/* * next generation[tm] xawtv capture interfaces * * (c) 2001-03 Gerd Knorr <kraxel@bytesex.org> * */#include <pthread.h>#include <sys/types.h>//#include "devices.h"//#include "list.h"extern struct ng_vid_driver v4l_driver;extern int  ng_debug;extern int  ng_chromakey;extern int  ng_jpeg_quality;extern int  ng_ratio_x;extern int  ng_ratio_y;extern char ng_v4l_conf[256];#define BUG_ON(condition,message)	if (condition) {\	fprintf(stderr,"BUG: %s [%s:%d]\n",\		message,__FILE__,__LINE__);\	exit(1);}#if __STDC_VERSION__ < 199901# define restrict# define bool int#endif#define UNSET          (-1U)#define DIMOF(array)   (sizeof(array)/sizeof(array[0]))#define SDIMOF(array)  ((signed int)(sizeof(array)/sizeof(array[0])))#define GETELEM(array,index,default) \	(index < sizeof(array)/sizeof(array[0]) ? array[index] : default)/* --------------------------------------------------------------------- *//* defines                                                               */#define VIDEO_NONE           0#define VIDEO_RGB08          1  /* bt848 dithered */#define VIDEO_GRAY           2#define VIDEO_RGB15_LE       3  /* 15 bpp little endian */#define VIDEO_RGB16_LE       4  /* 16 bpp little endian */#define VIDEO_RGB15_BE       5  /* 15 bpp big endian */#define VIDEO_RGB16_BE       6  /* 16 bpp big endian */#define VIDEO_BGR24          7  /* bgrbgrbgrbgr (LE) */#define VIDEO_BGR32          8  /* bgr-bgr-bgr- (LE) */#define VIDEO_RGB24          9  /* rgbrgbrgbrgb (BE) */#define VIDEO_RGB32         10  /* -rgb-rgb-rgb (BE) */#define VIDEO_LUT2          11  /* lookup-table 2 byte depth */#define VIDEO_LUT4          12  /* lookup-table 4 byte depth */#define VIDEO_YUYV	    13  /* 4:2:2 */#define VIDEO_YUV422P       14  /* YUV 4:2:2 (planar) */#define VIDEO_YUV420P	    15  /* YUV 4:2:0 (planar) */#define VIDEO_MJPEG	    16  /* MJPEG (AVI) */#define VIDEO_JPEG	    17  /* JPEG (JFIF) */#define VIDEO_UYVY	    18  /* 4:2:2 */#define VIDEO_FMT_COUNT	    19#define AUDIO_NONE           0#define AUDIO_U8_MONO        1#define AUDIO_U8_STEREO      2#define AUDIO_S16_LE_MONO    3#define AUDIO_S16_LE_STEREO  4#define AUDIO_S16_BE_MONO    5#define AUDIO_S16_BE_STEREO  6#define AUDIO_MP3            7#define AUDIO_FMT_COUNT      8#if BYTE_ORDER == BIG_ENDIAN# define AUDIO_S16_NATIVE_MONO   AUDIO_S16_BE_MONO# define AUDIO_S16_NATIVE_STEREO AUDIO_S16_BE_STEREO# define VIDEO_RGB15_NATIVE      VIDEO_RGB15_BE# define VIDEO_RGB16_NATIVE      VIDEO_RGB16_BE#endif#if BYTE_ORDER == LITTLE_ENDIAN# define AUDIO_S16_NATIVE_MONO   AUDIO_S16_LE_MONO# define AUDIO_S16_NATIVE_STEREO AUDIO_S16_LE_STEREO# define VIDEO_RGB15_NATIVE      VIDEO_RGB15_LE# define VIDEO_RGB16_NATIVE      VIDEO_RGB16_LE#endif#define ATTR_TYPE_INTEGER    1   /*  range 0 - 65535  */#define ATTR_TYPE_CHOICE     2   /*  multiple choice  */#define ATTR_TYPE_BOOL       3   /*  yes/no           */#define ATTR_ID_NORM         1#define ATTR_ID_INPUT        2#define ATTR_ID_VOLUME       3#define ATTR_ID_MUTE         4#define ATTR_ID_AUDIO_MODE   5#define ATTR_ID_COLOR        6#define ATTR_ID_BRIGHT       7#define ATTR_ID_HUE          8#define ATTR_ID_CONTRAST     9#define ATTR_ID_COUNT       10#define CAN_OVERLAY          1#define CAN_CAPTURE          2#define CAN_TUNE             4#define NEEDS_CHROMAKEY      8/* --------------------------------------------------------------------- */extern const unsigned int   ng_vfmt_to_depth[VIDEO_FMT_COUNT];extern const char*          ng_vfmt_to_desc[VIDEO_FMT_COUNT];extern const unsigned int   ng_afmt_to_channels[AUDIO_FMT_COUNT];extern const unsigned int   ng_afmt_to_bits[AUDIO_FMT_COUNT];extern const char*          ng_afmt_to_desc[AUDIO_FMT_COUNT];extern const char*          ng_attr_to_desc[ATTR_ID_COUNT];/* --------------------------------------------------------------------- */struct STRTAB {    long nr;    const char *str;};struct OVERLAY_CLIP {    int x1,x2,y1,y2;};/* --------------------------------------------------------------------- *//* video data structures                                                 */struct ng_video_fmt {    unsigned int   fmtid;         /* VIDEO_* */    unsigned int   width;    unsigned int   height;    unsigned int   bytesperline;  /* zero for compressed formats */};struct ng_video_buf {    struct ng_video_fmt  fmt;    size_t               size;    unsigned char        *data;    /* meta info for frame */    struct {	int64_t          ts;      /* time stamp */	int              seq;	int              twice;    } info;    /*     * the lock is for the reference counter.     * if the reference counter goes down to zero release()     * should be called.  priv is for the owner of the     * buffer (can be used by the release callback)     */    pthread_mutex_t      lock;    pthread_cond_t       cond;    int                  refcount;    void                 (*release)(struct ng_video_buf *buf);    void                 *priv;};void ng_init_video_buf(struct ng_video_buf *buf);void ng_release_video_buf(struct ng_video_buf *buf);struct ng_video_buf* ng_malloc_video_buf(struct ng_video_fmt *fmt,					 int size);void ng_wakeup_video_buf(struct ng_video_buf *buf);void ng_waiton_video_buf(struct ng_video_buf *buf);/* --------------------------------------------------------------------- *//* audio data structures                                                 */struct ng_audio_fmt {    unsigned int   fmtid;         /* AUDIO_* */    unsigned int   rate;};struct ng_audio_buf {    struct ng_audio_fmt  fmt;    int                  size;    int                  written; /* for partial writes */    char                 *data;    struct {	int64_t          ts;    } info;};struct ng_audio_buf* ng_malloc_audio_buf(struct ng_audio_fmt *fmt,					 int size);/* --------------------------------------------------------------------- *//* attributes                                                            */struct ng_attribute {    int                  id;    const char           *name;    int                  type;    int                  defval;    struct STRTAB        *choices;    /* ATTR_TYPE_CHOICE  */    int                  min,max;     /* ATTR_TYPE_INTEGER */    int                  points;      /* ATTR_TYPE_INTEGER -- fixed point */    const void           *priv;    void                 *handle;    int         (*read)(struct ng_attribute*);    void        (*write)(struct ng_attribute*, int val);};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);};/* --------------------------------------------------------------------- *//* * Local variables: * compile-command: "(cd ..; make)" * End: */