FrameProcessorBase.cpp revision 25a0aef19e170d2695f64b4c48296e7914155a88
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} 34 35FrameProcessorBase::~FrameProcessorBase() { 36 ALOGV("%s: Exit", __FUNCTION__); 37} 38 39status_t FrameProcessorBase::registerListener(int32_t minId, 40 int32_t maxId, wp<FilteredListener> listener, bool sendPartials) { 41 Mutex::Autolock l(mInputMutex); 42 ALOGV("%s: Registering listener for frame id range %d - %d", 43 __FUNCTION__, minId, maxId); 44 RangeListener rListener = { minId, maxId, listener, sendPartials }; 45 mRangeListeners.push_back(rListener); 46 return OK; 47} 48 49status_t FrameProcessorBase::removeListener(int32_t minId, 50 int32_t maxId, 51 wp<FilteredListener> listener) { 52 Mutex::Autolock l(mInputMutex); 53 List<RangeListener>::iterator item = mRangeListeners.begin(); 54 while (item != mRangeListeners.end()) { 55 if (item->minId == minId && 56 item->maxId == maxId && 57 item->listener == listener) { 58 item = mRangeListeners.erase(item); 59 } else { 60 item++; 61 } 62 } 63 return OK; 64} 65 66void FrameProcessorBase::dump(int fd, const Vector<String16>& /*args*/) { 67 String8 result(" Latest received frame:\n"); 68 write(fd, result.string(), result.size()); 69 70 CameraMetadata lastFrame; 71 { 72 // Don't race while dumping metadata 73 Mutex::Autolock al(mLastFrameMutex); 74 lastFrame = CameraMetadata(mLastFrame); 75 } 76 lastFrame.dump(fd, 2, 6); 77} 78 79bool FrameProcessorBase::threadLoop() { 80 status_t res; 81 82 sp<CameraDeviceBase> device; 83 { 84 device = mDevice.promote(); 85 if (device == 0) return false; 86 } 87 88 res = device->waitForNextFrame(kWaitDuration); 89 if (res == OK) { 90 processNewFrames(device); 91 } else if (res != TIMED_OUT) { 92 ALOGE("FrameProcessorBase: Error waiting for new " 93 "frames: %s (%d)", strerror(-res), res); 94 } 95 96 return true; 97} 98 99void FrameProcessorBase::processNewFrames(const sp<CameraDeviceBase> &device) { 100 status_t res; 101 ATRACE_CALL(); 102 CaptureResult result; 103 104 ALOGV("%s: Camera %d: Process new frames", __FUNCTION__, device->getId()); 105 106 while ( (res = device->getNextResult(&result)) == OK) { 107 108 // TODO: instead of getting frame number from metadata, we should read 109 // this from result.mResultExtras when CameraDeviceBase interface is fixed. 110 camera_metadata_entry_t entry; 111 112 entry = result.mMetadata.find(ANDROID_REQUEST_FRAME_COUNT); 113 if (entry.count == 0) { 114 ALOGE("%s: Camera %d: Error reading frame number", 115 __FUNCTION__, device->getId()); 116 break; 117 } 118 ATRACE_INT("cam2_frame", entry.data.i32[0]); 119 120 if (!processSingleFrame(result, device)) { 121 break; 122 } 123 124 if (!result.mMetadata.isEmpty()) { 125 Mutex::Autolock al(mLastFrameMutex); 126 mLastFrame.acquire(result.mMetadata); 127 } 128 } 129 if (res != NOT_ENOUGH_DATA) { 130 ALOGE("%s: Camera %d: Error getting next frame: %s (%d)", 131 __FUNCTION__, device->getId(), strerror(-res), res); 132 return; 133 } 134 135 return; 136} 137 138bool FrameProcessorBase::processSingleFrame(CaptureResult &result, 139 const sp<CameraDeviceBase> &device) { 140 ALOGV("%s: Camera %d: Process single frame (is empty? %d)", 141 __FUNCTION__, device->getId(), result.mMetadata.isEmpty()); 142 return processListeners(result, device) == OK; 143} 144 145status_t FrameProcessorBase::processListeners(const CaptureResult &result, 146 const sp<CameraDeviceBase> &device) { 147 ATRACE_CALL(); 148 149 camera_metadata_ro_entry_t entry; 150 151 // Quirks: Don't deliver partial results to listeners that don't want them 152 bool quirkIsPartial = false; 153 entry = result.mMetadata.find(ANDROID_QUIRKS_PARTIAL_RESULT); 154 if (entry.count != 0 && 155 entry.data.u8[0] == ANDROID_QUIRKS_PARTIAL_RESULT_PARTIAL) { 156 ALOGV("%s: Camera %d: Not forwarding partial result to listeners", 157 __FUNCTION__, device->getId()); 158 quirkIsPartial = true; 159 } 160 161 // TODO: instead of getting requestID from CameraMetadata, we should get it 162 // from CaptureResultExtras. This will require changing Camera2Device. 163 // Currently Camera2Device uses MetadataQueue to store results, which does not 164 // include CaptureResultExtras. 165 entry = result.mMetadata.find(ANDROID_REQUEST_ID); 166 if (entry.count == 0) { 167 ALOGE("%s: Camera %d: Error reading frame id", __FUNCTION__, device->getId()); 168 return BAD_VALUE; 169 } 170 int32_t requestId = entry.data.i32[0]; 171 172 List<sp<FilteredListener> > listeners; 173 { 174 Mutex::Autolock l(mInputMutex); 175 176 List<RangeListener>::iterator item = mRangeListeners.begin(); 177 while (item != mRangeListeners.end()) { 178 if (requestId >= item->minId && requestId < item->maxId && 179 (!quirkIsPartial || item->sendPartials)) { 180 sp<FilteredListener> listener = item->listener.promote(); 181 if (listener == 0) { 182 item = mRangeListeners.erase(item); 183 continue; 184 } else { 185 listeners.push_back(listener); 186 } 187 } 188 item++; 189 } 190 } 191 ALOGV("%s: Camera %d: Got %zu range listeners out of %zu", __FUNCTION__, 192 device->getId(), listeners.size(), mRangeListeners.size()); 193 194 List<sp<FilteredListener> >::iterator item = listeners.begin(); 195 for (; item != listeners.end(); item++) { 196 (*item)->onResultAvailable(result); 197 } 198 return OK; 199} 200 201}; // namespace camera2 202}; // namespace android 203