BufferQueue.h>
37 #include <gui/Surface.h>
38
39 #include <ui/DebugUtils.h>
40 #include <ui/GraphicBuffer.h>
41 #include <ui/Rect.h>
42
43 #include "FramebufferSurface.h"
44 #include "HWComposer.h"
45 #include "../SurfaceFlinger.h"
46
47 namespace android {
48
49 using ui::Dataspace;
50
FramebufferSurface(HWComposer & hwc,PhysicalDisplayId displayId,const sp<IGraphicBufferConsumer> & consumer,const ui::Size & size,const ui::Size & maxSize)51 FramebufferSurface::FramebufferSurface(HWComposer& hwc, PhysicalDisplayId displayId,
52 const sp<IGraphicBufferConsumer>& consumer,
53 const ui::Size& size, const ui::Size& maxSize)
54 : ConsumerBase(consumer),
55 mDisplayId(displayId),
56 mMaxSize(maxSize),
57 mCurrentBufferSlot(-1),
58 mCurrentBuffer(),
59 mCurrentFence(Fence::NO_FENCE),
60 mHwc(hwc),
61 mHasPendingRelease(false),
62 mPreviousBufferSlot(BufferQueue::INVALID_BUFFER_SLOT),
63 mPreviousBuffer() {
64 ALOGV("Creating for display %s", to_string(displayId).c_str());
65
66 mName = "FramebufferSurface";
67 mConsumer->setConsumerName(mName);
68 mConsumer->setConsumerUsageBits(GRALLOC_USAGE_HW_FB |
69 GRALLOC_USAGE_HW_RENDER |
70 GRALLOC_USAGE_HW_COMPOSER);
71 const auto limitedSize = limitSize(size);
72 mConsumer->setDefaultBufferSize(limitedSize.width, limitedSize.height);
73 mConsumer->setMaxAcquiredBufferCount(
74 SurfaceFlinger::maxFrameBufferAcquiredBuffers - 1);
75
76 for (size_t i = 0; i < sizeof(mHwcBufferIds) / sizeof(mHwcBufferIds[0]); ++i) {
77 mHwcBufferIds[i] = UINT64_MAX;
78 }
79 }
80
resizeBuffers(const ui::Size & newSize)81 void FramebufferSurface::resizeBuffers(const ui::Size& newSize) {
82 const auto limitedSize = limitSize(newSize);
83 mConsumer->setDefaultBufferSize(limitedSize.width, limitedSize.height);
84 }
85
beginFrame(bool)86 status_t FramebufferSurface::beginFrame(bool /*mustRecompose*/) {
87 return NO_ERROR;
88 }
89
prepareFrame(CompositionType)90 status_t FramebufferSurface::prepareFrame(CompositionType /*compositionType*/) {
91 return NO_ERROR;
92 }
93
advanceFrame(float hdrSdrRatio)94 status_t FramebufferSurface::advanceFrame(float hdrSdrRatio) {
95 Mutex::Autolock lock(mMutex);
96
97 BufferItem item;
98 status_t err = acquireBufferLocked(&item, 0);
99 if (err == BufferQueue::NO_BUFFER_AVAILABLE) {
100 mDataspace = Dataspace::UNKNOWN;
101 return NO_ERROR;
102 } else if (err != NO_ERROR) {
103 ALOGE("error acquiring buffer: %s (%d)", strerror(-err), err);
104 mDataspace = Dataspace::UNKNOWN;
105 return err;
106 }
107
108 // If the BufferQueue has freed and reallocated a buffer in mCurrentSlot
109 // then we may have acquired the slot we already own. If we had released
110 // our current buffer before we call acquireBuffer then that release call
111 // would have returned STALE_BUFFER_SLOT, and we would have called
112 // freeBufferLocked on that slot. Because the buffer slot has already
113 // been overwritten with the new buffer all we have to do is skip the
114 // releaseBuffer call and we should be in the same state we'd be in if we
115 // had released the old buffer first.
116 if (mCurrentBufferSlot != BufferQueue::INVALID_BUFFER_SLOT &&
117 item.mSlot != mCurrentBufferSlot) {
118 mHasPendingRelease = true;
119 mPreviousBufferSlot = mCurrentBufferSlot;
120 mPreviousBuffer = mCurrentBuffer;
121 }
122 mCurrentBufferSlot = item.mSlot;
123 mCurrentBuffer = mSlots[mCurrentBufferSlot].mGraphicBuffer;
124 mCurrentFence = item.mFence;
125 mDataspace = static_cast<Dataspace>(item.mDataSpace);
126
127 // assume HWC has previously seen the buffer in this slot
128 sp<GraphicBuffer> hwcBuffer = sp<GraphicBuffer>(nullptr);
129 if (mCurrentBuffer->getId() != mHwcBufferIds[mCurrentBufferSlot]) {
130 mHwcBufferIds[mCurrentBufferSlot] = mCurrentBuffer->getId();
131 hwcBuffer = mCurrentBuffer; // HWC hasn't previously seen this buffer in this slot
132 }
133 status_t result = mHwc.setClientTarget(mDisplayId, mCurrentBufferSlot, mCurrentFence, hwcBuffer,
134 mDataspace, hdrSdrRatio);
135 if (result != NO_ERROR) {
136 ALOGE("error posting framebuffer: %s (%d)", strerror(-result), result);
137 return result;
138 }
139
140 return NO_ERROR;
141 }
142
freeBufferLocked(int slotIndex)143 void FramebufferSurface::freeBufferLocked(int slotIndex) {
144 ConsumerBase::freeBufferLocked(slotIndex);
145 if (slotIndex == mCurrentBufferSlot) {
146 mCurrentBufferSlot = BufferQueue::INVALID_BUFFER_SLOT;
147 }
148 }
149
onFrameCommitted()150 void FramebufferSurface::onFrameCommitted() {
151 if (mHasPendingRelease) {
152 sp<Fence> fence = mHwc.getPresentFence(mDisplayId);
153 if (fence->isValid()) {
154 status_t result = addReleaseFence(mPreviousBufferSlot,
155 mPreviousBuffer, fence);
156 ALOGE_IF(result != NO_ERROR, "onFrameCommitted: failed to add the"
157 " fence: %s (%d)", strerror(-result), result);
158 }
159 status_t result = releaseBufferLocked(mPreviousBufferSlot, mPreviousBuffer);
160 ALOGE_IF(result != NO_ERROR, "onFrameCommitted: error releasing buffer:"
161 " %s (%d)", strerror(-result), result);
162
163 mPreviousBuffer.clear();
164 mHasPendingRelease = false;
165 }
166 }
167
limitSize(const ui::Size & size)168 ui::Size FramebufferSurface::limitSize(const ui::Size& size) {
169 return limitSizeInternal(size, mMaxSize);
170 }
171
limitSizeInternal(const ui::Size & size,const ui::Size & maxSize)172 ui::Size FramebufferSurface::limitSizeInternal(const ui::Size& size, const ui::Size& maxSize) {
173 ui::Size limitedSize = size;
174 bool wasLimited = false;
175 if (size.width > maxSize.width && maxSize.width != 0) {
176 const float aspectRatio = static_cast<float>(size.width) / size.height;
177 limitedSize.height = maxSize.width / aspectRatio;
178 limitedSize.width = maxSize.width;
179 wasLimited = true;
180 }
181 if (limitedSize.height > maxSize.height && maxSize.height != 0) {
182 const float aspectRatio = static_cast<float>(size.width) / size.height;
183 limitedSize.height = maxSize.height;
184 limitedSize.width = maxSize.height * aspectRatio;
185 wasLimited = true;
186 }
187 ALOGI_IF(wasLimited, "Framebuffer size has been limited to [%dx%d] from [%dx%d]",
188 limitedSize.width, limitedSize.height, size.width, size.height);
189 return limitedSize;
190 }
191
dumpAsString(String8 & result) const192 void FramebufferSurface::dumpAsString(String8& result) const {
193 Mutex::Autolock lock(mMutex);
194 result.append(" FramebufferSurface\n");
195 result.appendFormat(" mDataspace=%s (%d)\n",
196 dataspaceDetails(static_cast<android_dataspace>(mDataspace)).c_str(),
197 mDataspace);
198 ConsumerBase::dumpLocked(result, " ");
199 }
200
dumpLocked(String8 & result,const char * prefix) const201 void FramebufferSurface::dumpLocked(String8& result, const char* prefix) const {
202 ConsumerBase::dumpLocked(result, prefix);
203 }
204
getClientTargetAcquireFence() const205 const sp<Fence>& FramebufferSurface::getClientTargetAcquireFence() const {
206 return mCurrentFence;
207 }
208
209 } // namespace android
210
211 // TODO(b/129481165): remove the #pragma below and fix conversion issues
212 #pragma clang diagnostic pop // ignored "-Wconversion"
213