ProCamera.cpp revision c073ba525404f3416c2824c435d3d926a9892f1b 
1/*
2**
3** Copyright (C) 2013, The Android Open Source Project
4**
5** Licensed under the Apache License, Version 2.0 (the "License");
6** you may not use this file except in compliance with the License.
7** You may obtain a copy of the License at
8**
9**     http://www.apache.org/licenses/LICENSE-2.0
10**
11** Unless required by applicable law or agreed to in writing, software
12** distributed under the License is distributed on an "AS IS" BASIS,
13** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14** See the License for the specific language governing permissions and
15** limitations under the License.
16*/
17
18//#define LOG_NDEBUG 0
19#define LOG_TAG "ProCamera"
20#include <utils/Log.h>
21#include <utils/threads.h>
22#include <utils/Mutex.h>
23
24#include <binder/IPCThreadState.h>
25#include <binder/IServiceManager.h>
26#include <binder/IMemory.h>
27
28#include <camera/ProCamera.h>
29#include <camera/ICameraService.h>
30#include <camera/IProCameraUser.h>
31#include <camera/IProCameraCallbacks.h>
32
33#include <gui/IGraphicBufferProducer.h>
34
35#include <system/camera_metadata.h>
36
37namespace android {
38
39sp<ProCamera> ProCamera::connect(int cameraId)
40{
41    return CameraBaseT::connect(cameraId, String16(),
42                                 ICameraService::USE_CALLING_UID);
43}
44
45ProCamera::ProCamera(int cameraId)
46    : CameraBase(cameraId)
47{
48}
49
50ProCamera::~ProCamera()
51{
52
53}
54
55/* IProCameraUser's implementation */
56
57// callback from camera service
58void ProCamera::notifyCallback(int32_t msgType, int32_t ext1, int32_t ext2)
59{
60    return CameraBaseT::notifyCallback(msgType, ext1, ext2);
61}
62
63// callback from camera service when frame or image is ready
64void ProCamera::dataCallback(int32_t msgType, const sp<IMemory>& dataPtr,
65                          camera_frame_metadata_t *metadata)
66{
67    return CameraBaseT::dataCallback(msgType, dataPtr, metadata);
68}
69
70// callback from camera service when timestamped frame is ready
71void ProCamera::dataCallbackTimestamp(nsecs_t timestamp, int32_t msgType,
72                                   const sp<IMemory>& dataPtr)
73{
74    CameraBaseT::dataCallbackTimestamp(timestamp, msgType, dataPtr);
75}
76
77
78void ProCamera::onLockStatusChanged(
79                                 IProCameraCallbacks::LockStatus newLockStatus)
80{
81    ALOGV("%s: newLockStatus = %d", __FUNCTION__, newLockStatus);
82
83    sp<ProCameraListener> listener;
84    {
85        Mutex::Autolock _l(mLock);
86        listener = mListener;
87    }
88    if (listener != NULL) {
89        switch (newLockStatus) {
90            case IProCameraCallbacks::LOCK_ACQUIRED:
91                listener->onLockAcquired();
92                break;
93            case IProCameraCallbacks::LOCK_RELEASED:
94                listener->onLockReleased();
95                break;
96            case IProCameraCallbacks::LOCK_STOLEN:
97                listener->onLockStolen();
98                break;
99            default:
100                ALOGE("%s: Unknown lock status: %d",
101                      __FUNCTION__, newLockStatus);
102        }
103    }
104}
105
106void ProCamera::onResultReceived(int32_t frameId, camera_metadata* result) {
107    ALOGV("%s: frameId = %d, result = %p", __FUNCTION__, frameId, result);
108
109    sp<ProCameraListener> listener;
110    {
111        Mutex::Autolock _l(mLock);
112        listener = mListener;
113    }
114
115    CameraMetadata tmp(result);
116
117    // Unblock waitForFrame(id) callers
118    {
119        Mutex::Autolock al(mWaitMutex);
120        mMetadataReady = true;
121        mLatestMetadata = tmp;
122        mWaitCondition.broadcast();
123    }
124
125    result = tmp.release();
126
127    if (listener != NULL) {
128        listener->onResultReceived(frameId, result);
129    } else {
130        free_camera_metadata(result);
131    }
132
133}
134
135status_t ProCamera::exclusiveTryLock()
136{
137    sp <IProCameraUser> c = mCamera;
138    if (c == 0) return NO_INIT;
139
140    return c->exclusiveTryLock();
141}
142status_t ProCamera::exclusiveLock()
143{
144    sp <IProCameraUser> c = mCamera;
145    if (c == 0) return NO_INIT;
146
147    return c->exclusiveLock();
148}
149status_t ProCamera::exclusiveUnlock()
150{
151    sp <IProCameraUser> c = mCamera;
152    if (c == 0) return NO_INIT;
153
154    return c->exclusiveUnlock();
155}
156bool ProCamera::hasExclusiveLock()
157{
158    sp <IProCameraUser> c = mCamera;
159    if (c == 0) return NO_INIT;
160
161    return c->hasExclusiveLock();
162}
163
164// Note that the callee gets a copy of the metadata.
165int ProCamera::submitRequest(const struct camera_metadata* metadata,
166                             bool streaming)
167{
168    sp <IProCameraUser> c = mCamera;
169    if (c == 0) return NO_INIT;
170
171    return c->submitRequest(const_cast<struct camera_metadata*>(metadata),
172                            streaming);
173}
174
175status_t ProCamera::cancelRequest(int requestId)
176{
177    sp <IProCameraUser> c = mCamera;
178    if (c == 0) return NO_INIT;
179
180    return c->cancelRequest(requestId);
181}
182
183status_t ProCamera::deleteStream(int streamId)
184{
185    sp <IProCameraUser> c = mCamera;
186    if (c == 0) return NO_INIT;
187
188    status_t s = c->cancelStream(streamId);
189
190    mStreams.removeItem(streamId);
191
192    return s;
193}
194
195status_t ProCamera::createStream(int width, int height, int format,
196                                 const sp<Surface>& surface,
197                                 /*out*/
198                                 int* streamId)
199{
200    *streamId = -1;
201
202    ALOGV("%s: createStreamW %dx%d (fmt=0x%x)", __FUNCTION__, width, height,
203                                                                       format);
204
205    if (surface == 0) {
206        return BAD_VALUE;
207    }
208
209    return createStream(width, height, format,
210                        surface->getIGraphicBufferProducer(),
211                        streamId);
212}
213
214status_t ProCamera::createStream(int width, int height, int format,
215                                 const sp<IGraphicBufferProducer>& bufferProducer,
216                                 /*out*/
217                                 int* streamId) {
218    *streamId = -1;
219
220    ALOGV("%s: createStreamT %dx%d (fmt=0x%x)", __FUNCTION__, width, height,
221                                                                       format);
222
223    if (bufferProducer == 0) {
224        return BAD_VALUE;
225    }
226
227    sp <IProCameraUser> c = mCamera;
228    status_t stat = c->createStream(width, height, format, bufferProducer,
229                                    streamId);
230
231    if (stat == OK) {
232        StreamInfo s(*streamId);
233
234        mStreams.add(*streamId, s);
235    }
236
237    return stat;
238}
239
240status_t ProCamera::createStreamCpu(int width, int height, int format,
241                                    int heapCount,
242                                    /*out*/
243                                    sp<CpuConsumer>* cpuConsumer,
244                                    int* streamId)
245{
246    ALOGV("%s: createStreamW %dx%d (fmt=0x%x)", __FUNCTION__, width, height,
247                                                                        format);
248
249    *cpuConsumer = NULL;
250
251    sp <IProCameraUser> c = mCamera;
252    if (c == 0) return NO_INIT;
253
254    sp<CpuConsumer> cc = new CpuConsumer(heapCount);
255    cc->setName(String8("ProCamera::mCpuConsumer"));
256
257    sp<Surface> stc = new Surface(
258        cc->getProducerInterface());
259
260    status_t s = createStream(width, height, format,
261                              stc->getIGraphicBufferProducer(),
262                              streamId);
263
264    if (s != OK) {
265        ALOGE("%s: Failure to create stream %dx%d (fmt=0x%x)", __FUNCTION__,
266                    width, height, format);
267        return s;
268    }
269
270    sp<ProFrameListener> frameAvailableListener =
271        new ProFrameListener(this, *streamId);
272
273    getStreamInfo(*streamId).cpuStream = true;
274    getStreamInfo(*streamId).cpuConsumer = cc;
275    getStreamInfo(*streamId).stc = stc;
276    // for lifetime management
277    getStreamInfo(*streamId).frameAvailableListener = frameAvailableListener;
278
279    cc->setFrameAvailableListener(frameAvailableListener);
280
281    *cpuConsumer = cc;
282
283    return s;
284}
285
286camera_metadata* ProCamera::getCameraInfo(int cameraId) {
287    ALOGV("%s: cameraId = %d", __FUNCTION__, cameraId);
288
289    sp <IProCameraUser> c = mCamera;
290    if (c == 0) return NULL;
291
292    camera_metadata* ptr = NULL;
293    status_t status = c->getCameraInfo(cameraId, &ptr);
294
295    if (status != OK) {
296        ALOGE("%s: Failed to get camera info, error = %d", __FUNCTION__, status);
297    }
298
299    return ptr;
300}
301
302status_t ProCamera::createDefaultRequest(int templateId,
303                                             camera_metadata** request) const {
304    ALOGV("%s: templateId = %d", __FUNCTION__, templateId);
305
306    sp <IProCameraUser> c = mCamera;
307    if (c == 0) return NO_INIT;
308
309    return c->createDefaultRequest(templateId, request);
310}
311
312void ProCamera::onFrameAvailable(int streamId) {
313    ALOGV("%s: streamId = %d", __FUNCTION__, streamId);
314
315    sp<ProCameraListener> listener = mListener;
316    StreamInfo& stream = getStreamInfo(streamId);
317
318    CpuConsumer::LockedBuffer buf;
319
320    if (listener.get() != NULL) {
321        if (listener->useOnFrameAvailable()) {
322            listener->onFrameAvailable(streamId, stream.cpuConsumer);
323            return;
324        }
325    }
326
327    // Unblock waitForFrame(id) callers
328    {
329        Mutex::Autolock al(mWaitMutex);
330        getStreamInfo(streamId).frameReady++;
331        mWaitCondition.broadcast();
332    }
333}
334
335int ProCamera::waitForFrameBuffer(int streamId) {
336    status_t stat = BAD_VALUE;
337    Mutex::Autolock al(mWaitMutex);
338
339    StreamInfo& si = getStreamInfo(streamId);
340
341    if (si.frameReady > 0) {
342        int numFrames = si.frameReady;
343        si.frameReady = 0;
344        return numFrames;
345    } else {
346        while (true) {
347            stat = mWaitCondition.waitRelative(mWaitMutex,
348                                                mWaitTimeout);
349            if (stat != OK) {
350                ALOGE("%s: Error while waiting for frame buffer: %d",
351                    __FUNCTION__, stat);
352                return stat;
353            }
354
355            if (si.frameReady > 0) {
356                int numFrames = si.frameReady;
357                si.frameReady = 0;
358                return numFrames;
359            }
360            // else it was some other stream that got unblocked
361        }
362    }
363
364    return stat;
365}
366
367int ProCamera::dropFrameBuffer(int streamId, int count) {
368    StreamInfo& si = getStreamInfo(streamId);
369
370    if (!si.cpuStream) {
371        return BAD_VALUE;
372    } else if (count < 0) {
373        return BAD_VALUE;
374    }
375
376    int numDropped = 0;
377    for (int i = 0; i < count; ++i) {
378        CpuConsumer::LockedBuffer buffer;
379        if (si.cpuConsumer->lockNextBuffer(&buffer) != OK) {
380            break;
381        }
382
383        si.cpuConsumer->unlockBuffer(buffer);
384        numDropped++;
385    }
386
387    return numDropped;
388}
389
390status_t ProCamera::waitForFrameMetadata() {
391    status_t stat = BAD_VALUE;
392    Mutex::Autolock al(mWaitMutex);
393
394    if (mMetadataReady) {
395        return OK;
396    } else {
397        while (true) {
398            stat = mWaitCondition.waitRelative(mWaitMutex,
399                                               mWaitTimeout);
400
401            if (stat != OK) {
402                ALOGE("%s: Error while waiting for metadata: %d",
403                        __FUNCTION__, stat);
404                return stat;
405            }
406
407            if (mMetadataReady) {
408                mMetadataReady = false;
409                return OK;
410            }
411            // else it was some other stream or metadata
412        }
413    }
414
415    return stat;
416}
417
418CameraMetadata ProCamera::consumeFrameMetadata() {
419    Mutex::Autolock al(mWaitMutex);
420
421    // Destructive: Subsequent calls return empty metadatas
422    CameraMetadata tmp = mLatestMetadata;
423    mLatestMetadata.release();
424
425    return tmp;
426}
427
428ProCamera::StreamInfo& ProCamera::getStreamInfo(int streamId) {
429    return mStreams.editValueFor(streamId);
430}
431
432}; // namespace android
433