CameraHal.h revision bb0a9edbe9d4072ed227550d898f0c2d0149e0ba 
1/*
2 * Copyright (C) Texas Instruments - http://www.ti.com/
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
18
19#ifndef ANDROID_HARDWARE_CAMERA_HARDWARE_H
20#define ANDROID_HARDWARE_CAMERA_HARDWARE_H
21
22#include <stdio.h>
23#include <stdarg.h>
24#include <stdlib.h>
25#include <string.h>
26#include <unistd.h>
27#include <time.h>
28#include <fcntl.h>
29#include <sys/ioctl.h>
30#include <sys/mman.h>
31#include <sys/stat.h>
32#include <utils/Log.h>
33#include <utils/threads.h>
34#include <linux/videodev2.h>
35#include "binder/MemoryBase.h"
36#include "binder/MemoryHeapBase.h"
37#include <utils/threads.h>
38#include <camera/CameraParameters.h>
39#include <hardware/camera.h>
40#include "MessageQueue.h"
41#include "Semaphore.h"
42#include "CameraProperties.h"
43#include "DebugUtils.h"
44#include "SensorListener.h"
45
46#include <ui/GraphicBufferAllocator.h>
47#include <ui/GraphicBuffer.h>
48
49#define MIN_WIDTH           640
50#define MIN_HEIGHT          480
51#define PICTURE_WIDTH   3264 /* 5mp - 2560. 8mp - 3280 */ /* Make sure it is a multiple of 16. */
52#define PICTURE_HEIGHT  2448 /* 5mp - 2048. 8mp - 2464 */ /* Make sure it is a multiple of 16. */
53#define PREVIEW_WIDTH 176
54#define PREVIEW_HEIGHT 144
55#define PIXEL_FORMAT           V4L2_PIX_FMT_UYVY
56
57#define VIDEO_FRAME_COUNT_MAX    8 //NUM_OVERLAY_BUFFERS_REQUESTED
58#define MAX_CAMERA_BUFFERS    8 //NUM_OVERLAY_BUFFERS_REQUESTED
59#define MAX_ZOOM        3
60#define THUMB_WIDTH     80
61#define THUMB_HEIGHT    60
62#define PIX_YUV422I 0
63#define PIX_YUV420P 1
64
65#define SATURATION_OFFSET 100
66#define SHARPNESS_OFFSET 100
67#define CONTRAST_OFFSET 100
68
69#define CAMHAL_GRALLOC_USAGE GRALLOC_USAGE_HW_TEXTURE | \
70                             GRALLOC_USAGE_HW_RENDER | \
71                             GRALLOC_USAGE_SW_READ_RARELY | \
72                             GRALLOC_USAGE_SW_WRITE_NEVER
73
74//Enables Absolute PPM measurements in logcat
75#define PPM_INSTRUMENTATION_ABS 1
76
77#define LOCK_BUFFER_TRIES 5
78#define HAL_PIXEL_FORMAT_NV12 0x100
79
80#define CAMHAL_LOGI ALOGI
81
82//Uncomment to enable more verbose/debug logs
83//#define DEBUG_LOG
84
85///Camera HAL Logging Functions
86#ifndef DEBUG_LOG
87
88#define CAMHAL_LOGDA(str)
89#define CAMHAL_LOGDB(str, ...)
90#define CAMHAL_LOGVA(str)
91#define CAMHAL_LOGVB(str, ...)
92
93#define CAMHAL_LOGEA LOGE
94#define CAMHAL_LOGEB LOGE
95
96#undef LOG_FUNCTION_NAME
97#undef LOG_FUNCTION_NAME_EXIT
98#define LOG_FUNCTION_NAME
99#define LOG_FUNCTION_NAME_EXIT
100
101#else
102
103#define CAMHAL_LOGDA DBGUTILS_LOGDA
104#define CAMHAL_LOGDB DBGUTILS_LOGDB
105#define CAMHAL_LOGVA DBGUTILS_LOGVA
106#define CAMHAL_LOGVB DBGUTILS_LOGVB
107
108#define CAMHAL_LOGEA DBGUTILS_LOGEA
109#define CAMHAL_LOGEB DBGUTILS_LOGEB
110
111#endif
112
113
114
115#define NONNEG_ASSIGN(x,y) \
116    if(x > -1) \
117        y = x
118
119namespace android {
120
121#define PARAM_BUFFER            6000
122
123///Forward declarations
124class CameraHal;
125class CameraFrame;
126class CameraHalEvent;
127class DisplayFrame;
128
129class CameraArea : public RefBase
130{
131public:
132
133    CameraArea(ssize_t top,
134               ssize_t left,
135               ssize_t bottom,
136               ssize_t right,
137               size_t weight) : mTop(top),
138                                mLeft(left),
139                                mBottom(bottom),
140                                mRight(right),
141                                mWeight(weight) {}
142
143    status_t transfrom(size_t width,
144                       size_t height,
145                       size_t &top,
146                       size_t &left,
147                       size_t &areaWidth,
148                       size_t &areaHeight);
149
150    bool isValid()
151        {
152        return ( ( 0 != mTop ) || ( 0 != mLeft ) || ( 0 != mBottom ) || ( 0 != mRight) );
153        }
154
155    bool isZeroArea()
156    {
157        return  ( (0 == mTop ) && ( 0 == mLeft ) && ( 0 == mBottom )
158                 && ( 0 == mRight ) && ( 0 == mWeight ));
159    }
160
161    size_t getWeight()
162        {
163        return mWeight;
164        }
165
166    bool compare(const sp<CameraArea> &area);
167
168    static status_t parseAreas(const char *area,
169                               size_t areaLength,
170                               Vector< sp<CameraArea> > &areas);
171
172    static status_t checkArea(ssize_t top,
173                              ssize_t left,
174                              ssize_t bottom,
175                              ssize_t right,
176                              ssize_t weight);
177
178    static bool areAreasDifferent(Vector< sp<CameraArea> > &, Vector< sp<CameraArea> > &);
179
180protected:
181    static const ssize_t TOP = -1000;
182    static const ssize_t LEFT = -1000;
183    static const ssize_t BOTTOM = 1000;
184    static const ssize_t RIGHT = 1000;
185    static const ssize_t WEIGHT_MIN = 1;
186    static const ssize_t WEIGHT_MAX = 1000;
187
188    ssize_t mTop;
189    ssize_t mLeft;
190    ssize_t mBottom;
191    ssize_t mRight;
192    size_t mWeight;
193};
194
195class CameraFDResult : public RefBase
196{
197public:
198
199    CameraFDResult() : mFaceData(NULL) {};
200    CameraFDResult(camera_frame_metadata_t *faces) : mFaceData(faces) {};
201
202    virtual ~CameraFDResult() {
203        if ( ( NULL != mFaceData ) && ( NULL != mFaceData->faces ) ) {
204            free(mFaceData->faces);
205            free(mFaceData);
206            mFaceData=NULL;
207        }
208
209        if(( NULL != mFaceData ))
210            {
211            free(mFaceData);
212            mFaceData = NULL;
213            }
214    }
215
216    camera_frame_metadata_t *getFaceResult() { return mFaceData; };
217
218    static const ssize_t TOP = -1000;
219    static const ssize_t LEFT = -1000;
220    static const ssize_t BOTTOM = 1000;
221    static const ssize_t RIGHT = 1000;
222    static const ssize_t INVALID_DATA = -2000;
223
224private:
225
226    camera_frame_metadata_t *mFaceData;
227};
228
229class CameraFrame
230{
231    public:
232
233    enum FrameType
234        {
235            PREVIEW_FRAME_SYNC = 0x1, ///SYNC implies that the frame needs to be explicitly returned after consuming in order to be filled by camera again
236            PREVIEW_FRAME = 0x2   , ///Preview frame includes viewfinder and snapshot frames
237            IMAGE_FRAME_SYNC = 0x4, ///Image Frame is the image capture output frame
238            IMAGE_FRAME = 0x8,
239            VIDEO_FRAME_SYNC = 0x10, ///Timestamp will be updated for these frames
240            VIDEO_FRAME = 0x20,
241            FRAME_DATA_SYNC = 0x40, ///Any extra data assosicated with the frame. Always synced with the frame
242            FRAME_DATA= 0x80,
243            RAW_FRAME = 0x100,
244            SNAPSHOT_FRAME = 0x200,
245            ALL_FRAMES = 0xFFFF   ///Maximum of 16 frame types supported
246        };
247
248    enum FrameQuirks
249    {
250        ENCODE_RAW_YUV422I_TO_JPEG = 0x1 << 0,
251        HAS_EXIF_DATA = 0x1 << 1,
252    };
253
254    //default contrustor
255    CameraFrame():
256    mCookie(NULL),
257    mCookie2(NULL),
258    mBuffer(NULL),
259    mFrameType(0),
260    mTimestamp(0),
261    mWidth(0),
262    mHeight(0),
263    mOffset(0),
264    mAlignment(0),
265    mFd(0),
266    mLength(0),
267    mFrameMask(0),
268    mQuirks(0) {
269
270      mYuv[0] = NULL;
271      mYuv[1] = NULL;
272    }
273
274    //copy constructor
275    CameraFrame(const CameraFrame &frame) :
276    mCookie(frame.mCookie),
277    mCookie2(frame.mCookie2),
278    mBuffer(frame.mBuffer),
279    mFrameType(frame.mFrameType),
280    mTimestamp(frame.mTimestamp),
281    mWidth(frame.mWidth),
282    mHeight(frame.mHeight),
283    mOffset(frame.mOffset),
284    mAlignment(frame.mAlignment),
285    mFd(frame.mFd),
286    mLength(frame.mLength),
287    mFrameMask(frame.mFrameMask),
288    mQuirks(frame.mQuirks) {
289
290      mYuv[0] = frame.mYuv[0];
291      mYuv[1] = frame.mYuv[1];
292    }
293
294    void *mCookie;
295    void *mCookie2;
296    void *mBuffer;
297    int mFrameType;
298    nsecs_t mTimestamp;
299    unsigned int mWidth, mHeight;
300    uint32_t mOffset;
301    unsigned int mAlignment;
302    int mFd;
303    size_t mLength;
304    unsigned mFrameMask;
305    unsigned int mQuirks;
306    unsigned int mYuv[2];
307    ///@todo add other member vars like  stride etc
308};
309
310enum CameraHalError
311{
312    CAMERA_ERROR_FATAL = 0x1, //Fatal errors can only be recovered by restarting media server
313    CAMERA_ERROR_HARD = 0x2,  // Hard errors are hardware hangs that may be recoverable by resetting the hardware internally within the adapter
314    CAMERA_ERROR_SOFT = 0x4, // Soft errors are non fatal errors that can be recovered from without needing to stop use-case
315};
316
317///Common Camera Hal Event class which is visible to CameraAdapter,DisplayAdapter and AppCallbackNotifier
318///@todo Rename this class to CameraEvent
319class CameraHalEvent
320{
321public:
322    //Enums
323    enum CameraHalEventType {
324        NO_EVENTS = 0x0,
325        EVENT_FOCUS_LOCKED = 0x1,
326        EVENT_FOCUS_ERROR = 0x2,
327        EVENT_ZOOM_INDEX_REACHED = 0x4,
328        EVENT_SHUTTER = 0x8,
329        EVENT_FACE = 0x10,
330        ///@remarks Future enum related to display, like frame displayed event, could be added here
331        ALL_EVENTS = 0xFFFF ///Maximum of 16 event types supported
332    };
333
334    ///Class declarations
335    ///@remarks Add a new class for a new event type added above
336
337    //Shutter event specific data
338    typedef struct ShutterEventData_t {
339        bool shutterClosed;
340    }ShutterEventData;
341
342    ///Focus event specific data
343    typedef struct FocusEventData_t {
344        bool focusLocked;
345        bool focusError;
346        int currentFocusValue;
347    } FocusEventData;
348
349    ///Zoom specific event data
350    typedef struct ZoomEventData_t {
351        int currentZoomIndex;
352        bool targetZoomIndexReached;
353    } ZoomEventData;
354
355    typedef struct FaceData_t {
356        ssize_t top;
357        ssize_t left;
358        ssize_t bottom;
359        ssize_t right;
360        size_t score;
361    } FaceData;
362
363    typedef sp<CameraFDResult> FaceEventData;
364
365    class CameraHalEventData : public RefBase{
366
367    public:
368
369        CameraHalEvent::FocusEventData focusEvent;
370        CameraHalEvent::ZoomEventData zoomEvent;
371        CameraHalEvent::ShutterEventData shutterEvent;
372        CameraHalEvent::FaceEventData faceEvent;
373    };
374
375    //default contrustor
376    CameraHalEvent():
377    mCookie(NULL),
378    mEventType(NO_EVENTS) {}
379
380    //copy constructor
381    CameraHalEvent(const CameraHalEvent &event) :
382        mCookie(event.mCookie),
383        mEventType(event.mEventType),
384        mEventData(event.mEventData) {};
385
386    void* mCookie;
387    CameraHalEventType mEventType;
388    sp<CameraHalEventData> mEventData;
389
390};
391
392///      Have a generic callback class based on template - to adapt CameraFrame and Event
393typedef void (*frame_callback) (CameraFrame *cameraFrame);
394typedef void (*event_callback) (CameraHalEvent *event);
395
396//signals CameraHAL to relase image buffers
397typedef void (*release_image_buffers_callback) (void *userData);
398typedef void (*end_image_capture_callback) (void *userData);
399
400/**
401  * Interface class implemented by classes that have some events to communicate to dependendent classes
402  * Dependent classes use this interface for registering for events
403  */
404class MessageNotifier
405{
406public:
407    static const uint32_t EVENT_BIT_FIELD_POSITION;
408    static const uint32_t FRAME_BIT_FIELD_POSITION;
409
410    ///@remarks Msg type comes from CameraFrame and CameraHalEvent classes
411    ///           MSB 16 bits is for events and LSB 16 bits is for frame notifications
412    ///         FrameProvider and EventProvider classes act as helpers to event/frame
413    ///         consumers to call this api
414    virtual void enableMsgType(int32_t msgs, frame_callback frameCb=NULL, event_callback eventCb=NULL, void* cookie=NULL) = 0;
415    virtual void disableMsgType(int32_t msgs, void* cookie) = 0;
416
417    virtual ~MessageNotifier() {};
418};
419
420class ErrorNotifier : public virtual RefBase
421{
422public:
423    virtual void errorNotify(int error) = 0;
424
425    virtual ~ErrorNotifier() {};
426};
427
428
429/**
430  * Interace class abstraction for Camera Adapter to act as a frame provider
431  * This interface is fully implemented by Camera Adapter
432  */
433class FrameNotifier : public MessageNotifier
434{
435public:
436    virtual void returnFrame(void* frameBuf, CameraFrame::FrameType frameType) = 0;
437    virtual void addFramePointers(void *frameBuf, void *buf) = 0;
438    virtual void removeFramePointers() = 0;
439
440    virtual ~FrameNotifier() {};
441};
442
443/**   * Wrapper class around Frame Notifier, which is used by display and notification classes for interacting with Camera Adapter
444  */
445class FrameProvider
446{
447    FrameNotifier* mFrameNotifier;
448    void* mCookie;
449    frame_callback mFrameCallback;
450
451public:
452    FrameProvider(FrameNotifier *fn, void* cookie, frame_callback frameCallback)
453        :mFrameNotifier(fn), mCookie(cookie),mFrameCallback(frameCallback) { }
454
455    int enableFrameNotification(int32_t frameTypes);
456    int disableFrameNotification(int32_t frameTypes);
457    int returnFrame(void *frameBuf, CameraFrame::FrameType frameType);
458    void addFramePointers(void *frameBuf, void *buf);
459    void removeFramePointers();
460};
461
462/** Wrapper class around MessageNotifier, which is used by display and notification classes for interacting with
463   *  Camera Adapter
464  */
465class EventProvider
466{
467public:
468    MessageNotifier* mEventNotifier;
469    void* mCookie;
470    event_callback mEventCallback;
471
472public:
473    EventProvider(MessageNotifier *mn, void* cookie, event_callback eventCallback)
474        :mEventNotifier(mn), mCookie(cookie), mEventCallback(eventCallback) {}
475
476    int enableEventNotification(int32_t eventTypes);
477    int disableEventNotification(int32_t eventTypes);
478};
479
480/*
481  * Interface for providing buffers
482  */
483class BufferProvider
484{
485public:
486    virtual void* allocateBuffer(int width, int height, const char* format, int &bytes, int numBufs) = 0;
487
488    //additional methods used for memory mapping
489    virtual uint32_t * getOffsets() = 0;
490    virtual int getFd() = 0;
491
492    virtual int freeBuffer(void* buf) = 0;
493
494    virtual ~BufferProvider() {}
495};
496
497/**
498  * Class for handling data and notify callbacks to application
499  */
500class   AppCallbackNotifier: public ErrorNotifier , public virtual RefBase
501{
502
503public:
504
505    ///Constants
506    static const int NOTIFIER_TIMEOUT;
507    static const int32_t MAX_BUFFERS = 8;
508
509    enum NotifierCommands
510        {
511        NOTIFIER_CMD_PROCESS_EVENT,
512        NOTIFIER_CMD_PROCESS_FRAME,
513        NOTIFIER_CMD_PROCESS_ERROR
514        };
515
516    enum NotifierState
517        {
518        NOTIFIER_STOPPED,
519        NOTIFIER_STARTED,
520        NOTIFIER_EXITED
521        };
522
523public:
524
525    ~AppCallbackNotifier();
526
527    ///Initialzes the callback notifier, creates any resources required
528    status_t initialize();
529
530    ///Starts the callbacks to application
531    status_t start();
532
533    ///Stops the callbacks from going to application
534    status_t stop();
535
536    void setEventProvider(int32_t eventMask, MessageNotifier * eventProvider);
537    void setFrameProvider(FrameNotifier *frameProvider);
538
539    //All sub-components of Camera HAL call this whenever any error happens
540    virtual void errorNotify(int error);
541
542    status_t startPreviewCallbacks(CameraParameters &params, void *buffers, uint32_t *offsets, int fd, size_t length, size_t count);
543    status_t stopPreviewCallbacks();
544
545    status_t enableMsgType(int32_t msgType);
546    status_t disableMsgType(int32_t msgType);
547
548    //API for enabling/disabling measurement data
549    void setMeasurements(bool enable);
550
551    //thread loops
552    bool notificationThread();
553
554    ///Notification callback functions
555    static void frameCallbackRelay(CameraFrame* caFrame);
556    static void eventCallbackRelay(CameraHalEvent* chEvt);
557    void frameCallback(CameraFrame* caFrame);
558    void eventCallback(CameraHalEvent* chEvt);
559    void flushAndReturnFrames();
560
561    void setCallbacks(CameraHal *cameraHal,
562                        camera_notify_callback notify_cb,
563                        camera_data_callback data_cb,
564                        camera_data_timestamp_callback data_cb_timestamp,
565                        camera_request_memory get_memory,
566                        void *user);
567
568    //Set Burst mode
569    void setBurst(bool burst);
570
571    //Notifications from CameraHal for video recording case
572    status_t startRecording();
573    status_t stopRecording();
574    status_t initSharedVideoBuffers(void *buffers, uint32_t *offsets, int fd, size_t length, size_t count, void *vidBufs);
575    status_t releaseRecordingFrame(const void *opaque);
576
577	status_t useMetaDataBufferMode(bool enable);
578
579    void EncoderDoneCb(void*, void*, CameraFrame::FrameType type, void* cookie1, void* cookie2);
580
581    void useVideoBuffers(bool useVideoBuffers);
582
583    bool getUesVideoBuffers();
584    void setVideoRes(int width, int height);
585
586    void flushEventQueue();
587
588    //Internal class definitions
589    class NotificationThread : public Thread {
590        AppCallbackNotifier* mAppCallbackNotifier;
591        TIUTILS::MessageQueue mNotificationThreadQ;
592    public:
593        enum NotificationThreadCommands
594        {
595        NOTIFIER_START,
596        NOTIFIER_STOP,
597        NOTIFIER_EXIT,
598        };
599    public:
600        NotificationThread(AppCallbackNotifier* nh)
601            : Thread(false), mAppCallbackNotifier(nh) { }
602        virtual bool threadLoop() {
603            return mAppCallbackNotifier->notificationThread();
604        }
605
606        TIUTILS::MessageQueue &msgQ() { return mNotificationThreadQ;}
607    };
608
609    //Friend declarations
610    friend class NotificationThread;
611
612private:
613    void notifyEvent();
614    void notifyFrame();
615    bool processMessage();
616    void releaseSharedVideoBuffers();
617    status_t dummyRaw();
618    void copyAndSendPictureFrame(CameraFrame* frame, int32_t msgType);
619    void copyAndSendPreviewFrame(CameraFrame* frame, int32_t msgType);
620
621private:
622    mutable Mutex mLock;
623    mutable Mutex mBurstLock;
624    CameraHal* mCameraHal;
625    camera_notify_callback mNotifyCb;
626    camera_data_callback   mDataCb;
627    camera_data_timestamp_callback mDataCbTimestamp;
628    camera_request_memory mRequestMemory;
629    void *mCallbackCookie;
630
631    //Keeps Video MemoryHeaps and Buffers within
632    //these objects
633    KeyedVector<unsigned int, unsigned int> mVideoHeaps;
634    KeyedVector<unsigned int, unsigned int> mVideoBuffers;
635    KeyedVector<unsigned int, unsigned int> mVideoMap;
636
637    //Keeps list of Gralloc handles and associated Video Metadata Buffers
638    KeyedVector<uint32_t, uint32_t> mVideoMetadataBufferMemoryMap;
639    KeyedVector<uint32_t, uint32_t> mVideoMetadataBufferReverseMap;
640
641    bool mBufferReleased;
642
643    sp< NotificationThread> mNotificationThread;
644    EventProvider *mEventProvider;
645    FrameProvider *mFrameProvider;
646    TIUTILS::MessageQueue mEventQ;
647    TIUTILS::MessageQueue mFrameQ;
648    NotifierState mNotifierState;
649
650    bool mPreviewing;
651    camera_memory_t* mPreviewMemory;
652    unsigned char* mPreviewBufs[MAX_BUFFERS];
653    int mPreviewBufCount;
654    const char *mPreviewPixelFormat;
655    KeyedVector<unsigned int, sp<MemoryHeapBase> > mSharedPreviewHeaps;
656    KeyedVector<unsigned int, sp<MemoryBase> > mSharedPreviewBuffers;
657
658    //Burst mode active
659    bool mBurst;
660    mutable Mutex mRecordingLock;
661    bool mRecording;
662    bool mMeasurementEnabled;
663
664    bool mUseMetaDataBufferMode;
665    bool mRawAvailable;
666
667    bool mUseVideoBuffers;
668
669    int mVideoWidth;
670    int mVideoHeight;
671
672};
673
674
675/**
676  * Class used for allocating memory for JPEG bit stream buffers, output buffers of camera in no overlay case
677  */
678class MemoryManager : public BufferProvider, public virtual RefBase
679{
680public:
681    MemoryManager():mIonFd(-1){ }
682
683    ///Initializes the memory manager creates any resources required
684    status_t initialize() { return NO_ERROR; }
685
686    int setErrorHandler(ErrorNotifier *errorNotifier);
687    virtual void* allocateBuffer(int width, int height, const char* format, int &bytes, int numBufs);
688    virtual uint32_t * getOffsets();
689    virtual int getFd() ;
690    virtual int freeBuffer(void* buf);
691
692private:
693
694    sp<ErrorNotifier> mErrorNotifier;
695    int mIonFd;
696    KeyedVector<unsigned int, unsigned int> mIonHandleMap;
697    KeyedVector<unsigned int, unsigned int> mIonFdMap;
698    KeyedVector<unsigned int, unsigned int> mIonBufLength;
699};
700
701
702
703
704/**
705  * CameraAdapter interface class
706  * Concrete classes derive from this class and provide implementations based on the specific camera h/w interface
707  */
708
709class CameraAdapter: public FrameNotifier, public virtual RefBase
710{
711protected:
712    enum AdapterActiveStates {
713        INTIALIZED_ACTIVE =     1 << 0,
714        LOADED_PREVIEW_ACTIVE = 1 << 1,
715        PREVIEW_ACTIVE =        1 << 2,
716        LOADED_CAPTURE_ACTIVE = 1 << 3,
717        CAPTURE_ACTIVE =        1 << 4,
718        BRACKETING_ACTIVE =     1 << 5,
719        AF_ACTIVE =             1 << 6,
720        ZOOM_ACTIVE =           1 << 7,
721        VIDEO_ACTIVE =          1 << 8,
722    };
723public:
724    typedef struct
725        {
726         void *mBuffers;
727         uint32_t *mOffsets;
728         int mFd;
729         size_t mLength;
730         size_t mCount;
731         size_t mMaxQueueable;
732        } BuffersDescriptor;
733
734    enum CameraCommands
735        {
736        CAMERA_START_PREVIEW                        = 0,
737        CAMERA_STOP_PREVIEW                         = 1,
738        CAMERA_START_VIDEO                          = 2,
739        CAMERA_STOP_VIDEO                           = 3,
740        CAMERA_START_IMAGE_CAPTURE                  = 4,
741        CAMERA_STOP_IMAGE_CAPTURE                   = 5,
742        CAMERA_PERFORM_AUTOFOCUS                    = 6,
743        CAMERA_CANCEL_AUTOFOCUS                     = 7,
744        CAMERA_PREVIEW_FLUSH_BUFFERS                = 8,
745        CAMERA_START_SMOOTH_ZOOM                    = 9,
746        CAMERA_STOP_SMOOTH_ZOOM                     = 10,
747        CAMERA_USE_BUFFERS_PREVIEW                  = 11,
748        CAMERA_SET_TIMEOUT                          = 12,
749        CAMERA_CANCEL_TIMEOUT                       = 13,
750        CAMERA_START_BRACKET_CAPTURE                = 14,
751        CAMERA_STOP_BRACKET_CAPTURE                 = 15,
752        CAMERA_QUERY_RESOLUTION_PREVIEW             = 16,
753        CAMERA_QUERY_BUFFER_SIZE_IMAGE_CAPTURE      = 17,
754        CAMERA_QUERY_BUFFER_SIZE_PREVIEW_DATA       = 18,
755        CAMERA_USE_BUFFERS_IMAGE_CAPTURE            = 19,
756        CAMERA_USE_BUFFERS_PREVIEW_DATA             = 20,
757        CAMERA_TIMEOUT_EXPIRED                      = 21,
758        CAMERA_START_FD                             = 22,
759        CAMERA_STOP_FD                              = 23,
760        CAMERA_SWITCH_TO_EXECUTING                  = 24,
761        };
762
763    enum CameraMode
764        {
765        CAMERA_PREVIEW,
766        CAMERA_IMAGE_CAPTURE,
767        CAMERA_VIDEO,
768        CAMERA_MEASUREMENT
769        };
770
771    enum AdapterState {
772        INTIALIZED_STATE           = INTIALIZED_ACTIVE,
773        LOADED_PREVIEW_STATE       = LOADED_PREVIEW_ACTIVE | INTIALIZED_ACTIVE,
774        PREVIEW_STATE              = PREVIEW_ACTIVE | INTIALIZED_ACTIVE,
775        LOADED_CAPTURE_STATE       = LOADED_CAPTURE_ACTIVE | PREVIEW_ACTIVE | INTIALIZED_ACTIVE,
776        CAPTURE_STATE              = CAPTURE_ACTIVE | PREVIEW_ACTIVE | INTIALIZED_ACTIVE,
777        BRACKETING_STATE           = BRACKETING_ACTIVE | CAPTURE_ACTIVE | PREVIEW_ACTIVE | INTIALIZED_ACTIVE ,
778        AF_STATE                   = AF_ACTIVE | PREVIEW_ACTIVE | INTIALIZED_ACTIVE,
779        ZOOM_STATE                 = ZOOM_ACTIVE | PREVIEW_ACTIVE | INTIALIZED_ACTIVE,
780        VIDEO_STATE                = VIDEO_ACTIVE | PREVIEW_ACTIVE | INTIALIZED_ACTIVE,
781        VIDEO_AF_STATE             = VIDEO_ACTIVE | AF_ACTIVE | PREVIEW_ACTIVE | INTIALIZED_ACTIVE,
782        VIDEO_ZOOM_STATE           = VIDEO_ACTIVE | ZOOM_ACTIVE | PREVIEW_ACTIVE | INTIALIZED_ACTIVE,
783        VIDEO_LOADED_CAPTURE_STATE = VIDEO_ACTIVE | LOADED_CAPTURE_ACTIVE | PREVIEW_ACTIVE | INTIALIZED_ACTIVE,
784        VIDEO_CAPTURE_STATE        = VIDEO_ACTIVE | CAPTURE_ACTIVE | PREVIEW_ACTIVE | INTIALIZED_ACTIVE,
785        AF_ZOOM_STATE              = AF_ACTIVE | ZOOM_ACTIVE | PREVIEW_ACTIVE | INTIALIZED_ACTIVE,
786        BRACKETING_ZOOM_STATE      = BRACKETING_ACTIVE | ZOOM_ACTIVE | PREVIEW_ACTIVE | INTIALIZED_ACTIVE,
787    };
788
789public:
790
791    ///Initialzes the camera adapter creates any resources required
792    virtual int initialize(CameraProperties::Properties*) = 0;
793
794    virtual int setErrorHandler(ErrorNotifier *errorNotifier) = 0;
795
796    //Message/Frame notification APIs
797    virtual void enableMsgType(int32_t msgs,
798                               frame_callback callback = NULL,
799                               event_callback eventCb = NULL,
800                               void *cookie = NULL) = 0;
801    virtual void disableMsgType(int32_t msgs, void* cookie) = 0;
802    virtual void returnFrame(void* frameBuf, CameraFrame::FrameType frameType) = 0;
803    virtual void addFramePointers(void *frameBuf, void *buf) = 0;
804    virtual void removeFramePointers() = 0;
805
806    //APIs to configure Camera adapter and get the current parameter set
807    virtual int setParameters(const CameraParameters& params) = 0;
808    virtual void getParameters(CameraParameters& params) = 0;
809
810    //API to flush the buffers from Camera
811     status_t flushBuffers()
812        {
813        return sendCommand(CameraAdapter::CAMERA_PREVIEW_FLUSH_BUFFERS);
814        }
815
816    //Registers callback for returning image buffers back to CameraHAL
817    virtual int registerImageReleaseCallback(release_image_buffers_callback callback, void *user_data) = 0;
818
819    //Registers callback, which signals a completed image capture
820    virtual int registerEndCaptureCallback(end_image_capture_callback callback, void *user_data) = 0;
821
822    //API to send a command to the camera
823    virtual status_t sendCommand(CameraCommands operation, int value1=0, int value2=0, int value3=0) = 0;
824
825    virtual ~CameraAdapter() {};
826
827    //Retrieves the current Adapter state
828    virtual AdapterState getState() = 0;
829
830    //Retrieves the next Adapter state
831    virtual AdapterState getNextState() = 0;
832
833    // Receive orientation events from CameraHal
834    virtual void onOrientationEvent(uint32_t orientation, uint32_t tilt) = 0;
835
836    // Rolls the state machine back to INTIALIZED_STATE from the current state
837    virtual status_t rollbackToInitializedState() = 0;
838
839    // Retrieves the current Adapter state - for internal use (not locked)
840    virtual status_t getState(AdapterState &state) = 0;
841    // Retrieves the next Adapter state - for internal use (not locked)
842    virtual status_t getNextState(AdapterState &state) = 0;
843
844protected:
845    //The first two methods will try to switch the adapter state.
846    //Every call to setState() should be followed by a corresponding
847    //call to commitState(). If the state switch fails, then it will
848    //get reset to the previous state via rollbackState().
849    virtual status_t setState(CameraCommands operation) = 0;
850    virtual status_t commitState() = 0;
851    virtual status_t rollbackState() = 0;
852};
853
854class DisplayAdapter : public BufferProvider, public virtual RefBase
855{
856public:
857    typedef struct S3DParameters_t
858    {
859        int mode;
860        int framePacking;
861        int order;
862        int subSampling;
863    } S3DParameters;
864
865    ///Initializes the display adapter creates any resources required
866    virtual int initialize() = 0;
867
868    virtual int setPreviewWindow(struct preview_stream_ops *window) = 0;
869    virtual int setFrameProvider(FrameNotifier *frameProvider) = 0;
870    virtual int setErrorHandler(ErrorNotifier *errorNotifier) = 0;
871    virtual int enableDisplay(int width, int height, struct timeval *refTime = NULL, S3DParameters *s3dParams = NULL) = 0;
872    virtual int disableDisplay(bool cancel_buffer = true) = 0;
873    //Used for Snapshot review temp. pause
874    virtual int pauseDisplay(bool pause) = 0;
875
876#if PPM_INSTRUMENTATION || PPM_INSTRUMENTATION_ABS
877    //Used for shot to snapshot measurement
878    virtual int setSnapshotTimeRef(struct timeval *refTime = NULL) = 0;
879#endif
880
881    virtual int useBuffers(void *bufArr, int num) = 0;
882    virtual bool supportsExternalBuffering() = 0;
883
884    // Get max queueable buffers display supports
885    // This function should only be called after
886    // allocateBuffer
887    virtual int maxQueueableBuffers(unsigned int& queueable) = 0;
888};
889
890static void releaseImageBuffers(void *userData);
891
892static void endImageCapture(void *userData);
893
894 /**
895    Implementation of the Android Camera hardware abstraction layer
896
897    This class implements the interface methods defined in CameraHardwareInterface
898    for the OMAP4 platform
899
900*/
901class CameraHal
902
903{
904
905public:
906    ///Constants
907    static const int NO_BUFFERS_PREVIEW;
908    static const int NO_BUFFERS_IMAGE_CAPTURE;
909    static const uint32_t VFR_SCALE = 1000;
910
911
912    /*--------------------Interface Methods---------------------------------*/
913
914     //@{
915public:
916
917    /** Set the notification and data callbacks */
918    void setCallbacks(camera_notify_callback notify_cb,
919                        camera_data_callback data_cb,
920                        camera_data_timestamp_callback data_cb_timestamp,
921                        camera_request_memory get_memory,
922                        void *user);
923
924    /** Receives orientation events from SensorListener **/
925    void onOrientationEvent(uint32_t orientation, uint32_t tilt);
926
927    /**
928     * The following three functions all take a msgtype,
929     * which is a bitmask of the messages defined in
930     * include/ui/Camera.h
931     */
932
933    /**
934     * Enable a message, or set of messages.
935     */
936    void        enableMsgType(int32_t msgType);
937
938    /**
939     * Disable a message, or a set of messages.
940     */
941    void        disableMsgType(int32_t msgType);
942
943    /**
944     * Query whether a message, or a set of messages, is enabled.
945     * Note that this is operates as an AND, if any of the messages
946     * queried are off, this will return false.
947     */
948    int        msgTypeEnabled(int32_t msgType);
949
950    /**
951     * Start preview mode.
952     */
953    int    startPreview();
954
955    /**
956     * Only used if overlays are used for camera preview.
957     */
958    int setPreviewWindow(struct preview_stream_ops *window);
959
960    /**
961     * Stop a previously started preview.
962     */
963    void        stopPreview();
964
965    /**
966     * Returns true if preview is enabled.
967     */
968    bool        previewEnabled();
969
970    /**
971     * Start record mode. When a record image is available a CAMERA_MSG_VIDEO_FRAME
972     * message is sent with the corresponding frame. Every record frame must be released
973     * by calling releaseRecordingFrame().
974     */
975    int    startRecording();
976
977    /**
978     * Stop a previously started recording.
979     */
980    void        stopRecording();
981
982    /**
983     * Returns true if recording is enabled.
984     */
985    int        recordingEnabled();
986
987    /**
988     * Release a record frame previously returned by CAMERA_MSG_VIDEO_FRAME.
989     */
990    void        releaseRecordingFrame(const void *opaque);
991
992    /**
993     * Start auto focus, the notification callback routine is called
994     * with CAMERA_MSG_FOCUS once when focusing is complete. autoFocus()
995     * will be called again if another auto focus is needed.
996     */
997    int    autoFocus();
998
999    /**
1000     * Cancels auto-focus function. If the auto-focus is still in progress,
1001     * this function will cancel it. Whether the auto-focus is in progress
1002     * or not, this function will return the focus position to the default.
1003     * If the camera does not support auto-focus, this is a no-op.
1004     */
1005    int    cancelAutoFocus();
1006
1007    /**
1008     * Take a picture.
1009     */
1010    int    takePicture();
1011
1012    /**
1013     * Cancel a picture that was started with takePicture.  Calling this
1014     * method when no picture is being taken is a no-op.
1015     */
1016    int    cancelPicture();
1017
1018    /** Set the camera parameters. */
1019    int    setParameters(const char* params);
1020    int    setParameters(const CameraParameters& params);
1021
1022    /** Return the camera parameters. */
1023    char*  getParameters();
1024    void putParameters(char *);
1025
1026    /**
1027     * Send command to camera driver.
1028     */
1029    int sendCommand(int32_t cmd, int32_t arg1, int32_t arg2);
1030
1031    /**
1032     * Release the hardware resources owned by this object.  Note that this is
1033     * *not* done in the destructor.
1034     */
1035    void release();
1036
1037    /**
1038     * Dump state of the camera hardware
1039     */
1040    int dump(int fd) const;
1041
1042
1043		status_t storeMetaDataInBuffers(bool enable);
1044
1045     //@}
1046
1047/*--------------------Internal Member functions - Public---------------------------------*/
1048
1049public:
1050 /** @name internalFunctionsPublic */
1051  //@{
1052
1053    /** Constructor of CameraHal */
1054    CameraHal(int cameraId);
1055
1056    // Destructor of CameraHal
1057    ~CameraHal();
1058
1059    /** Initialize CameraHal */
1060    status_t initialize(CameraProperties::Properties*);
1061
1062    /** Deinitialize CameraHal */
1063    void deinitialize();
1064
1065#if PPM_INSTRUMENTATION || PPM_INSTRUMENTATION_ABS
1066
1067    //Uses the constructor timestamp as a reference to calcluate the
1068    // elapsed time
1069    static void PPM(const char *);
1070    //Uses a user provided timestamp as a reference to calcluate the
1071    // elapsed time
1072    static void PPM(const char *, struct timeval*, ...);
1073
1074#endif
1075
1076    /** Free image bufs */
1077    status_t freeImageBufs();
1078
1079    //Signals the end of image capture
1080    status_t signalEndImageCapture();
1081
1082    //Events
1083    static void eventCallbackRelay(CameraHalEvent* event);
1084    void eventCallback(CameraHalEvent* event);
1085    void setEventProvider(int32_t eventMask, MessageNotifier * eventProvider);
1086
1087/*--------------------Internal Member functions - Private---------------------------------*/
1088private:
1089
1090    /** @name internalFunctionsPrivate */
1091    //@{
1092
1093    /**  Set the camera parameters specific to Video Recording. */
1094    bool        setVideoModeParameters(const CameraParameters&);
1095
1096    /** Reset the camera parameters specific to Video Recording. */
1097    bool       resetVideoModeParameters();
1098
1099    /** Restart the preview with setParameter. */
1100    status_t        restartPreview();
1101
1102    status_t parseResolution(const char *resStr, int &width, int &height);
1103
1104    void insertSupportedParams();
1105
1106    /** Allocate preview data buffers */
1107    status_t allocPreviewDataBufs(size_t size, size_t bufferCount);
1108
1109    /** Free preview data buffers */
1110    status_t freePreviewDataBufs();
1111
1112    /** Allocate preview buffers */
1113    status_t allocPreviewBufs(int width, int height, const char* previewFormat, unsigned int bufferCount, unsigned int &max_queueable);
1114
1115    /** Allocate video buffers */
1116    status_t allocVideoBufs(uint32_t width, uint32_t height, uint32_t bufferCount);
1117
1118    /** Allocate image capture buffers */
1119    status_t allocImageBufs(unsigned int width, unsigned int height, size_t length, const char* previewFormat, unsigned int bufferCount);
1120
1121    /** Free preview buffers */
1122    status_t freePreviewBufs();
1123
1124    /** Free video bufs */
1125    status_t freeVideoBufs(void *bufs);
1126
1127    //Check if a given resolution is supported by the current camera
1128    //instance
1129    bool isResolutionValid(unsigned int width, unsigned int height, const char *supportedResolutions);
1130
1131    //Check if a given parameter is supported by the current camera
1132    // instance
1133    bool isParameterValid(const char *param, const char *supportedParams);
1134    bool isParameterValid(int param, const char *supportedParams);
1135    status_t doesSetParameterNeedUpdate(const char *new_param, const char *old_params, bool &update);
1136
1137    /** Initialize default parameters */
1138    void initDefaultParameters();
1139
1140    void dumpProperties(CameraProperties::Properties& cameraProps);
1141
1142    status_t startImageBracketing();
1143
1144    status_t stopImageBracketing();
1145
1146    void setShutter(bool enable);
1147
1148    void forceStopPreview();
1149
1150    void selectFPSRange(int framerate, int *min_fps, int *max_fps);
1151
1152    void setPreferredPreviewRes(int width, int height);
1153    void resetPreviewRes(CameraParameters *mParams, int width, int height);
1154
1155    //@}
1156
1157
1158/*----------Member variables - Public ---------------------*/
1159public:
1160    int32_t mMsgEnabled;
1161    bool mRecordEnabled;
1162    nsecs_t mCurrentTime;
1163    bool mFalsePreview;
1164    bool mPreviewEnabled;
1165    uint32_t mTakePictureQueue;
1166    bool mBracketingEnabled;
1167    bool mBracketingRunning;
1168    //User shutter override
1169    bool mShutterEnabled;
1170    bool mMeasurementEnabled;
1171    //Google's parameter delimiter
1172    static const char PARAMS_DELIMITER[];
1173
1174    CameraAdapter *mCameraAdapter;
1175    sp<AppCallbackNotifier> mAppCallbackNotifier;
1176    sp<DisplayAdapter> mDisplayAdapter;
1177    sp<MemoryManager> mMemoryManager;
1178
1179    sp<IMemoryHeap> mPictureHeap;
1180
1181    int* mGrallocHandles;
1182    bool mFpsRangeChangedByApp;
1183
1184
1185
1186
1187
1188///static member vars
1189
1190#if PPM_INSTRUMENTATION || PPM_INSTRUMENTATION_ABS
1191
1192    //Timestamp from the CameraHal constructor
1193    static struct timeval ppm_start;
1194    //Timestamp of the autoFocus command
1195    static struct timeval mStartFocus;
1196    //Timestamp of the startPreview command
1197    static struct timeval mStartPreview;
1198    //Timestamp of the takePicture command
1199    static struct timeval mStartCapture;
1200
1201#endif
1202
1203/*----------Member variables - Private ---------------------*/
1204private:
1205    bool mDynamicPreviewSwitch;
1206    //keeps paused state of display
1207    bool mDisplayPaused;
1208    //Index of current camera adapter
1209    int mCameraIndex;
1210
1211    mutable Mutex mLock;
1212
1213    sp<SensorListener> mSensorListener;
1214
1215    void* mCameraAdapterHandle;
1216
1217    CameraParameters mParameters;
1218    bool mPreviewRunning;
1219    bool mPreviewStateOld;
1220    bool mRecordingEnabled;
1221    EventProvider *mEventProvider;
1222
1223    int32_t *mPreviewDataBufs;
1224    uint32_t *mPreviewDataOffsets;
1225    int mPreviewDataFd;
1226    int mPreviewDataLength;
1227    int32_t *mImageBufs;
1228    uint32_t *mImageOffsets;
1229    int mImageFd;
1230    int mImageLength;
1231    int32_t *mPreviewBufs;
1232    uint32_t *mPreviewOffsets;
1233    int mPreviewLength;
1234    int mPreviewFd;
1235    int32_t *mVideoBufs;
1236    uint32_t *mVideoOffsets;
1237    int mVideoFd;
1238    int mVideoLength;
1239
1240    int mBracketRangePositive;
1241    int mBracketRangeNegative;
1242
1243    ///@todo Rename this as preview buffer provider
1244    BufferProvider *mBufProvider;
1245    BufferProvider *mVideoBufProvider;
1246
1247
1248    CameraProperties::Properties* mCameraProperties;
1249
1250    bool mPreviewStartInProgress;
1251
1252    bool mSetPreviewWindowCalled;
1253
1254    uint32_t mPreviewWidth;
1255    uint32_t mPreviewHeight;
1256    int32_t mMaxZoomSupported;
1257
1258    int mVideoWidth;
1259    int mVideoHeight;
1260
1261};
1262
1263
1264}; // namespace android
1265
1266#endif
1267