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_RAW10:
75 case HAL_PIXEL_FORMAT_RAW_OPAQUE:
76 case HAL_PIXEL_FORMAT_BLOB:
77 case HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED:
78 return false;
79
80 case HAL_PIXEL_FORMAT_YV12:
81 case HAL_PIXEL_FORMAT_YCbCr_420_888:
82 case HAL_PIXEL_FORMAT_YCbCr_422_SP:
83 case HAL_PIXEL_FORMAT_YCrCb_420_SP:
84 case HAL_PIXEL_FORMAT_YCbCr_422_I:
85 default:
86 return true;
87 }
88 }
89
lockBufferItem(const BufferItem & item,LockedBuffer * outBuffer) const90 status_t CpuConsumer::lockBufferItem(const BufferItem& item, LockedBuffer* outBuffer) const {
91 android_ycbcr ycbcr = android_ycbcr();
92
93 PixelFormat format = item.mGraphicBuffer->getPixelFormat();
94 PixelFormat flexFormat = format;
95 if (isPossiblyYUV(format)) {
96 int fenceFd = item.mFence.get() ? item.mFence->dup() : -1;
97 status_t err = item.mGraphicBuffer->lockAsyncYCbCr(GraphicBuffer::USAGE_SW_READ_OFTEN,
98 item.mCrop, &ycbcr, fenceFd);
99 if (err == OK) {
100 flexFormat = HAL_PIXEL_FORMAT_YCbCr_420_888;
101 if (format != HAL_PIXEL_FORMAT_YCbCr_420_888) {
102 CC_LOGV("locking buffer of format %#x as flex YUV", format);
103 }
104 } else if (format == HAL_PIXEL_FORMAT_YCbCr_420_888) {
105 CC_LOGE("Unable to lock YCbCr buffer for CPU reading: %s (%d)", strerror(-err), err);
106 return err;
107 }
108 }
109
110 if (ycbcr.y != nullptr) {
111 outBuffer->data = reinterpret_cast<uint8_t*>(ycbcr.y);
112 outBuffer->stride = static_cast<uint32_t>(ycbcr.ystride);
113 outBuffer->dataCb = reinterpret_cast<uint8_t*>(ycbcr.cb);
114 outBuffer->dataCr = reinterpret_cast<uint8_t*>(ycbcr.cr);
115 outBuffer->chromaStride = static_cast<uint32_t>(ycbcr.cstride);
116 outBuffer->chromaStep = static_cast<uint32_t>(ycbcr.chroma_step);
117 } else {
118 // not flexible YUV; try lockAsync
119 void* bufferPointer = nullptr;
120 int fenceFd = item.mFence.get() ? item.mFence->dup() : -1;
121 status_t err = item.mGraphicBuffer->lockAsync(GraphicBuffer::USAGE_SW_READ_OFTEN,
122 item.mCrop, &bufferPointer, fenceFd);
123 if (err != OK) {
124 CC_LOGE("Unable to lock buffer for CPU reading: %s (%d)", strerror(-err), err);
125 return err;
126 }
127
128 outBuffer->data = reinterpret_cast<uint8_t*>(bufferPointer);
129 outBuffer->stride = item.mGraphicBuffer->getStride();
130 outBuffer->dataCb = nullptr;
131 outBuffer->dataCr = nullptr;
132 outBuffer->chromaStride = 0;
133 outBuffer->chromaStep = 0;
134 }
135
136 outBuffer->width = item.mGraphicBuffer->getWidth();
137 outBuffer->height = item.mGraphicBuffer->getHeight();
138 outBuffer->format = format;
139 outBuffer->flexFormat = flexFormat;
140
141 outBuffer->crop = item.mCrop;
142 outBuffer->transform = item.mTransform;
143 outBuffer->scalingMode = item.mScalingMode;
144 outBuffer->timestamp = item.mTimestamp;
145 outBuffer->dataSpace = item.mDataSpace;
146 outBuffer->frameNumber = item.mFrameNumber;
147
148 return OK;
149 }
150
lockNextBuffer(LockedBuffer * nativeBuffer)151 status_t CpuConsumer::lockNextBuffer(LockedBuffer *nativeBuffer) {
152 status_t err;
153
154 if (!nativeBuffer) return BAD_VALUE;
155
156 Mutex::Autolock _l(mMutex);
157
158 if (mCurrentLockedBuffers == mMaxLockedBuffers) {
159 CC_LOGW("Max buffers have been locked (%zd), cannot lock anymore.",
160 mMaxLockedBuffers);
161 return NOT_ENOUGH_DATA;
162 }
163
164 BufferItem b;
165 err = acquireBufferLocked(&b, 0);
166 if (err != OK) {
167 if (err == BufferQueue::NO_BUFFER_AVAILABLE) {
168 return BAD_VALUE;
169 } else {
170 CC_LOGE("Error acquiring buffer: %s (%d)", strerror(err), err);
171 return err;
172 }
173 }
174
175 if (b.mGraphicBuffer == nullptr) {
176 b.mGraphicBuffer = mSlots[b.mSlot].mGraphicBuffer;
177 }
178
179 err = lockBufferItem(b, nativeBuffer);
180 if (err != OK) {
181 return err;
182 }
183
184 // find an unused AcquiredBuffer
185 size_t lockedIdx = findAcquiredBufferLocked(AcquiredBuffer::kUnusedId);
186 ALOG_ASSERT(lockedIdx < mMaxLockedBuffers);
187 AcquiredBuffer& ab = mAcquiredBuffers.editItemAt(lockedIdx);
188
189 ab.mSlot = b.mSlot;
190 ab.mGraphicBuffer = b.mGraphicBuffer;
191 ab.mLockedBufferId = getLockedBufferId(*nativeBuffer);
192
193 mCurrentLockedBuffers++;
194
195 return OK;
196 }
197
unlockBuffer(const LockedBuffer & nativeBuffer)198 status_t CpuConsumer::unlockBuffer(const LockedBuffer &nativeBuffer) {
199 Mutex::Autolock _l(mMutex);
200
201 uintptr_t id = getLockedBufferId(nativeBuffer);
202 size_t lockedIdx =
203 (id != AcquiredBuffer::kUnusedId) ? findAcquiredBufferLocked(id) : mMaxLockedBuffers;
204 if (lockedIdx == mMaxLockedBuffers) {
205 CC_LOGE("%s: Can't find buffer to free", __FUNCTION__);
206 return BAD_VALUE;
207 }
208
209 AcquiredBuffer& ab = mAcquiredBuffers.editItemAt(lockedIdx);
210
211 int fenceFd = -1;
212 status_t err = ab.mGraphicBuffer->unlockAsync(&fenceFd);
213 if (err != OK) {
214 CC_LOGE("%s: Unable to unlock graphic buffer %zd", __FUNCTION__,
215 lockedIdx);
216 return err;
217 }
218
219 sp<Fence> fence(fenceFd >= 0 ? new Fence(fenceFd) : Fence::NO_FENCE);
220 addReleaseFenceLocked(ab.mSlot, ab.mGraphicBuffer, fence);
221 releaseBufferLocked(ab.mSlot, ab.mGraphicBuffer);
222
223 ab.reset();
224
225 mCurrentLockedBuffers--;
226
227 return OK;
228 }
229
230 } // namespace android
231