CameraSource.cpp revision 7278cf32f1aa6a322f6dff1f8b7dacf7b6dddba6
1/* 2 * Copyright (C) 2009 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 "CameraSource" 19#include <utils/Log.h> 20 21#include <OMX_Component.h> 22 23#include <media/stagefright/CameraSource.h> 24#include <media/stagefright/MediaDebug.h> 25#include <media/stagefright/MediaDefs.h> 26#include <media/stagefright/MediaErrors.h> 27#include <media/stagefright/MetaData.h> 28#include <camera/Camera.h> 29#include <camera/CameraParameters.h> 30#include <utils/String8.h> 31 32namespace android { 33 34struct CameraSourceListener : public CameraListener { 35 CameraSourceListener(const sp<CameraSource> &source); 36 37 virtual void notify(int32_t msgType, int32_t ext1, int32_t ext2); 38 virtual void postData(int32_t msgType, const sp<IMemory> &dataPtr); 39 40 virtual void postDataTimestamp( 41 nsecs_t timestamp, int32_t msgType, const sp<IMemory>& dataPtr); 42 43protected: 44 virtual ~CameraSourceListener(); 45 46private: 47 wp<CameraSource> mSource; 48 49 CameraSourceListener(const CameraSourceListener &); 50 CameraSourceListener &operator=(const CameraSourceListener &); 51}; 52 53CameraSourceListener::CameraSourceListener(const sp<CameraSource> &source) 54 : mSource(source) { 55} 56 57CameraSourceListener::~CameraSourceListener() { 58} 59 60void CameraSourceListener::notify(int32_t msgType, int32_t ext1, int32_t ext2) { 61 LOGV("notify(%d, %d, %d)", msgType, ext1, ext2); 62} 63 64void CameraSourceListener::postData(int32_t msgType, const sp<IMemory> &dataPtr) { 65 LOGV("postData(%d, ptr:%p, size:%d)", 66 msgType, dataPtr->pointer(), dataPtr->size()); 67} 68 69void CameraSourceListener::postDataTimestamp( 70 nsecs_t timestamp, int32_t msgType, const sp<IMemory>& dataPtr) { 71 72 sp<CameraSource> source = mSource.promote(); 73 if (source.get() != NULL) { 74 source->dataCallbackTimestamp(timestamp/1000, msgType, dataPtr); 75 } 76} 77 78// static 79CameraSource *CameraSource::Create() { 80 sp<Camera> camera = Camera::connect(0); 81 82 if (camera.get() == NULL) { 83 return NULL; 84 } 85 86 return new CameraSource(camera); 87} 88 89// static 90CameraSource *CameraSource::CreateFromCamera(const sp<Camera> &camera) { 91 if (camera.get() == NULL) { 92 return NULL; 93 } 94 95 return new CameraSource(camera); 96} 97 98CameraSource::CameraSource(const sp<Camera> &camera) 99 : mCamera(camera), 100 mWidth(0), 101 mHeight(0), 102 mFirstFrameTimeUs(0), 103 mLastFrameTimestampUs(0), 104 mNumFramesReceived(0), 105 mNumFramesEncoded(0), 106 mNumFramesDropped(0), 107 mStarted(false) { 108 String8 s = mCamera->getParameters(); 109 printf("params: \"%s\"\n", s.string()); 110 111 CameraParameters params(s); 112 params.getPreviewSize(&mWidth, &mHeight); 113} 114 115CameraSource::~CameraSource() { 116 if (mStarted) { 117 stop(); 118 } 119} 120 121status_t CameraSource::start(MetaData *) { 122 LOGV("start"); 123 CHECK(!mStarted); 124 125 mCamera->setListener(new CameraSourceListener(this)); 126 CHECK_EQ(OK, mCamera->startRecording()); 127 128 mStarted = true; 129 return OK; 130} 131 132status_t CameraSource::stop() { 133 LOGV("stop"); 134 Mutex::Autolock autoLock(mLock); 135 mStarted = false; 136 mFrameAvailableCondition.signal(); 137 mCamera->setListener(NULL); 138 mCamera->stopRecording(); 139 140 releaseQueuedFrames(); 141 142 while (!mFramesBeingEncoded.empty()) { 143 LOGI("Number of outstanding frames is being encoded: %d", mFramesBeingEncoded.size()); 144 mFrameCompleteCondition.wait(mLock); 145 } 146 147 LOGI("Frames received/encoded/dropped: %d/%d/%d, timestamp (us) last/first: %lld/%lld", 148 mNumFramesReceived, mNumFramesEncoded, mNumFramesDropped, 149 mLastFrameTimestampUs, mFirstFrameTimeUs); 150 151 CHECK_EQ(mNumFramesReceived, mNumFramesEncoded + mNumFramesDropped); 152 return OK; 153} 154 155void CameraSource::releaseQueuedFrames() { 156 List<sp<IMemory> >::iterator it; 157 while (!mFramesReceived.empty()) { 158 it = mFramesReceived.begin(); 159 mCamera->releaseRecordingFrame(*it); 160 mFramesReceived.erase(it); 161 ++mNumFramesDropped; 162 } 163} 164 165sp<MetaData> CameraSource::getFormat() { 166 sp<MetaData> meta = new MetaData; 167 meta->setCString(kKeyMIMEType, MEDIA_MIMETYPE_VIDEO_RAW); 168 meta->setInt32(kKeyColorFormat, OMX_COLOR_FormatYUV420SemiPlanar); 169 meta->setInt32(kKeyWidth, mWidth); 170 meta->setInt32(kKeyHeight, mHeight); 171 172 return meta; 173} 174 175void CameraSource::signalBufferReturned(MediaBuffer *buffer) { 176 LOGV("signalBufferReturned: %p", buffer->data()); 177 for (List<sp<IMemory> >::iterator it = mFramesBeingEncoded.begin(); 178 it != mFramesBeingEncoded.end(); ++it) { 179 if ((*it)->pointer() == buffer->data()) { 180 mCamera->releaseRecordingFrame((*it)); 181 mFramesBeingEncoded.erase(it); 182 ++mNumFramesEncoded; 183 buffer->setObserver(0); 184 buffer->release(); 185 mFrameCompleteCondition.signal(); 186 return; 187 } 188 } 189 CHECK_EQ(0, "signalBufferReturned: bogus buffer"); 190} 191 192status_t CameraSource::read( 193 MediaBuffer **buffer, const ReadOptions *options) { 194 LOGV("read"); 195 196 *buffer = NULL; 197 198 int64_t seekTimeUs; 199 if (options && options->getSeekTo(&seekTimeUs)) { 200 return ERROR_UNSUPPORTED; 201 } 202 203 sp<IMemory> frame; 204 int64_t frameTime; 205 206 { 207 Mutex::Autolock autoLock(mLock); 208 while (mStarted && mFramesReceived.empty()) { 209 mFrameAvailableCondition.wait(mLock); 210 } 211 if (!mStarted) { 212 return OK; 213 } 214 frame = *mFramesReceived.begin(); 215 mFramesReceived.erase(mFramesReceived.begin()); 216 217 frameTime = *mFrameTimes.begin(); 218 mFrameTimes.erase(mFrameTimes.begin()); 219 220 mFramesBeingEncoded.push_back(frame); 221 *buffer = new MediaBuffer(frame->pointer(), frame->size()); 222 (*buffer)->setObserver(this); 223 (*buffer)->add_ref(); 224 (*buffer)->meta_data()->setInt64(kKeyTime, frameTime); 225 } 226 return OK; 227} 228 229void CameraSource::dataCallbackTimestamp(int64_t timestampUs, 230 int32_t msgType, const sp<IMemory> &data) { 231 LOGV("dataCallbackTimestamp: timestamp %lld us", timestampUs); 232 mLastFrameTimestampUs = timestampUs; 233 Mutex::Autolock autoLock(mLock); 234 if (!mStarted) { 235 mCamera->releaseRecordingFrame(data); 236 ++mNumFramesReceived; 237 ++mNumFramesDropped; 238 return; 239 } 240 241 if (mNumFramesReceived == 0) { 242 mFirstFrameTimeUs = timestampUs; 243 } 244 ++mNumFramesReceived; 245 246 mFramesReceived.push_back(data); 247 mFrameTimes.push_back(timestampUs - mFirstFrameTimeUs); 248 mFrameAvailableCondition.signal(); 249} 250 251} // namespace android 252