Details | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4973 | right-hear | 1 | /* ----------------------------- MNI Header ----------------------------------- |
| 2 | @NAME : mpeg.h |
||
| 3 | @INPUT : |
||
| 4 | @OUTPUT : |
||
| 5 | @RETURNS : |
||
| 6 | @DESCRIPTION: Types and function prototypes needed for applications to |
||
| 7 | use the Berkely MPEG decoding engine via the MNI front |
||
| 8 | end. |
||
| 9 | @METHOD : |
||
| 10 | @GLOBALS : Types defined: |
||
| 11 | ImageDesc - structure giving height, width, etc. |
||
| 12 | DitherEnum - the different dither types supported by |
||
| 13 | the decoding engine |
||
| 14 | @CALLS : |
||
| 15 | @CREATED : Greg Ward, 94/6/16. |
||
| 16 | @MODIFIED : Greg Ward, 94/9/12 (based on John Cristy's fixes): made |
||
| 17 | more amenable to use with other libraries that also |
||
| 18 | happen to define TRUE, FALSE, [Bb]oolean, and added |
||
| 19 | PROTO macro |
||
| 20 | ---------------------------------------------------------------------------- */ |
||
| 21 | |||
| 22 | #ifndef __MPEG_H |
||
| 23 | #define __MPEG_H |
||
| 24 | |||
| 25 | #include |
||
| 26 | |||
| 27 | /* An attempt at a portable and integrable boolean type... */ |
||
| 28 | |||
| 29 | #if (!defined(TRUE) || !defined(FALSE)) |
||
| 30 | # define TRUE 1 |
||
| 31 | # define FALSE 0 |
||
| 32 | #endif |
||
| 33 | |||
| 34 | #if (!defined (BOOLEAN_TYPE_EXISTS)) |
||
| 35 | typedef unsigned int Boolean; |
||
| 36 | #endif |
||
| 37 | |||
| 38 | typedef struct |
||
| 39 | { |
||
| 40 | short red, green, blue; |
||
| 41 | } ColormapEntry; |
||
| 42 | |||
| 43 | typedef struct |
||
| 44 | { |
||
| 45 | int Height; /* in pixels */ |
||
| 46 | int Width; |
||
| 47 | int Depth; /* image depth (bits) */ |
||
| 48 | int PixelSize; /* bits actually stored per pixel */ |
||
| 49 | int Size; /* bytes for whole image */ |
||
| 50 | int BitmapPad; /* "quantum" of a scanline -- each scanline */ |
||
| 51 | /* starts on an even interval of this */ |
||
| 52 | /* many bits */ |
||
| 53 | int PictureRate; /* required number of frames/sec [?] */ |
||
| 54 | int BitRate; /* ??? */ |
||
| 55 | |||
| 56 | int ColormapSize; |
||
| 57 | ColormapEntry *Colormap; /* an array of ColormapSize entries */ |
||
| 58 | } ImageDesc; |
||
| 59 | |||
| 60 | typedef enum |
||
| 61 | { |
||
| 62 | HYBRID_DITHER, |
||
| 63 | HYBRID2_DITHER, |
||
| 64 | FS4_DITHER, |
||
| 65 | FS2_DITHER, |
||
| 66 | FS2FAST_DITHER, |
||
| 67 | Twox2_DITHER, |
||
| 68 | GRAY_DITHER, |
||
| 69 | FULL_COLOR_DITHER, |
||
| 70 | NO_DITHER, |
||
| 71 | ORDERED_DITHER, |
||
| 72 | MONO_DITHER, |
||
| 73 | MONO_THRESHOLD, |
||
| 74 | ORDERED2_DITHER, |
||
| 75 | MBORDERED_DITHER |
||
| 76 | } DitherEnum; |
||
| 77 | |||
| 78 | |||
| 79 | typedef enum |
||
| 80 | { |
||
| 81 | MPEG_DITHER, |
||
| 82 | MPEG_QUIET, |
||
| 83 | MPEG_LUM_RANGE, |
||
| 84 | MPEG_CR_RANGE, |
||
| 85 | MPEG_CB_RANGE, |
||
| 86 | MPEG_CMAP_INDEX |
||
| 87 | } MPEGOptionEnum; |
||
| 88 | |||
| 89 | #ifdef __cplusplus |
||
| 90 | extern "C" { |
||
| 91 | #endif |
||
| 92 | |||
| 93 | /* |
||
| 94 | * Kludge so we can compile under ANSI or K&R. (This only means |
||
| 95 | * that programs that *use* mpeg_lib can be compiled with K&R; |
||
| 96 | * the library itself must be compiled with an ANSI compiler. |
||
| 97 | * Mixing and matching compilers, BTW, is not a good idea...) |
||
| 98 | */ |
||
| 99 | #undef PROTO |
||
| 100 | #if __STDC__ || __cplusplus |
||
| 101 | #define PROTO(formal_parameters) formal_parameters |
||
| 102 | #else |
||
| 103 | #define const |
||
| 104 | #define PROTO(formal_parameters) () |
||
| 105 | #endif |
||
| 106 | |||
| 107 | /* Function prototypes (all are defined in wrapper.c) */ |
||
| 108 | |||
| 109 | Boolean OpenMPEG PROTO((FILE *MPEGfile, ImageDesc *ImgInfo)); |
||
| 110 | void CloseMPEG PROTO((void)); |
||
| 111 | Boolean RewindMPEG PROTO((FILE *MPEGfile, ImageDesc *Image)); |
||
| 112 | void SetMPEGOption PROTO((MPEGOptionEnum Option, int value)); |
||
| 113 | Boolean GetMPEGFrame PROTO((char *Frame)); |
||
| 114 | |||
| 115 | #ifdef __cplusplus |
||
| 116 | } |
||
| 117 | #endif |
||
| 118 | |||
| 119 | #endif /* __MPEG_H */ |