1/* 2 * Copyright (C) 2013 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_TAG "Camera2-FrameProcessorBase" 18#define ATRACE_TAG ATRACE_TAG_CAMERA 19//#define LOG_NDEBUG 0 20 21#include <utils/Log.h> 22#include <utils/Trace.h> 23 24#include "common/FrameProcessorBase.h" 25#include "common/CameraDeviceBase.h" 26 27namespace android { 28namespace camera2 { 29 30FrameProcessorBase::FrameProcessorBase(wp<CameraDeviceBase> device) : 31 Thread(/*canCallJava*/false), 32 mDevice(device), 33 mNumPartialResults(1) { 34 sp<CameraDeviceBase> cameraDevice = device.promote(); 35 if (cameraDevice != 0) { 36 CameraMetadata staticInfo = cameraDevice->info(); 37 camera_metadata_entry_t entry = staticInfo.find(ANDROID_REQUEST_PARTIAL_RESULT_COUNT); 38 if (entry.count > 0) { 39 mNumPartialResults = entry.data.i32[0]; 40 } 41 } 42} 43 44FrameProcessorBase::~FrameProcessorBase() { 45 ALOGV("%s: Exit", __FUNCTION__); 46} 47 48status_t FrameProcessorBase::registerListener(int32_t minId, 49 int32_t maxId, const wp<FilteredListener>& listener, bool sendPartials) { 50 Mutex::Autolock l(mInputMutex); 51 List<RangeListener>::iterator item = mRangeListeners.begin(); 52 while (item != mRangeListeners.end()) { 53 if (item->minId == minId && 54 item->maxId == maxId && 55 item->listener == listener) { 56 // already registered, just return 57 ALOGV("%s: Attempt to register the same client twice, ignoring", 58 __FUNCTION__); 59 return OK; 60 } 61 item++; 62 } 63 ALOGV("%s: Registering listener for frame id range %d - %d", 64 __FUNCTION__, minId, maxId); 65 RangeListener rListener = { minId, maxId, listener, sendPartials }; 66 mRangeListeners.push_back(rListener); 67 return OK; 68} 69 70status_t FrameProcessorBase::removeListener(int32_t minId, 71 int32_t maxId, 72 const wp<FilteredListener>& listener) { 73 Mutex::Autolock l(mInputMutex); 74 List<RangeListener>::iterator item = mRangeListeners.begin(); 75 while (item != mRangeListeners.end()) { 76 if (item->minId == minId && 77 item->maxId == maxId && 78 item->listener == listener) { 79 item = mRangeListeners.erase(item); 80 } else { 81 item++; 82 } 83 } 84 return OK; 85} 86 87void FrameProcessorBase::dump(int fd, const Vector<String16>& /*args*/) { 88 String8 result(" Latest received frame:\n"); 89 write(fd, result.string(), result.size()); 90 91 CameraMetadata lastFrame; 92 { 93 // Don't race while dumping metadata 94 Mutex::Autolock al(mLastFrameMutex); 95 lastFrame = CameraMetadata(mLastFrame); 96 } 97 lastFrame.dump(fd, 2, 6); 98} 99 100bool FrameProcessorBase::threadLoop() { 101 status_t res; 102 103 sp<CameraDeviceBase> device; 104 { 105 device = mDevice.promote(); 106 if (device == 0) return false; 107 } 108 109 res = device->waitForNextFrame(kWaitDuration); 110 if (res == OK) { 111 processNewFrames(device); 112 } else if (res != TIMED_OUT) { 113 ALOGE("FrameProcessorBase: Error waiting for new " 114 "frames: %s (%d)", strerror(-res), res); 115 } 116 117 return true; 118} 119 120void FrameProcessorBase::processNewFrames(const sp<CameraDeviceBase> &device) { 121 status_t res; 122 ATRACE_CALL(); 123 CaptureResult result; 124 125 ALOGV("%s: Camera %s: Process new frames", __FUNCTION__, device->getId().string()); 126 127 while ( (res = device->getNextResult(&result)) == OK) { 128 129 // TODO: instead of getting frame number from metadata, we should read 130 // this from result.mResultExtras when CameraDeviceBase interface is fixed. 131 camera_metadata_entry_t entry; 132 133 entry = result.mMetadata.find(ANDROID_REQUEST_FRAME_COUNT); 134 if (entry.count == 0) { 135 ALOGE("%s: Camera %s: Error reading frame number", 136 __FUNCTION__, device->getId().string()); 137 break; 138 } 139 ATRACE_INT("cam2_frame", entry.data.i32[0]); 140 141 if (!processSingleFrame(result, device)) { 142 break; 143 } 144 145 if (!result.mMetadata.isEmpty()) { 146 Mutex::Autolock al(mLastFrameMutex); 147 mLastFrame.acquire(result.mMetadata); 148 } 149 } 150 if (res != NOT_ENOUGH_DATA) { 151 ALOGE("%s: Camera %s: Error getting next frame: %s (%d)", 152 __FUNCTION__, device->getId().string(), strerror(-res), res); 153 return; 154 } 155 156 return; 157} 158 159bool FrameProcessorBase::processSingleFrame(CaptureResult &result, 160 const sp<CameraDeviceBase> &device) { 161 ALOGV("%s: Camera %s: Process single frame (is empty? %d)", 162 __FUNCTION__, device->getId().string(), result.mMetadata.isEmpty()); 163 return processListeners(result, device) == OK; 164} 165 166status_t FrameProcessorBase::processListeners(const CaptureResult &result, 167 const sp<CameraDeviceBase> &device) { 168 ATRACE_CALL(); 169 170 camera_metadata_ro_entry_t entry; 171 172 // Check if this result is partial. 173 bool isPartialResult = 174 result.mResultExtras.partialResultCount < mNumPartialResults; 175 176 // TODO: instead of getting requestID from CameraMetadata, we should get it 177 // from CaptureResultExtras. This will require changing Camera2Device. 178 // Currently Camera2Device uses MetadataQueue to store results, which does not 179 // include CaptureResultExtras. 180 entry = result.mMetadata.find(ANDROID_REQUEST_ID); 181 if (entry.count == 0) { 182 ALOGE("%s: Camera %s: Error reading frame id", __FUNCTION__, device->getId().string()); 183 return BAD_VALUE; 184 } 185 int32_t requestId = entry.data.i32[0]; 186 187 List<sp<FilteredListener> > listeners; 188 { 189 Mutex::Autolock l(mInputMutex); 190 191 List<RangeListener>::iterator item = mRangeListeners.begin(); 192 // Don't deliver partial results to listeners that don't want them 193 while (item != mRangeListeners.end()) { 194 if (requestId >= item->minId && requestId < item->maxId && 195 (!isPartialResult || item->sendPartials)) { 196 sp<FilteredListener> listener = item->listener.promote(); 197 if (listener == 0) { 198 item = mRangeListeners.erase(item); 199 continue; 200 } else { 201 listeners.push_back(listener); 202 } 203 } 204 item++; 205 } 206 } 207 ALOGV("%s: Camera %s: Got %zu range listeners out of %zu", __FUNCTION__, 208 device->getId().string(), listeners.size(), mRangeListeners.size()); 209 210 List<sp<FilteredListener> >::iterator item = listeners.begin(); 211 for (; item != listeners.end(); item++) { 212 (*item)->onResultAvailable(result); 213 } 214 return OK; 215} 216 217}; // namespace camera2 218}; // namespace android 219