/* * 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 int  ng_debug;extern int  ng_log_bad_stream;extern int  ng_log_resync;extern int  ng_chromakey;extern int  ng_ratio_x;extern int  ng_ratio_y;extern char ng_v4l_conf[256];extern int  ng_jpeg_quality;extern int  ng_mpeg_vpid;extern int  ng_mpeg_apid;#undef BUG_ON#undef BUG#define BUG_ON(condition,message,arg...)	if (condition) {\	fprintf(stderr,"BUG: " message " [%s:%s:%d]\n",\		## arg, __FILE__, __FUNCTION__, __LINE__);\	abort();}#define BUG(message,arg...)	if (1) {\	fprintf(stderr,"BUG: " message " [%s:%s:%d]\n",\		## arg, __FILE__, __FUNCTION__, __LINE__);\	abort();}#define OOPS_ON(condition,message,arg...)	if (condition) {\	fprintf(stderr,"Oops: " message " [%s:%s:%d]\n",\		## arg, __FILE__, __FUNCTION__, __LINE__);}#define OOPS(message,arg...)	if (1) {\	fprintf(stderr,"Oops: " message " [%s:%s:%d]\n",\		## arg, __FILE__, __FUNCTION__, __LINE__);}#if !defined(__cplusplus)  &&  __STDC_VERSION__ < 199901# undef bool# define bool int#endif#if __STDC_VERSION__ < 199901# define restrict#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_MPEG	    19  /* MPEG1/2 */#define VIDEO_FMT_COUNT	    20#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#define CAN_MPEG_PS         16#define CAN_MPEG_TS         32#define MPEG_FLAGS_PS        1#define MPEG_FLAGS_TS        2/* --------------------------------------------------------------------- */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;    char *str;};struct OVERLAY_CLIP {    int x1,x2,y1,y2;};/* fwd decl */struct ng_devinfo;struct ng_devstate;/* --------------------------------------------------------------------- *//* video data structures                                                 */struct ng_video_fmt {    unsigned int   fmtid;         /* VIDEO_* */    unsigned int   width;    unsigned int   height;    unsigned int   bytesperline;  /* zero for compressed formats */};enum ng_video_frame {    NG_FRAME_UNKNOWN  = 0,    NG_FRAME_I_FRAME  = 1,    NG_FRAME_P_FRAME  = 2,    NG_FRAME_B_FRAME  = 3,};enum ng_video_ratio {    // same numbers mpeg2 uses    NG_RATIO_UNSPEC = 0,    NG_RATIO_SQUARE = 1,    NG_RATIO_3_4    = 2,    NG_RATIO_9_16   = 3,    NG_RATIO_2dot21 = 4,};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                 file_seq;	int                 play_seq;	int                 twice;	enum ng_video_frame frame;	enum ng_video_ratio ratio;	int                 broken;	int                 slowdown;    } 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;};struct ng_video_fifo {    struct list_head     next;    struct ng_video_buf  *buf;};void ng_init_video_buf(struct ng_video_buf *buf);void ng_release_video_buf(struct ng_video_buf *buf);void ng_print_video_buf(char *tag, struct ng_video_buf *buf);void ng_copy_video_buf(struct ng_video_buf *dst, struct ng_video_buf *src);struct ng_video_buf* ng_malloc_video_buf(void *handle, struct ng_video_fmt *fmt);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;	int              broken;	int              slowdown;    } info;};struct ng_audio_buf* ng_malloc_audio_buf(struct ng_audio_fmt *fmt,					 int size);void ng_free_audio_buf(struct ng_audio_buf *buf);/* --------------------------------------------------------------------- *//* someone who receives video and/or audio data (writeavi, ...)          */struct ng_format_list {    char           *name;    char           *desc;  /* if standard fmtid description doesn't work			      because it's converted somehow */    char           *ext;    unsigned int   fmtid;    void           *priv;};struct ng_writer {    const char *name;    const char *desc;    const struct ng_format_list *video;    const struct ng_format_list *audio;    const int combined; /* both audio + video in one file */    void* (*wr_open)(char *moviename, char *audioname,		     struct ng_video_fmt *video, const void *priv_video, int fps,		     struct ng_audio_fmt *audio, const void *priv_audio);    int (*wr_video)(void *handle, struct ng_video_buf *buf);    int (*wr_audio)(void *handle, struct ng_audio_buf *buf);    int (*wr_close)(void *handle);    struct list_head list;};struct ng_reader {    const char *name;    const char *desc;    char  *magic[8];    int   moff[8];    int   mlen[8];    void* (*rd_open)(char *moviename);    struct ng_video_fmt* (*rd_vfmt)(void *handle, int *vfmt, int vn);    struct ng_audio_fmt* (*rd_afmt)(void *handle);    struct ng_video_buf* (*rd_vdata)(void *handle, unsigned int *drop);    struct ng_audio_buf* (*rd_adata)(void *handle);    int64_t (*frame_time)(void *handle);    int (*rd_close)(void *handle);    struct list_head list;};/* --------------------------------------------------------------------- *//* attributes                                                            */struct ng_attribute {    /* attribute name + identity */    int                  id;    int                  priority;    const char           *name;    const char           *group;    /* attribute properties */    int                  type;    int                  defval;    struct STRTAB        *choices;    /* ATTR_TYPE_CHOICE  */    int                  min,max;     /* ATTR_TYPE_INTEGER */    int                  points;      /* ATTR_TYPE_INTEGER -- fixed point */    int         (*read)(struct ng_attribute*);    void        (*write)(struct ng_attribute*, int val);    /* attribute owner's data */    void                 *handle;    const void           *priv;        /* attribute user's data */    struct list_head     device_list;    struct ng_devstate   *dev;    struct list_head     global_list;    void                 *app;};struct ng_attribute* ng_attr_byid(struct ng_devstate *dev, int id);struct ng_attribute* ng_attr_byname(struct ng_devstate *dev, 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);