grab-ng.h

It s a tool designed to extract as much information as possible from Bluetooth devices without the r

/* --------------------------------------------------------------------- */

void ng_ratio_fixup(int *width, int *height, int *xoff, int *yoff);
void ng_ratio_fixup2(int *width, int *height, int *xoff, int *yoff,
		     int ratio_x, int ratio_y, int up);

/* --------------------------------------------------------------------- */
/* capture/overlay + sound interface drivers                             */

struct ng_vid_driver {
    const char *name;
    int priority;

    /* open/close */
    struct ng_devinfo* (*probe)(int debug);
    void*  (*init)(char *device);
    int    (*open)(void *handle);
    int    (*close)(void *handle);
    int    (*fini)(void *handle);
    char*  (*devname)(void *handle);
    char*  (*busname)(void *handle);

    /* attributes */
    int   (*capabilities)(void *handle);
    struct ng_attribute* (*list_attrs)(void *handle);

#if 0
    /* overlay */
    int   (*setupfb)(void *handle, struct ng_video_fmt *fmt, void *base);
    int   (*overlay)(void *handle, struct ng_video_fmt *fmt, int x, int y,
		     struct OVERLAY_CLIP *oc, int count, int aspect);
#else
    int   (*overlay)(void *handle,  int enable, int aspect,
		     long window, int dw, int dh);
#endif
    
    /* capture */
    int   (*setformat)(void *handle, struct ng_video_fmt *fmt);
    int   (*startvideo)(void *handle, int fps, unsigned int buffers);
    void  (*stopvideo)(void *handle);
    struct ng_video_buf* (*nextframe)(void *handle); /* video frame  */
    struct ng_video_buf* (*getimage)(void *handle);  /* single image */

    /* read MPEG stream */
    char* (*setup_mpeg)(void *handle, int flags);

    /* tuner */
    unsigned long (*getfreq)(void *handle);
    void  (*setfreq)(void *handle, unsigned long freq);
    int   (*is_tuned)(void *handle);

    struct list_head list;
};

struct ng_dsp_driver {
    const char            *name;
    int priority;

    /* open/close */
    struct ng_devinfo*    (*probe)(int record, int debug);
    void*                 (*init)(char *device, int record);
    int                   (*open)(void *handle);
    int                   (*close)(void *handle);
    int                   (*fini)(void *handle);
    char*                 (*devname)(void *handle);

    /* record/playback */
    int                   (*setformat)(void *handle, struct ng_audio_fmt *fmt);
    int                   (*fd)(void *handle);
    int                   (*startrec)(void *handle);
    int                   (*startplay)(void *handle);
    struct ng_audio_buf*  (*read)(void *handle, int64_t stopby);
    struct ng_audio_buf*  (*write)(void *handle, struct ng_audio_buf *buf);
    int64_t               (*latency)(void *handle);

    struct list_head      list;
};

struct ng_mix_driver {
    const char            *name;
    int priority;

    struct ng_devinfo*    (*probe)(int debug);
    struct ng_devinfo*    (*channels)(char *device);
    void*                 (*init)(char *device, char *control);
    int                   (*open)(void *handle);
    int                   (*close)(void *handle);
    int                   (*fini)(void *handle);
    char*                 (*devname)(void *handle);

    struct ng_attribute*  (*list_attrs)(void *handle);
    struct list_head      list;
};

struct ng_devinfo {
    char  device[32];
    char  name[32];
    char  bus[32];
    int   flags;
};

struct ng_devstate {
    enum {
	NG_DEV_NONE  = 0,
	NG_DEV_VIDEO = 1,
	NG_DEV_DSP   = 2,
	NG_DEV_MIX   = 3,
    } type;
    union {
	struct ng_vid_driver  *v;
	struct ng_dsp_driver  *a;
	struct ng_mix_driver  *m;
    };
    char                      *device;
    void                      *handle;
    struct list_head          attrs;
    int                       flags;
    int                       refcount;
};

/* --------------------------------------------------------------------- */
/* frame processing (color space conversion / compression / filtering)   */

typedef struct ng_video_buf* (*ng_get_video_buf)
	(void *handle, struct ng_video_fmt *fmt);
typedef struct ng_audio_buf* (*ng_get_audio_buf)
	(void *handle);

enum ng_process_mode {
    NG_MODE_UNDEF   = 0,
    NG_MODE_TRIVIAL = 1,
    NG_MODE_COMPLEX = 2,
};

struct ng_video_process {
    enum ng_process_mode mode;

    /* trivial filters -- one frame in, one frame out */
    void   (*frame)(void *handle,
		    struct ng_video_buf *out,
		    struct ng_video_buf *in);
    
    /* complex filters -- anything trivial can't handle */
    void (*setup)(void *handle, ng_get_video_buf get, void *ghandle);
    void (*put_frame)(void *handle, struct ng_video_buf* buf);
    struct ng_video_buf* (*get_frame)(void *handle);

    /* cleanup */
    void (*fini)(void *handle);
};

struct ng_video_conv {
    void*                     (*init)(struct ng_video_fmt *out,
				      void *priv);
    struct ng_video_process   p;

    unsigned int              fmtid_in;
    unsigned int              fmtid_out;
    void                      *priv;

    struct list_head          list;
};

struct ng_video_filter {
    void*                     (*init)(struct ng_video_fmt *fmt);
    struct ng_video_process   p;

    char                      *name;
    int                       fmts;
    struct ng_attribute*      attrs;

    struct list_head          list;
};

struct ng_process_handle;

struct ng_process_handle* ng_conv_init(struct ng_video_conv *conv,
				       struct ng_video_fmt *i,
				       struct ng_video_fmt *o);
struct ng_process_handle* ng_filter_init(struct ng_video_filter *filter,
					 struct ng_video_fmt *fmt);
void ng_process_setup(struct ng_process_handle*, ng_get_video_buf get, void *ghandle);
void ng_process_put_frame(struct ng_process_handle*, struct ng_video_buf*);
struct ng_video_buf* ng_process_get_frame(struct ng_process_handle*);
void ng_process_fini(struct ng_process_handle*);

#if 0

struct ng_convert_handle* ng_convert_alloc(struct ng_video_conv *conv,
					   struct ng_video_fmt *i,
					   struct ng_video_fmt *o);
void ng_convert_init(struct ng_convert_handle *h);
struct ng_video_buf* ng_convert_frame(struct ng_convert_handle *h,
				      struct ng_video_buf *dest,
				      struct ng_video_buf *buf);
void ng_convert_fini(struct ng_convert_handle *h);
struct ng_video_buf* ng_convert_single(struct ng_convert_handle *h,
				       struct ng_video_buf *in);

#endif

/* --------------------------------------------------------------------- */
/* audio converters                                                      */

struct ng_audio_conv {
    unsigned int          fmtid_in;
    unsigned int          fmtid_out;
    void*                 (*init)(void *priv);
    struct ng_audio_buf*  (*data)(void *handle,
				  struct ng_audio_buf *in);
    void                  (*fini)(void *handle);
    void                  *priv;

    struct list_head      list;
};

/* --------------------------------------------------------------------- */

/* must be changed if we break compatibility */
#define NG_PLUGIN_MAGIC 0x20041201

#define __init __attribute__ ((constructor))
#define __fini __attribute__ ((destructor))
#ifndef __used
#define __used __attribute__ ((used))
#endif

extern struct list_head ng_conv;
extern struct list_head ng_aconv;
extern struct list_head ng_filters;
extern struct list_head ng_writers;
extern struct list_head ng_readers;
extern struct list_head ng_vid_drivers;
extern struct list_head ng_dsp_drivers;
extern struct list_head ng_mix_drivers;

int ng_conv_register(int magic, char *plugname,
		     struct ng_video_conv *list, int count);
int ng_aconv_register(int magic, char *plugname,
		      struct ng_audio_conv *list, int count);
int ng_filter_register(int magic, char *plugname,
		       struct ng_video_filter *filter);
int ng_writer_register(int magic, char *plugname,
		       struct ng_writer *writer);
int ng_reader_register(int magic, char *plugname,
		       struct ng_reader *reader);
int ng_vid_driver_register(int magic, char *plugname,
			   struct ng_vid_driver *driver);
int ng_dsp_driver_register(int magic, char *plugname,
			   struct ng_dsp_driver *driver);
int ng_mix_driver_register(int magic, char *plugname,
			   struct ng_mix_driver *driver);

struct ng_video_conv* ng_conv_find_to(unsigned int out, int *i);
struct ng_video_conv* ng_conv_find_from(unsigned int out, int *i);
struct ng_video_conv* ng_conv_find_match(unsigned int in, unsigned int out);

struct ng_devinfo* ng_vid_probe(char *driver);

int ng_vid_init(struct ng_devstate *dev, char *device);
int ng_dsp_init(struct ng_devstate *dev, char *device, int record);
int ng_mix_init(struct ng_devstate *dev, char *device, char *control);

int ng_dev_fini(struct ng_devstate *dev);
int ng_dev_open(struct ng_devstate *dev);
int ng_dev_close(struct ng_devstate *dev);
int ng_dev_users(struct ng_devstate *dev);

int ng_chardev_open(char *device, int flags, int major, int complain);

struct ng_reader* ng_find_reader_magic(char *filename);
struct ng_reader* ng_find_reader_name(char *name);
struct ng_writer* ng_find_writer_name(char *name);
int64_t ng_tofday_to_timestamp(struct timeval *tv);
int64_t ng_get_timestamp(void);
void ng_check_clipping(int width, int height, int xadjust, int yadjust,
		       struct OVERLAY_CLIP *oc, int *count);
struct ng_video_buf* ng_filter_single(struct ng_video_filter *filter,
				      struct ng_video_buf *in);

/* --------------------------------------------------------------------- */

void ng_init(void);
void ng_print_stacktrace(void);
void ng_lut_init(unsigned long red_mask, unsigned long green_mask,
		 unsigned long blue_mask, unsigned int fmtid, int swap);

void ng_rgb24_to_lut2(unsigned char *dest, unsigned char *src, int p);
void ng_rgb24_to_lut4(unsigned char *dest, unsigned char *src, int p);

/* --------------------------------------------------------------------- */
/* internal stuff starts here                                            */

#ifdef NG_PRIVATE

/* for yuv2rgb using lookup tables (color_lut.c, color_yuv2rgb.c) */
extern int32_t  ng_lut_red[256];
extern int32_t  ng_lut_green[256];
extern int32_t  ng_lut_blue[256];
void ng_yuv422_to_lut2(unsigned char *dest, unsigned char *s, int p);
void ng_yuv422_to_lut4(unsigned char *dest, unsigned char *s, int p);
void ng_yuv420p_to_lut2(void *h, struct ng_video_buf *out,
			struct ng_video_buf *in);
void ng_yuv420p_to_lut4(void *h, struct ng_video_buf *out,
			struct ng_video_buf *in);
void ng_yuv422p_to_lut2(void *h, struct ng_video_buf *out,
			struct ng_video_buf *in);
void ng_yuv422p_to_lut4(void *h, struct ng_video_buf *out,
			struct ng_video_buf *in);

void __init yuv2rgb_init(void);
void __init packed_init(void);


/* color_common.c stuff */
void* ng_packed_init(struct ng_video_fmt *out, void *priv);
void  ng_packed_frame(void *handle, struct ng_video_buf *out,
		      struct ng_video_buf *in);
void* ng_conv_nop_init(struct ng_video_fmt *out, void *priv);
void  ng_conv_nop_fini(void *handle);

#define NG_GENERIC_PACKED			\
	.init         = ng_packed_init,		\
	.p.mode       = NG_MODE_TRIVIAL,       	\
	.p.frame      = ng_packed_frame,       	\
	.p.fini       = ng_conv_nop_fini

#endif /* NG_PRIVATE */

/* --------------------------------------------------------------------- */
/*
 * Local variables:
 * compile-command: "(cd ..; make)"
 * End:
 */