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/BufferItem.h>
24 #include <gui/CpuConsumer.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
~CpuConsumer()47 CpuConsumer::~CpuConsumer() {
48 // ConsumerBase destructor does all the work.
49 }
50
51
52
setName(const String8 & name)53 void CpuConsumer::setName(const String8& name) {
54 Mutex::Autolock _l(mMutex);
55 mName = name;
56 mConsumer->setConsumerName(name);
57 }
58
isPossiblyYUV(PixelFormat format)59 static bool isPossiblyYUV(PixelFormat format) {
60 switch (static_cast<int>(format)) {
61 case HAL_PIXEL_FORMAT_RGBA_8888:
62 case HAL_PIXEL_FORMAT_RGBX_8888:
63 case HAL_PIXEL_FORMAT_RGB_888:
64 case HAL_PIXEL_FORMAT_RGB_565:
65 case HAL_PIXEL_FORMAT_BGRA_8888:
66 case HAL_PIXEL_FORMAT_Y8:
67 case HAL_PIXEL_FORMAT_Y16:
68 case HAL_PIXEL_FORMAT_RAW16:
69 case HAL_PIXEL_FORMAT_RAW10:
70 case HAL_PIXEL_FORMAT_RAW_OPAQUE:
71 case HAL_PIXEL_FORMAT_BLOB:
72 case HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED:
73 return false;
74
75 case HAL_PIXEL_FORMAT_YV12:
76 case HAL_PIXEL_FORMAT_YCbCr_420_888:
77 case HAL_PIXEL_FORMAT_YCbCr_422_SP:
78 case HAL_PIXEL_FORMAT_YCrCb_420_SP:
79 case HAL_PIXEL_FORMAT_YCbCr_422_I:
80 default:
81 return true;
82 }
83 }
84
lockNextBuffer(LockedBuffer * nativeBuffer)85 status_t CpuConsumer::lockNextBuffer(LockedBuffer *nativeBuffer) {
86 status_t err;
87
88 if (!nativeBuffer) return BAD_VALUE;
89 if (mCurrentLockedBuffers == mMaxLockedBuffers) {
90 CC_LOGW("Max buffers have been locked (%zd), cannot lock anymore.",
91 mMaxLockedBuffers);
92 return NOT_ENOUGH_DATA;
93 }
94
95 BufferItem b;
96
97 Mutex::Autolock _l(mMutex);
98
99 err = acquireBufferLocked(&b, 0);
100 if (err != OK) {
101 if (err == BufferQueue::NO_BUFFER_AVAILABLE) {
102 return BAD_VALUE;
103 } else {
104 CC_LOGE("Error acquiring buffer: %s (%d)", strerror(err), err);
105 return err;
106 }
107 }
108
109 int buf = b.mBuf;
110
111 void *bufferPointer = NULL;
112 android_ycbcr ycbcr = android_ycbcr();
113
114 PixelFormat format = mSlots[buf].mGraphicBuffer->getPixelFormat();
115 PixelFormat flexFormat = format;
116 if (isPossiblyYUV(format)) {
117 if (b.mFence.get()) {
118 err = mSlots[buf].mGraphicBuffer->lockAsyncYCbCr(
119 GraphicBuffer::USAGE_SW_READ_OFTEN,
120 b.mCrop,
121 &ycbcr,
122 b.mFence->dup());
123 } else {
124 err = mSlots[buf].mGraphicBuffer->lockYCbCr(
125 GraphicBuffer::USAGE_SW_READ_OFTEN,
126 b.mCrop,
127 &ycbcr);
128 }
129 if (err == OK) {
130 bufferPointer = ycbcr.y;
131 flexFormat = HAL_PIXEL_FORMAT_YCbCr_420_888;
132 if (format != HAL_PIXEL_FORMAT_YCbCr_420_888) {
133 CC_LOGV("locking buffer of format %#x as flex YUV", format);
134 }
135 } else if (format == HAL_PIXEL_FORMAT_YCbCr_420_888) {
136 CC_LOGE("Unable to lock YCbCr buffer for CPU reading: %s (%d)",
137 strerror(-err), err);
138 return err;
139 }
140 }
141
142 if (bufferPointer == NULL) { // not flexible YUV
143 if (b.mFence.get()) {
144 err = mSlots[buf].mGraphicBuffer->lockAsync(
145 GraphicBuffer::USAGE_SW_READ_OFTEN,
146 b.mCrop,
147 &bufferPointer,
148 b.mFence->dup());
149 } else {
150 err = mSlots[buf].mGraphicBuffer->lock(
151 GraphicBuffer::USAGE_SW_READ_OFTEN,
152 b.mCrop,
153 &bufferPointer);
154 }
155 if (err != OK) {
156 CC_LOGE("Unable to lock buffer for CPU reading: %s (%d)",
157 strerror(-err), err);
158 return err;
159 }
160 }
161
162 size_t lockedIdx = 0;
163 for (; lockedIdx < static_cast<size_t>(mMaxLockedBuffers); lockedIdx++) {
164 if (mAcquiredBuffers[lockedIdx].mSlot ==
165 BufferQueue::INVALID_BUFFER_SLOT) {
166 break;
167 }
168 }
169 assert(lockedIdx < mMaxLockedBuffers);
170
171 AcquiredBuffer &ab = mAcquiredBuffers.editItemAt(lockedIdx);
172 ab.mSlot = buf;
173 ab.mBufferPointer = bufferPointer;
174 ab.mGraphicBuffer = mSlots[buf].mGraphicBuffer;
175
176 nativeBuffer->data =
177 reinterpret_cast<uint8_t*>(bufferPointer);
178 nativeBuffer->width = mSlots[buf].mGraphicBuffer->getWidth();
179 nativeBuffer->height = mSlots[buf].mGraphicBuffer->getHeight();
180 nativeBuffer->format = format;
181 nativeBuffer->flexFormat = flexFormat;
182 nativeBuffer->stride = (ycbcr.y != NULL) ?
183 static_cast<uint32_t>(ycbcr.ystride) :
184 mSlots[buf].mGraphicBuffer->getStride();
185
186 nativeBuffer->crop = b.mCrop;
187 nativeBuffer->transform = b.mTransform;
188 nativeBuffer->scalingMode = b.mScalingMode;
189 nativeBuffer->timestamp = b.mTimestamp;
190 nativeBuffer->dataSpace = b.mDataSpace;
191 nativeBuffer->frameNumber = b.mFrameNumber;
192
193 nativeBuffer->dataCb = reinterpret_cast<uint8_t*>(ycbcr.cb);
194 nativeBuffer->dataCr = reinterpret_cast<uint8_t*>(ycbcr.cr);
195 nativeBuffer->chromaStride = static_cast<uint32_t>(ycbcr.cstride);
196 nativeBuffer->chromaStep = static_cast<uint32_t>(ycbcr.chroma_step);
197
198 mCurrentLockedBuffers++;
199
200 return OK;
201 }
202
unlockBuffer(const LockedBuffer & nativeBuffer)203 status_t CpuConsumer::unlockBuffer(const LockedBuffer &nativeBuffer) {
204 Mutex::Autolock _l(mMutex);
205 size_t lockedIdx = 0;
206
207 void *bufPtr = reinterpret_cast<void *>(nativeBuffer.data);
208 for (; lockedIdx < static_cast<size_t>(mMaxLockedBuffers); lockedIdx++) {
209 if (bufPtr == mAcquiredBuffers[lockedIdx].mBufferPointer) break;
210 }
211 if (lockedIdx == mMaxLockedBuffers) {
212 CC_LOGE("%s: Can't find buffer to free", __FUNCTION__);
213 return BAD_VALUE;
214 }
215
216 return releaseAcquiredBufferLocked(lockedIdx);
217 }
218
releaseAcquiredBufferLocked(size_t lockedIdx)219 status_t CpuConsumer::releaseAcquiredBufferLocked(size_t lockedIdx) {
220 status_t err;
221 int fd = -1;
222
223 err = mAcquiredBuffers[lockedIdx].mGraphicBuffer->unlockAsync(&fd);
224 if (err != OK) {
225 CC_LOGE("%s: Unable to unlock graphic buffer %zd", __FUNCTION__,
226 lockedIdx);
227 return err;
228 }
229 int buf = mAcquiredBuffers[lockedIdx].mSlot;
230 if (CC_LIKELY(fd != -1)) {
231 sp<Fence> fence(new Fence(fd));
232 addReleaseFenceLocked(
233 mAcquiredBuffers[lockedIdx].mSlot,
234 mSlots[buf].mGraphicBuffer,
235 fence);
236 }
237
238 // release the buffer if it hasn't already been freed by the BufferQueue.
239 // This can happen, for example, when the producer of this buffer
240 // disconnected after this buffer was acquired.
241 if (CC_LIKELY(mAcquiredBuffers[lockedIdx].mGraphicBuffer ==
242 mSlots[buf].mGraphicBuffer)) {
243 releaseBufferLocked(
244 buf, mAcquiredBuffers[lockedIdx].mGraphicBuffer,
245 EGL_NO_DISPLAY, EGL_NO_SYNC_KHR);
246 }
247
248 AcquiredBuffer &ab = mAcquiredBuffers.editItemAt(lockedIdx);
249 ab.mSlot = BufferQueue::INVALID_BUFFER_SLOT;
250 ab.mBufferPointer = NULL;
251 ab.mGraphicBuffer.clear();
252
253 mCurrentLockedBuffers--;
254 return OK;
255 }
256
freeBufferLocked(int slotIndex)257 void CpuConsumer::freeBufferLocked(int slotIndex) {
258 ConsumerBase::freeBufferLocked(slotIndex);
259 }
260
261 } // namespace android
262