1 /*
2 * Copyright (C) 2012 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 //#define LOG_NDEBUG 0
18 #define LOG_TAG "CpuConsumer"
19 //#define ATRACE_TAG ATRACE_TAG_GRAPHICS
20
21 #include <gui/CpuConsumer.h>
22
23 #include <gui/BufferItem.h>
24 #include <utils/Log.h>
25
26 #define CC_LOGV(x, ...) ALOGV("[%s] " x, mName.string(), ##__VA_ARGS__)
27 //#define CC_LOGD(x, ...) ALOGD("[%s] " x, mName.string(), ##__VA_ARGS__)
28 //#define CC_LOGI(x, ...) ALOGI("[%s] " x, mName.string(), ##__VA_ARGS__)
29 #define CC_LOGW(x, ...) ALOGW("[%s] " x, mName.string(), ##__VA_ARGS__)
30 #define CC_LOGE(x, ...) ALOGE("[%s] " x, mName.string(), ##__VA_ARGS__)
31
32 namespace android {
33
CpuConsumer(const sp<IGraphicBufferConsumer> & bq,size_t maxLockedBuffers,bool controlledByApp)34 CpuConsumer::CpuConsumer(const sp<IGraphicBufferConsumer>& bq,
35 size_t maxLockedBuffers, bool controlledByApp) :
36 ConsumerBase(bq, controlledByApp),
37 mMaxLockedBuffers(maxLockedBuffers),
38 mCurrentLockedBuffers(0)
39 {
40 // Create tracking entries for locked buffers
41 mAcquiredBuffers.insertAt(0, maxLockedBuffers);
42
43 mConsumer->setConsumerUsageBits(GRALLOC_USAGE_SW_READ_OFTEN);
44 mConsumer->setMaxAcquiredBufferCount(static_cast<int32_t>(maxLockedBuffers));
45 }
46
findAcquiredBufferLocked(uintptr_t id) const47 size_t CpuConsumer::findAcquiredBufferLocked(uintptr_t id) const {
48 for (size_t i = 0; i < mMaxLockedBuffers; i++) {
49 const auto& ab = mAcquiredBuffers[i];
50 // note that this finds AcquiredBuffer::kUnusedId as well
51 if (ab.mLockedBufferId == id) {
52 return i;
53 }
54 }
55 return mMaxLockedBuffers; // an invalid index
56 }
57
getLockedBufferId(const CpuConsumer::LockedBuffer & buffer)58 static uintptr_t getLockedBufferId(const CpuConsumer::LockedBuffer& buffer) {
59 return reinterpret_cast<uintptr_t>(buffer.data);
60 }
61
isPossiblyYUV(PixelFormat format)62 static bool isPossiblyYUV(PixelFormat format) {
63 switch (static_cast<int>(format)) {
64 case HAL_PIXEL_FORMAT_RGBA_8888:
65 case HAL_PIXEL_FORMAT_RGBX_8888:
66 case HAL_PIXEL_FORMAT_RGBA_FP16:
67 case HAL_PIXEL_FORMAT_RGBA_1010102:
68 case HAL_PIXEL_FORMAT_RGB_888:
69 case HAL_PIXEL_FORMAT_RGB_565:
70 case HAL_PIXEL_FORMAT_BGRA_8888:
71 case HAL_PIXEL_FORMAT_Y8:
72 case HAL_PIXEL_FORMAT_Y16:
73 case HAL_PIXEL_FORMAT_RAW16:
74 case HAL_PIXEL_FORMAT_RAW12:
75 case HAL_PIXEL_FORMAT_RAW10:
76 case HAL_PIXEL_FORMAT_RAW_OPAQUE:
77 case HAL_PIXEL_FORMAT_BLOB:
78 case HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED:
79 return false;
80
81 case HAL_PIXEL_FORMAT_YV12:
82 case HAL_PIXEL_FORMAT_YCbCr_420_888:
83 case HAL_PIXEL_FORMAT_YCbCr_422_SP:
84 case HAL_PIXEL_FORMAT_YCrCb_420_SP:
85 case HAL_PIXEL_FORMAT_YCbCr_422_I:
86 default:
87 return true;
88 }
89 }
90
lockBufferItem(const BufferItem & item,LockedBuffer * outBuffer) const91 status_t CpuConsumer::lockBufferItem(const BufferItem& item, LockedBuffer* outBuffer) const {
92 android_ycbcr ycbcr = android_ycbcr();
93
94 PixelFormat format = item.mGraphicBuffer->getPixelFormat();
95 PixelFormat flexFormat = format;
96 if (isPossiblyYUV(format)) {
97 int fenceFd = item.mFence.get() ? item.mFence->dup() : -1;
98 status_t err = item.mGraphicBuffer->lockAsyncYCbCr(GraphicBuffer::USAGE_SW_READ_OFTEN,
99 item.mCrop, &ycbcr, fenceFd);
100 if (err == OK) {
101 flexFormat = HAL_PIXEL_FORMAT_YCbCr_420_888;
102 if (format != HAL_PIXEL_FORMAT_YCbCr_420_888) {
103 CC_LOGV("locking buffer of format %#x as flex YUV", format);
104 }
105 } else if (format == HAL_PIXEL_FORMAT_YCbCr_420_888) {
106 CC_LOGE("Unable to lock YCbCr buffer for CPU reading: %s (%d)", strerror(-err), err);
107 return err;
108 }
109 }
110
111 if (ycbcr.y != nullptr) {
112 outBuffer->data = reinterpret_cast<uint8_t*>(ycbcr.y);
113 outBuffer->stride = static_cast<uint32_t>(ycbcr.ystride);
114 outBuffer->dataCb = reinterpret_cast<uint8_t*>(ycbcr.cb);
115 outBuffer->dataCr = reinterpret_cast<uint8_t*>(ycbcr.cr);
116 outBuffer->chromaStride = static_cast<uint32_t>(ycbcr.cstride);
117 outBuffer->chromaStep = static_cast<uint32_t>(ycbcr.chroma_step);
118 } else {
119 // not flexible YUV; try lockAsync
120 void* bufferPointer = nullptr;
121 int fenceFd = item.mFence.get() ? item.mFence->dup() : -1;
122 status_t err = item.mGraphicBuffer->lockAsync(GraphicBuffer::USAGE_SW_READ_OFTEN,
123 item.mCrop, &bufferPointer, fenceFd);
124 if (err != OK) {
125 CC_LOGE("Unable to lock buffer for CPU reading: %s (%d)", strerror(-err), err);
126 return err;
127 }
128
129 outBuffer->data = reinterpret_cast<uint8_t*>(bufferPointer);
130 outBuffer->stride = item.mGraphicBuffer->getStride();
131 outBuffer->dataCb = nullptr;
132 outBuffer->dataCr = nullptr;
133 outBuffer->chromaStride = 0;
134 outBuffer->chromaStep = 0;
135 }
136
137 outBuffer->width = item.mGraphicBuffer->getWidth();
138 outBuffer->height = item.mGraphicBuffer->getHeight();
139 outBuffer->format = format;
140 outBuffer->flexFormat = flexFormat;
141
142 outBuffer->crop = item.mCrop;
143 outBuffer->transform = item.mTransform;
144 outBuffer->scalingMode = item.mScalingMode;
145 outBuffer->timestamp = item.mTimestamp;
146 outBuffer->dataSpace = item.mDataSpace;
147 outBuffer->frameNumber = item.mFrameNumber;
148
149 return OK;
150 }
151
lockNextBuffer(LockedBuffer * nativeBuffer)152 status_t CpuConsumer::lockNextBuffer(LockedBuffer *nativeBuffer) {
153 status_t err;
154
155 if (!nativeBuffer) return BAD_VALUE;
156
157 Mutex::Autolock _l(mMutex);
158
159 if (mCurrentLockedBuffers == mMaxLockedBuffers) {
160 CC_LOGW("Max buffers have been locked (%zd), cannot lock anymore.",
161 mMaxLockedBuffers);
162 return NOT_ENOUGH_DATA;
163 }
164
165 BufferItem b;
166 err = acquireBufferLocked(&b, 0);
167 if (err != OK) {
168 if (err == BufferQueue::NO_BUFFER_AVAILABLE) {
169 return BAD_VALUE;
170 } else {
171 CC_LOGE("Error acquiring buffer: %s (%d)", strerror(err), err);
172 return err;
173 }
174 }
175
176 if (b.mGraphicBuffer == nullptr) {
177 b.mGraphicBuffer = mSlots[b.mSlot].mGraphicBuffer;
178 }
179
180 err = lockBufferItem(b, nativeBuffer);
181 if (err != OK) {
182 return err;
183 }
184
185 // find an unused AcquiredBuffer
186 size_t lockedIdx = findAcquiredBufferLocked(AcquiredBuffer::kUnusedId);
187 ALOG_ASSERT(lockedIdx < mMaxLockedBuffers);
188 AcquiredBuffer& ab = mAcquiredBuffers.editItemAt(lockedIdx);
189
190 ab.mSlot = b.mSlot;
191 ab.mGraphicBuffer = b.mGraphicBuffer;
192 ab.mLockedBufferId = getLockedBufferId(*nativeBuffer);
193
194 mCurrentLockedBuffers++;
195
196 return OK;
197 }
198
unlockBuffer(const LockedBuffer & nativeBuffer)199 status_t CpuConsumer::unlockBuffer(const LockedBuffer &nativeBuffer) {
200 Mutex::Autolock _l(mMutex);
201
202 uintptr_t id = getLockedBufferId(nativeBuffer);
203 size_t lockedIdx =
204 (id != AcquiredBuffer::kUnusedId) ? findAcquiredBufferLocked(id) : mMaxLockedBuffers;
205 if (lockedIdx == mMaxLockedBuffers) {
206 CC_LOGE("%s: Can't find buffer to free", __FUNCTION__);
207 return BAD_VALUE;
208 }
209
210 AcquiredBuffer& ab = mAcquiredBuffers.editItemAt(lockedIdx);
211
212 int fenceFd = -1;
213 status_t err = ab.mGraphicBuffer->unlockAsync(&fenceFd);
214 if (err != OK) {
215 CC_LOGE("%s: Unable to unlock graphic buffer %zd", __FUNCTION__,
216 lockedIdx);
217 return err;
218 }
219
220 sp<Fence> fence(fenceFd >= 0 ? new Fence(fenceFd) : Fence::NO_FENCE);
221 addReleaseFenceLocked(ab.mSlot, ab.mGraphicBuffer, fence);
222 releaseBufferLocked(ab.mSlot, ab.mGraphicBuffer);
223
224 ab.reset();
225
226 mCurrentLockedBuffers--;
227
228 return OK;
229 }
230
231 } // namespace android
232