Camera2Client.cpp revision da6665cbd06ca58d3357c3002b7366d13e23f152 
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 "Camera2Client"
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 <media/hardware/MetadataBufferType.h>
28
29#include "Camera2Client.h"
30
31#define ALOG1(...) ALOGD_IF(gLogLevel >= 1, __VA_ARGS__);
32#define ALOG2(...) ALOGD_IF(gLogLevel >= 2, __VA_ARGS__);
33
34namespace android {
35
36using namespace camera2;
37
38static int getCallingPid() {
39    return IPCThreadState::self()->getCallingPid();
40}
41
42static int getCallingUid() {
43    return IPCThreadState::self()->getCallingUid();
44}
45
46// Interface used by CameraService
47
48Camera2Client::Camera2Client(const sp<CameraService>& cameraService,
49        const sp<ICameraClient>& cameraClient,
50        int cameraId,
51        int cameraFacing,
52        int clientPid):
53        Client(cameraService, cameraClient,
54                cameraId, cameraFacing, clientPid),
55        mSharedCameraClient(cameraClient),
56        mParameters(cameraId, cameraFacing),
57        mPreviewStreamId(NO_STREAM),
58        mRecordingStreamId(NO_STREAM),
59        mRecordingHeapCount(kDefaultRecordingHeapCount)
60{
61    ATRACE_CALL();
62    ALOGI("Camera %d: Opened", cameraId);
63
64    mDevice = new Camera2Device(cameraId);
65
66    SharedParameters::Lock l(mParameters);
67    l.mParameters.state = Parameters::DISCONNECTED;
68
69    char value[PROPERTY_VALUE_MAX];
70    property_get("camera.zsl_mode", value, "0");
71    if (!strcmp(value,"1")) {
72        ALOGI("Camera %d: Enabling ZSL mode", cameraId);
73        l.mParameters.zslMode = true;
74    } else {
75        l.mParameters.zslMode = false;
76    }
77}
78
79status_t Camera2Client::checkPid(const char* checkLocation) const {
80    int callingPid = getCallingPid();
81    if (callingPid == mClientPid) return NO_ERROR;
82
83    ALOGE("%s: attempt to use a locked camera from a different process"
84            " (old pid %d, new pid %d)", checkLocation, mClientPid, callingPid);
85    return PERMISSION_DENIED;
86}
87
88status_t Camera2Client::initialize(camera_module_t *module)
89{
90    ATRACE_CALL();
91    ALOGV("%s: Initializing client for camera %d", __FUNCTION__, mCameraId);
92    status_t res;
93
94    res = mDevice->initialize(module);
95    if (res != OK) {
96        ALOGE("%s: Camera %d: unable to initialize device: %s (%d)",
97                __FUNCTION__, mCameraId, strerror(-res), res);
98        return NO_INIT;
99    }
100
101    res = mDevice->setNotifyCallback(this);
102
103    SharedParameters::Lock l(mParameters);
104
105    res = l.mParameters.initialize(&(mDevice->info()));
106    if (res != OK) {
107        ALOGE("%s: Camera %d: unable to build defaults: %s (%d)",
108                __FUNCTION__, mCameraId, strerror(-res), res);
109        return NO_INIT;
110    }
111
112    String8 threadName;
113
114    mFrameProcessor = new FrameProcessor(this);
115    threadName = String8::format("Camera2Client[%d]::FrameProcessor",
116            mCameraId);
117    mFrameProcessor->run(threadName.string());
118
119    mCaptureSequencer = new CaptureSequencer(this);
120    threadName = String8::format("Camera2Client[%d]::CaptureSequencer",
121            mCameraId);
122    mCaptureSequencer->run(threadName.string());
123
124    mJpegProcessor = new JpegProcessor(this, mCaptureSequencer);
125    threadName = String8::format("Camera2Client[%d]::JpegProcessor",
126            mCameraId);
127    mJpegProcessor->run(threadName.string());
128
129    mZslProcessor = new ZslProcessor(this, mCaptureSequencer);
130    threadName = String8::format("Camera2Client[%d]::ZslProcessor",
131            mCameraId);
132    mZslProcessor->run(threadName.string());
133
134    mCallbackProcessor = new CallbackProcessor(this);
135    threadName = String8::format("Camera2Client[%d]::CallbackProcessor",
136            mCameraId);
137    mCallbackProcessor->run(threadName.string());
138
139    if (gLogLevel >= 1) {
140        ALOGD("%s: Default parameters converted from camera %d:", __FUNCTION__,
141              mCameraId);
142        ALOGD("%s", l.mParameters.paramsFlattened.string());
143    }
144
145    return OK;
146}
147
148Camera2Client::~Camera2Client() {
149    ATRACE_CALL();
150    ALOGV("Camera %d: Shutting down", mCameraId);
151
152    mDestructionStarted = true;
153
154    // Rewrite mClientPid to allow shutdown by CameraService
155    mClientPid = getCallingPid();
156    disconnect();
157
158    mFrameProcessor->requestExit();
159    ALOGI("Camera %d: Closed", mCameraId);
160}
161
162status_t Camera2Client::dump(int fd, const Vector<String16>& args) {
163    String8 result;
164    result.appendFormat("Client2[%d] (%p) PID: %d, dump:\n",
165            mCameraId,
166            getCameraClient()->asBinder().get(),
167            mClientPid);
168    result.append("  State: ");
169#define CASE_APPEND_ENUM(x) case x: result.append(#x "\n"); break;
170
171    const Parameters& p = mParameters.unsafeAccess();
172
173    result.append(Parameters::getStateName(p.state));
174
175    result.append("\n  Current parameters:\n");
176    result.appendFormat("    Preview size: %d x %d\n",
177            p.previewWidth, p.previewHeight);
178    result.appendFormat("    Preview FPS range: %d - %d\n",
179            p.previewFpsRange[0], p.previewFpsRange[1]);
180    result.appendFormat("    Preview HAL pixel format: 0x%x\n",
181            p.previewFormat);
182    result.appendFormat("    Preview transform: %x\n",
183            p.previewTransform);
184    result.appendFormat("    Picture size: %d x %d\n",
185            p.pictureWidth, p.pictureHeight);
186    result.appendFormat("    Jpeg thumbnail size: %d x %d\n",
187            p.jpegThumbSize[0], p.jpegThumbSize[1]);
188    result.appendFormat("    Jpeg quality: %d, thumbnail quality: %d\n",
189            p.jpegQuality, p.jpegThumbQuality);
190    result.appendFormat("    Jpeg rotation: %d\n", p.jpegRotation);
191    result.appendFormat("    GPS tags %s\n",
192            p.gpsEnabled ? "enabled" : "disabled");
193    if (p.gpsEnabled) {
194        result.appendFormat("    GPS lat x long x alt: %f x %f x %f\n",
195                p.gpsCoordinates[0], p.gpsCoordinates[1],
196                p.gpsCoordinates[2]);
197        result.appendFormat("    GPS timestamp: %lld\n",
198                p.gpsTimestamp);
199        result.appendFormat("    GPS processing method: %s\n",
200                p.gpsProcessingMethod.string());
201    }
202
203    result.append("    White balance mode: ");
204    switch (p.wbMode) {
205        CASE_APPEND_ENUM(ANDROID_CONTROL_AWB_AUTO)
206        CASE_APPEND_ENUM(ANDROID_CONTROL_AWB_INCANDESCENT)
207        CASE_APPEND_ENUM(ANDROID_CONTROL_AWB_FLUORESCENT)
208        CASE_APPEND_ENUM(ANDROID_CONTROL_AWB_WARM_FLUORESCENT)
209        CASE_APPEND_ENUM(ANDROID_CONTROL_AWB_DAYLIGHT)
210        CASE_APPEND_ENUM(ANDROID_CONTROL_AWB_CLOUDY_DAYLIGHT)
211        CASE_APPEND_ENUM(ANDROID_CONTROL_AWB_TWILIGHT)
212        CASE_APPEND_ENUM(ANDROID_CONTROL_AWB_SHADE)
213        default: result.append("UNKNOWN\n");
214    }
215
216    result.append("    Effect mode: ");
217    switch (p.effectMode) {
218        CASE_APPEND_ENUM(ANDROID_CONTROL_EFFECT_OFF)
219        CASE_APPEND_ENUM(ANDROID_CONTROL_EFFECT_MONO)
220        CASE_APPEND_ENUM(ANDROID_CONTROL_EFFECT_NEGATIVE)
221        CASE_APPEND_ENUM(ANDROID_CONTROL_EFFECT_SOLARIZE)
222        CASE_APPEND_ENUM(ANDROID_CONTROL_EFFECT_SEPIA)
223        CASE_APPEND_ENUM(ANDROID_CONTROL_EFFECT_POSTERIZE)
224        CASE_APPEND_ENUM(ANDROID_CONTROL_EFFECT_WHITEBOARD)
225        CASE_APPEND_ENUM(ANDROID_CONTROL_EFFECT_BLACKBOARD)
226        CASE_APPEND_ENUM(ANDROID_CONTROL_EFFECT_AQUA)
227        default: result.append("UNKNOWN\n");
228    }
229
230    result.append("    Antibanding mode: ");
231    switch (p.antibandingMode) {
232        CASE_APPEND_ENUM(ANDROID_CONTROL_AE_ANTIBANDING_AUTO)
233        CASE_APPEND_ENUM(ANDROID_CONTROL_AE_ANTIBANDING_OFF)
234        CASE_APPEND_ENUM(ANDROID_CONTROL_AE_ANTIBANDING_50HZ)
235        CASE_APPEND_ENUM(ANDROID_CONTROL_AE_ANTIBANDING_60HZ)
236        default: result.append("UNKNOWN\n");
237    }
238
239    result.append("    Scene mode: ");
240    switch (p.sceneMode) {
241        case ANDROID_CONTROL_SCENE_MODE_UNSUPPORTED:
242            result.append("AUTO\n"); break;
243        CASE_APPEND_ENUM(ANDROID_CONTROL_SCENE_MODE_ACTION)
244        CASE_APPEND_ENUM(ANDROID_CONTROL_SCENE_MODE_PORTRAIT)
245        CASE_APPEND_ENUM(ANDROID_CONTROL_SCENE_MODE_LANDSCAPE)
246        CASE_APPEND_ENUM(ANDROID_CONTROL_SCENE_MODE_NIGHT)
247        CASE_APPEND_ENUM(ANDROID_CONTROL_SCENE_MODE_NIGHT_PORTRAIT)
248        CASE_APPEND_ENUM(ANDROID_CONTROL_SCENE_MODE_THEATRE)
249        CASE_APPEND_ENUM(ANDROID_CONTROL_SCENE_MODE_BEACH)
250        CASE_APPEND_ENUM(ANDROID_CONTROL_SCENE_MODE_SNOW)
251        CASE_APPEND_ENUM(ANDROID_CONTROL_SCENE_MODE_SUNSET)
252        CASE_APPEND_ENUM(ANDROID_CONTROL_SCENE_MODE_STEADYPHOTO)
253        CASE_APPEND_ENUM(ANDROID_CONTROL_SCENE_MODE_FIREWORKS)
254        CASE_APPEND_ENUM(ANDROID_CONTROL_SCENE_MODE_SPORTS)
255        CASE_APPEND_ENUM(ANDROID_CONTROL_SCENE_MODE_PARTY)
256        CASE_APPEND_ENUM(ANDROID_CONTROL_SCENE_MODE_CANDLELIGHT)
257        CASE_APPEND_ENUM(ANDROID_CONTROL_SCENE_MODE_BARCODE)
258        default: result.append("UNKNOWN\n");
259    }
260
261    result.append("    Flash mode: ");
262    switch (p.flashMode) {
263        CASE_APPEND_ENUM(Parameters::FLASH_MODE_OFF)
264        CASE_APPEND_ENUM(Parameters::FLASH_MODE_AUTO)
265        CASE_APPEND_ENUM(Parameters::FLASH_MODE_ON)
266        CASE_APPEND_ENUM(Parameters::FLASH_MODE_TORCH)
267        CASE_APPEND_ENUM(Parameters::FLASH_MODE_RED_EYE)
268        CASE_APPEND_ENUM(Parameters::FLASH_MODE_INVALID)
269        default: result.append("UNKNOWN\n");
270    }
271
272    result.append("    Focus mode: ");
273    switch (p.focusMode) {
274        CASE_APPEND_ENUM(Parameters::FOCUS_MODE_AUTO)
275        CASE_APPEND_ENUM(Parameters::FOCUS_MODE_MACRO)
276        CASE_APPEND_ENUM(Parameters::FOCUS_MODE_CONTINUOUS_VIDEO)
277        CASE_APPEND_ENUM(Parameters::FOCUS_MODE_CONTINUOUS_PICTURE)
278        CASE_APPEND_ENUM(Parameters::FOCUS_MODE_EDOF)
279        CASE_APPEND_ENUM(Parameters::FOCUS_MODE_INFINITY)
280        CASE_APPEND_ENUM(Parameters::FOCUS_MODE_FIXED)
281        CASE_APPEND_ENUM(Parameters::FOCUS_MODE_INVALID)
282        default: result.append("UNKNOWN\n");
283    }
284
285    result.append("    Focusing areas:\n");
286    for (size_t i = 0; i < p.focusingAreas.size(); i++) {
287        result.appendFormat("      [ (%d, %d, %d, %d), weight %d ]\n",
288                p.focusingAreas[i].left,
289                p.focusingAreas[i].top,
290                p.focusingAreas[i].right,
291                p.focusingAreas[i].bottom,
292                p.focusingAreas[i].weight);
293    }
294
295    result.appendFormat("    Exposure compensation index: %d\n",
296            p.exposureCompensation);
297
298    result.appendFormat("    AE lock %s, AWB lock %s\n",
299            p.autoExposureLock ? "enabled" : "disabled",
300            p.autoWhiteBalanceLock ? "enabled" : "disabled" );
301
302    result.appendFormat("    Metering areas:\n");
303    for (size_t i = 0; i < p.meteringAreas.size(); i++) {
304        result.appendFormat("      [ (%d, %d, %d, %d), weight %d ]\n",
305                p.meteringAreas[i].left,
306                p.meteringAreas[i].top,
307                p.meteringAreas[i].right,
308                p.meteringAreas[i].bottom,
309                p.meteringAreas[i].weight);
310    }
311
312    result.appendFormat("    Zoom index: %d\n", p.zoom);
313    result.appendFormat("    Video size: %d x %d\n", p.videoWidth,
314            p.videoHeight);
315
316    result.appendFormat("    Recording hint is %s\n",
317            p.recordingHint ? "set" : "not set");
318
319    result.appendFormat("    Video stabilization is %s\n",
320            p.videoStabilization ? "enabled" : "disabled");
321
322    result.append("  Current streams:\n");
323    result.appendFormat("    Preview stream ID: %d\n",
324            getPreviewStreamId());
325    result.appendFormat("    Capture stream ID: %d\n",
326            getCaptureStreamId());
327    result.appendFormat("    Recording stream ID: %d\n",
328            getRecordingStreamId());
329
330    result.append("  Current requests:\n");
331    if (mPreviewRequest.entryCount() != 0) {
332        result.append("    Preview request:\n");
333        write(fd, result.string(), result.size());
334        mPreviewRequest.dump(fd, 2, 6);
335    } else {
336        result.append("    Preview request: undefined\n");
337        write(fd, result.string(), result.size());
338    }
339
340    if (mRecordingRequest.entryCount() != 0) {
341        result = "    Recording request:\n";
342        write(fd, result.string(), result.size());
343        mRecordingRequest.dump(fd, 2, 6);
344    } else {
345        result = "    Recording request: undefined\n";
346        write(fd, result.string(), result.size());
347    }
348
349    mCaptureSequencer->dump(fd, args);
350
351    mFrameProcessor->dump(fd, args);
352
353    result = "  Device dump:\n";
354    write(fd, result.string(), result.size());
355
356    status_t res = mDevice->dump(fd, args);
357    if (res != OK) {
358        result = String8::format("   Error dumping device: %s (%d)",
359                strerror(-res), res);
360        write(fd, result.string(), result.size());
361    }
362
363#undef CASE_APPEND_ENUM
364    return NO_ERROR;
365}
366
367// ICamera interface
368
369void Camera2Client::disconnect() {
370    ATRACE_CALL();
371    ALOGV("%s: E", __FUNCTION__);
372    Mutex::Autolock icl(mICameraLock);
373    status_t res;
374    if ( (res = checkPid(__FUNCTION__) ) != OK) return;
375
376    if (mDevice == 0) return;
377
378    stopPreviewL();
379
380    if (mPreviewStreamId != NO_STREAM) {
381        mDevice->deleteStream(mPreviewStreamId);
382        mPreviewStreamId = NO_STREAM;
383    }
384
385    mJpegProcessor->deleteStream();
386
387    if (mRecordingStreamId != NO_STREAM) {
388        mDevice->deleteStream(mRecordingStreamId);
389        mRecordingStreamId = NO_STREAM;
390    }
391
392    mCallbackProcessor->deleteStream();
393
394    mDevice.clear();
395    SharedParameters::Lock l(mParameters);
396    l.mParameters.state = Parameters::DISCONNECTED;
397
398    CameraService::Client::disconnect();
399}
400
401status_t Camera2Client::connect(const sp<ICameraClient>& client) {
402    ATRACE_CALL();
403    ALOGV("%s: E", __FUNCTION__);
404    Mutex::Autolock icl(mICameraLock);
405
406    if (mClientPid != 0 && getCallingPid() != mClientPid) {
407        ALOGE("%s: Camera %d: Connection attempt from pid %d; "
408                "current locked to pid %d", __FUNCTION__,
409                mCameraId, getCallingPid(), mClientPid);
410        return BAD_VALUE;
411    }
412
413    mClientPid = getCallingPid();
414
415    mCameraClient = client;
416    mSharedCameraClient = client;
417
418    SharedParameters::Lock l(mParameters);
419    l.mParameters.state = Parameters::STOPPED;
420
421    return OK;
422}
423
424status_t Camera2Client::lock() {
425    ATRACE_CALL();
426    ALOGV("%s: E", __FUNCTION__);
427    Mutex::Autolock icl(mICameraLock);
428    ALOGV("%s: Camera %d: Lock call from pid %d; current client pid %d",
429            __FUNCTION__, mCameraId, getCallingPid(), mClientPid);
430
431    if (mClientPid == 0) {
432        mClientPid = getCallingPid();
433        return OK;
434    }
435
436    if (mClientPid != getCallingPid()) {
437        ALOGE("%s: Camera %d: Lock call from pid %d; currently locked to pid %d",
438                __FUNCTION__, mCameraId, getCallingPid(), mClientPid);
439        return EBUSY;
440    }
441
442    return OK;
443}
444
445status_t Camera2Client::unlock() {
446    ATRACE_CALL();
447    ALOGV("%s: E", __FUNCTION__);
448    Mutex::Autolock icl(mICameraLock);
449    ALOGV("%s: Camera %d: Unlock call from pid %d; current client pid %d",
450            __FUNCTION__, mCameraId, getCallingPid(), mClientPid);
451
452    // TODO: Check for uninterruptable conditions
453
454    if (mClientPid == getCallingPid()) {
455        mClientPid = 0;
456        mCameraClient.clear();
457        mSharedCameraClient.clear();
458        return OK;
459    }
460
461    ALOGE("%s: Camera %d: Unlock call from pid %d; currently locked to pid %d",
462            __FUNCTION__, mCameraId, getCallingPid(), mClientPid);
463    return EBUSY;
464}
465
466status_t Camera2Client::setPreviewDisplay(
467        const sp<Surface>& surface) {
468    ATRACE_CALL();
469    ALOGV("%s: E", __FUNCTION__);
470    Mutex::Autolock icl(mICameraLock);
471    status_t res;
472    if ( (res = checkPid(__FUNCTION__) ) != OK) return res;
473
474    sp<IBinder> binder;
475    sp<ANativeWindow> window;
476    if (surface != 0) {
477        binder = surface->asBinder();
478        window = surface;
479    }
480
481    return setPreviewWindowL(binder,window);
482}
483
484status_t Camera2Client::setPreviewTexture(
485        const sp<ISurfaceTexture>& surfaceTexture) {
486    ATRACE_CALL();
487    ALOGV("%s: E", __FUNCTION__);
488    Mutex::Autolock icl(mICameraLock);
489    status_t res;
490    if ( (res = checkPid(__FUNCTION__) ) != OK) return res;
491
492    sp<IBinder> binder;
493    sp<ANativeWindow> window;
494    if (surfaceTexture != 0) {
495        binder = surfaceTexture->asBinder();
496        window = new SurfaceTextureClient(surfaceTexture);
497    }
498    return setPreviewWindowL(binder, window);
499}
500
501status_t Camera2Client::setPreviewWindowL(const sp<IBinder>& binder,
502        sp<ANativeWindow> window) {
503    ATRACE_CALL();
504    status_t res;
505
506    if (binder == mPreviewSurface) {
507        ALOGV("%s: Camera %d: New window is same as old window",
508                __FUNCTION__, mCameraId);
509        return NO_ERROR;
510    }
511
512    SharedParameters::Lock l(mParameters);
513    switch (l.mParameters.state) {
514        case Parameters::DISCONNECTED:
515        case Parameters::RECORD:
516        case Parameters::STILL_CAPTURE:
517        case Parameters::VIDEO_SNAPSHOT:
518            ALOGE("%s: Camera %d: Cannot set preview display while in state %s",
519                    __FUNCTION__, mCameraId,
520                    Parameters::getStateName(l.mParameters.state));
521            return INVALID_OPERATION;
522        case Parameters::STOPPED:
523        case Parameters::WAITING_FOR_PREVIEW_WINDOW:
524            // OK
525            break;
526        case Parameters::PREVIEW:
527            // Already running preview - need to stop and create a new stream
528            // TODO: Optimize this so that we don't wait for old stream to drain
529            // before spinning up new stream
530            mDevice->clearStreamingRequest();
531            l.mParameters.state = Parameters::WAITING_FOR_PREVIEW_WINDOW;
532            break;
533    }
534
535    if (mPreviewStreamId != NO_STREAM) {
536        res = mDevice->waitUntilDrained();
537        if (res != OK) {
538            ALOGE("%s: Error waiting for preview to drain: %s (%d)",
539                    __FUNCTION__, strerror(-res), res);
540            return res;
541        }
542        res = mDevice->deleteStream(mPreviewStreamId);
543        if (res != OK) {
544            ALOGE("%s: Unable to delete old preview stream: %s (%d)",
545                    __FUNCTION__, strerror(-res), res);
546            return res;
547        }
548        mPreviewStreamId = NO_STREAM;
549    }
550
551    mPreviewSurface = binder;
552    mPreviewWindow = window;
553
554    if (l.mParameters.state == Parameters::WAITING_FOR_PREVIEW_WINDOW) {
555        return startPreviewL(l.mParameters, false);
556    }
557
558    return OK;
559}
560
561void Camera2Client::setPreviewCallbackFlag(int flag) {
562    ATRACE_CALL();
563    ALOGV("%s: Camera %d: Flag 0x%x", __FUNCTION__, mCameraId, flag);
564    Mutex::Autolock icl(mICameraLock);
565    status_t res;
566    if ( checkPid(__FUNCTION__) != OK) return;
567
568    SharedParameters::Lock l(mParameters);
569    setPreviewCallbackFlagL(l.mParameters, flag);
570}
571
572void Camera2Client::setPreviewCallbackFlagL(Parameters &params, int flag) {
573    status_t res = OK;
574    if (flag & CAMERA_FRAME_CALLBACK_FLAG_ONE_SHOT_MASK) {
575        ALOGV("%s: setting oneshot", __FUNCTION__);
576        params.previewCallbackOneShot = true;
577    }
578    if (params.previewCallbackFlags != (uint32_t)flag) {
579        params.previewCallbackFlags = flag;
580        switch(params.state) {
581        case Parameters::PREVIEW:
582            res = startPreviewL(params, true);
583            break;
584        case Parameters::RECORD:
585        case Parameters::VIDEO_SNAPSHOT:
586            res = startRecordingL(params, true);
587            break;
588        default:
589            break;
590        }
591        if (res != OK) {
592            ALOGE("%s: Camera %d: Unable to refresh request in state %s",
593                    __FUNCTION__, mCameraId,
594                    Parameters::getStateName(params.state));
595        }
596    }
597
598}
599
600status_t Camera2Client::startPreview() {
601    ATRACE_CALL();
602    ALOGV("%s: E", __FUNCTION__);
603    Mutex::Autolock icl(mICameraLock);
604    status_t res;
605    if ( (res = checkPid(__FUNCTION__) ) != OK) return res;
606    SharedParameters::Lock l(mParameters);
607    return startPreviewL(l.mParameters, false);
608}
609
610status_t Camera2Client::startPreviewL(Parameters &params, bool restart) {
611    ATRACE_CALL();
612    status_t res;
613    if (params.state >= Parameters::PREVIEW && !restart) {
614        ALOGE("%s: Can't start preview in state %s",
615                __FUNCTION__,
616                Parameters::getStateName(params.state));
617        return INVALID_OPERATION;
618    }
619
620    if (mPreviewWindow == 0) {
621        params.state = Parameters::WAITING_FOR_PREVIEW_WINDOW;
622        return OK;
623    }
624    params.state = Parameters::STOPPED;
625
626    res = updatePreviewStream(params);
627    if (res != OK) {
628        ALOGE("%s: Camera %d: Unable to update preview stream: %s (%d)",
629                __FUNCTION__, mCameraId, strerror(-res), res);
630        return res;
631    }
632    bool callbacksEnabled = params.previewCallbackFlags &
633        CAMERA_FRAME_CALLBACK_FLAG_ENABLE_MASK;
634    if (callbacksEnabled) {
635        res = mCallbackProcessor->updateStream(params);
636        if (res != OK) {
637            ALOGE("%s: Camera %d: Unable to update callback stream: %s (%d)",
638                    __FUNCTION__, mCameraId, strerror(-res), res);
639            return res;
640        }
641    }
642    if (params.zslMode) {
643        res = mZslProcessor->updateStream(params);
644        if (res != OK) {
645            ALOGE("%s: Camera %d: Unable to update ZSL stream: %s (%d)",
646                    __FUNCTION__, mCameraId, strerror(-res), res);
647            return res;
648        }
649    }
650
651    if (mPreviewRequest.entryCount() == 0) {
652        res = updatePreviewRequest(params);
653        if (res != OK) {
654            ALOGE("%s: Camera %d: Unable to create preview request: %s (%d)",
655                    __FUNCTION__, mCameraId, strerror(-res), res);
656            return res;
657        }
658    }
659
660    Vector<uint8_t> outputStreams;
661    outputStreams.push(getPreviewStreamId());
662
663    if (callbacksEnabled) {
664        outputStreams.push(getCallbackStreamId());
665    }
666    if (params.zslMode) {
667        outputStreams.push(getZslStreamId());
668    }
669
670    res = mPreviewRequest.update(
671        ANDROID_REQUEST_OUTPUT_STREAMS,
672        outputStreams);
673
674    if (res != OK) {
675        ALOGE("%s: Camera %d: Unable to set up preview request: %s (%d)",
676                __FUNCTION__, mCameraId, strerror(-res), res);
677        return res;
678    }
679    res = mPreviewRequest.sort();
680    if (res != OK) {
681        ALOGE("%s: Camera %d: Error sorting preview request: %s (%d)",
682                __FUNCTION__, mCameraId, strerror(-res), res);
683        return res;
684    }
685
686    res = mDevice->setStreamingRequest(mPreviewRequest);
687    if (res != OK) {
688        ALOGE("%s: Camera %d: Unable to set preview request to start preview: "
689                "%s (%d)",
690                __FUNCTION__, mCameraId, strerror(-res), res);
691        return res;
692    }
693    params.state = Parameters::PREVIEW;
694
695    return OK;
696}
697
698void Camera2Client::stopPreview() {
699    ATRACE_CALL();
700    ALOGV("%s: E", __FUNCTION__);
701    Mutex::Autolock icl(mICameraLock);
702    status_t res;
703    if ( (res = checkPid(__FUNCTION__) ) != OK) return;
704    stopPreviewL();
705}
706
707void Camera2Client::stopPreviewL() {
708    ATRACE_CALL();
709    Parameters::State state;
710    {
711        SharedParameters::Lock l(mParameters);
712        state = l.mParameters.state;
713    }
714
715    switch (state) {
716        case Parameters::DISCONNECTED:
717            ALOGE("%s: Camera %d: Call before initialized",
718                    __FUNCTION__, mCameraId);
719            break;
720        case Parameters::STOPPED:
721            break;
722        case Parameters::STILL_CAPTURE:
723            ALOGE("%s: Camera %d: Cannot stop preview during still capture.",
724                    __FUNCTION__, mCameraId);
725            break;
726        case Parameters::RECORD:
727            // no break - identical to preview
728        case Parameters::PREVIEW:
729            mDevice->clearStreamingRequest();
730            mDevice->waitUntilDrained();
731            // no break
732        case Parameters::WAITING_FOR_PREVIEW_WINDOW: {
733            SharedParameters::Lock l(mParameters);
734            l.mParameters.state = Parameters::STOPPED;
735            commandStopFaceDetectionL(l.mParameters);
736            break;
737        }
738        default:
739            ALOGE("%s: Camera %d: Unknown state %d", __FUNCTION__, mCameraId,
740                    state);
741    }
742}
743
744bool Camera2Client::previewEnabled() {
745    ATRACE_CALL();
746    Mutex::Autolock icl(mICameraLock);
747    status_t res;
748    if ( (res = checkPid(__FUNCTION__) ) != OK) return false;
749
750    SharedParameters::Lock l(mParameters);
751    return l.mParameters.state == Parameters::PREVIEW;
752}
753
754status_t Camera2Client::storeMetaDataInBuffers(bool enabled) {
755    ATRACE_CALL();
756    Mutex::Autolock icl(mICameraLock);
757    status_t res;
758    if ( (res = checkPid(__FUNCTION__) ) != OK) return res;
759
760    SharedParameters::Lock l(mParameters);
761    switch (l.mParameters.state) {
762        case Parameters::RECORD:
763        case Parameters::VIDEO_SNAPSHOT:
764            ALOGE("%s: Camera %d: Can't be called in state %s",
765                    __FUNCTION__, mCameraId,
766                    Parameters::getStateName(l.mParameters.state));
767            return INVALID_OPERATION;
768        default:
769            // OK
770            break;
771    }
772
773    l.mParameters.storeMetadataInBuffers = enabled;
774
775    return OK;
776}
777
778status_t Camera2Client::startRecording() {
779    ATRACE_CALL();
780    ALOGV("%s: E", __FUNCTION__);
781    Mutex::Autolock icl(mICameraLock);
782    status_t res;
783    if ( (res = checkPid(__FUNCTION__) ) != OK) return res;
784    SharedParameters::Lock l(mParameters);
785
786    return startRecordingL(l.mParameters, false);
787}
788
789status_t Camera2Client::startRecordingL(Parameters &params, bool restart) {
790    status_t res;
791    switch (params.state) {
792        case Parameters::STOPPED:
793            res = startPreviewL(params, false);
794            if (res != OK) return res;
795            break;
796        case Parameters::PREVIEW:
797            // Ready to go
798            break;
799        case Parameters::RECORD:
800        case Parameters::VIDEO_SNAPSHOT:
801            // OK to call this when recording is already on, just skip unless
802            // we're looking to restart
803            if (!restart) return OK;
804            break;
805        default:
806            ALOGE("%s: Camera %d: Can't start recording in state %s",
807                    __FUNCTION__, mCameraId,
808                    Parameters::getStateName(params.state));
809            return INVALID_OPERATION;
810    };
811
812    if (!params.storeMetadataInBuffers) {
813        ALOGE("%s: Camera %d: Recording only supported in metadata mode, but "
814                "non-metadata recording mode requested!", __FUNCTION__,
815                mCameraId);
816        return INVALID_OPERATION;
817    }
818
819    res = updateRecordingStream(params);
820    if (res != OK) {
821        ALOGE("%s: Camera %d: Unable to update recording stream: %s (%d)",
822                __FUNCTION__, mCameraId, strerror(-res), res);
823        return res;
824    }
825    bool callbacksEnabled = params.previewCallbackFlags &
826        CAMERA_FRAME_CALLBACK_FLAG_ENABLE_MASK;
827    if (callbacksEnabled) {
828        res = mCallbackProcessor->updateStream(params);
829        if (res != OK) {
830            ALOGE("%s: Camera %d: Unable to update callback stream: %s (%d)",
831                    __FUNCTION__, mCameraId, strerror(-res), res);
832            return res;
833        }
834    }
835
836    if (mRecordingRequest.entryCount() == 0) {
837        res = updateRecordingRequest(params);
838        if (res != OK) {
839            ALOGE("%s: Camera %d: Unable to create recording request: %s (%d)",
840                    __FUNCTION__, mCameraId, strerror(-res), res);
841            return res;
842        }
843    }
844
845    if (callbacksEnabled) {
846        uint8_t outputStreams[3] ={
847            getPreviewStreamId(),
848            getRecordingStreamId(),
849            getCallbackStreamId()
850        };
851        res = mRecordingRequest.update(
852                ANDROID_REQUEST_OUTPUT_STREAMS,
853                outputStreams, 3);
854    } else {
855        uint8_t outputStreams[2] = {
856            getPreviewStreamId(),
857            getRecordingStreamId()
858        };
859        res = mRecordingRequest.update(
860                ANDROID_REQUEST_OUTPUT_STREAMS,
861                outputStreams, 2);
862    }
863    if (res != OK) {
864        ALOGE("%s: Camera %d: Unable to set up recording request: %s (%d)",
865                __FUNCTION__, mCameraId, strerror(-res), res);
866        return res;
867    }
868    res = mRecordingRequest.sort();
869    if (res != OK) {
870        ALOGE("%s: Camera %d: Error sorting recording request: %s (%d)",
871                __FUNCTION__, mCameraId, strerror(-res), res);
872        return res;
873    }
874
875    res = mDevice->setStreamingRequest(mRecordingRequest);
876    if (res != OK) {
877        ALOGE("%s: Camera %d: Unable to set recording request to start "
878                "recording: %s (%d)", __FUNCTION__, mCameraId,
879                strerror(-res), res);
880        return res;
881    }
882    if (params.state < Parameters::RECORD) {
883        params.state = Parameters::RECORD;
884    }
885
886    return OK;
887}
888
889void Camera2Client::stopRecording() {
890    ATRACE_CALL();
891    ALOGV("%s: E", __FUNCTION__);
892    Mutex::Autolock icl(mICameraLock);
893    SharedParameters::Lock l(mParameters);
894
895    status_t res;
896    if ( (res = checkPid(__FUNCTION__) ) != OK) return;
897
898    switch (l.mParameters.state) {
899        case Parameters::RECORD:
900            // OK to stop
901            break;
902        case Parameters::STOPPED:
903        case Parameters::PREVIEW:
904        case Parameters::STILL_CAPTURE:
905        case Parameters::VIDEO_SNAPSHOT:
906        default:
907            ALOGE("%s: Camera %d: Can't stop recording in state %s",
908                    __FUNCTION__, mCameraId,
909                    Parameters::getStateName(l.mParameters.state));
910            return;
911    };
912
913    // Back to preview. Since record can only be reached through preview,
914    // all preview stream setup should be up to date.
915    res = mDevice->setStreamingRequest(mPreviewRequest);
916    if (res != OK) {
917        ALOGE("%s: Camera %d: Unable to switch back to preview request: "
918                "%s (%d)", __FUNCTION__, mCameraId, strerror(-res), res);
919        return;
920    }
921
922    // TODO: Should recording heap be freed? Can't do it yet since requests
923    // could still be in flight.
924
925    l.mParameters.state = Parameters::PREVIEW;
926}
927
928bool Camera2Client::recordingEnabled() {
929    ATRACE_CALL();
930    Mutex::Autolock icl(mICameraLock);
931
932    if ( checkPid(__FUNCTION__) != OK) return false;
933
934    return recordingEnabledL();
935}
936
937bool Camera2Client::recordingEnabledL() {
938    ATRACE_CALL();
939    SharedParameters::Lock l(mParameters);
940
941    return (l.mParameters.state == Parameters::RECORD
942            || l.mParameters.state == Parameters::VIDEO_SNAPSHOT);
943}
944
945void Camera2Client::releaseRecordingFrame(const sp<IMemory>& mem) {
946    ATRACE_CALL();
947    Mutex::Autolock icl(mICameraLock);
948    status_t res;
949    if ( checkPid(__FUNCTION__) != OK) return;
950
951    SharedParameters::Lock l(mParameters);
952
953    // Make sure this is for the current heap
954    ssize_t offset;
955    size_t size;
956    sp<IMemoryHeap> heap = mem->getMemory(&offset, &size);
957    if (heap->getHeapID() != mRecordingHeap->mHeap->getHeapID()) {
958        ALOGW("%s: Camera %d: Mismatched heap ID, ignoring release "
959                "(got %x, expected %x)", __FUNCTION__, mCameraId,
960                heap->getHeapID(), mRecordingHeap->mHeap->getHeapID());
961        return;
962    }
963    uint8_t *data = (uint8_t*)heap->getBase() + offset;
964    uint32_t type = *(uint32_t*)data;
965    if (type != kMetadataBufferTypeGrallocSource) {
966        ALOGE("%s: Camera %d: Recording frame type invalid (got %x, expected %x)",
967                __FUNCTION__, mCameraId, type, kMetadataBufferTypeGrallocSource);
968        return;
969    }
970
971    // Release the buffer back to the recording queue
972
973    buffer_handle_t imgHandle = *(buffer_handle_t*)(data + 4);
974
975    size_t itemIndex;
976    for (itemIndex = 0; itemIndex < mRecordingBuffers.size(); itemIndex++) {
977        const BufferItemConsumer::BufferItem item = mRecordingBuffers[itemIndex];
978        if (item.mBuf != BufferItemConsumer::INVALID_BUFFER_SLOT &&
979                item.mGraphicBuffer->handle == imgHandle) {
980            break;
981        }
982    }
983    if (itemIndex == mRecordingBuffers.size()) {
984        ALOGE("%s: Camera %d: Can't find buffer_handle_t %p in list of "
985                "outstanding buffers", __FUNCTION__, mCameraId, imgHandle);
986        return;
987    }
988
989    ALOGV("%s: Camera %d: Freeing buffer_handle_t %p", __FUNCTION__, mCameraId,
990            imgHandle);
991
992    res = mRecordingConsumer->releaseBuffer(mRecordingBuffers[itemIndex]);
993    if (res != OK) {
994        ALOGE("%s: Camera %d: Unable to free recording frame (buffer_handle_t: %p):"
995                "%s (%d)",
996                __FUNCTION__, mCameraId, imgHandle, strerror(-res), res);
997        return;
998    }
999    mRecordingBuffers.replaceAt(itemIndex);
1000
1001    mRecordingHeapFree++;
1002}
1003
1004status_t Camera2Client::autoFocus() {
1005    ATRACE_CALL();
1006    Mutex::Autolock icl(mICameraLock);
1007    status_t res;
1008    if ( (res = checkPid(__FUNCTION__) ) != OK) return res;
1009
1010    int triggerId;
1011    {
1012        SharedParameters::Lock l(mParameters);
1013        l.mParameters.currentAfTriggerId = ++l.mParameters.afTriggerCounter;
1014        triggerId = l.mParameters.currentAfTriggerId;
1015    }
1016
1017    mDevice->triggerAutofocus(triggerId);
1018
1019    return OK;
1020}
1021
1022status_t Camera2Client::cancelAutoFocus() {
1023    ATRACE_CALL();
1024    Mutex::Autolock icl(mICameraLock);
1025    status_t res;
1026    if ( (res = checkPid(__FUNCTION__) ) != OK) return res;
1027
1028    int triggerId;
1029    {
1030        SharedParameters::Lock l(mParameters);
1031        triggerId = ++l.mParameters.afTriggerCounter;
1032    }
1033
1034    mDevice->triggerCancelAutofocus(triggerId);
1035
1036    return OK;
1037}
1038
1039status_t Camera2Client::takePicture(int msgType) {
1040    ATRACE_CALL();
1041    Mutex::Autolock icl(mICameraLock);
1042    status_t res;
1043    if ( (res = checkPid(__FUNCTION__) ) != OK) return res;
1044
1045    SharedParameters::Lock l(mParameters);
1046    switch (l.mParameters.state) {
1047        case Parameters::DISCONNECTED:
1048        case Parameters::STOPPED:
1049        case Parameters::WAITING_FOR_PREVIEW_WINDOW:
1050            ALOGE("%s: Camera %d: Cannot take picture without preview enabled",
1051                    __FUNCTION__, mCameraId);
1052            return INVALID_OPERATION;
1053        case Parameters::PREVIEW:
1054            // Good to go for takePicture
1055            res = commandStopFaceDetectionL(l.mParameters);
1056            if (res != OK) {
1057                ALOGE("%s: Camera %d: Unable to stop face detection for still capture",
1058                        __FUNCTION__, mCameraId);
1059                return res;
1060            }
1061            l.mParameters.state = Parameters::STILL_CAPTURE;
1062            break;
1063        case Parameters::RECORD:
1064            // Good to go for video snapshot
1065            l.mParameters.state = Parameters::VIDEO_SNAPSHOT;
1066            break;
1067        case Parameters::STILL_CAPTURE:
1068        case Parameters::VIDEO_SNAPSHOT:
1069            ALOGE("%s: Camera %d: Already taking a picture",
1070                    __FUNCTION__, mCameraId);
1071            return INVALID_OPERATION;
1072    }
1073
1074    ALOGV("%s: Camera %d: Starting picture capture", __FUNCTION__, mCameraId);
1075
1076    res = mJpegProcessor->updateStream(l.mParameters);
1077    if (res != OK) {
1078        ALOGE("%s: Camera %d: Can't set up still image stream: %s (%d)",
1079                __FUNCTION__, mCameraId, strerror(-res), res);
1080        return res;
1081    }
1082
1083    res = mCaptureSequencer->startCapture();
1084    if (res != OK) {
1085        ALOGE("%s: Camera %d: Unable to start capture: %s (%d)",
1086                __FUNCTION__, mCameraId, strerror(-res), res);
1087    }
1088
1089    return res;
1090}
1091
1092status_t Camera2Client::setParameters(const String8& params) {
1093    ATRACE_CALL();
1094    ALOGV("%s: E", __FUNCTION__);
1095    Mutex::Autolock icl(mICameraLock);
1096    status_t res;
1097    if ( (res = checkPid(__FUNCTION__) ) != OK) return res;
1098
1099    SharedParameters::Lock l(mParameters);
1100
1101    res = l.mParameters.set(params);
1102    if (res != OK) return res;
1103
1104    res = updateRequests(l.mParameters);
1105
1106    return res;
1107}
1108
1109String8 Camera2Client::getParameters() const {
1110    ATRACE_CALL();
1111    Mutex::Autolock icl(mICameraLock);
1112    if ( checkPid(__FUNCTION__) != OK) return String8();
1113
1114    SharedParameters::ReadLock l(mParameters);
1115
1116    // TODO: Deal with focus distances
1117    return l.mParameters.paramsFlattened;
1118}
1119
1120status_t Camera2Client::sendCommand(int32_t cmd, int32_t arg1, int32_t arg2) {
1121    ATRACE_CALL();
1122    Mutex::Autolock icl(mICameraLock);
1123    status_t res;
1124    if ( (res = checkPid(__FUNCTION__) ) != OK) return res;
1125
1126    ALOGV("%s: Camera %d: Command %d (%d, %d)", __FUNCTION__, mCameraId,
1127            cmd, arg1, arg2);
1128
1129    switch (cmd) {
1130        case CAMERA_CMD_START_SMOOTH_ZOOM:
1131            return commandStartSmoothZoomL();
1132        case CAMERA_CMD_STOP_SMOOTH_ZOOM:
1133            return commandStopSmoothZoomL();
1134        case CAMERA_CMD_SET_DISPLAY_ORIENTATION:
1135            return commandSetDisplayOrientationL(arg1);
1136        case CAMERA_CMD_ENABLE_SHUTTER_SOUND:
1137            return commandEnableShutterSoundL(arg1 == 1);
1138        case CAMERA_CMD_PLAY_RECORDING_SOUND:
1139            return commandPlayRecordingSoundL();
1140        case CAMERA_CMD_START_FACE_DETECTION:
1141            return commandStartFaceDetectionL(arg1);
1142        case CAMERA_CMD_STOP_FACE_DETECTION: {
1143            SharedParameters::Lock l(mParameters);
1144            return commandStopFaceDetectionL(l.mParameters);
1145        }
1146        case CAMERA_CMD_ENABLE_FOCUS_MOVE_MSG:
1147            return commandEnableFocusMoveMsgL(arg1 == 1);
1148        case CAMERA_CMD_PING:
1149            return commandPingL();
1150        case CAMERA_CMD_SET_VIDEO_BUFFER_COUNT:
1151            return commandSetVideoBufferCountL(arg1);
1152        default:
1153            ALOGE("%s: Unknown command %d (arguments %d, %d)",
1154                    __FUNCTION__, cmd, arg1, arg2);
1155            return BAD_VALUE;
1156    }
1157}
1158
1159status_t Camera2Client::commandStartSmoothZoomL() {
1160    ALOGE("%s: Unimplemented!", __FUNCTION__);
1161    return OK;
1162}
1163
1164status_t Camera2Client::commandStopSmoothZoomL() {
1165    ALOGE("%s: Unimplemented!", __FUNCTION__);
1166    return OK;
1167}
1168
1169status_t Camera2Client::commandSetDisplayOrientationL(int degrees) {
1170    int transform = Parameters::degToTransform(degrees,
1171            mCameraFacing == CAMERA_FACING_FRONT);
1172    if (transform == -1) {
1173        ALOGE("%s: Camera %d: Error setting %d as display orientation value",
1174                __FUNCTION__, mCameraId, degrees);
1175        return BAD_VALUE;
1176    }
1177    SharedParameters::Lock l(mParameters);
1178    if (transform != l.mParameters.previewTransform &&
1179            mPreviewStreamId != NO_STREAM) {
1180        mDevice->setStreamTransform(mPreviewStreamId, transform);
1181    }
1182    l.mParameters.previewTransform = transform;
1183    return OK;
1184}
1185
1186status_t Camera2Client::commandEnableShutterSoundL(bool enable) {
1187    SharedParameters::Lock l(mParameters);
1188    if (enable) {
1189        l.mParameters.playShutterSound = true;
1190        return OK;
1191    }
1192
1193    // Disabling shutter sound may not be allowed. In that case only
1194    // allow the mediaserver process to disable the sound.
1195    char value[PROPERTY_VALUE_MAX];
1196    property_get("ro.camera.sound.forced", value, "0");
1197    if (strncmp(value, "0", 2) != 0) {
1198        // Disabling shutter sound is not allowed. Deny if the current
1199        // process is not mediaserver.
1200        if (getCallingPid() != getpid()) {
1201            ALOGE("Failed to disable shutter sound. Permission denied (pid %d)",
1202                    getCallingPid());
1203            return PERMISSION_DENIED;
1204        }
1205    }
1206
1207    l.mParameters.playShutterSound = false;
1208    return OK;
1209}
1210
1211status_t Camera2Client::commandPlayRecordingSoundL() {
1212    mCameraService->playSound(CameraService::SOUND_RECORDING);
1213    return OK;
1214}
1215
1216status_t Camera2Client::commandStartFaceDetectionL(int type) {
1217    ALOGV("%s: Camera %d: Starting face detection",
1218          __FUNCTION__, mCameraId);
1219    status_t res;
1220    SharedParameters::Lock l(mParameters);
1221    switch (l.mParameters.state) {
1222        case Parameters::DISCONNECTED:
1223        case Parameters::STOPPED:
1224        case Parameters::WAITING_FOR_PREVIEW_WINDOW:
1225        case Parameters::STILL_CAPTURE:
1226            ALOGE("%s: Camera %d: Cannot start face detection without preview active",
1227                    __FUNCTION__, mCameraId);
1228            return INVALID_OPERATION;
1229        case Parameters::PREVIEW:
1230        case Parameters::RECORD:
1231        case Parameters::VIDEO_SNAPSHOT:
1232            // Good to go for starting face detect
1233            break;
1234    }
1235    // Ignoring type
1236    if (l.mParameters.fastInfo.bestFaceDetectMode ==
1237            ANDROID_STATS_FACE_DETECTION_OFF) {
1238        ALOGE("%s: Camera %d: Face detection not supported",
1239                __FUNCTION__, mCameraId);
1240        return INVALID_OPERATION;
1241    }
1242    if (l.mParameters.enableFaceDetect) return OK;
1243
1244    l.mParameters.enableFaceDetect = true;
1245
1246    res = updateRequests(l.mParameters);
1247
1248    return res;
1249}
1250
1251status_t Camera2Client::commandStopFaceDetectionL(Parameters &params) {
1252    status_t res = OK;
1253    ALOGV("%s: Camera %d: Stopping face detection",
1254          __FUNCTION__, mCameraId);
1255
1256    if (!params.enableFaceDetect) return OK;
1257
1258    params.enableFaceDetect = false;
1259
1260    if (params.state == Parameters::PREVIEW
1261            || params.state == Parameters::RECORD
1262            || params.state == Parameters::VIDEO_SNAPSHOT) {
1263        res = updateRequests(params);
1264    }
1265
1266    return res;
1267}
1268
1269status_t Camera2Client::commandEnableFocusMoveMsgL(bool enable) {
1270    SharedParameters::Lock l(mParameters);
1271    l.mParameters.enableFocusMoveMessages = enable;
1272
1273    return OK;
1274}
1275
1276status_t Camera2Client::commandPingL() {
1277    // Always ping back if access is proper and device is alive
1278    SharedParameters::Lock l(mParameters);
1279    if (l.mParameters.state != Parameters::DISCONNECTED) {
1280        return OK;
1281    } else {
1282        return NO_INIT;
1283    }
1284}
1285
1286status_t Camera2Client::commandSetVideoBufferCountL(size_t count) {
1287    if (recordingEnabledL()) {
1288        ALOGE("%s: Camera %d: Error setting video buffer count after "
1289                "recording was started", __FUNCTION__, mCameraId);
1290        return INVALID_OPERATION;
1291    }
1292
1293    // 32 is the current upper limit on the video buffer count for BufferQueue
1294    if (count > 32) {
1295        ALOGE("%s: Camera %d: Error setting %d as video buffer count value",
1296                __FUNCTION__, mCameraId, count);
1297        return BAD_VALUE;
1298    }
1299
1300    // Need to reallocate memory for heap
1301    if (mRecordingHeapCount != count) {
1302        if  (mRecordingHeap != 0) {
1303            mRecordingHeap.clear();
1304            mRecordingHeap = NULL;
1305        }
1306        mRecordingHeapCount = count;
1307    }
1308
1309    return OK;
1310}
1311
1312/** Device-related methods */
1313
1314void Camera2Client::notifyError(int errorCode, int arg1, int arg2) {
1315    ALOGE("Error condition %d reported by HAL, arguments %d, %d", errorCode, arg1, arg2);
1316}
1317
1318void Camera2Client::notifyShutter(int frameNumber, nsecs_t timestamp) {
1319    ALOGV("%s: Shutter notification for frame %d at time %lld", __FUNCTION__,
1320            frameNumber, timestamp);
1321}
1322
1323void Camera2Client::notifyAutoFocus(uint8_t newState, int triggerId) {
1324    ALOGV("%s: Autofocus state now %d, last trigger %d",
1325            __FUNCTION__, newState, triggerId);
1326    bool sendCompletedMessage = false;
1327    bool sendMovingMessage = false;
1328
1329    bool success = false;
1330    bool afInMotion = false;
1331    {
1332        SharedParameters::Lock l(mParameters);
1333        switch (l.mParameters.focusMode) {
1334            case Parameters::FOCUS_MODE_AUTO:
1335            case Parameters::FOCUS_MODE_MACRO:
1336                // Don't send notifications upstream if they're not for the current AF
1337                // trigger. For example, if cancel was called in between, or if we
1338                // already sent a notification about this AF call.
1339                if (triggerId != l.mParameters.currentAfTriggerId) break;
1340                switch (newState) {
1341                    case ANDROID_CONTROL_AF_STATE_FOCUSED_LOCKED:
1342                        success = true;
1343                        // no break
1344                    case ANDROID_CONTROL_AF_STATE_NOT_FOCUSED_LOCKED:
1345                        sendCompletedMessage = true;
1346                        l.mParameters.currentAfTriggerId = -1;
1347                        break;
1348                    case ANDROID_CONTROL_AF_STATE_ACTIVE_SCAN:
1349                        // Just starting focusing, ignore
1350                        break;
1351                    case ANDROID_CONTROL_AF_STATE_INACTIVE:
1352                    case ANDROID_CONTROL_AF_STATE_PASSIVE_SCAN:
1353                    case ANDROID_CONTROL_AF_STATE_PASSIVE_FOCUSED:
1354                    default:
1355                        // Unexpected in AUTO/MACRO mode
1356                        ALOGE("%s: Unexpected AF state transition in AUTO/MACRO mode: %d",
1357                                __FUNCTION__, newState);
1358                        break;
1359                }
1360                break;
1361            case Parameters::FOCUS_MODE_CONTINUOUS_VIDEO:
1362            case Parameters::FOCUS_MODE_CONTINUOUS_PICTURE:
1363                switch (newState) {
1364                    case ANDROID_CONTROL_AF_STATE_FOCUSED_LOCKED:
1365                        success = true;
1366                        // no break
1367                    case ANDROID_CONTROL_AF_STATE_NOT_FOCUSED_LOCKED:
1368                        // Don't send notifications upstream if they're not for
1369                        // the current AF trigger. For example, if cancel was
1370                        // called in between, or if we already sent a
1371                        // notification about this AF call.
1372                        // Send both a 'AF done' callback and a 'AF move' callback
1373                        if (triggerId != l.mParameters.currentAfTriggerId) break;
1374                        sendCompletedMessage = true;
1375                        afInMotion = false;
1376                        if (l.mParameters.enableFocusMoveMessages &&
1377                                l.mParameters.afInMotion) {
1378                            sendMovingMessage = true;
1379                        }
1380                        l.mParameters.currentAfTriggerId = -1;
1381                        break;
1382                    case ANDROID_CONTROL_AF_STATE_INACTIVE:
1383                        // Cancel was called, or we switched state; care if
1384                        // currently moving
1385                        afInMotion = false;
1386                        if (l.mParameters.enableFocusMoveMessages &&
1387                                l.mParameters.afInMotion) {
1388                            sendMovingMessage = true;
1389                        }
1390                        break;
1391                    case ANDROID_CONTROL_AF_STATE_PASSIVE_SCAN:
1392                        // Start passive scan, inform upstream
1393                        afInMotion = true;
1394                        // no break
1395                    case ANDROID_CONTROL_AF_STATE_PASSIVE_FOCUSED:
1396                        // Stop passive scan, inform upstream
1397                        if (l.mParameters.enableFocusMoveMessages) {
1398                            sendMovingMessage = true;
1399                        }
1400                        break;
1401                }
1402                l.mParameters.afInMotion = afInMotion;
1403                break;
1404            case Parameters::FOCUS_MODE_EDOF:
1405            case Parameters::FOCUS_MODE_INFINITY:
1406            case Parameters::FOCUS_MODE_FIXED:
1407            default:
1408                if (newState != ANDROID_CONTROL_AF_STATE_INACTIVE) {
1409                    ALOGE("%s: Unexpected AF state change %d "
1410                            "(ID %d) in focus mode %d",
1411                          __FUNCTION__, newState, triggerId,
1412                            l.mParameters.focusMode);
1413                }
1414        }
1415    }
1416    if (sendMovingMessage) {
1417        SharedCameraClient::Lock l(mSharedCameraClient);
1418        if (l.mCameraClient != 0) {
1419            l.mCameraClient->notifyCallback(CAMERA_MSG_FOCUS_MOVE,
1420                    afInMotion ? 1 : 0, 0);
1421        }
1422    }
1423    if (sendCompletedMessage) {
1424        SharedCameraClient::Lock l(mSharedCameraClient);
1425        if (l.mCameraClient != 0) {
1426            l.mCameraClient->notifyCallback(CAMERA_MSG_FOCUS,
1427                    success ? 1 : 0, 0);
1428        }
1429    }
1430}
1431
1432void Camera2Client::notifyAutoExposure(uint8_t newState, int triggerId) {
1433    ALOGV("%s: Autoexposure state now %d, last trigger %d",
1434            __FUNCTION__, newState, triggerId);
1435    mCaptureSequencer->notifyAutoExposure(newState, triggerId);
1436}
1437
1438void Camera2Client::notifyAutoWhitebalance(uint8_t newState, int triggerId) {
1439    ALOGV("%s: Auto-whitebalance state now %d, last trigger %d",
1440            __FUNCTION__, newState, triggerId);
1441}
1442
1443int Camera2Client::getCameraId() const {
1444    return mCameraId;
1445}
1446
1447const sp<Camera2Device>& Camera2Client::getCameraDevice() {
1448    return mDevice;
1449}
1450
1451camera2::SharedParameters& Camera2Client::getParameters() {
1452    return mParameters;
1453}
1454
1455int Camera2Client::getPreviewStreamId() const {
1456    return mPreviewStreamId;
1457}
1458
1459int Camera2Client::getCaptureStreamId() const {
1460    return mJpegProcessor->getStreamId();
1461}
1462
1463int Camera2Client::getCallbackStreamId() const {
1464    return mCallbackProcessor->getStreamId();
1465}
1466
1467int Camera2Client::getRecordingStreamId() const {
1468    return mRecordingStreamId;
1469}
1470
1471int Camera2Client::getZslStreamId() const {
1472    return mZslProcessor->getStreamId();
1473}
1474
1475status_t Camera2Client::registerFrameListener(int32_t id,
1476        wp<camera2::FrameProcessor::FilteredListener> listener) {
1477    return mFrameProcessor->registerListener(id, listener);
1478}
1479
1480status_t Camera2Client::removeFrameListener(int32_t id) {
1481    return mFrameProcessor->removeListener(id);
1482}
1483
1484Camera2Client::SharedCameraClient::Lock::Lock(SharedCameraClient &client):
1485        mCameraClient(client.mCameraClient),
1486        mSharedClient(client) {
1487    mSharedClient.mCameraClientLock.lock();
1488}
1489
1490Camera2Client::SharedCameraClient::Lock::~Lock() {
1491    mSharedClient.mCameraClientLock.unlock();
1492}
1493
1494Camera2Client::SharedCameraClient::SharedCameraClient(const sp<ICameraClient>&client):
1495        mCameraClient(client) {
1496}
1497
1498Camera2Client::SharedCameraClient& Camera2Client::SharedCameraClient::operator=(
1499        const sp<ICameraClient>&client) {
1500    Mutex::Autolock l(mCameraClientLock);
1501    mCameraClient = client;
1502    return *this;
1503}
1504
1505void Camera2Client::SharedCameraClient::clear() {
1506    Mutex::Autolock l(mCameraClientLock);
1507    mCameraClient.clear();
1508}
1509
1510const int32_t Camera2Client::kPreviewRequestId;
1511const int32_t Camera2Client::kRecordRequestId;
1512const int32_t Camera2Client::kFirstCaptureRequestId;
1513
1514void Camera2Client::onRecordingFrameAvailable() {
1515    ATRACE_CALL();
1516    status_t res;
1517    sp<Camera2Heap> recordingHeap;
1518    size_t heapIdx = 0;
1519    nsecs_t timestamp;
1520    {
1521        SharedParameters::Lock l(mParameters);
1522
1523        BufferItemConsumer::BufferItem imgBuffer;
1524        res = mRecordingConsumer->acquireBuffer(&imgBuffer);
1525        if (res != OK) {
1526            ALOGE("%s: Camera %d: Error receiving recording buffer: %s (%d)",
1527                    __FUNCTION__, mCameraId, strerror(-res), res);
1528            return;
1529        }
1530        timestamp = imgBuffer.mTimestamp;
1531
1532        mRecordingFrameCount++;
1533        ALOGV("OnRecordingFrame: Frame %d", mRecordingFrameCount);
1534
1535        // TODO: Signal errors here upstream
1536        if (l.mParameters.state != Parameters::RECORD &&
1537                l.mParameters.state != Parameters::VIDEO_SNAPSHOT) {
1538            ALOGV("%s: Camera %d: Discarding recording image buffers received after "
1539                    "recording done",
1540                    __FUNCTION__, mCameraId);
1541            mRecordingConsumer->releaseBuffer(imgBuffer);
1542            return;
1543        }
1544
1545        if (mRecordingHeap == 0) {
1546            const size_t bufferSize = 4 + sizeof(buffer_handle_t);
1547            ALOGV("%s: Camera %d: Creating recording heap with %d buffers of "
1548                    "size %d bytes", __FUNCTION__, mCameraId,
1549                    mRecordingHeapCount, bufferSize);
1550
1551            mRecordingHeap = new Camera2Heap(bufferSize, mRecordingHeapCount,
1552                    "Camera2Client::RecordingHeap");
1553            if (mRecordingHeap->mHeap->getSize() == 0) {
1554                ALOGE("%s: Camera %d: Unable to allocate memory for recording",
1555                        __FUNCTION__, mCameraId);
1556                mRecordingConsumer->releaseBuffer(imgBuffer);
1557                return;
1558            }
1559            for (size_t i = 0; i < mRecordingBuffers.size(); i++) {
1560                if (mRecordingBuffers[i].mBuf !=
1561                        BufferItemConsumer::INVALID_BUFFER_SLOT) {
1562                    ALOGE("%s: Camera %d: Non-empty recording buffers list!",
1563                            __FUNCTION__, mCameraId);
1564                }
1565            }
1566            mRecordingBuffers.clear();
1567            mRecordingBuffers.setCapacity(mRecordingHeapCount);
1568            mRecordingBuffers.insertAt(0, mRecordingHeapCount);
1569
1570            mRecordingHeapHead = 0;
1571            mRecordingHeapFree = mRecordingHeapCount;
1572        }
1573
1574        if ( mRecordingHeapFree == 0) {
1575            ALOGE("%s: Camera %d: No free recording buffers, dropping frame",
1576                    __FUNCTION__, mCameraId);
1577            mRecordingConsumer->releaseBuffer(imgBuffer);
1578            return;
1579        }
1580
1581        heapIdx = mRecordingHeapHead;
1582        mRecordingHeapHead = (mRecordingHeapHead + 1) % mRecordingHeapCount;
1583        mRecordingHeapFree--;
1584
1585        ALOGV("%s: Camera %d: Timestamp %lld",
1586                __FUNCTION__, mCameraId, timestamp);
1587
1588        ssize_t offset;
1589        size_t size;
1590        sp<IMemoryHeap> heap =
1591                mRecordingHeap->mBuffers[heapIdx]->getMemory(&offset,
1592                        &size);
1593
1594        uint8_t *data = (uint8_t*)heap->getBase() + offset;
1595        uint32_t type = kMetadataBufferTypeGrallocSource;
1596        *((uint32_t*)data) = type;
1597        *((buffer_handle_t*)(data + 4)) = imgBuffer.mGraphicBuffer->handle;
1598        ALOGV("%s: Camera %d: Sending out buffer_handle_t %p",
1599                __FUNCTION__, mCameraId, imgBuffer.mGraphicBuffer->handle);
1600        mRecordingBuffers.replaceAt(imgBuffer, heapIdx);
1601        recordingHeap = mRecordingHeap;
1602    }
1603
1604    // Call outside locked parameters to allow re-entrancy from notification
1605    SharedCameraClient::Lock l(mSharedCameraClient);
1606    if (l.mCameraClient != 0) {
1607        l.mCameraClient->dataCallbackTimestamp(timestamp,
1608                CAMERA_MSG_VIDEO_FRAME,
1609                recordingHeap->mBuffers[heapIdx]);
1610    }
1611}
1612
1613/** Utility methods */
1614
1615status_t Camera2Client::updateRequests(const Parameters &params) {
1616    status_t res;
1617
1618    res = updatePreviewRequest(params);
1619    if (res != OK) {
1620        ALOGE("%s: Camera %d: Unable to update preview request: %s (%d)",
1621                __FUNCTION__, mCameraId, strerror(-res), res);
1622        return res;
1623    }
1624    res = updateRecordingRequest(params);
1625    if (res != OK) {
1626        ALOGE("%s: Camera %d: Unable to update recording request: %s (%d)",
1627                __FUNCTION__, mCameraId, strerror(-res), res);
1628        return res;
1629    }
1630
1631    if (params.state == Parameters::PREVIEW) {
1632        res = mDevice->setStreamingRequest(mPreviewRequest);
1633        if (res != OK) {
1634            ALOGE("%s: Camera %d: Error streaming new preview request: %s (%d)",
1635                    __FUNCTION__, mCameraId, strerror(-res), res);
1636            return res;
1637        }
1638    } else if (params.state == Parameters::RECORD ||
1639            params.state == Parameters::VIDEO_SNAPSHOT) {
1640        res = mDevice->setStreamingRequest(mRecordingRequest);
1641        if (res != OK) {
1642            ALOGE("%s: Camera %d: Error streaming new record request: %s (%d)",
1643                    __FUNCTION__, mCameraId, strerror(-res), res);
1644            return res;
1645        }
1646    }
1647    return res;
1648}
1649
1650status_t Camera2Client::updatePreviewStream(const Parameters &params) {
1651    ATRACE_CALL();
1652    status_t res;
1653
1654    if (mPreviewStreamId != NO_STREAM) {
1655        // Check if stream parameters have to change
1656        uint32_t currentWidth, currentHeight;
1657        res = mDevice->getStreamInfo(mPreviewStreamId,
1658                &currentWidth, &currentHeight, 0);
1659        if (res != OK) {
1660            ALOGE("%s: Camera %d: Error querying preview stream info: "
1661                    "%s (%d)", __FUNCTION__, mCameraId, strerror(-res), res);
1662            return res;
1663        }
1664        if (currentWidth != (uint32_t)params.previewWidth ||
1665                currentHeight != (uint32_t)params.previewHeight) {
1666            ALOGV("%s: Camera %d: Preview size switch: %d x %d -> %d x %d",
1667                    __FUNCTION__, mCameraId, currentWidth, currentHeight,
1668                    params.previewWidth, params.previewHeight);
1669            res = mDevice->waitUntilDrained();
1670            if (res != OK) {
1671                ALOGE("%s: Camera %d: Error waiting for preview to drain: "
1672                        "%s (%d)", __FUNCTION__, mCameraId, strerror(-res), res);
1673                return res;
1674            }
1675            res = mDevice->deleteStream(mPreviewStreamId);
1676            if (res != OK) {
1677                ALOGE("%s: Camera %d: Unable to delete old output stream "
1678                        "for preview: %s (%d)", __FUNCTION__, mCameraId,
1679                        strerror(-res), res);
1680                return res;
1681            }
1682            mPreviewStreamId = NO_STREAM;
1683        }
1684    }
1685
1686    if (mPreviewStreamId == NO_STREAM) {
1687        res = mDevice->createStream(mPreviewWindow,
1688                params.previewWidth, params.previewHeight,
1689                CAMERA2_HAL_PIXEL_FORMAT_OPAQUE, 0,
1690                &mPreviewStreamId);
1691        if (res != OK) {
1692            ALOGE("%s: Camera %d: Unable to create preview stream: %s (%d)",
1693                    __FUNCTION__, mCameraId, strerror(-res), res);
1694            return res;
1695        }
1696    }
1697
1698    res = mDevice->setStreamTransform(mPreviewStreamId,
1699            params.previewTransform);
1700    if (res != OK) {
1701        ALOGE("%s: Camera %d: Unable to set preview stream transform: "
1702                "%s (%d)", __FUNCTION__, mCameraId, strerror(-res), res);
1703        return res;
1704    }
1705
1706    return OK;
1707}
1708
1709status_t Camera2Client::updatePreviewRequest(const Parameters &params) {
1710    ATRACE_CALL();
1711    status_t res;
1712    if (mPreviewRequest.entryCount() == 0) {
1713        res = mDevice->createDefaultRequest(CAMERA2_TEMPLATE_PREVIEW,
1714                &mPreviewRequest);
1715        if (res != OK) {
1716            ALOGE("%s: Camera %d: Unable to create default preview request: "
1717                    "%s (%d)", __FUNCTION__, mCameraId, strerror(-res), res);
1718            return res;
1719        }
1720    }
1721
1722    res = params.updateRequest(&mPreviewRequest);
1723    if (res != OK) {
1724        ALOGE("%s: Camera %d: Unable to update common entries of preview "
1725                "request: %s (%d)", __FUNCTION__, mCameraId,
1726                strerror(-res), res);
1727        return res;
1728    }
1729
1730    res = mPreviewRequest.update(ANDROID_REQUEST_ID,
1731            &kPreviewRequestId, 1);
1732
1733    return OK;
1734}
1735
1736status_t Camera2Client::updateRecordingRequest(const Parameters &params) {
1737    ATRACE_CALL();
1738    status_t res;
1739    if (mRecordingRequest.entryCount() == 0) {
1740        res = mDevice->createDefaultRequest(CAMERA2_TEMPLATE_VIDEO_RECORD,
1741                &mRecordingRequest);
1742        if (res != OK) {
1743            ALOGE("%s: Camera %d: Unable to create default recording request:"
1744                    " %s (%d)", __FUNCTION__, mCameraId, strerror(-res), res);
1745            return res;
1746        }
1747    }
1748
1749    res = params.updateRequest(&mRecordingRequest);
1750    if (res != OK) {
1751        ALOGE("%s: Camera %d: Unable to update common entries of recording "
1752                "request: %s (%d)", __FUNCTION__, mCameraId,
1753                strerror(-res), res);
1754        return res;
1755    }
1756
1757    return OK;
1758}
1759
1760status_t Camera2Client::updateRecordingStream(const Parameters &params) {
1761    status_t res;
1762
1763    if (mRecordingConsumer == 0) {
1764        // Create CPU buffer queue endpoint. We need one more buffer here so that we can
1765        // always acquire and free a buffer when the heap is full; otherwise the consumer
1766        // will have buffers in flight we'll never clear out.
1767        mRecordingConsumer = new BufferItemConsumer(
1768                GRALLOC_USAGE_HW_VIDEO_ENCODER,
1769                mRecordingHeapCount + 1,
1770                true);
1771        mRecordingConsumer->setFrameAvailableListener(new RecordingWaiter(this));
1772        mRecordingConsumer->setName(String8("Camera2Client::RecordingConsumer"));
1773        mRecordingWindow = new SurfaceTextureClient(
1774            mRecordingConsumer->getProducerInterface());
1775        // Allocate memory later, since we don't know buffer size until receipt
1776    }
1777
1778    if (mRecordingStreamId != NO_STREAM) {
1779        // Check if stream parameters have to change
1780        uint32_t currentWidth, currentHeight;
1781        res = mDevice->getStreamInfo(mRecordingStreamId,
1782                &currentWidth, &currentHeight, 0);
1783        if (res != OK) {
1784            ALOGE("%s: Camera %d: Error querying recording output stream info: "
1785                    "%s (%d)", __FUNCTION__, mCameraId, strerror(-res), res);
1786            return res;
1787        }
1788        if (currentWidth != (uint32_t)params.videoWidth ||
1789                currentHeight != (uint32_t)params.videoHeight) {
1790            // TODO: Should wait to be sure previous recording has finished
1791            res = mDevice->deleteStream(mRecordingStreamId);
1792            if (res != OK) {
1793                ALOGE("%s: Camera %d: Unable to delete old output stream "
1794                        "for recording: %s (%d)", __FUNCTION__, mCameraId,
1795                        strerror(-res), res);
1796                return res;
1797            }
1798            mRecordingStreamId = NO_STREAM;
1799        }
1800    }
1801
1802    if (mRecordingStreamId == NO_STREAM) {
1803        mRecordingFrameCount = 0;
1804        res = mDevice->createStream(mRecordingWindow,
1805                params.videoWidth, params.videoHeight,
1806                CAMERA2_HAL_PIXEL_FORMAT_OPAQUE, 0, &mRecordingStreamId);
1807        if (res != OK) {
1808            ALOGE("%s: Camera %d: Can't create output stream for recording: "
1809                    "%s (%d)", __FUNCTION__, mCameraId, strerror(-res), res);
1810            return res;
1811        }
1812    }
1813
1814    return OK;
1815}
1816
1817size_t Camera2Client::calculateBufferSize(int width, int height,
1818        int format, int stride) {
1819    switch (format) {
1820        case HAL_PIXEL_FORMAT_YCbCr_422_SP: // NV16
1821            return width * height * 2;
1822        case HAL_PIXEL_FORMAT_YCrCb_420_SP: // NV21
1823            return width * height * 3 / 2;
1824        case HAL_PIXEL_FORMAT_YCbCr_422_I: // YUY2
1825            return width * height * 2;
1826        case HAL_PIXEL_FORMAT_YV12: {      // YV12
1827            size_t ySize = stride * height;
1828            size_t uvStride = (stride / 2 + 0xF) & ~0xF;
1829            size_t uvSize = uvStride * height / 2;
1830            return ySize + uvSize * 2;
1831        }
1832        case HAL_PIXEL_FORMAT_RGB_565:
1833            return width * height * 2;
1834        case HAL_PIXEL_FORMAT_RGBA_8888:
1835            return width * height * 4;
1836        case HAL_PIXEL_FORMAT_RAW_SENSOR:
1837            return width * height * 2;
1838        default:
1839            ALOGE("%s: Unknown preview format: %x",
1840                    __FUNCTION__,  format);
1841            return 0;
1842    }
1843}
1844
1845} // namespace android
1846