/* --------------------------------------------------------------------- */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 0struct 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))#endifextern 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: */