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 <cutils/compiler.h>
22 #include <utils/Log.h>
23 #include <gui/CpuConsumer.h>
24
25 #define CC_LOGV(x, ...) ALOGV("[%s] "x, mName.string(), ##__VA_ARGS__)
26 #define CC_LOGD(x, ...) ALOGD("[%s] "x, mName.string(), ##__VA_ARGS__)
27 #define CC_LOGI(x, ...) ALOGI("[%s] "x, mName.string(), ##__VA_ARGS__)
28 #define CC_LOGW(x, ...) ALOGW("[%s] "x, mName.string(), ##__VA_ARGS__)
29 #define CC_LOGE(x, ...) ALOGE("[%s] "x, mName.string(), ##__VA_ARGS__)
30
31 namespace android {
32
CpuConsumer(const sp<IGraphicBufferConsumer> & bq,uint32_t maxLockedBuffers,bool controlledByApp)33 CpuConsumer::CpuConsumer(const sp<IGraphicBufferConsumer>& bq,
34 uint32_t maxLockedBuffers, bool controlledByApp) :
35 ConsumerBase(bq, controlledByApp),
36 mMaxLockedBuffers(maxLockedBuffers),
37 mCurrentLockedBuffers(0)
38 {
39 // Create tracking entries for locked buffers
40 mAcquiredBuffers.insertAt(0, maxLockedBuffers);
41
42 mConsumer->setConsumerUsageBits(GRALLOC_USAGE_SW_READ_OFTEN);
43 mConsumer->setMaxAcquiredBufferCount(maxLockedBuffers);
44 }
45
~CpuConsumer()46 CpuConsumer::~CpuConsumer() {
47 // ConsumerBase destructor does all the work.
48 }
49
50
51
setName(const String8 & name)52 void CpuConsumer::setName(const String8& name) {
53 Mutex::Autolock _l(mMutex);
54 mName = name;
55 mConsumer->setConsumerName(name);
56 }
57
setDefaultBufferSize(uint32_t width,uint32_t height)58 status_t CpuConsumer::setDefaultBufferSize(uint32_t width, uint32_t height)
59 {
60 Mutex::Autolock _l(mMutex);
61 return mConsumer->setDefaultBufferSize(width, height);
62 }
63
setDefaultBufferFormat(uint32_t defaultFormat)64 status_t CpuConsumer::setDefaultBufferFormat(uint32_t defaultFormat)
65 {
66 Mutex::Autolock _l(mMutex);
67 return mConsumer->setDefaultBufferFormat(defaultFormat);
68 }
69
lockNextBuffer(LockedBuffer * nativeBuffer)70 status_t CpuConsumer::lockNextBuffer(LockedBuffer *nativeBuffer) {
71 status_t err;
72
73 if (!nativeBuffer) return BAD_VALUE;
74 if (mCurrentLockedBuffers == mMaxLockedBuffers) {
75 CC_LOGW("Max buffers have been locked (%d), cannot lock anymore.",
76 mMaxLockedBuffers);
77 return NOT_ENOUGH_DATA;
78 }
79
80 BufferQueue::BufferItem b;
81
82 Mutex::Autolock _l(mMutex);
83
84 err = acquireBufferLocked(&b, 0);
85 if (err != OK) {
86 if (err == BufferQueue::NO_BUFFER_AVAILABLE) {
87 return BAD_VALUE;
88 } else {
89 CC_LOGE("Error acquiring buffer: %s (%d)", strerror(err), err);
90 return err;
91 }
92 }
93
94 int buf = b.mBuf;
95
96 if (b.mFence.get()) {
97 err = b.mFence->waitForever("CpuConsumer::lockNextBuffer");
98 if (err != OK) {
99 CC_LOGE("Failed to wait for fence of acquired buffer: %s (%d)",
100 strerror(-err), err);
101 return err;
102 }
103 }
104
105 void *bufferPointer = NULL;
106 android_ycbcr ycbcr = android_ycbcr();
107
108 if (mSlots[buf].mGraphicBuffer->getPixelFormat() ==
109 HAL_PIXEL_FORMAT_YCbCr_420_888) {
110 err = mSlots[buf].mGraphicBuffer->lockYCbCr(
111 GraphicBuffer::USAGE_SW_READ_OFTEN,
112 b.mCrop,
113 &ycbcr);
114
115 if (err != OK) {
116 CC_LOGE("Unable to lock YCbCr buffer for CPU reading: %s (%d)",
117 strerror(-err), err);
118 return err;
119 }
120 bufferPointer = ycbcr.y;
121 } else {
122 err = mSlots[buf].mGraphicBuffer->lock(
123 GraphicBuffer::USAGE_SW_READ_OFTEN,
124 b.mCrop,
125 &bufferPointer);
126
127 if (err != OK) {
128 CC_LOGE("Unable to lock buffer for CPU reading: %s (%d)",
129 strerror(-err), err);
130 return err;
131 }
132 }
133
134 size_t lockedIdx = 0;
135 for (; lockedIdx < mMaxLockedBuffers; lockedIdx++) {
136 if (mAcquiredBuffers[lockedIdx].mSlot ==
137 BufferQueue::INVALID_BUFFER_SLOT) {
138 break;
139 }
140 }
141 assert(lockedIdx < mMaxLockedBuffers);
142
143 AcquiredBuffer &ab = mAcquiredBuffers.editItemAt(lockedIdx);
144 ab.mSlot = buf;
145 ab.mBufferPointer = bufferPointer;
146 ab.mGraphicBuffer = mSlots[buf].mGraphicBuffer;
147
148 nativeBuffer->data =
149 reinterpret_cast<uint8_t*>(bufferPointer);
150 nativeBuffer->width = mSlots[buf].mGraphicBuffer->getWidth();
151 nativeBuffer->height = mSlots[buf].mGraphicBuffer->getHeight();
152 nativeBuffer->format = mSlots[buf].mGraphicBuffer->getPixelFormat();
153 nativeBuffer->stride = (ycbcr.y != NULL) ?
154 ycbcr.ystride :
155 mSlots[buf].mGraphicBuffer->getStride();
156
157 nativeBuffer->crop = b.mCrop;
158 nativeBuffer->transform = b.mTransform;
159 nativeBuffer->scalingMode = b.mScalingMode;
160 nativeBuffer->timestamp = b.mTimestamp;
161 nativeBuffer->frameNumber = b.mFrameNumber;
162
163 nativeBuffer->dataCb = reinterpret_cast<uint8_t*>(ycbcr.cb);
164 nativeBuffer->dataCr = reinterpret_cast<uint8_t*>(ycbcr.cr);
165 nativeBuffer->chromaStride = ycbcr.cstride;
166 nativeBuffer->chromaStep = ycbcr.chroma_step;
167
168 mCurrentLockedBuffers++;
169
170 return OK;
171 }
172
unlockBuffer(const LockedBuffer & nativeBuffer)173 status_t CpuConsumer::unlockBuffer(const LockedBuffer &nativeBuffer) {
174 Mutex::Autolock _l(mMutex);
175 size_t lockedIdx = 0;
176 status_t err;
177
178 void *bufPtr = reinterpret_cast<void *>(nativeBuffer.data);
179 for (; lockedIdx < mMaxLockedBuffers; lockedIdx++) {
180 if (bufPtr == mAcquiredBuffers[lockedIdx].mBufferPointer) break;
181 }
182 if (lockedIdx == mMaxLockedBuffers) {
183 CC_LOGE("%s: Can't find buffer to free", __FUNCTION__);
184 return BAD_VALUE;
185 }
186
187 return releaseAcquiredBufferLocked(lockedIdx);
188 }
189
releaseAcquiredBufferLocked(int lockedIdx)190 status_t CpuConsumer::releaseAcquiredBufferLocked(int lockedIdx) {
191 status_t err;
192
193 err = mAcquiredBuffers[lockedIdx].mGraphicBuffer->unlock();
194 if (err != OK) {
195 CC_LOGE("%s: Unable to unlock graphic buffer %d", __FUNCTION__,
196 lockedIdx);
197 return err;
198 }
199 int buf = mAcquiredBuffers[lockedIdx].mSlot;
200
201 // release the buffer if it hasn't already been freed by the BufferQueue.
202 // This can happen, for example, when the producer of this buffer
203 // disconnected after this buffer was acquired.
204 if (CC_LIKELY(mAcquiredBuffers[lockedIdx].mGraphicBuffer ==
205 mSlots[buf].mGraphicBuffer)) {
206 releaseBufferLocked(
207 buf, mAcquiredBuffers[lockedIdx].mGraphicBuffer,
208 EGL_NO_DISPLAY, EGL_NO_SYNC_KHR);
209 }
210
211 AcquiredBuffer &ab = mAcquiredBuffers.editItemAt(lockedIdx);
212 ab.mSlot = BufferQueue::INVALID_BUFFER_SLOT;
213 ab.mBufferPointer = NULL;
214 ab.mGraphicBuffer.clear();
215
216 mCurrentLockedBuffers--;
217 return OK;
218 }
219
freeBufferLocked(int slotIndex)220 void CpuConsumer::freeBufferLocked(int slotIndex) {
221 ConsumerBase::freeBufferLocked(slotIndex);
222 }
223
224 } // namespace android
225