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#ifndef __SAA7146_VV__
#define __SAA7146_VV__

#include <linux/videodev2.h>

#include <media/saa7146.h>
#include <media/video-buf.h>

#define MAX_SAA7146_CAPTURE_BUFFERS     32      /* arbitrary */
#define BUFFER_TIMEOUT     (HZ/2)  /* 0.5 seconds */

#define WRITE_RPS0(x) do { \
        dev->d_rps0.cpu_addr[ count++ ] = cpu_to_le32(x); \
        } while (0);


#define WRITE_RPS1(x) do { \
        dev->d_rps1.cpu_addr[ count++ ] = cpu_to_le32(x); \
        } while (0);


struct  saa7146_video_dma {
        u32 base_odd;
        u32 base_even;
        u32 prot_addr;
        u32 pitch;
        u32 base_page;
        u32 num_line_byte;
};

struct saa7146_format {
        char    *name;
        int     pixelformat;
        u32     trans;
        u8      depth;
        int     swap;
};

struct saa7146_standard
{
        char          *name;
        v4l2_std_id   id;

        int v_offset;   /* number of lines of vertical offset before processing */
        int v_field;    /* number of lines in a field for HPS to process */
        int v_calc;     /* number of vertical active lines */
       
        int h_offset;   /* horizontal offset of processing window */
        int h_pixels;   /* number of horizontal pixels to process */
        int h_calc;     /* number of horizontal active pixels */
       
        int v_max_out;
        int h_max_out;
};

/* buffer for one video/vbi frame */
struct saa7146_buf {
        /* common v4l buffer stuff -- must be first */
        struct videobuf_buffer vb;

        /* saa7146 specific */
        struct v4l2_pix_format  *fmt;
        int (*activate)(struct saa7146_dev *dev,
                        struct saa7146_buf *buf,
                        struct saa7146_buf *next);

        /* page tables */
        struct saa7146_pgtable  pt[3];
};

struct saa7146_dmaqueue {
        struct saa7146_dev      *dev;
        struct saa7146_buf      *curr;
        struct list_head        queue;
        struct timer_list       timeout;
};

struct saa7146_overlay {
        struct saa7146_fh       *fh;
        struct v4l2_window      win;
        struct v4l2_clip        clips[16];
        int                     nclips;
};

/* per open data */
struct saa7146_fh {
        struct saa7146_dev      *dev;
        /* if this is a vbi or capture open */
        enum v4l2_buf_type      type;

        /* video overlay */
        struct saa7146_overlay  ov;
       
        /* video capture */
        struct videobuf_queue   video_q;
        struct v4l2_pix_format  video_fmt;

        /* vbi capture */
        struct videobuf_queue   vbi_q;
        struct v4l2_vbi_format  vbi_fmt;
        struct timer_list       vbi_read_timeout;
};

struct saa7146_vv
{
        int vbi_minor;

        /* vbi capture */
        struct saa7146_dmaqueue         vbi_q;
        /* vbi workaround interrupt queue */
        wait_queue_head_t               vbi_wq;
        int                             vbi_fieldcount;
        struct saa7146_fh               *vbi_streaming;

        int video_minor;

        /* video overlay */
        struct v4l2_framebuffer         ov_fb;
        struct saa7146_format           *ov_fmt;
        struct saa7146_overlay          *ov_data;

        /* video capture */
        struct saa7146_dmaqueue         video_q;
        struct saa7146_fh               *streaming;
        enum v4l2_field                 last_field;

        /* common: fixme? shouldn't this be in saa7146_fh?
           (this leads to a more complicated question: shall the driver
           store the different settings (for example S_INPUT) for every open
           and restore it appropriately, or should all settings be common for
           all opens? currently, we do the latter, like all other
           drivers do... */

        struct saa7146_standard *standard;
       
        int     vflip;
        int     hflip;
        int     current_hps_source;
        int     current_hps_sync;

        struct saa7146_dma      d_clipping;     /* pointer to clipping memory */
};

#define SAA7146_EXCLUSIVE       0x1
#define SAA7146_BEFORE          0x2
#define SAA7146_AFTER           0x4

struct saa7146_extension_ioctls
{
        unsigned int    cmd;
        int             flags; 
};

/* flags */
#define SAA7146_EXT_SWAP_ODD_EVEN       0x1     /* needs odd/even fields swapped */
#define SAA7146_USE_PORT_B_FOR_VBI      0x2     /* use input port b for vbi hardware bug workaround */

struct saa7146_ext_vv
{
        /* informations about the video capabilities of the device */
        int     inputs;                
        int     audios;                
        u32     capabilities;
        int     flags;

        /* additionally supported transmission standards */
        struct saa7146_standard *stds;
        int num_stds;
        int (*std_callback)(struct saa7146_dev*, struct saa7146_standard *);
               
        struct saa7146_extension_ioctls *ioctls;
        int (*ioctl)(struct saa7146_fh*, unsigned int cmd, void *arg);
};

struct saa7146_use_ops  {
        void (*init)(struct saa7146_dev *, struct saa7146_vv *);
        void(*open)(struct saa7146_dev *, struct saa7146_fh *);
        void (*release)(struct saa7146_dev *, struct saa7146_fh *,struct file *);
        void (*irq_done)(struct saa7146_dev *, unsigned long status);
        ssize_t (*read)(struct file *, char *, size_t, loff_t *);
        int (*capture_begin)(struct saa7146_fh *);
        int (*capture_end)(struct saa7146_fh *);
};

/* from saa7146_fops.c */
int saa7146_register_device(struct video_device *vid, struct saa7146_dev* dev, char *name, int type);
int saa7146_unregister_device(struct video_device *vid, struct saa7146_dev* dev);
void saa7146_buffer_finish(struct saa7146_dev *dev, struct saa7146_dmaqueue *q, int state);
void saa7146_buffer_next(struct saa7146_dev *dev, struct saa7146_dmaqueue *q,int vbi);
int saa7146_buffer_queue(struct saa7146_dev *dev, struct saa7146_dmaqueue *q, struct saa7146_buf *buf);
void saa7146_buffer_timeout(unsigned long data);
void saa7146_dma_free(struct saa7146_dev *dev,struct saa7146_buf *buf);

int saa7146_vv_init(struct saa7146_dev* dev, struct saa7146_ext_vv *ext_vv);
int saa7146_vv_release(struct saa7146_dev* dev);


/* from saa7146_hlp.c */
void saa7146_set_overlay(struct saa7146_dev *dev, struct saa7146_fh *fh, int v);
void saa7146_set_capture(struct saa7146_dev *dev, struct saa7146_buf *buf, struct saa7146_buf *next);
void saa7146_write_out_dma(struct saa7146_dev* dev, int which, struct saa7146_video_dma* vdma) ;
void saa7146_set_hps_source_and_sync(struct saa7146_dev *saa, int source, int sync);
void saa7146_set_gpio(struct saa7146_dev *saa, u8 pin, u8 data);

/* from saa7146_video.c */
extern struct saa7146_use_ops saa7146_video_uops;
int saa7146_start_preview(struct saa7146_fh *fh);
int saa7146_stop_preview(struct saa7146_fh *fh);

/* from saa7146_vbi.c */
extern struct saa7146_use_ops saa7146_vbi_uops;

/* saa7146 source inputs */
#define SAA7146_HPS_SOURCE_PORT_A       0x00
#define SAA7146_HPS_SOURCE_PORT_B       0x01
#define SAA7146_HPS_SOURCE_YPB_CPA      0x02
#define SAA7146_HPS_SOURCE_YPA_CPB      0x03

/* sync inputs */
#define SAA7146_HPS_SYNC_PORT_A         0x00
#define SAA7146_HPS_SYNC_PORT_B         0x01

/* some memory sizes */
#define SAA7146_CLIPPING_MEM    (14*PAGE_SIZE)

/* some defines for the various clipping-modes */
#define SAA7146_CLIPPING_RECT           0x4
#define SAA7146_CLIPPING_RECT_INVERTED  0x5
#define SAA7146_CLIPPING_MASK           0x6
#define SAA7146_CLIPPING_MASK_INVERTED  0x7

/* output formats: each entry holds four informations */
#define RGB08_COMPOSED  0x0217 /* composed is used in the sense of "not-planar" */
/* this means: planar?=0, yuv2rgb-conversation-mode=2, dither=yes(=1), format-mode = 7 */
#define RGB15_COMPOSED  0x0213
#define RGB16_COMPOSED  0x0210
#define RGB24_COMPOSED  0x0201
#define RGB32_COMPOSED  0x0202

#define Y8                      0x0006
#define YUV411_COMPOSED         0x0003
#define YUV422_COMPOSED         0x0000
/* this means: planar?=1, yuv2rgb-conversion-mode=0, dither=no(=0), format-mode = b */
#define YUV411_DECOMPOSED       0x100b
#define YUV422_DECOMPOSED       0x1009
#define YUV420_DECOMPOSED       0x100a

#define IS_PLANAR(x) (x & 0xf000)

/* misc defines */
#define SAA7146_NO_SWAP         (0x0)
#define SAA7146_TWO_BYTE_SWAP   (0x1)
#define SAA7146_FOUR_BYTE_SWAP  (0x2)

#endif