struct ng_attribute* ng_attr_byid(struct ng_attribute *attrs, int id);struct ng_attribute* ng_attr_byname(struct ng_attribute *attrs, char *name);const char* ng_attr_getstr(struct ng_attribute *attr, int value);int ng_attr_getint(struct ng_attribute *attr, char *value);void ng_attr_listchoices(struct ng_attribute *attr);int ng_attr_int2percent(struct ng_attribute *attr, int value);int ng_attr_percent2int(struct ng_attribute *attr, int percent);int ng_attr_parse_int(struct ng_attribute *attr, char *str);/* --------------------------------------------------------------------- */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);/* --------------------------------------------------------------------- *//* device informations                                                   */struct ng_devinfo {    char  device[32];    char  name[64];    int   flags;};/* --------------------------------------------------------------------- *//* capture/overlay interface driver                                      */struct ng_vid_driver {    const char *name;    /* open/close */    void*  (*open)(char *device);    int    (*close)(void *handle);    /* attributes */    char* (*get_devname)(void *handle);    int   (*capabilities)(void *handle);    struct ng_attribute* (*list_attrs)(void *handle);        /* 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);        /* 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 */    /* tuner */    unsigned long (*getfreq)(void *handle);    void  (*setfreq)(void *handle, unsigned long freq);    int   (*is_tuned)(void *handle);    struct list_head list;};/* --------------------------------------------------------------------- *//* sound driver                                                          */struct ng_dsp_driver {    const char            *name;    void*                 (*open)(char *device, struct ng_audio_fmt *fmt,				  int record);    void                  (*close)(void *handle);    int                   (*fd)(void *handle);    int                   (*startrec)(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;    struct ng_devinfo*    (*probe)(void);    struct ng_devinfo*    (*channels)(char *device);    void*                 (*open)(char *device);    struct ng_attribute*  (*volctl)(void *handle, char *channel);    void                  (*close)(void *handle);    struct list_head      list;};/* --------------------------------------------------------------------- *//* color space converters                                                */struct ng_video_conv {    unsigned int          fmtid_in;    unsigned int          fmtid_out;    void*                 (*init)(struct ng_video_fmt *out,				  void *priv);    void                  (*frame)(void *handle,				   struct ng_video_buf *out,				   struct ng_video_buf *in);    void                  (*fini)(void *handle);    void                  *priv;    struct list_head      list;};struct ng_convert_handle {    struct ng_video_fmt     ifmt;    struct ng_video_fmt     ofmt;    int                     isize;    int                     osize;    struct ng_video_conv    *conv;    void                    *chandle;};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);/* --------------------------------------------------------------------- *//* audio converters                                                      */struct ng_audio_conv {    unsigned int          fmtid_in;    unsigned int          fmtid_out;    void*                 (*init)(void *priv);    struct ng_audio_buf*  (*frame)(void *handle,				   struct ng_audio_buf *in);    void                  (*fini)(void *handle);    void                  *priv;    struct list_head      list;};/* --------------------------------------------------------------------- *//* filters                                                               */struct ng_filter {    char                  *name;    int                   fmts;    struct ng_attribute*  attrs;    void*                 (*init)(struct ng_video_fmt *fmt);    struct ng_video_buf*  (*frame)(void *handle,				   struct ng_video_buf *in);    void                  (*fini)(void *handle);    struct list_head      list;};/* --------------------------------------------------------------------- *//* must be changed if we break compatibility */#define NG_PLUGIN_MAGIC 0x20030129extern 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_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);const struct ng_vid_driver* ng_vid_open(char *device, char *driver,					struct ng_video_fmt *screen,					void *base, void **handle);const struct ng_dsp_driver* ng_dsp_open(char *device, struct ng_audio_fmt *fmt,					int record, void **handle);struct ng_attribute* ng_mix_init(char *device, char *channel);struct ng_reader* ng_find_reader(char *filename);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_filter *filter,				      struct ng_video_buf *in);/* --------------------------------------------------------------------- *///Qiao,2003.6.25,remove this function//void ng_init(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/* init functions */void ng_color_packed_init(void);void ng_color_yuv2rgb_init(void);void ng_writefile_init(void);/* for yuv2rgb using lookup tables (color_lut.c, color_yuv2rgb.c) */unsigned long   ng_lut_red[256];unsigned long   ng_lut_green[256];unsigned long   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);/* 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,		\	frame:          ng_packed_frame,       	\	fini:           ng_conv_nop_fini#endif /* NG_PRIVATE *//* --------------------------------------------------------------------- *//* * Local variables: * compile-command: "(cd ..; make)" * End: */