Camera2Client.cpp revision 907e5651c18d0e25073743a49a685fe1a385939a 
1/*
2 * Copyright (C) 2012 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"
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 <cutils/properties.h>
25#include <gui/SurfaceTextureClient.h>
26#include <gui/Surface.h>
27#include "camera2/Parameters.h"
28#include "Camera2Client.h"
29
30#define ALOG1(...) ALOGD_IF(gLogLevel >= 1, __VA_ARGS__);
31#define ALOG2(...) ALOGD_IF(gLogLevel >= 2, __VA_ARGS__);
32
33namespace android {
34using namespace camera2;
35
36static int getCallingPid() {
37    return IPCThreadState::self()->getCallingPid();
38}
39
40static int getCallingUid() {
41    return IPCThreadState::self()->getCallingUid();
42}
43
44// Interface used by CameraService
45
46Camera2Client::Camera2Client(const sp<CameraService>& cameraService,
47        const sp<ICameraClient>& cameraClient,
48        int cameraId,
49        int cameraFacing,
50        int clientPid,
51        int servicePid):
52        Client(cameraService, cameraClient,
53                cameraId, cameraFacing, clientPid, servicePid),
54        mSharedCameraClient(cameraClient),
55        mParameters(cameraId, cameraFacing)
56{
57    ATRACE_CALL();
58    ALOGI("Camera %d: Opened", cameraId);
59
60    mDevice = new Camera2Device(cameraId);
61
62    SharedParameters::Lock l(mParameters);
63    l.mParameters.state = Parameters::DISCONNECTED;
64}
65
66status_t Camera2Client::checkPid(const char* checkLocation) const {
67    int callingPid = getCallingPid();
68    if (callingPid == mClientPid) return NO_ERROR;
69
70    ALOGE("%s: attempt to use a locked camera from a different process"
71            " (old pid %d, new pid %d)", checkLocation, mClientPid, callingPid);
72    return PERMISSION_DENIED;
73}
74
75status_t Camera2Client::initialize(camera_module_t *module)
76{
77    ATRACE_CALL();
78    ALOGV("%s: Initializing client for camera %d", __FUNCTION__, mCameraId);
79    status_t res;
80
81    res = mDevice->initialize(module);
82    if (res != OK) {
83        ALOGE("%s: Camera %d: unable to initialize device: %s (%d)",
84                __FUNCTION__, mCameraId, strerror(-res), res);
85        return NO_INIT;
86    }
87
88    res = mDevice->setNotifyCallback(this);
89
90    SharedParameters::Lock l(mParameters);
91
92    res = l.mParameters.initialize(&(mDevice->info()));
93    if (res != OK) {
94        ALOGE("%s: Camera %d: unable to build defaults: %s (%d)",
95                __FUNCTION__, mCameraId, strerror(-res), res);
96        return NO_INIT;
97    }
98
99    String8 threadName;
100
101    mStreamingProcessor = new StreamingProcessor(this);
102
103    mFrameProcessor = new FrameProcessor(this);
104    threadName = String8::format("C2-%d-FrameProc",
105            mCameraId);
106    mFrameProcessor->run(threadName.string());
107
108    mCaptureSequencer = new CaptureSequencer(this);
109    threadName = String8::format("C2-%d-CaptureSeq",
110            mCameraId);
111    mCaptureSequencer->run(threadName.string());
112
113    mJpegProcessor = new JpegProcessor(this, mCaptureSequencer);
114    threadName = String8::format("C2-%d-JpegProc",
115            mCameraId);
116    mJpegProcessor->run(threadName.string());
117
118    mZslProcessor = new ZslProcessor(this, mCaptureSequencer);
119    threadName = String8::format("C2-%d-ZslProc",
120            mCameraId);
121    mZslProcessor->run(threadName.string());
122
123    mCallbackProcessor = new CallbackProcessor(this);
124    threadName = String8::format("C2-%d-CallbkProc",
125            mCameraId);
126    mCallbackProcessor->run(threadName.string());
127
128    if (gLogLevel >= 1) {
129        ALOGD("%s: Default parameters converted from camera %d:", __FUNCTION__,
130              mCameraId);
131        ALOGD("%s", l.mParameters.paramsFlattened.string());
132    }
133
134    return OK;
135}
136
137Camera2Client::~Camera2Client() {
138    ATRACE_CALL();
139
140    mDestructionStarted = true;
141
142    disconnect();
143
144    ALOGI("Camera %d: Closed", mCameraId);
145}
146
147status_t Camera2Client::dump(int fd, const Vector<String16>& args) {
148    String8 result;
149    result.appendFormat("Client2[%d] (%p) PID: %d, dump:\n",
150            mCameraId,
151            getCameraClient()->asBinder().get(),
152            mClientPid);
153    result.append("  State: ");
154#define CASE_APPEND_ENUM(x) case x: result.append(#x "\n"); break;
155
156    const Parameters& p = mParameters.unsafeAccess();
157
158    result.append(Parameters::getStateName(p.state));
159
160    result.append("\n  Current parameters:\n");
161    result.appendFormat("    Preview size: %d x %d\n",
162            p.previewWidth, p.previewHeight);
163    result.appendFormat("    Preview FPS range: %d - %d\n",
164            p.previewFpsRange[0], p.previewFpsRange[1]);
165    result.appendFormat("    Preview HAL pixel format: 0x%x\n",
166            p.previewFormat);
167    result.appendFormat("    Preview transform: %x\n",
168            p.previewTransform);
169    result.appendFormat("    Picture size: %d x %d\n",
170            p.pictureWidth, p.pictureHeight);
171    result.appendFormat("    Jpeg thumbnail size: %d x %d\n",
172            p.jpegThumbSize[0], p.jpegThumbSize[1]);
173    result.appendFormat("    Jpeg quality: %d, thumbnail quality: %d\n",
174            p.jpegQuality, p.jpegThumbQuality);
175    result.appendFormat("    Jpeg rotation: %d\n", p.jpegRotation);
176    result.appendFormat("    GPS tags %s\n",
177            p.gpsEnabled ? "enabled" : "disabled");
178    if (p.gpsEnabled) {
179        result.appendFormat("    GPS lat x long x alt: %f x %f x %f\n",
180                p.gpsCoordinates[0], p.gpsCoordinates[1],
181                p.gpsCoordinates[2]);
182        result.appendFormat("    GPS timestamp: %lld\n",
183                p.gpsTimestamp);
184        result.appendFormat("    GPS processing method: %s\n",
185                p.gpsProcessingMethod.string());
186    }
187
188    result.append("    White balance mode: ");
189    switch (p.wbMode) {
190        CASE_APPEND_ENUM(ANDROID_CONTROL_AWB_AUTO)
191        CASE_APPEND_ENUM(ANDROID_CONTROL_AWB_INCANDESCENT)
192        CASE_APPEND_ENUM(ANDROID_CONTROL_AWB_FLUORESCENT)
193        CASE_APPEND_ENUM(ANDROID_CONTROL_AWB_WARM_FLUORESCENT)
194        CASE_APPEND_ENUM(ANDROID_CONTROL_AWB_DAYLIGHT)
195        CASE_APPEND_ENUM(ANDROID_CONTROL_AWB_CLOUDY_DAYLIGHT)
196        CASE_APPEND_ENUM(ANDROID_CONTROL_AWB_TWILIGHT)
197        CASE_APPEND_ENUM(ANDROID_CONTROL_AWB_SHADE)
198        default: result.append("UNKNOWN\n");
199    }
200
201    result.append("    Effect mode: ");
202    switch (p.effectMode) {
203        CASE_APPEND_ENUM(ANDROID_CONTROL_EFFECT_OFF)
204        CASE_APPEND_ENUM(ANDROID_CONTROL_EFFECT_MONO)
205        CASE_APPEND_ENUM(ANDROID_CONTROL_EFFECT_NEGATIVE)
206        CASE_APPEND_ENUM(ANDROID_CONTROL_EFFECT_SOLARIZE)
207        CASE_APPEND_ENUM(ANDROID_CONTROL_EFFECT_SEPIA)
208        CASE_APPEND_ENUM(ANDROID_CONTROL_EFFECT_POSTERIZE)
209        CASE_APPEND_ENUM(ANDROID_CONTROL_EFFECT_WHITEBOARD)
210        CASE_APPEND_ENUM(ANDROID_CONTROL_EFFECT_BLACKBOARD)
211        CASE_APPEND_ENUM(ANDROID_CONTROL_EFFECT_AQUA)
212        default: result.append("UNKNOWN\n");
213    }
214
215    result.append("    Antibanding mode: ");
216    switch (p.antibandingMode) {
217        CASE_APPEND_ENUM(ANDROID_CONTROL_AE_ANTIBANDING_AUTO)
218        CASE_APPEND_ENUM(ANDROID_CONTROL_AE_ANTIBANDING_OFF)
219        CASE_APPEND_ENUM(ANDROID_CONTROL_AE_ANTIBANDING_50HZ)
220        CASE_APPEND_ENUM(ANDROID_CONTROL_AE_ANTIBANDING_60HZ)
221        default: result.append("UNKNOWN\n");
222    }
223
224    result.append("    Scene mode: ");
225    switch (p.sceneMode) {
226        case ANDROID_CONTROL_SCENE_MODE_UNSUPPORTED:
227            result.append("AUTO\n"); break;
228        CASE_APPEND_ENUM(ANDROID_CONTROL_SCENE_MODE_ACTION)
229        CASE_APPEND_ENUM(ANDROID_CONTROL_SCENE_MODE_PORTRAIT)
230        CASE_APPEND_ENUM(ANDROID_CONTROL_SCENE_MODE_LANDSCAPE)
231        CASE_APPEND_ENUM(ANDROID_CONTROL_SCENE_MODE_NIGHT)
232        CASE_APPEND_ENUM(ANDROID_CONTROL_SCENE_MODE_NIGHT_PORTRAIT)
233        CASE_APPEND_ENUM(ANDROID_CONTROL_SCENE_MODE_THEATRE)
234        CASE_APPEND_ENUM(ANDROID_CONTROL_SCENE_MODE_BEACH)
235        CASE_APPEND_ENUM(ANDROID_CONTROL_SCENE_MODE_SNOW)
236        CASE_APPEND_ENUM(ANDROID_CONTROL_SCENE_MODE_SUNSET)
237        CASE_APPEND_ENUM(ANDROID_CONTROL_SCENE_MODE_STEADYPHOTO)
238        CASE_APPEND_ENUM(ANDROID_CONTROL_SCENE_MODE_FIREWORKS)
239        CASE_APPEND_ENUM(ANDROID_CONTROL_SCENE_MODE_SPORTS)
240        CASE_APPEND_ENUM(ANDROID_CONTROL_SCENE_MODE_PARTY)
241        CASE_APPEND_ENUM(ANDROID_CONTROL_SCENE_MODE_CANDLELIGHT)
242        CASE_APPEND_ENUM(ANDROID_CONTROL_SCENE_MODE_BARCODE)
243        default: result.append("UNKNOWN\n");
244    }
245
246    result.append("    Flash mode: ");
247    switch (p.flashMode) {
248        CASE_APPEND_ENUM(Parameters::FLASH_MODE_OFF)
249        CASE_APPEND_ENUM(Parameters::FLASH_MODE_AUTO)
250        CASE_APPEND_ENUM(Parameters::FLASH_MODE_ON)
251        CASE_APPEND_ENUM(Parameters::FLASH_MODE_TORCH)
252        CASE_APPEND_ENUM(Parameters::FLASH_MODE_RED_EYE)
253        CASE_APPEND_ENUM(Parameters::FLASH_MODE_INVALID)
254        default: result.append("UNKNOWN\n");
255    }
256
257    result.append("    Focus mode: ");
258    switch (p.focusMode) {
259        CASE_APPEND_ENUM(Parameters::FOCUS_MODE_AUTO)
260        CASE_APPEND_ENUM(Parameters::FOCUS_MODE_MACRO)
261        CASE_APPEND_ENUM(Parameters::FOCUS_MODE_CONTINUOUS_VIDEO)
262        CASE_APPEND_ENUM(Parameters::FOCUS_MODE_CONTINUOUS_PICTURE)
263        CASE_APPEND_ENUM(Parameters::FOCUS_MODE_EDOF)
264        CASE_APPEND_ENUM(Parameters::FOCUS_MODE_INFINITY)
265        CASE_APPEND_ENUM(Parameters::FOCUS_MODE_FIXED)
266        CASE_APPEND_ENUM(Parameters::FOCUS_MODE_INVALID)
267        default: result.append("UNKNOWN\n");
268    }
269
270    result.append("    Focusing areas:\n");
271    for (size_t i = 0; i < p.focusingAreas.size(); i++) {
272        result.appendFormat("      [ (%d, %d, %d, %d), weight %d ]\n",
273                p.focusingAreas[i].left,
274                p.focusingAreas[i].top,
275                p.focusingAreas[i].right,
276                p.focusingAreas[i].bottom,
277                p.focusingAreas[i].weight);
278    }
279
280    result.appendFormat("    Exposure compensation index: %d\n",
281            p.exposureCompensation);
282
283    result.appendFormat("    AE lock %s, AWB lock %s\n",
284            p.autoExposureLock ? "enabled" : "disabled",
285            p.autoWhiteBalanceLock ? "enabled" : "disabled" );
286
287    result.appendFormat("    Metering areas:\n");
288    for (size_t i = 0; i < p.meteringAreas.size(); i++) {
289        result.appendFormat("      [ (%d, %d, %d, %d), weight %d ]\n",
290                p.meteringAreas[i].left,
291                p.meteringAreas[i].top,
292                p.meteringAreas[i].right,
293                p.meteringAreas[i].bottom,
294                p.meteringAreas[i].weight);
295    }
296
297    result.appendFormat("    Zoom index: %d\n", p.zoom);
298    result.appendFormat("    Video size: %d x %d\n", p.videoWidth,
299            p.videoHeight);
300
301    result.appendFormat("    Recording hint is %s\n",
302            p.recordingHint ? "set" : "not set");
303
304    result.appendFormat("    Video stabilization is %s\n",
305            p.videoStabilization ? "enabled" : "disabled");
306
307    result.append("  Current streams:\n");
308    result.appendFormat("    Preview stream ID: %d\n",
309            getPreviewStreamId());
310    result.appendFormat("    Capture stream ID: %d\n",
311            getCaptureStreamId());
312    result.appendFormat("    Recording stream ID: %d\n",
313            getRecordingStreamId());
314
315    result.append("  Quirks for this camera:\n");
316    bool haveQuirk = false;
317    if (p.quirks.triggerAfWithAuto) {
318        result.appendFormat("    triggerAfWithAuto\n");
319        haveQuirk = true;
320    }
321    if (p.quirks.useZslFormat) {
322        result.appendFormat("    useZslFormat\n");
323        haveQuirk = true;
324    }
325    if (p.quirks.meteringCropRegion) {
326        result.appendFormat("    meteringCropRegion\n");
327        haveQuirk = true;
328    }
329    if (!haveQuirk) {
330        result.appendFormat("    none\n");
331    }
332
333    write(fd, result.string(), result.size());
334
335    mStreamingProcessor->dump(fd, args);
336
337    mCaptureSequencer->dump(fd, args);
338
339    mFrameProcessor->dump(fd, args);
340
341    mZslProcessor->dump(fd, args);
342
343    result = "  Device dump:\n";
344    write(fd, result.string(), result.size());
345
346    status_t res = mDevice->dump(fd, args);
347    if (res != OK) {
348        result = String8::format("   Error dumping device: %s (%d)",
349                strerror(-res), res);
350        write(fd, result.string(), result.size());
351    }
352
353#undef CASE_APPEND_ENUM
354    return NO_ERROR;
355}
356
357// ICamera interface
358
359void Camera2Client::disconnect() {
360    ATRACE_CALL();
361    Mutex::Autolock icl(mICameraLock);
362    status_t res;
363
364    // Allow both client and the media server to disconnect at all times
365    int callingPid = getCallingPid();
366    if (callingPid != mClientPid && callingPid != mServicePid) return;
367
368    if (mDevice == 0) return;
369
370    ALOGV("Camera %d: Shutting down", mCameraId);
371
372    stopPreviewL();
373
374    {
375        SharedParameters::Lock l(mParameters);
376        if (l.mParameters.state == Parameters::DISCONNECTED) return;
377        l.mParameters.state = Parameters::DISCONNECTED;
378    }
379
380    mStreamingProcessor->deletePreviewStream();
381    mStreamingProcessor->deleteRecordingStream();
382    mJpegProcessor->deleteStream();
383    mCallbackProcessor->deleteStream();
384    mZslProcessor->deleteStream();
385
386    mFrameProcessor->requestExit();
387    mCaptureSequencer->requestExit();
388    mJpegProcessor->requestExit();
389    mZslProcessor->requestExit();
390    mCallbackProcessor->requestExit();
391
392    ALOGV("Camera %d: Waiting for threads", mCameraId);
393
394    mFrameProcessor->join();
395    mCaptureSequencer->join();
396    mJpegProcessor->join();
397    mZslProcessor->join();
398    mCallbackProcessor->join();
399
400    ALOGV("Camera %d: Disconnecting device", mCameraId);
401
402    mDevice->disconnect();
403
404    mDevice.clear();
405
406    CameraService::Client::disconnect();
407}
408
409status_t Camera2Client::connect(const sp<ICameraClient>& client) {
410    ATRACE_CALL();
411    ALOGV("%s: E", __FUNCTION__);
412    Mutex::Autolock icl(mICameraLock);
413
414    if (mClientPid != 0 && getCallingPid() != mClientPid) {
415        ALOGE("%s: Camera %d: Connection attempt from pid %d; "
416                "current locked to pid %d", __FUNCTION__,
417                mCameraId, getCallingPid(), mClientPid);
418        return BAD_VALUE;
419    }
420
421    mClientPid = getCallingPid();
422
423    mCameraClient = client;
424    mSharedCameraClient = client;
425
426    return OK;
427}
428
429status_t Camera2Client::lock() {
430    ATRACE_CALL();
431    ALOGV("%s: E", __FUNCTION__);
432    Mutex::Autolock icl(mICameraLock);
433    ALOGV("%s: Camera %d: Lock call from pid %d; current client pid %d",
434            __FUNCTION__, mCameraId, getCallingPid(), mClientPid);
435
436    if (mClientPid == 0) {
437        mClientPid = getCallingPid();
438        return OK;
439    }
440
441    if (mClientPid != getCallingPid()) {
442        ALOGE("%s: Camera %d: Lock call from pid %d; currently locked to pid %d",
443                __FUNCTION__, mCameraId, getCallingPid(), mClientPid);
444        return EBUSY;
445    }
446
447    return OK;
448}
449
450status_t Camera2Client::unlock() {
451    ATRACE_CALL();
452    ALOGV("%s: E", __FUNCTION__);
453    Mutex::Autolock icl(mICameraLock);
454    ALOGV("%s: Camera %d: Unlock call from pid %d; current client pid %d",
455            __FUNCTION__, mCameraId, getCallingPid(), mClientPid);
456
457    if (mClientPid == getCallingPid()) {
458        SharedParameters::Lock l(mParameters);
459        if (l.mParameters.state == Parameters::RECORD ||
460                l.mParameters.state == Parameters::VIDEO_SNAPSHOT) {
461            ALOGD("Not allowed to unlock camera during recording.");
462            return INVALID_OPERATION;
463        }
464        mClientPid = 0;
465        mCameraClient.clear();
466        mSharedCameraClient.clear();
467        return OK;
468    }
469
470    ALOGE("%s: Camera %d: Unlock call from pid %d; currently locked to pid %d",
471            __FUNCTION__, mCameraId, getCallingPid(), mClientPid);
472    return EBUSY;
473}
474
475status_t Camera2Client::setPreviewDisplay(
476        const sp<Surface>& surface) {
477    ATRACE_CALL();
478    ALOGV("%s: E", __FUNCTION__);
479    Mutex::Autolock icl(mICameraLock);
480    status_t res;
481    if ( (res = checkPid(__FUNCTION__) ) != OK) return res;
482
483    sp<IBinder> binder;
484    sp<ANativeWindow> window;
485    if (surface != 0) {
486        binder = surface->asBinder();
487        window = surface;
488    }
489
490    return setPreviewWindowL(binder,window);
491}
492
493status_t Camera2Client::setPreviewTexture(
494        const sp<ISurfaceTexture>& surfaceTexture) {
495    ATRACE_CALL();
496    ALOGV("%s: E", __FUNCTION__);
497    Mutex::Autolock icl(mICameraLock);
498    status_t res;
499    if ( (res = checkPid(__FUNCTION__) ) != OK) return res;
500
501    sp<IBinder> binder;
502    sp<ANativeWindow> window;
503    if (surfaceTexture != 0) {
504        binder = surfaceTexture->asBinder();
505        window = new SurfaceTextureClient(surfaceTexture);
506    }
507    return setPreviewWindowL(binder, window);
508}
509
510status_t Camera2Client::setPreviewWindowL(const sp<IBinder>& binder,
511        sp<ANativeWindow> window) {
512    ATRACE_CALL();
513    status_t res;
514
515    if (binder == mPreviewSurface) {
516        ALOGV("%s: Camera %d: New window is same as old window",
517                __FUNCTION__, mCameraId);
518        return NO_ERROR;
519    }
520
521    SharedParameters::Lock l(mParameters);
522    switch (l.mParameters.state) {
523        case Parameters::DISCONNECTED:
524        case Parameters::RECORD:
525        case Parameters::STILL_CAPTURE:
526        case Parameters::VIDEO_SNAPSHOT:
527            ALOGE("%s: Camera %d: Cannot set preview display while in state %s",
528                    __FUNCTION__, mCameraId,
529                    Parameters::getStateName(l.mParameters.state));
530            return INVALID_OPERATION;
531        case Parameters::STOPPED:
532        case Parameters::WAITING_FOR_PREVIEW_WINDOW:
533            // OK
534            break;
535        case Parameters::PREVIEW:
536            // Already running preview - need to stop and create a new stream
537            // TODO: Optimize this so that we don't wait for old stream to drain
538            // before spinning up new stream
539            mStreamingProcessor->stopStream();
540            l.mParameters.state = Parameters::WAITING_FOR_PREVIEW_WINDOW;
541            break;
542    }
543
544    mPreviewSurface = binder;
545    res = mStreamingProcessor->setPreviewWindow(window);
546    if (res != OK) {
547        ALOGE("%s: Unable to set new preview window: %s (%d)",
548                __FUNCTION__, strerror(-res), res);
549        return res;
550    }
551
552    if (l.mParameters.state == Parameters::WAITING_FOR_PREVIEW_WINDOW) {
553        return startPreviewL(l.mParameters, false);
554    }
555
556    return OK;
557}
558
559void Camera2Client::setPreviewCallbackFlag(int flag) {
560    ATRACE_CALL();
561    ALOGV("%s: Camera %d: Flag 0x%x", __FUNCTION__, mCameraId, flag);
562    Mutex::Autolock icl(mICameraLock);
563    status_t res;
564    if ( checkPid(__FUNCTION__) != OK) return;
565
566    SharedParameters::Lock l(mParameters);
567    setPreviewCallbackFlagL(l.mParameters, flag);
568}
569
570void Camera2Client::setPreviewCallbackFlagL(Parameters &params, int flag) {
571    status_t res = OK;
572    if (flag & CAMERA_FRAME_CALLBACK_FLAG_ONE_SHOT_MASK) {
573        ALOGV("%s: setting oneshot", __FUNCTION__);
574        params.previewCallbackOneShot = true;
575    }
576    if (params.previewCallbackFlags != (uint32_t)flag) {
577        params.previewCallbackFlags = flag;
578        switch(params.state) {
579        case Parameters::PREVIEW:
580            res = startPreviewL(params, true);
581            break;
582        case Parameters::RECORD:
583        case Parameters::VIDEO_SNAPSHOT:
584            res = startRecordingL(params, true);
585            break;
586        default:
587            break;
588        }
589        if (res != OK) {
590            ALOGE("%s: Camera %d: Unable to refresh request in state %s",
591                    __FUNCTION__, mCameraId,
592                    Parameters::getStateName(params.state));
593        }
594    }
595
596}
597
598status_t Camera2Client::startPreview() {
599    ATRACE_CALL();
600    ALOGV("%s: E", __FUNCTION__);
601    Mutex::Autolock icl(mICameraLock);
602    status_t res;
603    if ( (res = checkPid(__FUNCTION__) ) != OK) return res;
604    SharedParameters::Lock l(mParameters);
605    return startPreviewL(l.mParameters, false);
606}
607
608status_t Camera2Client::startPreviewL(Parameters &params, bool restart) {
609    ATRACE_CALL();
610    status_t res;
611
612    ALOGV("%s: state == %d, restart = %d", __FUNCTION__, params.state, restart);
613
614    if (params.state == Parameters::PREVIEW && !restart) {
615        // Succeed attempt to re-enter preview state
616        ALOGI("%s: Not starting preview; already in preview state.",
617              __FUNCTION__);
618        return OK;
619    }
620    if (params.state > Parameters::PREVIEW && !restart) {
621        ALOGE("%s: Can't start preview in state %s",
622                __FUNCTION__,
623                Parameters::getStateName(params.state));
624        return INVALID_OPERATION;
625    }
626
627    if (!mStreamingProcessor->haveValidPreviewWindow()) {
628        params.state = Parameters::WAITING_FOR_PREVIEW_WINDOW;
629        return OK;
630    }
631    params.state = Parameters::STOPPED;
632
633    res = mStreamingProcessor->updatePreviewStream(params);
634    if (res != OK) {
635        ALOGE("%s: Camera %d: Unable to update preview stream: %s (%d)",
636                __FUNCTION__, mCameraId, strerror(-res), res);
637        return res;
638    }
639
640    Vector<uint8_t> outputStreams;
641    bool callbacksEnabled = params.previewCallbackFlags &
642        CAMERA_FRAME_CALLBACK_FLAG_ENABLE_MASK;
643    if (callbacksEnabled) {
644        res = mCallbackProcessor->updateStream(params);
645        if (res != OK) {
646            ALOGE("%s: Camera %d: Unable to update callback stream: %s (%d)",
647                    __FUNCTION__, mCameraId, strerror(-res), res);
648            return res;
649        }
650        outputStreams.push(getCallbackStreamId());
651    }
652    if (params.zslMode && !params.recordingHint) {
653        res = mZslProcessor->updateStream(params);
654        if (res != OK) {
655            ALOGE("%s: Camera %d: Unable to update ZSL stream: %s (%d)",
656                    __FUNCTION__, mCameraId, strerror(-res), res);
657            return res;
658        }
659        outputStreams.push(getZslStreamId());
660    }
661
662    outputStreams.push(getPreviewStreamId());
663
664    if (!params.recordingHint) {
665        if (!restart) {
666            res = mStreamingProcessor->updatePreviewRequest(params);
667            if (res != OK) {
668                ALOGE("%s: Camera %d: Can't set up preview request: "
669                        "%s (%d)", __FUNCTION__, mCameraId,
670                        strerror(-res), res);
671                return res;
672            }
673        }
674        res = mStreamingProcessor->startStream(StreamingProcessor::PREVIEW,
675                outputStreams);
676    } else {
677        // With recording hint set, we're going to be operating under the
678        // assumption that the user will record video. To optimize recording
679        // startup time, create the necessary output streams for recording and
680        // video snapshot now if they don't already exist.
681        res = mJpegProcessor->updateStream(params);
682        if (res != OK) {
683            ALOGE("%s: Camera %d: Can't pre-configure still image "
684                    "stream: %s (%d)",
685                    __FUNCTION__, mCameraId, strerror(-res), res);
686            return res;
687        }
688
689        if (!restart) {
690            res = mStreamingProcessor->updateRecordingRequest(params);
691            if (res != OK) {
692                ALOGE("%s: Camera %d: Can't set up preview request with "
693                        "record hint: %s (%d)", __FUNCTION__, mCameraId,
694                        strerror(-res), res);
695                return res;
696            }
697        }
698        res = mStreamingProcessor->startStream(StreamingProcessor::RECORD,
699                outputStreams);
700    }
701    if (res != OK) {
702        ALOGE("%s: Camera %d: Unable to start streaming preview: %s (%d)",
703                __FUNCTION__, mCameraId, strerror(-res), res);
704        return res;
705    }
706
707    params.state = Parameters::PREVIEW;
708    return OK;
709}
710
711void Camera2Client::stopPreview() {
712    ATRACE_CALL();
713    ALOGV("%s: E", __FUNCTION__);
714    Mutex::Autolock icl(mICameraLock);
715    status_t res;
716    if ( (res = checkPid(__FUNCTION__) ) != OK) return;
717    stopPreviewL();
718}
719
720void Camera2Client::stopPreviewL() {
721    ATRACE_CALL();
722    status_t res;
723    const nsecs_t kStopCaptureTimeout = 3000000000LL; // 3 seconds
724    Parameters::State state;
725    {
726        SharedParameters::Lock l(mParameters);
727        state = l.mParameters.state;
728    }
729
730    switch (state) {
731        case Parameters::DISCONNECTED:
732            ALOGE("%s: Camera %d: Call before initialized",
733                    __FUNCTION__, mCameraId);
734            break;
735        case Parameters::STOPPED:
736        case Parameters::VIDEO_SNAPSHOT:
737        case Parameters::STILL_CAPTURE:
738            mCaptureSequencer->waitUntilIdle(kStopCaptureTimeout);
739            // no break
740        case Parameters::RECORD:
741        case Parameters::PREVIEW:
742            mStreamingProcessor->stopStream();
743            res = mDevice->waitUntilDrained();
744            if (res != OK) {
745                ALOGE("%s: Camera %d: Waiting to stop streaming failed: %s (%d)",
746                        __FUNCTION__, mCameraId, strerror(-res), res);
747            }
748            // no break
749        case Parameters::WAITING_FOR_PREVIEW_WINDOW: {
750            SharedParameters::Lock l(mParameters);
751            l.mParameters.state = Parameters::STOPPED;
752            commandStopFaceDetectionL(l.mParameters);
753            break;
754        }
755        default:
756            ALOGE("%s: Camera %d: Unknown state %d", __FUNCTION__, mCameraId,
757                    state);
758    }
759}
760
761bool Camera2Client::previewEnabled() {
762    ATRACE_CALL();
763    Mutex::Autolock icl(mICameraLock);
764    status_t res;
765    if ( (res = checkPid(__FUNCTION__) ) != OK) return false;
766
767    SharedParameters::Lock l(mParameters);
768    return l.mParameters.state == Parameters::PREVIEW;
769}
770
771status_t Camera2Client::storeMetaDataInBuffers(bool enabled) {
772    ATRACE_CALL();
773    Mutex::Autolock icl(mICameraLock);
774    status_t res;
775    if ( (res = checkPid(__FUNCTION__) ) != OK) return res;
776
777    SharedParameters::Lock l(mParameters);
778    switch (l.mParameters.state) {
779        case Parameters::RECORD:
780        case Parameters::VIDEO_SNAPSHOT:
781            ALOGE("%s: Camera %d: Can't be called in state %s",
782                    __FUNCTION__, mCameraId,
783                    Parameters::getStateName(l.mParameters.state));
784            return INVALID_OPERATION;
785        default:
786            // OK
787            break;
788    }
789
790    l.mParameters.storeMetadataInBuffers = enabled;
791
792    return OK;
793}
794
795status_t Camera2Client::startRecording() {
796    ATRACE_CALL();
797    ALOGV("%s: E", __FUNCTION__);
798    Mutex::Autolock icl(mICameraLock);
799    status_t res;
800    if ( (res = checkPid(__FUNCTION__) ) != OK) return res;
801    SharedParameters::Lock l(mParameters);
802
803    return startRecordingL(l.mParameters, false);
804}
805
806status_t Camera2Client::startRecordingL(Parameters &params, bool restart) {
807    status_t res;
808
809    ALOGV("%s: state == %d, restart = %d", __FUNCTION__, params.state, restart);
810
811    switch (params.state) {
812        case Parameters::STOPPED:
813            res = startPreviewL(params, false);
814            if (res != OK) return res;
815            break;
816        case Parameters::PREVIEW:
817            // Ready to go
818            break;
819        case Parameters::RECORD:
820        case Parameters::VIDEO_SNAPSHOT:
821            // OK to call this when recording is already on, just skip unless
822            // we're looking to restart
823            if (!restart) return OK;
824            break;
825        default:
826            ALOGE("%s: Camera %d: Can't start recording in state %s",
827                    __FUNCTION__, mCameraId,
828                    Parameters::getStateName(params.state));
829            return INVALID_OPERATION;
830    };
831
832    if (!params.storeMetadataInBuffers) {
833        ALOGE("%s: Camera %d: Recording only supported in metadata mode, but "
834                "non-metadata recording mode requested!", __FUNCTION__,
835                mCameraId);
836        return INVALID_OPERATION;
837    }
838
839    if (!restart) {
840        mCameraService->playSound(CameraService::SOUND_RECORDING);
841        mStreamingProcessor->updateRecordingRequest(params);
842        if (res != OK) {
843            ALOGE("%s: Camera %d: Unable to update recording request: %s (%d)",
844                    __FUNCTION__, mCameraId, strerror(-res), res);
845            return res;
846        }
847    }
848
849    res = mStreamingProcessor->updateRecordingStream(params);
850    if (res != OK) {
851        ALOGE("%s: Camera %d: Unable to update recording stream: %s (%d)",
852                __FUNCTION__, mCameraId, strerror(-res), res);
853        return res;
854    }
855
856    Vector<uint8_t> outputStreams;
857    bool callbacksEnabled = params.previewCallbackFlags &
858        CAMERA_FRAME_CALLBACK_FLAG_ENABLE_MASK;
859    if (callbacksEnabled) {
860        res = mCallbackProcessor->updateStream(params);
861        if (res != OK) {
862            ALOGE("%s: Camera %d: Unable to update callback stream: %s (%d)",
863                    __FUNCTION__, mCameraId, strerror(-res), res);
864            return res;
865        }
866        outputStreams.push(getCallbackStreamId());
867    }
868    outputStreams.push(getPreviewStreamId());
869    outputStreams.push(getRecordingStreamId());
870
871    res = mStreamingProcessor->startStream(StreamingProcessor::RECORD,
872            outputStreams);
873    if (res != OK) {
874        ALOGE("%s: Camera %d: Unable to start recording stream: %s (%d)",
875                __FUNCTION__, mCameraId, strerror(-res), res);
876        return res;
877    }
878
879    if (params.state < Parameters::RECORD) {
880        params.state = Parameters::RECORD;
881    }
882
883    return OK;
884}
885
886void Camera2Client::stopRecording() {
887    ATRACE_CALL();
888    ALOGV("%s: E", __FUNCTION__);
889    Mutex::Autolock icl(mICameraLock);
890    SharedParameters::Lock l(mParameters);
891
892    status_t res;
893    if ( (res = checkPid(__FUNCTION__) ) != OK) return;
894
895    switch (l.mParameters.state) {
896        case Parameters::RECORD:
897            // OK to stop
898            break;
899        case Parameters::STOPPED:
900        case Parameters::PREVIEW:
901        case Parameters::STILL_CAPTURE:
902        case Parameters::VIDEO_SNAPSHOT:
903        default:
904            ALOGE("%s: Camera %d: Can't stop recording in state %s",
905                    __FUNCTION__, mCameraId,
906                    Parameters::getStateName(l.mParameters.state));
907            return;
908    };
909
910    mCameraService->playSound(CameraService::SOUND_RECORDING);
911
912    res = startPreviewL(l.mParameters, true);
913    if (res != OK) {
914        ALOGE("%s: Camera %d: Unable to return to preview",
915                __FUNCTION__, mCameraId);
916    }
917}
918
919bool Camera2Client::recordingEnabled() {
920    ATRACE_CALL();
921    Mutex::Autolock icl(mICameraLock);
922
923    if ( checkPid(__FUNCTION__) != OK) return false;
924
925    return recordingEnabledL();
926}
927
928bool Camera2Client::recordingEnabledL() {
929    ATRACE_CALL();
930    SharedParameters::Lock l(mParameters);
931
932    return (l.mParameters.state == Parameters::RECORD
933            || l.mParameters.state == Parameters::VIDEO_SNAPSHOT);
934}
935
936void Camera2Client::releaseRecordingFrame(const sp<IMemory>& mem) {
937    ATRACE_CALL();
938    Mutex::Autolock icl(mICameraLock);
939    if ( checkPid(__FUNCTION__) != OK) return;
940
941    mStreamingProcessor->releaseRecordingFrame(mem);
942}
943
944status_t Camera2Client::autoFocus() {
945    ATRACE_CALL();
946    Mutex::Autolock icl(mICameraLock);
947    ALOGV("%s: Camera %d", __FUNCTION__, mCameraId);
948    status_t res;
949    if ( (res = checkPid(__FUNCTION__) ) != OK) return res;
950
951    int triggerId;
952    {
953        SharedParameters::Lock l(mParameters);
954        if (l.mParameters.state < Parameters::PREVIEW) {
955            return INVALID_OPERATION;
956        }
957
958        /**
959          * If the camera does not support auto-focus, it is a no-op and
960          * onAutoFocus(boolean, Camera) callback will be called immediately
961          * with a fake value of success set to true.
962          */
963        if (l.mParameters.focusMode == Parameters::FOCUS_MODE_FIXED) {
964            SharedCameraClient::Lock l(mSharedCameraClient);
965            if (l.mCameraClient != 0) {
966                l.mCameraClient->notifyCallback(CAMERA_MSG_FOCUS,
967                    /*success*/1, 0);
968            }
969
970            return OK;
971        }
972
973        if (l.mParameters.quirks.triggerAfWithAuto &&
974                l.mParameters.sceneMode != ANDROID_CONTROL_SCENE_MODE_UNSUPPORTED &&
975                l.mParameters.focusMode != Parameters::FOCUS_MODE_AUTO) {
976            ALOGV("%s: Quirk: Switching from focusMode %d to AUTO",
977                    __FUNCTION__, l.mParameters.focusMode);
978            l.mParameters.shadowFocusMode = l.mParameters.focusMode;
979            l.mParameters.focusMode = Parameters::FOCUS_MODE_AUTO;
980            updateRequests(l.mParameters);
981        }
982
983        l.mParameters.currentAfTriggerId = ++l.mParameters.afTriggerCounter;
984        triggerId = l.mParameters.currentAfTriggerId;
985    }
986    syncWithDevice();
987
988    mDevice->triggerAutofocus(triggerId);
989
990    return OK;
991}
992
993status_t Camera2Client::cancelAutoFocus() {
994    ATRACE_CALL();
995    Mutex::Autolock icl(mICameraLock);
996    ALOGV("%s: Camera %d", __FUNCTION__, mCameraId);
997    status_t res;
998    if ( (res = checkPid(__FUNCTION__) ) != OK) return res;
999
1000    int triggerId;
1001    {
1002        SharedParameters::Lock l(mParameters);
1003        triggerId = ++l.mParameters.afTriggerCounter;
1004
1005        // When using triggerAfWithAuto quirk, may need to reset focus mode to
1006        // the real state at this point.
1007        if (l.mParameters.shadowFocusMode != Parameters::FOCUS_MODE_INVALID) {
1008            ALOGV("%s: Quirk: Restoring focus mode to %d", __FUNCTION__,
1009                    l.mParameters.shadowFocusMode);
1010            l.mParameters.focusMode = l.mParameters.shadowFocusMode;
1011            l.mParameters.shadowFocusMode = Parameters::FOCUS_MODE_INVALID;
1012            updateRequests(l.mParameters);
1013        }
1014    }
1015    syncWithDevice();
1016
1017    mDevice->triggerCancelAutofocus(triggerId);
1018
1019    return OK;
1020}
1021
1022status_t Camera2Client::takePicture(int msgType) {
1023    ATRACE_CALL();
1024    Mutex::Autolock icl(mICameraLock);
1025    status_t res;
1026    if ( (res = checkPid(__FUNCTION__) ) != OK) return res;
1027
1028    SharedParameters::Lock l(mParameters);
1029    switch (l.mParameters.state) {
1030        case Parameters::DISCONNECTED:
1031        case Parameters::STOPPED:
1032        case Parameters::WAITING_FOR_PREVIEW_WINDOW:
1033            ALOGE("%s: Camera %d: Cannot take picture without preview enabled",
1034                    __FUNCTION__, mCameraId);
1035            return INVALID_OPERATION;
1036        case Parameters::PREVIEW:
1037            // Good to go for takePicture
1038            res = commandStopFaceDetectionL(l.mParameters);
1039            if (res != OK) {
1040                ALOGE("%s: Camera %d: Unable to stop face detection for still capture",
1041                        __FUNCTION__, mCameraId);
1042                return res;
1043            }
1044            l.mParameters.state = Parameters::STILL_CAPTURE;
1045            break;
1046        case Parameters::RECORD:
1047            // Good to go for video snapshot
1048            l.mParameters.state = Parameters::VIDEO_SNAPSHOT;
1049            break;
1050        case Parameters::STILL_CAPTURE:
1051        case Parameters::VIDEO_SNAPSHOT:
1052            ALOGE("%s: Camera %d: Already taking a picture",
1053                    __FUNCTION__, mCameraId);
1054            return INVALID_OPERATION;
1055    }
1056
1057    ALOGV("%s: Camera %d: Starting picture capture", __FUNCTION__, mCameraId);
1058
1059    res = mJpegProcessor->updateStream(l.mParameters);
1060    if (res != OK) {
1061        ALOGE("%s: Camera %d: Can't set up still image stream: %s (%d)",
1062                __FUNCTION__, mCameraId, strerror(-res), res);
1063        return res;
1064    }
1065
1066    // Need HAL to have correct settings before (possibly) triggering precapture
1067    syncWithDevice();
1068
1069    res = mCaptureSequencer->startCapture();
1070    if (res != OK) {
1071        ALOGE("%s: Camera %d: Unable to start capture: %s (%d)",
1072                __FUNCTION__, mCameraId, strerror(-res), res);
1073    }
1074
1075    return res;
1076}
1077
1078status_t Camera2Client::setParameters(const String8& params) {
1079    ATRACE_CALL();
1080    ALOGV("%s: Camera %d", __FUNCTION__, mCameraId);
1081    Mutex::Autolock icl(mICameraLock);
1082    status_t res;
1083    if ( (res = checkPid(__FUNCTION__) ) != OK) return res;
1084
1085    SharedParameters::Lock l(mParameters);
1086
1087    res = l.mParameters.set(params);
1088    if (res != OK) return res;
1089
1090    res = updateRequests(l.mParameters);
1091
1092    return res;
1093}
1094
1095String8 Camera2Client::getParameters() const {
1096    ATRACE_CALL();
1097    ALOGV("%s: Camera %d", __FUNCTION__, mCameraId);
1098    Mutex::Autolock icl(mICameraLock);
1099    if ( checkPid(__FUNCTION__) != OK) return String8();
1100
1101    SharedParameters::ReadLock l(mParameters);
1102
1103    return l.mParameters.get();
1104}
1105
1106status_t Camera2Client::sendCommand(int32_t cmd, int32_t arg1, int32_t arg2) {
1107    ATRACE_CALL();
1108    Mutex::Autolock icl(mICameraLock);
1109    status_t res;
1110    if ( (res = checkPid(__FUNCTION__) ) != OK) return res;
1111
1112    ALOGV("%s: Camera %d: Command %d (%d, %d)", __FUNCTION__, mCameraId,
1113            cmd, arg1, arg2);
1114
1115    switch (cmd) {
1116        case CAMERA_CMD_START_SMOOTH_ZOOM:
1117            return commandStartSmoothZoomL();
1118        case CAMERA_CMD_STOP_SMOOTH_ZOOM:
1119            return commandStopSmoothZoomL();
1120        case CAMERA_CMD_SET_DISPLAY_ORIENTATION:
1121            return commandSetDisplayOrientationL(arg1);
1122        case CAMERA_CMD_ENABLE_SHUTTER_SOUND:
1123            return commandEnableShutterSoundL(arg1 == 1);
1124        case CAMERA_CMD_PLAY_RECORDING_SOUND:
1125            return commandPlayRecordingSoundL();
1126        case CAMERA_CMD_START_FACE_DETECTION:
1127            return commandStartFaceDetectionL(arg1);
1128        case CAMERA_CMD_STOP_FACE_DETECTION: {
1129            SharedParameters::Lock l(mParameters);
1130            return commandStopFaceDetectionL(l.mParameters);
1131        }
1132        case CAMERA_CMD_ENABLE_FOCUS_MOVE_MSG:
1133            return commandEnableFocusMoveMsgL(arg1 == 1);
1134        case CAMERA_CMD_PING:
1135            return commandPingL();
1136        case CAMERA_CMD_SET_VIDEO_BUFFER_COUNT:
1137            return commandSetVideoBufferCountL(arg1);
1138        default:
1139            ALOGE("%s: Unknown command %d (arguments %d, %d)",
1140                    __FUNCTION__, cmd, arg1, arg2);
1141            return BAD_VALUE;
1142    }
1143}
1144
1145status_t Camera2Client::commandStartSmoothZoomL() {
1146    ALOGE("%s: Unimplemented!", __FUNCTION__);
1147    return OK;
1148}
1149
1150status_t Camera2Client::commandStopSmoothZoomL() {
1151    ALOGE("%s: Unimplemented!", __FUNCTION__);
1152    return OK;
1153}
1154
1155status_t Camera2Client::commandSetDisplayOrientationL(int degrees) {
1156    int transform = Parameters::degToTransform(degrees,
1157            mCameraFacing == CAMERA_FACING_FRONT);
1158    if (transform == -1) {
1159        ALOGE("%s: Camera %d: Error setting %d as display orientation value",
1160                __FUNCTION__, mCameraId, degrees);
1161        return BAD_VALUE;
1162    }
1163    SharedParameters::Lock l(mParameters);
1164    if (transform != l.mParameters.previewTransform &&
1165            getPreviewStreamId() != NO_STREAM) {
1166        mDevice->setStreamTransform(getPreviewStreamId(), transform);
1167    }
1168    l.mParameters.previewTransform = transform;
1169    return OK;
1170}
1171
1172status_t Camera2Client::commandEnableShutterSoundL(bool enable) {
1173    SharedParameters::Lock l(mParameters);
1174    if (enable) {
1175        l.mParameters.playShutterSound = true;
1176        return OK;
1177    }
1178
1179    // Disabling shutter sound may not be allowed. In that case only
1180    // allow the mediaserver process to disable the sound.
1181    char value[PROPERTY_VALUE_MAX];
1182    property_get("ro.camera.sound.forced", value, "0");
1183    if (strncmp(value, "0", 2) != 0) {
1184        // Disabling shutter sound is not allowed. Deny if the current
1185        // process is not mediaserver.
1186        if (getCallingPid() != getpid()) {
1187            ALOGE("Failed to disable shutter sound. Permission denied (pid %d)",
1188                    getCallingPid());
1189            return PERMISSION_DENIED;
1190        }
1191    }
1192
1193    l.mParameters.playShutterSound = false;
1194    return OK;
1195}
1196
1197status_t Camera2Client::commandPlayRecordingSoundL() {
1198    mCameraService->playSound(CameraService::SOUND_RECORDING);
1199    return OK;
1200}
1201
1202status_t Camera2Client::commandStartFaceDetectionL(int type) {
1203    ALOGV("%s: Camera %d: Starting face detection",
1204          __FUNCTION__, mCameraId);
1205    status_t res;
1206    SharedParameters::Lock l(mParameters);
1207    switch (l.mParameters.state) {
1208        case Parameters::DISCONNECTED:
1209        case Parameters::STOPPED:
1210        case Parameters::WAITING_FOR_PREVIEW_WINDOW:
1211        case Parameters::STILL_CAPTURE:
1212            ALOGE("%s: Camera %d: Cannot start face detection without preview active",
1213                    __FUNCTION__, mCameraId);
1214            return INVALID_OPERATION;
1215        case Parameters::PREVIEW:
1216        case Parameters::RECORD:
1217        case Parameters::VIDEO_SNAPSHOT:
1218            // Good to go for starting face detect
1219            break;
1220    }
1221    // Ignoring type
1222    if (l.mParameters.fastInfo.bestFaceDetectMode ==
1223            ANDROID_STATS_FACE_DETECTION_OFF) {
1224        ALOGE("%s: Camera %d: Face detection not supported",
1225                __FUNCTION__, mCameraId);
1226        return INVALID_OPERATION;
1227    }
1228    if (l.mParameters.enableFaceDetect) return OK;
1229
1230    l.mParameters.enableFaceDetect = true;
1231
1232    res = updateRequests(l.mParameters);
1233
1234    return res;
1235}
1236
1237status_t Camera2Client::commandStopFaceDetectionL(Parameters &params) {
1238    status_t res = OK;
1239    ALOGV("%s: Camera %d: Stopping face detection",
1240          __FUNCTION__, mCameraId);
1241
1242    if (!params.enableFaceDetect) return OK;
1243
1244    params.enableFaceDetect = false;
1245
1246    if (params.state == Parameters::PREVIEW
1247            || params.state == Parameters::RECORD
1248            || params.state == Parameters::VIDEO_SNAPSHOT) {
1249        res = updateRequests(params);
1250    }
1251
1252    return res;
1253}
1254
1255status_t Camera2Client::commandEnableFocusMoveMsgL(bool enable) {
1256    SharedParameters::Lock l(mParameters);
1257    l.mParameters.enableFocusMoveMessages = enable;
1258
1259    return OK;
1260}
1261
1262status_t Camera2Client::commandPingL() {
1263    // Always ping back if access is proper and device is alive
1264    SharedParameters::Lock l(mParameters);
1265    if (l.mParameters.state != Parameters::DISCONNECTED) {
1266        return OK;
1267    } else {
1268        return NO_INIT;
1269    }
1270}
1271
1272status_t Camera2Client::commandSetVideoBufferCountL(size_t count) {
1273    if (recordingEnabledL()) {
1274        ALOGE("%s: Camera %d: Error setting video buffer count after "
1275                "recording was started", __FUNCTION__, mCameraId);
1276        return INVALID_OPERATION;
1277    }
1278
1279    return mStreamingProcessor->setRecordingBufferCount(count);
1280}
1281
1282/** Device-related methods */
1283
1284void Camera2Client::notifyError(int errorCode, int arg1, int arg2) {
1285    ALOGE("Error condition %d reported by HAL, arguments %d, %d", errorCode, arg1, arg2);
1286}
1287
1288void Camera2Client::notifyShutter(int frameNumber, nsecs_t timestamp) {
1289    ALOGV("%s: Shutter notification for frame %d at time %lld", __FUNCTION__,
1290            frameNumber, timestamp);
1291}
1292
1293void Camera2Client::notifyAutoFocus(uint8_t newState, int triggerId) {
1294    ALOGV("%s: Autofocus state now %d, last trigger %d",
1295            __FUNCTION__, newState, triggerId);
1296    bool sendCompletedMessage = false;
1297    bool sendMovingMessage = false;
1298
1299    bool success = false;
1300    bool afInMotion = false;
1301    {
1302        SharedParameters::Lock l(mParameters);
1303        switch (l.mParameters.focusMode) {
1304            case Parameters::FOCUS_MODE_AUTO:
1305            case Parameters::FOCUS_MODE_MACRO:
1306                // Don't send notifications upstream if they're not for the current AF
1307                // trigger. For example, if cancel was called in between, or if we
1308                // already sent a notification about this AF call.
1309                if (triggerId != l.mParameters.currentAfTriggerId) break;
1310                switch (newState) {
1311                    case ANDROID_CONTROL_AF_STATE_FOCUSED_LOCKED:
1312                        success = true;
1313                        // no break
1314                    case ANDROID_CONTROL_AF_STATE_NOT_FOCUSED_LOCKED:
1315                        sendCompletedMessage = true;
1316                        l.mParameters.currentAfTriggerId = -1;
1317                        break;
1318                    case ANDROID_CONTROL_AF_STATE_ACTIVE_SCAN:
1319                        // Just starting focusing, ignore
1320                        break;
1321                    case ANDROID_CONTROL_AF_STATE_INACTIVE:
1322                    case ANDROID_CONTROL_AF_STATE_PASSIVE_SCAN:
1323                    case ANDROID_CONTROL_AF_STATE_PASSIVE_FOCUSED:
1324                    default:
1325                        // Unexpected in AUTO/MACRO mode
1326                        ALOGE("%s: Unexpected AF state transition in AUTO/MACRO mode: %d",
1327                                __FUNCTION__, newState);
1328                        break;
1329                }
1330                break;
1331            case Parameters::FOCUS_MODE_CONTINUOUS_VIDEO:
1332            case Parameters::FOCUS_MODE_CONTINUOUS_PICTURE:
1333                switch (newState) {
1334                    case ANDROID_CONTROL_AF_STATE_FOCUSED_LOCKED:
1335                        success = true;
1336                        // no break
1337                    case ANDROID_CONTROL_AF_STATE_NOT_FOCUSED_LOCKED:
1338                        // Don't send notifications upstream if they're not for
1339                        // the current AF trigger. For example, if cancel was
1340                        // called in between, or if we already sent a
1341                        // notification about this AF call.
1342                        // Send both a 'AF done' callback and a 'AF move' callback
1343                        if (triggerId != l.mParameters.currentAfTriggerId) break;
1344                        sendCompletedMessage = true;
1345                        afInMotion = false;
1346                        if (l.mParameters.enableFocusMoveMessages &&
1347                                l.mParameters.afInMotion) {
1348                            sendMovingMessage = true;
1349                        }
1350                        l.mParameters.currentAfTriggerId = -1;
1351                        break;
1352                    case ANDROID_CONTROL_AF_STATE_INACTIVE:
1353                        // Cancel was called, or we switched state; care if
1354                        // currently moving
1355                        afInMotion = false;
1356                        if (l.mParameters.enableFocusMoveMessages &&
1357                                l.mParameters.afInMotion) {
1358                            sendMovingMessage = true;
1359                        }
1360                        break;
1361                    case ANDROID_CONTROL_AF_STATE_PASSIVE_SCAN:
1362                        // Start passive scan, inform upstream
1363                        afInMotion = true;
1364                        // no break
1365                    case ANDROID_CONTROL_AF_STATE_PASSIVE_FOCUSED:
1366                        // Stop passive scan, inform upstream
1367                        if (l.mParameters.enableFocusMoveMessages) {
1368                            sendMovingMessage = true;
1369                        }
1370                        break;
1371                }
1372                l.mParameters.afInMotion = afInMotion;
1373                break;
1374            case Parameters::FOCUS_MODE_EDOF:
1375            case Parameters::FOCUS_MODE_INFINITY:
1376            case Parameters::FOCUS_MODE_FIXED:
1377            default:
1378                if (newState != ANDROID_CONTROL_AF_STATE_INACTIVE) {
1379                    ALOGE("%s: Unexpected AF state change %d "
1380                            "(ID %d) in focus mode %d",
1381                          __FUNCTION__, newState, triggerId,
1382                            l.mParameters.focusMode);
1383                }
1384        }
1385    }
1386    if (sendMovingMessage) {
1387        SharedCameraClient::Lock l(mSharedCameraClient);
1388        if (l.mCameraClient != 0) {
1389            l.mCameraClient->notifyCallback(CAMERA_MSG_FOCUS_MOVE,
1390                    afInMotion ? 1 : 0, 0);
1391        }
1392    }
1393    if (sendCompletedMessage) {
1394        SharedCameraClient::Lock l(mSharedCameraClient);
1395        if (l.mCameraClient != 0) {
1396            l.mCameraClient->notifyCallback(CAMERA_MSG_FOCUS,
1397                    success ? 1 : 0, 0);
1398        }
1399    }
1400}
1401
1402void Camera2Client::notifyAutoExposure(uint8_t newState, int triggerId) {
1403    ALOGV("%s: Autoexposure state now %d, last trigger %d",
1404            __FUNCTION__, newState, triggerId);
1405    mCaptureSequencer->notifyAutoExposure(newState, triggerId);
1406}
1407
1408void Camera2Client::notifyAutoWhitebalance(uint8_t newState, int triggerId) {
1409    ALOGV("%s: Auto-whitebalance state now %d, last trigger %d",
1410            __FUNCTION__, newState, triggerId);
1411}
1412
1413int Camera2Client::getCameraId() const {
1414    return mCameraId;
1415}
1416
1417const sp<Camera2Device>& Camera2Client::getCameraDevice() {
1418    return mDevice;
1419}
1420
1421const sp<CameraService>& Camera2Client::getCameraService() {
1422    return mCameraService;
1423}
1424
1425camera2::SharedParameters& Camera2Client::getParameters() {
1426    return mParameters;
1427}
1428
1429int Camera2Client::getPreviewStreamId() const {
1430    return mStreamingProcessor->getPreviewStreamId();
1431}
1432
1433int Camera2Client::getCaptureStreamId() const {
1434    return mJpegProcessor->getStreamId();
1435}
1436
1437int Camera2Client::getCallbackStreamId() const {
1438    return mCallbackProcessor->getStreamId();
1439}
1440
1441int Camera2Client::getRecordingStreamId() const {
1442    return mStreamingProcessor->getRecordingStreamId();
1443}
1444
1445int Camera2Client::getZslStreamId() const {
1446    return mZslProcessor->getStreamId();
1447}
1448
1449status_t Camera2Client::registerFrameListener(int32_t minId, int32_t maxId,
1450        wp<camera2::FrameProcessor::FilteredListener> listener) {
1451    return mFrameProcessor->registerListener(minId, maxId, listener);
1452}
1453
1454status_t Camera2Client::removeFrameListener(int32_t minId, int32_t maxId,
1455        wp<camera2::FrameProcessor::FilteredListener> listener) {
1456    return mFrameProcessor->removeListener(minId, maxId, listener);
1457}
1458
1459status_t Camera2Client::stopStream() {
1460    return mStreamingProcessor->stopStream();
1461}
1462
1463Camera2Client::SharedCameraClient::Lock::Lock(SharedCameraClient &client):
1464        mCameraClient(client.mCameraClient),
1465        mSharedClient(client) {
1466    mSharedClient.mCameraClientLock.lock();
1467}
1468
1469Camera2Client::SharedCameraClient::Lock::~Lock() {
1470    mSharedClient.mCameraClientLock.unlock();
1471}
1472
1473Camera2Client::SharedCameraClient::SharedCameraClient(const sp<ICameraClient>&client):
1474        mCameraClient(client) {
1475}
1476
1477Camera2Client::SharedCameraClient& Camera2Client::SharedCameraClient::operator=(
1478        const sp<ICameraClient>&client) {
1479    Mutex::Autolock l(mCameraClientLock);
1480    mCameraClient = client;
1481    return *this;
1482}
1483
1484void Camera2Client::SharedCameraClient::clear() {
1485    Mutex::Autolock l(mCameraClientLock);
1486    mCameraClient.clear();
1487}
1488
1489const int32_t Camera2Client::kPreviewRequestIdStart;
1490const int32_t Camera2Client::kPreviewRequestIdEnd;
1491const int32_t Camera2Client::kRecordingRequestIdStart;
1492const int32_t Camera2Client::kRecordingRequestIdEnd;
1493const int32_t Camera2Client::kCaptureRequestIdStart;
1494const int32_t Camera2Client::kCaptureRequestIdEnd;
1495
1496/** Utility methods */
1497
1498status_t Camera2Client::updateRequests(Parameters &params) {
1499    status_t res;
1500
1501    ALOGV("%s: Camera %d: state = %d", __FUNCTION__, getCameraId(), params.state);
1502
1503    res = mStreamingProcessor->incrementStreamingIds();
1504    if (res != OK) {
1505        ALOGE("%s: Camera %d: Unable to increment request IDs: %s (%d)",
1506                __FUNCTION__, mCameraId, strerror(-res), res);
1507        return res;
1508    }
1509
1510    res = mStreamingProcessor->updatePreviewRequest(params);
1511    if (res != OK) {
1512        ALOGE("%s: Camera %d: Unable to update preview request: %s (%d)",
1513                __FUNCTION__, mCameraId, strerror(-res), res);
1514        return res;
1515    }
1516    res = mStreamingProcessor->updateRecordingRequest(params);
1517    if (res != OK) {
1518        ALOGE("%s: Camera %d: Unable to update recording request: %s (%d)",
1519                __FUNCTION__, mCameraId, strerror(-res), res);
1520        return res;
1521    }
1522
1523    if (params.state == Parameters::PREVIEW) {
1524        res = startPreviewL(params, true);
1525        if (res != OK) {
1526            ALOGE("%s: Camera %d: Error streaming new preview request: %s (%d)",
1527                    __FUNCTION__, mCameraId, strerror(-res), res);
1528            return res;
1529        }
1530    } else if (params.state == Parameters::RECORD ||
1531            params.state == Parameters::VIDEO_SNAPSHOT) {
1532        res = startRecordingL(params, true);
1533        if (res != OK) {
1534            ALOGE("%s: Camera %d: Error streaming new record request: %s (%d)",
1535                    __FUNCTION__, mCameraId, strerror(-res), res);
1536            return res;
1537        }
1538    }
1539    return res;
1540}
1541
1542
1543size_t Camera2Client::calculateBufferSize(int width, int height,
1544        int format, int stride) {
1545    switch (format) {
1546        case HAL_PIXEL_FORMAT_YCbCr_422_SP: // NV16
1547            return width * height * 2;
1548        case HAL_PIXEL_FORMAT_YCrCb_420_SP: // NV21
1549            return width * height * 3 / 2;
1550        case HAL_PIXEL_FORMAT_YCbCr_422_I: // YUY2
1551            return width * height * 2;
1552        case HAL_PIXEL_FORMAT_YV12: {      // YV12
1553            size_t ySize = stride * height;
1554            size_t uvStride = (stride / 2 + 0xF) & ~0xF;
1555            size_t uvSize = uvStride * height / 2;
1556            return ySize + uvSize * 2;
1557        }
1558        case HAL_PIXEL_FORMAT_RGB_565:
1559            return width * height * 2;
1560        case HAL_PIXEL_FORMAT_RGBA_8888:
1561            return width * height * 4;
1562        case HAL_PIXEL_FORMAT_RAW_SENSOR:
1563            return width * height * 2;
1564        default:
1565            ALOGE("%s: Unknown preview format: %x",
1566                    __FUNCTION__,  format);
1567            return 0;
1568    }
1569}
1570
1571status_t Camera2Client::syncWithDevice() {
1572    ATRACE_CALL();
1573    const nsecs_t kMaxSyncTimeout = 100000000; // 100 ms
1574    status_t res;
1575
1576    int32_t activeRequestId = mStreamingProcessor->getActiveRequestId();
1577    if (activeRequestId == 0) return OK;
1578
1579    res = mDevice->waitUntilRequestReceived(activeRequestId, kMaxSyncTimeout);
1580    if (res == TIMED_OUT) {
1581        ALOGE("%s: Camera %d: Timed out waiting sync with HAL",
1582                __FUNCTION__, mCameraId);
1583    } else if (res != OK) {
1584        ALOGE("%s: Camera %d: Error while waiting to sync with HAL",
1585                __FUNCTION__, mCameraId);
1586    }
1587    return res;
1588}
1589
1590} // namespace android
1591