1 /*
2 * Copyright (C) 2018 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 #define LOG_TAG "ExtCamUtils@3.4"
17 //#define LOG_NDEBUG 0
18 #include <log/log.h>
19
20 #include <cmath>
21 #include <sys/mman.h>
22 #include <linux/videodev2.h>
23 #include "ExternalCameraUtils.h"
24
25 namespace android {
26 namespace hardware {
27 namespace camera {
28 namespace device {
29 namespace V3_4 {
30 namespace implementation {
31
V4L2Frame(uint32_t w,uint32_t h,uint32_t fourcc,int bufIdx,int fd,uint32_t dataSize,uint64_t offset)32 V4L2Frame::V4L2Frame(
33 uint32_t w, uint32_t h, uint32_t fourcc,
34 int bufIdx, int fd, uint32_t dataSize, uint64_t offset) :
35 mWidth(w), mHeight(h), mFourcc(fourcc),
36 mBufferIndex(bufIdx), mFd(fd), mDataSize(dataSize), mOffset(offset) {}
37
map(uint8_t ** data,size_t * dataSize)38 int V4L2Frame::map(uint8_t** data, size_t* dataSize) {
39 if (data == nullptr || dataSize == nullptr) {
40 ALOGI("%s: V4L2 buffer map bad argument: data %p, dataSize %p",
41 __FUNCTION__, data, dataSize);
42 return -EINVAL;
43 }
44
45 std::lock_guard<std::mutex> lk(mLock);
46 if (!mMapped) {
47 void* addr = mmap(NULL, mDataSize, PROT_READ, MAP_SHARED, mFd, mOffset);
48 if (addr == MAP_FAILED) {
49 ALOGE("%s: V4L2 buffer map failed: %s", __FUNCTION__, strerror(errno));
50 return -EINVAL;
51 }
52 mData = static_cast<uint8_t*>(addr);
53 mMapped = true;
54 }
55 *data = mData;
56 *dataSize = mDataSize;
57 ALOGV("%s: V4L map FD %d, data %p size %zu", __FUNCTION__, mFd, mData, mDataSize);
58 return 0;
59 }
60
unmap()61 int V4L2Frame::unmap() {
62 std::lock_guard<std::mutex> lk(mLock);
63 if (mMapped) {
64 ALOGV("%s: V4L unmap data %p size %zu", __FUNCTION__, mData, mDataSize);
65 if (munmap(mData, mDataSize) != 0) {
66 ALOGE("%s: V4L2 buffer unmap failed: %s", __FUNCTION__, strerror(errno));
67 return -EINVAL;
68 }
69 mMapped = false;
70 }
71 return 0;
72 }
73
~V4L2Frame()74 V4L2Frame::~V4L2Frame() {
75 unmap();
76 }
77
AllocatedFrame(uint32_t w,uint32_t h)78 AllocatedFrame::AllocatedFrame(
79 uint32_t w, uint32_t h) :
80 mWidth(w), mHeight(h), mFourcc(V4L2_PIX_FMT_YUV420) {};
81
~AllocatedFrame()82 AllocatedFrame::~AllocatedFrame() {}
83
allocate(YCbCrLayout * out)84 int AllocatedFrame::allocate(YCbCrLayout* out) {
85 std::lock_guard<std::mutex> lk(mLock);
86 if ((mWidth % 2) || (mHeight % 2)) {
87 ALOGE("%s: bad dimension %dx%d (not multiple of 2)", __FUNCTION__, mWidth, mHeight);
88 return -EINVAL;
89 }
90
91 uint32_t dataSize = mWidth * mHeight * 3 / 2; // YUV420
92 if (mData.size() != dataSize) {
93 mData.resize(dataSize);
94 }
95
96 if (out != nullptr) {
97 out->y = mData.data();
98 out->yStride = mWidth;
99 uint8_t* cbStart = mData.data() + mWidth * mHeight;
100 uint8_t* crStart = cbStart + mWidth * mHeight / 4;
101 out->cb = cbStart;
102 out->cr = crStart;
103 out->cStride = mWidth / 2;
104 out->chromaStep = 1;
105 }
106 return 0;
107 }
108
getLayout(YCbCrLayout * out)109 int AllocatedFrame::getLayout(YCbCrLayout* out) {
110 IMapper::Rect noCrop = {0, 0,
111 static_cast<int32_t>(mWidth),
112 static_cast<int32_t>(mHeight)};
113 return getCroppedLayout(noCrop, out);
114 }
115
getCroppedLayout(const IMapper::Rect & rect,YCbCrLayout * out)116 int AllocatedFrame::getCroppedLayout(const IMapper::Rect& rect, YCbCrLayout* out) {
117 if (out == nullptr) {
118 ALOGE("%s: null out", __FUNCTION__);
119 return -1;
120 }
121
122 std::lock_guard<std::mutex> lk(mLock);
123 if ((rect.left + rect.width) > static_cast<int>(mWidth) ||
124 (rect.top + rect.height) > static_cast<int>(mHeight) ||
125 (rect.left % 2) || (rect.top % 2) || (rect.width % 2) || (rect.height % 2)) {
126 ALOGE("%s: bad rect left %d top %d w %d h %d", __FUNCTION__,
127 rect.left, rect.top, rect.width, rect.height);
128 return -1;
129 }
130
131 out->y = mData.data() + mWidth * rect.top + rect.left;
132 out->yStride = mWidth;
133 uint8_t* cbStart = mData.data() + mWidth * mHeight;
134 uint8_t* crStart = cbStart + mWidth * mHeight / 4;
135 out->cb = cbStart + mWidth * rect.top / 4 + rect.left / 2;
136 out->cr = crStart + mWidth * rect.top / 4 + rect.left / 2;
137 out->cStride = mWidth / 2;
138 out->chromaStep = 1;
139 return 0;
140 }
141
isAspectRatioClose(float ar1,float ar2)142 bool isAspectRatioClose(float ar1, float ar2) {
143 const float kAspectRatioMatchThres = 0.025f; // This threshold is good enough to distinguish
144 // 4:3/16:9/20:9
145 // 1.33 / 1.78 / 2
146 return (std::abs(ar1 - ar2) < kAspectRatioMatchThres);
147 }
148
getDouble() const149 double SupportedV4L2Format::FrameRate::getDouble() const {
150 return durationDenominator / static_cast<double>(durationNumerator);
151 }
152
153 } // namespace implementation
154 } // namespace V3_4
155 } // namespace device
156
157
158 namespace external {
159 namespace common {
160
161 namespace {
162 const int kDefaultJpegBufSize = 5 << 20; // 5MB
163 const int kDefaultNumVideoBuffer = 4;
164 const int kDefaultNumStillBuffer = 2;
165 const int kDefaultOrientation = 0; // suitable for natural landscape displays like tablet/TV
166 // For phone devices 270 is better
167 } // anonymous namespace
168
169 const char* ExternalCameraConfig::kDefaultCfgPath = "/vendor/etc/external_camera_config.xml";
170
loadFromCfg(const char * cfgPath)171 ExternalCameraConfig ExternalCameraConfig::loadFromCfg(const char* cfgPath) {
172 using namespace tinyxml2;
173 ExternalCameraConfig ret;
174
175 XMLDocument configXml;
176 XMLError err = configXml.LoadFile(cfgPath);
177 if (err != XML_SUCCESS) {
178 ALOGE("%s: Unable to load external camera config file '%s'. Error: %s",
179 __FUNCTION__, cfgPath, XMLDocument::ErrorIDToName(err));
180 return ret;
181 } else {
182 ALOGI("%s: load external camera config succeed!", __FUNCTION__);
183 }
184
185 XMLElement *extCam = configXml.FirstChildElement("ExternalCamera");
186 if (extCam == nullptr) {
187 ALOGI("%s: no external camera config specified", __FUNCTION__);
188 return ret;
189 }
190
191 XMLElement *providerCfg = extCam->FirstChildElement("Provider");
192 if (providerCfg == nullptr) {
193 ALOGI("%s: no external camera provider config specified", __FUNCTION__);
194 return ret;
195 }
196
197 XMLElement *ignore = providerCfg->FirstChildElement("ignore");
198 if (ignore == nullptr) {
199 ALOGI("%s: no internal ignored device specified", __FUNCTION__);
200 return ret;
201 }
202
203 XMLElement *id = ignore->FirstChildElement("id");
204 while (id != nullptr) {
205 const char* text = id->GetText();
206 if (text != nullptr) {
207 ret.mInternalDevices.insert(text);
208 ALOGI("%s: device %s will be ignored by external camera provider",
209 __FUNCTION__, text);
210 }
211 id = id->NextSiblingElement("id");
212 }
213
214 XMLElement *deviceCfg = extCam->FirstChildElement("Device");
215 if (deviceCfg == nullptr) {
216 ALOGI("%s: no external camera device config specified", __FUNCTION__);
217 return ret;
218 }
219
220 XMLElement *jpegBufSz = deviceCfg->FirstChildElement("MaxJpegBufferSize");
221 if (jpegBufSz == nullptr) {
222 ALOGI("%s: no max jpeg buffer size specified", __FUNCTION__);
223 } else {
224 ret.maxJpegBufSize = jpegBufSz->UnsignedAttribute("bytes", /*Default*/kDefaultJpegBufSize);
225 }
226
227 XMLElement *numVideoBuf = deviceCfg->FirstChildElement("NumVideoBuffers");
228 if (numVideoBuf == nullptr) {
229 ALOGI("%s: no num video buffers specified", __FUNCTION__);
230 } else {
231 ret.numVideoBuffers =
232 numVideoBuf->UnsignedAttribute("count", /*Default*/kDefaultNumVideoBuffer);
233 }
234
235 XMLElement *numStillBuf = deviceCfg->FirstChildElement("NumStillBuffers");
236 if (numStillBuf == nullptr) {
237 ALOGI("%s: no num still buffers specified", __FUNCTION__);
238 } else {
239 ret.numStillBuffers =
240 numStillBuf->UnsignedAttribute("count", /*Default*/kDefaultNumStillBuffer);
241 }
242
243 XMLElement *fpsList = deviceCfg->FirstChildElement("FpsList");
244 if (fpsList == nullptr) {
245 ALOGI("%s: no fps list specified", __FUNCTION__);
246 } else {
247 if (!updateFpsList(fpsList, ret.fpsLimits)) {
248 return ret;
249 }
250 }
251
252 XMLElement *depth = deviceCfg->FirstChildElement("Depth16Supported");
253 if (depth == nullptr) {
254 ret.depthEnabled = false;
255 ALOGI("%s: depth output is not enabled", __FUNCTION__);
256 } else {
257 ret.depthEnabled = depth->BoolAttribute("enabled", false);
258 }
259
260 if(ret.depthEnabled) {
261 XMLElement *depthFpsList = deviceCfg->FirstChildElement("DepthFpsList");
262 if (depthFpsList == nullptr) {
263 ALOGW("%s: no depth fps list specified", __FUNCTION__);
264 } else {
265 if(!updateFpsList(depthFpsList, ret.depthFpsLimits)) {
266 return ret;
267 }
268 }
269 }
270
271 XMLElement *minStreamSize = deviceCfg->FirstChildElement("MinimumStreamSize");
272 if (minStreamSize == nullptr) {
273 ALOGI("%s: no minimum stream size specified", __FUNCTION__);
274 } else {
275 ret.minStreamSize = {
276 minStreamSize->UnsignedAttribute("width", /*Default*/0),
277 minStreamSize->UnsignedAttribute("height", /*Default*/0)};
278 }
279
280 XMLElement *orientation = deviceCfg->FirstChildElement("Orientation");
281 if (orientation == nullptr) {
282 ALOGI("%s: no sensor orientation specified", __FUNCTION__);
283 } else {
284 ret.orientation = orientation->IntAttribute("degree", /*Default*/kDefaultOrientation);
285 }
286
287 ALOGI("%s: external camera cfg loaded: maxJpgBufSize %d,"
288 " num video buffers %d, num still buffers %d, orientation %d",
289 __FUNCTION__, ret.maxJpegBufSize,
290 ret.numVideoBuffers, ret.numStillBuffers, ret.orientation);
291 for (const auto& limit : ret.fpsLimits) {
292 ALOGI("%s: fpsLimitList: %dx%d@%f", __FUNCTION__,
293 limit.size.width, limit.size.height, limit.fpsUpperBound);
294 }
295 for (const auto& limit : ret.depthFpsLimits) {
296 ALOGI("%s: depthFpsLimitList: %dx%d@%f", __FUNCTION__, limit.size.width, limit.size.height,
297 limit.fpsUpperBound);
298 }
299 ALOGI("%s: minStreamSize: %dx%d" , __FUNCTION__,
300 ret.minStreamSize.width, ret.minStreamSize.height);
301 return ret;
302 }
303
updateFpsList(tinyxml2::XMLElement * fpsList,std::vector<FpsLimitation> & fpsLimits)304 bool ExternalCameraConfig::updateFpsList(tinyxml2::XMLElement* fpsList,
305 std::vector<FpsLimitation>& fpsLimits) {
306 using namespace tinyxml2;
307 std::vector<FpsLimitation> limits;
308 XMLElement* row = fpsList->FirstChildElement("Limit");
309 while (row != nullptr) {
310 FpsLimitation prevLimit{{0, 0}, 1000.0};
311 FpsLimitation limit;
312 limit.size = {row->UnsignedAttribute("width", /*Default*/ 0),
313 row->UnsignedAttribute("height", /*Default*/ 0)};
314 limit.fpsUpperBound = row->DoubleAttribute("fpsBound", /*Default*/ 1000.0);
315 if (limit.size.width <= prevLimit.size.width ||
316 limit.size.height <= prevLimit.size.height ||
317 limit.fpsUpperBound >= prevLimit.fpsUpperBound) {
318 ALOGE(
319 "%s: FPS limit list must have increasing size and decreasing fps!"
320 " Prev %dx%d@%f, Current %dx%d@%f",
321 __FUNCTION__, prevLimit.size.width, prevLimit.size.height, prevLimit.fpsUpperBound,
322 limit.size.width, limit.size.height, limit.fpsUpperBound);
323 return false;
324 }
325 limits.push_back(limit);
326 row = row->NextSiblingElement("Limit");
327 }
328 fpsLimits = limits;
329 return true;
330 }
331
ExternalCameraConfig()332 ExternalCameraConfig::ExternalCameraConfig() :
333 maxJpegBufSize(kDefaultJpegBufSize),
334 numVideoBuffers(kDefaultNumVideoBuffer),
335 numStillBuffers(kDefaultNumStillBuffer),
336 depthEnabled(false),
337 orientation(kDefaultOrientation) {
338 fpsLimits.push_back({/*Size*/{ 640, 480}, /*FPS upper bound*/30.0});
339 fpsLimits.push_back({/*Size*/{1280, 720}, /*FPS upper bound*/7.5});
340 fpsLimits.push_back({/*Size*/{1920, 1080}, /*FPS upper bound*/5.0});
341 minStreamSize = {0, 0};
342 }
343
344
345 } // namespace common
346 } // namespace external
347 } // namespace camera
348 } // namespace hardware
349 } // namespace android
350