#ifndef AVILIB_H#define AVILIB_Htypedef struct{   long pos;   long len;} video_index_entry;typedef struct{   long pos;   long len;   long tot;} audio_index_entry;typedef struct{   long   fdes;              /* File descriptor of AVI file */   long   mode;              /* 0 for reading, 1 for writing */   long   width;             /* Width  of a video frame */   long   height;            /* Height of a video frame */   double fps;               /* Frames per second */   char   compressor[8];     /* Type of compressor, 4 bytes + padding for 0 byte */   long   video_strn;        /* Video stream number */   long   video_frames;      /* Number of video frames */   char   video_tag[4];      /* Tag of video data */   long   video_pos;         /* Number of next frame to be read                                (if index present) */   long   a_fmt;             /* Audio format, see #defines below */   long   a_chans;           /* Audio channels, 0 for no audio */   long   a_rate;            /* Rate in Hz */   long   a_bits;            /* bits per audio sample */   long   audio_strn;        /* Audio stream number */   long   audio_bytes;       /* Total number of bytes of audio data */   long   audio_chunks;      /* Chunks of audio data in the file */   char   audio_tag[4];      /* Tag of audio data */   long   audio_posc;        /* Audio position: chunk */   long   audio_posb;        /* Audio position: byte within chunk */   long   pos;               /* position in file */   long   n_idx;             /* number of index entries actually filled */   long   max_idx;           /* number of index entries actually allocated */   unsigned char (*idx)[16]; /* index entries (AVI idx1 tag) */   video_index_entry * video_index;   audio_index_entry * audio_index;   long   last_pos;          /* Position of last frame written */   long   last_len;          /* Length of last frame written */   int    must_use_index;    /* Flag if frames are duplicated */   long   movi_start;} avi_t;#define AVI_MODE_WRITE  0#define AVI_MODE_READ   1/* The error codes delivered by avi_open_input_file */#define AVI_ERR_SIZELIM      1     /* The write of the data would exceed                                      the maximum size of the AVI file.                                      This is more a warning than an error                                      since the file may be closed safely */#define AVI_ERR_OPEN         2     /* Error opening the AVI file - wrong path                                      name or file nor readable/writable */#define AVI_ERR_READ         3     /* Error reading from AVI File */#define AVI_ERR_WRITE        4     /* Error writing to AVI File,                                      disk full ??? */#define AVI_ERR_WRITE_INDEX  5     /* Could not write index to AVI file                                      during close, file may still be                                      usable */#define AVI_ERR_CLOSE        6     /* Could not write header to AVI file                                      or not truncate the file during close,                                      file is most probably corrupted */#define AVI_ERR_NOT_PERM     7     /* Operation not permitted:                                      trying to read from a file open                                      for writing or vice versa */#define AVI_ERR_NO_MEM       8     /* malloc failed */#define AVI_ERR_NO_AVI       9     /* Not an AVI file */#define AVI_ERR_NO_HDRL     10     /* AVI file has no has no header list,                                      corrupted ??? */#define AVI_ERR_NO_MOVI     11     /* AVI file has no has no MOVI list,                                      corrupted ??? */#define AVI_ERR_NO_VIDS     12     /* AVI file contains no video data */#define AVI_ERR_NO_IDX      13     /* The file has been opened with                                      getIndex==0, but an operation has been                                      performed that needs an index *//* Possible Audio formats */#define WAVE_FORMAT_UNKNOWN             (0x0000)#define WAVE_FORMAT_PCM                 (0x0001)#define WAVE_FORMAT_ADPCM               (0x0002)#define WAVE_FORMAT_IBM_CVSD            (0x0005)#define WAVE_FORMAT_ALAW                (0x0006)#define WAVE_FORMAT_MULAW               (0x0007)#define WAVE_FORMAT_OKI_ADPCM           (0x0010)#define WAVE_FORMAT_DVI_ADPCM           (0x0011)#define WAVE_FORMAT_DIGISTD             (0x0015)#define WAVE_FORMAT_DIGIFIX             (0x0016)#define WAVE_FORMAT_YAMAHA_ADPCM        (0x0020)#define WAVE_FORMAT_DSP_TRUESPEECH      (0x0022)#define WAVE_FORMAT_GSM610              (0x0031)#define IBM_FORMAT_MULAW                (0x0101)#define IBM_FORMAT_ALAW                 (0x0102)#define IBM_FORMAT_ADPCM                (0x0103)avi_t* AVI_open_output_file(char * filename);void AVI_set_video(avi_t *AVI, int width, int height, double fps, char *compressor);void AVI_set_audio(avi_t *AVI, int channels, long rate, int bits, int format);int  AVI_write_frame(avi_t *AVI, char *data, long bytes);int  AVI_dup_frame(avi_t *AVI);int  AVI_write_audio(avi_t *AVI, char *data, long bytes);long AVI_bytes_remain(avi_t *AVI);int  AVI_close(avi_t *AVI);avi_t *AVI_open_input_file(char *filename, int getIndex);long AVI_video_frames(avi_t *AVI);int  AVI_video_width(avi_t *AVI);int  AVI_video_height(avi_t *AVI);double AVI_frame_rate(avi_t *AVI);char* AVI_video_compressor(avi_t *AVI);int  AVI_audio_channels(avi_t *AVI);int  AVI_audio_bits(avi_t *AVI);int  AVI_audio_format(avi_t *AVI);long AVI_audio_rate(avi_t *AVI);long AVI_audio_bytes(avi_t *AVI);long AVI_frame_size(avi_t *AVI, long frame);long AVI_chunk_size(avi_t *AVI, long frame);int  AVI_seek_start(avi_t *AVI);int  AVI_set_video_position(avi_t *AVI, long frame);long AVI_read_frame(avi_t *AVI, char *vidbuf);int  AVI_set_audio_position(avi_t *AVI, long byte);long AVI_read_audio(avi_t *AVI, char *audbuf, long bytes);int  AVI_read_data(avi_t *AVI, char *vidbuf, long max_vidbuf,                               char *audbuf, long max_audbuf,                               long *len);void AVI_print_error(char *str);char *AVI_strerror();char *AVI_syserror();#endif