diff options
Diffstat (limited to 'src/main/jni/giflib/gif_lib.h')
| -rw-r--r-- | src/main/jni/giflib/gif_lib.h | 307 |
1 files changed, 307 insertions, 0 deletions
diff --git a/src/main/jni/giflib/gif_lib.h b/src/main/jni/giflib/gif_lib.h new file mode 100644 index 000000000..b7aa9301d --- /dev/null +++ b/src/main/jni/giflib/gif_lib.h @@ -0,0 +1,307 @@ +/****************************************************************************** + +gif_lib.h - service library for decoding and encoding GIF images + +*****************************************************************************/ + +#ifndef _GIF_LIB_H_ +#define _GIF_LIB_H_ 1 + +#ifdef __cplusplus +extern "C" { +#endif /* __cplusplus */ + +#define GIFLIB_MAJOR 5 +#define GIFLIB_MINOR 0 +#define GIFLIB_RELEASE 5 + +#define GIF_ERROR 0 +#define GIF_OK 1 + +#include <stddef.h> +#include <stdbool.h> + +#define GIF_STAMP "GIFVER" /* First chars in file - GIF stamp. */ +#define GIF_STAMP_LEN sizeof(GIF_STAMP) - 1 +#define GIF_VERSION_POS 3 /* Version first character in stamp. */ +#define GIF87_STAMP "GIF87a" /* First chars in file - GIF stamp. */ +#define GIF89_STAMP "GIF89a" /* First chars in file - GIF stamp. */ + +typedef unsigned char GifPixelType; +typedef unsigned char *GifRowType; +typedef unsigned char GifByteType; +typedef unsigned int GifPrefixType; +typedef int GifWord; + +typedef struct GifColorType { + GifByteType Red, Green, Blue; +} GifColorType; + +typedef struct ColorMapObject { + int ColorCount; + int BitsPerPixel; + bool SortFlag; + GifColorType *Colors; /* on malloc(3) heap */ +} ColorMapObject; + +typedef struct GifImageDesc { + GifWord Left, Top, Width, Height; /* Current image dimensions. */ + bool Interlace; /* Sequential/Interlaced lines. */ + ColorMapObject *ColorMap; /* The local color map */ +} GifImageDesc; + +typedef struct ExtensionBlock { + int ByteCount; + GifByteType *Bytes; /* on malloc(3) heap */ + int Function; /* The block function code */ +#define CONTINUE_EXT_FUNC_CODE 0x00 /* continuation subblock */ +#define COMMENT_EXT_FUNC_CODE 0xfe /* comment */ +#define GRAPHICS_EXT_FUNC_CODE 0xf9 /* graphics control (GIF89) */ +#define PLAINTEXT_EXT_FUNC_CODE 0x01 /* plaintext */ +#define APPLICATION_EXT_FUNC_CODE 0xff /* application block */ +} ExtensionBlock; + +typedef struct SavedImage { + GifImageDesc ImageDesc; + GifByteType *RasterBits; /* on malloc(3) heap */ + int ExtensionBlockCount; /* Count of extensions before image */ + ExtensionBlock *ExtensionBlocks; /* Extensions before image */ +} SavedImage; + +typedef struct GifFileType { + GifWord SWidth, SHeight; /* Size of virtual canvas */ + GifWord SColorResolution; /* How many colors can we generate? */ + GifWord SBackGroundColor; /* Background color for virtual canvas */ + GifByteType AspectByte; /* Used to compute pixel aspect ratio */ + ColorMapObject *SColorMap; /* Global colormap, NULL if nonexistent. */ + int ImageCount; /* Number of current image (both APIs) */ + GifImageDesc Image; /* Current image (low-level API) */ + SavedImage *SavedImages; /* Image sequence (high-level API) */ + int ExtensionBlockCount; /* Count extensions past last image */ + ExtensionBlock *ExtensionBlocks; /* Extensions past last image */ + int Error; /* Last error condition reported */ + void *UserData; /* hook to attach user data (TVT) */ + void *Private; /* Don't mess with this! */ +} GifFileType; + +#define GIF_ASPECT_RATIO(n) ((n)+15.0/64.0) + +typedef enum { + UNDEFINED_RECORD_TYPE, + SCREEN_DESC_RECORD_TYPE, + IMAGE_DESC_RECORD_TYPE, /* Begin with ',' */ + EXTENSION_RECORD_TYPE, /* Begin with '!' */ + TERMINATE_RECORD_TYPE /* Begin with ';' */ +} GifRecordType; + +/* func type to read gif data from arbitrary sources (TVT) */ +typedef int (*InputFunc) (GifFileType *, GifByteType *, int); + +/* func type to write gif data to arbitrary targets. + * Returns count of bytes written. (MRB) + */ +typedef int (*OutputFunc) (GifFileType *, const GifByteType *, int); + +/****************************************************************************** + GIF89 structures +******************************************************************************/ + +typedef struct GraphicsControlBlock { + int DisposalMode; +#define DISPOSAL_UNSPECIFIED 0 /* No disposal specified. */ +#define DISPOSE_DO_NOT 1 /* Leave image in place */ +#define DISPOSE_BACKGROUND 2 /* Set area too background color */ +#define DISPOSE_PREVIOUS 3 /* Restore to previous content */ + bool UserInputFlag; /* User confirmation required before disposal */ + int DelayTime; /* pre-display delay in 0.01sec units */ + int TransparentColor; /* Palette index for transparency, -1 if none */ +#define NO_TRANSPARENT_COLOR -1 +} GraphicsControlBlock; + +/****************************************************************************** + GIF encoding routines +******************************************************************************/ + +/* Main entry points */ +GifFileType *EGifOpenFileName(const char *GifFileName, + const bool GifTestExistence, int *Error); +GifFileType *EGifOpenFileHandle(const int GifFileHandle, int *Error); +GifFileType *EGifOpen(void *userPtr, OutputFunc writeFunc, int *Error); +int EGifSpew(GifFileType * GifFile); +char *EGifGetGifVersion(GifFileType *GifFile); /* new in 5.x */ +int EGifCloseFile(GifFileType * GifFile); + +#define E_GIF_ERR_OPEN_FAILED 1 /* And EGif possible errors. */ +#define E_GIF_ERR_WRITE_FAILED 2 +#define E_GIF_ERR_HAS_SCRN_DSCR 3 +#define E_GIF_ERR_HAS_IMAG_DSCR 4 +#define E_GIF_ERR_NO_COLOR_MAP 5 +#define E_GIF_ERR_DATA_TOO_BIG 6 +#define E_GIF_ERR_NOT_ENOUGH_MEM 7 +#define E_GIF_ERR_DISK_IS_FULL 8 +#define E_GIF_ERR_CLOSE_FAILED 9 +#define E_GIF_ERR_NOT_WRITEABLE 10 + +/* These are legacy. You probably do not want to call them directly */ +int EGifPutScreenDesc(GifFileType *GifFile, + const int GifWidth, const int GifHeight, + const int GifColorRes, + const int GifBackGround, + const ColorMapObject *GifColorMap); +int EGifPutImageDesc(GifFileType *GifFile, + const int GifLeft, const int GifTop, + const int GifWidth, const int GifHeight, + const bool GifInterlace, + const ColorMapObject *GifColorMap); +void EGifSetGifVersion(GifFileType *GifFile, const bool gif89); +int EGifPutLine(GifFileType *GifFile, GifPixelType *GifLine, + int GifLineLen); +int EGifPutPixel(GifFileType *GifFile, const GifPixelType GifPixel); +int EGifPutComment(GifFileType *GifFile, const char *GifComment); +int EGifPutExtensionLeader(GifFileType *GifFile, const int GifExtCode); +int EGifPutExtensionBlock(GifFileType *GifFile, + const int GifExtLen, const void *GifExtension); +int EGifPutExtensionTrailer(GifFileType *GifFile); +int EGifPutExtension(GifFileType *GifFile, const int GifExtCode, + const int GifExtLen, + const void *GifExtension); +int EGifPutCode(GifFileType *GifFile, int GifCodeSize, + const GifByteType *GifCodeBlock); +int EGifPutCodeNext(GifFileType *GifFile, + const GifByteType *GifCodeBlock); + +/****************************************************************************** + GIF decoding routines +******************************************************************************/ + +/* Main entry points */ +GifFileType *DGifOpenFileName(const char *GifFileName, int *Error); +GifFileType *DGifOpenFileHandle(int GifFileHandle, int *Error); +int DGifSlurp(GifFileType * GifFile); +GifFileType *DGifOpen(void *userPtr, InputFunc readFunc, int *Error); /* new one (TVT) */ +int DGifCloseFile(GifFileType * GifFile); + +#define D_GIF_ERR_OPEN_FAILED 101 /* And DGif possible errors. */ +#define D_GIF_ERR_READ_FAILED 102 +#define D_GIF_ERR_NOT_GIF_FILE 103 +#define D_GIF_ERR_NO_SCRN_DSCR 104 +#define D_GIF_ERR_NO_IMAG_DSCR 105 +#define D_GIF_ERR_NO_COLOR_MAP 106 +#define D_GIF_ERR_WRONG_RECORD 107 +#define D_GIF_ERR_DATA_TOO_BIG 108 +#define D_GIF_ERR_NOT_ENOUGH_MEM 109 +#define D_GIF_ERR_CLOSE_FAILED 110 +#define D_GIF_ERR_NOT_READABLE 111 +#define D_GIF_ERR_IMAGE_DEFECT 112 +#define D_GIF_ERR_EOF_TOO_SOON 113 + +/* These are legacy. You probably do not want to call them directly */ +int DGifGetScreenDesc(GifFileType *GifFile); +int DGifGetRecordType(GifFileType *GifFile, GifRecordType *GifType); +int DGifGetImageDesc(GifFileType *GifFile, bool changeImageCount); +int DGifGetLine(GifFileType *GifFile, GifPixelType *GifLine, int GifLineLen); +int DGifGetPixel(GifFileType *GifFile, GifPixelType GifPixel); +int DGifGetComment(GifFileType *GifFile, char *GifComment); +int DGifGetExtension(GifFileType *GifFile, int *GifExtCode, + GifByteType **GifExtension); +int DGifGetExtensionNext(GifFileType *GifFile, GifByteType **GifExtension,int* ExtCode); +int DGifGetCode(GifFileType *GifFile, int *GifCodeSize, + GifByteType **GifCodeBlock); +int DGifGetCodeNext(GifFileType *GifFile, GifByteType **GifCodeBlock); +int DGifGetLZCodes(GifFileType *GifFile, int *GifCode); + + +/****************************************************************************** + Color table quantization (deprecated) +******************************************************************************/ +int GifQuantizeBuffer(unsigned int Width, unsigned int Height, + int *ColorMapSize, GifByteType * RedInput, + GifByteType * GreenInput, GifByteType * BlueInput, + GifByteType * OutputBuffer, + GifColorType * OutputColorMap); + +/****************************************************************************** + Error handling and reporting. +******************************************************************************/ +extern char *GifErrorString(int ErrorCode); /* new in 2012 - ESR */ + +/***************************************************************************** + Everything below this point is new after version 1.2, supporting `slurp + mode' for doing I/O in two big belts with all the image-bashing in core. +******************************************************************************/ + +/****************************************************************************** + Color map handling from gif_alloc.c +******************************************************************************/ + +extern ColorMapObject *GifMakeMapObject(int ColorCount, + const GifColorType *ColorMap); +extern void GifFreeMapObject(ColorMapObject *Object); +extern ColorMapObject *GifUnionColorMap(const ColorMapObject *ColorIn1, + const ColorMapObject *ColorIn2, + GifPixelType ColorTransIn2[]); +extern int GifBitSize(int n); + +/****************************************************************************** + Support for the in-core structures allocation (slurp mode). +******************************************************************************/ + +extern void GifApplyTranslation(SavedImage *Image, GifPixelType Translation[]); +extern int GifAddExtensionBlock(int *ExtensionBlock_Count, + ExtensionBlock **ExtensionBlocks, + int Function, + unsigned int Len, unsigned char ExtData[]); +extern void GifFreeExtensions(int *ExtensionBlock_Count, + ExtensionBlock **ExtensionBlocks); +extern SavedImage *GifMakeSavedImage(GifFileType *GifFile, + const SavedImage *CopyFrom); +extern void GifFreeSavedImages(GifFileType *GifFile); + +/****************************************************************************** + 5.x functions for GIF89 graphics control blocks +******************************************************************************/ + +int DGifExtensionToGCB(const size_t GifExtensionLength, + const GifByteType *GifExtension, + GraphicsControlBlock *GCB); +size_t EGifGCBToExtension(const GraphicsControlBlock *GCB, + GifByteType *GifExtension); + +int DGifSavedExtensionToGCB(GifFileType *GifFile, + int ImageIndex, + GraphicsControlBlock *GCB); +int EGifGCBToSavedExtension(const GraphicsControlBlock *GCB, + GifFileType *GifFile, + int ImageIndex); + +/****************************************************************************** + The library's internal utility font +******************************************************************************/ + +#define GIF_FONT_WIDTH 8 +#define GIF_FONT_HEIGHT 8 +extern const unsigned char GifAsciiTable8x8[][GIF_FONT_WIDTH]; + +extern void GifDrawText8x8(SavedImage *Image, + const int x, const int y, + const char *legend, const int color); + +extern void GifDrawBox(SavedImage *Image, + const int x, const int y, + const int w, const int d, const int color); + +extern void GifDrawRectangle(SavedImage *Image, + const int x, const int y, + const int w, const int d, const int color); + +extern void GifDrawBoxedText8x8(SavedImage *Image, + const int x, const int y, + const char *legend, + const int border, const int bg, const int fg); + +#ifdef __cplusplus +} +#endif /* __cplusplus */ +#endif /* _GIF_LIB_H */ + +/* end */ |