/*
** Copyright 2008, Google Inc.
**
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
**
**     http://www.apache.org/licenses/LICENSE-2.0
**
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*/

#ifndef ANDROID_HARDWARE_QUALCOMM_CAMERA_HARDWARE_H
#define ANDROID_HARDWARE_QUALCOMM_CAMERA_HARDWARE_H

#include <camera/CameraHardwareInterface.h>
#include <binder/MemoryBase.h>
#include <binder/MemoryHeapBase.h>
#include <utils/threads.h>
#include <stdint.h>

extern "C" {
#include <linux/android_pmem.h>
#include "msm_camera.h"
}

#define MSM_CAMERA_CONTROL "/dev/msm_camera/control0"
#define JPEG_EVENT_DONE 0 /* guess */

#define CAM_CTRL_SUCCESS 1

#define REVISION_H "4"

#define CAMERA_SET_PARM_DIMENSION 1
#define CAMERA_SET_PARM_ZOOM 2
#define CAMERA_GET_PARM_MAXZOOM 47
#define CAMERA_SET_PARM_WB 14
#define CAMERA_SET_PARM_EFFECT 15
#define CAMERA_SET_PARM_ANTIBANDING 21
#define CAMERA_STOP_PREVIEW 38
#define CAMERA_START_PREVIEW 39
#define CAMERA_EXIT 43

#define CAMERA_SET_PARM_AUTO_FOCUS 13
#define CAMERA_START_SNAPSHOT 40
#define CAMERA_STOP_SNAPSHOT 42

#define AF_MODE_AUTO 2
#define CAMERA_AUTO_FOCUS_CANCEL 1 //204

#define PAD_TO_WORD(x) ((x&1) ? x+1 : x)

typedef enum
{
    CAMERA_WB_MIN_MINUS_1,
    CAMERA_WB_AUTO = 1,  /* This list must match aeecamera.h */
    CAMERA_WB_CUSTOM,
    CAMERA_WB_INCANDESCENT,
    CAMERA_WB_FLUORESCENT,
    CAMERA_WB_DAYLIGHT,
    CAMERA_WB_CLOUDY_DAYLIGHT,
    CAMERA_WB_TWILIGHT,
    CAMERA_WB_SHADE,
    CAMERA_WB_MAX_PLUS_1
} camera_wb_type;

typedef enum
{
    CAMERA_RSP_CB_SUCCESS,    /* Function is accepted         */
    CAMERA_EXIT_CB_DONE,      /* Function is executed         */
    CAMERA_EXIT_CB_FAILED,    /* Execution failed or rejected */
    CAMERA_EXIT_CB_DSP_IDLE,  /* DSP is in idle state         */
    CAMERA_EXIT_CB_DSP_ABORT, /* Abort due to DSP failure     */
    CAMERA_EXIT_CB_ABORT,     /* Function aborted             */
    CAMERA_EXIT_CB_ERROR,     /* Failed due to resource       */
    CAMERA_EVT_CB_FRAME,      /* Preview or video frame ready */
    CAMERA_EVT_CB_PICTURE,    /* Picture frame ready for multi-shot */
    CAMERA_STATUS_CB,         /* Status updated               */
    CAMERA_EXIT_CB_FILE_SIZE_EXCEEDED, /* Specified file size not achieved,
                                          encoded file written & returned anyway */
    CAMERA_EXIT_CB_BUFFER,    /* A buffer is returned         */
    CAMERA_EVT_CB_SNAPSHOT_DONE,/*  Snapshot updated               */
    CAMERA_CB_MAX
} camera_cb_type;

typedef enum
{
    CAMERA_ANTIBANDING_OFF,
    CAMERA_ANTIBANDING_60HZ,
    CAMERA_ANTIBANDING_50HZ,
    CAMERA_ANTIBANDING_AUTO,
    CAMERA_MAX_ANTIBANDING,
} camera_antibanding_type;

//typedef struct
//{
//    uint32_t timestamp;  /* seconds since 1/6/1980          */
//    double   latitude;   /* degrees, WGS ellipsoid */
//    double   longitude;  /* degrees                */
//    int16_t  altitude;   /* meters                          */
//} camera_position_type;

typedef struct
{
    unsigned int in1_w;
    unsigned int in1_h;
    unsigned int out1_w;
    unsigned int out1_h;
    unsigned int in2_w;
    unsigned int in2_h;
    unsigned int out2_w;
    unsigned int out2_h;
    uint8_t update_flag;
} common_crop_t;

typedef struct
{
    unsigned short picture_width;
    unsigned short picture_height;
    unsigned short display_width;
    unsigned short display_height;
    unsigned short filler;
    unsigned short filler2;
    unsigned short ui_thumbnail_height;
    unsigned short ui_thumbnail_width;
    unsigned short filler3;
    unsigned short filler4;
    unsigned short filler5;
    unsigned short filler6;
    unsigned short filler7;
    unsigned short filler8;
} cam_ctrl_dimension_t;

typedef uint8_t cam_ctrl_type;
typedef uint8_t jpeg_event_t;
typedef unsigned int isp3a_af_mode_t;

struct str_map {
    const char *const desc;
    int val;
};

struct dstr_map {
    const char *const desc;
    const char *const val;
};

// ********************************************************************************************************
typedef unsigned int exif_tag_id_t;

#define EXIF_RATIONAL 5
#define EXIF_ASCII 2
#define EXIF_BYTE 1

typedef struct {
        int val;
        int otherval;
} rat_t;


typedef union {
        char * _ascii; /* At byte 16 relative to exif_tag_entry_t */
        rat_t * _rats;
        rat_t  _rat;
        uint8_t _byte;
} exif_tag_data_t;

/* The entire exif_tag_entry_t struct must be 24 bytes in length */
typedef unsigned int exif_tag_type_t;
typedef struct {
        exif_tag_type_t type;
        uint32_t copy;
        uint32_t count;
        exif_tag_data_t data;
} exif_tag_entry_t;

typedef struct {
        exif_tag_id_t tag_id;
        exif_tag_entry_t tag_entry;
} exif_tags_info_t;

/* EXIF tag IDs */
#define EXIFTAGID_GPS_LATITUDE 0x20002
#define EXIFTAGID_GPS_LATITUDE_REF 0x10001
#define EXIFTAGID_GPS_LONGITUDE 0x40004
#define EXIFTAGID_GPS_LONGITUDE_REF 0x30003
#define EXIFTAGID_GPS_ALTITUDE 0x60006
#define EXIFTAGID_GPS_ALTITUDE_REF 0x50005
#define EXIFTAGID_EXIF_CAMERA_MAKER 0x21010F
#define EXIFTAGID_EXIF_CAMERA_MODEL 0x220110
#define EXIFTAGID_EXIF_DATE_TIME_ORIGINAL 0x3A9003
#define EXIFTAGID_EXIF_DATE_TIME 0x3B9004
/* End of values originally in proprietary headers */
// ********************************************************************************************************

namespace android {

class QualcommCameraHardware : public CameraHardwareInterface {
public:

    virtual sp<IMemoryHeap> getPreviewHeap() const;
    virtual sp<IMemoryHeap> getRawHeap() const;
    virtual void setCallbacks(notify_callback notify_cb,
                              data_callback data_cb,
                              data_callback_timestamp data_cb_timestamp,
                              void* user);

    virtual void enableMsgType(int32_t msgType);
    virtual void disableMsgType(int32_t msgType);
    virtual bool msgTypeEnabled(int32_t msgType);

    virtual status_t dump(int fd, const Vector<String16>& args) const;
    virtual status_t startPreview();
    virtual void stopPreview();
    virtual bool previewEnabled();
    virtual status_t startRecording();
    virtual void stopRecording();
    virtual bool recordingEnabled();
    virtual void releaseRecordingFrame(const sp<IMemory>& mem);
    virtual status_t autoFocus();
    virtual status_t takePicture();
    virtual status_t cancelPicture();
    virtual void initCameraParameters();
    virtual status_t setParameters(const CameraParameters& params);
    virtual CameraParameters getParameters() const;
    virtual status_t sendCommand(int32_t command, int32_t arg1, int32_t arg2);
    virtual void release();
    virtual status_t cancelAutoFocus();

    static sp<CameraHardwareInterface> createInstance();
    static sp<QualcommCameraHardware> getInstance();

    bool reg_unreg_buf(int camfd,
                       int width,
                       int height,
                       msm_frame *frame,
                       msm_pmem pmem_type,
                       unsigned char unregister,
                       unsigned char active);
    void native_register_preview_bufs(int camfd,
                                      void *pDim,
                                      struct msm_frame *frame,
                                      unsigned char active);
    void native_unregister_preview_bufs(int camfd,
                                        void *pDim,
                                        struct msm_frame *frame);

    void receivePreviewFrame(struct msm_frame *frame);
    void receiveJpegPicture(void);
    void receiveJpegPictureFragment(uint8_t *buf, uint32_t size);
    void notifyShutter();

private:
    QualcommCameraHardware();
    virtual ~QualcommCameraHardware();
    status_t startPreviewInternal();
    void stopPreviewInternal();
    friend void *auto_focus_thread(void *user);
    void runAutoFocus();
    bool native_set_dimension (int camfd);
    bool native_jpeg_encode (void);
    bool native_set_parm(cam_ctrl_type type, uint16_t length, void *value);
    bool native_set_dimension(cam_ctrl_dimension_t *value);
    int getParm(const char *parm_str, const str_map *parm_map);
    const char* getParm(const char *parm_str, const dstr_map *parm_map);
    void setGpsParameters();
    const char *KEY_GPS_LATITUDE;

    static wp<QualcommCameraHardware> singleton;

    /* These constants reflect the number of buffers that libmmcamera requires
       for preview and raw, and need to be updated when libmmcamera
       changes.
    */
    static const int kPreviewBufferCount = 4;
    static const int kRawBufferCount = 1;
    static const int kJpegBufferCount = 1;
    static const int kRawFrameHeaderSize = 0;

    //TODO: put the picture dimensions in the CameraParameters object;
    CameraParameters mParameters;
    int mPreviewHeight;
    int mPreviewWidth;
    int mRawHeight;
    int mRawWidth;
    unsigned int frame_size;
    bool mCameraRunning;
    bool mPreviewInitialized;
    bool mRawInitialized;

    // This class represents a heap which maintains several contiguous
    // buffers.  The heap may be backed by pmem (when pmem_pool contains
    // the name of a /dev/pmem* file), or by ashmem (when pmem_pool == NULL).

    struct MemPool : public RefBase {
        MemPool(int buffer_size, int num_buffers,
                int frame_size,
                int frame_offset,
                const char *name);

        virtual ~MemPool() = 0;

        void completeInitialization();
        bool initialized() const {
            return mHeap != NULL && mHeap->base() != MAP_FAILED;
        }

        virtual status_t dump(int fd, const Vector<String16>& args) const;

        int mBufferSize;
        int mNumBuffers;
        int mFrameSize;
        int mFrameOffset;
        sp<MemoryHeapBase> mHeap;
        sp<MemoryBase> *mBuffers;

        const char *mName;
    };

    struct AshmemPool : public MemPool {
        AshmemPool(int buffer_size, int num_buffers,
                   int frame_size,
                   int frame_offset,
                   const char *name);
    };

    struct PmemPool : public MemPool {
        PmemPool(const char *pmem_pool,
                 int control_camera_fd,
                 msm_pmem pmem_type,
                 int buffer_size, int num_buffers,
                 int frame_size, int frame_offset,
                 const char *name);
        virtual ~PmemPool();
        int mFd;
        msm_pmem mPmemType;
        int mCameraControlFd;
        uint32_t mAlignedSize;
        struct pmem_region mSize;
    };

    struct PreviewPmemPool : public PmemPool {
        virtual ~PreviewPmemPool();
        PreviewPmemPool(int control_fd,
                        int buffer_size,
                        int num_buffers,
                        int frame_size,
                        int frame_offset,
                        const char *name);
    };

    sp<PreviewPmemPool> mPreviewHeap;
    sp<PmemPool> mThumbnailHeap;
    sp<PmemPool> mRawHeap;
    sp<AshmemPool> mJpegHeap;

    void startCamera();
    bool initPreview();
    void deinitPreview();
    bool initRaw(bool initJpegHeap);
    void deinitRaw();

    friend void *jpeg_encoder_thread( void *user );
    void runJpegEncodeThread(void *data);

    bool mFrameThreadRunning;
    Mutex mFrameThreadWaitLock;
    Condition mFrameThreadWait;
    friend void *frame_thread(void *user);
    void runFrameThread(void *data);
    status_t setGpsLocation(const CameraParameters& params);

    bool mShutterPending;
    Mutex mShutterLock;

    bool mSnapshotThreadRunning;
    Mutex mSnapshotThreadWaitLock;
    Condition mSnapshotThreadWait;
    friend void *snapshot_thread(void *user);
    void runSnapshotThread(void *data);

    void initDefaultParameters();

    void setAntibanding();
    void setEffect();
    void setWhiteBalance();
    void setZoom();

    Mutex mLock;
    bool mReleasedRecordingFrame;

    void receiveRawPicture(void);


    Mutex mRecordLock;
    Mutex mRecordFrameLock;
    Condition mRecordWait;
    Condition mStateWait;

    /* mJpegSize keeps track of the size of the accumulated JPEG.  We clear it
       when we are about to take a picture, so at any time it contains either
       zero, or the size of the last JPEG picture taken.
    */
    uint32_t mJpegSize;

    notify_callback    mNotifyCb;
    data_callback      mDataCb;
    data_callback_timestamp mDataCbTimestamp;
    void               *mCallbackCookie;

    int32_t             mMsgEnabled;

    unsigned int        mPreviewFrameSize;
    int                 mRawSize;
    int                 mJpegMaxSize;

#if DLOPEN_LIBMMCAMERA
    void *libmmcamera;
    void *libmmcamera_target;
#endif

    int mCameraControlFd;
    cam_ctrl_dimension_t mDimension;
    bool mAutoFocusThreadRunning;
    Mutex mAutoFocusThreadLock;
    int mAutoFocusFd;

    pthread_t mCamConfigThread;
    pthread_t mFrameThread;
    pthread_t mSnapshotThread;

    common_crop_t mCrop;

    struct msm_frame frames[kPreviewBufferCount];
    bool mInPreviewCallback;
    bool mCameraRecording;
    int32_t mCurZoom;
};

}; // namespace android

#endif